JP2590063Y2 - Wiring board cover structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring board cover structure for protecting a wiring board.

[0002]

2. Description of the Related Art As a cover structure for a wiring board of this type, a structure shown in FIG. 6 is conventionally known. That is, a hard cover (concave portion) in which an iron plate or the like is bent in a U-shape (concave shape)
1, the wiring board 2 is fixed, and the wiring board 2 is protected by a soft cover (cover) 3 provided at the entrance of the hard cover 1. At the entrance of the hard cover 1, a locking hole 1a is provided at a position facing the entrance.

The soft cover 3 is made of an insulating material such as plastic and is formed in a flat plate shape. At both ends thereof, locking projections 3a are formed to enter and lock the locking holes 1a. ing.

In the wiring board cover structure configured as described above, the locking projection 3a is inserted into the locking hole 1a so as to bend the entire soft cover 3. When the soft cover 3 returns to the flat plate shape, the locking projection 3a is
a, the soft cover 3 is fixed to the hard cover 1.

[0005]

However, in the above-described conventional wiring board cover structure, the locking projection 3a is simply inserted into the locking hole 1a.
There is a problem that the soft cover 3 easily comes off when rattling occurs and an external force is applied. FIG.
As shown in FIG. 2, there is a structure in which the soft cover 3 is fixed to the hard cover 1 with the screw 4, but in this structure, the number of parts increases and the number of assembly steps increases.
Further, there is a problem that work efficiency is reduced because work using tools is required.

The present invention has been made to solve the above-mentioned problem, and its purpose is to eliminate the play of the soft cover against the concave portion and to make the soft cover hard to come off. Moreover, it is an object of the present invention to provide a wiring board cover structure capable of improving the efficiency of assembly work.

[0007]

According to a first aspect of the present invention, a wiring board is provided in a recess, and a plate-shaped soft cover is provided at an entrance of the recess. A wiring board cover structure that protects the
At the entrance of the recess, a locking hole is provided at a position facing the locking hole, and at the both ends of the soft cover, locking projections are provided to lock into the locking holes. The soft cover is formed so as to be curved in such a manner as to draw an arc between both ends thereof, and the curved side is attached toward the inside of the concave portion, and at least a part thereof is brought into contact with the wiring board. It is characterized by having.

According to a second aspect of the present invention, there is provided a wiring board cover structure in which a wiring board is provided in a recess, and a plate-shaped soft cover is provided at an entrance of the recess to protect the wiring board. In addition, a locking hole is provided at a position facing the recess at the entrance of the recess, and a locking projection is provided at both ends of the soft cover to enter and lock the locking holes. The soft cover has a protrusion at least at a part between both ends thereof, and the protrusion is brought into contact with the wiring board.

[0009]

According to the present invention, the locking projection is inserted into the locking hole with the curved side of the soft cover facing the recess. At this time, if the projection is bent in a direction opposite to the direction in which the projection is originally bent, the locking projection can be easily inserted into the locking hole. After that, it returns to the original curved shape, and at least a part thereof comes into contact with the wiring board. Then, the reaction force due to the contact acts on the soft cover, and the locking projection is pressed against the edge of the locking hole. For this reason, the soft cover does not rattle with respect to the concave portion, and is hard to come off even when an external force is applied. In addition, the number of parts does not increase, the assembling work is extremely simple, and the working efficiency can be improved. Further, since the entire soft cover is curved and fits in the concave portion, an external force hardly acts on the soft cover, and the detachment of the soft cover can be almost completely prevented.

In the invention according to claim 2, the projection comes into contact with the wiring board, and the reaction force at that time causes the locking projection to be pressed against the edge of the locking hole. Therefore, also in this case, the soft cover does not rattle with respect to the concave portion, and is hard to come off even when an external force is applied. In addition, the number of parts does not increase, the assembling work is extremely simple, and the working efficiency can be improved.

[0011]

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

First, a first embodiment of the present invention will be described with reference to FIGS. However, the same elements as those of the conventional example shown in FIGS. 6 and 7 are denoted by the same reference numerals, and description thereof will be simplified.

As shown in FIGS. 1 and 2, the wiring board 2
It is fixed via a fixing member 11 in a hard cover (recess) 1 formed in a U-shape. In particular, the electronic devices 12 and the like on the wiring board 2 are directed toward the inside of the hard cover 1, and the protection of the electronic devices 12 and the like is completely achieved. The rear side of the wiring board 2 faces the entrance side of the hard case 1, and this portion is insulated and protected by the soft cover 3.

The soft cover 3 is obtained by thermally deforming a heat-resistant insulating PVC sheet in a U-shape, that is, in an arc shape. In this curved state, a linear direction between both ends having the locking projections 3a is provided. Is shorter than the distance between the opposing locking holes 1a. That is, the soft cover 3
By extending it more straightly, the locking projection 3a can be inserted into the locking hole 1a. As shown in FIG. 3, the soft cover 3 formed in this manner is attached so as to be in contact with the back surface of the wiring board 2 so as to be extended more straightly. The locking projections 3a are pressed against the edges of the locking holes 1a by the force Fa due to the reaction forces Fp and Fp 'received from the locking member 3a.

However, the soft cover 3 is replaced with the hard cover 1
In this state, the dimension between both ends of the soft cover 3 excluding the locking projection 3a is shorter than the dimension between the opposing locking holes 1a. Therefore, each locking projection 3 is bent in the direction opposite to the direction originally bent.
Even if a is inserted into each locking hole 1a, it immediately returns to the original curved shape.

In the wiring board cover structure configured as described above, when the soft cover 3 contacts the wiring board 2, reaction forces Fp and Fp 'are generated, and the reaction forces Fp and Fp' are generated.
Due to p ', the locking projection 3a is forced to be pressed against the edge of the locking hole 1a by the force Fa. For this reason,
The soft cover 3 does not rattle with respect to the hard cover 1, and is hard to come off even when an external force is applied. Moreover, the number of parts does not increase, the assembling work can be performed extremely easily, and the working efficiency can be improved. Furthermore, since the entire soft cover 3 is accommodated in the hard cover 1, external force hardly acts on the soft cover 3, and the soft cover 3
Can be almost completely prevented. Further, as described above, by bending the soft cover 3 to the side opposite to the side originally curved, the locking projection 3a is formed.
Can be easily inserted into the locking hole 1a.

Next, a second embodiment of the present invention will be described with reference to FIGS. 4 and 5. FIG. However, components common to those of the first embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and description thereof will be simplified. The difference between the second embodiment and the first embodiment is that the soft cover 3 is formed in a flat shape and the projection 3b is provided at the center thereof.

That is, as shown in FIG. 4, the soft cover 3 is formed in a planar shape, and has a projection 3b at the center. The protruding portion 3 b is formed by bending the soft cover 3. When the soft cover 3 is attached to the hard cover 1, the protrusion 3 b comes into contact with the rear surface of the wiring board 2.

In the structure of the wiring board cover thus configured, the rear plate 2 receives the reaction force Fp from the rear plate 2 via the projection 3b.
The locking projection 3a is moved by the reaction force Fp.
a is forcibly pressed against the edge portion of a by the force Fa. For this reason, the soft cover 3 does not rattle with respect to the hard cover 1 and becomes hard to come off even when an external force is applied. In addition, the number of components does not increase, and the assembling work can be performed extremely easily.

It is to be noted that the one in which the projection 3b is formed to be curved over the entire soft cover 3 can be said to be the soft cover 3 of the first embodiment.

In each of the above embodiments, the soft cover 3 is made of a heat-resistant insulating PVC sheet. However, the soft cover 3 may be made of an elastically deformable material and having an insulating property. Needless to say, it may be formed of another material.

[0022]

According to the first aspect of the present invention, the locking projection is inserted into the locking hole with the curved side of the soft cover facing the recess. At this time, if the projection is bent in a direction opposite to the direction in which the projection is originally bent, the locking projection can be easily inserted into the locking hole. And
After that, it returns to the original curved shape, at least a part of which comes into contact with the wiring board. Then, the reaction force due to the contact acts on the soft cover, and the locking projection is pressed against the edge of the locking hole. For this reason, the soft cover does not rattle with respect to the concave portion, and is hard to come off even when an external force is applied. In addition, the number of parts does not increase, the assembling work is extremely simple, and the working efficiency can be improved. Further, since the entire soft cover is curved and fits in the concave portion, an external force hardly acts on the soft cover, and the detachment of the soft cover can be almost completely prevented.

In the invention according to claim 2, the projection comes into contact with the wiring board, and the reaction force at that time causes the locking projection to be pressed against the edge of the locking hole. Therefore, also in this case, the soft cover does not rattle with respect to the concave portion, and is hard to come off even when an external force is applied. In addition, the number of parts does not increase, the assembling work is extremely simple, and the working efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of a wiring board cover structure shown as a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a cover structure of the wiring board.

FIG. 3 is a sectional view of a main part of a cover structure of the wiring board.

FIG. 4 is an exploded perspective view of a wiring board cover structure shown as a second embodiment of the present invention.

FIG. 5 is a sectional view of a principal part of a cover structure of the wiring board.

FIG. 6 is an exploded perspective view of a wiring board cover structure shown as a conventional example.

FIG. 7 is an exploded perspective view of a wiring board cover structure shown as another example of the conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concave part (hard cover) 1a Locking hole 2 Wiring board 3 Soft cover 3a Locking projection

Claims (2)

(57) [Scope of request for utility model registration] 1. A wiring board cover structure in which a wiring board is provided in a recess, and a plate-shaped soft cover is provided at an entrance of the recess to protect the wiring board. The locking cover is provided at a position facing the locking cover, and the soft cover is provided with locking projections at both ends thereof for locking into the locking holes. A curved portion is formed so as to draw an arc between both ends, and the curved side is attached to the inside of the concave portion, and at least a part of the curved portion is brought into contact with the wiring board. The wiring board cover structure. 2. A wiring board cover structure in which a wiring board is provided in a recess and a plate-shaped soft cover is provided at an entrance of the recess to protect the wiring board. The locking cover is provided at a position facing the locking cover, and the soft cover is provided with locking projections at both ends thereof for locking into the locking holes. A cover structure for a wiring board, comprising a projection at least at a part between both end portions, wherein the projection is brought into contact with the wiring board.