Sealing wire outlet plate of motor

Abstract

The utility model discloses a motor sealing wire outlet plate, which relates to the technical field of motors and comprises a base plate, the base plate is connected with a shell of a motor, a wire outlet cylinder is fixed on the base plate, an elastic sealing gasket is arranged at one end of the wire outlet cylinder far away from the base plate, and a detachable sealing assembly is arranged at one end of the sealing gasket far away from the wire outlet cylinder. The sealing assembly can press the annular body on the wire outlet cylinder and press the cylindrical body on the cable, so that sealing between the cable and the wire outlet cylinder is formed. According to the utility model, the wire outlet cylinder, the sealing gasket and the sealing assembly are arranged, the annular body part and the cylindrical body part of the sealing gasket are respectively used for sealing the wire outlet cylinder and the cable, so that water is prevented from entering the motor from the wire outlet hole, and the sealing assembly is of a detachable structure and is more convenient to repair and maintain compared with sealant.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and particularly relates to a motor sealing lead-out board. Background Art

[0002] Explosion-proof motors can be divided into explosion-proof asynchronous motors, explosion-proof synchronous motors, explosion-proof DC motors, etc., and are particularly suitable for use occasions that require high safety, such as environments where explosive gases or dust may exist, and can prevent the motor from exploding caused by sparks or high temperatures.

[0003] Some explosion-proof motors use sealant to seal at the lead-out holes. Although the sealing method using sealant can achieve the sealing at the lead-out port of the lead-out board, it is difficult to disassemble during later motor maintenance. Summary of the Utility Model

[0004] The utility model provides a motor sealing lead-out board, which uses a gasket with an annular body and a cylindrical body structure to seal the lead-out hole, realizes the detachable sealing of the lead-out hole, is convenient for maintenance, and solves at least some of the problems existing in the above-mentioned prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A motor sealing lead-out board includes a substrate, the substrate is connected to the housing of the motor, a lead-out cylinder is fixed on the substrate, an elastic gasket is arranged at one end of the lead-out cylinder far from the substrate, the gasket includes an annular body and a cylindrical body fixed on the annular body, the cable in the motor can pass through the lead-out cylinder and the cylindrical body, and a detachable sealing component is arranged at one end of the gasket far from the lead-out cylinder. The sealing component can press the annular body on the lead-out cylinder and press the cylindrical body on the cable, so as to form a seal between the cable and the lead-out cylinder and prevent water from entering.

[0007] Preferably, the sealing component includes a pressing ring, the pressing ring coincides with the axis line of the lead-out cylinder, a connecting piece is arranged on the pressing ring, and the connecting piece is used to lock the pressing ring and the lead-out cylinder, so that the pressing ring and the lead-out cylinder cooperate to clamp the annular body, and realize the sealed connection between the lead-out cylinder and the annular body.

[0008] Preferably, a plurality of arc pressing blocks are arranged on one side of the pressing ring far from the annular body and are annularly distributed with the axis line of the annular body as the center. The arc pressing blocks have the freedom to move radially along the pressing ring, and adjacent two arc pressing blocks are staggered and partially side walls are in contact.

[0009] Preferably, a plurality of circumferentially uniformly distributed sliding grooves are formed on the pressing ring, a sliding block is slidably installed in each sliding groove, and the arc pressing block corresponds to the sliding block one by one and is fixed at one end of the corresponding sliding block extending out of the pressing ring.

[0010] Preferably, a slope is provided on the part of the slider extending out of the pressure ring, and a locking sleeve capable of axially moving along the pressure ring is provided on the side of the pressure ring away from the annular body. When the locking sleeve cooperates with the slope, the locking sleeve drives the slider to move in the sliding groove.

[0011] Preferably, one end of the locking sleeve close to the pressure ring can be sleeved on the pressure ring to form a shielding protection for the slider and the arc pressing block.

[0012] Preferably, the connecting piece includes a first threaded post and a second threaded post. A first ear plate is fixed on the wire outlet cylinder. A first nut is threadedly installed at one end of the first threaded post passing through the first ear plate. A second ear plate is fixed on the locking sleeve. A second nut is threadedly installed at one end of the second threaded post passing through the second ear plate.

[0013] Preferably, a limiting ring is sleeved on the pressure ring, and the limiting ring is used to prevent the slider from detaching from the sliding groove.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. By providing a wire outlet cylinder, a sealing gasket and a sealing assembly, the annular body part and the cylindrical body part of the sealing gasket are respectively used for sealing with the wire outlet cylinder and the cable, thereby preventing water from entering the motor through the wire outlet hole. The sealing assembly is a detachable structure, which is more convenient for maintenance and repair compared with sealant;

[0016] 2. By providing a pressure ring and an arc pressing block, using connecting pieces such as bolts to lock the pressure ring to the wire outlet cylinder can clamp the annular body in cooperation with the wire outlet cylinder; then using connecting pieces such as bolts to lock the locking sleeve to the pressure ring, driving the slider on the pressure ring to move towards the center of the cylindrical body, and making the arc pressing block clamp the cylindrical body and the cable tightly, thereby realizing the sealing between the wire outlet cylinder and the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a top view of the present utility model;

[0019] Figure 3 is a perspective view of the cooperation between the pressure ring and the arc pressing block of the present utility model from the front side;

[0020] Figure 4 is a perspective view of the cooperation between the pressure ring and the arc pressing block of the present utility model from the rear side;

[0021] Figure 5 is a cross-sectional view of the overall structure of the present utility model.

[0022] In the figure: 1. Substrate, 2. Wire outlet cylinder, 3. Annular body, 4. Cylindrical body, 5. Pressing ring, 6. Arc pressing block, 7. Slide groove, 8. Slide block, 9. Inclined plane, 10. Locking sleeve, 11. First threaded post, 12. Second threaded post, 13. First ear plate, 14. Second ear plate, 15. First nut, 16. Second nut, 17. Limit ring. Detailed implementation mode

[0023] The following combines the accompanying drawings to clearly and completely describe the technical solutions in the implementation of the present utility model. The described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present utility model.

[0024] Embodiment 1

[0025] As Figures 1 to 5 shown, a motor sealing wire outlet plate provided in Embodiment 1 of the present utility model includes a substrate 1, and the substrate 1 is connected to the motor housing. The wire in the motor can pass through the substrate 1. Usually, the substrate 1 is fixed on the motor housing, and the edge of the substrate 1 is hermetically connected to the motor housing or integrally formed. In order to be able to detachably seal the wire outlet, a wire outlet cylinder 2 is fixed on the substrate 1, and the cable of the motor can extend out of the substrate 1 from the wire outlet cylinder 2. An elastic sealing gasket can be sleeved on the cable extending from the end of the wire outlet cylinder 2 away from the substrate 1. In order to seal the gap between the cable and the wire outlet cylinder 2, the designed sealing gasket includes an annular body 3 and a cylindrical body 4 fixed on the annular body 3. As Figure 5 shown, the cable can pass through the wire outlet cylinder 2 and the cylindrical body 4, and the axis lines of the annular body 3 and the cylindrical body 4 coincide. When the edge of the annular body 3 is tightly pressed against the edge of the wire outlet cylinder 2 and the cylindrical body 4 is clamped on the cable, the seal between the wire outlet cylinder 2 and the cable can be realized to prevent dust and water from entering.

[0026] For this reason, the present utility model provides a sealing assembly at the end of the sealing gasket away from the wire outlet cylinder 2, and the sealing assembly is used to press the annular body 3 on the wire outlet cylinder 2 and press the cylindrical body 4 on the cable.

[0027] The sealing assembly can adopt the structure in the prior art. For example, a threaded sleeve is used. The threaded sleeve is in threaded cooperation with the wire outlet cylinder 2. The threaded sleeve is screwed on the wire outlet cylinder 2. An inner ring convex edge is provided at one end of the threaded sleeve to make the inner ring convex edge abut against the annular body 3. Then a clamp is used to sleeve on the cylindrical body 4 to tightly clamp the cylindrical body 4 on the cable to realize the seal between the wire outlet cylinder 2 and the cable.

[0028] Embodiment 2

[0029] Based on Embodiment 1, since there is a connection structure at the end of the clamp, it cannot form an extrusion on the cylindrical body 4 within a range of 360°, so the sealing effect needs to be improved. Therefore, as Figures 2 to 5 shown, the sealing assembly designed by the present utility model includes a pressure ring 5. A connecting piece is provided on the pressure ring 5, and the connecting piece is used to lock the pressure ring 5 and the wire outlet cylinder 2. Specifically, a bolt can be used as the connecting piece to lock the pressure ring 5 and the wire outlet cylinder 2, so as to clamp the annular body 3 and make the annular body 3 sealed with the wire outlet cylinder 2.

[0030] In order to fully fit the cylindrical body 4 with the cable, six sliding grooves 7 are evenly opened in the circumferential direction of the pressure ring 5, and each sliding groove 7 points to the center of the pressure ring 5. A slider 8 is slidably installed in each sliding groove 7. As Figure 3 shown, an arc-shaped pressing block 6 is fixed on the part of the slider 8 extending out of the pressure ring 5, and the six arc-shaped pressing blocks 6 are all annularly distributed with the axis line of the annular body 3 as the center.

[0031] When all the arc-shaped pressing blocks 6 move radially along the pressure ring 5 at the same time, the cylindrical body 4 can be pressed against the cable. In order to fully surround the cylindrical body 4, as Figure 3 and Figure 4 shown, two adjacent arc-shaped pressing blocks 6 are staggeredly distributed and part of their side walls are in contact. In this way, with the cooperation of all the arc-shaped pressing blocks 6, it can be ensured that the cylindrical body 4 is completely covered for one week. It should be noted that the radian of the arc-shaped pressing block 6 should be adapted to the cylindrical body 4 and the cable.

[0032] Considering the installation and limit problems of the slider 8 on the sliding groove 7, as Figure 3 shown, the sliding groove 7 does not penetrate the pressure ring 5. At the same time, a limit ring 17 is sleeved on the pressure ring 5, and the limit ring 17 can be in threaded cooperation with the pressure ring 5. After the slider 8 is placed in the sliding groove 7, the limit ring 17 is screwed onto the pressure ring 5, and the moving range of the slider 8 can be limited to prevent the slider 8 from disengaging from the sliding groove 7.

[0033] In order to be able to drive the six sliders 8 to move towards the axis line direction of the pressure ring 5 at the same time, a slope 9 is opened on the part of the slider 8 extending out of the pressure ring 5. At the same time, a locking sleeve 10 that is concentric with the pressure ring 5 and can move axially along the pressure ring 5 is provided on the side of the pressure ring 5 away from the annular body 3, and the locking sleeve 10 can be in threaded cooperation with the pressure ring 5. As Figure 5 shown, when the locking sleeve 10 is driven to move towards the pressure ring 5, the inner cavity of the locking sleeve 10 that cooperates with the slope 9 can push the slider 8, so that the slider 8 moves towards the axis line direction of the pressure ring 5, so that the arc-shaped pressing block 6 clamps the cylindrical body 4 tightly on the cable and seals and connects the cylindrical body 4 and the cable.

[0034] One end of the locking sleeve 10 close to the pressing ring 5 can be sleeved on the pressing ring 5, forming an occlusion for the sliding block 8 and the arc pressing block 6, and also playing a role in protecting the gasket.

[0035] Embodiment 3

[0036] On the basis of Embodiment 2, considering that the pressing ring 5 needs to cooperate with the wire outlet cylinder 2 to clamp the annular body 3, and at the same time the locking sleeve 10 also needs to be able to lock with the pressing ring 5, so the present utility model can be provided with a connecting piece on the pressing ring 5. As Figure 2 and Figure 3 shown, the connecting pieces are symmetrically arranged on both sides of the pressing ring 5. Each connecting piece includes a first threaded post 11 and a second threaded post 12 fixedly connected to the pressing ring 5. Then a first ear plate 13 is fixed on the wire outlet cylinder 2, and a second ear plate 14 is fixed on the locking sleeve 10. Then the first threaded post 11 is passed through the first ear plate 13 and a first nut 15 is threadedly installed at the end of the first threaded post 11. By rotating the first nut 15, the pressing ring 5 can be locked with the wire outlet cylinder 2. The second threaded post 12 is passed through the second ear plate 14 and a second nut 16 is threadedly installed at the end of the second threaded post 12. In this way, by rotating the second nut 16, the locking sleeve 10 can be pushed towards the pressing ring 5 and locked.

[0037] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit and basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0038] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A motor sealing lead-out board, characterized in that, It includes a substrate (1), on which a wire outlet cylinder (2) is provided. At one end of the wire outlet cylinder (2) away from the substrate (1), an elastic sealing gasket is provided. The sealing gasket includes an annular body (3) and a cylindrical body (4) fixed on the annular body (3). A cable can pass through the wire outlet cylinder (2) and the cylindrical body (4). At one end of the sealing gasket away from the wire outlet cylinder (2), a detachable sealing assembly is provided, and the sealing assembly is used to press the annular body (3) on the wire outlet cylinder (2) and press the cylindrical body (4) on the cable.

2. The motor sealing lead-out board according to claim 1, wherein, The sealing assembly includes a pressure ring (5), and a connecting piece is provided on the pressure ring (5). The connecting piece is used to lock the pressure ring (5) and the wire outlet cylinder (2) so that the pressure ring (5) and the wire outlet cylinder (2) cooperate to clamp the annular body (3).

3. The motor sealing lead-out board according to claim 2, wherein On one side of the pressure ring (5) away from the annular body (3), a number of arc-shaped pressing blocks (6) are annularly distributed with the axis line of the annular body (3) as the center. The arc-shaped pressing blocks (6) have the freedom to move radially along the pressure ring (5). Adjacent two arc-shaped pressing blocks (6) are staggered and partially side walls are in contact.

4. The motor sealing lead-out board according to claim 3, characterized in that, A number of circumferentially uniformly distributed sliding grooves (7) are formed on the pressure ring (5). A slider (8) is slidably installed in each sliding groove (7). The arc-shaped pressing block (6) corresponds to the slider (8) one by one and is fixed at one end of the corresponding slider (8) extending out of the pressure ring (5).

5. The motor sealing lead-out board according to claim 4, characterized in that, A slope (9) is provided on the part of the slider (8) extending out of the pressure ring (5). A locking sleeve (10) capable of axially moving along the pressure ring (5) is provided on one side of the pressure ring (5) away from the annular body (3). When the locking sleeve (10) cooperates with the slope (9), the locking sleeve (10) drives the slider (8) to move in the sliding groove (7).

6. The motor sealing lead-out board according to claim 5, wherein, One end of the locking sleeve (10) close to the pressure ring (5) can be sleeved on the pressure ring (5).

7. The motor sealing lead-out board according to claim 5, characterized in that, The connecting piece includes a first threaded post (11) and a second threaded post (12). A first ear plate (13) is fixed on the wire outlet cylinder (2). A first nut (15) is threadedly installed at one end of the first threaded post (11) passing through the first ear plate (13). A second ear plate (14) is fixed on the locking sleeve (10). A second nut (16) is threadedly installed at one end of the second threaded post (12) passing through the second ear plate (14).

8. The motor sealing lead-out board according to claim 4, characterized in that, A limit ring (17) is sleeved on the pressure ring (5), and the limit ring (17) is used to prevent the slider (8) from disengaging from the sliding groove (7).

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