CN212978396U - Ball joint - Google Patents
Ball joint Download PDFInfo
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- CN212978396U CN212978396U CN202020627378.5U CN202020627378U CN212978396U CN 212978396 U CN212978396 U CN 212978396U CN 202020627378 U CN202020627378 U CN 202020627378U CN 212978396 U CN212978396 U CN 212978396U
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- ball
- channel
- socket
- ball joint
- wedge
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Abstract
The utility model discloses a ball joint, including spheroid (1), first support piece (2), ball socket (3), thrust amplification piece, second support piece (8) and second connecting rod (10). Through this technical scheme, can increase the inseparable degree of laminating between ball socket and the spheroid through the secondary reinforcement of ball slide wedge reinforcement structure for this ball joint's end bearing load capacity promotes by a wide margin, and frictional resistance moment further increases, satisfies the application demand of ball joint at the effective locking of optional position.
Description
Technical Field
The utility model relates to a surgical robot field especially relates to a ball joint.
Background
In practical application environments, the ball joint of the operating table is required to be capable of freely moving within a predetermined range of up, down, left and right, and also required to be capable of keeping a locked state at any position in rotation. As a key part of an operating table, the load bearing capacity of the tail end of the ball joint is an important index influencing the performance of the whole set of equipment, but the load bearing capacity of the ball joint structure in the actual application environment is lower at present, and the ball joint structure cannot be effectively locked.
For further promoting the performance parameter of product, improve the competitiveness of product, need increase the profit to the ball joint structure and involve, increase the friction resistance moment, satisfy the terminal bigger ability of bearing load for the ball joint can all effectively lock in optional position.
Disclosure of Invention
To the above-mentioned problem that exists among the prior art, now provide a ball joint, specific technical scheme is as follows:
a ball joint specifically includes:
the ball body (1), the ball body (1) includes a first connecting rod (11) connected with the ball body (1);
the ball body support device comprises a first support piece (2), wherein a through channel (21) is arranged inside the first support piece (2), and the first support piece (2) is sleeved on the ball body (1) through the channel (21);
the outer diameter of the ball socket (3) is matched with the channel (21) and can move in the channel (21) along the radial direction of the channel (21), and the ball socket (3) is provided with a circular socket groove (31) matched with the ball body (1);
the thrust amplifying piece is arranged in the channel (21) and is tightly attached to the ball socket (3);
the second supporting piece (8) is fixedly connected with the first supporting piece (2), and the second supporting piece (8) is provided with a through circular through hole;
and the second connecting rod (10), the second connecting rod (10) is inserted into the second supporting piece (8) through the circular through hole and clings to the thrust amplification piece.
Preferably, the ball joint, wherein the thrust amplification member comprises:
an elastic member (4);
two cylindrical rollers (5);
the first wedge block (7), the first wedge block (7) comprises two symmetrical first wedge surfaces (71) and a circular lug (72);
the second wedge block (6) is fixedly arranged in the channel (21), and the second wedge block (6) comprises a through hole (61) and two symmetrical second wedge surfaces (62); the elastic piece (4) is sleeved on the round convex block (72) and is positioned between the ball socket (3) and the first wedge block (7);
the through hole (61) is adapted to the first wedge (7);
the second wedge surfaces (62) correspond to the first wedge surfaces (71) one by one, two symmetrical closed spaces are formed by matching the groove channel (21) and the ball socket (3), and the two cylindrical rollers (5) are arranged in the closed spaces respectively.
Preferably, the second connecting rod (10) of the ball joint is a lead screw, and the end of the lead screw is provided with a lead screw thread (101).
Preferably, the ball joint comprises a nut sleeve (9);
the nut sleeve (9) is fixedly connected with the second supporting piece (8) and inserted into the circular through hole, and the second connecting rod (10) is connected with the nut sleeve (9) in a matched mode through a screw rod thread (101).
Preferably, the ball joint is characterized in that the surface of the round socket (31) is provided with a plurality of annularly distributed channels (311).
Preferably, the ball joint is characterized in that the inner wall of the channel (21) is provided with an annular limiting groove;
the second wedge block (6) is fixedly arranged in the channel (21) through an annular limiting groove.
Preferably, the ball joint, wherein the channel (21) comprises a cylindrical channel and a circular arc channel;
the diameter of the cylindrical channel is matched with that of the ball socket (3);
the arc-shaped channel is adapted to the outer surface of the ball body (1).
Preferably, the ball joint, wherein the diameter of the second wedge (6) is the same as the diameter of the socket (3).
The technical scheme has the following advantages or beneficial effects:
through this technical scheme, can increase the inseparable degree of laminating between ball socket and the spheroid through the secondary reinforcement of ball slide wedge reinforcement structure for this ball joint's end bearing load capacity promotes by a wide margin, and frictional resistance moment further increases, satisfies the application demand of ball joint at the effective locking of optional position.
Drawings
Fig. 1 is a sectional view of a ball joint of the present invention;
fig. 2 is an exploded view of a ball joint of the present invention;
fig. 3 is a top view, a side view and a detail enlarged view of the circular socket in the ball joint of the present invention.
Wherein the reference numerals are as follows:
1 is a sphere; 11 is a first connecting rod;
2 is a first support member; 21 is a channel;
3 is a ball socket, and 31 is a circular socket groove;
4 is an elastic piece;
5 is a cylindrical roller;
6 is a second wedge block; 61 is a through hole; 62 is a second wedge surface;
7 is a first wedge block; 71 is a first wedge surface; 72 is a circular bump;
8 is a second support member;
9 is a nut sleeve;
10 is a second connecting rod, 101 is a screw thread.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
To the above-mentioned problem that exists among the prior art, provide a ball joint now, be applied to surgical robot field, concrete technical scheme is as follows:
a ball joint, as shown in fig. 1-2, specifically comprising:
the ball body (1), the ball body (1) includes a first connecting rod (11) connected with the ball body (1);
the ball body support device comprises a first support piece (2), wherein a through channel (21) is arranged inside the first support piece (2), and the first support piece (2) is sleeved on the ball body (1) through the channel (21);
the outer diameter of the ball socket (3) is matched with the channel (21) and can move in the channel (21) along the radial direction of the channel (21), and the ball socket (3) is provided with a circular socket groove (31) matched with the ball body (1);
the thrust amplifying piece is arranged in the channel (21) and is tightly attached to the ball socket (3);
the second supporting piece (8) is fixedly connected with the first supporting piece (2), and the second supporting piece (8) is provided with a through circular through hole;
and the second connecting rod (10), the second connecting rod (10) is inserted into the second supporting piece (8) through the circular through hole and clings to the thrust amplification piece.
As a preferred embodiment, the ball joint, wherein the thrust amplifying piece comprises:
an elastic member (4);
two cylindrical rollers (5);
the first wedge block (7), the first wedge block (7) comprises two symmetrical first wedge surfaces (71) and a circular lug (72);
the second wedge block (6) is fixedly arranged in the channel (21), and the second wedge block (6) comprises a through hole (61) and two symmetrical second wedge surfaces (62); the elastic piece (4) is sleeved on the round convex block (72) and is positioned between the ball socket (3) and the first wedge block (7);
the through hole (61) is adapted to the first wedge (7);
the second wedge surfaces (62) correspond to the first wedge surfaces (71) one by one, two symmetrical closed spaces are formed by matching the groove channel (21) and the ball socket (3), and the two cylindrical rollers (5) are arranged in the closed spaces respectively.
In a preferred embodiment, the ball joint, the second connecting rod (10) is a lead screw, and the end of the lead screw is provided with a lead screw thread (101).
In a preferred embodiment, the ball joint comprises a nut sleeve (9);
the nut sleeve (9) is fixedly connected with the second supporting piece (8) and inserted into the circular through hole, and the second connecting rod (10) is connected with the nut sleeve (9) in a matched mode through a screw rod thread (101).
In a preferred embodiment of the present invention, a lead screw (10) is used to provide the axial thrust during locking, and a disc spring is selected as the elastic member (4). When the assembly of each component of the ball joint is completed, the ball body (1) can rotate up, down, left and right freely within an angle range because the screw rod (10) does not apply axial thrust at the moment; when the screw rod (10) starts to rotate under the action of external force, as shown in fig. 1, due to the limiting effect of the nut sleeve (9), axial thrust is generated and starts to push the first wedge block (7) to move towards the ball body (1), at the moment, the thrust is transmitted to the cylindrical roller (5) through the first wedge surface (71), first thrust amplification is obtained, and the cylindrical roller (5) is pushed to roll towards two sides, because the second wedge block (6) is fixedly arranged in the channel (21), the axial thrust is amplified for the second time by the limiting effect of the second wedge surface (62) in the outward movement process of the cylindrical roller (5), and under the combined action of the two amplifications, the axial thrust is transmitted to the ball socket (3) from the cylindrical roller (5), so that the ball socket (3) and the ball body (1) are compressed and locked, and the application requirement of effective locking of the ball joint is realized, at the moment, the disc spring (4) receives axial thrust and is compressed; when the axial thrust of the screw rod (10) is cancelled, the disc spring (4) is restored from a compressed state, the first wedge block (7) is reset under the action of the disc spring (4), the ball body (1) and the ball socket (3) are not locked tightly, and the ball body (1) can rotate up, down, left and right freely within an angle range.
In a preferred embodiment, the ball joint is shown in fig. 3, wherein the surface of the circular socket (31) is provided with a plurality of annularly distributed channels (311).
In another preferred embodiment of the present invention, as shown in fig. 3, the surface of the circular socket (31) is provided with a plurality of annularly distributed channels (311), and the channels (311) can be right-angle grooves or round-angle grooves. Through the arrangement of the grooves (311), the friction coefficient between the ball body (1) and the surface of the circular socket (31) can be further increased, the friction resistance moment between the ball body and the circular socket can be further increased, and the load bearing capacity of the tail end can be further improved.
In a preferred embodiment, the ball joint is characterized in that the first support (2) and the second support (8) are fixedly connected through a bolt connection method.
In another preferred embodiment of the present invention, as shown in fig. 2, the first supporting member (2) and the second supporting member (8) are fixedly connected by a bolt connection method, so that the components of the ball joint mechanism are tightly connected and are not easily damaged by external impact.
In a preferred embodiment, the ball joint is characterized in that the nut sleeve (9) is fixedly connected with the second support (8) through a bolt connection method.
In another preferred embodiment of the present invention, as shown in fig. 2, the nut sleeve (9) is fixedly connected to the second supporting member (8) by means of a bolt connection, so that the axial thrust generated by the screw (10) can be accurately directed to the first wedge (7).
In a preferred embodiment, the ball joint is characterized in that the inner wall of the channel (21) is provided with an annular limiting groove;
the second wedge block (6) is fixedly arranged in the channel (21) through an annular limiting groove.
In another preferred embodiment of the present invention, by providing an annular limiting groove on the inner wall of the groove (21), not only the second wedge (6) can be fixed, but also the relative position of the second wedge (6) can be determined, which facilitates the determination of the position of the second wedge (6) and other cooperating internal structures during installation.
In a preferred embodiment, the ball joint, wherein the groove (21) comprises a cylindrical groove and a circular arc groove;
the diameter of the cylindrical channel is matched with that of the ball socket (3);
the arc-shaped channel is adapted to the outer surface of the ball body (1).
In another preferred embodiment of the present invention
In a preferred embodiment, the ball joint is provided with a second wedge (6) having the same diameter as the ball socket (3).
In another preferred embodiment of the present invention, the setting size of the inner structure of the ball joint is further limited, so that the components can be more closely matched with each other, thereby improving the integrity of the ball joint.
A specific embodiment is now provided to further explain and explain the technical solution specifically:
in the embodiment of the utility model, the ball body (1) is inserted into the bracket round hole of the operating bed through the first connecting rod (11) and is fixedly installed. As shown in figure 1, when the screw rod (10) does not apply axial thrust, the sphere (1) can rotate up, down, left and right freely within an angle range; when the screw rod (10) generates axial thrust, the axial thrust is transmitted to the ball socket (3) through the secondary amplification of the cylindrical roller (5), so that the ball socket (3) and the ball body (1) are tightly attached, pressed and locked, and the application requirement of ball joint locking is realized; when the screw rod (10) is reset, the first wedge block (7) is reset under the action of the disc spring (4), so that the ball body (1) and the ball socket (3) are not locked tightly, and can rotate up, down, left and right freely within an angle range.
In the above embodiment, as shown in fig. 3, the surface of the circular socket groove (31) is provided with a plurality of right-angle grooves (311) distributed annularly, and by the arrangement of the right-angle grooves (311), the friction coefficient between the ball (1) and the surface of the circular socket groove (31) can be further increased, and the frictional resistance moment between the ball and the circular socket groove can be further increased, so that the locking is more reliable.
In conclusion, according to the technical scheme, the joint tightness degree between the ball socket and the ball body can be increased through secondary reinforcement of the ball wedge reinforcement structure, so that the end load bearing capacity of the ball joint is greatly improved, the friction resistance moment is further increased, and the application requirement of effective locking of the ball joint at any position is met.
The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.
Claims (8)
1. A ball joint, characterized in that, ball joint specifically includes:
a ball (1), the ball (1) comprising a first connecting rod (11) connecting the ball (1);
the ball body support device comprises a first support part (2), wherein a through channel (21) is arranged inside the first support part (2), and the first support part (2) is sleeved on the ball body (1) through the channel (21);
the ball socket (3), the external diameter of the ball socket (3) is adapted to the channel (21), the ball socket can move along the channel (21) in the radial direction, and the ball socket (3) is provided with a circular socket groove (31) adapted to the ball body (1);
a thrust amplification member arranged in the channel (21) and abutting against the socket (3);
the second supporting piece (8) is fixedly connected with the first supporting piece (2), and a through circular through hole is formed in the second supporting piece (8);
a second connecting rod (10), said second connecting rod (10) being inserted into said second support (8) by passing through said circular through hole and abutting against said thrust amplification member.
2. The ball joint of claim 1, wherein the thrust amplifier member comprises:
an elastic member (4);
two cylindrical rollers (5);
the first wedge block (7), the first wedge block (7) comprises two symmetrical first wedge surfaces (71) and a round bump (72);
the second wedge block (6) is fixedly arranged in the channel (21), and the second wedge block (6) comprises a through hole (61) and two symmetrical second wedge surfaces (62);
the elastic piece (4) is sleeved on the round bump (72) and positioned between the ball socket (3) and the first wedge block (7);
the through hole (61) is adapted to the first wedge (7);
the second wedge surfaces (62) correspond to the first wedge surfaces (71) one by one, two symmetrical closed spaces are formed by matching the channel (21) and the ball socket (3), and the two cylindrical rollers (5) are arranged in the closed spaces respectively.
3. Ball joint according to claim 1, wherein the second connecting rod (10) is a lead screw, the end of which is provided with a lead screw thread (101).
4. A ball joint according to claim 3, characterized in that it comprises a nut socket (9);
the nut sleeve (9) is fixedly connected with the second supporting piece (8) and inserted into the circular through hole, and the second connecting rod (10) is connected with the nut sleeve (9) in a matched mode through the screw rod threads (101).
5. Ball joint according to claim 1, characterised in that the surface of the circular socket (31) is provided with a plurality of annularly distributed channels (21).
6. The ball joint according to claim 2, characterized in that the inner wall of said channel (21) is provided with an annular limiting groove;
the second wedge block (6) is fixedly arranged in the channel (21) through the annular limiting groove.
7. The ball joint according to claim 1, wherein said channel (21) comprises a cylindrical channel and a circular arc channel;
the diameter of the cylindrical channel is adapted to the diameter of the ball socket (3);
the arc-shaped groove channel is adapted to the outer surface of the ball body (1).
8. Ball joint according to claim 2, characterised in that the diameter of the second wedge (6) is the same as the diameter of the socket (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020627378.5U CN212978396U (en) | 2020-04-23 | 2020-04-23 | Ball joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020627378.5U CN212978396U (en) | 2020-04-23 | 2020-04-23 | Ball joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212978396U true CN212978396U (en) | 2021-04-16 |
Family
ID=75398370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020627378.5U Active CN212978396U (en) | 2020-04-23 | 2020-04-23 | Ball joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212978396U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114099218A (en) * | 2021-12-10 | 2022-03-01 | 上海电气集团股份有限公司 | Cervical vertebra positioning device and operating table |
| CN114811348A (en) * | 2021-09-28 | 2022-07-29 | 向帆 | Ball joint mechanism |
| WO2023115782A1 (en) * | 2021-12-23 | 2023-06-29 | 北京罗森博特科技有限公司 | Mechanical arm |
-
2020
- 2020-04-23 CN CN202020627378.5U patent/CN212978396U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811348A (en) * | 2021-09-28 | 2022-07-29 | 向帆 | Ball joint mechanism |
| CN114099218A (en) * | 2021-12-10 | 2022-03-01 | 上海电气集团股份有限公司 | Cervical vertebra positioning device and operating table |
| WO2023115782A1 (en) * | 2021-12-23 | 2023-06-29 | 北京罗森博特科技有限公司 | Mechanical arm |
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| GR01 | Patent grant |