Encoder structure, motor and system with motor

Abstract

The utility model provides an encoder structure, a motor and a system with the motor, the encoder structure comprises an encoder cover, an accommodating space is formed between the encoder cover and an encoder adapter cover connected with the motor, and the accommodating space accommodates a code disc which is rotatably arranged; the circuit board is arranged in the accommodating space, and the circuit board and the code disc are correspondingly arranged; and the circuit board supporting seat is provided with a circuit board, and the circuit board supporting seat is arranged on the encoder cover. The encoder structure effectively isolates and blocks heat on the encoder adapter cover from being transmitted to the encoder structure such as the circuit board when the motor operates, can effectively reduce the temperature when the encoder operates, and solves the problem that the encoder is influenced by the motor when operating in the prior art. And the operation temperature of the encoder is high.

Description

Technical Field

[0001] This utility model relates to the field of encoder technology, specifically to an encoder structure, a motor, and a system having the motor. Background Technology

[0002] To achieve multiple controls over motor speed, position, and torque, encoders are now installed on motors to detect their rotational speed and position. With the trend towards miniaturization in motor design, simplification of the motor's structure and addressing excessive temperature rise during operation have been key industry challenges. As a precision detection device, the accuracy of encoders is significantly affected by installation precision and temperature. The problem of encoder failure due to excessive motor temperature has become a pressing issue that needs to be addressed in the industry.

[0003] Because the encoder is directly mounted on the rotor shaft and tightly fitted to the rear end cover with screws, the motor's own temperature is transferred to the encoder through the rotor shaft and rear end cover via heat conduction and radiation during motor operation, causing the encoder's operating temperature to rise further. Excessive encoder operating temperature can damage the encoder, leading to motor malfunction and paralysis of the motor control system. Therefore, reducing the encoder's operating temperature and improving its installation accuracy are crucial for ensuring efficient and stable motor operation.

[0004] Therefore, existing technologies need further development. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide an encoder structure, a motor, and a system having the motor, so as to solve the technical problem in the related art that the encoder is affected by the motor during operation, which easily leads to high encoder operating temperature.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solution: an encoder structure is provided, comprising: an encoder cover, wherein an accommodating space is formed between the encoder cover and an encoder adapter cover connected to a motor, and a rotatably mounted code disk is contained within the accommodating space; a circuit board, wherein the circuit board is disposed within the accommodating space and is correspondingly disposed with respect to the code disk; and a circuit board support, wherein the circuit board is mounted on the circuit board support and the circuit board support is disposed on the encoder cover.

[0007] Furthermore, the circuit board support includes: a support body, which is fixedly connected to the encoder cover. The support body has a hollow mounting cavity inside, the shape of which matches the shape of the circuit board. The circuit board is detachably connected to the inner wall of the support body.

[0008] Furthermore, the circuit board support includes: a retaining spring, which is disposed on the inner wall of the support body. The retaining spring includes an elastic part and an abutting part connected to each other. One end of the elastic part is connected to the support body, and the other end of the elastic part is inclined away from the inner wall of the support body. The abutting part abuts against the side of the circuit board. At least two retaining springs are included, and at least two retaining springs are respectively disposed on opposite sides of the support body.

[0009] Furthermore, the abutment portion includes a receiving groove, which contains at least a portion of the circuit board.

[0010] Furthermore, an avoidance groove is provided on the inner wall of the support body near the encoder adapter cover. The avoidance groove is recessed and at least two retaining rings are installed inside the avoidance groove.

[0011] Furthermore, the encoder structure also includes a support frame, which includes a support portion that abuts against the side of the circuit board near the encoder adapter cover. The support portion is used to support the circuit board, and the support frame is installed at one end of the support body near the encoder adapter cover.

[0012] Furthermore, a positioning groove is provided at one end of the support body near the encoder adapter cover, and a positioning part corresponding to the positioning groove is provided on the support frame, with the positioning part embedded in the positioning groove.

[0013] Furthermore, the encoder structure includes fastening screws that pass through the support frame and the support body respectively to fix the support frame to the support body.

[0014] An electric motor comprising the encoder structure described above.

[0015] A system having an electric motor, including the electric motor described above.

[0016] Beneficial effects:

[0017] 1. By changing the encoder cover structure and placing the circuit board support on the encoder cover, the circuit board is "suspended" in the accommodating space. Compared with the existing technology where the circuit board is directly fixed to the encoder adapter cover, this "suspended" structure in this embodiment avoids direct contact between the circuit board and the encoder adapter cover, cuts off the rigid assembly between the encoder and the encoder adapter cover, and prevents the heat on the encoder adapter cover from being transferred to the circuit board and other circuit board components. This effectively isolates and blocks the heat from the encoder adapter cover to the circuit board and other encoder structures when the motor is running, which can effectively reduce the temperature of the encoder during operation. This solves the technical problem in related technologies where the encoder is affected by the motor during operation, which easily leads to a high operating temperature of the encoder.

[0018] 2. In this embodiment, the circuit board is fixed by a retaining spring, simplifying the assembly process and enabling a detachable connection. Furthermore, during circuit board installation, positioning is directly based on the support body, and it is assembled together with the encoder cover onto the encoder adapter cover, and then installed onto the motor together with the encoder adapter cover. The new encoder cover improves the ease of encoder installation. The encoder circuit board and encoder cover share the same positioning reference, improving encoder installation accuracy and reducing the encoder's operating temperature. Heat from the motor and encoder adapter cover cannot be directly transferred to the encoder circuit board via heat conduction, thus significantly reducing the transfer of motor temperature to the encoder and achieving the goal of reducing encoder operating temperature rise. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the motor used in an embodiment of this utility model;

[0020] Figure 2 yes Figure 1 An enlarged view of point A in the image;

[0021] Figure 3 This is a cross-sectional view of the encoder cover of the encoder structure used in this embodiment of the utility model;

[0022] Figure 4 This is a perspective view of the encoder cover of the encoder structure used in this embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the encoder structure used in existing technology.

[0024] The above figures include the following reference numerals:

[0025] 51. Circuit board mounting bracket;

[0026] 10. Motor; 20. Bearing; 30. Motor stator; 40. Rotor shaft;

[0027] 1. Encoder cover; 2. Encoder adapter cover; 3. Accommodation space; 4. Code disk; 5. Circuit board; 6. Circuit board support; 61. Support body; 611. Clearance groove; 62. Snap ring; 621. Elastic part; 622. Abutment part; 63. Positioning groove; 7. Support frame; 71. Support part; 72. Positioning part. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0029] Example 1

[0030] It should be noted that, see Figure 5 The traditional working principle of a motor is that alternating current is applied to the stator 30, causing it to generate a changing magnetic field that interacts with the rotor's magnetic field, thus driving the rotor shaft 40 to rotate. The encoder's function is to detect and collect motor motion information and feed this information back to the control system, thereby achieving precise control of the motor. The encoder works by rotating the rotor shaft 40, causing it and the code disk 4 to rotate together. A sensor on the circuit board 5 converts the optical signal from the code disk 4 into an electrical signal, thus detecting and collecting motor motion information. During operation, the heat generated by the motor's own iron losses, copper losses, and mechanical losses is transferred through the encoder adapter cover 2, encoder cover, and rotor shaft 40 via heat conduction or radiation. This can cause the encoder to overheat and damage it, ultimately preventing the motor from functioning properly.

[0031] According to an embodiment of this utility model, an encoder structure is provided; please refer to [link / reference]. Figures 1 to 4 It includes: an encoder cover 1, an encoder cover 1 and an encoder adapter cover 2 for connecting to a motor 10 forming an accommodating space 3, the accommodating space 3 containing a rotatably mounted code disk 4; a circuit board 5, the circuit board 5 being disposed within the accommodating space 3, the circuit board 5 being disposed correspondingly to the code disk 4; and a circuit board support 6, the circuit board support 6 being disposed on the encoder cover 1, the circuit board 5 being mounted on the circuit board support 6.

[0032] By changing the encoder cover structure and placing the circuit board support 6 on the encoder cover 1, the circuit board 5 is "suspended" in the accommodating space 3. Compared with the existing technology where the circuit board 5 is directly fixed to the encoder adapter cover 2, this "suspended" structure in this embodiment avoids direct contact between the circuit board 5 and the encoder adapter cover 2, cuts off the rigid assembly between the encoder and the encoder adapter cover 2, and prevents the heat on the encoder adapter cover 2 from being transferred to the circuit board 5 and other circuit board components. This effectively isolates and blocks the heat on the encoder adapter cover 2 from being transferred to the encoder structure such as the circuit board 5 when the motor is running, which can effectively reduce the temperature of the encoder during operation and solve the technical problem in the related technology that the encoder is easily affected by the motor during operation, which can easily lead to a high operating temperature of the encoder.

[0033] Understandably, by adopting the above settings, direct contact with circuit board 5 is avoided, thus the thickness of encoder cover 1 can be reduced, and the overall length of the motor can be decreased.

[0034] For the encoder structure in this embodiment, see [link to encoder structure]. Figure 1 The circuit board support 6 includes: a support body 61, which is fixedly connected to the encoder cover 1. The support body 61 has a hollow mounting cavity inside, the shape of which matches the shape of the circuit board 5. The circuit board 5 is detachably connected to the inner wall of the support body 61.

[0035] With the above configuration, the support body 61 has a hollow mounting cavity to accommodate and mount the circuit board 5. The circuit board 5 is detachably connected to the inner wall of the support body 61, which facilitates the installation and replacement of the circuit board 5.

[0036] For the encoder structure in this embodiment, see [link to encoder structure]. Figure 2-3 The circuit board support 6 includes a retaining spring 62, which is disposed on the inner wall of the support body 61. The retaining spring 62 includes an elastic part 621 and an abutting part 622 connected to each other. One end of the elastic part 621 is connected to the support body 61, and the other end of the elastic part 621 is inclined away from the inner wall of the support body 61. The abutting part 62 abuts against the side of the circuit board 5. At least two retaining springs 62 are included, and at least two retaining springs 62 are respectively disposed on opposite sides of the support body 61.

[0037] In this embodiment, the circuit board 5 is fixed by the retaining ring 62, which simplifies the assembly process of the circuit board 5 and enables its detachable connection. Furthermore, during installation, the circuit board 5 is positioned directly based on the support body 61, and is assembled together with the encoder cover 1 onto the encoder adapter cover 2, and then installed onto the motor together with the encoder adapter cover 2. The new encoder cover improves the ease of encoder installation. The encoder circuit board 5 and the encoder cover 1 have the same positioning reference, improving the encoder installation accuracy. Simultaneously, it reduces the encoder's operating temperature. Heat from the motor and encoder adapter cover 2 cannot be directly transferred to the encoder circuit board 5 via thermal conduction, thus significantly reducing the transfer of the motor's own operating temperature to the encoder, thereby achieving the goal of reducing the encoder's operating temperature rise.

[0038] For the encoder structure in this embodiment, see [link to encoder structure]. Figure 2 The abutment portion 622 includes a receiving groove, which contains at least a portion of the circuit board 5. By providing the receiving groove, the circuit board 5 can be stably abutted against the abutment portion 622, preventing the circuit board from sliding against the abutment portion and causing the circuit board 5 to fall off.

[0039] Specifically, during the installation of circuit board 5, by pushing circuit board 5 into the mounting cavity, the side of circuit board 5 can be inserted into the receiving groove. When it is necessary to remove circuit board 5, the retaining spring 62 is moved towards the inner wall, which can make circuit board 5 leave the receiving groove, thereby detaching the circuit board and completing the unloading of the circuit board. This achieves quick installation and removal of circuit board 5 and simplifies the installation process of circuit board 5.

[0040] For the encoder structure in this embodiment, see [link to encoder structure]. Figure 2 The inner wall of the support body 61 near the encoder adapter cover 2 has a relief groove 611. The relief groove 611 is recessed, and at least two retaining rings 62 are installed inside the relief groove 611. By setting the relief groove 611, the circuit board 5 can be limited to prevent the circuit board 5 from entering the mounting cavity, avoiding the situation where the circuit board 5 is displaced and difficult to remove, and further simplifying the installation process of the circuit board 5.

[0041] In some embodiments, the clearance groove 611 is provided with a draft angle to facilitate the installation and removal of the circuit board.

[0042] For the encoder structure in this embodiment, see [link to encoder structure]. Figure 1-2The encoder structure also includes a support frame 7, which includes a support portion 71 that abuts against the side of the circuit board 5 near the encoder adapter cover 2. The support portion 71 supports the circuit board 5, and the support frame 7 is installed at one end of the support body 61 near the encoder adapter cover 2. By setting the support frame 7, the support frame 7 is fixed on the support body 61, further supporting the circuit board 5 based on the support body 61 and the retaining spring 62, increasing the fixing strength of the circuit board 5.

[0043] For the encoder structure in this embodiment, see [link to encoder structure]. Figure 2 The support base body 61 has a positioning groove 63 at one end near the encoder adapter cover 2. The support frame 7 has a positioning part 72 corresponding to the positioning groove 63, which is embedded in the positioning groove. By setting the positioning groove 63 and the positioning part 72, the support frame 7 can be positioned when connected to the support base body 61, improving the installation accuracy of the support frame 7 and preventing the support frame 7 from obstructing the sensor, thus affecting the normal use of the encoder.

[0044] In the encoder structure of this embodiment, the encoder structure includes fastening screws that pass through the support frame 7 and the support body 61 respectively, so as to fix the support frame 7 on the support body 61.

[0045] In some embodiments, the support frame 7 can be fixed to the support body 61 by fastening screws.

[0046] In some embodiments, adhesive can be used to fix the support frame 7 to the support body 61.

[0047] Example 2

[0048] An electric motor comprising the encoder structure described above.

[0049] The main difference lies in the encoder connection method, which changes compared to traditional motors. Instead of directly mounting the encoder to the encoder adapter cover 2 with screws, the circuit board 5 is directly mounted on the encoder cover 1. The encoder cover 1 includes a circuit board support 6, with a retaining spring 62 on the support body 61 to secure the circuit board. The support frame 7 is secured to the support body 61 via a slot. When the motor runs, the rotor shaft 40 rotates, driving the code disk 4 to rotate. Heat from the encoder adapter cover 2 cannot be directly transferred to the support frame 7. The encoder cover 1 is thinner, reducing the overall length of the motor. The circuit board 5 is also positioned directly on the support body 61 and assembled together with the encoder cover 1 on the encoder adapter cover 2. This new encoder cover improves the ease of encoder installation. The encoder and encoder cover share the same positioning reference, improving installation accuracy. Furthermore, heat from the encoder adapter cover 2 cannot be directly transferred to the circuit board 5 via heat conduction, significantly reducing the temperature rise of the motor itself and thus lowering the encoder's operating temperature.

[0050] By changing the encoder cover structure and placing the circuit board support 6 on the encoder cover 1, the circuit board 5 is "suspended" in the accommodating space 3. Compared with the existing technology where the circuit board 5 is directly fixed to the encoder adapter cover 2, this "suspended" structure in this embodiment avoids direct contact between the circuit board 5 and the encoder adapter cover 2, cuts off the rigid assembly between the encoder and the encoder adapter cover 2, and prevents the heat on the encoder adapter cover 2 from being transferred to the circuit board 5 and other circuit board components. This effectively isolates and blocks the heat on the encoder adapter cover 2 from being transferred to the encoder structure such as the circuit board 5 when the motor is running, which can effectively reduce the temperature of the encoder during operation and solve the technical problem in the related technology that the encoder is easily affected by the motor during operation, which can easily lead to a high operating temperature of the encoder.

[0051] Improving encoder installation accuracy and ease of installation, reducing encoder temperature rise, raising the design temperature rise limit for the motor, reducing the length of the motor body and optimizing its size, and increasing the power density of the motor will further enhance motor performance and operational stability.

[0052] Example 3

[0053] A system having an electric motor, including the electric motor described above.

[0054] In the motor of this embodiment, by changing the encoder cover structure, the circuit board support 6 is set on the encoder cover 1, so that the circuit board 5 is "suspended" in the accommodating space 3. Compared with the structure of the prior art in which the circuit board 5 is directly fixed on the encoder adapter cover 2, this "suspended" structure in this embodiment avoids direct contact between the circuit board 5 and the encoder adapter cover 2, cuts off the rigid assembly between the encoder and the encoder adapter cover 2, and prevents the heat on the encoder adapter cover 2 from being transferred to the circuit board 5 and other circuit board components. This effectively isolates and blocks the heat on the encoder adapter cover 2 from being transferred to the encoder structure such as the circuit board 5 when the motor is running, which can effectively reduce the temperature of the encoder during operation and solve the technical problem in the related art that the encoder is affected by the motor during operation, which easily leads to a high operating temperature of the encoder.

[0055] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0056] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0057] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0058] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0059] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An encoder structure, characterized in that, include: An encoder cover (1) is formed between the encoder cover (1) and the encoder adapter cover (2) connected to the motor (10), and the accommodating space (3) contains a rotatably mounted code disk (4). Circuit board (5), the circuit board (5) is disposed in the accommodating space (3), and the circuit board (5) is disposed correspondingly to the code disk (4); Circuit board support (6), on which the circuit board (5) is mounted, and the circuit board support (6) is disposed on the encoder cover (1).

2. The encoder structure according to claim 1, characterized in that, The circuit board support (6) includes: The support body (61) is fixedly connected to the encoder cover (1). The support body (61) has a hollow mounting cavity inside. The shape of the mounting cavity matches the shape of the circuit board (5). The circuit board (5) is detachably connected to the inner wall of the support body (61).

3. The encoder structure according to claim 2, characterized in that, The circuit board support (6) includes: A retaining ring (62) is disposed on the inner wall of the support body (61). The retaining ring (62) includes an elastic part (621) and an abutment part (622) connected to each other. One end of the elastic part (621) is connected to the support body (61), and the other end of the elastic part (621) is inclined away from the inner wall of the support body (61). The abutment part (622) abuts against the side of the circuit board (5). The retaining ring (62) includes at least two, and the at least two retaining rings (62) are respectively disposed on opposite sides of the support body (61).

4. The encoder structure according to claim 3, characterized in that, The abutment portion (622) includes a receiving groove that contains at least a portion of the circuit board (5).

5. The encoder structure according to claim 3, characterized in that, The inner wall of the support body (61) near the encoder adapter cover (2) has a relief groove (611). The relief groove (611) is recessed and at least two snap rings (62) are installed in the relief groove (611).

6. The encoder structure according to claim 2, characterized in that, The encoder structure also includes: The support frame (7) includes a support part (71) that abuts against the side of the circuit board (5) near the encoder adapter cover (2). The support part (71) is used to support the circuit board (5). The support frame (7) is installed at one end of the support body (61) near the encoder adapter cover (2).

7. The encoder structure according to claim 6, characterized in that, The support body (61) has a positioning groove (63) at one end near the encoder adapter cover (2), and the support frame (7) has a positioning part (72) corresponding to the positioning groove (63), and the positioning part (72) is embedded in the positioning groove.

8. The encoder structure according to claim 7, characterized in that, The encoder structure includes fastening screws that pass through the support frame (7) and the support body (61) respectively, to fix the support frame (7) to the support body (61).

9. An electric motor, characterized in that, The encoder structure includes any one of claims 1 to 8.

10. A system having an electric motor, characterized in that, Includes the motor as described in claim 9.

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