CN212500835U

CN212500835U - Improved structure of single-gun shock-absorbing front fork for bicycle

Info

Publication number: CN212500835U
Application number: CN202020324017.3U
Authority: CN
Inventors: 陈永富
Original assignee: Scada International Co Ltd
Current assignee: Scada International Co Ltd
Priority date: 2019-07-31
Filing date: 2020-03-16
Publication date: 2021-02-09
Anticipated expiration: 2030-03-16
Also published as: TWM591949U; NL2025340B1; NL2025340A

Abstract

The utility model discloses a bicycle list rifle shock attenuation front fork improvement structure, including sleeve fixed square shaft axle center, the inside key of standpipe combines sleeve pipe and bottom montage riser seat, the sleeve pipe is inside cup joints to the square shaft axle center with the kingpin sliding sleeve interval, a bearing lock connects on square shaft axle center top, the bearing hole must be worn through by a screw rod, wear set stroke limit circle and spring on the screw rod after, with an adjusting nut cover in stroke limit circle and roof pressure spring, adjusting nut is connected to the spring fixing base, the screw rod passes through spring fixing base back lock locknut, the spring fixing base is spacing in the standpipe, wear pad is buried underground at the square shaft axle center four sides, the sleeve pipe also must keep the equipment precision for wear-resisting material, wear-resisting, long service life, the soft or hard degree of screw rod must adjust the shock attenuation, and flexible stroke scope must be restricted to the stroke circle, the interior air chamber of standpipe has airtight shock attenuation buffering effect.

Description

Improved structure of single-gun shock-absorbing front fork for bicycle

Technical Field

The utility model relates to a bicycle technical field, especially a bicycle single gun front fork improvement structure of shocking proof, its bearing sleeve both sides wear-resisting material can keep the equipment precision longer, adjustable soft or hard degree of moving away to avoid possible earthquakes and the flexible stroke scope of restriction, the airtight buffering effect of moving away to avoid possible earthquakes of air chamber utensil.

Background

Refer to taiwan patent application No. 96127344, entitled "shock absorbing structure of front fork of bicycle" which is mainly used to rotate a rotating member when the bicycle runs on a road on a flat ground, so that when the front wheel of the bicycle is impacted, the force transmitted from the front wheel can be absorbed and buffered by the action of the shock absorbing assembly and the elastic member. When the bicycle goes up the slope, the rotating part is rotated, the shock absorbing component and the elastic part can not provide the buffering effect, and a user does not need to consume more strength to tread the bicycle. Therefore, the selection of shock absorption and non-shock absorption can be made, and the hardness of the shock absorption can not be adjusted.

Refer to the new patent of taiwan patent application No. 96211816, "sliding guide device of steering tube shock absorber", which is only limited by the corresponding matching of the shapes of the sliding parts of the sliding bush set and the center shaft guide rod, so as to avoid the shaking problem caused by the gap between the tubes in the prior art. It does not have a design to adjust the hardness of the shock absorber.

Refer to taiwan patent application No. 97213029 for a sliding bush set of front fork steering tube shock absorber, wherein the bush is made of wear-resistant plastic material, but has no relation with the ball, and the ball is adopted to create new problems to be overcome, which is only discussing the bush technology.

Referring to taiwan patent application No. 100204562, the time taken for the first tube unit to move from the second position to the first position is longer than the time taken for the first tube unit to move from the first position to the second position, so that the design feature can increase the riding comfort. The biasing force of the main elastic part can be adjusted by adjusting the screwing length between the thread section of the second pipe body and the screw, so that the function and the advantage of adjusting the frictional damping force are generated. However, the three rows of steel balls in point contact are insufficient in support accuracy and stability. The linkage piece has no way to be adjusted or needs to be disassembled in a large quantity to be adjusted.

Refer to taiwan patent application No. 101203912 for a roller axial sliding type front fork suspension device, which utilizes a fixed shaft with a first groove in the longitudinal axis direction, an inner sleeve with a second groove on the inner wall, and a sliding member which is a circular roller body mounted in the first and second grooves. Nothing else is left.

Referring to taiwan patent application No. 101225438, "linear sliding device for front fork shock absorber", the ball bushing set is not fixed to the steering tube, so the ball bushing set can move relative to the inner guide rod and also can move linearly relative to the outer steering tube.

Referring to the new patent of "head stem buffer shock absorbing structure of bicycle" in taiwan patent application No. 106202015, the reaction force of the front wheel is absorbed by the first spring and the second spring in sections. The down force of the bicycle handle is absorbed by the first spring and the second spring in sections, and the vertical pipe is combined with the polygonal section of the sleeve pipe to realize transmission.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to the not enough of above-mentioned prior art, provide a bicycle list rifle shock attenuation front fork improvement structure. The wear-resistant materials on the two sides of the roller pin sliding sleeve can keep the assembly precision for a longer time, the soft and hard degree of shock absorption can be adjusted, the range of telescopic stroke can be limited, and the air chamber has the airtight shock absorption effect.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is: provided is an improved structure of a bicycle single-gun shock-absorbing front fork, comprising: a module lower fork upper square hole and a shock absorber structure bottom end are tightly matched and fixed, and the shock absorber structure is combined into a bicycle front fork, wherein the shock absorber structure comprises a sleeve barrel, a square shaft axis is fixed on the sleeve barrel and is used as a fixed end, a movable end comprises a vertical tube internal fixing sleeve and a bottom assembling vertical tube seat, the sleeve barrel is internally sleeved on the square shaft axis at intervals of a needle roller sliding sleeve, a bearing seat is locked at the top end of the square shaft axis, a screw rod penetrates through a bearing seat inner hole, a stroke limiting ring and a spring are sleeved on the screw rod, an adjusting nut is sleeved on the stroke limiting ring and a jacking spring and connected to a spring fixing seat, the screw rod penetrates through the spring fixing seat and is locked at the tail end, two ends of the spring fixing seat are respectively fixed in the vertical tube by buckling springs, the vertical tube and the sleeve barrel are combined by keys, grooves are arranged on four sides of the square shaft axis and are embedded, Wear-resisting, long-lived, the hardness that the screw rod must adjust to move away to avoid possible earthquakes, and the flexible stroke scope must be restricted to the stroke limit circle, and the formation air chamber has the airtight cushioning effect of moving away to avoid possible earthquakes of a considerable degree in the standpipe.

Furthermore, the sleeve is fixed with the axis of the square shaft, and the axis of the square shaft penetrates through the sleeve and then is fixed by a third buckle spring group.

Furthermore, a second air chamber is formed in the hollow part of the axis of the square shaft, and a tail nut is locked at the tail end of the axis of the square shaft to seal the second air chamber and enable the screw to act to form a piston.

Furthermore, a dustproof sleeve is arranged between the sleeve and the vertical pipe sleeve.

Further, the roller sleeve comprises a retainer and a plurality of rollers.

The utility model has the advantages that: the utility model provides a pair of bicycle list rifle shock attenuation front fork improvement structure does for the industry first see and accord with the novelty requirement of novel patent, and its comprehensive innovative design accords with the creative requirement of novel patent, and its bearing bush both sides wear-resisting material gets longer time and keeps the equipment precision, adjustable soft or hard degree of moving away and the flexible stroke scope of restriction, and the airtight buffering effect of moving away to avoid possible earthquakes of air chamber utensil can reach the industrial utilization nature of preferred.

Drawings

Fig. 1 is a perspective view of a bicycle front fork according to an embodiment of the present invention.

Fig. 2 is a three-dimensional sectional view of the movable end of one embodiment of the present invention.

Fig. 3 is a three-dimensional sectional view of a fixed end of an embodiment of the present invention.

Fig. 4 is a plan view of the shock absorber structure according to an embodiment of the present invention.

Fig. 5 is a cross-sectional view of the connection between the fixed end and the movable end of the embodiment of the present invention.

Fig. 6 is an exploded perspective view of a bicycle front fork according to an embodiment of the present invention.

Fig. 7 is a perspective exploded view of a shock absorber according to an embodiment of the present invention.

Fig. 8 is a perspective view of a bicycle front fork according to an embodiment of the present invention applied to a bicycle.

In the drawings, 1-bicycle front fork; 10-module lower fork; 11-well; 20-a shock absorber structure; 21-binding column; 31-a sleeve; 32-square shaft center; 321-a groove; 322-a second air chamber; 33-wear resistant sheet; 34-a third catch spring; 40-a vertical pipe; 41-a first keyway; 42-vertical pipe sleeve; 43-a first catch spring; 44-a first air chamber; 50-a cannula; 51-a second keyway; a 52-bond; 53-inner bore; 60-a roller pin sliding sleeve; 61-a holder; 62-rolling needles; 70-bearing seat; 701-air flow control holes; 71-inner hole; 72-screw;

721-tool assembly hole; 73-a stroke limit ring; 74-a spring; 75-adjusting the screw cap; 76-spring fixing seat; 761-a second catch spring; 77-locknut; 80-dustproof sleeve; a-a fixed end; b-the active end.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 8, the utility model provides a bicycle single-gun shock-absorbing front fork improved structure, which comprises:

a hole 11 is formed above a module lower fork 10, a combining column 21 is formed at the bottom end of a shock absorber structure 20, and the combining column 21 and the hole 11 are tightly matched and fixed to assemble a bicycle front fork 1; the method is characterized in that: the shock absorber structure 20 comprises a fixed end (A) and a movable end (B), wherein the fixed end (A) is a sleeve 31 on which a square shaft center 32 is fixed; the movable end (B) includes a vertical tube 40 having a plurality of first key slots 41 therein, a sleeve 50 having a plurality of second key slots 51 thereon, the sleeve 50 being fitted into the vertical tube 40 for limiting by a first buckle spring 43, and the first and

second key slots

41, 51 being correspondingly fixed to the sleeve 50 and the vertical tube 40 by a plurality of keys 52, the vertical tube 40 having a bottom end connected to a vertical tube 42, the sleeve being fitted into the square shaft 32 at intervals by needle sleeves 60, a retainer 70 being fixed to the top end of the square shaft 32, an inner hole 71 of the retainer 70 being penetrated by a screw 72, the screw 72 being penetrated by a stroke limiting ring 73 and a spring 74, the stroke limiting ring 73 being fitted with an adjusting nut 75 and pressing against the spring 74, the adjusting nut 75 being connected to a spring fixing seat 76, the screw 72 being penetrated by the spring fixing seat 76 and having a lock nut 77 at the end, the two ends of the spring fixing seat 76 are respectively fixed in the vertical tube 40 by a second buckle spring 761, the four sides of the square shaft center 32 are provided with grooves 321 to embed a plurality of wear-resistant pieces 33, the sleeve 50 is also made of wear-resistant material to maintain the assembling precision, wear resistance and long service life, the screw 72 can adjust the hardness of shock absorption, the stroke limiting ring 73 can limit the range of telescopic stroke, the vertical tube 40 forms a first air chamber 44, and the air flow control holes 701 arranged on the bearing seat 70 have a certain degree of air-tight shock absorption and buffering effects.

In the improved structure of the bicycle single-gun shock-absorbing front fork, the square shaft center 32 is fixed on the sleeve 31, and the square shaft center 32 penetrates through the sleeve 31 and then is fastened and fixed by a third fastening spring 34.

In the improved structure of the bicycle single-gun shock-absorbing front fork, the inner part of the square shaft center 32 is hollow to form a second air chamber 322, and the tail end of the square shaft center 32 is locked with a tail nut 323 to seal the second air chamber 322, so that the screw 72 acts to form a piston.

In the improved structure of the bicycle single-gun shock-absorbing front fork, a dust-proof cover 80 is disposed between the sleeve 31 and the vertical tube 42.

The improved structure of bicycle single-gun shock-absorbing front fork, wherein the roller pin sliding sleeve 60 comprises a retainer 61 and a plurality of roller pins 62.

As shown in fig. 2, the screw 72 has a tool coupling hole 721 for allowing a hand tool to rotate, and during the rotation, the adjusting nut 75 is driven to move up and down to change the force of the compression spring 74, thereby changing the hardness of the shock absorber.

As shown in fig. 3, when the shock absorbing action of the shock absorber is performed, the movable end (B) slides down and up, and at this time, the needle roller 62 rotates clockwise or counterclockwise.

As shown in fig. 5, the square shaft center 32 of the fixed end (a) is square, the needle roller sliding sleeve 60 sleeved on the outer periphery is also square, and the inner hole 53 of the sleeve 50 is also square and sleeved on the outer periphery of the needle roller sliding sleeve 60, so that there is no problem that the sleeve 50 slides on the square shaft center 32, and the square can drive the square shaft center 32 to rotate when the sleeve 50 rotates along with the vertical tube 40.

As shown in FIG. 8, the bicycle 90 includes a handlebar 91, a front wheel 92 and a frame 93. the front fork 1 is assembled with the handlebar 91, the front wheel 92 and the frame 93, and the front wheel 92 follows the steering when the handlebar 91 is turned.

The above embodiments are merely illustrative and not restrictive, and all equivalent changes and modifications made by the methods described in the claims are intended to be included within the scope of the present invention.

Claims

1. An improved structure of a bicycle single-gun shock-absorbing front fork comprises:

a hole is arranged above a module lower fork, a combination column is formed at the bottom end of a shock absorber structure, and the combination column and the hole are tightly matched and fixed to form a bicycle front fork; the method is characterized in that: the shock absorber structure comprises a fixed end and a movable end, wherein the fixed end is a square shaft axis fixed on a sleeve; the movable end comprises a vertical tube, a plurality of first key slots are arranged in the vertical tube, a plurality of second key slots are arranged on the periphery of the sleeve, the sleeve is sleeved in the vertical tube to limit the position of a first buckling spring, the first key slots and the second key slots are correspondingly fixed on the sleeve and the vertical tube by a plurality of keys, the bottom end of the vertical tube is connected with a vertical tube sleeve, the sleeve is sleeved on the shaft center of the square shaft at intervals by a roller pin sliding sleeve, a bearing seat is locked and fixed at the top end of the shaft center of the square shaft, a screw rod penetrates through the inner hole of the bearing seat, a stroke limiting ring and a spring penetrate through the screw rod, an adjusting nut is sleeved on the stroke limiting ring and presses the spring, the adjusting nut is connected to a spring fixing seat, the screw rod penetrates through the spring fixing seat and is locked at the tail end by a check nut, two ends of the spring fixing seat are respectively fixed in the vertical tube by a second buckling spring, grooves are arranged on the, the sleeve is also made of wear-resistant material, so that the assembly precision, wear resistance and long service life can be maintained, the hardness of the screw can be adjusted to avoid shock, the stroke limiting ring can limit the range of the telescopic stroke, the vertical pipe is internally provided with the first air chamber, and the plurality of air flow control holes arranged on the bearing seat have a certain degree of air-tight shock-avoiding buffering effect.

2. The improved structure of a bicycle single-gun shock-absorbing front fork as claimed in claim 1, wherein: the sleeve is fixed with the axis of the square shaft, and the axis of the square shaft penetrates through the sleeve and then is fixed by a third buckle spring group.

3. The improved structure of a bicycle single-gun shock-absorbing front fork as claimed in claim 1, wherein: the inner part of the square shaft axis is hollow to form a second air chamber, the tail end of the square shaft axis is locked with a tail nut to seal the second air chamber, and the screw rod is made to act to form a piston.

4. The improved structure of a bicycle single-gun shock-absorbing front fork as claimed in claim 1, wherein: a dustproof sleeve is arranged between the sleeve and the vertical pipe sleeve.

5. The improved structure of a bicycle single-gun shock-absorbing front fork as claimed in claim 1, wherein: the needle roller sliding sleeve comprises a retainer and a plurality of needle rollers.