Pressing plate, motor, servo assembly and industrial robot

Abstract

The utility model discloses a pressing plate, a motor, a servo assembly and an industrial robot, the pressing plate is used for connecting a rotary transformer stator and an end cover of the motor, and the periphery of the rotary transformer stator is provided with a flange. The pressing plate comprises a first plate body and a second plate body. The first plate body is arranged around the rotary transformer stator and abuts against the end wall, away from the end cover, of the flange. The second plate body is arranged around the flange and connected with the first plate body, and the second plate body is located between the first plate body and the end cover. The pressing plate is suitable for pressing the rotary transformer stator to the end cover. According to the scheme, the rotary transformer stator can be effectively prevented from moving in the radial direction and the axial direction, the stability of connection between the rotary transformer stator and the end cover is improved, and continuous normal operation of the motor is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and in particular to a pressing plate, a motor, a servo component and an industrial robot. Background Art

[0002] The motor uses a gasket to connect the resolver stator and the end cap. Specifically, a threaded hole is provided on the end cap, a connection hole is provided on the gasket, and a fastener is passed through the connection hole and threadedly connected with the threaded hole, that is, the resolver stator can be pressed axially to the end cap to achieve assembly connection. Affected by the vibration of the motor during operation, the resolver stator will move significantly in its radial direction relative to the end cap, that is, it will affect the normal operation of the motor. Utility Model Content

[0003] The main purpose of the utility model is to provide a pressing plate, a motor, a servo assembly and an industrial robot, aiming to solve the technical problem that the rotary transformer stator will move significantly along its radial direction relative to the end cover.

[0004] To achieve the above-mentioned purpose, the first embodiment of the utility model provides a pressure plate for connecting a resolver stator and an end cover of a motor, wherein a flange is provided on the outer periphery of the resolver stator, and the pressure plate comprises:

[0005] A first plate body is arranged around the resolver stator, the first plate body abutting against an end wall of the flange facing away from the end cover;

[0006] A second plate body, arranged around the flange and connected to the first plate body, the second plate body being located between the first plate body and the end cover;

[0007] Wherein, the pressing plate is suitable for pressing the resolver stator onto the end cover.

[0008] In some embodiments, the first plate body and the second plate body are arranged integrally, the pressure plate includes at least two connecting holes, each of the connecting holes penetrates the first plate body and the second plate body along the axial direction of the rotary stator, and the connecting holes are suitable for allowing a connecting member to pass through to connect the end cover.

[0009] In some embodiments, the surrounding angle A of the pressure plate around the resolver stator satisfies: 180°<A≤360°.

[0010] In some embodiments, the flange is located on a first outer peripheral wall of the resolver stator, and the flange has a second outer peripheral wall facing away from the first outer peripheral wall;

[0011] The first plate body is suitable for abutting the first outer peripheral wall, and the second plate body is spaced apart from the second outer peripheral wall; or, the first plate body is spaced apart from the first outer peripheral wall, and the second plate body is suitable for abutting the second outer peripheral wall; or, the first plate body is suitable for abutting the first outer peripheral wall, and the second plate body is suitable for abutting the second outer peripheral wall.

[0012] In some embodiments, the first plate body is provided with a first groove, and along the axial direction of the rotary stator, the first groove is suitable for the first protrusion of the end wall to pass through;

[0013] and / or,

[0014] The first plate body is provided with a second protrusion, and along the axial direction of the resolver stator, the second protrusion is suitable for penetrating the second groove of the end wall.

[0015] In some embodiments, the flange is located on a first peripheral wall of the resolver stator, the flange has a second peripheral wall facing away from the first peripheral wall, and,

[0016] The inner peripheral wall of the pressure plate is provided with a third protrusion, and along the radial direction of the rotary stator, the third protrusion is suitable for penetrating the third groove of the first outer peripheral wall;

[0017] and / or,

[0018] The inner peripheral wall of the pressure plate is provided with a fourth protrusion, and along the radial direction of the rotary stator, the fourth protrusion is suitable for penetrating the fourth groove of the second outer peripheral wall.

[0019] In some embodiments, along the axial direction of the resolver stator, the pressure plate includes a bottom wall close to the end cover, and the bottom wall abuts against the end cover; or,

[0020] Along the axial direction of the resolver stator, the pressure plate includes a bottom wall close to the end cover, and the bottom wall is spaced apart from the end cover.

[0021] The second aspect of the utility model provides a motor, comprising the pressure plate of the above embodiment, and also comprising the resolver stator, the end cover and a connector, wherein the connector connects the pressure plate and the end cover, and the connector can press the resolver stator onto the end cover.

[0022] In some embodiments, the flange is located on a first outer peripheral wall of the resolver stator, and the flange is in a ring shape arranged around the first outer peripheral wall.

[0023] In some embodiments, along the axial direction of the resolver stator, the end cover has a top wall facing the resolver stator, and the flange abuts against the top wall.

[0024] In some embodiments, the top wall is provided with a mounting hole, the axis of the mounting hole coincides with the axis of the resolver stator, and along the axial direction of the resolver stator, the resolver stator is at least partially penetrated by the mounting hole.

[0025] In some embodiments, along the axial direction of the resolver stator, the end cover has a top wall facing the resolver stator, the top wall is provided with a fifth groove, and along the axial direction of the resolver stator, the flange is at least partially accommodated in the fifth groove.

[0026] A third aspect of the present invention provides a servo assembly, comprising the motor of the above embodiment.

[0027] A fourth aspect of the present invention provides an industrial robot, comprising a servo assembly according to the above embodiment.

[0028] Compared with the prior art, the beneficial effects of the utility model include:

[0029] In the prior art, a gasket is used to press the resolver stator to the end cover along the axial direction of the resolver stator. Affected by the vibration of the motor during operation, the resolver stator will move significantly in its radial direction, thereby affecting the normal operation of the motor. In the technical solution of the present application, the pressure plate can connect the resolver stator and the end cover of the motor. A flange is provided on the outer periphery of the resolver stator. The pressure plate includes a first plate body and a second plate body. The second plate body is located between the first plate body and the end cover. The first plate body is arranged around the resolver stator, and the first plate body abuts against the end wall of the flange away from the end cover, which can limit the axial movement of the resolver stator. The second plate body is arranged around the flange and connected to the first plate body, which can limit the radial movement of the resolver stator. Therefore, the pressure plate of the present solution can stably press the resolver stator to the end cover, effectively suppress the radial or axial movement of the resolver stator, improve the stability of the connection between the resolver stator and the end cover, and ensure that the motor can continue to operate normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0031] Figure 1 It is a structural schematic diagram of a motor in an embodiment of the utility model;

[0032] Figure 2 It is an exploded schematic diagram of a motor in one embodiment of the utility model;

[0033] Figure 3is a cross-sectional schematic diagram of a motor in an embodiment of the utility model;

[0034] Figure 4 for Figure 3 A partial enlarged schematic diagram of the center A; wherein the first plate body abuts against the first peripheral wall, and the second plate body abuts against the second peripheral wall;

[0035] Figure 5 It is a schematic structural diagram of a rotary transformer stator in one embodiment of the utility model;

[0036] Figure 6 It is a structural schematic diagram of a pressing plate in an embodiment of the utility model;

[0037] Figure 7 It is a partial schematic diagram of a motor in an embodiment of the utility model; wherein the first plate body and the second plate body are arranged integrally, and the first plate body is spaced apart from the first peripheral wall, and the second plate body abuts against the second peripheral wall;

[0038] Figure 8 It is a partial schematic diagram of a motor in an embodiment of the utility model; wherein the first plate body and the second plate body are arranged separately;

[0039] Fig. 9 It is a partial schematic diagram of a motor in an embodiment of the utility model; wherein the first plate body and the second plate body are arranged separately, and the protrusion of the second plate body passes through the groove body of the first plate body;

[0040] Fig.10 It is a partial schematic diagram of a motor in an embodiment of the utility model; wherein, along the axial direction of the resolver stator, the first protrusion penetrates the first groove, and the first plate body abuts against the first peripheral wall, and the second plate body is spaced from the second peripheral wall;

[0041] Fig.11 It is a partial schematic diagram of a motor in an embodiment of the utility model; wherein, along the axial direction of the resolver stator, the second protrusion penetrates the second groove;

[0042] Fig.12 It is a partial schematic diagram of a motor in an embodiment of the utility model; wherein, along the radial direction of the resolver stator, the third protrusion penetrates the third groove;

[0043] Fig.13 It is a partial schematic diagram of a motor in an embodiment of the utility model; wherein, along the radial direction of the rotary transformer stator, the fourth protrusion passes through the fourth groove, and the flange portion is accommodated in the fifth groove.

[0044] Description of Figure Numbers:

[0045] Motor 1;

[0046] Pressing plate 10;

[0047] First plate 100; first groove 110; second protrusion 120; groove body 130;

[0048] The second plate 200; the bump 210;

[0049] Connecting hole 300;

[0050] Inner peripheral wall 400; third protrusion 410; fourth protrusion 420;

[0051] bottom wall 500;

[0052] Rotary stator 20; first peripheral wall 201; third groove 2011; flange 202; end wall 2021;

[0053] Second peripheral wall 2022; first protrusion 2023; second groove 2024; fourth groove 2025;

[0054] End cover 30; top wall 301; mounting hole 3011; fifth groove 3012;

[0055] Connector 40;

[0056] Encoder 50;

[0057] Radial X; axial Z.

[0058] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0060] The motor uses a gasket to connect the resolver stator and the end cap. Specifically, a threaded hole is provided on the end cap, a connection hole is provided on the gasket, and a fastener is passed through the connection hole and threadedly connected with the threaded hole, that is, the resolver stator can be pressed axially to the end cap to achieve assembly connection. Affected by the vibration of the motor during operation, the resolver stator will move significantly in its radial direction relative to the end cap, that is, it will affect the normal operation of the motor.

[0061] In view of this, the first embodiment of the utility model proposes a pressure plate 10, which is used to connect the resolver stator 20 and the end cover 30 of the motor 1, and can effectively suppress the shaking of the resolver stator 20 relative to the end cover 30, so as to ensure that the motor 1 can continue to operate normally. It can be understood that the motor 1 can be provided with an encoder 50, and the encoder 50 can measure the rotation angle or position of the motor 1. It should be noted that the outer periphery of the resolver stator 20 is provided with a flange 202. Figures 1 to 13 The pressing plate 10 according to the embodiment of the present application is introduced. Specifically, the pressing plate 10 includes a first plate body 100 and a second plate body 200 .

[0062] Reference Figures 1 to 4 as well as Figure 6 First, the first plate 100 is introduced. The first plate 100 can be arranged around the resolver stator 20. In some embodiments, the first plate 100 can only surround a portion of the resolver stator 20. In other embodiments, the first plate 100 can surround the entire periphery of the resolver stator 20, and the specific surrounding angle of the first plate 100 can be determined according to actual conditions. That is, the first plate 100 can be sleeved on the periphery of the resolver stator 20. Specifically, the first plate 100 abuts against the end wall 2021 of the flange 202 that is away from the end cover 30. Figure 4 The orientation in is used as a reference, that is, the first plate body 100 can abut against the upper wall of the flange 202. Therefore, the first plate body 100 can inhibit the rotary stator 20 from moving along the axial direction Z thereof.

[0063] Reference Figures 1 to 4 as well as Figure 6 , the second plate body 200 is introduced below. The structure of the second plate body 200 can be the same as that of the first plate body 100, or a different structural arrangement can be adopted. The second plate body 200 is arranged around the flange 202. In some embodiments, the second plate body 200 can surround a portion of the flange 202. In other embodiments, the second plate body 200 can surround the entire circumference of the flange 202, and the specific surrounding angle of the second plate body 200 can be determined according to actual conditions. That is, the second plate body 200 can be sleeved on the outer circumference of the flange 202. Therefore, the second plate body 200 can suppress the large movement of the resolver stator 20 along its radial direction X. It should be noted that the radial direction X of the resolver stator 20 is perpendicular to its axial direction Z, so Figure 4 The axial direction Z can point to the up and down direction, and the radial direction X can be any horizontal direction. Figure 4 In the figure, the radial direction X is taken as an example to illustrate.

[0064] Reference Figure 4 and Figure 6 The positional relationship between the second plate 200 and the first plate 100 is described below. The second plate 200 can be connected to the first plate 100. The second plate 200 is located between the first plate 100 and the end cover 30. Figure 4 The orientation in is used as a reference, that is, the first plate body 100 can be arranged on a side of the second plate body 200 away from the end cover 30.

[0065] In the prior art, a gasket is used to press the resolver stator to the end cover along the axial direction of the resolver stator. Under the influence of the vibration when the motor is running, the resolver stator will move significantly in its radial direction, thereby affecting the normal operation of the motor. In the technical solution of the present application, the pressure plate 10 can connect the resolver stator 20 and the end cover 30 of the motor 1. A flange 202 is provided on the outer periphery of the resolver stator 20. The pressure plate 10 includes a first plate body 100 and a second plate body 200. The second plate body 200 is located between the first plate body 100 and the end cover 30. The first plate body 100 is arranged around the resolver stator 20, and the first plate body 100 abuts against the end wall 2021 of the flange 202 that is away from the end cover 30, that is, it can limit the resolver stator 20 from moving along its axial direction Z. The second plate body 200 is arranged around the flange 202 and connected to the first plate body 100, that is, it can limit the resolver stator 20 from moving significantly in its radial direction X. Therefore, the pressure plate 10 of the present solution can stably press the resolver stator 20 to the end cover 30, effectively suppressing the movement of the resolver stator 20 along its radial X or axial Z direction, improving the stability of the connection between the resolver stator 20 and the end cover 30, and ensuring that the motor 1 can continue to operate normally.

[0066] Reference Figures 2 to 4 as well as Figure 6 In some embodiments, the first plate body 100 can be arranged integrally with the second plate body 200. The pressing plate 10 includes at least two connecting holes 300. In other words, the number of connecting holes 300 of the pressing plate 10 can be two, three or four, etc., and the specific number of connecting holes 300 can be determined according to actual conditions. Some embodiments of the present application are described by taking the setting of three connecting holes 300 as an example. It should be noted that the connecting holes 300 can be arranged at intervals. Furthermore, the interval between two adjacent connecting holes 300 can be a uniform interval or a non-uniform interval. Some embodiments of the present application are described by taking the uniform interval between two adjacent connecting holes 300 as an example.

[0067] Reference Figure 3, each connection hole 300 penetrates the first plate body 100 and the second plate body 200 along the axial direction Z of the rotary stator 20. The connection hole 300 of the pressure plate 10 can be provided for the connection member 40 to connect the end cover 30. It can be understood that the connection member 40 can be a screw, and the end cover 30 can be provided with a threaded hole. The screw passes through the connection hole 300 of the pressure plate 10 and is threadedly connected with the threaded hole of the end cover 30. After tightening the screw, the screw can press the pressure plate 10 along the axial direction Z, so that the pressure plate 10 can press the rotary stator 20 to the end cover 30. In the prior art, multiple gaskets are used to press the rotary stator to the end cover, and the overall assembly efficiency is low. In addition, during manual operation, the thin gaskets are easy to slip and fall into the motor, causing safety hazards. The pressure plate 10 of this solution is provided with multiple connection holes 300, which is equivalent to integrating multiple gaskets into one, which can not only improve the overall assembly efficiency of the motor 1, but also avoid the situation where the pressure plate 10 falls into the motor 1, and has excellent practicality.

[0068] It should be noted that the material of the pressing plate 10 can be a plastic material, and the first plate body 100 and the second plate body 200 of the pressing plate 10 can be integrally injection molded. Specifically, the pressing plate 10 can be made of nylon material.

[0069] Reference Figure 8 and Fig. 9 In other embodiments, the first plate body 100 and the second plate body 200 may also be arranged separately. Specifically, the first plate body 100 and the second plate body 200 may each be provided with at least two connection holes 300, and the connection hole 300 of the first plate body 100 may overlap with the connection hole 300 of the second plate body 200. The connection hole 300 of the first plate body 100 may penetrate the first plate body 100 along the axial direction Z of the rotary stator 20. The connection hole 300 of the second plate body 200 may penetrate the second plate body 200 along the axial direction Z of the rotary stator 20. During assembly and connection, the connector 40 may penetrate the connection hole 300 of the first plate body 100 and the connection hole 300 of the second plate body 200 at the same time, and then be connected with the threaded hole of the end cover 30 to achieve assembly. In this solution, the first plate 100 and the second plate 200 are arranged separately, that is, when the motor 1 is maintained, the first plate 100 or the second plate 200 can be replaced separately, which can reduce maintenance costs and extend the service life of the motor 1.

[0070] The following describes the specific connection arrangement between the first plate body 100 and the second plate body 200 when they are arranged separately. Figure 8 In some embodiments, the first plate 100 may directly abut against the second plate 200. Fig. 9In other embodiments, the first plate body 100 can be clamped with the second plate body 200. Specifically, the first plate body 100 can be provided with a slot body 130, and the second plate body 200 can be provided with a protrusion 210. The slot body 130 can be adapted to the arrangement of the protrusion 210, and the protrusion 210 can pass through the slot body 130 along the axial direction Z of the rotary transformer stator 20. It should be noted that the first plate body 100 can also be provided with a protrusion 210, and the second plate body 200 can be provided with a slot body 130. The specific arrangement of the protrusion 210 and the slot body 130 can be determined according to actual conditions. In this solution, the protrusion 210 passes through the slot body 130, which can effectively improve the stability of the connection between the first plate body 100 and the second plate body 200, and can prevent the first plate body 100 from shaking relative to the second plate body 200.

[0071] Reference Figure 6 In some embodiments, the wrapping angle A of the pressure plate 10 around the rotary stator 20 satisfies: 180°<A≤360°. Exemplarily, A can be 185°, 200°, 240°, 270°, 320° or 360°, etc. It should be noted that in some embodiments, the wrapping angle of the first plate body 100 around the rotary stator 20 can be A. In other embodiments, the wrapping angle of the second plate body 200 around the rotary stator 20 can be A. In other embodiments, the wrapping angles of the first plate body 100 and the second plate body 200 around the rotary stator 20 can be both A. Some embodiments of the present application are described by taking the latter (the wrapping angles of the first plate body 100 and the second plate body 200 around the rotary stator 20 are both A) as an example. Compared with the solution of using multiple thin gaskets to press the resolver stator, the angle of the pressure plate 10 around the resolver stator 20 in this solution meets the above angle range, that is, it can effectively increase the contact area between the pressure plate 10 and the resolver stator 20, and ensure the stability of the pressure plate 10 pressing the resolver stator 20. When A is 270°, that is, the pressure plate 10 does not surround the entire periphery of the resolver stator 20, refer to Figure 6 That is, the pressure plate 10 is also provided with a notch. By providing the notch, the material of the pressure plate 10 can be saved, and space can be reserved for the outgoing wires of the rotary transformer stator 20, thereby reducing the situation where the wires are squeezed and thus worn.

[0072] Reference Figure 4 The following describes the specific configuration of the pressure plate 10 to limit the movement of the rotary stator 20 along its radial direction X. First, the specific structure of the rotary stator 20 is described. Figure 5 The flange 202 of the resolver stator 20 is located on the first peripheral wall 201 of the resolver stator 20, and the flange 202 has a second peripheral wall 2022 away from the first peripheral wall 201. It can be understood that the first peripheral wall 201 and the second peripheral wall 2022 are spaced apart.

[0073] Reference Fig.10In some embodiments, the first plate 100 may abut against the first peripheral wall 201, that is, it can limit the movement of the rotary stator 20 along its radial direction X. The second plate 200 may be spaced apart from the second peripheral wall 2022. Figure 7 In other embodiments, the first plate 100 may be spaced apart from the first peripheral wall 201, and the second plate 200 may abut against the second peripheral wall 2022, so as to limit the movement of the rotary stator 20 along its radial direction X. Figure 4 In other embodiments, the first plate body 100 can abut the first outer peripheral wall 201, and the second plate body 200 can abut the second outer peripheral wall 2022, that is, it can limit the radial X movement of the rotary stator 20. This solution can ensure the stability of the radial X limitation of the rotary stator 20 by the pressure plate 10.

[0074] Reference Figure 4 , Fig.10 and Fig.11 The specific connection arrangement between the pressure plate 10 and the rotary stator 20 is described below. Figure 4 In some embodiments, the first plate body 100 of the pressure plate 10 may directly abut against the flange 202 of the rotary stator 20. In other embodiments, the first plate body 100 may also be clamped with the flange 202. Fig.10 , the side wall of the first plate 100 close to the flange 202 may be provided with a first groove 110, and the end wall 2021 of the flange 202 may be provided with a first protrusion 2023, and the first protrusion 2023 is adapted to the arrangement of the first groove 110. Along the axial direction Z of the rotary stator 20, the first protrusion 2023 may penetrate the first groove 110. It can be understood that both the first protrusion 2023 and the first groove 110 may be provided in plurality, and the specific number of settings may be determined according to actual conditions. In this solution, the first protrusion 2023 penetrates the first groove 110, which can effectively improve the stability of the assembly connection between the first plate 100 and the flange 202.

[0075] In other embodiments, reference Fig.11, the side wall of the first plate body 100 close to the flange 202 may be provided with a second protrusion 120, the end wall 2021 of the flange 202 may be provided with a second groove 2024, and the second protrusion 120 is adapted to the arrangement of the second groove 2024. Along the axial direction Z of the rotary stator 20, the second protrusion 120 may penetrate the second groove 2024. Similarly, a plurality of second protrusions 120 and second grooves 2024 may be provided, and the specific number of settings may be determined according to actual conditions. In this solution, the second protrusion 120 penetrates the second groove 2024, which can effectively improve the stability of the assembly connection between the first plate body 100 and the flange 202. It should be noted that the first plate body 100 may also be provided with the first groove 110 and the second protrusion 120 at the same time, and the flange 202 of the rotary stator 20 may be provided with the second groove 2024 and the second protrusion 120. Along the axial direction Z of the resolver stator 20 , the first protrusion 2023 passes through the first groove 110 and the second protrusion 120 passes through the second groove 2024 .

[0076] In some embodiments, after the pressure plate 10 of the motor 1 is connected to the resolver stator 20 and the end cover 30, the resolver stator 20 needs to rotate along its circumferential direction. In other embodiments, after the pressure plate 10 of the motor 1 is connected to the resolver stator 20 and the end cover 30, the resolver stator 20 cannot rotate along its circumferential direction to avoid disturbing the zero position of the motor 1. Therefore, it is necessary to add a limit structure to limit the resolver stator 20. Fig.12 and Fig.13 The limiting structure of this embodiment is introduced.

[0077] First, the specific structure of the rotary stator 20 is introduced. Figure 5 The flange 202 of the resolver stator 20 is located on the first peripheral wall 201 of the resolver stator 20, and the flange 202 has a second peripheral wall 2022 away from the first peripheral wall 201. It can be understood that the first peripheral wall 201 and the second peripheral wall 2022 are spaced apart.

[0078] The following describes the specific settings of the limit structure. Fig.12In some embodiments, the inner circumferential wall 400 of the pressure plate 10 is provided with a third protrusion 410. Specifically, the third protrusion 410 can be provided on the inner circumferential wall 400 of the first plate body 100. The first outer circumferential wall 201 is provided with a third groove 2011. Along the radial direction X of the rotary stator 20, the third protrusion 410 can penetrate the third groove 2011 of the first outer circumferential wall 201. It should be noted that the third groove 2011 can be extended along the axial direction Z of the rotary stator 20, and the specific extension length can be determined according to actual conditions. The pressure plate 10 can be sleeved on the outer periphery of the rotary stator 20 along the axial direction Z. In this solution, the third protrusion 410 penetrates the third groove 2011 along the radial direction X of the rotary stator 20, and because the pressure plate 10 is fixedly connected to the end cover 30, this solution can effectively inhibit the rotary stator 20 from rotating relative to the end cover 30 along its circumferential direction, thereby ensuring the stability of the assembly connection of the rotary stator 20.

[0079] Reference Fig.13 In some embodiments, the inner circumferential wall 400 of the pressure plate 10 is provided with a fourth protrusion 420. Specifically, the fourth protrusion 420 can be provided on the inner circumferential wall 400 of the second plate body 200. The second outer circumferential wall 2022 is provided with a fourth groove 2025. Along the radial direction X of the rotary stator 20, the fourth protrusion 420 of the pressure plate 10 penetrates the fourth groove 2025 of the second outer circumferential wall 2022. It can be understood that the fourth groove 2025 can penetrate the flange 202 along the axial direction Z of the rotary stator 20, and the pressure plate 10 can be sleeved on the outer periphery of the rotary stator 20 along the axial direction Z. In this solution, the fourth protrusion 420 penetrates the fourth groove 2025 along the radial direction X of the rotary stator 20, and because the pressure plate 10 is fixedly connected to the end cover 30, this solution can effectively inhibit the rotary stator 20 from rotating relative to the end cover 30 along its circumferential direction, thereby ensuring the stability of the assembly connection of the rotary stator 20.

[0080] It should be noted that in other embodiments, the inner peripheral wall 400 of the pressure plate 10 may be provided with the third protrusion 410 and the fourth protrusion 420 at the same time, and the first outer peripheral wall 201 is provided with the third groove 2011, and the second outer peripheral wall 2022 is provided with the fourth groove 2025. Along the radial direction X of the rotary stator 20, the third protrusion 410 is provided with the third groove 2011, and the fourth protrusion 420 is provided with the fourth groove 2025. This solution can further improve the stability of the assembly connection of the rotary stator 20.

[0081] The connection arrangement between the pressing plate 10 and the end cover 30 is described below. Fig.12In some embodiments, along the axial direction Z of the resolver stator 20, the pressure plate 10 includes a bottom wall 500 close to the end cover 30. The bottom wall 500 of the pressure plate 10 is spaced apart from the end cover 30. Since the first plate body 100 abuts against the end wall 2021 of the flange 202, the pressure from the connector 40 applied to the pressure plate 10 can be directly transmitted to the flange 202, so that the flange 202 can more stably press against the end cover 30, thereby ensuring the stability of the connection between the resolver stator 20 and the end cover 30. Fig.13 In other embodiments, along the axial direction Z of the resolver stator 20, the pressing plate 10 includes a bottom wall 500 close to the end cover 30. The bottom wall 500 of the pressing plate 10 can abut against the end cover 30, and because the pressing plate 10 also abuts against the end wall 2021 of the flange 202, both the end cover 30 and the flange 202 are subjected to the pressure of the pressing plate 10, that is, it can prevent the pressing plate 10 from falling off relative to the flange 202 or tilting when the connector 40 presses the pressing plate 10.

[0082] The second aspect of the utility model provides a motor 1, which includes the pressure plate 10 of the above-mentioned embodiment, and also includes a rotary stator 20, an end cover 30 and a connector 40. The connector 40 connects the pressure plate 10 and the end cover 30, and the connector 40 can press the rotary stator 20 to the end cover 30. The connector 40 can be a screw. In this solution, the first plate body 100 is arranged around the rotary stator 20, and the first plate body 100 abuts against the end wall 2021 of the flange 202 away from the end cover 30, which can limit the rotary stator 20 from moving along its axial direction Z. The second plate body 200 is arranged around the flange 202 and connected to the first plate body 100, which can limit the rotary stator 20 from moving significantly along its radial direction X. Therefore, the pressure plate 10 of the present solution can stably press the resolver stator 20 to the end cover 30, effectively suppressing the movement of the resolver stator 20 along its radial X or axial Z direction, improving the stability of the connection between the resolver stator 20 and the end cover 30, and ensuring that the motor 1 can continue to operate normally.

[0083] Reference Figure 5 , the specific setting of the flange 202 of the rotary stator 20 is introduced below. In some embodiments, the flange 202 is located on the first peripheral wall 201 of the rotary stator 20, and the flange 202 is in a ring shape arranged around the first peripheral wall 201. This solution can ensure the structural strength of the flange 202, so that the pressure plate 10 can more reliably press the flange 202 to the end cover 30. In other embodiments, a plurality of flanges 202 may be provided, and the plurality of flanges 202 are arranged at intervals around the first peripheral wall 201 of the rotary stator 20. Furthermore, the intervals between the plurality of flanges 202 may be uniform intervals. This solution can save the material of the rotary stator 20 and reduce the cost.

[0084] Reference Figure 4, the connection arrangement between the end cover 30 and the resolver stator 20 is described below. In some embodiments, along the axial direction Z of the resolver stator 20, the end cover 30 has a top wall 301 facing the resolver stator 20. The flange 202 of the resolver stator 20 abuts against the top wall 301 of the end cover 30, which can effectively prevent the resolver stator 20 from shaking relative to the end cover 30, thereby ensuring the stability of the connection between the resolver stator 20 and the end cover 30.

[0085] Reference Figure 2 and Figure 3 , the specific structure of the end cover 30 is introduced below. In some embodiments, the top wall 301 of the end cover 30 is provided with a mounting hole 3011, and the mounting hole 3011 can accommodate the resolver stator 20. Among them, the axis of the mounting hole 3011 coincides with the axis of the resolver stator 20. Along the axial direction Z of the resolver stator 20, the resolver stator 20 is at least partially penetrated by the mounting hole 3011, and the specific penetration length of the resolver stator 20 can be determined according to actual conditions. In this solution, the resolver stator 20 is penetrated by the mounting hole 3011, that is, the side wall of the mounting hole 3011 of the end cover 30 can provide a limit for the resolver stator 20, that is, it can effectively improve the stability of the assembly connection between the resolver stator 20 and the end cover 30, and ensure the assembly accuracy.

[0086] Reference Fig.13 In some embodiments, along the axial direction Z of the resolver stator 20, the end cover 30 has a top wall 301 facing the resolver stator 20. The top wall 301 is provided with a fifth groove 3012. It can be understood that the fifth groove 3012 can be arranged around the mounting hole 3011. Along the axial direction Z of the resolver stator 20, the flange 202 is at least partially accommodated in the fifth groove 3012. This solution can further improve the stability of the assembly connection between the resolver stator 20 and the end cover 30.

[0087] The third aspect of the present invention provides a servo assembly, which includes the motor 1 of the above embodiment, and the motor 1 can provide power for the servo assembly. This solution can ensure the stability of the servo assembly.

[0088] The fourth aspect of the present invention provides an industrial robot, which includes a servo assembly of the above embodiment, and the servo assembly can control the movement process of the industrial robot. This solution can ensure the working stability of the industrial robot.

[0089] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0090] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0091] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A pressure plate, used to connect the resolver stator and end cover of the motor, characterized in that: The outer periphery of the rotary stator is provided with a flange, and the pressure plate comprises: A first plate body is arranged around the resolver stator, the first plate body abutting against an end wall of the flange facing away from the end cover; A second plate body, arranged around the flange and connected to the first plate body, the second plate body being located between the first plate body and the end cover; Wherein, the pressing plate is suitable for pressing the resolver stator onto the end cover.

2. The pressing plate according to claim 1, characterized in that The first plate body and the second plate body are arranged integrally, the pressure plate includes at least two connecting holes, each of the connecting holes penetrates the first plate body and the second plate body along the axial direction of the rotary stator, and the connecting holes are suitable for connecting members to pass through to connect the end cover.

3. The pressing plate according to claim 2, characterized in that The surrounding angle A of the pressure plate around the resolver stator satisfies: 180°<A≤360°.

4. The pressing plate according to claim 1, characterized in that The flange is located on a first outer peripheral wall of the resolver stator, and the flange has a second outer peripheral wall facing away from the first outer peripheral wall; The first plate body is suitable for abutting the first outer peripheral wall, and the second plate body is spaced apart from the second outer peripheral wall; or, the first plate body is spaced apart from the first outer peripheral wall, and the second plate body is suitable for abutting the second outer peripheral wall; or, the first plate body is suitable for abutting the first outer peripheral wall, and the second plate body is suitable for abutting the second outer peripheral wall.

5. The pressing plate according to claim 1, characterized in that The first plate body is provided with a first groove, and along the axial direction of the resolver stator, the first groove is suitable for the first protrusion of the end wall to pass through; and / or, The first plate body is provided with a second protrusion, and along the axial direction of the resolver stator, the second protrusion is suitable for penetrating the second groove of the end wall.

6. The pressing plate according to claim 1, characterized in that The flange is located on a first peripheral wall of the resolver stator, the flange has a second peripheral wall facing away from the first peripheral wall, and, The inner peripheral wall of the pressure plate is provided with a third protrusion, and along the radial direction of the rotary stator, the third protrusion is suitable for penetrating the third groove of the first outer peripheral wall; and / or, The inner peripheral wall of the pressure plate is provided with a fourth protrusion, and along the radial direction of the rotary stator, the fourth protrusion is suitable for penetrating the fourth groove of the second outer peripheral wall.

7. The pressing plate according to claim 1, characterized in that Along the axial direction of the resolver stator, the pressure plate includes a bottom wall close to the end cover, and the bottom wall abuts against the end cover; or, Along the axial direction of the resolver stator, the pressure plate includes a bottom wall close to the end cover, and the bottom wall is spaced apart from the end cover.

8. A motor, characterized in that It comprises the pressure plate as described in any one of claims 1 to 7, and also comprises the rotary stator, the end cover and a connecting piece, wherein the connecting piece connects the pressure plate and the end cover, and the connecting piece can press the rotary stator to the end cover.

9. The motor according to claim 8, characterized in that The flange is located on the first outer peripheral wall of the resolver stator, and the flange is in a ring shape arranged around the first outer peripheral wall.

10. The motor according to claim 8, characterized in that Along the axial direction of the resolver stator, the end cover has a top wall facing the resolver stator, and the flange abuts against the top wall.

11. The motor according to claim 10, characterized in that The top wall is provided with a mounting hole, the axis of the mounting hole coincides with the axis of the resolver stator, and along the axial direction of the resolver stator, the resolver stator is at least partially penetrated by the mounting hole.

12. The motor according to claim 8, characterized in that Along the axial direction of the resolver stator, the end cover has a top wall facing the resolver stator, the top wall is provided with a fifth groove, and along the axial direction of the resolver stator, the flange is at least partially accommodated in the fifth groove.

13. A servo assembly, characterized in that Comprising a motor as described in any one of claims 8-12.

14. An industrial robot, characterized in that Comprising the servo assembly as claimed in claim 13.

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