JPS5835123Y2 - Engagement structure such as compact - Google Patents

Description

[Detailed explanation of the idea] This proposal relates to an engagement structure such as a compact.

Conventionally, compacts have a flat body molded from synthetic resin and a lid that are butted against each other and hinged together at the rear end, and the front end surface has a short engagement piece on one side and an engagement ridge on the other side. and are engaged with each other to close.

Slight elastic deformation throughout the body and lid is used for the above engagement, and when the body and lid are overcome, the body and lid as a whole undergo elastic deformation and return to their original state after overcoming the engagement. There is no natural gap, and a certain amount of force is required to bring the pieces together, resulting in a snapping sound.

However, in order to obtain sufficient fixation by utilizing the overall elasticity of the body and lid, high dimensional accuracy is required for the body and lid as a whole, and even the slightest deviation is not allowed.

By the way, synthetic resin molded products shrink slightly immediately after molding, but in conventional compacts, the state of shrinkage differs due to the difference in shape and molding conditions between the body and the lid, and sometimes there is a small amount of shrinkage that cannot be seen with the naked eye. Due to the accompanying deformation, it is difficult to achieve the above-mentioned high dimensional accuracy and sufficient engagement both in design and manufacturing, and the yield is also poor.

The present invention seeks to eliminate such conventional drawbacks.

The illustrated embodiment will be described below.

Figures 1 and 2 are examples of this. In Figure 1, 1 is the body of the compact, 2 is the opening lid, 3 is the hinge that is hinged to each other at the rear end of the body and the lid, and 4 is the body of the compact. The inner plate, 5 is a mirror attached to the inner surface of the lid, and 6 is an engaging part constructed at the front of the body and lid, and apart from this retaining part, it is not much different from a conventional compact.

The above-mentioned retaining part 6 has a relatively wide abutting part of the body 1 and the front end of the lid 2, and a recess 6 that is sufficiently recessed on the lid 2 side.
1, and an engaging element 62 is disposed in the recess 61.

As shown in FIG. 2A, the engaging member 62 is formed by appropriately molding a synthetic resin, and has an engaging rod 62 b integrally projecting from a small plate-shaped base 62 a, and an engaging portion at the tip of the engaging rod. Set up 62C,
In addition, the engagement rod 62b has a linear split 62d from its tip.

The engagement member 62C is formed into a glans-like shape consisting of a taper that gradually becomes larger in diameter from the tip and a continuation of the reverse taper.

The split 62d may be inserted from the base 62a side as shown in FIG. 2B, or may be inserted in a cross shape from the tip as shown in FIG. 2C.

Note that the retainer may be integrated with the lid.

The engaging element 62 is supported at the base 62a by a support 63 that fits into the recess 61, and the support 63 has a recess 63a that fits and supports the base 62a.
The base 62a is supported in the recess 63a, and the engagement rod 62b is inserted loosely through the through-hole 63b.

The support body 63 has a ring shape as a whole, and the mirror 5 is attached to the support body 63, which also serves as the edge, and whose surface is flush with the abutting surface (inner surface) of the lid. 62b is further sufficiently protruded.

Further, in the body 1, a sufficiently depressed recess 64 corresponding to the retainer 62 is formed, and an engaging body 65 is fitted into the recess 64.

The retainer 65 allows the engaging member 62 to be inserted and engaged in a detachable manner.

The engaging body 65 is formed in the shape of an end hole having an engaging hole 65 a smaller in diameter than the large diameter portion of the engaging member 62 C and a wide interior, and the surface thereof is the abutting surface (inner surface) of the body. They are on the same page.

With the structure described above, the retainer 62 itself has elasticity due to the split 62 d in the engaging rod 62 b, so that the retainer 62 and the engaging body 65 are secured,
There is no need to use the elasticity of the body 1 or the lid 2 at all.

Furthermore, the elasticity of the engaging member 62 allows the body 1 and the lid 2 to undergo different contractions and slight deformations immediately after molding.

Figures 3 to 5 show another embodiment, in which a flat and circular body 1 and a lid 2 are butted against each other, and the lid is closed in a suitably synthetic resin compact in which a hinge 3 is connected to each other at the rear end. The front end abutting surface 11 of the body 1 serves as the retaining part 6 at the time.
is provided with an elongated hole 12 in the form of an end hole that is long in the body center direction, that is, in the radial direction, and has a narrow opening and a wide interior. A retainer 22 for insertion and engagement is integrally provided in the elongated hole 12 in a protruding manner.

The engaging element 22 has a depth shorter than the length of the elongated hole 12, is set to fit into the center of the elongated hole 12, and is attached to both sides of the head a.
.

When the lid 2 is closed from the open state shown in FIG. 3, the head of the retainer 22 is guided by the taper into the narrow opening of the elongated hole 12, and the taper of the engager 22 and the elongated hole are guided by the taper. 12, a horizontal force is applied to the head of the engager, and the retainer 22 is elastically compressed due to the elasticity of the material, and the elongated hole 1
It is inserted into 2.

By this insertion, the head of the engaging element 22, which had been elastically compressed, reaches a wide space within the elongated hole 12, so that it is elastically restored, and sufficient engagement between the engaging element 22 and the elongated hole 12 can be obtained. , thereby preventing the natural gap of the lid 2.

In addition, when the lid is opened, the head of the engager 22 is guided to the mouth of the elongated hole 12 by the reverse taper, and at this time, the retainer 22 is elastically compressed and detached from the elongated hole 12 in the same manner as described above. It will be done.

In addition, the engaging element 22 and the elongated hole 12 may be attached separately from the body cover, or may be provided with a slot in the engaging element.

In the figure, 5 is a mirror, and this mirror is attached to the lid.

3 to 5, the elasticity for engagement is determined by the partial elasticity of the material of the engager 22, and the elongated hole 12 is long in the direction of the center of the body 1. Since the retainer 22 is shorter in depth than the elongated hole 12 and fits into the center of the elongated hole,
Even if the body 1 and the lid 2 undergo different shrinkage and slight deformation immediately after molding, this is tolerated and they will not become incompatible.

According to the present invention, since the engager itself has elasticity, large dimensional tolerances of the body 1 and the lid 2 are allowed, and high dimensional accuracy is not required.

Therefore, design and manufacturing are greatly facilitated, and yield is improved.

In addition, the head of the retainer is formed into a glans-like shape with a taper that gradually increases in diameter from the tip and a reverse taper that follows, and the engagement hole is formed in an octopus case with a narrow mouth and a wide interior. When inserting and removing the retainer, the large-diameter head can be guided into and removed from the narrow opening of the retaining hole by a taper and a reverse taper, and the guide engages with both tapers. Due to the contact with the opening of the hole, a horizontal force can be applied to the head of the retainer during insertion and removal, and elasticity can be generated so that the head has a small diameter. The engaging element can be inserted into and removed from the engaging hole by simply rotating the engaging element in the vertical direction, making it easy to open and close the lid, making it convenient for use. , the engagement element and the engagement hole can be sufficiently engaged by the large diameter part of the engagement element and the narrow mouth of the retention hole, and therefore, the engagement causes the engagement element to actively undergo elastic deformation. Since it will not be removed unless the lid 2 is removed, there is no fear that the lid 2 will come off unexpectedly due to external force when being carried.

[Brief explanation of the drawing]

The drawings are examples of the present invention, and Figure 1 is a vertical side view of an example, and Figure 2 is a longitudinal side view of an example.
Figures A, B, and C are enlarged perspective views of various modifications of the respective main parts, Figure 3 is a perspective view of another example in the open state, and Figure 4 is the main part shown on the line IVIV in Figure 3 in the closed state. Enlarged cross-sectional view,
FIG. 5 is a sectional view of the main part taken along line 3--V in FIG. 3 in a closed state. 1... Body, 2... Lid, 3...
Hinge, 4...Middle plate, 5...Mirror, 6.
...Engaging portion, 62...Engager, 65...
...Engagement body, 62 a ... Base, 65 a
...Engagement hole, 62 b...Engagement rod, 6
2 C...Engagement part, 12...Elongated hole, 2
2... Engagement.

Claims (1)

[Scope of utility model registration request] In a compact, etc., in which the body 1 and the lid 2 are butted together and connected to each other by a hinge 3 at the rear end, one of the front abutting parts of the body 1 and the lid 2 has a taper that gradually becomes larger in diameter from the tip. An elastic retainer having a glans-shaped head consisting of an inverse taper continuing from the upper end is protrudingly provided, and a retaining hole in the shape of an end hole with a narrow opening and a wide interior is provided on the other side in correspondence with the elastic retainer. A retaining structure for a compact or the like, characterized in that the elastic engager is detachably inserted into and engaged with the retaining hole.