A quick release mechanism for a flower drum

Abstract

The utility model discloses a kind of flower drum quick-release mechanisms, it includes left fork leg, right fork leg, flower drum, axle rod, mandrel, handle and end cap, flower drum is located between left fork leg and right fork leg, axle rod sequentially passes through left fork leg, flower drum and right fork leg, end cap is located at the right end of axle rod, the end of handle is equipped with eccentric wheel, shaft hole is opened in eccentric wheel, the side of eccentric wheel is equipped with the avoidance slot that is communicated in shaft hole, mandrel is worn in shaft hole, the side of mandrel is equipped with first screw hole, the left end of axle rod passes through avoidance slot and is screwed in first screw hole, when handle is pressed to left fork leg direction, eccentric wheel drives mandrel to tighten axle rod, locking mechanism is arranged between mandrel and eccentric wheel, locking mechanism is used to lock the relative position of mandrel and eccentric wheel. The utility model can effectively prevent front wheel from loosening under the locking effect of locking mechanism, and reliably lock handle, and higher safety.

Description

Technical Field

[0001] This utility model relates to bicycles, and more particularly to a hub quick-release mechanism. Background Technology

[0002] In existing technology, some bicycles are equipped with quick-release mechanisms to facilitate hub assembly and disassembly. Traditional bicycle quick-release mechanisms include the hub, quick-release lever assembly, threaded axle, and locking nuts. The core principle of the quick-release mechanism is generally a cam locking mechanism. The base of the quick-release lever is designed with an eccentric cam structure. When the lever is moved from the open position (90° to the axle) to the closed position (parallel to the axle), the cam pushes the lever seat, shortening the distance between the nuts at both ends of the quick-release axle and the frame dropouts. This generates a strong pulling force to lock the hub onto the fork. The preload adjustment steps are: first, rotate the quick-release nut to adjust the tightness until resistance is felt when the lever is closed to 45°; then, forcefully move it to the parallel position, utilizing the elastic deformation of the axle to obtain a stable locking force. Generally, when installing the front hub, a groove is cut at the bottom of the dropout to allow the hub to be inserted into the top of the grooved dropout for fixation. Then, the quick-release ends of the hub are used to lock the fork dropouts and hub mounting ports. This installation and configuration makes it easy to remove the front wheel. However, during riding, the quick-release lever of the quick-release lock protrudes from the outside of the front fork dropper. When encountering steep slopes, bumpy roads, or rocky mountain roads, the quick-release lever may hit road obstacles. After multiple collisions, the quick-release lever may loosen, causing the tire to come out of the slot of the front fork dropper, resulting in a dangerous fall for the rider. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a hub quick-release mechanism that can prevent the front wheel from coming loose, reliably lock the handle, and is safer, in order to address the shortcomings of the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0005] A hub quick-release mechanism includes a left front fork, a right front fork, a hub, a shaft, a spindle, a handle, and an end cap. The hub is located between the left and right front forks. The shaft passes through the left front fork, the hub, and the right front fork in sequence. The end cap is located at the right end of the shaft. An eccentric wheel is provided at the end of the handle. The eccentric wheel has a shaft hole. The side of the eccentric wheel has a clearance groove communicating with the shaft hole. The spindle passes through the shaft hole. The side of the spindle has a first screw hole. The left end of the shaft passes through the clearance groove and is screwed into the first screw hole. When the handle is pressed towards the left front fork, the eccentric wheel drives the spindle to tighten the shaft. A locking mechanism is provided between the spindle and the eccentric wheel. The locking mechanism is used to lock the relative position of the spindle and the eccentric wheel.

[0006] Preferably, the locking mechanism includes a locking slider and a spring. A radial groove is provided at the end of the spindle, the locking slider is slidably disposed in the radial groove, the spring elastically abuts against the end of the locking slider and the radial groove, and a locking hole is provided on the inner wall of the shaft hole, the end of the locking slider away from the spring is inserted into the locking hole.

[0007] Preferably, the locking slider includes an outwardly protruding toggle portion.

[0008] Preferably, the clearance slot is an arc-shaped slot extending circumferentially along the eccentric wheel.

[0009] Preferably, it includes a washer through which the shaft passes, and the washer includes a concave arc surface that abuts against the eccentric wheel.

[0010] Preferably, the end cap includes a second threaded hole, and the right end of the shaft is screwed into the second threaded hole.

[0011] Preferably, the locking slider includes a first abutment post, and the end of the radial groove is provided with a second abutment post, with the two ends of the spring respectively sleeved on the first abutment post and the second abutment post.

[0012] In the hub quick-release mechanism disclosed in this utility model, the handle, spindle, and end cap work together to fix the axle. When the user assembles the front wheel, the hub can be placed between the left and right front fork legs, the locking mechanism can be unlocked, and the handle can be pressed towards the left front fork leg. The eccentric wheel drives the spindle to tighten the axle, and then the locking mechanism locks the handle. When the user needs to remove the front wheel, the locking mechanism is unlocked first, and then the handle is pulled outward to release the tension on the axle. Then the spindle and end cap can be further removed. Compared with the prior art, this utility model can effectively prevent the front wheel from coming loose under the locking action of the locking mechanism, and at the same time reliably lock the handle, making it safer. Attached Figure Description

[0013] Figure 1 This is a perspective view of the quick-release mechanism for the hub of this utility model;

[0014] Figure 2 This is an exploded view of the quick-release mechanism for the hub of this utility model;

[0015] Figure 3 Partial cross-sectional view of the quick-release mechanism of the hub of this utility model Figure 1 ;

[0016] Figure 4 Partial cross-sectional view of the quick-release mechanism of the hub of this utility model Figure 2 ;

[0017] Figure 5 This is a partial exploded view of the quick-release mechanism for the hub of this utility model. Detailed Implementation

[0018] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.

[0019] This utility model discloses a quick-release mechanism for a hub, combined with... Figures 1 to 5 As shown, it includes a left front fork leg 1, a right front fork leg 2, a hub 3, a shaft 4, a spindle 5, a handle 6, and an end cap 7. The hub 3 is located between the left front fork leg 1 and the right front fork leg 2. The shaft 4 passes through the left front fork leg 1, the hub 3, and the right front fork leg 2 in sequence. The end cap 7 is located at the right end of the shaft 4. The end of the handle 6 is provided with an eccentric wheel 60. The eccentric wheel 60 has a shaft hole 61. The side of the eccentric wheel 60 has a clearance slot 62 that communicates with the shaft hole 61. The spindle 5 passes through the shaft hole 61. The side of the spindle 5 has a first screw hole 50. The left end of the shaft 4 passes through the clearance slot 62 and is screwed into the first screw hole 50. When the handle 6 is pressed towards the left front fork leg 1, the eccentric wheel 60 drives the spindle 5 to tighten the shaft 4. A locking mechanism 8 is provided between the spindle 5 and the eccentric wheel 60. The locking mechanism 8 is used to lock the relative position of the spindle 5 and the eccentric wheel 60.

[0020] In the above structure, the handle 6, spindle 5, and end cap 7 work together to fix the axle 4. When the user assembles the front wheel, the hub 3 can be placed between the left front fork leg 1 and the right front fork leg 2, the locking mechanism 8 can be unlocked, and the handle 6 can be pressed towards the left front fork leg 1. The eccentric wheel 60 drives the spindle 5 to tighten the axle 4, and then the locking mechanism 8 locks the handle 6. When the user needs to remove the front wheel, the locking mechanism 8 is unlocked first, and then the handle 6 is pulled outward to release the tension on the axle 4. Then the spindle 5 and end cap 7 can be further removed. Compared with the prior art, this utility model can effectively prevent the front wheel from loosening under the locking action of the locking mechanism 8, and at the same time reliably lock the handle, making it safer.

[0021] Regarding the preferred structure of locking mechanism 8, combined with Figures 2 to 5 As shown, the locking mechanism 8 includes a locking slider 80 and a spring 81. A radial groove 51 is provided at the end of the spindle 5. The locking slider 80 is slidably disposed in the radial groove 51. The spring 81 elastically abuts against the end of the locking slider 80 and the radial groove 51. A locking hole 63 is provided on the inner wall of the shaft hole 61. The end of the locking slider 80 away from the spring 81 is inserted into the locking hole 63.

[0022] In the above structure, the radial groove 51 is preferably a groove with a T-shaped cross section, and the locking slider 80 is preferably a slider with a T-shaped cross section. The locking slider 80 is slidably disposed in the radial groove 51. Due to the T-shaped structure limitation, the locking slider 80 can only slide along the radial groove 51. When the handle 6 is rotated until the locking hole 63 is aligned with the locking slider 80, under the elastic force applied by the spring 81, one end of the locking slider 80 is driven to be inserted into the locking hole 63, thereby achieving the locking effect.

[0023] To facilitate manual operation, in this embodiment, the locking slider 80 includes an outwardly protruding toggle part 82.

[0024] As a preferred embodiment, the clearance slot 62 is an arc-shaped slot extending circumferentially along the eccentric wheel 60. Since the shaft 4 passes through the clearance slot 62, and the clearance slot 62 extends in an arc shape, when the user rotates the handle 6, the shaft 4 can slide along the clearance slot 62, avoiding positional interference between them.

[0025] To facilitate the user's rotation of the handle 6, this embodiment includes a washer 9, through which the shaft 4 passes. The washer 9 includes an inwardly concave arc surface 90 that abuts against the eccentric wheel 60.

[0026] In this embodiment, the end cap 7 is a nut. Specifically, the end cap 7 includes a second screw hole 70, and the right end of the shaft 4 is screwed into the second screw hole 70.

[0027] To reliably install the spring 81, in this embodiment, the locking slider 80 includes a first abutment post 83, and the end of the radial groove 51 is provided with a second abutment post 52. The two ends of the spring 81 are respectively sleeved on the first abutment post 83 and the second abutment post 52. Under the constraint of the above two abutment posts, the spring 81 can be prevented from popping out when subjected to force.

[0028] In a preferred embodiment of this utility model, by adding a safety buckle (locking slider) and a spring, and designing the mandrel with a special structure, a groove is formed in the internal structure of the mandrel side to accommodate the spring and the safety buckle. A spring positioning post is located at the bottom of the groove, and a cut of the same width as the safety buckle is located on the outermost edge of the groove. At the bottom of the cut, an inward step is provided to position the safety buckle lever. After the spring is inserted into the mounting post, the safety buckle is then inserted into the mandrel. The safety buckle structure consists of a spring positioning post and a safety buckle lever, which are integrally formed. An arc-shaped stop is located at the end of the safety buckle, corresponding to the arc shape of the inner ring of the quick-release handle cam structure. When the mandrel... The axle assembly spring and safety buckle engage with the inner ring of the quick-release handle cam structure. The arc-shaped stop of the safety buckle, under the action of the spring force, just abuts against the hollow arc-shaped groove of the quick-release inner circle. After the quick-release part and the axle are engaged with the opening grooves of the hub and fork, locking the quick-release handle completes the function of locking the hub and fork. When it is necessary to release the quick-release handle, press the safety buckle paddle, and the arc-shaped stop of the safety buckle disengages from the hollow part of the quick-release cam structure ring. The end of the quick-release handle can then rotate freely around the spindle. After the handle is released, rotate the core cap to release the axle from the spindle. The front hub and wheelset are then pulled out through the axle and detached from the fork, achieving the function of free quick-release locking and unlocking of the fork and hub. During normal riding, the quick-release lever is secured by a safety buckle with an arc-shaped locking mechanism. Even if an external object hits or collides with the lever, it is not easy for the lever to come loose, ensuring the safety and stability of the quick-release lever during riding. It also prevents the hub from coming out of the fork dropout. The locking structure is relatively robust, making riding safer.

[0029] The above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, or improvements made within the technical scope of this utility model should be included within the scope of protection of this utility model.

Claims

1. A quick-release mechanism for a hub, characterized in that, The device includes a left front fork (1), a right front fork (2), a hub (3), a shaft (4), a spindle (5), a handle (6), and an end cap (7). The hub (3) is located between the left front fork (1) and the right front fork (2). The shaft (4) passes through the left front fork (1), the hub (3), and the right front fork (2) in sequence. The end cap (7) is located at the right end of the shaft (4). The end of the handle (6) is provided with an eccentric wheel (60), which has a shaft hole (61). The side of the eccentric wheel (60) is connected to the shaft hole (61). The mandrel (5) is inserted into the shaft hole (61) through the clearance slot (62). The mandrel (5) has a first screw hole (50) on its side. The left end of the shaft (4) passes through the clearance slot (62) and is screwed into the first screw hole (50). When the handle (6) is pressed towards the left front fork foot (1), the eccentric wheel (60) drives the mandrel (5) to tighten the shaft (4). A locking mechanism (8) is provided between the mandrel (5) and the eccentric wheel (60). The locking mechanism (8) is used to lock the relative position of the mandrel (5) and the eccentric wheel (60).

2. The hub quick-release mechanism as described in claim 1, characterized in that, The locking mechanism (8) includes a locking slider (80) and a spring (81). A radial groove (51) is provided at the end of the spindle (5). The locking slider (80) is slidably disposed in the radial groove (51). The spring (81) elastically abuts against the end of the locking slider (80) and the radial groove (51). A locking hole (63) is provided on the inner wall of the shaft hole (61). The end of the locking slider (80) away from the spring (81) is inserted into the locking hole (63).

3. The hub quick-release mechanism as described in claim 2, characterized in that, The locking slider (80) includes an outwardly protruding toggle part (82).

4. The hub quick-release mechanism as described in claim 1, characterized in that, The clearance slot (62) is an arc-shaped slot extending circumferentially along the eccentric wheel (60).

5. The hub quick-release mechanism as described in claim 1, characterized in that, It includes a gasket (9), through which the shaft (4) passes, and the gasket (9) includes a concave arc surface (90) that abuts against the eccentric wheel (60).

6. The hub quick-release mechanism as described in claim 1, characterized in that, The end cap (7) includes a second screw hole (70), and the right end of the shaft (4) is screwed into the second screw hole (70).

7. The hub quick-release mechanism as described in claim 2, characterized in that, The locking slider (80) includes a first abutting post (83), and the end of the radial groove (51) is provided with a second abutting post (52). The two ends of the spring (81) are respectively sleeved on the first abutting post (83) and the second abutting post (52).

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