Anti-bottoming bicycle suspension fork

Abstract

This utility model relates to the field of bicycle front fork technology and discloses an anti-bottoming bicycle suspension front fork, including a top tube. A fork shoulder is fixedly connected to the bottom of the top tube. Travel tubes are fixedly connected to the left and right sides of the fork shoulder. Rings are slidably connected to the bottom outer walls of both travel tubes. Fork holders are fixedly connected to the bottom of both rings. Hollow cylinders are fixedly connected to the opposite sides of both fork holders. Grooves are formed on the opposite sides of both fork holders. Hydraulic actuators are fixedly connected to the inner bottom of both hollow cylinders. A cross plate is fixedly connected to the other end of each hydraulic actuator. In this utility model, the damping force generated by the hydraulic actuators at the bottom of the hollow cylinders pressing down on the travel tubes during bumps, along with the rings assisting in the stable sliding of the travel tubes, effectively slows down the downward speed of the travel tubes when encountering impacts, preventing the fork from instantly bottoming out.

Description

Technical Field

[0001] This utility model relates to the field of bicycle front fork technology, and in particular to a bottom-diving bicycle shock-absorbing front fork. Background Technology

[0002] As one of the key components of a bicycle, the suspension fork is installed between the front wheel and the frame. Its main function is to cushion the bumps and impacts transmitted from the road during riding. It can effectively absorb vibrations, greatly improve riding comfort, reduce fatigue caused by vibrations to the rider's body, and protect the bicycle frame and wheels, reducing the risk of component damage due to severe impacts and extending the overall lifespan of the bicycle.

[0003] Anti-bottoming bicycle suspension forks are a special design optimized from traditional suspension forks. They are specifically designed to address the bottoming-out problem that can occur when suspension forks are over-compressed during riding. When encountering a large impact, ordinary suspension forks are prone to compressing to their limit, causing internal fork collisions or the front wheel to lose cushioning support momentarily, affecting handling stability. Anti-bottoming bicycle suspension forks, through special structural design or damping adjustment mechanisms, can provide additional resistance when approaching the bottoming-out threshold, preventing the fork from over-compressing, ensuring a smooth and safe ride, and giving riders more confidence in handling complex road conditions.

[0004] Currently, anti-bottoming bicycle suspension forks prevent bottoming out by adding damping adjustment. However, the damping adjustment range is relatively narrow, making it difficult to adapt to the needs of different rider weights, riding styles, and varying road conditions. Existing technology uses multi-level variable damping adjustment devices, where riders can manually rotate the adjustment ring to switch between different damping levels according to their own needs. Although multi-level variable damping adjustment devices have preset levels corresponding to different road conditions and riding styles, actual riding scenarios are complex and varied. When road conditions suddenly change and timely adjustments are needed, it is difficult for riders to concentrate on operating the adjustment ring. In fact, misoperation may lead to instability and affect riding safety. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an anti-bottoming bicycle suspension fork, which aims to improve the problem in the prior art where it is difficult for riders to concentrate on operating the adjustment ring when road conditions suddenly change and timely adjustments are needed, thus affecting riding safety.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a bottom-dip bicycle shock-absorbing fork, comprising an upper tube, a fork shoulder fixedly connected to the bottom of the upper tube, stroke tubes fixedly connected to the left and right sides of the fork shoulder, a ring slidably connected to the bottom outer wall of each of the two stroke tubes, a fork barrel fixedly connected to the bottom of each of the two rings, a hollow cylinder fixedly connected to the opposite side of each of the two fork barrels, a groove provided on the opposite side of each of the two fork barrels, a hydraulic actuator fixedly connected to the inner bottom of each of the two hollow cylinders, a cross plate fixedly connected to the other end of each of the two hydraulic actuators, an adjacent end of each of the two cross plates passing through the groove and fixedly connected to the bottom of the stroke tube, and an adjustment mechanism provided at the bottom of each of the two fork barrels, the adjustment mechanism being used to fix the rotating rod.

[0007] As a further description of the above technical solution:

[0008] The adjustment mechanism includes two connecting blocks. The tops of the two connecting blocks are fixedly connected to the bottom of the corresponding fork buckets. A fixing block is fixedly connected to the rear bottom of each of the two connecting blocks. A sliding groove is provided on the front bottom of each of the two connecting blocks. A sliding block is slidably connected to the inner side of each of the two sliding grooves. A corresponding arc-shaped plate is fixedly connected to the bottom of each of the two sliding blocks and the fixing block. Bolts are rotatably connected to the front of each of the two connecting blocks.

[0009] As a further description of the above technical solution:

[0010] Both fork buckets are fixedly connected to the front side of a mounting plate, and both mounting plates are fixedly connected to the front side of a reflective strip.

[0011] As a further description of the above technical solution:

[0012] Both of the rings are fixedly connected to the same fork bridge on their front sides, and the fork bridge has a smooth design.

[0013] As a further description of the above technical solution:

[0014] Both of the stroke tubes are rotatably connected to a top cover, and both top covers are fixedly connected to a knob.

[0015] As a further description of the above technical solution:

[0016] The two sliding grooves are provided with grooves on the left and right sides inside, and the two sliding blocks are fixedly connected to sliders on the left and right sides. The sliders are slidably connected to the interior of the corresponding grooves.

[0017] As a further description of the above technical solution:

[0018] A mounting bracket is fixedly connected to the left side of the fork bucket on the right side, and multiple reserved holes are equidistantly opened on the left side of the mounting bracket.

[0019] As a further description of the above technical solution:

[0020] Both bolts have slidably connected washers on their outer walls, and the rear sides of both washers are in contact with the front sides of the corresponding connecting blocks.

[0021] Through the above technical solution:

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the damping force generated by the hydraulic device at the bottom of the hollow cylinder pressing down on the stroke tube during bumps, and the ring assisting the stroke tube to slide stably, effectively slow down the downward speed of the stroke tube when encountering an impact, preventing the fork from hitting the bottom instantly, and providing a cushioning function for riding. This allows riders to easily control the bicycle in different road conditions with this shock-absorbing fork, ensuring a smooth and safe ride.

[0024] 2. In this utility model, when it is necessary to adjust the shock absorber fork shaft, by rotating the bolt on the front side of the connecting block, and using the fixed block as a reference, the sliding block slidably connected in the sliding groove slides back and forth with the rotation of the bolt, thereby causing the arc-shaped plate connected to it to produce relative displacement, thus changing the distance between the two arc-shaped plates, thereby completing the adjustment operation of the shock absorber fork shaft. Attached Figure Description

[0025] Figure 1 This is a perspective view of the anti-bottoming bicycle shock-absorbing front fork proposed in this utility model;

[0026] Figure 2 This is a rear view of the structure of the anti-bottoming bicycle shock-absorbing fork proposed in this utility model;

[0027] Figure 3 This is a structural exploded view of the anti-bottoming bicycle shock-absorbing front fork proposed in this utility model;

[0028] Figure 4 This is an exploded view of the fork barrel structure of the anti-bottoming bicycle shock-absorbing fork proposed in this utility model;

[0029] Figure 5 This is a structurally exploded view of the adjustment mechanism of the anti-bottoming bicycle shock-absorbing fork proposed in this utility model.

[0030] Legend:

[0031] 1. Upper tube; 2. Adjustment mechanism; 201. Connecting block; 202. Fixing block; 203. Sliding groove; 204. Sliding block; 205. Arc plate; 206. Bolt; 3. Fork shoulder; 4. Stroke tube; 5. Ring; 6. Fork bucket; 7. Hollow cylinder; 8. Hydraulic unit; 9. Groove; 10. Cross plate; 11. Mounting plate; 12. Reflective strip; 13. Fork bridge; 14. Top cover; 15. Knob; 16. Sliding groove; 17. Sliding block; 18. Mounting bracket; 19. Reserved hole; 20. Gasket. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a shock-absorbing bicycle fork that prevents bottoming out. It includes an upper tube 1, which transmits various forces from the frame. A fork shoulder 3 is fixedly connected to the bottom of the upper tube 1, providing stable support. Travel tubes 4 are fixedly connected to the left and right sides of the fork shoulder 3, allowing for flexible up-and-down movement within a certain range to achieve shock absorption. Rings 5 ​​are slidably connected to the bottom outer walls of both travel tubes 4, assisting in the stable sliding of the travel tubes 4. Fork holders 6 are fixedly connected to the bottom of both rings 5, providing cushioning and protection against impacts from the wheel during shock absorption. Hollow cylinders 7 are fixedly connected to the opposite sides of the two fork holders 6, providing installation space for internal hydraulic actuators 8. Grooves 9 are provided on the opposite sides of the two fork holders 6, guiding the movement of the crossbar 10. The inner bottom of the two hollow cylinders 7 are fixed... The bicycle is connected to a hydraulic actuator 8, which prevents the fork from bottoming out instantly through the damping effect of the internal hydraulic oil. The other end of each of the two hydraulic actuators 8 is fixedly connected to a cross plate 10, which is linked to the stroke tube 4 to transfer the damping force of the hydraulic actuator 8 to the stroke tube 4, thereby achieving shock absorption. The adjacent ends of the two cross plates 10 pass through the groove 9 and are fixedly connected to the bottom of the stroke tube 4 to ensure that the cross plates 10 and the stroke tube 4 fit tightly and make the shock absorption action coordinated. The bottom of each of the two fork pods 6 is provided with an adjustment mechanism 2, which is used to fix the rotating rod and can flexibly adjust the position of the rotating rod according to actual needs. The left side of the right fork pod 6 is fixedly connected to a mounting bracket 18, which provides a convenient platform for installing other accessories and expands the bicycle's functionality. The left side of the mounting bracket 18 has multiple reserved holes 19 at equal intervals, which allow users to choose the appropriate position to install accessories according to their own needs and meet diverse riding requirements.

[0034] Specifically, when using a bottom-out suspension fork, when encountering bumpy road conditions, the wheel is impacted and the force is transmitted upwards. At this time, the fork cassette 6 and the hollow cylinder 7 connected to it will shift with the undulation of the wheel. The hydraulic unit 8 located at the bottom of the inner side of the hollow cylinder 7 begins to play a core shock absorption role. When the impact causes the travel tube 4 to press down, the cross plate 10 will move down with the bottom of the travel tube 4. The hydraulic oil inside the hydraulic unit 8 is squeezed, and the hydraulic oil will generate a damping force. This damping force can effectively slow down the downward speed of the travel tube 4 and prevent the fork from hitting the bottom instantly, thus providing a cushion for riding. The ring 5 plays a role in assisting the travel tube 4 to slide stably, allowing the rider to easily control the bicycle under different road conditions. The mounting bracket 18 on the left side of the right fork cassette 6 and the multiple reserved holes 19 on it provide convenience for installing other accessories.

[0035] Reference Figure 2 and Figure 5The adjusting mechanism 2 includes two connecting blocks 201, which serve as the basic support components of the adjusting mechanism 2. The tops of the two connecting blocks 201 are fixedly connected to the bottoms of the corresponding fork buckets 6. A fixing block 202 is fixedly connected to the rear bottom of each of the two connecting blocks 201, and the fixing block 202 remains in a fixed position. A sliding groove 203 is provided on the front bottom of each of the two connecting blocks 201. The sliding groove 203 provides a dedicated moving track for the sliding block 204, limiting its sliding direction. A sliding block 204 is slidably connected to the inner side of each of the two sliding grooves 203, allowing the sliding block 204 to move within the sliding groove 203. 03 Smooth sliding within, the bottom of the two sliding blocks 204 and the fixed block 202 are respectively fixedly connected to corresponding arc plates 205. The arc plates 205 change the spacing as the sliding blocks 204 move. The front sides of the two connecting blocks 201 are rotatably connected to bolts 206. The bolts 206 serve as the adjustment control components. The rider can easily start the adjustment process by turning them, making operation convenient. The outer walls of the two bolts 206 are slidably connected to washers 20. The washers 20 fit tightly against the front side of the connecting blocks 201. When the bolts 206 are tightened, the contact area with the connecting blocks 201 is increased, and the pressure is evenly distributed.

[0036] Specifically, when the shock absorber fork pivot needs adjustment, the fixing block 202 located at the bottom rear of the connecting block 201 and the sliding block 204 slidably connected to the front of the connecting block 201 in the sliding groove 203 play a key role. When the user rotates the bolt 206 on the front of the connecting block 201, the arc plate 205 connected to the sliding block 204 will have relative displacement due to the fixed position of the fixing block 202. The rotation of the bolt 206 causes the sliding block 204 to slide back and forth in the sliding groove 203, thereby changing the distance between the two arc plates 205. When the bolt 206 is tightened, the rear side of the washer 20 fits tightly against the front side of the connecting block 201, increasing the contact area between the bolt 206 and the connecting block 201 and dispersing the pressure.

[0037] Reference Figure 1 , Figure 3 and Figure 4Mounting plates 11 are fixedly connected to the front sides of both fork barrels 6. These mounting plates 11 provide a reliable attachment surface for subsequent components. Reflective strips 12 are fixedly connected to the front sides of both mounting plates 11. In low-light conditions, the reflective strips 12 reflect incoming light back, greatly improving the visibility of the bicycle at night or in low-light conditions. The same fork bridge 13 is fixedly connected to the front sides of both rings 5. The fork bridge 13 connects the two rings 5, strengthening the structural connection between them and significantly improving the lateral stability of the entire fork. The fork bridge 13 features a smooth design, and its rounded shape prevents scratches. The top of each of the two stroke tubes 4 is rotatably connected to a top cover 14, which effectively prevents dust, rainwater and other impurities from entering. The top of each of the two top covers 14 is fixedly connected to a knob 15. The knob 15 allows the rider to easily adjust the relevant components inside the stroke tube 4 by rotating it. The left and right sides of the interior of each of the two sliding grooves 203 are provided with a sliding groove 16. The sliding groove 16 plans the sliding path for the matching slider 17. The left and right sides of each of the two sliding blocks 204 are fixedly connected to sliders 17. The sliders 17 cooperate with the sliding grooves 16, and slide smoothly without obstruction during the sliding process, making the movement of the sliding block 204 more precise.

[0038] Specifically, the reflective strip 12 can reflect ambient light at night or in low-light conditions, greatly improving the visibility of the bicycle, enhancing the structural stability between the two fork tubes 6, making the overall force distribution of the shock-absorbing fork more even, and reducing component displacement deviation caused by bumps. The knob 15 is convenient for the rider to operate manually. By rotating the knob 15, the internal pressure of the stroke tube 4 can be adjusted, ensuring that the sliding block 204 moves smoothly and does not deviate during the adjustment of the arc plate 205 spacing.

[0039] Working principle: When using the anti-bottoming bicycle suspension fork, when encountering bumpy road conditions, the wheel is impacted and the force is transmitted upward. At this time, the fork thimble 6 and the hollow cylinder 7 connected to it will move and change with the undulation of the wheel. The hydraulic unit 8 located at the bottom of the inner side of the hollow cylinder 7 begins to play the core shock absorption role. When the impact causes the travel tube 4 to press down, the cross plate 10 will move down with the bottom of the travel tube 4. The hydraulic oil inside the hydraulic unit 8 is squeezed and the hydraulic oil will generate a damping force. This damping force can effectively slow down the downward speed of the travel tube 4 and prevent the fork from hitting the bottom instantly, thus providing a cushion for riding. The ring 5 plays a role in assisting the travel tube 4 to slide stably, allowing the rider to easily control the bicycle in different road conditions.

[0040] Furthermore, when it is necessary to adjust the shock absorber fork pivot, the fixing block 202 located at the bottom rear of the connecting block 201 and the sliding block 204 slidably connected in the sliding groove 203 on the front side play a key role. When the user rotates the bolt 206 on the front side of the connecting block 201, as the bolt 206 rotates, the arc plate 205 connected to the sliding block 204 will have relative displacement due to the fixed position of the fixing block 202. The rotation of the bolt 206 causes the sliding block 204 to slide back and forth in the sliding groove 203, thereby changing the distance between the two arc plates 205.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Anti-bump bicycle fork, comprising an upper tube (1), characterized in that: The bottom of the upper tube (1) is fixedly connected to a fork shoulder (3), and the left and right sides of the fork shoulder (3) are fixedly connected to stroke tubes (4). The bottom outer walls of the two stroke tubes (4) are slidably connected to rings (5). The bottom of the two rings (5) is fixedly connected to fork barrels (6). The opposite sides of the two fork barrels (6) are fixedly connected to hollow cylinders (7). The opposite sides of the two fork barrels (6) are provided with grooves (9). The bottom inner sides of the two hollow cylinders (7) are fixedly connected to hydraulic devices (8). The other end of the two hydraulic devices (8) is fixedly connected to a horizontal plate (10). The adjacent ends of the two horizontal plates (10) pass through the grooves (9) and are fixedly connected to the bottom of the stroke tubes (4). The bottom of the two fork barrels (6) is provided with an adjustment mechanism (2). The adjustment mechanism (2) is used to fix rotating rods of different sizes.

2. Anti-bottoming bicycle suspension front fork according to claim 1, characterized in that: The adjustment mechanism (2) includes two connecting blocks (201). The tops of the two connecting blocks (201) are fixedly connected to the bottom of the corresponding fork bucket (6). The bottom rear side of the two connecting blocks (201) is fixedly connected to a fixing block (202). The bottom front side of the two connecting blocks (201) is provided with a sliding groove (203). The inner side of the two sliding grooves (203) is slidably connected to a sliding block (204). The bottom of the two sliding blocks (204) and the fixing block (202) are respectively fixedly connected to corresponding arc plates (205). The front side of the two connecting blocks (201) is rotatably connected to a bolt (206).

3. The anti-bottoming bicycle suspension fork of claim 1, wherein: Mounting plates (11) are fixedly connected to the front sides of both fork buckets (6), and reflective strips (12) are fixedly connected to the front sides of both mounting plates (11).

4. The anti-bottoming bicycle suspension fork of claim 1, wherein: Both of the two rings (5) are fixedly connected to the same fork bridge (13) on their front sides, and the fork bridge (13) adopts a smooth design.

5. The anti-bottoming bicycle suspension fork of claim 1, wherein: The top of each of the two travel tubes (4) is rotatably connected to a top cover (14), and the top of each of the two top covers (14) is fixedly connected to a knob (15).

6. The anti-bottoming bicycle suspension fork of claim 2, wherein: The two sliding grooves (203) are provided with sliding grooves (16) on the left and right sides, and the two sliding blocks (204) are fixedly connected with sliders (17) on the left and right sides, and the multiple sliders (17) are slidably connected to the interior of the corresponding sliding grooves (16).

7. The anti-bottoming bicycle suspension fork of claim 1, wherein: A mounting bracket (18) is fixedly connected to the left side of the fork bucket (6) on the right side, and multiple reserved holes (19) are equidistantly opened on the left side of the mounting bracket (18).

8. The anti-bottoming bicycle suspension fork of claim 2, wherein: Both bolts (206) have slidably connected washers (20) on their outer walls, and the rear sides of both washers (20) are in contact with the front side of the corresponding connecting block (201).

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