Electric appliance box suitable for mounting PCB (Printed Circuit Board)

Abstract

The utility model relates to the field of electrical boxes, and discloses an electrical box suitable for mounting a PCB, which comprises a box body, a cover body is arranged at the top of the box body, screws are in threaded connection with four corners of the cover body, a PCB is arranged in the box body, mounting parts are arranged at four corners of the PCB, hollow columns are fixedly connected with four corners in the box body, and the hollow columns are fixedly connected with the cover body. And fixing grooves are formed in the left portion and the right portion of the front side and the rear side of the bottom of the inner wall of the box body correspondingly, and the mounting piece comprises a shell. According to the utility model, through the mutual cooperation of the housing, the clamping petal, the control member, the circular plate and the spring, the mounting member does not need to be firstly dismounted and mounted when the PCB is dismounted and mounted by the electrical box load, so that the mounting member is not easy to lose, and through the mutual cooperation of the housing, the mounting member, the PCB and the bayonet, the volume of the mounting structure is smaller, and the mounting structure is more convenient to mount and dismount. A large space in the box body is not occupied, and the practicability is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric appliance box, especially applicable to the electric appliance box of installing PCB. BACKGROUND

[0002] The full name of PCB is printed circuit board. It is the basic structure for supporting and connecting various electronic components in electronic equipment, and is usually made of insulating material with conductive patterns printed on it, which form the connection path of the circuit. The electric box is a device used to protect and accommodate electrical components, commonly used in household and industrial power distribution systems.

[0003] After searching, the patent publication number CN216852839U discloses a PCB mounting and fixing structure. When the PCB needs to be installed, place the PCB on the installation slot of the first mounting block, the second mounting block and the third mounting block, then turn the limiting cover hinged to the top of the third mounting block to the top of the first mounting block, the second mounting block and the third mounting block to limit the PCB with the installation slot. At this time, the limiting vertical rod is detachably connected with the buckle seat through the detachable buckle; when the PCB needs to be removed, the limiting vertical rod can be separated from the buckle seat, then the limiting cover is taken out to take out the PCB; the utility model is simple and practical, does not need to use screws, and greatly improves the efficiency of installing and dismounting the PCB.

[0004] Although the above-mentioned device does not need to use bolts for the installation of the PCB, the installation structure is large in size, and since it needs to provide space for adjusting the connection between the buckle and the buckle seat and opening the limiting cover, the structure will occupy a large space in the box body, which is not practical. Therefore, an electric appliance box suitable for installing PCB is proposed to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides an electric appliance box suitable for installing PCB, aiming at improving the problem of large installation structure occupying large space in the shell in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an electric appliance box suitable for installing PCB, comprising a box body, a cover body provided at the top of the box body, screws threadedly connected at the four corners of the cover body, a PCB provided inside the box body, mounting pieces provided at the four corners of the PCB, hollow columns fixedly connected at the four corners inside the box body, and screws threadedly connected therewith.

[0007] As a further description of the above-mentioned technical scheme:

[0008] The inner wall bottom of the box body is provided with a fixing groove on the front and rear sides and the left and right parts.

[0009] As a further description of the above technical solution:

[0010] The mounting member comprises a shell, a plurality of clamping petals are fixedly connected to the top of the shell, a control member is arranged on the upper portion of the shell, a gasket is fixedly connected to the outer wall of the lower portion of the shell, a threaded stud is fixedly connected to the bottom of the shell, and the threaded stud is threadedly connected with the fixing groove.

[0011] As a further description of the above technical solution:

[0012] A circular plate is slidably connected to the middle portion of the shell, and the circular plate and the shell are jointly fixedly connected with a spring.

[0013] As a further description of the above technical solution:

[0014] Control grooves are arranged on the front and rear portions of the shell.

[0015] As a further description of the above technical solution:

[0016] The control member comprises a top plate, a circular rod is fixedly connected to the bottom of the top plate, and clamping rods are fixedly connected to the lower portion of the circular rod on the front and rear sides.

[0017] As a further description of the above technical solution:

[0018] A plurality of clamping petals are jointly fixedly connected with a connecting ring, and the connecting ring is rotatably connected with the top plate.

[0019] As a further description of the above technical solution:

[0020] Bayonets are arranged on the four corners of the PCB.

[0021] The utility model has the advantages of the following beneficial effects:

[0022] 1. In the utility model, the mutual cooperation between the shell, the clamping petals, the control member, the circular plate and the spring enables the electrical box to be disassembled and assembled to the PCB without the need to disassemble and assemble the mounting member, so that the mounting member is not easy to be lost, the mutual cooperation between the shell, the mounting member, the PCB and the bayonet enables the mounting structure to have a smaller size and not to occupy a large space in the box, and the practicality is effectively improved.

[0023] 2. In the utility model, the mutual cooperation between the gasket, the shell and the clamping petals enables the mounting member to be fixed to the PCB without damaging the PCB, and the mutual cooperation between the threaded stud and the fixing groove enables the mounting member to be installed and replaced more conveniently and practically. DRAWINGS

[0024] Figure 1 The utility model provides an overall three -dimensional structure schematic drawing of an electric appliance box suitable for installing PCB;

[0025] Figure 2 The utility model provides a shell and cover split three -dimensional structure schematic drawing of an electric appliance box suitable for installing PCB;

[0026] Figure 3 The utility model provides a box body and PCB board and mounting spare split three -dimensional structure schematic drawing of an electric appliance box suitable for installing PCB;

[0027] Figure 4 The utility model provides an mounting spare overall three -dimensional structure schematic drawing of an electric appliance box suitable for installing PCB;

[0028] Figure 5 The utility model provides an mounting spare profile three -dimensional structure schematic drawing of an electric appliance box suitable for installing PCB;

[0029] Figure 6 The utility model provides an mounting spare three -dimensional structure schematic drawing when using of an electric appliance box suitable for installing PCB.

[0030] Legend:

[0031] 1, box body;2, cover;3, screw;4, PCB board;5, mounting spare;11, empty column;12, fixed groove;51, shell;52, control spare;53, clamping piece;54, gasket;55, stud;56, spring;57, round plate;511, control groove;521, top plate;522, round rod;523, clamping rod;531, connecting ring;41, bayonet. DETAILED DESCRIPTION

[0032] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0033] Reference Figure 1 - Figure 3The utility model provides an embodiment: a kind of electric appliance box suitable for installing PCB, including box body 1, the top of box body 1 is provided with cover 2, box body 1 and cover 2 can constitute electric appliance box, the four corners of cover 2 are all threadedly connected with screw 3, for the fixing between box body 1 and cover 2, the inside of box body 1 is provided with PCB board 4, the four corners of PCB board 4 are all set with bayonet 41, its size is compatible with shell 51, the four corners of PCB board 4 are all provided with mounting 5, for the installation between PCB board 4 and electric appliance box, it does not need to be removed from box body 1 during the dismounting process of PCB board 4 in ordinary times, the inside four corners of box body 1 are all fixedly connected with empty column 11, it is used to cooperate the installation of screw 3, and screw 3 is threadedly connected therewith, the inner wall bottom of box body 1 is all set with fixed groove 12, for the fixing of mounting 5.

[0034] As shown in Figure 4 Figure 6 The mounting 5 includes shell 51, for connecting parts, and is movably connected with bayonet 41, the top of shell 51 is fixedly connected with multiple card flaps 53, which are made of rubber material, the inside middle part is thin, and the upper and lower parts are thick, so as to facilitate the outward bending and folding of the middle part of card flap 53, the upper part of shell 51 is provided with control member 52, for extruding or resetting multiple card flaps 53, the lower part of the outer wall of shell 51 is fixedly connected with gasket 54, which is made of rubber material, for protecting PCB board 4, the bottom of shell 51 is fixedly connected with stud 55, for the fixation between mounting 5 and box body 1, so as to facilitate the replacement of mounting 5 in later period, stud 55 is threadedly connected with fixed groove 12, the middle part of shell 51 is slidably connected with round plate 57, for extruding spring 56 by control member 52, spring 56 is fixedly connected between shell 51 and round plate 57, for connecting between card rod 523 and control groove 511, for resetting control member 52.

[0035] Further, the front and rear parts of shell 51 are both provided with control groove 511, which is composed of two vertical grooves with different lengths and an inclined groove, the inclined groove is communicated with the lower parts of the two vertical grooves, the shape of control groove 511 is similar to J shape, control member 52 includes top plate 521, for adjusting the position of card rod 523, the diameter is consistent with shell 51, the bottom of top plate 521 is fixedly connected with round rod 522, for connecting parts, which is located at the top of round plate 57, the lower part of round rod 522 is fixedly connected with card rod 523 on the front and rear sides, which is slidably connected with control groove 511, the top of multiple card flaps 53 is fixedly connected with connecting ring 531, for connecting between multiple card flaps 53 and control member 52, to cooperate the rotation of top plate 521, connecting ring 531 is rotatably connected with top plate 521.

[0036] ​Working principle: in use, first align the stud 55 with the fixed slot 12, and tighten the stud 55 at the lower part of the four mountings 5 with the four fixed slots 12 in the box body 1, so as to fix the mountings 5 with the box body 1, then align the bayonet 41 on the PCB board 4 with the plurality of mountings 5, and press the PCB board 4 downwards so as to make the plurality of mountings 5 respectively clamped into the plurality of bayonets 41, then press the top plate 521 downwards so as to make the clamping rod 523 move in the control slot 511 through the round rod 522, the clamping rod 523 will move downwards along the longer vertical slot, when the clamping rod 523 reaches the bottom of the vertical slot, rotate the top plate 521 along the direction of the inclined slot, so as to make the clamping rod 523 move along the inclined slot, when the clamping rod 523 moves to the other end of the inclined slot, release the force applied on the top plate 521, the spring 56 will push the round plate 57 upwards, the round plate 57 will push the control member 52 upwards, so as to make the clamping rod 523 clamped into the shorter vertical slot, and fix the position of the control member 52, when the control member 52 moves downwards, the top plate 521 will apply pressure on the plurality of clamping petals 53, so as to make the plurality of clamping petals 53 be pressed and folded outward, so as to make the plurality of clamping petals 53 clamped on the upper part of the bayonet 41, and fix the PCB board 4, when it is needed to take down the PCB board 4, press the top plate 521 again, so as to make the clamping rod 523 move to the bottom of the short vertical slot, then rotate the top plate 521 reversely, so as to make the clamping rod 523 move along the inclined slot again to the lower part of the long vertical slot, then release the pressure applied on the top plate 521, the spring 56 will reset the control member 52, so as to make the clamping petals 53 lose the pressure applied by the top plate 521, and restore, then pull the PCB board 4 upwards, so as to make the mountings 5 disengage from the bayonets 41.

[0037] Finally, it should be noted that: the above only for preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application, for the person skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.

Claims

1. An electrical box suitable for mounting a PCB comprising a box body (1), characterised in that: The top of the box body (1) is provided with a cover (2), the four corners of the cover (2) are threadedly connected with screws (3), the inside of the box body (1) is provided with a PCB board (4), the four corners of the PCB board (4) are provided with mounting pieces (5), the inside of the box body (1) is fixedly connected with hollow columns (11) at four corners, the screws (3) are threadedly connected with the hollow columns (11), the mounting piece (5) comprises an outer shell (51), the top of the outer shell (51) is fixedly connected with a plurality of clamping pieces (53), the upper portion of the outer shell (51) is provided with a control piece (52), the lower portion of the outer wall of the outer shell (51) is fixedly connected with a gasket (54), the bottom of the outer shell (51) is fixedly connected with a threaded column (55), the threaded column (55) is threadedly connected with a fixed groove (12), the middle portion of the outer shell (51) is slidably connected with a circular plate (57), the circular plate (57) and the outer shell (51) are fixedly connected with a spring (56) together, the front and rear portions of the outer shell (51) are both provided with control grooves (511), the control piece (52) comprises a top plate (521), the bottom of the top plate (521) is fixedly connected with a circular rod (522), the lower portion of the circular rod (522) is fixedly connected with clamping rods (523) on the front and rear sides, the top of the plurality of clamping pieces (53) is fixedly connected with a connecting ring (531), and the connecting ring (531) is rotatably connected with the top plate (521).

2. The appliance box for mounting a PCB according to claim 1, wherein: The inside wall of the box body (1) is provided with fixed grooves (12) on the bottom, the front and rear sides and the left and right portions.

3. The appliance box for mounting a PCB according to claim 1, wherein: The four corners of the PCB board (4) are provided with clamping openings (41).

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