JP2549027Y2 - Lock structure for assembled parts - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock structure of an assembly part comprising a main body for accommodating electric parts such as relays and fuses and a cover.

[0002]

2. Description of the Related Art Conventionally, as a lock structure of this kind of assembled parts, for example, Japanese Utility Model Application Laid-Open No. 63-13 shown in FIGS.
There is one such as disclosed in U.S. Pat. That is, the engaging projection 10 is provided on the wall body 4 of one of the parts to be assembled, and the engaging frame 8 having the hole 9 into which the engaging projection 10 fits and the inner surface of the wall body 4 on the other part. In a lock structure in which a stopper 13 is provided and the engaging projection 10 engages with the hole 9 when both parts are assembled, and the stopper 13 restrains the engaging projection 10 in an engaged state, An engaging body 14 abutting on an end of the projection 13 is provided on the inner surface of the wall 4 so that the stopper 13 and the engaging body 14 prevent relative displacement between the two parts.

[0003]

By the way, in such a lock structure, when one component is engaged with the other component, the center of the projection 10 of one component is fixed to the engagement frame 8 of the other component. The center of the hole 9 is aligned, and the engaging frame 8 of the other component is brought into contact with the projection 10 of the other component.
4, the stopper 13 cannot be engaged, and the projection 10 cannot be engaged with the hole 9 of the engagement frame 8, so that the positioning of both is not easy.

Further, in order to separate the assembled and engaged parts, the side plate 7 of the other part must be grasped and separated from one part. In this case, the engagement frame 8 together with the side plate 7 is required. Are bent inward, and the state of engagement with the projections 10 is further strengthened. For this reason, the engaging frame 8 must be extended outward one by one and disengaged from the projection 10, and at the same time, the other component must be separated from one component, and the operation is troublesome.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has a lock structure of an assembled part which can easily assemble and separate an assembled part comprising a main body for accommodating electric parts such as relays and fuses and a cover. The purpose is to provide.

[0006]

In order to achieve the above object, according to the present invention, there is provided a lock structure of an assembly part comprising a body and a cover for accommodating electric parts such as relays and fuses, Locking projection on one side plate of the assembled part
Elongate to provide this locking projection to the engagement position while providing
Extending from the end surface of the one side plate,
The other side plate of the assembled part engages with the locking projection.
A stopper is provided, and the guide projection is fitted into the
The force applied to the guide projections when the
A receiving hole is provided in the other side plate of the assembled component,
The handle for holding the assembly part when the assembly part is removed
It is characterized in that it is provided near one of the guide projections on one side plate of the attached part .

[0007]

According to the above configuration, when assembling the assembled parts,
When one assembling part is brought closer to the other assembling part, the guide projection serves as a guide for guiding to the locking position, and the guide projection first fits into the insertion hole, and then the other assembling part engages. The locking projection of one of the assembled parts can be engaged with the stop.

On the other hand, when separating the assembled parts, the user grips the handle and one (or the other) of the assembled parts provided with the handle, and separates one of the assembled parts from the other. For example, since the side plate of one (or the other) of the assembled parts provided with the handle part and the handle part provided with the guide protrusions hardly bends inwardly, the engagement between the locking protrusions and the locking parts is prevented. Can be easily released. Further, by forming the guide projection in a long shape, the guide projection can be easily positioned in the insertion hole.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment in which the lock structure of assembled parts according to the present invention is applied to a fuse box, and shows a state in which a fuse 28 is removed from the fuse box.

Referring to FIG. 1, a fuse box as an assembly part according to the present invention includes a main body 21 and a cover 31.

The main body 21 has a hollow rectangular parallelepiped shape surrounded by four side plates, and one side plate surface of the side plate 23 is provided with a partition plate projecting inward from the side plate surface. Two insertion holes 24 extending in the central axis direction (that is, the vertical direction in FIG. 1) are provided at a distance from each other.
4, two locking claws 25 are provided on the outside thereof in the direction of the center axis of the main body 21, and project from the distal end of the side plate 23 by a predetermined length. Is body 2
1 is provided with an engaged projection 25a protruding outward.

The other side plate facing the one side plate also has two insertion holes 24 and engagement projections 25 of the one side plate.
a, two locking claws 2 each having two insertion holes 26 and engaged projections 27a symmetrically to the two locking claws 25 having
7 is provided.

The engaged projection 2 provided on one side plate surface
The two locking claws 25 having 5a and the two locking claws 27 having the engaged projections 27a provided on the other side plate surface form locking portions, respectively.

The cover 31 has four side plates 33 erected around the periphery of a rectangular upper plate 32 so as to surround the periphery.
When the cover 31 is placed on the main body 21, the front end of the side plate 33 of the cover 31 overlaps the front end of the side plate 23 of the main body 21.

Each of the two side plates 33 of the cover 31 is inserted into each of the two through holes 24 and 26 provided in the two opposite side plates 23 of the main body 21 so as to be fitted therein.
3, two long guide projections 34, 35 protruding from the front end of the main body 3, and the front end portions of two locking claws 25, 27 provided on two opposite side plates 23 of the main body 21. The two inner surfaces facing each other of the side plate 33 are provided on the outer surfaces thereof so as to sandwich the respective two guide protrusions 34 and 35 so as to be able to engage with the respective two engaged protrusions 25a and 27a provided on the side plate 33. And two inwardly projecting locking projections 36, 37
Is provided.

Incidentally, each engaged projection 25a, 2
The guide projections 34, 35 protrude from the distal end of the cover 31 so that the guide projections 34, 35 can fit into the insertion holes 24, 26 before the locking projections 36, 37 of the cover 31 engage with each other. The length thus set is longer than the length of the locking claws 25, 27 protruding from the tip of the main body 21.

A handle portion 39 is provided on the outer surface of the side plate 33 of the cover 31 between at least one of the two guide projections 34 and 35 facing each other, and between the locking projection 36 and the handle portion 39. The guide projection 34 is located.

Further, two slits 38 are provided at both ends in the horizontal direction of the handle portion 39 in the vertical direction from the vicinity of the upper plate 32 to the tip of the side plate 33.

According to such a configuration, the tips of the four guide projections 34 and 35 of the cover 31 are fitted into the four insertion holes 24 and 26 of the main body 21 as shown in FIG. Until the end of the side plate 33 comes into contact with the end of the side plate 23 of the main body 21, the guide projections 34 and 35 are inserted into the insertion holes 2.
The cover 31 can be assembled to the main body 21 by pushing the cover 31 into the main body 21 (FIGS. 2 and 3). The guide projections 34,
After the front end of the cover 35 is inserted into the insertion holes 24 and 26, the cover 3
The locking projections 36 and 37 of the cover 31 and the locking portions 25a and 27a of the main body 21 are engaged before the front end of the side plate 33 and the front end of the side plate 23 of the main body 21 contact each other. For this reason,
The guide projections 34 and 35 function as guides for guiding the engagement position of the main body 23, and the locking projections 36 and 37 of the cover 31.
Easily engages with the locking portions 25a, 27a of the main body 21.
It can be done reliably.

When an external force acts obliquely on the side plate 33 of the cover 31 in a state where the cover 31 is assembled to the main body 21, the guide projections 34, 35
The displacement of the cover 31 due to the component force in the direction perpendicular to the direction in which the cover 31 enters or leaves the guide projections 34, 35.
On the other hand, the cover 31 due to the component force in the direction in which the guide projections 34, 35 are separated from the insertion holes 24, 26.
The gap between the locking portions 25a and 27a of the main body 21 and the cover 3
Since it is blocked by the engagement of the locking projections 36 and 37,
The cover 31 does not come off the main body 21.

Next, in order to remove the cover 31 from the main body 21, the cover 31 and its handle 39 are gripped with one hand, and the cover 31 is separated from the main body 21. At this time,
The handle 39 bends inward of the cover 31, but the locking projections 25, 27 outside the guide projections 34, 35 are provided with the two guide projections 34, 35 of each side plate 33 serving as a reinforcing material. The side plate 23 hardly deforms. For this reason, the locking portions 25a, 2
The engagement of the locking projections 36 and 37 of the cover 31 with the cover 7 a can be easily released, and the cover 31 can be removed from the main body 21.

In addition, two near the both ends in the horizontal direction of the handle 39
Since the slits 38 are provided, the cover 31 is held by one hand.
When the cover 31 is separated from the main body 21 by grasping the handle 39 and the handle 39, the handle 39 between the two slits 38
1 and the deflection of the side wall 33 of the cover 31 is reduced, so that the engagement can be released more easily.

In this embodiment, two guide projections 34 and 35 spaced apart from two opposite side plates 33 of the cover 31 and two locking projections 3 are provided on the outside thereof.
6 and 37, and the handle 39 is provided between the two guide projections 34 on one of the side plates 33. However, the present invention is not limited to this. The other side plate 33 is provided with a guide protrusion 35 and a lock protrusion 37 symmetrically with each other, and the guide protrusion 34 is formed between the lock protrusion 36 and the handle 39. The handle 39 may be provided so as to be sandwiched therebetween. Alternatively, the guide projections 34, 35 may be provided on condition that the handle 39 is provided near the guide projections 34, 35.
The locking projections 36 and 37 and the handle 39 may be arranged in any manner.

As described above, when the cover 31 is separated from the main body 21 in the same manner as in the above embodiment, the guide projections 34 and 35 serve as reinforcing materials, and the bending of the side plate 33 of the cover is reduced. The engagement between the locking portions 25a, 27a of the main body 21 and the locking projections 36, 37 of the cover 31 can be easily released, and the cover 31 can be easily removed from the main body 21.

The locking portions 25a, 27a of the main body 21
Can be projected inward of the main body 21 and locking projections 36 and 37 of the cover 31 can be provided so as to be able to engage with this.

Further, locking claws 25 and 27 having insertion holes 24 and 26 and locking projections 25a and 27a provided on the cover 31 are provided on the cover 31.
1 and guide projections 34 and 35 and locking projections 3
6, 37 can also be provided.

[0028]

As described above, according to the present invention, when the user grips the handle and one of the assembled parts provided with the handle and separates one of the assembled parts from the other, the guide is used. The projections serve as reinforcements to prevent the inward bending of the side plate of one of the assembled parts, so that the engagement between the locking projection and the locking portion can be easily released, and the cover can be easily removed from the main body. Can be removed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a lock structure of an assembled part according to the present invention, showing a state in which a cover is removed from a main body.

FIG. 2 is a cross-sectional view of the assembled component of FIG. 1 showing a state in which a guide projection and an insertion hole are engaged.

3 is a cross-sectional view of the assembled component of FIG. 1 showing a state in which a locking projection of a cover and a locking portion of a main body are engaged.

FIG. 4 is a perspective view showing a lock structure of a conventional assembled part.

FIG. 5 is a cross-sectional view of FIG. 4 showing a cross-section of the assembled component at an engagement portion between a locking projection and a hole.

[Explanation of symbols]

 Reference Signs List 21 Main body of assembled part 24, 26 Insertion hole 25a, 27a Locking part 31 Cover of assembled part 34, 35 Guide protrusion 36, 37 Locking protrusion 39 Handle part

Claims (1)

(57) [Scope of request for utility model registration] 1. A locking structure for an assembled part comprising a main body for accommodating electrical parts such as a relay and a fuse, and a cover, wherein a locking projection is provided on one side plate of the assembled part.
A long guide for guiding the locking projection to the engagement position.
Extending from the end surface of the one side plate, and
The other side plate of the product has a locking portion for engaging with the locking projection.
When the guide projections are fitted and the
Insertion that receives the inward force of the assembled part that is added to the guide projection
An opening is provided in the other side plate of the assembly part;
The handle for holding the assembled part when the
A lock structure for an assembled part, wherein the lock structure is provided near one of the guide protrusions on one side plate .