Convenient pneumatic connector convenient to operate with one hand

Abstract

The invention discloses a convenient pneumatic connector convenient to operate by one hand, and relates to the technical field of pneumatic connectors, the convenient pneumatic connector comprises a fixed female base, the center of the front side of the fixed female base is fixedly connected with a female base butt joint and an outer plug bush, and the outer plug bush is concentrically arranged on the outer side of the female base butt joint; and an air pressure preliminary locking mechanism is arranged between the female seat butt joint and the outer plug bush, the connecting male head is fixedly inserted into the front side of the outer plug bush, and in the insertion process of the connecting male head, the air pressure preliminary locking mechanism generates preliminary pre-fixing force on the connecting male head under the action of internal air pressure, so that the connecting male head is prevented from being easily separated. And then the locking sliding sleeve slides forwards along the outer wall of the outer plug bush and extrudes the elastic clamping jaw to firmly lock the connecting male head in the outer plug bush, so that rapid and stable connection between the fixed female seat and the connecting male head is realized. The whole operation process can be completed by only one hand, the operation convenience and efficiency are greatly improved, and the tool is particularly suitable for the working condition that the space is narrow or an operator needs to hold other tools by the other hand.

Description

Technical Field

[0001] This invention relates to the field of pneumatic connector technology, and specifically to a convenient pneumatic connector that is easy to operate with one hand. Background Technology

[0002] As a critical connecting element in pneumatic systems, the performance of pneumatic connectors directly affects the system's reliability, efficiency, and safety. In scenarios such as engineering machinery, automated production lines, and mobile equipment, there are often situations requiring frequent connector insertion and removal, limited installation space, or the risk of continuous vibration and accidental dragging. Traditional pneumatic connectors mostly employ threaded connections, compression fittings, or quick-connect designs. Quick-connect connectors achieve initial locking by springing steel balls or claws into the connector groove upon insertion, but usually require manual sliding or rotation of the sleeve to complete the final locking and unlocking, often requiring two-handed operation and posing a risk of accidental loosening under strong vibration. Therefore, we propose a convenient pneumatic connector that allows for one-handed operation. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a convenient pneumatic connector that is easy to operate with one hand, thereby solving the aforementioned problems.

[0004] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0005] A convenient pneumatic connector for easy one-handed operation includes a fixed female base. A female base connector and an outer sleeve are fixedly connected to the center of the front side of the fixed female base. The outer sleeve is concentrically disposed on the outside of the female base connector, and a pneumatic initial locking mechanism is provided between the female base connector and the outer sleeve. A connecting male connector is inserted and fixedly attached to the front side of the outer sleeve, and the front end of the connecting male connector is connected and fixedly attached to an external pipe. A limiting ring seat is provided at the rear end of the outer wall of the connecting male connector, and a sliding locking mechanism is fixedly installed on the front side of the outer sleeve corresponding to the limiting ring seat. The sliding locking mechanism includes an elastic gripper. A clamping protrusion is fixedly attached to the front end of the inner wall of the elastic gripper, and a locking slide is movably sleeved on the front end of the outer sleeve. The locking slide pushes the elastic gripper to retract, so that the clamping protrusion abuts against the front end of the limiting ring seat.

[0006] Furthermore, the outer wall of the elastic gripper is provided with multiple locking ratchet teeth at equal intervals in the front half, and the inner wall of the locking sleeve is fixedly connected with locking pawls corresponding to the positions of the multiple elastic grippers, and the locking pawls match the locking ratchet teeth.

[0007] Furthermore, the outer sleeve has multiple through holes on the front side of its sidewall, and the rear sides of multiple elastic claws are respectively fixedly connected to the rear sidewall of the through holes. The outer sleeve has a guide slope on the side corresponding to the through holes. The front end of the guide slope is flush with the inner side of the snapping claw, and the rear end of the guide slope is inclined upward and flush with the upper rear side of the elastic claw.

[0008] Furthermore, the rear end of the guide ramp is provided with a guide angle.

[0009] Furthermore, a piston sealing seat is inserted and fixed to the rear end of the male connector, and the rear end of the piston sealing seat is sleeved on the front end of the female connector. An annular sealing ring is fixedly connected to the outer wall of the piston sealing seat corresponding to the contact surface of the female connector and the male connector.

[0010] Furthermore, the pneumatic pressure initial locking mechanism includes a pneumatic pressure connecting seat, with an exhaust check valve and a vent valve respectively provided on the upper and lower sides of the pneumatic pressure connecting seat. Both the exhaust check valve and the vent valve are connected to the front area of ​​the outer sleeve, and the outer wall of the outer sleeve has a connecting hole corresponding to the exhaust check valve and the vent valve.

[0011] Furthermore, a fixing retaining ring is fixedly connected to the front outer wall of the outer sleeve, and a reset spring is sleeved on the outer wall of the outer sleeve. The two sides of the reset spring are fixedly connected to the locking slide and the fixing retaining ring, respectively.

[0012] Furthermore, the side wall of the locking sleeve is threaded with a positioning bolt near the rear side, and the inner side of the connecting screw hole of the positioning bolt penetrates the locking sleeve.

[0013] The beneficial effects of this invention are as follows:

[0014] 1. When using this invention, the operator holds the male connector with one hand, aligns it with the female connector and outer sleeve on the front side of the fixed female connector, and inserts it axially. During insertion, the rear end of the male connector first contacts the pneumatic initial locking mechanism. As the insertion depth increases, the pneumatic initial locking mechanism generates an initial pre-fixing force on the male connector under the action of internal air pressure, preventing it from easily coming out. When the limiting ring seat on the outer wall of the male connector moves to the rear side of the clamping protrusion of the elastic claw, the operator pushes the locking sleeve axially. The locking sleeve slides forward along the outer wall of the outer sleeve, squeezing the outer wall of the elastic claw and forcing the elastic claw to retract towards the center. At this time, the clamping protrusion at the front end of the inner wall of the elastic claw moves inward and finally abuts tightly against the front end face of the limiting ring seat, thereby firmly locking the male connector in the outer sleeve, realizing a quick and stable connection between the fixed female connector and the male connector. When disassembly is required, simply open the pneumatic initial locking mechanism, unlock the locking sleeve to release the pressure on the elastic gripper, and then the elastic gripper will return to its open state under its own elasticity, separating the clamping protrusion from the limiting ring seat. At this point, the connecting male can be easily pulled out. The entire operation can be completed with only one hand, which greatly improves the convenience and efficiency of operation. It is especially suitable for situations where space is limited or the operator needs to hold other tools with one hand.

[0015] 2. When the locking sleeve is pushed forward, the engaging pawl pushes the front side of the elastic gripper inward, and the engaging pawl and engaging ratchet teeth mesh together to form a one-way locking structure. This design effectively prevents the locking sleeve from retracting under conditions of vibration, accidental contact, or air pressure fluctuations, ensuring that the elastic gripper teeth always reliably clamp the limiting ring seat. When the locking sleeve rotates, causing the engaging pawl and elastic gripper teeth to misalign, the front end of the elastic gripper teeth opens outward, separating the clamping protrusion from the limiting ring seat. At the same time, when the locking sleeve can move backward, the inner side of the engaging pawl will slide upward along the guide slope, returning to the upper rear end of the elastic gripper teeth, facilitating accurate and smooth re-engagement with the engaging ratchet teeth during the next locking operation, avoiding the problem of the engaging pawl teeth failing to lock properly due to misalignment.

[0016] 3. When the male connector is inserted into the outer sleeve, the piston seal seat pushes the air in the front area of ​​the female connector and the outer sleeve to be discharged unidirectionally through the exhaust check valve, allowing the piston seal seat to be smoothly inserted into place. Once the piston seal seat is fully inserted, a relatively enclosed space is formed between the air pressure connector and the piston seal seat, creating a preliminary air pressure lock. This provides a certain pre-tightening force to the male connector, preventing it from accidentally dislodging before the sliding locking mechanism is fully engaged. This facilitates subsequent one-handed locking operations. When unlocking is required, opening the vent valve releases the compressed air in this enclosed area, releasing the preliminary air pressure lock and allowing the male connector to be easily pulled out. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a perspective view of the present invention after the locking sleeve has been removed;

[0019] Figure 3 This is a side sectional view of the present invention;

[0020] Figure 4 This is the present invention. Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a front sectional view of the present invention.

[0022] Reference numerals: 1. Fixed female seat; 2. Female seat connector; 3. Connecting male head; 4. Piston sealing seat; 5. Annular sealing ring; 6. Outer sleeve; 7. Elastic gripper; 8. Clamping protrusion; 9. Limiting ring seat; 10. Locking slide sleeve; 11. Engaging ratchet; 12. Engaging ratchet tooth; 13. Return spring; 14. Fixed retaining ring; 15. Guide slope; 16. Air pressure connecting seat; 17. Exhaust check valve; 18. Vent valve; 19. Guide angle; 20. Positioning bolt. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0024] Please see Figure 1 - Figure 5 This invention provides a convenient pneumatic connector for easy one-handed operation, including a fixed female base 1. A female base connector 2 and an outer sleeve 6 are fixedly connected to the center of the front side of the fixed female base 1. The outer sleeve 6 is concentrically arranged on the outside of the female base connector 2, and a pneumatic initial locking mechanism is provided between the female base connector 2 and the outer sleeve 6. A connecting male connector 3 is inserted and fixedly connected to the front side of the outer sleeve 6, and the front end of the connecting male connector 3 is connected and fixedly connected to an external pipe. A limiting ring seat 9 is provided at the rear end of the outer wall of the connecting male connector 3, and a sliding locking mechanism is fixedly installed on the front side of the side wall of the outer sleeve 6 corresponding to the limiting ring seat 9. The sliding locking mechanism includes an elastic claw 7, a clamping protrusion 8 is fixedly fixed at the front end of the inner wall of the elastic claw 7, and a locking slide 10 is movably sleeved at the front end of the outer sleeve 6. The locking slide 10 pushes the elastic claw 7 to retract, so that the clamping protrusion 8 abuts against the front end of the limiting ring seat 9.

[0025] When using this device, the operator holds the male connector 3 with one hand, aligns it with the female connector 2 and the outer sleeve 6 on the front side of the fixed female connector 1, and inserts it axially. During insertion, the rear end of the male connector 3 first contacts the pneumatic initial locking mechanism. As the insertion depth increases, the pneumatic initial locking mechanism generates an initial pre-fixing force on the male connector 3 under the action of internal air pressure, preventing it from easily coming out. When the limiting ring seat 9 on the outer wall of the male connector 3 moves to the rear side of the clamping protrusion 8 of the elastic claw 7, the operator pushes the locking slide 10 axially. The locking slide 10 slides forward along the outer wall of the outer sleeve 6, squeezing the outer wall of the elastic claw 7 and forcing the elastic claw 7 to retract towards the center. At this time, the clamping protrusion 8 at the front end of the inner wall of the elastic claw 7 moves inward and finally abuts tightly against the front end face of the limiting ring seat 9, thereby firmly locking the male connector 3 in the outer sleeve 6, realizing a quick and stable connection between the fixed female connector 1 and the male connector 3. When disassembly is required, simply open the pneumatic initial locking mechanism, unlock the locking sleeve 10 to release it from the pressure on the elastic gripper 7, and then the elastic gripper 7 will return to its open state under its own elasticity, separating the clamping protrusion 8 from the limiting ring seat 9. At this time, the connecting male head 3 can be easily pulled out. The entire operation can be completed with only one hand, which greatly improves the convenience and efficiency of operation, and is especially suitable for working conditions where space is limited or the operator needs to hold other tools with one hand.

[0026] In this embodiment, preferably, the outer half of the elastic gripper 7 has multiple equally spaced engaging ratchet teeth 12, and the inner wall of the locking sleeve 10 is fixedly connected with engaging pawls 11 corresponding to the positions of the multiple elastic grippers 7. The engaging pawls 11 and engaging ratchet teeth 12 are matched. When the locking sleeve 10 is pushed forward, the engaging pawls 11 push the front side of the elastic gripper 7 to retract inward, and the engaging pawls 11 and engaging ratchet teeth 12 engage with each other to form a one-way locking structure. This design can effectively prevent the locking sleeve 10 from retracting under conditions such as vibration, accidental contact, or air pressure fluctuations, ensuring that the elastic gripper 7 always maintains reliable clamping of the limiting ring seat 9.

[0027] In this embodiment, preferably, the front side of the outer sleeve 6 has multiple through holes, and the rear sides of multiple elastic grippers 7 are respectively fixedly connected to the rear sidewalls of the through holes. The outer wall of the outer sleeve 6 has a guide slope 15 on the side corresponding to the through holes. The front end of the guide slope 15 is flush with the inner side of the locking pawl 11, and the rear end of the guide slope 15 is inclined upward and flush with the upper rear side of the elastic gripper 7. The through holes provide deformation space for the elastic gripper 7, allowing it to freely close or open under the action of the locking slide 10. The guide slope 15 plays a key guiding role when the locking slide 10 is reset. When the locking sleeve 10 rotates, causing the engaging pawl 11 to misalign with the elastic gripper 7, the front end of the elastic gripper 7 opens outward, separating the clamping protrusion 8 from the limiting ring seat 9. At the same time, when the locking sleeve 10 can move backward, the inner side of the engaging pawl 11 will slide upward along the guide slope 15 and return to the upper rear end of the elastic gripper 7, so that it can accurately and smoothly engage with the engaging ratchet 12 again during the next locking operation, avoiding the problem that the engaging pawl 11 cannot lock properly due to misalignment.

[0028] In this embodiment, preferably, a piston sealing seat 4 is inserted and fixed to the rear end of the male connector 3, and the rear end of the piston sealing seat 4 is sleeved on the front end of the female connector 2. An annular sealing ring 5 is fixedly connected to the outer wall of the piston sealing seat 4 corresponding to the contact surfaces of the female connector 2 and the male connector 3. The inner and outer walls of the piston sealing seat 4 are respectively inserted and fitted with the inner wall of the female connector 2 and the outer sleeve 6. The annular sealing ring 5 further enhances the sealing performance of the connection, which can effectively prevent compressed air from leaking from the gap between the female connector 2 and the piston sealing seat 4, and between the male connector 3 and the piston sealing seat 4 during transmission, ensuring the stable working pressure of the pneumatic system and improving the working efficiency and energy utilization of the system.

[0029] In this embodiment, preferably, the pneumatic preliminary locking mechanism includes a pneumatic connecting seat 16. An exhaust check valve 17 and a vent valve 18 are respectively provided above and below the pneumatic connecting seat 16. Both the exhaust check valve 17 and the vent valve 18 communicate with the front area of ​​the outer sleeve 6, and the outer wall of the outer sleeve 6 has a communication hole corresponding to the exhaust check valve 17 and the vent valve 18. When the male connector 3 is inserted into the outer sleeve 6, the piston sealing seat 4 pushes the air in the front area of ​​the female connector 2 and the outer sleeve 6 to be discharged unidirectionally through the exhaust check valve 17, allowing the piston sealing seat 4 to be smoothly inserted into place. After the piston sealing seat 4 is fully inserted, a relatively closed space is formed between the pneumatic connecting seat 16 and the piston sealing seat 4, forming a preliminary pneumatic lock. This generates a certain pre-tightening force on the male connector 3, preventing it from accidentally dislodging before the sliding locking mechanism is fully engaged. To facilitate subsequent one-handed locking operations, when unlocking is required, open the vent valve 18 to release the compressed air in the enclosed area, thereby releasing the initial air pressure lock and allowing the male connector 3 to be easily pulled out.

[0030] In this embodiment, preferably, a fixing retaining ring 14 is fixedly connected to the front outer wall of the outer sleeve 6, and a reset spring 13 is sleeved on the outer wall of the outer sleeve 6. The two sides of the reset spring 13 are fixedly connected to the locking slide sleeve 10 and the fixing retaining ring 14, respectively. When the locking slide sleeve 10 slides forward to complete the locking action, the reset spring 13 is compressed and stores elastic potential energy. When unlocking is required, after the engagement between the locking pawl 11 and the locking ratchet 12 is released, the reset spring 13 releases its elastic potential energy, pushing the locking slide sleeve 10 to automatically slide backward to reset to the initial position without manual pull-back, further simplifying the operation steps and improving the smoothness and convenience of one-handed operation. The fixing retaining ring 14 provides stable support and positioning for the reset spring 13, ensuring that it can stably perform its reset function.

[0031] In this embodiment, preferably, a positioning bolt 20 is threadedly connected to the side wall of the locking sleeve 10 near the rear side, and the inner side of the connecting screw hole of the positioning bolt 20 penetrates the locking sleeve 10. The positioning bolt 20 can be tightened after the locking sleeve 10 is locked, and its end is engaged in the through hole on the outer sleeve 6, thereby mechanically fixing the position of the locking sleeve 10 and preventing the locking sleeve 10 from sliding unexpectedly under vibration, accidental contact, etc., which would lead to locking failure, further enhancing the stability and safety of the joint connection. A semi-circular groove can be correspondingly opened at the center of the side wall of the through hole of the outer sleeve 6 to facilitate the positioning and fixing of the positioning bolt 20.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A convenient pneumatic connector for easy one-handed operation, comprising a fixed female base (1), characterized in that: The front center of the fixed female seat (1) is fixedly connected to a female seat connector (2) and an outer sleeve (6). The outer sleeve (6) is concentrically arranged on the outside of the female seat connector (2), and a pneumatic initial locking mechanism is provided between the female seat connector (2) and the outer sleeve (6). A connecting male connector (3) is inserted and fixed on the front side of the outer sleeve (6), and the front end of the connecting male connector (3) is connected and fixed to an external pipe. A limiting ring seat (9) is provided on the rear end of the outer wall of the connecting male connector (3), and a sliding locking mechanism is fixedly installed on the front side of the side wall of the outer sleeve (6) corresponding to the limiting ring seat (9). The sliding locking mechanism includes an elastic claw (7), a clamping protrusion (8) is fixed on the front end of the inner wall of the elastic claw (7), and a locking slide (10) is movably sleeved on the front end of the outer sleeve (6). The locking slide (10) pushes the elastic claw (7) to close, so that the clamping protrusion (8) abuts against the front end of the limiting ring seat (9).

2. The convenient pneumatic connector for easy one-handed operation according to claim 1, characterized in that: The outer wall of the elastic gripper (7) is provided with multiple locking ratchet teeth (12) at equal intervals in the front half section, and the inner wall of the locking sleeve (10) is fixedly connected with locking ratchet teeth (11) at the positions of multiple elastic grippers (7), and the locking ratchet teeth (11) are matched with the locking ratchet teeth (12).

3. A convenient pneumatic connector for easy one-handed operation according to claim 2, characterized in that: The outer sleeve (6) has multiple through holes on the front side of its sidewall, and the rear sides of multiple elastic claws (7) are fixedly connected to the rear sidewall of the through holes respectively. The outer wall of the outer sleeve (6) has a guide slope (15) on the side corresponding to the through hole. The front end of the guide slope (15) is flush with the inner side of the snap-fit ​​claw (11), and the rear end of the guide slope (15) is inclined upward and flush with the upper rear side of the elastic claw (7).

4. A convenient pneumatic connector for easy one-handed operation according to claim 3, characterized in that: The rear end of the guide slope (15) is provided with a guide angle (19).

5. A convenient pneumatic connector for easy one-handed operation according to claim 1, characterized in that: The rear end of the male connector (3) is fixedly connected to a piston sealing seat (4), and the rear end of the piston sealing seat (4) is sleeved on the front end of the female connector (2). The outer wall of the piston sealing seat (4) is fixedly connected with an annular sealing ring (5) on the contact surface of the female connector (2) and the male connector (3).

6. A convenient pneumatic connector for easy one-handed operation according to claim 1, characterized in that: The air pressure preliminary locking mechanism includes an air pressure connecting seat (16), and an exhaust one-way valve (17) and an air release valve (18) are respectively provided on the upper and lower sides of the air pressure connecting seat (16). The exhaust one-way valve (17) and the air release valve (18) are both connected to the front area of ​​the outer sleeve (6), and the outer wall of the outer sleeve (6) has a connecting hole corresponding to the exhaust one-way valve (17) and the air release valve (18).

7. A convenient pneumatic connector for easy one-handed operation according to claim 1, characterized in that: The outer wall of the outer sleeve (6) is fixedly connected to a retaining ring (14), and a reset spring (13) is sleeved on the outer wall of the outer sleeve (6). The two sides of the reset spring (13) are fixedly connected to the locking sleeve (10) and the retaining ring (14) respectively.

8. A convenient pneumatic connector for easy one-handed operation according to claim 1, characterized in that: The locking sleeve (10) has a positioning bolt (20) threadedly connected to the side wall near the rear side, and the inner side of the connecting screw hole of the positioning bolt (20) passes through the locking sleeve (10).

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