Quick connecting pin for corrugated pipe

Abstract

The utility model discloses a quick connecting pin for a corrugated pipe, which is characterized in that plugging caps (2) are arranged at two ends of the connecting pin (1), a button (3) is arranged in the middle of the connecting pin (1), and a fixing structure (4) matched with the button (3) is arranged in the connecting pin (1); the button (3) is used for controlling use of the fixing structure (4), the corrugated pipes at the two ends of the connecting pin (1) are fixed through the fixing structure (4), use is convenient, the fixing structure (4) is controlled by pressing the button (3) through the fixing structure (4) convenient to use, the efficiency of mounting and dismounting between the two corrugated pipes can be effectively improved, and due to the simple structure, the structure is simple, and the cost is low. The service life of the connecting pin (1) can be prolonged, the connection reliability is guaranteed, static friction between the connecting pin (1) and a product when an existing structure is assembled and disassembled is eliminated, the surface of the product is prevented from being scratched by the connecting pin (1), and the product quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bellows, and specifically relates to a quick connecting pin for a bellows. Background Art

[0002] The bellows connecting pin is a device that connects two bellows together.

[0003] The patent number is 201921732083.8, and a public specification published on June 30, 2020 discloses a quick-connecting pin for connecting a bellows, which relates to the technical field of bellows connectors, including a connecting pin body, a fixing block is provided at the center of the connecting pin body, a first clamping mechanism is provided at one end of the fixing block, and a second clamping mechanism is provided at the other end of the fixing block. The first clamping mechanism includes a spring, a connecting claw, a guide sleeve and a nut. The connecting pin body is sequentially covered with a spring, a connecting claw and a guide sleeve, and threads are provided at both ends of the connecting pin body. The connecting pin body and the nut are connected by threads, and the first clamping mechanism and the second clamping mechanism have the same structure and are symmetrically distributed. The two clamping mechanisms of the connecting pin of the utility model can be directly plugged into the two bellows to complete the fixed connection, and no tools are required, which saves time and effort, and has high fixed connection efficiency.

[0004] In the above-mentioned prior art, the clamping claw is of integral split type, and it is very easy to break after being installed and disassembled many times. Utility Model Content

[0005] The utility model aims to provide a bellows quick connection pin which has high installation and disassembly efficiency and long service life.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a bellows quick connecting pin, wherein both ends of the connecting pin are provided with blocking caps, the middle part of the connecting pin is provided with a button, and the interior of the connecting pin is provided with a fixing structure that cooperates with the button.

[0007] The fixing structure comprises a movable supporting pin arranged in the connecting pin, a compression spring is arranged between the movable supporting pin and the blocking cap, and a steel ball is arranged on the connecting pin.

[0008] The connecting pin is provided with an opening, and the steel ball is located in the opening.

[0009] The movable supporting pin is provided with a groove matched with the steel ball.

[0010] An end of the movable supporting pin close to the button is provided with an inclined surface matched with the button, and the end of the button located inside the connecting pin is conical.

[0011] The connecting pin is provided with a stepped hole, the button passes through the stepped hole, and the diameter of one end of the button located inside the connecting pin is larger than the inner diameter of the stepped hole.

[0012] A fastening nut is provided on the connecting pin.

[0013] The steel ball protrudes from the surface of the connecting pin.

[0014] The connecting pin is provided with a limiting hole.

[0015] The end of the button is located outside the connecting pin.

[0016] The technical effect of the utility model is as follows: through a convenient fixing structure, a button is used to control the fixing structure, which can effectively improve the installation and disassembly efficiency between the two corrugated pipes, and due to the simple structure, the service life of the connecting pin can be improved, the connection reliability is guaranteed, and the static friction between the connecting pin and the product during the installation and disassembly of the existing structure is eliminated, the product surface is avoided from being scratched by the connecting pin, and the product quality is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] This specification includes the following drawings, which show the following contents:

[0018] Figure 1 This is a schematic diagram of the structure of a bellows quick connection pin of the utility model;

[0019] Figure 2 for Figure 1 A schematic cross-sectional view of a connecting pin of a bellows quick connecting pin;

[0020] Figure 3 for Figure 1 A schematic diagram of the structure of the connecting pin end of a bellows quick connecting pin.

[0021] The markings in the figure are: 1. connecting pin; 2. blocking cap; 3. button; 4. fixing structure; 41. movable supporting pin; 42. compression spring; 43. steel ball; 44. opening; 45. groove; 46. step hole; 5. fastening nut; 6. limiting hole. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the specific implementation methods of the utility model by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution of the utility model and facilitating its implementation.

[0023] See also Figure 1-3 A bellows quick connecting pin, wherein blocking caps 2 are provided at both ends of the connecting pin 1, a button 3 is provided in the middle of the connecting pin 1, and a fixing structure 4 matched with the button 3 is provided inside the connecting pin 1; the button 3 is used to control the use of the fixing structure 4, and the fixing structure 4 is used to fix the bellows at both ends of the connecting pin 1, which is convenient for use.

[0024] The fixing structure 4 includes a movable supporting pin 41 arranged in the connecting pin 1, a compression spring 42 is provided between the movable supporting pin 41 and the blocking cap 2, and a steel ball 43 is provided on the connecting pin 1; through the lifting and lowering of the button 3 and the cooperation of the compression spring 42, the movable supporting pins 41 on both sides can be driven to move left and right, thereby controlling the position of the steel ball 43, and using the steel ball 43 to fix the bellows at both ends.

[0025] The connecting pin 1 is provided with an opening 44 , and the steel ball 43 is located in the opening 44 , so as to facilitate the movement of the steel ball 43 .

[0026] The movable support pin 41 is provided with a groove 45 which matches with the steel ball 43 , so as to store the steel ball 43 and prevent the steel ball 43 from falling off.

[0027] The end of the movable support pin 41 close to the button 3 is provided with an inclined surface that matches the button 3, and the end of the button 3 located in the connecting pin 1 is tapered; when the button 3 is pressed, the button 3 can push the movable support pins 41 on both sides to move toward both ends, so that the groove 45 can move to the position of the steel ball 43, so that the steel ball 43 can be squeezed into the groove 45 when installing and disassembling the bellows, to prevent jamming.

[0028] The connecting pin 1 is provided with a stepped hole 46 , and the button 3 passes through the stepped hole 46 . The diameter of one end of the button 3 located inside the connecting pin 1 is larger than the inner diameter of the stepped hole 46 , so as to prevent the button 3 from falling off from the connecting pin 1 .

[0029] A fastening nut 5 is provided on the connecting pin 1; the connecting pin 1 is fixedly installed by using the fastening nut 5.

[0030] The steel ball 43 protrudes from the surface of the connecting pin 1 ; the corrugated tube can be fixed on the connecting pin 1 by using the steel ball 43 protruding from the surface of the connecting pin 1 .

[0031] The connecting pin 1 is provided with a limiting hole 6 to prevent the steel ball 43 from falling off.

[0032] The end of the button 3 is located outside the connecting pin 1 , making it convenient for an operator to press the button 3 .

[0033] The technical effect of the utility model is as follows: through the easy-to-use fixing structure 4, the fixing structure 4 is controlled by pressing the button 3, so the installation and disassembly efficiency between the two corrugated pipes can be effectively improved, and due to the simple structure, the service life of the connecting pin 1 can be improved, the connection reliability is guaranteed, and the static friction between the connecting pin 1 and the product during the installation and disassembly of the existing structure is eliminated, the product surface is avoided from being scratched by the connecting pin 1, and the product quality is improved.

[0034] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A bellows quick-connect pin, characterized in that: Blocking caps (2) are provided at both ends of the connecting pin (1), a button (3) is provided in the middle of the connecting pin (1), and a fixing structure (4) matching with the button (3) is provided inside the connecting pin (1).

2. A bellows quick-connect pin according to claim 1, characterized in that: The fixing structure (4) comprises a movable supporting pin (41) arranged in the connecting pin (1), a compression spring (42) is arranged between the movable supporting pin (41) and the plugging cap (2), and a steel ball (43) is arranged on the connecting pin (1).

3. A bellows quick-connect pin according to claim 2, characterized in that: The connecting pin (1) is provided with an opening (44), and the steel ball (43) is located in the opening (44).

4. A bellows quick connector pin according to claim 2 or 3, characterized in that: The movable supporting pin (41) is provided with a groove (45) matching with the steel ball (43).

5. The bellows quick-connect pin according to claim 2, characterized in that: An end of the movable support pin (41) close to the button (3) is provided with an inclined surface matching the button (3); the end of the button (3) located inside the connecting pin (1) is tapered.

6. A bellows quick-connect pin according to claim 1, 2 or 5, characterized in that: The connecting pin (1) is provided with a stepped hole (46), the button (3) passes through the stepped hole (46), and the diameter of one end of the button (3) located inside the connecting pin (1) is larger than the inner diameter of the stepped hole (46).

7. The bellows quick-connect pin according to claim 1, characterized in that: The connecting pin (1) is provided with a fastening nut (5).

8. The bellows quick-connect pin according to claim 4, characterized in that: The steel ball (43) protrudes from the surface of the connecting pin (1).

9. A bellows quick-connect pin according to claim 8, characterized in that: The connecting pin (1) is provided with a limiting hole (6).

10. The bellows quick-connect pin according to claim 6, characterized in that: The end of the button (3) is located outside the connecting pin (1).

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