A fire hose connector
The design of the L-shaped connecting hook and fixing mechanism solves the problem of fire hose connectors falling off under the impact of high-pressure water flow, achieving a fast and reliable connection, simplifying the operation process, and improving the strength and efficiency of the connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DOW (SUZHOU) TECH DEV CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-31
AI Technical Summary
Existing fire hose connectors are prone to detachment under the impact of high-pressure water flow, and the connection operation is cumbersome, making it impossible to quickly and reliably secure fire hoses.
It adopts an L-shaped connecting hook and a fixing mechanism. The connecting hook is inserted into the corresponding hook groove and the connecting seat is rotated to achieve quick connection. Combined with the fixing mechanism, rotation is prevented, and the locking mechanism and anti-slip texture are used to improve the fixing effect.
It enables rapid and reliable connection of fire hoses, improves the strength of the connection and ease of operation, and meets the needs of fire protection.
Smart Images

Figure CN224579942U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire hose technology, specifically a fire hose connector. Background Technology
[0002] Fire hoses are flexible tubes used to transport high-pressure water. Traditional fire hoses have a rubber inner lining and an outer layer of woven linen, while advanced fire hoses are made of polymer materials such as polyurethane. Both ends of the fire hose have metal connectors. Currently, fire hoses are typically fixed to the main body and the fire hydrant by tightening bolts. However, this method is not very secure. During firefighting, the high-pressure water flow from the fire hydrant entering the fire hose creates a significant impact, easily causing the fire hose to detach from the fire hydrant and affecting its normal use.
[0003] To address the aforementioned issues, utility model patent CN222823923U discloses a fire hose connector. This connector uses a pull plate to move a fixed rod along the inner wall of a cavity. A limiting plate on the outer wall of the fixed rod matches the size of the cavity, causing the spring on the outer wall of the fixed rod to compress as the limiting plate moves. By rotating the fixed plate, it is inserted into the mounting slot. Then, by releasing the pull plates on both sides, the elastic potential energy generated by the spring compression pushes the limiting plate to move, causing the fixed rod to insert into its corresponding holes. This secures the fixed plate and the fixing block, preventing the upper and lower connectors from disconnecting due to excessive water pressure and increasing the strength of the connection between the connectors.
[0004] However, in actual use, this connector requires threaded connection through a threaded groove and a threaded pipe, which is relatively cumbersome and cannot achieve quick connection between fire hoses, thus failing to meet the usage requirements. Utility Model Content
[0005] The purpose of this utility model is to provide a fire hose connector to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A fire hose connector includes: a first connector and a second connector, wherein connecting sleeves for fitting fire hoses are installed on opposite sides of the first connector and the second connector; multiple sets of connecting hooks are fixed at the end of the first connector near the second connector; a corresponding number of connecting hook slots are distributed at the end of the second connector near the first connector, and the connecting hooks are engaged in the connecting hook slots; and a fixing mechanism is installed between the first connector and the second connector to prevent the first connector from rotating relative to the second connector.
[0008] As a preferred embodiment, both the connecting hook groove and the connecting hook have L-shaped cross-sections.
[0009] As a preferred embodiment, the second connecting seat is further provided with multiple sets of mounting slots, and the first connecting seat is provided with a limiting slot at a corresponding position. The fixing mechanism includes a fixed seat rotatably mounted in the mounting slot, a sliding groove on the fixed seat, a fixed slide block slidably mounted in the sliding groove, a fixed insert extending from the side of the fixed slide block near the first connecting seat, a fixed slot in the limiting groove, the fixed insert block being inserted into the fixed slot, and a fixed spring installed in the sliding groove, with both ends of the fixed spring abutting against the fixed slide block and the corresponding side of the sliding groove, respectively.
[0010] As a preferred embodiment, a fixing cover plate is also installed on the fixing seat at the position corresponding to the sliding groove, and a fixing block is also installed on the fixing slide. A toggle groove is provided on the fixing cover plate at the position corresponding to the fixing block, and the fixing block passes through the toggle groove.
[0011] As a preferred embodiment, the end of the fixing block is provided with a chamfer.
[0012] As a preferred embodiment, the first and second connecting seats are also provided with anti-slip textures.
[0013] As a preferred embodiment, the connecting sleeve is also provided with an anti-detachment protrusion ring.
[0014] As a preferred embodiment, the connecting sleeve is also equipped with a locking mechanism, which includes a locking clamp fitted on the connecting sleeve. Both ends of the locking clamp are provided with locking seats, and a locking bolt is inserted between the locking seats.
[0015] Compared with existing technologies, the advantages of this utility model are as follows: By aligning the connecting hook on the first connecting seat with the connecting hook groove on the second connecting seat, and then inserting the connecting hook into the corresponding connecting hook groove, the first connecting seat is rotated, causing the protrusion at the end of the connecting hook to insert into the slot provided in the connecting hook groove, thus achieving the connection between adjacent fire hoses. The operation is simple, effectively improving the connection speed and better meeting usage requirements. The fixing mechanism effectively prevents the first connecting seat from rotating relative to the second connecting seat, thereby improving the reliability of the connection. This utility model has a reasonable structure and can achieve the connection of adjacent fire hoses without the need for threaded connections, effectively improving the connection speed and better meeting usage requirements. Attached Figure Description
[0016] Figure 1 A schematic diagram of the overall three-dimensional structure of a fire hose connector;
[0017] Figure 2This is a top view schematic diagram of a fire hose connector;
[0018] Figure 3 A type of fire hose connector Figure 2 Schematic diagram of the cross-sectional structure at point AA;
[0019] Figure 4 A three-dimensional structural diagram of a connection seat for a fire hose connector;
[0020] Figure 5 A three-dimensional structural diagram of the connecting seat at two positions of a fire hose connector;
[0021] Figure 6 This is a three-dimensional structural diagram of a fixing mechanism for a fire hose connector.
[0022] In the diagram: 1. Connecting seat one; 11. Connecting sleeve; 12. Connecting hook; 13. Anti-detachment protrusion ring; 14. Anti-slip texture; 15. Sealing ring one; 16. Limiting groove; 2. Connecting seat two; 21. Connecting hook groove; 22. Sealing ring two; 3. Fixing mechanism; 31. Fixing seat; 32. Fixing spring; 33. Fixing insert; 34. Fixing slide; 341. Fixing lever; 35. Fixing slot; 36. Fixing cover plate; 37. Actuating groove; 4. Locking mechanism; 41. Locking clamp; 42. Locking seat; 43. Locking bolt. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.
[0024] Example: Please refer to Figures 1-6 A fire hose connector includes: a connecting seat 1 and a connecting seat 2, wherein connecting sleeves 11 for fitting fire hoses are installed on opposite sides of the connecting seat 1 and the connecting seat 2, multiple sets of connecting hooks 12 are fixed at the end of the connecting seat 1 near the connecting seat 2, and a corresponding number of connecting hook grooves 21 are distributed at the corresponding position at the end of the connecting seat 2 near the connecting seat 1, wherein the connecting hooks 12 are engaged in the connecting hook grooves 21; a fixing mechanism 3 is installed between the connecting seat 1 and the connecting seat 2 to prevent the connecting seat 1 from rotating relative to the connecting seat 2. In this embodiment, the cross-section of the connecting hook grooves 21 and the connecting hooks 12 is L-shaped, and a sealing ring 15 is provided at the end of the connecting seat 1 near the connecting seat 2, and a sealing ring 2 is provided at the end of the connecting seat 2 near the connecting seat 1.
[0025] The working principle of this utility model is as follows: During installation, the connecting hook 12 on the connecting seat 1 is aligned with the connecting hook groove 21 on the connecting seat 2. Then, the connecting hook 12 is inserted into the corresponding connecting hook groove 21. Next, the connecting seat 1 is rotated so that the protrusion at the end of the connecting hook 12 is inserted into the slot provided in the connecting hook groove 21, thereby realizing the connection between adjacent fire hoses. The operation is simple and can effectively improve the connection speed, thus better meeting the usage requirements. By setting the fixing mechanism 3, the rotation of the connecting seat 1 relative to the connecting seat 2 can be effectively prevented, thereby improving the reliability of the connection.
[0026] As a further embodiment, the connecting seat 2 is provided with multiple sets of mounting slots, and the connecting seat 1 is provided with a limiting slot 16 at the corresponding position. The fixing mechanism 3 includes a fixing seat 31 rotatably installed in the mounting slot. The fixing seat 31 is provided with a sliding groove, and a fixing slide 34 is slidably installed in the sliding groove. A fixing insert 33 extends from the side of the fixing slide 34 near the connecting seat 1. A fixing slot 35 is also provided in the limiting groove 16, and the fixing insert 33 is inserted into the fixing slot 35. A fixing spring 32 is also installed in the sliding groove. The two ends of the fixing spring 32 abut against the fixing slide 34 and the corresponding side of the sliding groove, respectively. In this embodiment, a fixing cover plate 36 is also installed on the fixing seat 31 at the position corresponding to the sliding groove. A fixing lever 341 is also installed on the fixing slide 34. A lever groove 37 is provided on the fixing cover plate 36 at the position corresponding to the fixing lever 341. The fixing lever 341 passes through the lever groove 37. The end of the fixing insert 33 is provided with a chamfer. By setting a chamfer, it is easier for the fixing block 33 to be inserted into the fixing slot 35.
[0027] The working principle of the fixing mechanism 3 is as follows: After the connection between the first connecting seat 1 and the second connecting seat 2 is completed, the fixing block 341 is installed, so that the fixing insert 33 is put into the slide groove. At the same time, the fixing seat 31 is rotated, so that the end of the fixing seat 31 is inserted into the limiting groove 16. Then, the fixing block 341 is released. At this time, the fixing spring 32 returns to its original state, which will push the fixing insert 33 to move, so that the fixing insert 33 is inserted into the fixing slot 35, thus completing the fixing work. This can prevent the first connecting seat 1 from rotating relative to the second connecting seat 2 and improve the connection effect between the first connecting seat 1 and the second connecting seat 2.
[0028] To facilitate the rotation of connecting seat 1 and connecting seat 2, anti-slip texture 14 is also provided on connecting seat 1 and connecting seat 2.
[0029] To improve the fixing effect of the fire hose, the connecting sleeve 11 is also provided with an anti-detachment protrusion ring 13, and the connecting sleeve 11 is also equipped with a locking mechanism 4. The locking mechanism 4 includes a locking clamp 41 fitted on the connecting sleeve 11. Both ends of the locking clamp 41 are provided with locking seats 42, and a locking bolt 43 is passed through the locking seats 42.
[0030] When securing the fire hose, place the locking clamp on the outside of the fire hose, then put the fire hose onto the connecting sleeve 11. Next, rotate the locking nut on the locking bolt 43 to bring the locking seats 42 closer together, thereby reducing the size of the locking clamp 41 and securing the fire hose to the connecting sleeve 11.
[0031] In this utility model, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various components or elements of this utility model and do not specifically refer to any component or element in this utility model. They should not be construed as limiting this utility model.
Claims
1. A fire hose connector, characterized in that, include: Connecting seat one (1) and connecting seat two (2), both of which are equipped with connecting sleeves (11) for fitting fire hoses on opposite sides. Connecting seat one (1) is fixed with multiple sets of connecting hooks (12) at one end near connecting seat two (2). Connecting seat two (2) is provided with a corresponding number of connecting hook grooves (21) at one end near connecting seat one (1). The connecting hooks (12) are fitted into the connecting hook grooves (21). The fixing mechanism (3) is installed between the connecting seat one (1) and the connecting seat two (2) to prevent the connecting seat one (1) from rotating relative to the connecting seat two (2).
2. A fire hose connector according to claim 1, characterized in that: The cross-sections of the connecting hook groove (21) and the connecting hook (12) are both L-shaped.
3. A fire hose connector according to claim 2, characterized in that: The connecting seat 2 (2) is also provided with multiple sets of mounting slots. The connecting seat 1 (1) is provided with a limiting slot (16) at the corresponding position. The fixing mechanism (3) includes a fixing seat (31) rotatably installed in the mounting slot. The fixing seat (31) is provided with a sliding groove. A fixing slide (34) is slidably installed in the sliding groove. A fixing insert (33) extends from the side of the fixing slide (34) near the connecting seat 1 (1). A fixing slot (35) is also provided in the limiting groove (16). The fixing insert (33) is inserted into the fixing slot (35). A fixing spring (32) is also installed in the sliding groove. The two ends of the fixing spring (32) abut against the fixing slide (34) and the corresponding side of the sliding groove, respectively.
4. A fire hose connector according to claim 3, characterized in that: A fixed cover plate (36) is also installed on the fixed seat (31) at the position corresponding to the slide groove. A fixed lever (341) is also installed on the fixed slide (34). A lever groove (37) is provided on the fixed cover plate (36) at the position corresponding to the fixed lever (341). The fixed lever (341) passes through the lever groove (37).
5. A fire hose connector according to claim 4, characterized in that: The fixed insert (33) has a chamfer at its end.
6. A fire hose connector according to claim 5, characterized in that: The connecting seat one (1) and connecting seat two (2) are also provided with anti-slip texture (14).
7. A fire hose connector according to claim 6, characterized in that: The connecting sleeve (11) is also provided with an anti-detachment protrusion ring (13).
8. A fire hose connector according to claim 7, characterized in that: The connecting sleeve (11) is also equipped with a locking mechanism (4), which includes a locking clamp (41) fitted on the connecting sleeve (11). Both ends of the locking clamp (41) are provided with locking seats (42), and locking bolts (43) are passed between the locking seats (42).