Water inlet valve

Abstract

The utility model discloses a water inlet valve which comprises a water inlet valve body and a buoy assembly, the buoy assembly is provided with a connecting sleeve arranged outside the water inlet valve body in a sleeved mode, and a separable axial multi-stage positioning structure is arranged between the connecting sleeve and the water inlet valve body in a matched mode. The connecting sleeve is provided with an elastic buckle, a rotation stopping part is arranged on the peripheral wall of the water inlet valve body, the connecting sleeve rotates around the axis of the connecting sleeve so that the elastic buckle of the connecting sleeve can be clamped with or separated from the rotation stopping part, and in the separation state, the buoy assembly can slide in the axial direction of the water inlet valve body. And in the clamping state, rotation stopping and limiting are achieved on the connecting sleeve, and axial positioning is achieved through an axial multi-stage positioning structure matched between the connecting sleeve and the water inlet valve body. According to the utility model, the disassembly and the height adjustment of the buoy assembly can be realized by directly utilizing the structure between the connecting sleeve and the water inlet valve main body, so that the number of parts is obviously reduced, the production cost is effectively reduced, and the disassembly and assembly process of the attached map assembly is greatly simplified.

Description

Technical Field

[0001] This utility model relates to the field of sanitary ware, and in particular to a water inlet valve. Background Technology

[0002] The inlet valve of a toilet tank is a core component for controlling the water level. Its working pressure is controlled by the buoyancy of the float assembly, which drives the valve core on the main body to open and close, thus controlling the water flow into the tank. Traditional inlet valves have significant design limitations: the height of the float assembly is fixed, making it difficult for the same model of inlet valve to be compatible with different tank sizes. In practical applications, due to significant differences in tank height among different toilet products, this fixed-height design severely limits the versatility of the inlet valve. To overcome this technical bottleneck, the industry has developed height-adjustable inlet valves. A typical structure of these improved products uses clips or pins to achieve float assembly height adjustment. However, this design has the following drawbacks: numerous parts, complex installation process, and inconvenience for users. Utility Model Content

[0003] This utility model addresses the technical problems existing in the prior art by providing a water inlet valve.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a water inlet valve, including a water inlet valve body and a float assembly, the float assembly is provided with a connecting sleeve sleeved outside the water inlet valve body, the connecting sleeve and the water inlet valve body are fitted with a separable axial multi-stage positioning structure; the connecting sleeve is provided with an elastic buckle, the outer peripheral wall of the water inlet valve body is provided with an anti-rotation part, the connecting sleeve rotates around its axis to make its elastic buckle engage or disengage with the anti-rotation part, and in the disengaged state, the float assembly can slide along the axial direction of the water inlet valve body, and in the engaged state, it achieves anti-rotation and limiting of the connecting sleeve, and the connecting sleeve achieves axial positioning through the axial multi-stage positioning structure that engages with the water inlet valve body.

[0005] In a preferred embodiment, the axial multi-stage positioning structure includes a plurality of positioning bosses arranged axially at intervals on the outer peripheral wall of the inlet valve body, and a locking block disposed on the inner peripheral wall of the connecting sleeve. When the connecting sleeve is in the axial positioning state, the locking block is engaged between two adjacent positioning bosses.

[0006] In a preferred embodiment, the outer peripheral wall of the water inlet valve body is further provided with a plurality of pre-installed protrusions arranged at intervals along its axial direction. The plurality of pre-installed protrusions are arranged adjacent to the anti-rotation part in the circumferential direction of the water inlet valve body. Each positioning boss corresponds to a pre-installed protrusion, and each positioning boss is aligned with the corresponding pre-installed protrusion in the circumferential direction of the water inlet valve body. In the state where the elastic buckle is separated from the anti-rotation part, the elastic buckle can switch positions up and down to lock between adjacent pre-installed protrusions.

[0007] In a preferred embodiment, the pre-installed protrusion is rib-shaped and extends circumferentially along the body of the inlet valve.

[0008] In a preferred embodiment, the anti-rotation portion is elongated and extends along the axial direction of the inlet valve body.

[0009] In a preferred embodiment, the anti-rotation portion includes two anti-rotation ribs arranged in parallel, both of which extend along the axial direction of the water inlet valve body, and an anti-rotation groove is formed between the two anti-rotation ribs for engaging with the elastic snap.

[0010] In a preferred embodiment, the elastic buckle is integrally formed with the connecting sleeve, and includes an upwardly extending elastic arm and a retaining portion disposed at the upper end of the elastic arm.

[0011] In a preferred embodiment, the retaining portion is provided with a chamfer or rounded corner to provide guidance when the elastic buckle is engaged; the retaining portion is provided with a handle on the side away from the water inlet valve body for separation operation after engagement.

[0012] In a preferred embodiment, the lower end of the elastic arm is disposed within a clearance notch opened at the upper end of the connecting sleeve, and there are gaps between the two sides of the elastic arm and the two side walls opposite to the clearance notch, so as to allow the elastic arm to undergo elastic deformation during the snap-fit ​​process.

[0013] In a preferred embodiment, the axial multi-stage positioning structure is configured as multiple groups, and the multiple groups of the axial multi-stage positioning structure are arranged at intervals along the circumference of the water inlet valve body.

[0014] In a preferred embodiment, the float assembly includes an outer float, an inner float, and a one-way valve. The connecting sleeve is disposed on the outer float, and the inner float is disposed vertically within a water storage cavity disposed inside the outer float. The water storage cavity has an inlet and outlet at its bottom. The one-way valve is movably disposed at the inlet and outlet and closes the inlet and outlet by buoyancy when the water level rises. The inner float is movably connected to a lifting rod disposed on the top of the inlet valve body via a connecting rod, and the inner float and the connecting rod are detachably connected.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This utility model achieves convenient height adjustment of the float assembly by cleverly designing the elastic buckle and anti-rotation part. This design eliminates the need for additional connecting parts such as clips and pins commonly used in traditional structures, thus significantly reducing the number of parts. This not only effectively reduces production costs but also greatly simplifies the assembly and disassembly process, making float assembly adjustment quick and easy, and greatly improving the user experience.

[0017] 2. This utility model further provides multiple pre-installed protrusions on the outer peripheral wall of the inlet valve body. These pre-installed protrusions provide intuitive positioning references during installation, making the installation position of the float assembly more accurate. This design allows users to complete the initial assembly of the float assembly more quickly, thereby significantly improving the convenience of the adjustment process.

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the water inlet valve of the present invention is not limited to the embodiments. Attached Figure Description

[0019] Figure 1 This is an exploded view of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention in the pre-assembled state of the float assembly;

[0021] Figure 3 yes Figure 2 A sectional view;

[0022] Figure 4 yes Figure 3 AA section view;

[0023] Figure 5 yes Figure 3 Enlarged schematic diagram of part B in the middle;

[0024] Figure 6 yes Figure 5 An enlarged schematic diagram of section C;

[0025] Figure 7 This is a three-dimensional structural diagram of the present invention in the positioning state of the float assembly;

[0026] Figure 8 yes Figure 7 A sectional view;

[0027] Figure 9 yes Figure 7 DD sectional view;

[0028] Figure 10 yes Figure 7 An enlarged schematic diagram of section E in the middle;

[0029] Figure 11 yes Figure 8 Enlarged schematic diagram of section F in the middle;

[0030] Figure 12 This is a schematic diagram of the installation of the float assembly of this utility model. Figure 1 ;

[0031] Figure 13 This is a schematic diagram of the installation of the float assembly of this utility model. Figure 2 ;

[0032] Figure 14 This is a schematic diagram of the installation of the float assembly of this utility model. Figure 3 ;

[0033] Figure 15 This is a schematic diagram of the installation of the float assembly of this utility model. Figure 4 ;

[0034] Figure 16 This is a disassembly diagram of the float assembly of this utility model. Figure 1 ;

[0035] Figure 17 This is a disassembly diagram of the float assembly of this utility model. Figure 2 ;

[0036] Figure 18 This is a disassembly diagram of the float assembly of this utility model. Figure 3 ;

[0037] In the diagram, 1. Inlet valve body; 11. Positioning boss; 12. Pre-installed protrusion; 13. Anti-rotation rib; 14. Anti-rotation groove; 2. Connecting sleeve; 21. Elastic buckle; 211. Elastic arm; 212. Holding part; 213. Handle part; 22. Locking block; 23. Clearance notch; 3. Outer float; 31. Water storage chamber; 32. Inlet and outlet; 4. Inner float; 41. Locking groove; 411. First locking rib; 5. Check valve; 6. Connecting rod; 61. Second locking rib; 611. Cutting surface; 7. Lifting rod. Detailed Implementation

[0038] Please see Figures 1-18As shown, this utility model discloses a water inlet valve, including a water inlet valve body 1 and a float assembly. The float assembly has a connecting sleeve 2 sleeved on the outside of the water inlet valve body 1. The connecting sleeve 2 and the water inlet valve body 1 are fitted with a separable axial multi-stage positioning structure. The connecting sleeve 2 has an elastic buckle 21, and the outer peripheral wall of the water inlet valve body 1 has an anti-rotation part. The connecting sleeve 2 rotates around its axis to engage or disengage the elastic buckle 21 with the anti-rotation part. In the disengaged state, the float assembly can slide along the axial direction of the water inlet valve body 1 to facilitate height adjustment. In the engaged state, it prevents rotation and limits the connecting sleeve 2. The connecting sleeve 2 is axially positioned by the axial multi-stage positioning structure that engages with the water inlet valve body 1. The axial direction refers to the height direction and the vertical direction.

[0039] In a preferred embodiment of this utility model, the axial multi-stage positioning structure includes a plurality of positioning bosses 11 arranged axially at intervals along the outer peripheral wall of the inlet valve body 1, and a locking block 22 disposed on the inner peripheral wall of the connecting sleeve 2. When the connecting sleeve 2 is in an axially positioned state, the locking block 22 reliably engages between two adjacent positioning bosses 11, forming a stable axial positioning. As an equivalent alternative embodiment of this preferred embodiment, the axial multi-stage positioning structure can also adopt a reverse design: a plurality of axially arranged positioning grooves are provided on the outer peripheral wall of the inlet valve body 1, and corresponding locking blocks 22 are provided on the inner peripheral wall of the connecting sleeve 2. In this alternative solution, when the connecting sleeve 2 is positioned, the locking block 22 is precisely embedded in any selected positioning groove, achieving the same axial positioning effect.

[0040] In a preferred embodiment of this utility model, the above-mentioned axial multi-stage positioning structure is configured as multiple sets and arranged at intervals along the circumference of the inlet valve body 1. Specifically, this embodiment adopts two sets of axial positioning structures, which are symmetrically distributed at 180° on opposite sides of the outer peripheral wall of the inlet valve body 1, forming a balanced positioning layout.

[0041] In a preferred embodiment of this utility model, the outer peripheral wall of the inlet valve body 1 is further provided with a plurality of pre-installed protrusions 12 arranged at intervals along its axial direction. These pre-installed protrusions 12 are adjacent to the anti-rotation portion in the circumferential direction of the inlet valve body 1. Preferably, the pre-installed protrusions 12 are rib-shaped and extend circumferentially along the inlet valve body 1. Each positioning boss 11 corresponds to one pre-installed protrusion 12, and each positioning boss 11 is aligned with its corresponding pre-installed protrusion 12 in the circumferential direction of the inlet valve body 1. When the elastic buckle 21 is separated from the anti-rotation portion, the elastic buckle 21 can be switched up and down between adjacent pre-installed protrusions 12. Therefore, when the height of the float assembly needs to be adjusted, when the elastic buckle 21 is separated from the anti-rotation portion, the operator can easily switch the elastic buckle 21 between adjacent pre-installed protrusions 12 to achieve rapid pre-installation positioning. The pre-installed protrusion 12 allows for temporary position pre-selection before final positioning, greatly improving the convenience and user experience during the adjustment process.

[0042] In a preferred embodiment of this utility model, the anti-rotation part is elongated and extends along the axial direction of the inlet valve body 1. Preferably, the anti-rotation part includes two parallel anti-rotation ribs 13, both of which extend along the axial direction of the inlet valve body 1, and an anti-rotation groove 14 is formed between the two anti-rotation ribs 13 for engaging with the elastic buckle 21. As an equivalent alternative embodiment of this preferred embodiment, the anti-rotation part can also adopt a reverse design: an axially extending anti-rotation groove is provided on the outer peripheral wall of the inlet valve body 1. In this alternative, the elastic buckle 21 achieves the same axial anti-rotation effect by engaging into the anti-rotation groove. The anti-rotation ribs 13 or the anti-rotation groove can also be non-continuous, but intermittent, as long as they correspond one-to-one with the axial positioning level of the float assembly.

[0043] In a preferred embodiment of this utility model, the elastic buckle 21 and the connecting sleeve 2 are integrally formed. Specifically, the elastic buckle 21 includes an upwardly extending elastic arm 211 and a retaining portion 212 disposed at the upper end of the elastic arm 211. The upper and lower edges of the retaining portion 212 are respectively provided with chamfers or rounded corners to provide guidance when the elastic buckle 21 is engaged. Furthermore, a handle portion 213 is provided on the side of the retaining portion 212 away from the water inlet valve body 1 for the separation operation after engagement.

[0044] The lower end of the aforementioned elastic arm 211 is located within the clearance notch 23 at the upper end of the connecting sleeve 2, and there are gaps between the two sides of the elastic arm 211 and the side walls opposite to the clearance notch 23, so as to allow the elastic arm 211 to elastically deform during the snap-fit ​​process. By placing the elastic arm 211 within the clearance notch 23 of the connecting sleeve 2, the space occupied by the elastic arm 211 in the height direction can be reduced.

[0045] The float assembly specifically includes an outer float 3, an inner float 4, and a one-way valve 5. A connecting sleeve 2 is mounted on the outer float 3, and specifically, the connecting sleeve 2 and the outer float 3 are integrally formed. The inner float 4 is movably mounted within a water storage chamber 31 located inside the outer float 3. The water storage chamber 31 has inlet and outlet ports 32 at its bottom. The one-way valve 5 is movably mounted at the inlet and outlet ports 32 and closes the inlet and outlet ports 32 by buoyancy when the water level rises. The inner float 4 is movably connected to a lifting rod 7 located at the top of the inlet valve body 1 via a connecting rod 6, and the inner float 4 and the connecting rod 6 are detachably connected. In a preferred embodiment, the inner float 4 has an exposed connecting portion on its side. A slot 41 is formed on the outer side of the connecting portion, and a first locking rib 411 is provided in the slot 41. The connecting rod 6 has a plurality of second locking ribs 61 arranged at intervals along its axial direction. Each second locking rib 61 is annular, and each has a cutting surface 611 facing away from it. The upper end of the connecting rod 6 is connected to the lifting rod 7 through a movable joint, so that the connecting rod 6 can rotate around its own axis by a preset angle. During installation, the connecting rod 6 is first inserted laterally into the slot 41, and then rotated by a preset angle (e.g., 90°) so that the two adjacent second locking ribs 61 on the connecting rod 6 form a stable locking connection with the first locking rib 411. During disassembly, the connecting rod 6 is rotated in the opposite direction, and the cutting surface 611 on the second locking rib 61 provides clearance, so that the connecting rod 6 can be removed from the slot 41. It should be noted that the detachable connection between the inner float 4 and the connecting rod 6 is not limited to the specific structure described above. In other embodiments, detachable connection methods such as snap-fit ​​connection, threaded connection, or quick-release pin can be used.

[0046] The installation process of the float assembly of the water inlet valve of this utility model is as follows:

[0047] First, slide the connecting sleeve 2 of the float assembly onto the outside of the inlet valve body 1 from bottom to top, and position the elastic buckle 21 on the connecting sleeve 2 directly below the pre-installed protrusion 12, as shown. Figure 12 As shown; next, select two pre-installed protrusions 12 that are basically corresponding to and adjacent to the required installation height of the float assembly, slide the float assembly upward, so that the retaining part 212 of the elastic buckle 21 is engaged between the two selected pre-installed protrusions 12, as shown. Figure 13 As shown; then, rotate the float assembly clockwise so that the retaining part 212 of the elastic buckle 21 engages with the anti-rotation groove 14 formed between the two anti-rotation ribs 13, as shown. Figure 14 , Figure 15 As shown, simultaneously, the locking block 22 on the inner circumferential wall of the connecting sleeve 2 also rotates between two adjacent positioning bosses 11 on the outer circumferential wall of the inlet valve body 1, thereby forming a stable axial positioning for the float assembly. Finally, the connecting rod 6 is connected to the inner float 4 using the above connection method, thereby completing the installation of the entire float assembly.

[0048] The disassembly process of the float assembly of the water inlet valve of this utility model is as follows:

[0049] First, such as Figure 16 As shown, rotate connecting rod 6 90° to disengage it from the slot 41 of the inner float 4; then, pull the elastic buckle 21 outward to disengage it from the anti-rotation slot 14, while simultaneously rotating the entire float assembly counterclockwise, as shown. Figure 17 As shown, the locking block 22 on the inner peripheral wall of the connecting sleeve 2 rotates out between two adjacent positioning protrusions 11 on the outer peripheral wall of the inlet valve body 1. At this time, the holding part 212 of the elastic buckle 21 engages between two adjacent pre-installed protrusions 12, as shown. Figure 18 As shown, in this state, the height can be adjusted by sliding the entire float assembly up or down, or the float assembly can be removed from the inlet valve body 1 by sliding it down.

[0050] Therefore, the inlet valve of this utility model can directly realize the disassembly and height adjustment of the float assembly by utilizing the structure between the connecting sleeve 2 and the main body 1 of the inlet valve. This eliminates the need for additional connecting parts such as clips and pins commonly used in traditional structures, thus significantly reducing the number of parts. This not only effectively reduces production costs but also greatly simplifies the disassembly and assembly process, making the adjustment of the float assembly quick and easy, and greatly improving the user experience. In particular, this utility model further provides multiple pre-installed protrusions 12, which can provide intuitive positioning references during installation, making the installation position of the float assembly more accurate and convenient.

[0051] The water inlet valve of this utility model, the parts not covered (such as the internal structure of the water inlet valve body 1, the specific structure of the movable joint between the lifting rod 7 and the connecting rod 6, etc.) are the same as or can be implemented by existing technology.

[0052] The above embodiments are only used to further illustrate a water inlet valve of the present utility model, but the present utility model is not limited to the embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the technical solution of the present utility model.

Claims

1. A water inlet valve, comprising a water inlet valve body and a float assembly, the float assembly being provided with a connecting sleeve sleeved outside the water inlet valve body, the connecting sleeve and the water inlet valve body having a separable axial multi-stage positioning structure; characterized in that: The connecting sleeve is provided with an elastic buckle, and the outer peripheral wall of the water inlet valve body is provided with an anti-rotation part. The connecting sleeve rotates around its axis to make its elastic buckle engage or disengage with the anti-rotation part. In the disengaged state, the float assembly can slide along the axial direction of the water inlet valve body. In the engaged state, it achieves anti-rotation and limiting of the connecting sleeve. The connecting sleeve achieves axial positioning through the axial multi-stage positioning structure that cooperates with the water inlet valve body.

2. The inlet valve according to claim 1, characterized in that: The axial multi-stage positioning structure includes multiple positioning bosses arranged axially at intervals on the outer peripheral wall of the inlet valve body, and a locking block disposed on the inner peripheral wall of the connecting sleeve. When the connecting sleeve is in the axial positioning state, the locking block is engaged between two adjacent positioning bosses.

3. The inlet valve according to claim 2, characterized in that: The outer peripheral wall of the water inlet valve body is also provided with a plurality of pre-installed protrusions arranged at intervals along its axial direction. The plurality of pre-installed protrusions are arranged adjacent to the anti-rotation part in the circumferential direction of the water inlet valve body. Each positioning boss corresponds to a pre-installed protrusion, and each positioning boss is aligned with the corresponding pre-installed protrusion in the circumferential direction of the water inlet valve body. When the elastic buckle is separated from the anti-rotation part, the elastic buckle can switch positions up and down to lock between adjacent pre-installed protrusions.

4. The inlet valve according to claim 3, characterized in that: The pre-installed protrusion is rib-shaped and extends circumferentially along the body of the water inlet valve.

5. The inlet valve according to claim 1, characterized in that: The anti-rotation part is elongated and extends along the axial direction of the main body of the water inlet valve.

6. The inlet valve according to claim 5, characterized in that: The anti-rotation part includes two anti-rotation ribs arranged side by side, both of which extend along the axial direction of the water inlet valve body, and an anti-rotation groove is formed between the two anti-rotation ribs for engaging with the elastic buckle.

7. The inlet valve according to any one of claims 1-6, characterized in that: The elastic buckle is integrally formed with the connecting sleeve, and includes an upwardly extending elastic arm and a retaining part disposed at the upper end of the elastic arm.

8. The inlet valve according to claim 7, characterized in that: The retaining part has a chamfer or rounded corner to provide guidance when the elastic buckle is engaged; the retaining part has a handle on the side away from the water inlet valve body for separation after engagement.

9. The inlet valve according to claim 7, characterized in that: The lower end of the elastic arm is located in the clearance notch opened at the upper end of the connecting sleeve, and there are gaps between the two sides of the elastic arm and the two side walls opposite to the clearance notch, so as to allow the elastic arm to undergo elastic deformation during the snap-fit ​​process.

10. The inlet valve according to claim 1, characterized in that: The axial multi-stage positioning structure is configured as multiple groups, and the multiple groups of the axial multi-stage positioning structure are arranged at intervals along the circumference of the water inlet valve body. The float assembly includes an outer float, an inner float, and a one-way valve. The connecting sleeve is disposed on the outer float, and the inner float is disposed vertically within a water storage cavity provided inside the outer float. The bottom of the water storage cavity is provided with an inlet and an outlet. The one-way valve is movably disposed at the inlet and outlet and closes the inlet and outlet by buoyancy when the water level rises. The inner float is movably connected to a lifting rod provided on the top of the inlet valve body via a connecting rod, and the inner float and the connecting rod are detachably connected.

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