A servo motor structure facilitating replacement of an encoder

Abstract

The application relates to a servo motor structure facilitating replacement of an encoder, belonging to the technical field of servo motors, which can conveniently replace the encoder in the servo motor, has better comprehensive practicability, and comprises a motor main body, the motor main body being fixedly connected with an output shaft in a concentric mode; a reset spring, one end of the reset spring being fixedly connected in an installation groove arranged on the motor main body, the other end of the reset spring being fixedly connected with a pressing plate; a cover plate, the cover plate being fixedly installed on the motor main body, the cover plate being matched with the installation groove, and a through groove and a rotating groove not being penetrated being arranged on the cover plate; a dismounting shell and a connecting rod, one end of the connecting rod being fixedly connected with a knob, the other end of the connecting rod extending into the dismounting shell through a through hole arranged on the dismounting shell and being fixedly connected with a limiting block, the limiting block being matched with the through groove arranged on the cover plate; four limiting columns, the four limiting columns being fixedly connected on the knob; and an encoder, the encoder being arranged in the dismounting shell.

Description

Technical Field

[0001] This application relates to the field of servo motor technology, and in particular to a servo motor structure that facilitates encoder replacement. Background Technology

[0002] As is well known, a servo motor is a high-precision, high-performance motor that employs a closed-loop control system to precisely control speed, torque, and position based on input commands. It consists of the motor body, encoder, and servo driver. Through real-time feedback and adjustment, it ensures a high degree of consistency between the output and the target value. Compared to ordinary motors, servo motors feature fast response, wide speed range, precise positioning, and smooth operation. They are widely used in industrial automation, robotics, CNC machine tools, and precision instruments. Whether operating at high speeds with dynamic response or low speeds with high torque output, servo motors can operate stably, meeting the precision control requirements under complex working conditions.

[0003] In related technologies, a search revealed that a utility model with patent publication number CN219875267U discloses a servo motor, including: a servo motor body and a front cover, an output shaft is installed on the side of the front cover away from the servo motor body, a rear cover is installed on the side of the servo motor body away from the front cover, and a protective part is installed on the outer wall of the servo motor body to fully protect it.

[0004] Regarding the aforementioned technologies, the applicant has found that although the existing device can provide sufficient protection for the outer surface of the motor during use, it still has the following drawbacks: after prolonged use, the encoder inside the servo motor is prone to damage. When the encoder is damaged, it is not convenient to replace the encoder inside the servo motor, resulting in insufficient overall practicality.

[0005] Therefore, we propose a servo motor structure that facilitates encoder replacement. Utility Model Content

[0006] The purpose of this invention is to provide a servo motor structure that facilitates encoder replacement, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A servo motor structure that facilitates encoder replacement includes:

[0009] The motor body is concentrically fixedly connected to the output shaft;

[0010] A reset spring, one end of which is fixedly connected to a mounting slot on the motor body, and the other end of which is fixedly connected to a clamping plate;

[0011] The cover plate is fixedly installed on the motor body. The cover plate and the mounting groove cooperate with each other, and the cover plate is provided with a through groove and a non-through rotating groove.

[0012] The outer shell and connecting rod are disassembled and assembled. One end of the connecting rod is fixedly connected to a knob, and the other end of the connecting rod extends into the disassembled and assembled outer shell through a through hole and is fixedly connected to a limiting block. The limiting block is adapted to the through groove opened on the cover plate.

[0013] Four limiting posts, all four of which are fixedly connected to the knob;

[0014] The encoder, which is installed inside the detachable housing, is used to detect the mechanical motion status in real time and provide feedback on precise position and speed information.

[0015] As a further improvement of this utility model: the knob is provided with a finger groove, and the finger groove is provided with anti-slip texture.

[0016] As a further improvement of this utility model: a sealing waterproof ring is provided between the motor body and the detachable housing, and the sealing waterproof ring is interference-fitted with the motor body and the detachable housing respectively.

[0017] As a further improvement of this utility model, a maintenance disc is detachably installed on the detachable outer casing by means of screws and nuts.

[0018] As a further improvement of this utility model: a sleeve is fixedly installed inside the detachable outer shell, and the connecting rod is slidably disposed inside the sleeve.

[0019] As a further embodiment of this utility model: the encoder includes a reading head that is fixedly installed on the detachable housing via a connecting frame, and a code disk rotor is rotatably arranged inside the reading head. The code disk rotor is magnetically coupled to the output shaft through a floating coupling.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] By pressing the knob towards the motor body, the driving connecting rod slides along the sleeve, allowing the limiting block to pass through the through slot on the cover plate and enter the mounting slot. Then, by rotating the knob, the limiting block rotates along the rotation slot on the cover plate. Under the combined action of the clamping plate and the return spring, the limiting block is pressed and fixed. At the same time, the limiting post presses against the other end of the disassembly and assembly housing, completing the quick fixed assembly. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2This is an exploded structural diagram showing the assembly and disassembly of the motor body, the outer casing, and the inspection panel of this utility model.

[0024] Figure 3 This is a schematic diagram showing the assembly and disassembly of the outer casing, reading head, and floating coupling of this utility model.

[0025] Figure 4 This is an exploded structural diagram showing the assembly and disassembly of the outer shell, reading head, and code disk rotor of this utility model.

[0026] Figure 5 This is a schematic diagram showing the structure of the knob, connecting rod, and limiting block of this utility model.

[0027] Figure 6 This is a schematic diagram of the structure of the reset spring and the clamping plate of this utility model.

[0028] In the diagram: 1. Motor body; 2. Output shaft; 3. Return spring; 4. Mounting slot; 5. Clamping plate; 6. Through slot; 7. Rotary slot; 8. Disassembly and assembly housing; 9. Connecting rod; 10. Knob; 11. Limit block; 12. Limit post; 13. Sealing and waterproof ring; 14. Inspection plate; 15. Sleeve; 16. Connecting frame; 17. Reading head; 18. Encoder rotor; 19. Floating coupling; 20. Cover plate. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] Please see Figures 1-6 In this embodiment of the utility model, a servo motor structure that facilitates encoder replacement includes:

[0032] Motor body 1, with output shaft 2 concentrically fixedly connected to motor body 1;

[0033] The reset spring 3 has one end fixedly connected to the mounting groove 4 opened on the motor body 1, and the other end of the reset spring 3 is fixedly connected to the abutment plate 5.

[0034] Cover plate 20 is fixedly installed on motor body 1. Cover plate 20 cooperates with mounting groove 4, and cover plate 20 has a through groove 6 and a non-through rotating groove 7.

[0035] The outer shell 8 and the connecting rod 9 are disassembled and assembled. One end of the connecting rod 9 is fixedly connected to a knob 10, and the other end of the connecting rod 9 extends into the disassembled and assembled shell 8 through a through hole and is fixedly connected to a limiting block 11. The limiting block 11 is adapted to the through groove 6 opened on the cover plate 20.

[0036] Four limiting posts 12 are fixedly connected to the knob 10.

[0037] The encoder, located inside the detachable housing 8, is used to detect the mechanical motion status in real time and provide feedback on precise position and speed information.

[0038] This servo motor structure facilitates encoder replacement. By pressing the knob 10 towards the motor body 1, the connecting rod 9 is driven to slide along the sleeve 15, allowing the limiting block 11 to pass through the through slot 6 on the cover plate 20 and enter the mounting slot 4. Then, by rotating the knob 10, the limiting block 11 rotates along the rotation slot 7 on the cover plate 20. Under the combined action of the clamping plate 5 and the return spring 3, the limiting block 11 is pressed and fixed. At the same time, the limiting post 12 presses against the other end of the disassembly and assembly housing 8, completing the quick fixed assembly.

[0039] exist Figure 5 In the middle: The knob 10 has a finger groove with anti-slip texture.

[0040] This servo motor structure, which facilitates encoder replacement, significantly improves operational convenience and safety through the combination of finger grooves and anti-slip textures: the finger grooves provide clear force guidance, ensuring precise control of pressing and rotating actions, while the anti-slip textures increase the coefficient of friction between the knob 10 and prevent slippage during operation, making it particularly suitable for industrial environments such as oil and moisture, and ensuring stable and reliable force application during quick assembly and disassembly.

[0041] exist Figure 1-2 In the middle: A sealing waterproof ring 13 is provided between the motor body 1 and the disassembly housing 8, and the sealing waterproof ring 13 is interference-fitted with the motor body 1 and the disassembly housing 8 respectively.

[0042] This servo motor structure, which facilitates encoder replacement, achieves dual protection through the interference fit structure of the sealing waterproof ring 13: the tight pressing of the sealing waterproof ring 13 with the motor body 1 and the disassembly housing 8 forms a physical barrier, effectively isolating the intrusion of pollutants such as moisture and dust, while compensating for gap changes caused by assembly tolerances and vibration, ensuring the long-term stable operation of the encoder module under harsh working conditions such as humidity and dust, and extending the life of core components.

[0043] exist Figure 1-2 In the middle: The maintenance panel 14 is detachably installed on the outer casing 8 by screws and nuts.

[0044] This servo motor structure, which facilitates encoder replacement, achieves a balance between convenient maintenance and protection through a detachable maintenance panel 14 secured by screws and nuts. The maintenance panel 14 covers key electrical interfaces and the encoder module, and the screw connection provides stable locking force to prevent loosening due to vibration. At the same time, it supports quick disassembly with tools, facilitating on-site calibration or replacement of internal components without the need to completely remove the outer casing, thus balancing protection level and maintenance efficiency.

[0045] exist Figure 5 In the middle: the sleeve 15 is fixedly installed inside the outer shell 8, and the connecting rod 9 is slidably set inside the sleeve 15.

[0046] This servo motor structure facilitates encoder replacement. The guide effect of the sleeve 15 ensures that the connecting rod 9 slides precisely along the axial direction. The sleeve 15 and the connecting rod 9 are fitted with a clearance of 0.01-0.03mm, which not only limits radial offset but also reduces the coefficient of sliding friction, making the pressing and rotating action of the knob 10 smooth and without jamming. At the same time, it avoids mechanical wear caused by off-center load and improves the durability of the quick-release structure.

[0047] exist Figure 3-4 The encoder includes a reading head 17 that is fixedly mounted to the detachable housing 8 via a connecting frame 16. A code disk rotor 18 is rotatably mounted inside the reading head 17. The code disk rotor 18 is magnetically coupled to the output shaft 2 via a floating coupling 19.

[0048] This servo motor structure facilitates encoder replacement. The reading head 17 is rigidly fixed to the disassembly housing 8 via the connecting bracket 16, ensuring signal acquisition stability. The code disk rotor 18 forms a non-contact magnetic coupling transmission with the output shaft 2 via the floating coupling 19, which not only isolates the influence of mechanical vibration on reading accuracy but also allows ±2mm axial float, enabling the encoder module to be quickly reset without precise alignment during disassembly, thus improving maintenance efficiency.

[0049] In this embodiment, the motor body 1 and the floating coupling 19 are commercially available devices known to those skilled in the art. They can be customized or selected according to actual needs. Here, we are only using them without making any structural or functional improvements. We will not go into detail here. The motor body 1 is equipped with a matching control switch. The installation position of the control switch is selected according to actual usage needs to facilitate operation and control by the operator. The technology is already very mature and can be implemented.

[0050] The implementation principle of a servo motor structure for easy encoder replacement in this application embodiment is as follows: The user presses the knob 10 towards the motor body 1, drives the connecting rod 9 to slide along the sleeve 15, so that the limiting block 11 passes through the through slot 6 opened on the cover plate 20 and enters the mounting slot 4. Then, the knob 10 is rotated, so that the limiting block 11 rotates along the rotation slot 7 opened on the cover plate 20. Under the joint action of the clamping plate 5 and the return spring 3, the limiting block 11 is pressed and fixed. At the same time, the limiting post 12 presses against the other end of the disassembly and assembly housing 8, completing the quick fixed assembly.

Claims

1. A servo motor structure that facilitates encoder replacement, characterized in that, include: The motor body (1) is concentrically fixedly connected to the output shaft (2); A reset spring (3) is fixedly connected at one end to the mounting groove (4) opened on the motor body (1), and a clamping plate (5) is fixedly connected at the other end of the reset spring (3). Cover plate (20), the cover plate (20) is fixedly installed on the motor body (1), the cover plate (20) and the mounting groove (4) cooperate with each other, and the cover plate (20) is provided with a through groove (6) and a non-through rotating groove (7); Disassemble the outer shell (8) and the connecting rod (9). One end of the connecting rod (9) is fixedly connected to a knob (10), and the other end of the connecting rod (9) extends into the disassembled outer shell (8) through a through hole and is fixedly connected to a limiting block (11). The limiting block (11) is adapted to the through groove (6) on the cover plate. Four limiting posts (12), all four limiting posts (12) are fixedly connected to the knob (10); The encoder is installed inside the detachable housing (8) and is used to detect the mechanical motion status in real time and provide feedback on precise position and speed information.

2. The servo motor structure for easy encoder replacement according to claim 1, characterized in that: The knob (10) has a finger groove, and the finger groove is provided with anti-slip texture.

3. The servo motor structure for easy encoder replacement according to claim 1, characterized in that: A sealing waterproof ring (13) is provided between the motor body (1) and the disassembly housing (8), and the sealing waterproof ring (13) is interference-fitted with the motor body (1) and the disassembly housing (8) respectively.

4. The servo motor structure for easy encoder replacement according to claim 1, characterized in that: The inspection panel (14) is detachably installed on the disassembly and assembly housing (8) by screws and nuts.

5. The servo motor structure for easy encoder replacement according to claim 1, characterized in that: A sleeve (15) is fixedly installed inside the disassembly and assembly shell (8), and the connecting rod (9) is slidably disposed inside the sleeve (15).

6. The servo motor structure for easy encoder replacement according to claim 1, characterized in that: The encoder includes a reading head (17) fixedly mounted to a detachable housing (8) via a connecting frame (16). The reading head (17) has a rotatable code disk rotor (18) inside, which is magnetically coupled to the output shaft (2) via a floating coupling (19).

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