TWM570264U - Front fork of bicycle - Google Patents

Abstract

The present invention relates to a bicycle front fork that includes a straight tube, a first link, a second link, a front fork assembly, and a suspension assembly. The straight pipe defines a turning axial direction and is pivotally disposed on a frame along the turning axis, and is provided with one first pivoting portion and a second pivoting portion arranged along the axial direction of the straight pipe. The first connecting rod includes two first arm portions and a first connecting portion traversing the two first arm portions. One end of the two first arm portions is pivotally disposed on the first pivoting portion. The second link includes a second arm portion and a second connecting portion integrally disposed on the second arm portion. One end of the second arm portion is pivotally disposed on the second pivot portion. The front fork assembly includes a bifurcated tube and a connecting tube traversing the two fork tubes, the second pivoting portion is located between the first pivoting portion and the connecting tube, and each of the fork tubes is provided with two along the fork a third pivoting portion of the axial direction of the tube, wherein the other ends of the two first arm portions are respectively pivoted to the third pivoting portion of the two forked tubes adjacent to the straight tube, and the second arm portions are further One end is respectively pivotally disposed on the other third pivoting portion of the bifurcated tube. The one end of the suspension assembly is pivoted on the first link, and the other end is pivotally disposed on the connecting pipe.

Description

Bicycle front fork

This creation is about a bicycle front fork.

According to the bicycle, the front fork is used for pivoting with the frame. The conventional fork has an integrally connected two-legged tube and a straight tube. The front fork is pivotally provided with a front wheel, which is controlled by controlling the handle of the frame. The straight pipe rotates the two fork pipes to steer the front wheels. In order to improve the comfort during riding, the two fork pipes are respectively provided with a suspension structure. When the front wheels are impacted by an external force, the two suspension structures are Each is compressed to cushion the impact, and the bicycle fork disclosed in TWM410005 is such.

However, such conventional bicycle front forks have the following disadvantages. Since the conventional bicycle front fork is braked, not only the suspension structure is compressed, but also the weight of the knight will move forward, causing the front fork to swing forward relative to the ground system. The so-called [dumping nod] phenomenon, and the nodding phenomenon of the brakes will cause the towing distance (that is, the distance between the tire contact point and the front wheel turning axis extending to the ground projection point) to be shorter, and the shorter the towing distance will affect the riding time. Handling and stability. In addition, since the two fork tubes are respectively provided with a suspension structure, when the force of the two fork tubes is uneven, the compression distance of the suspension structure of the two fork tubes is different, that is, the pivoting is caused by the two The front wheel of the fork pipe is inclined with respect to the frame, and the bicycle is easily turned over due to the tilt of the front wheel relative to the frame at a high speed, so there is a safety concern in use, and there is a drawback that needs to be improved.

Therefore, it is necessary to provide a novel and progressive bicycle front fork to solve the above problems.

The main purpose of the present invention is to provide a bicycle front fork. The straight tube and the two-legged tube of the bicycle front fork are pivotally connected by two connecting rods. When the bicycle is braked, the towing distance is not shortened, so that the braking time can be improved. The handling and stability, in addition, when the bicycle front fork is stressed, the shock absorber structure can buffer the impact between the straight tube and the double tube and can make the compression displacement of the double tube relative to the straight tube.

To achieve the above object, the present invention provides a bicycle front fork including a straight tube, a first link, a second link, a front fork assembly, and a suspension assembly. The straight pipe defines a turning axial direction and is pivotally disposed on a frame along the turning axis, and is provided with one first pivoting portion and a second pivoting portion arranged along the axial direction of the straight pipe. The first connecting rod includes two first arm portions and a first connecting portion traversing the two first arm portions. One end of the two first arm portions is pivotally disposed on the first pivoting portion. The second link includes a second arm portion and a second connecting portion integrally disposed on the second arm portion. One end of the second arm portion is pivotally disposed on the second pivot portion. The front fork assembly includes a bifurcated tube and a connecting tube traversing the two fork tubes, the second pivoting portion is located between the first pivoting portion and the connecting tube, and each of the fork tubes is provided with two along the fork a third pivoting portion of the axial direction of the tube, wherein the other ends of the two first arm portions are respectively pivoted to the third pivoting portion of the two forked tubes adjacent to the straight tube, and the second arm portions are further One end is respectively pivotally disposed on the other third pivoting portion of the bifurcated tube. The one end of the suspension assembly is pivoted on the first link, and the other end is pivotally disposed on the connecting pipe.

The structural features of the present invention and the intended effects thereof will be described below by way of a preferred embodiment, but are not intended to limit the scope of the present invention.

Please refer to FIGS. 1 to 6 , which show a preferred embodiment of the present invention. The bicycle front fork of the present invention comprises a straight tube 1 , a first link 2 , a second link 3 , a front fork assembly 4 and a Shock absorber assembly 5.

The straight tube 1 defines a turning axis X and is pivotally disposed on a frame 9 along the turning axis X. The first pivoting portion 11 and a second pivoting portion are arranged along the axial direction of the straight tube 1. Department 12.

The first link 2 includes two first arm portions 22 and a first connecting portion 21 that is disposed on one of the two first arm portions 22. One end of the two first arm portions 22 is pivotally disposed on the first pivoting end. Part 11.

The second link 3 includes two second arm portions 32 and a second connecting portion 31 integrally disposed on the second arm portion 32. One end of the second arm portions 32 is pivotally disposed on the second pivoting portion. Department 12.

The front fork assembly 4 includes a two-legged tube 41 and a connecting tube 42 that traverses the two-legged tube 41. The second pivoting portion 12 is located between the first pivoting portion 11 and the connecting tube 42. The tube 41 is provided with a third pivoting portion 43 arranged along the axial direction of the forked tube 41, and the other ends of the two first arm portions 22 are respectively pivotally disposed on the second forked tube 41 adjacent to the straight tube 1 The other ends of the two second arm portions 32 are respectively pivotally disposed on the other third pivoting portion 43 of the bifurcated tube 41. In the embodiment, the two forks 41 are respectively provided with a hook 45 away from one end of the straight tube 1 , and the two hooks 45 are pivotally connected to a wheel set 91 .

In detail, a contact distance D between the contact point of the wheel set 91 contacting the ground and the contact point of the turning axis X extending to the ground defines a towing distance D (as shown in FIG. 5), which is when the bicycle performs braking. The assembly 4 will swing relative to the ground in the forward direction of the bicycle, and the first link 2 and the second link 3 will swing relative to the front fork assembly 4 toward the ground, the straight tube is opposite to the first link 2 And the second link 3 swings and slides along the turning axis X. By the first link 2 and the second link 3, the turning axis X does not swing relative to the ground, thereby effectively avoiding dragging The distance D is shorter (as shown in Fig. 6), so compared with the conventional bicycle, the creation can effectively improve the handling and stability of the vehicle.

In the embodiment, the first connecting portion 21 and the two first arm portions 22 are integrally formed, and the second connecting portion 31 and the two second arm portions 32 are integrally formed, and the connecting tube 42 and the two-legged tube are integrally formed. The 41 is integrally formed to have a strong structural strength, and the first link 2, the second link 3, and the front fork assembly 4 are prevented from being deformed by an external force.

One end of the suspension assembly 5 is pivotally disposed on the first link 2 , and the other end is pivotally connected to the connecting pipe 42 .

With the above structure, when the frame 9 is impacted by the uneven road surface during running, the first link 2 and the second link 3 will swing relative to the straight pipe 1 and the double fork 41. The two-way tube 41 is moved in the direction of the straight tube 1. Since the suspension assembly 5 is pivotally disposed on the connecting tube 42 and the first connecting rod 2, the suspension assembly 5 is subjected to the first connection. The rod 2 and the connecting tube 42 are compressed and compressed to provide a buffering function when the two-legged tube 41 moves closer to the straight tube 1, and the first connecting rod 2 and the second connecting rod 3 can The moving distance of the two-legged pipe 41 relative to the straight pipe 1 is the same to avoid the inclination of the wheel set 91 with respect to the straight pipe 1, and thus has high safety.

Specifically, the two first arm portions 22 are integrally provided with two convex portions 23, and the convex portions 23 are located between the two ends of the first arm portion 22 along the longitudinal direction. The component 5 is pivotally disposed on the two convex portions 23 . The first connecting portion 21 is disposed transversely between the two ends of the two first arm portions 22 in the longitudinal direction, and the second connecting portion 31 is disposed transversely between the two ends of the second arm portions 32 in the longitudinal direction.

In the embodiment, the first pivoting portion 11 and the second pivoting portion 12 are sleeves that are sleeved on the straight tube 1. The first pivoting portion 11 is provided with two first bumps 111. One end of the first arm portion 22 is respectively pivotally disposed on the two first protrusions 111, and the second pivot portion 12 is provided with two second protrusions 121. One ends of the second arm portions 32 are respectively pivoted on the two The second protrusions 121 are located on one side of the straight tube 1 facing the front fork assembly 4, and the two second protrusions 121 are located on the straight tube 1 away from the front fork assembly 4 side.

The two third pivoting portions 43 are convexly disposed on one side of the straight tube 1 away from the straight tube 1 .

The two first arm portions 22 extend away from the first pivoting portion 11 toward the two third pivoting portions 43. The second arm portions 32 are directed by the second pivoting portion 12 toward the second The direction of the three pivoting portions 43 extends away from each other to match the distance of the two-legged tube 41.

Two lugs 44 are protruded from the connecting tube 42 in the direction of the suspension assembly 5, and one end of the suspension assembly 5 is pivotally disposed on the two ears 44.

The suspension assembly 5 and the second link 3 are located between the two forks 41. The two first arms 22 are pivotally connected to one end of the two forks 41 and a stopper 24 is connected thereto. The stopper 24 is available. The large object is blocked from extending between the two forks 41 to prevent the large object from contacting the suspension assembly 5 to damage the suspension assembly 5, or being damaged by the suspension assembly 5 if the human body is prevented from entering. .

In summary, the bicycle front fork, when the bicycle is braked, the straight tube is less likely to swing relative to the ground, so that the towing distance can be effectively prevented, so that the handling can improve the handling and stability of the bicycle when compared with the conventional bicycle. The suspension component is pivotally disposed on the connecting pipe and the first connecting rod, and the shock absorbing component is compressed by the first connecting rod and the connecting pipe to provide the two-legged pipe and the straight The tube phase is close to the buffering function when moving, and the first link and the second link can make the moving distance of the two fork tubes relative to the straight tube the same, so as to avoid tilting the wheel set relative to the straight tube, so High security.

1‧‧‧ straight tube

2‧‧‧first link

3‧‧‧Second link

4‧‧‧ Front fork assembly

5‧‧‧Shock components

9‧‧‧ frame

11‧‧‧First pivotal

12‧‧‧Second pivotal

111‧‧‧First bump

121‧‧‧second bump

21‧‧‧First connection

22‧‧‧First arm

23‧‧‧ convex

24‧‧‧ §

31‧‧‧Second connection

32‧‧‧ second arm

41‧‧‧ fork tube

42‧‧‧Connecting tube

43‧‧‧ Third pivotal joint

44‧‧‧ ear

45‧‧‧ claws

91‧‧‧ Wheel set

X‧‧‧ turning axis

D‧‧‧Towing distance

1 is a perspective view of a preferred embodiment of the present invention. 2 is an exploded view of a preferred embodiment of the present invention. Figure 3 is a schematic view showing the assembly of a preferred embodiment of the present invention. Figure 4 is a side elevational view of a preferred embodiment of the present invention. 5 and 6 are schematic views showing the operation of a preferred embodiment of the present invention.

Claims (10)

A bicycle front fork includes: a straight pipe defining a turning axial direction and pivoting on a frame along the turning axis, and providing a first pivoting portion and a second pivot along the axial direction of the straight pipe a first connecting rod, comprising: a first arm portion and a first connecting portion traversing the first arm portion, wherein one end of the two first arm portions is pivotally disposed on the first pivoting portion a second connecting rod, comprising two second arm portions and a second connecting portion integrally disposed on the second arm portion, wherein one end of the two second arm portions is pivotally disposed on the second pivoting portion; The front fork assembly includes a bifurcated tube and a connecting tube traversing the two fork tubes, the second pivoting portion is located between the first pivoting portion and the connecting tube, and each of the fork tubes is provided with two along the fork a third pivoting portion of the axial direction of the tube, wherein the other ends of the two first arm portions are respectively pivoted to the third pivoting portion of the two forked tubes adjacent to the straight tube, and the second arm portions are further One end is respectively pivotally disposed on the other third pivoting portion of the two-legged tube; a shock-absorbing component, one end of which is pivotally disposed on the first connecting rod, and the other end is pivotally disposed on the connecting tube. The bicycle front fork according to claim 1, wherein one of the two first arm portions is integrally provided with two convex portions, and each of the convex portions is located between the two ends of the first arm portion along the longitudinal direction. The suspension component is pivotally disposed on the two convex portions. The bicycle front fork according to claim 1, wherein the first connecting portion is disposed transversely between the two ends of the two first arm portions in the longitudinal direction, and the second connecting portion is disposed transversely to the second second arm portion Between the ends of the length direction. The bicycle front fork according to claim 1, wherein the first pivoting portion and the second pivoting portion are sleeved on the sleeve of the straight tube, and the first pivoting portion is provided with two first protrusions. One of the two first arm portions is respectively disposed on the two first protrusions, and the second pivot portion is provided with two second protrusions, and one of the two second arm portions is respectively pivotally disposed on the second second protrusions And the two first protrusions are located on one side of the straight tube toward the front fork assembly, and the two second protrusions are located on a side of the straight tube away from the front fork assembly. The bicycle front fork according to claim 1, wherein each of the fork tubes is laterally disposed away from a side of the straight tube to form the two third pivot portions. The bicycle front fork according to claim 1, wherein the two first arms extend away from the first pivoting portion toward the two third pivoting portions, and the second arm portions are separated by the second The pivoting portion extends away from the two third pivoting portions. The bicycle front fork according to claim 1, wherein the connecting tube is further provided with two ears in a direction of the suspension component, and one end of the suspension component is pivotally disposed on the two ears. The bicycle front fork according to claim 1, wherein the two forks are respectively provided with a hook away from one end of the straight pipe, and the two hooks are pivotally connected to a wheel set. The bicycle front fork according to claim 1, wherein the suspension assembly and the second link are located between the two forks, and the two first arms are pivotally disposed at one end of the two forks and a stopper is connected . The bicycle front fork according to claim 1, wherein the first connecting portion and the two first arm portions are integrally formed, and the second connecting portion and the second arm portion are integrally formed, the connecting tube and the second connecting portion The fork tube is integrally formed.