CN220302589U - Multi-roller thin-wall clutch - Google Patents
Multi-roller thin-wall clutch Download PDFInfo
- Publication number
- CN220302589U CN220302589U CN202320993270.1U CN202320993270U CN220302589U CN 220302589 U CN220302589 U CN 220302589U CN 202320993270 U CN202320993270 U CN 202320993270U CN 220302589 U CN220302589 U CN 220302589U
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- China
- Prior art keywords
- outer ring
- retainer
- roller
- cam grooves
- along
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000003754 machining Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000009957 hemming Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Mechanical Operated Clutches (AREA)
Abstract
The utility model belongs to the technical field of clutches, and particularly relates to a multi-roller thin-wall clutch, which comprises an outer ring and a retainer, wherein the outer ring comprises a seat ring and an outer ring which are assembled in an interference manner, the outer ring is formed by stamping, the inner peripheral wall of the outer ring is provided with a plurality of cam grooves along the circumferential direction of the outer ring, the retainer is provided with a plurality of windows along the circumferential direction of the retainer, each window is internally provided with a roller, and the rollers correspond to the cam grooves one by one; according to the utility model, more cam grooves are formed by utilizing the outer ring formed by stamping so as to accommodate more rollers, so that the torque capacity can be greatly improved, the outer ring and the seat ring which are assembled in an interference manner are simpler in structure, lower in production cost and more stable and reliable in product performance.
Description
Technical Field
The utility model belongs to the technical field of clutches, and particularly relates to a multi-roller thin-wall clutch.
Background
The one-way clutch used for the motorcycle starting motor comprises an outer ring and a retainer, wherein a motor shaft is positioned on the inner side of the retainer, a plurality of windows are formed in the retainer for mounting rollers, a plurality of cam grooves are formed in the inner peripheral wall of the outer ring, the cam grooves correspond to the rollers one by one, the number of the rollers is positively correlated with the torque capacity, however, the existing outer ring is generally of an integral structure, machining forming is usually adopted, the number of the cam grooves formed in a machining mode is limited, and the torque capacity is limited.
Disclosure of Invention
The utility model aims to solve the technical problems that: in order to solve the problem that the torque capacity is limited due to the fact that an outer ring of a one-way clutch is generally of an integral structure and is generally formed by machining, and the number of cam grooves formed by machining is limited, the multi-roller thin-wall clutch is provided.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a multi-roller thin wall clutch, includes outer loop and holder, the outer loop includes the seat circle and the outer lane of interference fit, and the seat circle is smooth ring structure, outer lane stamping forming, and its inner peripheral wall has offered a plurality of cam grooves along its circumferencial direction, and stamping mode can form more cam grooves to hold the bearing torque that more quantity roller (more than 6) improved the clutch, under the same design space, its torque capacity is conventional roller clutch 2-3 times, and the outer lane wall thickness is less for thin wall structure, thereby transmission torque that can be better. The retainer is provided with a plurality of windows along the circumferential direction of the retainer, each window is internally provided with a roller, and the rollers correspond to the cam grooves one by one;
the outer ring is pressed into the seat ring in an interference manner, positive pressure is generated on the seat ring, sliding friction force generated by the assembly interference magnitude of the outer ring and the seat ring is larger than circumferential force generated when actual maximum allowable torque is loaded to avoid the outer ring and the seat ring from slipping, when the clutch starts to work, the outer ring is subjected to extrusion force of the roller, the extrusion force acts on the seat ring outwards, the positive pressure is further increased, and the anti-slip capacity is increased. In addition, the retainer is extruded by the seat ring and the outer ring which are assembled in an interference mode, so that the width dimension of the bottom of the window of the retainer is reduced from 1-1.1 times of the diameter of the roller before assembly to 3/4-4/5 of the diameter of the roller after assembly, and the roller is prevented from falling in a free state after the roller is assembled.
According to the technical scheme, more cam grooves are formed by utilizing the outer ring formed by stamping under the same design space so as to accommodate more rollers, so that the torque capacity can be greatly improved, the original integral outer ring is optimized into the outer ring and the seat ring which are assembled in an interference manner, the structure is simpler, the production cost is lower, and the product performance is more stable and reliable.
Further, the retainer is provided with a plurality of cross beams along the circumferential direction of the retainer, two adjacent cross beams form the windows, and each window is internally provided with a reinforcing beam which divides the window into a roller groove and a separation groove, so that the integral strength of the retainer is enhanced, and the design difficulty of a retainer die is reduced.
Further, a spring piece for pushing the roller from the large end to the small end of the cam groove is arranged on each cross beam, the spring piece comprises a mounting portion clamped on the cross beam, two arc pushing portions extend from two ends of the mounting portion, the two pushing portions are arranged in a crossed mode, V-shaped buckling sections are bent and formed at two end portions of the mounting portion and are clamped with two end portions of the cross beam, and an assembly angle formed by the buckling sections is 125-155 degrees.
Furthermore, the cross beam is provided with a step surface matched with the mounting part, namely a gap is reserved between the upper half part of the cross beam and the two panels of the retainer for mounting the buckle section.
Furthermore, one end of the outer ring along the axial direction of the outer ring is provided with a curled edge, and the curled edge can axially limit the retainer.
The utility model has the beneficial effects that: according to the utility model, more cam grooves are formed by utilizing the outer ring formed by stamping so as to accommodate more rollers, so that the torque capacity can be greatly improved, the outer ring and the seat ring which are assembled in an interference manner are simpler in structure, lower in production cost and more stable and reliable in product performance.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a cross-sectional view of the present utility model from a first perspective;
FIG. 2 is a cross-sectional view of a second perspective of the present utility model;
FIG. 3 is a schematic structural view of a cage;
FIG. 4 is an enlarged partial view of portion A of FIG. 3;
in the figure:
1. a seat ring; 2. an outer ring; 201. cam grooves; 202. hemming; 3. a retainer; 301. a window; 3011. a roller groove; 3012. an isolation groove; 302. a cross beam; 3021. a step surface; 303. a stiffening beam; 4. a roller; 5. a spring piece; 501. a mounting part; 5011. a snap-fit section; 502. a pressing part; 6. and a motor shaft.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
Embodiment one:
as shown in fig. 1-4, the utility model is a multi-roller thin-wall clutch, which comprises an outer ring and a retainer 3, wherein a motor shaft 6 is positioned at the inner side of the retainer 3, the outer ring comprises a seat ring 1 and an outer ring 2 which are assembled in an interference way, the seat ring 1 is of a smooth circular ring structure, the outer ring 2 is stamped and formed, one end of the outer ring 2 along the axial direction of the outer ring is provided with a curled edge 202, the curled edge 202 can axially limit the retainer 3, the inner peripheral wall of the outer ring 2 is provided with a plurality of cam grooves 201 along the circumferential direction of the outer ring, the stamping mode can form a plurality of cam grooves 201, so that a larger number of rollers 4 are accommodated to improve the bearing torque of the clutch, the torque capacity of the clutch is 2-3 times that of a conventional roller clutch under the same design space, and the outer ring 2 has a smaller wall thickness of a thin-wall structure, so that the torque can be transmitted better.
The retainer 3 is provided with a plurality of cross beams 302 along the circumferential direction, two adjacent cross beams 302 are provided with windows 301, each window 301 is internally provided with a roller 4, the plurality of rollers 4 are in one-to-one correspondence with the plurality of cam grooves 201, and the tangential angle between the tangential line of the contact point of the roller 4 and the cam groove 201 and the tangential line of the contact point of the roller 4 and the motor shaft 6 is 5-8 degrees. Each window 301 is internally provided with a reinforcing beam 303, the reinforcing beam 303 divides the window 301 into a roller groove 3011 and a separation groove 3012, and the reinforcing beam 303 not only enhances the overall strength of the retainer 3, but also reduces the design difficulty of the mold of the retainer 3.
The outer ring 2 is pressed into the seat ring 1 in an interference manner, positive pressure is generated on the seat ring 1, and the sliding friction force generated by the assembly interference of the outer ring 2 and the seat ring 1 is larger than the circumferential force when the actual maximum allowable torque is loaded to avoid the slipping of the outer ring 2 and the seat ring 1; when the clutch starts to work, the outer ring 2 is pressed by the rollers 4, the pressing force acts on the seat ring 1 outwards, positive pressure is further increased, and anti-slip capacity is improved. In addition, the retainer 3 is extruded by the seat ring 1 and the outer ring 2 which are assembled in an interference manner, so that the width dimension of the bottom of the window 301 of the retainer 3 is reduced from 1 to 1.1 times of the diameter of the roller 4 before assembly to 3/4 to 4/5 of the diameter of the roller 4 after assembly, and the roller 4 is ensured not to fall off in a free state after the roller 4 is assembled.
Each cross beam 302 is provided with a spring piece 5 for pushing the roller 4 from the large end to the small end of the cam groove 201, the spring piece 5 comprises a mounting portion 501 clamped on the cross beam 302, two ends of the mounting portion 501 are provided with arc pushing portions 502 in an extending mode, the two pushing portions 502 are arranged in a crossing mode, two end portions of the mounting portion 501 are bent to form V-shaped buckling sections 5011 clamped with two end portions of the cross beam 302, an assembly angle formed by the buckling sections 5011 is 125-155 degrees, and the cross beam 302 is provided with a step surface 3021 matched with the mounting portion 501, namely a gap is reserved between the upper half portion of the cross beam 302 and two panels of the retainer 3 for mounting the buckling sections 5011.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (5)
1. A multi-roller thin-wall clutch, characterized in that: the novel bearing comprises an outer ring and a retainer (3), wherein the outer ring comprises a seat ring (1) and an outer ring (2) which are assembled in an interference mode, the outer ring (2) is formed in a stamping mode, a plurality of cam grooves (201) are formed in the inner peripheral wall of the outer ring along the circumferential direction of the outer ring, a plurality of windows (301) are formed in the retainer (3) along the circumferential direction of the retainer, a roller (4) is arranged in each window (301), and the plurality of rollers (4) correspond to the plurality of cam grooves (201) one by one.
2. A multiple roller thin wall clutch according to claim 1, wherein: the retainer (3) is provided with a plurality of cross beams (302) along the circumferential direction of the retainer, two adjacent cross beams (302) form the windows (301), each window (301) is internally provided with a reinforcing beam (303), and the reinforcing beams (303) divide the windows (301) into roller grooves (3011) and isolation grooves (3012).
3. A multiple roller thin wall clutch according to claim 2, wherein: each cross beam (302) is provided with a spring piece (5) for pushing the roller (4) from the large end to the small end of the cam groove (201), the spring piece (5) comprises a mounting part (501) clamped on the cross beam (302), two ends of the mounting part (501) are respectively provided with an arc pushing part (502), and two end parts of the mounting part (501) are bent to form a clamping section (5011) clamped with two end parts of the cross beam (302).
4. A multiple roller thin wall clutch according to claim 3, wherein: the cross beam (302) is provided with a step surface (3021) which is matched with the mounting portion (501).
5. A multiple roller thin wall clutch according to claim 1, wherein: one end of the outer ring (2) along the axial direction is provided with a curled edge (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320993270.1U CN220302589U (en) | 2023-04-27 | 2023-04-27 | Multi-roller thin-wall clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320993270.1U CN220302589U (en) | 2023-04-27 | 2023-04-27 | Multi-roller thin-wall clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220302589U true CN220302589U (en) | 2024-01-05 |
Family
ID=89348191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320993270.1U Active CN220302589U (en) | 2023-04-27 | 2023-04-27 | Multi-roller thin-wall clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220302589U (en) |
-
2023
- 2023-04-27 CN CN202320993270.1U patent/CN220302589U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |