A one-way clutch

Abstract

The present invention discloses a one-way clutch, wherein the inner wall of the outer ring is provided with a plurality of first limiters along the circumferential direction, the end face of the outer ring is provided with a limit groove; the limit block on the end face of the inner ring is plugged into the limit groove; a plurality of rolling support structures are provided between any two adjacent drive components, the plurality of first limiters are arranged in one-to-one correspondence with the plurality of drive components, the drive component comprises a second limiter provided on the inner ring and a spring with two ends respectively pressed against the first limiter and the second limiter, the third limiter of the rolling support structure is used to fix the position of the roller, a plurality of fourth limiters are provided between any two adjacent first limiters on the outer ring, the spring can drive the second limiter to move along the first clockwise direction so that the limit block is pressed against the groove wall of the limit groove, and the roller is pressed against the fourth limiter and the transmission shaft respectively along the radial direction of the inner ring. The one-way clutch can prevent the roller and the spring from falling off, has a small number of parts, a simple structure, high assembly efficiency and good performance.

Description

Technical Field

[0001] The present invention relates to the technical field of clutches, and in particular to a one-way clutch. Background Art

[0002] One-way clutch bearing is a type of bearing, which is characterized by the function of one-way rotation and reverse stopping. Therefore, one-way clutch is widely used in the machinery industry. The existing one-way clutch mainly includes roller one-way clutch and wedge one-way clutch. For the existing roller one-way clutch, there are many parts and the assembly process is complicated. In addition, most roller one-way clutches drive the roller to the working position through the transmission shaft, and the two ends of the spring are respectively pressed against the grooves of the roller and the inner ring, which causes the roller and the spring to fall off from the retaining frame during the assembly process, resulting in low assembly efficiency and poor performance. Summary of the invention

[0003] The object of the present invention is to provide a one-way clutch to solve the problems of the one-way clutch in the prior art, such as the large number of parts, the roller and the spring being easy to fall off from the retaining frame, the low assembly efficiency and the poor performance.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A one-way clutch, mounted on a transmission shaft, comprises:

[0006] An outer ring, wherein the inner wall of the outer ring is provided with a plurality of first limiting members along the circumferential direction, and the end surface of the outer ring is provided with a limiting groove;

[0007] Inner ring, the outer ring is sleeved on the inner ring, a limit block is convexly provided on the end surface of the inner ring, and the limit block is inserted into the limit groove;

[0008] A plurality of drive assemblies are arranged at intervals along the circumference of the inner ring, and a plurality of rolling support structures are arranged between any two adjacent drive assemblies. A plurality of the first limiting members are arranged in a one-to-one correspondence with the plurality of drive assemblies. The drive assembly includes a second limiting member arranged on the inner ring, and a spring arranged on the second limiting member, and the two ends of the spring are respectively pressed against the second limiting member and the first limiting member. The rolling support structure includes a third limiting member and a roller, and the third limiting member is used to fix the position of the roller. A plurality of fourth limiting members are arranged between any two adjacent first limiting members on the outer ring, and the plurality of fourth limiting members are arranged in a one-to-one correspondence with the plurality of third limiting members. The spring can drive the second limiting member to move along the first clockwise direction, so that the limiting block is pressed against the groove wall of the limiting groove, and the roller is respectively pressed against the fourth limiting member and the transmission shaft along the radial direction of the inner ring.

[0009] Preferably, the second limiting member is a groove, the groove is rectangular, and two ends of the spring are respectively pressed against the groove and the first limiting member.

[0010] Preferably, the first limiting member is a first wedge-shaped groove.

[0011] Preferably, the third limiting member comprises two limiting plates which are arc-shaped and have openings facing each other, the two limiting plates form a receiving cavity, and the roller is located in the receiving cavity.

[0012] Preferably, the central angle corresponding to the limiting plate is greater than 90° and less than 180°.

[0013] Preferably, the fourth limiting member is a second wedge-shaped groove, and the transmission shaft can drive the roller to rotate along a second clockwise direction, and the first clockwise direction and the second clockwise direction are opposite directions.

[0014] Preferably, the spring is a rectangular spring.

[0015] Preferably, along the circumference of the outer ring, a plurality of protrusions are provided at intervals on the outer peripheral surface of the outer ring, and the distance between two adjacent protrusions is L, and any two Ls are not equal.

[0016] Preferably, the inner ring is made of plastic material.

[0017] Preferably, the third limiting member is integrally formed with the inner ring.

[0018] Beneficial effects of the present invention:

[0019] The object of the present invention is to provide a one-way clutch, which is assembled on a transmission shaft and comprises an outer ring, an inner ring and a plurality of drive assemblies arranged at intervals along the circumference of the inner ring, the inner wall of the outer ring is provided with a plurality of first limit members along the circumference, and the end face of the outer ring is provided with a limit groove; the outer ring is sleeved on the inner ring, the end face of the inner ring is provided with a limit block, and the limit block is inserted into the limit groove; a plurality of rolling support structures are provided between any two adjacent drive assemblies, the plurality of first limit members are provided in a one-to-one correspondence with the plurality of drive assemblies, and the drive assembly comprises a second limit member provided on the inner ring A limit piece, and a spring arranged on the second limit piece, the two ends of the spring are respectively pressed against the first limit piece and the second limit piece, the rolling support structure includes a third limit piece and a roller, the third limit piece is used to fix the position of the roller, and multiple fourth limit pieces are arranged between any two adjacent first limit pieces on the outer ring, and the positions of the multiple fourth limit pieces and the multiple third limit pieces are arranged in a one-to-one correspondence, the spring can drive the second limit piece to move along the first clockwise direction, so that the limit block is pressed against the groove wall of the limit groove, and the roller is radially pressed against the fourth limit piece and the transmission shaft. Compared with the prior art in which the transmission shaft drives the roller to reach the working position, the one-way clutch presses the two ends of the spring against the first limit piece and the second limit piece respectively, and the restoring force of the spring drives the second limit piece to rotate along the first clockwise direction, thereby driving the inner ring to rotate along the first clockwise direction, so that the limit block presses against the groove wall of the limit groove. It can be understood that the spring is always in a compressed state. When the spring drives the limit block to press against the groove wall of the limit groove, the roller presses against the fourth limit piece and the transmission shaft in the radial direction, and the roller reaches the working position and is assembled on the inner ring. The transmission shaft will no longer be able to drive the roller to move in the first clockwise direction, and can only drive the roller to rotate in the opposite direction of the first clockwise direction, thereby realizing the unidirectional rotation of the transmission shaft, with a small number of parts, a simple structure and convenient operation. Compared with the prior art in which the two ends of the spring are respectively pressed against the grooves of the roller and the inner ring, the one-way clutch sets the spring on the second limit piece, which can prevent the spring from falling off the inner ring. At the same time, the assembly position of the roller is limited by the third limit piece, which can prevent the roller from falling off, so that the one-way clutch has high assembly efficiency and good performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a structural schematic diagram of a one-way clutch provided by a specific embodiment of the present invention;

[0021] Figure 2 is a cross-sectional view of a one-way clutch provided by a specific embodiment of the present invention;

[0022] Figure 3 is a schematic structural diagram of an outer ring of a one-way clutch provided in a specific embodiment of the present invention;

[0023] Figure 4 is a schematic structural diagram of an inner ring of a one-way clutch provided in a specific embodiment of the present invention;

[0024] Figure 5 It is a schematic structural diagram of a spring of a one-way clutch provided in a specific embodiment of the present invention.

[0025] In the figure:

[0026] 1. outer ring; 11. first limiting member; 12. limiting groove; 13. fourth limiting member; 14. protrusion;

[0027] 2. Inner ring; 21. Limit block;

[0028] 31. second stopper; 32. spring;

[0029] 41. The third limiting member; 411. The limiting plate; 42. The roller. DETAILED DESCRIPTION

[0030] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0031] 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.

[0032] In the present invention, 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.

[0033] The present invention provides a one-way clutch, such as Figure 1-5As shown, the one-way clutch is assembled on the transmission shaft, which includes an outer ring 1, an inner ring 2 and a plurality of drive components arranged at intervals along the circumference of the inner ring 2. The inner wall of the outer ring 1 is provided with a plurality of first limit members 11 along the circumference, and the end face of the outer ring 1 is provided with a limit groove 12; the end face of the inner ring 2 is provided with a limit block 21, and the limit block 21 is inserted into the limit groove 12; a plurality of rolling support structures are provided between any two adjacent drive components, and the plurality of first limit members 11 are arranged one-to-one with the plurality of drive components, and the drive component includes a second limit member 31 arranged on the inner ring 2, and a spring arranged on the second limit member 31. 32, both ends of the spring 32 are respectively pressed against the second limit member 31 and the first limit member 11, the rolling support structure includes a third limit member 41 and a roller 42, the third limit member 41 is used to fix the position of the roller 42, and a plurality of fourth limit members 13 are arranged between any two adjacent first limit members 11 on the outer ring 1, and the plurality of fourth limit members 13 are arranged in a one-to-one correspondence with the plurality of third limit members 41, and the spring 32 can drive the second limit member 31 to move along the first clockwise direction, so that the limit block 21 is pressed against the groove wall of the limit groove 12, and the roller 42 is radially pressed against the fourth limit member 13 and the transmission shaft. Compared with the prior art in which the transmission shaft drives the roller to reach the working position, the one-way clutch presses the two ends of the spring 32 against the second limit piece 31 and the first limit piece 11 respectively, and the restoring force of the spring 32 drives the second limit piece 31 to rotate along the first clockwise direction, thereby driving the inner ring 2 to rotate along the first clockwise direction, so that the limit block 21 presses against the groove wall of the limit groove 12. It can be understood that the spring 32 is always in a compressed state. When the spring 32 drives the limit block 21 to press against the limit groove 12, the roller 42 presses against the fourth limit piece 13 and the transmission shaft in the radial direction, and the roller 42 reaches the working position. The transmission shaft equipped with the inner ring 2 will no longer be able to drive the roller 42 to move along the first clockwise direction, and can only drive the roller 42 to rotate in the opposite direction of the first clockwise direction, thereby realizing the unidirectional rotation of the transmission shaft, with a small number of parts, a simple structure, and convenient operation; compared with the prior art in which the two ends of the spring are respectively pressed against the grooves of the roller and the inner ring, the one-way clutch sets the spring 32 on the second limiter 31, which can prevent the spring 32 from falling off the inner ring 2, and at the same time, the third limiter 41 is used to limit the assembly position of the roller 42, which can prevent the roller 42 from falling off, so that the assembly efficiency of the one-way clutch is high and the use performance is good. It can be understood that the spring 32 and the roller 42 of the one-way clutch do not contact each other, and the relative position of the third limiter 41 and the roller 42 does not change.

[0034] Among them, the outer ring 1 and the inner ring 2 are clearance fit.

[0035] Alternatively, if Figure 2 and Figure 4As shown, the second stopper 31 is a groove, which is rectangular, and the two ends of the spring 32 are respectively pressed against the groove wall of the groove and the first stopper 11. By setting the second stopper 31 as a rectangular groove, the groove can accommodate part of the spring 32 to effectively prevent the spring 32 from falling off from the inner ring 2, which is convenient for assembling the one-way clutch. Preferably, the spring 32 is a rectangular spring. The rectangular spring has a large contact area with the groove wall of the groove, and the rectangular spring has a simple structure and is easy to install.

[0036] Preferably, the first stopper 11 is a first wedge-shaped groove. By setting the first stopper 11 as a wedge-shaped groove, the two ends of the spring 32 are respectively pressed against the first stopper 11 and the second stopper 31, so that the restoring force of the spring 32 drives the second stopper 31 to rotate along the first clockwise direction, thereby driving the inner ring 2 to rotate along the first clockwise direction, so that the stopper 21 is pressed against the side wall of the stopper groove 12, and the roller 42 is pressed against the fourth stopper 13 and the transmission shaft in the radial direction, and the roller 42 reaches the working position.

[0037] Preferably, a protruding column is provided on the bottom wall of the groove, and the spring 32 is sleeved on the protruding column to limit the compression path of the spring 32 when it is compressed, and can further prevent the spring 32 from falling off.

[0038] Alternatively, if Figure 2 and Figure 4 As shown, the third limiting member 41 includes two limiting plates 411 that are arc-shaped and have openings facing each other. The two limiting plates 411 form a receiving cavity, and the roller 42 is located in the receiving cavity. By providing two arc-shaped limiting plates 411, the two arc-shaped limiting plates 411 can cover the roller 42 to prevent the roller 42 from falling off, so that the one-way clutch has high assembly efficiency and good performance.

[0039] Preferably, the central angle of the limiting plate 411 is greater than 90° and less than 180°, so as to ensure that the two arc-shaped limiting plates 411 can better cover the roller 42 and also ensure that the roller 42 is pressed against the inner wall of the outer ring 1 and the transmission shaft along the radial direction of the inner ring 2 .

[0040] Preferably, the third stopper 41 is integrally formed with the inner ring 2, which can save processing costs, further reduce assembly steps, and improve structural strength.

[0041] Preferably, the inner ring 2 is made of plastic material. The inner ring 2 does not bear radial load, so the use of plastic material saves production costs and also facilitates the assembly of the roller 42 to the third stopper 41.

[0042] Preferably, if Figure 2 and Figure 3As shown, the fourth limiting member 13 is a second wedge-shaped groove, and the transmission shaft can drive the roller 42 to rotate along the second clockwise direction, and the first clockwise direction is opposite to the second clockwise direction. By setting the fourth limiting member 13 as the second wedge-shaped groove, when the spring 32 drives the limiting block 21 to move along the first clockwise direction and presses against the side wall of the limiting groove 12, the roller 42 presses against the second wedge-shaped groove and the transmission shaft in the radial direction, and the roller 42 reaches the working position, and the transmission shaft assembled on the inner ring 2 will no longer drive the roller 42 to move along the first clockwise direction. It can be understood that at this time, the roller 42 presses against the narrower end of the second wedge-shaped groove, so that the roller 42 can no longer continue to move along the first clockwise direction, and thus the transmission shaft can no longer rotate along the first clockwise direction; along the second pointer direction, that is, in the opposite direction of the first clockwise direction, the groove width of the second wedge-shaped groove gradually increases, so that the transmission shaft can drive the roller 42 to rotate along the second clockwise direction, so as to realize the unidirectional rotation of the transmission shaft.

[0043] Preferably, the roller 42 is made of metal material. The metal material has good strength and hardness, so that the roller 42 can withstand radial loads.

[0044] Alternatively, if Figure 1-3 As shown, along the circumference of the outer ring 1, the outer circumferential surface of the outer ring 1 is provided with a plurality of protrusions 14 at intervals, the spacing between two adjacent protrusions 14 is L, and any two Ls are not equal. Since one of the end faces of the outer ring 1 is provided with a limiting groove 12, the structures of the two end faces of the outer ring 1 are different. By arranging a plurality of protrusions 14 along the circumferential direction on the outer wall of the outer ring 1, the spacing between two adjacent protrusions 14 is L, and any two Ls are not equal, the outer ring 1 of the one-way clutch is prevented from being assembled in the wrong direction when being assembled on the reducer; at the same time, the protrusions 14 can ensure that the position of the one-way clutch along the circumferential direction does not change after being assembled on the reducer.

[0045] Preferably, if Figure 1 As shown, a plurality of limiting grooves 12 are provided at intervals along the circumferential direction on the outer ring 1, and a plurality of limiting blocks 21 are provided at corresponding intervals along the circumferential direction on the inner ring 2.

[0046] In this embodiment, if Figure 1-5 As shown, ten limiting grooves 12 are provided at intervals along the circumference on the outer ring 1, ten limiting blocks 21 are provided at corresponding intervals along the circumference on the inner ring 2, six driving components are provided at intervals along the circumference of the inner ring 2, and four rolling support structures are provided between any two adjacent driving components.

[0047] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A one-way clutch, mounted on a transmission shaft, characterized in that: include: An outer ring (1), wherein the inner wall of the outer ring (1) is provided with a plurality of first limiting members (11) along the circumferential direction, and the end surface of the outer ring (1) is provided with a limiting groove (12); An inner ring (2), the outer ring (1) being sleeved on the inner ring (2), a limit block (21) being provided on an end surface of the inner ring (2), and the limit block (21) being inserted into the limit groove (12); A plurality of drive assemblies are arranged at intervals along the circumference of the inner ring (2), a plurality of rolling support structures are arranged between any two adjacent drive assemblies, a plurality of the first limiting members (11) are arranged in a one-to-one correspondence with the plurality of drive assemblies, the drive assemblies include a second limiting member (31) arranged on the inner ring (2), and a spring (32) arranged on the second limiting member (31), the two ends of the spring (32) are respectively pressed against the second limiting member (31) and the first limiting member (11), the rolling support structure includes a third limiting member (41) and a roller (42), the first limiting member (41) and the roller (42) are provided. The three limiting members (41) are used to fix the position of the roller (42); a plurality of fourth limiting members (13) are provided between any two adjacent first limiting members (11) on the outer ring (1); the plurality of fourth limiting members (13) are arranged in one-to-one correspondence with the plurality of third limiting members (41); the spring (32) can drive the second limiting member (31) to move along the first clockwise direction, so that the limiting block (21) is pressed against the groove wall of the limiting groove (12), and the roller (42) is pressed against the fourth limiting member (13) and the transmission shaft respectively along the radial direction of the inner ring (2); The spring (32) is a rectangular spring; The inner ring (2) is made of plastic material.

2. The one-way clutch according to claim 1, characterized in that: The second limiting member (31) is a groove, the groove is rectangular, and the two ends of the spring (32) are respectively pressed against the groove wall of the groove and the first limiting member (11).

3. The one-way clutch according to claim 2, characterized in that: The first limiting member (11) is a first wedge-shaped groove.

4. The one-way clutch according to claim 1, characterized in that: The third limiting member (41) comprises two limiting plates (411) which are arc-shaped and have openings facing each other, and the two limiting plates (411) form a receiving cavity, and the roller (42) is located in the receiving cavity.

5. The one-way clutch according to claim 4, characterized in that: The center angle corresponding to the limiting plate (411) is greater than 90° and less than 180°.

6. The one-way clutch according to claim 1, characterized in that: The fourth limiting member (13) is a second wedge-shaped groove, and the transmission shaft can drive the roller (42) to rotate along a second clockwise direction, and the first clockwise direction and the second clockwise direction are opposite directions.

7. The one-way clutch according to claim 1, characterized in that: Along the circumference of the outer ring (1), a plurality of protrusions (14) are provided at intervals on the outer peripheral surface of the outer ring (1), the spacing between two adjacent protrusions (14) is L, and any two Ls are not equal.

8. The one-way clutch according to claim 1, characterized in that: The third limiting member (41) is integrally formed with the inner ring (2).

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