Miniature gear motor

By incorporating a lubricating oil circulation and filtration system and an impurity removal structure into the micro geared motor, the problems of component wear and noise caused by poor lubrication are solved, thereby improving transmission efficiency and service life.

CN223648511UActive Publication Date: 2025-12-09HANGZHOU DIREN TRANSMISSION EQUIP CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202520512492.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-21
Publication Date
2025-12-09
Estimated Expiration
2035-03-21

AI Technical Summary

Technical Problem

Existing micro geared motors have lubrication problems. Poor lubrication will accelerate component wear, reduce transmission efficiency, increase noise, and affect service life and performance.

Method used

A structure including a fixed box, a filter box, an oil storage tank, a filter plate, a water pump, a connecting pipe, a gearbox, and a servo motor is designed to realize the circulation filtration and impurity removal of lubricating oil. The lubricating oil is pumped to the filter box for filtration by the water pump, and the servo motor drives the eccentric wheel to clean the impurities on the surface of the filter plate.

Benefits of technology

It extends the service life of lubricating oil, reduces component wear, lowers noise, and improves transmission efficiency and reducer performance.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223648511U_ABST
    Figure CN223648511U_ABST
Patent Text Reader

Abstract

The utility model discloses a miniature gear motor, and relates to the technical field of gear motors. According to the miniature gear motor, by arranging the fixing box, the filter box, the oil storage box, the partition plate, the filter plate, the water pump, the connecting pipe, the gear box and the conveying pipe, the function of circularly filtering lubricating oil in the gear box is achieved, the water pump pumps the oil in the gear box into the fixing box through the connecting pipe, the filter plate filters the lubricating oil, and the cleanliness of the lubricating oil is guaranteed; the service life of the lubricating oil is prolonged, and part abrasion caused by impurities is reduced; by arranging a servo motor, a mounting plate, a connecting frame, an eccentric wheel, a servo motor, a connecting plate and a partition plate, the function of preventing the surface of the filter plate from being blocked is achieved, the filter plate moves back and forth in the filter box, impurities on the surface of the filter plate are cleaned, and the impurities are prevented from blocking the surface of the filter plate.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of geared motor technology, specifically a miniature geared motor. Background Technology

[0002] Miniature geared motors are miniaturized geared motors typically used in applications requiring precise speed and torque control. They can be DC or AC, brushed or brushless, single-phase or three-phase. Miniature geared motors generally consist of a miniature motor, a gearbox, and a controller. Existing miniature geared motors suffer from lubrication issues; poor lubrication exacerbates wear on internal components, reduces transmission efficiency, increases noise, and severely impacts the gearbox's lifespan and performance. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a miniature geared motor to solve the problems mentioned in the background section.

[0004] Existing micro geared motors have lubrication problems. Poor lubrication will aggravate the wear of components inside the micro geared motor, reduce transmission efficiency, increase noise, and seriously affect the service life and performance of the reducer.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A miniature geared motor includes a drive motor, a gearbox fixedly connected to one end of the drive motor, a transmission shaft mounted on the side of the gearbox away from the drive motor, a fixed housing fixedly connected to the top of the gearbox, a mounting plate fixedly connected inside the fixed housing, a partition slidably connected to the top of the mounting plate, a filter plate fixedly connected inside the partition, a filter box formed between the partition and one inner wall of the fixed housing, an oil storage tank formed between the partition and the other inner wall of the fixed housing, a delivery pipe fixedly connected between the oil storage tank and the gearbox, a water pump fixedly connected to the bottom of the fixed housing, one end of the water pump extending through one side of the mounting plate into the filter box, a connecting pipe fixedly connected to the side of the water pump away from the mounting plate, and the end of the connecting pipe extending through one side of the gearbox into the interior of the gearbox.

[0007] Preferably, the oil storage tank has a connecting plate that is slidably connected inside, and one end of the connecting plate is fixedly connected to the partition.

[0008] Preferably, a connecting frame is fixedly connected to the end of the connecting plate away from the partition.

[0009] Preferably, the oil tank is rotatably connected to an eccentric wheel, and the inside of the connecting frame is slidably connected to the longer end of the eccentric wheel.

[0010] Preferably, a servo motor is fixedly connected to the bottom of the mounting plate, and the output end of the servo motor passes through one side of the mounting plate and is fixedly connected to the center of one side of the eccentric wheel.

[0011] Preferably, an observation window is fixedly connected to one side of the fixed box.

[0012] Preferably, the fixed box has an inlet at the top near the oil storage tank, and a baffle is hinged to the side of the fixed box near the filter box.

[0013] This invention provides a miniature geared motor. Compared with the prior art, it has the following advantages:

[0014] 1. This miniature geared motor, by setting up a fixed box, filter box, oil storage tank, partition, filter plate, water pump, connecting pipe, gearbox and delivery pipe, realizes the function of circulating and filtering the lubricating oil in the gearbox. The water pump pumps the oil in the gearbox to the fixed box through the connecting pipe. The filter plate filters the lubricating oil to ensure the cleanliness of the lubricating oil, extend the service life of the lubricating oil, and reduce the wear of parts caused by impurities.

[0015] 2. This miniature geared motor, by incorporating a servo motor, mounting plate, connecting frame, eccentric wheel, and partition, achieves the function of preventing filter plate surface clogging. The servo motor drives the eccentric wheel to rotate, and the longer end of the eccentric wheel moves inside the connecting frame while simultaneously moving the connecting frame. The connecting frame, through the connecting plate, moves the partition back and forth within the filter box, and the partition moves the filter plate, cleaning impurities from the filter plate surface and preventing impurities from clogging the filter plate surface. Attached Figure Description

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

[0017] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of the fixed box of this utility model. Figure 1 ;

[0019] Figure 4 This is a schematic diagram of the internal structure of the fixed box of this utility model. Figure 2 ;

[0020] Figure 5 This is a partial structural schematic diagram of the present invention.

[0021] In the diagram: 1. Drive motor; 2. Gearbox; 3. Connecting pipe; 4. Transmission shaft; 5. Fixed box; 6. Inlet; 7. Observation window; 8. Filter plate; 9. Filter box; 10. Oil storage tank; 11. Connecting plate; 12. Connecting frame; 13. Eccentric wheel; 14. Servo motor; 15. Water pump; 16. Baffle; 17. Partition; 18. Mounting plate; 19. Conveying pipe. 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] Please see Figures 1-5 This utility model provides a technical solution: a miniature geared motor, including a drive motor 1, a gearbox 2 fixedly connected to one end of the drive motor 1, a reduction gear installed inside the gearbox 2, a transmission shaft 4 installed on the side of the gearbox 2 away from the drive motor 1, a fixed box 5 fixedly connected to the top of the gearbox 2, an mounting plate 18 fixedly connected inside the fixed box 5 to divide the usable space inside the fixed box 5, a partition 17 slidably connected to the top of the mounting plate 18, a filter plate 8 fixedly connected inside the partition 17, the filter plate 8 being located at the top of the partition 17, so that heavier impurities in the oil in the filter box 9 settle between the inner wall of the fixed box 5 and the bottom of the partition 17, and the partition 17 and one side inner wall of the fixed box 5 are... The filter box 9 is formed by the partition plate 8 to filter the oil. The oil storage tank 10 is formed between the partition plate 17 and the inner wall of the other side of the fixed box 5 to store the filtered oil. The oil storage tank 10 is fixedly connected to the gearbox 2 by the delivery pipe 19 to send the filtered lubricating oil into the gearbox 2 to lubricate the gears. The bottom of the fixed box 5 is fixedly connected to the water pump 15. One end of the water pump 15 extends through one side of the mounting plate 18 into the filter box 9. The side of the water pump 15 away from the mounting plate 18 is fixedly connected to the connecting pipe 3. The end of the connecting pipe 3 away from the water pump 15 extends through one side of the gearbox 2 into the interior of the gearbox 2. The water pump 15 pumps the lubricating oil in the gearbox 2 into the filter box 9 through the connecting pipe 3.

[0024] Furthermore, a connecting plate 11 is slidably connected inside the oil storage tank 10. One end of the connecting plate 11 is fixedly connected to the partition 17, and the connecting plate 11 moves with the partition 17 inside the filter box 9.

[0025] Furthermore, a connecting frame 12 is fixedly connected to the end of the connecting plate 11 away from the partition 17, and the connecting plate 11 moves, causing the connecting frame 12 to move as well.

[0026] Furthermore, an eccentric wheel 13 is rotatably connected inside the oil tank 10, and the inside of the connecting frame 12 is slidably connected to the longer end of the eccentric wheel 13. The eccentric wheel 13 rotates, causing the connecting frame 12 to move.

[0027] Furthermore, a servo motor 14 is fixedly connected to the bottom of the mounting plate 18. The output end of the servo motor 14 passes through one side of the mounting plate 18 and is fixedly connected to the center of one side of the eccentric wheel 13. After the servo motor 14 is turned on, it drives the eccentric wheel 13 to rotate.

[0028] Furthermore, an observation window 7 is fixedly connected to one side of the fixed box 5 to observe the oil level inside the fixed box 5 and prevent too much oil from being poured in at once.

[0029] Furthermore, the fixed box 5 has an inlet 6 at the top near the oil storage tank 10 to better pour oil into the fixed box 5. A baffle 16 is hinged to the side of the fixed box 5 near the filter box 9. By removing the baffle 16 from one side of the fixed box 5, impurities in the filter box 9 can be cleaned.

[0030] In use, lubricating oil is injected into the fixed box 5 through the inlet 6. The oil in the fixed box 5 enters the gearbox 2 through the delivery pipe 19 to lubricate the gears in the gearbox 2. The water pump 15 is turned on, and the water pump 15 pumps the oil in the gearbox 2 back to the filter box 9. The oil in the filter box 9 is filtered by the filter plate 8 and returns to the oil storage tank 10. Then it returns to the gearbox 2 again through the delivery pipe 19 to prevent impurities in the lubricating oil from affecting the rotation of the gears in the gearbox 2 after long-term use. The servo motor 14 is turned on, and the servo motor 14 drives the eccentric wheel 13 to rotate. The longer end of the eccentric wheel 13 moves inside the connecting frame 12 while moving the connecting frame 12. The connecting frame 12 moves back and forth in the filter box 9 through the connecting plate 11 and the partition plate 17. The partition plate 17 moves the filter plate 8 to clean the impurities on the surface of the filter plate 8 and prevent the impurities from clogging the surface of the filter plate 8.

[0031] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A miniature geared motor, comprising a drive motor (1), characterized in that: A gearbox (2) is fixedly connected to one end of the drive motor (1). A transmission shaft (4) is installed on the side of the gearbox (2) away from the drive motor (1). A fixed box (5) is fixedly connected to the top of the gearbox (2). An installation plate (18) is fixedly connected inside the fixed box (5). A partition (17) is slidably connected to the top of the installation plate (18). A filter plate (8) is fixedly connected inside the partition (17). A filter box (9) is formed between the partition (17) and one inner wall of the fixed box (5). An oil storage tank (10) is formed between the inner walls of the other side of the fixed box (5). A delivery pipe (19) is fixedly connected between the oil storage tank (10) and the gearbox (2). A water pump (15) is fixedly connected to the bottom of the interior of the fixed box (5). One end of the water pump (15) extends through one side of the mounting plate (18) into the filter box (9). A connecting pipe (3) is fixedly connected to the side of the water pump (15) away from the mounting plate (18). The end of the connecting pipe (3) away from the water pump (15) extends through one side of the gearbox (2) into the interior of the gearbox (2).

2. A miniature geared motor according to claim 1, characterized in that: The oil storage tank (10) is internally slidably connected to a connecting plate (11), one end of which is fixedly connected to a partition plate (17).

3. A miniature geared motor according to claim 2, characterized in that: The connecting plate (11) is fixedly connected to a connecting frame (12) at the end away from the partition (17).

4. A miniature geared motor according to claim 3, characterized in that: An eccentric wheel (13) is rotatably connected inside the oil storage tank (10), and the inside of the connecting frame (12) is slidably connected to the longer end of the eccentric wheel (13).

5. A miniature geared motor according to claim 4, characterized in that: A servo motor (14) is fixedly connected to the bottom of the mounting plate (18), and the output end of the servo motor (14) passes through one side of the mounting plate (18) and is fixedly connected to the center of one side of the eccentric wheel (13).

6. A miniature geared motor according to claim 1, characterized in that: An observation window (7) is fixedly connected to one side of the fixed box (5).

7. A miniature geared motor according to claim 1, characterized in that: The fixed box (5) has an inlet (6) at the top near the oil storage tank (10), and a baffle (16) is hinged to the side of the fixed box (5) near the filter box (9).