TWM557040U - Pull tab assembly structure of zipper and flexible piece thereof - Google Patents

Abstract

The present invention discloses a zipper head assembly structure and an elastic member thereof. The elastic member is disposed on a slider. The slider has a first front end mating portion, a first intermediate mating portion, and a first rear end mating portion. The elastic member includes an intermediate body, a first extension body, and a second extension body. The first extension body has a second front end engagement portion that cooperates with the first front end engagement portion, the intermediate body has a second intermediate engagement portion that cooperates with the first intermediate engagement portion, and the second extension body has a first a second rear end fitting portion that the rear end fitting portions cooperate with each other. The second intermediate engaging portion extends inwardly from the intermediate body, and the relationship between the intermediate body and the second intermediate engaging portion conforms to the following formula: (W1-W2)/2≧W2, wherein W1 is the width of the intermediate body, and W2 is the first The width of the intermediate portion is increased to increase the structural strength of the intermediate body, thereby increasing the structural strength of the elastic member as a whole.

Description

Zipper head combination structure and elastic member

The present invention relates to a combined structure and an elastic member thereof, and more particularly to a zipper head assembly structure and an elastic member thereof.

The basic pull-in elements of common clothing are nothing more than the use of buttons or zippers. Compared to buttons, the zipper structure has better usability and stronger structural characteristics. The general zipper structure has a zipper head and a zipper tape, and the zipper head mainly cooperates with the zipper tape as a zipper structure for reciprocatingly pulling the connecting component, so that the zipper structure is more popular in clothing and accessories. However, the structural strength of the shrapnel used in the prior art zipper head still has a resizable space.

The technical problem to be solved by the present invention is to provide a zipper head assembly structure and an elastic member thereof for the deficiencies of the prior art.

In order to solve the above technical problem, one of the technical solutions adopted by the present invention is to provide a zipper head assembly structure, the zipper head assembly structure comprising: a sliding member, an elastic member and a pulling member. The sliding member has a bottom end sliding body, a top end sliding body corresponding to the bottom end sliding body, and a side end connected between an end of the bottom end sliding body and an end of the top end sliding body The connecting body, wherein the top sliding body has a first front end engaging portion and a first intermediate engaging portion, and the side end connecting body has a first rear end engaging portion. The elastic member is disposed on the sliding member, wherein the elastic member has an intermediate body, a first extension body extending outwardly from one side end of the intermediate body, and a middle extension body a second extension body extending outwardly from the other side end of the body, the first extension The extending body has a second front end engaging portion that cooperates with the first front end engaging portion, the intermediate body has a second intermediate engaging portion that cooperates with the first intermediate engaging portion, and the second extension The body has a second rear end engaging portion that cooperates with the first rear end engaging portion. A pivoting portion of the pulling member is pivotally disposed between the sliding member and the elastic member. The first front end mating portion, the first intermediate mating portion, and the first rear end mating portion and the second front end mating portion, the second intermediate mating portion, and the second rear end, respectively The mating portions cooperate with each other such that the elastic member is restrained on the slider. Wherein the second intermediate fitting portion extends inwardly from the intermediate body, and the relationship between the intermediate body and the second intermediate mating portion conforms to the following formula: (W1-W2)/2≧W2, wherein W1 is the width of the intermediate body, and W2 is the width of the second intermediate fitting portion.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a zipper head assembly structure, the zipper head assembly structure comprising: a sliding member, an elastic member and a pulling member. The sliding member has a first front end engaging portion, a first intermediate engaging portion and a first rear end engaging portion. The elastic member is disposed on the sliding member, wherein the elastic member has a second front end engaging portion that cooperates with the first front end engaging portion, and a first matching portion with the first intermediate engaging portion a second intermediate fitting portion and a second rear end engaging portion that cooperates with the first rear end engaging portion. A pivoting portion of the pulling member is pivotally disposed between the sliding member and the elastic member. Wherein the second intermediate fitting portion extends inwardly from an intermediate body of the elastic member, and the relationship between the intermediate body and the second intermediate fitting portion conforms to the following formula: (W1-W2)/2 ≧W2, wherein W1 is the width of the intermediate body, and W2 is the width of the second intermediate fitting portion.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide an elastic member, the elastic member is disposed on a sliding member, and the sliding member has a first front end engaging portion and a first The intermediate fitting portion and a first rear end engaging portion, the elastic member includes: an intermediate body, a first extending body, and a second extending body. Extending the first extension body from one side end of the intermediate body Stretch out. The second extension extends outwardly from the other side end of the intermediate body. The first extension body has a second front end engagement portion that cooperates with the first front end engagement portion, and the intermediate body has a second intermediate engagement portion that cooperates with the first intermediate engagement portion. And the second extension body has a second rear end fitting portion that cooperates with the first rear end engagement portion. Wherein the second intermediate fitting portion extends inwardly from the intermediate body, and the relationship between the intermediate body and the second intermediate mating portion conforms to the following formula: (W1-W2)/2≧W2, wherein W1 is the width of the intermediate body, and W2 is the width of the second intermediate fitting portion.

One of the beneficial effects of the present invention is that the zipper head assembly structure and the elastic member thereof can be provided by the creation of the first extension body having a second front end that cooperates with the first front end engagement portion. a mating portion, the intermediate body has a second intermediate engaging portion that cooperates with the first intermediate engaging portion, and the second extending body has a second rearward engagement with the first rear end engaging portion The end fitting portion and the second intermediate fitting portion extend inwardly from the intermediate body, and the relationship between the intermediate body and the second intermediate fitting portion conforms to the following formula: (W1-W2)/2 ≧W2, wherein W1 is the width of the intermediate body, and W2 is the width of the second intermediate fitting portion, to enhance the structural strength of the intermediate body, thereby improving the overall structural strength of the elastic member.

In order to further understand the features and technical contents of this creation, please refer to the following detailed description and drawings of the present invention. However, the drawings are provided for reference and description only, and are not intended to limit the creation.

Z‧‧‧Zipper head combination structure

1‧‧‧Sliding parts

11‧‧‧Bottom sliding body

1100‧‧‧First inclined guide surface

12‧‧‧Top sliding body

1200‧‧‧Second inclined guide surface

1201‧‧‧First front opening

1202‧‧‧First intermediate opening

121‧‧‧ First front end fitting

122‧‧‧First Intermediate Matching Department

1221‧‧‧ first left inner surface

1222‧‧‧ first right inner surface

1223‧‧‧Second left inner surface

1224‧‧‧ second right inner surface

1225‧‧‧ front side inner surface

R1‧‧‧First accommodation space

R2‧‧‧Second space

13‧‧‧Top sliding body

1300‧‧‧Limited space

13001‧‧‧ positioning groove

131‧‧‧First back end coordination department

2‧‧‧Flexible parts

20‧‧‧Intermediary ontology

2000‧‧‧second intermediate opening

201‧‧‧Second intermediate matching department

202‧‧‧ side frame

21‧‧‧First extension

2100‧‧‧Second front opening

211‧‧‧Second front end matching department

22‧‧‧Second extension

221‧‧‧Second back end coordination department

3‧‧‧ Pulling parts

30‧‧‧ pivotal department

W1‧‧‧Width

W2‧‧‧Width

W3‧‧‧Width

FIG. 1 is an exploded perspective view showing a zipper head assembly structure according to an embodiment of the present invention.

FIG. 2 is a partially exploded perspective view showing the zipper head assembly structure of one embodiment of the present invention.

FIG. 3 is a schematic view showing the combination of the zipper head assembly structure of one embodiment of the present invention.

4 is a top plan view of a slider of the slider assembly of one of the embodiments of the present invention.

FIG. 5 is a side cross-sectional view showing the slider of the slider assembly of one embodiment of the present invention.

FIG. 6 is a top plan view of the elastic member of the zipper head assembly structure of one embodiment of the present invention.

Fig. 7 is a side cross-sectional view showing the elastic member of the zipper head assembly of one embodiment of the present invention.

FIG. 8 is a top plan view of the pulling member of the zipper head assembly structure of one embodiment of the present invention.

FIG. 9 is a side cross-sectional view showing the pulling member of the zipper head assembly structure of one embodiment of the present invention.

FIG. 10 is a side cross-sectional view showing the zipper head assembly of one embodiment of the present invention when the pulling member is in a flat state.

FIG. 11 is a side cross-sectional view showing the zipper head assembly of one embodiment of the present invention when the pulling member is in an upright state.

The following is a specific embodiment to explain the implementation of the "zipper head assembly structure and its elastic members" disclosed in the present disclosure, and those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in the present specification. The present invention can be implemented or applied in various other specific embodiments. The details of the present specification can also be variously modified and changed without departing from the concept of the present invention. In addition, the drawings of the present creation are only for the purpose of simple illustration, and are not stated in advance according to the actual size. The following embodiments will further explain the related technical content of the present invention, but the disclosure is not intended to limit the scope of protection of the present invention.

[Examples]

In the following description, please refer to FIG. 1 to FIG. 10 , one embodiment of the present invention provides a zipper head assembly structure Z, which includes a sliding member 1 , an elastic member 2 and a pulling member 3 , and an elastic member 2 . Set on the slider 1 and one of the pull members 3 The pivoting portion 30 is pivotally disposed between the slider 1 and the elastic member 2.

First, as shown in FIG. 1, FIG. 4 and FIG. 5, the slider 1 has a bottom end sliding body 11, a top end sliding body 12 corresponding to the bottom end sliding body 11, and an end connected to the bottom end sliding body 11 and The top end sliding body 13 between the one end of the top sliding body 12, so that the bottom end sliding body 11, the top end sliding body 13, and the top end sliding body 12 are sequentially connected to form a U-shaped structure. In addition, the top sliding body 12 has a first front end engaging portion 121 and a first intermediate engaging portion 122, and the top end sliding body 13 has a first rear end engaging portion 131.

Furthermore, as shown in FIG. 1, FIG. 6, and FIG. 7, the elastic member 2 has an intermediate body 20, a first extension body 21 extending outwardly from one side end of the intermediate body 20, and a slave body intermediate body. The other one end of the 20 extends outwardly from the second extension 22. In addition, the first extension body 21 has a second front end engagement portion 211 for cooperating with the first front end engagement portion 121, and the intermediate body 20 has a second intermediate engagement portion for cooperating with the first intermediate engagement portion 122. 201, and the second extension body 22 has a second rear end fitting portion 221 for cooperating with the first rear end fitting portion 131. Furthermore, as shown in FIG. 1 , FIG. 3 and FIG. 10 , the first front end mating portion 121 , the first intermediate mating portion 122 , and the first rear end mating portion 131 are respectively coupled to the second front end mating portion 211 and the second intermediate portion. The fitting portion 201 and the second rear end fitting portion 221 are fitted to each other such that the elastic member 2 is restrained on the slider 1.

It should be noted that, as shown in FIG. 1 , FIG. 6 and FIG. 7 , the second intermediate fitting portion 201 will extend inwardly from the intermediate body 20 (that is, the second intermediate fitting portion 201 will face from the intermediate body 20 . The direction of the slider 1 extends, and the relationship between the intermediate body 20 and the second intermediate fitting portion 201 conforms to the following formula: (W1-W2)/2≧W2, where W1 is the width of the intermediate body 20, and W2 is the first The width of the second intermediate fitting portion 201. Thereby, the structural strength of the intermediate body 20 is increased, thereby improving the overall structural strength of the elastic member 2.

Furthermore, as shown in FIG. 1 , FIG. 4 (or FIG. 5 ) and FIG. 6 (or FIG. 7 ), the top sliding body 12 has a first front opening 1201 and a first intermediate opening. The first front end engaging portion 121 extends outwardly from the first front end opening 1201, and the first intermediate engaging portion 122 extends outwardly from the first intermediate opening 1202 (that is, the first intermediate fit) The portion 122 will extend from the first intermediate opening 1202 in a direction away from the slider 1). In addition, the first extension body 21 has a second front end opening 2100, and the intermediate body 20 has a second intermediate opening 2000. The second front end fitting portion 211 may be the second front end opening 2100, and the second intermediate fitting portion 201 may extend inwardly from the second intermediate opening 2000 (that is, the second intermediate fitting portion 201 may be from the second intermediate opening 2000 extends toward the direction facing the slider 1). In addition, the top sliding body 13 has a limiting space 1300 for accommodating the second extending body 22 , and the first rear end engaging portion 131 can be a positioning groove 13301 formed in the limiting space 1300 .

Furthermore, as shown in FIG. 1, FIG. 4 (or FIG. 5), FIG. 6 (or FIG. 7) and FIG. 10 (or FIG. 11), one end of the first extension body 21 is inserted and passed through the first The front end opening 1201 and the first front end fitting portion 121 are inserted through the second front end opening 2100 and are engaged with the second front end opening 2100. In addition, the second intermediate fitting portion 201 is inserted through the first intermediate opening 1202 and abuts against the first intermediate fitting portion 122 (as shown in FIG. 11), and the second rear end engaging portion 221 of the second extending body 22 is The positioning recess 13001 of the limiting space 1300 is inserted into the positioning groove 13001 and is engaged with the positioning groove 13001.

It should be noted that, as shown in FIG. 1 , the outer edge of the bottom end sliding body 11 has two first inclined guiding surfaces 1100 respectively disposed at opposite end sides of the top end sliding body 13 , and the top sliding body 12 The outer edge has two second inclined guiding faces 1200 respectively disposed beside the opposite side ends of the top sliding body 13, and the two first inclined guiding faces 1100 face the two second inclined guiding faces 1200, respectively. Thereby, the present invention can increase the smoothness of the zipper head assembly structure Z when sliding on the zipper bar (not shown) by the cooperation of the first inclined guiding surface 1100 and the second inclined guiding surface 1200 facing each other. degree.

It should be noted that, as shown in FIG. 4 and FIG. 5, the first intermediate mating portion 122 Having a first left inner surface 1221, a first right inner surface 1222 corresponding to the first left inner surface 1221, a second left inner surface 1223 immediately adjacent to the first left inner surface 1221, and a second left inner surface A second right inner surface 1224 adjacent to the first right inner surface 1222 and a front side inner surface 1225 coupled between the second left inner surface 1223 and the second right inner surface 1224. In addition, the first intermediate portion 122 has a first accommodating space R1 and a second accommodating space R2, and the width of the first accommodating space R1 is greater than the width of the second accommodating space R2. In addition, the first accommodating space R1 is formed between the first left inner surface 1221 and the first right inner surface 1222 and communicates with the first intermediate opening 1202, and the second accommodating space R2 is formed on the second left inner surface. 1223, the second right inner surface 1224 and the front inner surface 1225 are connected to each other and communicate with the first accommodation space R1.

As described above, the second intermediate portion 201 passes through the first accommodating space R1 and the second accommodating space R2. For example, as shown in FIG. 5 and FIG. 10, when the pulling member 3 has not been moved upward and is in a state parallel to the horizontal line (that is, when the pulling member 3 is in the flat state), it is located at the first receiving position. The volume of a portion of the second intermediate fitting portion 201 in the space R1 may be smaller than the volume of another portion of the second intermediate fitting portion 201 located in the second housing space R2. As shown in FIG. 5 and FIG. 11, when the pulling member 3 has been moved upward and is in a state perpendicular to the horizontal line (that is, when the pulling member 3 is in the upright state), the first position is located in the first accommodating space R1. The volume of one of the two intermediate fitting portions 201 may be larger than the volume of the other portion of the second intermediate fitting portion 201 located in the second housing space R2. That is, the volume of a part of the second intermediate fitting portion 201 located in the first accommodating space R1 may be smaller than (as shown in FIG. 10) or larger than (as shown in FIG. 11) in the second accommodating space. The volume of another portion of the second intermediate fitting portion 201 within R2.

In particular, as shown in FIG. 1 and FIG. 6, the intermediate body 20 has two side frame portions 202 separated by the second intermediate fitting portion 201, and a wide portion of one of the two side frame portions 202. W3 may be greater than or equal to the width W2 of the second intermediate fitting portion 201. For example, the second intermediate mating portion 201 can be disposed on the intermediate body At a central position of 20, and the wide portion W3 of each side frame portion 202 may be greater than or equal to the width W2 of the second intermediate fitting portion 201, for example, the wide portion W3 of the side frame portion 202 may be 1.3 ± 0.05 mm, and the second The width W2 of the intermediate fitting portion 201 may be 1.2 ± 0.05 mm. Thereby, the structural strength of the intermediate body 20 is increased, thereby improving the overall structural strength of the elastic member 2.

[Advantageous Effects of Embodiments]

One of the advantages of the present invention is that the zipper head assembly structure Z and the elastic member 2 thereof are provided by the present invention, and the first extension body 21 has a second front end that cooperates with the first front end engagement portion 121. The second body 20 has a second intermediate engaging portion 201 that cooperates with the first intermediate engaging portion 122, and the second extending body 22 has a second rear end that cooperates with the first rear engaging portion 131. The portion 221" and the "second intermediate fitting portion 201 extend inwardly from the intermediate body 20, and the relationship between the intermediate body 20 and the second intermediate fitting portion 201 conforms to the following formula: (W1-W2)/2≧W2, where W1 The width of the intermediate body 20, W2 is the width of the second intermediate fitting portion 201, to enhance the structural strength of the intermediate body 20, thereby improving the overall structural strength of the elastic member 2.

The above disclosure is only a preferred and feasible embodiment of the present invention, and is not intended to limit the scope of the patent application of the present invention. Therefore, any equivalent technical changes made by using the present specification and the content of the schema are included in the application for this creation. Within the scope of the patent.

Claims (10)

A zipper head assembly structure, the zipper head assembly structure comprising: a sliding member having a bottom end sliding body, a top end sliding body corresponding to the bottom end sliding body, and a sliding portion connected to the bottom end a side end connector between an end of the body and a distal end of the top slider, wherein the top slider has a first front end mating portion and a first intermediate mating portion, and the side end connector Having a first rear end engaging portion; an elastic member, the elastic member is disposed on the sliding member, wherein the elastic member has an intermediate body extending outward from one side end of the intermediate body a first extension body and a second extension body extending outwardly from the other side end of the intermediate body, the first extension body having a first mating portion with the first front end a front end engaging portion, the intermediate body has a second intermediate engaging portion that cooperates with the first intermediate engaging portion, and the second extending body has a first matching portion with the first rear end engaging portion Second back coordination And a pulling member, a pivoting portion of the pulling member is pivotally disposed between the sliding member and the elastic member; wherein the first front end engaging portion, the first intermediate engaging portion, and The first rear end fitting portion cooperates with the second front end fitting portion, the second intermediate fitting portion, and the second rear end fitting portion, respectively, such that the elastic member is restrained on the sliding member The second intermediate fitting portion extends inwardly from the intermediate body, and the relationship between the intermediate body and the second intermediate fitting portion conforms to the following formula: (W1-W2)/2≧W2 Where W1 is the width of the intermediate body and W2 is the width of the second intermediate fitting portion. The zipper head assembly of claim 1, wherein the top slider has a first front opening and a first intermediate opening, the first front engaging portion Extending outwardly from the first front end opening, and the first intermediate mating portion extends outwardly from the first intermediate opening, wherein the first extending body has a second front end opening, The intermediate body has a second intermediate opening, the second front end engaging portion is the second front end opening, and the second intermediate engaging portion extends inwardly from the second intermediate opening, wherein the An end of an extension body passes through the first front end opening, the first front end engagement portion passes through the second front end opening and is in a snap fit with the second front end opening, and the second intermediate fit Passing through the first intermediate opening and abutting the first intermediate fitting portion, wherein the side end connecting body has a limiting space for accommodating the second extending body, the first rear The end mating portion is a positioning groove formed in the limiting space, and the second rear end engaging portion of the second extending body is inserted into the positioning groove of the limiting space and The positioning grooves are snap-fitted with each other, wherein the second intermediate fit Provided at a central position of the intermediate body, the intermediate body has two side frame portions separated by the second intermediate fitting portion, and a wide portion of each of the side frame portions is greater than or equal to the second portion The width of the intermediate mating portion. The zipper head assembly according to claim 2, wherein the outer edge of the bottom end sliding body has two first inclined guiding faces respectively disposed at opposite ends of the side end connecting body. The outer edge of the top sliding body has two second inclined guiding faces respectively disposed at opposite ends of the side end connecting body, and the two first inclined guiding faces face two The second inclined guiding surface, wherein the first intermediate engaging portion has a first left inner surface, a first right inner surface corresponding to the first left inner surface, and a first right side a second left inner surface of the inner surface, a second right inner surface corresponding to the second left inner surface and adjacent to the first right inner surface, and a second left inner surface and the second a front side inner surface between the right inner surfaces, wherein the first intermediate fitting portion has a first receiving space and a second receiving space, and the first receiving space is formed on the first left inner surface With the said Between a right inner surface and a first intermediate opening, and the second accommodating space is formed on the second left inner surface, the second right inner surface, and the front inner surface And communicating with the first accommodating space, wherein the second intermediate mate passes through the first accommodating space and the second accommodating space, and is located at the first accommodating space a volume of a portion of the second intermediate fitting portion in the space is smaller or larger than a volume of another portion of the second intermediate fitting portion located in the second housing space, wherein the intermediate body has Two side frame portions separated by the second intermediate fitting portion, and a wide portion of one of the two side frame portions is greater than or equal to a width of the second intermediate fitting portion. A zipper head assembly structure, the zipper head assembly structure includes: a sliding member having a first front end engaging portion, a first intermediate engaging portion and a first rear end engaging portion; an elastic member The elastic member is disposed on the sliding member, wherein the elastic member has a second front end engaging portion that cooperates with the first front end engaging portion, and a second matching portion with the first intermediate engaging portion An intermediate engaging portion and a second rear end engaging portion that cooperates with the first rear end engaging portion; and a pulling member, a pivoting portion of the pulling member is pivotally disposed on the sliding member and the elastic portion Between the pieces; wherein the second intermediate fitting portion extends inwardly from an intermediate body of the elastic member, and the relationship between the intermediate body and the second intermediate fitting portion conforms to the following formula: (W1- W2)/2≧W2, where W1 is the width of the intermediate body and W2 is the width of the second intermediate fitting portion. The zipper head assembly according to claim 4, wherein the slider has a bottom end sliding body, a top end sliding body corresponding to the bottom end sliding body, and an end connected to the bottom end sliding body. a side end connecting body with one end of the top sliding body, the first front end engaging portion and the first intermediate engaging portion Provided on the top sliding body, and the first rear end engaging portion is disposed on the side end connecting body, wherein the elastic member has an outer side extending from one side end of the intermediate body a first extension body and a second extension body extending outwardly from the other side end of the intermediate body, the second front end mating portion being disposed on the first extension body, the second An intermediate mating portion is disposed on the intermediate body, and the second rear end mating portion is disposed on the second extension body. The zipper head assembly of claim 5, wherein the top sliding body has a first front end opening and a first intermediate opening, the first front end engaging portion extending outward from the first front end opening And the first intermediate engaging portion extends outwardly from the first intermediate opening, wherein the first extending body has a second front end opening, and the intermediate body has a second intermediate opening The second front end engaging portion is the second front end opening, and the second intermediate engaging portion extends inwardly from the second intermediate opening, wherein an end of the first extending body passes through the first a front end opening, the first front end engaging portion passes through the second front end opening and is in snap-fit engagement with the second front end opening, and the second intermediate fitting portion passes through the first intermediate opening and top Abutting the first intermediate engaging portion, wherein the side end connecting body has a limiting space for accommodating the second extending body, and the first rear end engaging portion is formed at the limit a positioning groove in the space, and the second extension The second rear end engaging portion of the body is inserted into the positioning groove of the limiting space and is engaged with the positioning groove, wherein the second intermediate engaging portion is disposed on the intermediate body The central body has two side frame portions separated by the second intermediate fitting portion, and a wide portion of each of the side frame portions is greater than or equal to a width of the second intermediate fitting portion. The zipper head assembly according to claim 6, wherein the outer edge of the bottom end sliding body has two first inclined guiding faces respectively disposed at opposite ends of the side end connecting body. The outer edge of the top sliding body has two separate sets a second inclined guiding surface disposed opposite the opposite side ends of the side end connecting body, and the two first inclined guiding surfaces respectively facing the two second inclined guiding surfaces, wherein the The first intermediate fitting portion has a first left inner surface, a first right inner surface corresponding to the first left inner surface, a second left inner surface adjacent to the first left inner surface, and a corresponding a second left inner surface adjacent to the first right inner surface and a front inner surface connected between the second left inner surface and the second right inner surface, wherein The first intermediate engaging portion has a first accommodating space and a second accommodating space, and the first accommodating space is formed between the first left inner surface and the first right inner surface and Connected to the first intermediate opening, and the second accommodating space is formed between the second left inner surface, the second right inner surface, and the front side inner surface and communicated with the a first accommodating space, wherein the second intermediate fit Passing through the first accommodating space and the second accommodating space, and a volume of a part of the second intermediate fitting portion located in the first accommodating space is smaller or larger than the first a volume of another portion of the second intermediate fitting portion in the accommodating space, wherein the intermediate body has two side frame portions separated by the second intermediate fitting portion, and the two side frames The wide portion of one of the portions is greater than or equal to the width of the second intermediate mating portion. An elastic member is disposed on a sliding member, the sliding member has a first front end engaging portion, a first intermediate engaging portion and a first rear end engaging portion, and the elastic member comprises: a middle portion a first extension body, the first extension body extending outwardly from one side end of the intermediate body; and a second extension body, the second extension body being further from the intermediate body One side end extends outwardly; wherein the first extension body has a mating portion with the first front end a second front end engaging portion, the intermediate body has a second intermediate engaging portion that cooperates with the first intermediate engaging portion, and the second extending body has a matching portion with the first rear end engaging portion a second rear end mating portion; wherein the second intermediate mating portion extends inwardly from the intermediate body, and the relationship between the intermediate body and the second intermediate mating portion conforms to the following formula: (W1- W2)/2≧W2, where W1 is the width of the intermediate body and W2 is the width of the second intermediate fitting portion. The elastic member according to claim 8, wherein the first extension body has a second front end opening, the intermediate body has a second intermediate opening, and the second front end engaging portion is the second front end opening The second intermediate fitting portion extends inwardly from the second intermediate opening, wherein the second intermediate fitting portion is disposed at a central position of the intermediate body, and the intermediate body has the second portion Two side frame portions separated by the intermediate fitting portion, and a wide portion of each of the side frame portions is greater than or equal to a width of the second intermediate fitting portion. The elastic member according to claim 8, wherein the intermediate body has two side frame portions separated by the second intermediate fitting portion, and a wide portion of one of the two side frame portions is larger than Or equal to the width of the second intermediate fitting portion.