Slider for slide fastener

Abstract

The utility model provides a puller for a zipper. The puller for the zipper can give consideration to arrangement of gaps or open holes and maintenance of good structural strength. The slider for a slide fastener comprises: an upper wing plate and a lower wing plate which are spaced apart from each other in the thickness direction and are provided facing each other; the guide column is arranged on the front side of the upper wing plate and the front side of the lower wing plate and connected between the upper wing plate and the lower wing plate, and at least one of the upper wing plate and the lower wing plate forms a multi-layer structure formed by overlapping at least a first wing plate and a second wing plate.

Description

Technical Field

[0001] This utility model relates to the technology of zippers, and more particularly to a zipper slider. Background Technology

[0002] A typical zipper usually consists of a zipper chain made up of a pair of zipper tapes and element columns mounted on the tapes, and a slider mounted on the zipper chain that opens or closes the element columns by sliding. The slider typically includes upper and lower flaps spaced apart and facing each other in the thickness direction, and a guide post connecting the upper and lower flaps. The space between the upper and lower flaps forms a channel for the element columns to pass through, and the guide post guides the opening or closing of the element columns on the zipper chain. However, in the prior art, for reasons such as weight reduction, gaps or openings are sometimes provided in the upper and lower flaps of the slider. In this case, the structural strength of the slider may be reduced. Therefore, it is necessary to improve the structure of the slider to balance the setting of gaps or openings with maintaining good structural strength. Utility Model Content

[0003] This utility model provides a zipper pull that can balance the setting of gaps or openings with maintaining good structural strength.

[0004] This utility model provides a zipper pull, comprising: an upper wing plate and a lower wing plate, which are spaced apart from each other in the thickness direction and arranged opposite to each other; and a guide post, which is disposed on the front side of the upper wing plate and the lower wing plate and connected between the upper wing plate and the lower wing plate, wherein at least one of the upper wing plate and the lower wing plate is configured as a multi-layer structure consisting of at least a first wing plate and a second wing plate overlapping.

[0005] In an embodiment of this utility model, there is a gap space between the first wing plate and the second wing plate.

[0006] In an embodiment of the present invention, the first wing plate and the second wing plate are spaced apart from each other in the thickness direction, and the gap between the first wing plate and the second wing plate forms the gap space.

[0007] In an embodiment of this utility model, a plurality of support structures extending in the thickness direction are provided in the gap space, and the support structures connect the first wing plate and the second wing plate.

[0008] In an embodiment of this utility model, the guide post has a hollow portion, and the hollow portion is in communication with the gap space.

[0009] In an embodiment of this utility model, the front end of the guide post has a discharge hole, and the discharge hole is connected to the hollow portion.

[0010] In an embodiment of the present invention, the first wing plate has at least a plurality of first openings on its lower surface, and the second wing plate has at least a plurality of second openings on its upper surface. The first wing plate and the second wing plate are in contact with each other in the thickness direction, and the first openings and the second openings are interconnected in the thickness direction to form the gap space.

[0011] In an embodiment of this utility model, the first opening and the second opening are staggered in the front-to-back direction and at least partially overlap and communicate with each other in the thickness direction.

[0012] In an embodiment of this utility model, the first wing plate and the second wing plate are respectively composed of a helical structure with pores. The first wing plate and the second wing plate are in contact with each other in the thickness direction, and the pores are interconnected in the thickness direction to form the gap space.

[0013] In an embodiment of this utility model, the upper wing plate, the lower wing plate, and the guide post are integrally formed by the spiral structure having the pores.

[0014] Based on the above, in the zipper pull of this invention, at least one of the upper and lower wing plates is configured as a multi-layer structure consisting of at least a first wing plate and a second wing plate overlapping. Thus, even if a gap or opening is formed between the first and second wing plates, the zipper pull can maintain its structural strength. Accordingly, the zipper pull of this invention can balance the setting of gaps or openings with maintaining good structural strength.

[0015] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below, and detailed descriptions are provided in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a zipper pull according to the first embodiment of this utility model;

[0017] Figure 2 yes Figure 1 The diagram shows a cross-section of a zipper cut along its length using the zipper pull.

[0018] Figure 3 yes Figure 2The diagram shows a cross-section of a zipper pull cut along its length in another variation.

[0019] Figure 4 This is a three-dimensional schematic diagram of a zipper pull according to the second embodiment of this utility model;

[0020] Figure 5 is Figure 4 The diagram shown is a top view of the zipper pull.

[0021] Figure 6 yes Figure 4 The diagram shows a cross-section of a zipper cut along its length using the zipper pull.

[0022] Figures 7A to 7C This is a schematic diagram of the cross-section of the zipper pull of the third embodiment of the present invention, cut along the length direction at three different locations.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100, 100A, 200, 300: Zipper pulls;

[0025] 110, 210, 310: Upper wingplate;

[0026] 120, 220, 320: Lower wingplate;

[0027] 130, 230, 330: Guide posts;

[0028] 132: Hollow section;

[0029] 134: Discharge port;

[0030] 140: Supporting structure;

[0031] 240: Flange;

[0032] D: Interval;

[0033] G: Pore;

[0034] L: Length direction;

[0035] OP1: First opening;

[0036] OP2: Second opening;

[0037] P11, P21, P31: First wing plate;

[0038] P12, P22, P32: Second wingplate;

[0039] S1, S2, S3: Gap space;

[0040] T: Thickness direction. Detailed Implementation

[0041] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In particular, Figure 1 This is a perspective view of the zipper pull according to the first embodiment of this utility model. Figure 2 yes Figure 1 The diagram shows a cross-section of a zipper cut along its length using the zipper pull. Figure 3 yes Figure 2 The diagram shows a cross-section of a zipper pull cut along its length in other variations. Figure 4 This is a perspective view of a zipper pull according to the second embodiment of this utility model. Figure 5 is Figure 4 The diagram shown is a top view of the zipper pull. Figure 6 yes Figure 4 The diagram shows a cross-section of a zipper cut along its length using the zipper pull. Figures 7A to 7C This is a schematic diagram of the cross-section of the zipper pull of the third embodiment of this utility model, cut along the length direction at three different locations. The following will use... Figures 1 to 3 This invention describes the specific structure of the zipper pulls 100 and 100A in the first embodiment and its variations, so as to... Figures 4 to 6 This invention describes the specific structure of the zipper pull 200 in the second embodiment of the present invention, so as to... Figures 7A to 7C The specific structure of the zipper pull 300 in the third embodiment of this utility model is described, but this utility model is not limited thereto and can be adjusted according to needs.

[0042] Please refer to Figure 1 and Figure 2In the first embodiment of this utility model, the zipper pull 100 includes an upper wing plate 110, a lower wing plate 120, and a guide post 130. The upper wing plate 110 and the lower wing plate 120 are spaced apart from each other in the thickness direction T and are arranged opposite to each other. The guide post 130 is disposed on the front side of the upper wing plate 110 and the lower wing plate 120 (for example, on one side in the front-to-back direction, i.e., the length direction L), and is connected between the upper wing plate 110 and the lower wing plate 120. Thus, the front side of the upper wing plate 110 and the lower wing plate 120 forms a guiding side, and the rear side opposite to the front side forms an open side. When the zipper pull 100 is installed on a zipper chain (not shown), the space between the upper wing plate 110 and the lower wing plate 120 forms a tooth channel for the zipper teeth to pass through, and the guide post 130 guides the opening or closing of the zipper teeth. Furthermore, at least one of the upper wing plate 110 and the lower wing plate 120 is configured as a multi-layer structure consisting of at least one first wing plate P11 and a second wing plate P12 overlapping each other (taking both the upper wing plate 110 and the lower wing plate 120 as multi-layer structures as an example). In other embodiments not shown, the multi-layer structure may also consist of three or more overlapping wing plates. This invention is not limited thereto and can be adjusted according to requirements.

[0043] Specifically, in this embodiment, as Figure 1 and Figure 2 As shown, at least one of the upper wing plate 110 and the lower wing plate 120 has a gap space S1 between its first wing plate P11 and second wing plate P12. The first wing plate P11 and the second wing plate P12 are spaced apart by a distance D in the thickness direction T, and the distance D between the first wing plate P11 and the second wing plate P12 forms the gap space S1. Furthermore, the guide post 130 has a hollow portion 132, and the hollow portion 132 communicates with the gap space S1. In addition, the front end of the guide post 130 (the end corresponding to one side in the longitudinal direction, i.e., the length direction) has a discharge hole 134, and the discharge hole 134 communicates with the hollow portion 132. Here, it is taken as an example that both the upper wing plate 110 and the lower wing plate 120 are configured as multi-layered structures. Therefore, the upper wing plate 110 and the lower wing plate 120 each have a distance D formed between the first wing plate P11 and the second wing plate P12, and the gap space S1 is formed by the distance D. Furthermore, the gap D (gap space S1) between the upper wing plate 110 and the lower wing plate 120 is connected to the hollow portion 132 of the guide post 130.

[0044] With the above configuration, in this embodiment, at least one of the upper wing plate 110 and the lower wing plate 120 is configured as a multi-layer structure formed by overlapping at least the first wing plate P11 and the second wing plate P12. Thus, even if a gap (gap space S1) is formed between the first wing plate P11 and the second wing plate P12 or an opening is provided, the zipper pull 100 can maintain structural strength. Accordingly, the zipper pull 100 can balance the setting of the gap (gap space S1) or the opening with maintaining good structural strength. Furthermore, the zipper pull 100 can achieve weight reduction through the setting of the interval D (gap space S1) between the first wing plate P11 and the second wing plate P12. Simultaneously, the gap space S1 is supported by the first wing plate P11 and the second wing plate P12 in the thickness direction T, thereby giving the zipper pull 100 good structural strength. Moreover, the zipper pull 100 can achieve further weight reduction through the setting of the hollow portion 132 of the guide post 130. Meanwhile, the zipper pull 100 can connect the gap space S1 and the hollow portion 132 to the outside through the discharge hole 134. Thus, during the formation of the gap space S1 between the first wing plate P11 and the second wing plate P12 and the hollow portion 132 of the guide post 130, the debris formed can be discharged from the discharge hole 134 communicating with the hollow portion 132. However, in other embodiments not shown, the hollow portion 132 can be omitted and the discharge hole 134 can be provided on the first wing plate P11 or the second wing plate P12, or the discharge hole 134 can be omitted altogether. This invention is not limited thereto and can be adjusted according to requirements.

[0045] Therefore, in this embodiment, as Figure 3 The zipper pull 100A in this modified example is based on the aforementioned zipper pull 100 (e.g., Figure 1 and Figure 2As shown), further structural configurations are added to improve structural strength. Specifically, in this embodiment, the zipper pull 100A has multiple support structures 140 extending in the thickness direction T within the gap space S1, and the support structures 140 connect the first wing plate P11 and the second wing plate P12. The support structures 140 can be columnar, spherical, or have raised strips, etc., and are not limited here. The opposite ends of the support structures 140 in the thickness direction T abut against the inner wall surfaces of the first wing plate P11 and the second wing plate P12, thereby supporting the first wing plate P11 and the second wing plate P12 in the thickness direction T. Alternatively, the support structure 140 can also be an integrally formed structure with the first wing plate P11 and the second wing plate P12, for example, reserving a portion of the area between the first wing plate P11 and the second wing plate P12 as the support structure 140 when forming the gap space S1. Thus, the gap space S1 is supported in the thickness direction T by the first wing plate P11, the second wing plate P12, and multiple support structures 140, thereby giving the zipper pull 100A good structural strength. However, in other embodiments not shown, only one support structure 140 may be provided, or the support structure 140 may be omitted. This invention is not limited thereto and can be adjusted according to requirements.

[0046] Please refer to Figures 4 to 6 In the second embodiment of this utility model, the zipper pull 200 includes an upper wing plate 210, a lower wing plate 220, and a guide post 230. The upper wing plate 210 and the lower wing plate 220 are spaced apart from each other in the thickness direction T and are arranged opposite to each other. The guide post 230 is disposed on the front side of the upper wing plate 210 and the lower wing plate 220 and is connected between the upper wing plate 210 and the lower wing plate 220. Furthermore, at least one of the upper wing plate 210 and the lower wing plate 220 is configured as a multi-layer structure formed by at least the overlapping of a first wing plate P21 and a second wing plate P22 (taking the case where both the upper wing plate 210 and the lower wing plate 220 are configured as multi-layer structures as an example). Thus, the zipper pull 200 has a roughly the same structural configuration as the aforementioned zipper pulls 100 and 100A. The main difference is that the gap space S2 of the zipper pull 200 is configured differently from the gap space S1 of the aforementioned zipper pulls 100 and 100A.

[0047] Specifically, in this embodiment, as Figures 4 to 6As shown, at least one of the upper wing plate 210 and the lower wing plate 220 has a gap space S2 between its first wing plate P21 and its second wing plate P22. The first wing plate P21 has at least a plurality of first openings OP1 on its lower surface (the surface facing the second wing plate P22), and the second wing plate P22 has at least a plurality of second openings OP2 on its upper surface (the surface facing the first wing plate P21). Furthermore, the first wing plate P21 and the second wing plate P22 are in contact with each other in the thickness direction T, and the first openings OP1 and second openings OP2 are interconnected in the thickness direction T to form the gap space S2. In addition, the first openings OP1 and second openings OP2 are staggered in the longitudinal direction (i.e., the length direction L) and at least partially overlap in the thickness direction T, thus being interconnected. Here, it is taken as an example that both the upper wing plate 210 and the lower wing plate 220 are configured as multi-layer structures. Therefore, the upper wing plate 210 and the lower wing plate 220 each have a plurality of first openings OP1 and a plurality of second openings OP2 formed between the first wing plate P21 and the second wing plate P22. Furthermore, the first openings OP1 and the second openings OP2 between the first wing plate P21 and the second wing plate P22 are interconnected to form a gap space S2.

[0048] With the above configuration, in this embodiment, at least one of the upper wing plate 210 and the lower wing plate 220 is configured as a multi-layer structure formed by overlapping at least the first wing plate P21 and the second wing plate P22. Thus, even if a gap (gap space S2) is formed between the first wing plate P21 and the second wing plate P22, or an opening (first opening OP1 and second opening OP2) is provided, the zipper pull 200 can maintain structural strength. Accordingly, the zipper pull 200 can balance the setting of the gap (gap space S2) or the opening (first opening OP1 and second opening OP2) with maintaining good structural strength. Furthermore, the zipper pull 200 can achieve weight reduction through the setting of the first opening OP1 and the second opening OP2 (gap space S2) between the first wing plate P21 and the second wing plate P22. Simultaneously, the gap space S2 is supported by the first wing plate P21 and the second wing plate P22 in the thickness direction T, thereby giving the zipper pull 200 good structural strength. Furthermore, the first opening OP1 and the second opening OP2 are not only provided on the corresponding first wing plate P21 and second wing plate P22, but also, when at least one of the upper wing plate 210 and lower wing plate 220 of the zipper pull 200 has a flange 240, the first opening OP1 and the second opening OP2 can be further provided on the flange 240 of the upper wing plate 210 and the lower wing plate 220, thereby further reducing weight and improving overall aesthetics (e.g., Figure 4 (As shown).

[0049] Furthermore, in this embodiment, the zipper pull 200 can achieve further weight reduction by extending the first opening OP1 and the second opening OP2 outwards. That is, the first opening OP1 is not only located on the lower surface of the first wing plate P21, but also extends further to the upper surface, penetrating the first wing plate P21. Similarly, the second opening OP2 is not only located on the upper surface of the second wing plate P22, but also extends further to the lower surface, penetrating the second wing plate P22. Thus, during the formation of the gap space S2 between the first wing plate P21 and the second wing plate P22, debris can be discharged from the first opening OP1 and the second opening OP2. In addition, the first opening OP1 and the second opening OP2 are offset in the front-rear direction, allowing at least a portion of the first opening OP1 to be covered by the second wing plate P22, and at least a portion of the second opening OP2 to be covered by the first wing plate P21, thereby improving the aesthetics of the zipper pull 200 (e.g., ...). Figure 4 and Figure 5 (See illustration). Compared to the method where the first opening OP1 and the second opening OP2 completely overlap in the front-to-back direction, the structural strength of the zipper pull 200 can be improved, thereby reducing the stress when stretched in the thickness direction T, making the zipper pull 200 less prone to deformation under force. However, in other embodiments not shown, one of the first opening OP1 and the second opening OP2 can be omitted, or the aforementioned interval D (gap space S1) can be provided between the first wing plate P21 and the second wing plate P22 to separate them in the thickness direction T. This utility model is not limited thereto, and can be adjusted according to requirements.

[0050] Please refer to Figures 7A to 7C In the third embodiment of this utility model, the zipper pull 300 includes an upper wing plate 310, a lower wing plate 320, and a guide post 330. The upper wing plate 310 and the lower wing plate 320 are spaced apart from each other in the thickness direction T and are arranged opposite to each other. The guide post 330 is disposed on the front side of the upper wing plate 310 and the lower wing plate 320 and is connected between the upper wing plate 310 and the lower wing plate 320. Furthermore, at least one of the upper wing plate 310 and the lower wing plate 320 is configured as a multi-layer structure formed by at least the overlapping of a first wing plate P31 and a second wing plate P32 (taking the case where both the upper wing plate 310 and the lower wing plate 320 are configured as multi-layer structures as an example). Thus, the zipper pull 300 has a roughly the same structural configuration as the aforementioned zipper pulls 100, 100A, and 200. The main difference is that the gap space S3 of the zipper pull 300 is configured differently from the gap space S1 of the aforementioned zipper pulls 100 and 100A and the gap space S2 of the zipper pull 200.

[0051] Specifically, in this embodiment, as Figures 7A to 7CAs shown, at least one of the upper wing plate 310 and the lower wing plate 320, the first wing plate P31 and the second wing plate P32, have a gap space S3 between them. The first wing plate P31 and the second wing plate P32 are each composed of a helical structure with pores G. The first wing plate P31 and the second wing plate P32 are in contact with each other in the thickness direction T (they can be formed separately or integrally), and the pores G are interconnected in the thickness direction T to form the gap space S3. Here, the helical structure with pores G refers to a structure composed of porous helical surfaces (Gyroid), wherein pores G are formed between the surfaces of the helical structure, and in the case of... Figures 7A to 7C As can be seen from the cross-sectional schematic diagram, the curved surface of the spiral structure and the resulting pores G are arranged in different ways at different locations. Here, we take the example where both the upper wing plate 310 and the lower wing plate 320 are configured as multi-layered structures. Therefore, the pores G between the first wing plate P31 and the second wing plate P32 are interconnected to form a gap space S3.

[0052] With the above configuration, in this embodiment, at least one of the upper wing plate 310 and the lower wing plate 320 is configured as a multi-layer structure formed by overlapping at least the first wing plate P31 and the second wing plate P32. Thus, even if a gap (gap space S3) is formed between the first wing plate P31 and the second wing plate P32, or an opening (a spiral structure aperture G) is provided, the zipper pull 300 can maintain structural strength. Accordingly, the zipper pull 300 can balance the setting of gaps (gap space S3) or openings (spiral structure aperture G) with maintaining good structural strength. Furthermore, the zipper pull 300 can achieve weight reduction through the spiral structure aperture G (gap space S3) between the first wing plate P31 and the second wing plate P32. Simultaneously, the gap space S3 is supported by the first wing plate P31 and the second wing plate P32 in the thickness direction T, thereby giving the zipper pull 300 good structural strength.

[0053] Furthermore, in this embodiment, as Figures 7A to 7CAs shown, the upper wing plate 310, lower wing plate 320, and guide post 330 of the zipper pull 300 are integrally formed from a spiral structure with pores G. That is, the pores G of the spiral structure are not only provided in the first wing plate P31 and the second wing plate P32, but also further provided in the upper wing plate 310, lower wing plate 320, and guide post 330. In other words, the entire zipper pull 300 is integrally formed from a spiral structure with pores G, and the pores G of the spiral structure are interconnected and extend outwards. Thus, the zipper pull 300 can achieve further weight reduction through the outward extension of the pores G of the spiral structure. Furthermore, during the formation of the gap space S3 between the first wing plate P31 and the second wing plate P32, debris can be discharged from the pores G. In addition, the pores G of the spiral structure are staggered in the front-to-back direction (e.g., ...). Figures 7A to 7C As shown, at least a portion of the aperture G of the first wing plate P31 can be covered by the second wing plate P32, and at least a portion of the aperture G of the second wing plate P32 can be covered by the first wing plate P31, thereby improving the aesthetics of the zipper pull 300. However, in other embodiments not shown, the helical structure with aperture G may be provided only on one of the upper wing plate 310 and the lower wing plate 320, or the aforementioned interval D (gap space S1) may be provided between the first wing plate P31 and the second wing plate P32 to separate them in the thickness direction T. This utility model is not limited thereto, and can be adjusted according to requirements.

[0054] In summary, in the zipper pull of this invention, at least one of the upper and lower wing plates is configured as a multi-layer structure consisting of at least a first wing plate and a second wing plate overlapping. Preferably, there is a gap between the first and second wing plates. This gap can be achieved using the structures described in the foregoing embodiments (including gaps formed by intervals, gaps formed by a first opening and a second opening, and gaps formed by a helical structure with pores), as long as at least one of the upper and lower wing plates is configured as a multi-layer structure consisting of at least a first wing plate and a second wing plate overlapping. Thus, even if a gap is formed between the first and second wing plates or an opening is provided, the zipper pull can maintain structural strength. Accordingly, the zipper pull of this invention can balance the setting of gaps or openings with maintaining good structural strength.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A zipper pull, characterized in that, include: The upper wing plates (110, 210, 310) and the lower wing plates (120, 220, 320) are spaced apart from each other and arranged opposite each other in the thickness direction (T); as well as Guide pillars (130, 230, 330) are disposed on the front side of the upper wing plate (110, 210, 310) and the lower wing plate (120, 220, 320), and connect between the upper wing plate (110, 210, 310) and the lower wing plate (120, 220, 320). At least one of the upper wing plate (110, 210, 310) and the lower wing plate (120, 220, 320) is configured as a multi-layer structure formed by overlapping at least the first wing plate (P11, P21, P31) and the second wing plate (P12, P22, P32).

2. The zipper pull according to claim 1, characterized in that, There are gap spaces (S1, S2, S3) between the first wing plate (P11, P21, P31) and the second wing plate (P12, P22, P32).

3. The zipper pull according to claim 2, characterized in that, The first wing plate (P11) and the second wing plate (P12) are spaced apart from each other by a distance (D) in the thickness direction (T), and The gap (D) located between the first wing plate (P11) and the second wing plate (P12) forms the gap space (S1).

4. The zipper pull according to claim 3, characterized in that, The gap space (S1) is provided with a plurality of support structures (140) extending in the thickness direction (T), and The support structure (140) connects the first wing plate (P11) and the second wing plate (P12).

5. The zipper pull according to claim 3 or 4, characterized in that, The guide post (130) has a hollow portion (132), and The hollow portion (132) is connected to the gap space (S1).

6. The zipper pull according to claim 5, characterized in that, The front end of the guide post (130) has a discharge hole (134), and The discharge hole (134) is connected to the hollow portion (132).

7. The zipper pull according to claim 2, characterized in that, The first wing plate (P21) has at least a plurality of first openings (OP1) on its lower surface. The second wing (P22) has at least a plurality of second openings (OP2) on its upper surface. The first wing plate (P21) and the second wing plate (P22) are in contact with each other in the thickness direction (T), and The first opening (OP1) and the second opening (OP2) are connected to each other in the thickness direction (T) to form the gap space (S2).

8. The zipper pull according to claim 7, characterized in that, The first opening (OP1) and the second opening (OP2) are staggered in the front-to-back direction and at least partially overlap and communicate with each other in the thickness direction (T).

9. The zipper pull according to claim 2, characterized in that, The first wing plate (P31) and the second wing plate (P32) are each composed of a helical structure with pores (G). The first wing plate (P31) and the second wing plate (P32) are in contact with each other in the thickness direction (T), and The pores (G) are interconnected in the thickness direction (T) to form the gap space (S3).

10. The zipper pull according to claim 9, characterized in that, The upper wing plate (310), the lower wing plate (320), and the guide post (330) are integrally formed by the helical structure having the pores (G).

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