# US 11,441,649 B2 · Eccentric gear structure

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- Number: US 11,441,649 B2
- Document ID: US11441649B2
- Status: Granted
- Kind: B2
- Application number: 16/686,270
- Filed: 2019-11-18
- Published: 2021-04-01
- Granted: 2022-09-13
- Earliest claimed: 2019-09-30
- Assignees: Guangzhou Antu Electric Co., Ltd.
- Applicants: Guangzhou Antu Electric Co., Ltd.
- Inventors: Xinhua Kuang
- Web page: https://patentgrep.com/patent/US11441649B2

## CPC

- F16H 35/00: Gearings or mechanisms with other special functional features
- F16H 55/17: Toothed wheels (worm wheels F16H55/22; chain wheels F16H55/30)
- F16H 2035/001: {Gearings with eccentrically mounted gears, e.g. for cyclically varying ratio}
- F16H 2055/065: {Moulded gears, e.g. inserts therefor}
- F16H: GEARING

## Abstract

An eccentric gear structure includes a gear block and an eccentric block embedded into the gear block; the gear block is provided with an accommodating cavity suitable for embedment of the eccentric block, the eccentric block is provided with a first through hole and a second through hole that deviates from the first through hole; an embedding hole is provided at an axis of the gear block, and an axis of the first through hole coincides with an axis of the embedding hole. The eccentric gear structure ensures the quality of the product through the embedded structure.

## Claims

### Claim 1

An eccentric gear structure, wherein the eccentric gear structure comprises a gear block and an eccentric block embedded into the gear block, the gear block is provided with an accommodating cavity suitable for embedment of the eccentric block, the eccentric block is provided with a first through hole and a second through hole that deviates from the first through hole, an embedding hole is provided at an axis of the gear block, and an axis of the first through hole coincides with an axis of the embedding hole, a side of the embedding hole away from the accommodating cavity is provided with a boss, and a distance between the axis of the first through hole and an axis of the second through hole is in a range of 7 to 9 mm.

### Claim 2 (depends on 1)

The eccentric gear structure of claim 1, wherein the eccentric block has a fan-like shape, the axis of the first through hole coincides with an axis of a central angle of the eccentric block, and the second through hole is disposed on a position away from an arc surface of the fan-like shape.

### Claim 3 (depends on 1)

The eccentric gear structure of claim 1, wherein the eccentric block is fixed within the accommodating cavity by rivets.

### Claim 4 (depends on 1)

The eccentric gear structure of claim 1, wherein the accommodating cavity has a depth of 6 to 7 mm.

### Claim 5 (depends on 4)

The eccentric gear structure of claim 4, wherein a thickness of the eccentric block is 2 to 3 mm greater than the depth of the accommodating cavity.

### Claim 6 (depends on 1)

The eccentric gear structure of claim 1, wherein a side of the second through hole away from the accommodating cavity is provided with a boss.

### Claim 7 (depends on 1)

The eccentric gear structure of claim 1, wherein the gear block is made of plastic.

### Claim 8 (depends on 1)

The eccentric gear structure of claim 1, wherein a contour of the accommodating cavity is the same as an outer contour of the eccentric block.