Plug-in type quick connector

Abstract

The utility model relates to a connecting device capable of being quickly disassembled and assembled, in particular to a plug-in type quick connector. The plug-in type quick connector comprises two unit female connectors, each unit female connector comprises a shell and a connector body, the outer wall of the front portion of each connector body is sleeved with the corresponding shell, the side wall of each shell is provided with an installation opening, a switch is arranged in each installation opening, the lower portion of each switch is inserted into the corresponding installation opening to be connected with a valve element in a clamped mode, and a fixing bolt is inserted into the corresponding switch and the valve element to be fixed. A safety lock structure and a connection unlocking structure are arranged on the switch and the shell, and a buckle is arranged on the surface of the front end of the shell. A concave groove a and a concave groove b are formed in the outer wall of the front portion of the connector body, a connector body O-shaped ring a is arranged in the concave groove a, a connector body O-shaped ring b is arranged in the concave groove b, and a connecting steel pin is arranged between the shell and the connector body. The utility model has the beneficial effects that the two unit female joints are mutually buckled and locked, the locking pin is jacked into the shell, then the switch can be independently operated, and the flow channel can be independently opened at one side.

Description

Technical Field

[0001] The utility model relates to a quick-disassembly and assembly connection device, in particular to a plug-in type quick connector. Background Art

[0002] Quick connectors include hydraulic quick connectors and various fluid quick connectors. It is a connection device that quickly connects or disconnects the pipeline and realizes rapid disassembly and assembly. Since the quick connector has a two-way non-return function and the pipeline is disconnected without leakage, it is widely used in the fields of petroleum, metallurgy, hydropower, engineering machinery, ships, electromechanical equipment, etc. The quick connector connection structure is the most important part of the quick connector. Its connection method and structure directly determine the ease of use, reliability and product quality of the quick connector. The quick connector consists of two parts: the female connector and the male connector. The existing valve core is pushed up, and the flow channel is opened when the connection is completed. The flow channel cannot be independently controlled on one side, and in special scenarios, it may affect the use effect of the quick connector. Summary of the Invention

[0003] In order to solve the above-mentioned technical problem of being unable to independently control a unilateral flow channel, the utility model provides a plug-in quick connector.

[0004] The technical solution of the utility model is as follows:

[0005] A plug-in quick connector includes two female connectors, each comprising a housing and a connector body. The housing is sheathed on the front outer wall of the connector body. A mounting opening is provided on the side wall of the housing, in which a switch is located. The lower portion of the switch is inserted into the mounting opening to engage with the valve core. A fixing bolt is inserted into the switch and valve core to secure the connection. The switch and housing are provided with a safety lock and a connection unlocking mechanism. A snap is provided on the front surface of the housing. The front outer wall of the connector body is provided with a recessed groove a and a recessed groove b. A connector body O-ring a is located in recessed groove a, and a connector body O-ring b is located in recessed groove b. A connecting steel pin is provided between the housing and the connector body.

[0006] The outer wall of the lower part of the switch is provided with a recessed groove c, in which a switch O-ring is provided, and the switch O-ring contacts the mounting port. A valve core upper pad is provided on the outer wall of the connection between the switch and the valve core, and a valve core sealing ring is provided between the outer wall of the valve core and the inner wall of the shell. A locating pin is provided at the center of the bottom end of the valve core, and the locating pin sleeve is provided on the valve core lower pad. The locating pin is inserted into the inner wall of the shell, and the middle of the bottom of the locating pin is recessed, and a locating pin spring is provided at the recessed position. The locating pin spring is provided in the fixing groove, and the upper part of the fixing bolt rod is recessed, and a fixing bolt O-ring is provided at the recessed position.

[0007] The safety lock structure includes a switch spring, a steel ball b and a switch pin. A movable groove a is horizontally provided on the switch, and a switch spring and a switch pin are provided in the movable groove a. The switch spring is inserted into the slot of the switch pin. A limit ring a is provided in the middle of the switch pin. A through hole a is provided below the switch pin, and a steel ball b is provided in the through hole a. The steel ball b contacts the movable groove c, and grooves are provided at both ends of the movable groove c.

[0008] The connection and unlocking structure includes a movable pin, a locking pin spring, a steel ball a and a locking pin. A tooth body is provided on the inner side of the switch, and the tooth body is connected to the tooth part of the movable pin. The front part of the movable pin is a positioning rod, and a limiting ring b is provided in the middle of the positioning rod. The limiting ring b contacts the steel ball a. The steel ball a is provided in the through hole b. On the other side of the through hole b are the locking pin spring and the locking pin. The locking pin spring is provided in the movable groove b. The locking pin spring contacts the locking pin. A limiting ring c is provided in the middle of the locking pin, and a limiting platform is provided at the rear end of the locking pin.

[0009] The middle of the valve core is horizontally connected, leaving a flow channel opening.

[0010] The outer wall of the front part of the shell is provided with a dustproof ring, and the surface is provided with a shell sealing ring. The shell sealing ring is located on the inner side of the buckle. An insertion groove is provided on one side of the buckle, and a buckle seat is provided on one side of the insertion groove. A ring body is provided in the middle of the shell.

[0011] The side wall of the shell is provided with a ring seat, which is connected to the switch mounting seat. The switch mounting seat is provided with a mounting opening, a movable groove c is provided outside the mounting opening, the movable groove c is arc-shaped, and an arc-shaped notch is provided inside the mounting opening.

[0012] The technical solution of the present invention has a novel structure, a clever and simple design, the two unit female connectors are locked with each other, the locking pin is pushed into the shell, and then the switch can be operated separately, the flow channel can be opened independently on one side, and the safety lock structure will not cause misoperation, the operation is very convenient, and the effect is very good in resisting the impact of high-speed fluid and decompression pulse pressure, thereby improving the performance parameters of the quick connector; it is simple to process, the connection is convenient and quick, the strength is high, and the resistance to shorting is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 、 3 This is a structural diagram of the unit female connector of the utility model;

[0015] Figure 4 It is a structural diagram of the safety lock structure of the utility model;

[0016] Figure 5 It is a structural diagram of the connection and unlocking structure of the utility model;

[0017] Figure 6It is a structural diagram of the initial docking state;

[0018] Figure 7 It is a structural diagram of the docking interlocking state;

[0019] Figure 8 、 9 , 10, and 11 are schematic structural diagrams of the housing of the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0021] like Figure 1 、 2 , 3, 4, 5, 6, 7, 8, 9, 10, and 11 show a plug-in quick connector, comprising a unit female connector. The number of the unit female connectors is two, and the unit female connector comprises a shell 1 and a connector body 2. The front outer wall of the connector body 2 is sleeved with the shell 1, and the side wall of the shell 1 is provided with a mounting port, in which a switch 3 is provided. The lower part of the switch 3 is inserted into the mounting port and clamped with the valve core 6. The fixing bolt 7 is inserted into the switch 3 and the valve core 6 to fix them. A safety lock structure and a misoperation structure are provided on the switch 3 and the shell 1, and a buckle is provided on the front end surface of the shell 1.

[0022] The front outer wall of the joint body 2 is provided with a recessed groove a and a recessed groove b, a joint body O-ring a is provided in the recessed groove a, a joint body O-ring b19 is provided in the recessed groove b, and a connecting steel pin 8 is provided between the shell 1 and the joint body 2.

[0023] The lower outer wall of the switch 3 is provided with a recessed groove c, in which a switch O-ring 20 is provided. The switch O-ring 20 contacts the mounting port. The outer wall of the connection between the switch 3 and the valve core 6 is provided with a valve core upper pad 17. A valve core sealing ring 14 is provided between the outer wall of the valve core 6 and the inner wall of the housing 1. A locating pin 5 is provided at the center of the bottom end of the valve core 6. The locating pin 5 is sleeved on the valve core lower pad 18. The locating pin 5 is inserted into the inner wall of the housing 1. The middle of the bottom of the locating pin 5 is recessed, and a locating pin spring 13 is provided at the recess. The locating pin spring 13 is provided in the fixing groove. The upper part of the rod body of the fixing bolt 7 is recessed, and a fixing bolt O-ring 21 is provided at the recess.

[0024] The safety lock structure includes a switch spring 12, a steel ball b23 and a switch pin 4. A movable groove a is horizontally provided on the switch 3, and the switch spring 12 and the switch pin 4 are provided in the movable groove a. The switch spring 12 is inserted into the card slot of the switch pin 4. A limit ring a is provided in the middle of the switch pin 4. A through hole a is provided below the switch pin 4, and a steel ball b23 is provided in the through hole a. The steel ball b23 contacts the movable groove c24, and grooves are provided at both ends of the movable groove c24.

[0025] The connection and unlocking structure includes a movable pin 10, a locking pin spring 11, a steel ball a22 and a locking pin 9. A tooth body is provided on the inner side of the switch 3, and the tooth body is connected to the tooth part of the movable pin 10. The front part of the movable pin 10 is a positioning rod, and a limiting ring b is provided in the middle of the positioning rod. The limiting ring b is in contact with the steel ball a22. The steel ball a22 is provided in the through hole b. On the other side of the through hole b are the locking pin spring 11 and the locking pin 9. The locking pin spring 11 is provided in the movable groove b. The locking pin spring 11 is in contact with the locking pin 9. A limiting ring c is provided in the middle of the locking pin 9, and a limiting platform is provided at the rear end of the locking pin 9.

[0026] The middle of the valve core 6 is horizontally penetrated, leaving a flow channel opening.

[0027] The outer wall of the front of the shell 1 is provided with a dust ring 16, and the surface is provided with a shell sealing ring 15. The shell sealing ring 15 is located on the inner side of the buckle. An insertion groove 25 is provided on one side of the buckle, and a buckle seat is provided on one side of the insertion groove 25. A ring body is provided in the middle of the shell 1.

[0028] The side wall of the housing 1 is provided with a ring seat, which is connected to the switch mounting seat. The switch mounting seat is provided with a mounting opening, a movable groove c is provided outside the mounting opening, the movable groove c is arc-shaped, and an arc-shaped notch is provided inside the mounting opening.

[0029] When in use, a quick connector is often used. After the male connector and the female connector are connected, the flow channel is opened and the flow channel cannot be adjusted or changed. After the two unit female connector housings 1 of this structure are connected to each other, the locking pin 9 is pushed in, and the tooth body of the switch 3 can move as the switch 3 rotates. Usually, the steel ball b23 is in the groove. Only by squeezing the switch pin 4 can the switch 3 be rotated, thereby driving the valve core 6 to rotate, so that the spherical outer wall of the valve core, which blocks the flow channel, is rotated to the same side as the flow channel. The original spherical outer wall blocking the opening of the housing 1 is also connected, and the flow channel is opened. During operation, it is necessary to press the switch pin 4 tightly so that the steel ball b23 can move on the movable groove c24. The flow channels on both sides can be opened or closed to meet various needs.

[0030] It should be understood that the above description is only a preferred embodiment of the present invention and is not sufficient to limit the technical solutions of the present invention. For ordinary technicians in this field, within the spirit and principles of the present invention, additions, substitutions, changes or improvements can be made according to the above description, and all these additions, substitutions, changes or improvements should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A plug-in quick connector, including a female unit connector, characterized in that: The number of the unit female connectors is two, and the unit female connector comprises a shell (1) and a connector body (2). The front outer wall of the connector body (2) is provided with the shell (1), the side wall of the shell (1) is provided with a mounting opening, a switch (3) is provided in the mounting opening, the lower part of the switch (3) is inserted into the mounting opening and is clamped with the valve core (6), a fixing bolt (7) is inserted into the switch (3) and the valve core (6) for fixing, a safety lock structure and a connection unlocking structure are provided on the switch (3) and the shell (1), and a buckle is provided on the front surface of the shell (1).

2. The plug-in quick connector according to claim 1, characterized in that: The front outer wall of the joint body (2) is provided with a recessed groove a and a recessed groove b, a joint body O-ring a is provided in the recessed groove a, and a joint body O-ring b (19) is provided in the recessed groove b, and a connecting steel pin (8) is provided between the shell (1) and the joint body (2).

3. The plug-in quick connector according to claim 1, characterized in that: The lower outer wall of the switch (3) is provided with a recessed groove c, in which a switch O-ring (20) is provided. The switch O-ring (20) contacts the mounting port. A valve core upper pad (17) is provided on the outer wall of the connection between the switch (3) and the valve core (6). A valve core sealing ring (14) is provided between the outer wall of the valve core (6) and the inner wall of the housing (1). A positioning pin (5) is provided at the center of the bottom end of the valve core (6). The positioning pin (5) is sleeved on the valve core lower pad (18). The positioning pin (5) is inserted into the inner wall of the housing (1). The middle of the bottom of the positioning pin (5) is recessed, and a positioning pin spring (13) is provided at the recessed portion. The positioning pin spring (13) is provided in the fixing groove. The upper portion of the rod body of the fixing bolt (7) is recessed, and a fixing bolt O-ring (21) is provided at the recessed portion.

4. The plug-in quick connector according to claim 1, characterized in that: The safety lock structure comprises a switch spring (12), a steel ball b (23) and a switch pin (4); a movable groove a is transversely provided on the switch (3); a switch spring (12) and a switch pin (4) are provided in the movable groove a; the switch spring (12) is inserted into the slot of the switch pin (4); a limit ring a is provided in the middle of the switch pin (4); a through hole a is provided below the switch pin (4); a steel ball b (23) is provided in the through hole a; the steel ball b (23) contacts the movable groove c (24); and grooves are provided at both ends of the movable groove c (24).

5. The plug-in quick connector according to claim 1, characterized in that: The connection and unlocking structure comprises a movable pin (10), a locking pin spring (11), a steel ball a (22) and a locking pin (9); a tooth body is provided on the inner side of the switch (3); the tooth body is connected to the tooth portion of the movable pin (10); a positioning rod is provided at the front of the movable pin (10); a limiting ring b is provided in the middle of the positioning rod; the limiting ring b contacts the steel ball a (22); the steel ball a (22) is provided in the through hole b; the locking pin spring (11) and the locking pin (9) are provided on the other side of the through hole b; the locking pin spring (11) is provided in the movable groove b; the locking pin spring (11) contacts the locking pin (9); a limiting ring c is provided in the middle of the locking pin (9); and a limiting platform is provided at the rear end of the locking pin (9).

6. The plug-in quick connector according to claim 1, characterized in that: The middle of the valve core (6) is horizontally connected, leaving a flow channel opening.

7. The plug-in quick connector according to claim 1, characterized in that: The outer wall of the front portion of the housing (1) is provided with a dustproof ring (16), and the surface is provided with a housing sealing ring (15). The housing sealing ring (15) is located inside the buckle. An insertion groove (25) is provided on one side of the buckle. A buckle seat is provided on one side of the insertion groove (25). A ring body is provided in the middle of the housing (1).

8. The plug-in quick connector according to claim 1, characterized in that: The side wall of the housing (1) is provided with a ring seat, which is connected to the switch mounting seat. The switch mounting seat is provided with a mounting opening, and a movable groove c (24) is provided on the outside of the mounting opening. The movable groove c (24) is in an arc shape, and an arc-shaped notch is provided on the inside of the mounting opening.

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