A fire hose coupling designed to prevent detachment from falling water.
The design of the clamping component solves the problem of fire hose couplings easily loosening under high-pressure water flow, achieving stable connection and rapid assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN ZHONGXING FIRE EQUIP CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-08-04
AI Technical Summary
Existing fire hose couplings are prone to loosening and separation under high-pressure water flow, and are inconvenient to disassemble and assemble.
The device employs a clamping assembly, including an insertion groove, an annular groove, a locking groove, a flip rod, and a locking rod, which are connected by a spring hinge. The locking rod automatically engages with the locking groove during rotation, providing an anti-fall-off effect. Guide bars and universal ball bearings enhance stability and ease of operation.
It achieves a stable connection under high-pressure water flow, preventing loosening, and features high assembly efficiency and simple operation.
Smart Images
Figure CN224585242U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water gun coupling technology, and more specifically to a fire-fighting anti-fall-off water gun coupling. Background Technology
[0002] Fire hose couplings are an important accessory in fire-fighting equipment. They are mainly used to connect fire hoses and fire nozzles, or to connect two sections of fire hoses. Their function is to ensure that water can be smoothly transmitted from the water source to the place where fire needs to be extinguished, while ensuring that the interface will not leak or fall off under high-pressure water flow. The existing water gun couplings are generally connected by rotating two sets of fasteners. The structure of the fastener is shown in "Application No.: CN201621114131.3, A New Type of Fire Gun Coupling". When using it, it is necessary to align and connect the two first, and then rotate to connect them securely. However, in actual use, it is easy to loosen and separate due to external rotational force. As shown in the existing "Application No.: CN202223051508.3, a connector for fire hydrant pipes", although the connection stability can be further improved by setting a fixing component, the structure requires operation for both assembly and disassembly, which is quite troublesome. Utility Model Content
[0003] The purpose of this utility model is to provide a fire-fighting anti-fall-off water gun connector in order to solve the above-mentioned technical problems.
[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution: This utility model proposes a fire hose reel for preventing it from falling off, including a lower reel, an upper reel connecting the lower reel, and a locking assembly disposed between the lower reel and the upper reel; The clamping assembly includes an inlet groove, an annular groove, and a locking groove on the upper buckle, a flip rod that is rotatably connected to the lower buckle via a spring hinge, and a locking rod fixed on the flip rod. When the lower and upper latches rotate relative to each other, the locking rod moves within the groove and the annular groove, and the locking rod is locked in the groove; the flipping rod does not extend into the groove.
[0005] As a preferred embodiment of this utility model, the slot gradually expands from the inside to the outside.
[0006] As a preferred technical solution of this utility model, the clamping assembly further includes a guide bar fixed on the upper buckle, the guide bar being close to the slot to prevent the flip rod from moving towards the slot.
[0007] As a preferred technical solution of this utility model, the thickness of the guide bar gradually increases from the groove to the slot, and the guide bar is arc-shaped. The outer side of the guide bar is in contact with the flip rod, and the minimum thickness of the guide bar is less than the distance between the flip rod and the outer side of the upper buckle.
[0008] As a preferred technical solution of this utility model, the clamping assembly further includes universal balls fixed on the flip rod and ball grooves provided on the outside of the guide bar, with the universal balls fitting and moving inside the ball grooves.
[0009] As a preferred technical solution of this utility model, a soft wear-resistant layer is attached and fixed in the ball groove and is attached and movable to the outside of the universal ball.
[0010] The beneficial effects of this utility model are as follows: The locking rod moves within the slot. As the lower and upper latches rotate relative to each other, the locking rod moves synchronously around the annular groove until it is above the slot. Then, under the elastic action of the spring hinge, the locking rod is inserted into the slot for stability, providing an anti-fall-off effect. The lower and upper latches are also assembled synchronously, with good synchronization, which can speed up the assembly efficiency. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 A top-view structural diagram.
[0012] Reference numerals: Lower latch-1, Upper latch-2, Clamping assembly-3, Insert groove-31, Ring groove-32, Clamping groove-33, Flip rod-34, Clamping rod-35, Guide bar-36, Universal ball bearing-37, Ball groove-38. Detailed Implementation Example 1:
[0013] like Figures 1-2 As shown in the figure, this embodiment proposes a fire hose reel for preventing it from falling off, including a lower reel 1, an upper reel 2 connecting the lower reel 1, and a clamping assembly 3 disposed between the lower reel 1 and the upper reel 2; the clamping assembly 3 further strengthens and stabilizes the lower reel 1 and the upper reel 2 after they are rotated together. The specific structure of clamping component 3 is shown below: The clamping assembly 3 includes an inlet groove 31, an annular groove 32, and a locking groove 33 on the upper buckle 2, a flip rod 34 rotatably connected to the lower buckle 1 via a spring hinge, and a locking rod 35 fixed on the flip rod 34. The inlet groove 31 is set on the lower side of the outer periphery of the upper buckle 2, and the inlet groove 31 extends out of the bottom end of the upper buckle 2. The inlet groove 31 is strip-shaped and faces up and down. The annular groove 32 is set in an arc shape around the outer periphery of the upper buckle 2, and the top end of the inlet groove 31 is connected to one end of the annular groove 32. The locking groove 33 is located at the other end of the annular groove 32. The rod end of the flip rod 34 faces up and down, and the lower end of the flip rod 34 is rotatably connected to the outer side of the lower buckle 1 via a spring hinge. The locking rod 35 is fixed at the rear end of the upper side. When the lower buckle 1 and the upper buckle 2 are rotated relative to each other, the locking rod 35 moves within the groove 31 and the annular groove 32, and the locking rod 35 is inserted into the locking groove 33 and locked; the flip rod 34 does not extend into the groove 31. The structure of the lower buckle 1 and the upper buckle 2 corresponds to the "second buckle ring and first buckle ring" in the background technology "CN202223051508.3", and the lower buckle 1 and the upper buckle 2 are respectively provided with the same vertical block, horizontal block and insertion groove as in "CN202223051508.3"; When the horizontal block connecting the lower buckle 1 and the upper buckle 2 is inserted into the insertion slot, the locking rod 35 is also simultaneously inserted into the slot 31. When the lower buckle 1 and the upper buckle 2 rotate relative to each other, the locking rod 35 moves synchronously around in the annular groove 32 until the locking rod 35 is above the slot 33. Under the elastic action of the spring hinge, the locking rod 35 is inserted into the slot 33 for stability to provide an anti-fall-off effect. The lower buckle 1 and the upper buckle 2 are also assembled synchronously, with good synchronization, which can speed up the assembly efficiency.
[0014] The slot 33 expands gradually from the inside to the outside, and the rod 35 can also be expanded to fit the inner wall of the slot 33, resulting in a strong and stable fit. Example 2:
[0015] like Figures 1-2 As shown, the difference between this embodiment and Embodiment 1 is that the clamping assembly 3 further includes a guide strip 36 fixed to the upper buckle 2. The guide strip 36 is close to the slot 33 to prevent the flip rod 34 from moving towards the groove 31; as shown Figure 2 As shown, the initial clockwise end of the guide bar 36 can prevent the flip rod 34 from shifting clockwise when the lever 35 is inserted into the slot 33, thereby improving the stability of the position of the flip rod 34.
[0016] The thickness of the guide bar 36 gradually increases from the groove 31 to the slot 33, and the guide bar 36 is arc-shaped. The outer side of the guide bar 36 is in contact with the flip rod 34 and moves. The minimum thickness of the guide bar 36 is less than the distance between the flip rod 34 and the outer side of the upper buckle 2. In this way, when the flip rod 34 moves counterclockwise along the annular groove 32, the flip rod 34 can slide directly against the guide bar 36 under the elastic action of the spring hinge until it moves to the end of the guide bar 36 and stops when the locking rod 35 is at the front end of the slot 33, which facilitates operation. Example 3:
[0017] like Figures 1-2 As shown, the difference between this and Embodiment 1 is that the clamping assembly 3 further includes a universal ball bearing 37 fixed on the flip rod 34 and a ball groove 38 provided on the outside of the guide bar 36. The universal ball bearing 37 is in contact with and moves inside the ball groove 38. According to the above, an annular ball groove 38 is provided on the periphery of the guide bar 36, and the universal ball bearing 37 is fixed at the rear end of the flip rod 34. When the flip rod 34 moves, the universal ball bearing 37 rolls against the ball groove 38, which can reduce resistance and make the operation simpler.
[0018] The ball groove 38 has a soft wear-resistant layer attached and fixed inside, which is in contact with the outside of the universal ball 37; the soft wear-resistant layer is made of rubber, and this material serves as the contact surface to support the movement of the universal ball 37.
[0019] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0020] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A fire hose reel for preventing water gun from falling off, comprising a lower reel (1), an upper reel (2) connecting the lower reel (1), and a locking assembly (3) disposed between the lower reel (1) and the upper reel (2); Its features are, The clamping assembly (3) includes an inlet groove (31), an annular groove (32) and a locking groove (33) provided on the upper buckle (2), a flip rod (34) rotatably connected to the lower buckle (1) via a spring hinge, and a locking rod (35) fixed on the flip rod (34). When the lower buckle (1) and the upper buckle (2) are connected and rotate relative to each other, the locking rod (35) moves in the groove (31) and the ring groove (32), and the locking rod (35) is inserted into the locking groove (33) and locked; the flipping rod (34) does not extend into the groove (31).
2. The fire-fighting anti-drop-off water gun connector according to claim 1, characterized in that, The slot (33) expands gradually from the inside out.
3. A fire hose coupling for preventing detachment of a water gun according to claim 1, characterized in that, The locking assembly (3) also includes a guide bar (36) fixed on the upper buckle (2), the guide bar (36) being close to the slot (33) to prevent the flip bar (34) from moving toward the slot (31).
4. A fire hose coupling for preventing water jetting from falling off, as described in claim 3, is characterized in that... The thickness of the guide bar (36) gradually increases from the groove (31) to the slot (33), and the guide bar (36) is arc-shaped. The outer side of the guide bar (36) is in contact with the flip rod (34) and the minimum thickness of the guide bar (36) is less than the distance between the flip rod (34) and the outer side of the upper buckle (2).
5. A fire hose reel connector for preventing detachment from falling off, as described in claim 4, is characterized in that... The clamping assembly (3) also includes universal ball bearings (37) fixed on the flip bar (34) and ball grooves (38) located on the outside of the guide bar (36), with the universal ball bearings (37) fitting and moving inside the ball grooves (38).
6. A fire hose reel connector for preventing detachment from falling off, as described in claim 5, is characterized in that... A soft wear-resistant layer is attached and fixed inside the ball groove (38) and it is attached and movable to the outside of the universal ball (37).