TWI641523B - Bicycle suspension device - Google Patents

Abstract

A bicycle shock-absorbing device is mounted on a rear fork unit with respect to a tube of a main frame. The shock-absorbing device includes a positioning seat, a buffer element and an adjusting member. The positioning base extends along an axis, and is installed on the rear fork unit and opposite to the seat tube. The buffer element is connected to the positioning base and can be resilient against the seat tube, and extends along the axis, and has an intersecting with The abutting surface of the axis, the adjusting member can be sleeved along the axis to be adjusted outside the positioning seat and the buffer element, and has an end portion opposite to the seat tube, between the end portion and the abutting surface. Form a variable distance. By operating the adjusting member, the variable distance can be changed, and the purpose of adjusting the buffering elastic force of the shock absorbing device can be achieved.

Description

Bicycle suspension device

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

Generally, for the comfort and safety of a bicycle, a shock absorber is usually provided. For example, a rear shock absorber can be provided between a main frame and a rear fork unit, so that a rear wheel When vibration occurs due to bumps, the purpose of rear wheel shock absorption and buffering can be achieved through the rear suspension device.

For the existing bicycle with rear suspension and suspension (TW Certificate No. I291426), it is installed between a front tripod body and a rear tripod body pivotally connected to the front tripod body. There is a shock absorber. The shock absorber uses a pneumatic rod, which is relatively expensive.

Another existing bicycle shock absorbing device is a urethane rubber installed on a rear fork. When a rear wheel vibrates due to bumps on the road, the urethane rubber resists a tube of a main frame. Can achieve the purpose of rear wheel suspension and cushioning. However, this kind of design that uses Ulysium rubber to generate shock buffering cannot easily adjust the cushioning elasticity according to the needs of users. If you want to adjust the cushioning elasticity, you can only remove the different strengths Glue is time-consuming and labor-intensive when disassembling and replacing. Therefore, adjusting the elasticity of the buffer cannot be easily achieved.

Therefore, an object of the present invention is to provide a bicycle shock absorber with low cost and easy adjustment of cushioning elasticity.

Therefore, the bicycle shock absorber of the present invention further includes a main frame and a rear fork unit pivotally connected to the main frame. The main frame includes a tube, a head tube, and at least one seat tube connected to the seat tube. A transverse pipe between the vehicle and the head pipe of the vehicle. The shock absorbing device is mounted on the rear fork unit. The shock absorbing device includes a positioning seat, a buffer element, an adjusting member and a locking member. The positioning seat extends along an axis. And is installed on the rear fork unit and opposite to the seat tube, the positioning seat is cylindrical and has an outer peripheral surface surrounding the axis, an inner peripheral surface opposite to the outer peripheral surface, a perpendicular to the axis, and A bottom surface that is connected to one end of the outer peripheral surface, an inner surface opposite to the bottom surface and intersecting the inner peripheral surface, and a mounting hole recessed from the bottom surface toward the inside, the mounting hole is eccentrically disposed with respect to the axis, the The inner peripheral surface and the inner side surface together define a containing chamber, the buffer element is connected to the positioning seat, extends along the axis, and has an abutting surface that intersects the axis and can resiliently bear against the seat tube, and Opposite to the abutment surface and installed in the container The adjusting part is sleeved outside the positioning seat and the buffer element in an adjustable manner along the axis, and has an end portion opposite to the seat tube, and an end portion is formed between the end portion and the abutment surface. With variable distance, the locking member can lock the positioning seat to the rear fork unit, and the locking member is locked to the installation. In the hole, the positioning base may use the locking member as a rotation center to drive the buffer element and the adjusting member to eccentrically rotate relative to the seat tube.

The effect of the present invention lies in that: the adjusting member is sleeved outside the positioning base and the buffer element so as to be adjustable along the axis, and the variable distance function is formed between the end portion and the abutting surface, and the operation is performed. The adjusting member can change the variable distance, and can achieve the purpose of adjusting the buffering elasticity of the shock absorbing device. The overall structure is simple, the manufacturing assembly is easy, the cost is low, and the adjustment operation is quite easy.

100‧‧‧ Suspension

10‧‧‧ Positioning Block

L‧‧‧ axis

11‧‧‧ outer surface

12‧‧‧ Inner peripheral surface

13‧‧‧ underside

14‧‧‧ inside

141‧‧‧ bump

15‧‧‧External thread

16‧‧‧Mounting holes

17‧‧‧ scale

18‧‧‧ capacity room

20‧‧‧ buffer element

21‧‧‧ abutment

22‧‧‧ outer surface

23‧‧‧ recess

24‧‧‧ Positioning Department

30‧‧‧Adjustment

31‧‧‧ inner torus

32‧‧‧ Internal thread

33‧‧‧ tip

d‧‧‧variable distance

40‧‧‧Lock

200‧‧‧Main frame

210‧‧‧ Seatpost

220‧‧‧ head tube

230‧‧‧ horizontal tube

240‧‧‧ arrived

300‧‧‧ Rear fork unit

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 schematic perspective view of an installation of an embodiment of a bicycle shock absorber according to the present invention; A complete partial enlarged perspective combined view; FIG. 3 is an exploded perspective view of the embodiment; FIG. 4 is an incomplete cross-sectional view of the embodiment; FIG. 5 is a cross-sectional view of the shock-absorbing state of the embodiment And FIG. 6 is a schematic diagram of buffering elasticity adjustment according to the embodiment.

1 to 4, a first embodiment of a bicycle suspension device 100 according to the present invention. The bicycle further includes a main frame 200 and a rear fork unit 300 pivotally connected to the main frame 200. The main frame 200 Including a tube 210, a car head tube 220 and a connection to A transverse tube 230 between the seat tube 210 and the head tube 220. The seat tube 210 has an abutment block 240. The suspension device 100 is installed in the rear fork unit 300. The suspension device 100 includes a positioning seat 10. , A buffer element 20, an adjusting member 30, and a locking member 40 capable of locking the positioning base 10 to the rear fork unit 300.

The positioning base 10 is mounted on the rear fork unit 300 through the locking member 40 and is opposite to the abutment block 240 of the seat tube 210. The positioning base 10 is cylindrical and extends along an axis L, and has an outer peripheral surface 11 surrounding the axis L, an inner peripheral surface 12 opposite to the outer peripheral surface 11, a perpendicular to the axis L and connected to the axis L. A bottom surface 13 at one end of the outer peripheral surface 11, an inner side surface 14 opposite to the bottom surface 13 and intersecting the inner peripheral surface 12, a male screw portion 15 provided on the outer peripheral surface 11, and a bottom recessed from the bottom surface 13 toward the inside The mounting hole 16 and a scale 17 provided on the outer peripheral surface 11, the inner peripheral surface 12 and the inner side surface 14 together define a receiving chamber 18, and the inner side surface 14 has a positioning along the axis L and faces the receiving chamber. 16 is a convex block 141 protruding from the bottom surface 13 to the convex block 141, and the mounting hole 16 is eccentrically disposed with respect to the axis L in this embodiment.

The cushioning element 20 is hollow and cylindrical, and is made of urethane. The cushioning element 20 is connected to the positioning seat 10 and can resist the abutment block 240 of the seat tube 210. The cushioning element 20 extends along the axis L and has a vertical intersection with the axis. An abutment surface 21 of L, an outer surface 22 surrounding the axis L and extending from the periphery of the abutment surface 21, a positioning portion 24 opposite to the abutment surface 21 and installed in the receiving chamber 18, and A concave hole 23 is recessed in the positioning portion 24 and the convex block 141 is nested.

The adjusting member 30 is sleeved outside the positioning base 10 and the buffer element 20 so as to be adjustable along the axis L. The adjusting member 30 has a hollow cylindrical shape, and has an outer periphery surrounding the axis L and the outer peripheral surface 11. An inner ring surface 31, an inner thread portion 32 provided on the inner ring surface 31 and screwable to the outer thread portion 15, and an abutment block 240 intersecting at one end of the inner ring surface 31 and opposite to the seat tube 210 The end portion 33 forms a variable distance d between the end portion 33 and the abutment surface 21.

The locking member 40 is rotatably passed through the rear fork unit 300 and screwed into the mounting hole 16, and the positioning base 10 can be locked to the rear fork unit 300.

As shown in FIG. 1, FIG. 2, and FIG. 4, when the shock absorbing device 100 of the present invention is mounted on the rear fork unit 300 relative to the seat tube 210, in a normal state (for example, when riding on a flat road) ), A gap 50 is formed between the outer surface 22 of the cushioning element 20 and the inner ring surface 31 of the adjusting member 30 to allow the cushioning element 20 to elastically deform in the radial direction, and the abutment surface 21 and the end portion 33 There is this variable distance d.

As shown in FIG. 5, when vibration is generated due to bumps on the road surface, the rear fork unit 300 is caused to rotate relative to the main frame 200, and the buffer element 20 of the shock absorbing device 100 is directed toward the seat tube 210. When the block 240 strikes, the gap 50 existing between the outer surface 22 of the cushioning element 20 and the inner annular surface 31 of the adjusting member 30 is used, and the cushioning element 20 has a hollow cylindrical shape, so that the cushioning element 20 can move along the Elastic change in radial direction Shape, and make the variable distance d between the abutment surface 21 and the end portion 33 smaller, or even disappear), and the material characteristics of the cushioning element 20 can be used for cushioning and shock absorption purposes.

As shown in FIG. 6 again, when the user changes the topography greatly or changes different users, the operator only needs to rotate the adjusting member 30 and use the internal thread portion 32 to be screwed to the external thread portion 15 of the positioning base 10, that is, A variable distance d between the abutting surface 21 and the end portion 33 can be adjusted. The larger the variable distance d, the larger the deformation amount of the cushioning element 20 and the larger the vibration force can be absorbed. Therefore, the present invention can easily adjust the cushioning elasticity according to the needs of the user, and the setting of the scale 17 (see FIG. 3) allows the user to easily see the adjustment amount.

It is worth mentioning that by using the mounting hole 16 of the positioning base 10 to be eccentrically disposed with respect to the axis L, when the positioning base 10 is rotated, the positioning base 10 can be rotated by the locking member 40 as the rotation center. And the eccentric rotation of the cushioning element 20 and the adjusting member 30 relative to the seat tube 210 can adjust the stop surface 21 to accurately align with the abutment block 240 to prevent each component from being manufactured and assembled. Mismatch, which cannot produce better buffering effect.

In summary, the overall structure of the present invention is simple, and the operation of adjusting the elasticity of the buffer is relatively easy. There is no need to change and replace the Youli glue with different soft hardness, so the operation of adjustment is quite fast.

In summary, the bicycle shock absorber of the present invention has a simple overall structure, is easy to manufacture, and can produce the effect of adjusting the buffer elasticity, which can indeed achieve the purpose of the present 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.

Claims (5)

A bicycle suspension device includes a main frame and a rear fork unit pivotally connected to the main frame. The main frame includes a tube, a head tube, and at least one connected to the seat tube and the bicycle. A transverse pipe between the head pipes, the shock absorbing device is mounted on the rear fork unit, the shock absorbing device comprises: a positioning seat, extending along an axis, and mounted on the rear fork unit and relative to the seat pipe, the positioning The seat is cylindrical and has an outer peripheral surface surrounding the axis, an inner peripheral surface opposite to the outer peripheral surface, a bottom surface perpendicular to the axis and connected to one end of the outer peripheral surface, and opposite to the bottom surface and intersecting A mounting hole recessed from the bottom surface toward the inside on the inner side surface of the inner peripheral surface, the mounting hole is eccentrically disposed with respect to the axis, and the inner peripheral surface and the inner side surface jointly define a containing chamber; a cushioning element; Is connected to the positioning seat and extends along the axis, and has an abutting surface that intersects the axis and can resiliently abut against the seat tube, and a positioning opposite to the abutting surface and installed in the receiving chamber Part; an adjusting part, which can be set to adjust along this axis The positioning seat is external to the cushioning element and has an end portion opposite to the seat tube, and a variable distance is formed between the end portion and the abutment surface; and a locking member can be used to lock the positioning seat to the For the rear fork unit, the locking member is locked in the mounting hole, and the positioning seat can use the locking member as a rotation center to drive the buffer element and the adjusting member to rotate eccentrically relative to the seat tube. The bicycle shock absorbing device according to claim 1, wherein the positioning base further has an external thread portion provided on the outer peripheral surface, the adjusting member has a hollow cylindrical shape, and has a periphery surrounding the axis and opposite to the outer periphery. An inner ring surface of the surface and an inner thread portion provided on the inner ring surface and screwable to the outer thread portion. The bicycle shock absorber according to claim 1, wherein the cushioning element is hollow cylindrical and made of urethane, and further has an outer surface surrounding the axis, and an outer surface is formed between the outer surface and the inner annular surface. The buffer element is allowed to produce a gap that is elastically deformed in the radial direction. The bicycle suspension device according to claim 2, wherein the positioning base further has a scale provided on the outer peripheral surface. The bicycle shock absorber according to claim 1, wherein the inner side of the positioning base has a protrusion disposed along the axis and protruding toward the receiving chamber, and the buffer element further has an opposite side to the abutting surface and A recessed hole for the bump to nest.