Waterproof and oil-resistant sealing structure of motor lead wire

Abstract

The utility model relates to the technical field of motors, in particular to a waterproof and oil-resistant sealing structure of a motor lead wire, which comprises a junction box body, a wire inlet pipe is arranged in a through hole, a groove is arranged on the inner wall of the wire inlet pipe, a first sealing gasket is fixedly connected in the groove, and a second sealing gasket is arranged in the first sealing gasket. And a plurality of holes communicating with the groove are formed in the outer wall of the wire inlet pipe in a penetrating mode, and the interiors of the multiple holes are slidably connected with first slope blocks. A movable nut moves, a sliding ring drives a plurality of second slope blocks to move, the second slope blocks are matched with the first slope blocks, then the first slope blocks are pushed to be close to one another, the first slope blocks drive a plurality of extrusion plates to move, the extrusion plates extrude a first sealing gasket, and then the first sealing gasket is shrunk; and the inner wall of the first sealing gasket is tightly abutted against the outer wall of the lead wire, so that the wire inlet pipe and the lead wire are sealed.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a waterproof and oil-resistant sealing structure for a motor lead wire. Background Art

[0002] The motor junction box is used to introduce the wires inside the motor into the junction box and connect them with the lead wires introduced from the outside, thereby introducing the external electrical energy into the interior of the motor and allowing the motor to convert the electrical energy into mechanical energy. However, when introducing the lead wires into the interior of the junction box, they are generally inserted into the interior of the junction box through the inlets at both ends of the junction box, and then the lead wires are connected inside the junction box.

[0003] The existing motor lead sealing structure basically seals the motor lead and the junction box by fixing screws and louver locks. However, after the louver locks are tightened with fixing screws, the multiple blades cannot be completely sealed. During use, liquid will still penetrate into the junction box, causing a short circuit in the junction box. Utility Model Content

[0004] The utility model aims to provide a waterproof and oil-resistant sealing structure for motor lead wires, which has the characteristics of effectively sealing between the motor lead wires and a junction box to avoid short circuits in the junction box.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waterproof and oil-resistant sealing structure for motor lead wires, comprising a junction box body, a through hole being penetrated through one side wall of the junction box body, an inlet pipe being arranged inside the through hole, left and right ends of the inlet pipe extending to the outside of the through hole, a groove being formed on the inner wall of the inlet pipe, a first sealing gasket being fixedly connected to the inside of the groove, a plurality of holes being penetrated through the outer wall of the inlet pipe and connected to the groove, a first inclined surface block being slidably connected to the inside of the plurality of holes, one end of each of the first inclined surface blocks extending to the inside of the groove, and being fixedly connected to an extrusion plate abutting the first sealing gasket.

[0006] In order to seal between the baffle and the junction box body, as a preferred waterproof and oil-resistant sealing structure for the motor lead wire of the utility model, the outer wall of the inlet pipe is fixedly connected with the baffle, the left side wall of the baffle is provided with a sealing groove, and the inside of the sealing groove is fixedly connected with a second sealing gasket;

[0007] A sealing block matching the sealing groove is fixedly connected to the right side wall of the junction box body.

[0008] In order to push the multiple first bevel blocks closer to each other, as a preferred waterproof and oil-resistant sealing structure for the motor lead wire of the utility model, the outer wall of the inlet pipe is threadedly connected with a movable nut located on the right side of the baffle, and the inner wall of the movable nut is provided with a slide groove, and the interior of the slide groove is slidably connected with a slip ring, and the inner wall of the slip ring is fixedly connected with multiple second bevel blocks matching the first bevel blocks, and the other end of the second bevel block extends to the inside of the hole.

[0009] In order to fix the inlet pipe into the through hole, as a preferred waterproof and oil-resistant sealing structure for the motor lead wire of the utility model, the outer wall of the inlet pipe is threadedly connected with a fixing nut located inside the junction box body.

[0010] In order to facilitate the multiple extrusion plates to squeeze the first sealing gasket for shrinkage, as a preferred waterproof and oil-resistant sealing structure for a motor lead wire of the utility model, the multiple extrusion plates are all arranged as an arc structure, and the multiple extrusion plates form a circular ring structure.

[0011] In order to increase the sealing effect of the first sealing gasket and the second sealing gasket, as a preferred waterproof and oil-resistant sealing structure for a motor lead wire of the utility model, the first sealing gasket and the second sealing gasket are both made of silicone.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The seal between the baffle and the junction box body is performed by the mutual cooperation between the sealing block, the sealing groove and the second sealing gasket. When wiring, the lead wire is passed through the inlet pipe, and then the movable nut is rotated to move the movable nut. At the same time, since the second inclined block extends into the hole, when the movable nut is rotated, the second inclined block limits the slip ring, so that the slip ring slides in the slide groove, so that the slip ring can only move left and right, and then the slip ring drives multiple second inclined blocks to move, and through the mutual cooperation between the second inclined block and the first inclined block, multiple first inclined blocks are pushed closer to each other, and multiple first inclined blocks drive multiple extrusion plates to move, so that multiple extrusion plates squeeze the first sealing gasket, and then the first sealing gasket shrinks, so that the inner wall of the first sealing gasket is closely abutted against the outer wall of the lead wire, and then the inlet pipe and the lead wire are sealed to prevent liquid from penetrating into the junction box body during use, causing a short circuit in the junction box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model from top view;

[0016] Figure 3 This is a schematic diagram of the cross-section structure of the inlet pipe of the utility model;

[0017] Figure 4 For this utility model Figure 2 The enlarged structural diagram of part a in the middle;

[0018] In the figure: 1. terminal box body; 2. through hole; 3. wire inlet pipe; 4. groove; 5. first sealing gasket; 6. hole; 7. first inclined block; 8. extrusion plate; 9. baffle; 10. sealing groove; 11. second sealing gasket; 12. sealing block; 13. movable nut; 14. slide groove; 15. slip ring; 16. second inclined block; 17. fixing nut. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments to help understand the content of the present invention. The methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercial products unless otherwise specified.

[0020] See also Figures 1 to 4 A waterproof and oil-resistant sealing structure for motor lead wires includes a junction box body 1, a through hole 2 is formed through one side wall of the junction box body 1, a wire inlet pipe 3 is provided inside the through hole 2, and both left and right ends of the wire inlet pipe 3 extend to the outside of the through hole 2. A groove 4 is formed on the inner wall of the wire inlet pipe 3, a first sealing gasket 5 is fixedly connected inside the groove 4, a plurality of holes 6 communicating with the groove 4 are formed through the outer wall of the wire inlet pipe 3, a first inclined surface block 7 is slidably connected inside the plurality of holes 6, one end of each of the plurality of first inclined surface blocks 7 extends to the inside of the groove 4, and a pressing plate 8 abutting against the first sealing gasket 5 is fixedly connected.

[0021] In this embodiment: first, one end of the inlet pipe 3 is passed through the through hole 2, so that the baffle 9 is abutted against the junction box body 1, and then the inlet pipe 3 is fixed to the through hole 2 by the fixing nut 17; when wiring, the lead wire is passed through the inlet pipe 3, and then the multiple first inclined plane blocks 7 are close to each other, and the multiple first inclined plane blocks 7 drive the multiple extrusion plates 8 to move, so that the multiple extrusion plates 8 squeeze the first sealing gasket 5, and then the first sealing gasket 5 shrinks, so that the inner wall of the first sealing gasket 5 is tightly abutted against the outer wall of the lead wire, and then the inlet pipe 3 and the lead wire are sealed to prevent liquid from penetrating into the junction box body 1 during use, causing a short circuit in the junction box body 1.

[0022] As a technical optimization solution of the utility model, the outer wall of the inlet pipe 3 is fixedly connected with a baffle 9, the left side wall of the baffle 9 is provided with a sealing groove 10, and the inside of the sealing groove 10 is fixedly connected with a second sealing gasket 11; the right side wall of the junction box body 1 is fixedly connected with a sealing block 12 matching the sealing groove 10.

[0023] In this embodiment: when the baffle 9 abuts against the junction box body 1, the sealing block 12 enters the sealing groove 10, and the sealing block 12 squeezes the second sealing gasket 11, causing the second sealing gasket 11 to deform and extend, and then the second sealing gasket 11 tightly wraps one end of the sealing block 12, thereby sealing the baffle 9 and the junction box body 1.

[0024] As a technical optimization solution of the utility model, the outer wall of the inlet pipe 3 is threadedly connected to a movable nut 13 located on the right side of the baffle 9, the inner wall of the movable nut 13 is provided with a slide groove 14, the interior of the slide groove 14 is slidably connected to a slip ring 15, the inner wall of the slip ring 15 is fixedly connected to a plurality of second bevel blocks 16 matching the first bevel blocks 7, and the other end of the second bevel block 16 extends to the interior of the hole 6.

[0025] In the present embodiment: the movable nut 13 is rotated to move the movable nut 13. At the same time, since the second inclined surface block 16 extends into the hole 6, when the movable nut 13 is rotated, the second inclined surface block 16 limits the slip ring 15, so that the slip ring 15 slides in the slide groove 14, so that the slip ring 15 can only move left and right, and then the slip ring 15 drives the multiple second inclined surface blocks 16 to move, and through the mutual cooperation between the second inclined surface block 16 and the first inclined surface block 7, the multiple first inclined surface blocks 7 are pushed closer to each other.

[0026] As a technical optimization solution of the present utility model, the outer wall of the inlet pipe 3 is threadedly connected with a fixing nut 17 located inside the junction box body 1 .

[0027] In this embodiment, the fixing nut 17 can fix the inlet pipe 3 into the through hole 2 .

[0028] As a technical optimization solution of the present invention, the multiple extrusion plates 8 are all configured as an arc structure, and the multiple extrusion plates 8 form a circular ring structure.

[0029] In this embodiment, the multiple extrusion plates 8 are all configured as an arc-shaped structure, which enables the multiple extrusion plates 8 to closely abut against the outer wall of the first sealing gasket 5, so that the multiple extrusion plates 8 can squeeze the first sealing gasket 5 to shrink.

[0030] As a technical optimization solution of the present invention, the first sealing gasket 5 and the second sealing gasket 11 are both made of silicone.

[0031] In this embodiment, the first sealing gasket 5 and the second sealing gasket 11 are both made of silicone, which can make the first sealing gasket 5 and the second sealing gasket 11 deform, thereby increasing the sealing effect of the first sealing gasket 5 and the second sealing gasket 11 .

[0032] Working principle:

[0033] First, one end of the inlet pipe 3 is passed through the through hole 2, so that the baffle 9 abuts against the junction box body 1, and then the inlet pipe 3 is fixed to the through hole 2 by the fixing nut 17. When the baffle 9 abuts against the junction box body 1, the sealing block 12 enters the sealing groove 10, and the second sealing gasket 11 is squeezed by the sealing block 12, so that the second sealing gasket 11 is deformed and extended, and then the second sealing gasket 11 tightly wraps one end of the sealing block 12, thereby sealing between the baffle 9 and the junction box body 1.

[0034] When wiring, the lead wire is passed through the wire inlet tube 3, and then the movable nut 13 is rotated to move the movable nut 13. At the same time, since the second inclined surface block 16 extends into the hole 6, when the movable nut 13 rotates, the second inclined surface block 16 limits the slip ring 15, so that the slip ring 15 slides in the slide groove 14, so that the slip ring 15 can only move left and right, and then the slip ring 15 drives the plurality of second inclined surface blocks 16 to move, and through the mutual cooperation between the second inclined surface block 16 and the first inclined surface block 7, the plurality of first inclined surface blocks 7 are pushed to approach each other, and the plurality of first inclined surface blocks 7 drive the plurality of extrusion plates 8 to move, so that the plurality of extrusion plates 8 squeeze the first sealing gasket 5, and then the first sealing gasket 5 shrinks, so that the inner wall of the first sealing gasket 5 is tightly abutted against the outer wall of the lead wire, and then the lead wire tube 3 and the lead wire are sealed to prevent liquid from penetrating into the junction box body 1 during use, resulting in a short circuit in the junction box body 1.

[0035] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "middle", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0036] However, what is described above is only a specific embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the patent of the present invention should still fall within the scope covered by the claims of the present invention.

Claims

1. A waterproof and oil-resistant sealing structure for motor lead wires, comprising a junction box body (1), a through hole (2) being formed through one side wall of the junction box body (1), characterized in that: A wire inlet pipe (3) is arranged inside the through hole (2), the left and right ends of the wire inlet pipe (3) both extend to the outside of the through hole (2), a groove (4) is provided on the inner wall of the wire inlet pipe (3), and a first sealing gasket (5) is fixedly connected to the inside of the groove (4); The outer wall of the inlet pipe (3) is penetrated by a plurality of holes (6) in communication with the groove (4); the interiors of the plurality of holes (6) are slidably connected to a first inclined surface block (7); one end of the plurality of first inclined surface blocks (7) extends into the interior of the groove (4) and is fixedly connected to an extrusion plate (8) abutting against the first sealing gasket (5).

2. The waterproof and oil-resistant sealing structure for motor lead wires according to claim 1, characterized in that: A baffle (9) is fixedly connected to the outer wall of the inlet pipe (3), a sealing groove (10) is provided on the left side wall of the baffle (9), and a second sealing gasket (11) is fixedly connected inside the sealing groove (10); A sealing block (12) matching the sealing groove (10) is fixedly connected to the right side wall of the junction box body (1).

3. A waterproof and oil-resistant sealing structure for motor lead wires according to claim 2, characterized in that: The outer wall of the inlet pipe (3) is threadedly connected to a movable nut (13) located on the right side of the baffle (9); the inner wall of the movable nut (13) is provided with a slide groove (14); the interior of the slide groove (14) is slidably connected to a slip ring (15); the inner wall of the slip ring (15) is fixedly connected to a plurality of second inclined plane blocks (16) matching the first inclined plane blocks (7); the other end of the second inclined plane block (16) extends to the interior of the hole (6).

4. The waterproof and oil-resistant sealing structure for motor lead wires according to claim 1, characterized in that: The outer wall of the inlet pipe (3) is threadedly connected with a fixing nut (17) located inside the junction box body (1).

5. The waterproof and oil-resistant sealing structure for motor lead wires according to claim 1, characterized in that: The plurality of extrusion plates (8) are all arranged as arc-shaped structures, and the plurality of extrusion plates (8) form a circular ring structure.

6. The waterproof and oil-resistant sealing structure for motor lead wires according to claim 2, characterized in that: The first sealing gasket (5) and the second sealing gasket (11) are both made of silicone.

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