One-way clutch and electric power-assisted vehicle

Abstract

The utility model belongs to the technical field of electric power-assisted vehicles, and discloses a one-way clutch and an electric power-assisted vehicle, wherein the one-way clutch comprises an inner ring, an outer ring, a rolling body and a locking block, wherein the outer ring and the inner ring are rotationally connected through the rolling body, the locking block is arranged between the inner ring and the outer ring, and has an inner contact end face and an outer contact end face arranged relatively, wherein the inner contact end face is arranged in contact with the outer peripheral wall of the inner ring, and the outer contact end face is arranged in contact with the inner peripheral wall of the outer ring, and the inner ring actively rotates to drive the outer contact end face to press against the inner peripheral wall of the outer ring, and the inner contact end face presses against the outer peripheral wall of the inner ring; the outer ring actively rotates to drive the outer contact end face to release the press against the inner peripheral wall of the outer ring, and the inner contact end face releases the press against the outer peripheral wall of the inner ring; the electric power-assisted vehicle comprises the above-mentioned one-way clutch. The one-way clutch is used in an electric power-assisted vehicle to effectively disconnect the torque transmission between the motor and the driving wheel, avoid the influence of the motor tooth torque, and increase the free sliding distance of the electric power-assisted vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power-assisted vehicles, in particular to a one-way clutch and an electric power-assisted vehicle. Background Art

[0002] Electric power-assisted bicycles are driven by electric energy. They play an important role in short-distance travel because of their advantages such as lightness, flexibility, simple operation, and zero pollution. Electric power-assisted bicycles use the motor to output torque to provide power to the wheels. Specifically, the output shaft of the motor rotates to output torque, which is then transmitted to the drive wheel through the transmission assembly, thereby driving the drive wheel to rotate. However, in the prior art, the motor and the drive wheel of the electric power-assisted bicycle are generally directly connected through a transmission assembly. When the motor is not working, that is, when the electric power-assisted bicycle is free sliding, the drive wheel is affected by the motor's toothed torque, etc., which will produce a certain amount of resistance, affecting the user experience. Utility Model Content

[0003] The utility model aims to provide a one-way clutch which has a simple structure, quick response and can timely cut off the transmission of torque in one direction.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A one-way clutch, comprising:

[0006] Inner circle;

[0007] An outer ring is sleeved on the inner ring and is coaxially arranged with the inner ring;

[0008] A rolling body is provided between the outer ring and the inner ring, and the outer ring and the inner ring are rotatably connected through the rolling body;

[0009] A locking block is disposed between the inner ring and the outer ring, the locking block having an inner contact end face and an outer contact end face that are disposed opposite to each other, the inner contact end face is disposed in contact with the outer peripheral wall of the inner ring, and the outer contact end face is disposed in contact with the inner peripheral wall of the outer ring;

[0010] Active rotation of the inner ring around the first direction can drive the outer contact end face to press against the inner circumferential wall of the outer ring, while the inner contact end face presses against the outer circumferential wall of the inner ring; active rotation of the outer ring around the first direction can drive the outer contact end face to release the press against the inner circumferential wall of the outer ring, while the inner contact end face releases the press against the outer circumferential wall of the inner ring.

[0011] Preferably, the projection of the inner contact end surface in the first projection direction forms a first arc, and the two endpoints of the first arc are A1 and A2 respectively; the projection of the outer contact end surface in the first projection direction forms a second arc, and the two endpoints of the second arc are B1 and B2 respectively; the center of the first arc is O1, the distance between O1 and B1 is greater than the distance between O1 and B2, and the outer contact end surface on the side where B1 is located can be tightly against the inner circumferential wall of the outer ring.

[0012] Preferably, it further comprises a first annular frame and a second annular frame located between the inner ring and the outer ring; wherein,

[0013] The first annular frame and the second annular frame are fixedly arranged at an interval, and the rolling body is rollingly arranged between the first annular frame and the second annular frame;

[0014] The second annular frame is provided with a receiving groove, the locking block is arranged in the receiving groove, and one side of the receiving groove is provided with an elastic member corresponding to the locking block, and the elastic member is configured to provide a force that drives the locking block to generate a swinging tendency so that the outer contact end face is tightly pressed against the inner circumferential wall of the outer ring.

[0015] Preferably, the second annular frame is provided with an embedding groove on the groove wall of the accommodating groove, one end of the elastic member is located in the embedding groove, and the other end extends out of the embedding groove and abuts against the locking block.

[0016] Preferably, the locking block, the elastic member, the accommodating groove, and the embedding groove are provided in a plurality in a one-to-one correspondence; wherein,

[0017] The accommodating grooves are evenly spaced and distributed along the circumference of the second annular frame.

[0018] Preferably, a positioning hole is formed on the first annular frame, and a positioning groove is formed on the second annular frame accordingly, and opposite sides of the rolling body are respectively located in the positioning hole and the positioning groove, and the rolling body can rotate relative to the positioning hole and the positioning groove.

[0019] Preferably, the rolling body, the positioning hole, and the positioning groove are provided in a plurality in a one-to-one correspondence; wherein,

[0020] The positioning holes are evenly spaced apart along the circumference of the first annular frame, and the positioning grooves are evenly spaced apart along the circumference of the second annular frame.

[0021] Preferably, a third annular frame is further included, and the third annular frame is located on a side of the second annular frame facing away from the first annular frame, and is used to cover the accommodating groove.

[0022] Preferably, the outer circumferential wall of the inner ring is provided with a first rolling groove, and the inner circumferential wall of the outer ring is correspondingly provided with a second rolling groove, the opposite sides of the rolling body are respectively located in the first rolling groove and the first rolling groove, and the rolling body can rotate relative to the first rolling groove and the first rolling groove.

[0023] The utility model also provides an electric power-assisted vehicle, which uses the above-mentioned one-way clutch. When the motor of the electric power-assisted vehicle does not work and the drive wheel is idling, the one-way clutch can quickly and effectively disconnect the torque transmission between the motor and the drive wheel, thereby preventing the drive wheel from reversely transmitting the torque to the output shaft of the motor, avoiding the influence of the motor's cogging torque, and increasing the free sliding distance of the electric power-assisted vehicle.

[0024] An electric power-assisted vehicle, comprising any one of the one-way clutches described above, and further comprising:

[0025] A motor, wherein the output shaft of the motor is connected to the inner ring;

[0026] A driving wheel is coaxially arranged with the outer ring, and the driving wheel is fixedly connected with the outer ring.

[0027] Beneficial effects:

[0028] The one-way clutch provided by the utility model, when the inner ring actively rotates around the first direction, under the contact effect of the inner contact end face and the outer peripheral wall of the inner ring and the outer contact end face and the inner peripheral wall of the outer end, the locking block generates a tendency to swing in the first swing direction, and this swing tendency acts on the locking block to make the outer contact end face tightly against the inner peripheral wall of the outer ring, so that the inner ring and the outer ring are locked through the locking block, and then the outer ring and the inner ring rotate synchronously. When the inner ring does not actively rotate and the outer ring actively rotates around the first direction, the locking block generates a tendency to swing in the second swing direction opposite to the first swing direction. This swing tendency acts on the locking block to release the tight contact effect between the outer contact end face and the inner peripheral wall of the outer ring, and releases the tight contact effect between the inner contact end face and the outer peripheral wall of the inner ring, thereby releasing the locking between the inner ring and the outer ring, so that the inner ring can rotate relative to the outer ring. The one-way clutch has a simple structure and a rapid response, and can timely disconnect the transmission of torque in one direction.

[0029] The electric power-assisted vehicle provided by the utility model comprises a motor and a driving wheel, and also comprises the above-mentioned one-way clutch. The output shaft of the motor is connected to the inner ring, the driving wheel is coaxial with the outer ring, and the driving wheel is fixedly connected to the outer ring. When the electric power-assisted vehicle accelerates forward, the output shaft of the motor rotates around the first direction, and the rotation drives the inner ring to rotate actively. The inner ring and the outer ring are locked by a locking pin, so that the outer ring and the inner ring rotate synchronously, thereby driving the driving wheel to rotate. When the motor is not working, that is, when the electric power-assisted vehicle slides forward, the driving wheel still rotates around the first direction, driving the outer ring to rotate actively around the first direction. At this time, the locking pin can release the lock between the inner ring and the outer ring, so that the inner ring can rotate relative to the outer ring, so that the one-way clutch can quickly and effectively disconnect the torque transmission between the motor and the driving wheel, avoid the driving wheel from reversely transmitting the torque to the output shaft of the motor, avoid the influence of the motor tooth torque, and increase the free sliding distance of the electric power-assisted vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is an exploded schematic diagram of the one-way clutch part provided by the utility model;

[0031] Figure 2 It is a structural schematic diagram of the inner ring and outer ring provided by the utility model from one perspective;

[0032] Figure 3 It is a structural schematic diagram of the inner ring and outer ring provided by the utility model from another perspective;

[0033] Figure 4 It is a structural schematic diagram of the locking block provided by the utility model;

[0034] Figure 5 It is a schematic diagram of the locking block provided by the utility model when the inner ring is actively rotating;

[0035] Figure 6 This is a schematic diagram of the locking block provided by the utility model when the inner ring is not actively rotating;

[0036] Figure 7 It is a structural schematic diagram of the outer ring provided by the utility model;

[0037] Figure 8 It is a cross-sectional schematic diagram of the outer ring provided by the utility model;

[0038] Fig. 9 It is a structural schematic diagram of the inner ring provided by the utility model;

[0039] Fig.10 It is a cross-sectional schematic diagram of the inner ring provided by the utility model;

[0040] Fig.11 It is a structural schematic diagram of the first annular frame provided by the utility model;

[0041] Fig.12 This is a structural schematic diagram of a second annular frame provided by the utility model from one perspective;

[0042] Fig.13 This is a structural schematic diagram of the second annular frame provided by the utility model from another perspective;

[0043] Fig.14 This is a structural schematic diagram of the second annular frame provided by the utility model from another perspective;

[0044] Fig.15 It is a structural schematic diagram of the third annular frame provided by the utility model;

[0045] Fig.16 It is a structural schematic diagram of a driving wheel provided by the utility model.

[0046] In the figure:

[0047] 1. Inner ring; 11. First rolling groove; 12. First meshing tooth;

[0048] 2. Outer ring; 21. Second rolling groove; 22. Limiting groove;

[0049] 3. Rolling element;

[0050] 4. Locking block; 41. Inner contact end surface; 42. Outer contact end surface;

[0051] 51, first annular frame; 511, positioning hole; 512, first slot; 52, second annular frame; 521, receiving groove; 522, embedding groove; 523, positioning groove; 524, first plug connector; 525, second slot; 53, elastic member; 54, third annular frame; 541, second plug connector;

[0052] 6. End cover; 61. First pin hole;

[0053] 7. driving wheel; 71. second pin hole;

[0054] 8. Limit pin. DETAILED DESCRIPTION

[0055] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0056] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0058] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0059] This embodiment provides an electric power-assisted vehicle, which includes a motor and a driving wheel, and also includes a one-way clutch.

[0060] Reference Figures 1 to 16 As shown, the one-way clutch comprises an inner ring 1, an outer ring 2, a rolling body 3 and a locking block 4. The outer ring 2 is sleeved on the inner ring 1 and is coaxially arranged with the inner ring 1. The rolling body 3 is arranged between the outer ring 2 and the inner ring 1, and the outer ring 2 and the inner ring 1 are connected in rotation through the rolling body 3. The locking block 4 is arranged between the inner ring 1 and the outer ring 2, and the locking block 4 has an inner contact end face 41 and an outer contact end face 42 arranged opposite to each other, the inner contact end face 41 is arranged in contact with the outer peripheral wall of the inner ring 1, and the outer contact end face 42 is arranged in contact with the inner peripheral wall of the outer ring 2. The active rotation of the inner ring 1 around the first direction can drive the outer contact end face 42 to press against the inner peripheral wall of the outer ring 2, and at the same time, the inner contact end face 41 presses against the outer peripheral wall of the inner ring 1; the active rotation of the outer ring 2 around the first direction can drive the outer contact end face 42 to release the press against the inner peripheral wall of the outer ring 2, and at the same time, the inner contact end face 41 releases the press against the outer peripheral wall of the inner ring 1.

[0061] In this embodiment, the output shaft of the motor is connected to the inner ring 1. The driving wheel 7 is coaxially arranged with the outer ring 2, and the driving wheel 7 is fixedly connected to the outer ring 2.

[0062] Figure 5 The direction a in the figure is the first direction, which is also the direction in which the motor drives the driving wheel 7 to rotate when the electric power-assisted vehicle moves forward. The direction b1 is the first swing direction, and the direction b2 is the second swing direction.

[0063] Specifically, refer to Figures 1 to 6 As shown, when the inner ring 1 actively rotates around the first direction, the locking block 4 has a tendency to swing in the first swing direction under the contact between the inner contact end face 41 and the outer peripheral wall of the inner ring 1 and the outer contact end face 42 and the inner peripheral wall of the outer end, and this swinging tendency acts on the locking block 4 to make the outer contact end face 42 tightly against the inner peripheral wall of the outer ring 2, so that the inner ring 1 and the outer ring 2 are locked through the locking block 4, and then the outer ring 2 and the inner ring 1 rotate synchronously. When the inner ring 1 does not actively rotate and the outer ring 2 actively rotates around the first direction, the locking block 4 has a tendency to swing in the second swinging direction opposite to the first swinging direction. This swinging tendency acts on the locking block 4 to release the tight contact between the outer contact end face 42 and the inner peripheral wall of the outer ring 2, and releases the tight contact between the inner contact end face 41 and the outer peripheral wall of the inner ring 1, thereby releasing the locking between the inner ring 1 and the outer ring 2, so that the inner ring 1 can rotate relative to the outer ring 2. The one-way clutch has a simple structure, quick response, and can timely disconnect the transmission of torque in one direction.

[0064] As for the electric power-assisted vehicle, when the electric power-assisted vehicle accelerates forward, the output shaft of the motor rotates around the first direction, and the rotation drives the inner ring 1 to rotate actively. The inner ring 1 and the outer ring 2 are locked by the locking pin, so that the outer ring 2 and the inner ring 1 rotate synchronously, thereby driving the driving wheel 7 to rotate. When the motor is not working, that is, when the electric power-assisted vehicle slides forward, the driving wheel 7 still rotates around the first direction, driving the outer ring 2 to rotate actively around the first direction. At this time, the locking pin can release the lock between the inner ring 1 and the outer ring 2, so that the inner ring 1 can rotate relative to the outer ring 2, so that the one-way clutch can quickly and effectively disconnect the torque transmission between the motor and the driving wheel 7, prevent the driving wheel 7 from transmitting the torque in reverse to the output shaft of the motor, avoid the influence of the motor cogging torque, and increase the free sliding distance of the electric power-assisted vehicle.

[0065] In this embodiment, the rolling element 3 is configured as a roller, one side of the rolling element 3 is in rolling contact with the inner peripheral wall of the outer ring 2 , and the other side of the rolling element 3 is in rolling contact with the outer peripheral wall of the inner ring 1 .

[0066] Specifically, the inner circumferential wall of the inner ring 1 is provided with first meshing teeth 12. The output shaft of the motor is provided with second meshing teeth, and the first meshing teeth 12 can cooperate with the second meshing teeth of the motor output shaft to ensure that the inner ring 1 can be fixedly sleeved on the motor output shaft and remain reliably fixed relative to the motor output shaft.

[0067] In this embodiment, specific reference is made to Figures 4 to 6 As shown, the projection of the inner contact end face 41 in the first projection direction forms a first arc, and the two end points of the first arc are A1 and A2 respectively. The projection of the outer contact end face 42 in the first projection direction forms a second arc, and the two end points of the second arc are B1 and B2 respectively. The center of the first arc is O1, and the distance between O1 and B1 is greater than the distance between O1 and B2, and the outer contact end face 42 on the side where B1 is located can be tightly against the inner circumferential wall of the outer ring 2. Specifically, the first projection direction is Figure 2 The axial direction of the inner ring 1 and the outer ring 2. Figure 5 As shown, the first arc contacts the outer circumferential wall of the inner ring 1 at the position between A1 and A2, and because the spacing between O1 and B1 is greater than the spacing between O1 and B2, the linear spacing between the contact position of the inner contact end face 41 and the outer circumferential wall of the inner ring 1 and B1 is greater than the linear spacing between B2. Therefore, when the locking block 4 tends to swing along the b1 direction, the B1 side of the outer contact end face 42 corresponding to the second arc will approach and press against the inner circumferential wall of the outer ring 2, and under the action of the reaction force, the first arc between A1 and A2 will press against the outer circumferential wall of the inner ring 1 at the same time. For details, refer to Figure 6 As shown, when the locking block 4 has a tendency to swing along the b2 direction, the B1 side of the outer contact end face 42 corresponding to the second arc will gradually move away from the inner wall of the outer ring 2 and release the tight contact with the inner wall of the outer ring 2. At the same time, the first arc between A1 and A2 will also release the tight contact with the outer wall of the inner ring 1.

[0068] It is worth mentioning that the above is only an optional implementation of the locking block 4 structure. The locking block 4 can also be set to other structures, which are not limited too much here.

[0069] In this embodiment, refer to Figure 1 , Figures 7 to 10As shown, the outer peripheral wall of the inner ring 1 is provided with a first rolling groove 11, and the inner peripheral wall of the outer ring 2 is correspondingly provided with a second rolling groove 21, and the two opposite sides of the rolling body 3 are respectively located in the first rolling groove 11 and the first rolling groove 11, and the rolling body 3 can rotate relative to the first rolling groove 11 and the first rolling groove 11. Specifically, the first rolling groove 11 and the second rolling groove 21 are arranged in a one-to-one correspondence, and specifically, along the radial direction of the one-way clutch, the two opposite sides of the rolling body 3 are respectively located in the first rolling groove 11 and the second rolling groove 21. The arrangement of the first rolling groove 11 and the second rolling groove 21 can further ensure that the rolling process of the rolling body 3 is reliable and stable, and effectively prevent the rolling body 3 from moving and shifting.

[0070] In this embodiment, refer to Figure 1 , Figures 11 to 15 As shown, the one-way clutch further includes a first annular frame 51 and a second annular frame 52 located between the inner ring 1 and the outer ring 2. The first annular frame 51 and the second annular frame 52 are fixedly arranged at intervals, and the rolling body 3 is rollingly arranged between the first annular frame 51 and the second annular frame 52. The second annular frame 52 is provided with a receiving groove 521, and the locking block 4 is arranged in the receiving groove 521. By providing the first annular frame 51 and the second annular frame 52, a reliable installation foundation can be provided for the locking block 4 and the rolling body 3. Moreover, the locking block 4 is arranged in the receiving groove 521, and the space limitation of the receiving groove 521 can also prevent the locking block 4 from moving at will.

[0071] Furthermore, an elastic member 53 is provided on one side of the receiving groove 521 and is arranged corresponding to the locking block 4. The elastic member 53 is configured to provide a force to drive the locking block 4 to generate a swinging tendency so that the outer contact end face 42 is tightly pressed against the inner circumferential wall of the outer ring 2. Figures 5 and 6 As shown, the elastic member 53 is arranged on the side of the B1 end point of the second arc close to the outer contact end face 42. The contact between the outer circumferential wall of the inner ring 1 and the inner contact end face 41 of the locking block 4, combined with the elastic force of the elastic member 53, can more reliably and effectively make the B1 side of the outer contact end face 42 corresponding to the second arc approach and abut against the inner circumferential wall of the outer ring 2.

[0072] In this embodiment, the elastic member 53 is configured as a spring.

[0073] Specifically, the second annular frame 52 has an embedding groove 522 on the groove wall of the accommodating groove 521, one end of the elastic member 53 is located in the embedding groove 522, and the other end extends out of the embedding groove 522 and abuts against the locking block 4. The embedding groove 522 provides a reliable and stable installation and working space for the elastic member 53.

[0074] In this embodiment, the number of the locking block 4, the elastic member 53, the accommodating groove 521, and the embedding groove 522 is set one by one. Among them, the accommodating grooves 521 are evenly spaced along the circumference of the second annular frame 52. Such an arrangement can ensure the reliability and effectiveness of the locking and unlocking process between the inner ring 1 and the outer ring 2.

[0075] Further, continue to refer to Figure 1 , Figures 11 to 15 As shown, the first annular frame 51 is provided with a first slot 512, and the second annular frame 52 is correspondingly provided with a first plug connector 524. When the first annular frame 51 and the second annular frame 52 are connected, the first plug connector 524 is plugged into the first slot 512, which has a simple structure and is easy to install. Specifically, the first annular frame 51 has a plurality of first slots 512 evenly distributed along its circumference, and the second annular frame 52 has a plurality of first plug connectors 524 evenly distributed along its circumference, and the plurality of first slots 512 and the plurality of first plug connectors 524 are arranged one by one.

[0076] Furthermore, a positioning hole 511 is formed on the first annular frame 51, and a positioning groove 523 is formed on the second annular frame 52. The two opposite sides of the rolling body 3 are respectively located in the positioning hole 511 and the positioning groove 523, and the rolling body 3 can rotate relative to the positioning hole 511 and the positioning groove 523. Specifically, along the axial direction of the one-way clutch, the two opposite sides of the rolling body 3 are respectively located in the positioning hole 511 and the positioning groove 523. The provision of the positioning hole 511 and the positioning groove 523 can further ensure that the rolling body 3 can be installed stably and prevent the rolling body 3 from moving at will.

[0077] In this embodiment, the number of rolling elements 3, positioning holes 511 and positioning grooves 523 is correspondingly provided. The positioning holes 511 are evenly spaced along the circumference of the first annular frame 51, and the positioning grooves 523 are evenly spaced along the circumference of the second annular frame 52.

[0078] Further, refer to Figure 1 , Figures 11 to 15 As shown, the one-way clutch further includes a third annular frame 54, which is located on the side of the second annular frame 52 facing away from the first annular frame 51 and is used to cover the accommodating groove 521. Specifically, the positioning groove 523 is provided on one side of the second annular frame 52 along its own axial direction, and the rolling body 3 is installed on this side; the accommodating groove 521 is provided on the other side of the second annular frame 52 along its own axial direction, and the locking block 4 and the elastic member 53 are installed on this side. By providing the third annular frame 54, which is covered on the accommodating groove 521, important components such as the locking block 4 and the elastic member 53 can be covered, thereby protecting the locking block 4, the elastic member 53 and other components.

[0079] Furthermore, a second slot 525 is provided on the second annular frame 52, and a second plug connector 541 is correspondingly provided on the third annular frame 54. When the second annular frame 52 and the third annular frame 54 are connected, the second plug connector 541 is plugged into the second slot 525, which has a simple structure and is easy to install. Specifically, the second annular frame 52 has a plurality of second slots 525 evenly distributed along its circumference, and the third annular frame 54 has a plurality of second plug connectors 541 evenly distributed along its circumference, and the plurality of second slots 525 and the plurality of second plug connectors 541 are arranged one-to-one in correspondence.

[0080] Further, refer to Figure 1 , Figure 7 , Fig.16 As shown, the one-way clutch also includes an end cover 6, which is fixedly arranged on one side of the outer ring 2. Specifically, the end cover 6 is provided with a first pin hole 61, and a limiting groove 22 is provided at the outer end, and the drive wheel 7 is provided with a second pin hole 71, and the first pin hole 61, the second pin hole 71 and the limiting groove 22 are correspondingly arranged. The end cover 6, the outer ring 2 and the drive wheel 7 are connected by a limiting pin 8. Specifically, the limiting pin 8 penetrates the first pin hole 61, the limiting groove 22 and the second pin hole 71, and effectively connects the first pin hole 61, the limiting groove 22 and the second pin hole 71 in series, thereby ensuring the radial fixation between the end cover 6, the outer ring 2 and the drive wheel 7, and avoiding radial deflection between the end cover 6, the outer ring 2 and the drive wheel 7.

[0081] In this embodiment, a plurality of first pin holes 61, limiting grooves 22, second pin holes 71, and limiting pins 8 are provided one by one. Specifically, the end cover 6 is provided with a plurality of first pin holes 61 along its circumference, the driving wheel 7 is provided with a plurality of second pin holes 71 along its circumference, and the outer peripheral wall of the outer ring 2 is provided with a plurality of limiting grooves 22 along its circumference.

[0082] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A one-way clutch, characterized in that: include: Inner circle (1); An outer ring (2) is sleeved on the inner ring (1) and is coaxially arranged with the inner ring (1); A rolling body (3) is arranged between the outer ring (2) and the inner ring (1), and the outer ring (2) and the inner ring (1) are rotationally connected via the rolling body (3); A locking block (4) is arranged between the inner ring (1) and the outer ring (2), the locking block (4) having an inner contact end face (41) and an outer contact end face (42) arranged opposite to each other, the inner contact end face (41) being arranged in contact with the outer peripheral wall of the inner ring (1), and the outer contact end face (42) being arranged in contact with the inner peripheral wall of the outer ring (2); Active rotation of the inner ring (1) about a first direction can drive the outer contact end surface (42) to abut against the inner circumferential wall of the outer ring (2), while the inner contact end surface (41) abuts against the outer circumferential wall of the inner ring (1); active rotation of the outer ring (2) about a first direction can drive the outer contact end surface (42) to release its abutment against the inner circumferential wall of the outer ring (2), while the inner contact end surface (41) to release its abutment against the outer circumferential wall of the inner ring (1).

2. The one-way clutch according to claim 1, characterized in that: The projection of the inner contact end surface (41) in the first projection direction forms a first arc, and the two end points of the first arc are A1 and A2 respectively. The projection of the outer contact end surface (42) in the first projection direction forms a second arc, and the two end points of the second arc are B1 and B2 respectively. The center point corresponding to the first arc is O1, and the distance between O1 and B1 is greater than the distance between O1 and B2. The outer contact end surface (42) on the side where B1 is located can be tightly against the inner circumferential wall of the outer ring (2).

3. The one-way clutch according to claim 1, characterized in that: It also includes a first annular frame (51) and a second annular frame (52) located between the inner ring (1) and the outer ring (2); wherein: The first annular frame (51) and the second annular frame (52) are arranged at a fixed interval, and the rolling body (3) is arranged to roll between the first annular frame (51) and the second annular frame (52); The second annular frame (52) is provided with a receiving groove (521), the locking block (4) is arranged in the receiving groove (521), and an elastic member (53) corresponding to the locking block (4) is provided on one side of the receiving groove (521), the elastic member (53) being configured to provide a force for driving the locking block (4) to generate a swinging tendency so that the outer contact end surface (42) is tightly pressed against the inner peripheral wall of the outer ring (2).

4. The one-way clutch according to claim 3, characterized in that: The second annular frame (52) is provided with an embedding groove (522) on the groove wall of the accommodating groove (521); one end of the elastic member (53) is located in the embedding groove (522), and the other end extends out of the embedding groove (522) and abuts against the locking block (4).

5. The one-way clutch according to claim 4, characterized in that: The locking block (4), the elastic member (53), the accommodating groove (521), and the embedding groove (522) are provided in a plurality in a one-to-one correspondence; wherein: The accommodating grooves (521) are evenly spaced and distributed along the circumference of the second annular frame (52).

6. The one-way clutch according to claim 3, characterized in that: The first annular frame (51) is provided with a positioning hole (511), and the second annular frame (52) is correspondingly provided with a positioning groove (523); opposite sides of the rolling body (3) are respectively located in the positioning hole (511) and the positioning groove (523), and the rolling body (3) is capable of rotating relative to the positioning hole (511) and the positioning groove (523).

7. The one-way clutch according to claim 6, characterized in that: The rolling body (3), the positioning hole (511), and the positioning groove (523) are provided in a plurality in a one-to-one correspondence; wherein: The positioning holes (511) are evenly spaced and distributed along the circumference of the first annular frame (51), and the positioning grooves (523) are evenly spaced and distributed along the circumference of the second annular frame (52).

8. The one-way clutch according to claim 3, characterized in that: It also comprises a third annular frame (54), the third annular frame (54) being located on a side of the second annular frame (52) facing away from the first annular frame (51) and being used to cover the accommodating groove (521).

9. The one-way clutch according to claim 1, characterized in that: The outer circumferential wall of the inner ring (1) is provided with a first rolling groove (11), and the inner circumferential wall of the outer ring (2) is correspondingly provided with a second rolling groove (21); opposite sides of the rolling body (3) are respectively located in the first rolling groove (11) and the second rolling groove (21), and the rolling body (3) is capable of rotating relative to the first rolling groove (11) and the second rolling groove (21).

10. An electric power-assisted vehicle, characterized in that: The one-way clutch according to any one of claims 1 to 9, the electric power-assisted vehicle further comprises: A motor, wherein the output shaft of the motor is connected to the inner ring (1); A driving wheel (7), the driving wheel (7) and the outer ring (2) are arranged coaxially, and the driving wheel (7) and the outer ring (2) are fixedly connected.

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