A one-way clutch

Abstract

This application discloses a one-way clutch, belonging to the field of clutches. It includes an outer ring and an inner ring, with the outer ring sleeved on the inner ring and coaxially arranged to rotate relative to it. A keyway is formed on the outer side wall of the outer ring, and a flat key is embedded within the keyway. Multiple circumferentially distributed trapezoidal seats are arranged in the gap between the inner wall of the outer ring and the outer wall of the inner ring. Multiple circumferentially distributed rollers are arranged on the inner ring, each roller having a spring assembly. The spring assembly includes a stop hole formed in the roller, with a stop slidably disposed within the stop hole. A spring is connected between the stop and the end wall of the stop hole, with one end of the spring extending out of the stop hole and pushing the trapezoidal seats on the inclined surface. The beneficial effect of this application is that it provides a one-way clutch. Through the provided stop and spring, when the trapezoidal seats compress and push the stop, the stop moves axially under the guidance of the stop hole and compresses the spring, thus axially compressing the spring and preventing bending of the spring due to compression, which would affect its service life.

Description

Technical Field

[0001] This application relates to the field of clutches, and more specifically, to a one-way clutch. Background Technology

[0002] A one-way clutch, also known as a one-way bearing, is a basic mechanical transmission component that allows power to be transmitted in only one direction (usually clockwise or counterclockwise). Its main function is to ensure that the connected component can only rotate in a specific direction, while being locked in the other direction. When the power source changes its rotation direction, the one-way clutch automatically disengages the driven component, thus preventing power transmission. For example, the authorization announcement number "CN107956817B" is named "Alien Wheel Type One-Way Clutch." Although it separates the alien wheel raceway surface from the spring stop block, allowing the raceway surface to be milled and ground arbitrarily without the constraint of the spring stop block, thus completely solving the problems of machining accuracy and surface quality of the raceway surface in existing structures, and can be processed using existing ordinary milling and grinding machines, resulting in high production efficiency, low processing cost, and easy mass production, the method of fixing it by compressing the extension mounting part of the spring with the alien wheel and the stop block can lead to uneven force on the spring, causing misalignment, reducing the spring's elasticity, and affecting its service life.

[0003] Therefore, a one-way clutch is needed to solve the above problems. Utility Model Content

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] To address the technical problems mentioned in the background section, some embodiments of this application provide a one-way clutch, comprising: an outer ring and an inner ring, the outer ring being sleeved on the inner ring and coaxially arranged to rotate relative to the inner ring, a keyway being provided on the outer side wall of the outer ring, a flat key being embedded in the keyway, a plurality of circumferentially distributed rollers being provided in the gap between the inner wall of the outer ring and the outer wall of the inner ring, a plurality of circumferentially distributed trapezoidal seats being provided on the inner ring, each trapezoidal seat having an elastic component, the elastic component including a stop hole opened on the roller, a stop being slidably disposed in the stop hole, a spring being connected between the stop and the end wall of the stop hole, one end of the stop extending out of the stop hole and pushing the roller on the inclined surface.

[0006] Furthermore, the trapezoidal seat has an inclined surface, the plane of which is parallel to the inner ring axis and at a certain distance from the inner ring axis. The inclined surface has one end away from the inner wall of the outer ring and the other end that gradually approaches the inner wall of the outer ring. Multiple trapezoidal seats are located on multiple inclined surfaces respectively, and the abutment hole is located on one side of the inclined surface. The abutment hole has an opening facing the side of the inclined surface.

[0007] Furthermore, a sliding head is slidably provided inside the stop, with one end of the spring abutting against the sliding head and the other end abutting against the inner wall of the stop hole. A screw is rotatably provided inside the stop, with the screw threaded into the sliding head. A wrench hole is provided on the side wall of the stop hole directly opposite the stop.

[0008] Furthermore, a guide flange is fixedly provided on the inclined surface, a limiting groove is provided on the trapezoidal seat, the guide flange is embedded in the limiting groove, side grooves are provided at both ends of the outer ring, and shaft ends are fixedly provided at both ends of the inner ring.

[0009] Furthermore, both ends of the outer ring are fitted with retaining rings that are fastened in the side grooves. The inner diameter of the retaining ring is smaller than the inner diameter of the inner ring and larger than the outer diameter of the shaft end. The two retaining rings are located at the front and rear ends of the trapezoidal seat, respectively. A retaining ring groove is provided on the shaft end, and a retaining ring is installed in the retaining ring groove to limit the position of the retaining ring.

[0010] Furthermore, an embedding groove, a connecting groove, and a side groove are provided on the inner wall of the abutment hole. The embedding groove extends axially along the abutment hole and is connected to the connecting groove. The connecting groove extends around the axis of the abutment hole and is connected to the side groove at one end. The side groove extends axially along the abutment hole. An embedding key is fixedly provided on the outer wall of the abutment. The embedding key is embedded in the embedding groove and is embedded in the side groove through the connecting groove. The embedding key and the side groove slide together.

[0011] Furthermore, a guide groove extending along the axis is provided on the inner wall of the pusher head, and a guide protrusion that is embedded in the guide groove and slides is fixedly connected to the sliding head.

[0012] The beneficial effects of this application are as follows: By setting the abutment and spring, when the roller squeezes and pushes the abutment, the abutment moves axially under the guidance of the abutment hole and squeezes the spring, so that the spring is axially squeezed, avoiding the bending of the spring due to compression and affecting its service life. By setting the two retaining rings, as well as the guide flange and the limiting groove, the roller is axially limited to prevent the roller from moving axially. At the same time, by setting the screw, when the spring fails after long-term use, by inserting a hexagonal wrench into the abutment hole through the wrench hole and turning the screw to drive the sliding head, the spring can push out the abutment, thus improving the service life of the spring. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0014] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0015] In the attached diagram: Figure 1 This is an overall schematic diagram according to one embodiment of the present application; Figure 2 yes Figure 1 A schematic diagram of the installation structure of the inner ring in the embodiment; Figure 3 yes Figure 1 A schematic diagram of the installation of the abutment in the embodiment; Figure 4 yes Figure 1 A schematic diagram of the structure of the butt hole in the embodiment; Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle; Figure 6 yes Figure 1 A schematic diagram of the roller installation in the embodiment; Figure 7 yes Figure 6 A magnified view of a portion of point B in the middle; Figure 8 yes Figure 1 A schematic diagram of the installation of the sliding head in the embodiment.

[0016] Figure label: 10. Outer ring; 11. Inner ring; 12. Retaining ring; 13. Snap ring; 14. Side groove; 15. Shaft end; 16. Snap ring groove; 17. Flat key; 18. Keyway; 19. Trapezoidal seat; 20. Roller; 21. Inclined surface; 22. Guide flange; 23. Limiting groove; 24. Abutment; 25. Abutment hole; 26. Elastic assembly; 27. Side groove; 28. Embedded groove; 29. ​​Connecting groove; 30. Guide groove; 31. Wrench hole; 32. Spring; 33. Embedded key; 34. Screw; 35. Sliding head; 36. Guide protrusion. Detailed Implementation

[0017] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0018] It should also be noted that, for ease of description, only the parts relevant to the application are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0019] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0020] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0021] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Reference Figure 1-8 A one-way clutch includes: an outer ring 10, an inner ring 11, a keyway 18, a flat key 17, a trapezoidal seat 19, a roller 20, and an inclined surface 21. The outer ring 10 is sleeved on the inner ring 11 and coaxially arranged to rotate relative to the inner ring 11. A keyway 18 is provided on the outer side wall of the outer ring 10, and a flat key 17 is embedded in the keyway 18. Similarly, a keyway is provided on the inner wall of the inner ring 11. The outer ring 10 and the inner ring 11 can rotate relative to each other. Multiple circumferentially distributed rollers 20 are arranged in the gap between the inner wall of the outer ring 10 and the outer wall of the inner ring 11. Multiple circumferentially distributed trapezoidal seats 19 are arranged on the inner ring 11. Each trapezoidal seat 19 has an inclined surface 21. The plane of the inclined surface 21 is parallel to the axis of the inner ring 11 and at a certain distance from the axis of the inner ring 11. The inclined surface 21 has one end away from the inner wall of the outer ring 10 and the other end gradually moving towards the inner wall of the outer ring 10. The multiple rollers 20 are located on the multiple inclined surfaces 21 respectively. When the inner ring 11 rotates clockwise relative to the outer ring 10, the rollers 20 do not limit the movement of the outer ring 10 and the inner ring 11. When the inner ring 11 rotates counterclockwise relative to the outer ring 10, the rollers 20 contact the inner wall of the outer ring 10 and the inclined surface 21 and lock into place, so that the outer ring 10 and the inner ring 11 rotate synchronously, realizing one-way clutching. The specific structure can be referred to as an existing one-way clutch.

[0023] The trapezoidal base 19 has an elastic component 26, which includes a butt hole 25 formed on the trapezoidal base 19. The butt hole 25 is located on one side of the inclined surface 21 and has an opening facing the inclined surface 21. A butt 24 is slidably disposed in the butt hole 25. A spring 32 is connected between the butt 24 and the end wall of the butt hole 25. One end of the spring 32 extends out of the butt hole 25 and pushes the roller 20 on the inclined surface 21. When the inner ring 11 rotates counterclockwise relative to the outer ring 10, the butt 24 pushes the roller 20 to abut against the inner wall of the outer ring 10 and the inclined surface 21 and locks it in place.

[0024] A sliding head 35 is slidably disposed within the abutment 24. One end of the spring 32 abuts against the sliding head 35, and the other end abuts against the inner wall of the abutment hole 25. A screw 34 is rotatably disposed within the abutment 24, and the screw 34 is threadedly engaged with the sliding head 35. A wrench hole 31 is provided on the side wall of the abutment hole 25 opposite to the abutment 24. When the spring 32 fails after prolonged use, a hex wrench is inserted into the abutment hole 25 through the wrench hole 31, and the screw 34 is turned to drive the sliding head 35, ensuring that the spring 32 can push out the abutment 24, thus improving the service life of the spring 32.

[0025] A guide flange 22 is fixedly provided on the inclined surface 21. A limiting groove 23 is provided on the roller 20, and the guide flange 22 is embedded in the limiting groove 23. Side grooves 14 are provided at both ends of the outer ring 10, and shaft ends 15 are fixedly provided at both ends of the inner ring 11. Retaining rings 12 are installed at both ends of the outer ring 10 and are fastened in the side grooves 14. The inner diameter of the retaining ring 12 is smaller than the inner diameter of the inner ring 11 and larger than the outer diameter of the shaft end 15. The two retaining rings 12 are located at the front and rear ends of the roller 20, respectively. A retaining ring groove 16 is provided on the shaft end 15, and a retaining ring 13 is installed in the retaining ring groove 16. The retaining ring 13 limits the retaining ring 12. Through the two retaining rings 12, the guide flange 22 and the limiting groove 23, the roller 20 is axially limited to prevent the roller 20 from moving axially.

[0026] An embedding groove 28, a connecting groove 29, and a side groove 27 are provided on the inner wall of the abutment hole 25. The embedding groove 28 extends axially along the abutment hole 25 and is connected to the connecting groove 29. The connecting groove 29 extends around the axis of the abutment hole 25, and one end of the connecting groove 29 is connected to the side groove 27. The side groove 27 extends axially along the abutment hole 25. An embedding key 33 is fixedly provided on the outer wall of the abutment 24. The embedding key 33 is embedded into the embedding groove 28 and then into the side groove 27 through the connecting groove 29. The embedding key 33 and the side groove 27 are in sliding engagement. When the abutment 24 is installed on the abutment hole 25, the embedding key 33 is embedded into the embedding groove 28 and then into the side groove 27 through the connecting groove 29, allowing the abutment 24 to move axially within the abutment hole 25.

[0027] The inner wall of the abutment 24 is provided with a guide groove 30 extending along the axis, and the sliding head 35 is fixedly connected with a guide protrusion 36 that slides within the guide groove 30. This allows the sliding head 35 to slide within the abutment 24, and the movement of the sliding head 35 is driven by rotating the screw 34.

[0028] Working process or usage method: 1. With the set abutment 24 and spring 32, when the roller 20 pushes the abutment 24, the abutment 24 moves axially under the guidance of the abutment hole 25 and squeezes the spring 32, so that the spring 32 is squeezed axially, avoiding the bending of the squeezed spring 32 and affecting its service life.

[0029] 2. The roller 20 is axially limited by the two retaining rings 12, the guide flange 22 and the limiting groove 23 to prevent the roller 20 from moving axially.

[0030] 3. Simultaneously, through the screw 34, when the spring 32 fails after prolonged use, a hex wrench is inserted into the butt hole 25 through the wrench hole 31, and the screw 34 is turned to drive the sliding head 35 to move, ensuring that the spring 32 can push out the butt 24, thereby improving the service life of the spring 32.

[0031] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the application involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described application concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A one-way clutch, characterized in that, include: An outer ring (10) and an inner ring (11) are provided. The outer ring (10) is fitted on the inner ring (11) and is coaxially arranged to rotate relative to the inner ring (11). A keyway (18) is provided on the outer side wall of the outer ring (10). A flat key (17) is embedded in the keyway (18). Multiple circumferentially distributed rollers (20) are provided in the gap between the inner wall of the outer ring (10) and the outer wall of the inner ring (11). Multiple circumferentially distributed trapezoidal seats (19) are provided on the inner ring (11). The trapezoidal seats (19) have elastic components (26). The elastic components (26) include abutment holes (25) opened on the trapezoidal seats (19). Abutment (24) is slidably provided in the abutment holes (25). A spring (32) is connected between the abutment (24) and the end wall of the abutment holes (25). One end of the abutment (24) extends out of the abutment holes (25) and pushes the rollers (20) on the inclined surface (21).

2. A one-way clutch according to claim 1, characterized in that: The roller (20) has an inclined surface (21). The plane of the inclined surface (21) is parallel to the axis of the inner ring (11) and is a certain distance from the axis of the inner ring (11). The inclined surface (21) has one end away from the inner wall of the outer ring (10) and the other end gradually approaching the inner wall of the outer ring (10). Multiple rollers (20) are located on multiple inclined surfaces (21). The abutment hole (25) is located on one side of the inclined surface (21). The abutment hole (25) has an opening facing the side of the inclined surface (21).

3. A one-way clutch according to claim 2, characterized in that: A sliding head (35) is slidably disposed inside the pusher (24). One end of the spring (32) abuts against the sliding head (35) and the other end abuts against the inner wall of the pusher hole (25). A screw (34) is rotatably disposed inside the pusher (24). The screw (34) is threadedly engaged with the sliding head (35). A wrench hole (31) is provided on the side wall of the pusher hole (25) facing the pusher (24).

4. A one-way clutch according to claim 3, characterized in that: A guide flange (22) is fixedly provided on the inclined surface (21), a limiting groove (23) is provided on the trapezoidal seat (19), the guide flange (22) is embedded in the limiting groove (23), side grooves (14) are provided at both ends of the outer ring (10), and shaft ends (15) are fixedly provided at both ends of the inner ring (11).

5. A one-way clutch according to claim 4, characterized in that: Both ends of the outer ring (10) are fitted with retaining rings (12) that are fastened in the side groove (14). The inner diameter of the retaining ring (12) is smaller than the inner diameter of the inner ring (11) and larger than the outer diameter of the shaft end (15). The two retaining rings (12) are located at the front and rear ends of the roller (20) respectively. A retaining ring groove (16) is provided on the shaft end (15). A retaining ring (13) is installed in the retaining ring groove (16). The retaining ring (13) limits the retaining ring (12).

6. A one-way clutch according to claim 5, characterized in that: An embedding groove (28), a connecting groove (29), and a side groove (27) are provided on the inner wall of the abutment hole (25). The embedding groove (28) extends axially along the abutment hole (25) and is connected to the connecting groove (29). The connecting groove (29) extends around the axis of the abutment hole (25). One end of the connecting groove (29) is connected to the side groove (27). The side groove (27) extends axially along the abutment hole (25). An embedding key (33) is fixedly provided on the outer wall of the abutment (24). The embedding key (33) is embedded in the embedding groove (28) and is embedded in the side groove (27) through the connecting groove (29). The embedding key (33) and the side groove (27) are in sliding fit.

7. A one-way clutch according to claim 6, characterized in that: The inner wall of the abutment (24) is provided with a guide groove (30) extending along the axis, and the sliding head (35) is fixedly connected with a guide protrusion (36) that slides into the guide groove (30).

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