Locking mechanism for front fork of bicycle

Abstract

The utility model relates to the technical field of locking for front forks, in particular to a locking mechanism for a front fork for a bicycle, which comprises a support, a front fork assembly is slidably mounted at the lower end of the support, a first sleeve is fixed at the lower end of the support, an adjusting mechanism is arranged on the first sleeve, a screw rod piece and two L-shaped rods are arranged on the adjusting mechanism, and the two L-shaped rods are arranged on the screw rod piece. Two openings are formed in the first sleeve, the two L-shaped rods are slidably connected into the first sleeve in a sleeved mode, the upper ends of the two L-shaped rods are located in the two openings respectively, and pulling mechanisms are arranged on the two L-shaped rods. The distance between the support and the front fork assembly can be conveniently adjusted by a riding vehicle, adjustment can be conducted according to the requirements of the riding vehicle, meanwhile, the effect of converting external force can be achieved, and vibration is relieved and the vibration amplitude is reduced through friction force by means of the condition that the abutting piece and the end, located in the front fork assembly, of the support abut against and rub against each other.

Description

Technical Field

[0001] The utility model relates to the technical field of locking forks, in particular to a locking mechanism for a front fork of a bicycle. Background Art

[0002] The front fork component is located in the front part of the bicycle structure. Its upper end is connected to the handlebar component, the frame component cooperates with the front tube, and the lower end cooperates with the front axle component to form the bicycle's guide system. The front fork has a shock-absorbing function. When subjected to force during riding, the front fork is compressed. After reaching the extreme point, it rebounds to its original length (the rebound speed is affected by damping). This is repeated continuously to reduce the force on the rider's body, reduce bumps, and achieve comfort. The locked front fork does not have a shock-absorbing effect. At this time, if encountering bumps, the rider will move forward under the action of inertia, causing wrist injuries to the rider. At the same time, a large impact can easily damage the front fork and make it unusable.

[0003] The existing Chinese patent publication number is CN215436762U, which is a suspension front fork locking mechanism for bicycles. It includes a fork crown, a moving block is arranged on the top of the fork crown, and a passive block symmetrically distributed is fixedly installed on the bottom of the moving block. A slide groove is provided on the top of the fork crown, and a slider is slidably connected to the bottom of the slide groove. An elastic mechanism is arranged on the inner wall of the slide groove, and the elastic mechanism is assembled to slow down the displacement of the slider in the horizontal direction. The suspension front fork locking mechanism for bicycles provided by the utility model can reduce the impact caused by inertia, avoid the wrist injury of the rider, and avoid the front fork from being damaged and unable to be used. When the front fork is locked, if a large bump is encountered, the horizontal force generated by inertia is transmitted to the outer tube, and the stroke tube drives the fork crown to keep moving in the horizontal direction. At this time, the slider slides in the slide groove, and the impact force caused by the horizontal force is slowed down by the elastic mechanism, thereby protecting the rider's wrist and the front fork.

[0004] During riding, vibrations will cause the distance between the front fork and the bracket to change. Conventional technical solutions cannot effectively adjust the buffering force and cannot limit the telescopic distance, so improvements are needed. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a locking mechanism for a front fork of a bicycle.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The locking mechanism of a front fork of a bicycle comprises a bracket, the lower end of the bracket being slidably mounted with a front fork assembly, the lower end of the bracket being fixed with a first sleeve, the first sleeve being provided with an adjusting mechanism, the adjusting mechanism being provided with a screw member and two L-shaped rods, the first sleeve being provided with two openings, the two L-shaped rods being slidably sleeved in the first sleeve, respectively, the upper ends of the two L-shaped rods being located in the two openings, a pulling mechanism being provided on the two L-shaped rods, the pulling mechanism being provided with a second sleeve, the second sleeve being slidably sleeved with a sliding rod, the upper end of the sliding rod being fixed to the top in the first sleeve, the second sleeve being slidably sleeved with a third sleeve, the second sleeve and the third sleeve being jointly fixed with a first spring, the first spring being sleeved on the sliding rod, the lower end of the third sleeve being fixed with a plug plate, the upper end of the screw member being provided with a groove, the lower end of the plug plate being located in the groove, and the lower end of the screw member being rotatably connected to the middle portion of the upper end of the front fork assembly.

[0008] Compared with the prior art, the present application can facilitate the adjustment of the distance between the bracket and the front fork assembly of the bicycle, and can be adjusted according to the needs of the bicycle. At the same time, it can also play a role in converting external force, and through the friction between the resistance piece and one end of the bracket located in the front fork assembly, the friction force can be used to slow down the vibration and reduce the vibration amplitude.

[0009] Preferably, the adjustment mechanism includes a first nut rotatably sleeved in a first sleeve, the screw member is threadedly sleeved in the first nut, a connecting plate is rotatably sleeved on the first nut, the lower ends of the two L-shaped rods are respectively fixed on both sides of the upper end of the connecting plate, and a handle is fixed on the first nut.

[0010] Furthermore, it is convenient for the rider to make adjustments through the handlebars, so that the rider can make adjustments according to his or her own needs or riding conditions.

[0011] Preferably, the pulling mechanism includes a pull rope fixed on one side of the L-shaped rod, cross bars are fixed on both sides of the second sleeve, the two cross bars are respectively located in the two openings, and synchronous wheels are rotatably connected on the opposite side walls in the first sleeve. The pull rope is wound around the synchronous wheel, and one end of the pull rope is fixed on the cross bar.

[0012] Furthermore, the L-shaped rod pulls the pull rope to lower the crossbar, and the crossbar can lower the second sleeve. The lowering of the second sleeve can squeeze the first spring to perform buffering.

[0013] Preferably, a second spring is sleeved on the L-shaped rod, and two ends of the second spring are respectively fixed to the lower end of the first sleeve and the upper end of the connecting plate.

[0014] Furthermore, the second spring is used to better absorb and transform the external force.

[0015] Preferably, a second nut is threadedly engaged with the screw member, and the second nut is located at the lower end of the first nut.

[0016] Furthermore, the position of the components can be effectively fixed to fix the distance between the bracket and the front fork assembly.

[0017] Preferably, both sides of the lower end of the first sleeve are rotatably connected with oblique rods, and opposing side walls in the front fork assembly are slidably mounted with resistance members, the two resistance members respectively correspond to the two sides of the lower end of the bracket, and the lower ends of the two oblique rods are rotatably connected to the opposite sides of the two resistance members.

[0018] Furthermore, when the bracket moves toward the front fork assembly, the oblique rod can be used to push the abutment member to abut against one end of the bracket located in the front fork assembly, thereby reducing vibration through friction.

[0019] The beneficial effects of the utility model are:

[0020] 1. When the bracket moves toward the front fork assembly, the oblique rod can push the resistance member to contact one end of the bracket located in the front fork assembly, thereby reducing vibration through friction;

[0021] 2. The rider adjusts the distance between the bracket and the front fork assembly through the handlebar, so that the rider can adjust it according to his own needs or riding conditions. The L-shaped rod pulls the pull rope to lower the crossbar, and the crossbar can lower the second sleeve. The lowering of the second sleeve can squeeze the first spring to provide buffering. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 This is a cross-sectional view of the first sleeve of the utility model;

[0024] Figure 3 For the utility model Figure 2 A magnified image of point A;

[0025] Figure 4 For the utility model Figure 2 The enlarged view of point B;

[0026] In the figure: 1. oblique rod; 2. resistance; 3. bracket; 4. plug plate; 5. groove; 6. first sleeve; 7. cross bar; 8. opening; 9. pull rope; 10. L-shaped rod; 11. slide bar; 12. second sleeve; 13. first spring; 14. third sleeve; 15. first nut; 16. second spring; 17. connecting piece; 18. handle; 19. synchronous wheel; 20. second nut; 21. front fork assembly; 22. screw member. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Reference Figure 1-4 A locking mechanism for a front fork of a bicycle comprises a bracket 3, a front fork assembly 21 is slidably mounted on the lower end of the bracket 3, during actual production and preparation, corresponding assembly parts are installed between the bracket 3 and the front fork assembly 21, which can effectively absorb external force, reduce the vibration amplitude of the bracket 3 and the front fork assembly 21, ensure the stability of the rider's grip part, and protect the rider's wrist, a first sleeve 6 is fixed at the lower end of the bracket 3, an adjustment mechanism is arranged on the first sleeve 6, a screw member 22 and two L-shaped rods 10 are arranged on the adjustment mechanism, the adjustment mechanism comprises a first nut 15 rotatably sleeved in the first sleeve 6, the screw member 22 is threadedly sleeved in the first nut 15, a connecting piece 17 is rotatably sleeved on the first nut 15, the lower ends of the two L-shaped rods 10 are respectively fixed on both sides of the upper end of the connecting piece 17, a handle 18 is fixed on the first nut 15, the first nut 15 can be rotated by the handle 18, and the screw member 22 can be raised and lowered as the first nut 15 rotates, so as to adjust the distance between the bracket 3 and the front fork assembly 21.

[0029] Reference Figure 1-4 The first sleeve 6 is provided with two openings 8, and two L-shaped rods 10 are respectively slidably sleeved in the first sleeve 6. The upper ends of the two L-shaped rods 10 are respectively located in the two openings 8. The two L-shaped rods 10 are provided with a pulling mechanism, and the pulling mechanism is provided with a second sleeve 12. The pulling mechanism includes a pull rope 9 fixed on one side of the L-shaped rod 10. Cross bars 7 are fixed on both sides of the second sleeve 12. The two cross bars 7 are respectively located in the two openings 8. Synchronous wheels 19 are rotatably connected on the opposite side walls in the first sleeve 6. The pull rope 9 is wound around the synchronous wheel 19, and one end of the pull rope 9 is fixed on the cross bar 7. When pressure is applied to the first sleeve 6, the L-shaped rod 10 can be raised, and the L-shaped rod 10 pulls the pull rope 9 to lower the cross bar 7. The cross bar 7 can lower the second sleeve 12. The lowering of the second sleeve 12 can squeeze the first spring 13, which can perform buffering.

[0030] Reference Figure 1-4The second sleeve 12 is slidably sleeved with a slide rod 11, and the upper end of the slide rod 11 is fixed to the top of the first sleeve 6. The second sleeve 12 is slidably sleeved with a third sleeve 14. The second sleeve 12 and the third sleeve 14 are jointly fixed with a first spring 13, the first spring 13 is sleeved on the slide rod 11, and the lower end of the third sleeve 14 is fixed with a plug plate 4. The upper end of the screw member 22 is provided with a groove 5, and the lower end of the plug plate 4 is located in the groove 5. The lower end of the screw member 22 is rotatably connected to the middle part of the upper end of the front fork assembly 21. The second sleeve 12 can move stably under the action of the slide rod 11, and when the second sleeve 12 descends, it can squeeze the first spring 13, so that the first spring 13 applies pressure to the third sleeve 14, and through the cooperation of the plug plate 4 and the groove 5, the screw member 22 can be prevented from rotating at will.

[0031] Reference Figure 2-4 A second spring 16 is sleeved on the L-shaped rod 10, and two ends of the second spring 16 are respectively fixed to the lower end of the first sleeve 6 and the upper end of the connecting piece 17, which can cooperate with the first spring 13 to effectively perform buffering and shock absorption.

[0032] Reference Figure 1-2 A second nut 20 is threadedly engaged with the screw member 22 . The second nut 20 is located at the lower end of the first nut 15 . The position of the screw member 22 can be limited by the action of the second nut 20 .

[0033] Reference Figure 1 The lower end of the first sleeve 6 is rotatably connected with oblique rods 1 on both sides, and the opposite side walls in the front fork assembly 21 are slidably installed with resistance members 2. The two resistance members 2 correspond to the lower end of the bracket 3 on both sides respectively. The lower ends of the two oblique rods 1 are rotatably connected to the opposite sides of the two resistance members 2. When the first sleeve 6 moves toward the front fork assembly 21, the oblique rod 1 can push the resistance member 2 toward one end of the bracket 3 located in the front fork assembly 21 to resist, thereby slowing down the vibration through friction and reducing the vibration amplitude.

[0034] In the utility model, the first nut 15 can be rotated by the handle 18. The rotation of the first nut 15 facilitates the adjustment of the height of the screw member 22, and the distance between the bracket 3 and the front fork assembly 21 can be adjusted. When riding, when the distance between the bracket 3 and the front fork assembly 21 changes, the bracket 3 is pressed down to cause the first sleeve 6 to squeeze the second spring 16, and the relative position relationship between the L-shaped rod 10 and the first sleeve 6 will change. The L-shaped rod 10 can pull the pull rope 9 to lower the cross bar 7. When the cross bar 7 is lowered, the second sleeve 12 and the third sleeve 14 can move relative to each other, further squeezing the first spring 13, and can cooperate with the bracket 3 and the damping component in the front fork assembly 21 to improve stability. Moreover, the descent of the first sleeve 6 can push the resistance member 2 to contact one end of the bracket 3 located in the front fork assembly 21 through the oblique rod 1, and the vibration is slowed down by friction to reduce the vibration amplitude.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A locking mechanism for a bicycle front fork, comprising a bracket (3), characterized in that: A front fork assembly (21) is slidably mounted on the lower end of the bracket (3); a first sleeve (6) is fixed to the lower end of the bracket (3); an adjustment mechanism is provided on the first sleeve (6); a screw member (22) and two L-shaped rods (10) are provided on the adjustment mechanism; two openings (8) are provided on the first sleeve (6); the two L-shaped rods (10) are respectively slidably sleeved in the first sleeve (6); the upper ends of the two L-shaped rods (10) are respectively located in the two openings (8); a pulling mechanism is provided on the two L-shaped rods (10); a second sleeve (12) is provided on the pulling mechanism; a screw member (22) and two L-shaped rods (10) are slidably sleeved in the first sleeve (6); the upper ends of the two L-shaped rods (10) are respectively located in the two openings (8); a pulling mechanism is provided on the two L-shaped rods (10); a second sleeve (12) is slidably sleeved in the second sleeve (12); A slide rod (11) is sleeved, the upper end of the slide rod (11) is fixed to the top of the first sleeve (6), the second sleeve (12) is slidably sleeved with a third sleeve (14), the second sleeve (12) and the third sleeve (14) are commonly fixed with a first spring (13), the first spring (13) is sleeved on the slide rod (11), the lower end of the third sleeve (14) is fixed with an insert plate (4), the upper end of the screw member (22) is provided with a groove (5), the lower end of the insert plate (4) is located in the groove (5), and the lower end of the screw member (22) is rotatably connected to the middle part of the upper end of the front fork assembly (21).

2. A locking mechanism for a bicycle front fork according to claim 1, characterized in that: The adjustment mechanism comprises a first nut (15) rotatably sleeved in a first sleeve (6), the screw member (22) being threadably sleeved in the first nut (15), a connecting plate (17) being rotatably sleeved on the first nut (15), the lower ends of the two L-shaped rods (10) being respectively fixed to both sides of the upper end of the connecting plate (17), and a handle (18) being fixed on the first nut (15).

3. A locking mechanism for a bicycle front fork according to claim 2, characterized in that: The pulling mechanism comprises a pull rope (9) fixed to one side of the L-shaped rod (10); cross bars (7) are fixed to both sides of the second sleeve (12); the two cross bars (7) are respectively located in the two openings (8); synchronous wheels (19) are rotatably connected to the opposite side walls in the first sleeve (6); the pull rope (9) is wound around the synchronous wheel (19); and one end of the pull rope (9) is fixed to the cross bar (7).

4. A locking mechanism for a bicycle front fork according to claim 3, characterized in that: A second spring (16) is sleeved on the L-shaped rod (10), and two ends of the second spring (16) are respectively fixed to the lower end of the first sleeve (6) and the upper end of the connecting plate (17).

5. A locking mechanism for a bicycle front fork according to claim 4, characterized in that: A second nut (20) is threaded onto the screw member (22), and the second nut (20) is located at the lower end of the first nut (15).

6. A locking mechanism for a bicycle front fork according to claim 5, characterized in that: Both sides of the lower end of the first sleeve (6) are rotatably connected to inclined rods (1), and opposing side walls in the front fork assembly (21) are slidably mounted with abutments (2), the two abutments (2) respectively corresponding to both sides of the lower end of the bracket (3), and the lower ends of the two inclined rods (1) are respectively rotatably connected to opposite sides of the two abutments (2).

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