JPH0533577U - Case for electrical equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To firmly and easily fix the split case to shape retention without soldering or screwing. In a case for an electric device of a type in which two cases 11 and 12 are combined and fixed, one of the two cases 11 is provided with a convex portion 21 on both sides thereof, and the other case 12 is provided with both sides thereof. The projection 22 and the hole 22 are fitted and locked together, and the at least one of the cases 11 and 12 is provided with a claw piece 23 for preventing the unlocking.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a case for electric equipment such as a case for a switching power supply.

[0002]

[Prior Art]

 As shown in FIG. 4, the conventional case for electric equipment has a case frame 3 formed on the case 1 of the two cases 1 and 2, and the outside of the case frame 3 has an opening side of the other case 2. The ends are fitted together and combined. However, if they are simply fitted, especially in the case of a tall electric device, the strength in the lateral direction F is weak as shown by the arrow, and when the opening side end of the case 2 spreads laterally, it is divided into two parts. The cases 1 and 2 may be disassembled. Therefore, when the two cases 1 and 2 are made of metal, the two cases are fixed by soldering or the two cases 1 and 2 are fixed with screws or the like so as to be integrated to maintain the shape. ..

[0003]

[Problems to be solved by the device]

 As described above, in the case of a tall electric device case, since the four corners are fixed by soldering or screwing in the conventional technology, there is a problem that a lot of man-hours are required for assembly and cost is increased. ..

The present invention has been made in view of the above circumstances, and an object of the present invention is to firmly and easily fix the two-piece case without depending on the half-mounting, screwing, or the like. The purpose is to provide a case for electric equipment that can be used.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in the present invention, a case for electric equipment of a type in which two divided cases 11 and 12 are combined and fixed is provided with convex portions 21 on both sides of one of the divided cases. A hole 22 is provided on both sides of the other case 12, and the convex portion 21 and the hole 22 are fitted and locked to each other, and at least one of both cases 11 and 12 is provided with a claw piece for preventing lock release. Is provided.

[0006]

[Action]

 In the present invention, the protrusions 21 provided on both sides of one of the two cases 11 and 12 and the holes 22 provided in the other case 12 are fitted to each other, and this fitting is performed. Since both cases 11 and 12 are locked with each other via the interposing state, the cases 11 and 12 can be easily assembled with a small number of steps, and a set screw is not required, and the number of parts is reduced. Is possible.

Further, since the cases 11 and 12 are locked by the lock disengagement preventing claws so as not to be unlocked, even in the case of a tall electric device, the outside of the cases 11 and 12 is prevented. The case in which the case fitted to is expanded laterally and the lock is released can be solved, and both cases 11 and 12 can be easily and firmly fixed and the shape can be maintained.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a first embodiment of the present invention, and FIG. 2 is a vertical sectional view of a part of an assembled state in the first embodiment.

The case 10 for electric equipment of the first embodiment shown in these figures is formed by combining two cases 11 and 12 in two.

The case 11 is formed by bending a metal plate, and is formed in a tall box shape having an opening 13 at the bottom. A printed circuit board 15 is fixed inside the case 11, an electronic component 17 is mounted on the printed circuit board 15, and a plurality of leads 19 are arranged. Further, on both sides of the case 11, there are provided inwardly projecting projections 21 and blade-shaped locking disengagement claw pieces 23 at positions close to the opening 13.

The other case 12 is made of resin, and has a plate 14 and a sleeve 16 having a slightly smaller outer shape than the plate 14. The sleeve 16 is formed to fit inside the opening 13 formed in the one case 11. Further, the plate 14 of the case 12 is provided with a lead through hole 20. On both sides of the sleeve 16 of the case 12, a guide groove 18 that fits in both ends of the printed circuit board 15, a hole 22 that fits in the convex portion 21, and a claw piece 23 for preventing the lock disengagement are provided. And a U-shaped locking groove 24 that locks.

In the first embodiment, the case 11 and the case 12 on the other side are combined and fixed in the following manner.

First, the opening 13 of one case 11 is directed toward the sleeve 16 side of the other case 12, and the locking disengagement preventing claw pieces 23 provided on both sides of the one case 11 are attached to the other case 12. When the cases 11 and 12 are aligned with the locking grooves 24 provided on both sides of the sleeve 16, and the cases 11 and 12 are combined with each other, both ends of the printed circuit board 15 fixed in the case 11 and the other case. The leads 19 arranged on the printed circuit board 15 in one case 11 pass through the lead grooves provided in the plate 14 of the other case 12 through the guide grooves 18 provided on both sides of the sleeve 16 of the other 12. The holes 20 are aligned and inserted. When the two cases 11 and 12 are further combined, the protrusions 21 provided on both sides of the one case 11 snap-fit into the holes 22 provided on both sides of the sleeve 16 of the other case 12. The case 11 and the case 12 are locked together by fitting the convex portion 21 and the hole 22 together. In addition, the two cases 11 and 12 in the combined state are provided with the lock disengagement preventing claw pieces 23 provided on both side portions of the one case 11 and both side portions of the sleeve 16 of the other case 12. The lock is pressed so as not to come off through the engagement with the locking groove 24 provided.

Therefore, in the first embodiment, as shown in the drawing, even when one of the cases 11 is formed to have a high height, the end of the case 11 on the side of the opening 13 is laterally expanded and locked. It is possible to solve the problem of the disengagement of the plug and firmly fix the two cases 11 and 12 in the assembled state to maintain the shape. Further, in this first embodiment, the mandrel such as soldering and screwing for maintaining the shape can be omitted by fixing the divided case to the assembled state, and the screwing becomes unnecessary. It is also possible to reduce the number of parts.

Next, FIG. 3 is a partial vertical cross-sectional view showing a second embodiment of the present invention. In the second embodiment, the lock projections 21 are formed on both sides of the case 11 on one side of the opening 13 side, and the lock projections 21 are partially cut and bent into an almost L-shape to prevent the lock from coming off. Claw pieces 25 are provided.

The other case 12 has locking holes 26 provided in the sleeve 16 and locking holes 26 for the claw pieces 25 in the plate 14 in addition to the locking holes 22.

In the second embodiment, the protrusions 21 provided on both side portions of the one case 11 and the holes 22 provided in the sleeve 16 of the other case 12 are fitted to each other so as to fit both cases. When the seats 11 and 12 are locked in the assembled state, the claw pieces 25 provided on both sides of the one case 11 enter into the locking holes 26 provided in the plate 14 of the other case 12, and the protrusions are formed. It is designed to be locked so that the lock due to the fitting of 21 and the hole 22 does not come off.

The other structure and operation of the second embodiment are the same as those of the first embodiment.

According to the present invention, a pair of a locking projection 21 and a hole 22, a pair of a lock disengagement preventing claw piece 23 and a locking groove 24, or a pair of a claw piece 25 and a locking hole 26 is provided as The case 11 and the other case 12 may be provided on the opposite side to the illustrated embodiment.

[0020]

[Effect of the device]

 As described above, according to the present invention, the protrusions 21 provided on both sides of one of the two cases 11 and 12 and the holes 22 provided on the other case 12 are fitted to each other. Since both cases 11 and 12 are locked by assembling through this fitting, the cases 11 and 12 have an effect that they can be easily assembled with a small number of man-hours, and a set screw is unnecessary. The effect is that the number of parts can be reduced. Further, since the cases 11 and 12 are locked by the locking disengagement claw pieces so as not to be unlocked, even if the case is a tall electric device, it is fitted to the outside of the cases 11 and 12. This eliminates the problem that the case that is open laterally expands and the lock is released, and both cases 11 and 12 can be easily and firmly fixed, and the shape can be retained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a first embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a part of an assembled state in the first embodiment.

FIG. 3 is an exploded perspective view of a part of the second embodiment of the present invention.

FIG. 4 is a vertical sectional view showing a conventional technique.

[Explanation of symbols]

 11 One of the two cases 12 The other case 13 The other case 13 The opening of one case 14 The plate of the other case 16 The sleeve of the other case 21 The convex part for locking both cases 22 The hole for locking 23 The lock removal prevention Claw piece 24 Claw piece locking groove 25 Lock disengagement prevention claw piece 26 Claw piece locking hole

Claims (1)

[Scope of utility model registration request] 1. A case for electric equipment of a type in which two cases 11 and 12 are combined and fixed, and a convex portion 21 is provided on both sides of one case 11 of the two cases, and the other case 12 is provided. Is provided with holes 22 on both sides thereof, and the projection 21 and the hole 22 are fitted and locked to each other, and at least one of the cases 11 and 12 is provided with a lock disengagement preventing claw piece. A case for electrical equipment.