MATERIAL FOR MAKING POLE, POLE MADE OF MATERIAL FOR MAKING POLE, AND TENT INCLUDING THE SAME

Disclosed are a material for making a pole, a pole made of the material, and a tent including the pole. The material includes glass fiber or mineral fiber having unidirectionality in a circumferential direction of the pole. The glass fiber is GU glass fiber weaved and coated in one direction thereof. The glass fiber or the mineral fiber includes 30 wt % or more with respect to 100 wt % of the total weight.

Skip to: Description  ·  Claims  · Patent History  ·  Patent History
Description
CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to Korean Patent Application No. 10-2019-0000370, filed on Jan. 2, 2019, which is incorporated herein by reference in its entirety.

BACKGROUND Field of the Disclosure

The present disclosure relates to a material for making a pole, the pole made of the material for making the pole, and a tent including the same, and more particularly, to a material for making a pole, the pole made of the material for making the pole, and the tent including the same, which may include glass fiber or mineral fiber, thereby reinforcing a surface thereof.

Description of Related Art

Generally, a pole for a tent is made of plastic material, duralumin or aluminum material or the like.

In addition, recently, a pole for a tent made of carbon fiber to increase strength has been proposed.

As outdoor activities such as camping increase, the demand for a tent is increasing and accordingly, the tents of various designs are sold.

As the design of the tent is diversified, a structure of the pole for the tent is also diversified into a structure of connecting by inserting an insert between the two poles.

However, there has been a problem in that a conventional pole for the tent is made of aluminum material or carbon fiber having unidirectionality in the longitudinal direction of the pole to have strong strength, but breakage at the connection portion connected by inserting the insert, that is, breakage or separation phenomenon at the connection portion occurs.

Korean Patent Publication No. 2000-0074279 entitled ‘A method for coating a pole for a tent’ (published on Dec. 15, 2000) has been proposed as the related art that is related to the present disclosure.

Korean Patent Publication No. 2000-0074279 entitled ‘A method for coating a pole for a tent’ (published on Dec. 15, 2000) as the related art that is related to the present disclosure is a method for coating a surface of a pole for a tent that coats duralumin or aluminum by using a vacuum vapor deposition method and then polishes with a UV paint.

Korean Patent Publication No. 2000-0074279 entitled ‘A method for coating a pole for a tent’ (published on Dec. 15, 2000) as the related art that is related to the present disclosure has had a problem in that when the pole for the tent made of duralumin or aluminum is bent, it is not restored due to the characteristic of a raw material of duralumin or aluminum.

In addition, there has been a problem in that in Korean Patent Publication No. 2000-0074279 entitled ‘A method for coating a pole for a tent,’ the pole for the tent is made of duralumin or aluminum and thereby, a separate coating should be performed in order to smooth and reinforce the surface, such that the manufacturing cost increases, the manufacturing process is complicated, thereby reducing productivity.

RELATED ART DOCUMENT Patent Document

(Patent Document 1) Korean Patent Publication No. 10-2000-0074279 (published on Dec. 15, 2000)

SUMMARY

An embodiment of the present disclosure provides a material for making a pole, the pole made of the material for making the pole, and a tent including the same, which may include glass fiber or mineral fiber, thereby satisfying strength and bending characteristics and also reinforce a surface, and maintaining a smooth surface without separate coating work.

An embodiment of the present disclosure provides a material for making a pole, the pole made of the material for making the pole, and a tent including the same, which may include carbon fiber, thereby improving an elastic restoring force, and securing accessibility to human body without being cold when used.

An embodiment of the present disclosure provides a material for making a pole, the pole made of the material for making the pole, and a tent including the same, which may include carbon fiber having unidirectionality in the circumferential direction thereof, thereby preventing breakage or separation of the insert connection portion.

According to an embodiment of the present disclosure, it provides a material for making a pole including glass fiber or mineral fiber having unidirectionality.

According to an embodiment of the present disclosure, it provides a pole including glass fiber or mineral fiber having unidirectionality.

In the present disclosure, the glass fiber may be GU glass fiber weaved and coated in one direction thereof.

The glass fiber or the mineral fiber in the present disclosure may have unidirectionality in the circumferential direction of the pole.

In the present disclosure, the glass fiber or the mineral fiber may have unidirectionality and include 30 wt % or more with respect to 100 wt % of the total weight.

The glass fiber or the mineral fiber in the present disclosure may have unidirectionality and include 30 wt % to 40 wt % with respect to 100 wt % of the total weight.

According to an embodiment of the present disclosure, it may provide a material for making a pole, the pole made of the material for making the pole, and a tent including the same further including carbon fiber.

In the present disclosure, the carbon fiber may include 29 wt % or more with respect to 100 wt % of the total weight.

The carbon fiber in the present disclosure may include 29 wt % to 44 wt % with respect to 100 wt % of the total weight.

The present disclosure may include 20 wt % to 25 wt % of HOOP carbon fiber having unidirectionality in the circumferential direction (Hoop Directional carbon) of the pole and 9 wt % to 19 wt % of UD carbon fiber having unidirectionality in the longitudinal direction (Uni Directional carbon) of the pole with respect to 100 wt % of the total weight.

According to an embodiment of the present disclosure, it may provide a material for making a pole, the pole made of the material for making the pole, and a tent further including glass fiber made of fabric or knitted fabric or glass fiber having unidirectionality in the longitudinal direction of the pole.

In the present disclosure, the glass fiber made of fabric or knitted fabric or the glass fiber having unidirectionality in the longitudinal direction of the pole may include 24 wt % or more with respect to 100 wt % of the total weight.

In the present disclosure, the glass fiber made of fabric or knitted fabric or the glass fiber having unidirectionality in the longitudinal direction of the pole may include 24 wt % to 34 wt % with respect to 100 wt % of the total weight.

In the present disclosure, the material for making the pole may include 29 wt % to 44 wt % of carbon fiber, 24 wt % to 34 wt % of glass fiber made of fabric or knitted fabric or glass fiber having unidirectionality in the longitudinal direction of the pole, or 30 wt % to 40 wt % of GU glass fiber or mineral fiber having unidirectionality in the circumferential direction of the pole with respect to 100 wt % of the total weight.

In the present disclosure, the material for making the pole may include 20 wt % to 25 wt % of HOOP carbon fiber having unidirectionality in the circumferential direction (Hoop Directional carbon) of the pole, 9 wt % to 19 wt % of UD carbon fiber having unidirectionality in the longitudinal direction (Uni Directional carbon) of the pole, 24 wt % to 34 wt % of glass fiber made of fabric or knitted fabric or glass fiber having unidirectionality in the longitudinal direction of the pole, or 30 wt % to 40 wt % of GU glass fiber or mineral fiber having unidirectionality in the circumferential direction of the pole with respect to 100 wt % of the total weight.

The present disclosure provides a tent including a pole including glass fiber or mineral fiber having unidirectionality.

The present disclosure may include glass fiber or mineral fiber to satisfy strength and bending characteristics and also reinforcing a surface and to maintain a smooth surface without separate coating work, thereby saving the manufacturing cost and improving productivity to secure economical efficiency.

The present disclosure may include carbon fiber, thereby improving an elastic restoring force and securing accessibility to human body without being cold when used.

The present disclosure may include carbon fiber having unidirectionality in the circumferential direction thereof, thereby preventing breakage or separation of the insert connection portion to design various shapes of pole structures.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a graph illustrating the results of the pole bending test of Table 1.

FIG. 2 is a graph illustrating the results of the pole bending test of Table 3.

FIG. 3 is a graph illustrating the results of the pole bending test of Table 4.

FIG. 4 is a graph illustrating the results of the pole bending test of Table 5.

FIG. 5 is a graph illustrating the results of the pole bending test of Table 7.

FIG. 6 is an enlarged cross-sectional diagram of an insert connection portion of a pole according to the present disclosure in the bending test of Table 7.

FIG. 7 is a diagram for confirming the results of the wind tunnel test of the pole according to the present disclosure.

FIG. 8 is a diagram for confirming the results of the wind tunnel test of a conventional aluminum pole.

FIG. 9 is a picture for confirming the results of the wind tunnel test of the pole according to the present disclosure and the conventional aluminum pole.

FIG. 10 is a picture of the wind tunnel test on a tent using the pole according to the present disclosure.

FIG. 11 is a picture of the wind tunnel test on the tent using the conventional aluminum pole, that is, a pale pole of FIG. 9.

 DETAILED DESCRIPTION

Hereinafter, specific embodiments of the present disclosure will be described with reference to the drawings. However, this is merely an example, and the present disclosure is not limited thereto.

In the description of the present disclosure, a detailed description of known technology related to the present disclosure will be omitted when it is determined to unnecessarily obscure the subject matter of the present disclosure. The following terms are terms defined considering the functions of the present disclosure, and this may be changed according to the intention or the custom of a user and an operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

The technical spirit of the present disclosure is determined by the claims, and the following embodiments are merely a means for effectively explaining the technical spirit of the present disclosure to those skilled in the art to which the present disclosure pertains.

According to an embodiment of the present disclosure, a material for making a pole and the pole made of the material for making the pole include glass fiber or mineral fiber.

For example, the glass fiber is GU fiber weaved and coated in one direction thereof (Unidirectional, UD).

For example, the mineral fiber is any one of basalt fiber, aramid fiber, and xylon fiber, and has unidirectionality.

The glass fiber or the mineral fiber is disposed to have unidirectionality in the direction perpendicular to the longitudinal direction of the pole, that is, in the circumferential direction of the pole.

The material for making the pole and the pole made of the material for making the pole include glass fiber or mineral fiber having unidirectionality in the circumferential direction thereof, thereby reinforcing a surface and smoothly forming the surface without separate coating work.

According to an embodiment of the present disclosure, the material for making the pole and the pole made of the material for making the pole include 30 wt % or more of glass fiber or mineral fiber having unidirectionality.

Then, the glass fiber, that is, GU glass fiber or mineral fiber having unidirectionality includes 30 wt % to 40 wt % with respect to 100 wt % of the total weight of the pole.

The glass fiber or the mineral fiber having unidirectionality reinforces the surface of the pole, thereby increasing surface strength and also smoothing the surface of the pole.

That is, when the glass fiber or the mineral fiber having unidirectionality includes 30 wt % or less, it is difficult to secure surface strength, and to smooth the surface of the pole.

Then, when the glass fiber or the mineral fiber having unidirectionality includes more than 40 wt %, it is possible to secure a higher surface strength, but there are problems in that the risk of occurring breakage or separation of the insert connection portion for connecting the pole and the other pole increases, and strength, stiffness, and slope characteristics are reduced.

An embodiment of the material for making the pole and the pole made of the material for making the pole may further include carbon fiber.

The carbon fiber may secure the strength and bending characteristics of the pole, that is, the slope thereof and also provide a user with a feeling that does not cold upon user's contact even when the outside temperature is low, thereby preventing inconvenience due to the cold feeling upon use, and securing accessibility to human body.

In addition, the carbon fiber may include reverse-directional carbon fiber, that is, carbon fiber having unidirectionality in the circumferential direction of the pole, thereby preventing breakage or separation of the insert connection portion for connecting the pole and the other pole.

It is revealed that the reverse-directional carbon fiber is carbon fiber having unidirectionality in the direction perpendicular to the longitudinal direction of the pole, that is, in the circumferential direction of the pole.

The carbon fiber includes 29 wt % or more with respect to 100 wt % of the total weight of the pole.

Then, the carbon fiber includes 29 wt % to 44 wt % with respect to 100 wt % of the total weight of the pole.

When the carbon fiber is less than 29 wt %, it is difficult to secure strength, an elastic restoring force, and accessibility to human body.

In addition, there is a problem in that when the carbon fiber includes more than 44 wt %, it is difficult to secure the bending characteristic, that is, the slope characteristic because strength becomes too strong.

More specifically, the carbon fiber includes, for example, 20 wt % to 25 wt % of HOOP carbon fiber having unidirectionality in the circumferential direction (Hoop Directional carbon) of the pole and 9 wt % to 19 wt % of UD carbon fiber having unidirectionality in the longitudinal direction (Uni Directional carbon) of the pole with respect to 100 wt % of the total weight of the pole.

The HOOP carbon fiber having unidirectionality in the circumferential direction (Hoop Directional carbon) of the pole prevents breakage or separation of the insert connection portion for connecting the pole to the other pole. That is, the HOOP carbon fiber having unidirectionality in the circumferential direction (Hoop Directional carbon) of the pole reinforces the strength of the insert connection portion for connecting the pole and the other pole.

There is a problem in that when the HOOP carbon fiber having unidirectionality in the circumferential direction (Hoop Directional carbon) of the pole includes less than 20 wt %, it is difficult to prevent breakage or separation of the insert connection portion for connecting the pole and the other pole, and the characteristics of breakage or separation of the insert connection portion for connecting the pole and the other pole are deteriorated.

In addition, there is a problem in that when the HOOP carbon fiber having unidirectionality in the circumferential direction (Hoop Directional carbon) of the pole includes more than 25 wt %, the characteristics of surface strength, strength, stiffness, and slope are deteriorated, and the characteristics of breakage or separation of the insert connection portion for connecting the pole and the other pole are deteriorated.

The UD carbon fiber having unidirectionality in the longitudinal direction (Uni Directional carbon) of the pole improves the strength and slope characteristics of the pole.

There is a problem in that when the UD carbon fiber having unidirectionality in the longitudinal direction (Uni Directional carbon) of the pole includes less than 9 wt %, the strength and slope characteristics thereof are deteriorated.

In addition, there is a problem in that when the UD carbon fiber having unidirectionality in the longitudinal direction (Uni Directional carbon) of the pole includes more than 19 wt %, the characteristics of breakage or separation of the insert connection portion for connecting the pole and the other pole are deteriorated, and the stiffness and surface strength characteristics are deteriorated.

The slope refers to a height difference capable of pressurizing the pole when the pole is pressurized in a state of standing the pole vertically, and refers to a limit height at which the pole may be bent.

An embodiment of the material for making the pole and the pole made of the material for making the pole may further include glass fiber made of fabric or knitted fabric.

An embodiment of the material for making the pole and the pole made of the material for making the pole may further include glass fiber having unidirectionality in the longitudinal direction of the pole.

The glass fiber made of fabric or knitted fabric or the glass fiber having unidirectionality in the longitudinal direction of the pole function as securing the stiffness of the pole.

The glass fiber made of fabric or knitted fabric or the glass fiber having unidirectionality in the longitudinal direction of the pole include 24 wt % or more with respect to 100 wt % of the total weight of the pole.

The glass fiber made of fabric or knitted fabric or the glass fiber having unidirectionality in the longitudinal direction of the pole include 24 wt % to 34 wt % with respect to 100 wt % of the total weight of the pole.

It is difficult to secure the stiffness of the pole when the glass fiber made of fabric or knitted fabric or the glass fiber having unidirectionality in the longitudinal direction of the pole includes less than 24 wt %.

In addition, there is a problem in that when the glass fiber made of fabric or knitted fabric or the glass fiber having unidirectionality in the longitudinal direction of the pole includes more than 34 wt %, the characteristics of breakage or separation of the insert connection portion for connecting the pole and the other pole are deteriorated, and the strength and surface strength characteristics are deteriorated.

That is, the material for making the pole and the pole made of the material for making the pole according to the present disclosure include, for example, 29 wt % to 44 wt % of carbon fiber, 24 wt % to 34 wt % of glass fiber made of fabric or knitted fabric or glass fiber having unidirectionality in the longitudinal direction of the pole, or 30 wt % to 40 wt % of GU glass fiber or mineral fiber having unidirectionality in the circumferential direction of the pole with respect to 100 wt % of the total weight of the pole.

The material for making the pole and the pole made of the material for making the pole according to the present disclosure include, for example, 20 wt % to 25 wt % of HOOP carbon fiber having unidirectionality in the circumferential direction (Hoop Directional carbon) of the pole, 9 wt % to 19 wt % of UD carbon fiber having unidirectionality in the longitudinal direction (Uni Directional carbon) of the pole, 24 wt % to 34 wt % of glass fiber made of fabric or knitted fabric or glass fiber having unidirectionality in the longitudinal direction of the pole, or wt % to 40 wt % of GU glass fiber or mineral fiber having unidirectionality in the circumferential direction of the pole with respect to 100 wt % of the total weight of the pole.

More specifically, the material for making the pole and the pole made of the material for making the pole according to the present disclosure include, for example, 22 wt % of HOOP carbon fiber having unidirectionality in the circumferential direction (Hoop Directional carbon) of the pole, 9 wt % of UD carbon fiber having unidirectionality in the longitudinal direction (Uni Directional carbon) of the pole, 34 wt % of glass fiber made of fabric or knitted fabric or glass fiber having unidirectionality in the longitudinal direction of the pole, or 35 wt % of GU glass fiber or mineral fiber having unidirectionality in the circumferential direction of the pole with respect to 100 wt % of the total weight.

FIG. 1 is a graph illustrating the results of the pole bending test of Table 1 below, and is the bending test results of Comparative Example 1, which is a pole made of 100 wt % of carbon, Comparative Example 2 and Comparative Example 3, which are a pole made of 100 wt % of glass fiber reinforced plastic (FRP), and Comparative Example 4 and Comparative Example 5, which are a pole made of 60 wt % of carbon.

It is revealed that the pole bending test tests the Yield point of the pole while pressurizing the pole into a pressurizing hole in a state of standing the pole vertically, and the moving distance of the pressurizing hole is a slope (distance) from the Yield point of the pole.

The pole of Comparative Example 1 has an outer diameter of 9.25 mm and a thickness of 0.75 mm, Comparative Example 2, Comparative Example 3, and Comparative Example 4 have an outer diameter of 9.3 mm and a thickness of 0.75 mm, and Comparative Example 5 has an outer diameter of 9.2 mm and a thickness of 0.75 mm.

TABLE 1 Slope Y-Disp Y-Load (kgf/ Max-Dis Max-load (mm) (kgf) mm) (mm) (kgf) 1 Comparative 9.929 23.92 2.556 21.03 41.48 Example 1 2 Comparative 12.560 25.77 2.144 18.43 35.68 Example 2 3 Comparative 12.640 26.01 2.129 20.34 38.01 Example 3 4 Comparative 9.045 19.49 2.909 9.15 25.13 Example 4 5 Comparative 9.352 28.75 3.272 13.95 35.76 Example 5

In Table 2 below, the strength and slope of Comparative Example 1, Comparative Example 2, which is a pole made of 100 wt % of glass fiber reinforced plastic (FRP), and Comparative Example 4, which is a pole made of 60 wt % of carbon, are summarized again.

TABLE 2 Comparative Comparative Comparative Example 1 Example 2 Example 4 Strength(kgf) 41.48 38.01 25.13 Slope(mm) 21.03 20.34 9.15

In addition, FIGS. 2 to 4 are graphs illustrating the results of the pole bending tests in Tables 3 to 5 below.

Table 3 illustrates the results of the pole bending test for Comparative Example 6 including fabric glass fiber disposed in the circumferential direction of the pole and GU glass fiber disposed in the longitudinal direction of the pole.

Table 4 illustrates the results of the pole bending test for Comparative Example 7 including fabric glass fiber disposed in the longitudinal direction of the pole and GU glass fiber disposed in the longitudinal direction of the pole.

Table 5 illustrates the results of the pole bending test for Comparative Example 8 including unidirectional GU glass fiber disposed in the longitudinal direction of the pole and unidirectional GU glass fiber disposed in the circumferential direction of the pole.

More specifically, Comparative Example 6 includes 21 wt % of fabric glass fiber disposed in the circumferential direction thereof and 79 wt % of GU glass fiber disposed in the longitudinal direction of the pole, and is a pole having an outer diameter of 9.31 mm, an inner diameter of 7.76 mm, a thickness of 0.775 mm, a length of 420 mm, and a weight of 15.96 g.

In addition, Comparative Example 7 includes 21 wt % of fabric glass fiber disposed in the longitudinal direction of the pole and 79 wt % of GU glass fiber disposed in the longitudinal direction of the pole, and is a pole having an outer diameter of 9.32 mm, an inner diameter of 7.76 mm, a thickness of 0.78 mm, a length of 420 mm, and a weight of 16.06 g.

In addition, Comparative Example 8 includes 21 wt % of the unidirectional GU glass fiber disposed in the longitudinal direction of the pole and 79 wt % of the unidirectional GU glass fiber disposed in the circumferential direction of the pole, and is a pole having an outer diameter of 9.31 mm, an inner diameter of 7.76 mm, a thickness of 0.775 mm, a length of 420 mm, and a weight of 17.22 g.

TABLE 3 Slope Y-Disp Y-Load (kgf/ Max-Dis Max-load (mm) (kgf) mm) (mm) (kgf) Comparative 1 15.4 27.8 1.9 23.9 39.3 Example 6 2 13.4 24.1 1.9 25.1 38.1 3 15.3 27.1 1.8 27.4 41.9 4 15.5 28.3 1.9 27.5 43.3 Min. 13.4 24.1 1.8 23.9 38.1 Max. 15.5 28.3 1.9 27.5 43.3 Ave. 14.9 26.8 1.9 26.0 40.7

FIG. 2 is a graph illustrating the results of the pole bending test for Comparative Example 6 in Table 3.

TABLE 4 Slope Y-Disp Y-Load (kgf/ Max-Dis Max-load (mm) (kgf) mm) (mm) (kgf) Comparative 1 11.7 22.4 2.0 14.2 23.4 Example 7 2 11.0 17.9 1.9 13.5 20.5 3 11.0 6.3 2.1 12.2 22.2 4 11.1 16.1 2.1 11.4 22.5 Min. 11.0 6.3 1.9 11.4 20.5 Max. 11.7 22.4 2.1 14.2 23.4 Ave. 11.2 15.7 2.0 12.8 22.1

FIG. 3 is a graph illustrating the results of the pole bending test for Comparative Example 7 in Table 4.

TABLE 5 Slope Y-Disp Y-Load (kgf/ Max-Dis Max-load (mm) (kgf) mm) (mm) (kgf) Comparative 1 15.3 35.7 2.4 25.1 49.9 Example 8 2 15.4 35.0 2.3 29.5 52.5 3 15.5 34.8 2.3 29.4 52.1 4 15.8 37.3 2.4 26.4 49.9 Min. 15.3 34.8 2.3 25.1 49.9 Max. 15.8 37.3 2.4 29.5 52.5 Ave. 15.5 35.7 2.3 27.6 51.1

FIG. 4 is a graph illustrating the results of the pole bending test for Comparative Example 8 in Table 5.

Table 6 below compares an average strength (kgf) and an average slope (mm) of Comparative Example 6, Comparative Example 7, and Comparative Example 8.

TABLE 6 Comparative Comparative Comparative Example 6 Example 7 Example 8 Strength(kgf) 40.7 22.1 51.1 Slope(mm) 26 12.8 27.6

As may be seen in the following Tables 3 to 6 and FIGS. 2 to 4, it may be confirmed that Comparative Example 8, which includes 21 wt % of the unidirectional GU glass fiber and 79 wt % of the unidirectional GU glass fiber disposed in the circumferential direction of the pole, is superior to Comparative Example 6 and Comparative Example 7, whose strength and slope are different from each other.

Table 7 below illustrates the results of the pole bending tests of Comparative Example 9 and Comparative Example 10 and Embodiment 1 to Embodiment 5 of the present disclosure, and FIG. 5 is a graph illustrating the results of the pole bending test in Table 7.

Comparative Example 9 and Comparative Example 10 are poles made of 100 wt % of the carbon, and are poles having an outer diameter of 9.5 mm, an inner diameter of 7.76 mm, a length of 400 mm, and a weight of 16 g.

Embodiment 1 to Embodiment 5 include 22 wt % of HOOP carbon fiber having unidirectionality in the circumferential direction (Hoop Directional carbon) of the pole, 9 wt % of UD carbon fiber having unidirectionality in the longitudinal direction (Uni Directional carbon) of the pole, 34 wt % of glass fiber having unidirectionality in the longitudinal direction of the pole, or 35 wt % of GU glass fiber having unidirectionality in the circumferential direction of the pole with respect to 100 wt % of the total weight, and are poles having an outer diameter of 9.31 mm, an inner diameter of 7.76 mm, a length of 400 mm, and a weight of 16 g.

FIG. 6 is an enlarged cross-sectional diagram of the insert connection portion of the pole according to the present disclosure in the bending test of Table 7.

FIG. 6 illustrates an example of connecting a first pole 10 and a second pole 20 having the insert inserting portion disposed at one end portion side thereof by using the insert, and is a diagram capable of confirming, in Table 7, a length L1 of the insert inserting portion of the first pole 10, a length L2 of a first inserting portion of the insert 30 inserted into the first pole 10, and a length L3 of a second inserting portion inserted into the second pole 20.

It is revealed that Table 7 and Embodiment 1 of FIG. 5 (the second graph in FIG. 5) are an embodiment in which L1, L2, and L3 are 35 mm, 35 mm, and 34 mm, respectively, Embodiment 2 (the third graph in FIG. 5) is an embodiment in which L1, L2, and L3 are 35 mm, 30 mm, and 34 mm, respectively, Embodiment 3 (the fourth graph in FIG. 5) is an embodiment in which L1, L2, and L3 are 35 mm, 25 mm, and 34 mm, respectively, Embodiment 4 (the fifth graph in FIG. 5) is an embodiment in which L1, L2, and L3 are 35 mm, 25 mm, and 30 mm, respectively, and Embodiment 5 (the sixth graph in FIG. 5) is an embodiment in which L1, L2, and L3 are 35 mm, 25 mm, and 25 mm, respectively.

Then, Comparative Example 1 and Comparative Example 2 are straight type single poles that are not connected to the insert 30.

TABLE 7 Y-Disp Y-Load Slope Max-Dis Max-load (mm) (kgf) (kgf/mm) (mm) (kgf) Remarks 1-1 Comparative 16.74 41.72 2.653 27.84 63.38 Example 1 1-2 Comparative 17.34 43.17 2.626 29.84 67.41 Example 2 2 Embodiment 1 15.06 43.81 3.124 22.26 54.84 Breakage of insert, bending of pole at the end of the insert (weakly) 3 Embodiment 2 15.45 45.50 3.161 22.35 55.73 Breakage of insert, bending of pole at the end of the insert (weakly) 4 Embodiment 3 14.26 38.74 2.982 28.36 56.70 Breakage of insert, bending of pole at the end of the insert (weakly) 5 Embodiment 4 15.15 42.04 2.921 27.55 55.17 Breakage of insert, bending of pole at the end of the insert (a little) 6 Embodiment 5 12.24 32.54 2.831 28.94 53.80 Breakage of insert, bending of pole at the end of the insert (too much)

As confirmed in Table 7 and FIG. 5, it may be confirmed that in an embodiment of the present disclosure, Comparative Example 1 and Comparative Example 2, which are the single poles subject to the bending test without connecting the portion, which is connected to the insert 30 at the first pole and the second pole 20, to the insert 30, have similar strength and slope upon comparison therebetween.

It has been confirmed that the pole according to the present disclosure including 22 wt % of HOOP carbon fiber having unidirectionality in the circumferential direction (Hoop Directional carbon) of the pole, 9 wt % of UD carbon fiber having unidirectionality in the longitudinal direction (Uni Directional carbon) of the pole, 34 wt % of glass fiber having unidirectionality in the longitudinal direction of the pole, or 35 wt % of GU glass fiber having unidirectionality in the circumferential direction of the pole with respect to 100 wt % of the total weight satisfies the strength and bending characteristics and also secures the stiffness of the connection portion of the insert 30 sufficiently.

It has been confirmed that the pole according to the present disclosure has excellent elastic restoring force as the results of the wind tunnel test as well as the pole bending test for a pole for a tent used for installing a tent or a tarp or the like.

FIG. 7 is a diagram for confirming the results of the wind tunnel test of the pole according to the present disclosure, and FIG. 8 is a diagram for confirming the results of the wind tunnel test of the conventional aluminum pole, and FIG. 9 is a photograph for confirming the results of the wind tunnel test of the pole according to the present disclosure and the conventional aluminum pole.

FIG. 7 is the pole according to the present disclosure, and FIG. 8 is the conventional aluminum pole according to the present disclosure.

A pale pole is the conventional aluminum pole, and a dark black pole is the pole according to the present disclosure including 22 wt % of HOOP carbon fiber having unidirectionality in the circumferential direction (Hoop Directional carbon) of the pole, 9 wt % of UD carbon fiber having unidirectionality in the longitudinal direction (Uni Directional carbon) of the pole, 34 wt % of glass fiber having unidirectionality in the longitudinal direction of the pole, or 35 wt % of GU glass fiber having unidirectionality in the circumferential direction of the pole with respect to 100 wt % of the total weight.

It may be confirmed that the pole according to the present disclosure is not deformed but maintains the original shape in the air volume in which the conventional aluminum pole was bent and deformed.

FIG. 10 is a photograph of the wind tunnel test for the tent using the pole according to the present disclosure, and FIG. 11 is a photograph of the wind tunnel test for the tent using the conventional aluminum pole, that is, the pale pole of FIG. 9.

Referring to FIGS. 9 and 10, it may be confirmed that the bending of the pole of the tent using the conventional aluminum pole is greater than that of the pole of the tent using the pole according to the present disclosure.

The present disclosure may include glass fiber or mineral fiber to satisfy the strength and bending characteristics and also to reinforce a surface thereof, and to maintain a smooth surface without separate coating work, thereby saving the manufacturing cost and improving productivity to secure economical efficiency.

The present disclosure may include carbon fiber, thereby improving an elastic restoring force, and securing accessibility to human body without being cold when used.

The present disclosure may include carbon fiber having unidirectionality in the circumferential direction thereof, thereby preventing breakage or separation of the insert connection portion to design various shapes of pole structures.

As described above, while the present disclosure has specifically explained the representative embodiments of the present disclosure, it is to be understood to those skilled in the art in which the present disclosure pertains that various modifications may be made with respect to the above-described embodiment without departing from the scope of the present disclosure. Therefore, the scope of the present disclosure should not be limited to the described embodiments, but should be determined by equivalents to the appended claims, as well as the following claims.

Claims

1. A material for making a pole comprising glass fiber or mineral fiber having unidirectionality.

2. The material for making the pole of claim 1, wherein the glass fiber is GU glass fiber weaved and coated in one direction thereof.

3. The material for making the pole of claim 1, wherein the glass fiber or the mineral fiber has unidirectionality in the circumferential direction of a pole.

4. The material for making the pole of claim 1, wherein the glass fiber or the mineral fiber has unidirectionality and comprises 30 wt % or more with respect to 100 wt % of the total weight.

5. The material for making the pole of claim 1, wherein the glass fiber or the mineral fiber has unidirectionality and comprises 30 wt % to 40 wt % with respect to 100 wt % of the total weight.

6. The material for making the pole of claim 1, further comprising carbon fiber.

7. The material for making the pole of claim 6, wherein the carbon fiber comprises 29 wt % or more with respect to 100 wt % of the total weight.

8. The material for making the pole of claim 6, wherein the carbon fiber comprises 29 wt % to 44 wt % with respect to 100 wt % of the total weight.

9. The material for making the pole of claim 6, comprising 20 wt % to 25 wt % of HOOP carbon fiber having unidirectionality in the circumferential direction (Hoop Directional carbon) of the pole and 9 wt % to 19 wt % of UD carbon fiber having unidirectionality in the longitudinal direction (Uni Directional carbon) of the pole with respect to 100 wt % of the total weight.

10. The material for making the pole of claim 1, further comprising glass fiber made of fabric or knitted fabric or glass fiber having unidirectionality in the longitudinal direction of the pole.

11. The material for making the pole of claim 10, wherein the glass fiber made of fabric or knitted fabric or the glass fiber having unidirectionality in the longitudinal direction of the pole comprises 24 wt % or more with respect to 100 wt % of the total weight.

12. The material for making the pole of claim 10, wherein the glass fiber made of fabric or knitted fabric or the glass fiber having unidirectionality in the longitudinal direction of the pole comprises 24 wt % to 34 wt % with respect to 100 wt % of the total weight.

13. The material for making the pole of claim 1, comprising 29 wt % to 44 wt % of carbon fiber, 24 wt % to 34 wt % of glass fiber made of fabric or knitted fabric or glass fiber having unidirectionality in the longitudinal direction of the pole, or 30 wt % to 40 wt % of GU glass fiber or miner fiber having unidirectionality in the circumferential direction of the pole with respect to 100 wt % of the total weight.

14. The material for making the pole of claim 1, comprising 20 wt % to 25 wt % of HOOP carbon fiber having unidirectionality in the circumferential direction (Hoop Directional carbon) of the pole, 9 wt % to 19 wt % of UD carbon fiber having unidirectionality in the longitudinal direction (Uni Directional carbon) of the pole, 24 wt % to 34 wt % of glass fiber made of fabric or knitted fabric or glass fiber having unidirectionality in the longitudinal direction of the pole, or 30 wt % to 40 wt % of GU glass fiber or miner fiber having unidirectionality in the circumferential direction of the pole with respect to 100 wt % of the total weight.

15. A pole comprising glass fiber or mineral fiber having unidirectionality.

16. The pole of claim 15, wherein the glass fiber is GU glass fiber weaved and coated in one direction thereof, and

wherein the glass fiber or the mineral fiber has unidirectionality and comprises 30 wt % to 40 wt % with respect to 100 wt % of the total weight.

17-19. (canceled)

20. The pole of claim 15, further comprising carbon fiber comprising 20 wt % to 25 wt % of HOOP carbon fiber having unidirectionality in the circumferential direction (Hoop Directional carbon) of the pole and 9 wt % to 19 wt % of UD carbon fiber having unidirectionality in the longitudinal direction (Uni Directional carbon) of the pole with respect to 100 wt % of the total weight.

21-27. (canceled)

28. The pole of claim 15, comprising 20 wt % to 25 wt % of HOOP carbon fiber having unidirectionality in the circumferential direction (Hoop Directional carbon) of a pole, 9 wt % to 19 wt % of UD carbon fiber having unidirectionality in the longitudinal direction (Uni Directional carbon) of the pole, 24 wt % to 34 wt % of glass fiber made of fabric or knitted fabric or glass fiber having unidirectionality in the longitudinal direction of the pole, or 30 wt % to 40 wt % of GU glass fiber or miner fiber having unidirectionality in the circumferential direction of the pole with respect to 100 wt % of the total weight.

29. A tent comprising:

at least one pole comprising glass fiber or mineral fiber having unidirectionality; and
a shell supported by the at least one pole.
Patent History
Publication number: 20200208432
Type: Application
Filed: Feb 1, 2019
Publication Date: Jul 2, 2020
Inventor: Yun Sub SONG (Busan)
Application Number: 16/264,892
Classifications
International Classification: E04H 15/60 (20060101); D04B 1/14 (20060101); D04B 21/20 (20060101);