Double-side button quick connector capable of preventing overpressure unlocking

Abstract

A double-side button quick connector capable of preventing overpressure unlocking is used for locking a male connector and comprises a double-side button contained in a shell of a female connector, the double-side button comprises a pair of pressing parts, a pair of hook parts used for locking the male connector and arranged at a supporting part, and four elastic arms extending from the hook parts to the middles of the pressing parts. The male connector is provided with a locking matching part matched with the hook part, and a limiting part is arranged in the middle of the pressing part. When the button is pressed to enable the hook part to be separated from the locking matching part, the limiting part abuts against the male connector.

Description

Technical Field

[0001] The utility model relates to the field of fluids, and specifically to a bilateral button quick connector with overpressure unlocking prevention. Background Art

[0002] Please refer to Figure 1 , 2 such locking components and such pipe connectors for locking pipe connections are known, especially from the disclosures US6086119 and US5374088. Such a locking component (bilateral button) is designed to lock a second tubular component (male connector) in a first tubular component (female connector).

[0003] The bilateral button includes a pair of rectangular pressing plates (pressing parts) 15, a pair of parts (hook parts) 17 arranged at the support part for locking the male connector, four elastic cross bars (elastic arms) 14 extending from the hook part towards the middle of the pressing part, the support part is provided with an insertion surface 18 and a support surface 21 that gradually extend towards the insertion direction of the male connector from the support part to both sides. When the male connector is inserted, the elastic wall of the insertion surface 18 is deformed by extrusion until the hook part locks the locking mating part of the male connector. When the male connector is pulled out, the support surface abuts against the female connector housing. The locking mating part of the SAE standard is a convex ring structure. Maintenance personnel use a fuel pipe wrench to squeeze the pressing part to disengage the hook part from the male connector. Taking the SAE standard size 7.89 connector as an example, the button pressing part can actually be unlocked by pressing a stroke of about 0.6 mm, but the wrench can be pressed in by about 2.5 mm - 3 mm. Maintenance is usually carried out when the vehicle has been running for several years, and the bilateral button is somewhat aged. The elastic arms are deformed too much and are prone to fatigue and even fracture.

[0004] This bilateral button has been around for more than 20 years. There are many types of female connector housings, and the cost of modifying the mold is relatively high. Inexperienced maintenance personnel often cause the button to be deformed too much, fatigued, and even fractured, which brings trouble to the vehicle owner. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a bilateral button quick connector with overpressure unlocking prevention, which can prevent the elastic arms from being deformed too much and does not require modifying the structure of the female connector housing.

[0006] To achieve the above purpose, the utility model provides a bilateral button quick connector with overpressure unlocking prevention for locking a male connector, including a bilateral button accommodated in the housing of a female connector. The bilateral button includes a pair of pressing parts, a pair of hook parts arranged at the support part for locking the male connector, and four elastic arms extending from the hook part towards the middle of the pressing part. The male connector is provided with a locking mating part that cooperates with the hook part. The characteristic is that a limiting part is arranged in the middle of the pressing part; when the button is pressed to disengage the hook part from the locking mating part, the limiting part abuts against the male connector.

[0007] In one embodiment, the locking engagement portion is an annular recess.

[0008] In one embodiment, the cross-section of the limiting portion is rectangular.

[0009] In one embodiment, the supporting portion is provided with an insertion surface and a supporting surface that gradually extend toward the insertion direction of the male joint from both sides of the supporting portion.

[0010] In one embodiment, the left edge of the pressing portion of the limiting portion extends to the right side of the hook portion.

[0011] In one embodiment, the housing includes a handle and a front shell that are connected and fixed. The handle is provided with a buckle, and the front shell is provided with a card hole that cooperates with the buckle.

[0012] In one embodiment, the locking engagement portion is an annular protrusion.

[0013] In one embodiment, the limiting portion abuts against the locking engagement portion.

[0014] In one embodiment, the double-sided button is further provided with a limiting and holding portion for abutting against the insertion tube of the male joint to prevent the maintenance personnel from continuing to press the pressing portion after the male joint is slightly pulled out.

[0015] In one embodiment, the double-sided button is made of glass fiber modified nylon.

[0016] In the present utility model, it is possible to prevent the elastic arm from being deformed too much and there is no need to modify the structure of the female joint housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a structural diagram of an existing double-sided button.

[0018] Figure 2 FIG. is a cross-sectional view of an existing double-sided button.

[0019] Figure 3 FIG. is a schematic structural diagram of a double-sided button quick connector with overpressure unlocking according to the first embodiment of the present utility model.

[0020] Figure 4 FIG. is Figure 3 an exploded view of the double-sided button quick connector with overpressure unlocking.

[0021] Figure 5 FIG. is Figure 3 a cross-sectional view of the double-sided button quick connector with overpressure unlocking.

[0022] Figure 6 FIG. is a cross-sectional view of a double-sided button quick connector with overpressure unlocking according to the second embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figure 3-5 The double-sided button quick connector for overpressure unlocking in the first embodiment of the present invention is used to lock the male connector 100, and includes a double-sided button 2 accommodated in the shell of the female connector. The double-sided button 2 includes a pair of pressing parts 15, a pair of hook parts 17 arranged at the support part for locking the male connector 100, and four elastic arms 14 extending from the hook parts 17 towards the middle of the pressing parts 15. The male connector 100 is provided with a locking mating part 101 that cooperates with the hook parts 17, and a limiting part 151 is arranged in the middle of the pressing part 15; when the pressing button causes the hook parts 17 to disengage from the locking mating part 101, the limiting part 151 abuts against the male connector 100.

[0025] The locking mating part 101 is an annular recess.

[0026] The cross-section of the limiting part 151 is rectangular.

[0027] The support part is provided with an insertion surface 18 and a support surface 21 that gradually extend towards the insertion direction of the male connector 100 from the support part to both sides.

[0028] The limiting part 151 extends from the left edge of the pressing part 15 to the right side of the hook part 17.

[0029] The shell includes a handle 3 and a front shell 4 that are connected and fixed. The handle 3 is provided with a buckle 31, and the front shell 4 is provided with a card hole 41 that cooperates with the buckle 31. The double-sided button 2 is made of glass fiber modified nylon.

[0030] Please refer to Figure 6 The double-sided button quick connector for overpressure unlocking in the second embodiment of the present invention, the locking mating part 101 is an annular protrusion. The limiting part 151 abuts against the locking mating part 101. The double-sided button 2 is further provided with a limiting and holding part 152, and the limiting and holding part 152 is used to abut against the insertion tube 102 of the male connector 100. To prevent the maintenance personnel from continuing to press the pressing part 15 after the male connector 100 is slightly pulled out.

[0031] In the present invention, it is possible to prevent the elastic arms 14 from being deformed too much without modifying the structure of the female connector shell.

[0032] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A double-sided button quick connector for preventing overpressure unlocking and used for locking a male connector, which includes a double-sided button accommodated in the housing of a female connector. The double-sided button includes a pair of pressing parts, a pair of hook parts arranged at the support part for locking the male connector, and four elastic arms extending from the hook parts towards the middle of the pressing parts. The male connector is provided with a locking mating part that cooperates with the hook parts, and is characterized in that, A limiting portion is provided in the middle of the pressing portion; when the button is pressed to disengage the hook portion from the locking and mating portion, the limiting portion abuts against the male connector.

2. The double-sided button quick connector for preventing overpressure unlocking according to claim 1, characterized in that, The locking and mating portion is an annular recess.

3. The double-sided button quick connector for preventing overvoltage unlocking according to claim 1, characterized in that, The locking and mating portion is an annular protrusion.

4. The quick connector with bilateral buttons for overpressure unlocking according to claim 2, characterized in that, The cross-section of the limiting portion is rectangular.

5. The quick connector with bilateral buttons for overpressure unlocking according to claim 2 or 3, characterized in that The supporting portion is provided with an insertion surface and a supporting surface that gradually extend from the supporting portion toward both sides in the insertion direction of the male connector.

6. The double-sided button quick connector for preventing overpressure unlocking according to claim 4, characterized in that, The limiting portion extends from the left edge of the pressing portion to the right side of the hook portion.

7. The quick coupling with bilateral buttons for preventing overpressure unlocking according to claim 6, wherein, The housing includes a handle and a front shell that are connected and fixed. The handle is provided with a buckle, and the front shell is provided with a card hole that cooperates with the buckle.

8. The quick connector with bilateral buttons for overpressure unlocking according to claim 3, characterized in that The limiting portion abuts against the locking and mating portion.

9. The quick connector with bilateral buttons for preventing overpressure unlocking according to claim 7, wherein The double-sided button is further provided with a limiting and holding portion, which is used to abut against the insertion tube of the male connector.

10. The double-sided button quick connector for preventing overvoltage unlocking according to claim 1, characterized in that, The double-sided button is made of glass fiber modified nylon.

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