Quick connector of fuel gas corrugated pipe

Abstract

The utility model provides a quick connector of a fuel gas corrugated pipe, and belongs to the technical field of fuel gas pipelines. The problem that potential safety hazards exist when an existing quick connector is used is solved. The quick connector of the fuel gas corrugated pipe comprises a locking nut, a connector body, a sealing gasket and a clamping piece, the sealing gasket is arranged at the end, facing the locking nut, of the connector body, the inner side of the locking nut is provided with an annular protruding shoulder, the clamping piece is arranged between the sealing gasket and the protruding shoulder, and the inner side of the clamping piece is provided with a clamping part protruding inwards. The quick connector of the fuel gas corrugated pipe further comprises an annular insulating ring made of insulating materials, the insulating ring is arranged on the outer side of the clamping piece in a sleeving mode, the outer side face of the insulating ring can abut against the inner wall of the locking nut, and the end, facing the protruding shoulder, of the insulating ring is provided with an annular blocking edge protruding inwards. And the blocking edge is positioned between the clamping piece and the convex shoulder. The quick connector of the fuel gas corrugated pipe can effectively avoid potential safety hazards.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas pipelines and relates to a quick connector for a gas bellows. Background Art

[0002] In daily life, gas is one of the indispensable energy sources for people. During the gas installation process, the gas pipes need to be connected and installed, and the connection convenience needs to be ensured at the same time.

[0003] To this end, the applicant has designed an improved quick connector for a gas bellows and applied for a Chinese patent with application number 201420454864.6 and publication number CN204004963U. The improved quick connector for a gas bellows comprises a locking nut, a connector, a sealing gasket sleeved on the bellows, and a clamping member clamped onto the side of the bellows. The inner end of the sealing gasket abuts against the outer end of the clamping member, the outer end of the sealing gasket is inserted into the inner end of the connector, the locking nut passes through the bellows and is threadedly connected to the inner end of the connector. The clamping member is located inside the locking nut and has an inner sidewall having a first annular flange and a second annular flange, each of which is capable of being respectively engaged with two adjacent troughs on the bellows. The improved quick connector for a gas bellows achieves a secure connection between the quick connector and the bellows by having two protruding flanges on the inner side of the clamping member engage with the outer side of the bellows.

[0004] However, as the scope of gas application continues to expand, some gas pipelines need to be used with electrical appliances, such as gas stoves. During long-term use, there is a possibility of electrical leakage. In order to ensure strength, quick connectors and bellows are made of metal materials, which may transmit leakage from the electrical appliances to other locations, posing certain safety hazards. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems existing in the prior art and to propose a quick connector for a gas bellows, thereby solving the problem of potential safety hazards when using the existing quick connector.

[0006] The purpose of this utility model can be achieved through the following technical solutions:

[0007] The quick connector of the gas bellows includes a locking nut, a joint, a sealing gasket and a clip, all of which are in the shape of a circular ring. One end of the locking nut is threadedly connected to the outer side of one end of the joint. The sealing gasket is arranged at the end of the joint facing the locking nut. The inner side of the locking nut has a protruding circular shoulder. The clip is arranged between the sealing gasket and the shoulder, and the inner side of the clip has a clipping portion protruding inward. It is characterized in that the quick connector of the gas bellows also includes an insulating ring in the shape of a circular ring made of insulating material. The insulating ring is sleeved on the outer side of the clip, and the outer side surface of the insulating ring can abut against the inner wall of the locking nut. The end of the insulating ring facing the above-mentioned shoulder has a retaining edge protruding inward in the shape of a circular ring, and the retaining edge is located between the clip and the shoulder.

[0008] When installing the quick connector of the gas bellows, first cut the insulating sleeve on the outside of the existing bellows end to expose the bellows, put the locking nut on the outside of the bellows, and then buckle the clamping piece with an insulating ring on the outside of the bellows. The clamping part on the inside of the clamping piece is inserted between two adjacent wave peaks on the outside of the bellows to achieve axial fixation of the clamping piece and the bellows. After the sealing gasket is installed into the joint, the ends of the sealing gasket and the joint are inserted into the locking nut, and the sealing gasket is pressed tightly against the clamping piece by screwing it in.

[0009] During the use of the quick connector of the gas bellows, the inner wall of the locking nut and the outer wall of the clip are separated by an insulating ring, the boss and one end of the clip are separated by a stop edge, and the other end of the clip is abutted against the sealing gasket, that is, the locking nut is connected to the bellows through the clip, and the other three directions of the clip except the inner side connected to the bellows are separated by insulating components, so that after the other end of the connector in the quick connector of the gas bellows is connected to an electrical appliance, even if the electrical appliance leaks electricity, it will not be transmitted to the clip and the bellows, eliminating safety hazards.

[0010] In the above-mentioned quick connector for the gas bellows, the insulating ring is an integrated structure and is made of plastic material. The integrated insulating ring structure is more stable and has better insulation effect.

[0011] In the aforementioned quick connector for the gas bellows, one end of the sealing gasket extends into the connector, and the other end of the sealing gasket has a protruding annular portion protruding from the outside. This portion, facing the end surface of the connector, abuts against the connector end. The sealing gasket, with one end extending into the connector, separates the connector from the bellows and provides a seal. The protruding portion at the other end allows the other end of the sealing gasket to tightly abut between the clamping member and the connector end when the lock nut and connector are threaded together, providing both insulation and sealing.

[0012] In the aforementioned quick connector for the gas bellows, the locking nut has a cylindrical extension at the other end relative to the connector that protrudes away from the connector. Conventional gas pipes include an internal bellows and an insulating sleeve surrounding the bellows. Installation of this quick connector for the gas bellows requires cutting and stripping the insulating sleeve from the connecting section of the gas pipe. During installation, the length of the insulating sleeve cut from the outer end of the bellows varies depending on the installer. The extension ensures that even if the installer cuts too much of the insulating sleeve, the sleeve still covers the bellows, reducing the risk of oxidation and external contact.

[0013] In the aforementioned gas bellows quick connector, the radial thickness of the extension portion is less than the radial thickness of the locking nut at the end closest to the connector. The extension portion primarily covers the outside of the bellows and can be relatively thin, thereby reducing the weight of the entire gas bellows quick connector.

[0014] In the above-mentioned quick connector for the gas bellows, the clamping member comprises a first and a second semicircular arc-shaped clamping flap, with the two ends of the first and second clamping flaps facing each other. The clamping member consisting of the two flaps can be conveniently fastened to the outside of the bellows.

[0015] Compared with the prior art, during the use of the quick connector of the gas bellows, the inner wall of the locking nut and the outer wall of the clip are separated by an insulating ring, the boss and one end of the clip are separated by a stop edge, and the other end of the clip is abutted against the sealing gasket, that is, the locking nut is connected to the bellows through the clip, and the other three directions of the clip except the inner side connected to the bellows are separated by insulating components, so that after the other end of the connector in the quick connector of the gas bellows is connected to an electrical appliance, even if the electrical appliance leaks electricity, it will not be transmitted to the clip and the bellows, eliminating safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of the quick connector of the gas bellows.

[0017] In the figure, 1, locking nut; 1a, boss; 1b, extension; 2, joint; 3, sealing gasket; 3a, convex portion; 4, clamping piece; 4a, clamping portion; 4b, clamping flap 1; 4c, clamping flap 2; 5, insulating ring; 5a, retaining edge; 6, bellows; 7, insulating sleeve. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figure 1As shown, the quick connector for the gas bellows comprises a locking nut 1, a connector 2, a sealing gasket 3, and a clamping member 4, all of which are annular. One end of the locking nut 1 is threadedly connected to the outside of one end of the connector 2, and the sealing gasket 3 is disposed on the end of the connector 2 facing the locking nut 1. One end of the sealing gasket 3 extends into the connector 2, and the outside of the other end of the sealing gasket 3 has a protruding annular convex portion 3a. The end surface of the protrusion 3a facing the end of the connector 2 abuts against the end of the connector 2. The inner side of the locking nut 1 has a protruding annular shoulder 1a, and the inner side of the clamping member 4 has an inwardly protruding annular clamping portion 4a. The clamping member 4 is disposed between the sealing gasket 3 and the shoulder 1a. When the connector 2 and the locking nut 1 are screwed toward each other along the threads, the sealing gasket 3 can be tightly pressed against the end surface of the clamping member 4. In this embodiment, the clamping member 4 includes a clamping flap 1 4b and a clamping flap 2 4c, both of which are semicircular arc-shaped, and the two ends of the clamping flap 1 4b and the two ends of the clamping flap 2 4c are in abutment against each other; the locking nut 1 is divided into three sections along the axial direction, including a connecting section, a transition section and an extension portion 1b, the connecting section has an internal thread for threaded connection with the joint 2, the transition section is located between the connecting section and the extension portion 1b, and the transition section forms the above-mentioned boss 1a between the inner side of one end of the joint 2 and the connecting section, and the inner diameter of the extension portion 1b is the same as the inner diameter of the transition section; the radial thickness of the locking nut 1 gradually decreases from one end close to the joint 2 to the other end.

[0020] The quick connector for the gas bellows also includes a circular insulating ring 5 made of insulating material. This insulating ring 5 is sleeved onto the outside of the clamping member 4, with the insulating sleeve 7 having an axial length greater than that of the clamping member 4. The outer surface of the insulating ring 5 can abut against the inner wall of the lock nut 1. The end of the insulating ring 5 facing the shoulder 1a has an inwardly projecting circular retaining edge 5a. The retaining edge 5a is located between the clamping member 4 and the shoulder 1a, and the inner diameter of the retaining edge 5a is greater than that of the clamping member 4. In this embodiment, the insulating ring 5 is a one-piece structure made of plastic.

[0021] When installing the quick connector of the gas bellows, first cut the insulating sleeve 7 on the outside of the bellows 6 at the connecting end of the existing gas pipe to expose the bellows 6, and then put the locking nut 1 on the outside of the bellows 6, and then buckle the clip 4 with the insulating ring 5 on the outside of the bellows 6, and the clip 4a on the inside of the clip 4 is inserted between two adjacent wave peaks on the outside of the bellows 6 to achieve axial fixation of the clip 4 and the bellows 6. After the sealing gasket 3 is installed into the joint 2, the ends of the sealing gasket 3 and the joint 2 are inserted into the locking nut 1, and the sealing gasket 3 is pressed tightly against the clip 4 by screwing it in, so that the boss 1a, the retaining edge 5a, the clip 4 and the sealing gasket 3 are tightly abutted in sequence.

[0022] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A quick connector for a gas bellows, comprising a locking nut (1), a connector (2), a sealing gasket (3) and a clamping member (4), all of which are in the shape of an annulus, wherein one end of the locking nut (1) is threadedly connected to the outer side of one end of the connector (2), the sealing gasket (3) is arranged at the end of the connector (2) facing the locking nut (1), the inner side of the locking nut (1) has a protruding shoulder (1a) in the shape of an annulus, the clamping member (4) is arranged between the sealing gasket (3) and the shoulder (1a), and the inner side of the clamping member (4) has a clamping portion (4a) protruding inwardly, characterized in that: The quick connector of the gas bellows further comprises an insulating ring (5) in the shape of a circular ring made of insulating material, wherein the insulating ring (5) is sleeved on the outside of the clamping member (4), and the outer side surface of the insulating ring (5) can abut against the inner wall of the locking nut (1), and the insulating ring (5) has an inwardly protruding circular ring-shaped retaining edge (5a) at one end facing the above-mentioned shoulder (1a), and the retaining edge (5a) is located between the clamping member (4) and the shoulder (1a).

2. The quick connector for the gas bellows according to claim 1, characterized in that: The insulating ring (5) is an integrated structure and is made of plastic material.

3. The quick connector for the gas bellows according to claim 1 or 2, characterized in that: One end of the sealing gasket (3) extends into the joint (2), and the outer side of the other end of the sealing gasket (3) has a protruding circular ring-shaped convex portion (3a), and the end surface of the convex portion (3a) facing one end of the joint (2) abuts against the end of the joint (2).

4. The quick connector for the gas bellows according to claim 1 or 2, characterized in that: The other end of the locking nut (1) relative to the joint (2) has a cylindrical extension portion (1b) protruding in a direction away from the joint (2).

5. The quick connector for the gas bellows according to claim 4, characterized in that: The radial thickness of the extension portion (1b) is smaller than the radial thickness of the end of the locking nut (1) close to the joint (2).

6. The quick connector for the gas bellows according to claim 1 or 2, characterized in that: The clamping member (4) comprises a first clamping flap (4b) and a second clamping flap (4c), both of which are semicircular arc-shaped, and the two ends of the first clamping flap (4b) and the two ends of the second clamping flap (4c) are pressed against each other.

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