CN211501387U - Three-ball pin universal joint without roller pin structure - Google Patents
Three-ball pin universal joint without roller pin structure Download PDFInfo
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- CN211501387U CN211501387U CN201921909459.8U CN201921909459U CN211501387U CN 211501387 U CN211501387 U CN 211501387U CN 201921909459 U CN201921909459 U CN 201921909459U CN 211501387 U CN211501387 U CN 211501387U
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- tripod
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Abstract
The utility model discloses a no bearing pin universal joint of bearing pin structure mainly includes three round pin framves, the ball ring, the cavity, the axle journal, three ball ring suit is on three axle journal of three round pin framves, the ball ring hole is equipped with the cavity with the axle journal cooperation department of three round pin framves, the cross sectional shape of axle journal is the R arc, diameter D1 of an orientation in axle journal cross-section is greater than another orientation diameter D2 promptly, the hole of ball ring is the cylinder hole, the ball ring internal diameter forms clearance fit with the longer diameter D1 of axle journal. The utility model adopts the matching of the inner hole cylindrical surface of the ball ring and the non-full cylindrical surface of the shaft neck of the tripod head, and the working area is provided with a lubricating area, thereby solving the problem of lubrication at the matching part and taking away the heat generated by the movement of the matching part, leading the lubrication to be sufficient and the operation to be flexible, and solving the problems of insufficient lubrication and inflexible rotation existing in the operation of the prior art; the three-pin-frame shaft neck is more beneficial to production and processing, can realize the replacement of soft turning by cold and warm precision forging, is directly ground or turned in a hard mode after heat treatment, and is more beneficial to assembly.
Description
Technical Field
The utility model relates to a field of universal joint, concretely relates to no bearing pin universal joint of kingpin structure.
Background
A novel tripod universal joint with the notice number of CN202646437U is provided and comprises a tripod body and ball rings, wherein three pin shafts are uniformly distributed on the tripod body, and the ball rings are rotatably sleeved on the pin shafts. The tripod universal joint of the scheme only comprises a tripod body and a ball ring, has a simple structure, can improve the assembly efficiency of workers, and reduces the production cost. Parts with weaker structural strength such as a rolling needle, a check ring, a clamp spring and the like are reduced, so that the size of the tripod universal joint can be smaller under the condition of the same strength requirement, the cost is reduced, and the market demand is met; and the tripod universal joint can bear higher strength and prolong the service life under the condition of the same volume. However, the three shaft pins and the ball rings of the tripod universal joint tripod body are matched with each other by the full-cylindrical surface and the full-cylindrical surface, so that the problems of insufficient lubrication and inflexible rotation exist during operation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough of prior art existence, and provide a no bearing pin universal joint.
The purpose of the utility model is accomplished through following technical scheme: the tripod universal joint without the rolling pin structure mainly comprises a tripod, ball rings, a cavity and a shaft neck, wherein the three ball rings are sleeved on the three shaft necks of the tripod, the matching part of inner holes of the ball rings and the shaft neck of the tripod is provided with the cavity, the section of the shaft neck is in an R arc shape, namely the diameter D1 of one direction of the section of the shaft neck is larger than the diameter D2 of the other direction, the inner holes of the ball rings are cylindrical holes, and the inner diameters of the ball rings and the longer diameter D1 of the shaft neck form clearance fit.
The cross-sectional shape of the journal includes an R-arc, a flat, and a bevel.
The shaft neck is provided with a guide section, the diameter D3 of the guide section is smaller than the diameter D1, and the transition position between the diameter D3 and the diameter D1 is a transition between a bevel angle and an arc R.
The cavity is a grease zone.
The utility model has the advantages that: the utility model adopts the matching of the inner hole cylindrical surface of the ball ring and the non-full cylindrical surface of the shaft neck of the tripod head, and the working area is provided with a lubricating area, thereby solving the problem of lubrication at the matching part and taking away the heat generated by the movement of the matching part, leading the lubrication to be sufficient and the operation to be flexible, and solving the problems of insufficient lubrication and inflexible rotation existing in the operation of the prior art; the three-pin-frame shaft neck is more beneficial to production and processing, can realize the replacement of soft turning by cold and warm precision forging, is directly ground or turned in a hard mode after heat treatment, and is more beneficial to assembly.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view a-a in fig. 1.
Fig. 3 is a schematic view of the structure of the tripod of the present invention.
Fig. 4 is a sectional view taken along line B-B in fig. 3.
Fig. 5 is a cross-sectional view taken along line C-C of fig. 3.
Fig. 6 is a schematic view of the guide section of the tripod according to the present invention.
Fig. 7 is a side view of the tripod according to the present invention.
Description of reference numerals: the three-pin rack comprises a three-pin rack 1, a ball ring 2, a cavity 3, a shaft neck 4, an arc R5 and a guide section 6.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
example (b): as shown in the attached drawings, the tripod universal joint without the rolling pin structure mainly comprises a tripod 1, ball rings 2, a cavity 3 and a shaft neck 4, wherein the three ball rings 2 are sleeved on the three shaft necks 4 of the tripod 1, the cavity 3 is arranged at the matching part of an inner hole of each ball ring 2 and the shaft neck 4 of the tripod 1, and the cavity 3 is a lubricating grease zone. Sufficient lubrication is provided for the ball ring 2 to engage the journal 4 of the tripod 1 while removing heat generated by the motion between the two. The cross-sectional shape of the journal 4 is R-arc, i.e. the diameter D1 of one direction of the cross-section of the journal 4 is larger than the diameter D2 of the other direction, and the cross-sectional shape of the journal 4 includes R-arc, plane and inclined plane. Provision is made for a lubricating cavity 3 to be formed between the shaft journal 4 and the inner bore of the ball ring 2. The inner bore of the ball ring 2 is a cylindrical bore, and the inner diameter of the ball ring 2 forms a clearance fit with the longer diameter D1 of the shaft journal 4. The journal 4 is provided with a guide section 6, the diameter D3 of the guide section 6 is smaller than the diameter D1, and the transition between the diameter D3 and the diameter D1 is a bevel angle and is transited to an arc R5. This facilitates the assembly guidance of the ball 2 and the tripod 1.
It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.
Claims (4)
1. The utility model provides a no bearing pin universal joint of bearing pin structure which characterized in that: mainly include tripod (1), ball ring (2), cavity (3), axle journal (4), three ball ring (2) suit is on three axle journal (4) of tripod (1), the axle journal (4) cooperation department of ball ring (2) hole and tripod (1) is equipped with cavity (3), the cross sectional shape of axle journal (4) is the R arc, diameter D1 of an orientation of axle journal (4) cross-section is greater than another orientation diameter D2 promptly, the hole of ball ring (2) is the cylinder hole, ball ring (2) internal diameter forms clearance fit with the longer diameter D1 of axle journal (4).
2. The needle-free tripod joint of claim 1, wherein: the cross-sectional shape of the journal (4) comprises an R arc, a plane and an inclined plane.
3. The needle-free structure tripod joint according to claim 1 or 2, wherein: the journal (4) is provided with a guide section (6), the diameter D3 of the guide section (6) is smaller than the diameter D1, and the transition position between the diameter D3 and the diameter D1 is a transition between a bevel angle and an arc R (5).
4. The needle-free tripod joint of claim 1, wherein: the cavity (3) is a lubricating grease area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921909459.8U CN211501387U (en) | 2019-11-07 | 2019-11-07 | Three-ball pin universal joint without roller pin structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921909459.8U CN211501387U (en) | 2019-11-07 | 2019-11-07 | Three-ball pin universal joint without roller pin structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211501387U true CN211501387U (en) | 2020-09-15 |
Family
ID=72408779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921909459.8U Active CN211501387U (en) | 2019-11-07 | 2019-11-07 | Three-ball pin universal joint without roller pin structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211501387U (en) |
-
2019
- 2019-11-07 CN CN201921909459.8U patent/CN211501387U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 311215 Wanxiang Road, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Wanxiang Qianchao Co.,Ltd. Patentee after: WANXIANG GROUP Co.,Ltd. Address before: No.1 Wanxiang Road, Xiaoshan Economic and Technological Development Zone, Hangzhou City, Zhejiang Province Patentee before: WANXIANG QIANCHAO Co.,Ltd. Patentee before: WANXIANG GROUP Co.,Ltd. |