A fire hose locking interface

Abstract

This invention discloses a fire hose locking interface, belonging to the field of fire hoses. It includes a connecting outer ring, a connecting cylinder fixedly installed on the inner wall of the connecting outer ring, a hose fitting fixedly installed on the inner wall of the connecting cylinder, a nozzle assembly inserted into the inside of the connecting outer ring, a snap-fit ​​component fixedly installed on the outer wall of the nozzle assembly, and a positioning slot formed on the inner wall of the connecting outer ring, the shape of which is adapted to the snap-fit ​​component. The beneficial effects of this invention are: by forming a positioning slot on the connecting outer ring, it can form a fixing effect with the snap-fit ​​component on the nozzle assembly, while simultaneously providing a second connection between the hose connector and the hose body via threads. This provides better connection tightness while maximizing rapid assembly and avoiding complex operation, preventing the connection from breaking due to water pressure issues during firefighting.

Description

Technical Field

[0001] This invention relates to the field of fire hoses, and more specifically, to a fire hose locking interface. 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 of flax woven fabric. Advanced fire hoses are made of polymer materials such as polyurethane. Both ends of a fire hose have metal connectors, which can be connected to another hose to extend the distance or to a nozzle to increase the liquid spray pressure. They are flexible tubes used for water delivery at fire scenes. According to the material, they can be divided into lined fire hoses and unlined fire hoses. Unlined fire hoses have low pressure resistance, high resistance, are prone to leakage, and are susceptible to mildew and corrosion, resulting in a shorter lifespan. They are suitable for laying in fire scenes inside buildings. Lined fire hoses are resistant to high pressure, wear, and mildew, are durable, and are not prone to leakage. They have low resistance, can be bent and folded at will, and can be moved at will, making them convenient to use. They are suitable for laying in external fire scenes and connecting to fire trucks.

[0003] In fire rescue operations, fire hoses are crucial equipment for transporting fire-fighting water or foam mixtures. However, existing fire hose connectors are connected by rotating clamps for quick splicing, which may result in poor sealing, insecure connections, and easy detachment. Especially when the hose is pulled quickly or subjected to external impact, the connectors are prone to loosening or coming apart, affecting the normal supply of fire-fighting water and potentially endangering the lives of rescue personnel. Summary of the Invention

[0004] To overcome the problem of easy breakage at the fire hose interface in the prior art, the present invention provides a fire hose locking interface, including a connecting outer ring, a connecting cylinder fixedly installed on the inner wall of the connecting outer ring, and a hose connecting fitting fixedly installed on the inner wall of the connecting cylinder;

[0005] A nozzle assembly is inserted into the inner part of the connecting outer ring, and a snap-fit ​​assembly is fixedly installed on the outer wall of the nozzle assembly;

[0006] The inner wall of the connecting outer ring is provided with a positioning slot, the shape of which is adapted to the snap-fit ​​assembly.

[0007] Preferably, the connecting pipe fitting includes a pipe body, which is fixedly installed on the inner wall of the connecting cylinder. The outer surface of the pipe body is provided with a groove, and the inner wall of the pipe body near one end of the connecting cylinder is provided with a connecting thread.

[0008] The groove increases the space at the connection between the pipe and the connecting sleeve, thus providing more installation area to accommodate the soft water hose.

[0009] Preferably, the nozzle assembly includes a socket that is inserted into the interior of the connecting outer ring. A nozzle is fixedly installed on the side of the socket away from the connecting outer ring. A connecting tube is fixedly installed at the center of the interior of the socket. The outer wall of the connecting tube is provided with mating threads that are compatible with the connecting threads.

[0010] The threaded connection method satisfies both the need for quick assembly and disassembly and the need for stability.

[0011] Preferably, the snap-fit ​​assembly includes a sleeve, which is fixedly installed on the outer wall of the socket. A telescopic spring is fixedly installed inside the sleeve. A limiting slide plate is fixedly installed at the telescopic end of the telescopic spring. A snap-fit ​​rod is fixedly installed at the end of the limiting slide plate away from the telescopic spring. A limiting slide rail is fixedly installed on the inner wall of the sleeve. The limiting slide plate and the limiting slide rail are slidably connected.

[0012] The locking lever, which expands and contracts via a telescopic spring, engages with the positioning slot to provide additional securing effect.

[0013] Preferably, the shape of the locking rod is adapted to the positioning slot.

[0014] Preferably, a soft water hose is fitted over the outside of the pipe body, with one end of the soft water hose fitting into the groove, and the soft water hose is fixedly connected to the pipe body by a cable tie.

[0015] Cable ties are used to reinforce the connection between the soft water hose and the pipe body. They also have good plasticity, which can prevent the reinforced soft water hose from falling off the pipe body.

[0016] Beneficial effects:

[0017] The beneficial effects of adopting the technical solution of this invention are as follows:

[0018] (1) By opening a positioning slot on the connecting outer ring, a fixing effect can be formed with the snap-fit ​​component on the nozzle assembly. At the same time, a second connection effect is formed between the pipe and the pipe body through the thread. While satisfying the need for quick assembly and avoiding complex operation, better connection tightness is provided, and the problem of disconnection at the joint due to water pressure problems during emergency rescue and firefighting is avoided.

[0019] (2) By opening a groove on the outer surface of the tube, the connection between the tube and the connecting tube will form a larger space due to the groove, allowing a larger area of ​​soft water hose to be inserted into the connection. Finally, it is tied with multiple sections of cable ties, which not only avoids the tightness of the connection at the nozzle assembly but also strengthens the connection strength between the soft water hoses. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is an exploded view of the structure of the present invention;

[0023] Figure 3 This is a top-view exploded view of the structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the connecting pipe fitting of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the outer ring of the present invention;

[0026] Figure 6 This is a schematic diagram of the connection structure between the connecting cylinder and the connecting pipe fitting of the present invention;

[0027] Figure 7 This is a cross-sectional view of the snap-fit ​​assembly of the present invention.

[0028] In the diagram: 1. Connecting outer ring; 10. Positioning slot; 2. Connecting cylinder; 3. Connecting pipe fitting; 30. Pipe body; 31. Groove; 32. Connecting thread; 4. Nozzle assembly; 40. Socket; 41. Nozzle; 42. Connecting pipe; 43. Connecting thread; 5. Snap-fit ​​assembly; 50. Sleeve; 51. Telescopic spring; 52. Limiting slide plate; 53. Snap-fit ​​rod; 54. Limiting slide rail; 6. Soft water hose. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments. Specific embodiments are as follows:

[0031] like Figures 1 to 7 As shown, a fire hose locking interface includes a connecting outer ring 1, a connecting cylinder 2 fixedly installed on the inner wall of the connecting outer ring 1, a hose connecting fitting 3 fixedly installed on the inner wall of the connecting cylinder 2, a nozzle assembly 4 inserted into the inner wall of the connecting outer ring 1, a snap-fit ​​assembly 5 fixedly installed on the outer wall of the nozzle assembly 4, a positioning slot 10 provided on the inner wall of the connecting outer ring 1, the shape of the positioning slot 10 being adapted to the snap-fit ​​assembly 5, the hose connecting fitting 3 including a pipe body 30, the pipe body 30 being fixedly installed on the inner wall of the connecting cylinder 2, a groove 31 provided on the outer surface of the pipe body 30, and a connecting thread 32 provided on the inner wall of the pipe body 30 near the end of the connecting cylinder 2, and the nozzle assembly 4 including a socket 40, the socket 40 being inserted into the nozzle assembly 4. Inside the connecting outer ring 1, a nozzle 41 is fixedly installed on the side of the socket 40 away from the connecting outer ring 1. A connecting tube 42 is fixedly installed at the center of the socket 40. The outer wall of the connecting tube 42 is provided with a mating thread 43, which is compatible with the connecting thread 32. During assembly, the snap-fit ​​component 5 is pressed to retract, and the nozzle component 4 is inserted into the connecting outer ring 1. When the snap-fit ​​component 5 is limited, the connecting outer ring 1 is rotated. During the rotation, the connecting thread 32 and the mating thread 43 will mesh, so that the connecting tube 42 and the tube body 30 are connected to each other. The snap-fit ​​component 5 will also pop out when it moves to the positioning slot 10, forming a double-layer fixing effect.

[0032] It should be noted that, in order to ensure a tight connection between the tube body 30 and the connecting tube 42, when installing the nozzle assembly 4, attention should be paid to the position of the snap-fit ​​component 5 to avoid the snap-fit ​​component 5 popping out directly from the positioning slot 10, which would result in insufficient rotation of the connecting tube 2 and the connecting tube 42. When the snap-fit ​​component 5 is vertically inserted into the connecting outer ring 1 and rotated 90 degrees, the mating thread 43 and the connecting thread 32 can be tightly connected.

[0033] The snap-fit ​​assembly 5 includes a sleeve 50, which is fixedly installed on the outer wall of the socket 40. A telescopic spring 51 is fixedly installed inside the sleeve 50. A limiting slide plate 52 is fixedly installed at the telescopic end of the telescopic spring 51. A snap-fit ​​rod 53 is fixedly installed at the end of the limiting slide plate 52 away from the telescopic spring 51. A limiting slide rail 54 is fixedly installed on the inner wall of the sleeve 50. The limiting slide plate 52 and the limiting slide rail 54 are slidably connected. The shape of the snap-fit ​​rod 53 is adapted to the positioning slot 10. When the snap-fit ​​assembly 5 moves to the positioning slot 10, the snap-fit ​​rod 53 will lose the inner wall limiting of the outer ring 1. At this time, the telescopic spring 51 resets and drives the limiting slide plate 52 and the snap-fit ​​rod 53 to pop out, so that the snap-fit ​​rod 53 passes through the positioning slot 10 to form a position.

[0034] The contact surface between the snap-fit ​​rod 53 and the inner wall of the connecting outer ring 1 is designed with an arc surface to reduce friction, allowing the entire snap-fit ​​assembly 5 to slide and adjust at the inner wall of the connecting outer ring 1.

[0035] In addition, a soft water hose 6 is fitted on the outside of the pipe body 30. One end of the soft water hose 6 is attached to the groove 31. The soft water hose 6 is fixedly connected to the pipe body 30 by cable ties. The outer surface of the pipe body 30 has a groove 31. After the pipe body 30 is connected to the connecting cylinder 2, more space will be generated at the connection due to the groove 31, which allows the soft water hose 6 to be better inserted into the gap. It is also sealed by multiple layers of cable ties, which improves the connection strength.

[0036] It should be noted that cable ties are a common and practical means of fixing. Other types of rope-like fixing structures can also meet the fixing requirements, but the tightness and convenience may be affected. In addition, the soft water hose has six parts that are easily worn, so for easy replacement, they are not connected in an integrated fixing method.

[0037] Working principle: The nozzle 41 and the connecting pipe 42 are installed simultaneously through the socket 40, and the pipe body 30 is provided with a mating thread 43 for connecting the connecting pipe 42. The outer wall of the socket 40 is also provided with an additional locking component 5 for fixing. When the nozzle assembly 4 is connected to the connecting outer ring 1, a double-layer fixing effect is formed by the locking component 5, the connecting pipe 42 and the pipe body 30, making the connection tighter and preventing the connection from breaking due to water pressure.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A fire hose locking interface, characterized in that, It includes a connecting outer ring (1), a connecting cylinder (2) is fixedly installed on the inner wall of the connecting outer ring (1), and a connecting pipe fitting (3) is fixedly installed on the inner wall of the connecting cylinder (2); A nozzle assembly (4) is inserted into the inner part of the connecting outer ring (1), and a snap-fit ​​assembly (5) is fixedly installed on the outer wall of the nozzle assembly (4). The inner wall of the connecting outer ring (1) is provided with a positioning slot (10), and the shape of the positioning slot (10) is adapted to the snap-fit ​​assembly (5).

2. The fire hose locking interface according to claim 1, characterized in that, The connecting pipe fitting (3) includes a pipe body (30), which is fixedly installed on the inner wall of the connecting cylinder (2). The outer surface of the pipe body (30) is provided with a groove (31), and the inner wall of the pipe body (30) near the connecting cylinder (2) is provided with a connecting thread (32).

3. A fire hose locking interface according to claim 2, characterized in that, The nozzle assembly (4) includes a socket (40) which is inserted into the interior of the connecting outer ring (1). A nozzle (41) is fixedly installed on the side of the socket (40) away from the connecting outer ring (1). A connecting pipe (42) is fixedly installed at the center of the interior of the socket (40). The outer wall of the connecting pipe (42) is provided with a mating thread (43), which is compatible with the connecting thread (32).

4. A fire hose locking interface according to claim 3, characterized in that, The snap-fit ​​assembly (5) includes a sleeve (50), which is fixedly installed on the outer wall of the socket (40). A telescopic spring (51) is fixedly installed inside the sleeve (50). A limiting slide plate (52) is fixedly installed at the telescopic end of the telescopic spring (51). A snap-fit ​​rod (53) is fixedly installed at the end of the limiting slide plate (52) away from the telescopic spring (51). A limiting slide rail (54) is fixedly installed on the inner wall of the sleeve (50). The limiting slide plate (52) and the limiting slide rail (54) are slidably connected.

5. A fire hose locking interface according to claim 4, characterized in that, The shape of the snap-fit ​​rod (53) is adapted to the positioning slot (10).

6. A fire hose locking interface according to claim 2, characterized in that, The pipe body (30) is fitted with a soft water hose (6), one end of which is attached to the groove (31), and the soft water hose (6) is fixedly connected to the pipe body (30) by a cable tie.

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