CN216689624U - Water inlet fitting quick assembly disassembly device of water tank - Google Patents

Abstract

A quick assembly disassembly device for a water inlet fitting of a water tank is connected between the water inlet fitting and the water tank and comprises a connector, a quick assembly mechanism and a locking piece, wherein the connector is detachably connected and communicated with the water inlet fitting; the quick assembly mechanism is provided with a base, a rotating piece, an elastic ring and a plurality of movable blocks; the base is sleeved outside the joint piece and is provided with a plurality of through holes; the movable blocks can penetrate through the corresponding through holes in a radial moving mode; the rotating piece is in transmission contact with the movable block and can be controlled to rotate to drive the movable block to move radially to separate from the first limiting groove; one end of the elastic ring is fixed with the rotating piece, and the other end of the elastic ring is fixed with the base to drive the rotating piece to return to drive the movable block to move radially and insert into the first limiting groove. The utility model is convenient to disassemble and assemble and is matched with most of the water inlet valves.

Description

Water inlet fitting quick assembly disassembly device of water tank

Technical Field

The utility model relates to the field of bathrooms, in particular to a device for quickly disassembling and assembling a water inlet fitting of a water tank.

Background

The existing water inlet valve is usually installed by firstly installing the water inlet valve into an installation hole of a water tank, enabling a threaded part of the water inlet valve to penetrate through the installation hole of the water tank, then screwing a nut on the outer part of the water tank into the threaded part of the water inlet valve until the threaded part is screwed, and then screwing a nut of a water supply pipe into the threaded part of the water inlet valve. However, referring to fig. 18 and 19, most of the toilets on the market are installed close to the wall, the space for connecting the water inlet pipe with the toilet water inlet fitting is small, a conventional wrench cannot be used, and the water inlet fitting cannot be disassembled and installed easily when the hose is replaced during maintenance. In addition, the wall surface of part of the pedestal pan is a straight surface, so that the water inlet valve accessories and the water inlet pipe can be detached only by detaching the pedestal pan during maintenance, and the maintenance is very inconvenient.

Therefore, a quick disassembly and assembly structure appears in the market, the mounting base is fixedly and hermetically connected to the mounting hole of the water tank, a water supply pipe outside the water tank penetrates through the jack of the mounting base from bottom to top to enter the water tank, then the water supply pipe is connected with the water inlet part of the water inlet valve, and then the water inlet part of the water inlet valve is connected to the mounting base; when the water supply pipe needs to be installed or replaced, the water inlet valve can be installed or detached in the water tank, and meanwhile, the water supply pipe is installed on the installation base or pulled out of the jack of the installation base. By adopting the structure, the water inlet valve can be detached or installed in the water tank, and the external water supply pipe of the water tank can also be detached or installed at the same time, so that the water inlet valve of the toilet water tank and the external water supply pipe connected with the water inlet valve can be maintained or replaced more conveniently and quickly.

However, with such a structure, when the water supply device is disassembled and assembled, the connection between the water inlet part and the water supply pipe needs to be unlocked and re-locked by manual operation, and the water supply device cannot be used for water inlet valves on the market and needs to be matched with a corresponding water inlet valve mechanism with the water inlet part.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to overcome the defect that the existing water inlet fittings are inconvenient to install, and provides a device for quickly disassembling and assembling the water inlet fittings of a water tank, which is convenient to disassemble and assemble and is matched with most of water inlet valves.

The utility model adopts the following technical scheme:

the utility model provides a water inlet fitting quick assembly disassembly device of water tank, connects between water inlet fitting and water tank, including connector, fast-assembling mechanism and locking part, this connector can dismantle with water inlet fitting and be connected and communicate, and this locking part detachably cover is located outside the fast-assembling mechanism in order to lock the fast-assembling mechanism lock solid water tank on its characterized in that: the joint piece is provided with a first limit groove; the quick assembly mechanism is provided with a base, a rotating piece, an elastic ring and a plurality of movable blocks; the base is sleeved outside the joint piece and is provided with a plurality of through holes; the movable blocks can penetrate through the corresponding through holes in a radial moving mode; the rotating piece is in transmission contact with the movable block and can be controlled to rotate to drive the movable block to move radially to separate from the first limiting groove; one end of the elastic ring is fixed with the rotating piece, and the other end of the elastic ring is fixed with the base to drive the rotating piece to return to drive the movable block to move radially to be inserted into the first limiting groove.

Preferably, the inner wall of the rotating part is provided with a plurality of elastic lock catches, the base is correspondingly provided with a plurality of locking bosses, the rotating part rotates to the time when the movable block breaks away from the first limiting groove, the elastic ring deforms, and the elastic lock catches move from one side of the locking bosses and limit to the other side to prevent the rotating part from returning.

Preferably, the joint piece is provided with a plurality of unlocking bosses; the base is correspondingly provided with a plurality of second limiting grooves for inserting corresponding unlocking bosses, and the second limiting grooves are positioned on one side of the locking bosses; when the joint piece is installed in the base, the unlocking boss pushes the elastic lock catch to enable the elastic lock catch to leave the other side of the locking boss so that the rotating piece returns to drive the movable block to move radially to be inserted into the first limiting groove.

Preferably, the elastic lock catch is provided with a first inclined plane, the other side of the locking boss is correspondingly provided with a second inclined plane, and the rotating part rotates until the first inclined plane contacts with the second inclined plane to drive the elastic lock catch to deform to cross the locking boss.

Preferably, the elastic ring is provided with a notch, two ends of the notch are respectively provided with a first positioning portion and a second positioning portion, the rotating member and the base are respectively provided with a first clamping groove and a second clamping groove correspondingly, the first positioning portion is clamped in the first clamping groove, and the second positioning portion is clamped in the second clamping groove.

Preferably, one side of the movable block is provided with a radially extending limiting part, and the limiting part is provided with a third inclined surface; the rotating part inner wall is provided with a plurality of first transmission bosses, the first transmission bosses are provided with third limiting grooves extending in the radial direction, the opening ends of the third limiting grooves are opposite to the corresponding limiting parts and are provided with fourth inclined planes, the rotating part rotates to the fourth inclined planes and the third inclined planes are in contact with each other to drive the limiting parts to be inserted into the corresponding third limiting grooves, and the movable blocks move in the radial direction to be separated from the first limiting grooves.

Preferably, a fifth inclined plane is arranged on the other side of the movable block; a plurality of second transmission bosses are arranged on the inner wall of the rotating piece, the second transmission bosses and the first transmission bosses are distributed in a staggered manner, and sixth inclined planes are correspondingly arranged on one sides, opposite to the fourth inclined planes, of the second transmission bosses; the rotating part rotates to a sixth inclined plane and contacts with the fifth inclined plane to drive the second transmission boss to push the corresponding movable block to move radially to be inserted into the first limiting groove, and the limiting part is separated from the corresponding third limiting groove.

Preferably, the base is provided with a plurality of rotating grooves, the rotating grooves extend along the circumferential direction, and the first transmission bosses are in sliding fit with the rotating grooves.

Preferably, the side wall of the rotating groove is provided with a guide groove extending radially, the through hole is formed in the inner wall of the rotating groove, and the movable block is provided with a lug which is limited in the guide groove.

Preferably, the joint piece is respectively provided with a first connecting part and a second connecting part; the water inlet fitting comprises a water inlet valve and a water inlet pipe, the water inlet valve is in threaded fit with the first connecting portion, and the water inlet pipe is in threaded fit with the second connecting portion.

As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:

1. according to the device, the connector is arranged to be connected with the water inlet fitting and provided with the first limiting groove, the quick assembly mechanism drives the movable block to move radially to be separated from the first limiting groove by controlling the rotation of the rotating piece, and the water inlet fitting can be assembled and disassembled; the movable block is driven to move radially to be inserted into the first limiting groove by the elastic ring to drive the rotating piece to return, the water tank can be disassembled and assembled, the operation is convenient, the water inlet valve does not need to be provided with a related matching structure independently, and most of the water inlet valve is matched.

2. According to the device, the inner wall of the rotating piece is provided with the elastic lock catch, the base is correspondingly provided with the locking boss, the rotating piece and the locking boss are matched by the inclined surface, when the rotating piece rotates until the movable block is separated from the first limiting groove, the elastic ring deforms, the elastic lock catch moves from one side of the locking boss and limits the locking boss to the other side to prevent the rotating piece from returning, namely, after the joint piece is detached from the base, the quick-assembly mechanism is still in an unlocking state, and the joint piece is convenient to re-assemble.

3. According to the device, the joint piece is provided with the unlocking boss, when the joint piece is installed in the base, the unlocking boss pushes the elastic lock catch to be separated from the other side of the locking boss, so that the rotating piece returns to drive the movable block to move radially and insert into the first limiting groove, and after the joint piece is installed, the movable block can automatically limit the joint piece to achieve quick installation, and the device is very convenient.

4. According to the device, the elastic ring is provided with the first positioning part and the second positioning part which are respectively clamped in the first clamping groove of the rotating piece and the second clamping groove of the base, the rotating piece can drive the elastic ring to deform when rotating, and the device is simple in structure and convenient to install.

5. According to the device, the inner wall of the rotating piece is provided with the first transmission boss and the second transmission boss so as to realize transmission contact with the movable block to lock or unlock the joint piece; the first transmission boss is provided with a third limiting groove, and when the rotating piece rotates until the movable block is separated from the first limiting groove, the limiting part is inserted into the corresponding third limiting groove, so that the unlocking state is maintained.

6. According to the device, the base is provided with the rotating groove, and the first transmission boss is in sliding fit with the rotating groove, so that the rotating piece is ensured to rotate more reliably and stably; in addition, the side wall of the rotating groove is provided with a guide groove extending in the radial direction, and the guide groove is used for limiting the movable block to enable the movable block to move more reliably and stably in the radial direction.

Drawings

FIG. 1 is an assembly view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a perspective view of the fitting;

FIG. 4 is a cross-sectional view of FIG. 3;

FIG. 5 is a view of the structure of the quick mount mechanism;

FIG. 6 is a view showing the construction of a torsion spring;

FIG. 7 is a diagram of a movable block;

FIG. 8 is a view showing the structure of an elastic ring;

FIG. 9 is a view showing the structure of the base;

FIG. 10 is a cross-sectional view of the present invention;

FIG. 11 is a cross-sectional view of the present invention (the movable block is inserted into the first limit groove);

FIG. 12 is a state diagram of the present invention (the movable block is inserted into the first position-limiting groove);

FIG. 13 is a cross-sectional view of the present invention (with the movable block disengaged from the first limit groove);

FIG. 14 is a state diagram of the present invention (the movable block is disengaged from the first limiting groove);

FIG. 15 is a state diagram of the present invention (the unlocking boss leaves the second limit groove);

FIG. 16 is a cross-sectional view of the present invention (the stop portion is clear of the third stop groove);

FIG. 17 is a state diagram of the present invention (unlocking boss pushing elastic latch);

FIG. 18 is a schematic view of a prior art toilet installation;

FIG. 19 is a schematic view of a prior art toilet bowl installation;

wherein:

10. the joint piece 11, the first connecting portion 12, the second connecting portion 13, the first limiting groove 14, the unlocking boss 20, the base 21, the through hole 22, the second limiting groove 23, the locking boss 24, the rotation groove 25, the baffle ring 26, the support ring 27, the second clamping groove 28, the second inclined surface 29, the guide groove 30, the rotation piece 31, the first transmission boss 32, the second transmission boss 33, the third limiting groove 34, the fourth inclined surface 35, the sixth inclined surface 36, the limiting block 37, the first clamping groove 38, the elastic lock catch 39, the first inclined surface 40, the elastic ring 41, the notch 42, the first positioning portion 43, the second positioning portion 50, the movable block 51, the projection 52, the limiting portion 53, the third inclined surface 54, the fifth inclined surface 60, the locking piece 70, the water tank 71, the water inlet valve 72, and the water inlet pipe.

Detailed Description

The utility model is further described below by means of specific embodiments.

The terms "first", "second", and the like in the present invention are merely for convenience of description to distinguish different constituent elements having the same name, and do not denote a sequential or primary-secondary relationship.

In the description of the present invention, the directions or positional relationships indicated by "upper", "lower", "left", "right", "front", and "rear", etc. are used as the directions or positional relationships indicated on the drawings, and are only for convenience of describing the present invention, and do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the scope of the present invention.

Referring to fig. 1 to 10, a quick-release device for a water inlet fitting of a water tank, which is connected between the water inlet fitting and a water tank 70, includes a joint member 10, a quick-release mechanism, a locking member 60, and the like. The fitting 10 is detachably connected to and communicates with a water inlet fitting. Wherein, the joint member 10 is respectively provided with a first connection portion 11 and a second connection portion 12, the first connection portion 11 may be provided with an internal thread, and the second connection portion 12 may be provided with an external thread. The water inlet fitting includes a water inlet valve 71 and a water inlet pipe 72, the water inlet valve 71 is screw-fitted to the first connection portion 11, and the water inlet pipe 72 is screw-fitted to the second connection portion 12. The locking member 60 is detachably sleeved outside the quick-assembly mechanism to lock the quick-assembly mechanism on the water tank 70, and the locking member 60 and the quick-assembly mechanism can be in threaded fit, for example, the locking member 60 is locked by nuts, gaskets and the like.

Further, the joint member 10 is provided with a first limit groove 13 and a plurality of unlocking bosses 14. The first limiting groove 13 is a ring groove extending along the circumferential direction of the joint 10, or a plurality of grooves distributed along the circumferential direction. The unlocking bosses 14 are located on the periphery of the top of the joint 10 and distributed at intervals along the circumferential direction, and the unlocking bosses 14 are radially outward convex and used for unlocking components in the quick assembly mechanism.

The quick-assembling mechanism is provided with a base 20, a rotating piece 30, an elastic ring 40, a plurality of movable blocks 50 and the like. The base 20 is sleeved outside the joint 10 and has a plurality of through holes 21, a plurality of second limiting grooves 22, a plurality of locking bosses 23, a plurality of rotating grooves 24, and the like, wherein the plurality of through holes 21 are radially through and are communicated with the first limiting grooves 13. The second limiting grooves 22 may be located at the top of the base 20 and extend axially from the top surface of the base 20, the number of the second limiting grooves 22 corresponds to the number of the unlocking bosses 14, and when the joint 10 is installed in the base 20, the unlocking bosses 14 may be inserted into the second limiting grooves 22 in a one-to-one correspondence manner.

The locking bosses 23 are used for locking the rotating member 30, are located on the periphery of the base 20 and circumferentially distributed at intervals, the number of the locking bosses 23 can correspond to the number of the second limiting grooves 22, and the locking bosses 23 are located on one side of the corresponding second limiting grooves 22. The plurality of rotating grooves 24 are located below the locking boss 23 and are distributed at intervals along the circumferential direction, each rotating groove 24 extends along the circumferential direction, the side wall of each rotating groove 24 is provided with a guide groove 29 extending along the radial direction, and the through holes 21 are formed in the inner wall of each rotating groove 24.

The movable blocks 50 can be movably inserted into the corresponding through holes 21 in the radial direction, that is, the number of the movable blocks 50 corresponds to the number of the through holes 21, and one end of the movable block 50, which is opposite to the joint piece 10, can be inserted into the first limiting groove 13 to limit the joint piece 10. In order to ensure that the movable block 50 moves radially, the movable block 50 is provided with a projection 51, and the projection 51 is limited in the guide groove 29, namely, when the movable block 50 moves, the projection 51 moves along the guide groove 29.

Further, one side of the other end of the movable block 50 is further provided with a radially extending limiting portion 52, and the limiting portion 52 is located outside the through hole 21 and is provided with a third inclined surface 53; the other side of the other end of the movable block 50 is also provided with a fifth inclined surface 54.

The rotating member 30 is in driving contact with the movable block 50 and can be operated to rotate to drive the movable block 50 to move radially away from the first limiting groove 13. Specifically, the rotating member 30 is annular and is sleeved outside the base 20, and the inner wall thereof is provided with a plurality of first transmission bosses 31 and a plurality of second transmission bosses 32. The rotary member 30 is brought into driving contact with the movable block 50 through a plurality of first and second driving protrusions 31 and 32.

Further, the first transmission bosses 31 are in one-to-one sliding fit with the rotation grooves 24, that is, when the rotation member 30 rotates, the first transmission bosses 31 can slide along the corresponding rotation grooves 24. The first transmission boss 31 is provided with a third limiting groove 33 extending radially, the opening end of the third limiting groove 33 is opposite to the limiting part 52 of the corresponding movable block 50 and is provided with a fourth inclined surface 34, the rotating member 30 rotates until the fourth inclined surface 34 contacts with the third inclined surface 53 of the movable block 50, and the limiting part 52 is driven to be inserted into the corresponding third limiting groove 33 due to the inclined surface action and the movable block 50 moves radially to be separated from the first limiting groove 13.

Further, the plurality of second transmission bosses 32 and the plurality of first transmission bosses 31 are distributed in a staggered manner, that is, the first transmission bosses 31 are located between two adjacent second transmission bosses 32, and the second transmission bosses 32 are located between two adjacent first transmission bosses 31. A sixth inclined surface 35 is further arranged on one side of the second transmission boss 32 opposite to the fourth inclined surface 34; when the rotating member 30 rotates to the position where the sixth inclined surface 35 contacts the fifth inclined surface 54, the second transmission boss 32 pushes the corresponding movable block 50 to move radially and insert into the first limiting groove 13, and the limiting portion 52 is separated from the corresponding third limiting groove 33.

Further, the inner wall of the rotating member 30 is further provided with a plurality of limiting blocks 36, the limiting blocks 36 can be located at positions close to the bottom of the inner wall of the rotating member 30 and extend along the radial direction, the base 20 is provided with a retaining ring 25, and the retaining ring 25 is located below the rotating groove 24. The axial limit is realized by the limit block 36 abutting against the bottom surface of the baffle ring 25. The number of the limiting blocks 36 can be set according to actual conditions, and can be two, three, four or more, and preferably four.

The elastic ring 40 has one end fixed to the rotating member 30 and the other end fixed to the base 20, the base 20 may be provided with a supporting ring 26 for placing the elastic ring 40, and the rotating member 30 may be located above the elastic ring 40. Specifically, the elastic ring 40 has a notch 41, two ends of the notch 41 are respectively provided with a first positioning portion 42 and a second positioning portion 43, the rotating member 30 and the base 20 are respectively provided with a first engaging groove 37 and a second engaging groove 27, the first positioning portion 42 is engaged with the first engaging groove 37, the second positioning portion 43 is engaged with the second engaging groove 27, and when the rotating member 30 rotates, the first positioning portion 42 of the elastic ring 40 can move along with the rotating member 30. And the second transmission boss 32 of the rotating member 30 is configured to drive the movable block 50 to be inserted into the first limit groove 13, the distance between the first positioning portion 42 and the second positioning portion 43 of the elastic ring 40 is the largest, when the rotating member 30 rotates to the first transmission stage to drive the movable block 50 to be separated from the first limit groove 13, the elastic ring 40 deforms, the notch 41 of the elastic ring becomes smaller, and the distance between the first positioning portion 42 and the second positioning portion 43 is the smallest. The elastic ring 40 can drive the rotating member 30 to return to drive the movable block 50 to move radially to insert into the first limiting groove 13 when returning.

Further, the rotating member 30 is further provided with a plurality of elastic latches 38, and the elastic latches 38 are located on the top of the inner wall of the rotating member 30 and are used for locking the deformation state of the rotating member 30 by cooperating with the locking bosses 23 to prevent the rotating member from returning. The number of the elastic latches 38 corresponds to the number of the locking bosses 23, and the elastic latches 38 are located at one side of the locking bosses 23. When the rotating member 30 rotates to the first limiting groove 13 where the movable block 50 is disengaged, the elastic ring 40 is deformed and the elastic locking buckle 38 moves from one side of the locking boss 23 and limits to the other side to prevent the rotating member 30 from returning. At this time, the socket 10 can be detached from the base 20.

Further, the elastic latch 38 is provided with a first inclined surface 39, one side of the locking boss 23 is correspondingly provided with a second inclined surface 28, and the rotating member 30 rotates until the first inclined surface 39 contacts with the second inclined surface 28 to drive the elastic latch 38 to deform to pass over the locking boss 23. At this time, since the unlocking boss 14 is located at the other side of the locking boss 23, the elastic catch 38 may abut against the unlocking boss 14. When the socket 10 is removed from the base 20, the resilient latch 38 can abut against the other side of the locking projection 23. If the connector 10 is installed into the base 20 again, the unlocking boss 14 pushes the elastic locking catch 38 to leave the other side of the locking boss 23 for unlocking, and the rotating member 30 can be rotated to drive the movable block 50 to move radially to be inserted into the first limiting groove 13.

The number of the movable blocks 50 of the device of the present invention can be set according to the requirement, and can be two, three or even four, and preferably four, and the number of the first transmission bosses 31, the second transmission bosses 32 and the rotation grooves 24 can correspond to the number of the movable blocks 50. The number of the locking bosses 23, the unlocking bosses 14 and the elastic latches 38 corresponds to that of the locking bosses, and can be two, three or even four, and preferably four. The working principle is as follows:

referring to the installation states of fig. 1, 10-12, the connector 10 is connected to the water inlet valve 71 and the water inlet pipe 72, respectively, the quick-assembly mechanism is sleeved outside the connector 10 and is locked to the water tank 70 by the locking member 60, at this time, the second transmission boss 32 of the rotating member 30 is located at one end of the movable block 50 opposite to the rotating member 30 and drives the other end of the movable block 50 to be inserted into the first limiting groove 13, so that the connector 10 cannot be removed from the base 20 in an axial movement manner; the unlocking boss 14 of the joint element 10 is inserted into the second limiting groove 22, the elastic lock catch 38 is positioned at one side of the locking boss 23, and the elastic ring 40 is in a natural state and is not deformed.

Referring to fig. 13 and 14, when the water inlet fitting is to be disassembled, the water inlet pipe 72 can be disassembled first, and then the rotating member 30 is operated to rotate counterclockwise, when the fourth inclined surface 34 of the first transmission boss 31 contacts with the third inclined surface 53 of the movable block 50 until the limiting part 52 is inserted into the corresponding third limiting groove 33, the movable block 50 moves radially to be separated from the first limiting groove 13, and simultaneously, the first inclined surface 39 of the elastic latch 38 contacts with the second inclined surface 28 of the locking boss 23 until the elastic latch 38 crosses the locking boss 23 to move from one side of the locking boss 23 and limit to the other side, the elastic ring 40 deforms, and the elastic latch 38 abuts against the unlocking boss 14 to prevent the rotating member 30 from returning; at this point, the adapter 10 may be removed from the base 20, and the fill valve 71 may be removed, as shown in FIG. 15.

When the water inlet fitting is to be installed again, the adapter 10 and the water inlet valve 71 are assembled and then directly aligned with the base 20 to be inserted, the unlocking boss 14 pushes the elastic lock catch 38 downwards to leave the other side of the locking boss 23 to realize unlocking, and under the action of the elastic ring 40 returning, the rotary member 30 can return to drive the movable block 50 to radially move to be inserted into the first limiting groove 13 to realize quick installation, and referring to fig. 16 and 17, the water inlet pipe 72 is installed again, namely, the installation state is returned.

The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.

Claims (10)

1. The utility model provides a water inlet fitting quick assembly disassembly device of water tank, connects between water inlet fitting and water tank, including connector, fast-assembling mechanism and locking part, this connector can dismantle with water inlet fitting and be connected and communicate, and this locking part detachably cover is located outside the fast-assembling mechanism in order to lock the fast-assembling mechanism lock solid water tank on its characterized in that: the joint piece is provided with a first limit groove; the quick assembly mechanism is provided with a base, a rotating piece, an elastic ring and a plurality of movable blocks; the base is sleeved outside the joint piece and is provided with a plurality of through holes; the movable blocks can penetrate through the corresponding through holes in a radial moving mode; the rotating piece is in transmission contact with the movable block and can be controlled to rotate to drive the movable block to move radially to separate from the first limiting groove; one end of the elastic ring is fixed with the rotating piece, and the other end of the elastic ring is fixed with the base to drive the rotating piece to return to drive the movable block to move radially to be inserted into the first limiting groove.

2. A water inlet fitting quick release assembly as claimed in claim 1, wherein: the inner wall of the rotating part is provided with a plurality of elastic lock catches, the base is correspondingly provided with a plurality of locking bosses, the rotating part rotates to when the movable block breaks away from the first limiting groove, the elastic ring deforms, and the elastic lock catches move from one side of the locking bosses and limit to the other side to prevent the rotating part from returning.

3. A water inlet fitting quick-release device for a water tank as claimed in claim 2, wherein: the joint piece is provided with a plurality of unlocking bosses; the base is correspondingly provided with a plurality of second limiting grooves for inserting corresponding unlocking bosses, and the second limiting grooves are positioned on one side of the locking bosses; when the joint piece is installed in the base, the unlocking boss pushes the elastic lock catch to enable the elastic lock catch to leave the other side of the locking boss so that the rotating piece returns to drive the movable block to move radially to be inserted into the first limiting groove.

4. A water inlet fitting quick release assembly as claimed in claim 2, wherein: the elastic lock catch is provided with a first inclined plane, the other side of the locking boss is correspondingly provided with a second inclined plane, and the rotating piece rotates to the first inclined plane to be in contact with the second inclined plane to drive the elastic lock catch to deform to cross over the locking boss.

5. A water inlet fitting quick release assembly as claimed in claim 1, wherein: the elastic ring is provided with a notch, a first positioning part and a second positioning part are respectively arranged at two ends of the notch, the rotating part and the base are respectively and correspondingly provided with a first clamping groove and a second clamping groove, the first positioning part is clamped in the first clamping groove, and the second positioning part is clamped in the second clamping groove.

6. A water inlet fitting quick release assembly as claimed in claim 1, wherein: one side of the movable block is provided with a radially extending limiting part, and the limiting part is provided with a third inclined surface; the inner wall of the rotating part is provided with a plurality of first transmission bosses, the first transmission bosses are provided with third limiting grooves extending in the radial direction, the opening ends of the third limiting grooves are opposite to the corresponding limiting parts and are provided with fourth inclined planes, the rotating part rotates to the fourth inclined planes and the third inclined planes are in contact with each other to drive the limiting parts to be inserted into the corresponding third limiting grooves, and the movable blocks move radially to be separated from the first limiting grooves.

7. A water inlet fitting quick release assembly as claimed in claim 6, wherein: a fifth inclined plane is arranged on the other side of the movable block; a plurality of second transmission bosses are arranged on the inner wall of the rotating part, the second transmission bosses and the first transmission bosses are distributed in a staggered manner, and sixth inclined planes are correspondingly arranged on one sides of the second transmission bosses relative to the fourth inclined planes; the rotating part rotates to a sixth inclined plane and contacts with the fifth inclined plane to drive the second transmission boss to push the corresponding movable block to move radially to be inserted into the first limiting groove, and the limiting part is separated from the corresponding third limiting groove.

8. A water inlet fitting quick release assembly as claimed in claim 6, wherein: the base is provided with a plurality of rotating grooves which extend along the circumferential direction, and the first transmission boss is in sliding fit with the rotating grooves.

9. A water inlet fitting quick release assembly as claimed in claim 8, wherein: the side wall of the rotating groove is provided with a guide groove extending in the radial direction, the through hole is formed in the inner wall of the rotating groove, and the movable block is provided with a lug which is limited in the guide groove.

10. A water inlet fitting quick release assembly as claimed in claim 1, wherein: the joint piece is respectively provided with a first connecting part and a second connecting part; the water inlet fitting comprises a water inlet valve and a water inlet pipe, the water inlet valve is in threaded fit with the first connecting portion, and the water inlet pipe is in threaded fit with the second connecting portion.

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