CN212717876U - High-precision unidirectional belt pulley of automobile generator - Google Patents
High-precision unidirectional belt pulley of automobile generator Download PDFInfo
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- CN212717876U CN212717876U CN202021431726.8U CN202021431726U CN212717876U CN 212717876 U CN212717876 U CN 212717876U CN 202021431726 U CN202021431726 U CN 202021431726U CN 212717876 U CN212717876 U CN 212717876U
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Abstract
The utility model discloses a high-precision one-way belt pulley of an automobile generator, which comprises a one-way shaft core and a transmission wheel hub, wherein the other end of the one-way shaft core is connected with the transmission wheel hub through two ball bearings, the middle part of the one-way shaft core inserted into the hub part of the transmission wheel is provided with a circle of convex ring, a plurality of one-way grooves are arrayed on the convex ring, each one-way groove is an asymmetric arc-shaped groove, one end of each one-way groove is open, a pair of sliding grooves are arranged on the convex ring near the lower side of each one-way groove, each pair of sliding grooves are telescopically connected with an arc-shaped elastic plate, a roller is also inserted in each one-way groove and is abutted against the arc-shaped elastic plate, a ferrule is arranged in the internal interference fit of the transmission wheel hub, the ferrule is positioned at the periphery of the convex ring, the convex ring and the retaining ring are both kept in clearance with the ferrule, and the roller, the method also has the advantages of small assembly tolerance and high precision.
Description
Technical Field
The utility model relates to a high accuracy automobile power generation machine one-way belt pulley.
Background
The patent with publication number CN 208669997U discloses a high-precision one-way belt pulley of an automobile generator, which can achieve high precision by adopting a common processing method and is convenient for quality control in mass production. However, the structural design of the retainer is complex, the processing is difficult, and the inconvenience is brought to the assembly.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the not enough of above-mentioned prior art, provide a high accuracy automobile power generation machine one-way belt pulley.
The technical scheme of the utility model is that: a high-precision unidirectional belt pulley of an automobile generator comprises a unidirectional shaft core and a transmission hub, wherein one end of the unidirectional shaft core is connected with a rotating shaft of the automobile generator, the other end of the unidirectional shaft core is inserted into the transmission hub and is connected with the transmission hub through two ball bearings, a circle of convex ring is arranged in the middle of the part, inserted into the hub part of the transmission wheel, of the unidirectional shaft core, a plurality of unidirectional grooves are arrayed on the convex ring, each unidirectional groove is an asymmetric arc-shaped groove, one end of each unidirectional groove extends to the end part of the convex ring and is open, a pair of sliding grooves are further arranged on the convex ring close to the lower side of each unidirectional groove, each pair of sliding grooves are telescopically connected with an arc-shaped elastic plate, the arc-shaped elastic plate is connected to the sliding grooves and then protrudes below the lower side of the arc-shaped groove, after being stressed, the arc-shaped elastic plate can retract along the, the arc-shaped elastic plate can reset under the action of elasticity of the arc-shaped elastic plate, a roller is further inserted into each one-way groove, the roller is abutted to the arc-shaped elastic plate, a ferrule is arranged in the transmission hub in interference fit, the ferrule is positioned on the periphery of the convex ring, gaps are kept between the convex ring and the ferrule by the convex ring and the retainer ring, and the roller is abutted to the inner wall of the ferrule under the support of the arc-shaped elastic plate.
Furthermore, two ends of the transmission wheel hub are respectively provided with a bearing cover, and the two bearing covers are used for limiting the two ball bearings respectively.
Preferably, twelve unidirectional slots are provided.
Furthermore, the sliding groove is provided with a limiting end, two ends of the arc-shaped elastic plate are provided with spherical ends corresponding to the limiting end, and two ends of the arc-shaped elastic plate are inserted into the corresponding sliding groove and are limited by the limiting end.
Furthermore, one side of the convex ring is provided with a check ring, the check ring is arranged between the outer side of the open end of the one-way groove and the ball bearing, and the roller is limited in the one-way groove by the check ring and the two ends of the elastic arc-shaped plate are kept to be inserted into the corresponding sliding grooves.
The utility model has the advantages that: the utility model discloses a structure, assembly are all comparatively simple compared with prior art, still have the advantage that assembly tolerance is little, the precision is high.
Drawings
Fig. 1 is a transverse cross-sectional view of the present invention;
fig. 2 is a longitudinal sectional view of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
fig. 4 is a schematic structural view of the arc-shaped elastic plate of the present invention.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
Referring to fig. 1 and 2, the high-precision automotive generator one-way belt pulley comprises a one-way shaft core 1 and a transmission hub 2, wherein one end of the one-way shaft core 1 is connected with a rotating shaft of an automotive generator, the other end of the one-way shaft core 1 is inserted into the transmission hub 2 and is connected with the transmission hub 2 through two ball bearings 3, two ends of the transmission hub 2 are respectively provided with a bearing cover 4, and the two ball bearings 3 are respectively limited by the two bearing covers 4;
referring to fig. 2 and 3, a circle of convex ring 5 is arranged in the middle of the part of the unidirectional shaft core 1 inserted into the transmission hub 2, twelve unidirectional slots 6 are arrayed on the convex ring 5, each unidirectional slot 6 is an asymmetric arc-shaped slot, one end of each unidirectional slot 6 extends to the end of the convex ring 5 and is open, a pair of sliding slots 7 are further arranged on the convex ring 5 close to the lower side of each unidirectional slot 6, the sliding slots 7 are provided with limit ends, two ends of an arc-shaped elastic plate 8 are provided with spherical ends 9 (as shown in fig. 4) corresponding to the limit ends, and two ends of the arc-shaped elastic plate 8 are inserted into the corresponding sliding slots 7 and are limited by the limit ends;
it should be noted that, the arc-shaped elastic plate 8 is connected to the chute 7 and then protrudes below the lower side of the arc-shaped groove, after being stressed, the arc-shaped elastic plate 8 can retract along the chute 7, and when the applied force disappears, the arc-shaped elastic plate 8 can reset under the action of the elasticity of the arc-shaped elastic plate 8;
a roller 10 is also inserted into each one-way groove 6, and the roller 10 is abutted with the arc-shaped elastic plate 8;
a retainer ring 11 is arranged on one side of the convex ring 5, the retainer ring 11 is arranged between the outer side of the open end of the one-way groove 6 and the ball bearing 3, the retainer ring 11 limits the roller 10 in the one-way groove 6 and keeps two ends of the elastic arc-shaped plate 8 inserted in the corresponding sliding grooves 7;
a ferrule 12 is in interference fit in the driving hub 2, the ferrule 12 is positioned on the periphery of the convex ring 5, the convex ring 5 and the retainer ring 11 keep a gap with the ferrule 12, and the roller 10 is supported by the arc-shaped elastic plate 8 to abut against the inner wall of the ferrule 12.
The utility model discloses a theory of operation is: the transmission hub 2 is connected and driven by an automobile belt, when the one-way shaft core 1 is not moved and the ferrule 12 rotates clockwise, the roller 10 is positioned at the wider end of the inner side of an included angle formed by the one-way groove 6 and the ferrule 12, under the action of the arc-shaped elastic plate 8, the end surface of the roller 10 is abutted against the inner wall of the ferrule 12, the ferrule 12 rotates to drive the roller 10 to be forced to the narrower end of the outer side of the included angle, and a continuous meshing state is formed, so that continuous locking is realized; when the ferrule 12 rotates anticlockwise, the ferrule 12 drives the roller 10 to the wider end of the inner side of the included angle formed by the one-way groove 6 and the ferrule 12, at the moment, the roller 10 presses the arc-shaped elastic plate 8 to retract, only loose friction is generated between the ferrule 12 and the roller 10, a continuous separation state is formed, the continuous separation state slips for 360 degrees, and the one-way transmission effect is achieved through the method.
The utility model discloses an equipment is two-body to combine, namely one-way axle core 1 and transmission wheel hub 2 equipment combine, can reduce the error to guaranteed concentricity and yaw, the actual measurement tolerance is 0.05mm, the precision is higher; and simultaneously, compare prior art, the utility model discloses still have the equal comparatively simple advantage of structure, assembly, in the assembling process, install bearing cap 4, ball bearing 3, one-way axle core 1 in proper order, at 6 inboard arc elastic plates 8 of pegging graft in each one-way groove, fixed ring 12, peg graft roller 10 again, place retaining ring 11, installation ball bearing 3 and bearing cap 4 can.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a high accuracy automobile power generation machine one-way belt pulley, includes one-way axle core and transmission wheel hub, the one end of one-way axle core is connected with automobile power generation machine's rotation axis, the other end of one-way axle core inserts in the transmission wheel hub and is connected its characterized in that with transmission wheel hub through two ball bearing: the middle part of the one-way shaft core inserted into the hub part of the transmission wheel is provided with a circle of convex ring, a plurality of one-way grooves are arrayed on the convex ring, each one-way groove is an asymmetric arc groove, one end of each one-way groove extends to the end part of the convex ring and is in an open shape, the convex ring close to the lower side of each one-way groove is also provided with a pair of sliding grooves, each pair of sliding grooves is telescopically connected with an arc elastic plate, the arc elastic plate is connected with the sliding grooves and then protrudes below the lower side of the arc groove, after being stressed, the arc elastic plate can retract along the sliding grooves, when the applied force disappears, the arc elastic plate can reset under the action of self elasticity, a roller is also inserted in each one-way groove and is abutted against the arc elastic plate, a ferrule is in interference fit in the transmission wheel hub, the ferrule is positioned at the periphery of the convex ring, and the ferrule keep a gap with the ferrule, the roller is supported by the arc-shaped elastic plate and is abutted against the inner wall of the ferrule.
2. The high-precision automobile generator one-way belt pulley as claimed in claim 1, wherein: and two ends of the transmission wheel hub are respectively provided with a bearing cover, and the two bearing covers are used for limiting the two ball bearings respectively.
3. The high-precision automobile generator one-way belt pulley as claimed in claim 1, wherein: twelve unidirectional slots are provided.
4. The high-precision automobile generator one-way belt pulley as claimed in claim 1, wherein: the sliding groove is provided with a limiting end, two ends of the arc-shaped elastic plate are provided with spherical ends corresponding to the limiting end, and two ends of the arc-shaped elastic plate are inserted into the corresponding sliding grooves and are limited by the limiting end.
5. The high-precision automobile generator one-way belt pulley as claimed in claim 4, wherein: one side of the convex ring is provided with a check ring which is arranged between the outer side of the open end of the one-way groove and the ball bearing, and the check ring limits the roller in the one-way groove and keeps the two ends of the elastic arc-shaped plate inserted in the corresponding sliding grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021431726.8U CN212717876U (en) | 2020-07-20 | 2020-07-20 | High-precision unidirectional belt pulley of automobile generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021431726.8U CN212717876U (en) | 2020-07-20 | 2020-07-20 | High-precision unidirectional belt pulley of automobile generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212717876U true CN212717876U (en) | 2021-03-16 |
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ID=74907111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021431726.8U Active CN212717876U (en) | 2020-07-20 | 2020-07-20 | High-precision unidirectional belt pulley of automobile generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212717876U (en) |
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2020
- 2020-07-20 CN CN202021431726.8U patent/CN212717876U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A High Precision Unidirectional Belt Pulley for Automobile Generator Effective date of registration: 20221206 Granted publication date: 20210316 Pledgee: Longquan Branch of China Construction Bank Co.,Ltd. Pledgor: LONGQUAN ZHONGTAI AUTO AIR CONDITIONER Co.,Ltd. Registration number: Y2022330003504 |