Junction box for explosion-proof motor with good dustproof and waterproof effects

Abstract

The junction box comprises a box body and a box cover, the bottoms of the two ends of the box cover are fixedly connected with inserting plates, the two ends of the box body are provided with inserting grooves corresponding to the inserting plates, a rotating rod is rotatably inserted in the box cover, and the rotating rod is connected with the inserting plates. A worm gear is fixedly connected to the end, located in the box cover, of the rotating rod, a worm meshed with the worm gear is arranged on one side of the worm gear, the two ends of the worm are both rotationally connected with the inner wall of the box cover, the rotating directions of threads on the two sides of the central point of the horizontal axial section of the worm are opposite, and the two ends of the worm are both sleeved with sleeve plates in a threaded mode; one side of the bottom end of the sleeve plate is fixedly connected with a positioning plate, one end of the positioning plate penetrates through the box body and extends into the slot, the motor junction box can play a good dustproof and waterproof effect, and the motor junction box can be disassembled and assembled without a tool during disassembly and assembly operation, so that the motor junction box can be quickly disassembled, assembled and maintained, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of motor-related products, in particular to a junction box for explosion-proof motors with good dustproof and waterproof effects. Background Art

[0002] The junction box is one of the auxiliary devices for the motor. The junction box is generally fixedly mounted on the motor housing. Since there are often multiple electrical components at the joints between the wires and the motor, the junction box is used as a protective shell for each component. Generally, the junction box consists of a box cover, a box body, wiring terminals, diodes, connecting wires, and connectors. Some motor junction boxes are also equipped with electronic components such as controllers to control the motor.

[0003] Most existing motor junction boxes are fixed by screws, so that the protective cover of the junction box can be removed to facilitate maintenance and repair of the internal circuits. However, due to the small size of the motor junction box, it is easy to be damaged when disassembling it with tools, and the operation is also cumbersome and defective. Utility Model Content

[0004] The utility model aims to provide a junction box for explosion-proof motors with good dustproof and waterproof effects, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a junction box for explosion-proof motors with good dustproof and waterproof effects, comprising a box body and a box cover, wherein the bottoms of both ends of the box cover are fixedly connected with plugging plates, the two ends of the box body are provided with slots corresponding to the plugging plates, the box cover is rotatably inserted with a rotating rod, the rotating rod is fixedly connected with a worm gear on one end located in the box cover, one side of the worm gear is provided with a meshing worm, both ends of the worm gear are rotatably connected with the inner wall of the box cover, the thread rotation directions on both sides of the center point of the horizontal axial cross-section of the worm gear are oppositely arranged, the two ends of the worm gear are threadedly sleeved with a sleeve plate, one side of the bottom end of the sleeve plate is fixedly connected with a positioning plate, one end of the positioning plate passes through the box body and extends into the slot, one side of the plugging plate is provided with a positioning groove corresponding to the positioning plate, the bottom of the box cover is fixedly connected with a sealing ring, one side of the bottom end of the box body is fixedly connected with a wire drum, a fixing ring is fixedly connected in the wire drum, and a plurality of rubber sheets are fixedly connected in the fixing ring.

[0006] Preferably, the plurality of rubber sheets are arranged in a triangular structure.

[0007] Preferably, a hand wheel is fixedly connected to the top end of the rotating rod.

[0008] Preferably, a groove is provided at the top of the box cover, a sliding rod is fixedly connected in the groove, an L-shaped clamping rod is slidably sleeved on the sliding rod, a plurality of clamping grooves corresponding to the clamping rod are provided on the outer wall of the rotating rod, a spring is sleeved on the sliding rod, and both ends of the spring are respectively fixedly connected to the L-shaped clamping rod and the inner wall of the groove.

[0009] Preferably, the box cover is provided with a through opening corresponding to the rotating rod, a bearing is fixedly connected in the through opening, and the rotating rod is fixedly inserted in the bearing.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The explosion-proof motor junction box with good dustproof and waterproof effects is arranged on the box body through the box cover, and the plug plate will be inserted into the slot at this time. Then, the rotating rod can be rotated to drive the worm wheel to rotate. When the worm wheel rotates, the worm on one side will mesh with it to realize the rotation of the worm. Because the rotation directions of the two ends of the worm are opposite, the two sleeves with threads sleeved on it will move relatively to drive the positioning plate to extend into the slot and insert into the positioning groove on the plug plate to realize the fixation of the box cover. The sealing ring on the bottom of the box cover can improve the sealing of the connection with the box body. The wire passes through the wire barrel, and the multiple rubber sheets inside the fixing ring are separated. The gap between the wire and the wire barrel is covered by the multiple rubber sheets to realize the dustproof effect. The utility model can achieve good dustproof and waterproof effects, and no tools are required for disassembly and assembly during disassembly and assembly, so that the motor junction box can be quickly disassembled and maintained, thereby improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a junction box for explosion-proof motors with good dust and water proof effects according to the utility model;

[0013] Figure 2 It is a schematic diagram of a rubber sheet of a junction box for explosion-proof motors with good dustproof and waterproof effects according to the utility model;

[0014] Figure 3 This is an enlarged view of point A of a junction box for an explosion-proof motor with good dustproof and waterproof effects according to the utility model.

[0015] In the figure: 1. box body; 2. box cover; 3. plug plate; 4. rotating rod; 5. worm gear; 6. worm; 7. sleeve plate; 8. positioning plate; 9. bobbin; 10. fixing ring; 11. rubber sheet; 12. hand wheel; 13. sliding rod; 14. clamping rod; 15. spring; 16. bearing; 17. sealing ring. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0017] See also Figure 1-3 The utility model provides an embodiment of a dustproof and waterproof explosion-proof motor junction box, comprising a box body 1 and a box cover 2, both ends of the box cover 2 are fixedly connected with a plug plate 3 at the bottom, both ends of the box body 1 are provided with a slot corresponding to the plug plate 3, a rotating rod 4 is rotatably inserted on the box cover 2, and a worm gear 5 is fixedly connected to one end of the rotating rod 4 located in the box cover 2, and a meshing worm 6 is provided on one side of the worm gear 5, and both ends of the worm gear 6 are rotatably connected to the inner wall of the box cover 2, and the thread rotation directions on both sides of the center point of the horizontal axial section of the worm gear 6 are oppositely arranged, and both ends of the worm gear 6 are threadedly sleeved with a sleeve plate 7, and a positioning plate 8 is fixedly connected to one side of the bottom end of the sleeve plate 7, and one end of the positioning plate 8 passes through the box body 1 and extends into the slot, and a positioning groove corresponding to the positioning plate 8 is provided on one side of the plug plate 3, and a sealing ring 17 is fixedly connected to the bottom of the box cover 2. Specifically, the box cover 2 is clamped on the box body 1, and the plug plate 3 will be inserted into the slot at this time, and then the rotating rod 4 can drive the worm wheel 5 to rotate. When the worm wheel 5 rotates, the worm 6 on one side will mesh with it to realize the rotation of the worm 6. Because the two ends of the worm 6 are set in opposite directions, the two sleeves 7 on which the threads are sleeved will move relatively, thereby driving the positioning plate 8 to extend into the slot and insert it into the positioning groove on the plug plate 3 to fix the box cover 2, and the sealing ring 17 on the bottom of the box cover 2 can improve the sealing of the connection with the box body 1; one side of the bottom end of the box body 1 is fixedly connected with a wire drum 9, and a fixing ring 10 is fixedly connected to the wire drum 9, and a plurality of rubber sheets 11 are fixedly connected to the fixing ring 10. Specifically, the wire passes through the wire drum 9, and the plurality of rubber sheets 11 inside the fixing ring 10 are separated, and the gap between the wire and the wire drum 9 is shielded by the plurality of rubber sheets 11 to achieve a dustproof effect.

[0018] In this embodiment, multiple rubber sheets 11 are all arranged in a triangular structure; a hand wheel 12 is fixedly connected to the top of the rotating rod 4; a groove is provided at the top of the box cover 2, and a sliding rod 13 is fixedly connected in the groove, and an L-shaped clamping rod 14 is slidably sleeved on the sliding rod 13, and multiple clamping grooves corresponding to the clamping rod 14 are provided on the outer wall of the rotating rod 4, and a spring 15 is sleeved on the sliding rod 13, and the two ends of the spring 15 are respectively fixedly connected to the L-shaped clamping rod 14 and the inner wall of the groove; a through opening corresponding to the rotating rod is provided on the box cover 2, and a bearing 16 is fixedly connected in the through opening, and the rotating rod 4 is fixedly inserted in the bearing 16.

[0019] Working principle: first, the box cover 2 is clamped on the box body 1, and the plug plate 3 will be inserted into the slot at this time. Then, rotating the rotating rod 4 can drive the worm wheel 5 to rotate. When the worm wheel 5 rotates, the worm 6 on one side will engage with it to realize the rotation of the worm 6. Because the two ends of the worm 6 are set in opposite directions, the two threaded sleeves 7 on it will move relatively to drive the positioning plate 8 to extend into the slot and insert into the positioning groove on the plug plate 3 to fix the box cover 2. The sealing ring 17 on the bottom of the box cover 2 can improve the sealing of the connection with the box body 1. The wire passes through the wire barrel 9, and the multiple rubber sheets 11 inside the fixing ring 10 are separated. The gap between the wire and the wire barrel 9 is shielded by the multiple rubber sheets 11 to achieve a dustproof effect.

[0020] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A junction box for an explosion-proof motor with good dustproof and waterproof effects, comprising a box body (1) and a box cover (2), characterized in that: The bottoms of both ends of the box cover (2) are fixedly connected with plug plates (3), and both ends of the box body (1) are provided with slots corresponding to the plug plates (3). A rotating rod (4) is rotatably inserted on the box cover (2), and a worm wheel (5) is fixedly connected to one end of the rotating rod (4) located inside the box cover (2). A meshing worm (6) is provided on one side of the worm wheel (5), and both ends of the worm (6) are rotatably connected to the inner wall of the box cover (2). The thread rotation directions of the two sides of the center point of the horizontal axial section of the worm (6) are opposite, and the worm (6) is fixedly connected to the inner wall of the box cover (2). Both ends of the box cover (2) are threadedly sleeved with sleeve plates (7), one side of the bottom end of the sleeve plate (7) is fixedly connected to a positioning plate (8), one end of the positioning plate (8) passes through the box body (1) and extends into the slot, one side of the plug plate (3) is provided with a positioning groove corresponding to the positioning plate (8), the bottom of the box cover (2) is fixedly connected to a sealing ring (17), one side of the bottom end of the box body (1) is fixedly connected to a wire drum (9), a fixing ring (10) is fixedly connected inside the wire drum (9), and a plurality of rubber sheets (11) are fixedly connected inside the fixing ring (10).

2. The explosion-proof motor junction box with good dust and water proof effects according to claim 1, characterized in that: The plurality of rubber sheets (11) are all arranged in a triangular structure.

3. The explosion-proof motor junction box with good dust and water proof effects according to claim 1, characterized in that: A hand wheel (12) is fixedly connected to the top end of the rotating rod (4).

4. The explosion-proof motor junction box with good dust and water proof effects according to claim 1, characterized in that: The top of the box cover (2) is provided with a groove, a slide bar (13) is fixedly connected in the groove, an L-shaped clamping bar (14) is slidably sleeved on the slide bar (13), a plurality of clamping grooves corresponding to the clamping bar (14) are provided on the outer wall of the rotating rod (4), a spring (15) is sleeved on the slide bar (13), and two ends of the spring (15) are respectively fixedly connected to the L-shaped clamping bar (14) and the inner wall of the groove.

5. The explosion-proof motor junction box with good dust and water proof effects according to claim 1, characterized in that: The box cover (2) is provided with a through opening corresponding to the rotating rod, a bearing (16) is fixedly connected in the through opening, and the rotating rod (4) is fixedly inserted in the bearing (16).

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