Self-locking bicycle hub

Abstract

The utility model discloses a self-locking bicycle hub which comprises a shaft center, and protective baffles are fixedly installed on the two sides of the shaft center. The hub shell is fixedly mounted on the outer side of the axle center; the hub ferrule is fixedly mounted on the outer side of the hub shell; the vacant groove is formed in the inner side of the hub shell; and the locking assembly is arranged on the inner side of the vacant groove. According to the self-locking type bicycle hub, when a transmission chain drives transmission chain teeth to rotate, a rotating shaft can be synchronously driven to rotate on the outer side of the axis, so that a locking pipe sleeve on the outer side of the rotating shaft rotates along with the rotating shaft, and tooth blocks on the inner side of a ratchet wheel are clamped on the outer sides of ratchets through rotation of the locking pipe sleeve; through clamping and locking of the ratchet wheel and the ratchets, the ratchet wheel drives the tower footing on the outer side of the ratchets to rotate along with the ratchet wheel, so that the hub shell connected with the tower footing drives the hub ferrule on the outer side to rotate along with the hub shell, a hub of a rear wheel of the bicycle is driven to rotate, and advancing power is provided for the bicycle.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle hubs, and specifically relates to a self-locking bicycle hub. Background Technique

[0002] A bicycle, also known as a pedal bike or a bicycle, is a small two-wheeled land vehicle. There is an important part on the bicycle called the bicycle hub, also known as the "hub barrel". It is an important component of the bicycle wheel hub system. It is located at both ends of the axle and is used to fix the wheel on the vehicle and transmit the power of the bicycle to the wheel so that it can rotate.

[0003] A bicycle hub with a simple structure, low processing cost and long service life, with the application number CN201310055092.9, includes: a spindle, a hub body sleeved on the spindle, a left axle retainer, a middle axle retainer and a right axle retainer arranged on the spindle. A pair of ball bowls are arranged in the two end ports of the hub body. The pair of ball bowls and the ratchet with a ball bowl surface on the outer side wall form a pair of rolling bearings through a circle of steel balls; on the inner wall surfaces of the two end ports of the ratchet, there are left and right ball bowl parts. The left and right ball bowl parts are respectively matched with the middle axle retainer and the right axle retainer through a circle of steel balls to form another pair of raceway bearings. The bicycle hub of the present invention has a large bearing diameter, and the bearing force acts on the wall of the ratchet housing. During use, the middle axle retainer and the steel balls are not easily worn, which affects the service life of the entire hub. In addition, since the middle axle retainer and the spindle are of a split structure, the processing of the raceway surfaces on both sides is more convenient and the cost is low.

[0004] This device uses balls as the transmission structure to drive the rotation of the wheel hub. Although ball transmission can effectively reduce the wear between transmission devices, it cannot prevent the rear wheel of the bicycle from reversing during the use of the bicycle. On uphill roads and other road surfaces, it is very easy for the rear wheel of the bicycle to slip backward, which has a certain degree of danger.

[0005] In view of the above problems, there is an urgent need to innovate and design on the basis of the original self-locking bicycle hub structure. Content of the Utility Model

[0006] The purpose of the utility model is to provide a self-locking bicycle hub to solve the problem proposed in the above background technique that although ball transmission can effectively reduce the wear between transmission devices, it cannot prevent the rear wheel of the bicycle from reversing during the use of the bicycle. On uphill roads and other road surfaces, it is very easy for the bicycle to slip backward, which has a certain degree of danger.

[0007] To achieve the above object, the utility model provides the following technical solutions: A self-locking bicycle hub, including an axle, with protective baffles fixedly installed on both sides of the axle; a hub shell fixedly installed outside the axle; a hub ring fixedly installed outside the hub shell; an empty slot opened inside the hub shell; a locking assembly arranged inside the empty slot; wherein, through the locking assembly, the hub shell can be driven to rotate synchronously; through the locking assembly, the hub shell can be prevented from reversing.

[0008] Preferably, the locking assembly includes a sealing gasket disc and a freewheel body, the sealing gasket disc is fixedly installed inside the empty slot, and a freewheel body is fixedly connected to the outside of the sealing gasket disc.

[0009] Preferably, the locking assembly further includes a notch, a concentric shaft and ratchet teeth, the notch is opened equiangularly inside the freewheel body, and a concentric shaft is rotatably connected inside the notch, and ratchet teeth are fixedly installed on the outside of the concentric shaft.

[0010] Preferably, the locking assembly further includes a sliding rod, a telescopic spring and a sliding groove, the sliding groove is opened inside the freewheel body, and a sliding rod is slidably connected inside the sliding groove, the head end of the sliding rod is fixedly connected to the outside of the ratchet teeth, and a telescopic spring is connected between the ratchet teeth and the inner wall of the notch.

[0011] Preferably, the locking assembly further includes a rotating shaft and a transmission chain gear, the rotating shaft is rotatably connected outside the axle, and a transmission chain gear is fixedly installed on the outside of the rotating shaft.

[0012] Preferably, the locking assembly further includes a locking sleeve and a ratchet, the locking sleeve is fixedly connected to the outside of the rotating shaft, and a ratchet is fixedly installed inside the locking sleeve.

[0013] Preferably, the ratchet and the ratchet teeth form a snap connection.

[0014] Compared with the prior art, the beneficial effect of the utility model is that the self-locking bicycle hub is provided with:

[0015] 1. A self-locking structure. When the transmission chain drives the transmission chain gear to rotate, it will synchronously drive the rotating shaft to rotate outside the axle, so that the locking sleeve outside the rotating shaft rotates together. The rotation of the locking sleeve will cause the tooth block inside the ratchet to be snapped onto the outside of the ratchet teeth. Thus, through the engagement and locking of the ratchet and the ratchet teeth, the ratchet drives the freewheel body outside the ratchet teeth to rotate together, so that the hub shell connected to the freewheel body drives the hub ring outside to rotate together, thereby driving the hub of the rear wheel of the bicycle to rotate and providing power for the bicycle to move forward.

[0016] 2. Anti-reversal structure. When on an uphill road surface or when the rotational speed of the wheel hub is faster than that of the pedal, the ratchet will limit the rotation of the high-speed or reverse-rotating ratchet teeth, thereby driving the rotational speed of the entire wheel hub to decrease or preventing the wheel hub from reversing, thus improving the safety performance of riding a bicycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic three-dimensional structure diagram of the whole of the present utility model;

[0018] Figure 2 is a schematic exploded structure diagram of the whole of the present utility model;

[0019] Figure 3 is a schematic front sectional structure diagram of the empty slot of the present utility model;

[0020] Figure 4 is a schematic exploded structure diagram of the freewheel hub and the locking sleeve of the present utility model;

[0021] Figure 5 is a schematic connection structure diagram of the ratchet and the ratchet teeth of the present utility model;

[0022] Figure 6 For the present utility model Figure 5 is a schematic enlarged structure diagram at position A in the present utility model.

[0023] In the figure: 1, axle center; 2, protective baffle; 3, hub shell; 4, wheel hub ring; 5, empty slot; 6, locking assembly; 601, sealing gasket disc; 602, freewheel hub; 603, notch; 604, concentric shaft; 605, ratchet teeth; 606, sliding rod; 607, telescopic spring; 608, chute; 609, rotating shaft; 610, locking sleeve; 611, ratchet; 612, drive chain teeth. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the scope of protection of the present utility model.

[0025] Please refer to Figures 1 - 6, the present utility model provides a technical solution: a self-locking bicycle hub, comprising: an axle 1, with protective baffles 2 fixedly installed on both sides of the axle 1; a hub shell 3, fixedly installed outside the axle 1; a hub ring 4, fixedly installed outside the hub shell 3; an empty slot 5, opened inside the hub shell 3; a locking component 6, arranged inside the empty slot 5; wherein, through the locking component 6, the hub shell 3 can be driven to rotate synchronously; through the locking component 6, the hub shell 3 can be prevented from reversing;

[0026] The locking component 6 includes a sealing gasket 601 and a freehub body 602, the sealing gasket 601 is fixedly installed inside the empty slot 5, and a freehub body 602 is fixedly connected to the outside of the sealing gasket 601; the locking component 6 further includes a notch 603, a concentric shaft 604 and ratchet teeth 605, the notch 603 is equally angularly opened inside the freehub body 602, and a concentric shaft 604 is rotatably connected inside the notch 603, and ratchet teeth 605 are fixedly installed on the outside of the concentric shaft 604; the locking component 6 further includes a sliding rod 606, a telescopic spring 607 and a sliding groove 608, the sliding groove 608 is opened inside the freehub body 602, and a sliding rod 606 is slidably connected inside the sliding groove 608, the head end of the sliding rod 606 is fixedly connected to the outside of the ratchet teeth 605, and a telescopic spring 607 is connected between the ratchet teeth 605 and the inner wall of the notch 603; the locking component 6 further includes a rotating shaft 609 and a driving chain gear 612, the rotating shaft 609 is rotatably connected outside the axle 1, and a driving chain gear 612 is fixedly installed on the outside of the rotating shaft 609; the locking component 6 further includes a locking sleeve 610 and a ratchet 611, the locking sleeve 610 is fixedly connected to the outside of the rotating shaft 609, and a ratchet 611 is fixedly installed inside the locking sleeve 610; the ratchet 611 and the ratchet teeth 605 form a snap connection;

[0027] In this structure, when the drive chain drives the drive chain gear 612 to rotate, it will synchronously drive the rotating shaft 609 to rotate outside the axle 1, so that the locking sleeve 610 outside the rotating shaft 609 rotates together. The rotation of the locking sleeve 610 will cause the tooth block inside the ratchet 611 to be engaged with the outside of the ratchet teeth 605. Thus, through the engagement and locking of the ratchet 611 and the ratchet teeth 605, the ratchet 611 drives the freehub body 602 outside the ratchet teeth 605 to rotate together, so that the hub shell 3 connected to the freehub body 602 drives the outer hub ring 4 to rotate together, thereby driving the hub of the bicycle rear wheel to rotate, providing power for the bicycle to move forward. And when on an uphill road surface or the rotational speed of the hub is faster than the speed of the pedal, the ratchet 611 will limit the ratchet teeth 605 that rotate at high speed or reverse, thereby driving the rotational speed of the entire hub to decrease or preventing the hub from reversing, thereby improving the safety performance of riding a bicycle.

[0028] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0029] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-locking bicycle hub, characterized in that, It includes: Axle center (1), with protective baffles (2) fixedly installed on both sides of the axle center (1); Hub shell (3), which is fixedly installed outside the axle center (1); Hub ring (4), which is fixedly installed outside the hub shell (3); Empty slot (5), which is opened inside the hub shell (3); Locking component (6), which is arranged inside the empty slot (5); wherein, Through the locking component (6), the hub shell (3) can be driven to rotate synchronously; Through the locking component (6), the reverse rotation of the hub shell (3) can be prevented.

2. The self-locking bicycle hub according to claim 1, characterized in that: The locking component (6) includes a sealing gasket (601) and a freewheel body (602), the sealing gasket (601) is fixedly installed inside the empty slot (5), and the freewheel body (602) is fixedly connected to the outside of the sealing gasket (601).

3. The self-locking bicycle hub according to claim 2, wherein: The locking component (6) further includes a notch (603), a concentric shaft (604) and ratchet teeth (605), the notch (603) is equally angularly opened inside the freewheel body (602), and the concentric shaft (604) is rotatably connected inside the notch (603), and ratchet teeth (605) are fixedly installed on the outside of the concentric shaft (604).

4. The self-locking bicycle hub according to claim 3, wherein: The locking component (6) further includes a sliding rod (606), a telescopic spring (607) and a sliding groove (608), the sliding groove (608) is opened inside the freewheel body (602), and the sliding rod (606) is slidably connected inside the sliding groove (608), the first end of the sliding rod (606) is fixedly connected to the outside of the ratchet teeth (605), and a telescopic spring (607) is connected between the ratchet teeth (605) and the inner wall of the notch (603).

5. The self-locking bicycle hub according to claim 4, characterized in that: The locking component (6) further includes a rotating shaft (609) and a transmission chain gear (612), the rotating shaft (609) is rotatably connected to the outside of the axle center (1), and the transmission chain gear (612) is fixedly installed on the outside of the rotating shaft (609).

6. The self-locking bicycle hub according to claim 5, characterized in that: The locking component (6) further includes a locking tube sleeve (610) and a ratchet wheel (611), the locking tube sleeve (610) is fixedly connected to the outside of the rotating shaft (609), and the ratchet wheel (611) is fixedly installed inside the locking tube sleeve (610).

7. The self-locking bicycle hub according to claim 6, characterized in that: The ratchet wheel (611) and the ratchet teeth (605) form a snap connection.

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