JPH0589933U - Member connection structure - Google Patents

Abstract

(57) [Abstract] [Purpose] Bonding structure of members that can obtain stable bond strength without using an adhesive or a fixing screw. [Configuration] A part of one member 2 is joined to one member 2 at the joining part. An engaging piece 20 provided with a holding portion 21 for holding is provided,
The member 4 is provided with a locking portion 40 that is held by the holding portion 21, and an elastic piece 41 is provided at a distance from the locking portion 40 in the direction in which the holding portion 40 and the holding portion 21 are engaged with each other. When the second and fourth parts are coupled, the elastic piece 41 is pushed and elastically deformed by the engaging piece 20, and when the holding portion 21 holds the locking portion 40, the elastic piece 41 is elastically returned to engage the engaging piece 20. It is characterized in that the stopper 40 is prevented from coming off.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a member connecting structure for connecting two members to each other.

[0002]

[Prior Art]

 When two members, for example, dome-shaped case bodies or dome-shaped case and plate-shaped members are connected to each other, a structure in which an adhesive agent is applied to the connecting portions to connect them together, or one member is penetrated A structure is known in which the fixing screw is screwed into the other member for connection, and a structure is provided in which one member is provided with a claw to form a fitting hole in the other member and the claw is fitted into the fitting hole for connection. There is. In any connection structure, two members can be connected.

[0003]

[Problems to be solved by the device]

 However, the bonding structure using the adhesive has the problems that the bonding strength is not constant due to the unevenness of the adhesive and that the handling of the adhesive requires careful attention. The joint structure using the fixing screws has no problem in terms of joint strength, but as parts (screws) are added to increase the assembly process, the members need space for screwing. The space for screwing restricts the movement of the movable part in, for example, a toy. Further, the claw method has a feature that no parts are required outside the members to be joined, but the relative positions of the members are not stable due to deformation or displacement of the members because the claws are bent and joined. The phenomenon occurs.

Therefore, an object of the present invention is to provide a joining structure for members that can obtain stable joining strength without using an adhesive or a fixing screw.

[0005]

Means for Solving the Problems In a member connecting structure of the present invention, an engaging piece having a holding portion for holding a part of another member is provided at a connecting portion of one member, and the other member is provided. Is provided with an engaging portion to be held by the holding portion, and an elastic piece is provided at a distance from the engaging portion in the direction of engaging the holding portion with the holding portion. The engaging piece pushes the elastic piece to elastically deform it, and when the holding part holds the locking part, the elastic piece elastically returns to prevent the engaging piece from coming off the locking part. It is characterized by doing.

[0006]

[Action]

 The connecting parts of the members are aligned, the elastic piece of the other member is bent by the engaging piece of the one member, and the holding part of the engaging piece holds the engaging part of the other member in both directions. Move parts relatively. When the holding part holds the locking part, the elastic piece elastically returns to prevent the engaging piece from coming off the locking part.

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. First, in FIG. 5, an example of members connected to each other will be briefly described. The case body 1 of the toy is composed of a dome-shaped transparent upper case 2 and a fall dome-shaped opaque lower case 3, inside which the drive and movable parts of the toy body are supported. A plate-shaped substrate 4 is arranged. The upper case 2 and the substrate 4 are coupled to each other by a coupling structure described later. The board 4 and the lower case 3 are fixed to each other by fixing screws 5. The lower case 3 is formed with a peripheral wall 3 a that covers the peripheral edge of the opening of the upper case 2. The peripheral wall 3a is provided with a function of covering the connecting portion A between the upper case 2 and the substrate 4 and a function of preventing escape of an elastic piece (described later) at the time of connection.

The upper case 2, which is one member, will be described with reference to FIGS. 1 and 2. On the peripheral edge 2a of the opening of the upper case 2 made of synthetic resin, four engaging pieces 20 are formed in the same circumferential direction. The engagement piece 20 extends in the latitudinal direction from the base portion 20a extending in the longitudinal direction from the peripheral edge 2a while forming a holding portion 21 along the peripheral edge 2a. A hook portion 22 that projects toward the peripheral edge 2a is provided at the end of the engagement piece 20. The engagement piece 20 is formed to have a shape thickness capable of bending. The hook portion 22 is formed with slope portions 22a and 22b.

The substrate 4, which is the other member, will be described with reference to FIGS. 1, 3 and 4. A cam portion 4a for operating the movable portion is formed at the center of the substrate 4 as a support plate for the movable object of the action mechanism of the toy. A peripheral wall 4c having a step portion 4b with which the opening edge portion of the case 2 is fitted is formed on the peripheral edge of the substrate 4. On the peripheral wall 4c, four locking portions 40 and four elastic pieces 41 are alternately formed in the circumferential direction.

The locking portion 40 is formed by cutting out a part of the peripheral wall 4 c and the step portion 4 b, and is formed with a length and a width that are relatively densely held by the holding portion 21. An inclined surface portion 40b is formed at the end portion 40a of the locking portion 40. An engaging portion 42 with which the hook portion 22 of the engaging piece 20 is engaged is formed in the locking portion 40. A slope portion 42a is formed at one end of the engaging portion 42.

The elastic piece 41 is formed by separating the step portion 4b from the peripheral wall 4c over a length indicated by reference character L in FIG. 3 (a). As shown in FIG. 4C, the elastic piece 41 is separated from the peripheral wall 4c and is elastically deformable. The elastic piece 41 is formed with a thickness that allows elastic deformation along the peripheral wall 4c. A gap 43 is formed between the end portion 41a of the elastic piece 41 and the end portion 40a of the locking portion 40 such that the base portion 20a of the engagement piece 20 fits without rattling.

As shown in FIG. 1, the peripheral wall 4ca of the portion where the elastic piece 41 is formed has a length that covers the deformation region of the elastic piece 41 so that the elastic piece 41 that is bent is not deformed in an indefinite direction. Has been formed. On the other hand, the substrate 4 and the peripheral walls 4c and 3a of the lower case 3 which are integrated with each other form an annular groove portion B, and the elastic piece 41 is located at a position in the middle depth of the groove portion B. .. The groove portion B constitutes an engagement guide portion when the engagement piece 20 is engaged with the locking portion 40.

The operation of connecting the two members configured as described above will be described. When the members are joined together, it is possible to push and rotate them in opposite directions at the same time. However, for convenience of explanation, in the following explanation, the substrate 4 (lower case 3) is fixed. Then, an example of pushing and rotating the upper case 2 to complete the joint structure will be described.

In FIG. 1, it is assumed that the substrate 4 is fixed to the lower case 3. Therefore, between the base plate 4 and the peripheral wall 3a of the lower case 3, an annular groove B whose bottom is the step 4b is formed. First, the upper case 2 is moved as shown by an arrow a in FIG. 1A, and the engaging piece 20 of the upper case 2 is fitted into the groove portion B. Next, when the upper case 2 and the lower case 3 are pressed against each other and the cases are rotated in different directions, the elastic pieces are bent at the position where the engaging pieces 20 face the elastic pieces 41, whereby the two pieces are bent. Fit deeply.

In FIG. 1B, when the upper case 2 and the lower case 3 are fitted to a position where the opening peripheral edge 2 a contacts the step 4 b of the substrate, the elastic piece 41 is pushed by the engaging piece 20. Elastically deforms. In this state, when the upper case 2 is rotated in the direction shown by the arrow b, the engaging piece 20 is elastically deformed by the hook portion 22 at the end thereof being expanded by the engaging portion 40. Then, as shown in FIG. 1C, when the case 2 rotates to a position where the holding portion 21 holds the locking portion 40, the engaging piece 20 elastically returns to hold the locking portion and the hook portion 22. Engages with the engaging portion 42. By forming the facing ends of the engaging piece 20 and the engaging portion 40 on the inclined surfaces 22a and 40b, the engaging piece can be easily elastically deformed.

On the other hand, when the engagement piece 20 holds the locking piece 40, the elastic piece 41 elastically returns, and the tip portion 41a thereof faces the end portion 20b of the engagement piece. As shown in FIG. 1 (c), when the holding portion 21 of the engaging piece 20 holds the locking portion 40 and the elastic piece 41 prevents the engaging piece, that is, the upper case 2, from rotating, the upper case 2 is no longer the substrate. That is, it cannot be removed from the lower case 3.

When the upper case 2 is joined to the substrate 4, the annular groove portion B facilitates fitting of members to each other, and the elastic piece 41 escapes when elastically deformed by the engaging piece 20. To prevent.

As shown in FIG. 1C, when the engaging portions of the hook portion 22 and the engaging portion 42 are engaged with each other by the slope portions 22 b and 42 a, the board 4 (lower case 3) and the upper case 2 are separated from each other. The rattling of the rotation direction (arrow c) and the fitting direction (arrow a) can be suppressed, and the joining position of the members is stabilized. This can improve the mounting accuracy of the components arranged in the case body 1 (see FIG. 5).

In the illustrated embodiment, an example in which a dome-shaped member and a flat plate are connected to each other has been given, but it goes without saying that the present invention can be applied to a case where flat plates are connected to each other. Further, in the illustrated embodiment, an example in which the substrate 4 fixed to the lower case 3 and the upper case 2 are joined is described, but the engaging portion 40 and the elastic piece are provided on the inner peripheral surface of the peripheral wall 3a of the lower case 3. By providing 41, the upper case 2 and the lower case 3 can be directly coupled.

[0020]

[Effect of the device]

 According to the present invention, since only the members to be joined can be joined without using an adhesive or screws, the cost is low and the assembly is easy. Also, unlike the simple connection between the nail and the hole, the bond strength is stable. By providing the hooks on the engaging pieces, rattling-free coupling can be realized, vibration between members can be suppressed, and positioning between members can be ensured.

[Brief description of drawings]

FIG. 1A is an enlarged perspective view of an essential part of a joining structure of the present invention showing two members immediately before joining, FIG. 1B is an enlarged perspective view showing a state where an elastic piece is bent, and FIG. It is an expansion perspective view which shows the state after.

FIG. 2 is a partial sectional front view showing a dome-shaped upper case as one member.

3A is a plan view showing a substrate as the other member, FIG. 3B is a sectional view taken along line XX in FIG. 3A, and FIG.
It is the YY sectional view taken on the line in (a).

FIG. 4A is a bottom view of the substrate, and FIG. 4B is Z in FIG.
-Z line sectional drawing, (c) is an enlarged view of the D section in (a).

FIG. 5 is a partial cross-sectional front view showing an example of a case main body composed of two members.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Case main body 2 ... Upper case as one member 4 ... Substrate as another member 20 ... Engaging piece 21 ... Holding part 22 ... Hook part 40 ... Locking part 41 ... Elastic piece 42 ... Engaging part 43 ... Gap 4c, 3a ... Engaging guide part

Claims (3)

[Scope of utility model registration request] 1. An engaging piece having a holding portion for holding a part of the other member is provided at a connecting portion of one member, and a locking portion held by the holding portion is provided at the other member. An elastic piece is provided at a distance from the engaging portion in the direction in which the engaging portion and the holding portion are engaged with each other, and when the two members are coupled, the elastic piece is pushed by the engaging piece to elastically deform. When the holding portion holds the locking portion, the elastic piece is elastically returned to prevent the engagement piece from coming off the locking portion. 2. The connecting structure for members according to claim 1, wherein a hook portion is provided at an end portion of the engaging piece, and an engaging portion which engages with the hook portion is provided at the other member. 3. The member connecting structure according to claim 1, wherein the other member is provided with an engaging guide portion of the engaging piece.