CN114602681B

CN114602681B - Autonomous explosion-proof switch of spray gun

Info

Publication number: CN114602681B
Application number: CN202210122004.1A
Authority: CN
Inventors: 洪荣东; 洪扁东; 洪文强
Original assignee: Quanzhou Liweisi Precision Hardware Co ltd
Current assignee: Quanzhou Liweisi Precision Hardware Co ltd
Priority date: 2022-02-09
Filing date: 2022-02-09
Publication date: 2023-06-09
Anticipated expiration: 2042-02-09
Also published as: CN114602681A

Abstract

The invention discloses an autonomous explosion-proof switch of a spray gun, which comprises an upper connector and a lower connector, wherein the upper connector is a water inlet end, the lower connector is a water outlet end, and the lower connector is connected with a water supply hose of the spray gun; the lower joint is movably connected to the lower end of the upper joint, and valve core mechanisms are arranged in the upper joint and the lower joint; when the spray head is used, the pulled water supply hose drives the lower joint to deviate and drives the valve core mechanism to open; when the water supply hose returns, the lower joint returns and drives the valve core mechanism to be closed. Compared with the prior art, the explosion-proof switch is opened through the valve core mechanism when the water supply hose is pulled, and the water supply hose is automatically closed after not returning, so that the risk of bursting of the water supply hose of the spray gun is greatly reduced.

Description

Autonomous explosion-proof switch of spray gun

Technical Field

The invention relates to the technical field of bathrooms, in particular to an autonomous explosion-proof switch of a spray gun.

Background

Often be provided with the spray gun in the bathroom, the water inlet of spray gun passes through spiral hose (water supply hose, generally spiral) lug connection in the exit end of wall body angle valve, and during the use, the user holds the spray gun shower nozzle, pulls spiral hose to wash bathroom angle, after finishing using, returns the shower nozzle to initial position.

Because of the high pressure that is maintained continuously in the coil, the coil hose is at risk of bursting, and therefore is often marked in the instructions for use of the gun, the angle valve needs to be closed after the gun has been used. But because of the trouble, the user often forgets to close the angle valve. At this time, the hose is communicated with a household water supply network, and the water hammer effect generated when other water-using equipment in the household is started and stopped is used for periodically impacting the spiral hose for a long time, so that the hose is easy to break, and indoor flooding is caused.

In view of this, the applicant has made intensive studies on the above-mentioned defects in the prior art.

Disclosure of Invention

The invention mainly aims to provide an autonomous explosion-proof switch of a spray gun, which has the characteristic of automatically disconnecting a water supply hose from a tap-water pipe network when the spray gun is not in use, so that the risk of flooding caused by breakage of the water supply hose is reduced.

In order to achieve the above object, the solution of the present invention is:

the automatic explosion-proof switch of the spray gun comprises an upper connector and a lower connector, wherein the upper connector is a water inlet end, the lower connector is a water outlet end, and the lower connector is connected with a water supply hose of the spray gun; the lower joint is movably connected to the lower end of the upper joint, and valve core mechanisms are arranged in the upper joint and the lower joint; when the spray head is used, the pulled water supply hose drives the lower joint to deviate and drives the valve core mechanism to open; when the water supply hose returns, the lower joint returns and drives the valve core mechanism to be closed.

Further, the valve core mechanism comprises a water stop rod, a compression spring and a bracket, and the bracket is fixedly arranged in the lower joint; the upper joint is internally provided with a conical through hole, the water stop rod comprises a rod part and a water stop head arranged at the upper end of the rod part, the water stop rod penetrates through the conical through hole, the upper end of the water stop head is provided with a compression spring, and the water stop head is propped against the conical through hole; the lower end of the rod part of the water stop rod is penetrated in a central hole on the bracket.

Further, a first sealing ring is arranged on the water stop head and is propped against the conical through hole.

Further, the upper end of the compression spring is provided with a gland, the gland is in threaded connection with the upper joint, and the center of the gland is provided with an inner hexagonal through hole.

Further, a swing joint is further connected between the upper joint and the lower joint, the outer wall of the upper end of the swing joint is in sealing connection with the inner wall of the upper joint, and the outer wall of the lower end of the swing joint is in sealing connection with the inner wall of the lower joint; the center of the swing joint is provided with a water passage.

Further, a second sealing ring is arranged on the outer wall of the upper end of the swing joint, and a third sealing ring is arranged on the outer wall of the lower end of the swing joint.

Further, a return spring is sleeved in the water passage of the swing joint and extends downwards into the inner cavity of the lower joint.

Further, the lower joint upper end is provided with the ectosphere, the upper joint lower extreme is provided with the interior sphere, the ectosphere with interior sphere cooperation is connected, the upper joint lower extreme still is provided with a plurality of steel ball that is located the ectosphere outside, the steel ball holds in the track groove of upper joint lower extreme.

Further, a placing hole communicated with the track groove is formed in the outer wall of the upper joint.

Further, an internal thread is arranged in the upper joint; the outer side of the lower joint is provided with external threads, the water supply hose is a spiral hose, and the water supply hose is connected with the external threads on the lower joint.

After the structure is adopted, the automatic explosion-proof switch of the spray gun has the following beneficial effects:

1. when the spray gun is used, the user holds the spray gun nozzle by hand, so that the water supply hose is pulled, the axis of the lower joint is deviated relative to the axis of the upper joint, and the valve core mechanism is driven to be opened. After the shower nozzle returns, the water supply hose naturally sags for the offset angle of lower clutch for the top connection reduces, and case mechanism closes, separates the rivers in the water supply hose and the family pipe network like this, reduces the water hammer effect and causes the destruction to the water supply hose.

2. The valve core mechanism is carried out in a mode of matching the water stop rod with the conical through hole, when the lower joint is deviated, the support deviates along with the deviation, the lower end of the rod part of the water stop rod is further driven to deviate, the water stop rod rotates around one side of the water stop head, and water flows out along a gap opened by the water stop head and the conical through hole. After the lower joint returns, the water stop rod is also corrected, and the compression spring supports the water stop head on the conical through hole.

3. Through setting up swing joint for the swing of lower clutch is more smooth and easy, also more convenient simultaneously seals, because second sealing washer and third sealing washer set up the inner chamber inboard at last joint and lower clutch, and the produced resistance moment of sealing washer is littleer, makes the lower clutch return better.

4. Through setting up reset spring, reset spring provides an extra return power, further makes the return of lower clutch more smooth and easy. The outer side of the outer spherical surface is provided with a plurality of steel balls, so that the lower joint can swing more flexibly, and the resistance is reduced.

Compared with the prior art, the explosion-proof switch is opened through the valve core mechanism when the water supply hose is pulled, and the water supply hose is automatically closed after not returning, so that the risk of bursting of the water supply hose of the spray gun is greatly reduced.

Drawings

Fig. 1 is a schematic diagram of the front view structure of an autonomous explosion-proof switch of a spray gun according to the present invention.

Fig. 2 is a schematic cross-sectional view of a simplified structure of the present invention.

Fig. 3 is a schematic cross-sectional view of the present invention.

Fig. 4 and 5 are schematic views of the exploded structure of the present invention at different angles.

Fig. 6 is a schematic view of the state of the spray gun when the spray gun is returned.

Fig. 7 is a schematic view of the spray gun in use.

Fig. 8 is an enlarged schematic view of the structure at a in fig. 7.

In the figure:

an upper joint 1; a tapered through hole 11; an inner spherical surface 12; a track groove 13; steel balls 131; a placement hole 132; an internal thread 14; a lower joint 2; an outer spherical surface 21; an external thread 22; a water supply hose 3; a shower head 31; a valve core mechanism; a water stop rod 41; a water stop 411; a stem portion 412; a first seal 413; a hold-down spring 42; a gland 43; an inner hexagonal through hole 431; a bracket 44; a central hole 441; clip spring 442; a swing joint 45; a second seal ring 451; a third seal 452; a return spring 46.

Detailed Description

In order to further explain the technical scheme of the invention, the invention is explained in detail by specific examples.

As shown in fig. 1 to 8, the automatic explosion-proof switch of the spray gun comprises an upper connector 1 and a lower connector 2, wherein the upper connector 1 is a water inlet end, the lower connector 2 is a water outlet end, and the lower connector 2 is connected with a water supply hose 3 of the spray gun; the lower joint 2 is movably connected to the lower end of the upper joint 1, and valve core mechanisms are arranged in the upper joint 1 and the lower joint 2; when the spray head 31 is used, the pulled water supply hose 3 drives the lower joint 2 to deviate and drives the valve core mechanism to open; when the water supply hose 3 returns, the lower joint 2 returns and drives the valve core mechanism to be closed.

Thus, when the automatic explosion-proof switch of the spray gun is used, the upper connector 1 is connected with a water outlet structure such as an angle valve, and the lower connector 2 is connected with the water supply hose 3, so that when the automatic explosion-proof switch is used, a user holds the spray gun spray head 31, pulls the water supply hose 3, the axis of the lower connector 2 deviates relative to the axis of the upper connector 1, and then drives the valve core mechanism to be opened, and water flow can flow to the spray head 31. After the spray head 31 returns, the water supply hose 3 naturally sags, so that the offset angle of the lower joint 2 relative to the upper joint 1 is reduced, the valve core mechanism is closed, water flow in the water supply hose 3 is isolated from a household pipe network, and damage to the water supply hose 3 caused by a water hammer effect is reduced.

Preferably, the valve core mechanism comprises a water stop rod 41, a compression spring 42 and a bracket 44, wherein the bracket 44 is fixedly arranged in the lower joint 2; a conical through hole 11 is formed in the upper joint 1, the water stop rod 41 comprises a rod part 412 and a water stop head 411 arranged at the upper end of the rod part 412, the water stop rod 41 penetrates through the conical through hole 11, a compression spring 42 is arranged at the upper end of the water stop head 411, and the water stop head 411 abuts against the conical through hole 11; the lower end of the rod part 412 of the water stop rod 41 is penetrated in the central hole 441 on the bracket 44. The valve core mechanism is carried out by adopting a mode that the water stop rod 41 is matched with the conical through hole 11, when the lower joint 2 is deviated, the bracket 44 is deviated along with the deviation, and then the lower end of the rod part 412 of the water stop rod 41 is driven to deviate, the water stop rod 41 rotates around one side of the water stop head 411, and water flows out along a gap opened by the water stop head 411 and the conical through hole 11. After the lower joint 2 returns, the water stop rod 41 also returns, and the compression spring 42 abuts the water stop head 411 against the tapered through hole 11.

Further, the bracket 44 may be a planar bracket 44 (as shown in fig. 2) or a three-dimensional bracket 44 (as shown in fig. 3) with a central arch. The bracket 44 is fixed on the lower joint 2 by a snap spring 442 to prevent the falling out.

Preferably, the water stop head 411 is provided with a first sealing ring 413, and the first sealing ring 413 abuts against the tapered through hole 11. The compression spring 42 provides a pressing force to the water stop head 411 toward the direction of the tapered through hole 11, so that the water stop head 411 can be smoothly returned. In order to facilitate the installation of the compression spring 42, preferably, a gland 43 is disposed at the upper end of the compression spring 42, the gland 43 is in threaded connection with the upper joint 1, and a hexagonal through hole 431 is disposed in the center of the gland 43. After the compression spring 42 is placed in the upper joint 1, the compression spring is in threaded connection with the upper joint 1 through the compression cover 43, so that the compression cover 43 is tightly installed. The hexagonal through hole 431 serves not only as a connection hole of the pressing cover 43 and the installation tool but also as a through hole through which water flows.

Preferably, a swing joint 45 is further connected between the upper joint 1 and the lower joint 2, an outer wall of an upper end of the swing joint 45 is in sealing connection with an inner wall of the upper joint 1, and an outer wall of a lower end of the swing joint 45 is in sealing connection with an inner wall of the lower joint 2; the center of the swing joint 45 is formed with a water passage. Further, a second sealing ring 451 is disposed on the outer wall of the upper end of the swing joint 45, and a third sealing ring 452 is disposed on the outer wall of the lower end of the swing joint 45. Through setting up swing joint 45 for the swing of lower clutch 2 is more smooth and easy, also more convenient simultaneously seals, because second sealing washer 451 and third sealing washer 452 set up the inner chamber inboard at upper clutch 1 and lower clutch 2, and the produced resistance moment of sealing washer is less, makes lower clutch 2 return better.

Preferably, a return spring 46 is sleeved in the water passage of the swing joint 45, and the return spring 46 extends downwards into the inner cavity of the lower joint 2. By providing the return spring 46, the return spring 46 provides an additional return force, further allowing for smoother return of the lower joint 2. The outer side of the outer spherical surface 21 is provided with a plurality of steel balls 131, so that the lower joint 2 can swing more flexibly, and the resistance is reduced.

Preferably, the upper end of the lower joint 2 is provided with an outer spherical surface 21, the lower end of the upper joint 1 is provided with an inner spherical surface 12, the outer spherical surface 21 is connected with the inner spherical surface 12 in a matched manner, the lower end of the upper joint 1 is further provided with a plurality of steel balls 131 positioned outside the outer spherical surface 21, and the steel balls 131 are accommodated in the track grooves 13 at the lower end of the upper joint 1. Further, in order to facilitate placement of the steel ball 131, a placement hole 132 is provided on the outer wall of the upper joint 1, which communicates with the track groove 13. Thus, the steel balls 131 are placed into the track grooves 13 through the placement holes 132, and after the steel balls 131 are placed, the placement holes 132 are plugged to prevent the steel balls 131 from falling out.

Preferably, the upper joint 1 is internally provided with internal threads 14; the outer side of the lower joint 2 is provided with external threads 22, the water supply hose 3 is a spiral hose, and the water supply hose 3 is connected with the external threads 22 on the lower joint 2. The water supply hose 3 is a spiral hose, so that the water supply hose 3 occupies a smaller space when not in use, and the water supply hose 3 can be stored more neatly.

Compared with the prior art, the explosion-proof switch is opened by the valve core mechanism when the water supply hose 3 is pulled, and the water supply hose 3 is automatically closed after not returning, so that the risk of bursting of the water supply hose 3 of the spray gun is greatly reduced.

The above examples and drawings are not intended to limit the form or form of the present invention, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present invention.

Claims

1. The automatic explosion-proof switch of the spray gun is characterized by comprising an upper connector and a lower connector, wherein the upper connector is a water inlet end, the lower connector is a water outlet end, and the lower connector is connected with a water supply hose of the spray gun; the lower joint is movably connected to the lower end of the upper joint, and valve core mechanisms are arranged in the upper joint and the lower joint; the valve core mechanism comprises a water stop rod, a compression spring and a bracket, and the bracket is fixedly arranged in the lower joint; the upper joint is internally provided with a conical through hole, the water stop rod comprises a rod part and a water stop head arranged at the upper end of the rod part, the water stop rod penetrates through the conical through hole, the upper end of the water stop head is provided with a compression spring, and the water stop head is propped against the conical through hole; the lower end of the rod part of the water stop rod is penetrated in a central hole on the bracket;

the valve core mechanism is carried out in a mode of matching a water stop rod with the conical through hole; when the spray gun spray head is used, the pulled water supply hose drives the lower joint to deviate, and the axis of the lower joint deviates relative to the axis of the upper joint; when the lower joint is deviated, the bracket is deviated along with the deviation, so that the lower end of the rod part of the water stop rod is driven to deviate, the water stop rod rotates around one side of the water stop head, and water flows out along a gap opened by the water stop head and the conical through hole, so that the valve core mechanism is driven to be opened; when the water supply hose returns, the water supply hose naturally sags, and the lower joint returns; after the lower joint returns, the water stop rod is also corrected, the compression spring supports the water stop head on the conical through hole, and the valve core mechanism is driven to be closed.

2. The autonomous explosion-proof switch of a spray gun according to claim 1, wherein a first sealing ring is arranged on the water stop head, and the first sealing ring is propped against the conical through hole.

3. The automatic explosion-proof switch of a spray gun according to claim 1, wherein a gland is arranged at the upper end of the compression spring, the gland is in threaded connection with the upper joint, and an inner hexagonal through hole is arranged in the center of the gland.

4. The autonomous explosion-proof switch of a spray gun according to claim 1, wherein a swing joint is further connected between the upper joint and the lower joint, the outer wall of the upper end of the swing joint is in sealing connection with the inner wall of the upper joint, and the outer wall of the lower end of the swing joint is in sealing connection with the inner wall of the lower joint; the center of the swing joint is provided with a water passage.

5. The autonomous explosion-proof switch of a spray gun according to claim 4, wherein a second sealing ring is arranged on the outer wall of the upper end of the swing joint, and a third sealing ring is arranged on the outer wall of the lower end of the swing joint.

6. The autonomous explosion-proof switch of a spray gun according to claim 4, wherein a return spring is sleeved in the water passage of the swing joint, and the return spring extends downwards into the inner cavity of the lower joint.

7. The autonomous explosion-proof switch of a spray gun according to claim 1, wherein the upper end of the lower joint is provided with an outer spherical surface, the lower end of the upper joint is provided with an inner spherical surface, the outer spherical surface is connected with the inner spherical surface in a matched manner, the lower end of the upper joint is further provided with a plurality of steel balls positioned outside the outer spherical surface, and the steel balls are accommodated in a track groove at the lower end of the upper joint.

8. An autonomous blast-resistant switch for a spray gun according to claim 7, wherein said upper joint has an outer wall provided with a placement hole communicating with said rail groove.

9. The autonomous blast-proof switch of spray gun according to claim 1, wherein said upper joint is internally provided with internal threads; the outer side of the lower joint is provided with external threads, the water supply hose is a spiral hose, and the water supply hose is connected with the external threads on the lower joint.