CN202007840U - Tripod universal joint - Google Patents
Tripod universal joint Download PDFInfo
- Publication number
- CN202007840U CN202007840U CN2011201214048U CN201120121404U CN202007840U CN 202007840 U CN202007840 U CN 202007840U CN 2011201214048 U CN2011201214048 U CN 2011201214048U CN 201120121404 U CN201120121404 U CN 201120121404U CN 202007840 U CN202007840 U CN 202007840U
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- China
- Prior art keywords
- roller
- universal joint
- bearing pin
- internal trolley
- tripod universal
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Abstract
The utility model relates to a universal joint, in particular to a tripod universal joint. The universal joint well solves the problems that serious friction is caused at the inner part of the tripod universal joint in the prior art, the entire transmission efficiency is rather low and the angle between roller wheels and pin shafts is fixed. The technical scheme of the universal joint has the following key points: the universal joint comprises a three-pin frame with a spline at the middle part, wherein three pin shafts are uniformly arranged on the three-pin frame; the roller wheels are respectively sheathed on the pin shafts, and each pin shaft presents the shape of a spherical table; each roller wheel comprises an outer roller wheel, an inner roller wheel, roller pins and a limiting retainer ring; the inner roller wheel is arranged on each pin shaft, the outer roller wheel is sheathed outside the inner roller wheel, a plurality of roller pins are arranged between the outer roller wheel and the inner roller wheel, a clamping groove is arranged on the inner side wall of the lower part of the outer roller wheel, and the limiting retainer ring in close contact with the lower end of the inner roller wheel is connected in the clamping groove in a clamping way. The universal joint has the characteristics that little friction is caused at the inner part, the transmission efficiency is high and the swinging angle is adjustable.
Description
Technical field
The utility model relates to a kind of universal joint, and particularly a kind of internal friction is less, transmission efficiency is high, the adjustable tripod universal joint of work pivot angle.
Background technique
So-called universal joint refers to and utilizes ball-type to connect the mechanical structure that realizes that out-of-alignment power transmits, and is the previous mechanical part that is in daily use of order.Tripod universal joint belongs to common near constant velocity universal joint, tripod universal joint commonly used at present comprises spider, third-class office is provided with bearing pin on the spider, be arranged with roller on the bearing pin, have simple in structure, in light weight, low cost and other advantages, but the direct socket of its bearing pin and roller has certain disadvantages also on usability, bigger friction is particularly arranged between its bearing pin and roller, whole transmission efficiency is lower and roller and bearing pin fixed angle, can't regulate the work pivot angle.
Chinese patent notification number CN 2563353Y, July 30 2003 day for announcing, a kind of tripod universal joint is disclosed, it comprises spider, on spider, be provided with three oval axle journals that can assemble three no retainer through hole needle bearings, needle bearing has needle roller, ball, and utilizes needle roller back-up ring, Steel Cable Baffle Ring that spider and needle bearing is spacing, it is characterized in that being provided with shoulder with the needle bearing connecting part on spider.But in this technological scheme, axle journal and needle roller are that face contacts and defines ball and axle journal connection angle, very inconvenience during use; Secondly, the needle roller upper and lower surface of using at present has bigger friction when contacting with ball as the plane, and whole transmission efficiency is lower.
Summary of the invention
The purpose of this utility model is to solve that tripod universal joint inside has bigger friction in the above-mentioned prior art, whole transmission efficiency is lower and roller and bearing pin fixed angle, the problem of inconvenience very during use provides that a kind of internal friction is less, transmission efficiency is high, the adjustable tripod universal joint of work pivot angle.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of tripod universal joint, comprise that the middle part is provided with the spider of spline, evenly be provided with three bearing pins on the spider, all be arranged with roller on the described bearing pin, it is characterized in that: described bearing pin is the billiard table shape, described roller comprises outer roller, internal trolley, several needle rollers and spacing back-up ring, described internal trolley is set on the described bearing pin, described outer roller housing is located on the internal trolley, described needle roller is arranged between described outer roller and the described internal trolley, the madial wall of described outer roller bottom is provided with draw-in groove, be connected with spacing back-up ring in the described draw-in groove, described spacing back-up ring closely contacts with the lower end of internal trolley.Internal trolley is arranged with outer roller outward, be provided with several needle rollers between outer roller and the internal trolley, such structure makes and is rolling friction between outer roller and the internal trolley, friction factor is far smaller than the directly conventional way of sheathed roller on bearing pin that the standard tripod universal joint adopts, increased transmission efficiency, obviously reduce the disturbance of travelling and promptly vibrate, have bigger design flexible; Secondly, bearing pin is the billiard table shape, so bearing pin and roller are adjusted the work pivot angle in restricted portion, the line of the point of contact of roller and bearing pin all must pass the centre of sphere of billiard table, it is the diameter that the wire length of the point of contact of roller and bearing pin equals billiard table always, so when bearing pin and roller were adjusted the work pivot angle in restricted portion, bearing pin can be complementary with roller always; The 3rd, the madial wall of outer roller bottom is provided with draw-in groove, is connected with spacing back-up ring in the described draw-in groove, can guarantee that internal trolley, needle roller all can move in limited range and can not come off.
As preferably, the upper surface of described bearing pin is a sphere.The upper surface of bearing pin is sphere when the work of adjustment pivot angle, helps cooperatively interacting between bearing pin and the roller.
As preferably, the two ends of described needle roller are sphere.Needle roller is set like this is the some contact when contacting with the pad of outer roller or spacing ring washer, needle roller suffered existing needle roller of resistance ratios when rotating is far little, greatly reduces frictional force, has increased transmission efficiency.
As preferably, described spider integral body is the billiard table shape, and the joint between described bearing pin and described spider is an arc-shaped transition.Be provided with like this, when having guaranteed adjustment roller pivot angle, the lower end of internal trolley can cooperate with the arc indent of joint, has improved the adjustable extent of roller pivot angle.
As preferably, described outer roller integral body is drum type.The outer roller of She Zhiing in use can be integrated with the raceway shape of housing better mutually like this, improves whole conduction efficiency.
As preferably, fill up between described needle roller and the spacing back-up ring and be provided with pad.The breach that uses pad can fill up back-up ring prevents coming off of needle roller; The setting of spacing back-up ring helps the utility model mount preferably, can not occur the phenomenon that part such as needle roller comes off from bearing pin in the use.
As preferably, described internal trolley and described bearing pin transition fit.Setting had both guaranteed that roller can carry out angle adjustment like this, had guaranteed that simultaneously roller can keep this work pivot angle with bearing pin after adjusting angle is finished.
As preferably, described outer roller madial wall top is provided with limit baffle ring, and the internal diameter of described limit baffle ring is less than the external diameter of described internal trolley.The setting of limit baffle ring helps the utility model mount preferably, can not occur the phenomenon that part such as needle roller comes off from the roller upper end in the use.
As preferably, cavity between described internal trolley, the outer roller and described needle roller form Spielpassung, and the length of described needle roller equates with the height of described internal trolley.Be provided with like this and guaranteed that internal trolley and outer roller can carry out rolling friction, reduced frictional force, improved whole transmission efficiency.
As preferably, the height of described bearing pin is less than the height of described roller.The height of bearing pin reduces, and has both made things convenient for the needs of regulating the work pivot angle, has satisfied the demand that relative same specification standard tripod universal joint profile reduces again, makes the spatial arrangement applicability stronger.
The beneficial effects of the utility model are: the utility model internal friction is less, transmission efficiency is high, can adjust the work pivot angle of roller, and is easy to use, arranges that applicability is stronger.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model;
Fig. 2 is a kind of partial enlarged drawing of the utility model roller.
Among the figure: 1, outer roller, 2, internal trolley, 3, needle roller, 4, pad, 5, spacing back-up ring, 6, spider, 7, bearing pin, 8, the joint, 9, roller, 10, spacing shelves ring 11, draw-in groove.
Embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment:
A kind of tripod universal joint (referring to accompanying drawing 1, Fig. 2), comprise spider 6 and roller 9, spider 6 integral body are the billiard table shape, spider 6 is provided with spline, and spline connects the upper surface and the lower surface of spider, and the side of spider 6 is connected with three place's bearing pins 7 respectively, homogeneous phase is divided into 120 ° between three place's bearing pins 7, joint 8 between spider 6 and the bearing pin 7 is the arc-shaped transition of indent, and bearing pin 7 also is the billiard table shape, the bearing pin 7 outer rollers 9 that are arranged with; Roller 9 comprises outer roller 1, internal trolley 2, needle roller 3, pad 4 and spacing back-up ring 5, outer roller 1 integral body is cydariform, outer roller 1 is set in the outside of internal trolley 2, the top of outer roller 1 madial wall inwardly is provided with limit baffle ring 10, the bottom of outer roller 1 madial wall is provided with draw-in groove 11, be connected with spacing back-up ring 5 in the draw-in groove 11, internal trolley 2 and bearing pin 7 transition fit, internal trolley 2 integral body are cylindric, the external diameter of internal trolley 2 is greater than the internal diameter of limit baffle ring 10, the height of internal trolley 2 is greater than the height of bearing pin 7, gap between internal trolley 2 and the outer roller 1 is filled until filling up by tens of pieces of needle rollers 3, the top and bottom of needle roller 3 are spherical, the height of needle roller 3 equates that with the height of internal trolley 2 diameter of needle roller 3 equals the difference of external diameter with the internal diameter of outer roller 1 of internal trolley 2, and the lower end pad of needle roller 3 and internal trolley 2 is provided with pad 4, pad 4 closely contacts with spacing back-up ring 5, and spacing back-up ring 5 plays the effect of support limit.
Spline linked to each other with rotating shaft when the utility model used, regulate the angle of internal trolley and bearing pin then as required, because internal trolley and bearing pin are transition fit, and bearing pin is the billiard table shape, so when bearing pin and roller were adjusted the work pivot angle in restricted portion, bearing pin can form the transition coupling with roller, until reaching required angular orientation always, then with the roller in the utility model respectively with housing in raceway coupling install, promptly can be used as the tripod universal joint assembly after assembling is finished and use.
Above-described embodiment is a kind of preferable scheme of the present utility model, is not that the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technological scheme that claim puts down in writing.
Claims (10)
1. tripod universal joint, comprise that the middle part is provided with the spider of spline, evenly be provided with three bearing pins on the spider, all be arranged with roller on the described bearing pin, it is characterized in that: described bearing pin is the billiard table shape, described roller comprises outer roller, internal trolley, several needle rollers and spacing back-up ring, described internal trolley is set on the described bearing pin, described outer roller housing is located on the internal trolley, described needle roller is arranged between described outer roller and the described internal trolley, the madial wall of described outer roller bottom is provided with draw-in groove, is connected with spacing back-up ring in the described draw-in groove, and described spacing back-up ring closely contacts with the lower end of internal trolley.
2. tripod universal joint according to claim 1 is characterized in that: the upper surface of described bearing pin is a sphere.
3. tripod universal joint according to claim 1 is characterized in that: the two ends of described needle roller are sphere.
4. tripod universal joint according to claim 1 is characterized in that: described spider integral body is the billiard table shape, and the joint between described bearing pin and described spider is an arc-shaped transition.
5. according to claim 1 or 2 or 3 or 4 described tripod universal joints, it is characterized in that: described outer roller integral body is drum type.
6. tripod universal joint according to claim 1 is characterized in that: pad is provided with pad between described needle roller and the spacing back-up ring.
7. tripod universal joint according to claim 1 is characterized in that: described internal trolley and described bearing pin transition fit.
8. according to claim 1 or 2 or 3 or 4 or 6 or 7 described tripod universal joints, it is characterized in that: described outer roller madial wall top is provided with limit baffle ring, and the internal diameter of described limit baffle ring is less than the external diameter of described internal trolley.
9. according to claim 1 or 2 or 3 or 4 or 6 or 7 described tripod universal joints, it is characterized in that: cavity between described internal trolley, the outer roller and described needle roller form Spielpassung, and the length of described needle roller equates with the height of described internal trolley.
10. according to claim 1 or 2 or 3 or 4 or 6 or 7 described tripod universal joints, it is characterized in that: the height of described bearing pin is less than the height of described roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201214048U CN202007840U (en) | 2011-04-22 | 2011-04-22 | Tripod universal joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201214048U CN202007840U (en) | 2011-04-22 | 2011-04-22 | Tripod universal joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202007840U true CN202007840U (en) | 2011-10-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201214048U Expired - Fee Related CN202007840U (en) | 2011-04-22 | 2011-04-22 | Tripod universal joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202007840U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242775A (en) * | 2011-04-22 | 2011-11-16 | 万向钱潮股份有限公司 | Tripod universal joint |
| CN103967955A (en) * | 2013-02-05 | 2014-08-06 | 株式会社捷太格特 | Double-roller-type tripod constant-velocity joint |
| CN114458700A (en) * | 2022-01-19 | 2022-05-10 | 台州品佳汽配有限公司 | Movable three-ball pin and processing technology thereof |
| CN115111274A (en) * | 2022-08-29 | 2022-09-27 | 万向钱潮股份公司 | Tripod universal joint |
| CN115143197A (en) * | 2022-09-06 | 2022-10-04 | 万向钱潮股份公司 | Lightweight universal joint |
| US11655857B2 (en) | 2019-05-17 | 2023-05-23 | Toyota Jidosha Kabushiki Kaisha | Tripod constant-velocity joint |
-
2011
- 2011-04-22 CN CN2011201214048U patent/CN202007840U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242775A (en) * | 2011-04-22 | 2011-11-16 | 万向钱潮股份有限公司 | Tripod universal joint |
| CN103967955A (en) * | 2013-02-05 | 2014-08-06 | 株式会社捷太格特 | Double-roller-type tripod constant-velocity joint |
| CN103967955B (en) * | 2013-02-05 | 2016-06-15 | 株式会社捷太格特 | The three ball pin style constant speed universal joint of double; two roll shapes |
| US11655857B2 (en) | 2019-05-17 | 2023-05-23 | Toyota Jidosha Kabushiki Kaisha | Tripod constant-velocity joint |
| CN114458700A (en) * | 2022-01-19 | 2022-05-10 | 台州品佳汽配有限公司 | Movable three-ball pin and processing technology thereof |
| CN115111274A (en) * | 2022-08-29 | 2022-09-27 | 万向钱潮股份公司 | Tripod universal joint |
| CN115143197A (en) * | 2022-09-06 | 2022-10-04 | 万向钱潮股份公司 | Lightweight universal joint |
| CN115143197B (en) * | 2022-09-06 | 2022-12-02 | 万向钱潮股份公司 | Lightweight universal joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111012 Termination date: 20190422 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |