Split type ratchet wheel structure

Abstract

The utility model discloses a split type ratchet wheel structure which comprises a clutch middle shaft, a clutch machine shell, a first pawl assembly and a second pawl assembly, the clutch machine shell is installed on the clutch middle shaft, the first pawl assembly is installed on the clutch middle shaft, the second pawl assembly is installed on the clutch machine shell, and the first pawl assembly is installed on the clutch middle shaft. The first pawl assembly can limit the clutch middle shaft to rotate or stop. The ratchet wheel and the pawl are modularized, so that on one hand, the ratchet wheel and the pawl are convenient to produce and manufacture, on the other hand, one part can be independently replaced during maintenance due to the modularization, and the maintenance cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to motor accessories, in particular to a split ratchet structure. Background Art

[0002] At present, most ratchet pawls are integrated, but when a component between the ratchet pawl is damaged, it often needs to be replaced as a whole. In this case, on the one hand, it is more cumbersome during production and on the other hand, the cost of maintenance will also increase significantly, so improvements are needed. Summary of the Invention

[0003] The utility model aims to solve the defects in the prior art such as the inconvenience of manufacturing and high maintenance costs of ratchet pawls, and provides a new split ratchet structure.

[0004] In order to solve the above technical problems, the present invention is implemented through the following technical solutions:

[0005] A split ratchet structure includes a clutch central shaft, a clutch housing, a first pawl assembly and a second pawl assembly. The clutch housing is mounted on the clutch central shaft, the first pawl assembly is mounted on the clutch central shaft, and the second pawl assembly is mounted on the clutch housing. The first pawl assembly can limit the rotation or stop of the clutch central shaft.

[0006] The utility model arranges the ratchet pawl into modules, thereby facilitating production and manufacturing on the one hand, and on the other hand, due to the modules, only one of the parts needs to be replaced during maintenance, thereby effectively reducing maintenance costs.

[0007] Preferably, in the above-mentioned split ratchet structure, the first pawl assembly includes at least three first pawls and a pawl inner ring, the first pawls are installed on the clutch center shaft along the circumferential direction, the pawl inner ring is sleeved onto the first pawl, and the first pawl cooperates with the pawl inner ring.

[0008] The first pawl can prevent the inner circle of the pawl from reversing.

[0009] Preferably, in the above-mentioned split ratchet structure, the second pawl assembly includes at least three second pawls, a pawl support frame and a pawl outer ring, the second pawl is installed on the pawl support frame along the circumferential direction, the pawl outer ring is sleeved on the second pawl, and the second pawl cooperates with the pawl outer ring.

[0010] The pawl support frame is used for installing the second pawl, and the second pawl can prevent the pawl outer ring from reversing.

[0011] Preferably, in the above-mentioned split ratchet structure, a mounting platform is provided on the clutch central shaft, and the first pawl is mounted on the mounting platform.

[0012] The installation platform is used for installing the first pawl.

[0013] Preferably, in the above-mentioned split ratchet structure, the inner ring of the pawl and the outer ring of the pawl are arranged in opposite directions.

[0014] The inner ring of the pawl and the outer ring of the pawl are in opposite directions, which can effectively prevent the outer ring of the pawl from rotating when the inner ring of the pawl rotates or prevent the inner ring of the pawl from rotating when the outer ring of the pawl rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the longitudinal structure of the utility model after assembly;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model after assembly.

[0018] Figure numbers: 1, clutch center shaft; 2, clutch housing; 3, first pawl assembly; 4, second pawl assembly; 31, first pawl; 32, pawl inner ring; 41, second pawl; 42, pawl support frame; 43, pawl outer ring; 11, mounting platform. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-3 The present invention is further described in detail with reference to the following specific embodiments, but they are not intended to limit the present invention:

[0020] Example 1

[0021] like Figure 1 、 Figure 2 、 Figure 3 As shown, a split ratchet structure includes a clutch central shaft 1, a clutch housing 2, a first pawl assembly 3 and a second pawl assembly 4. The clutch housing 2 is installed on the clutch central shaft 1, the first pawl assembly 3 is installed on the clutch central shaft 1, and the second pawl assembly 4 is installed on the clutch housing 2. The first pawl assembly 3 can limit the clutch central shaft 1 from rotating or stopping.

[0022] Preferably, the first pawl assembly 3 includes at least three first pawls 31 and a pawl inner ring 32. The first pawls 31 are installed on the clutch central shaft 1 along the circumferential direction. The pawl inner ring 32 is sleeved onto the first pawl 31, and the first pawl 31 cooperates with the pawl inner ring 32.

[0023] Preferably, the second pawl assembly 4 includes at least three second pawls 41, a pawl support frame 42 and a pawl outer ring 43. The second pawl 41 is installed on the pawl support frame 42 along the circumferential direction. The pawl outer ring 43 is sleeved on the second pawl 41, and the second pawl 41 cooperates with the pawl outer ring 43.

[0024] Specifically, a limiting clamping spring is used to install the second pawl and the pawl support frame.

[0025] Preferably, a mounting platform 11 is provided on the clutch central shaft 1 , and the first pawl 31 is mounted on the mounting platform 11 .

[0026] Specifically, a limiting clamping spring is used between the first pawl and the mounting platform for installation.

[0027] Preferably, the inner pawl ring 32 and the outer pawl ring 43 are arranged in opposite directions.

[0028] Specifically, the utility model is used on products such as electric power-assisted bicycles. When the user pedals, the pedal drives the outer ring 43 of the pawl to rotate, and the first pawl 31 will be stuck in the inner ring 32 of the pawl to prevent the outer ring 43 of the pawl from driving the inner ring 32 to rotate synchronously when rotating.

[0029] In short, the above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the patent application for the present invention should fall within the scope of the present invention.

Claims

1. A split ratchet structure, comprising a clutch shaft (1), a clutch housing (2), a first pawl assembly (3) and a second pawl assembly (4), wherein the clutch housing (2) is mounted on the clutch shaft (1), and is characterized in that: The first pawl assembly (3) is mounted on the clutch center shaft (1), and the second pawl assembly (4) is mounted on the clutch housing (2). The first pawl assembly (3) can limit the clutch center shaft (1) from rotating or stopping.

2. The split ratchet structure according to claim 1, characterized in that: The first pawl assembly (3) comprises at least three first pawls (31) and a pawl inner ring (32); the first pawls (31) are mounted on the clutch center shaft (1) along the circumferential direction; the pawl inner ring (32) is sleeved onto the first pawls (31), and the first pawls (31) cooperate with the pawl inner ring (32).

3. The split ratchet structure according to claim 2, characterized in that: The second pawl assembly (4) comprises at least three second pawls (41), a pawl support frame (42) and a pawl outer ring (43); the second pawl (41) is mounted on the pawl support frame (42) along a circumferential direction; the pawl outer ring (43) is sleeved onto the second pawl (41), and the second pawl (41) cooperates with the pawl outer ring (43).

4. The split ratchet structure according to claim 2, characterized in that: A mounting platform (11) is provided on the clutch center shaft (1), and the first pawl (31) is mounted on the mounting platform (11).

5. The split ratchet structure according to claim 3, characterized in that: The inner ratchet ring (32) and the outer ratchet ring (43) are arranged in opposite directions.

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