CN214465538U - Combined universal joint - Google Patents
Combined universal joint Download PDFInfo
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- CN214465538U CN214465538U CN202120496787.0U CN202120496787U CN214465538U CN 214465538 U CN214465538 U CN 214465538U CN 202120496787 U CN202120496787 U CN 202120496787U CN 214465538 U CN214465538 U CN 214465538U
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- guide
- limiting sleeve
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Abstract
The utility model discloses a combined universal joint; belongs to the technical field of medical treatment and bionics; the anti-loosening device is technically characterized by comprising a first connecting piece and a second connecting piece which are matched with each other, wherein one end of the first connecting piece is integrally formed with a guide limiting ball head, a spherical limiting sleeve is concentrically wrapped on the periphery of the guide limiting ball head, and a first anti-loosening structure is arranged at the contact part of the first connecting piece and the spherical limiting sleeve; a spherical cavity is formed in the spherical limiting sleeve, and a guide limiting seat is arranged in a gap between the spherical cavity and the guide limiting ball head; one end of the second connecting piece penetrates through the spherical limiting sleeve to be fixedly connected with the guiding limiting seat, and a second anti-loosening structure is arranged at the contact part of the second connecting piece and the spherical limiting sleeve; a guide limit groove matched with the first connecting piece or the second connecting piece is arranged on the spherical limit sleeve; the utility model aims at providing a can satisfy different joint needs and carry out analogue simulation's combination formula universal joint.
Description
Technical Field
The utility model relates to an universal joint, more specifically say, especially relate to a modular universal joint.
Background
The artificial joint has wide application, and can be applied to the replacement of human joints and equipment with a plurality of highly flexible and complex mechanisms. In the medical field and the robot field, artificial joints are generally used for simulating or replacing human joint motions, but human joints are divided into a plurality of types and have different functions, the existing artificial joints cannot meet the requirements, and most of the existing artificial joints are purely connected by rigid parts, so that the artificial joints have more parts and complex structures, are low in flexibility and motion stability, and cannot well simulate the normal joint motions of human bodies.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the not enough of above-mentioned prior art, provide a simple structure, flexibility and motion stability are higher, can satisfy different joint needs and carry out analogue simulation's combination formula universal joint.
The technical scheme of the utility model is realized like this: a combined universal joint comprises a first connecting piece and a second connecting piece which are matched with each other, wherein one end of the first connecting piece is integrally formed with a guide limiting ball head, the periphery of the guide limiting ball head is concentrically wrapped with a spherical limiting sleeve, and a first anti-loosening structure is arranged at the contact part of the first connecting piece and the spherical limiting sleeve; a spherical cavity is formed in the spherical limiting sleeve, and a guide limiting seat is arranged in a gap between the spherical cavity and the guide limiting ball head; the radius of the circle where the outer arched spherical surface on the guide limiting seat is located is matched with the radius of the circle where the spherical cavity is located, and the radius of the circle where the inner concave spherical surface on the guide limiting seat is located is matched with the radius of the circle where the guide limiting ball head is located; one end of the second connecting piece penetrates through the spherical limiting sleeve to be fixedly connected with the guiding limiting seat, and a second anti-loosening structure is arranged at the contact part of the second connecting piece and the spherical limiting sleeve; the spherical limiting sleeve is provided with a guide limiting groove matched with the first connecting piece or the second connecting piece, the connecting piece positioned in the guide limiting groove moves along the guide limiting groove in the first connecting piece and the second connecting piece, and the other connecting piece is rotatably connected with the spherical limiting sleeve.
In the above-mentioned combined universal joint, the first anti-loosening structure is a first annular positioning groove formed in the first connecting member, a positioning through hole matched with the first annular positioning groove is formed in the spherical position-limiting sleeve, and the first connecting member is rotatably connected with the spherical position-limiting sleeve under the matching of the first annular positioning groove and the positioning through hole.
In the above-mentioned combined universal joint, the first connecting piece inside the positioning through hole is integrally formed with a limit convex ring adapted to the inner wall of the spherical limit sleeve.
In the above-mentioned combined universal joint, the second connecting piece is connected with the guide limiting seat through the connecting column, and the second connecting piece, the connecting column and the guide limiting seat are of an integrally formed integral structure; the outer diameter of the connecting column is smaller than that of the second connecting piece, and the second anti-loosening structure is a second annular positioning groove formed by matching the second connecting piece, the connecting column and the guide limiting seat; the width of the guide limiting groove is adapted to the outer diameter of the connecting column.
In the above-mentioned combined universal joint, the outer surface of the spherical position-limiting sleeve on one side of the guide position-limiting groove is concavely provided with an installation cambered surface, and two ends of the spherical position-limiting sleeve on the other side of the guide position-limiting groove are provided with abdicating cambered surfaces corresponding to the installation cambered surfaces; a protective cover is arranged outside the installation arc surface and one of the abdicating arc surfaces, and the radius of a circle where the outer surface of the protective cover is located is the same as that of a circle where the outer surface of the spherical limiting sleeve is located;
an arc-shaped guide long hole is arranged on the installation arc surface along the horizontal direction, and a limiting block connected with the protective cover is arranged in a spherical limiting sleeve corresponding to the arc-shaped guide long hole;
under the initial condition, the connecting piece that is located the direction spacing inslot is located the direction spacing groove center, and when the connecting piece that is located the direction spacing inslot rotated towards one of them side, this connecting piece promoted the protection casing and rotated towards the opposite side, and when the connecting piece rotated extremely spacing, the protection casing rotated to corresponding in the cambered surface of stepping down.
By adopting the structure, the spherical limiting sleeve can be limited on the first connecting piece by arranging the first anti-loosening structure to carry out axial positioning; the guide limiting seat is matched with the spherical cavity, so that the guide limiting seat can slide in the spherical cavity; the position between the other end of the spherical limiting sleeve and the second connecting piece can be limited by arranging the second anti-loosening structure to realize axial positioning; through setting up the direction spacing groove, can realize that the connecting piece in the direction spacing inslot rotates at the within range that the direction spacing groove is injectd, adapts to human or the different joint application occasions of robot.
Drawings
The present invention will be described in further detail with reference to the following examples, which are not intended to limit the invention.
Fig. 1 is a schematic structural view of embodiment 1 of the present invention;
fig. 2 is a perspective view of embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 4 is a schematic structural diagram of embodiment 3 of the present invention;
fig. 5 is a plan view of embodiment 3 of the present invention;
fig. 6 is a partial sectional view of embodiment 3 of the present invention;
fig. 7 is a perspective view of embodiment 3 of the present invention;
fig. 8 is a sectional view of embodiment 3 of the present invention.
In the figure: 1. a first connecting member; 1a, guiding and limiting a ball head; 1b, a first annular positioning groove; 1c, a limit convex ring; 2. a second connecting member; 2a, a second annular positioning groove; 3. a spherical position-limiting sleeve; 3a, a spherical chamber; 3b, guiding a limiting groove; 3c, positioning the through hole; 3d, installing an arc surface; 3e, abdicating the cambered surface; 3f, arc-shaped guide long holes; 4. a guiding limiting seat; 5. connecting columns; 6. a protective cover; 7. a limiting block; 8. a power guide base; 9. the guide rib.
Detailed Description
Example 1
Referring to fig. 1 to 2, a combined universal joint of the present invention includes a first connecting member 1 and a second connecting member 2, which are matched with each other, wherein a guiding and limiting ball head 1a is integrally formed at one end of the first connecting member 1, a spherical limiting sleeve 3 is concentrically wrapped around the guiding and limiting ball head 1a, and a first anti-loosening structure is disposed at a contact portion between the first connecting member 1 and the spherical limiting sleeve 3; can carry out axial positioning with spherical stop collar 3 spacing on first connecting piece 1 through setting up first anti-loosening structure.
A spherical cavity 3a is formed in the spherical limiting sleeve 3, and a guide limiting seat 4 is arranged in a gap between the spherical cavity 3a and the guide limiting ball head 1 a; the radius of the circle where the outer arched spherical surface on the guide limiting seat 4 is located is matched with the radius of the circle where the spherical cavity 3a is located, and the radius of the circle where the inner concave spherical surface on the guide limiting seat 4 is located is matched with the radius of the circle where the guide limiting ball head 1a is located; through setting up spacing seat of direction 4 and spherical cavity 3a and cooperate, can realize that spacing seat of direction 4 slides in spherical cavity 3 a.
One end of the second connecting piece 2 penetrates through the spherical limiting sleeve 3 to be fixedly connected with the guide limiting seat 4, and a second anti-loosening structure is arranged at the contact part of the second connecting piece 2 and the spherical limiting sleeve 3; a guide limiting groove 3b matched with the first connecting piece 1 or the second connecting piece 2 is arranged on the spherical limiting sleeve 3, in the first connecting piece 1 and the second connecting piece 2, the connecting piece positioned in the guide limiting groove 3b moves along the guide limiting groove 3b, and the other connecting piece is rotatably connected with the spherical limiting sleeve 3; the position between the other end of the spherical limiting sleeve 3 and the second connecting piece 2 can be limited by arranging a second anti-loosening structure to realize axial positioning; through setting up direction spacing groove 3b, can realize that the connecting piece in the direction spacing groove 3b rotates in the within range that direction spacing groove 3b was injectd, adapts to human or the different joint application occasions of robot.
Preferably, the first anti-loosening structure is a first annular positioning groove 1b arranged on the first connecting piece 1, a positioning through hole 3c matched with the first annular positioning groove 1b is arranged on the spherical limiting sleeve 3, and the first connecting piece 1 is rotatably connected with the spherical limiting sleeve 3 under the matching of the first annular positioning groove 1b and the positioning through hole 3 c; through the first annular constant head tank 1b that sets up on the first connecting piece 1 and the positioning hole 3c that sets up on the spherical stop collar 3 mutually support, can realize prescribing a limit to 3 one ends of spherical stop collar at first annular constant head tank 1b and realize axial positioning, do not influence first connecting piece 1 and spherical stop collar 3 when the connecting piece in the spacing groove of direction 3b rotates simultaneously and rotate and be connected.
Furthermore, the guide limiting groove 3b is an arc-shaped groove, the central angle corresponding to the arc where the guide limiting groove is located is less than 180 degrees, and the rotating angle and the range of the connecting piece in the guide limiting groove 3b can be limited according to different application requirements.
Example 2
Referring to fig. 3, the structure of a combined universal joint of the present invention is substantially the same as that of embodiment 1, except that a first connecting member 1 inside the positioning through hole 3c is integrally formed with a limiting convex ring 1c adapted to the inner wall of the spherical limiting sleeve 3; the position relation between the spherical position-limiting sleeve 3 and the first connecting piece 1 can be further limited by arranging the position-limiting convex ring 1c to be matched with the first annular positioning groove 1 b.
Preferably, the second connecting piece 2 is connected with the guide limiting seat 4 through a connecting column 5, and the second connecting piece 2, the connecting column 5 and the guide limiting seat 4 are of an integrally formed integral structure; the outer diameter of the connecting column 5 is smaller than that of the second connecting piece 2, and the second anti-loosening structure is a second annular positioning groove 2a formed by matching the second connecting piece 2, the connecting column 5 and the guide limiting seat 4; the width of the guide limiting groove 3b is adapted to the outer diameter of the connecting column 5; through setting up the second annular constant head tank 2a that integrated into one piece's spliced pole 5 and second connecting piece 2 and the cooperation of the spacing seat 4 of direction formed, can inject the realization axial positioning to the position between 3 other ends of spherical stop collar and the second connecting piece 2.
Furthermore, the guide limiting groove 3b is an arc-shaped groove, the central angle corresponding to the arc where the guide limiting groove is located is larger than 180 degrees, and the rotating angle and the range of the connecting piece in the guide limiting groove 3b can be limited according to different application requirements.
Example 3
Referring to fig. 4 to 8, a combined universal joint of the present invention has a structure substantially the same as that of embodiment 1, except that a power guide seat 8 is disposed on the periphery of the spherical limiting sleeve 3, and a plurality of guide ribs 9 connected to a connecting member in the guide limiting groove 3b and used for guiding the connecting member to rotate are circumferentially disposed on the power guide seat 8; the connecting piece in the guide limiting groove 3b can be driven to rotate by pulling the guide ribs 9 in different directions.
Preferably, the outer surface of the spherical limiting sleeve 3 at one side of the guide limiting groove 3b is concavely provided with an installation cambered surface 3d, and two ends of the spherical limiting sleeve 3 at the other side of the guide limiting groove 3b are provided with abdicating cambered surfaces 3e corresponding to the installation cambered surfaces 3 d; a protective cover 6 is arranged outside the installation arc surface 3d and one of the abdicating arc surfaces 3e, and the radius of the circle where the outer surface of the protective cover 6 is located is the same as that of the circle where the outer surface of the spherical limiting sleeve 3 is located; an arc-shaped guide long hole 3f is arranged on the installation arc surface 3d along the horizontal direction, and a limiting block 7 connected with the protective cover 6 is arranged in the spherical limiting sleeve 3 corresponding to the arc-shaped guide long hole 3 f; by arranging the protective cover 6 matched with the installation cambered surface 3d and the abdication cambered surface 3e, the protective cover 6 can be pushed to the other side to protect the guide limiting groove 3b when the guide ribs 9 pull the connecting piece in the guide limiting groove 3b to rotate towards one side, so that the connecting piece in the subsequent guide limiting groove 3b can not smoothly rotate in other directions due to the fact that the oppositely arranged guide ribs 9 are clamped into the guide limiting groove 3 b; stopper 7 and arc direction slot hole 3f swing joint are connected through setting up protection casing 6 and stopper 7 and can realize that protection casing 6 removes at arc direction slot hole 3 f.
Under initial condition, the connecting piece that is located direction spacing groove 3b center, and when the connecting piece that is located direction spacing groove 3b rotated towards one of them side, this connecting piece promoted protection casing 6 and rotated towards the opposite side, and when the connecting piece rotated extremely spacing, protection casing 6 rotated to corresponding cambered surface 3e of stepping down.
The above embodiment is the preferred embodiment of the present invention, which is only used to facilitate the explanation of the present invention, it is not right to the present invention, which makes the restriction on any form, and any person who knows commonly in the technical field can use the present invention to make the equivalent embodiment of local change or modification without departing from the technical features of the present invention.
Claims (5)
1. A combined universal joint comprises a first connecting piece (1) and a second connecting piece (2) which are matched with each other, and is characterized in that a guide limiting ball head (1a) is integrally formed at one end of the first connecting piece (1), a spherical limiting sleeve (3) is concentrically wrapped at the periphery of the guide limiting ball head (1a), and a first anti-loosening structure is arranged at a contact part of the first connecting piece (1) and the spherical limiting sleeve (3);
a spherical cavity (3a) is formed in the spherical limiting sleeve (3), and a guide limiting seat (4) is arranged in a gap between the spherical cavity (3a) and the guide limiting ball head (1 a); the radius of a circle where the outer arched spherical surface on the guide limiting seat (4) is located is matched with that of a circle where the spherical cavity (3a) is located, and the radius of a circle where the inner concave spherical surface on the guide limiting seat (4) is located is matched with that of a circle where the guide limiting ball head (1a) is located;
one end of the second connecting piece (2) penetrates through the spherical limiting sleeve (3) to be fixedly connected with the guiding limiting seat (4), and a second anti-loosening structure is arranged at the contact part of the second connecting piece (2) and the spherical limiting sleeve (3); a guide limiting groove (3b) matched with the first connecting piece (1) or the second connecting piece (2) is formed in the spherical limiting sleeve (3), the connecting piece located in the guide limiting groove (3b) moves along the guide limiting groove (3b) in the first connecting piece (1) and the second connecting piece (2), and the other connecting piece is rotatably connected with the spherical limiting sleeve (3).
2. The combined universal joint according to claim 1, wherein the first anti-loosening structure is a first annular positioning groove (1b) provided on the first connecting member (1), a positioning through hole (3c) matched with the first annular positioning groove (1b) is provided on the spherical position-limiting sleeve (3), and the first connecting member (1) is rotatably connected with the spherical position-limiting sleeve (3) under the matching of the first annular positioning groove (1b) and the positioning through hole (3 c).
3. The combined universal joint according to claim 2, wherein a limit convex ring (1c) corresponding to the inner wall of the spherical limit sleeve (3) is integrally formed on the first connecting piece (1) at the inner side of the positioning through hole (3 c).
4. The combined universal joint according to any one of claims 1 to 3, wherein the second connecting member (2) is connected with the guide limiting seat (4) through a connecting column (5), and the second connecting member (2), the connecting column (5) and the guide limiting seat (4) are of an integrally formed integral structure;
the outer diameter of the connecting column (5) is smaller than that of the second connecting piece (2), and the second anti-loosening structure is a second annular positioning groove (2a) formed by matching the second connecting piece (2), the connecting column (5) and the guide limiting seat (4); the width of the guide limiting groove (3b) is adapted to the outer diameter of the connecting column (5).
5. The combined universal joint according to claim 1, wherein the outer surface of the spherical limiting sleeve (3) on one side of the guide limiting groove (3b) is concavely provided with an installation cambered surface (3d), and both ends of the spherical limiting sleeve (3) on the other side of the guide limiting groove (3b) are provided with abdicating cambered surfaces (3e) corresponding to the installation cambered surfaces (3 d);
a protective cover (6) is arranged outside the installation cambered surface (3d) and one of the abdicating cambered surfaces (3e), and the radius of the circle where the outer surface of the protective cover (6) is located is the same as that of the circle where the outer surface of the spherical limiting sleeve (3) is located;
an arc-shaped guide long hole (3f) is arranged on the installation arc surface (3d) along the horizontal direction, and a limiting block (7) connected with the protective cover (6) is arranged in the spherical limiting sleeve (3) corresponding to the arc-shaped guide long hole (3 f);
under the initial condition, the connecting piece that is located direction spacing groove (3b) center, and when the connecting piece that is located direction spacing groove (3b) rotated towards one of them side, this connecting piece promoted protection casing (6) and rotated towards the opposite side, when the connecting piece rotated extremely spacing, protection casing (6) rotated to corresponding cambered surface of stepping down (3e) in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120496787.0U CN214465538U (en) | 2021-03-09 | 2021-03-09 | Combined universal joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120496787.0U CN214465538U (en) | 2021-03-09 | 2021-03-09 | Combined universal joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214465538U true CN214465538U (en) | 2021-10-22 |
Family
ID=78153905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120496787.0U Active CN214465538U (en) | 2021-03-09 | 2021-03-09 | Combined universal joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214465538U (en) |
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2021
- 2021-03-09 CN CN202120496787.0U patent/CN214465538U/en active Active
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