Safety lock structure for 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 safety lock structure for a plug-in type quick connector. A safety lock structure for a plug-in type quick connector comprises a shell, a switch spring, a steel ball b and a switch pin, a switch is arranged on the shell, a movable groove a is transversely formed in the switch, the switch spring and the switch pin are arranged in the movable groove a, the switch spring is inserted into a clamping groove of the switch pin, a limiting ring a is arranged in the middle of the switch pin, a through hole a is formed in the lower portion of the switch pin, and the steel ball b is arranged in the through hole a. The steel ball b is in contact with the movable groove, and two ends of the movable groove are provided with grooves. The utility model has the beneficial effects that the steel ball b is generally arranged in the groove, and the switch can be rotated only by extruding the switch pin to enable the valve core to be communicated, so that a safety measure is taken before operation, misoperation is avoided, and the operation is very convenient.

Description

Technical Field

[0001] The utility model relates to a quick-disassembly connection device, in particular to a safety lock structure for a plug-in quick connector. Background Art

[0002] Quick connectors include hydraulic quick connectors and various fluid quick connectors. It is a connection device for quickly connecting or disconnecting pipelines to achieve quick disassembly and assembly. Since the quick connector has a two-way check valve function and there is no leakage when the pipeline is disconnected, it is widely used in the fields of petroleum, metallurgy, hydropower, construction machinery, ships, electromechanical equipment, etc. The connection structure of the quick connector is the most important part, and its connection method and structure directly determine the convenience, reliability and product quality of the quick connector. The quick connector consists of a female connector and a male connector. The existing structure inserts to open the flow channel, but in actual scenarios, when it is necessary to be able to independently open the flow channel, there are certain problems, which may affect the use effect of the quick connector, and there is a lack of a safety structure to avoid incorrect operations. Summary of the Invention

[0003] In order to solve the above technical problem of the lack of a safety structure, the utility model provides a safety lock structure for a plug-in quick connector.

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

[0005] The safety lock structure for a plug-in quick connector includes a housing, a switch spring, a steel ball b and a switch pin. A switch is provided on the housing, and an active groove a is horizontally provided on the switch. The switch spring and the switch pin are provided in the active groove a. The switch spring is inserted into the card slot of the switch pin. A limit ring a is provided in the middle of the switch pin, and a through hole a is provided below the switch pin. The steel ball b is provided in the through hole a, and the steel ball b contacts the active groove. Grooves are provided at both ends of the active groove.

[0006] The switch pin is riveted in the active groove a.

[0007] A limit block is provided on the side wall of the housing, and the limit block contacts the switch.

[0008] Using the technical solution of the utility model, the structure is novel, the design is ingenious and simple. Usually, the steel ball b is in the groove. Only by squeezing the switch pin can the switch be rotated to connect the valve core, so there is a safety measure before operation and incorrect operation will not occur, and the operation is very convenient. Brief Description of the Drawings

[0009] Figure 1 is a schematic structural view of the utility model;

[0010] Figure 2 、 5 is a schematic structural view of the unit female connector;

[0011] Figure 3 It is a structural schematic diagram of a misoperation structure;

[0012] Figure 4 It is a structural schematic diagram of a runner opening;

[0013] Figure 6 、 7 、8 are structural schematic diagrams of the housing of the present utility model. Specific embodiments

[0014] The present utility model will be further described below with reference to the accompanying drawings and embodiments. Embodiment

[0015] As Figure 1 、 6 、7, and 8 show a safety lock structure for a plug-in quick connector, including a housing 1, a switch spring 12, a steel ball b 23, and a switch pin 4. A switch 3 is provided on the housing 1. An activity groove a is provided horizontally on the switch 3. The switch spring 12 and the switch pin 4 are provided in the activity groove a. The switch spring 12 is inserted into a card slot of the switch pin 4. A limiting ring a is provided in the middle of the switch pin 4. A through hole a is provided below the switch pin 4. The steel ball b 23 is provided in the through hole a. The steel ball b 23 contacts the activity groove. Grooves are provided at both ends of the activity groove.

[0016] The switch pin 4 is riveted in the activity groove a.

[0017] A limiting block is provided on the side wall of the housing 1, and the limiting block contacts the switch 3.

[0018] In use, the plug-in quick connector includes a unit female connector. The number of the unit female connectors is two. The unit female connector includes a housing 1 and a connector body 2. The front outer wall of the connector body 2 is sleeved with the housing 1. The side wall of the housing 1 is provided with an installation opening. A switch 3 is arranged in the installation opening. The lower part of the switch 3 is inserted into the installation opening and is clamped with a valve core 6. A fixing bolt 7 is inserted into the switch 3 and the valve core 6 for fixation. A safety lock structure and a misoperation structure are arranged on the switch 3 and the housing 1. A buckle is arranged on the front end surface of the housing 1. A recessed groove a and a recessed groove b are arranged on the front outer wall of the connector body 2. A connector body O-ring a is arranged in the recessed groove a, and a connector body O-ring b19 is arranged in the recessed groove b. A connecting steel pin 8 is arranged between the housing 1 and the connector body 2. A recessed groove c is arranged on the lower outer wall of the switch 3. A switch O-ring 20 is arranged in the recessed groove c. The switch O-ring 20 is in contact with the installation opening. A valve core upper gasket 17 is arranged on the outer wall at the connection of the switch 3 and the valve core 6. A valve core sealing ring 14 is arranged between the outer wall of the valve core 6 and the inner wall of the housing 1. A positioning pin 5 is arranged at the center of the bottom end of the valve core 6. The positioning pin 5 is sleeved on a valve core lower gasket 18. The positioning pin 5 is inserted into the inner wall of the housing 1. The bottom of the positioning pin 5 is recessed in the middle, and a positioning pin spring 13 is arranged at the recessed part. The positioning pin spring 13 is arranged in a fixing groove. The rod body of the fixing bolt 7 is recessed in the upper part, and a fixing bolt O-ring 21 is arranged at the recessed part. The misoperation structure includes a moving pin 10, a locking pin spring 11, a steel ball a22 and a locking pin 9. A tooth body is arranged inside the switch 3. The tooth body is connected with the tooth part of the moving pin 10. The front part of the moving pin 10 is a positioning rod. A limiting ring b is arranged in the middle of the positioning rod. The limiting ring b is in contact with the steel ball a22. The steel ball a22 is arranged in a through hole b. The other side of the through hole b is the locking pin spring 11 and the locking pin 9. The locking pin spring 11 is arranged in a movable groove b. The locking pin spring 11 is in contact with the locking pin 9. A limiting ring c is arranged in the middle of the locking pin 9, and a limiting table body is arranged at the rear end of the locking pin 9. The middle of the valve core 6 is horizontally penetrated to leave a flow channel opening. A dust-proof ring 16 is arranged on the front outer wall of the housing 1, and a housing sealing ring 15 is arranged on the surface. The housing sealing ring 15 is located inside the buckle. An insertion groove 25 is arranged on one side of the buckle. A buckle seat is arranged on one side of the insertion groove 25. A ring body is arranged in the middle of the housing 1. The valve cores 6 on the left and right sides are independent. When the flow channel is in the closed state, the lower spherical outer wall of the valve core 6 blocks the flow channel and needs to be opened by rotating the switch 3. Rotating the switch 3 requires the operation of the safety lock structure, which is equivalent to having a safety guarantee. Moreover, the flow channel can be independently opened to meet the needs of more scenarios.

[0019] It should be understood that the above are only the preferred embodiments of the present invention and are not sufficient to limit the technical solutions of the present invention. For those of ordinary skill in the art, within the spirit and principles of the present invention, additions, deletions, substitutions, transformations or improvements can be made according to the above description. All these technical solutions after the above additions, deletions, substitutions, transformations or improvements shall fall within the protection scope of the appended claims of the present invention.

Claims

1. Safety lock structure for plug-in quick connector, comprising a housing (1), a switch spring (12), a steel ball b (23) and a switch pin (4), characterized in that: A switch (3) is provided on the housing (1). A movable groove a is provided horizontally 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 card slot of the switch pin (4). A limiting 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. Grooves are provided at both ends of the movable groove.

2. The safety lock structure for the plug-in quick connector according to claim 1, characterized in that: The switch pin (4) is riveted in the movable groove a.

3. The safety lock structure for the plug-in quick connector according to claim 1, characterized in that: A limiting block is provided on the side wall of the housing (1). The limiting block contacts the switch (3).

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