CN211550408U

CN211550408U - Seat motor transmission system

Info

Publication number: CN211550408U
Application number: CN201922247970.2U
Authority: CN
Inventors: 王家祥; 焦阳; 倪贵全
Original assignee: Shanghai Taichong Electric Co ltd
Current assignee: Shanghai Taichong Electric Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-09-22
Anticipated expiration: 2029-12-16

Abstract

The utility model relates to a motor drive system especially indicates a seat motor drive system, including gear box and motor body, its characterized in that: an inner gear ring internally provided with a four-stage planetary gear set is arranged on the gear box, the four-stage planetary gear set is in transmission connection with the motor body, and planetary gears on the four-stage planetary gear set are all meshed with the inner gear ring. The utility model has the advantages that: according to the seat motor transmission system, four stages of planetary transmission are adopted, an inner gear ring is shared, the transmission ratio of each stage of the four stages of transmission is consistent, the tooth shapes of all the planetary gears are designed to be consistent and are all meshed with the inner gear ring, and an inner gear ring is shared to form a whole, so that the structure is more stable, the installation process is simple and convenient, and the cost of parts and dies is reduced.

Description

Seat motor transmission system

Technical Field

The utility model relates to a motor drive system especially indicates a seat motor drive system.

Background

The seat motor is an output end, the rotating speed is low, and the torque is large. In order to achieve the purpose of large transmission ratio of the design of the motor mechanism, a multi-stage worm gear or a multi-stage planetary gear train design is generally adopted.

The worm gear design, each grade of drive ratio all can be bigger, probably only need tertiary transmission, but the inefficiency, generally only 40% ~ 68%, and planet wheel efficiency is generally 80 ~ 85%.

The multi-stage transmission design generally increases the gear module gradually from the first stage, the second stage and the third stage. Since the torque of the transmission system increases gradually further to the rear. The last stage is typically subjected to forces above 100 Nm. While the first stage is only about 10 Nm. The module is gradually increased by the gear train design of the general traditional idea. Therefore, the whole set of gear train design has a plurality of different modules, and different sizes of the inner gear rings exist. Increasing the difficulty of opening the die.

If the traditional design is adopted, a plurality of parts are used in the motor transmission part, so that the cost of the parts is increased, the difficulty is increased for assembling the motor transmission part, the production cost of the motor is increased, and the transmission efficiency is not high, so that the improvement is made, and the seat motor transmission system is provided.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a seat motor transmission system.

In order to solve the technical problem, the utility model provides a seat motor transmission system, this motor transmission system include gear box and motor body be equipped with an internal ring gear that has level four planetary gear set on the gear box, level four planetary gear set with the motor body transmission links to each other, planetary gear on the level four planetary gear set all with the ring gear meshes mutually.

The four-stage planetary gear set comprises three planetary discs which are mutually overlapped in the same axial direction, one face of each planetary disc is provided with the planetary gear, the other face of each planetary disc is provided with the sun gear, and an axle seat provided with the planetary gears, wherein at least one planetary gear is in tooth joint with the power output gear of the motor body and transmits power output by the motor body, and the rest planetary gears are in tooth joint with the sun gear and the inner gear ring to jointly form a power transmission system. The planetary disk is also provided with at least one supporting column which is positioned on the same plane with the planetary gear.

The utility model has the advantages that: according to the seat motor transmission system, four stages of planetary transmission are adopted, an inner gear ring is shared, the transmission ratio of each stage of the four stages of transmission is consistent, the tooth shapes of all the planetary gears are designed to be consistent and are all meshed with the inner gear ring, and an inner gear ring is shared to form a whole, so that the structure is more stable, the installation process is simple and convenient, and the cost of parts and dies is reduced.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a first structural schematic diagram of a seat motor transmission system according to the present invention;

fig. 2 is a second schematic structural view of the four-stage planetary gear set and the ring gear of the present invention;

fig. 3 is a schematic diagram of a planetary disk structure of the present invention;

fig. 4 is a schematic view of the shaft seat structure of the present invention.

In the figure: 1. a motor body; 2. a gear case; 11. a power output gear; 21. an inner gear ring; 22. a four-stage planetary gear set; 23. primary transmission; 24. secondary transmission; 25. three-stage transmission; 26. a shaft seat; 27. a planetary gear; 28. a support pillar; 29. a planetary plate; 30. a sun gear; 31. a connecting shaft; 211. internal teeth; 261. and the shaft hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the invention. However, the technical solution claimed in the present invention can be realized without these technical details and various changes and modifications based on the following embodiments.

Referring to fig. 1-4, the present invention provides a seat motor transmission system, which comprises a motor body 1 and a gear box 2, wherein an inner gear ring 21 is installed inside the gear box 2, a four-stage planetary gear set 22 is installed inside the inner gear ring 21, and the four-stage planetary gear set 22 is composed of three planetary disks 29 and a shaft seat 26 which are mutually overlapped in the same axial direction. Three planetary disks which are mutually overlapped in the same axial direction are sequentially subdivided into a first-stage transmission 23, a second-stage transmission 24 and a third-stage transmission 25, and form a four-stage planetary gear set 22 together with a shaft seat 26, wherein one side of the shaft seat 26 is provided with a planetary gear 27 and four supporting columns 28 which are positioned on the same plane with the planetary gear 27, the planetary gear 27 is movably sleeved on one of the supporting columns, and the center of the other side is provided with a slightly protruding shaft hole 261 for installing a connecting shaft 31 and outputting power through the connecting shaft 31. Each stage of transmission is provided with a planetary gear 27 and at least one supporting column 28 which is positioned on the same plane with the planetary gear 27 on one side, and is provided with a sun gear 30 on the other side, and the satellite gear 27 on each stage of transmission is also movably sleeved on one supporting column 28. In the whole four-stage planetary gear set 22, the planetary gear 27 of the first-stage transmission 23 is in tooth connection with the power output gear 11 of the motor body 1, the planetary gear 27 of the second-stage transmission 24 is in tooth connection with the sun gear 30 of the first-stage transmission 23, and so on, the planetary gear 27 of the third-stage transmission 25 is in tooth connection with the sun gear 30 of the second-stage transmission 24, the planetary gear 27 of the shaft seat 26 is in tooth connection with the sun gear 30 of the third-stage transmission 25, the shaft hole 261 of the shaft seat 26 is fixedly sleeved on the connecting shaft 31 and connected with the output structure of the gear box 2, and all the planetary gears 27 in the four-stage planetary gear set 22 are in tooth connection with the internal teeth 211 of the internal gear 21.

When the power transmission device works, the power of the motor body 1 is transmitted to the planetary gear 27 of the primary transmission 23 through the power output gear 11, the satellite gear 27 travels on the internal teeth 211 of the internal gear ring 21 around the power output gear 11, so that the planetary disk 29 of the primary transmission 23 and the sun gear 30 of the primary transmission 23 on the other surface of the planetary disk 29 are driven to rotate, the sun gear 30 of the rotating primary transmission 23 drives the planetary gear 27 of the secondary transmission 24 in tooth connection with the sun gear to travel on the internal teeth 211 of the internal gear ring 21, and the like, until the power of the motor body 1 is transmitted to the planetary gear 27 of the shaft seat 26, so that the shaft seat 26 is driven to rotate, and the shaft seat 26 outputs the power to the output structure of the gear box 2 through the connecting shaft 31.

It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.

Claims

1. The utility model provides a seat motor transmission system, includes gear box and motor body, its characterized in that: an inner gear ring internally provided with a four-stage planetary gear set is arranged on the gear box, the four-stage planetary gear set is in transmission connection with the motor body, and planetary gears on the four-stage planetary gear set are all meshed with the inner gear ring.

2. A seat motor drive system as claimed in claim 1, wherein: the four-stage planetary gear set comprises three planetary discs which are mutually overlapped in the same axial direction, one face of each planetary disc is provided with the planetary gear, and the other face of each planetary disc is provided with the sun gear, and a shaft seat provided with the planetary gears, wherein at least one planetary gear is in tooth joint with the power output gear of the motor body.

3. A seat motor drive system as claimed in claim 2, wherein: the sun gear is in gear joint with the planet gear.

4. A seat motor drive system as claimed in claim 2, wherein: the planetary disk is also provided with at least one supporting column which is positioned on the same plane with the planetary gear.