Anti-falling universal rapid water hose connector

Abstract

The utility model relates to the technical field of fire hose connectors, in particular to an anti-falling universal rapid hose connector which comprises two connector single bodies, and the two connector single bodies are the same in structure. During butt joint, the two interface monomers are symmetrically arranged; each connector single body comprises a water hose fixing assembly, a self-adjusting reset assembly and a butt joint assembly. The self-adjusting reset assembly comprises a first rotatable inner connector, a plane bearing and a bearing seat, one end of the first rotatable inner connector is connected with the water hose fixing assembly, the other end of the first rotatable inner connector is connected with the butt joint assembly through the plane bearing and the bearing seat, and the first rotatable inner connector and the butt joint assembly can freely rotate through the plane bearing. The connector is integrated with a male connector and a female connector, is simple in structure and convenient to operate, avoids the situation that the male and female ends of the connector are taken mistakenly to affect butt joint efficiency, and saves production cost; compared with an existing male and female integrated connector, the self-adjusting reset assembly allows relative rotation between the connector assemblies to counteract additional torque generated at the connector when a water hose is reeled and wound, and the situations that the connector bears the additional torque and is tripped and damaged, the knotting water blocking phenomenon occurs, and even tripped and hurt people are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire hose interface technical field especially, relates to a kind of quick water hose interface of preventing from falling off general purpose, it is the convenient fire hose special interface of fire hose and interface connection integration. BACKGROUND

[0002] Fire hose butt joint interface is a kind of device specially designed to connect two sections of fire hose, so that the length of the hose can be extended or the direction of the water flow can be changed.

[0003] In emergency fire scene, every second counts, and the water hose interface requires quick docking. To improve the connection efficiency and avoid mistakes, the demand and application prospect of male-female pipe interface are great. Chinese patent with publication number CN106439327A discloses a new type of fire hose pipe joint, which comprises a male-female pipe joint composed of a lock catch part protruding radially outward on the front end of the inner cylinder and a elastic lock tongue protruding inward on the inner surface of the front end of the outer cylinder. Chinese patent with publication number CN102758981B discloses a fire hose joint, which comprises a male-female pipe joint composed of repelling magnets.

[0004] However, it is worth considering that the above two kinds of male-female pipe joints have single function and large connection stiffness. When the connected hose is not straight enough and is rolled up, a large torque will be generated at the pipe joint after water flows, and the joint cannot adjust and adapt to the torque, which has the risk of falling off.

[0005] Therefore, in order to solve the above problems, a more suitable related facility needs to appear. UTILITY MODEL CONTENTS

[0006] Therefore, the utility model aims to provide a quick water hose joint for preventing falling off to solve the problem that the existing male-female pipe joint is easy to fall off when connecting the rolled up hose.

[0007] In order to further improve the sealing performance of the plane bearing, a first water leakage prevention sealing ring is provided outside the bearing seat. The plane bearing can be a double-row ball plane bearing.

[0008] In order to further improve the sealing performance of the plane bearing, a first water leakage prevention sealing ring is provided outside the bearing seat. The plane bearing can be a double-row ball plane bearing.

[0009] Through the above technical solution, the first rotatable inner connector can rotate freely between the plane bearing and the docking assembly. When the fire hose coils or wraps at the joint, the hose can be reset by rotating the first rotatable inner connector while high-pressure water is being supplied, thus counteracting the torque generated at the joint when the coiled or wrapped hose is reset. Furthermore, in cases of insufficient water pressure, the first rotatable inner connector can be manually rotated to adjust the hose and resolve water blockage at the knot.

[0010] Furthermore, the docking assembly includes a second rotatable inner connector and an outer locking connector. A limiting ring is fixedly connected to the outer side of the second rotatable inner connector and fitted with a locking nut. The limiting ring defines the position of the locking nut. The second rotatable inner connector is threadedly connected to the bearing housing. A planar bearing is fitted onto the outer side of the bearing housing. The planar bearing and bearing housing, along with the second rotatable inner connector, are embedded inside the first rotatable inner connector. An axial connection thread is provided on the outer side of the first rotatable inner connector. An internal thread adapted to the axial connection thread is provided on the inner side of the locking nut. The locking nut is used for axial fixation of the first and second rotatable inner connectors. Here, the limiting ring, in addition to defining the position of the locking nut, also defines the position of the bearing housing. When designing the length of the second rotatable inner connector, the position of the limiting ring should be fully considered to ensure that the expanding snap-fit ​​connector has sufficient length to extend out of the outer locking connector. The inner diameter of the locking nut should be larger than the outer diameter of the second rotatable inner connector. The limiting ring is fixed using a threaded connection, sharing the same thread as the bearing housing.

[0011] Furthermore, the second rotatable inner connection is fixedly connected to an enlarged snap-fit ​​connector at the end away from the bearing seat. The outer diameter of the main body of the enlarged snap-fit ​​connector is larger than the outer diameter of the second rotatable inner connection. The outer diameter of the main body of the enlarged snap-fit ​​connector is equal to the outer diameter of the limiting ring. A tapered section is provided at the end of the enlarged snap-fit ​​connector away from the bearing seat. The enlarged snap-fit ​​connector and the tapered section are inserted into and snapped into the outer locking connector.

[0012] Furthermore, the external locking connector includes a fixing part, a docking part, and a docking retaining ring. The inner diameter of the opening of the fixing part near the end of the enlarged retaining connector is equal to the second rotatable inner outer diameter. The docking retaining ring is placed inside the docking part, and the inner diameter of the docking retaining ring is the same as the outer diameter of the main body of the enlarged retaining connector. An elastic diameter-changing block is provided on the inner side of the docking retaining ring. One side of the elastic diameter-changing block is straight and the other side is a gradually changing slope. The tapered section is adapted to the gradually changing slope of the elastic diameter-changing block.

[0013] Furthermore, the other end of the enlarged snap-fit ​​connector is provided with a snap-fit ​​slider. During the rotation of the second rotatable inner connector, the snap-fit ​​slider presses against the elastic variable diameter snap block and forces the elastic variable diameter snap block to retract into the mating snap ring so that the second rotatable inner connector can extend out of the outer locking connector.

[0014] Furthermore, a second leak-proof sealing ring is provided in the gap between the tapered section and the docking part.

[0015] Furthermore, the hose fixing assembly includes an inner liner and a locking connector; the first rotatable inner connector includes a hose fixing part and a hose fixing thread, the hose fixing part is fitted with an inner liner, and a locking connector adapted to the hose fixing thread is provided on the outer side of the inner liner.

[0016] Furthermore, there are three of each of the snap-fit ​​slider and the elastic variable diameter snap-fit ​​block, all of which are evenly distributed.

[0017] Furthermore, the mating part is provided with a screw hole along the longitudinal direction, and a screw, a spring and a damping steel ball are arranged in sequence in the screw hole. The damping steel ball is slightly exposed in the mating part. The enlarged snap connector is provided with a damping groove along the longitudinal direction that is adapted to the damping steel ball. The damping steel ball is embedded in the damping groove and plays a damping role on the rotation of the second rotatable inner connector.

[0018] The beneficial effects of this utility model are:

[0019] 1. The universal fast water hose interface of this utility model is male and female in one body. When docking, the second rotatable inner part of any interface unit can extend out of the locking interface and be inserted into the locking connector of the other interface unit, realizing fast docking without distinguishing between male and female. The structure is ingenious, the operation is simple and quick, and the two interface units have the same structure. Only one set of processing technology and mold is needed for mass production, saving costs.

[0020] 2. The universal quick-connect water hose interface of this utility model is equipped with a self-adjusting reset component, which allows the relative rotation between the interface components to offset the additional torque generated at the joint when the water hose is wound and reset by water flow, preventing the interface from being damaged by additional torque or even causing injury under high pressure water output.

[0021] 3. This utility model of anti-detachment universal quick water hose interface can also be used for civil irrigation, liquid transportation, etc. When the water pressure is insufficient, the water hose may become tangled or knotted. The water hose can be manually adjusted by rotating the first rotatable inner connector to solve the water blockage problem at the knot. The operation is convenient and quick. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0023] Figure 2 This is an exploded structural diagram of the entire embodiment of the present utility model;

[0024] Figure 3 This is an exploded structural diagram of the water hose fixing assembly according to an embodiment of the present utility model;

[0025] Figure 4 This is an exploded structural diagram of the self-adjusting reset component according to an embodiment of the present invention;

[0026] Figure 5 This is an exploded structural diagram of the external locking connector according to an embodiment of the present invention.

[0027] Figure 6 This is a partial structural diagram of the docking part of this utility model.

[0028] The markings in the diagram are as follows: 1. First rotatable inner connection; 101. Water hose fixing part; 102. Water hose fixing thread; 103. Axial connection thread; 2. Inner liner; 3. Locking joint; 4. Flat bearing; 5. Bearing seat; 501. First leak-proof sealing ring; 6. Second rotatable inner connection; 601. Limiting ring; 602. Second leak-proof sealing ring; 7. Locking nut; 8. Enlarged snap-fit ​​joint; 801. Gradient section; 802. Snap-fit ​​slider; 803. Damping groove; 9. External locking joint; 901. Fixing part; 902. Butt joint; 9021. Butt fixing snap ring; 10. Butt snap ring; 1002. Elastic diameter reducing snap block; 90201. Screw hole; 90202. Screw; 90203. Spring; 90204. Damping steel ball; 11. Interface unit. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0030] This embodiment proposes a universal quick-connect water hose interface for preventing detachment, such as... Figure 2 As shown, it includes two interface units 11. The two interface units 11 have the same structure and are symmetrically arranged when they are connected.

[0031] The connector unit 11 includes a hose fixing assembly, a self-adjusting reset assembly, and a docking assembly. The self-adjusting reset assembly includes a first rotatable inner connector 1, a plane bearing 4, and a bearing housing 5. One end of the first rotatable inner connector 1 is connected to the hose fixing assembly, and the other end is connected to the docking assembly via the plane bearing 4 and the bearing housing 5. The first rotatable inner connector 1 can rotate freely between the plane bearing 4 and the docking assembly. To further improve the sealing performance at the plane bearing 4, a first leak-proof sealing ring 501 is fitted on the outside of the bearing housing 5. The plane bearing 4 is a double-row ball plane bearing.

[0032] like Figure 1 and Figure 2As shown, the docking assembly includes a second rotatable inner connector 6 and an outer locking connector 9. A limiting ring 601 is fixedly connected to the outer side of the second rotatable inner connector 6 and a locking nut 7 is fitted on it. The inner diameter of the locking nut 7 should be larger than the outer diameter of the second rotatable inner connector 6. The limiting ring 601 is used to limit the position of the locking nut 7. The second rotatable inner connector 6 is threadedly connected to the bearing housing 5. A flat bearing 4 is fitted on the outer side of the bearing housing 5. The flat bearing 4 and the bearing housing 5, together with the second rotatable inner connector 6, are embedded inside the first rotatable inner connector 1. An axial connecting thread 103 is provided on the outer side of the first rotatable inner connector 1. An internal thread adapted to the axial connecting thread 103 is provided on the inner side of the locking nut 7. The locking nut 7 is used for axial fixation of the first rotatable inner connector 1 and the second rotatable inner connector 6. Here, the limiting ring 601, in addition to limiting the position of the locking nut 7, also limits the position of the bearing housing 5. The limiting ring 601 is fixed by a threaded connection and shares the thread with the bearing housing 5. When designing the length of the second rotatable inner connector 6, the position of the limiting ring 601 should be fully considered to ensure that the enlarged locking connector 8 has sufficient length to extend out of the outer locking connector 9.

[0033] like Figure 2 and Figure 4 As shown, the end of the second rotatable inner connector 6 away from the bearing housing 5 is fixedly connected to an enlarged snap-fit ​​connector 8. The outer diameter of the main body of the enlarged snap-fit ​​connector 8 is larger than the outer diameter of the second rotatable inner connector 6, and the outer diameter of the main body of the enlarged snap-fit ​​connector 8 is equal to the outer diameter of the limiting ring 601. A tapered section 801 is provided at the end of the enlarged snap-fit ​​connector 8 away from the bearing housing 5. The enlarged snap-fit ​​connector 8 and the tapered section 801 are inserted into and snapped into the outer locking connector 9. The second rotatable inner connector 6 is inserted into the outer locking connector 9, the locking nut 7 is fitted in, the limiting ring 601 is screwed in, and then it is screwed into the bearing housing 5. The flat bearing 4 is then assembled, and the whole assembly is inserted into the first rotatable inner connector 1. The locking nut 7 is then tightened. In order to facilitate processing and production and enhance strength, the second rotatable inner connector 6, the enlarged snap-fit ​​connector 8, and the tapered section 801 are designed as an integral structure.

[0034] like Figure 5As shown, the external locking connector 9 includes a fixing part 901, a docking part 902, and a docking retaining ring 10. The inner diameter of the opening of the fixing part 901 near the end of the enlarged locking connector 8 is equal to the outer diameter of the second rotatable inner connector 6. The docking retaining ring 10 is placed inside the docking part 902, and the inner diameter of the docking retaining ring 10 is the same as the outer diameter of the main body of the enlarged locking connector 8. Three evenly distributed elastic variable diameter retaining blocks 1002 are provided on the inner side of the docking retaining ring 10. One side of the elastic variable diameter retaining block 1002 is flat and the other side is a gradually changing slope. The tapered section 801 is adapted to the gradually changing slope of the elastic variable diameter retaining block 1002. Three evenly distributed locking sliders 802 are provided at the other end of the enlarged locking connector 8. During the rotation of the second rotatable inner connector 6, the locking sliders 802 press against the elastic variable diameter retaining blocks 1002 and force the elastic variable diameter retaining blocks 1002 to retract into the docking retaining ring 10 so that the second rotatable inner connector 6 can extend out of the external locking connector 9. To further improve the sealing performance, a second leak-proof sealing ring 602 is provided in the gap between the tapered section 801 and the mating part 902.

[0035] like Figure 3 As shown, the hose fixing assembly includes an inner liner 2 and a locking connector 3; the first rotatable inner connector 1 includes a hose fixing part 101 and a hose fixing thread 102. The inner liner 2 is sleeved on the outside of the hose fixing part 101, and a locking connector 3 adapted to the hose fixing thread 102 is provided on the outside of the inner liner 2. When connecting the hose, the hose is sleeved on the hose fixing part 101, and the inner liner is pressed on the outside of the hose. The locking connector 3 is then tightened to firmly fix the hose to the hose fixing part 101.

[0036] like Figure 6 As shown, a screw hole 90201 is provided longitudinally on the docking part 902. A screw 90202, a spring 90203, and a damping steel ball 90204 are sequentially arranged in the screw hole 90201. The damping steel ball 90204 protrudes slightly from the docking part 902. A damping groove 803 adapted to the damping steel ball 90204 is provided longitudinally on the enlarged snap-fit ​​connector 8. The damping steel ball 90204 is embedded in the damping groove 803 and plays a damping role in the rotation of the second rotatable inner connector 6.

[0037] Assembly process and working principle:

[0038] Assembly of the interface unit: First, pass the second rotatable inner connector 6 through the outer locking connector 9, allowing the enlarged snap connector 8 to snap into the fixing part 901. Then, insert the locking nut 7 onto the second rotatable inner connector 6, screw in the limiting fixing ring 601 and bearing seat 5, assemble the first leak-proof sealing ring 501 and the flat bearing 4, and after assembly, insert it into the first rotatable inner connector 1. Tighten the locking nut 7 to the axial connecting thread 103 on the first rotatable inner connector 1. Place the inner liner 2 and locking connector 3 over the water hose (not shown in the figure), and then together place them on the tail of the first rotatable inner connector 1. Tighten the locking connector 3 to the axial connecting thread 103 on the first rotatable inner connector 1 to achieve the connection of the water hose.

[0039] When two interface units are connected, the second rotatable inner connector 6 of one interface unit is first extended out of the outer locking connector 9. The extended part (expanded locking connector 8) is directly inserted into the docking part 902 of the other interface unit. The tapered section 801 of the expanded locking connector 8 presses against the tapered slope of the elastic variable diameter locking block 1002. After successfully passing through the fixing part 901, the expanded locking connector 8 is fixed to the straight side of the elastic variable diameter locking block 1002. At this time, the second rotatable inner connectors 6 of the two interfaces are aligned and sealed by the second leak-proof sealing ring 602, thereby completing the locking of the two male and female anti-detachment universal fast water hose interfaces.

[0040] This invention's structural design not only enables quick connection of hose interfaces regardless of gender, but also allows for automatic rotation and reset of the hose by utilizing the pressure and force of high-pressure water when the hose is coiled or wound, eliminating additional torque at the hose connection interface. The self-adjusting reset component of this invention uses bearing rotation, which is stable and reliable, minimizes wear on the interface components, and does not affect service life.

Claims

1. A quick coupling for fire hose, comprising two coupling units (11), characterized in that, the two coupling units (11) are identical in structure and symmetrically arranged when coupled; the coupling unit (11) comprises a hose fixing assembly, a self-adjusting reset assembly and a coupling assembly; the self-adjusting reset assembly comprises a first rotatable inner joint (1), a plain bearing (4) and a bearing seat (5), one end of the first rotatable inner joint (1) is connected with the hose fixing assembly, the other end is connected with the coupling assembly through the plain bearing (4) and the bearing seat (5), and the first rotatable inner joint (1) can freely rotate between the plain bearing (4) and the coupling assembly.

2. A quick coupling hose connection for preventing the release of a hose according to claim 1, characterized in that The outer part of the bearing seat (5) is sleeved with a first water leakage prevention sealing ring (501).

3. The quick coupling for fire hose according to claim 1, characterized in that, the coupling assembly comprises a second rotatable inner joint (6) and an outer locking connector (9), the second rotatable inner joint (6) is fixedly connected with a limiting ring (601) on the outside and sleeved with a locking nut (7), the limiting ring (601) is used to limit the position of the locking nut (7), the second rotatable inner joint (6) is threadedly connected with the bearing seat (5), the plain bearing (4) is sleeved on the outside of the bearing seat (5), the plain bearing (4), the bearing seat (5) and the second rotatable inner joint (6) are embedded in the first rotatable inner joint (1), an axial connection thread (103) is arranged on the outside of the first rotatable inner joint (1), an inner thread is arranged on the inside of the locking nut (7) and matched with the axial connection thread (103), and the locking nut (7) is used for axial fixation of the first rotatable inner joint (1) and the second rotatable inner joint (6).

4. The quick coupling for fire hose according to claim 3, characterized in that, an enlarged clamping connector (8) is fixedly connected with the end of the second rotatable inner joint (6) away from the bearing seat (5), the inner diameter of the main part of the enlarged clamping connector (8) is larger than the outer diameter of the second rotatable inner joint (6), the outer diameter of the main part of the enlarged clamping connector (8) is equal to the outer diameter of the limiting ring (601), a tapered section (801) is arranged on the end of the enlarged clamping connector (8) away from the bearing seat (5), and the enlarged clamping connector (8) and the tapered section (801) are inserted and clamped in the outer locking connector (9).

5. The quick coupling for fire hose according to claim 4, characterized in that, the outer locking connector (9) comprises a fixed part (901), a coupling part (902) and a coupling clamping ring (10), the inner diameter of the opening of the fixed part (901) near the end of the enlarged clamping connector (8) is equal to the outer diameter of the second rotatable inner joint (6), the coupling clamping ring (10) is arranged in the coupling part (902), the inner diameter of the coupling clamping ring (10) is the same as the outer diameter of the main part of the enlarged clamping connector (8), an elastic variable-diameter clamping block (1002) is arranged on the inside of the coupling clamping ring (10), one side of the elastic variable-diameter clamping block (1002) is flat and the other side is a tapered slope surface, and the tapered section (801) is matched with the tapered slope surface of the elastic variable-diameter clamping block (1002).

6. A quick-connect hose coupling for preventing disconnection according to claim 5, wherein The other end of the expansion clamp joint (8) is provided with a clamp sliding block (802), and the second rotatable inner joint (6) is pressed to the elastic variable-diameter clamp block (1002) and forces the elastic variable-diameter clamp block (1002) to shrink into the butt joint clamp ring (10) during rotation, so as to facilitate the second rotatable inner joint (6) to extend out of the outer locking joint (9).

7. A quick coupling hose connection according to claim 5 or 6, c h a r a c t e r i s e d in that The gap between the tapered section (801) and the butt joint part (902) is provided with a second water leakage prevention sealing ring (602).

8. The quick water hose connector for preventing disconnection according to claim 1, characterized in that, The water hose fixing assembly comprises an inner liner (2) and a locking joint (3). The first rotatable inner joint (1) comprises a water hose fixing part (101) and a water hose fixing thread (102), The water hose fixing part (101) is externally sleeved with the inner liner (2), and the outer side of the inner liner (2) is provided with the locking joint (3) matched with the water hose fixing thread (102).

9. A quick-connect hose coupling for preventing disconnection according to claim 6, wherein The clamp sliding block (802) and the elastic variable-diameter clamp block (1002) each have three, which are uniformly distributed.

10. The quick-connect hose coupling of Claim 5, wherein: The butt joint part (902) is longitudinally provided with a screw hole (90201), the screw hole (90201) is sequentially provided with a screw (90202), a spring (90203) and a damping steel ball (90204), the damping steel ball (90204) slightly protrudes from the butt joint part (902), the expansion clamp joint (8) is longitudinally provided with a damping groove (803) matched with the damping steel ball (90204), and the damping steel ball (90204) is embedded in the damping groove (803) to damp the rotation of the second rotatable inner joint (6).

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