High-pressure self-locking connector

Abstract

The utility model relates to the technical field of high-pressure cleaning, in particular to a high-pressure self-locking connector used in high-pressure cleaning equipment. In order to facilitate assembly and improve use safety, the high-pressure self-locking connector is characterized in that in a connecting piece, a connecting pipe is provided with a self-locking through hole, a locking through hole for installing a locking ball and a limiting convex ring located between the self-locking through hole and the locking through hole; the locking ring is arranged on the connecting pipe in a sleeving mode and is close to the water outlet connector connected with the connecting pipe. The locking ring is provided with a receding groove which is matched with the locking through hole to clamp the locking ball when the water connector is inserted and pulled out. The adjusting cover is arranged on the connecting pipe in a sleeving mode and connected with the locking ring, a self-locking cavity communicated with the self-locking through hole is formed between the adjusting cover and the connecting pipe, and a self-locking elastic piece is arranged in the self-locking cavity; a locking clamping groove which is matched with the locking through hole to clamp the locking ball in the self-locking state is formed in the outer wall of the water outlet connector. The high-pressure self-locking connector is convenient to assemble and high in use safety.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure cleaning, in particular to a high-pressure self-locking joint used in high-pressure cleaning equipment. Background Art

[0002] At present, when the water inlet and the water outlet of the commonly used joints of high-pressure cleaning equipment are connected, the water outlet is usually inserted into the water outlet first, and then the locking ring on the water inlet is slidably sleeved, and the locking ball is squeezed by the locking ring to make the locking ball clamped in the joint between the locking through hole on the water inlet and the locking groove on the water outlet, so that the water inlet and the water outlet are clamped together. Such a joint is inconvenient to assemble; when high-pressure water is passed, the water outlet is easily separated from the water inlet at high speed due to the impact of high-pressure water, affecting the use, and even hitting nearby people or objects, and the use safety is low. Utility Model Content

[0003] In order to facilitate assembly and improve the safety of use, the utility model proposes a high-pressure self-locking joint, which includes a water inlet joint, a water outlet joint and a connecting piece, wherein the connecting piece includes a connecting pipe, a locking ring and an adjusting cover, the water inlet end of the connecting pipe is connected to the water inlet joint, the water outlet end of the connecting pipe is connected to the water outlet joint, a self-locking through hole and a locking through hole are provided on the connecting pipe, the self-locking through hole is close to the water inlet end, and the locking through hole is close to the water outlet end; a limiting convex ring is provided on the outer wall of the connecting pipe, and the limiting convex ring is located between the self-locking through hole and the locking through hole;

[0004] The locking ring is sleeved on the connecting pipe, and a clearance groove is provided on the inner wall of the locking ring;

[0005] The adjusting cover is sleeved on the connecting pipe and connected to the locking ring, and the inner wall of the adjusting cover and the outer wall of the connecting pipe are surrounded to form a self-locking cavity, the self-locking cavity is communicated with the self-locking through hole, and a self-locking elastic member is arranged in the self-locking cavity;

[0006] A locking slot is provided on the outer wall of the water outlet joint. When the water outlet joint is inserted into the connecting pipe and connected with the connecting pipe, the connecting pipe moves toward the water inlet joint relative to the adjusting cover, and the locking ball installed in the locking through hole moves toward the outside of the connecting pipe under the push of the water outlet joint and is clamped at the joint between the locking through hole and the giving way groove; when the water outlet joint is inserted into place, the locking slot is connected with the locking through hole, and the locking ring and the adjusting cover move toward the water inlet end under the push of the self-locking elastic member, and the locking ball moves toward the inside of the connecting pipe under the push of the locking ring and is clamped at the joint between the locking through hole and the locking slot.

[0007] When the high-pressure self-locking joint of the utility model is used to connect the high-pressure water inlet pipe and the high-pressure water outlet pipe, the high-pressure water inlet pipe is connected to the water inlet joint in the high-pressure self-locking joint of the utility model, and the high-pressure water outlet pipe is connected to the water outlet joint in the high-pressure self-locking joint of the utility model. After high-pressure water is introduced into the high-pressure water inlet pipe, the high-pressure water entering the connecting pipe enters the self-locking cavity through the self-locking through hole, and the high-pressure water filled in the self-locking cavity cooperates with the self-locking elastic member to apply a locking tension toward the water inlet joint to the connected adjustment cover and the locking ring, and applies a locking thrust toward the water outlet joint to the connecting pipe through the limiting convex ring, so that the inner wall of the locking ring is pressed against the locking ball, and the locking ball is kept stuck in the joint between the locking through hole and the locking groove. Therefore, after the water outlet joint is inserted into the connecting pipe and inserted into place, the high-pressure self-locking joint of the utility model can achieve self-locking through the locking ball; when the high-pressure water is passed into the high-pressure self-locking joint of the utility model, the high-pressure water filled in the self-locking cavity cooperates with the self-locking elastic part to improve the self-locking stability of the high-pressure self-locking joint of the utility model, and the higher the water pressure of the high-pressure water passed, the higher the self-locking stability of the high-pressure self-locking joint of the utility model, and the higher the safety of use.

[0008] Preferably, the give-way groove is an annular groove, and the side wall of the give-way groove near the water outlet end of the connecting pipe is set as a slope surface. In this way, the give-way groove is set as an annular groove, and when the locking ring is assembled on the connecting pipe, the locking ring can be directly placed on the connecting pipe, and the assembly is simple and convenient; the side wall of the give-way groove near the water outlet end of the connecting pipe is set as a slope surface, and when the water outlet connector is inserted into the connecting pipe, it is convenient for the locking ball to slide into the give-way groove and be stuck at the joint between the give-way groove and the locking through hole; when the water outlet connector is pulled out of the connecting pipe, it is convenient for the locking ball to slide out of the give-way groove. Therefore, the utility model high-pressure self-locking connector assembly machine is simple and convenient to use.

[0009] Preferably, a water outlet sealing ring groove is provided on the inner wall of the connecting pipe, a water outlet sealing ring is provided in the water outlet sealing ring groove, and when the water outlet joint is inserted in place, the water outlet sealing ring is sleeved on the outer wall of the water outlet joint. In this way, the water outlet sealing ring is provided in the water outlet sealing ring groove, which can prevent the high-pressure water from overflowing from the joint between the connecting pipe and the water outlet joint in the high-pressure self-locking joint of the utility model, thereby improving the sealing performance of the high-pressure self-locking joint of the utility model. Further, a positioning inner convex ring is provided on the inner wall of the connecting pipe, and the positioning inner convex ring is located between the self-locking through hole and the water outlet sealing ring groove and close to the water outlet sealing ring groove. In this way, a positioning inner convex ring is provided on the inner wall of the connecting pipe, and when the water outlet joint is inserted, the positioning inner convex ring can be used to position the water outlet joint, and the positioning is simple and convenient, which can improve the assembly and use efficiency of the high-pressure self-locking joint of the utility model. Further preferably, a limiting member and a limiting elastic member are provided in the connecting pipe, the limiting member includes a limiting tube and a limiting ring, the limiting tube is inserted in the positioning inner convex ring, the limiting ring is located on the outer wall of the limiting tube and close to the self-locking through hole; the limiting elastic member is located between the water inlet joint and the limiting member and pushes the limiting member to move toward the water outlet end of the connecting pipe. In this way, when the water outlet joint in the high-pressure self-locking joint of the utility model is pulled out from the connecting pipe, the limiting tube in the limiting member moves toward the water outlet end of the connecting pipe under the push of the limiting elastic member to clamp the water outlet sealing ring in the water outlet sealing ring groove, so as to prevent the water outlet sealing ring from falling off and affecting the sealing performance of the high-pressure self-locking joint of the utility model. Preferably, the self-locking elastic member and the limiting elastic member are both springs. In this way, the use of springs as the self-locking elastic member and the limiting elastic member is simple and convenient to select.

[0010] Preferably, a water inlet sealing groove is provided on the inner wall of the port of the adjusting cover close to the water inlet joint, and a water inlet sealing ring is provided in the water inlet sealing groove; a limiting sealing groove is provided on the limiting convex ring, and a limiting sealing ring is provided in the limiting sealing groove. In this way, when high-pressure water is introduced, the water inlet sealing ring and the limiting sealing ring can be used to seal at both ends of the self-locking cavity to prevent the high-pressure water in the self-locking cavity from overflowing, thereby improving the sealing performance of the high-pressure self-locking joint of the utility model. Further, an internal thread is provided on the inner wall of the connecting end of the adjusting cover facing the locking ring, and an external thread connected to the adjusting cover is provided on the outer wall of the connecting end of the locking ring facing the adjusting cover. In this way, in the high-pressure self-locking joint of the utility model, the adjusting cover and the locking ring are connected by threads, and the connection is simple and convenient. When realizing self-locking, the limiting convex ring can be used to limit the moving range of the locking ring toward the water inlet end of the connecting pipe, thereby preventing the locking ball from falling off from the locking through hole due to excessive movement of the locking ring, thereby affecting the use of the high-pressure self-locking joint of the utility model.

[0011] Preferably, the locking slot is an annular groove, and the side wall of the locking slot near the water inlet of the water outlet joint is set as a sloped surface. In this way, the locking slot is set as an annular groove, and when the water outlet joint is inserted into the connecting pipe, the water outlet joint can be directly inserted into the connecting pipe, and the assembly is simple and convenient; the side wall of the locking slot near the water inlet of the water outlet joint is set as a sloped surface, and when the water outlet joint is inserted into the connecting pipe, it is convenient for the locking ball to slide into the locking slot and be stuck in the alignment of the locking slot and the locking through hole; when the water outlet joint is pulled out of the connecting pipe, it is convenient for the locking ball to slide out of the locking slot. Therefore, the utility model high-pressure self-locking joint assembly machine is simple and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the high-pressure self-locking joint of the utility model;

[0013] Figure 2 for Figure 1 AA cross-sectional structure diagram in;

[0014] Figure 3 It is a schematic diagram of the structure of the water outlet joint in the high-pressure self-locking joint of the utility model when it is pulled out;

[0015] Figure 4 for Figure 3 BB cross-sectional structure diagram in FIG.

[0016] Figure 5 It is a structural schematic diagram of the high-pressure self-locking joint of the utility model when the water outlet joint is inserted into the locking through hole;

[0017] Figure 6 for Figure 5 Schematic diagram of CC cross-sectional structure;

[0018] Figure 7 It is a structural schematic diagram of the high-pressure self-locking joint of the utility model when the locking ball is clamped at the joint of the locking through hole and the clearance groove;

[0019] Figure 8 for Figure 7 Schematic diagram of DD cross-sectional structure. DETAILED DESCRIPTION

[0020] Next, combine Figures 1 to 8 , the utility model high-pressure self-locking joint is described in detail.

[0021] like Figures 1 to 8As shown, the utility model high-pressure self-locking joint comprises a water inlet joint 1, a water outlet joint 2 and a connecting piece. Among them, the connecting piece comprises a connecting pipe 31, a locking ring 32 and an adjusting cover 33. The water inlet end of the connecting pipe 31 is connected to the water inlet joint 1, and the water outlet end of the connecting pipe 31 is connected to the water outlet joint 2. The connecting pipe 31 is provided with a self-locking through hole 311 and a locking through hole 312. The self-locking through hole 311 is close to the water inlet end, and the locking through hole 312 is close to the water outlet end. A limiting convex ring 313 is provided on the outer wall of the connecting pipe 31, and the limiting convex ring 313 is located between the self-locking through hole 311 and the locking through hole 312. The locking ring 32 is sleeved on the connecting pipe 31, and a clearance groove 321 is provided on the inner wall of the locking ring 32. The adjusting cover 33 is sleeved on the connecting pipe 31 and connected to the locking ring 32, and the inner wall of the adjusting cover 33 and the outer wall of the connecting pipe 31 are surrounded to form a self-locking cavity 301, which is communicated with the self-locking through hole 311, and a self-locking elastic member 34 is arranged in the self-locking cavity 301; a locking groove 21 is arranged on the outer wall of the water outlet joint 2, and when the water outlet joint 2 is inserted into the connecting pipe 31 and connected to the connecting pipe 31, the connecting pipe 31 moves toward the water inlet joint 1 relative to the adjusting cover 33, and is installed in the locking through hole 311. The locking ball 35 in the hole 312 moves to the outside of the connecting pipe 31 under the push of the water outlet connector 2 and is stuck at the joint between the locking through hole 312 and the clearance groove 321; when the water outlet connector 2 is inserted in place, the locking slot 21 is connected to the locking through hole 312, and the locking ring 32 and the adjustment cover 33 move toward the water inlet end under the push of the self-locking elastic member 34, and the locking ball 35 moves to the inside of the connecting pipe 31 under the push of the locking ring 32 and is stuck at the joint between the locking through hole 312 and the locking slot 21. Preferably, a spring is used as the self-locking elastic member 34 to be sleeved on the connecting pipe 31, which is simple and convenient to select. Preferably, two self-locking through holes 311 are provided on the connecting pipe 31, and the two self-locking through holes 311 are symmetrically arranged. In this way, when high-pressure water is introduced, the high-pressure water in the connecting pipe 31 can be injected into the self-locking chamber 301 through two symmetrically arranged self-locking through holes 311, so that the adjustment cover 33 sleeved on the connecting pipe 31 can remain stable. Preferably, the connecting pipe 31 is provided with a plurality of locking through holes 312 for installing locking balls 35, and these locking through holes 312 are evenly distributed on the same circumference. In this way, when the water outlet connector 2 is inserted into the connecting pipe 31, a plurality of locking balls 312 can be used to cooperate and clamp the water outlet connector 2, thereby improving the connection stability between the water outlet connector 2 and the connecting pipe 31. Preferably, a steel ball is used as the locking ball 35, which is convenient to select and durable. Preferably, the clearance groove 321 on the locking ring 32 is an annular groove, and the side wall 3211 of the clearance groove 321 close to the water outlet end of the connecting pipe 31 is set as a slope surface.In this way, the clearance groove 312 is set as an annular groove. When the locking ring 32 is assembled on the connecting pipe 31, the locking ring 32 can be directly sleeved on the connecting pipe 31, which is simple and convenient to assemble; the side wall 3211 of the clearance groove 321 close to the water outlet end of the connecting pipe 31 is set as a slope surface, and when the water outlet connector 2 is inserted into the connecting pipe 31, it is convenient for the locking ball 3 to slide into the clearance groove 321 and be stuck at the joint between the clearance groove 321 and the locking through hole 312; when the water outlet connector 2 is pulled out of the connecting pipe 31, it is convenient for the locking ball 35 to slide out of the clearance groove 321. Preferably, the locking groove 21 on the water outlet connector 2 is an annular groove, and the side wall 211 of the locking groove 21 close to the water inlet of the water outlet connector 2 is set as a slope surface. In this way, the locking groove 21 is set as an annular groove. When the water outlet connector 2 is inserted into the connecting pipe 31, the water outlet connector 2 can be directly inserted into the connecting pipe 31, and the assembly is simple and convenient; the side wall 211 of the locking groove 21 close to the water inlet of the water outlet connector 2 is set as a slope surface, and when the water outlet connector 2 is inserted into the connecting pipe 31, it is convenient for the locking ball 35 to slide into the locking groove 21 and be clamped at the position of the locking groove 21 and the locking through hole 312; when the water outlet connector 2 is pulled out of the connecting pipe 31, it is convenient for the locking ball 35 to slide out of the locking groove 21. Preferably, a water outlet sealing ring groove (not shown in the figure) is provided on the inner wall of the connecting pipe 31, and a water outlet sealing ring 36 is provided in the water outlet sealing ring groove, and when the water outlet connector 2 is inserted into place, the water outlet sealing ring 36 is sleeved on the outer wall of the water outlet connector 2. In this way, the water outlet sealing ring 36 is arranged in the water outlet sealing ring groove, which can prevent the high-pressure water from overflowing from the joint between the connecting pipe 31 and the water outlet joint 2 in the high-pressure self-locking joint of the utility model, thereby improving the sealing performance of the high-pressure self-locking joint of the utility model. Preferably, a positioning inner convex ring 314 is arranged on the inner wall of the connecting pipe 31, and the positioning inner convex ring 314 is located between the self-locking through hole 311 and the water outlet sealing ring groove and close to the water outlet sealing ring groove. In this way, the positioning inner convex ring 314 is arranged on the inner wall of the connecting pipe 31, and when the water outlet joint 2 is inserted, the positioning inner convex ring 314 can be used to block the water outlet joint 2 to position the water outlet joint 2, and the positioning is simple and convenient, which can improve the assembly and use efficiency of the high-pressure self-locking joint of the utility model. Preferably, a limiting member 37 and a limiting elastic member 38 are provided in the connecting pipe 31, the limiting member 37 includes a limiting tube 371 and a limiting ring 372, the limiting tube 371 is inserted in the positioning inner convex ring 314, the limiting ring 372 is located on the outer wall of the limiting tube 371 and close to the self-locking through hole 311; the limiting elastic member 38 is located between the water inlet connector 1 and the limiting member 37 and pushes the limiting member 37 to move toward the water outlet end of the connecting pipe 31.In this way, when the outlet connector 2 in the utility model high-pressure self-locking connector is pulled out from the connecting pipe 31, the limiting tube 371 in the limiting member 37 moves toward the outlet end of the connecting pipe 31 under the push of the limiting elastic member 38 to clamp the outlet seal ring 36 in the outlet seal ring groove, so as to prevent the outlet seal ring 36 from falling off and affecting the sealing performance of the utility model high-pressure self-locking connector. Preferably, a water inlet seal groove (not shown in the figure) is provided on the inner wall of the port of the adjustment cover 33 close to the inlet connector 1, and a water inlet seal ring 39 is provided in the water inlet seal groove; a limiting seal groove (not shown in the figure) is provided on the limiting convex ring 313, and a limiting seal ring 30 is provided in the limiting seal groove. In this way, when high-pressure water is introduced, the water inlet seal ring 39 and the limiting seal ring 30 can be used to seal at both ends of the self-locking cavity 301, so as to prevent the high-pressure water in the self-locking cavity 301 from overflowing, thereby improving the sealing performance of the utility model high-pressure self-locking connector. Preferably, an internal thread is provided on the inner wall of the connection end of the adjustment cover 33 facing the locking ring 32, and an external thread connected to the adjustment cover 33 is provided on the outer wall of the connection end of the locking ring 32 facing the adjustment cover 33. In this way, in the high-pressure self-locking joint of the utility model, the adjustment cover 33 and the locking ring 32 are connected by threads, and the connection is simple and convenient. When self-locking is achieved, the limiting convex ring 313 can be used to limit the movement range of the locking ring 32 toward the water inlet end of the connecting pipe 31, so as to avoid the locking ball 35 falling off from the locking through hole 312 due to excessive movement of the locking ring 32, thereby affecting the use of the high-pressure self-locking joint of the utility model. Preferably, a spring is used as the limiting elastic member 38, which is simple and convenient to select.

[0022] When the high-pressure self-locking joint of the utility model is used to connect the high-pressure water inlet pipe and the high-pressure water outlet pipe, the high-pressure water inlet pipe is connected to the water inlet joint 1 in the high-pressure self-locking joint of the utility model, and the high-pressure water outlet pipe is connected to the water outlet joint 2 in the high-pressure self-locking joint of the utility model. After high-pressure water is introduced into the high-pressure water inlet pipe, the high-pressure water entering the connecting pipe 31 enters the self-locking cavity 301 through the self-locking through hole 311, and the high-pressure water filled into the self-locking cavity 301 cooperates with the self-locking elastic member 34 to apply a locking tension toward the water inlet joint 1 to the connected adjustment cover 33 and the locking ring 32, and applies a locking thrust toward the water outlet joint 2 to the connecting pipe 31 through the limiting convex ring 313, so that the inner wall of the locking ring 32 is pressed against the locking ball 35, and then the locking ball 35 is kept stuck in the joint between the locking through hole 312 and the locking slot 21. Therefore, after the water outlet connector 2 is inserted into the connecting pipe 31 and inserted into place, the high-pressure self-locking joint of the utility model can achieve self-locking through the locking ball 35; when the high-pressure water is passed into the high-pressure self-locking joint of the utility model, the high-pressure water filled in the self-locking chamber 301 cooperates with the self-locking elastic member 34 to improve the self-locking stability of the high-pressure self-locking joint of the utility model, and the higher the water pressure of the high-pressure water passed, the higher the self-locking stability of the high-pressure self-locking joint of the utility model, that is, the water outlet connector 2 is less likely to be detached from the connecting pipe 31, thereby preventing the water outlet connector 2 from reaching nearby people or objects, effectively improving the safety of use of the high-pressure self-locking joint of the utility model.

Claims

1. A high-pressure self-locking joint, characterized in that: The high-pressure self-locking joint comprises a water inlet joint, a water outlet joint and a connecting piece, wherein the connecting piece comprises a connecting pipe, a locking ring and an adjusting cover, wherein the water inlet end of the connecting pipe is connected to the water inlet joint, and the water outlet end of the connecting pipe is connected to the water outlet joint, and the connecting pipe is provided with a self-locking through hole and a locking through hole, wherein the self-locking through hole is close to the water inlet end, and the locking through hole is close to the water outlet end; a limiting convex ring is provided on the outer wall of the connecting pipe, and the limiting convex ring is located between the self-locking through hole and the locking through hole; The locking ring is sleeved on the connecting pipe, and a clearance groove is provided on the inner wall of the locking ring; The adjusting cover is sleeved on the connecting pipe and connected to the locking ring, and the inner wall of the adjusting cover and the outer wall of the connecting pipe are surrounded to form a self-locking cavity, the self-locking cavity is communicated with the self-locking through hole, and a self-locking elastic member is arranged in the self-locking cavity; A locking slot is provided on the outer wall of the water outlet joint. When the water outlet joint is inserted into the connecting pipe and connected with the connecting pipe, the connecting pipe moves toward the water inlet joint relative to the adjusting cover, and the locking ball installed in the locking through hole moves toward the outside of the connecting pipe under the push of the water outlet joint and is clamped at the joint between the locking through hole and the giving way groove; when the water outlet joint is inserted into place, the locking slot is connected with the locking through hole, and the locking ring and the adjusting cover move toward the water inlet end under the push of the self-locking elastic member, and the locking ball moves toward the inside of the connecting pipe under the push of the locking ring and is clamped at the joint between the locking through hole and the locking slot.

2. The high-pressure self-locking joint according to claim 1, characterized in that: The clearance groove is an annular groove, and the side wall of the clearance groove close to the water outlet end of the connecting pipe is arranged as a slope surface.

3. The high-voltage self-locking joint according to claim 1 or 2, characterized in that: A water outlet sealing ring groove is arranged on the inner wall of the connecting pipe, a water outlet sealing ring is arranged in the water outlet sealing ring groove, and when the water outlet joint is inserted in place, the water outlet sealing ring is sleeved on the water outlet joint.

4. The high-pressure self-locking joint according to claim 3, characterized in that: A positioning inner convex ring is arranged on the inner wall of the connecting pipe, and the positioning inner convex ring is located between the self-locking through hole and the water outlet sealing ring groove and close to the water outlet sealing ring groove.

5. The high-pressure self-locking joint according to claim 4, characterized in that: A limiting piece and a limiting elastic piece are provided in the connecting pipe, the limiting piece includes a limiting tube and a limiting ring, the limiting tube is inserted in the positioning inner convex ring, the limiting ring is located on the outer wall of the limiting tube and close to the self-locking through hole; the limiting elastic piece is located between the water inlet joint and the limiting piece and pushes the limiting piece to move toward the water outlet end of the connecting pipe.

6. The high-pressure self-locking joint according to claim 5, characterized in that: The self-locking elastic member and the limiting elastic member are both springs.

7. The high-pressure self-locking joint according to claim 1 or 2, characterized in that: A water inlet sealing groove is arranged on the inner wall of the port of the regulating cover close to the water inlet joint, and a water inlet sealing ring is arranged in the water inlet sealing groove; a limiting sealing groove is arranged on the limiting convex ring, and a limiting sealing ring is arranged in the limiting sealing groove.

8. The high-pressure self-locking joint according to claim 7, characterized in that: An internal thread is arranged on the inner wall of the connection end of the adjusting cover facing the locking ring, and an external thread connected to the adjusting cover is arranged on the outer wall of the connection end of the locking ring facing the adjusting cover.

9. The high-voltage self-locking joint according to claim 1 or 2, characterized in that: The locking groove is an annular groove, and the side wall of the locking groove close to the water inlet of the water outlet joint is arranged as a slope surface.

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