Adjustment device for shock absorbers

Abstract

This invention proposes an adjustment device that can be mounted on a shock absorber. The shock absorber has a column and a spring sleeved on the column. The adjustment device of this invention includes a sliding sleeve and a drive rod. The sliding sleeve is mounted on the column and moves along the axial direction of the column. The sliding sleeve has an annular wall portion, an internal thread, and an external tooth portion. The annular wall portion surrounds the outer circumferential surface of the column and has an inner annular wall surface and an outer annular wall surface. The internal thread is formed on the inner annular wall surface and screws into the external thread of the column. The external tooth portion is formed on the outer annular wall surface and extends along the circumferential direction of the annular wall portion. The drive rod is rotatably coupled to the external tooth portion of the sliding sleeve, thereby driving the sliding sleeve. The sliding sleeve is driven by the rotation of the drive rod, and the coupled position can be maintained at the same point during use, thus facilitating use.

Claims

1. An adjustment device disposed on a shock absorber having a column and a spring sleeved on the column; the adjustment device comprising: a sliding sleeve disposed on the column, the sliding sleeve being movable along the axial direction of the column, the sliding sleeve having: an annular wall portion surrounding the outer circumferential surface of the column, the annular wall portion having an inner annular wall surface and an outer annular wall surface opposite to each other; an internal thread formed on the inner annular wall surface and an external thread screwed onto the outer circumferential surface of the column; and an external tooth portion formed on the outer annular wall surface and extending along the circumferential direction of the annular wall portion; and a drive rod rotatably coupled to the external tooth portion of the sliding sleeve, thereby driving the sliding sleeve to rotate relative to the column.

2. The adjusting device as described in claim 1, wherein: The outer tooth portion of the sliding sleeve includes a plurality of grooves arranged along the circumferential direction of the annular wall portion, and the bottom surface of each groove is an arc-shaped surface; and the drive rod has a worm gear portion that is engaged with the outer tooth portion of the sliding sleeve and can be detachably contacted with the bottom surface of each groove.

3. The adjustment device as described in claim 1 or 2, further comprising: a coupling seat connecting the sliding sleeve and the drive rod, the coupling seat having: a body; a sleeve groove recessed in the body, the sliding sleeve being rotatably disposed in the sleeve groove; a rod groove recessed in the body and having an opening formed on the surface of the body, the drive rod being rotatably disposed in the rod groove; and a communication port formed inside the body, the communication port communicating the sleeve groove and the rod groove, and the coupling point of the drive rod and the external tooth portion being located at the communication port.

4. The adjustment device as described in claim 3, wherein, The coupling seat further comprises: a stop portion connected to the seat body and located at one edge of the sleeve groove, the coupling seat facing the spring with the stop portion, and the sliding sleeve abutting against the stop portion.

5. The adjusting device as described in claim 4, further comprising: a flange disposed on the abutment portion of the coupling seat, and the flange abutting against one end of the spring.

6. The adjustment device as described in claim 3, wherein, The coupling seat further comprises: a retaining plug, which is detachably engaged between the drive rod and the rod groove, and located at the opening of the rod groove.

7. The adjusting device as claimed in claim 6, further comprising: a locking device detachably fixed to the column, the locking device and the spring being located on opposite sides of the coupling seat; and a stop rod having one end fixed to the coupling seat and the other end connected to the locking device.

8. The adjustment device as described in claim 7, wherein, The abutment bar further has: a plurality of markings located on the surface of the abutment bar and evenly spaced along the length of the abutment bar.

9. The adjusting device as described in claim 3, wherein, One outer end of the drive rod extends outside the opening of the rod slot, and the outer end is a polygonal cylindrical rod head or an internal hexagonal round rod head.

10. The adjustment device as described in claim 1 or 2, further comprising: a motor poweredly connected to the drive rod; and a controller electrically connected to the motor.

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