Pawl rear hub driving device on bicycle

Abstract

The utility model discloses a pawl rear hub driving device on a bicycle, which comprises a hub body, an axle center is fixedly sleeved on the hub body through a bearing inner hole, a ratchet wheel seat is rotatably sleeved outside the axle center, a jack sheet is fixedly arranged on the outer side of the left end of the ratchet wheel seat, an elastic sheet is fixedly arranged on one side of the jack sheet, and a pawl is arranged on the other side of the elastic sheet. A groove-shaped non-return ring is installed outside the left end of the ratchet wheel seat in an embedded mode, and the left side of the groove-shaped non-return ring is movably connected with a G-shaped spring. According to the G-shaped spring, due to the unique design of the G-shaped spring, high efficiency and stability of power transmission are guaranteed through precise matching of section teeth and clamping teeth, precise limiting and guiding are provided for the G-shaped spring through precise layout of a clamping groove and a groove of the groove-shaped non-return ring, and through interaction of the groove-shaped non-return ring and the groove-shaped non-return ring, the power transmission efficiency is improved. And not only can the force be quickly and reliably transmitted as required, but also noise-free and zero-resistance smooth operation can be realized in an idling state.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ratchet pawl rear hub driving device on a bicycle. BACKGROUND

[0002] At present, the hub system of the bicycle includes shaft, bearing, hub and the like, and the material is divided into iron hub and aluminum hub. Among them, the hub is divided into front hub and rear hub, and the rear hub is the main component for driving the bicycle forward. SUMMARY

[0003] The utility model discloses a ratchet pawl rear hub driving device on a bicycle, which is suitable for solving the technical problems of large noise and friction resistance when the ratchet pawl rear hub idles.

[0004] To achieve the above purpose, the utility model adopts the technical scheme that:

[0005] A ratchet pawl rear hub driving device on a bicycle, comprising a hub body, the hub body is fixedly sleeved with a shaft center through a bearing inner hole, the outer part of the shaft center is rotatably sleeved with a ratchet seat, the left end outside of the ratchet seat is fixedly provided with a thousand jin piece, one side of the thousand jin piece is fixedly provided with a spring piece, the left end outside of the ratchet seat is embeddedly installed with a slot-shaped check ring, the left side of the slot-shaped check ring is also movably connected with a G-shaped spring, the outside of the G-shaped spring is embeddedly installed with an inner gear ring, and the bottom end of the shaft center is sleeved with a fastening nut.

[0006] Through the cooperation of the G-shaped spring, the slot-shaped check ring, the spring piece and the thousand jin piece, a precise transmission system of the rear hub is formed, when the rear hub is in the idle mode, the G-shaped spring is embedded in the slot-shaped check ring, and this process does not produce any friction through zero contact, so that the extreme smoothness and low energy consumption during idling are ensured, meanwhile, the introduction of the spring piece and the thousand jin piece can flexibly recover under stress, and a proper limited distance is formed between the G-shaped spring, further optimizing the idling performance, reducing unnecessary energy loss, and making the rider feel continuous and stable power output even in long-distance riding.

[0007] Preferably, a threaded segment one is formed in the right end inner wall of the hub body.

[0008] Preferably, a shaft center ring is fixedly sleeved with the right end outside of the shaft center.

[0009] Preferably, a section tooth is formed in one end of the G-shaped spring, and a clamping tooth is fixedly connected to the top end inside of the G-shaped spring.

[0010] Preferably, a clamping groove is formed in the outside one end of the slot-shaped check ring, and a recess is equidistantly and symmetrically formed in the inside of the slot-shaped check ring, and the clamping groove and the clamping tooth are movably connected.

[0011] Preferably, the outer side of the fastening nut is sleeved with an outer ring.

[0012] Preferably, the shaft center can pass through the inner gear ring, the G-shaped spring, the slot-shaped check ring and the ratchet seat, the G-shaped spring is embedded with the inner gear ring and is movably installed, and the slot-shaped check ring is matched with the left end of the ratchet seat and is movably connected.

[0013] Preferably, the hub body is fixedly installed in the shaft center, the inner gear ring, the G-shaped spring and the slot-shaped check ring through bearings, and the rear hub is assembled through the fastening nut by using the spring sheet and the thousand-dollar sheet on the ratchet seat and the O-shaped ring.

[0014] Compared with the prior art, the utility model provides a ratchet pawl rear hub driving device on a bicycle, which has the following beneficial effects:

[0015] 1. The utility model provides a ratchet pawl rear hub driving device on a bicycle, which is assembled through the fastening nut by using the spring sheet and the thousand-dollar sheet on the ratchet seat and the O-shaped ring.

[0016] 2. The utility model provides a ratchet pawl rear hub driving device on a bicycle, which can be applied to all ratchet pawl rear hubs on the market through the G-shaped spring and the slot-shaped check ring, greatly improves the universality and compatibility, provides more choices and convenience for users, and in the working process, the G-shaped spring is used, the precise cooperation between the section tooth and the catch tooth is ensured, the efficient and stable power transmission is ensured, the slot-shaped check ring provides precise limiting and guiding through the precise layout of the clamping groove and the groove, the interaction between the two ensures that the power can be rapidly and reliably transmitted when needed, and smooth operation without noise and zero resistance is realized in the idling state, the design not only improves the comfort of riding, but also significantly prolongs the service life of the hub; in addition, when facing scenes such as climbing or acceleration that require stronger power output, the ratchet pawl rear hub can rapidly respond and provide higher pedaling torque through the adjustment of the tension of the G-shaped spring and the cooperation with other components such as the thousand-dollar sheet and the ratchet seat, so that the rider can easily cope with various complex road conditions and enjoy more stable and efficient riding experience. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional part structure schematic view of the ratchet pawl rear hub driving device on the bicycle of the utility model.

[0018] Figure 2 It is a sectional view of the working principle of the ratchet pawl rear hub driving device on the bicycle of the utility model.

[0019] Figure 3 is a working principle detail enlarged view of the ratchet pawl rear hub driving device of the bicycle of the utility model.

[0020] Figure 4 is Figure 3 a partial enlarged view of A in the figure.

[0021] Figure 5 is a working state schematic view of the ratchet pawl rear hub driving device of the bicycle of the utility model when idling;

[0022] Figure 6 is a working principle detail enlarged view of the ratchet pawl rear hub driving device of the bicycle of the utility model when idling;

[0023] Figure 7 is Figure 6 a partial enlarged view of B in the figure.

[0024] The figure mark is:

[0025] 10, hub body; 20, shaft center; 30, inner gear ring; 40, G-shaped spring; 50, groove check ring; 60, elastic sheet; 70, thousand jin piece; 80, ratchet seat; 90, fastening nut; 101, threaded section one; 201, shaft center ring; 401, cross section tooth; 402, clamping tooth; 501, clamping groove; 502, groove; 901, outer ring. DETAILED DESCRIPTION

[0026] The following description is used to disclose the utility model so that those skilled in the art can realize the utility model. The preferred embodiments in the following description are only as examples, and other obvious variants can be thought of by those skilled in the art. EMBODIMENT

[0027] Please refer to Figures 1-5 As shown in the figure, a ratchet pawl rear hub driving device of a bicycle, including hub body 10, hub body 10 is fixed with shaft center 20 with bearing inner hole, the outer rotation of shaft center 20 is connected with ratchet seat 80, the left end outside of ratchet seat 80 is fixedly provided with thousand jin piece 70, one side of thousand jin piece 70 is fixedly provided with elastic sheet 60, the left end outside of ratchet seat 80 is embeddedly installed with groove check ring 50, the left side of groove check ring 50 is also movably connected with G-shaped spring 40, the outside of G-shaped spring 40 is embeddedly installed with inner gear ring 30, the bottom end of shaft center 20 is connected with fastening nut 90;

[0028] Through the cooperation of the assembly of the G-shaped spring 40, the groove-shaped check ring 50, the elastic sheet 60 and the thousand jin piece 70, a precise transmission system of the rear hub is formed. When the rear hub is in the idling mode, the G-shaped spring 40 is ingeniously embedded in the groove-shaped check ring 50. This process is zero contact and does not produce any friction, thereby ensuring the ultimate smoothness and low energy consumption in idling. At the same time, the introduction of the elastic sheet 60 and the thousand jin piece 70 can flexibly recover under stress, forming a just right limited distance between the G-shaped spring 40, further optimizing the idling performance and reducing unnecessary energy loss, so that the rider can feel continuous and stable power output even in long-distance cycling.

[0029] The hub body 10 is fixedly installed in the shaft center 20, the inner tooth ring 30, the G-shaped spring 40 and the groove-shaped check ring 50 by bearings, and is assembled into the rear hub by the elastic sheet 60 and the thousand jin piece 70 on the ratchet seat 80 through the fastening nut 90 and the O-ring.

[0030] In this scheme, when the teeth 402 in the G-shaped spring 40 are not clamped in the clamping groove 501 in the groove-shaped check ring 50, the ratchet hub will make a louder sound when idling. However, in this state, it transmits more power, always engages when driving at a fixed angle, and has higher pedaling torque and stability. This means that in some specific cycling scenarios or needs, such as the need for more powerful power output for climbing or acceleration, this design can provide more reliable power protection to ensure that the rider can easily cope with various road conditions and improve the overall performance and adaptability of the bicycle. EMBODIMENT

[0031] Please refer to Figures 1-5 As shown in the figure, a threaded section one 101 is formed in the right end inner wall of the hub body 10.

[0032] A shaft center ring 201 is fixedly sleeved on the outer side of the right end of the shaft center 20.

[0033] A fixed section tooth 401 is formed at one end of the G-shaped spring 40, and a clamping tooth 402 is fixedly connected to the inner side of the top end of the G-shaped spring 40.

[0034] A clamping groove 501 is formed at one end of the outer side of the groove-shaped check ring 50, and a recess 502 is formed symmetrically on the inner side of the groove-shaped check ring 50. The clamping groove 501 is movably connected with the clamping tooth 402.

[0035] An outer ring 901 is fixedly sleeved on the outer side of the fastening nut 90.

[0036] The shaft center 20 can pass through the inner tooth ring 30, the G-shaped spring 40, the groove-shaped check ring 50 and the ratchet seat 80. The G-shaped spring 40 is embedded with the inner tooth ring 30 and movably installed. The groove-shaped check ring 50 is matched with the left end of the ratchet seat 80 and movably connected.

[0037] The working principle and usage of this device are as follows: During use, when the locking tooth 402 of the G-spring 40 engages in the slot 501 of the grooved check ring 50, driving the jack 70 to work, the spring 60 is retracted by the force, creating a limited distance between them, making the idle rotation smoother, reducing energy loss, and improving riding comfort and efficiency. Simultaneously, this device only requires two parts, the G-spring 40 and the grooved check ring 50, and is suitable for all ratchet rear hubs on the market. When the locking tooth 402 of the G-spring 40 engages in the slot 501 of the grooved check ring 50, the cross-section tooth 401 of the other G-spring 40 engages on any tooth of the internal gear ring 30, according to… Figure 5 When the arrow in the indicated direction is rotated, the retaining tooth 402 in the G-shaped spring 40 engages in the retaining groove 501 in the grooved check ring 50, causing the groove 502 to rotate clockwise and compress the jack piece 70. At this time, the spring piece 60 is retracted under force, as shown. Figure 7 The limited distance at the indicated location, where L1 exhibits clear characteristics such as no noise, zero resistance, and long inertia during idle rotation, is simple and novel in structure, and meets the needs of the next generation of bicycles. Secondly, when the 402 locking tooth in the G-spring 40 is not engaged in the 501 locking groove in the grooved check ring 50, the ratchet rear hub makes a loud noise during idle rotation, but its power transmission is stronger, and the fixed-angle drive continuously engages the pedaling torque and provides higher stability. In summary, through the coordinated work of key components such as the G-spring 40, the grooved check ring 50, the spring plate 60, and the jack plate 70, a precision transmission system for the bicycle rear hub is formed. These components not only ensure efficient and stable power transmission, but also achieve smooth and comfortable riding through their unique design, bringing a more enjoyable riding experience to the rider.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A ratchet rear hub drive for a bicycle comprising a hub body (10) characterised in that: The flower drum body (10) is fixedly sleeved with the shaft (20) in the bearing inner hole, the outer part of the shaft (20) is rotatably sleeved with the ratchet seat (80), the left end outer side of the ratchet seat (80) is fixedly provided with the jack piece (70), one side of the jack piece (70) is fixedly provided with the elastic sheet (60), the left end outer part of the ratchet seat (80) is embeddedly installed with the slot-shaped check ring (50), the left side of the slot-shaped check ring (50) is also movably connected with the G-shaped spring (40), the outer part of the G-shaped spring (40) is embeddedly installed with the inner gear ring (30), and the bottom end of the shaft is sleeved with the fastening nut (90).

2. A ratchet hub drive for a bicycle as defined in claim 1, wherein: The right end inner wall of the flower drum body (10) is provided with a threaded section one (101).

3. A ratchet hub drive for a bicycle as defined in claim 1 wherein, The right end outer side of the shaft (20) is fixedly sleeved with the shaft ring (201).

4. A ratchet hub drive for a bicycle as defined in claim 1 wherein, One end of the G-shaped spring (40) is fixedly provided with the cross-section tooth (401), and the top end inner side of the G-shaped spring (40) is fixedly connected with the clamping tooth (402).

5. A ratchet hub drive for a bicycle as defined in claim 1 wherein, The outer side one end of the slot-shaped check ring (50) is provided with the clamping groove (501), the inner side of the slot-shaped check ring (50) is provided with the recess (502) at equal intervals and symmetrically, and the clamping groove (501) and the clamping tooth (402) are movably connected.

6. A ratchet hub drive for a bicycle as defined in claim 1, wherein, The outer side of the fastening nut (90) is fixedly sleeved with the outer ring (901).

7. A ratchet hub drive for a bicycle as defined in claim 1 wherein, The shaft (20) can pass through the inner gear ring (30), the G-shaped spring (40), the slot-shaped check ring (50) and the ratchet seat (80), the G-shaped spring (40) is embedded with the inner gear ring (30) and is movably installed, the slot-shaped check ring (50) is matched with the left end of the ratchet seat (80) and is movably connected.

8. A ratchet hub drive for a bicycle as defined in claim 1, wherein, The flower drum body (10) is fixedly installed in the shaft (20), the inner gear ring (30), the G-shaped spring (40) and the slot-shaped check ring (50) by the bearing, and is assembled into the rear flower drum by the elastic sheet (60) and the jack piece (70) on the ratchet seat (80) through the fastening nut (90) and the O-shaped ring.

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