阅读说明：本技术 一种消间隙连续式齿轮机构 (Clearance-eliminating continuous gear mechanism ) 是由 王明祥 姬祖春 于 2020-06-06 设计创作，主要内容包括：本发明公开了一种消间隙连续式齿轮机构,包括第一内齿板、第二内齿板、外齿轮以及偏心凸轮组件；所述外齿轮设有一通孔,所述凸偏心凸轮组件位于所述通孔内,所述第一内齿板和第二内齿板相互扣合围合出外齿轮容置腔；所述外齿轮容置于所述外齿轮容置腔内；所述偏心凸轮组件包括凸轮以及至少一个楔形块,在所述凸轮的两端面上分别沿所述凸轮的回转轴线延伸出第一回转轴和第二回转轴,至少在所述第一回转轴上设有旋动部；所述第一回转轴的外周面与所述通孔的内周面之间具有一楔形块容置腔,所述楔形块容置于所述楔形块容置腔内,所述楔形块与所述第一回转轴的外周面以及所述通孔的内周面均接触。(The invention discloses a gap eliminating continuous gear mechanism which comprises a first inner toothed plate, a second inner toothed plate, an outer gear and an eccentric cam assembly, wherein the first inner toothed plate is arranged on the outer gear; the outer gear is provided with a through hole, the convex eccentric cam component is positioned in the through hole, and the first inner toothed plate and the second inner toothed plate are mutually buckled to enclose the outer gear accommodating cavity; the outer gear is accommodated in the outer gear accommodating cavity; the eccentric cam component comprises a cam and at least one wedge-shaped block, a first rotating shaft and a second rotating shaft extend out of two end faces of the cam along the rotating axis of the cam respectively, and at least a rotating part is arranged on the first rotating shaft; a wedge block accommodating cavity is formed between the outer peripheral surface of the first rotating shaft and the inner peripheral surface of the through hole, the wedge block is accommodated in the wedge block accommodating cavity, and the wedge block is in contact with the outer peripheral surface of the first rotating shaft and the inner peripheral surface of the through hole.)

1. The utility model provides a clearance continuous type gear mechanism that disappears which characterized in that: the eccentric cam component comprises a first inner toothed plate, a second inner toothed plate, an outer gear and an eccentric cam component; the outer gear is provided with a through hole, the convex eccentric cam component is positioned in the through hole, and the first inner toothed plate and the second inner toothed plate are mutually buckled to enclose the outer gear accommodating cavity; the outer gear is accommodated in the outer gear accommodating cavity;

the eccentric cam component comprises a cam and at least one wedge-shaped block, a first rotating shaft and a second rotating shaft extend out of two end faces of the cam along the rotating axis of the cam respectively, and at least a rotating part is arranged on the first rotating shaft;

a wedge block accommodating cavity is formed between the outer peripheral surface of the first rotating shaft and the inner peripheral surface of the through hole, the wedge block is accommodated in the wedge block accommodating cavity, and the wedge block is in contact with the outer peripheral surface of the first rotating shaft and the inner peripheral surface of the through hole.

2. The utility model provides a clearance continuous type gear mechanism that disappears which characterized in that: the eccentric cam component comprises a first inner toothed plate, a second inner toothed plate, an outer gear and an eccentric cam component; the outer gear is provided with a through hole; the eccentric cam assembly is positioned in the bearing sleeve, and the first inner toothed plate and the second inner toothed plate are mutually buckled to enclose an outer gear accommodating cavity; the outer gear is accommodated in the outer gear accommodating cavity;

the eccentric cam component comprises a cam and at least one wedge-shaped block, a first rotating shaft and a second rotating shaft extend out of two end faces of the cam along the rotating axis of the cam respectively, and at least a rotating part is arranged on the first rotating shaft;

a wedge block accommodating cavity is formed between the inner peripheral surface of the bearing sleeve and the outer peripheral surface of the first rotating shaft, and the wedge block is in contact with the outer peripheral surface of the first rotating shaft and the inner peripheral surface of the bearing sleeve.

3. A backlash eliminating continuous gear mechanism according to any one of claims 1 and 2, wherein: the wedge-shaped blocks are symmetrically accommodated in the wedge-shaped block accommodating cavities.

4. A backlash eliminating continuous gear mechanism according to claim 3, wherein: the spring is positioned between the two wedge-shaped blocks, and two ends of the spring are respectively contacted with opposite ends of each wedge-shaped block to keep the opposite ends of the two wedge-shaped blocks to be elastically pressed in a direction away from each other.

5. A backlash eliminating continuous gear mechanism according to claim 3, wherein: the outer peripheral surface and the inner peripheral surface of the wedge-shaped block are both arc-shaped, the inner peripheral surface of the wedge-shaped block is attached to the outer peripheral surface of the first rotating shaft, and the outer peripheral surface of the wedge-shaped block is attached to the inner peripheral surface of the through hole.

6. A backlash eliminating continuous gear mechanism according to claim 3, wherein: the outer peripheral surface and the inner peripheral surface of the wedge-shaped block are both arc-shaped, the inner peripheral surface of the wedge-shaped block is attached to the outer peripheral surface of the first rotating shaft, and the outer peripheral surface of the wedge-shaped block is attached to the inner peripheral surface of the bearing sleeve.

7. The backlash-eliminating continuous gear mechanism as claimed in claim 4, wherein: the opposite ends of the two wedge-shaped blocks are provided with notches at the side of the inner peripheral surface, the two notches enclose a spring accommodating cavity, and the spring is positioned in the spring accommodating cavity.

Technical Field

The invention belongs to the technical field of rotary adjustment continuous gear adjustment, and particularly relates to a gap-eliminating continuous gear mechanism.

Background

The clearance is rocked big in the direction of rotation between pinion rack 7 and the outer toothed plate 6 in current continuous type gear mechanism spare main problem, and its leading cause is that the eccentricity of cam is fixed unchangeable, because machining error's influence, outer toothed plate and interior pinion rack meshing back, the eccentricity is undulant at certain within range, causes like this that to have between pinion rack 7 and the interior pinion rack 6 and rocks the clearance, influences the travelling comfort.

Disclosure of Invention

The invention aims to provide a gap-eliminating continuous gear mechanism which can be widely used for the rotation adjustment of a seat joint and other rotary joint mechanisms needing stepless adjustment, and eliminates the gap between rotary motion parts.

In order to solve the technical problem, the invention aims to realize that:

a clearance-eliminating continuous gear mechanism comprises a first inner toothed plate, a second inner toothed plate, an outer gear and an eccentric cam assembly; the outer gear is provided with a through hole, the convex eccentric cam component is positioned in the through hole, and the first inner toothed plate and the second inner toothed plate are mutually buckled to enclose the outer gear accommodating cavity; the outer gear is accommodated in the outer gear accommodating cavity;

the eccentric cam component comprises a cam and at least one wedge-shaped block, a first rotating shaft and a second rotating shaft extend out of two end faces of the cam along the rotating axis of the cam respectively, and at least a rotating part is arranged on the first rotating shaft;

a wedge block accommodating cavity is formed between the outer peripheral surface of the first rotating shaft and the inner peripheral surface of the through hole, the wedge block is accommodated in the wedge block accommodating cavity, and the wedge block is in contact with the outer peripheral surface of the first rotating shaft and the inner peripheral surface of the through hole.

On the basis of the above scheme and as a preferable scheme of the scheme: a clearance-eliminating continuous gear mechanism comprises a first inner toothed plate, a second inner toothed plate, an outer gear and an eccentric cam assembly; the outer gear is provided with a through hole; the eccentric cam assembly is positioned in the bearing sleeve, and the first inner toothed plate and the second inner toothed plate are mutually buckled to enclose an outer gear accommodating cavity; the outer gear is accommodated in the outer gear accommodating cavity;

the eccentric cam component comprises a cam and at least one wedge-shaped block, a first rotating shaft and a second rotating shaft extend out of two end faces of the cam along the rotating axis of the cam respectively, and at least a rotating part is arranged on the first rotating shaft;

a wedge block accommodating cavity is formed between the inner peripheral surface of the bearing sleeve and the outer peripheral surface of the first rotating shaft, and the wedge block is in contact with the outer peripheral surface of the first rotating shaft and the inner peripheral surface of the bearing sleeve.

On the basis of the above scheme and as a preferable scheme of the scheme: the wedge-shaped blocks are symmetrically accommodated in the wedge-shaped block accommodating cavities.

On the basis of the above scheme and as a preferable scheme of the scheme: the spring is positioned between the two wedge-shaped blocks, and two ends of the spring are respectively contacted with opposite ends of each wedge-shaped block to keep the opposite ends of the two wedge-shaped blocks to be elastically pressed in a direction away from each other.

On the basis of the above scheme and as a preferable scheme of the scheme: the outer peripheral surface and the inner peripheral surface of the wedge-shaped block are both arc-shaped, the inner peripheral surface of the wedge-shaped block is attached to the outer peripheral surface of the first rotating shaft, and the outer peripheral surface of the wedge-shaped block is attached to the inner peripheral surface of the through hole.

On the basis of the above scheme and as a preferable scheme of the scheme: the outer peripheral surface and the inner peripheral surface of the wedge-shaped block are both arc-shaped, the inner peripheral surface of the wedge-shaped block is attached to the outer peripheral surface of the first rotating shaft, and the outer peripheral surface of the wedge-shaped block is attached to the inner peripheral surface of the bearing sleeve.

On the basis of the above scheme and as a preferable scheme of the scheme: the opposite ends of the two wedge-shaped blocks are provided with notches at the side of the inner peripheral surface, the two notches enclose a spring accommodating cavity, and the spring is positioned in the spring accommodating cavity.

Compared with the prior art, the invention has the outstanding and beneficial technical effects that: its characteristics are transmission shaft input adjusting torque, interior pinion rack output, because the internal design eccentric cam subassembly carries out the clearance elimination, has realized that interior pinion rack has only very little free gap of rocking, has promoted driven travelling comfort.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic diagram of an eccentric cam assembly configuration.

Detailed Description

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step, based on the given embodiments, fall within the scope of protection of the present application.

In the description of the present application, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

In the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.

A clearance-eliminating continuous gear mechanism comprises a first inner toothed plate 1, a second inner toothed plate 7, an outer gear 6 and an eccentric cam assembly; the outer gear 6 is provided with a through hole 61, the convex eccentric cam component is positioned in the through hole 61, and the first inner toothed plate 1 and the second inner toothed plate 7 are mutually buckled to enclose an outer gear accommodating cavity; the external gear 6 is accommodated in the external gear accommodating cavity; specifically, the eccentric cam assembly comprises a cam 4 and two wedge blocks 3, a first rotating shaft 42 and a second rotating shaft 43 respectively extend from two end faces of the cam 4 along the rotating axis of the cam 3, and at least a rotating part 41 is arranged on the first rotating shaft 42, so that the cam 4 can transmit driving force to rotate by matching an external tool with the rotating part 41.

Preferably, the two wedge blocks 3 are symmetrically accommodated in the wedge block accommodating cavity b.

Further, a wedge block accommodating cavity b is formed between the outer peripheral surface of the first rotating shaft 42 and the inner peripheral surface of the through hole 61, the wedge block 3 is accommodated in the wedge block accommodating cavity b, and the wedge block 3 is in contact with both the outer peripheral surface of the first rotating shaft 42 and the inner peripheral surface of the through hole 61.

Further, a spring 2 is included, the spring 2 is located between the two wedge blocks 3, and two ends of the spring 2 are respectively contacted with opposite ends of each wedge block 3, so that the opposite ends of the two wedge blocks 3 are kept to be pressed in a direction away from each other. Specifically, the outer peripheral surface and the inner peripheral surface of the wedge 3 are both arc-shaped, the inner peripheral surface of the wedge 3 is attached to the outer peripheral surface of the first rotating shaft 42, and the outer peripheral surface of the wedge 3 is attached to the inner peripheral surface of the through hole 61. Notches 31 are formed in the opposite ends of the two wedge blocks 3 on the inner peripheral surface side of the wedge blocks, a spring accommodating cavity a is enclosed by the two notches 31, the spring 2 is located in the spring accommodating cavity a, and two ends of the spring 2 are respectively contacted with the bottom surfaces of the two notches 31, so that the spring 2 is limited through the spring accommodating cavity a, and the installation stability of the spring 2 is greatly improved; in addition, the outer peripheral surfaces of the two wedge blocks 3 can be fully contacted with the through hole 61 through the elastic pressing of the spring 2, so that when the cam 4 rotates under the action of external force, the wedge block 3 on one side is pushed to rotate, the spring 3 is compressed, and the eccentric cam component rotates integrally to drive the external gear 6 and the internal toothed plate 7 to move; the wedge 3 is installed on the outer circumferential surface of the first rotating shaft 42 of the cam while the inner circumferential surface of the wedge 3 is engaged with the outer circumferential surface of the first rotating shaft 42 of the cam 4, thereby reducing the driving resistance.