CN218408975U

CN218408975U - Self-locking pneumatic connector

Info

Publication number: CN218408975U
Application number: CN202222677914.4U
Authority: CN
Inventors: 南永生; 南永松; 南永义; 南博
Original assignee: Zhejiang Yongrui Pneumatic Co ltd
Current assignee: Zhejiang Yongrui Pneumatic Co ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-01-31
Anticipated expiration: 2032-10-11

Abstract

The utility model discloses a self-locking pneumatic joint, which has the technical proposal that the self-locking pneumatic joint comprises a pipe body, a valve body is arranged in the pipe body, and a piston assembly is elastically arranged between the valve body and the pipe body; the piston assembly comprises a sealing element which is abutted against one surface of the valve body, the sealing element is elastically connected with an abutting piece which is matched with the air pipe, and a locking assembly is arranged between the abutting piece and the sealing element; a pipe sleeve is also arranged in the pipe body; the pipe sleeve is connected with the locking assembly; a pressure relief hole communicated with the outside is formed in the periphery of the valve body, and a pressure relief valve connected with the locking assembly is arranged in the pressure relief hole; the locking assembly can ensure that the gas pipe is released from a fixed state and the gas source is disconnected in the process of pulling out the plug, so that the increase of the pressure in the pipe body caused by the gas in the pipeline flowing into the pipe body is avoided; meanwhile, the pressure relief valve can perform the pressure relief function on the gas in the tube body, so that the impact on the hand of a user caused by the outward spraying of the gas from the gap between the gas tube and the tube body is avoided.

Description

Self-locking pneumatic connector

Technical Field

The utility model relates to a jointing equipment technical field, concretely relates to from locking-type pneumatic joint.

Background

The pneumatic quick connector is a quick connector mainly used for air piping and pneumatic tools, and can realize pipeline connection or disconnection without tools. The patent No. (CN 217382106U) discloses a joint with a self-locking function, wherein a valve seat and a piston are arranged to realize automatic cut-off of an air source while a pipeline is plugged; however, the above patents have the following problems: in the process of extracting the trachea, because the trachea offsets with the piston all the time, therefore the piston has outside effort to the trachea when operating personnel presses sleeve pipe 1 and removes to tracheal fixed time, the piston can outwards push away the trachea and remove sealedly until trachea and body, at this in-process, because the piston is not totally enclosed completely, consequently remaining gas of pipeline gets into between trachea and the body, cause the atmospheric pressure increase between trachea and the body, thereby can lead to the gas can follow the gas and spout from the gap department of trachea and joint, spray out the trachea even, produce the impact to operating personnel's hand, cause the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a from locking-type pneumatic joint can still not be relieved the air supply when fixed at the trachea and cut off, carries out the pressure release to the internal gas of geminate transistors simultaneously, security when guaranteeing the staff and extract the trachea.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a self-locking pneumatic connector comprises a pipe body and is characterized in that a valve body is arranged in the pipe body, and a piston assembly is elastically arranged between the valve body and the pipe body; the piston assembly comprises a sealing element which is abutted against one surface of the valve body, the sealing element is elastically connected with an abutting piece matched with the air pipe, and a locking assembly is arranged between the abutting piece and the sealing element; a pipe sleeve is also arranged in the pipe body, and a self-locking piece is arranged between the pipe sleeve and the valve body; the pipe sleeve is connected with the locking assembly; the periphery of the valve body is provided with a pressure relief hole communicated with the outside, a pressure relief valve connected with the locking assembly is arranged in the pressure relief hole, and when the pipe sleeve is pressed into the pipe body, the sealing element and the abutting part are separated from each other, and the pressure relief valve is opened.

The utility model is further arranged that the locking component comprises a locking hole arranged on the periphery of the sealing element, a locking rod is elastically connected in the locking hole, and a clamping hole clamped with the locking rod is arranged on the periphery of the abutting element; one end of the locking rod, which is far away from the clamping hole, is also provided with a magnetic attraction piece; the magnetic pipe is characterized by further comprising a locking groove arranged on the periphery of the pipe body, a magnetic ring matched with the magnetic suction piece is connected in the locking groove in a sliding mode, a reset spring is arranged between the magnetic ring and the locking groove, and a push rod connected with the pipe sleeve is arranged on one side of the magnetic ring.

The utility model is further provided with that the pressure relief hole is communicated with the locking groove; the pressure relief valve is arranged at one end of the locking groove of the pressure relief hole; the pressure relief valve comprises a valve seat arranged in the pressure relief hole, the valve seat is elastically connected with a valve core which is abutted against the valve seat, and one end of the valve core is exposed in the locking groove; the push rod is provided with a press ring for controlling the valve core to be away from the valve seat, and the pipe body is further provided with a through hole communicated with the locking groove.

The utility model discloses still further set up to, one side that the locking pole is close to the card hole is provided with the conical surface towards valve body one side.

The utility model discloses still further set up to, still be provided with the sealing ring between self-locking piece and the valve body.

To sum up, the utility model has the advantages that:

compared with the prior art, when the air pipe is inserted, the abutting part and the sealing part are mutually clamped, so that the valve body can be synchronously kept away, and the air source communication between the pipe body and the pipeline is realized; when the air pipe needs to be pulled out, the sealing element and the abutting part can be separated from each other through the locking assembly when the pipe sleeve 5 is pushed, so that the air source can be disconnected when the air pipe is not unlocked, the phenomenon that air in the pipe flows into the pipe body to cause increase of air pressure in the pipe body is avoided, and the phenomenon that when the air pipe is unlocked, the air pipe is pushed away from the joint by the piston under the action of the spring to cause the residual air in the pipe to be discharged from a gap between the air pipe and the pipe body to cause impact on the hand of a user is avoided; meanwhile, the gas between the gas pipe and the valve body can be discharged and decompressed through the decompression valve, so that the use safety is further improved.

Drawings

Fig. 1 is a half sectional view of the present embodiment.

Fig. 2 is an enlarged view of the sealing member and the abutment member of fig. 1.

Fig. 3 is an enlarged view of the pressure relief vent of fig. 1.

Fig. 4 is a state diagram when the trachea is inserted in the present embodiment.

Reference numerals: 1-a pipe body; 2-a valve body; 3-a piston assembly; 31-a seal; 32-an abutment; 4-a locking assembly; 41-a locking hole; 42-a locking lever; 43-a snap hole; 44-magnetic attraction pieces; 45-a locking groove; 46-a magnetic ring; 47-a push rod; 5-pipe sleeve; 6-pressure relief holes; 7-a pressure relief valve; 71-valve seat; 72-a valve core; 8-pressing a ring; 9-a conical surface; 10-a sealing ring; 11-pressure ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-4, the embodiment discloses a self-locking pneumatic connector, which includes a pipe body 1, a valve body 2 is disposed in the pipe body 1, and a piston assembly 3 is elastically disposed between the valve body 2 and the pipe body 1; the piston assembly 3 comprises a sealing element 31 abutting against one surface of the valve body 2, the sealing element 31 is elastically connected with an abutting element 32 matched with an air pipe, and a locking assembly 4 is arranged between the abutting element 32 and the sealing element 31; a pipe sleeve 5 is also arranged in the pipe body 1, and a self-locking piece 8 is arranged between the pipe sleeve 5 and the valve body 2; the pipe sleeve 5 is connected with the locking component 4; the valve body 2 all sides are provided with the pressure release hole 6 with external intercommunication, be provided with the relief valve 7 of being connected with locking subassembly 4 in the pressure release hole 6, when pipe box 5 is pressed in to body 1, sealing member 31 and butt piece 32 alternate segregation and relief valve 7 open.

The locking assembly 4 comprises a locking hole 41 arranged on the peripheral side of the sealing member 31, a locking rod 42 is elastically connected in the locking hole 41, and a clamping hole 43 clamped with the locking rod 42 is arranged on the peripheral side of the abutting member 32; one end of the locking rod 42 far away from the clamping hole 43 is also provided with a magnetic suction piece 44; the magnetic pipe further comprises a locking groove 45 arranged on the peripheral side of the pipe body 1, a magnetic ring 46 matched with the magnetic suction piece 44 is connected in the locking groove 45 in a sliding mode, a return spring is arranged between the magnetic ring 46 and the locking groove 45, and a push rod 47 connected with the pipe sleeve 5 is arranged on one side of the magnetic ring;

when the air pipe is inserted into the joint, firstly, the air pipe passes through the self-locking piece 8, and the folded piece on the self-locking piece 8 can be clamped on the surface of the air pipe, so that the air pipe can move only in one direction towards the valve body 2, and the self-locking of the air pipe and the joint is realized; when the air pipe is inserted inwards, the end part of the air pipe abuts against the abutting part 32 to drive the abutting part 32 to move inwards, at the moment, the abutting part 32 and the sealing part 31 are locked with each other through the locking rod 42, so that the abutting part 32 and the sealing part 31 synchronously move inwards to realize the connection of the pipeline, meanwhile, the sealing ring 10 is arranged in the pipe body 1, and the sealing ring 10 is attached to the outer surface of the air pipe, so that the sealing is realized;

when the air pipe needs to be pulled out, a user pushes the pipe body 1 of the pipe sleeve 5, in the pushing process, the magnetic ring 46 connected with the pipe sleeve 5 through the push rod 47 in the locking groove 45 can overcome the spring to slide inwards under the action of the pipe sleeve 5, the magnetic ring 46 can absorb the magnetic attraction piece 44 on the locking rod 42 under the action of magnetic force in the inward sliding process, so that the locking rod 42 is separated from the clamping hole 43, at the moment, the sealing piece 31 is separated from the abutting piece 32, the spring elasticity between the abutting piece 32 and the sealing piece 31 is smaller than that between the sealing piece 31 and the pipe body 1, and because the air pipe is in a locking state at the moment, the abutting piece 32 cannot be reset, and the sealing piece 31 can abut against the valve body 2 under the action of the spring, so that the air source is cut off; then, the sleeve continues to be pushed inwards, at this time, as shown in fig. 3, the press ring 11 on the push rod 47 presses the valve core 72 downwards in the pushing process, and further opens the pressure relief hole 6, so that the gas in the tube body can be discharged to the outside through the pressure relief hole, the pressure relief in the tube body 1 is realized, the problem that the gas is exposed from a gap between the gas tube and the tube body to impact the hand of a user in the process of pulling out the gas tube by the user is avoided, and the safety of the user is ensured; when the pipe sleeve is pushed continuously, the plug-in on the pipe sleeve can prop against the self-locking piece 8, so that the self-locking piece 8 is expanded outwards, the fixing of the trachea is released, and the trachea can be smoothly pulled out outwards.

The pressure relief hole 6 is communicated with the locking groove 45; the pressure release valve 7 is arranged at one end of the pressure release hole 6, which is positioned at the locking groove 45; the pressure relief valve 7 comprises a valve seat 71 arranged in the pressure relief hole 6, the valve seat 71 is elastically connected with a valve core 72 abutting against the valve seat 71, and one end of the valve core 72 is exposed in the locking groove 45; the push rod 47 is provided with a press ring 11 for controlling the valve core 72 to be away from the valve seat 71, and the pipe body 1 is also provided with a through hole communicated with the locking groove 45.

As shown in fig. 2, the side of the lock lever 42 close to the catch hole 43 is provided with a tapered surface 9 facing the valve body 2.

In this embodiment, a sealing ring 10 is further disposed between the self-locking element 8 and the valve body 2.

Meanwhile, as shown in fig. 1, a baffle is arranged outside the through hole of the pipe body 1, and exhausted gas at the through hole can be guided through the baffle, so that when a user holds the joint, the decompressed gas cannot impact the user.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, any modifications, equivalent replacements, improvements, etc. made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-locking pneumatic connector comprises a pipe body (1), and is characterized in that a valve body (2) is arranged in the pipe body (1), and a piston assembly (3) is elastically arranged between the valve body (2) and the pipe body (1); the piston assembly (3) comprises a sealing element (31) which is abutted against one surface of the valve body (2), the sealing element (31) is elastically connected with an abutting piece (32) which is matched with an air pipe, and a locking assembly (4) is arranged between the abutting piece (32) and the sealing element (31); a pipe sleeve (5) is also arranged in the pipe body (1), and a self-locking piece (8) is arranged between the pipe sleeve (5) and the valve body (2); the pipe sleeve (5) is connected with the locking assembly (4); the valve body (2) week side is provided with pressure release hole (6) with external intercommunication, be provided with in pressure release hole (6) and be connected with locking subassembly (4) relief valve (7), when pipe box (5) are pressed in to body (1), sealing member (31) and butt piece (32) alternate segregation and relief valve (7) are opened.

2. The self-locking pneumatic connector as claimed in claim 1, wherein the locking assembly (4) comprises a locking hole (41) formed on the periphery of the sealing member (31), a locking rod (42) is elastically connected in the locking hole (41), and a clamping hole (43) clamped with the locking rod (42) is formed on the periphery of the abutting member (32); one end of the locking rod (42) far away from the clamping hole (43) is also provided with a magnetic piece (44); the magnetic pipe is characterized by further comprising a locking groove (45) arranged on the periphery of the pipe body (1), a magnetic ring (46) matched with the magnetic piece (44) is connected in the locking groove (45) in a sliding mode, a reset spring is arranged between the magnetic ring (46) and the locking groove (45), and a push rod (47) connected with the pipe sleeve (5) is arranged on one side of the magnetic ring (46) and the locking groove (45).

3. Self-locking pneumatic joint according to claim 2, wherein said pressure relief hole (6) communicates with a locking groove (45); the pressure release valve (7) is arranged at one end, located at the locking groove (45), of the pressure release hole (6); the pressure relief valve (7) comprises a valve seat (71) arranged in the pressure relief hole (6), the valve seat (71) is elastically connected with a valve core (72) abutted against the valve seat (71), and one end of the valve core (72) is exposed in the locking groove (45); the push rod (47) is provided with a press ring (11) for controlling the valve core (72) to be far away from the valve seat (71), and the pipe body (1) is further provided with a through hole communicated with the locking groove (45).

4. Self-locking pneumatic connector according to claim 2, characterised in that the locking lever (42) is provided with a conical surface (9) on the side facing the valve body (2) on the side facing the latching opening (43).

5. Self-locking pneumatic joint according to claim 1, characterised in that a sealing ring (10) is further arranged between the self-locking member (8) and the valve body (2).