Rotary transformer stator assembly of driving motor and driving motor

Abstract

The utility model discloses a rotary transformer stator assembly of a driving motor and the driving motor, the rotary transformer stator assembly is characterized in that an end cover forms an installation space, at least part of a rotary transformer stator is installed in the installation space, and the peripheral wall of the rotary transformer stator is provided with a first assembly groove extending along the axial direction of the rotary transformer stator; the pressing plate is located on the side, away from the end cover, of the stop gasket and fixedly connected with the end cover, the pressing plate is provided with a second assembly groove extending in the axial direction of the rotary transformer stator, the stop gasket is provided with a first limiting lug and a second limiting lug, the first limiting lug and the second limiting lug are bent towards the two sides of the stop gasket respectively, the first limiting lug is assembled in the first assembly groove, and the second limiting lug is assembled in the second assembly groove. The second limiting lug is assembled in the second assembling groove. Therefore, the rotary transformer stator and the pressing plate are bound together through the first limiting lug and the second limiting lug of the locking gasket, relative rotation of the rotary transformer stator and the pressing plate can be avoided, it is guaranteed that the rotary transformer stator is fixed firmly, the electrical angle is constant, and then the safety and reliability of the driving motor are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drive motors, in particular to a rotary transformer stator component of a drive motor and a drive motor having the rotary transformer stator component. Background Art

[0002] In the related technology, there are processing errors and assembly errors in the components of the drive motor. Positioning according to the theoretically calculated installation angle will deviate from the required electrical angle value. Therefore, when installing the resolver stator, it is also necessary to adjust it in the circumferential direction to achieve the specified electrical angle. The existing resolver stator is fixed and prevented from loosening by the friction force generated by the pressure plate. However, during the use of the vehicle, the vibration impact exerted on the drive motor will cause the resolver stator to loosen, resulting in inaccurate control of the drive motor and posing a safety hazard. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a resolver stator assembly of a drive motor, which can prevent the resolver stator and the pressure plate from rotating relative to each other, thereby ensuring that the resolver stator is firmly fixed and the electrical angle is constant, thereby improving the safety and reliability of the drive motor.

[0004] The utility model further proposes a driving motor having the above-mentioned rotary transformer stator assembly.

[0005] According to an embodiment of the utility model, the resolver stator assembly of the driving motor includes: an end cover and a resolver stator, the end cover is formed with an installation space, at least part of the resolver stator is installed in the installation space, the outer peripheral wall of the resolver stator has a first assembly groove extending along the axial direction of the resolver stator; a stacked pressure plate and a stop gasket, the pressure plate is located on the side of the stop gasket away from the end cover and is fixedly connected to the end cover, the pressure plate has a second assembly groove extending along the axial direction of the resolver stator, the stop gasket has a first limiting ear and a second limiting ear, the first limiting ear and the second limiting ear are respectively bent toward the two sides of the stop gasket, the first limiting ear is assembled in the first assembly groove, and the second limiting ear is assembled in the second assembly groove.

[0006] According to the embodiment of the utility model, the resolver stator assembly of the driving motor can avoid relative rotation between the resolver stator and the pressure plate by stacking the pressure plate and the stop gasket, and binding the resolver stator and the pressure plate together with the first limit ear and the second limit ear of the stop gasket, thereby ensuring that the resolver stator is firmly fixed and the electrical angle is constant, thereby improving the safety and reliability of the driving motor.

[0007] According to some embodiments of the present invention, the width dimension of the first assembly groove is equal to the width dimension of the first limiting ear.

[0008] According to some embodiments of the present invention, a width dimension of the second assembly groove is greater than a width dimension of the second limiting ear.

[0009] According to some embodiments of the present invention, the second limiting ear is inserted into the second assembly groove, and the second limiting ear is suitable for bending and abutting against a surface of the pressure plate facing away from the stop gasket.

[0010] According to some embodiments of the utility model, the stop gasket is arc-shaped, and has an inner edge and an outer edge. The first limiting ear is arranged on the inner edge, and the second limiting ear is arranged on the outer edge.

[0011] According to some embodiments of the present invention, there are multiple second limiting ears, and the multiple second limiting ears are arranged along the circumference of the stopping gasket.

[0012] According to some embodiments of the present invention, the second assembly groove is formed on the outer peripheral wall of the pressing plate.

[0013] According to some embodiments of the utility model, the end cover has a first assembly hole, the pressure plate has a second assembly hole, and the stop gasket has a third assembly hole. The first assembly hole, the second assembly hole and the third assembly hole are arranged correspondingly, and the third assembly hole is a strip hole. The third assembly hole extends circumferentially along the rotating stator.

[0014] According to some embodiments of the present invention, there are multiple first assembly holes, multiple second assembly holes, and multiple third assembly holes, and the first assembly holes, the second assembly holes, and the third assembly holes are arranged in a one-to-one correspondence.

[0015] The driving motor according to the embodiment of the utility model comprises the rotary transformer stator assembly of the driving motor of the above embodiment.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is an exploded schematic diagram of a resolver stator assembly according to an embodiment of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the second limiting ear of the resolver stator assembly of the embodiment of the utility model when it is not bent;

[0020] Figure 3 This is a schematic diagram of the structure of the second limiting ear of the resolver stator assembly after bending in an embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of a stop gasket according to an embodiment of the utility model.

[0022] Reference numerals:

[0023] Resolver stator assembly 100;

[0024] End cover 10; installation space 11; first assembly hole 12;

[0025] Rotary stator 20; first assembly slot 21;

[0026] Pressing plate 30; second assembly groove 31; second assembly hole 32;

[0027] Stop gasket 40; first limiting ear 41; second limiting ear 42; third assembly hole 43;

[0028] Fastener 50. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] Reference below Figure 1-Figure 4 The resolver stator assembly 100 of the drive motor and the drive motor according to the embodiment of the utility model are described. The resolver stator assembly 100 comprises: an end cover 10 and a resolver stator 20, the end cover 10 is formed with an installation space 11, at least part of the resolver stator 20 is installed in the installation space 11, the outer peripheral wall of the resolver stator 20 has a first assembly groove 21 extending along the axial direction of the resolver stator 20; a stacked pressure plate 30 and a stop gasket 40, the pressure plate 30 is located on the side of the stop gasket 40 away from the end cover 10 and is fixedly connected to the end cover 10, the pressure plate 30 has a second assembly groove 31 extending along the axial direction of the resolver stator 20, the stop gasket 40 has a first limiting ear 41 and a second limiting ear 42, the first limiting ear 41 and the second limiting ear 42 are bent toward the two sides of the stop gasket 40 respectively, the first limiting ear 41 is assembled in the first assembly groove 21, and the second limiting ear 42 is assembled in the second assembly groove 31.

[0031] Among them, the end cover 10 can form an installation space 11, and the shape of the installation space 11 can be adapted to the shape of the resolver stator 20, so as to facilitate at least part of the resolver stator 20 to be installed in the installation space 11, for example: half of the resolver stator 20 is installed in the installation space 11, or one third of the resolver stator 20 is installed in the installation space 11, but the utility model is not limited to this, and the resolver stator 20 can also be installed in the installation space 11 as long as at least part of the resolver stator 20 is installed in the installation space 11.

[0032] The pressure plate 30 and the stop gasket 40 can be stacked, the pressure plate 30 can be located on the side of the stop gasket 40 away from the end cover 10, and the pressure plate 30 is fixedly connected to the end cover 10, for example: the pressure plate 30 and the end cover 10 can be fixedly connected by bolts, or the pressure plate 30 and the end cover 10 can also be fixedly connected by clamping, but the utility model is not limited to this, the pressure plate 30 and the end cover 10 can also be fixedly connected by other means, as long as the pressure plate 30 and the end cover 10 are fixedly connected. This application is explained by taking the example that a fastener 50 is simultaneously penetrated through the pressure plate 30 and the stop gasket 40 and connected to the end cover 10. The fastener 50 can be a bolt, a screw, a fixing pin or other fastener 50, which is not specifically limited here, as long as the fastener 50 can fix the pressure plate 30 and the end cover 10.

[0033] The stop washer 40 may have a first limiting ear 41 and a second limiting ear 42, and the outer peripheral wall of the resolver stator 20 may have a first assembly groove 21 extending along the axial direction of the resolver stator 20, and the shape of the first assembly groove 21 may be adapted to the shape of the first limiting ear 41, so that the first limiting ear 41 is assembled in the first assembly groove 21. The pressure plate 30 may have a second assembly groove 31 extending along the axial direction of the resolver stator 20, and the shape of the second assembly groove 31 may be adapted to the shape of the second limiting ear 42, so that the second limiting ear 42 is assembled in the second assembly groove 31. And the first limiting ear 41 and the second limiting ear 42 are bent toward the two sides of the stop washer 40, respectively. It can be explained that the first limiting ear 41 and the second limiting ear 42 can be assembled in the first assembly groove 21 and the second assembly groove 31 by plugging, respectively.

[0034] Specifically, the first limiting ear 41 can be bent toward the side of the stop gasket 40 close to the resolver stator 20 and inserted into the first assembly groove 21 to press the resolver stator 20. The second limiting ear 42 can be bent toward the side of the stop gasket 40 close to the pressure plate 30 and inserted into the second assembly groove 31 to press the pressure plate 30. After the second limiting ear 42 is inserted into the second assembly groove 31, it can be bent and abut against the surface of the pressure plate 30 away from the stop gasket 40, so that the first limiting ear 41 and the second limiting ear 42 bind the resolver stator 20 and the pressure plate 30 together, which can prevent the resolver stator 20 and the pressure plate 30 from relative rotation, thereby ensuring that the resolver stator 20 is firmly fixed and the electrical angle is constant, thereby improving the safety and reliability of the drive motor.

[0035] Further, after the resolver stator 20 is installed in the installation space 11, the stop gasket 40 and the pressure plate 30 are sequentially stacked on the surface of the end cover 10, and the first limiting ear 41 and the second limiting ear 42 of the stop gasket 40 are respectively assembled in the first assembly groove 21 and the second assembly groove 31. After the resolver stator 20 is aligned in the circumferential direction, the end cover 10 and the pressure plate 30 are fixed by the fastener 50, and then the first limiting ear 41 and the second limiting ear 42 of the stop gasket 40 are respectively assembled in the first assembly groove 21 and the second assembly groove 31. An assembly groove 21 and a second assembly groove 31, and then the second limiting ear 42 is bent and pressed against the pressure plate 30, so that the resolver stator 20 and the pressure plate 30 can be bound together, and the fastener 50 and the end cover 10 can cooperate to lock the pressure plate 30. The static friction force generated by the locking force of the pressure plate 30 can fix the resolver stator 20, thereby preventing the resolver stator 20 and the pressure plate 30 from rotating relative to each other, thereby ensuring that the resolver stator 20 is firmly fixed and the electrical angle is constant, thereby improving the safety and reliability of the drive motor.

[0036] According to the embodiment of the utility model, the resolver stator assembly 100 of the driving motor can avoid relative rotation between the resolver stator 20 and the pressing plate 30 by stacking the pressure plate 30 and the stop gasket 40, and binding the resolver stator 20 and the pressure plate 30 together by the first limiting ear 41 and the second limiting ear 42 of the stop gasket 40, thereby ensuring that the resolver stator 20 and the pressure plate 30 are firmly fixed and the electrical angle is constant, thereby improving the safety and reliability of the driving motor.

[0037] According to some embodiments of the present invention, Figure 1As shown, the width dimension of the first assembly groove 21 can be equal to the width dimension of the first limiting ear 41, so as to facilitate the smooth assembly of the first limiting ear 41 in the first assembly groove 21, and the first limiting ear 41 can be bent toward the side of the stop gasket 40 close to the resolver stator 20. Along the circumference of the resolver stator 20, the first assembly groove 21 has two opposite first assembly groove walls. After the first limiting ear 41 is assembled in the first assembly groove 21, the first limiting ear 41 can be limited by the two first assembly groove walls, thereby limiting the circumferential rotation of the resolver stator 20, thereby ensuring that the resolver stator 20 is firmly fixed and the electrical angle is constant, thereby improving the safety and reliability of the drive motor.

[0038] According to some embodiments of the present invention, Figure 1 As shown, the width of the second assembly slot 31 can be greater than the width of the second limiting ear 42, so that the second limiting ear 42 can be smoothly assembled in the second assembly slot 31. In addition, the second limiting ear 42 can be moved to adjust the position of the resolver stator 20. After the position of the resolver stator 20 is adjusted to the right position, the second limiting ear 42 is bent so that the second limiting ear 42 presses the pressing plate 30, so that the pressing plate 30 and the resolver stator 20 are fixed.

[0039] According to some embodiments of the present invention, Figure 3 As shown, the second limiting ear 42 can be inserted into the second assembly groove 31, and the second limiting ear 42 is suitable for bending and abutting against the surface of the pressure plate 30 away from the stop gasket 40, so that the stop gasket 40 locks the pressure plate 30. The static friction force generated by the locking force of the pressure plate 30 can fix the rotary transformer stator 20, and can prevent the rotary transformer stator 20 and the pressure plate 30 from rotating relative to each other, thereby ensuring that the rotary transformer stator 20 is firmly fixed and the electrical angle is constant, thereby improving the safety and reliability of the drive motor.

[0040] According to some embodiments of the present invention, Figure 1 and Figure 4 As shown, the stop washer 40 may be arc-shaped, so that the shape of the stop washer 40 is adapted to the shape of the resolver stator 20. The stop washer 40 has an inner edge and an outer edge, and the first limiting ear 41 may be provided at the inner edge, so that the first limiting ear 41 is arranged corresponding to the position of the first assembly groove 21, so that the first limiting ear 41 can be smoothly assembled in the first assembly groove 21. The second limiting ear 42 may be provided at the outer edge, so that the second limiting ear 42 is arranged corresponding to the position of the second assembly groove 31, so that the second limiting ear 42 can be smoothly assembled in the second assembly groove 31.

[0041] By assembling the first limiting ear 41 in cooperation with the first assembly groove 21, and the second limiting ear 42 in cooperation with the second assembly groove 31, the resolver stator 20 and the pressure plate 30 can be further bound together, and relative rotation between the resolver stator 20 and the pressure plate 30 can be further avoided, thereby further ensuring that the resolver stator 20 is firmly fixed and the electrical angle is constant, thereby improving the safety and reliability of the drive motor.

[0042] According to some embodiments of the present invention, Figure 4 As shown, the second limiting ears 42 can be multiple, for example, there can be two, three, four, etc. second limiting ears 42, but the utility model is not limited thereto, and there can also be other numbers of second limiting ears 42, as long as there are multiple second limiting ears 42. This application takes two second limiting ears 42 as an example for explanation. Multiple second limiting ears 42 can be arranged along the circumference of the stop gasket 40, so that multiple second limiting ears 42 can lock the pressure plate 30 at the same time, and the static friction force generated by the locking force of the pressure plate 30 can fix the resolver stator 20, thereby further preventing the resolver stator 20 from rotating relative to the pressure plate 30, and further ensuring that the resolver stator 20 is firmly fixed and the electrical angle is constant, further improving the safety and reliability of the drive motor.

[0043] According to some embodiments of the present invention, Figure 1 As shown, the outer peripheral wall of the pressure plate 30 may be formed with a second assembly groove 31, and there may be multiple second assembly grooves 31, for example, there may be two, three, four, etc. second assembly grooves 31, but the utility model is not limited thereto, and there may be other numbers of second assembly grooves 31, as long as there are multiple second assembly grooves 31. The present application takes two second assembly grooves 31 as an example for explanation. The two second assembly grooves 31 may be respectively arranged corresponding to the two second limiting ears 42, so that the two second assembly grooves 31 are respectively assembled and bent with the two second limiting ears 42 at the same time, so that the multiple second limiting ears 42 can lock the pressure plate 30 at the same time, and the static friction force generated by the locking force of the pressure plate 30 can fix the rotary stator 20, thereby further preventing the rotary stator 20 and the pressure plate 30 from rotating relative to each other, and further improving the safety and reliability of the drive motor.

[0044] According to some embodiments of the present invention, Figure 1 As shown, the end cover 10 has a first assembly hole 12, the pressure plate 30 has a second assembly hole 32, and the stop gasket 40 has a third assembly hole 43. The first assembly hole 12, the second assembly hole 32 and the third assembly hole 43 are arranged correspondingly, and the third assembly hole 43 is a strip hole, and the third assembly hole 43 extends circumferentially along the rotary transformer stator 20.

[0045] Among them, the first assembly hole 12, the second assembly hole 32, and the third assembly hole 43 can be correspondingly arranged, so that the fastener 50 can simultaneously pass through the first assembly hole 12, the second assembly hole 32, and the third assembly hole 43 to fix and connect the pressure plate 30, the stop washer 40, the resolver stator 20, and the end cover 10. The third assembly hole 43 can be a bar-shaped hole. During assembly, the third assembly hole 43 can be aligned with the first assembly hole 12 and the second assembly hole 32 by adjusting the stop washer 40, thereby eliminating the influence of the manufacturing and assembly errors of the parts of the drive motor on the assembly angle of the resolver stator assembly 100. And the third assembly hole 43 can extend along the circumferential direction of the resolver stator 20, and the stop gasket 40 can be rotated to adjust the position of the resolver stator 20 along the circumferential direction. When adjusting the angle of the resolver stator 20, the third assembly hole 43 is a strip hole, which can avoid the third assembly hole 43 from being misaligned with the first assembly hole 12 and the second assembly hole 32, thereby ensuring that the first assembly hole 12, the second assembly hole 32, and the third assembly hole 43 can be aligned. The fastener 50 simultaneously passes through the first assembly hole 12, the second assembly hole 32, and the third assembly hole 43 to fasten the pressure plate 30, the stop gasket 40, the resolver stator 20, and the end cover 10, thereby achieving the effect of fixing and connecting the pressure plate 30, the stop gasket 40, the resolver stator 20, and the end cover 10.

[0046] According to some embodiments of the present invention, Figure 1 As shown, the first assembly hole 12, the second assembly hole 32 and the third assembly hole 43 can be multiple, for example, there can be two, three, four or the like first assembly holes 12, the second assembly hole 32 and the third assembly hole 43, but the utility model is not limited thereto, and there can be other numbers of first assembly holes 12, the second assembly holes 32 and the third assembly holes 43, as long as the first assembly hole 12, the second assembly hole 32 and the third assembly hole 43 can be multiple. This application is described by taking the example that the first assembly hole 12, the second assembly hole 32 and the third assembly hole 43 can all be three. The first assembly hole 12, the second assembly hole 32 and the third assembly hole 43 are arranged in one-to-one correspondence, thereby further ensuring that the first assembly hole 12, the second assembly hole 32, and the third assembly hole 43 can be aligned one by one, and the fastener 50 simultaneously passes through the first assembly hole 12, the second assembly hole 32, and the third assembly hole 43 to fasten the pressure plate 30, the stop gasket 40, the rotary stator 20, and the end cover 10, thereby further achieving the effect of fixing the pressure plate 30, the stop gasket 40, the rotary stator 20, and the end cover 10.

[0047] The drive motor according to the embodiment of the utility model includes the resolver stator assembly 100 of the drive motor of the above embodiment, which can prevent the resolver stator 20 and the pressure plate 30 from rotating relative to each other, thereby ensuring that the resolver stator 20 is firmly fixed and the electrical angle is constant, thereby improving the safety and reliability of the drive motor.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A resolver stator assembly for a drive motor, characterized in that: include: An end cover and a resolver stator, wherein the end cover is formed with an installation space, at least a portion of the resolver stator is installed in the installation space, and an outer peripheral wall of the resolver stator has a first assembly groove extending along the axial direction of the resolver stator; A stacked pressure plate and a stop gasket, wherein the pressure plate is located on the side of the stop gasket away from the end cover and is fixedly connected to the end cover, the pressure plate has a second assembly groove extending along the axial direction of the rotary stator, and the stop gasket has a first limiting ear and a second limiting ear, the first limiting ear and the second limiting ear are respectively bent toward the two sides of the stop gasket, the first limiting ear is assembled in the first assembly groove, and the second limiting ear is assembled in the second assembly groove.

2. The resolver stator assembly of the drive motor according to claim 1, characterized in that: The width dimension of the first assembly groove is equal to the width dimension of the first limiting ear.

3. The resolver stator assembly of the drive motor according to claim 1, characterized in that: The width of the second assembly groove is greater than the width of the second limiting ear.

4. The resolver stator assembly of the drive motor according to claim 1, characterized in that: The second limiting ear is inserted into the second assembly groove, and the second limiting ear is suitable for bending and abutting against a surface of the pressing plate away from the stop gasket.

5. The resolver stator assembly of the drive motor according to claim 1, characterized in that: The stop washer is arc-shaped and has an inner edge and an outer edge. The first limiting ear is arranged on the inner edge, and the second limiting ear is arranged on the outer edge.

6. The resolver stator assembly of the drive motor according to claim 1, characterized in that: There are a plurality of the second limiting ears, and the plurality of the second limiting ears are arranged along the circumferential direction of the stopping gasket.

7. The resolver stator assembly of the drive motor according to claim 1, characterized in that: The second assembly groove is formed on the outer peripheral wall of the pressing plate.

8. The resolver stator assembly of a drive motor according to any one of claims 1 to 7, characterized in that: The end cover has a first assembly hole, the pressure plate has a second assembly hole, and the stop gasket has a third assembly hole. The first assembly hole, the second assembly hole and the third assembly hole are correspondingly arranged, and the third assembly hole is a strip hole, and the third assembly hole extends along the circumference of the rotary transformer stator.

9. The resolver stator assembly of the drive motor according to claim 8, characterized in that: There are multiple first assembly holes, multiple second assembly holes, and multiple third assembly holes, and the first assembly holes, the second assembly holes, and the third assembly holes are arranged in a one-to-one correspondence.

10. A driving motor, characterized in that: A resolver stator assembly comprising a drive motor according to any one of claims 1-9.

Images