Quick connect buckle type fire hose coupling

Abstract

The utility model provides a kind of quick connection buckle type fire hose connector, it is related to fire hose technical field, including lock block, the outside of lock block is connected with lock shell, the end of lock block is connected with spring, the upside of lock block is connected with unlocking plate, by the fixed buckle outside daughter connector with the entrance end of the card slot inside female connector, first daughter connector is inserted into female connector, in clockwise rotating daughter connector, make fixed buckle move along the L type groove of card slot, when fixed buckle moves, by extruding the wedge surface of lock block, so that lock block is contracted by spring, when fixed buckle continues to move to the end of card slot, fixed buckle no longer extrudes lock block, lock block is re-extended under the action of spring, while the protrusion of lock shell both sides is positioned to lock block, rectangular surface of lock block is contacted with fixed buckle, fixed buckle is clamped in the end of card slot, ensure that daughter connector cannot rotate, to ensure that daughter connector is connected stably with female connector.

Description

Technical Field

[0001] This utility model relates to the field of fire hose technology, and in particular to a quick-connect snap-on fire hose connector. Background Technology

[0002] Fire hose couplings are key components connecting fire hoses, fire pumps, fire hydrants, and water spraying equipment. Their core function is to ensure a quick, secure, and sealed connection of the fire-fighting water supply line. Common interface types, such as internal snap-fit ​​and clip-on types, are mostly made of lightweight and corrosion-resistant materials such as aluminum alloy. Through a unique groove and sealing ring design, they achieve "one-plug-and-lock," which can withstand high water pressure to prevent detachment and effectively prevent water leakage. This standardized and efficient connection design is crucial for ensuring uninterrupted water supply at the fire scene and improving the speed of fire fighting and rescue.

[0003] A search revealed that the document with publication number "CN219432719U" states that "this utility model relates to the field of fire hose technology, specifically a quick-connect fire hose connector, including a base, a support rod installed on the top of the base, and a connecting pipe fixedly connected to the top of the support rod. A connecting rod is inserted into the outer wall of the connecting pipe, and a double-ended threaded rod is installed on the outer periphery of the connecting rod away from the base. A nut is threaded onto the outer side of the double-ended threaded rod. A sleeve is sleeved inside the connecting pipe, and a circular groove is formed on the outer surface of the sleeve." In use, by setting up the sleeve and tightening strap, and the circular groove matching the sleeve surface and tightening strap, the fire hose can be pressed against the outer surface of the sleeve. Simultaneously, the connecting rod and nut on the outer side of the connecting pipe further press the fire hose, making it tightly fit against the outside of the sleeve. Furthermore, the two sets of gaskets on the outer side of the sleeve near the connecting pipe and the inner side of the connecting pipe enhance the sealing at the connection between the sleeve and the connecting pipe.

[0004] However, traditional fire hose connectors typically achieve a fixed connection by rotating and snapping together. When water flows through the fire hose, the high water pressure and the constant movement of the fire hose during firefighting can easily cause the fire hose connector to rotate, leading to a loose connection and affecting fire water supply. Furthermore, fire hose connectors require quick connection, but traditional fire hose connectors require observing the interface clips to align the connector, making it difficult to align and thus affecting the connection speed and firefighting efficiency.

[0005] Therefore, we provide a quick-connect snap-on fire hose connector to solve the above problems. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides a quick-connect snap-on fire hose connector, which aims to solve the problems mentioned above.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A quick-connect snap-on fire hose connector includes a sub-connector with a fixing buckle installed on the outer right end of the sub-connector. A rotating wheel is connected to the middle of the outer side of the sub-connector, and a buckle indicator block is installed on the outer side of the rotating wheel. A female connector is provided on the right side of the sub-connector, and a groove is provided on the inner side of the female connector. A locking component is provided at one end of the groove. The locking component includes a locking block installed at one end of the groove, a lock housing connected to the outer side of the locking block, a spring connected to the end of the locking block, and an unlocking plate connected to the upper side of the locking block. An entry indicator block is provided on the outer side of the female connector, a locking indicator block is provided on one side of the entry indicator block, and a protruding wheel is provided on the right side of the locking indicator block. An inner tube of the female connector is connected to the right side of the female connector.

[0008] As a further description of the above technical solution: The rotating wheel and the sub-joint are welded together, and the outer surface of the rotating wheel is provided with rubber stripes.

[0009] As a further description of the above technical solution: The fixing buckle and the sub-connector are welded together, and the slot is an L-shaped slot that fits into the fixing buckle.

[0010] As a further description of the above technical solution: The locking block has a wedge-shaped structure, and the locking block and the lock housing are connected by a spring to form an elastic telescopic structure.

[0011] As a further description of the above technical solution: The unlocking plate and the lock block are welded together. A rectangular groove is provided on the outer side of the protruding wheel, and the unlocking plate extends out from the rectangular groove on the outer side of the protruding wheel.

[0012] As a further description of the above technical solution: The buckle indicator block has a rectangular structure with a circular recess in the middle. The buckle indicator block corresponds to the position of the fixed buckle. The insertion indicator block has the same shape as the buckle indicator block and corresponds to the entrance end of the slot. The locking indicator block has a rectangular structure with a rectangular recess in the middle and corresponds to the end of the slot.

[0013] As a further description of the above technical solution: The interface on the inner right end of the sub-connector is a concave structure, and the left interface of the inner tube of the female connector has a protruding structure that fits into it. A rubber ring is provided on the outer surface of the protruding structure of the inner tube of the female connector.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting a locking component, rotating the rotating wheel drives the sub-connector to rotate, causing the fixing buckle on the sub-connector to move along the arc-shaped track on the slot to the end of the slot, and finally be locked by the locking block. Simultaneously, the rubber stripes on the outer surface of the rotating wheel increase the friction between the rotating wheel and the hand, facilitating rotational force during connection. During connection, align the fixing buckle on the outside of the sub-connector with the entrance end of the slot on the inside of the female connector, insert the sub-connector into the female connector, and then rotate the sub-connector clockwise, causing the fixing buckle to move along the L-shaped groove of the slot. Finally, the fixing buckle moves to the end of the slot and is locked by the locking block, ensuring a stable connection between the sub-connector and the female connector. During the process of the fixing buckle on the sub-connector moving along the arc-shaped track on the slot, the fixing buckle... When in motion, the wedge-shaped surface of the locking block is pressed, causing the locking block to retract via the spring. As the fixing buckle continues to move to the end of the slot, the fixing buckle no longer presses the locking block, and the locking block extends again under the action of the spring. At the same time, the protrusions on both sides of the lock case limit the locking block. At this point, the rectangular surface of the locking block contacts the fixing buckle, locking the fixing buckle at the end of the slot, ensuring that the sub-connector will not rotate, thus ensuring a stable connection between the sub-connector and the female connector. When disconnecting, the unlocking plate on the outside of the protruding wheel is pulled, causing the locking block to compress the spring and retract. When it retracts to a certain extent, the locking block no longer locks the fixing buckle. At the same time, the rotating wheel is rotated counterclockwise, causing the fixing buckle on the outside of the sub-connector to rotate. After rotating to a certain extent, the sub-connector is pulled out, thus disconnecting the sub-connector from the female connector.

[0015] 2. By setting a snap-fit ​​indicator block, an insertion indicator block, and a locking indicator block, during connection, aligning the snap-fit ​​indicator block and the insertion indicator block allows the fixing snap to quickly align with the slot for connection. After connection, the snap-fit ​​indicator block will align with the locking indicator block. You can judge whether the connection is successful by observing whether the snap-fit ​​indicator block and the locking indicator block are aligned. At the same time, the snap-fit ​​indicator block and the insertion indicator block have the same shape, which facilitates quick alignment. After connection, the concave structure on the inner right end of the sub-connector fits into the protrusion on the left side of the inner tube of the female connector, and the rubber ring on the left interface surface of the inner tube of the female connector can enhance the sealing performance and ensure the connection is sealed. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the female connector of this utility model; Figure 3 This is a schematic diagram showing the disassembled structure of the male connector, female connector, and inner tube of the female connector according to this utility model. Figure 4 This is a schematic diagram of the mating structure of the locking component of this utility model; Figure 5 This is a schematic diagram of the mating structure of the male connector and female connector of this utility model.

[0017] The following are the labels in the diagram: 1. Sub-connector; 2. Fixed buckle; 3. Rotating wheel; 4. Buckle indicator block; 5. Female connector; 6. Slot; 7. Locking assembly; 701. Lock block; 702. Lock housing; 703. Spring; 704. Unlocking plate; 8. Position indicator block; 9. Locking indicator block; 10. Raised wheel; 11. Inner tube of female connector. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-5 As shown, this utility model provides a technical solution: a quick-connect snap-on fire hose connector, including a sub-connector 1, a fixing buckle 2 installed on the outer right end of the sub-connector 1, a rotating wheel 3 connected to the middle of the outer side of the sub-connector 1, a buckle indicator block 4 installed on the outer side of the rotating wheel 3, a female connector 5 provided on the right side of the sub-connector 1, a slot 6 provided on the inner side of the female connector 5, a locking component 7 provided at one end of the slot 6, the locking component 7 including a locking block 701 installed at one end of the slot 6, a lock shell 702 connected to the outer side of the locking block 701, a spring 703 connected to the end of the locking block 701, an unlocking plate 704 connected to the upper side of the locking block 701, an entry indicator block 8 provided on the outer side of the female connector 5, a locking indicator block 9 provided on one side of the entry indicator block 8, a protruding wheel 10 provided on the right side of the locking indicator block 9, and a female connector inner tube 11 connected to the right side of the female connector 5.

[0020] Furthermore, the rotating wheel 3 and the sub-connector 1 are welded together. The outer surface of the rotating wheel 3 is provided with rubber stripes. After the sub-connector 1 is inserted into the female connector 5, the rotating wheel 3 is rotated to drive the sub-connector 1 to rotate, so that the fixing buckle 2 on the sub-connector 1 moves along the arc track on the slot 6 to the end of the slot 6 and is finally locked by the locking block 701. At the same time, the rubber stripes on the outer surface of the rotating wheel 3 can increase the friction between the rotating wheel 3 and the hand, which facilitates rotational force during the connection process.

[0021] Furthermore, the fixing buckle 2 and the sub-connector 1 are welded together, and the slot 6 is an L-shaped slot. The slot 6 and the fixing buckle 2 are fitted together. During connection, by aligning the fixing buckle 2 on the outside of the sub-connector 1 with the entrance end of the slot 6 on the inside of the female connector 5, the sub-connector 1 is first inserted into the female connector 5. Then, the sub-connector 1 is rotated clockwise to make the fixing buckle 2 move along the L-shaped slot of the slot 6. Finally, the fixing buckle 2 moves to the end of the slot 6 and is locked by the locking block 701, so that the sub-connector 1 and the female connector 5 are stably connected.

[0022] Furthermore, the locking block 701 has a wedge-shaped structure. The locking block 701 and the lock housing 702 form an elastic telescopic structure through the spring 703. During the process of the fixing buckle 2 on the sub-connector 1 moving along the arc track on the slot 6 to the end of the slot 6 by rotation, the fixing buckle 2 presses the wedge-shaped surface of the locking block 701, causing the locking block 701 to retract through the spring 703. When the fixing buckle 2 continues to move to the end of the slot 6, the fixing buckle 2 no longer presses the locking block 701, and the locking block 701 extends again under the action of the spring 703. At the same time, the protrusions on both sides of the lock housing 702 limit the locking block 701. At this time, the rectangular surface of the locking block 701 contacts the fixing buckle 2, locking the fixing buckle 2 at the end of the slot 6, ensuring that the sub-connector 1 will not rotate, thereby ensuring the stable connection between the sub-connector 1 and the female connector 5.

[0023] Furthermore, the unlocking plate 704 and the locking block 701 are welded together. A rectangular groove is provided on the outer side of the protruding wheel 10. The unlocking plate 704 extends out from the rectangular groove on the outer side of the protruding wheel 10. When the connection is disengaged, by pulling the unlocking plate 704 on the outer side of the protruding wheel 10, the locking block 701 is driven to compress the spring 703 and retract. When it retracts to a certain extent, the locking block 701 no longer jams the fixing buckle 2. At the same time, by rotating the rotating wheel 3 counterclockwise, the fixing buckle 2 on the outer side of the sub-connector 1 is driven to rotate. After rotating to a certain extent, the sub-connector 1 is pulled out, so that the connection between the sub-connector 1 and the female connector 5 is disengaged.

[0024] Furthermore, the latching indicator block 4 has a rectangular structure with a circular recess in the middle. The latching indicator block 4 corresponds to the position of the fixed latch 2. The insertion indicator block 8 has the same shape as the latching indicator block 4 and corresponds to the entrance end of the slot 6. The locking indicator block 9 has a rectangular structure with a rectangular recess in the middle and corresponds to the end of the slot 6. By setting the latching indicator block 4, the insertion indicator block 8, and the locking indicator block 9, during connection, by aligning the latching indicator block 4 and the insertion indicator block 8, the fixed latch 2 can be quickly aligned with the slot 6 for connection. After connection, the latching indicator block 4 will be aligned with the locking indicator block 9. The connection can be determined by observing whether the latching indicator block 4 and the locking indicator block 9 are aligned. At the same time, the latching indicator block 4 and the insertion indicator block 8 have the same shape, which facilitates quick alignment.

[0025] Furthermore, the inner right end of the sub-connector 1 has a concave structure, and the left side of the inner tube 11 of the female connector has a protruding structure that fits into it. The outer surface of the protruding structure of the inner tube 11 of the female connector is provided with a rubber ring. After connection, the concave structure on the inner right end of the sub-connector 1 fits into the protruding structure on the left side of the inner tube 11 of the female connector, and the rubber ring on the surface of the left side of the inner tube 11 of the female connector can enhance the sealing performance and ensure the connection is sealed.

[0026] Working principle: In use, align the buckle indicator block 4 with the positioning indicator block 8, so that the fixing buckle 2 on the outside of the sub-connector 1 is aligned with the entrance end of the slot 6 on the inside of the female connector 5. First, insert the sub-connector 1 into the female connector 5, and then rotate the rotating wheel 3 clockwise to move the fixing buckle 2 on the sub-connector 1 along the arc track on the slot 6 to the end of the slot 6. At the same time, the rubber stripes on the outer surface of the rotating wheel 3 increase the friction between the rotating wheel 3 and the hand, which facilitates rotational force during connection. Meanwhile, when the fixing buckle 2 moves, it presses the wedge-shaped surface of the locking block 701, causing the locking block 701 to retract through the spring 703. When the fixing buckle 2 continues to move to the end of the slot 6, the fixing buckle 2 no longer presses the locking block 701, and the locking block 701 re-extends under the action of the spring 703. At the same time, the protrusions on both sides of the lock shell 702 limit the locking block 701. At this time, the rectangular surface of the locking block 701 and the fixing buckle are aligned. 2. Contact, the fixing buckle 2 is locked at the end of the slot 6 to ensure that the sub-connector 1 will not rotate, thus ensuring a stable connection between the sub-connector 1 and the female connector 5. At the same time, the buckle indicator block 4 will align with the locking indicator block 9. After reconnection, the concave structure on the inner right end of the sub-connector 1 and the protrusion on the left side of the inner tube 11 of the female connector will fit together, and the rubber ring on the left interface surface of the inner tube 11 of the female connector will enhance the sealing performance and ensure the connection is sealed. When the connection is released, by pulling the unlocking plate 704 on the outside of the protrusion wheel 10, the locking block 701 will compress the spring 703 to retract. When it retracts to a certain extent, the locking block 701 will no longer lock the fixing buckle 2. At the same time, by rotating the rotating wheel 3 counterclockwise, the fixing buckle 2 on the outside of the sub-connector 1 will rotate. After rotating to a certain extent, the sub-connector 1 will be pulled out, thus releasing the connection between the sub-connector 1 and the female connector 5. This completes the use process of a quick-connect buckle fire hose connector.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick connect buckle type fire hose coupling comprising a sub-coupling (1), characterized in that: A fixing buckle (2) is installed on the right side of the outer side of the sub-connector (1). A rotating wheel (3) is connected to the middle of the outer side of the sub-connector (1). A buckle indicator block (4) is installed on the outer side of the rotating wheel (3). A female connector (5) is provided on the right side of the sub-connector (1). A slot (6) is provided on the inner side of the female connector (5). A locking component (7) is provided at one end of the slot (6). The locking component (7) includes a locking block (701) installed at one end of the slot (6). A lock housing (702) is connected to the outside of the lock block (701), a spring (703) is connected to the end of the lock block (701), an unlocking plate (704) is connected to the upper side of the lock block (701), an entry indicator block (8) is provided on the outside of the female connector (5), a locking indicator block (9) is provided on one side of the entry indicator block (8), a protruding wheel (10) is provided on the right side of the locking indicator block (9), and a female connector inner tube (11) is connected to the right side of the female connector (5).

2. A quick-connect snap-on fire hose connector according to claim 1, characterized in that, The rotating wheel (3) is welded to the sub-joint (1), and the outer surface of the rotating wheel (3) is provided with rubber stripes.

3. A quick-connect snap-on fire hose connector according to claim 1, characterized in that, The fixing buckle (2) and the sub-connector (1) are welded together. The slot (6) is an L-shaped slot and is fitted with the fixing buckle (2).

4. A quick-connect snap-on fire hose connector according to claim 1, characterized in that, The locking block (701) has a wedge-shaped structure, and the locking block (701) and the lock shell (702) are connected by a spring (703) to form an elastic telescopic structure.

5. A quick-connect snap-on fire hose connector according to claim 1, characterized in that, The unlocking plate (704) and the lock block (701) are welded together. A rectangular groove is provided on the outer side of the protruding wheel (10), and the unlocking plate (704) extends out from the rectangular groove on the outer side of the protruding wheel (10).

6. A quick-connect snap-on fire hose connector according to claim 1, characterized in that, The buckle indicator block (4) has a rectangular structure and a circular recess in the middle. The buckle indicator block (4) corresponds to the position of the fixed buckle (2). The insertion indicator block (8) has the same shape as the buckle indicator block (4). The insertion indicator block (8) corresponds to the entrance end of the slot (6). The locking indicator block (9) has a rectangular structure and a rectangular recess in the middle. The locking indicator block (9) corresponds to the end position of the slot (6).

7. A quick-connect snap-on fire hose connector according to claim 1, characterized in that, The interface on the right side of the inner side of the sub-connector (1) is a concave structure, and the left side interface of the inner tube (11) of the female connector has a protruding structure that fits into it. A rubber ring is provided on the outer surface of the protruding structure of the inner tube (11) of the female connector.

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