Z-70 quick connector with anti-seismic and anti-falling functions

Abstract

The utility model relates to the technical field of quick connectors, in particular to a Z-70 quick connector with anti-seismic and anti-falling functions. The utility model relates to an anti-drop connector, which comprises a main connector, an auxiliary connector and an anti-drop mechanism, the anti-drop mechanism comprises a threaded cover, a sleeve, an elastic piece, a sawtooth ring and helical tooth openings, one end of the threaded cover is fixedly connected with the sawtooth ring, the outer surface of the sleeve is provided with at least one helical tooth opening, and the helical tooth openings are elastically installed in a notch of the sleeve through the elastic piece. The sawtooth ring extrudes the oblique tooth opening to enable the oblique tooth opening to elastically contract along the notch until the sawtooth ring is completely meshed with the oblique tooth opening; at the moment, the elastic piece drives the oblique tooth opening to reset, the tooth face of the oblique tooth opening and the tooth face of the sawtooth ring form one-way mechanical locking, it is ensured that the connector can still keep stable meshing in the vibration environment, the anti-vibration and anti-falling effect of the connector is effectively improved, and use is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of quick coupling technology, specifically to a Z-70 quick coupling with anti-vibration and anti-detachment function. Background Technology

[0002] Quick couplings are devices used for connecting gas pipelines. The traditional method involves inserting a round flexible tube into a rubber ring for snapping. This technology is simple to insert, but the flexible tube connection is prone to poor sealing, and the structure of directly snapping the flexible tube is unreliable and easy to fall off.

[0003] When designing quick connectors, anti-detachment functionality needs to be considered. To address this, Chinese Patent Publication No. CN221647822U provides an anti-detachment quick connector. During installation, the sealing ring is first placed in the mounting groove of the auxiliary connector. Then, the auxiliary connector is rotated and installed onto the main connector. Next, the sleeve is fitted onto the auxiliary connector, and a limiting protrusion provides restraint. Finally, the threaded cap is fitted onto the main connector and tightened onto the sleeve for tension. Compared to a plug-in type, this provides better stability, thus preventing the main and auxiliary connectors from detaching. For disassembly, the threaded cap is unscrewed, and then the threaded cap and sleeve are slid out separately. Finally, the auxiliary connector is unscrewed from the main connector. This improves the stability and effectiveness of the connector in preventing detachment during use, making it more convenient to use.

[0004] Because existing technologies rely on the tightening force of the threaded cap to prevent the quick coupling from coming off, the threaded pair may loosen under vibration, thus causing the quick coupling's anti-loosening function to fail. Utility Model Content

[0005] This utility model provides a Z-70 quick connector with anti-vibration and anti-loosening functions. When the threaded cap is tightened and engaged with the sleeve, a serrated ring on one side of the threaded cap compresses the helical toothed opening, causing it to elastically contract. When the serrated ring and the helical toothed opening are fully engaged, an elastic element drives the helical toothed opening to elastically reset, providing one-way mechanical locking to the serrated ring. This solves the problems mentioned in the background art, namely:

[0006] In existing technologies, the anti-disengagement function of quick couplings is achieved solely by the tightening force of the threaded cap. However, when the quick coupling is in a vibrating environment, the threaded pair may loosen due to self-rotation, thus causing the anti-disengagement function of the quick coupling to fail.

[0007] To achieve the above objectives, the quick coupling device includes a main connector, an auxiliary connector, and an anti-detachment mechanism, wherein the anti-detachment mechanism includes a threaded cap, a sleeve, an elastic element, a serrated ring, and a helical tooth.

[0008] One end of the threaded cap is fixedly connected to a serrated ring, and at least one oblique tooth is opened on the outer surface of the sleeve. The oblique tooth is elastically installed in the groove of the sleeve by an elastic element.

[0009] In the above technical solution, when the threaded cap and the sleeve are screwed together, the serrated ring squeezes the oblique tooth opening, causing it to elastically contract along the groove until the serrated ring and the oblique tooth opening are fully engaged; at this time, the elastic element drives the oblique tooth opening to reset, so that the tooth surface of the oblique tooth opening and the tooth surface of the serrated ring form a one-way mechanical lock.

[0010] Based on this, the threaded end of the auxiliary connector is provided with a sealing ring, and the outer sides of the main connector and the auxiliary connector are fixedly installed with limit rings. When the threaded cover is tightened to the preset position of the sleeve, the limit ring is embedded in the annular limit groove of the sleeve. When the main connector and the auxiliary connector are threadedly connected, the compression of the sealing ring increases linearly with the tightening degree of the threaded cover. At this time, the limit rings fixedly installed on the outer sides of the main connector and the auxiliary connector form a fixed distance. When the threaded cover and the sleeve are threadedly tightened, the annular limit grooves of both contact the limit rings on the outer sides of the main connector and the auxiliary connector respectively, so that the main connector and the auxiliary connector can be fixed a second time while tightening.

[0011] In another technical solution, the axial length ratio of the serrated ring to the helical tooth is 1:2, so that the serrated ring and the helical tooth form an interference fit, maintaining the stability of the preload of the elastic element and avoiding local separation under vibration environment.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] When the threaded cap is tightened and fitted with the sleeve, the serrated ring on one side of the threaded cap squeezes the helical tooth opening, causing it to elastically contract. When the serrated ring and the helical tooth opening are fully engaged, the elastic element drives the helical tooth opening to elastically reset, and performs one-way mechanical locking on the serrated ring. This ensures that the joint can maintain stable engagement even under vibration, effectively improving the joint's shock resistance and preventing it from falling off, and making it more convenient to use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a partial structural diagram of the anti-detachment mechanism of this utility model;

[0016] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0017] The meanings of the labels in the diagram are as follows:

[0018] 100. Main connector; 101. Auxiliary connector;

[0019] 200. Anti-detachment mechanism; 201. Threaded cap; 202. Sleeve; 203. Slanted toothed end; 204. Serrated ring; 205. Elastic element; 206. Limiting ring; 207. Sealing ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Currently, existing technologies rely solely on the tightening force of the threaded cap 201 to prevent the quick coupling from slipping off. However, when the quick coupling is exposed to vibration, the threaded pair may loosen due to self-rotation, causing the anti-slip function to fail. This invention provides a Z-70 quick coupling with anti-vibration and anti-slip functionality. (See [link]) Figures 1-3 As shown, it includes a main connector 100, an auxiliary connector 101 and an anti-detachment mechanism 200. The anti-detachment mechanism 200 includes a threaded cap 201, a sleeve 202, an elastic element 205, a serrated ring 204 and a helical tooth 203.

[0022] One end of the threaded cap 201 is fixedly connected to a serrated ring 204, and at least one oblique tooth 203 is opened on the outer surface of the sleeve 202. The oblique tooth 203 is elastically installed in the groove of the sleeve 202 through an elastic element 205.

[0023] In use, after tightening the threads of the main connector 100 and the auxiliary connector 101, the sleeve 202 is nested around the outer side of the auxiliary connector 101 along its axis, and then the threaded cap 201 is nested around the outer side of the main connector 100. Rotation is achieved through thread engagement. When the threaded cap 201 and the sleeve 202 are tightened together, the serrated ring 204 presses the helical tooth 203 to elastically contract along the groove until the serrated ring 204 and the helical tooth 203 are fully engaged. At this time, the elastic element 205 drives the helical tooth 203 to reset, so that the tooth surface of the helical tooth 203 and the tooth surface of the serrated ring 204 form a one-way mechanical lock.

[0024] Assembly and locking process of quick couplings:

[0025] The sealing ring 207 is fitted onto the threaded end of the auxiliary connector 101, and the main connector 100 and the auxiliary connector 101 are connected by screwing on the threads. At this time, the sealing ring 207 is deformed by pressure and a preliminary seal is formed. The sleeve 202 is fitted onto the outside of the auxiliary connector 101, and the oblique tooth 203 on its outer surface is elastically embedded into the groove of the sleeve 202 through the elastic element 205. In this embodiment, the elastic element 205 is preferably a spring.

[0026] When in use, the operator can tighten the threaded cap 201, and the serrated ring 204 at its end will gradually squeeze the oblique tooth 203, forcing the oblique tooth 203 to elastically contract inward along the groove of the sleeve 202.

[0027] When the threaded cap 201 is tightened until the limiting ring 206 is in close contact with it, the serrated ring 204 and the helical tooth 203 are fully engaged. The elastic element 205 drives the helical tooth 203 to reset outward, so that the tooth surfaces of the two form a one-way lock. Reverse rotation is blocked by the helical tooth angle. At this time, the main connector 100 and the auxiliary connector 101 form a triple constraint through threaded connection, compression of sealing ring 207, and locking of serrated ring 204 and helical tooth 203, so as to achieve shock resistance, anti-disengagement and sealing.

[0028] Verification of the dimensional ratio optimization between serrated ring 204 and helical tooth 203:

[0029] In this embodiment, the axial length of the serrated ring 204 is set to 5mm, and the axial length of the helical tooth 203 is set to 10mm, which conforms to the axial length ratio of 1:2. Vibration testing comparison revealed that:

[0030] When the ratio is less than or equal to 1:2, the restoring force of the elastic element 205 is sufficient to maintain the stable meshing of the helical tooth 203 and the sawtooth ring 204, and no tooth dislodgement occurs.

[0031] When the ratio is greater than 1:2, the excessive length of the helical tooth 203 leads to insufficient preload of the elastic element 205, which can easily cause local detachment under vibration.

[0032] Working principle: In use, the operator can achieve initial tightening through the threaded connection between the main connector 100 and the auxiliary connector 101. Then, the threaded cap 201 and the sleeve 202 are respectively nested on the outside of the main connector 100 and the auxiliary connector 101. By tightening the threads, the serrated ring 204 of the threaded cap 201 in the anti-loosening mechanism 200 squeezes the helical tooth 203 on the sleeve 202 during the tightening process, forcing the helical tooth 203 to elastically contract along the groove. When fully engaged, the elastic element 205 drives the helical tooth 203 to reset, so that the inclined tooth surfaces of the two form a one-way mechanical lock. Reverse rotation is blocked by the tooth surface inclination angle, thereby resisting the self-rotation loosening of the threaded pair caused by vibration.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A Z-70 quick connector with anti-vibration and anti-detachment function, comprising a main connector (100), an auxiliary connector (101), and an anti-detachment mechanism (200), characterized in that: The anti-detachment mechanism (200) includes a threaded cap (201), a sleeve (202), an elastic element (205), a serrated ring (204), and a helical toothed mouth (203); One end of the threaded cap (201) is fixedly connected to a sawtooth ring (204), and at least one oblique tooth (203) is opened on the outer surface of the sleeve (202). The oblique tooth (203) is elastically installed in the groove of the sleeve (202) by an elastic element (205). When the threaded cap (201) and the sleeve (202) are screwed together, the serrated ring (204) presses the helical tooth (203) to elastically contract along the groove until the serrated ring (204) and the helical tooth (203) are fully engaged; at this time, the elastic element (205) drives the helical tooth (203) to reset, so that the tooth surface of the helical tooth (203) and the tooth surface of the serrated ring (204) form a one-way mechanical lock.

2. The Z-70 quick connector with anti-vibration and anti-detachment function according to claim 1, characterized in that: The main connector (100) and the auxiliary connector (101) are connected by a threaded connection.

3. The Z-70 quick connector with anti-vibration and anti-detachment function according to claim 1, characterized in that: The threaded end of the auxiliary connector (101) is provided with a sealing ring (207).

4. The Z-70 quick connector with anti-vibration and anti-detachment function according to claim 1, characterized in that: Limiting rings (206) are fixedly installed on the outside of the main connector (100) and auxiliary connector (101). When the threaded cover (201) is tightened to the preset position of the sleeve (202), the limiting rings (206) are embedded in the annular limiting groove of the sleeve (202).

5. The Z-70 quick connector with anti-vibration and anti-detachment function according to claim 1, characterized in that: The two ends of the elastic element (205) are fixedly connected to the bottom of the oblique toothed opening (203) and the inner wall of the sleeve (202) groove, respectively.

6. The Z-70 quick connector with anti-vibration and anti-detachment function according to claim 1, characterized in that: The preload direction of the elastic element (205) is consistent with the reset movement direction of the helical toothed mouth (203).

7. The Z-70 quick connector with anti-vibration and anti-detachment function according to claim 1, characterized in that: The ratio of the axial length of the sawtooth ring (204) to the axial length of the helical tooth (203) is 1:2.

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