Motor sealing structure

Abstract

The utility model relates to the technical field of motors, in particular to a motor sealing structure, which comprises a sealing element arranged on a wire outlet end face of a motor; the connecting piece is arranged on the surface of the sealing piece, the connecting piece abuts against a lead of the motor, and the lead penetrates through the connecting piece; and the attaching piece is connected to the side wall of the connecting piece and abuts against the outer wall of the lead. According to the invention, the fitting degree of the lead and the cable fixing head sealing ring can be effectively improved, so that the service life of the motor is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of motors, and in particular to a sealing structure of a motor. Background Art

[0002] A motor refers to a motor that uses permanent magnets or current excitation to generate a main pole magnetic field, including three-phase asynchronous motors, permanent magnet synchronous motors, switched reluctance motors and other motors; among them, the current output terminals of the motors need to use sealing gaskets, sealing sleeves, sealing rings and other components as sealing components for the motor leads, and have been widely used in the motor industry.

[0003] The connection between the lead wire and the sealing pad of the motor is usually carried out through a cable, that is, the cable wire is used as the lead wire, and then the outer wall of the cable wire is fixed by the cable fixing head sealing ring, so that the lead wire has a better sealing effect.

[0004] Regarding the above-mentioned related technologies, the inventor believes that since the lead wire itself is made of flexible material, after the motor has been used for a long time, if the bending deformation of the lead wire is too large, the fit between the lead wire and the cable fixing head sealing ring will decrease, allowing moisture or dust in the external environment to pass through the gap between the lead wire and the cable fixing head sealing ring, thereby affecting the service life of the motor. Utility Model Content

[0005] In order to effectively improve the fit between the lead wire and the sealing ring of the cable fixing head and thus increase the service life of the motor, the present application provides a motor sealing structure.

[0006] The motor sealing structure provided in this application adopts the following technical solution:

[0007] The motor sealing structure includes:

[0008] A sealing member, wherein the sealing member is arranged on the outlet end face of the motor;

[0009] A connecting piece, the connecting piece is arranged on the surface of the sealing piece, the connecting piece abuts against the lead wire of the motor and is penetrated by the lead wire;

[0010] The fitting piece is connected to the side wall of the connecting piece and abuts against the outer wall of the lead.

[0011] By adopting the above technical scheme, the sealing member can provide basic positioning support for the connector and the fitting, while the connector can clamp and support the end of the lead wire, thereby improving the sealing of the wire outlet hole of the sealing member; in addition, through the provision of the fitting, the fitting can clamp the connection between the connector and the lead wire, and at the same time further clamp and support the side wall of the lead wire extending out of the connector, thereby effectively improving the clamping stability between the lead wire and the wire outlet hole of the sealing member, thereby reducing the moisture or dust in the external environment from passing through the gap between the lead wire and the connector, thereby achieving the purpose of improving the service life of the motor.

[0012] Optionally, the fitting comprises:

[0013] A first mounting portion and a second mounting portion, wherein the first mounting portion is connected to the surface of the sealing member and abuts against the side wall of the connecting member, and the second mounting portion is sleeved on an end of the lead wire away from the sealing member;

[0014] and a connecting portion, wherein the connecting portion is disposed between the first mounting portion and the second mounting portion and abuts against an outer wall of the lead.

[0015] By adopting the above technical solution, the first mounting portion can improve the sealing between the connector and the lead, and better reduce the situation where a gap appears between the lead and the connector after the motor has been used for a long time. At the same time, by abutting against the side wall of the lead through the connecting portion, the support degree of the lead passing through the part of the connector is improved, thereby achieving the purpose of improving the stability of the lead in use.

[0016] Optionally, the connecting piece includes:

[0017] A first connection portion and a second connection portion, wherein the first connection portion is connected to the surface of the sealing member, and the second connection portion is disposed on the first connection portion and extends in a direction away from the surface of the sealing member.

[0018] By adopting the above technical solution, the first connecting part can support and position the second connecting part, and the extended arrangement of the second connecting part and the third connecting part can enable the end of the lead to be located more on the inner side of the connecting piece, thereby effectively improving the degree of limiting support of the connecting piece for the lead, thereby reducing the passage of moisture or dust through the gap between the lead and the connecting piece.

[0019] Optionally, the second connection portion is in a cone shape as a whole, and an opening on a side of the second connection portion away from the first connection portion is smaller than an opening on the other side.

[0020] By adopting the above technical solution, the conically-arranged second connecting portion allows the connector to take into account the flexible entry and exit of the lead wire at the wire outlet hole of the seal while further tightening the end of the lead wire passing through the connector, thereby more effectively improving the degree of support of the lead wire by the connector; in addition, by setting the opening of the second connecting portion on one side away from the first connecting portion to be smaller than the opening on the other side, the convenience of connection between the fitting portion and the connector can be better improved.

[0021] Optionally, the connecting piece includes:

[0022] A first connecting portion and a second connecting portion, wherein the first connecting portion is connected to a surface of the sealing member, and the second connecting portion is disposed on the first connecting portion and extends in a direction away from the surface of the sealing member;

[0023] An outer convex portion, wherein the outer convex portion is sleeved on the side wall of the second connecting portion;

[0024] The third connecting portion is disposed on the second connecting portion and abuts against the side wall of the outer protrusion.

[0025] By adopting the above technical solution, the first connecting part can support and position the second connecting part, and the extended setting of the second connecting part and the third connecting part can enable the end of the lead to be located more on the inner side of the connecting part, effectively improving the degree of limiting support of the lead by the connecting part; in addition, through the setting of the outer protrusion, the contact area between the connecting part and the fitting can be further improved, thereby better improving the sealing degree between the fitting and the connecting part.

[0026] Optionally, the surface of the outer protrusion is configured as an inclined surface to facilitate the connection between the connecting piece and the fitting piece.

[0027] By adopting the above technical solution, the inclined surface setting can facilitate the fitting of the fitting on the connecting side wall, thereby improving the installation efficiency.

[0028] Optionally, the fitting is made of heat shrinkable material.

[0029] By adopting the above technical solution, the fitting made of heat shrinkable material can shrink when the motor leads generate heat due to operation, so that the fitting can fit more fully on the side walls of the leads and the connector, thereby better improving the connection sealing between the leads and the connector.

[0030] Optionally, at least one positioning hole is provided on the surface of the sealing member so that the sealing member can be detachably installed on the outlet end face of the motor.

[0031] By adopting the above technical solution, the seal can be detachably installed on the output end face of the motor, and different seals can be flexibly replaced according to the lead size, which is conducive to adaptive installation of the lead through connectors and fittings of different sizes.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. The sealing member can provide basic positioning support for the connector and the fitting member, while the connector can clamp and support the end of the lead wire, thereby improving the sealing performance of the outlet hole of the sealing member; in addition, through the setting of the fitting member, the fitting member can clamp the connection between the connector and the lead wire, and can also further clamp and support the side wall of the lead wire extending outside the connector, thereby effectively improving the clamping stability between the lead wire and the outlet hole of the sealing member, thereby reducing the moisture or dust in the external environment from passing through the gap between the lead wire and the connector, thereby improving the service life of the motor;

[0034] 2. The second connecting part can be supported and positioned by the first connecting part, and the extended arrangement of the second connecting part and the third connecting part can enable the end of the lead to be more located on the inner side of the connecting part, thereby effectively improving the degree of positional support of the connecting part for the lead; in addition, through the arrangement of the outer protrusion, the contact area between the connecting part and the fitting can be further increased, thereby better improving the sealing degree between the fitting and the connecting part. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the overall structure of the sealing structure of Example 1 of the present application;

[0036] Figure 2 It is a partial structural exploded schematic diagram of a sealing structure of Example 1 of the present application;

[0037] Figure 3 This is a partial structural exploded schematic diagram of the sealing structure of Example 2 of the present application;

[0038] Figure 4 This is a schematic diagram of the overall structure of the connector of Embodiment 3 of the present application;

[0039] Figure 5 It is a schematic diagram of the cross-sectional structure of the connecting piece of Example 3 of the present application.

[0040] Explanation of the reference numerals: 1. Sealing member; 11. Positioning hole; 12. Mounting plate; 13. Flange; 14. Cable outlet hole; 15. Sensor line outlet hole; 2. Connecting member; 21. First connecting portion; 22. Second connecting portion; 23. Outer protrusion; 24. Third connecting portion; 3. Lead wire; 4. Fitting member; 41. First mounting portion; 42. Second mounting portion; 43. Connecting portion; 5. Auxiliary supporting member. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-5 This application is described in further detail.

[0042] Embodiment 1

[0043] Embodiment 1 of the present application discloses a motor sealing structure. Figure 1-2 The sealing structure includes a sealing member 1, a connecting member 2 and a fitting member 4. Positioning holes 11 are provided at the four corners of the sealing member 1, and the sealing member 1 as a whole is detachably mounted on the outlet end face of the motor through a fastener, and a plurality of connecting members 2 are provided, and the plurality of connecting members 2 are evenly arranged on the surface of the sealing member 1 and are all through-connected. At the same time, the fitting member 4 is integrally sleeved on the outer wall of the lead 3, and one end of the fitting member 4 is sleeved on the outer wall of the connecting member 2, and the other end is sleeved on the connection between the lead 3 and the lead 3 wire ear. Among them, in this embodiment, the fastener can be selected as a bolt.

[0044] During installation, first, the seal 1 is installed on the end face of the motor by cooperating with the fasteners and the positioning holes 11, and then multiple lead wires 3 are respectively passed through the holes at the corresponding positions on the sealing plate, and the lead wires 3 pass through the connector 2, and then the fitting 4 is put on the outside of the lead wire 3, and one end of the fitting 4 is sleeved on the connector 2, and the other end is sleeved on the connection between the lead wire 3 and the lead wire ear, so as to achieve the sealing reinforcement of the connection between the lead wire 3 and the connector 2.

[0045] Reference Figure 1-2 In this embodiment, the seal 1 includes a mounting plate 12 and a flange 13. The positioning holes 11 are provided at the four corners of the mounting plate 12, and the flange 13 is integrally formed at the edge of the mounting plate 12. At the same time, a plurality of cable outlet holes 14 corresponding to the connectors 2 at different positions are evenly provided in the middle of the mounting plate 12, and a sensor line outlet hole 15 is also provided at a position of the mounting plate 12 deviating from the central axis. In addition, in this embodiment, an auxiliary support 5 is also provided at the position of the mounting plate 12 corresponding to the sensor line outlet hole 15.

[0046] Reference Figure 1-2In this embodiment, the connector 2 includes a first connector 21 and a second connector 22. The first connector 21 is integrally formed on the surface of the seal 1, and the second connector 22 is integrally formed on the side of the first connector 21 away from the seal 1. The second connector 22 is extended in a cylindrical shape in a direction away from the first connector 21. In this embodiment, the auxiliary support 5 has the same structure as the connector 2. In addition, in order to improve the sealing performance of the connection between the sensor line and the auxiliary support 5, a fitting 4 is also provided on the outside of the auxiliary support 5.

[0047] During installation, the lead wire 3 is passed through the cable outlet hole 14 of the seal 1 , and then passed through the first connection part 21 and the second connection part 22 in sequence, and then the lead wire 3 passing through the second connection part 22 is clamped by the fitting 4 .

[0048] Reference Figure 1-2 In this embodiment, the fitting member 4 includes a first mounting portion 41, a second mounting portion 42 and a connecting portion 43. The connecting portion 43 is integrally mounted on the outer wall of the lead 3, and the first mounting portion 41 and the second mounting portion 42 are respectively arranged at both ends of the connecting portion 43. At the same time, the fitting member 4 is made of heat shrinkable material, and in this embodiment, the fitting member 4 is specifically a heat shrinkable tube. In addition, in some other embodiments, the fitting member 4 can be selected from other heat-shrinkable materials, which are not limited here.

[0049] Working principle: During installation, one end of the first mounting portion 41 is pressed against the surface of the first connecting portion 21 and clamped to the outer wall of the second connecting portion 22, and then the second mounting portion 42 is clamped to the outer wall of the connection between the lead 3 and the lead 3 wire ear, thereby realizing the assembly of the fitting 4, the connecting member 2 and the lead 3, so as to effectively improve the connection sealing between the lead 3 and the connecting member 2 through the setting of the fitting 4. In addition, since the installation method between the auxiliary support 5 and the fitting 4 on it is similar, it will not be repeated here.

[0050] Embodiment 2

[0051] Reference Figure 1 and 3 The difference between the second embodiment and the first embodiment is that, in the present embodiment, the second connection portion 22 in the connection member 2 is configured as a cone as a whole, and the opening of the second connection portion 22 on one side away from the first connection portion 21 is smaller than the opening on the other side.

[0052] Working principle: During installation, the conical second connection portion 22 can effectively tighten the end of the lead 3 passing through the connector 2, thereby more effectively improving the degree of clamping support of the connector 2 on the lead 3, thereby reducing the direct passage of moisture or dust through the gap between the lead 3 and the connector 2.

[0053] Embodiment 3

[0054] Reference Figure 1 , 4 5. The difference between the third embodiment and the first embodiment is that, in the present embodiment, the connecting member 2 further comprises an outer protrusion 23 and a third connecting portion 24. The outer protrusion 23 is integrally sleeved on the side wall of the second connecting portion 22 away from the first connecting portion 21, and the third connecting portion 24 is disposed on a side of the second connecting portion 22 away from the first connecting portion 21.

[0055] Meanwhile, in the present embodiment, the third connection portion 24 is configured as a cone as a whole, and the surface of the outer protrusion 23 is configured as an inclined surface inclined toward a direction close to the mounting plate 12 .

[0056] Working principle: During installation, the first mounting portion 41 of the fitting 4 can be clamped on the outside of the outer protrusion 23, the second connecting portion 22 and the third connecting portion 24, thereby effectively increasing the contact area between the connecting member 2 and the fitting 4 and better improving the sealing degree between the fitting 4 and the connecting member 2.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. The motor sealing structure is characterized by: include: A sealing member (1), wherein the sealing member (1) is arranged on an outlet end face of the motor; A connecting piece (2), the connecting piece (2) being arranged on a surface of the sealing piece (1), the connecting piece (2) being in contact with a lead wire (3) of the motor and being penetrated by the lead wire (3); A fitting member (4), wherein the fitting member (4) is connected to a side wall of the connecting member (2) and abuts against an outer wall of the lead wire (3).

2. The motor sealing structure according to claim 1, characterized in that: The fitting (4) comprises: a first mounting portion (41) and a second mounting portion (42), wherein the first mounting portion (41) is connected to a surface of the sealing member (1) and abuts against a side wall of the connecting member (2), and the second mounting portion (42) is sleeved on an end of the lead wire (3) away from the sealing member (1); and a connecting portion (43), wherein the connecting portion (43) is arranged between the first mounting portion (41) and the second mounting portion (42) and abuts against an outer wall of the lead wire (3).

3. The motor sealing structure according to claim 1 or 2, characterized in that: The connecting member (2) comprises: A first connecting portion (21) and a second connecting portion (22), wherein the first connecting portion (21) is connected to a surface of the sealing member (1), and the second connecting portion (22) is arranged on the first connecting portion (21) and extends in a direction away from the surface of the sealing member (1).

4. The motor sealing structure according to claim 3, characterized in that: The second connection portion (22) is in a cone shape as a whole, and the opening of the second connection portion (22) on one side away from the first connection portion (21) is smaller than the opening on the other side.

5. The motor sealing structure according to claim 1 or 2, characterized in that: The connecting member (2) comprises: A first connecting portion (21) and a second connecting portion (22), wherein the first connecting portion (21) is connected to the surface of the sealing member (1), and the second connecting portion (22) is arranged on the first connecting portion (21) and extends in a direction away from the surface of the sealing member (1); An outer convex portion (23), wherein the outer convex portion (23) is sleeved on a side wall of the second connecting portion (22); A third connecting portion (24), the third connecting portion (24) being arranged on the second connecting portion (22) and abutting against a side wall of the outer protrusion (23).

6. The motor sealing structure according to claim 5, characterized in that: The surface of the outer protrusion (23) is arranged as an inclined surface, so as to facilitate the connection between the connecting piece (2) and the fitting piece (4).

7. The motor sealing structure according to claim 1, characterized in that: The fitting part (4) is made of heat shrinkable material.

8. The motor sealing structure according to claim 1, characterized in that: At least one positioning hole (11) is provided on the surface of the sealing member (1), so that the sealing member (1) can be detachably mounted on the outlet end face of the motor.

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