Motor junction box and motor

Abstract

The invention discloses a motor junction box and a motor, the motor junction box comprises a box body, a cover body and a wiring bucket, and a labyrinth waterproof structure and a silica gel sealing ring are arranged between the cover body and the box body; the box body is composed of a main cavity and a detachable expansion cavity, and the main cavity and the expansion cavity are connected through a buckle or a bolt. And the wiring bucket is rotatably connected with the main cavity. The device has the advantages of being high in sealing performance, good in heat dissipation performance, reasonable in layout and convenient to maintain.

Description

Technical Field

[0001] The present invention relates to the technical field of motor accessories, and particularly to a motor junction box and a motor. Background Art

[0002] The motor junction box is an important part of the motor and is used to connect the power supply line and the motor winding. The existing motor junction boxes have the following problems:

[0003] 1. Insufficient sealing: The cover and the box body of the traditional junction box are only fixed by simple bolts. After long-term use, moisture and dust are likely to enter due to the aging of the sealing parts, leading to short circuits or corrosion.

[0004] 2. Poor heat dissipation performance: Some junction boxes lack an effective heat dissipation structure, resulting in too high internal temperature rise and affecting the service life of electrical components.

[0005] 3. Complicated wiring operation: The layout of the terminal block is unreasonable and the wiring space is narrow, resulting in inconvenient installation and maintenance.

[0006] 4. Low compatibility: It is difficult to adapt to different specifications of cables or multiple wiring methods (such as star / delta switching). Summary of the Invention

[0007] In view of the above problems, the present invention provides a motor junction box and a motor, which have the advantages of strong sealing, good heat dissipation, reasonable layout and convenient maintenance.

[0008] The technical solution of the present invention is as follows:

[0009] A motor junction box includes a box body, a cover and a wiring funnel. A labyrinth waterproof structure and a silica gel sealing ring are provided between the cover and the box body; the box body is composed of a main cavity and a detachable extended cavity, and the main cavity and the extended cavity are connected by a buckle or a bolt; the wiring funnel is rotatably connected to the main cavity.

[0010] In a further technical solution, heat dissipation holes are provided at the bottom of the box body, and a dust-proof metal net is covered inside the heat dissipation holes. A diversion groove is provided on the inner wall of the cover, and the diversion direction of the diversion groove corresponds to the position of the heat dissipation holes.

[0011] In a further technical solution, the cover is hinged to the box body, and a spring buckle is provided on one side of the cover. The spring buckle includes a push-button unlocking button.

[0012] In a further technical solution, a cable fixing clip is provided in the extended cavity. The cable fixing clip is made of elastic rubber, and anti-slip lines are provided on the clamping surface.

[0013] In a further technical solution, a waterproof joint is provided at the cable inlet of the box body. The waterproof joint is filled with fireproof putty, and a locking nut is provided on the outer side of the waterproof joint.

[0014] In a further technical solution, the labyrinth waterproof structure is formed by the staggered fitting of the U-shaped flanging at the edge of the cover body and the stepped flange at the top of the box body.

[0015] In a further technical solution, an auxiliary sealing strip is provided at the connection between the main cavity and the extended cavity. The auxiliary sealing strip is made of ethylene propylene diene monomer (EPDM) rubber.

[0016] In a further technical solution, both the box body and the cover body are made of flame-retardant engineering plastics or aluminum alloy, and the surfaces of the box body and the cover body are coated with an epoxy resin anti-corrosion layer.

[0017] The present invention also provides a motor equipped with the above-mentioned motor junction box.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The present invention is provided with a multi-layer sealing structure, having a better waterproof and dustproof effect;

[0020] 2. The present invention adopts a split design. When it is necessary to add cables, the bolts are removed and the extended cavity is installed. After re-sealing, it can be used, with stronger applicability;

[0021] 3. The present invention combines the heat dissipation structure with the dustproof design, which can effectively reduce the temperature rise and extend the service life. Description of the Drawings

[0022] Figure 1 is a schematic internal structure diagram of the box body according to an embodiment of the present invention;

[0023] Figure 2 is a top view of the box body according to an embodiment of the present invention.

[0024] Description of the Reference Numerals:

[0025] 10. Main cavity; 11. Heat dissipation holes; 12. Flange; 20. Extended cavity; 21. Cable fixing clip; 30. Wiring funnel. Detailed Embodiments

[0026] The following further describes the embodiments of the present invention with reference to the drawings.

[0027] Embodiment 1:

[0028] A motor junction box, as Figure 1 - Figure 2As shown, it includes a box body, a cover body and a wiring funnel 30. A labyrinth waterproof structure and a silicone rubber sealing ring are provided between the cover body and the box body. The box body is composed of a main cavity 10 and a detachable extended cavity 20, and the main cavity 10 and the extended cavity 20 are connected by a buckle or a bolt. The wiring funnel 30 is rotatably connected to the main cavity 10.

[0029] In another embodiment, as Figure 1 shown, the bottom of the box body is provided with heat dissipation holes 11, the inner side of the heat dissipation holes 11 is covered with a dust-proof metal mesh, and a diversion groove is provided on the inner wall of the cover body, and the diversion direction of the diversion groove corresponds to the position of the heat dissipation holes 11.

[0030] In another embodiment, the cover body is hinged to the box body, and a spring buckle is provided on one side of the cover body, and the spring buckle includes a push-type unlocking button.

[0031] In another embodiment, as Figure 1 shown, a cable fixing clip 21 is provided in the extended cavity 20. The cable fixing clip is made of elastic rubber, and the clamping surface is provided with anti-slip lines.

[0032] In another embodiment, a waterproof joint is provided at the cable inlet of the box body. The waterproof joint is filled with fireproof mud, and a locking nut is provided on the outer side of the waterproof joint.

[0033] In another embodiment, as Figure 2 shown, the labyrinth waterproof structure is formed by the staggered fitting of a U-shaped flange at the edge of the cover body and a stepped flange 12 at the top of the box body.

[0034] In another embodiment, an auxiliary sealing strip is provided at the connection between the main cavity 10 and the extended cavity 20. The auxiliary sealing strip is made of ethylene propylene diene monomer rubber.

[0035] In another embodiment, both the box body and the cover body are made of flame-retardant engineering plastics or aluminum alloy, and the surfaces of the box body and the cover body are coated with an epoxy resin anti-corrosion layer.

[0036] Embodiment 2:

[0037] A motor is equipped with the motor junction box described in Embodiment 1.

[0038] The above embodiments only represent the specific implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A motor junction box, characterized in that: It includes a box body, a cover body and a wiring bucket, wherein a labyrinth waterproof structure and a silicone sealing ring are provided between the cover body and the box body; the box body consists of a main cavity and a detachable extension cavity, wherein the main cavity and the extension cavity are connected by buckles or bolts; and the wiring bucket is rotatably connected to the main cavity.

2. The motor junction box according to claim 1, characterized in that: The bottom of the box body is provided with a heat dissipation hole, the inner side of the heat dissipation hole is covered with a dustproof metal mesh, and the inner wall of the cover body is provided with a guide groove, and the guide direction of the guide groove corresponds to the position of the heat dissipation hole.

3. The motor junction box according to claim 1, characterized in that: The cover body is hinged to the box body, a spring buckle is provided on one side of the cover body, and the spring buckle includes a press-type unlocking button.

4. The motor junction box according to claim 1, characterized in that: A cable fixing clamp is arranged in the expansion cavity. The cable fixing clamp is made of elastic rubber material and has anti-slip textures on its clamping surface.

5. The motor junction box according to claim 1, characterized in that: A waterproof joint is provided at the cable entrance of the box body, the waterproof joint is filled with fireproof mud, and a locking nut is provided on the outer side of the waterproof joint.

6. The motor junction box according to claim 1, characterized in that: The labyrinth waterproof structure is formed by the U-shaped folded edge of the cover body edge and the stepped flange on the top of the box body being staggered and embedded.

7. The motor junction box according to claim 1, characterized in that: An auxiliary sealing strip is provided at the connection between the main cavity and the expansion cavity, and the auxiliary sealing strip is made of EPDM rubber.

8. The motor junction box according to claim 1, characterized in that: The box body and the cover body are both made of flame-retardant engineering plastics or aluminum alloy, and the surfaces of the box body and the cover body are coated with an epoxy resin anti-corrosion layer.

9. A motor, characterized in that: A motor junction box according to any one of claims 1 to 8 is installed.

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