Pneumatic connector with self-locking function

Abstract

The pneumatic connector with the self-locking function comprises a lower side female head and a middle machine body, the lower side female head is installed and connected to the middle position of the lower end of the middle machine body, and a second rapid fixing mechanism is arranged on the threaded peripheral side of the middle machine body. A first quick fixing mechanism is arranged above the second quick fixing mechanism and located on the middle machine body, an upper side male head is arranged on the inner side of the upper end of the middle machine body, an outer rubber disc is arranged at the upper end of the upper side male head, and an outer air pressure hose is arranged in the middle of the interior of the outer rubber disc and the upper side male head. The pneumatic connector with the self-locking function has the technical effects that self-locking is carried out through the first quick fixing mechanism, and then the fixing effect is achieved through the second quick fixing mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic connectors, in particular to a pneumatic connector with a self-locking function. Background Art

[0002] A pneumatic connector is a quick connector widely used in air configuration and pneumatic tools, which can connect or disconnect pipes without any tools.

[0003] The existing Chinese patent CN212745398U discloses a pneumatic connector on March 19, 2021, which includes an upper connector, a lower connector and a sealing ring; a first through hole for ventilation is provided in the upper connector, and a first convex edge is provided on the inner side wall of the first through hole; the sealing ring is arranged in the first through hole and abuts against the first convex edge, and a skeleton for enhancing the strength of the sealing ring is arranged in the sealing ring; a second through hole for communicating with the first through hole is provided in the lower connector, and the lower connector is connected to the first through hole and abuts against the sealing ring to fix the sealing ring.

[0004] However, when the above pneumatic connector is quickly installed and connected, the whole cannot be effectively fixed, lacking a two-layer installation and fixing structure, and only adopting a one-layer quick installation and fixing, which makes it easy to fall off during connection. Summary of the Utility Model

[0005] The utility model discloses a pneumatic connector with a self-locking function, aiming to solve the technical problem that when the above pneumatic connector is quickly installed and connected, the whole cannot be effectively fixed, lacking a two-layer installation and fixing structure, and only adopting a one-layer quick installation and fixing, which makes it easy to fall off during connection.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] A pneumatic connector with a self-locking function includes a lower female head and an intermediate body. The lower female head is installed and connected to the middle position at the lower end of the intermediate body. A second quick-fixing mechanism is arranged on the threaded circumference of the intermediate body. Above the second quick-fixing mechanism, a first quick-fixing mechanism is arranged on the intermediate body. An upper male head is arranged inside the upper end of the intermediate body. An external rubber disc is arranged at the upper end of the upper male head. An external air pressure hose is arranged in the middle of the external rubber disc and the upper male head.

[0008] The first quick fixing mechanism includes an outer pull plate, a hollow sleeve, a resistance spring, an outer sleeve ring, a positioning shaft and chamfered corners. The inner end of the outer pull plate is provided with a positioning shaft, the inner end of the positioning shaft is provided with a chamfered corner, the outer sleeve ring is provided on the circumference of the positioning shaft, the outer end of the outer sleeve ring is provided with a resistance spring, the resistance spring and the circumference of the outer sleeve ring are provided with a hollow sleeve, and the hollow sleeve is fixedly connected to the intermediate body.

[0009] By providing a lower female head structure, the middle body can be threadedly rotated and connected to the air hole of the external equipment through the lower female head at the lower end, and then the personnel will sleeve the upper male head into the middle of the interior of the middle body. The upper male head will resist the positioning shaft rod of the first quick fixing mechanism during the sleeve connection, so that the positioning shaft rod moves outward. After the upper male head is sleeved into the specified position, the first quick fixing mechanism will self-lock and fix the upper male head to prevent it from falling off. Then the personnel will rotate the second quick fixing mechanism on the periphery of the middle body for a second locking and fixing, so as to prevent it from falling off during use. The external rubber disc and the internal middle of the upper male head are sleeved with an external air pressure hose, and the external rubber disc and the upper male head can effectively wrap the air pressure hose, so as to play a good protective role.

[0010] In a preferred embodiment, the second quick fixing mechanism includes a plug-in end column, a rotating screw cover, a limiting sleeve, an arc-shaped contact groove, a connecting spring and a pulling end ring. An arc-shaped contact groove is arranged inside the lower end of the rotating screw cover, a limiting sleeve is arranged on the inner side of the arc-shaped contact groove, a pulling end ring is arranged on the inner side of the limiting sleeve, a connecting spring is arranged between the pulling end ring and the limiting sleeve, and a plug-in end column is arranged on the inner end of the pulling end ring through the connecting spring and the limiting sleeve, and the limiting sleeve is fixedly connected to the intermediate body.

[0011] By providing a second quick fixing mechanism structure, it can be locked and fixed for a second time to avoid loosening and falling off.

[0012] In a preferred solution, two limiting sleeves are provided, and the limiting sleeves are symmetrically arranged in the inner through holes at both ends of the middle body.

[0013] By providing the intermediate body structure, the limiting sleeve is convenient for corresponding installation and fixation.

[0014] In a preferred solution, the rotating screw cap is threadably connected to the threaded circumference of the intermediate body.

[0015] The intermediate body structure is provided so that the rotating screw cap can be conveniently rotated forward and backward for use.

[0016] In a preferred solution, two first quick fixing mechanisms are provided, and the first quick fixing mechanisms are symmetrically arranged on the outer end of the middle body.

[0017] By providing an intermediate body structure, the first quick-fixing mechanism can be used with self-locking on both sides.

[0018] In a preferred embodiment, the upper male connector is sleeved in the middle inside the intermediate body and is internally through.

[0019] By providing an intermediate body structure, the upper male connector can be correspondingly sleeved and installed.

[0020] In a preferred embodiment, the inner ends of the first quick-fixing mechanism and the second quick-fixing mechanism are snapped into the outer wall of the upper male connector.

[0021] By providing the first quick-fixing mechanism and the second quick-fixing mechanism structures, the first and second locking and fixing functions are achieved.

[0022] As can be seen from the above, a pneumatic connector with a self-locking function includes a lower female connector and an intermediate body. The lower female connector is installed and connected to the middle position at the lower end of the intermediate body. A second quick-fixing mechanism is provided on the threaded circumference of the intermediate body. Above the second quick-fixing mechanism, a first quick-fixing mechanism is provided on the intermediate body. An upper male connector is provided inside the upper end of the intermediate body. An external rubber disc is provided at the upper end of the upper male connector. An external pneumatic hose is provided in the middle inside the external rubber disc and the upper male connector. The pneumatic connector with a self-locking function provided by the present utility model has the technical effect of self-locking through the first quick-fixing mechanism and then playing a fixing role through the second quick-fixing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. is a three-dimensional structural schematic diagram of a pneumatic connector with a self-locking function proposed by the present utility model.

[0024] Figure 2 FIG. is a side sectional structural schematic diagram of a pneumatic connector with a self-locking function proposed by the present utility model.

[0025] Figure 3 FIG. is a structural schematic diagram of the first quick-fixing mechanism of a pneumatic connector with a self-locking function proposed by the present utility model.

[0026] Figure 4 FIG. is a structural schematic diagram of the second quick-fixing mechanism of a pneumatic connector with a self-locking function proposed by the present utility model.

[0027] Figure 5 is Figure 4 FIG. is an enlarged structural schematic diagram of area A of a pneumatic connector with a self-locking function proposed by the present utility model.

[0028] In the attached drawings: 1. External air pressure hose; 2. External rubber disc; 3. Upper male head; 4. Second quick fixing mechanism; 41. Plug-in end column; 42. Rotating screw cover; 43. Limit sleeve; 44. Arc-shaped resistance groove; 45. Connecting spring; 46. Pull end ring; 5. Lower female head; 6. Middle body; 7. First quick fixing mechanism; 71. External pull disc; 72. Hollow sleeve; 73. Resistance spring; 74. External sleeve ring; 75. Positioning shaft; 76. Chamfered corners. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] Reference Figures 1 - 5 , a pneumatic joint with a self-locking function, comprising a lower female head 5 and an intermediate body 6, wherein the lower female head 5 is fixedly connected to the middle position of the lower end of the intermediate body 6, and the intermediate body 6 can be threadedly rotatably connected to an external device through the lower female head 5 at the lower end, and a second quick fixing mechanism 4 is threadedly rotatably installed on the threaded circumference of the intermediate body 6, so that secondary locking and fixing can be performed, and the upper part of the second quick fixing mechanism 4 is located above the intermediate body 6 and is fixedly connected to a first quick fixing mechanism 7, so that self-locking and fixing can be performed, and an upper male head 3 is sleeved on the inner side of the upper end of the intermediate body 6, so as to facilitate corresponding installation, and an external rubber disc 2 is adhesively fixed to the upper end of the upper male head 3, and an external air pressure hose 1 is sleeved between the internal middle of the external rubber disc 2 and the upper male head 3, and the external rubber disc 2 and the upper male head 3 can effectively wrap the air pressure hose, so that it plays a good protective role;

[0032] The first quick fixing mechanism 7 includes an outer pull disc 71, a hollow sleeve 72, a contact spring 73, an outer collar 74, a positioning shaft rod 75 and a chamfer 76. The inner end of the outer pull disc 71 is fixedly connected to the positioning shaft rod 75. When a person pulls the outer pull disc 71 outwards, the positioning shaft rod 75 is driven to move outwards. A chamfer 76 is provided at the inner end of the positioning shaft rod 75. When the upper male head 3 contacts the chamfer 76 of the positioning shaft rod 75, it is convenient for the upper male head 3 to push against the positioning shaft rod 75 to move outwards. An outer collar 74 is fixedly connected to the circumferential side of the positioning shaft rod 75. A contact spring 73 is fixedly connected to the outer end of the outer collar 74. The contact spring 73 pulls the positioning shaft rod 75 by pulling the outer collar 74. A hollow sleeve 72 is sleeved on the circumferential sides of the contact spring 73 and the outer collar 74, so that the contact spring 73 and the outer collar 74 can be positioned and moved in the hollow sleeve 72. Due to the elastic contact force of the contact spring 73, the contact spring 73 pushes against the outer collar 74, and then drives the positioning shaft rod 75 to be located inside the middle body 6. When the upper male head 3 pushes against it, the positioning shaft rod 75 moves outwards. After the upper male head 3 reaches the installation position, the restoring elastic force generated by the contact spring 73 drives the outer collar 74 to move inwards, and then the positioning shaft rod 75 is buckled on the outer wall of the upper male head 3, so as to play a self-locking role. The hollow sleeve 72 is fixedly connected to the middle body 6, and the hollow sleeve 72 can be stably placed.

[0033] Refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 , in a preferred embodiment, the second quick fixing mechanism 4 includes a plug-in end post 41, a rotary screw cap 42, a limit sleeve 43, an arc contact groove 44, a connecting spring 45 and a pulling end ring 46. An arc contact groove 44 is provided inside the lower end of the rotary screw cap 42. A limit sleeve 43 is sleeved inside the arc contact groove 44. The limit sleeve 43 is fixedly connected to the middle body 6, so that it can be stably placed. A pulling end ring 46 is sleeved inside the limit sleeve 43. A connecting spring 45 is fixedly connected between the pulling end ring 46 and the limit sleeve 43. The inner end of the pulling end ring 46 passes through the connecting spring 45 and the limit sleeve 43 and is sleeved with a plug-in end post 41. When the rotary screw cap 42 pushes against the plug-in end post 41 through the arc contact groove 44, the plug-in end post 41 drives the pulling end ring 46 to move inwards. The plug-in end post 41 is fixed on the outer wall of the upper male head 3, so as to play a secondary fixing role. When the pulling end ring 46 drives the connecting spring 45 inside the limit sleeve 43 to be stretched, the connecting spring 45 generates restoration. When the rotary screw cap 42 removes the pushing force on the plug-in end post 41, the connecting spring 45 drives the pulling end ring 46 to return to its original position, and then the pulling end ring 46 drives the plug-in end post 41 to return, so as to remove the fixation of the plug-in end post 41 on the outer wall of the upper male head 3;

[0034] There are two fixed limit sleeves 43 in total, and the limit sleeves 43 are symmetrically fixed in the inner through holes at both ends of the middle body 6, so that they can be used for limiting on both sides;

[0035] The rotary screw cap 42 is rotationally connected to the threaded periphery of the middle body 6 by threads, so that it can be used for rotational lifting.

[0036] Refer to Figure 1 and Figure 3 In a preferred embodiment, there are two fixed first quick-fixing mechanisms 7 in total, and the first quick-fixing mechanisms 7 are symmetrically fixed on the outer ends of the middle body 6, so that they can be used for symmetric locking on both sides.

[0037] Refer to Figure 1 and Figure 2 In a preferred embodiment, the upper male head 3 is sleeved in the middle of the inside of the middle body 6 and is internally through, so that it can be correspondingly installed and fixed, and the inside is through, making it convenient for gas to flow.

[0038] Refer to Figure 1 and Figure 2 In a preferred embodiment, the inner ends of the first quick-fixing mechanism 7 and the second quick-fixing mechanism 4 are buckled in the outer wall of the upper male head 3, so that they can play a role of secondary fixation.

[0039] Working principle: When in use, the middle body 6 can be rotationally connected to the air hole of an external device through the lower female head 5 at the lower end. Then, the user sleeved the upper male head 3 into the middle of the inside of the middle body 6. During the sleeving process, the upper male head 3 abuts against the positioning shaft rod 75 of the first quick-fixing mechanism 7, causing the positioning shaft rod 75 to move outwards. After the upper male head 3 is sleeved to the specified position, the first quick-fixing mechanism 7 self-locks to fix the upper male head 3 to prevent the upper male head 3 from falling off. Then, the user rotates the second quick-fixing mechanism 4 on the periphery of the middle body 6 for secondary locking and fixing, so as to prevent falling off during use. An external air pressure hose 1 is sleeved in the middle of the inside of the external rubber disc 2 and the upper male head 3. The external rubber disc 2 and the upper male head 3 can effectively wrap the air pressure hose, so as to play a good protective role.

[0040] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The substitution may be the substitution of part of the structure, device, method steps, or a complete technical solution. Any equivalent substitution or change made according to the technical solution of the present invention and its inventive concept should be covered within the protection scope of the present invention.

Claims

1. A pneumatic joint with a self-locking function, comprising a lower female connector (5) and an intermediate body (6), wherein the lower female connector (5) is installed and connected to the middle position of the lower end of the intermediate body (6), characterized in that: A second quick fixing mechanism (4) is arranged on the threaded circumference of the intermediate body (6); a first quick fixing mechanism (7) is arranged on the intermediate body (6) above the second quick fixing mechanism (4); an upper male head (3) is arranged on the inner side of the upper end of the intermediate body (6); an external rubber disc (2) is arranged on the upper end of the upper male head (3); an external air pressure hose (1) is arranged in the middle of the external rubber disc (2) and the upper male head (3); The first quick fixing mechanism (7) comprises an outer pull plate (71), a hollow sleeve (72), a resistance spring (73), an outer sleeve ring (74), a positioning shaft (75) and a rounded corner (76); the inner end of the outer pull plate (71) is provided with a positioning shaft (75); the inner end of the positioning shaft (75) is provided with a rounded corner (76); the outer sleeve ring (74) is provided on the peripheral side of the positioning shaft (75); the outer end of the outer sleeve ring (74) is provided with a resistance spring (73); the peripheral side of the resistance spring (73) and the outer sleeve ring (74) is provided with a hollow sleeve (72); the hollow sleeve (72) is fixedly connected to the intermediate body (6).

2. A pneumatic joint with self-locking function according to claim 1, characterized in that: The second quick fixing mechanism (4) comprises a plug-in terminal column (41), a rotating screw cover (42), a limiting sleeve (43), an arc-shaped contact groove (44), a connecting spring (45) and a pulling end ring (46); an arc-shaped contact groove (44) is arranged inside the lower end of the rotating screw cover (42); a limiting sleeve (43) is arranged on the inner side of the arc-shaped contact groove (44); a pulling end ring (46) is arranged on the inner side of the limiting sleeve (43); a connecting spring (45) is arranged between the pulling end ring (46) and the limiting sleeve (43); the inner end of the pulling end ring (46) passes through the connecting spring (45) and the limiting sleeve (43) and is provided with a plug-in terminal column (41); and the limiting sleeve (43) is fixedly connected to the intermediate body (6).

3. A pneumatic joint with self-locking function according to claim 2, characterized in that: There are two limit sleeves (43) in total, and the limit sleeves (43) are symmetrically arranged in the inner through holes at both ends of the middle body (6).

4. A pneumatic joint with self-locking function according to claim 2, characterized in that: The rotating screw cover (42) is threadedly rotatably connected to the threaded circumference of the intermediate body (6).

5. A pneumatic joint with a self-locking function according to claim 1, characterized in that: A total of two of the first quick fixing mechanisms (7) are provided, and the first quick fixing mechanisms (7) are symmetrically arranged on the outer end of the middle body (6).

6. A pneumatic joint with a self-locking function according to claim 1, characterized in that: The upper male head (3) is sleeved in the middle of the middle body (6) and penetrates the inside.

7. A pneumatic joint with a self-locking function according to claim 1, characterized in that: The inner ends of the first quick fixing mechanism (7) and the second quick fixing mechanism (4) are snapped into the outer wall of the upper male head (3).

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