CROWN STRUCTURE OF ZIPPER HEAD
A crown structure of zipper head includes a crown and a resilient sheet. A reception cavity is indented from a bottom surface of the crown. Two abutment portions are formed at the side portions of the bottom face of the reception cavity. A recess portion is defined between the two abutment portions. The crown includes a side wall elongated respectively along the lateral side of the crown. A passage is formed respectively at the mid section of the sidewall and communicates with the reception cavity. A stop portion is disposed on each lateral side of the crown and adjacent to the passage. The resilient sheet is disposed in the reception cavity and abuts the stop portions. The resilient sheet has a through hole at each end respectively, and two opposed troughs are formed at the mid section of the lateral sides of the resilient sheet.
1. Field of the Invention
The instant disclosure relates to a crown structure, in particular, to a crown structure, applied with a resilient sheet therein, mounted onto a zipper head.
2. Description of Related Art
The conventional zipper head structure includes a body, a pull-tab, a resilient sheet, and a crown. The zipper head engages to the teeth, and there is a locking hook inside the body. When the pull-tab of the body is jerked, the pull-tab drags the locking hook to free the zipper head from the teeth. When the pull-tab of the body is stopped pulling, the resilient sheet will press the locking hook to lock onto the teeth in a locking position, such that the body does not slide off.
With respect
With the issue of varnish layer 101a overfilling the zipper head after the baking varnish process, the conventional solution is to modify the structural configuration of the crown 1a. The lateral sides of the crown 1a are curved outward, in forming a larger space therein to accommodate the extra varnish layer 101a. However, the curved structure will affect the strength of the structure of the crown 1a. Namely, the crown 1a would deform easily during the manufacturing process.
To address the above issue, the inventor researched and utilized engineering principles in providing a solution to resolve the above-mentioned shortcoming.
SUMMARY OF THE INVENTIONIn view of the aforementioned issues, a crown structure of the zipper head is disclosed. The issue is to solve the problem that the resilient sheet is choked by the over-coated varnish layer after the assembly of the zipper head.
Another object according to the present invention is to optimize the flexibility of the resilient sheet, in order to smooth the sliding of the zipper head and to save the labor effort.
To achieve the above-mentioned objectives, the present invention provides a crown structure of zipper head including a crown and a resilient sheet. The crown defines a reception cavity indented from a bottom surface of the crown, and two abutment portions formed at two lateral sides of the reception cavity. A recess portion is defined between the two abutment portions. The surface of the recess portion is lower than that of each abutment portion. The crown includes an elongated side wall arranged at each lateral side thereof. A passage is formed at the middle portions of the side walls that communicate with the reception cavity, and a stop portion is disposed on each lateral side thereof and the stop portion being adjacent to the passage. The resilient sheet is disposed in the reception cavity and abuts the two stop portions. The resilient sheet has a through hole separately on both ends, and two opposed troughs are formed at the mid section of the sides of the resilient sheet.
It is worth mentioning that there are some advantages as follows: the crown and the resilient sheet are assembled as a whole component first, and then the component is assembled to the zipper head. Therefore, the assembling steps are simplified. The two through holes help to optimize the flexibility and rigidity of the resilient sheet, thus allowing the zipper head to operate with less effort and more smoothly. In addition, the two troughs of the resilient sheet will solve the choke problem due to over-coated varnish layer and improve the issue of resistance upon pulling the zipper head.
In order to further understand the techniques, means and effects the present invention takes for achieving the prescribed objectives, the following detailed descriptions and appended drawings are hereby referred, such that, through which, the purposes, features and aspects of the present invention can be thoroughly and concretely appreciated; however, the appended drawings are merely provided for reference and illustration, without any intention to be used for limiting the present invention.
Referring now to
Referring to
With respect to
The recess portion 13 is set among the two abutment portions 12 and the two side walls 14. The two stop portions 16 are formed by bending from the corresponding side wall 14 toward the reception cavity 11. The two stop portions 16 are set diagonally. The stop portions 16 are used to prevent the resilient sheet 2 from separating off from the crown 1 while the zipper head is being pulled. The corners of the troughs 22 of the resilient sheet 2 are arch-shaped.
When assembling the zipper head, the resilient sheet 2 is disposed into the crown 1 as a whole component. A pull-tab (not shown) is disposed on the passage 15 of each side wall 14, and the whole component could be set onto the body.
After the assembly of the zipper head, a baking varnish process is required. A varnish layer 101, as shown in
With respect to
Referring to
With respect to
Based on the above, the instant invention has the following advantages. First, the two through holes 21 reduce the rigidity of the resilient sheet 2, thus allowing greater flexibility inside the recess portion 13 of the crown 1. By mounting the improved resilient sheet 2 onto the zipper head, the zipper head can be pulled with less effort than before. Besides, the through holes 21 can expel the waste materials after the resilient sheet 2 has being stamped during the manufacturing process. Secondly, the troughs 22 of the resilient sheet 2 can help to improve the issue of over-coated varnish layer from the baking varnish process of the zipper head. Also, the resistance can be minimized for pulling the zipper head. Besides, losses due to product downgrades can be reduced significantly, thus enhancing the product quality and reducing costs.
The above-mentioned descriptions represent merely the preferred embodiments of the present invention, without any intention to limit the scope of the present invention thereto. Various equivalent changes, alternations or modifications based on the claims of present invention are all consequently viewed as being embraced by the scope of the present invention.
Claims
1. A crown structure of zipper head, comprising:
- a crown having a bottom surface indented in forming a reception cavity, two abutment portions being formed at the side portions of the reception cavity, a recess portion defined in between the abutment portions and the surface of the recess portion being lower than that of the abutment portion, a side wall being elongated respectively along the lateral side of the crown, a passage formed respectively at the mid section of the side wall and communicates with the reception cavity, a stop portion being disposed respectively on each side wall and adjacent to the passage; and
- a resilient sheet disposed in the reception cavity and abutting the stop portions, the resilient sheet having a through hole at each end respectively in a closed configuration, a trough formed respectively on the corresponding mid section of the lateral side of the resilient sheet.
2. The crown structure of zipper head according to claim 1, wherein the stop portions are formed by bending from the corresponding side wall toward the reception cavity.
3. The crown structure of zipper head according to claim 1, wherein the recess portion is formed in between the two abutment portions and the two side walls.
4. The crown structure of zipper head according to claim 1, wherein the two stop portions are set diagonally.
5. The crown structure of zipper head according to claim 1, wherein the two through holes are fully slotted laterally in defining an open configuration.
6. The crown structure of zipper head according to claim 1, wherein the resilient sheet has a V-shaped cross-sectional profile, and wherein the corners of the troughs are arched-shaped.
7. The crown structure of zipper head according to claim 1, further comprising a plurality of apertures disposed on the side walls and communicates with the reception cavity.
8. The crown structure of zipper head according to claim 7, further comprising two stop levers disposed in the reception cavity and engaged to the apertures.
9. The crown structure of zipper head according to claim 1, further comprising two module plates disposed in the reception cavity and above the abutment portions.
Type: Application
Filed: Nov 29, 2010
Publication Date: May 31, 2012
Inventor: Yu-Pau Lin (Pingjhen City)
Application Number: 12/955,232
International Classification: A44B 19/26 (20060101);