TWI751864B - Bicycle lifting seat tube stroke adjusting device - Google Patents

Abstract

A device for adjusting the stroke of a bicycle lift seat tube. A collar connected to a nozzle of an outer tube for the inner tube to penetrate is connected with an adjustment ring, the adjustment ring is located between the outer tube and the inner tube, and the middle is penetrated by the inner tube. pass. A plurality of restricting pieces evenly distributed are positioned on the periphery of the outer wall of the inner pipe extending into the outer pipe. The end of the adjusting ring facing the restricting piece has a plurality of steps arranged in a stepped arrangement and with different axial heights. By rotating the collar to adjust the protruding outer wall of the adjusting ring facing the restricting piece, so as to adjust the seat tube The height of the lifting stroke can be adjusted according to the height and leg length of the rider, and the adjustment is fast, simple, tool-free, disassembly-free and easy to operate.

Description

Bicycle drop seat tube travel adjustment device

The invention relates to a bicycle lifting seat tube structure, which is especially improved for the adjustment of the lifting stroke of the seat tube, the structure of which the seat tube stroke can be adjusted according to the height and leg length of the rider, and has the advantages of quick and simple adjustment, no tools and no disassembly. And easy-to-operate bicycle drop seat tube travel adjustment device.

Press, when riding a bicycle, in order to ride comfortably, you must first adjust the height of the seat cushion according to the height of your body shape. For the lifting and adjusting mechanism of the seat tube, the inventors have invented the Chinese Invention Patent Bulletin No. CN107914796B "Bicycle Seat Cushion Lifting and Adjusting Device", the Chinese Invention Patent Bulletin No. CN107813886B "Bicycle Seat Seat Post Lifting Device, China Invention Patent Bulletin No. CN107150741B "Bicycle Seat Post Height Adjustment Mechanism", Taiwan Invention Patent Certificate No. I639528 "Bicycle Seat Post Structure", Taiwan Invention Patent Certificate No. I638740 "Bicycle Seat Post Lifting Device", Taiwan Invention Patent Certificate No. I622512 "Lifting Control Unit for Bicycle Seat Post Height Adjustment Mechanism", Taiwan Invention Patent Certificate No. I570012 "Bicycle Seat Post Height Adjustment Mechanism" and other cases.

A mechanism that can adjust the stroke of a drop seat tube is known, such as Taiwan Publication No. 202015959 "Bicycle Seatpost Stroke Adjustment Assembly" (hereinafter referred to as the known case). The above-mentioned change of the seatpost stroke of the conventional case is mainly achieved by replacing the shim to achieve the customized seatpost stroke. However, in order to replace the shim in the conventional case, the collar (component number 106) needs to be loosened and withdrawn from the outer nozzle, and then the shim should be pulled out and replaced, and then the collar should be tightened. Such an approach is not only inconvenient to operate, but also causes dust particles to fall into the outer tube when the collar is withdrawn from the outer tube mouth, resulting in unsmooth lifting and displacement of the seat tube, which affects the service life.

In view of the above-mentioned defects in the application of the prior art, the inventors of the present invention made improvements and came up with the present invention.

The main purpose of the present invention is to provide a structure that can adjust the stroke of the seat tube according to the height and leg length of the rider, and has a bicycle lift seat that can be adjusted quickly, easily and without tools, without disassembly and easy operation. Tube stroke adjustment device.

The main feature of the present invention is that a collar is located at the mouth of the outer tube for the inner tube to penetrate. The collar is connected with an adjustment ring, and the adjustment ring is located between the outer tube and the inner tube, and the middle is surrounded by the inner tube. pass through. A plurality of restricting pieces evenly distributed are positioned on the periphery of the outer wall of the inner pipe extending into the outer pipe. The adjusting ring has a plurality of stepped surfaces with different axial heights arranged in steps at the end of the adjusting ring facing the restraining piece. By rotating the collar to adjust the protruding outer wall of the adjusting ring facing the positive restraining piece, so as to adjust the lifting stroke of the seat tube high. It is easy to adjust and operate, and it is not necessary to loosen the collar to withdraw from the nozzle of the outer tube, so as to prevent dust particles from entering the outer tube, so that the service life of the seat tube and the smoothness of the adjustment displacement will not be affected.

Regarding the technical means and structures adopted by the present invention to achieve the above-mentioned purposes and effects of the invention, the following examples are given to illustrate the following.

1~5, the bicycle lift seat tube stroke adjustment device 1 of the embodiment of the present invention mainly includes an outer tube 10, an inner tube 20, a piston rod 30, a collar 40 and an adjustment ring 50. in,

The inner tube 20 (as shown in FIG. 4 ) has a first end 21 extending into the outer tube 10 , a valve seat 22 is arranged in the mouth of the first end 21 , and a plurality of evenly distributed valve seats 22 are positioned on the peripheral surface of the outer wall of the tube. The restricting piece 23, a part of the radial thickness of the restricting piece 23 protrudes from the outer wall of the inner tube 20, and has a protruding outer wall 230; the inner tube 20 located at the opposite end of the first end 21 is the second end 24, the second end 24. The end 24 is fixed with a connecting seat 25 for connecting the seat cushion of the bicycle, and the inner tube 20 is the seat tube.

The outer tube 10 (as shown in FIG. 4 ), one of the two ends is the connecting end 11 and the other is the fixed end 12 . The outer wall of the nozzle has an outer tooth surface 13 . The inner wall of the outer tube 10 corresponds to the position of the restriction piece 23, and is provided with a concave and axial restriction groove 14 opposite to that for the restriction piece 23 to be inserted, and the inner tube 20 will not be restricted when the inner tube 20 can only be displaced in the axial direction. rotate.

The piston rod 30 (as shown in FIG. 4 ) has a striker 31 , one end of the striker 31 penetrates into the outer tube 10 from the fixed end 12 of the outer tube 10 , and a control valve 32 is fixed at the end to extend to the inner tube 20 Inside. The other end of the striker 31 is positioned outside the outer tube 10 through a sealing ring 33 , and the sealing ring 33 can seal the mouth of the fixed end 12 of the outer tube 10 . Controlling the axial displacement of the striker 31 can control the synchronous axial displacement of the control valve 32 to open or close the valve hole of the valve seat 22 .

The collar 40 (as shown in FIGS. 4 and 5 ) is disposed at the connection end 11 of the outer tube 10 , and covers the mouth of the connection end 11 of the outer tube 10 . There is a through hole 41 in the middle, so that the inner tube 20 can be freely displaced axially. The inner wall of the collar 40 cooperates with the outer tooth surface 13 to have an inner tooth surface 42 so as to be able to be fixed at the position of the connection end 11 .

The adjusting ring 50 (as shown in FIGS. 4 and 5 , which is also a major improvement of the present invention) is located below the collar 40 , and is connected to the collar 40 by a fixing unit 60 , which is integrally linked with the collar 40 . The adjusting ring 50 has an action portion 51 , and the action portion 51 is located between the outer tube 10 and the inner tube 20 . The action portion 51 faces and corresponds to the end of each restricting piece 23 , and has a stepped surface group 52 (the stepped surface 52 a in the embodiment of the present invention is formed by stepped surfaces 52 a , 52 b , 52 c , and 52 d of different axial heights) arranged in a stepped shape. , 52b, 52c, 52d are arranged for example), one of the stepped surfaces 52a, 52b, 52c, 52d corresponds to the protruding outer wall 230 of the restricting piece 23. By rotating the adjusting collar 40, the stepped surfaces 52a, 52b, 52c, 52d of the adjusting ring 50 can be adjusted to align with the restricting piece 23, so as to adjust the height of the lifting stroke of the seat tube.

The fixing unit 60 (as shown in FIGS. 4 to 7 ), the fixing unit 60 is attached to the top edge of the adjusting ring 50 and has a snap ring 61 that is folded outward, and the outer peripheral surface below the snap ring 61 is provided with a plurality of outer Plane 62. The inner wall of the collar 40 is provided with a ring supporting surface 63 and a plurality of inner flat cutting surfaces 64 in accordance with the positions of the aforesaid retaining ring 61 and the outer flat cutting surface 62 . The cut surface 62 and the inner plane cut surface 64 are attached inside and outside (as shown in FIG. 7 ), so that when the collar 40 rotates, the adjusting ring 50 can rotate synchronously.

Secondly, an adjustment scale 43 can be arranged on the collar 40 (as shown in FIG. 8 ). The scale 43 is set to cooperate with the step surfaces 52a, 52b, 52c, and 52d, so that the step surface can be known from the display of the scale 43. 52a, 52b, 52c, 52d are aligned with the restricting piece 23, which is convenient for users to adjust.

After the above components are sequentially combined, the first step surfaces 52a, 52b, 52c, 52d can be adjusted to align with the restricting piece 23 by adjusting the collar 40 in conjunction with the adjusting ring 50 during use, so that the top of the protruding outer wall 230 pushes against the corresponding The stepped surfaces 52a, 52b, 52c, and 52d (as shown in (a) to (d) of FIG. 8 ) are adjusted to contact the protruding outer wall 230 according to the stepped surfaces 52a, 52b, 52c, and 52d of different axial heights. Adjust the stroke height of the inner tube 20 (ie the seat tube). Therefore, in the present invention, the adjusting ring 50 can be rotated synchronously by rotating the adjusting collar 40, so that the stroke height of the inner tube 20 (seat tube) can be adjusted without removing the collar 40 from the outer tube 10 and replacing it as in the prior art. Only by setting the length of the limiting piece 23 can the adjustment of the seat tube action stroke be completed. Therefore, in the application of the present invention, the seat tube stroke can be adjusted according to the height and leg length of the rider, and the adjustment is fast, simple, tool-free, disassembly-free and easy to operate, which is not only novel but also progressive.

To sum up, the present invention is not only novel but also progressive. It is a real pleasure to file an application for an invention patent in accordance with the law.

1: Bicycle drop seat tube travel adjustment device 10: Outer tube 11: Connection end 12: Fixed end 13: External tooth surface 14: Restriction slot 20: Inner tube 21: First End 22: Valve seat 23: Restricted Pieces 230: Protruding outer wall 24: Second End 25: Connector 30: Piston rod 31: Striker 32: Control valve 33: sealing ring 40: Collar 41: Perforation 42: Internal tooth surface 43: Scale 50: Adjustment ring 51: Action Department 52: Step face group 52a, 52b, 52c, 52d: Step surface 60: Fixed unit 61: Snap ring 62: Outer plane section 63: Support surface 64: Inner plane section

FIG. 1 is a combined perspective view of an embodiment of the present invention. FIG. 2 is a combined perspective view of an outer tube in a perspective state according to an embodiment of the present invention. FIG. 3 shows a combined cross-sectional view of an embodiment of the present invention. FIG. 4 is an exploded perspective view of an embodiment of the present invention. Figure 5 shows a partially exploded view of an embodiment of the present invention. FIG. 6 is an enlarged view of the position A of FIG. 3 . FIG. 7 is a cross-sectional top view of 7s-7s of FIG. 6 . FIG. 8 is an adjustment action diagram of the embodiments (a) to (d) of the present invention.

1: Bicycle drop seat tube travel adjustment device

10: Outer tube

11: Connection end

12: Fixed end

13: External tooth surface

14: Restriction slot

20: Inner tube

21: First End

22: Valve seat

23: Restricted Pieces

24: Second End

25: Connector

30: Piston rod

31: Striker

32: Control valve

33: sealing ring

40: Collar

41: Perforation

42: Internal tooth surface

50: Adjustment ring

51: Action Department

52: Step face group

52a, 52b, 52c, 52d: Step surfaces

60: Fixed unit

61: Snap ring

62: Outer plane section

63: Support surface

64: Inner plane section

Claims (4)

A bicycle lift seat tube stroke adjustment device comprises an outer tube, an inner tube, a piston rod and a set of rings; wherein, the inner tube has a first end protruding into the outer tube, and a first end of the first end extends into the outer tube. A valve seat is arranged in the mouth of the pipe, and a plurality of restricting sheets evenly distributed are positioned on the peripheral surface of the outer wall of the pipe. The opposite end of the first end is the second end; the outer tube has two ends, one is a connecting end and the other is a fixed end, and the connecting end is for the first end of the inner tube to extend into; the outer tube has two ends. The inner wall of the tube is corresponding to the position of the restriction piece, and is configured with a corresponding and concave and axially extending restriction groove, for the restriction piece to be embedded, and restricting the inner tube to only be axially displaced; the piston rod has a A firing pin, one end of the firing pin is inserted into the outer tube from the fixed end, and a control valve is fixed at the end to be located in the inner tube; the other end of the firing pin is passed through a sealing ring, the sealing ring can The orifice of the fixed end is sealed; when the axial displacement of the striker is controlled, the control valve can be controlled to open or close the valve hole of the valve seat; The mouth of the tube is sealed; the middle of the collar has a perforation for the inner tube to be able to move freely axially; the collar is limited to be able to rotate at the connection end position; it is characterized in that an adjustment ring is provided, One end of the adjusting ring is connected with the collar by a fixing unit and is integrally linked; the other end has an action portion located between the inner tube and the outer tube; the action portion faces and corresponds to each end of the restricting piece, It has a step-like arrangement and is composed of step surfaces with different axial heights, and one of the step surfaces corresponds to the protruding outer wall; the fixing unit has a ring on the top edge of the adjusting ring The snap ring is folded outward, and the outer peripheral surface located under the snap ring is provided with a plurality of outer planes; the inner wall of the collar is matched with the snap ring and the position of the outer plane, and is provided with a ring supporting surface and a plurality of inner planes, the snap ring can be fully clamped on the support surface, and the outer planes are inwardly and outwardly attached to the inner planes, so that when the collar rotates, the adjustment ring can rotate together; By rotating the collar to make the adjusting ring integrally rotate, the contact between the different stepped surfaces and the protruding outer wall can be adjusted to adjust the height stroke of the seat tube. The device for adjusting the stroke of a bicycle drop seat tube as claimed in claim 1, wherein a connecting seat is fixed to the second end for connecting a seat pad. The device for adjusting the stroke of a bicycle lift seat tube as claimed in claim 1, wherein the outer wall of the tube at the connecting end is provided with an outer tooth surface, and the inner wall of the collar has an inner tooth surface in cooperation with the outer tooth surface, so as to fix the collar At the connecting end position, the collar can also be rotated. The bicycle drop seat tube travel adjustment device according to claim 1 or 3, wherein the surface of the collar can be configured with a scale, and the scale is set to match the position of the stepped surface.

Images