A type of anti-detachment quick connector and fire hose

Abstract

This utility model discloses an anti-detachment quick connector and fire hose, relating to the field of fire equipment technology. It includes a first connector and a second connector. The first connector has two symmetrically symmetrically arranged slots on its peripheral side. The second connector has two symmetrically slidably connected inserts, each insert corresponding to one of the slots. Each insert has a first slider on one side, and each slider has a connecting rod hinged to one side. The second connector has a second sliding groove, within which a screw is rotatably connected. A second slider is screwed onto the screw and slidably connected within the groove. One end of each connecting rod is hinged to the top and bottom of the second slider, respectively. This utility model allows the first and second connectors to be fixed together by rotating the screw, enabling the two inserts to engage with the two slots, thus preventing disconnection due to increased water flow.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting equipment technology, specifically to an anti-detachment quick connector and a fire hose. Background Technology

[0002] Fire hoses are flexible tubes used to transport high-pressure water or flame-retardant liquids such as foam. Traditional fire hoses have a rubber inner lining and an outer layer covered with woven linen. Advanced fire hoses are made of composite materials such as polyurethane. Both ends of the fire hose have metal connectors, which can be connected to another hose to extend the distance or to nozzles to increase the liquid spray pressure.

[0003] The existing fire hose connectors are plug-in type. If the water flow for fire fighting is huge during the connection process, the pressure inside the hose and the buckle will increase, which will increase the possibility of the hose joint falling off and affect the stability during actual use. Utility Model Content

[0004] The purpose of this invention is to provide an anti-detachment quick-connect coupling and fire hose to address the shortcomings of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: The anti-detachment quick connector includes a first connector and a second connector. Two slots are symmetrically provided on the peripheral side of the first connector. Two plugs are symmetrically slidably connected inside the second connector. The two plugs are inserted into the two slots in a one-to-one correspondence. A first slider is provided on the side of each of the two plugs that is far apart. A connecting rod is hinged to one side of each of the two first sliders. A second groove is provided inside the second connector. A screw is rotatably connected inside the second groove. A second slider is screwed onto the screw. The second slider is slidably connected inside the second groove. The ends of the two connecting rods that are close to each other are respectively hinged to the top and bottom of the second slider.

[0006] Furthermore, the inner wall of the second connector is provided with a limiting ring, and an annular groove is formed in the limiting ring. One end of the first connector is provided with a retaining ring, which is engaged in the groove.

[0007] Furthermore, a knob is coaxially fixedly connected to the end of the screw away from the first connector, and the knob has anti-slip texture.

[0008] Furthermore, two first sliding grooves are symmetrically formed inside the second connector, and the two first sliders are slidably connected in the two first sliding grooves respectively.

[0009] Furthermore, two second marks are symmetrically provided on one side of the second connector, and two second marks are symmetrically provided on the peripheral side of the first connector.

[0010] This utility model also provides a fire hose, including the anti-detachment quick connector described in any of the above claims.

[0011] Compared with the prior art, the beneficial effects provided by this utility model are as follows: This anti-detachment quick connector can drive the second slider to move along the length of the screw by rotating the screw, thereby causing the two connecting rods to swing. At the same time, the other end of the two connecting rods drives the two first sliders to move closer together, so that the two first sliders drive the two inserts to move toward the corresponding slots. When the two inserts are respectively inserted into the two slots, the first connector and the second connector are fixedly installed together, thereby preventing the first connector and the second connector from disconnecting due to an increase in water flow, thus improving the practical stability of the device. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0013] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0014] Figure 2 Top view of the overall structure provided for an embodiment of this utility model;

[0015] Figure 3 for Figure 2 Sectional view at point AA;

[0016] Figure 4 for Figure 2 Sectional view at BB in the middle;

[0017] Figure 5 This is a schematic diagram of the structure of the first connector provided in an embodiment of the present utility model;

[0018] Figure 6 This is a schematic diagram of the structure of the second connector provided in an embodiment of the present utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. First connector; 2. Second connector; 3. First mark; 4. Second mark; 5. Knob; 6. Limiting ring; 7. Snap ring; 8. Snap groove; 9. Slot; 10. First slide groove; 11. Insert block; 12. First slider; 13. Connecting rod; 14. Second slider; 15. Screw; 16. Disc; 17. Second slide groove. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] Please see Figure 1-6 The present invention provides a technical solution: the anti-detachment quick connector includes a first connector 1 and a second connector 2. Two slots 9 are symmetrically provided on the peripheral side of the first connector 1. Two inserts 11 are symmetrically slidably connected inside the second connector 2, and the two inserts 11 are inserted into the slots 9 in a one-to-one correspondence. A first slider 12 is provided on the side of each of the two inserts 11 that is far apart from each other. A connecting rod 13 is hinged to one side of each of the two first sliders 12. A second groove 17 is provided inside the second connector 2, and a screw 15 is rotatably connected inside the second groove 17. A second slider 14 is screwed onto the screw 15 and slidably connected inside the second groove 17. The ends of the two connecting rods 13 that are close to each other are hinged to the top and bottom of the second slider 14, respectively. Specifically, the screw 15 can be rotated to drive the connection through its helical transmission. The second slider 14 moves along the length of the screw 15, causing the two connecting rods 13 to swing. At the same time, the other ends of the two connecting rods 13 drive the two first sliders 12 to move closer together, so that the two first sliders 12 drive the two inserts 11 to move toward the corresponding slots 9. When the two inserts 11 are inserted into the two slots 9 respectively, the first connector 1 and the second connector 2 are fixedly installed together, thereby preventing the first connector 1 and the second connector 2 from disconnecting due to the increase in water flow, thus improving the practical stability of the device. Preferably, a disc 16 is coaxially provided at the end of the screw 15 near the first connector 1. The longitudinal cross-sectional area of ​​the disc 16 is larger than the longitudinal cross-sectional area of ​​the screw 15. The disc 16 is rotatably connected in the second connector 2, which can limit the movement of the screw 15 in the length direction, so that the screw 15 can only rotate in the second groove 17.

[0022] As a preferred technical solution, the inner wall of the second connector 2 is provided with a limiting ring 6, and an annular groove 8 is opened in the limiting ring 6. One end of the first connector 1 is provided with a retaining ring 7, which is engaged in the groove 8. Specifically, the first connector 1 can be engaged in the groove 8 by the retaining block, so that the relative position of the first connector 1 and the second connector 2 in the axial direction can be determined first, so as to avoid the subsequent insertion block 11 not being able to be accurately inserted into the slot 9.

[0023] As a preferred technical solution, a knob 5 is coaxially fixedly connected to the end of the screw 15 away from the first connector 1. The knob 5 has anti-slip texture. Specifically, the knob 5 can facilitate the rotation of the screw 15, solving the problem that the screw 15 is not easy to rotate. Considering the long-term repetitive operation of the operator, the crank handle can reduce the discomfort caused to the operator's hands by repetitive operation, thereby further bringing convenience to the operator. The anti-slip texture can increase the friction between the screw and the operator's hands and prevent slippage.

[0024] As a preferred technical solution, two first sliding grooves 10 are symmetrically provided in the second connector 2, and two first sliders 12 are slidably connected in the two first sliding grooves 10 respectively. Specifically, by setting the first sliding grooves 10, the movement path of the first sliders 12 and the plugs 11 can be limited, so that the two plugs 11 can be accurately inserted into the two slots 9.

[0025] As a preferred technical solution, two second marks 4 are symmetrically provided on one side of the second connector 2, and two second marks 4 are symmetrically provided on the peripheral side of the first connector 1. Specifically, the direction and position of the first connector 1 to be connected to the second connector 2 can be determined by the first mark 3 and the second mark 4, which facilitates the quick installation of the first connector 1 and the second connector 2.

[0026] This utility model also provides a fire hose, including the anti-detachment quick connector of any of the above.

[0027] Working principle: This anti-detachment quick connector can first be engaged in the slot 8 by the locking block of the first connector 1. The relative position of the first connector 1 and the second connector 2 in the axial direction can be determined first. Then, according to the first mark 3 and the second mark 4, the first connector 1 is rotated. Then, the screw 15 can be rotated by the knob 5. The screw 15 drives the second slider 14 to move along the length of the screw 15 through the helical transmission, causing the two connecting rods 13 to swing. At the same time, the other end of the two connecting rods 13 drives the two first sliders 12 to move closer together, so that the two first sliders 12 drive the two inserts 11 to move toward the corresponding slots 9. When the two inserts 11 are respectively inserted into the two slots 9, the first connector 1 and the second connector 2 are fixed together, thereby preventing the first connector 1 and the second connector 2 from disconnecting due to the increase of water flow, thus improving the practical stability of the device.

[0028] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A quick connector of the anti -pull out type, characterized in that, The device includes a first connector (1) and a second connector (2). The first connector (1) has two slots (9) symmetrically opened on its peripheral side. The second connector (2) has two inserts (11) symmetrically slidably connected inside. The two inserts (11) are inserted into the slots (9) one by one. The two inserts (11) are provided with a first slider (12) on the side away from each other. A connecting rod (13) is hinged to one side of each of the two first sliders (12). The second connector (2) has a second groove (17) opened inside. A screw (15) is rotatably connected inside the second groove (17). A second slider (14) is screwed onto the screw (15). The second slider (14) is slidably connected inside the second groove (17). The two connecting rods (13) are respectively hinged to the top and bottom of the second slider (14).

2. The anti-disconnection quick interface according to claim 1, characterized in that, The inner wall of the second connector (2) is provided with a limiting ring (6), and an annular groove (8) is opened in the limiting ring (6). One end of the first connector (1) is provided with a retaining ring (7), which is engaged in the groove (8).

3. The anti-disconnection quick interface according to claim 1, characterized in that, A knob (5) is coaxially fixedly connected to one end of the screw (15) away from the first connector (1), and the knob (5) has anti-slip texture.

4. The anti-disconnection quick interface according to claim 1, characterized in that, The second connector (2) has two first grooves (10) symmetrically opened inside, and the two first sliders (12) are respectively slidably connected in the two first grooves (10).

5. The anti-disconnection quick interface according to claim 1, characterized in that, Two second marks (4) are symmetrically provided on one side of the second connector (2), and two second marks (4) are symmetrically provided on the peripheral side of the first connector (1).

6. A fire hose, characterized in that, Includes the anti-detachment quick interface as described in any one of claims 1-5.

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