Steel ball type pneumatic elastic pin

Abstract

The utility model discloses a steel ball type pneumatic elastic pin, and relates to the field of elastic pins, the steel ball type pneumatic elastic pin comprises a mounting seat and a pin assembly inserted in the mounting seat, the pin assembly comprises a pin body, one end of the pin body is fixedly connected with a first circular truncated cone, the other end of the pin body is fixedly connected with a piston, and an assembling cavity matched with the pin assembly is formed in the inner wall of the mounting seat; three arc-shaped grooves distributed at equal intervals are formed in the inner wall of the assembling cavity, steel balls are arranged on the inner walls of the three arc-shaped grooves and make contact with the outer wall of the first circular truncated cone, and a mounting cavity is formed in the pin body. According to the pin assembly, the limiting assembly is arranged in the pin assembly, the pin assembly can be conveniently installed in the installation base through the limiting assembly, the screw and the second circular truncated cone are arranged in the pin body to be matched with the limiting assembly, and therefore the elastic force of a spring in the limiting assembly can be conveniently adjusted; the problem that an existing elastic pin elastic assembly is prone to damage and inconvenient to adjust is solved.

Description

Technical Field

[0001] This application relates to the field of flexible pins, and more particularly to ball-bearing pneumatic flexible pins. Background Technology

[0002] Flexible pins are widely used due to their advantages such as accurate positioning, resistance to detachment, and low cost. They are frequently installed in many mechanical and electronic products, such as automotive transmissions and power tools, to provide positioning, anti-rotation, and safety. In single-piece or small-batch production, they can be directly hammered in.

[0003] In some pneumatic components, elastic pins are often used to assist in the opening and closing of the air passage. However, the elasticity of the elastic element in the existing elastic pin has weakened, resulting in a decrease in the stability of the elastic pin. In order to ensure the airtight performance of the pneumatic component, it is inconvenient to replace the elastic element. Utility Model Content

[0004] To address the problem of decreased stability caused by the elastic decay of the elastic element in existing elastic pins, this application provides a ball-type pneumatic elastic pin.

[0005] The ball-type pneumatic elastic pin provided in this application adopts the following technical solution:

[0006] A ball-bearing pneumatic elastic pin includes a mounting base and a pin assembly inserted into the mounting base. The pin assembly includes a pin body, one end of which is fixedly connected to a frustum, and the other end of which is fixedly connected to a piston. The inner wall of the mounting base has an assembly cavity that matches the pin assembly, and the inner wall of the assembly cavity has three equally spaced arc-shaped grooves. The inner walls of the three arc-shaped grooves are all provided with steel balls, and the steel balls are in contact with the outer wall of the frustum. The pin body has an installation cavity inside, and the inner wall of the installation cavity has three equally spaced circular openings. The inner walls of the three circular openings are all provided with limit components.

[0007] By adopting the above technical solution, the opening of the assembly cavity in the mounting base facilitates the installation of the pin assembly. When the piston in the pin body moves, it is convenient to control the opening and closing of the air passage in the assembly cavity. When the pin body moves down, the two steel balls move closer to each other, and when the pin body moves up, the two steel balls move further apart. The setting of the limiting component facilitates fixing the pin body in the assembly cavity.

[0008] Preferably, the inner wall of the mounting cavity is fixedly connected to a mounting box, and the limiting component is installed in the mounting box.

[0009] By adopting the above technical solution, the installation cavity in the pin body facilitates the installation and fixing of the mounting box, and the mounting box facilitates the auxiliary installation of the limiting components.

[0010] Preferably, the limiting component includes a mounting sleeve fixedly connected to the circular opening and the mounting box, and a drive seat is slidably connected to the inner wall of the mounting sleeve, with a limiting pin fixedly connected to one side of the outer wall of the drive seat.

[0011] By adopting the above technical solution, the installation sleeve in the limiting component facilitates the sliding installation of the drive seat. When the drive seat moves, it can directly drive the limiting pin to move. When the limiting pin extends, it can easily engage the pin body in the assembly cavity.

[0012] Preferably, the inner wall of the mounting sleeve is slidably connected to a sliding seat, and the sliding seat and the drive seat are fixedly connected to the same spring, and a drive plate is fixedly connected to one side of the outer wall of the sliding seat.

[0013] By adopting the above technical solution, the spring between the sliding seat and the drive seat can easily drive the limit pin to always extend, and when the limit pin extends, it will lock the pin body in the assembly cavity.

[0014] Preferably, the inner walls of both sides of the mounting box are rotatably connected to the same screw, and the outer wall of the screw is screwed with a frustum.

[0015] By adopting the above technical solution, the screw can be rotated easily through the installation box, and the rotation of the screw directly drives the second truncated cone to slide in the cavity.

[0016] Preferably, the outer wall of the second truncated cone has three equally spaced sliding grooves, and the drive plate is slidably connected to the inner wall of the sliding grooves.

[0017] By adopting the above technical solution, the sliding groove on the second frustum facilitates the sliding installation of the drive plate. When the second frustum moves up and down, it is convenient to directly adjust the position of the drive plate, and when the position of the drive plate is adjusted, it is convenient to adjust the spring force.

[0018] Preferably, a circular groove is formed on the outer wall of the top of the truncated cone, and a rotating part is rotatably connected to the inner wall of the bottom of the circular groove, with one end of the drive shaft of the rotating part fixedly connected to the screw.

[0019] By adopting the above technical solution, the rotating part can be conveniently hidden and installed by setting the circular groove. The rotating part can be directly driven to rotate the screw, thereby facilitating the adjustment of the spring force in the limit assembly.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. This application solves the problem of existing elastic pin components being easily damaged and inconvenient to adjust by setting a limiting component in the pin assembly. The limiting component is set in the pin body with a screw and a frustum, which facilitates the adjustment of the spring force in the limiting component.

[0022] 2. This application uses a screw to drive the second truncated cone to move. When the second truncated cone moves, the position of the sliding seat can be easily adjusted via the drive plate. When the sliding seat moves, the spring force can be easily adjusted, thus effectively avoiding the problem of the limit pin failing to extend due to spring damage. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the ball-type pneumatic elastic pin in an embodiment of this application;

[0024] Figure 2 This is a schematic diagram illustrating the main structure of the pin assembly in the embodiments of this application;

[0025] Figure 3 This is a schematic diagram illustrating the main structure of the mounting box in the embodiments of this application;

[0026] Figure 4 This is a schematic diagram illustrating the cross-sectional structure of the mounting box, which is the main feature of this application.

[0027] Figure 5 This is a schematic diagram illustrating the cross-sectional structure of the limiting component, which is the main feature of this application embodiment;

[0028] Reference numerals in the attached drawings: 1. Mounting base; 2. Pin assembly; 3. Steel ball; 4. Pin body; 5. First truncated cone; 6. Limiting assembly; 7. Piston; 9. Mounting box; 10. Screw; 11. Second truncated cone; 12. Slide groove; 13. Mounting sleeve; 14. Sliding seat; 15. Spring; 16. Drive seat; 17. Limiting pin; 18. Drive plate. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0030] This application discloses a ball-type pneumatic elastic pin.

[0031] Reference Figure 1-3 A ball-type pneumatic elastic pin includes a mounting base 1 and a pin assembly 2 inserted into the mounting base 1.

[0032] Reference Figure 1-2The pin assembly 2 includes a pin body 4, one end of which is fixedly connected to a frustum 5, and the other end of which is fixedly connected to a piston 7. The inner wall of the mounting base 1 has an assembly cavity that matches the pin assembly 2, and the inner wall of the assembly cavity has three equally spaced arc-shaped grooves. Each of the three arc-shaped grooves has a steel ball 3 on its inner wall, and the steel ball 3 contacts the outer wall of the frustum 5. The pin body 4 has an installation cavity inside, and the inner wall of the installation cavity has three equally spaced circular openings. Each of the three circular openings has a limit component 6 on its inner wall. The installation cavity in the mounting base 1 facilitates the mounting of the pin assembly. When component 2 is installed, the piston 7 in the pin body 4 moves to control the opening and closing of the air passage in the assembly cavity. When the pin body 4 moves down, the two steel balls 3 move closer to each other, and when the pin body 4 moves up, the two steel balls 3 move further apart. The setting of the limiting component 6 makes it easy to fix the pin body 4 in the assembly cavity. The inner wall of the mounting cavity is fixedly connected to the mounting box 9, and the limiting component 6 is installed in the mounting box 9. The setting of the mounting sleeve 13 in the limiting component 6 makes it easy to slide the drive seat 16. When the drive seat 16 moves, it is easy to directly drive the limiting pin 17 to move. When the limiting pin 17 extends, it is easy to snap the pin body 4 into the assembly cavity.

[0033] Reference Figure 3-5 The limiting component 6 includes a mounting sleeve 13 fixedly connected to the circular opening and the mounting box 9, and a drive seat 16 slidably connected to the inner wall of the mounting sleeve 13. A limiting pin 17 is fixedly connected to one side of the outer wall of the drive seat 16. A sliding seat 14 is slidably connected to the inner wall of the mounting sleeve 13, and the same spring 15 is fixedly connected between the sliding seat 14 and the drive seat 16. A drive plate 18 is fixedly connected to one side of the outer wall of the sliding seat 14. The same screw 10 is rotatably connected to the inner walls of both sides of the mounting box 9, and a second truncated cone 11 is screwed to the outer wall of the screw 10. Three equally spaced sliding grooves 12 are opened on the outer wall of the second truncated cone 11. The drive plate 18 is slidably connected to the inner wall of the sliding groove 12. A circular groove is opened on the top outer wall of the first truncated cone 11, and a rotating part is rotatably connected to the bottom inner wall of the circular groove. One end of the drive shaft of the rotating part is fixedly connected to the screw 10.

[0034] In use, the circular groove facilitates the concealed installation of the rotating part. The rotating part allows for direct drive of the screw 10 to rotate, thereby facilitating the adjustment of the spring force of the spring 15 in the limiting assembly 6. When the screw 10 rotates, it directly drives the second frustum 11 to slide in the mounting box 9. The sliding groove 12 on the second frustum 11 facilitates the sliding installation of the drive plate 18. When the second frustum 11 moves up and down, it is easy to directly adjust the position of the drive plate 18. Adjusting the position of the drive plate 18 facilitates the adjustment of the spring force of the spring 15.

[0035] The implementation principle of the ball-type pneumatic elastic pin in this application embodiment is as follows: When the pin assembly 2 is inserted into the mounting base 1, the two steel balls 3 move closer to each other when the pin body 4 moves down in the mounting base 1, and move further away from each other when the pin body 4 moves up. The movement of the pin assembly 2 in the mounting base 1 facilitates the control of the air passage in the mounting base 1. When the elastic force of the spring 15 in the limiting assembly 6 in the pin assembly 2 decreases, the rotating part is rotated first to drive the screw 10 to rotate. When the screw 10 rotates, it directly drives the second truncated cone 11 to move. When the second truncated cone 11 moves down, it directly pushes the sliding seat 14 to move through the drive plate 18. When the sliding seat 14 moves towards the drive seat 16, it adjusts the elastic force of the spring 15, thereby avoiding the problem that the limiting pin 17 cannot extend due to the decrease in the elastic force of the spring 15.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. Steel ball type pneumatic elastic pin comprising a mounting seat (1) and a pin assembly (2) inserted into the mounting seat (1), characterized in that: The pin assembly (2) includes a pin body (4), and one end of the pin body (4) is fixedly connected with a circular table one (5), the other end of the pin body (4) is fixedly connected with a piston (7), the inner wall of the mounting seat (1) is provided with an assembly cavity matched with the pin assembly (2), and the inner wall of the assembly cavity is provided with three equidistantly distributed arc-shaped grooves, the inner wall of each of the three arc-shaped grooves is provided with a steel ball (3), and the steel ball (3) and the outer wall of the circular table one (5) are in contact, the inside of the pin body (4) is provided with a mounting cavity, and the inner wall of the mounting cavity is provided with three equidistantly distributed circular ports, and the inner wall of each of the three circular ports is provided with a limiting assembly (6).

2. The steel ball type aerodynamic-elastic pin according to claim 1, characterized in that: The inner wall of the mounting cavity is fixedly connected with a mounting box (9), and the limiting assembly (6) is mounted in the mounting box (9).

3. The steel ball type aerodynamic-elastic pin according to claim 2, characterized in that: The limiting assembly (6) includes a mounting sleeve (13) fixedly connected with the circular port and the mounting box (9), and the inner wall of the mounting sleeve (13) is slidably connected with a driving seat (16), and one side of the outer wall of the driving seat (16) is fixedly connected with a limiting pin (17).

4. The steel ball type aerodynamic-elastic pin according to claim 3, characterized in that: The inner wall of the mounting sleeve (13) is slidably connected with a sliding seat (14), and the sliding seat (14) and the driving seat (16) are fixedly connected with the same spring (15), and one side of the outer wall of the sliding seat (14) is fixedly connected with a driving plate (18).

5. The steel ball type aerodynamic-elastic pin according to claim 4, characterized in that: Both sides of the inner wall of the mounting box (9) are rotatably connected with the same screw rod (10), and the outer wall of the screw rod (10) is screwed with a circular table two (11).

6. The steel ball type aerodynamic-elastic pin according to claim 5, characterized in that: The outer wall of the circular table two (11) is provided with three equidistantly distributed sliding grooves (12), and the driving plate (18) is slidably connected to the inner wall of the sliding groove (12).

7. The steel ball type aerodynamic-elastic pin according to claim 6, characterized in that: The outer wall of the top of the circular table one (5) is provided with a circular groove, and the bottom inner wall of the circular groove is rotatably connected with a rotating part, and one end of the transmission shaft of the rotating part is fixedly connected with the screw rod (10).

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