Universal quick locking device

Abstract

The utility model provides a general type fast locking device, including rotary type fast locking subassembly and pin column, the pin column can be inserted into its inside from the bottom of rotary type fast locking subassembly, the rotary type fast locking subassembly includes pin bush, rotary sleeve, connecting piece and ball, rotary sleeve is sleeved on the outer wall of pin bush, and the rotary sleeve and the pin bush are connected together through the connecting piece, and the ball is inserted into the pin bush. The lower end of the connecting piece is connected with the top of the pin sleeve, the upper end of the connecting piece is a free end, and the rotating sleeve can rotate along the outer wall of the pin sleeve with the cylinder of the connecting piece as the axis. An annular groove is formed in the side wall of the pin column, the ball is movably arranged on the side wall of the pin sleeve and penetrates through the side wall of the pin sleeve, the inner wall of the rotating sleeve can extrude the ball in the rotating process, part of the ball enters the annular groove, and locking of the rotating type fast locking assembly and the pin column is achieved. The locking device is small in size, space-saving, tighter in locking, capable of being quickly disassembled and assembled, simple and convenient to operate and good in repeatability.

Description

Technical Field

[0001] The utility model belongs to the technical field of locking devices, and particularly relates to a universal quick locking device. Background Art

[0002] In many fields, such as mechanical processing, sheet metal processing, welding, optoelectronic packaging and other intensive industries, there are many situations that require tooling to assist production in order to improve production efficiency.

[0003] For example, in production, we often encounter situations where a spare part is temporarily fixed to a platform or part for spraying, printing, testing, processing, etc., and a light load is applied. The more conventional method is to use screws to lock it. Although the cost of screw locking is low, the operation efficiency is very low. As the number of uses increases, the screw holes are more worn and debris is generated. When there are requirements for the appearance of the operated parts to be free of foreign matter, the screw locking method is completely inapplicable.

[0004] Therefore, in production operations, a quick locking device with strong versatility, good repeatability, easy operation and low cost can greatly improve production efficiency.

[0005] With the development of productivity and the refinement of social division of labor, similar quick fastening devices have formed a certain scale and are developing towards standardization. Many companies specializing in the research and development and manufacturing of such convenient quick-locking devices have also emerged at home and abroad, such as Imao and norelem. The quick-locking products produced by the above-mentioned companies are widely used on the market. Their locking products have similar structures, with handles, vertical spring locking, large size and high height. Although easy to use, it cannot be applied to some high-demand use occasions.

[0006] In general, the existing devices have the following disadvantages when used:

[0007] First, the existing devices are large in vertical direction, which is completely unsuitable for use scenarios that require the fastening device not to protrude from the surface of the parts to be locked. In addition, the existing devices are designed with handles, which makes the volume even larger. It takes up more space. Finally, the existing devices do not fully achieve locking because their designs all use springs to achieve locking force. They are not suitable for use scenarios that require full contact. Utility Model Content

[0008] Purpose of the utility model: In order to solve the defects of the prior art, the utility model provides a universal quick locking device, which is small in size, saves space, locks tighter, can be quickly disassembled and assembled, is easy to operate, and has good repeatability.

[0009] Technical solution: To achieve the above purpose, the utility model adopts the following technical solution:

[0010] A universal quick locking device comprises a rotary quick lock assembly and a pin, wherein the pin can be inserted into the interior of the rotary quick lock assembly from the bottom thereof, wherein the rotary quick lock assembly comprises a pin sleeve, a rotary sleeve, a connecting piece and a ball, wherein the rotary sleeve is sleeved on the outer wall of the pin sleeve, and the two are connected together by a connecting piece, wherein the lower end of the connecting piece is connected to the top of the pin sleeve, and the upper end is a free end, and the rotary sleeve can rotate along the outer wall of the pin sleeve with the cylinder of the connecting piece as the axis; an annular groove is arranged on the side wall of the pin, and the ball is movably arranged on the side wall of the pin sleeve and penetrates the side wall of the pin sleeve, and the inner wall of the rotary sleeve can squeeze the ball during rotation so that part of the ball enters into the annular groove, thereby realizing the locking of the rotary quick lock assembly and the pin.

[0011] As a specific implementation scheme, an annular groove is left above the connection between the connecting piece and the pin sleeve, and an annular protrusion is provided on the inner wall of the rotating sleeve. The annular protrusion is stuck in the annular groove to connect the pin sleeve and the rotating sleeve together; preferably, the connecting piece is selected from a shoulder screw.

[0012] Furthermore, a positioning rod is provided on the top of the pin sleeve, and an arc-shaped groove is provided on the annular protrusion. The positioning rod is located in the arc-shaped groove. When the rotating sleeve rotates, the position of the positioning rod moves relatively in the arc-shaped groove; preferably, the arc of the arc-shaped groove is 90 degrees.

[0013] As a specific implementation scheme, a plurality of balls are evenly arranged in the circumferential direction of the outer wall of the pin sleeve; the upper and lower walls of the annular groove are both conical surfaces, which match the outer wall of the balls.

[0014] As a specific implementation scheme, the cross section of the portion of the inner wall of the rotating sleeve where the ball is squeezed is square-like, and the cross section of the outer wall of the pin sleeve where the ball is located is circular.

[0015] As a specific implementation scheme, the outer wall of the pin sleeve is a three-section structure, divided into a lower section, a middle section and an upper section, and its outer diameter decreases in sequence; the structure of the inner wall of the rotating sleeve matches the three-section structure.

[0016] Furthermore, the balls are arranged on the side walls of the middle section.

[0017] As a specific implementation scheme, the inner wall or outer wall of the lower part of the pin sleeve is provided with a thread for connecting with the parts to be fastened; the lower part of the pin is provided with a thread for connecting with the parts to be fastened;

[0018] As a specific implementation scheme, a groove is provided on the top of the rotating sleeve.

[0019] As a specific implementation scheme, the pin comprises a column body and a column head, and an annular groove (201) is left between the column body and the column head.

[0020] Beneficial effects: Compared with the prior art, the locking device of the utility model has the characteristics of quick disassembly and assembly, easy operation, good repeatability positioning, small size, space saving and strong locking force. In addition to being applicable to conventional working scenarios, it also solves the use occasions that the prior art devices cannot meet, such as applications requiring full contact, space requirements, and large locking force, filling the application gap of the existing devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the locking device of the utility model.

[0022] Figure 2 It is a structural schematic diagram (cross-sectional view) of a rotary quick lock assembly in the locking device of the utility model.

[0023] Figure 3 It is a schematic diagram of the external structure of the pin sleeve in the locking device of the utility model.

[0024] Figure 4 It is a structural schematic diagram of the pin in the locking device of the utility model.

[0025] Figure 5 It is a schematic diagram (sectional view) of the matching state of the ball and the pin in the locking device of the utility model.

[0026] Figure 6 This is a working principle diagram of the ball and pin in the locking device of the utility model (a cross-sectional diagram in the loosened state).

[0027] Figure 7 This is a working principle diagram of the ball and pin in the locking device of the utility model (a cross-sectional diagram in the locked state).

[0028] Figure 8 This is a schematic diagram of the working state of the locking device of the utility model. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings.

[0030] Example

[0031] A universal quick locking device, such as Figure 1 As shown, it includes a rotary quick lock assembly 1 and a pin 2, and the pin 2 can be vertically inserted into the interior of the rotary quick lock assembly 1 from the bottom thereof.

[0032] like Figure 2 , Figure 3 and Figure 4As shown, the rotary quick lock assembly 1 includes a pin sleeve 101, a rotating sleeve 102, a connecting piece 103 and a ball 104. The rotating sleeve 102 is sleeved on the outer wall of the pin sleeve 101, and the two are connected together by the connecting piece 103. The lower end of the connecting piece 103 is connected to the top of the pin sleeve 101, and the upper end is a free end. The rotating sleeve 102 can rotate along the outer wall of the pin sleeve 101 with the cylinder of the connecting piece 103 as the axis; the pin 2 includes a cylinder 202 and a column head 203, and an annular groove 201 is reserved between the cylinder 202 and the column head 203. The ball 104 is movably arranged on the side wall of the pin sleeve 101 and penetrates the side wall of the pin sleeve 101. The inner wall of the rotating sleeve 102 can squeeze the ball 104 during the rotation process, so that part of it enters the annular groove 201, thereby realizing the locking of the rotary quick lock assembly 1 and the pin 2.

[0033] The outer wall of the pin sleeve 101 is a three-section structure, which is divided into a lower section, a middle section and an upper section, and its outer diameter decreases in sequence; the structure of the inner wall of the rotating sleeve 102 matches the three-section structure; the ball 104 is arranged on the side wall of the middle section. The lower part of the pin sleeve 101 has a thread on its inner wall or outer wall for connecting with the parts to be fastened; the lower part of the pin 2 has a thread for connecting with the parts to be fastened; the above design is used to connect the parts to be fastened. The top of the rotating sleeve 102 is provided with a groove 1022, which is convenient for inserting a screwdriver to rotate the rotating sleeve 102.

[0034] The specific way in which the pin sleeve 101 and the rotating sleeve 102 are connected through the connecting piece 103 is as follows: an annular groove 105 is left above the connection portion between the connecting piece 103 and the pin sleeve 101, and an annular protrusion 1021 is provided on the inner wall of the rotating sleeve 102, and the annular protrusion 1021 is stuck in the annular groove 105 to connect the pin sleeve 101 and the rotating sleeve 102 together; specifically, the connecting piece 103 is selected from a shoulder screw.

[0035] Furthermore, in order to limit the rotation angle of the rotating sleeve 102, a positioning rod 106 is provided on the top of the pin sleeve 101, and an arc-shaped groove is provided on the annular protrusion 1021. The positioning rod 106 is located in the arc-shaped groove. When the rotating sleeve 102 rotates, the position of the positioning rod 106 moves relatively in the arc-shaped groove; in this embodiment, the arc of the arc-shaped groove is 90 degrees.

[0036] like Figure 5 As shown, four balls 104 are evenly arranged in the circumferential direction of the outer wall of the pin sleeve 101 ; the upper and lower walls of the annular groove 201 are both conical surfaces, matching the outer wall of the balls 104 .

[0037] The principle of the ball 104 and the pin 2 cooperating and locking is as follows Figure 6 and Figure 7As shown, the portion of the inner wall of the rotating sleeve 102 that squeezes the ball 104 has a quasi-square cross-section (the four corners are arc-shaped, matching the outer walls of the four balls), and the outer wall of the pin sleeve 101 where the ball 104 is located has a circular cross-section. When the square rotates around the periphery of the circle, the displacement of the squeezed ball 104 is different at different positions, causing the ball 104 to partially enter the annular groove 201 of the pin 2, or completely leave the annular groove 201, thereby achieving the locking or loosening of the ball 104 and the pin 2.

[0038] like Figure 7 As shown, when in use, the rotary quick lock assembly 1 is connected to the spare part 4 to be fastened and placed through the thread on the pin sleeve 101, and then the whole assembly is sleeved on the pin column 2, and the pin column 2 is also connected to the part 3 with its own thread. Insert a screwdriver into the groove 1022 (the ball 104 and the pin column 2 are initially in a loose state, and the four balls are respectively located at the four corners of the square), rotate the rotary sleeve 102, squeeze the ball 104, and make the ball 104 partially enter the annular groove 201 of the pin column 2, and the outer wall of the ball 104 cooperates with the conical surface of the annular groove 201, so as to achieve the purpose of fastening the spare part 4 to the part 3. The rotary sleeve 102 is connected to the pin sleeve 101 through the shaft shoulder screw 103, and the positioning rod 106 plays a role in limiting the rotation angle.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A universal quick locking device, characterized in that: The invention comprises a rotary quick lock component (1) and a pin (2), wherein the pin (2) can be vertically inserted into the interior of the rotary quick lock component (1) from the bottom thereof, wherein the rotary quick lock component (1) comprises a pin sleeve (101), a rotary sleeve (102), a connecting piece (103) and a ball (104), wherein the rotary sleeve (102) is sleeved on the outer wall of the pin sleeve (101), and the two are connected together via the connecting piece (103), wherein the lower end of the connecting piece (103) is connected to the top of the pin sleeve (101), and the upper end is a free end. The rotating sleeve (102) can rotate along the outer wall of the pin sleeve (101) with the column of the connecting member (103) as the axis; the side wall of the pin column (2) is provided with an annular groove (201); the ball (104) is movably provided on the side wall of the pin sleeve (101) and penetrates the side wall of the pin sleeve (101); the inner wall of the rotating sleeve (102) can squeeze the ball (104) during the rotation process, so that part of the ball (104) enters the annular groove (201), thereby realizing the locking of the rotary quick lock assembly (1) and the pin column (2).

2. The universal quick locking device according to claim 1, characterized in that: An annular groove (105) is reserved above the connection portion between the connecting piece (103) and the pin sleeve (101), and an annular protrusion (1021) is provided on the inner wall of the rotating sleeve (102). The annular protrusion (1021) is stuck in the annular groove (105) to connect the pin sleeve (101) and the rotating sleeve (102) together.

3. The universal quick locking device according to claim 2, characterized in that: The connecting member (103) is selected from a shoulder screw.

4. The universal quick locking device according to claim 2, characterized in that: A positioning rod (106) is provided at the top of the pin sleeve (101), and an arc-shaped sliding groove is provided on the annular protrusion (1021). The positioning rod (106) is located in the arc-shaped sliding groove. When the rotating sleeve (102) rotates, the position of the positioning rod (106) moves relatively in the arc-shaped sliding groove.

5. The universal quick locking device according to claim 4, characterized in that: The arc angle of the arc-shaped slide groove is 90 degrees.

6. The universal quick locking device according to claim 1, characterized in that: A plurality of the balls (104) are evenly arranged in the circumferential direction of the outer wall of the pin sleeve (101); the upper and lower walls of the annular groove (201) are both conical surfaces, matching the outer wall of the balls (104).

7. The universal quick locking device according to claim 1, characterized in that: The portion of the inner wall of the rotating sleeve (102) that squeezes the ball (104) has a quasi-square cross section, and the outer wall of the pin sleeve (101) where the ball (104) is located has a circular cross section.

8. The universal quick locking device according to claim 1, characterized in that: The outer wall of the pin sleeve (101) is a three-section structure, divided into a lower section, a middle section and an upper section, and its outer diameter decreases in sequence; the structure of the inner wall of the rotating sleeve (102) matches the three-section structure.

9. The universal quick locking device according to claim 8, characterized in that: The rolling balls (104) are arranged on the side walls of the middle section.

10. The universal quick locking device according to claim 1, characterized in that: The inner wall or outer wall of the lower part of the pin sleeve (101) is provided with a thread for connecting with the spare part to be fastened; the lower part of the pin column (2) is provided with a thread for connecting with the spare part to be fastened.

11. The universal quick locking device according to claim 1, characterized in that: The top of the rotating sleeve (102) is provided with a groove (1022).

12. The universal quick locking device according to claim 1, characterized in that: The pin (2) comprises a column body (202) and a column head (203), and an annular groove (201) is left between the column body (202) and the column head (203).

Images