CN212868176U - Universal bearing - Google Patents
Universal bearing Download PDFInfo
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- CN212868176U CN212868176U CN202021522869.XU CN202021522869U CN212868176U CN 212868176 U CN212868176 U CN 212868176U CN 202021522869 U CN202021522869 U CN 202021522869U CN 212868176 U CN212868176 U CN 212868176U
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- 238000005096 rolling process Methods 0.000 claims abstract description 68
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 210000003141 lower extremity Anatomy 0.000 description 2
- 210000001364 upper extremity Anatomy 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model relates to a mechanical parts, in particular to universal bearing, include: first bearing body, second bearing body, rolling element and annular supporting seat, first bearing body includes: the first outer side face, a first inner side face opposite to the first outer side face, an annular upper edge part connecting the first outer side face and the first inner side face, and an annular lower edge part connecting the first outer side face and the first inner side face, wherein the annular upper edge part and the annular lower edge part are both protruded out of the first inner side face; the rolling body is arranged in the first bearing body; the second bearing body part is inserted into the first bearing body and is connected with the rolling body, and the outer diameter of the second bearing body is smaller than the inner diameter of the annular upper edge part; the annular supporting seat is arranged in the first bearing body, an annular channel for positioning the rolling body is formed on the inner side of the annular supporting seat, and the rolling body can freely roll in the annular channel. Compared with the prior art, the shaft can simultaneously have a plurality of degrees of freedom when rotating, and the rotating requirements of the shaft under different deflection angles can be met.
Description
Technical Field
The embodiment of the utility model provides a mechanical parts, in particular to universal bearing.
Background
The bearing is used as a conventional mechanical part, and has the functions of positioning the shaft while rotating the shaft, ensuring the concentricity of the shaft during rotation and avoiding the abrasion caused by the friction between the shaft and the insertion groove. Therefore, bearings are often used in the shaft-to-bore fit. Moreover, because the existing bearing basically comprises an inner bearing body, an outer bearing body and a rolling component arranged between the inner bearing body and the outer bearing body, the rolling component generally comprises a retainer and a plurality of balls arranged on the retainer, and after the bearing is assembled, the inner bearing body and the outer bearing body can rotate relative to each other by virtue of the rolling component.
However, because the existing bearings generally only can realize the rotation of the shaft in one-dimensional direction, that is, the shaft rotates relative to the shaft hole, in some special mechanical fields, for example, joints of robots or manipulators, because the joints need to be ensured to have multiple degrees of freedom, but because the structure of the bearings limits the degrees of freedom of the manipulator, multiple degrees of freedom at the joints of the manipulator can be realized only by arranging multiple motors and multiple swing arms at one joint part, which undoubtedly affects the volume and weight of the manipulator. For another example, when an automobile is used to connect a hub and a transmission shaft of a transmission, the shaft is required to have multiple degrees of freedom during transmission so that the shaft can meet the requirement of running on a bumpy road under different offset angles.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide an universal bearing can satisfy the rotatory requirement of axle under a plurality of degrees of freedom.
In order to solve the above technical problem, an embodiment of the utility model provides an universal bearing, include:
a first bearing body, the first bearing body comprising: the first outer side face, a first inner side face opposite to the first outer side face, an annular upper edge part connecting the first outer side face and the first inner side face, and an annular lower edge part connecting the first outer side face and the first inner side face, wherein the annular upper edge part and the annular lower edge part are both protruded out of the first inner side face;
the rolling body is arranged in the outer bearing body;
a second bearing body partially inserted into the first bearing body and connected with the rolling body; the outer diameter of the second bearing body is smaller than the inner diameter of the annular upper edge part;
the annular supporting seat is arranged in the first bearing body; and an annular channel for positioning the rolling body is formed on the inner side of the annular supporting seat, and the rolling body can freely roll in the annular channel.
Compared with the prior art, because universal bearing includes: the bearing comprises a first bearing body, a rolling body, a second bearing body and an annular supporting seat. And the annular supporting seat is arranged in the first bearing body, an annular channel for positioning the rolling body is formed on the inner side of the annular supporting seat, the rolling body can roll freely in the annular channel, the second bearing body is partially inserted into the first bearing body and is fixedly connected with the rolling body, and the outer diameter of the second bearing body is smaller than the inner diameter of the annular upper edge part. Therefore, after the second bearing body is connected with the shaft, the shaft can have a plurality of degrees of freedom simultaneously when rotating through rolling of the rolling body, and the rotating requirements of the shaft under different deflection angles can be met.
In addition, the surface of the annular channel is spherical.
In addition, the spherical surface abuts against the rolling element and is in sliding fit with the rolling element.
In addition, the annular supporting seat is provided with a plurality of accommodating grooves corresponding to the spherical surface, and balls are respectively arranged in the accommodating grooves; the ball in each accommodating groove is partially exposed outside the notch of the accommodating groove and is abutted against the rolling body.
In addition, each accommodating groove is internally provided with a rebound assembly for bearing the ball; arbitrary the resilience subassembly in the storage tank all includes: the support plate is used for supporting the balls, and the elastic element is arranged between the support plate and the groove bottom of the accommodating groove and the support plate and is connected with the groove bottom.
In addition, one side of the support plate, which is opposite to the ball, is an inwards concave cambered surface matched with the ball.
In addition, the rebound direction of each elastic element points to the axle center of the rolling body.
In addition, one end of the groove wall of each accommodating groove, which is positioned at the notch, is provided with a part which horizontally protrudes towards the direction in the groove of the accommodating groove to form an annular limiting part which is propped against the ball.
In addition, one side of the annular limiting part, which is propped against the ball, is an annular concave cambered surface.
In addition, the universal bearing further includes: a third bearing body disposed coaxially and oppositely to the second bearing body;
the third bearing body part is inserted into the first bearing body and is connected with the rolling body; the outer diameter of the third bearing body is smaller than the inner diameter of the annular lower edge part.
Drawings
Fig. 1 is a schematic structural view of a universal bearing according to a first embodiment of the present invention;
FIG. 2 is a schematic structural view of the universal bearing according to the first embodiment of the present invention when balls are distributed on the spherical surface of the supporting seat;
FIG. 3 is a schematic view of the supporting seat and the rolling body according to the first embodiment of the present invention;
FIG. 4 is an enlarged view of a portion A of FIG. 3;
fig. 5 is a schematic structural view of a universal bearing according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the claims of the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.
A first embodiment of the present invention relates to a universal bearing, as shown in fig. 1, including: the bearing comprises a first bearing body 1, a second bearing body 2, a rolling body 3 and an annular supporting seat 4.
Wherein, as shown in fig. 1, the first bearing body 1 includes: first lateral surface 11, the relative first medial surface 12 of first lateral surface 11, the annular upper limb 13 of connecting first lateral surface 11 and first medial surface 12, the annular lower limb 14 of connecting first lateral surface 11 and first medial surface 12, annular upper limb 13 and annular lower limb 14 all protrusion in first medial surface 12.
Meanwhile, in the present embodiment, as shown in fig. 1, the rolling elements 3 are provided in the first bearing body 1. The second bearing body 2 is partially inserted into the first bearing body 1 and connected to the rolling elements 3. In the present embodiment, the outer diameter of the second bearing body 2 is smaller than the inner diameter of the annular upper edge portion 13.
In the present embodiment, as shown in fig. 1, the annular support seat 4 is provided in the first bearing body 1. The inside of the annular support seat 4 forms an annular channel 41 for positioning the rolling elements 3, and the rolling elements 3 can freely roll in the annular channel 41.
As can be seen from the above, the universal bearing includes: the bearing comprises a first bearing body 1, a rolling body 3, a second bearing body 2 and an annular supporting seat 4. The annular support seat 4 is disposed in the first bearing body 1, an annular channel 41 for positioning the rolling element 3 is formed inside the annular support seat 4, the rolling element 3 can freely roll in the annular channel 41, the second bearing body 2 is partially inserted into the first bearing body 1 and is fixedly connected with the rolling element 3, and the outer diameter of the second bearing body 2 is smaller than the inner diameter of the annular upper edge 13. Therefore, after the second bearing body 2 is connected with the shaft, the shaft can have a plurality of degrees of freedom simultaneously when rotating through the rolling of the rolling bodies 3, and the rotating requirements of the shaft under different deflection angles can be met.
Specifically, in the present embodiment, as shown in fig. 1, the surface of the annular channel 41 is a spherical surface 42. Meanwhile, the spherical surface can be abutted against the rolling body 3 and is in sliding fit with the rolling body 3. For example, the spherical surface 42 may be a smooth surface, and the contact between the smooth surface and the rolling element 3 may reduce the friction force generated when the rolling element 3 contacts the spherical surface 42 during rolling, so that the rolling element 3 rolls more smoothly.
Of course, as an alternative, as shown in fig. 3, a plurality of receiving grooves 43 may be distributed on the spherical surface 42 of the annular supporting seat 4 corresponding to the annular channel 41, and each receiving groove 43 is provided with a ball 5 therein. As shown in fig. 4, the balls 5 in each receiving groove 43 are partially exposed to the outside of the notch 432 of the receiving groove 43 and abut against the rolling elements 3. As a result, it is apparent that the rolling performance of the rolling element 3 is further improved by the contact of the plurality of balls 5 with the rolling element 3, and the balls 5 can roll relative to the rolling element 3 by the contact with the rolling element 3 when the rolling element 3 rolls.
However, as shown in fig. 3 and 4, it is preferable that a rebound unit 6 for supporting the ball 5 is further provided in each of the accommodation grooves 43. Rebound assembly 6 within any of receiving slots 43 comprises: the supporting plate 61 for supporting the rolling balls 5, the elastic element 62 arranged between the groove bottom 433 of the accommodating groove 43 and the supporting plate 61, the elastic element 62 is connected with the groove bottom 433, and the elastic element 62 adopted in the present embodiment is a spring, so that the supporting plate 61 in each accommodating groove 43 can always exert an acting force on the rolling balls 5 under the action of the elastic element 62, and it is ensured that each rolling ball 4 can always cling to the rolling body 3, so that the rolling body 3 can always be in the central position in the accommodating groove 43, and it is ensured that the rolling body 3 cannot deviate when rolling, thereby further improving the rolling performance of the rolling body 3.
In addition, in the present embodiment, a side of the support plate 61 opposite to the ball 5 is a concave arc surface (not shown) engaged with the ball 5, and the concave arc surface on each support plate 61 can further play a role in positioning the ball 5.
In addition, it should be noted that, in order to prevent the ball 5 in each accommodating groove 43 from falling out of the accommodating groove 43, as shown in fig. 4, a portion of the groove wall 431 of each accommodating groove 43, which is located at one end of the notch 432, horizontally protrudes toward the groove inner direction of the accommodating groove 43, so as to form an annular stopper 434 for abutting against the ball 5. Therefore, the position of the ball 5 in the accommodating groove 43 can be limited by the annular limiting portion 434, and the ball 5 is prevented from falling out of the accommodating groove 43. In addition, in order to enable the annular limiting portion 434 to better abut against the ball 5, one side of the annular limiting portion 434 abutting against the ball 5 is an annular concave arc surface (not marked in the figure), so that the abutting performance of the ball 5 is improved, meanwhile, the rolling performance of the ball 5 can be further improved, and unnecessary abrasion of the ball 5 during rolling is avoided.
A second embodiment of the present invention relates to a universal bearing, and is a further improvement of the first embodiment, and is mainly improved in that, as shown in fig. 5, the universal bearing of the present embodiment further includes: and a third bearing body 7 disposed coaxially and oppositely to the second bearing body 2.
As shown in fig. 5, the third bearing body 7 is partially inserted into the first bearing body 1 and is connected and fixed to the rolling elements 3. The outer diameter of the third bearing body 7 is smaller than the inner diameter of the annular lower edge portion 14.
Therefore, it is easy to see that the third bearing body 7 can be used for connecting and fixing the other shaft, so that the use requirements of more scenes are met.
It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.
Claims (10)
1. A universal bearing, comprising:
a first bearing body, the first bearing body comprising: the first outer side face, a first inner side face opposite to the first outer side face, an annular upper edge part connecting the first outer side face and the first inner side face, and an annular lower edge part connecting the first outer side face and the first inner side face, wherein the annular upper edge part and the annular lower edge part are both protruded out of the first inner side face;
a rolling body provided in the first bearing body;
a second bearing body partially inserted into the first bearing body and connected with the rolling body; the outer diameter of the second bearing body is smaller than the inner diameter of the annular upper edge part;
the annular supporting seat is arranged in the first bearing body; and an annular channel for positioning the rolling body is formed on the inner side of the annular supporting seat, and the rolling body can freely roll in the annular channel.
2. The universal bearing according to claim 1, wherein the surface of said annular channel is spherical.
3. The universal bearing according to claim 2 wherein said spherical surface abuts and is in sliding engagement with said rolling elements.
4. The universal bearing according to claim 2, wherein a plurality of receiving grooves are distributed on the annular supporting seat corresponding to the spherical surface, and each receiving groove is provided with a ball therein;
the ball in each accommodating groove is partially exposed outside the notch of the accommodating groove and is abutted against the rolling body.
5. The universal bearing according to claim 4, wherein each of the receiving grooves is provided with a rebound assembly for supporting the ball;
arbitrary the resilience subassembly in the storage tank all includes: the support plate is used for supporting the balls, and the elastic element is arranged between the bottom of the accommodating groove and the support plate and is connected with the bottom of the accommodating groove.
6. The universal bearing according to claim 5, wherein a side of the support plate opposite to the balls is a concave arc surface engaged with the balls.
7. The universal bearing according to claim 5, wherein a rebound direction of each of the elastic elements is directed toward an axial center of the rolling body.
8. The universal bearing according to claim 4, wherein a portion of the groove wall of each receiving groove at one end of the notch projects horizontally toward the inside of the receiving groove to form an annular stopper for abutting against the balls.
9. The universal bearing according to claim 8, wherein the side of the annular limiting portion against the ball is an annular concave arc surface.
10. The universal bearing according to any of claims 1-9, further comprising: a third bearing body disposed coaxially and oppositely to the second bearing body;
the third bearing body part is inserted into the first bearing body and is connected with the rolling body; the outer diameter of the third bearing body is smaller than the inner diameter of the annular lower edge part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021522869.XU CN212868176U (en) | 2020-07-28 | 2020-07-28 | Universal bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021522869.XU CN212868176U (en) | 2020-07-28 | 2020-07-28 | Universal bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212868176U true CN212868176U (en) | 2021-04-02 |
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ID=75217676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021522869.XU Active CN212868176U (en) | 2020-07-28 | 2020-07-28 | Universal bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212868176U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382778A (en) * | 2021-12-22 | 2022-04-22 | 盐城工学院 | Small-resistance rolling bearing with good stability |
-
2020
- 2020-07-28 CN CN202021522869.XU patent/CN212868176U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382778A (en) * | 2021-12-22 | 2022-04-22 | 盐城工学院 | Small-resistance rolling bearing with good stability |
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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: Universal Bearings Effective date of registration: 20230302 Granted publication date: 20210402 Pledgee: Agricultural Bank of China Limited Shanghai Huangpu Sub branch Pledgor: Shanghai Jia Shi supply chain management Limited by Share Ltd. Registration number: Y2023310000045 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20210402 Pledgee: Agricultural Bank of China Limited Shanghai Huangpu Sub branch Pledgor: Shanghai Jia Shi supply chain management Limited by Share Ltd. Registration number: Y2023310000045 |
|
| 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: Universal Bearings Granted publication date: 20210402 Pledgee: Agricultural Bank of China Limited Shanghai Huangpu Sub branch Pledgor: Shanghai Jia Shi supply chain management Limited by Share Ltd. Registration number: Y2024310000138 |