TW201821323A - Adjustable angle's bicycle shock absorber device - Google Patents

Abstract

The utility model provides an adjustable angle's bicycle shock absorber device, contain a buffer unit and a pivot joint, this buffer unit has a first end and a second end, this second end has a terminal surface, one by this terminal surface towards the concave depressed part of establishing of this first end, one sets up in this depressed part and along pin joint portion that a central line extends and one around this central line and set up in the indent cambered surface of this depressed part inner end, this pivot joint has one and is the circular -arc pivot face of evagination, this pivot face can rotate and laminate in this indent cambered surface. When a connecting rod parts produces the pivot for a lower fork part, utilize this pivot face can rotate and laminate in the effect of this indent cambered surface, enable the shaking force and stretch the direction corresponding to an axis edge of this buffer unit, and can produce the buffering effect of preferred.

Description

Angle-adjustable bicycle shock absorbing device

The invention relates to a bicycle accessory, in particular to a bicycle shock-absorbing device with adjustable angle.

Generally, a bicycle with a front suspension function is provided with at least one front suspension device on an inverted Y-shaped front fork, so that when a front wheel vibrates due to bumps on the road surface, the front suspension device can be used. To achieve the purpose of front wheel suspension and cushioning (for example, Taiwan Certificate No. M526977, 525317, 522173 and other patent cases).

In addition, as shown in FIG. 1, a conventional bicycle with a front suspension function includes a main frame 1, a front fork unit 2 pivotally connected to the main frame 1, and a bicycle unit mounted on the front fork unit 2. Front suspension device 3, the main frame 1 includes a head tube 101, the front fork unit 2 includes an upper tube 201 with a shaft disposed on the head tube 101, and a lower fork 202 connected to the bottom of the upper tube 201 And an inverted L-shaped link member 203 pivotally connected in front of the lower fork member 202, and the link member 203 is installed with a front wheel 4. In addition, the front suspension device 3 is connected between the lower fork member 202 and the top of the link member 203, and a spring 301 is mainly used to generate a buffer effect.

When the front front wheel 4 vibrates due to bumps on the road surface, the link member 203 is pivoted relative to the lower fork member 202, and the top end of the link member 203 is relative to the top of the lower fork member 202. Approaching occurs, at this time, the cushioning effect can be achieved by using the elastic force of the spring 301.

When the vibration force is eliminated, the elastic force of the spring 301 can be used to cause the link member 203 to pivot in the opposite direction relative to the lower fork member 202.

Although this front suspension device 3 can produce a shock absorbing and buffering function, since at the moment of vibration, the top end of the link member 203 is a swing that generates a circular arc track relative to the lower fork member 202, making the The spring 301 will be driven into an arched shape. Therefore, the vibration force cannot be accurately transmitted and corresponds to the axial direction of the spring 301, and the shock absorbing effect generated will be affected.

Therefore, the object of the present invention is to provide a bicycle shock-absorbing device with adjustable angles which can produce a better shock-absorbing cushioning effect.

Therefore, the angle-adjustable bicycle shock absorber of the present invention further includes a main frame and a front fork unit pivotally connected to the main frame. The main frame includes a head pipe and the front fork unit includes a shaft. An upper pipe provided on the head pipe, a lower fork member connected to the upper pipe, and a link member pivotally connected to the lower fork member. The link member is located on the side of the lower fork member in a forward direction. The front suspension device is installed between the fork member and the link member. The front suspension device includes a buffer unit and a pivot joint. The buffer unit extends along an axis and has a first end and A second end opposite to the first end along the axis, the first end being connected to the joint between the upper tube and the lower fork, the second end having an end surface, a recessed portion recessed from the end surface, A pivot joint provided in the recessed portion and extending along a center line perpendicular to the axis, and an inwardly curved surface surrounding the center line and formed at the inner end of the recessed portion, the pivot joint is connected to the The top of the link member has a pivot portion provided along the centerline and rotatably pivoted by the pivot portion and a pivot portion A pivoting surface that is convex and arc-shaped around the center line, the pivoting surface rotatably fits on the concave arc surface, and the link member drives the pivot joint to pivot relative to the buffer unit. Direction, restricting pivoting in a rear direction opposite to the front direction or in the front direction, when the link member drives the pivot joint to pivot relative to the buffer unit in the rear direction, the fork member and The distance between the top end of the link member becomes smaller, and when the link member drives the pivot joint to pivot forward with respect to the buffer unit, the distance between the lower fork member and the top end of the link member becomes larger .

The effect of the present invention is that the pivot surface of the pivot joint is rotatably fitted to the concave arc surface of the buffer unit. When the vibration is generated, the pivot joint can be pivoted relative to the buffer unit. In addition, the vibration force transmitted to the pivot joint can correspond to the axial extension direction of the buffer unit, and a better shock-absorbing effect can be achieved.

Referring to FIGS. 2 to 4, an embodiment of an adjustable-angle bicycle shock absorber according to the present invention. The bicycle further includes a main frame 100 and a front fork unit 200 pivotally connected to the main frame 100. The main frame 100 includes a head pipe 110, and the front fork unit 200 includes an upper pipe 210 having a shaft disposed on the head pipe 110, a lower fork member 220 connected to the upper pipe 210, and a pivot member connected to the lower fork member 220. The link member 230 is mounted on a front wheel 300. The link member 230 is located at one side of the lower fork member 220 along a front direction F (that is, the normal traveling direction of the bicycle). The front suspension device is installed between the lower fork member 220 and the link member 230. The shock absorbing device includes a buffer unit 10 and a pivot joint 20.

With reference to FIG. 5 and FIG. 6, the buffer unit 10 extends along an axis L, and has a first sleeve 11, a second sleeve 12 passing through one side of the first sleeve 11 along the axis L, and an edge The axis L is disposed and mounted on the elastic member 13 between the first kit 11 and the second kit 12. The first kit 11 has a hollow tube shape and has a first end 111. The first end 111 is connected to a joint between the upper tube 210 and the lower fork 220.

The second kit 12 has a hollow tube shape, and the second kit 12 and the first kit 11 are slidable along the axis L and are arranged inside and out. (The second kit 12 of this embodiment is mounted on the first kit along the axis L. Outside of the sleeve 11), and has a second end 121 opposite to the first end 111, the second end 121 has an end surface 122 perpendicular to the axis L, and a recess from the end surface 122 toward the first end 111 A recessed portion 123 having a class hole shape, a pivotal portion 124 disposed in the recessed portion 123 and extending along a center line L1 perpendicular to the axis L, and a pivot portion 124 surrounding the center line L1 and formed in the recess The concave arc surface 125 at the inner end of the portion 123. The pivoting portion 124 in this embodiment is hole-shaped.

With reference to FIGS. 5 and 6, the pivot joint 20 is connected to the top of the link member 230 and has a pivot portion 21 and a pivot portion 21 provided along the center line L1 and rotatably pivoted by the pivot portion 124 and A pivoting surface 22 having a convex arc shape surrounding the center line L1 is rotatably attached to the concave arc surface 125. In addition, the connecting rod 230 drives the pivot joint 20 to pivot with respect to the buffer unit 10, and restricts pivoting in a rear direction R opposite to the front direction F or toward the front direction F. The pivoting portion 21 of this embodiment is in the shape of a shaft.

When the front wheel 300 vibrates due to bumps on the road surface, the link member 230 is swiveled relative to the lower fork member 220, and the top end of the link member 230 is generated relative to the top end of the lower fork member 220. Approaching, at this time, the pivot joint 20 pivots relative to the buffer unit 10 in the rear direction R, the distance between the lower fork member 220 and the top end of the link member 230 becomes smaller, and the buffer unit 10 Due to the component force generated by the rotation of the link member 230, a pressing force corresponding to the axis L is generated on the buffer unit 10, so that the second kit 12 slides along the axis L relative to the first sleeve 11. The spring 13 is compressed and contains a releasable elastic force, and a buffering effect can be achieved (see FIG. 7).

When the vibration force is eliminated, the link member 230 will drive the pivot joint 20 to swing toward the front direction F with respect to the buffer unit 10. The distance between the lower fork member 220 and the top of the link member 230 As the distance becomes larger, the state shown in FIGS. 5 and 6 can be restored.

Therefore, by using the adjustable angle bicycle suspension device of the present invention, the following effects can be produced:

1. Compared with the front suspension device of the existing bicycle in the present invention, under the condition that the top end of the link member 230 and the top end of the lower fork member 220 are the same distance, the present invention is based on the pivot surface of the pivot joint 20 The role of 22 and the concave arc surface 125 inside the end surface 122 of the second end 121 can make the variable stroke of the buffer unit 10 larger, and the shock absorption effect produced is better.

2. The use of the pivoting surface 22 and the concave arc surface 125 of the pivoting joint 20 to hide inside the end surface 122 of the second end 121 is not only beautiful, but also less likely for water and dust to penetrate into it. Between the pivoting surface 22 and the concave arc surface 125, it is possible to ensure a smooth pivoting of the pivoting joint 20 and the buffer unit 10, and to ensure that the buffer unit 10 can operate normally.

To sum up, the adjustable angle bicycle shock absorber of the present invention, by using the cooperation of the buffer unit 10 and the pivot joint 20, can not only produce the effect of shock absorption, but also produce a better shock absorption effect. , Can indeed achieve the purpose of cost invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited in this way, any simple equivalent changes and modifications made in accordance with the scope of the patent application and the content of the patent specification of the present invention are still Within the scope of the invention patent.

100‧‧‧Main frame

110‧‧‧car head tube

200‧‧‧ Fork Unit

210‧‧‧ Upper tube

220‧‧‧ Lower fork

230‧‧‧ connecting rod

300‧‧‧ front wheel

10‧‧‧ buffer unit

L‧‧‧ axis

11‧‧‧First Kit

111‧‧‧ the first end

12‧‧‧Second Kit

121‧‧‧ the second end

122‧‧‧face

123‧‧‧ Depression

124‧‧‧ Pivot

125‧‧‧ concave concave surface

13‧‧‧Elastic piece

L1‧‧‧ Centerline

20‧‧‧ Pivot joint

21‧‧‧Pivot

22‧‧‧ Pivoting surface

F‧‧‧ forward direction

R‧‧‧ rear direction

Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is a plan view of a conventional bicycle with a front suspension function; FIG. 2 is an adjustable angle of the present invention A three-dimensional installation schematic diagram of an embodiment of a bicycle suspension device; FIG. 3 is a partially enlarged perspective view of the embodiment; FIG. 4 is an exploded perspective view of the embodiment; and FIG. 5 is a partial sectional side view of the embodiment FIG. 6 is a partially enlarged schematic diagram of FIG. 5; and FIG. 7 is a schematic diagram of an operation in a shock-absorbing state according to this embodiment.

Claims (2)

An angle-adjustable bicycle shock absorbing device. The bicycle further includes a main frame and a front fork unit pivotally connected to the main frame. The main frame includes a head pipe, and the front fork unit includes a shaft disposed on the shaft. The upper pipe of the head pipe, a lower fork member connected to the upper pipe, and a link member pivotally connected to the lower fork member. The link member is located on the side of the lower fork member in a forward direction, and the front avoidance A shock device is installed between the lower fork member and the link member. The front shock absorbing device includes: a buffer unit extending along an axis and having a first end and a first end opposite the first end along the axis The second end is connected to the joint between the upper tube and the lower fork. The second end has an end surface, a recessed portion recessed from the end surface toward the first end, and a recess provided in the recess. And a pivot joint extending along a center line perpendicular to the axis and an inwardly curved surface surrounding the center line and formed at the inner end of the recess; and a pivot joint connected to the link member A top part, and a pivot part provided along the center line and rotatably pivoted by the pivot part and a center part around the center line An outwardly convex arc-shaped pivoting surface is rotatably fitted to the inwardly curved surface, and the link member drives the pivoting joint to pivot with respect to the buffer unit, restricting the direction to the opposite When the pivot is generated in the rear direction of the front direction or toward the front direction, when the link member drives the pivot joint to pivot relative to the buffer unit in the rear direction, the lower fork member and the top end of the link member The distance between them becomes smaller, and when the link member drives the pivot joint to pivot forward with respect to the buffer unit, the distance between the lower fork member and the top of the link member becomes larger. The adjustable angle bicycle shock absorber according to claim 1, wherein the buffer unit further includes a first kit, a second kit passing along the axis on the side of the first sleeve, and a along the An elastic member disposed between the first kit and the second kit along an axis, the first kit and the second kit are slidable along the axis and arranged inside and out, and the first end is arranged on the first kit , The second end is disposed in the second kit.