TWM452910U - Turning restricting device for bicycle front fork - Google Patents

Description

Bicycle front fork steering restriction device

The present invention relates to a steering restriction device and aims to provide a steering restriction device which is particularly suitable for use in a bicycle suspension fork to maintain the original steering control function of the bicycle and even to combine the front fork with the suspension effect.

Press, the general bicycle system uses the handle to control the degree of left and right swing of the front wheel to maintain the balance of the car body and achieve the purpose of controlling the steering of the car body; and the handle of the bicycle is extended by a vertical and vertical extending pipe to extend the handle and the front fork The distance between the tubes makes the steering action of the bicycle tend to be slowed down; and a pressing component is additionally provided to form the combination of the upper fork upper tube and the vertical tube, so that the front fork upper tube and the frame can be maintained. Some stability.

Secondly, with the continuous improvement of bicycle functions and uses, the above traditional steering mechanism will not be able to meet the design requirements of bicycles; for example, during the actual riding process of the bicycle, the rider often has to rely on acceleration or road bumps. The way the hips are vacant is to ride the bicycle. At this time, the rider's center of gravity will lean forward toward the handle. The handle supports the rider to balance the center of gravity. The same front wheel vibration is transmitted to the rider via the steering mechanism. Arms.

Therefore, in addition to the stable engagement structure, many steering mechanisms between the bicycle handle and the front fork further provide a suitable shock absorbing effect, in order to increase the comfort of bicycle riding and reduce sports injuries. Similar to the bicycle steering mechanism with suspension effect, mainly equipped with an outer tube a first set of joints for connection with the handle of the bicycle, and a mandrel extending into the outer tube as a second set of joints for connection with the front fork of the bicycle, and additionally between the outer tube and the mandrel A spring is disposed between the outer tube and the mandrel for elastic resetting function, thereby providing a bicycle with a shock absorbing function.

Furthermore, the body of the bicycle is composed of a pipe member, and the section in which the steering mechanism is assembled with the vehicle body is composed of a single pipe member or a pipe and a rod which are mutually sleeved, and the outer wall thereof must be a perfect circle. The cross-sectional configuration is such that it can rotate relative to the vehicle body; however, if the tubes and rods that are nested together maintain the configuration of the full-circle cross-section, the original bicycle will be affected by the relative rotation between the pipe and the rod. The steering control function not only causes inconvenience in use and operation; in particular, when the similar steering mechanism must incorporate the shock absorber effect, it is more likely to be dangerous because the steering cannot be normally controlled.

In view of this, the present invention is to provide a steering restriction device which is particularly suitable for use in a bicycle front fork to maintain the original steering control function of the bicycle, and even to combine the front fork with the suspension effect, as its main purpose.

In order to achieve the above, the steering restriction device of the suspension front fork includes: an outer tube, a shaft tube, a bushing group, and a lining group; wherein the outer tube is connected to the handle of the bicycle, The inner wall surface of the predetermined section of the outer tube is provided with a plurality of first rotation defining portions; the shaft tube is oppositely disposed inside the outer tube for connecting with the bicycle front fork, and the shaft tube extends into the outer tube oppositely The outer wall of the segment is provided with a plurality of second rotation defining portions respectively corresponding to the respective first rotation defining portions.

As for the bushing set, a plurality of first linings are provided, and each of the first linings is provided for The lining is disposed between the corresponding first rotation defining portion and the second rotation defining portion; and the lining group is provided with a plurality of second linings, each of the second linings being respectively lined with the corresponding first rotation defining portion And the first lining; wherein each of the first linings is axially displaceable relative to the outer tube and the shaft tube, and is composed of the first lining and the first rotation defining portion and the second rotation defining portion Cooperating with each other, restricting the outer tube from rotating relative to the shaft tube. The purpose of controlling the front fork by the handle of the bicycle is achieved; and, by the design of the lining set, the wear of the outer tube caused by the axial displacement of each of the first linings can be reduced.

According to the above main structural features, the steering limiting device further has a guide post for restricting a relative sliding stroke between the shaft tube and the outer tube, and a guide between the guide post and the outer tube. The outer tube and the shaft tube constitute an elastic element that elastically resets.

According to the above main structural features, the outer tube is provided with a fixing block at an inner wall thereof above the shaft tube, and a center of the fixing block is provided with a screw hole, and the top end of the guiding rod passes through the shaft tube and is The screw hole is screwed; a stopper is fixed to the top end of the shaft tube, and a hole is formed in the center of the block, and the block is located below the elastic member and is in contact with the elastic member; The guide post is provided with a stop portion having an outer diameter larger than the perforation of the stop block at a bottom end thereof through the through hole of the stop block.

According to the above main structural features, at least one spacer is further disposed between the blocking block and the stopping portion of the guiding post.

According to the above main structural features, each of the first rotation defining portions of the outer tube has a planar shape, and each of the second rotation defining portions of the shaft tube has a planar shape.

According to the above main structural features, each of the first linings is further provided with a complex a plurality of groove portions for receiving the rolling member.

Each of the groove portions is arranged in parallel up and down, and the rolling member is a needle roller; or the rolling member is a ball.

According to the above main structural features, the bottom end of the outer tube is provided with an elastic dust jacket correspondingly connected to the front fork of the bicycle.

According to the above main structural features, the top end of the elastic dust jacket is provided with a cover body for screwing and fixing to the outer tube, and the cover body is provided with a through hole for the shaft tube to pass through.

According to the above main structural features, the shaft tube is perforated through the cover body and screwed to the bicycle front fork.

According to the above main structural features, the first linings are further formed with a connecting portion to be integrated.

According to the above main structural features, the second linings are further formed with a connecting portion to be integrated.

Specifically, the steering restriction device of the bicycle front fork can produce the following effects:

1. The first lining is used to reduce the contact gap between the outer tube and the shaft tube, so as to obtain a more stable and reliable steering restriction effect.

2. If necessary, only the worn first lining or second lining should be replaced, which can effectively extend the service life of the steering limiting device.

3. It is easy to combine the shock absorber effect with a relatively simple and reliable design.

4. The design of the shaft tube surrounded by the plurality of first linings is more advantageous for the assembly and maintenance work of the steering restriction device.

The characteristics of this creation can be clearly understood by referring to the detailed description of the drawings and the examples.

As shown in the first diagram of the present invention, the steering restriction device appearance structure diagram, the second diagram of the creation of the steering restriction device structure exploded view, and the third diagram of the creation of the steering restriction device structure sectional view, the present invention aims to provide a particularly suitable application. In the bicycle front fork, in order to maintain the original steering control function of the bicycle, and even the steering restriction device capable of combining the front fork with the suspension effect, the overall steering restriction device basically comprises: an outer tube 10, a shaft tube 20, and a bushing group And lining groups; where:

The outer tube 10 is connected to the handle of the bicycle, and the inner wall surface of the predetermined section of the outer tube 10 is provided with a plurality of first rotation defining portions 11; in practice, each of the first rotation defining portions 11 may be followed by The section of the outer tube 10 extending axially is also referred to in the fourth figure, and the cross section is planar.

The shaft tube 20 is oppositely disposed inside the outer tube 10 for connection with the bicycle front fork 70. The shaft tube 20 is disposed on the outer wall of the section of the outer tube 10 opposite to the outer tube 10, and the first plurality and the first The second rotation defining portion 21 corresponding to the rotation defining portion 11 is formed. In the implementation, each of the second rotation defining portions 21 may be a section extending along the axial direction of the shaft tube 20, and the cross section thereof is also formed in a planar shape.

The first lining 31 is provided between the corresponding first rotation defining portion 11 and the second rotation defining portion 21, and each first lining is respectively provided. The sheet 31 is provided with a plurality of rolling elements 32. Each of the first linings 31 can be provided with a plurality of groove portions 33 for accommodating the rolling members 32. The groove portions 33 are arranged in parallel up and down, and the rolling members 32 are rolled. a needle; and the lining set is provided with a plurality of second linings 41, each of the second linings 41 being respectively lined with a corresponding first rotation Between the defining portion 11 and the first lining 31.

Each of the first linings 31 is axially displaceable relative to the outer tube 10 and the shaft tube 20, and the first linings cooperate with the first rotation defining portion 11 and the second rotation defining portion 21, Restricting the outer tube 10 from rotating relative to the shaft tube 20, thereby achieving the purpose of being able to control the front fork by the handle of the bicycle; and, by the design of the lining set, reducing the axial displacement of each of the first linings The wear and tear caused by the external pipe.

Basically, the steering restriction device of the present invention is mainly designed to restrict the relative rotation of the outer tube 10 and the shaft tube 20 through the first rotation defining portion 11 and the second rotation defining portion 21 between the outer tube 10 and the shaft tube 20, The purpose of guiding the front fork by the handle of the bicycle is achieved; in particular, the steering restriction device of the present invention uses the first lining 31 to reduce the contact gap between the outer tube 10 and the shaft tube 20 (the first rotation defining portion 11 and the second rotation) The gap between the defining portions 21) results in a more stable and reliable steering restriction effect.

Furthermore, the steering restriction device of the present invention further has a guide post 50 for restricting the relative sliding stroke of the shaft tube 20 and the outer tube 10, and the guide post 50 and the shaft tube 20 are further disposed in the shaft tube 20. An elastic member 60 for elastically restoring the outer tube 10 and the shaft tube 20 is provided between the outer tube 10 and the shaft tube 20, and the overall steering restriction device is combined with the suspension effect in a relatively simple and reliable design.

In the embodiment, the outer tube 10 is provided with a fixing block 12 at an inner wall thereof above the shaft tube 20. The center of the fixing block 12 is provided with a screw hole 121 through which the top end of the guide post 50 passes. The shaft tube 20 is screwed to the screw hole 12 of the fixing block 12; a stopper block 22 is fixed to the top end of the shaft tube 20, and a hole 221 is defined in the center of the block block 22, and the block 22 is located at the center of the block tube 22. a position below the elastic member 60 and abutting against the elastic member 60; the guide post 50 passes through the stop block The bottom end of the hole 221 is provided with a blocking portion 51 having an outer diameter larger than the through hole 221 of the blocking block. The blocking block 22 and the blocking portion 51 of the guiding post are further provided with at least one spacer 52 for buffering the shaft. a stress generated by the displacement; the bottom end of the outer tube 10 is provided with an elastic dust jacket 80 correspondingly connected to the front fork 70 of the bicycle, and the top end of the elastic dust jacket 80 is provided with a cover 81 for screwing with the outer tube 10 The cover body 81 is fixedly disposed with a through hole 811 for the shaft tube 20 to pass through. The shaft tube 20 passes through the cover body through hole 811 and is screwed and fixed to the bicycle front fork 70.

According to the above structural design, when the shaft tube 20 and the outer tube 10 are relatively compressed, a cushioning and shock absorbing effect is formed, and a force for resetting the shaft tube 20 and the outer tube 10 is generated, and the force can be ensured. The shaft tube 20 is firmly engaged with the outer tube 10 to prevent the shaft tube 20 from being loosened from the outer tube 10.

Furthermore, the rolling member 32 is a needle roller, and the connecting portions 311 and 411 are further formed between the first lining 31 and the second lining 41, and are integrally formed as shown in the fifth figure to further increase the grouping device. Convenience; in addition, the rolling member 32 can also be a ball, as shown in the sixth figure.

In addition, in the above embodiments, the second linings 41 of the lining set may also be respectively disposed between the corresponding second rotation defining portions 21 and the first lining 31, as shown in the embodiment of the seventh embodiment. The wear of the shaft tube 20 caused by the axial displacement of each of the first linings 31 can be reduced; of course, as shown in the embodiment of the eighth embodiment, each of the second linings 41 can be simultaneously lined with the corresponding first rotation limit. Between the portion 11 and the first lining 31, and between the corresponding second rotation defining portion 21 and the first lining 31.

Compared with the conventional structure, the steering restriction device of the front fork of the bicycle can use the first lining to reduce the contact gap between the outer tube and the shaft tube, thereby obtaining a relatively stable and reliable steering effect and reducing the steering noise; When only the worn first lining or second lining is replaced, it can be effectively extended The service life of the steering limit device.

In particular, the steering restriction device of the present invention can easily combine the shock absorbing effect with a relatively simple and reliable design. Moreover, the design of surrounding the shaft tube by using the plurality of first linings is more advantageous for assembly and maintenance work of the steering restriction device.

In summary, the present invention provides a better feasible steering restriction device for bicycles, and submits a new patent application according to law; the technical content and technical features of the present invention have been disclosed as above, but those familiar with the technology may still be based on this The creation of the creation and the various changes and modifications that do not depart from the creative spirit of the case. Therefore, the scope of the present invention is not limited to the embodiments disclosed, but includes various alternatives and modifications that do not depart from the present invention and are covered by the following claims.

10‧‧‧External management

11‧‧‧First rotation limit

12‧‧‧Fixed blocks

121‧‧‧ screw holes

20‧‧‧ shaft tube

21‧‧‧Second rotation limit

22‧‧‧ block

221‧‧‧Perforation

31‧‧‧First lining

311‧‧‧Connecting Department

32‧‧‧Rolling parts

33‧‧‧Slots

41‧‧‧Second lining

411‧‧‧Connecting Department

50‧‧‧ Guide column

51‧‧‧stops

52‧‧‧shims

60‧‧‧Flexible components

70‧‧‧ front fork

80‧‧‧Flexible boot

81‧‧‧ cover

811‧‧‧Perforation

The first figure is the appearance structure diagram of the steering restriction device in this creation.

The second figure is an exploded view of the structure of the steering restriction device in the present creation.

The third figure is a structural sectional view of the steering restriction device in the present creation.

The fourth figure is a sectional structure diagram of the steering restriction device in the present creation.

The fifth figure is another structural exploded view of the steering restriction device in the present creation.

The sixth figure is another sectional structural view of the steering restriction device in the present creation.

The seventh drawing is a sectional structural view of another embodiment of the steering restricting device in the present creation.

The eighth figure is a cross-sectional structural view of still another embodiment of the steering restriction device in the present creation.

10‧‧‧External management

11‧‧‧First rotation limit

20‧‧‧ shaft tube

21‧‧‧Second rotation limit

31‧‧‧First lining

32‧‧‧Rolling parts

33‧‧‧Slots

41‧‧‧Second lining

50‧‧‧ Guide column

Claims (27)

A steering restriction device for a bicycle front fork includes: an outer tube for connecting with a handle of a bicycle, wherein a predetermined section of the inner wall of the outer tube is provided with a plurality of first rotation defining portions; and a shaft tube is relatively disposed The outer tube is connected to the front fork of the bicycle, and the outer wall of the section extending into the outer tube is provided with a plurality of second rotation defining portions corresponding to the respective first rotation defining portions; the bushing set is provided a plurality of first linings respectively disposed between the corresponding first rotation defining portion and the second rotation defining portion, wherein each of the first linings is provided with a plurality of rolling members; and the lining group is provided with plural The second lining is respectively disposed between the corresponding first rotation defining portion and the first lining. The steering restriction device of the bicycle front fork according to the first aspect of the invention, wherein the steering restriction device further has a guide post for restricting a relative sliding stroke of the shaft tube and the outer tube in the shaft tube, and An elastic member for elastically restoring the outer tube and the shaft tube is disposed between the guide post and the outer tube. The steering restriction device for a bicycle front fork according to the second aspect of the invention, wherein the outer tube is provided with a fixing block at an inner wall thereof above the shaft tube, and a screw hole is arranged in a center of the fixing block. The top end of the guide post passes through the shaft tube and is screwed with the screw hole; a stopper is fixed to the top end of the shaft tube, and a hole is formed at the center of the block, and the block is located under the elastic member Positioned and abutted against the elastic member; the guide post is provided with a stop portion having an outer diameter larger than the perforation of the stop block at a bottom end thereof through the through hole of the stop block. The steering restriction device for a bicycle front fork according to claim 3, wherein at least one spacer is further disposed between the stopping block and the stopping portion of the guiding post. The steering restriction device for a bicycle front fork according to any one of claims 1 to 4, wherein each of the first rotation defining portions of the outer tube has a planar shape, and each of the shaft tubes The cross section of the second rotation defining portion is planar. The steering restriction device for a bicycle front fork according to any one of claims 1 to 4, wherein each of the first linings is further provided with a plurality of groove portions for accommodating the rolling members. The steering restriction device for a bicycle front fork according to claim 6, wherein each of the groove portions is arranged in parallel up and down, and the rolling member is a needle roller. The steering restriction device for a bicycle front fork according to claim 6, wherein the rolling member is a ball. The steering restriction device for a bicycle front fork according to any one of claims 1 to 4, wherein the outer end of the outer tube is provided with an elastic dust jacket correspondingly connected to the front fork of the bicycle. The steering restriction device for a bicycle front fork according to claim 9 , wherein a top end of the elastic dust cover is provided with a cover body for screwing and fixing the outer tube, and the cover body is provided with a perforation for the The shaft tube is worn. The steering restriction device for a bicycle front fork according to claim 10, wherein the shaft tube is perforated through the cover body and screwed to the bicycle front fork. The steering restriction device for a bicycle front fork according to any one of claims 1 to 4, wherein each of the first linings is further formed with The connecting portion is formed integrally. The steering restriction device for a bicycle front fork according to any one of claims 1 to 4, wherein the second linings are further formed with a connecting portion to be integrally formed. A steering restriction device for a bicycle front fork includes: an outer tube for connecting with a handle of a bicycle, wherein a predetermined section of the inner wall of the outer tube is provided with a plurality of first rotation defining portions; and a shaft tube is relatively disposed The outer tube is connected to the front fork of the bicycle, and the outer wall of the section extending into the outer tube is provided with a plurality of second rotation defining portions corresponding to the respective first rotation defining portions; the bushing set is provided a plurality of first linings respectively disposed between the corresponding first rotation defining portion and the second rotation defining portion, wherein each of the first linings is provided with a plurality of rolling members; and the lining group is provided with plural The second lining is respectively disposed between the corresponding second rotation defining portion and the first lining. The steering restriction device for a bicycle front fork according to claim 14, wherein the steering restriction device further has a guide post for restricting a relative sliding stroke between the shaft tube and the outer tube, and An elastic member for elastically restoring the outer tube and the shaft tube is disposed between the guide post and the outer tube. The steering restriction device for a bicycle front fork according to claim 15, wherein the outer tube is provided with a fixing block at an inner wall thereof above the shaft tube, and a screw hole is arranged in a center of the fixing block. The top end of the guide post passes through the shaft tube and is screwed with the screw hole; a stopper is fixed to the top end of the shaft tube, and a hole is formed at the center of the block, and the block is located under the elastic member Positioned and abutted against the elastic member; the guide post is provided with a stop portion having an outer diameter larger than the perforation of the stop block at a bottom end thereof through the through hole of the stop block. The steering restriction device for a bicycle front fork according to claim 16, wherein at least one spacer is further disposed between the stopper and the stopper of the guide post. The steering restriction device for a bicycle front fork according to any one of claims 14 to 17, wherein each of the first rotation defining portions of the outer tube has a planar shape, and each of the shaft tubes The cross section of the second rotation defining portion is planar. The steering restriction device for a bicycle front fork according to any one of claims 14 to 17, wherein each of the first linings is further provided with a plurality of groove portions for accommodating the rolling members. The steering restriction device for a bicycle front fork according to claim 19, wherein each of the groove portions is arranged in parallel up and down, and the rolling member is a needle roller. The steering restriction device for a bicycle front fork according to claim 19, wherein the rolling member is a ball. The steering restriction device for a bicycle front fork according to any one of claims 14 to 17, wherein the outer end of the outer tube is provided with an elastic dust jacket correspondingly connected to the front fork of the bicycle. The steering restriction device for a bicycle front fork according to claim 22, wherein a top end of the elastic dust cover is provided with a cover body for screwing and fixing the outer tube, and the cover body is provided with a perforation for the The shaft tube is worn. The steering restriction device for a bicycle front fork according to claim 23, wherein the shaft tube is perforated through the cover body and screwed to the bicycle front fork. The steering restriction device for a bicycle front fork according to any one of claims 14 to 17, wherein the first linings are further formed with a connecting portion to be integrally formed. The steering restriction device for a bicycle front fork according to any one of claims 14 to 17, wherein the second linings are further formed with a connecting portion to be integrally formed. The steering restriction device for a bicycle front fork according to any one of claims 14 to 17, wherein the plurality of second linings of the lining set are respectively lining the corresponding first rotation defining portion and Between the first linings.