Encoder connecting structure of motor and motor

Abstract

The utility model provides an encoder connecting structure of a motor and the motor. The encoder connecting structure comprises a rotating shaft sleeve, a limiting sleeve and a ball. The rotating shaft sleeve comprises an annular base plate used for being fixedly connected with the encoder and an annular connecting base protruding from the center of the annular base plate, and a connecting through hole used for containing a motor rotating shaft is formed in the connecting base in the axial direction of the connecting base. A first mounting hole is formed in the side wall of the connecting seat in a penetrating manner, and the position of the first mounting hole corresponds to that of a second mounting hole in a motor rotating shaft; the balls are detachably embedded into the first mounting holes and the second mounting holes; the limiting sleeve is detachably arranged outside the connecting base in a sleeving mode and clamps the ball together with the motor rotating shaft, so that at least part of the ball is located in the first mounting hole, and part of the ball is located in the second mounting hole. The encoder connecting structure of the motor provided by the utility model ensures the stability of the connection between the motor rotating shaft and the annular substrate, and is simple and convenient to mount and dismount.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and in particular relates to an encoder connection structure of a motor and a motor. Background Art

[0002] When the fixed shaft and the annular base are connected to each other, at least two screw mounting holes are usually opened on the annular base and the fixed shaft, and each screw is inserted into the screw mounting hole on the annular base and the fixed shaft. However, due to the small size of the screw, the screw mounting control is limited. When installing the screw, a certain torque is required to damage the local surface of the fixed shaft. When embedding the screw into the fixed shaft, the strength between the fixed shaft and the screw must be considered, and the operation is laborious. The space for installing the screw is limited, and it is inevitable that the screw installation effect is not good and needs to be repeatedly installed or falls during installation. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies in the prior art and to provide a motor encoder connection structure that ensures the stability of the connection between the motor shaft and the annular substrate and simplifies the installation and disassembly process.

[0004] The utility model is realized by the following technical solutions:

[0005] A motor encoder connection structure comprises a shaft sleeve, a limit sleeve and a ball; the shaft sleeve comprises an annular base plate for fixedly connecting with the encoder and an annular connecting seat protruding from the center of the annular base plate, the connecting seat is provided with a connecting through hole for accommodating the motor shaft along its axial direction; a first mounting hole is provided through the side wall of the connecting seat, the position of the first mounting hole corresponds to the second mounting hole on the motor shaft; the ball is detachably embedded in the first mounting hole and the second mounting hole; the limit sleeve is detachably sleeved on the outside of the connecting seat, and clamps the ball together with the motor shaft, so that the ball is at least partially located in the first mounting hole and partially located in the second mounting hole.

[0006] In the encoder connection structure of the motor provided by the utility model, the ball is embedded in the first mounting hole of the connection seat and the second mounting hole of the motor shaft to limit the axial rotation of the motor shaft, thereby connecting the motor shaft to the connection seat, and at the same time, the limit sleeve and the motor shaft jointly clamp the ball to jointly limit the movement of the ball. When the motor shaft needs to be removed, the limit sleeve is removed and the ball is taken out to release the restriction between the motor shaft and the connection seat, and the operation is simple. The encoder connection structure of the motor provided by the utility model ensures the stability of the connection between the motor shaft and the annular substrate, and is easy to install and disassemble.

[0007] Furthermore, the outer diameter of the upper part of the connection seat gradually decreases along the direction in which the motor shaft is inserted, the inner diameter of the limit sleeve gradually increases along the direction in which the motor shaft is inserted, and the limit sleeve is connected in cooperation with the upper part of the connection seat; the first mounting hole is arranged in the upper part of the connection seat. The outer diameter of the upper part of the connection seat gradually decreases along the direction in which the motor shaft is inserted, thereby forming a first inclined side wall, and the first mounting hole is arranged on the first inclined side wall; the inner diameter of the limit sleeve gradually increases along the direction in which the motor shaft is inserted, thereby forming a limited inclined surface, and the limit sleeve is connected in cooperation with the upper part of the connection seat, so that the first inclined side wall fits with the limited inclined surface to form a clamp for the ball, thereby pressing the ball during installation and subsequent use, so that the ball is embedded in the first mounting hole and the second mounting hole and ensures that it is embedded in place.

[0008] Furthermore, the first mounting hole is tapered, and the inner diameter gradually decreases in the direction toward the motor shaft. The first mounting hole is adapted to the shape of the ball, so that the ball is firmly connected to the connecting seat and the motor shaft.

[0009] Furthermore, the number of the first mounting holes is at least two, and the at least two first mounting holes are symmetrically arranged along the center of the connecting seat; the number and position of the second mounting holes and the balls correspond to the number and position of the first mounting holes. At least two symmetrically arranged balls are arranged to firmly connect the connecting seat to the motor shaft.

[0010] Furthermore, the inner side of the limiting sleeve is provided with an internal thread, the outer surface of the connecting seat is provided with an external thread, and the internal thread of the limiting sleeve is connected with the external thread of the connecting seat. The limiting sleeve is detachably sleeved on the connecting seat through threaded connection, which is convenient for disassembly and installation.

[0011] Furthermore, the limiting sleeve includes a mounting sleeve, a pressure plate and a spring;

[0012] The connection seat is passed through the mounting sleeve, and the mounting sleeve is provided with an inclined portion, which is protrudingly provided on the inner side wall of the mounting sleeve, and the distance between the inclined portion and the connection seat increases in the direction toward the annular substrate; the pressing plate is fixed to the side of the connection seat away from the annular substrate; one end of the spring is fixed to the inclined portion, and the other end is installed on the pressing plate, and the spring is in a compressed state under the action of the pressing plate. The pressing plate compresses the spring, so that the spring is in a compressed state, and the inclined portion is subjected to downward pressure from the spring, so that the bottom surface of the mounting sleeve is closely fitted with the annular substrate, thereby ensuring the stability of the connection of the mounting sleeve, so that the ball can be stably embedded in the first mounting hole and the second mounting hole.

[0013] Furthermore, the distance between the lower part of the mounting sleeve and the connecting seat gradually increases in the direction toward the annular substrate, and the lower part of the connecting seat gradually increases in the direction toward the annular substrate. The bottom surface of the mounting sleeve abuts against the annular substrate, and the lower part of the mounting sleeve fits with the lower part of the connecting seat, which exerts a compressive effect on the ball bearing, so that the motor shaft and the base are connected and tightened.

[0014] Furthermore, a horizontal abutting surface is provided at the bottom of the inclined portion, and the horizontal abutting surface abuts against the annular base plate. The horizontal abutting surface and the annular base plate are closely fitted and abutted under the action of the spring force, thereby ensuring the stability of the connection of the installation sleeve.

[0015] The utility model also provides a motor, which includes a rotating structure, a motor shaft, an encoder and the encoder connecting structure of the above-mentioned motor; the annular substrate of the encoder connecting structure of the motor is installed on the encoder, and the annular substrate is electrically connected to the encoder; the rotating structure includes a rotor, the motor shaft is fixedly connected to the rotor, the motor shaft is provided with a second mounting hole corresponding to the position of the first mounting hole, the motor shaft is passed through the annular substrate, and the ball is embedded in the first mounting hole and the second mounting hole.

[0016] In the motor provided by the utility model, the motor shaft is connected to the rotor of the motor, and the motor shaft is passed through and fixed in the annular substrate, so that the annular substrate and the rotating structure can rotate synchronously, so that the position signal of the annular substrate is transmitted to the encoder, and the encoder determines and controls the rotation of the motor.

[0017] Furthermore, the second mounting hole is arc-shaped and is used to fit with the ball.

[0018] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the annular substrate and the connecting seat.

[0020] Figure 2 This is a schematic diagram of the encoder connection structure of the motor.

[0021] Figure 3 yes Figure 2 Cross-sectional view along the AA direction.

[0022] Figure 4 It is a schematic diagram of the connection between the encoder connection structure of the motor of Example 1 and the motor shaft.

[0023] Figure 5 It is an exploded view of the limiting sleeve of Example 2.

[0024] Figure 6 It is a schematic diagram of the connection between the limiting sleeve, the annular base plate and the connecting seat in Example 2.

[0025] Figure 7 It is a schematic diagram of the lifting process of the limiting sleeve in Example 2.

[0026] Figure 8 It is a schematic diagram of the completion of lifting of the limiting sleeve of Example 2. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the embodiments of the utility model in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the embodiments of the utility model, rather than to limit the embodiments of the utility model. It should also be noted that, for ease of description, only parts related to the embodiments of the utility model are shown in the accompanying drawings, rather than all structures.

[0028] In addition, the terms first, second, third, etc. in the specification and claims are only used for the purpose of describing the same technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, nor necessarily describing the order or time sequence. The terms are interchangeable where appropriate. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0029] Similarly, the terms "fixed" and "connected" used in the specification and claims should not be construed as limited to direct connection. Therefore, the expression "device A is connected to device B" should not be limited to a device or system in which device A is directly connected to device B, but means that there is a path between device A and device B, which may be a path including other devices or tools.

[0030] Example 1

[0031] This embodiment provides an encoder connection structure for a motor. Figure 1 It is a schematic diagram of the structure of the annular substrate and the connecting seat. Figure 2 This is a schematic diagram of the motor encoder connection structure. Figure 3 yes Figure 2 Cross-sectional view along AA direction, Figure 4 This is a schematic diagram of the connection between the motor encoder connection structure and the motor shaft. Please refer to Figure 1-4 The encoder connection structure of the motor includes a rotating shaft sleeve, a limit sleeve 3 and a ball 4 for fixedly connecting with the encoder;

[0032] The shaft sleeve includes an annular base plate 1 for fixing the encoder and an annular connecting seat 5 protruding from the center of the annular base plate 1. The connecting seat 5 is provided with a connecting through hole 51 for accommodating the motor shaft 2 along its axial direction.

[0033] A first mounting hole 52 is formed through the side wall of the connecting seat 5, and the position of the first mounting hole 52 corresponds to the second mounting hole 21 on the motor shaft 2;

[0034] The limiting sleeve 3 is detachably mounted on the outside of the connecting seat 5, and clamps the ball 4 together with the motor shaft 2, so that at least part of the ball 4 is located in the first mounting hole 52, and part of the ball 4 is located in the second mounting hole 21, and is detachably embedded in the first mounting hole 52 and the second mounting hole 21;

[0035] The ball 4 abuts against the inner wall of the limiting sleeve 3 , and the limiting sleeve 3 limits the ball 4 .

[0036] In the encoder connection structure of the motor provided in this embodiment, the ball 4 is embedded in the first mounting hole 52 of the connecting seat 5 and the second mounting hole 21 of the motor shaft 2 to limit the axial rotation of the motor shaft 2, thereby connecting the motor shaft 2 to the connecting seat 5. At the same time, the limiting sleeve 3 and the motor shaft 2 clamp the ball together to jointly limit the movement of the ball 4. When the motor shaft 2 needs to be removed, the limiting sleeve 3 is removed and the ball 4 is taken out to release the restriction between the motor shaft 2 and the connecting seat 5, and the operation is simple. The encoder connection structure of the motor provided in this embodiment ensures the stability of the connection between the motor shaft 2 and the annular substrate 1, and is easy to install and disassemble.

[0037] See also Figure 1-4 In this embodiment, the inner side wall of the limiting sleeve 3 abuts against the outer surface of the connecting seat 5, so that the ball 4 abuts against the inner side wall of the limiting sleeve 3. The inner side wall of the limiting sleeve 3 abuts against the outer surface of the connecting seat 5, limiting the radial movement of the ball 4 in the connecting seat 5, so that the connecting seat 5 and the motor shaft 2 are firmly connected.

[0038] See also Figure 1-4 In this embodiment, the outer diameter of the upper part of the connection seat 5 gradually decreases along the direction in which the motor shaft 2 is inserted, and the inner diameter of the limiting sleeve 3 gradually increases along the direction in which the motor shaft 2 is inserted, and the limiting sleeve 3 is matched and connected with the upper part of the connection seat 5; the first mounting hole 52 is provided in the upper part of the connection seat 5. The outer diameter of the upper part of the connection seat 5 gradually decreases along the direction in which the motor shaft 2 is inserted, thereby forming a first inclined side wall 53, and the first mounting hole 52 is provided on the first inclined side wall 53; the inner diameter of the limiting sleeve 3 gradually increases along the direction in which the motor shaft 2 is inserted, thereby forming a limiting inclined surface 3111, forming a clamp for the ball 4, thereby pressing the ball 4 during installation and subsequent use, and the first inclined side wall 53 and the limiting inclined surface 3111 are matched and installed and abutted, so that the ball 4 is embedded in the first mounting hole and the second mounting hole 21 and ensures that it is embedded in place.

[0039] See also Figure 1-4 In this embodiment, the outer diameter of the upper part of the connection seat 5 gradually decreases along the direction in which the motor shaft 2 is inserted, and the lower part of the connection seat 5 is cylindrical, and its outer diameter is larger than the outer diameter of the upper part of the connection portion 5. The lower part of the limiting sleeve 5 is adapted to the shape of the connection seat 5.

[0040] See also Figure 1-4 In this embodiment, the first mounting hole 52 is tapered, and the inner diameter gradually decreases in the direction toward the motor shaft 2. The shape of the first mounting hole 52 is adapted to the shape of the ball 4, so that the ball 4 is firmly connected to the connecting seat 5 and the motor shaft 2.

[0041] See also Figure 1-4 In this embodiment, the number of the first mounting holes 52 is at least two, and the at least two first mounting holes 52 are symmetrically arranged along the center of the connecting seat 5; the number and position of the second mounting holes 21 and the balls 4 correspond to the number and position of the first mounting holes 52. At least two symmetrically arranged balls 4 are arranged to firmly connect the connecting seat 5 to the motor shaft 2.

[0042] In one embodiment, the inner side of the limiting sleeve 3 is provided with an internal thread, and the outer surface of the connecting seat 5 is provided with an external thread, and the internal thread of the limiting sleeve 3 is connected to the external thread of the connecting seat 5. The limiting sleeve 3 is detachably sleeved on the connecting seat 5 through the threaded connection, which is convenient for disassembly and installation.

[0043] Example 2

[0044] This embodiment provides a motor encoder connection structure, see Figure 1-4 The encoder connection structure of the motor includes a rotating shaft sleeve, a limit sleeve 3 and a ball 4 for fixedly connecting with the encoder;

[0045] The shaft sleeve includes an annular base plate 1 for fixing the encoder and an annular connecting seat 5 protruding from the center of the annular base plate 1. The connecting seat 5 is provided with a connecting through hole 51 for accommodating the motor shaft 2 along its axial direction.

[0046] A first mounting hole 52 is formed through the side wall of the connecting seat 5, and the position of the first mounting hole 52 corresponds to the second mounting hole 21 on the motor shaft 2;

[0047] The limiting sleeve 3 is detachably mounted on the outside of the connecting seat 5, and clamps the ball 4 together with the motor shaft 2, so that at least part of the ball 4 is located in the first mounting hole 52, and part of the ball 4 is located in the second mounting hole 21, and is detachably embedded in the first mounting hole 52 and the second mounting hole 21;

[0048] The ball 4 abuts against the inner wall of the limiting sleeve 3 , and the limiting sleeve 3 limits the ball 4 .

[0049] In the encoder connection structure of the motor provided in this embodiment, the ball 4 is embedded in the first mounting hole 52 of the connecting seat 5 and the second mounting hole 21 of the motor shaft 2 to limit the axial rotation of the motor shaft 2, thereby connecting the motor shaft 2 to the connecting seat 5. At the same time, the limiting sleeve 3 and the motor shaft 2 clamp the ball together to jointly limit the movement of the ball 4. When the motor shaft 2 needs to be removed, the limiting sleeve 3 is removed and the ball 4 is taken out to release the restriction between the motor shaft 2 and the connecting seat 5, and the operation is simple. The encoder connection structure of the motor provided in this embodiment ensures the stability of the connection between the motor shaft 2 and the annular substrate 1, and is easy to install and disassemble.

[0050] See also Figure 1-4In this embodiment, the inner side wall of the limiting sleeve 3 abuts against the outer surface of the connecting seat 5, so that the ball 4 abuts against the inner side wall of the limiting sleeve 3. The inner side wall of the limiting sleeve 3 abuts against the outer surface of the connecting seat 5, limiting the radial movement of the ball 4 in the connecting seat 5, so that the connecting seat 5 and the motor shaft 2 are firmly connected.

[0051] The outer diameter of the upper half of the connecting seat 5 gradually decreases along the direction in which the motor shaft 2 is inserted, thereby forming a first inclined side wall 53, and the first mounting hole 52 is arranged on the first inclined side wall 53; the inner diameter of the limiting sleeve 3 gradually increases along the direction in which the motor shaft 2 is inserted, thereby forming a limiting inclined surface 3111, which clamps the ball 4, thereby pressing the ball 4 during installation and subsequent use, and the first inclined side wall 53 is installed and abutted with the limiting inclined surface 3111, so that the ball 4 is embedded in the first mounting hole and the second mounting hole 21 and ensures that it is embedded in place.

[0052] See also Figure 1-4 In this embodiment, the outer diameter of the upper part of the connecting seat 5 gradually decreases along the direction in which the motor shaft 2 is inserted, and the lower part of the connecting seat 5 is cylindrical, and its outer diameter is greater than the outer diameter of the upper part of the connecting portion 5.

[0053] See also Figure 1-4 In this embodiment, the first mounting hole 52 is tapered, and the inner diameter gradually decreases in the direction toward the motor shaft 2. The shape of the first mounting hole 52 is adapted to the shape of the ball 4, so that the ball 4 is firmly connected to the connecting seat 5 and the motor shaft 2.

[0054] In this embodiment, the number of the first mounting holes 52 is three, and the three first mounting holes 52 are symmetrically arranged along the center of the connecting seat 5; the number and positions of the second mounting holes 21 and the balls 4 correspond to the number and positions of the first mounting holes 52.

[0055] Figure 5 is an exploded view of the limit sleeve of Example 2, Figure 6 is a schematic diagram of the connection between the limiting sleeve, the annular base plate and the connecting seat of Example 2, Figure 7 is a schematic diagram of the lifting process of the limiting sleeve in Example 2, Figure 8 This is a schematic diagram of the lifting of the limit sleeve of Example 2. Figure 5-8 In this embodiment, the limiting sleeve 3 includes a mounting sleeve 31, a pressure plate 32 and a spring 33; the connecting portion is disposed through the mounting sleeve 31;

[0056] The mounting sleeve 31 is provided with an inclined portion 311, the inclined portion 311 is convexly arranged on the inner side wall of the mounting sleeve 31, and the distance between the inclined portion 311 and the connecting seat 5 increases in the direction toward the annular substrate 1;

[0057] The pressing plate 32 is fixed to the side of the connecting seat 5 away from the annular substrate 1; one end of the spring 33 is fixed to the inclined portion 311, and the other end is installed on the pressing plate 32, and the spring 33 is in a compressed state under the action of the pressing plate 32. The pressing plate 32 compresses the spring 33, so that the spring 33 is in a compressed state, and the inclined portion 311 is pressed downward by the spring 33, so that the bottom surface of the mounting sleeve 31 is closely fitted with the annular substrate 1, thereby ensuring the stability of the connection of the mounting sleeve 31, so that the ball 4 can be stably embedded in the first mounting hole 52 and the second mounting hole 21.

[0058] In this embodiment, the distance between the lower part of the mounting sleeve 31 and the connecting seat 5 gradually increases in the direction toward the annular substrate 1, and the lower outer diameter of the connecting seat 5 gradually increases in the direction toward the annular substrate 1. The bottom surface of the mounting sleeve 31 abuts against the annular substrate 1, and the lower part of the mounting sleeve 31 is matched and connected with the lower part of the connecting seat 5 to achieve a fit, which exerts a compressive effect on the ball 4, so that the motor shaft 2 and the base are connected and tightened.

[0059] See also Figure 5-7 The distance between the lower part of the mounting sleeve 31 and the connecting seat 5 gradually increases in the direction toward the annular substrate 1, thereby forming a limiting slope 3111 on the inner side wall of the mounting sleeve 31, and the distance between the limiting slope 3111 and the connecting seat 5 increases in the direction toward the annular substrate 1; the outer diameter of the lower part of the connecting seat 5 gradually increases in the direction toward the annular substrate 1, forming a first inclined side wall 53, and the first inclined side wall 53 is in contact with the limiting slope 3111.

[0060] In another embodiment, the inner wall of the limiting sleeve 3 has no inclined angle, and the ball 4 abuts against the inner wall of the limiting sleeve 3 along its radial direction. The limiting sleeve 3 is rotated to separate it from the connecting seat 5. The ball 4 can fall from the first mounting hole 52 of the connecting seat 5 and the second mounting hole 21 of the motor shaft 2 under the natural force, and the motor shaft 2 can be taken out at this time.

[0061] See also Figure 5-7 In this embodiment, the limiting inclined surface 3111 is arranged on the inclined portion 311; the inclined portion 311 also includes a platform surface 3112, and the connection between the platform surface 3112 and the limiting inclined surface 3111 abuts against the outer surface of the connecting seat 5, and one end of the spring 33 is fixed to the platform surface 3112 of the inclined portion 311, and the other end is installed on the pressure plate 32.

[0062] See also Figure 5-8 In this embodiment, a horizontal abutting surface 3113 is provided at the bottom of the inclined portion 311, and the horizontal abutting surface 3113 abuts against the annular substrate 1. The horizontal abutting surface 3113 and the annular substrate 1 are closely fitted and abutted under the action of the spring force, thereby ensuring the stability of the connection of the mounting sleeve 31.

[0063] In another embodiment, a plurality of positioning posts are provided on the annular substrate 1, and a plurality of positioning grooves corresponding to the positions and numbers of the positioning posts are provided at the bottom of the inclined portion 311. The plurality of positioning grooves are snap-connected with the plurality of positioning posts so that the bottom surface of the mounting sleeve 31 is tightly fitted with the annular substrate 1, thereby ensuring the stability of the connection of the mounting sleeve 31.

[0064] When installing the limit sleeve, the ring base plate and the connecting seat, please refer to Figure 6 , the ball can be pre-installed in the first installation hole 52, and the installation sleeve 31 is used to limit the ball 4, so that the inclined surface 3111 squeezes the ball 4 to limit the radial movement of the ball 4. At the same time, the horizontal abutting surface 3113 of the limiting sleeve 3 abuts against the annular base plate 1 under the downward pressure of the spring 33 to limit the axial movement of the limiting sleeve 3, thereby preventing the ball 4 from moving and limiting the ball 4 in the first installation hole 52; when the motor shaft 2 needs to be installed, the motor shaft 2 is installed into the connecting through hole 51 of the connecting seat 5, please refer to Figure 7 At this time, the installation sleeve 31 is pulled up to a certain height, the pressure surface of the limiting inclined surface 3111 on the ball 4 is reduced, and the ball 4 can move in a certain range in the radial direction. At this time, the ball 4 is clamped to the second installation hole 21 of the motor shaft 4, and then the installation sleeve 31 is put back. Figure 6 The mounting sleeve 31 is used to limit the ball 4 so that the ball 4 is limited in the first mounting hole 51 of the connecting seat 5 and the second mounting hole 21 of the motor shaft. Figure 8 , pull up the installation sleeve to Figure 8 In the position shown, the limiting slope 3111 is separated from the first inclined side wall 53 of the connecting seat 5, and the pressure on the ball 4 is lost. The ball can be taken out from the first mounting hole 51 of the connecting seat 5 and the second mounting hole 21 of the motor shaft 2, thereby losing the limiting on the motor shaft 2 and taking out the motor shaft 2.

[0065] Example 3

[0066] The present embodiment provides a motor, including a rotating structure, a motor shaft 2, an encoder and an encoder connecting structure of the motor of embodiment 1 or 2; the annular substrate 1 of the encoder connecting structure of the motor is installed on the encoder, and the annular substrate 1 is electrically connected to the encoder; the rotating structure includes a rotor, the motor shaft 2 is fixedly connected to the rotor, the motor shaft 2 is passed through the annular substrate 1, and the ball 4 is embedded in the first mounting hole 52 and the second mounting hole 21.

[0067] In the motor provided in this embodiment, the motor shaft 2 is connected to the rotor of the motor, and the motor shaft 2 is passed through and fixed in the annular substrate 1, so that the annular substrate 1 and the rotating structure can rotate synchronously, so that the position signal of the annular substrate 1 is transmitted to the encoder, and the encoder determines and controls the rotation of the motor.

[0068] In this embodiment, the second mounting hole 52 is in an arc shape, and is used to fit with the ball 4 .

[0069] The present invention is not limited to the above-mentioned embodiments. If various changes or modifications to the present invention do not depart from the spirit and scope of the present invention, and if these changes and modifications fall within the claims of the present invention and the scope of equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A motor encoder connection structure, characterized in that: Including a rotating shaft sleeve, a limiting sleeve and a ball; The shaft sleeve comprises an annular base plate for fixedly connecting with the encoder and an annular connecting seat protruding from the center of the annular base plate, wherein the connecting seat is provided with a connecting through hole for accommodating the motor shaft along its axial direction; A first mounting hole is formed through the side wall of the connecting seat, and the position of the first mounting hole corresponds to the second mounting hole on the motor shaft; The ball bearing is detachably embedded in the first mounting hole and the second mounting hole; The limiting sleeve is detachably mounted on the outside of the connecting seat, and clamps the ball together with the motor shaft, so that at least part of the ball is located in the first mounting hole and part of the ball is located in the second mounting hole.

2. The encoder connection structure of the motor according to claim 1, characterized in that: The first mounting hole is tapered, and the inner diameter thereof gradually decreases in a direction toward the motor shaft.

3. The encoder connection structure of the motor according to claim 1, characterized in that: The number of the first mounting holes is at least two, and the at least two first mounting holes are symmetrically arranged along the center of the connecting seat; the number and positions of the second mounting holes and the balls correspond to the number and positions of the first mounting holes.

4. The encoder connection structure of the motor according to claim 1, characterized in that: The outer diameter of the upper half of the connecting seat gradually decreases along the direction in which the motor shaft is inserted, and the inner diameter of the limiting sleeve gradually increases along the direction in which the motor shaft is inserted. The limiting sleeve is cooperatively connected with the upper half of the connecting seat; the first mounting hole is arranged in the upper half of the connecting seat.

5. The encoder connection structure of the motor according to any one of claims 1 to 4, characterized in that: An internal thread is formed on the inner side of the limiting sleeve, and an external thread is formed on the outer surface of the connecting seat. The internal thread of the limiting sleeve is connected to the external thread of the connecting seat.

6. The encoder connection structure of a motor according to any one of claims 1 to 3, characterized in that: The limiting sleeve comprises a mounting sleeve, a pressing plate and a spring; The connecting seat is passed through the mounting sleeve, and the mounting sleeve is provided with an inclined portion, and the inclined portion is protruded on the inner side wall of the mounting sleeve, and the distance between the inclined portion and the connecting seat increases along the direction toward the annular substrate; the pressure plate is fixed to the side of the connecting seat away from the annular substrate; one end of the spring is fixed to the inclined portion, and the other end is installed on the pressure plate, and the spring is in a compressed state under the action of the pressure plate.

7. The encoder connection structure of the motor according to claim 6, characterized in that: The distance between the lower portion of the installation sleeve and the connection seat gradually increases in the direction toward the annular substrate, and the lower portion of the connection seat gradually increases in the direction toward the annular substrate.

8. The encoder connection structure of the motor according to claim 7, characterized in that: A horizontal abutting surface is disposed at the bottom of the inclined portion, and the horizontal abutting surface abuts against the annular substrate.

9. A motor, characterized in that: It includes a rotating structure, a motor shaft, an encoder and an encoder connecting structure of a motor as described in any one of claims 1-8; the annular substrate of the encoder connecting structure of the motor is installed on the encoder, and the annular substrate is electrically connected to the encoder; the rotating structure includes a rotor, the motor shaft is fixedly connected to the rotor, the motor shaft is provided with a second mounting hole corresponding to the position of the first mounting hole, the motor shaft is passed through the annular substrate, and the ball is embedded in the first mounting hole and the second mounting hole.

10. The motor according to claim 9, characterized in that: The second mounting hole is in an arc shape.

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