CN217926748U

CN217926748U - Universal joint

Info

Publication number: CN217926748U
Application number: CN202222158044.XU
Authority: CN
Inventors: 张丽华; 丁志华
Original assignee: Changzhou Airuiken Electromechanical Technology Development Co ltd
Current assignee: Changzhou Airuiken Electromechanical Technology Development Co ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2022-11-29
Anticipated expiration: 2032-08-16

Abstract

The utility model provides a universal joint, which comprises a first joint, a spherical ball head and a second joint which are connected in sequence; the first joint and the second joint are hinged with the ball head in a clamping and rotating mode; the first joint and the second joint are perpendicular relative to the rotating direction of the ball head. The first joint and the second joint are perpendicular in rotation direction, so that universal connection of the two parts is realized; first joint, second joint pass through joint, rotatory mode and install on the bulb, and reverse operation can be followed and demolishd on the bulb to realize quick assembly disassembly.

Description

Universal joint

Technical Field

The utility model relates to an universal joint technical field specifically is an universal joint.

Background

The universal joint is used for connecting two parts, wherein one part can rotate relative to the other part in any direction.

Universal joints generally take two forms, one of which is: the universal joint disclosed in the chinese patent CN112140067A realizes universal rotation by the ball being clamped in the ball socket; the second is as follows: the assembling method of the universal joint cross type universal joint and the universal joint cross type universal joint disclosed in the Chinese patent CN108603538A comprise a cross shaft, wherein bearings are arranged on four rods of the cross shaft, and every two opposite rods are connected with one joint, so that universal rotation is realized.

In the first structure, most of the ball head needs to be arranged in the ball socket, so that the open end of the ball socket is in a necking shape; in the second structure, the symmetrically arranged rods on the cross shaft need to be clamped into clamping holes of the joint, and the inner ring and the outer ring of the bearing need to be in interference fit. Both of these two structures are relatively complex and difficult to assemble and disassemble.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the technical problem of traditional universal joint dismouting difficulty is solved.

The utility model provides a universal joint, which comprises a first joint, a spherical ball head and a second joint which are connected in sequence;

the first joint and the second joint are hinged with the ball head in a clamping and rotating mode;

the first joint and the second joint are perpendicular relative to the rotating direction of the ball head.

The first joint and the second joint are perpendicular in rotation direction, so that universal connection of the two parts is realized; first joint, second joint pass through joint, rotatory mode and install on the bulb, and reverse operation can be followed and demolishd on the bulb to realize quick assembly disassembly.

The first joint and the second joint have the specific structure that the rotating directions are opposite: the ball head is provided with a first clamping groove and a second clamping groove which are annular, and the first clamping groove is vertical to the second clamping groove; the first joint is clamped with the first clamping groove; the second joint is clamped with the second clamping groove.

First joint first draw-in groove, second joint second draw-in groove, its concrete structure is: the first joint is provided with a first clamping plate used for clamping the first clamping groove; the second joint is provided with a second clamping plate used for clamping a second clamping groove;

the first clamping plate is provided with a first clamping hole with an opening and used for clamping the bottom of the first clamping groove;

the second clamping plate is provided with an open second clamping hole for clamping the bottom of the second clamping groove.

The opening width of the first clamping hole and the second clamping hole is large or small, and based on the opening width, the further design is as follows: the first clamping hole and the second clamping hole are both in a major arc shape. Therefore, the openings of the first clamping hole and the second clamping hole form a necking shape and cannot fall off from the ball head.

The opening widths of the first clamping hole and the second clamping hole are small, so that the groove bottoms of the first clamping groove and the second clamping groove are difficult to clamp, the problem is further solved in an improved mode, specifically, the connecting position of the first clamping groove and the second clamping groove is cut into symmetrically arranged planes, and the distance between the planes is smaller than the opening widths of the first clamping hole and the second clamping hole. So set up, make the opening direction in first card hole parallel with the plane earlier, first card hole inserts first draw-in groove along the plane direction until first card hole supports the tank bottom that leans on first draw-in groove, then rotates bulb or first joint, makes first card hole break away from the plane, can realize that first joint and bulb are connected. The second connector is also installed as described above.

After first joint is connected the completion with the bulb, during the installation second connects, can receive blockking of first cardboard to make the second card hole can't pass the second draw-in groove, support the tank bottom of leaning on the second draw-in groove, so further improve and solve this problem, it is specific, be equipped with the slot on the first cardboard, the length direction of slot is perpendicular with first cardboard. When the second joint is installed, the ball head is rotated firstly, one plane of the ball head is opposite to the slot, the second clamping plate can penetrate through the second clamping slot, and the second clamping hole is abutted against the bottom of the second clamping slot; and then the second joint is rotated, and the installation of the second joint can be completed.

The first joint or the second joint is easy to generate axial displacement when being connected with a part, so that the problem is further improved and solved, specifically, the outer ends of the first joint and the second joint are both provided with connecting holes, and key grooves are arranged in the connecting holes; the key groove is provided with threaded holes which are arranged in the radial direction. The screw connected with the thread is arranged in the thread hole, and the screw is locked, so that pressure is formed between the thread end of the screw and the flat key and between the thread end of the screw and the component, and the component is more stably arranged.

The problem is further improved and solved because the component is easy to rotate when being arranged on the first joint or the second joint, and the position precision is not high, in particular, the inner wall of the connecting hole is also provided with a pin hole which is arranged in the radial direction. The pin shaft penetrates through the pin hole and the component in sequence, so that relative rotation of the component is avoided.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic view of the present invention;

fig. 2 is an exploded view of the present invention;

FIG. 3 is a front cross-sectional view of the first fitting;

FIG. 4 is a front cross-sectional view of the second joint;

FIG. 5 is a top view of the ball head;

FIG. 6 isbase:Sub>A cross-sectional view A-A of FIG. 5;

FIG. 7 is a cross-sectional view B-B of FIG. 5;

FIG. 8 is a schematic view of the installation of the first adapter and ball head, with the first adapter and ball head in a disengaged condition;

FIG. 9 is a cross-sectional view C-C of FIG. 8;

FIG. 10 is a schematic view of the installation of the first adapter and ball head, the first adapter and ball head being in a connected state;

FIG. 11 is a cross-sectional view D-D of FIG. 10;

FIG. 12 is a schematic view of the installation of the first joint, the ball head and the second joint; the first joint and the ball head are in a connected state, and the second joint and the ball head are in a separated state;

FIG. 13 is a top view relative to FIG. 12;

FIG. 14 is a cross-sectional view E-E of FIG. 13;

in the figure: 1. a first joint; 2. a ball head; 3. a second joint; 4. connecting holes; 11. a first clamping plate; 12. a first card hole; 13. a slot; 21. a first card slot; 22. a second card slot; 23. a plane; 31. a second card; 32. a second card hole; 41. a keyway; 42. a threaded hole; 43. a pin hole.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

The first embodiment is as follows:

as shown in fig. 1 and 2, the present invention relates to a universal joint, which comprises a first joint 1, a spherical ball head 2 and a second joint 3 connected in sequence. The first joint 1 and the second joint 3 connect two components, respectively.

As shown in fig. 5-7, the ball head 2 is provided with a first annular locking groove 21 and a second annular locking groove 22, the first locking groove 21 and the second annular locking groove 22 are identical in shape and are vertically arranged, and the bottom of the first annular locking groove 21 is circular. The first and second locking

grooves

21 and 22 are symmetrically arranged relative to the center of the ball head 2. The junction of the first and second clamping

grooves

21, 22 is cut into symmetrically arranged flats 23 so that the distance between the flats 23 is less than the diameter of the groove bottom.

The first connector 1 is provided with a first clamping plate 11 for clamping a first clamping groove 21; the second connector 3 is provided with a second clamping plate 31 for clamping the second clamping groove 22. The first clamping plate 11 is provided with a first clamping hole 12 with an opening, the diameter of the first clamping hole is equal to that of the bottom of the groove, the first clamping hole is used for being clamped with the bottom of the first clamping groove 21, and the first joint 1 is hinged to the ball head 2. The second clamping plate 31 is provided with a second clamping hole 32 with an opening, the diameter of the second clamping hole is equal to the diameter of the bottom of the groove, the second clamping hole is used for clamping the bottom of the second clamping groove 22, and the second joint 3 is hinged to the ball head 2.

The open ends of the first card hole 12 and the second card hole 32 are wider than the distance between the planes 23.

The central position of the bottom of the first card board 11 is further provided with a slot 13, the slot 13 corresponds to the plane 23, and the length direction of the slot 13 is perpendicular to the first card board 11. When the slot 13 faces the flat surface 23, the first card 11 does not block the second card slot 22.

The utility model discloses an equipment step as follows: 1. adjusting the positions of the first joint 1 and the ball head 2 to enable the opening direction of the first clamping hole 12 to be parallel to the plane 23, and the opening end of the first clamping hole 12 is located on two sides of the plane 23; 2. moving the first connector 1 to insert the flat surface 23 into the first engaging hole 12 and make the inner wall of the first engaging hole 12 abut against the bottom of the arc-shaped slot of the first engaging groove 21, referring to fig. 8 and 9; 3. the ball head 2 is rotated by 90 degrees, so that the first connector 1 is connected with the ball head 2, and the slot 13 is opposite to one of the planes 23, referring to fig. 10 and 11; 4. adjusting the position of the second joint 3 to make the opening direction of the second clamping hole 32 parallel to the plane 23, and the opening end of the second clamping hole 32 is located at two sides of the plane 23; 5. moving the second connector 3 to insert the flat surface 23 into the second engaging hole 32 and make the inner wall of the second engaging hole 32 abut against the bottom of the arc-shaped slot of the second engaging groove 22, as shown in fig. 12-14; 6. the assembly can be completed by rotating the second joint 3.

The reverse operation of above-mentioned step can realize the utility model discloses dismantle.

The first joint 1 rotates along the bottom of the first clamping groove 21, and the groove wall of the first clamping groove 21 is used for limiting the installation of the first joint 1. The second connector 3 rotates along the bottom of the second slot 22, and the slot wall of the second slot 22 is used for mounting and limiting the second connector 3.

To sum up, realize the utility model discloses quick assembly disassembly has solved the technical problem of traditional universal joint dismouting difficulty.

Example two:

compared with the first embodiment, the differences are as follows: as shown in fig. 3 and 4, the outer ends of the first joint 1 and the second joint 3 are both provided with a connecting hole 4, and a key groove 41 is arranged in the connecting hole 4; the key groove 41 is provided with radially arranged threaded holes 42. The threaded screw is installed in the threaded hole 42 and locked, so that pressure is formed between the threaded end of the threaded screw and the flat key and between the threaded end of the threaded screw and the component, and the component is installed more stably.

Example three:

compared with the first embodiment, the differences are as follows: as shown in fig. 3 and 4, the inner wall of the connection hole 4 is further provided with a pin hole 43 arranged radially. The pin shaft passes through the pin hole 43 and the component in sequence, so that the component is prevented from rotating relatively, and the position precision is improved.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A universal joint, characterized by: comprises a first joint (1), a spherical ball head (2) and a second joint (3) which are connected in sequence;

the first joint (1) and the second joint (3) are hinged with the ball head (2) in a clamping and rotating mode;

the first joint (1) and the second joint (3) are perpendicular relative to the rotation direction of the ball head (2).

2. The universal joint according to claim 1, wherein: the ball head (2) is provided with a first clamping groove (21) and a second clamping groove (22) which are annular, and the first clamping groove (21) and the second clamping groove (22) are vertical;

the first joint (1) is clamped with the first clamping groove (21);

the second joint (3) is clamped with the second clamping groove (22).

3. The universal joint according to claim 2, wherein: the first joint (1) is provided with a first clamping plate (11) for clamping the first clamping groove (21); the second joint (3) is provided with a second clamping plate (31) for clamping the second clamping groove (22);

the first clamping plate (11) is provided with a first clamping hole (12) with an opening and used for clamping the bottom of the first clamping groove (21);

the second clamping plate (31) is provided with a second clamping hole (32) with an opening, and the second clamping hole is used for clamping the bottom of the second clamping groove (22).

4. The universal joint according to claim 3, wherein: the first clamping hole (12) and the second clamping hole (32) are both in a major arc shape.

5. The universal joint according to claim 4, wherein: the joint of the first clamping groove (21) and the second clamping groove (22) is cut into planes (23) which are symmetrically arranged, and the distance between the planes (23) is smaller than the opening width of the first clamping hole (12) and the second clamping hole (32).

6. The universal joint according to claim 5, wherein: the first clamping plate (11) is provided with a slot (13), and the length direction of the slot (13) is perpendicular to the first clamping plate (11).

7. The universal joint according to claim 1, wherein: the outer ends of the first joint (1) and the second joint (3) are respectively provided with a connecting hole (4), and a key groove (41) is arranged in each connecting hole (4);

the key groove (41) is provided with a threaded hole (42) which is arranged in the radial direction.

8. The universal joint according to claim 7, wherein: the inner wall of the connecting hole (4) is also provided with a pin hole (43) which is arranged in the radial direction.