Low-interference brushed motor

Abstract

This utility model discloses a low-interference brushed motor, relating to the field of motor technology. It includes a motor body with an output shaft rotatably connected to its left side wall. A lubrication mechanism is provided on the motor body, comprising a cylinder fixedly mounted on the left side wall of the motor body. The cylinder has an internal cavity, and a cover plate is fixedly mounted on the inner wall of the cavity. Circular grooves are formed on both the side wall of the cylinder and the cover plate. By incorporating a detection component, the vibration frequency of the rotor can be monitored in real time. When the vibration frequency is too high, the lubrication mechanism is automatically triggered, allowing lubricating oil to flow into the circular grooves through oil leakage holes and be evenly applied to the rotor and output shaft via a sponge plate. This effectively solves the problem of insufficient rotor lubrication in existing technologies, reducing friction and wear during rotor operation, thereby improving the stability and service life of the motor.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a low-interference brushed motor. Background Technology

[0002] A brushed DC motor is a rotary electric motor that contains brushes and converts direct current (DC) energy into mechanical energy or vice versa. Unlike a brushless DC motor, the brushes are used to introduce or extract DC voltage and current. Brushed DC motors are the foundation of all motors, characterized by rapid starting, timely braking, smooth speed adjustment over a wide range, and relatively simple control circuitry. In the field of motor technology, brushed motors are a common power source widely used in various industrial and civilian equipment.

[0003] A search revealed prior art publication number CN222814339U, which discloses a low-interference brushed motor, comprising: a motor housing, a motor end cover, a circuit board, a drive unit, and an output shaft. The motor housing has an installation port, which is sealed by the motor end cover. The circuit board is mounted on the motor end cover and contains multiple electronic components. The drive unit is located inside the motor housing and is connected to the output shaft for transmission. This application has the advantages of good electromagnetic compatibility and high stability.

[0004] However, in the existing technology, it is impossible to automatically lubricate a rotor that lacks lubrication. When the rotor is running, the friction is large and the wear is aggravated, which will gradually aggravate the rotor's imbalance, thereby causing the motor to vibrate. The vibration will affect the electromagnetic performance of the motor, causing fluctuations in current and voltage, thus causing electromagnetic interference.

[0005] Therefore, based on the above-mentioned search and combined with existing technologies, a low-interference brushed motor is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a low-interference brushed motor to solve the problems mentioned in the background art.

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

[0008] A low-interference brushed motor includes: a motor body, an output shaft rotatably connected to the left side wall of the motor body, and a lubrication mechanism provided on the motor body. The lubrication mechanism includes: a cylinder, the cylinder being fixedly installed on the left side wall of the motor body, a cavity being formed inside the cylinder, a cover plate being fixedly installed on the inner wall of the cavity, and circular grooves being formed on both the side wall of the cylinder and the cover plate.

[0009] Preferably, the lubrication mechanism further includes: a sealing plate, which is disposed on the outer surface of the circular groove by a driving component, the top surface of the circular groove is provided with an oil leakage hole, and multiple sponge plates are disposed in the circular groove. The lubrication mechanism also includes a detection component.

[0010] Preferably, the detection component includes: two partitions, which are respectively fixedly installed on the inner wall of the cavity, and a protective shell is fixedly installed on the top surface of each of the two partitions.

[0011] Preferably, the detection component further includes: a fixing post, which is fixedly installed in one of the protective shells, and two contact switches are fixedly installed on the outer surface of the fixing post. A touch plate is slidably installed between the two contact switches, and springs are provided on the top and bottom surfaces of the touch plate.

[0012] Preferably, the driving component includes: a small electric actuator, which is fixedly installed in another protective housing, and the output shaft of the small electric actuator passes through the side wall of the protective housing and is connected to the outer surface of the sealing plate.

[0013] Preferably, the top surface of the cylinder is provided with an oil injection hole, which is connected to the interior of the cavity.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, by setting up a detection component, the vibration frequency of the rotor can be monitored in real time. When the vibration frequency is too high, the lubrication mechanism can be automatically triggered, allowing lubricating oil to flow into the circular groove through the oil leakage hole and be evenly applied to the rotor and output shaft by the sponge plate. This automatic lubrication mechanism effectively solves the problem of insufficient rotor lubrication in the prior art, reduces the friction and wear during rotor operation, thereby improving the stability and service life of the motor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the left side structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the disassembled structure of the cover plate and cylinder of this utility model;

[0018] Figure 3 This is a schematic diagram of the cylindrical structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the protective shell of this utility model;

[0020] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Motor body; 2. Output shaft; 3. Cylindrical shaft; 4. Cavity; 5. Cover plate; 6. Circular groove; 7. Sponge plate; 8. Oil leakage hole; 9. Sealing plate; 10. Oil injection hole; 11. Partition plate; 12. Protective shell; 13. Small electric actuator; 14. Fixing column; 15. Contact switch; 16. Touch plate; 17. Spring. Detailed Implementation

[0022] 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.

[0023] In one typical implementation of this application, please refer to Figures 1-5 As shown, a low-interference brushed motor includes: a motor body 1, an output shaft 2 rotatably connected to the left side wall of the motor body 1, a lubrication mechanism provided on the motor body 1, the lubrication mechanism including: a cylinder 3, the cylinder 3 is fixedly installed on the left side wall of the motor body 1, a cavity 4 is opened inside the cylinder 3, a cover plate 5 is fixedly installed on the inner wall of the cavity 4, and circular grooves 6 are opened on the side wall of the cylinder 3 and the cover plate 5.

[0024] The lubrication mechanism also includes a sealing plate 9, which is set on the outer surface of the circular groove 6 by a driving component. The top surface of the circular groove 6 is provided with an oil leakage hole 8. Multiple sponge plates 7 are provided in the circular groove 6. The lubrication mechanism also includes a detection component.

[0025] Based on the above features, lubricating oil can be automatically added to the rotor according to the rotor's vibration frequency. Specifically, when the detection component detects the rotor's vibration frequency, the driving component opens the oil leakage hole 8 sealed by the sealing plate 9, and the lubricating oil in the cavity 4 flows into the sponge plate 7 through the oil leakage hole 8, thereby lubricating the rotor and the output shaft 2.

[0026] The detection component includes: partition 11, two partitions 11 are provided, which are fixedly installed on the inner wall of cavity 4 respectively, and protective shells 12 are fixedly installed on the top surface of both partitions 11.

[0027] The detection assembly also includes: a fixed post 14, which is fixedly installed in one of the protective shells 12. Two contact switches 15 are fixedly installed on the outer surface of the fixed post 14. A touch plate 16 is slidably installed between the two contact switches 15. Springs 17 are provided on the top and bottom surfaces of the touch plate 16.

[0028] The vibration frequency of the rotor can be detected by the above features. Specifically, during the vibration of the rotor, the touch plate 16 will slide between the two contact switches 15. When the vibration frequency is too high, it will contact the contact switch 15, thereby turning on the drive.

[0029] The driving component includes a small electric actuator 13, which is fixedly installed in another protective housing 12. The output end of the small electric actuator 13 passes through the side wall of the protective housing 12 and is connected to the outer surface of the sealing plate 9.

[0030] Through the above features, the sealing plate 9 can seal or open the oil leakage hole 8. Specifically, when the touch plate 16 contacts the contact switch 15, it will open the small electric actuator 13 and retract the small electric actuator 13, thereby requiring the sealing plate 9 to seal the oil leakage hole 8.

[0031] The top surface of the cylinder 3 is provided with an oil injection hole 10, which is connected to the interior of the cavity 4. The oil injection hole 10 is used to inject lubricating oil into the interior of the cavity 4.

[0032] Working principle:

[0033] In use, lubricating oil is first injected into the oil filling hole 10, and the lubricating oil flows into the cavity 4. When the motor body 1 is working, the rotor drives the output shaft 2 to rotate, and the vibration of the rotor is transmitted to the detection component. Specifically, the vibration of the rotor causes the touch plate 16 to slide between the two contact switches 15. When the vibration frequency of the rotor reaches a certain value, the touch plate 16 contacts the contact switches 15 under the action of vibration, thereby triggering the small electric actuator 13. The output end of the small electric actuator 13 retracts, driving the sealing plate 9 to move upward, so that the sealing plate 9 releases the seal on the oil leakage hole 8. At this time, the lubricating oil in the cavity 4 flows into the circular groove 6 through the oil leakage hole 8, and lubricates the rotor and the output shaft 2 through the sponge plate 7 to reduce the friction and wear of the rotor. The sponge plate 7 not only serves to store the lubricating oil, but also evenly transmits the lubricating oil to the contact part between the rotor and the output shaft 2, further improving the lubrication effect. When the rotor's vibration frequency decreases to a certain level, the contact plate 16 resets under the action of the spring 17, disengaging from the contact switch 15. The small electric actuator 13 stops working, and the sealing plate 9 re-seals the oil leakage hole 8, stopping lubrication. The entire process realizes the function of automatically lubricating the rotor according to its vibration frequency, effectively reducing rotor friction and wear, improving the stability and electromagnetic performance of the motor, and reducing electromagnetic interference caused by vibration.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A low-interference brushed motor, characterized in that: include: A motor body (1) is provided, and an output shaft (2) is rotatably connected to the left side wall of the motor body (1). A lubrication mechanism is provided on the motor body (1), and the lubrication mechanism includes: A cylinder (3) is fixedly installed on the left side wall of the motor body (1). A cavity (4) is opened inside the cylinder (3). A cover plate (5) is fixedly installed on the inner wall of the cavity (4). A circular groove (6) is opened on both the side wall of the cylinder (3) and the cover plate (5).

2. The low-interference brushed motor according to claim 1, characterized in that: The lubrication mechanism also includes: A sealing plate (9) is set on the outer surface of a circular groove (6) by a driving component. An oil leakage hole (8) is opened on the top surface of the circular groove (6). Multiple sponge plates (7) are provided in the circular groove (6). The lubrication mechanism also includes a detection component.

3. The low-interference brushed motor according to claim 2, characterized in that: The detection components include: Two partitions (11) are provided and are fixedly installed on the inner wall of the cavity (4). A protective shell (12) is fixedly installed on the top surface of both partitions (11).

4. The low-interference brushed motor according to claim 3, characterized in that: The detection components also include: A fixed post (14) is fixedly installed in one of the protective shells (12). Two contact switches (15) are fixedly installed on the outer surface of the fixed post (14). A touch plate (16) is slidably installed between the two contact switches (15). Springs (17) are provided on the top and bottom surfaces of the touch plate (16).

5. The low-interference brushed motor according to claim 3, characterized in that: The driving components include: A small electric actuator (13) is fixedly installed in another protective shell (12). The output shaft of the small electric actuator (13) passes through the side wall of the protective shell (12) and is connected to the outer surface of the sealing plate (9).

6. The low-interference brushed motor according to claim 1, characterized in that: The top surface of the cylinder (3) is provided with an oil injection hole (10), which is connected to the interior of the cavity (4).

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