Silent servo motor

Abstract

The utility model relates to the technical field of servo motors, and discloses a mute servo motor comprising a rotating rod, the outer wall of the rotating rod is rotatably connected with a bearing, the outer wall of the bearing is slidably connected with a lubricating sleeve, the inner side of the lubricating sleeve is provided with an accommodating cavity, the front side of the lubricating sleeve is provided with an input port, and the input port is connected with the bearing. The input port is communicated with the containing cavity, the inner side of the input port is in sliding connection with a sealing plug, a plurality of small holes are formed in the inner wall of the lubricating sleeve, a shell is arranged on the outer wall of the rotating rod, a noise reduction mechanism is arranged on the outer wall of the shell, and the noise reduction mechanism is used for reducing noise generated in the operation process of the servo motor. According to the lubricating device, the special lubricating sleeve is designed to surround the bearing, the containing cavity is formed for containing lubricating oil, meanwhile, the small holes are formed, lubricating agents can slowly seep out, continuous lubrication on the rotating rod and the bearing is achieved, and vibration and noise between the rotating rod and the bearing are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of servo motors, in particular to a silent servo motor. Background Art

[0002] A motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to convert electrical energy into mechanical energy to drive other equipment. A servo motor is a motor that can precisely control speed and position.

[0003] In the structure of servo motors, bearings play a key role in support and rotation. However, in actual use, due to various reasons, bearings may wear or be poorly lubricated. When bearings wear, the smoothness of their surface will decrease, and the friction during rotation will increase, resulting in abnormal friction noise. This friction noise will increase the overall noise level of the motor.

[0004] Currently, lubricant is added manually on a regular basis to ensure good lubrication of bearings and rotating shafts. However, this method is not only time-consuming and labor-intensive, but also difficult to ensure uniform addition and continuous supply of lubricant, which can easily lead to insufficient or excessive lubrication. Therefore, a silent servo motor is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a silent servo motor, which aims to improve the problem in the prior art of manual regular addition of lubricant, which makes it difficult to ensure uniform addition and continuous supply of lubricant.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a silent servo motor, comprising a rotating rod, the outer wall of the rotating rod is rotatably connected to a bearing, the outer wall of the bearing is slidably connected to a lubricating sleeve, the inner side of the lubricating sleeve is provided with a accommodating cavity, the front side of the lubricating sleeve is provided with an input port, the input port is communicated with the accommodating cavity, the inner side of the input port is slidably connected to a sealing plug, the inner wall of the lubricating sleeve is provided with a plurality of small holes, the outer wall of the rotating rod is provided with an outer shell, the outer wall of the outer shell is provided with a noise reduction mechanism, and the noise reduction mechanism is used to reduce the noise generated during the operation of the servo motor.

[0007] As a further description of the above technical solution:

[0008] The noise reduction mechanism includes a noise reduction sponge, the inner side of the noise reduction sponge is fixedly connected to a memory metal block, the outer walls of the noise reduction sponge and the memory metal block are provided with connecting grooves, both ends of the noise reduction sponge are fixedly connected to connecting plates, the outer walls of the two connecting plates are provided with multiple sliding grooves, the inner sides of the multiple sliding grooves are slidably connected to sliding columns, the two ends of the multiple sliding columns are threadedly connected to limit plates, the front and rear sides of the inner wall of the memory metal block are fixedly connected to inclined plates, the front and rear sides of the outer wall of the shell are provided with inclined grooves, and the outer wall of the inclined plate is slidably connected to the inner side of the inclined groove.

[0009] As a further description of the above technical solution:

[0010] The outer wall of the sealing plug is fixedly connected with a sealing ring, and the outer wall of the sealing ring is slidably connected to the inner side of the input port.

[0011] As a further description of the above technical solution:

[0012] The middle portion of the rotating rod is fixedly connected to a rotor, and the outer wall of the rotor is rotatably connected to a stator.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the stator is fixedly connected to the inner side of the shell, and an encoder is arranged on the right side of the inner wall of the shell.

[0015] As a further description of the above technical solution:

[0016] A mounting plate is fixedly connected to the left side of the shell, and a flange is fixedly connected to the left side of the mounting plate.

[0017] As a further description of the above technical solution:

[0018] Through holes are provided at the four left corners of the mounting plate, and the through holes are used for connecting with other components.

[0019] As a further description of the above technical solution:

[0020] A heat dissipation hole is provided on the right side of the shell, and a filter is provided inside the heat dissipation hole.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present invention, a special lubrication sleeve is designed to surround the bearing. A receiving cavity is provided to hold the lubricating oil, and a plurality of small holes are provided to allow the lubricant to seep out slowly, thereby achieving continuous lubrication of the rotating rod and the bearing. Good lubrication can reduce the vibration and noise between the rotating rod and the bearing, making the motor run more smoothly.

[0023] 2. In the present invention, the memory metal block can automatically adjust its shape according to the temperature changes during motor operation, ensuring that it is always tightly connected to the shell and adapting to different operating temperature environments. At the same time, the memory metal block provides better support for the noise reduction sponge, ensuring that it can maintain good sound absorption performance during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional schematic diagram of a silent servo motor proposed by the utility model;

[0025] Figure 2 This is a schematic diagram of the partial structure of a silent servo motor proposed in the present invention;

[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 This is a cross-sectional view of a lubricating sleeve of a silent servo motor proposed in the present invention;

[0028] Figure 5 This is a schematic structural diagram of a rotor of a silent servo motor proposed in the present invention;

[0029] Figure 6 This is a structural schematic diagram of a noise reduction mechanism for a silent servo motor proposed in the utility model.

[0030] Legend:

[0031] 1. Rotating rod; 2. Noise reduction mechanism; 201. Noise reduction sponge; 202. Memory metal block; 203. Inclined plate; 204. Inclined groove; 205. Connecting groove; 206. Connecting plate; 207. Sliding column; 208. Limiting plate; 209. Sliding groove; 3. Bearing; 4. Lubricating sleeve; 5. Accommodating chamber; 6. Input port; 7. Sealing plug; 8. Sealing ring; 9. Small hole; 10. Rotor; 11. Stator; 12. Encoder; 13. Housing; 14. Heat dissipation hole; 15. Mounting plate; 16. Flange; 17. Through hole. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Refer to the attached Figure 2 , Attachment Figure 3 and attached Figure 4 The utility model provides an embodiment: a silent servo motor, including a rotating rod 1, the outer wall of the rotating rod 1 is rotatably connected to a bearing 3, the outer wall of the bearing 3 is slidably connected to a lubricating sleeve 4, the inner side of the lubricating sleeve 4 is provided with a receiving cavity 5, the front side of the lubricating sleeve 4 is provided with an input port 6, the input port 6 is connected to the receiving cavity 5, the inner side of the input port 6 is slidably connected to a sealing plug 7, and the inner wall of the lubricating sleeve 4 is provided with a plurality of small holes 9. By adding lubricant into the receiving cavity 5 and flowing into the bearing 3 through the small holes 9, the friction between the rotating rod 1 and the shaft can be reduced. The outer wall of the rotating rod 1 is provided with a shell 13, and the outer wall of the shell 13 is provided with a noise reduction mechanism 2, which is used to reduce the noise generated during the operation of the servo motor; the outer wall of the sealing plug 7 is fixedly connected to the sealing ring 8, and the outer wall of the sealing ring 8 is slidably connected to the inner side of the input port 6; the middle part of the rotating rod 1 is fixedly connected to the rotor 10, and the outer wall of the rotor 10 is rotatably connected to the stator 11; the outer wall of the stator 11 is fixedly connected to the inner side of the shell 13, and the encoder 12 is provided on the right side of the inner wall of the shell 13;

[0034] Specifically, by arranging a lubricating sleeve 4 on the outer wall of the bearing 3, the lubricant in the accommodating cavity 5 seeps out through the small hole 9 to lubricate the contact surface between the rotating rod 1 and the bearing 3. Good lubrication can reduce the vibration and noise between the rotating rod 1 and the bearing 3, making the motor run more smoothly. The input port 6 of the lubricating sleeve 4 is designed to make it very convenient to add lubricant. It is only necessary to open the sealing plug 7 to inject lubricant into the accommodating cavity 5 without disassembling the motor or performing complicated operations. This greatly reduces the difficulty and cost of maintenance and improves maintenance efficiency. The sealing ring 8 on the outer wall of the sealing plug 7 ensures that the input port 6 prevents lubricant leakage in a sealed state, keeps the motor clean and safe, and at the same time, avoids waste of lubricant and saves resources.

[0035] Refer to the attached Figure 1 and attached Figure 6 , the noise reduction mechanism 2 includes a noise reduction sponge 201, which can effectively absorb the noise generated by the motor running. The inner side of the noise reduction sponge 201 is fixedly connected to the memory metal block 202, and the outer walls of the noise reduction sponge 201 and the memory metal block 202 are provided with connecting grooves 205. Both ends of the noise reduction sponge 201 are fixedly connected to connecting plates 206, and the outer walls of the two connecting plates 206 are provided with multiple sliding grooves 209. The inner sides of the multiple sliding grooves 209 are slidably connected with sliding posts 207. The ends of the multiple sliding posts 207 are threadedly connected to the limit plates 208, and the size can be adjusted according to actual conditions. The front and rear sides of the inner wall of the memory metal block 202 are fixedly connected with inclined plates 203, and the front and rear sides of the outer wall of the shell 13 are provided with inclined grooves 204. The outer wall of the inclined plate 203 is slidably connected to the inner side of the inclined groove 204, and the inclined plate 203 can slide in the inclined groove 204 to adapt to the changes of the memory metal block 202;

[0036] Specifically, the noise reduction sponge 201 has a porous structure and can effectively absorb the noise generated by the operation of the motor. When the noise propagates to the noise reduction sponge 201, the sound waves are constantly reflected, refracted and rubbed in its pores, converting the sound energy into heat energy, thereby significantly reducing the intensity of the noise. When the motor generates heat and the surrounding temperature rises, the memory metal block 202 changes shape. This deformation causes the internal inclined plate 203 to slide in the inclined groove 204 on the outer wall of the shell 13, thereby enhancing the stability of the overall structure and further reducing the leakage of noise. At the same time, the presence of the memory metal block 202 also provides better support for the noise reduction sponge 201, ensuring that it can maintain good sound absorption performance during long-term use. The memory metal block 202 02 can automatically adjust its shape as the temperature changes, so that it always maintains a close connection with the housing 13 during the operation of the motor. This feature enables the noise reduction mechanism 2 to adapt to different operating temperatures. No matter in a low temperature environment or a high temperature environment, it can effectively reduce noise. The connecting groove 205 provides a certain deformation space for both during the shape change process. The connecting plate 206 and the slide groove 209 and slide column 207 structure thereon can adjust the size according to actual conditions when the memory metal block 202 is deformed and the noise reduction sponge 201 absorbs noise. At the same time, the limit plates 208 at both ends of the slide column 207 also prevent the slide column 207 from falling off from the slide groove 209, further improving the reliability of the structure.

[0037] Refer to the attached Figure 1 and attached Figure 2 The left side of the housing 13 is fixedly connected to a mounting plate 15, and the left side of the mounting plate 15 is fixedly connected to a flange 16; through holes 17 are opened at the four corners on the left side of the mounting plate 15, and the through holes 17 are used to connect with other components; a heat dissipation hole 14 is opened on the right side of the housing 13, and a filter is set inside the heat dissipation hole 14;

[0038] Specifically, the setting of the mounting plate 15 and the flange 16 provides a convenient installation method for the servo motor. Through the through holes 17 at the four corners on the left side of the mounting plate 15, bolts and other connectors can be used to firmly connect the motor with other components. The heat dissipation holes 14 on the right side of the shell 13 provide a heat dissipation channel for the motor, which can promptly dissipate the heat generated during the operation of the motor. Good heat dissipation performance can ensure that the motor operates within the normal operating temperature range, avoiding motor performance degradation, shortened life or even damage due to overheating.

[0039] Working principle: When the servo motor is working, the current generates a rotating magnetic field through the stator 11, causing the rotor 10 to start rotating under the action of the magnetic field, and the rotating rod 1 rotates together with the rotor 10, thereby realizing the power output of the motor. In this process, relative rotation will occur between the rotating rod 1 and the bearing 3. A lubricating sleeve 4 is provided on the outer wall of the bearing 3. By opening the sealing plug 7 at the input port 6, lubricant can be injected into the accommodating cavity 5 from the input port 6. The sealing ring 8 on the outer wall of the sealing plug 7 ensures that the input port 6 is in a sealed state when the sealing plug 7 is closed to prevent lubricant leakage. The lubricant in the accommodating cavity 5 slowly seeps out through the multiple small holes 9 on the inner wall of the lubricating sleeve 4, lubricating the contact surface between the rotating rod 1 and the bearing 3, thereby reducing the noise generated by friction between the two.

[0040] When the motor is not running, the noise reduction sponge 201 and the memory metal block 202 are in a relatively stable state. The noise reduction sponge 201 has a porous structure and can absorb the noise generated by the motor when it is running. The memory metal block 202 maintains its initial shape at this time, and the inclined plate 203 is located in the inclined groove 204, maintaining a stable connection between the noise reduction mechanism 2 and the housing 13. When the motor is running, heat is generated, causing the temperature around the motor to rise. At this time, due to its characteristics, the memory metal block 202 will change shape with the change in temperature. As the temperature rises, the memory metal block 202 begins to expand or undergo a specific deformation. During its deformation, the inclined plate 203 inside the memory metal block 202 will slide within the inclined groove 204 on the front and rear sides of the outer wall of the housing 13, enhancing the stability of the overall structure. The connecting groove 205 on the outer wall of the noise reduction sponge 201 and the memory metal block 202 provides a certain deformation space for both during the shape change process, preventing structural damage caused by deformation. At the same time, the noise generated during the operation of the motor is absorbed by the noise reduction sponge 201, thereby effectively reducing the noise intensity.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A silent servo motor, comprising a rotating rod (1), characterized in that: The outer wall of the rotating rod (1) is rotatably connected to a bearing (3), the outer wall of the bearing (3) is slidably connected to a lubricating sleeve (4), the inner side of the lubricating sleeve (4) is provided with a receiving cavity (5), the front side of the lubricating sleeve (4) is provided with an input port (6), the input port (6) is communicated with the receiving cavity (5), the inner side of the input port (6) is slidably connected to a sealing plug (7), the inner wall of the lubricating sleeve (4) is provided with a plurality of small holes (9), the outer wall of the rotating rod (1) is provided with a shell (13), the outer wall of the shell (13) is provided with a noise reduction mechanism (2), and the noise reduction mechanism (2) is used to reduce the noise generated during the operation of the servo motor.

2. A silent servo motor according to claim 1, characterized in that: The noise reduction mechanism (2) comprises a noise reduction sponge (201), the inner side of the noise reduction sponge (201) is fixedly connected to a memory metal block (202), the outer walls of the noise reduction sponge (201) and the memory metal block (202) are both provided with a connection groove (205), both ends of the noise reduction sponge (201) are fixedly connected to a connection plate (206), the outer walls of the two connection plates (206) are both provided with a plurality of sliding grooves (209), the inner sides of the plurality of sliding grooves (209) are both slidably connected to a sliding column (207), the ends of the plurality of sliding columns (207) are threadedly connected to a limit plate (208), the front and rear sides of the inner wall of the memory metal block (202) are both fixedly connected to an inclined plate (203), the front and rear sides of the outer wall of the shell (13) are both provided with an inclined groove (204), and the outer wall of the inclined plate (203) is slidably connected to the inner side of the inclined groove (204).

3. The silent servo motor according to claim 1, characterized in that: The outer wall of the sealing plug (7) is fixedly connected to a sealing ring (8), and the outer wall of the sealing ring (8) is slidably connected to the inner side of the input port (6).

4. The silent servo motor according to claim 1, characterized in that: The middle portion of the rotating rod (1) is fixedly connected to a rotor (10), and the outer wall of the rotor (10) is rotatably connected to a stator (11).

5. The silent servo motor according to claim 4, characterized in that: The outer wall of the stator (11) is fixedly connected to the inner side of the shell (13), and an encoder (12) is provided on the right side of the inner wall of the shell (13).

6. The silent servo motor according to claim 1, characterized in that: A mounting plate (15) is fixedly connected to the left side of the housing (13), and a flange (16) is fixedly connected to the left side of the mounting plate (15).

7. The silent servo motor according to claim 6, characterized in that: Through holes (17) are provided at the four left corners of the mounting plate (15), and the through holes (17) are used for connecting with other components.

8. The silent servo motor according to claim 1, characterized in that: A heat dissipation hole (14) is provided on the right side of the housing (13), and a filter is provided on the inner side of the heat dissipation hole (14).

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