BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to an energy absorber, and more particularly to an energy absorber that can keep structure of the energy absorber in a stable state upon impacts of shock.
2. Description of Related Art
Conventional energy absorbers are commonly mounted on large objects, such as buildings, bridges or machines to provide shock-absorbing and shock-suppressing effects to the objects and to absorb the energy and shocks generated during earthquakes. U.S. Pat. No. 5,655,756 (hereinafter referred to as the referenced case) discloses a conventional energy absorber (Lead Rubber Bearing, LRB) comprising a core post, two supporting boards, multiple metal layers, and multiple rubber layers. The supporting boards are mounted respectively on two ends of the core post, and are securely connected to the ground and a large object respectively. The metal layers and the rubber layers are alternately mounted between the supporting boards. When an earthquake occurs, a shock-absorbing effect can be provided by the deformations of the metal and the rubber layers to reduce the damage caused by the earthquake.
However, the conventional energy absorber of the referenced case cannot effectively absorb vertical energy and shocks of the earthquakes. When the vertical energy of the earthquakes is over a certain level, the core post and the supporting boards may be separated from each other. Accordingly, the shock-absorbing effect of the conventional energy absorber will be reduced, and the conventional energy absorber is easily damaged.
To overcome the shortcomings, the present invention tends to provide an energy absorber to mitigate or obviate the aforementioned problems.
SUMMARY OF THE INVENTION The main objective of the invention is to provide an energy absorber that can prevent components of the energy absorber from being separated from each other to improve the stiffness and the damping effect of the energy absorber. The energy absorber has a shock absorber, two supporting boards, and at least one pulling-resistance cable. The shock absorber has two ends. The supporting boards are respectively mounted on the two ends of the shock absorber, are parallel with each other, and are defined respectively as a first supporting board and a second supporting board. The at least one pulling-resistance cable is disposed between and connected with the supporting boards in a continuously bending manner.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a first embodiment of an energy absorber in accordance with the present invention;
FIG. 2 is a perspective view of a second embodiment of an energy absorber in accordance with the present invention;
FIG. 3 is a perspective view of a third embodiment of an energy absorber in accordance with the present invention;
FIG. 4 is a perspective view of a fourth embodiment of an energy absorber in accordance with the present invention;
FIG. 5 is a perspective view of a fifth embodiment of an energy absorber in accordance with the present invention;
FIG. 6 is a perspective view of a sixth embodiment of an energy absorber in accordance with the present invention;
FIG. 7 is a perspective view of a seventh embodiment of an energy absorber in accordance with the present invention;
FIG. 8 is a perspective view of an eighth embodiment of an energy absorber in accordance with the present invention;
FIG. 9 is a perspective view of a ninth embodiment of an energy absorber in accordance with the present invention;
FIG. 10 is a perspective view of a tenth embodiment of an energy absorber in accordance with the present invention;
FIG. 11 is a perspective view of an eleventh embodiment of an energy absorber in accordance with the present invention;
FIG. 12 is a perspective view of a twelfth embodiment of an energy absorber in accordance with the present invention;
FIG. 13 is a perspective view of a thirteenth embodiment of an energy absorber in accordance with the present invention;
FIG. 14 is a perspective view of a fourteenth embodiment of an energy absorber in accordance with the present invention;
FIG. 15 is a perspective view of a fifteenth embodiment of an energy absorber in accordance with the present invention;
FIG. 16 is a perspective view of a sixteenth embodiment of an energy absorber in accordance with the present invention;
FIG. 17 is a perspective view of a seventeenth embodiment of an energy absorber in accordance with the present invention;
FIG. 18 is a perspective view of an eighteenth embodiment of an energy absorber in accordance with the present invention;
FIG. 19 is a perspective view of a nineteenth embodiment of an energy absorber in accordance with the present invention;
FIG. 20 is a perspective view of a twentieth embodiment of an energy absorber in accordance with the present invention;
FIG. 21 is a perspective view of a twenty-first embodiment of an energy absorber in accordance with the present invention;
FIG. 22 is a perspective view of a twenty-second embodiment of an energy absorber in accordance with the present invention;
FIG. 23 is a perspective view of a twenty-third embodiment of an energy absorber in accordance with the present invention;
FIG. 24 is a perspective view of a twenty-fourth embodiment of an energy absorber in accordance with the present invention;
FIG. 25 is a perspective view of a twenty-fifth embodiment of an energy absorber in accordance with the present invention;
FIG. 26 is a perspective view of a twenty-sixth embodiment of an energy absorber in accordance with the present invention;
FIG. 27 is a perspective view of a twenty-seventh embodiment of an energy absorber in accordance with the present invention;
FIG. 28 is a perspective view of a twenty-eighth embodiment of an energy absorber in accordance with the present invention;
FIG. 29 is a perspective view of a twenty-ninth embodiment of an energy absorber in accordance with the present invention; and
FIG. 30 is a perspective view of a thirtieth embodiment of an energy absorber in accordance with the present invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT With reference to FIG. 1, a first embodiment of an energy absorber in accordance with the present invention is used on buildings, bridges, other large objects, facilities or equipments, and the energy absorber comprises a shock absorber 10, two supporting boards 20,22, and at least one pulling-resistance cable 30.
The shock absorber 10 may be a core post or a sliding post of the friction damping energy absorber of U.S. patent application Ser. Nos. 14/845,668, 14/961,532 or 14/954,199, a core post of a conventional energy absorber, such as the referenced case, or an anti-shock device of U.S. Pat. No. 7,472,518, The shock absorber 10 can provide a shock-absorbing effect by means of friction, deformation, or slide along a flat, curved, or concaved surface. The shock absorber 10 has a cross section that may be round, rectangular, square or in any other geometric shape and is not limited in the present invention. The two supporting boards 20,22 are respectively connected to the ends of the shock absorber 10, are parallel with each other at a spaced interval, and are respectively defined as a first supporting board 20 and a second supporting board 22. The supporting boards 20,22 may be round, rectangular, square or in any other shape and are respectively connected to the ground and a large object, such as a building, a bridge or a machine by bolts, rivets, or a welding process. In the first embodiment as shown in FIG. 1, the supporting boards 20,22 are square, and each supporting board 20,22 has a sectional area larger than a sectional area of the shock absorber 10. Each supporting board 20,22 has a sectional shape same as or different from a sectional shape of the shock absorber 10.
The at least one pulling-resistance cable 30 is disposed between and connected with the supporting boards 20,22 in a continuously bending manner and may be made of shape memory alloy or steel. With the arrangement of the at least one pulling-resistance cable 30, a pulling-resistance effect against a vertical separating force generated by earthquakes is provided to the energy absorber, such that the shock absorber 10 and the supporting boards 20,22 can be prevented from being separated or dislocated from each other due to the vertical energy generated by earthquakes. Accordingly, the stiffness and the shock-absorbing effect of the energy absorber can be enhanced, and the recentering of the energy absorber can also be improved in three directions that include two horizontal directions and one vertical direction.
In the first embodiment as shown in FIG. 1, each supporting board 20,22 has a face facing the other supporting board 20,22 and multiple rings 202,222 mounted on the face of the supporting board 20,22. One pulling-resistance cable 30 is implemented and is mounted through the rings 202,222 on the supporting boards 20,22 in a continuously bending manner. In the first embodiment, each supporting board 20,22 has four rings 202,222. The rings 202 on the first supporting board 20 are located respectively at four corners of the first supporting board 20. The rings 222 on the second supporting board 22 are located respectively at middles of four side edges of the second supporting board 22. The pulling-resistance cable 30 is mounted through the ring 202 at one of the corners of the first supporting board 20, extends downward, is mounted through the ring 222 at a corresponding side edge of the second supporting board 22, extends upward, and is then mounted through the ring 202 at an adjacent corner of the first supporting board 20. The pulling-resistance cable 30 is mounted through the rings 202,222 on the first and second supporting boards 20,22 in such a sequence, and two ends of the pulling-resistance cable 30 are connected with each other. Accordingly, multiple V-shaped pulling-resistance sections are formed respectively on sides of the energy absorber.
In the second embodiment as shown in FIG. 2, each supporting board 20,22 has four rings 202,222. The rings 202 on the first supporting board 20 are located respectively at middles of four side edges of the first supporting board 20. The rings 222 on the second supporting board 22 are located respectively at four corners of the second supporting board 22. The pulling-resistance cable 30 is mounted through the ring 222 at one of the corners of the second supporting board 22, extends upward, is mounted through the ring 202 at a corresponding side edge of the first supporting board 20, extends downward, and is then mounted through the ring 222 at an adjacent corner of the second supporting board 22. The pulling-resistance cable 30 is mounted through the rings 202,222 on the first and second supporting boards 20,22 in such a sequence, and two ends of the pulling-resistance cable 30 are connected with each other. Accordingly, multiple inverse V-shaped pulling-resistance sections are formed respectively on sides of the energy absorber.
With reference to FIG. 3, in the third embodiment, each supporting board 20,22 has eight rings 202,222. The rings 202,222 on each supporting board 20,22 are located respectively at middles of four side edges and four corners of the supporting board 20,22. Two pulling-resistance cables 30 are implemented. One of the cables 30 is mounted through some of the rings 202,222 on the supporting boards 20,22 in a manner as shown in FIG. 1, that is, the pulling-resistance cable 30 is mounted through the ring 202 at one of the corners of the first supporting board 20, extends downward, is mounted through the ring 222 at a corresponding side edge of the second supporting board 22, extends upward, and is then mounted through the ring 202 at an adjacent corner of the first supporting board 20. Thus, the pulling-resistance cable 30 forms multiple V-shaped pulling-resistance sections respectively on sides of the energy absorber. The other cable 30 is mounted through the rest of the rings 202,222 on the supporting boards 20,22 in a manner as shown in FIG. 2, that is, the pulling-resistance cable 30 is mounted through the ring 222 at one of the corners of the second supporting board 22, extends upward, is mounted through the ring 202 at a corresponding side edge of the first supporting board 20, extends downward, and is then mounted through the ring 222 at an adjacent collier of the second supporting board 22. Thus, the pulling-resistance cable 30 forms multiple inverse V-shaped pulling-resistance sections respectively on sides of the energy absorber. The V-shaped pulling-resistance sections and the inverse V-shaped pulling-resistance sections are arranged in a stacked manner.
With reference to FIG. 4, in the fourth embodiment, four rings 202 are implemented on the first supporting board 20, and two rings 222 are implemented on the second supporting board 22. The four rings 202 on the first supporting board 20 are located respectively at four corners of the first supporting board 20. The two rings 222 on the second supporting board 22 are located respectively at middles of two opposite side edges of the second supporting board 22. Two pulling-resistance cables 30 are implemented. Each pulling-resistance cable 30 is mounted through two adjacent rings 202 on the corners of the first supporting board 20 and the ring 222 at a corresponding side edge of the second supporting board 22 to form an inverse triangular loop on a side of the energy absorber.
With reference to FIG. 5, in the fifth embodiment, two rings 202 are implemented on the first supporting board 20, and four rings 222 are implemented on the second supporting board 22. The two rings 202 on the first supporting board 20 are located respectively at middles of two opposite side edges of the first supporting board 20. The four rings 222 on the second supporting board 22 are located respectively at four corners of the second supporting board 22. Two pulling-resistance cables 30 are implemented. Each pulling-resistance cable 30 is mounted through two adjacent rings 222 on the corners of the second supporting board 22 and the ring 202 at a corresponding side edge of the first supporting board 20 to form a triangular loop on a side of the energy absorber.
With reference to FIG. 6, in the sixth embodiment, four rings 202,222 are implemented on each supporting board 20,22. The four rings 202,222 on each supporting board 20,22 are located respectively at four corners of the supporting board 20,22. Two pulling-resistance cables 30 are implemented. Each pulling-resistance cable 30 is mounted through the four rings 202,222 on corresponding sides of the first and second supporting boards 20,22 to form a quadrangular loop with two diagonal lines crossed with each other on a side of the energy absorber. Each quadrangular loop may be square or rectangular.
With reference to FIG. 7, in the seventh embodiment, four rings 202,222 are implemented on each supporting board 20,22. The four rings 202,222 on each supporting board 20,22 are located respectively at four corners of the supporting board 20,22. Two pulling-resistance cables 30 are implemented. Each pulling-resistance cable 30 is mounted through two adjacent rings 202,222 on corresponding sides of the first and second supporting boards 20,22 to form a quadrangular loop on a side of the energy absorber. Each quadrangular loop may be square or rectangular.
With reference to FIG. 8, in the eighth embodiment, four rings 202,222 are implemented on each supporting board 20,22. The four rings 202,222 on each supporting board 20,22 are located respectively at four corners of the supporting board 20,22. Two pulling-resistance cables 30 are implemented. Each pulling-resistance cable 30 is mounted through the ring 202 on one of the corners on the first supporting board 20, extends downward inclinedly, is mounted through the ring 222 on the diagonal corner of the second supporting board 22, extends upward inclinedly, and is then mounted through the ring 202 on a diagonal corner on an adjacent side of the first supporting board 20. Thus, the puling-resistant cables 30 are mounted through the rings 202,222 on the first and second supporting boards 20,22 in such a sequence so as to form four pairs of diagonal lines crossed with each other respectively on four sides of the energy absorber.
With reference to FIG. 9, in the ninth embodiment, four rings 202,222 are implemented on each supporting board 20,22. The four rings 202,222 on each supporting board 20,22 are located respectively at four corners of the supporting board 20,22. One pulling-resistance cable 30 is implemented. The pulling-resistance cable 30 is mounted through the rings 202,222 on the first and second supporting boards 20,22 to form a longitudinal extension segment and a lateral extension segment that is connected with the longitudinal extension segment on each side of the energy absorber. The longitudinal extension segments and the lateral extension segments are disposed around the shock absorber 10.
With reference to FIG. 10, in the tenth embodiment, four rings 202,222 are implemented on each supporting board 20,22. The four rings 202,222 on each supporting board 20,22 are located respectively at four corners of the supporting board 20,22. One pulling-resistance cable 30 is implemented. The pulling-resistance cable 30 is mounted through the ring 222 on one of the corners of the second supporting board 22, extends upward vertically, is mounted through the aligned ring 202 on the first supporting board 20, extends downward inclinedly, and is mounted through the ring 222 on the diagonal corner of the second supporting board 22, extends upward vertically, and is then mounted through the aligned ring 202 on the first supporting board 20. Accordingly, the pulling-resistance cable 30 is mounted through the rings 202,222 on the first and second supporting boards 20,22 in such a sequence to form multiple N-shaped bends respectively on sides of the energy absorber. The N-shaped bends are arranged around the shock absorber 10. In addition, the pulling-resistance cable 30 is mounted through the rings 202,222 on the first and second supporting boards 20,22 in a sequence to form multiple reversed N-shaped bends respectively on sides of the energy absorber. The reversed N-shaped bends are arranged around the shock absorber 10.
With reference to FIG. 11, in the eleventh embodiment, four rings 202,222 are implemented on each supporting board 20,22. The four rings 202,222 on each supporting board 20,22 are located respectively at four corners of the supporting board 20,22. One pulling-resistance cable 30 is implemented. The pulling-resistance cable 30 is mounted through the ring 202 on one of the corners of the first supporting board 20, extends downward vertically, is mounted through the aligned ring 222 on the second supporting board 22, extends upward inclinedly, and is mounted through the ring 202 on the diagonal corner of the first supporting board 20, extends downward vertically, and is then mounted through the aligned ring 222 on the second supporting board 22. Accordingly, the pulling-resistance cable 30 is mounted through the rings 202,222 on the first and second supporting boards 20,22 in such a sequence to form multiple reversed N-shaped bends and multiple lateral extension segments that are connected respectively with the reversed N-shaped bends alternately on sides of the energy absorber. The reversed N-shaped bends and the lateral extension segments are arranged around the shock absorber 10. In addition, the pulling-resistance cable 30 is mounted through the rings 202,222 on the first and second supporting boards 20,22 in a sequence to form multiple N-shaped bends and multiple lateral extension segments that are connected respectively with the N-shaped bends alternately on sides of the energy absorber. The N-shaped bends and the lateral extension segments are arranged around the shock absorber 10.
With reference to FIG. 12, in the twelfth embodiment, eight rings 202,222 are implemented on each supporting board 20,22. The eight rings 202,222 on each supporting board 20,22 are located respectively at middles of four side edges and four corners of the supporting board 20,22. One pulling-resistance cable 30 is implemented. The pulling-resistance cable 30 is mounted through the ring 202 on one of the corners of the first supporting board 20, extends downward vertically, is mounted through the aligned ring 222 on the second supporting board 22, extends laterally, and is mounted through the adjacent ring 222 on the second supporting board 22, extends upward vertically, is mounted through the aligned ring 202 on the first supporting board 20, extends laterally, and is then mounted through the adjacent ring 202 on the first supporting board 20. Accordingly, the pulling-resistance cable 30 is mounted through the rings 202,222 on the first and second supporting boards 20,22 in such a sequence to form a quadrangular wave arranged around the shock absorber 10. The quadrangular wave may be square or rectangular.
With reference to FIG. 13, in the thirteenth embodiment, eight rings 202,222 are implemented on each supporting board 20,22. The eight rings 202,222 on each supporting board 20,22 are located respectively at middles of four side edges and four corners of the supporting board 20,22. One pulling-resistance cable 30 is implemented. The pulling-resistance cable 30 is mounted through the ring 202 on one of the corners of the first supporting board 20, extends downward vertically, is mounted through the aligned ring 222 on the second supporting board 22, extends upward inclinedly, and is mounted through the adjacent ring 202 on the first supporting board 20, extends downward vertically, and is then mounted through the aligned ring 222 on the second supporting board 22. Accordingly, the pulling-resistance cable 30 is mounted through the rings 202,222 on the first and second supporting boards 20,22 in such a sequence to form an N-shaped or a reversed N-shaped wave arranged around the shock absorber 10.
With reference to FIG. 14, in the fourteenth embodiment, six rings 202,222 are implemented on each supporting board 20,22. The six rings 202,222 on each supporting board 20,22 are located respectively at middles of two opposite side edges and four corners of the supporting board 20,22. One pulling-resistance cable 30 is implemented. The pulling-resistance cable 30 is mounted through the ring 222 on one of the corners of the second supporting board 22, extends upward vertically, is mounted through the aligned ring 202 on the first supporting board 20, extends downward inclinedly, and is mounted through the ring 222 on the middle of the corresponding side edge of the second supporting board 22, extends upward inclinedly, is mounted through the ring 202 on the corner at the same side edge of the first supporting board 20, extends downward vertically, is mounted through the aligned ring 222 on the second supporting board 22, extends upward inclinedly, is mounted through the ring 202 on the middle of the adjacent side edge of the first supporting board 20, extends downward inclinedly, and is then mounted through the ring 222 on the other corner of the same side edge of the second supporting board 22. Accordingly, the pulling-resistance cable 30 is mounted through the rings 202,222 on the first and second supporting boards 20,22 in such a sequence to form multiple M-shaped segments and inverse V-shaped segments connected with each other in an alternate manner and arranged around the shock absorber 10.
With reference to FIG. 15, in the fifteenth embodiment, six rings 202,222 are implemented on each supporting board 20,22. The six rings 202,222 on each supporting board 20,22 are located respectively at middles of two opposite side edges and four corners of the supporting board 20,22. One pulling-resistance cable 30 is implemented. The pulling-resistance cable 30 is mounted through the ring 202 on one of the corners of the first supporting board 20, extends downward vertically, is mounted through the aligned ring 222 on the second supporting board 22, extends upward inclinedly, and is mounted through the ring 202 on the middle of the corresponding side edge of the first supporting board 20, extends downward inclinedly, is mounted through the ring 222 on the corner at the same side edge of the second supporting board 22, extends upward vertically, is mounted through the aligned ring 202 on the first supporting board 20, extends downward inclinedly, is mounted through the ring 222 on the middle of the adjacent side edge of the second supporting board 22, extends upward inclinedly, and is then mounted through the ring 202 on the other corner of the same side edge of the first supporting board 20. Accordingly, the pulling-resistance cable 30 is mounted through the rings 202,222 on the first and second supporting boards 20,22 in such a sequence to form multiple W-shaped segments and V-shaped segments connected with each other in an alternate manner and arranged around the shock absorber 10.
With reference to FIG. 16, in the sixteenth embodiment, the supporting boards 20A,22A are round, and the cross section of the shock absorber 10 is square. Four rings 202A,222A are mounted on each supporting board 20A,22A, and one pulling-resistance cable 30 is mounted between the supporting boards 20A,22A. The pulling-resistance cable 30 is mounted through the rings 202A,222A in a sequence as that shown in FIG. 1 to form multiple V-shaped pulling-resistance sections respectively on sides of the energy absorber.
With reference to FIG. 17, in the seventeenth embodiment, each supporting board 20A, 22A has four rings 202A, 222A, and one pulling-resistance cable 30 is mounted between the supporting boards 20A,22A. The pulling-resistance cable 30 is mounted through the rings 202A,222A in a sequence as that shown in FIG. 2 to form multiple inverse V-shaped pulling-resistance sections respectively on sides of the energy absorber.
With reference to FIG. 18, in the eighteenth embodiment, each supporting board 20A,22A has eight rings 202A,222A, and two pulling-resistance cables 30 are mounted between the supporting boards 20A,22A. The pulling-resistance cables 30 are mounted through the rings 202A,222A in a sequence as that shown in FIG. 3 to form multiple V-shaped pulling-resistance sections and multiple inverse V-shaped pulling-resistance sections on sides of the energy absorber.
With reference to FIG. 19, in the nineteenth embodiment, the first supporting board 20A has four rings 202A, and the second supporting board 22A has two rings 222A. Two pulling-resistance cables 30 are mounted between the supporting boards 20A,22A. The pulling-resistance cables 30 are mounted through the rings 202A,222A in a sequence as that shown in FIG. 4 to form two inverse triangular loops respectively on two sides of the energy absorber.
With reference to FIG. 20, in the twentieth embodiment, the first supporting board 20A has two rings 202A, and the second supporting board 22A has four rings 222A. Two pulling-resistance cables 30 are mounted between the supporting boards 20A,22A. The pulling-resistance cables 30 are mounted through the rings 202A,222A in a sequence as that shown in FIG. 5 to form two triangular loops respectively on two sides of the energy absorber.
With reference to FIG. 21, in the twenty-first embodiment, each supporting board 20A,22A has four rings 202A,222A, and two pulling-resistance cables 30 are mounted between the supporting boards 20A,22A. The pulling-resistance cables 30 are mounted through the rings 202A,222A in a sequence as that shown in FIG. 6 to form a quadrangular loop with two diagonal lines crossed with each other on a side of the energy absorber.
With reference to FIG. 22, in the twenty-second embodiment, each supporting board 20A,22A has four rings 202A,222A, and two pulling-resistance cables 30 are mounted between the supporting boards 20A,22A. The pulling-resistance cables 30 are mounted through the rings 202A,222A in a sequence as that shown in FIG. 7 to form two quadrangular loops respectively on two sides of the energy absorber.
With reference to FIG. 23, in the twenty-third embodiment, each supporting board 20A,22A has four rings 202A,222A, and two pulling-resistance cables 30 are mounted between the supporting boards 20A,22A. The pulling-resistance cables 30 are mounted through the rings 202A,222A in a sequence as that shown in FIG. 8 to form four pairs of diagonal lines crossed with each other respectively on four sides of the energy absorber.
With reference to FIG. 24, in the twenty-fourth embodiment, each supporting board 20A,22A has four rings 202A,222A, and one pulling-resistance cable 30 is mounted between the supporting boards 20A,22A. The pulling-resistance cable 30 is mounted through the rings 202A,222A in a sequence as that shown in FIG. 9 to form multiple longitudinal extension segments and multiple lateral extension segments that are connected respectively with the longitudinal extension segments respectively on sides of the energy absorber.
With reference to FIG. 25, in the twenty-fifth embodiment, each supporting board 20A,22A has four rings 202A,222A, and one pulling-resistance cable 30 is mounted between the supporting boards 20A,22A. The pulling-resistance cable 30 is mounted through the rings 202A,222A in a sequence as that shown in FIG. 10 to form multiple N-shaped bends respectively on sides of the energy absorber.
With reference to FIG. 26, in the twenty-sixth embodiment, each supporting board 20A,22A has four rings 202A,222A, and one pulling-resistance cable 30 is mounted between the supporting boards 20A,22A. The pulling-resistance cable 30 is mounted through the rings 202A,222A in a sequence as that shown in FIG. 11 to form multiple inverse N-shaped bends and multiple lateral extension segments that are connected respectively with the inverse N-shaped bends alternately on sides of the energy absorber.
With reference to FIG. 27, in the twenty-seventh embodiment, each supporting board 20A,22A has eight rings 202A,222A, and one pulling-resistance cable 30 is mounted between the supporting boards 20A,22A. The pulling-resistance cable 30 is mounted through the rings 202A,222A in a sequence as that shown in FIG. 12 to form a quadrangular wave arranged around the shock absorber 10.
With reference to FIG. 28, in the twenty-eighth embodiment, each supporting board 20A,22A has eight rings 202A,222A, and one pulling-resistance cable 30 is mounted between the supporting boards 20A,22A. The pulling-resistance cable 30 is mounted through the rings 202A,222A in a sequence as that shown in FIG. 13 to form an N-shaped or a reversed N-shaped wave arranged around the shock absorber 10.
With reference to FIG. 29, in the twenty-ninth embodiment, each supporting board 20A,22A has six rings 202A,222A, and one pulling-resistance cable 30 is mounted between the supporting boards 20A,22A. The pulling-resistance cable 30 is mounted through the rings 202A,222A in a sequence as that shown in FIG. 14 to form multiple M-shaped segments and inverse V-shaped segments connected with each other in an alternate manner and arranged around the shock absorber 10.
With reference to FIG. 30, in the thirtieth embodiment, each supporting board 20A,22A has six rings, 202A,222A and one pulling-resistance cable 30 is mounted between the supporting boards 20A,22A. The pulling-resistance cable 30 is mounted through the rings 202A,222A in a sequence as that shown in FIG. 15 to form multiple W-shaped segments and V-shaped segments connected with each other in an alternate manner and arranged around the shock absorber 10.
Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
