Hub with misaligned-angle star ratchet structure

Abstract

A hub with a staggered angle planar tooth structure includes: a hub body, a base, a spindle, and a staggered angle planar tooth structure disposed between the hub body and the base. The structure includes: a first planar tooth having a first tooth portion on one side facing the base, and the first tooth portion having a plurality of consecutively connected first teeth; and a second planar tooth having a second tooth portion on one side facing the base, and the second tooth portion having a plurality of consecutively connected second teeth; wherein the number of the second teeth is the same as the number of the first teeth, causing adjacent... The tooth angle between the two first teeth is equal to the tooth angle between the two adjacent second teeth; and a third planar tooth, relative to the first planar tooth and the second planar tooth, has a third tooth portion disposed in the direction facing the drum body, and the third tooth portion is provided with a plurality of continuously connected third teeth; wherein the number of such third teeth is the same as the number of the first teeth and the second teeth; wherein the first teeth of the first tooth portion and the second teeth of the second tooth portion are staggered, such that the maximum forward rotation angle of the third planar tooth from the non-meshing position to re-meshing is less than the degree of the tooth angle.

Claims

1. A hub with a staggered angle planar tooth structure, comprising: a hub body; a base disposed on one side of the hub body; a spindle passing through the axial interior of the hub body and the base; and a staggered angle planar tooth structure disposed between the hub body and the base, comprising: a first planar tooth disposed at one end of the hub and rotating synchronously with the hub, having a first tooth portion disposed on one side facing the base, and the first tooth portion having a plurality of continuously connected first teeth; A second planar tooth, located radially inside the first planar tooth and rotating synchronously with it, has a second tooth portion on one side facing the base, and the second tooth portion has a plurality of continuously connected second teeth; wherein the number of the second teeth is the same as the number of the first teeth, such that the tooth angle between two adjacent first teeth is equal to the tooth angle between two adjacent second teeth; and a third planar tooth, located on one side of the base and relative to the first and second planar teeth, has a third tooth portion on one side facing the hub body, for being driven to engage with one of the first and second tooth portions, and the third tooth portion has a plurality of continuously connected third teeth; wherein the number of the third teeth is the same as the number of the first and second teeth; wherein... The first teeth of the first tooth portion and the second teeth of the second tooth portion are staggered, causing the maximum forward rotation angle of the third planar tooth from the non-meshing position to re-meshing to be less than the degree of the tooth angle.

2. A hub with a staggered planar tooth structure as described in claim 1, wherein the number of the first tooth and the second tooth is N, resulting in a tooth angle of 360 / N; and the adjacent and staggered first tooth and the second tooth have a displacement angle, which is half of the tooth angle; thereby, the maximum forward rotation angle of the third planar tooth re-engaging with one of the first planar tooth or the second planar tooth from a non-engaging position is half of the tooth angle.

3. The hub with a staggered angle planar tooth structure as described in claim 1, wherein the inner side of one end of the hub body adjacent to the base has a hub fitting groove, which is formed by a plurality of convex ribs and a plurality of grooves arranged alternately; the first planar tooth has a first fitting portion, which includes a plurality of convex ribs and a plurality of grooves arranged alternately and arranged around the radial outer side of the first planar tooth and corresponding to the hub fitting groove of the hub body, so that when the first planar tooth is provided in the axial interior of the hub body, the first fitting portion fits into the hub fitting groove.

4. The hub with a staggered angle planar tooth structure as described in claim 1, wherein the first planar tooth has a first fitting groove comprising a plurality of ribs and a plurality of grooves arranged alternately around the radial inner side of the first planar tooth; the second planar tooth includes a second fitting portion comprising a plurality of ribs and a plurality of grooves arranged alternately around the radial outer side of the second planar tooth and corresponding to the first fitting groove of the first planar tooth; so that when the second planar tooth is disposed inside the first planar tooth, the second fitting portion fits into the first fitting groove.

5. The hub with a staggered angle planar tooth structure as described in claim 1, wherein the inner side of one end of the hub body adjacent to the hub base has a hub base fitting groove, which is formed by a plurality of protruding ribs and a plurality of grooves arranged alternately; the third planar tooth has a third fitting portion, which includes a plurality of protruding ribs and a plurality of grooves arranged alternately and surrounding the radial outer side of the third planar tooth, and corresponds to the hub base fitting groove of the hub base, so that when the third planar tooth is provided on the inner side of the hub base, the third fitting portion fits into the hub base fitting groove.

6. The hub with the misaligned planar tooth structure as described in claim 1 further includes a first elastic member with its two ends abutting against the hub body and the second planar tooth, respectively, to provide a first elastic force acting on the second planar tooth, causing the second planar tooth to tend to move in a direction closer to the third planar tooth.

7. A hub with a staggered angle planar tooth structure as described in claim 6, wherein the inner side of the hub body has a first stop portion extending inward in an annular shape; the inner side of the second planar tooth has a first push portion extending inward in an annular shape; one end of the first elastic member abuts against the first stop portion of the hub body, and the other end abuts against the first push portion of the second planar tooth.

8. The hub with the misaligned angle planar tooth structure as described in claim 6 further includes a second elastic member with its two ends abutting against the hub base and the third planar tooth, respectively, to provide a second elastic force acting on the third planar tooth, causing the third planar tooth to tend to move in a direction closer to the first planar tooth and the second planar tooth.

9. The hub with a staggered angle planar tooth structure as described in claim 8, wherein the inner side of the hub base has a sleeve fitted onto the spindle, and one end of the sleeve has a second stop portion on its outer edge; the inner side of the third planar tooth has a second push portion extending inward in an annular shape; one end of the second elastic member abuts against the second stop portion of the sleeve, and the other end abuts against the second push portion of the third planar tooth.

10. A hub with a misaligned planar tooth structure as described in claim 8, wherein the second elastic force of the second elastic member is greater than the first elastic force of the first elastic member.

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