CN2612592Y

CN2612592Y - Crank structure for telescopic springing of vehicle frame

Info

Publication number: CN2612592Y
Application number: CN 03245475
Authority: CN
Inventors: 许咏丰
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-04-17
Filing date: 2003-04-17
Publication date: 2004-04-21
Anticipated expiration: 2013-04-17

Abstract

Disclosed is a frame damper winch structure, the ends are separately pin jointed with the frame and the top pipe of the back fork mounting, a hole seat is provided in the center, a cut groove is cut provided in the wall of the hole seat, the sides of the relative end in the cut groove are separately provided with a canulate faucet base and a halving unit which is pass through the damper winch and the cut groove and is halving located with the faucet base, a trimmable rotate base is provided in the hole seat, an eccentric orifice is provided on the base, a canulate perforative pin connected base which is provided in one end of the damper is corresponding with the eccentric hole by a venire regulated unit for connecting and fixing, the other end of the damper is pin connected with the frame, therefore, the damper can be synchronously drove for changing angles by the venire regulated unit rotating, the damper cushion quakeproof effect can be adjusted by the visual control of every users in the property, weight and the road condition, the structure is rational and the assembling is easy, also the operation is convenient, the utility model has value in use and popularization.

Description

Crank structure of shock absorber for bicycle frame

< one > belongs to the technical field

The present invention relates to a crank structure for a shock absorber of a bicycle frame, and more particularly to a crank structure for a shock absorber of a bicycle frame with adjustable shock absorbing angle and length, which can be used to mount a bicycle frame with different shock absorbers in the specification of the actuating stroke, and can adjust the shock absorbing effect of the shock absorber by the visual control performance, weight and road conditions of each player (user).

< II > background Art

The crank of traditional shock absorber for bicycle frame has the structure that it is connected with one end of shock absorber of rear fork on rear fork frame, and the other end of shock absorber of rear fork is connected with a connecting plate fixed on bicycle frame, so that it can provide buffer shock-absorbing function between bicycle frame and rear fork frame. However, this structure has the following apparent disadvantages in use:

1. after the frame is installed, the length of the position of the rear fork shock absorber is fixed, so that rear fork shock absorbers with different length specifications cannot be replaced, and the frame can only be installed just like the existing rear fork shock absorbers with the same specification length.

2. The action included angle of the rear fork shock absorber is also fixed, so the buffering shock absorption strength of the rear fork shock absorber cannot be adjusted, and the buffering shock absorption strength of the shock absorber cannot be adjusted according to the control performance, the weight and the road condition of each player (user), so that the use and the control of the structural design are not comfortable and are not convenient.

The main objective of the present invention is to provide a bicycle frame shock-absorbing crank structure with adjustable shock-absorbing angle and length, which can be used to install various shock absorbers with different operation strokes, and the cushioning effect of the shock absorber can be adjusted by the visual control performance, weight and road conditions of each player (user).

< III > summary of the invention

The utility model relates to a crank structure of a shock absorber for a bicycle frame, wherein two ends of the crank structure are respectively pivoted with a bicycle frame and an upper pipe of a rear fork frame, a hole seat is arranged in the middle of the crank structure, a cutting groove is arranged on the wall body of the hole seat, two sides of the opposite end of the cutting groove are respectively provided with a bearing seat which is hollow inside and a locking piece which can be inserted into the crank of the shock absorber from the outside and locked and positioned with the bearing seat after cutting the groove, a seat body which can be finely adjusted and rotated is arranged in the hole seat, and an eccentric hole is arranged on the seat body; one end of the shock absorber is provided with a hollow through hole-shaped pivot base corresponding to the eccentric hole of the base body, and a fine adjustment element is inserted, connected and fixed, and the other end of the shock absorber is pivoted with the frame; thus, the rotation of the fine adjustment element can synchronously drive the shock absorber to change the angle.

The shock absorber is pivoted with a connecting seat at the end of the shock absorber corresponding to the frame in a pivoting manner, vertical support frames are fixedly connected to two sides of the frame corresponding to the connecting seat, a row of holes corresponding to transverse arrangement are formed between the two support frames, so that a lock bolt penetrates through the two support frames and the connecting seat to be pivoted and positioned, and the shock absorbers with different specifications are installed and used by changing the locking position.

The two ends of the shock absorber crank are connected with the frame and the rear fork frame through connecting fittings, each group of connecting fittings can comprise a fixing piece, a hollow fixing seat, a bearing, a gasket and a dustproof gasket, the bottom end of the shock absorber crank is provided with a bearing hole for the bearing to be arranged, the hollow fixing seat is arranged in the bearing, and the fixing piece is sequentially penetrated into the hollow fixing seat, the bearing, the gasket and the dustproof gasket from the outer side of the shock absorber crank to be combined.

Wherein the cutting groove can be disposed on the wall between the bearing hole and the hole seat for the upper tube of the crank pivot fork.

Wherein, the hollow inner wall of the hole seat and the outer wall of the seat body can be straight tooth-shaped wall surfaces.

Wherein, the frame is provided with a plurality of holes at the pivot joint of the crank end, so as to adjust the position of the crank end.

The utility model relates to a frame shock absorber crank structure, its advantage: the included angle and length of the shock absorber can be adjusted, the angle between the crank of the shock absorber and the frame can be adjusted, and the included angle of the shock absorber is convenient to adjust. The structure is scientific, the assembly is easy, the operation and the use are convenient, and the popularization and application value is realized.

< IV > description of the drawings

FIG. 1 is a partial assembled view of a frame according to an embodiment of the present invention.

FIG. 2 is an exploded view of the rear fork, the shock absorber crank and the frame of the present invention.

FIG. 3 is a top view of the assembly of FIG. 2.

FIG. 4 is an exploded view of the rear shock absorber according to the embodiment of the present invention.

FIG. 5 is a partial external view of a frame according to an embodiment of the present invention.

FIG. 6 is an external view of the shock absorber according to the embodiment of the present invention, in which the fine adjustment element is rotated to adjust the angle of the shock absorber.

FIG. 7 is an external view of the connection between the crank of the shock absorber and different holes on the frame according to the embodiment of the present invention.

FIG. 8 is an external view of the connection between the position of the row holes of the frame and the rear shock absorbers of different types according to the embodiment of the present invention.

The numbers in the figures are as follows:

1 shock absorber crank 2 frame 3 rear fork frame

4. 5 connecting fittings 6

shock absorbers

10, 11 bearing holes

40. 50

fixing piece

41, 51

fixing seat

42, 52 bearing

43. 53

spacer

44, 54 dustproof spacer 12 hole seat

13 cutting ditch 14 bearing seat 15 locking piece

Rib body of eccentric hole 161 of 16 seat body 160

120 internal junction 17 fine tuning element 60 pivot mount

61 connecting seat 22 support frame 220 row holes

20 bearing surface 21 hole 221 bolt

< fifth > detailed description

Referring to FIG. 1, a structure of a frame shock absorber crank 1 installed between a frame 2 and a rear fork 3 according to an embodiment of the present invention; wherein,

the shock absorber crank 1 (please refer to the exploded top view of the rear fork, shock absorber crank and frame shown in fig. 2) has two left and right shock absorber cranks, one end of the two shock absorber cranks 1 has a rear bearing hole 10 correspondingly disposed, and two fork holes 30 spaced apart from each other are protruded from the end of the rear fork 3 corresponding to the two shock absorber cranks. The two shock absorber cranks 1 have rear bearing holes 10 ends to bridge over the two fork frame holes 30 of the rear fork frame 3, and through two sets of rear connecting fittings 4 pin joint positioning, each set of rear connecting fittings 4 includes the rear fixed part 40, the rear hollow fixed seat 41, the rear bearing 42, the rear gasket 43, and the rear dustproof gasket 44; wherein, the rear bearing 42 is installed in the rear bearing hole 10 of the shock absorber crank 1 (please refer to fig. 3), and the rear hollow fixing seat 41 is installed in the center hole of the rear bearing 42, when assembling, the rear fixing member 40 sequentially penetrates the rear hollow fixing seat 41, the rear bearing 42, the rear gasket 43, and the rear dustproof gasket 44 from the outside of the shock absorber crank 1, and then extends into the fork frame hole 30 of the rear fork frame 3 to be combined and positioned, so that the end of the shock absorber crank 1 can freely move on the rear fork frame 3 through the rear bearing 42. The other end of the shock absorber crank 1 is provided with a front bearing hole 11 corresponding to the two sides of the frame 2, the position of the front bearing hole 11 of the shock absorber crank 1 supported by the two sides of the frame 2 is provided with a concave bearing surface 20 (please refer to fig. 1), the bearing surface 20 is provided with a plurality of pivoted hole positions 21, and is connected, combined and positioned through two groups of front connecting fittings 5, each group of front connecting fittings 5 also comprises a front fixing piece 50, a front hollow fixing seat 51, a front bearing 52, a front gasket 53, a front dustproof gasket 54 and other components; the front bearing 52 is installed in the front bearing hole 11 of the shock absorber crank 1, the front hollow fixing seat 51 is installed in the center hole of the front bearing 52, when assembling, the front fixing member 50 also sequentially penetrates the front hollow fixing seat 51, the front bearing 52, the front gasket 53 and the front dustproof gasket 54 from the outer side of the shock absorber crank 1, and then extends into the corresponding hole 21 of the frame 2 to be locked and positioned, so that the end of the shock absorber crank 1 is fixed on the frame 2, and can be connected with different hole 21 positions on the frame 2 as required, having the function of adjusting displacement, and the end of the shock absorber crank 1 can freely move on the frame 2 through the front bearing 52, i.e. the connection between the two ends of the shock absorber crank 1 and the frame 2 and the rear fork 3 has the function of pivoting and rotating. In addition, a circular hole seat 12 (as shown in fig. 1 and 2) is provided between the front and rear ends of the two shock absorber cranks 1 near the rear wall, a connecting wall between the hole seat 12 and the rear bearing hole 10 is provided with a communicating cut groove 13 (as shown in fig. 1), two sides of the opposite end of the cut groove 13 are respectively fixed with a hollow bearing seat 14 (such as a cylindrical nut) and a locking member 15 which can be inserted into the shock absorber crank 1 from the outside through the cut groove 13 and extend into the bearing seat 14 for locking and positioning; the two shock absorbers 1 are provided with a circular base 16 (please refer to the partially exploded top view shown in fig. 3 and 4) in the hole seats 12, and the two base 16 is provided with an eccentric hole 160 corresponding to the eccentricity, and the outer side of the periphery of the base 16 is uniformly and densely provided with straight strip-shaped clamping ribs 161, and the corresponding hole seats 12 are provided with inner tooth-shaped inner connecting surfaces 120 capable of being clamped and positioned with the clamping ribs 161.

A rear shock absorber 6 (see also fig. 4), one end of which has a hollow through-hole-shaped pivot base 60 extending into the space separated by the two base bodies 16 and corresponding to the eccentric hole 160 of the two base bodies 16, and a long rod-shaped fine tuning element 17 (such as an inner hexagonal rotating rod) penetrating through the eccentric hole 160 of the two base bodies 16 and the pivot base 60 of the rear shock absorber 6 to connect and fix the two base bodies (as shown in fig. 1 and 3), when the fine tuning element 17 is rotated, the two base bodies 16 can be driven to rotate, so that the installation angle of the rear shock absorber 6 of the bicycle frame can be changed along with the synchronous displacement, and when the adjustment is completed, the cutting channel of the cutting groove 13 can be pressed through the screwing of the locking element 15 to control the pressing of the hole base 12 communicated with the cutting groove 13, so that the base body 16 in the hole base 12 can feel the clamping force, thereby achieving the firm positioning effect; on the other hand, if the locking member 15 is loosened, the cutting path of the cutting groove 13 is naturally not pressed any more, so that the clamping force to the seat body 16 in the seat 12 can be released, and the seat body 16 can be adjusted in displacement angle by the fine adjustment element 17 again. The other end of the shock absorber 6 corresponds to the frame 2, the end of the end is pivotally connected to a first shape connecting seat 61 (please refer to fig. 1, 3, and 4), two vertical supporting frames 22 (as shown in fig. 1 and 3) are respectively and fixedly connected to two sides of the frame 2 corresponding to the shape connecting seat 61, and a row of holes 220 is formed between the two supporting frames 22 and arranged horizontally; thereby, the lock bolts 221 can pass through the row holes 220 of the two support frames 22 and

the shape connecting seats 61 are pivotally connected to each other, so that the front end of the rear shock absorber 6 can be connected and fixed to the frame 2.

When the above components are assembled, as shown in fig. 1, the following features are provided in use:

1. the shock absorbing angle can be adjusted (please refer to fig. 5 and 6). The pivot base 60 of the rear shock absorber 6 of the present invention is connected to the eccentric hole 160 of the circular base 16 fixed in the hole base 12 of the crank 1 of the two shock absorbers, and the fine tuning element 17 passes through the eccentric hole 160 to be fixedly connected to the same body, so that when the fine tuning element 17 is rotated, the rear shock absorber 6 can be synchronously driven to change the angle, if the shock absorbing included angle (i.e. the included angle formed between the rear shock absorber 6 and the frame 2) is enlarged (i.e. the included angle shown in fig. 5 is adjusted to fig. 6), the sensitivity is relatively low, at this time, the shock absorbing capability of the rear shock absorber 6 tends to be rigid, i.e. the bouncing stroke is relatively small, and the rear shock absorber is suitable for traveling on an uphill; on the contrary, if the shock absorbing angle is adjusted to be small (as shown in fig. 5), the sensitivity becomes relatively high, and the shock absorbing capability of the rear shock absorber 6 tends to be soft, i.e., the bounce stroke is relatively large, and it is suitable for downhill walking. The cushioning and shock-absorbing effect of the shock absorber can be adjusted by each player (user) according to the control performance, the weight and the road condition.

2. The shock absorbing length can be adjusted (please refer to fig. 7 and 8). The utility model discloses frame 2 is equipped with horizontal round 220 for the support body 22 of 6 front ends of back shock absorbers, consequently, the relative position of horizontal round 220 on the support body 22 is supported in the adjustment of all permeable of the shock absorbers of different length, reaches the function of the different shock absorbers of displaceable.

3. The angle between the shock absorber crank 1 and the frame 2 can be adjusted. The frame 2 of the present invention has different positions of the hole 21 (as shown in fig. 7 and 8) relative to the receiving surface 20 of the shock absorber crank 1, so that the angle adjustment function is provided between the shock absorber crank 1 and the frame 2, and the buffering and shock-absorbing effect of the rear shock absorber 6 can be adjusted accordingly.

4. The shock absorbing angle is convenient to adjust (please refer to fig. 5 and 6). Bear aforementioned 1 st point, the utility model discloses only need the rotatory fine setting component 17 of the locking piece 15 of unscrewing again, can adjust the contained angle of moving away to avoid possible earthquakes, with the embodiment of the utility model provides a, fine setting component 17 adopts the interior hexagonal swing arm, consequently, sees through simple hexagonal spanner instrument and can drive 16 rotatory adjustment angles of pedestal, external, later, sees through the closure piece 15 again and will cut the channel oppression of ditch 13 to control and should cut the communicating hole seat 12 of ditch 13 and compress, so, the pedestal 16 in the hole seat 12 will experience the strength of clamping, and reach firm location effect, make the adjustment of moving away to avoid possible earthquakes the angle possess inseparable fastness.

As can be seen from the above description, the design of the crank structure of the shock absorber of the present invention has indeed improved the drawback that the conventional rear fork shock absorber cannot be adjusted due to the fixed length and the fixed included angle of actuation, so as to provide the user with the ability to control, weight and road conditions to adjust the shock absorbing effect of the shock absorber, thereby providing a significant improvement.

Claims

1. A frame shock absorber crank structure which is characterized in that: two ends of the base are respectively pivoted with the frame and the upper tube of the rear fork frame, a hole seat is arranged in the middle, a cutting groove is cut on the wall body of the hole seat, a bearing seat which is hollow inside and a locking piece which can be inserted into the crank of the shock absorber from the outside and locked and positioned with the bearing seat after cutting the groove are respectively arranged on two sides of the opposite end of the cutting groove, a seat body which can be finely adjusted and rotated is arranged in the hole seat, and an eccentric hole is arranged on the seat body; one end of the shock absorber has a hollow through hole-shaped pivot base corresponding to the eccentric hole of the base, and a fine adjustment element is inserted, connected and fixed, and the other end of the shock absorber is pivoted to the frame.

2. The crank structure of a frame shock absorber according to claim 1, wherein: the shock absorber is pivoted with a connecting seat corresponding to the end of the frame in a pivoting manner between the shock absorber and the frame, vertical support frames are fixedly connected to two sides of the frame corresponding to the connecting seat, and a row of holes corresponding to transverse arrangement are formed between the two support frames, so that a lock bolt penetrates through the two support frames and the connecting seat to be pivoted and positioned.

3. The crank structure of a frame shock absorber according to claim 1, wherein: the two ends of the shock absorber crank are connected with the frame and the rear fork frame through connecting fittings, each set of connecting fittings comprises a fixing piece, a hollow fixing seat, a bearing, a gasket and a dustproof gasket; the bottom end of the shock absorber crank is provided with a bearing hole for the bearing to be arranged, the hollow fixed seat is arranged in the bearing, and the fixing piece sequentially penetrates through the hollow fixed seat, the bearing, the gasket and the dustproof gasket from the outer side of the shock absorber crank to be combined.

4. The crank structure of a frame shock absorber according to claim 1, wherein: the cutting groove can be disposed on the wall between the bearing hole and the hole seat of the crank pivot fork upper tube.

5. The crank structure of a frame shock absorber according to claim 1, wherein: the hollow inner wall of the hole seat and the outer wall of the seat body are straight tooth-shaped wall surfaces.

6. The crank structure of a frame shock absorber according to claim 1, wherein: the frame is provided with a plurality of holes at the pivot joint of the crank end.