JPH0650837U - Bonding structure with hook-shaped protrusions - Google Patents

Abstract

(57) [Abstract] [Purpose] A member 1 having a hook-shaped protrusion 2 and the hook-shaped protrusion 2
The backlash is eliminated in the connection with the member 3 having the through hole 4 which is inserted and engaged so that a robust connection can be obtained. [Structure] A member 1 having a hook-shaped projection 2 and the hook-shaped projection 2
In the connection with the member 3 having the through hole 4 for inserting and locking, the appropriate number of small protrusions 5 which can be crushed and deformed are provided on at least one of the joint surfaces of the two connecting members 1, 3. The small projections 5 are crushed by being pressed against the joint surface of the members, and the locking reaction between the hook-shaped projections 2 and the through holes 4 is brought into close contact with each other by the restoring reaction force to the original shape thereof. There is no play in the binding of 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a binding structure in which a member provided with a hook-shaped projection is inserted into a through hole provided in the other member to join both members.

[0002]

[Prior art]

 It is already well known that a member having a hook-shaped protrusion made of synthetic resin is inserted into the through hole of the other member to bond the two members to each other.

[0003]

[Problems to be solved by the device]

 When combining the hook-shaped projection and the through hole, consider the length of the hook-shaped projection in advance and consider the length (thickness) of the through hole to be inserted, Although it is necessary to make it tight, the hook-shaped projection is mainly an elastic structure to facilitate insertion into the through hole, and after insertion, the hook-shaped protrusion is designed to open and engage with the rim of the through hole due to elasticity. Therefore, the hook-shaped protrusion is slightly longer than the length of the through hole to ensure the engagement operation that is opened by elasticity, and as a result, in the engaged state, the joint surface of both members is loose. This is unavoidable, and there was a problem due to uncertain joining.

[0004]

[Means for Solving the Problems]

 The purpose of the present invention is to eliminate the backlash on the joint surface of both members by the above-mentioned conventional means and to make the joint surfaces of both members coincide with each other. The joint surface of both members to be joined with each other by the hook-shaped projection and the through hole. It is characterized in that a suitable number of collapsible small projections are provided on at least one or both of the joint surfaces.

[0005]

[Action]

 In the coupling structure according to the present invention, as illustrated in the drawings of the embodiments, the small protrusions 5 provided on one or both of the joint surfaces of the two coupling members 1 and 3 are joined to the joint surface of the other opposing member 1 or 3. The small protrusions 5 that are crushed by the pressure contact and thus are arranged by the crushing reaction force come into close contact with the opposing joint surfaces, and the reaction force causes the hooks 2a of the hook-shaped protrusions 2 to penetrate the holes 4 of the through holes 4. The members 1 and 3 can be joined to each other without backlash by pulling them toward the edge side to ensure a close engagement.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

In the figure, 1 is a member having a hook-shaped protrusion 2 and 3 is a member having a through hole 4 into which the hook-shaped protrusion 2 is inserted and engaged. The member 1 having the hook-shaped protrusion 2 is generally made of synthetic resin. Using the as a material, elasticity is given to the hook-shaped protrusion 2.

It should be noted that the hook-shaped projection 2 for coupling may be of any shape, such as a combination of two projections shown on the right side in the figure, or a single projection on the left side, but its protruding end is not limited. The hook portion 2a that is locked to the edge of the through hole 4 is integrally formed.

Reference numeral 5 denotes one of the joint surfaces of the two coupling members 1 and 3, or, as shown in the illustrated embodiment, a suitable number of small protrusions provided on the both joint surfaces in an appropriate distribution arrangement.

The small protrusion 5 provided on one or both of the joint surfaces of the two members 1 and 3 has an appropriate elasticity that deforms and crushes by pressing and restores the original shape when the pressing is released. Therefore, when the member 1 having the hook-shaped protrusions 2 and the member 3 having the through holes 4 are made of synthetic resin, the members 1 and 3 and the small protrusion 5 having elasticity can be formed by integral molding. It

It is to be noted that it is not necessary to form the small protrusion 5 on both the connecting members 1 and 3 as in the illustrated example, and the small protrusion 5 may be provided only on one of the joint surfaces. The joining surface of the other member facing each other may be a simple flat surface, and the material thereof does not particularly matter.

Although the connecting action by the above configuration is as described above, the disassembling of the joining members 1 and 3 after the joining is carried out without any change from the conventional case.

[0013]

[Effect of device]

 According to the present invention, an appropriate number of small protrusions that can be crushed and deformed are provided on at least one joint surface of both members that are coupled by the hook-shaped protrusion and the through hole, and the two members are joined together. , The small projection is crushed and the hook-shaped projection and the through hole are inserted and engaged with each other, so that the restoring reaction force of the small projection crushed causes both coupling members to be robust without backlash. It has the effect of binding.

[Brief description of drawings]

FIG. 1 is a cutaway side view showing an embodiment of a binding structure according to the present invention.

[Explanation of symbols]

 1,3 Connecting member 2 Hook-shaped protrusion 4 Through hole 5 Small protrusion

Claims (1)

[Scope of utility model registration request] 1. A member 1 having a hook-shaped projection 2 is inserted into a member 3 having a through hole 4 by inserting the hook-shaped projection 2 into the through hole 4 to join both members 1 and 3. A binding structure using hook-shaped projections formed by projecting an appropriate number of small projecting portions 5 that can be crushed on at least one of the joining surfaces of the members 1 and 3.