Water purifier with integrated seal and filter bottle locking mechanism

Abstract

The utility model discloses a water purifier with integrated sealing and filter bottle locking mechanism, including filter bottle, main body shell and auxiliary shell. Filter bottle is equipped with the fluid interface with sealing ring, and the main body shell is provided with the overhole and is equipped with the convex edge around the overhole, and the auxiliary shell is equipped with the butt joint pipeline with the slot. When assembling, the filter bottle interface is inserted into the slot through the overhole, and the convex edge directly compacts the sealing ring to the butt joint pipeline end, so that the outer peripheral wall of sealing ring forms triple seal with the inner wall of overhole and the inner wall of slot, and the sealing reliability is high. The utility model adopts articulated filter bottle fastener to realize the quick locking and unlocking of filter bottle, and ensures the assembly accuracy through the cooperation of positioning block and positioning convex, and the rotation angle is limited by limiting slot and limiting convex, and the limiting block on outer shell prevents accidental opening, which has the advantages of compact structure, convenient assembly, reliable sealing and safety.

Description

Technical Field

[0001] This utility model relates to the field of water treatment equipment technology, specifically to a water purifier with an integrated sealing and filter bottle locking mechanism. Background Technology

[0002] In water purifiers, a reliable seal between the filter bottle's fluid interface and the main pipeline is crucial for ensuring leak-free operation. Currently, this sealing structure typically relies on a separate pressure plate assembly: after a sealing ring is fitted onto the filter bottle interface, a separate metal or plastic pressure plate is placed over the sealing ring, and then the pressure plate is tightened with screws or other fasteners, thus pressing the sealing ring against the end of the connecting pipeline to achieve a seal. This traditional structure has significant drawbacks: First, it involves numerous parts, requiring separate design of pressure plates and screws, which not only increases material costs but also significantly increases assembly complexity and time. Second, the sealing reliability is poor; because the pressure plate is usually small and rigid, uneven force at various points during screw tightening can easily lead to inconsistent circumferential compression of the sealing ring, creating leakage channels and posing a risk of water leakage. Finally, the assembly efficiency is low; operators must sequentially complete multiple delicate processes such as filter bottle installation, sealing ring positioning, pressure plate placement, and screw tightening, resulting in low production efficiency and difficulty meeting the needs of modern large-scale production.

[0003] Furthermore, existing water purifier filter bottle locking mechanisms mostly employ simple snap-fit ​​or traditional threaded connections. With prolonged use, the snap-fit ​​mechanism's claws are prone to fatigue deformation or wear, leading to decreased locking force and potential filter bottle loosening. Threaded connections, on the other hand, are cumbersome to operate, have limited installation positions, and also carry the risk of thread stripping or wear. Loosening of the filter bottle directly compromises the stability of the aforementioned sealing structure, further increasing the possibility of leakage. Therefore, there is an urgent need in this field for an integrated, innovative structure that can simultaneously solve both sealing and locking problems, thereby simplifying the overall structure of the water purifier, improving sealing reliability, and significantly enhancing installation efficiency. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a water purifier with an integrated sealing and filter bottle locking mechanism. Through a unique structural design, this water purifier utilizes the main body shell to directly press the sealing ring, forming multiple seals, and is supplemented by a hinged locking mechanism, achieving rapid and reliable installation and fixation of the filter bottle.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A water purifier with an integrated sealing and filter bottle locking mechanism includes a filter bottle, a main body housing, and an auxiliary housing. The key features are: the filter bottle has a filter bottle fluid inlet with a sealing ring fitted onto it; the main body housing has a through hole for the filter bottle fluid inlet to pass through, and a raised edge surrounding the through hole is provided on the side facing the auxiliary housing; the auxiliary housing has a connecting pipe, and the end of the connecting pipe has a slot for the filter bottle fluid inlet to be inserted.

[0006] During assembly, the filter bottle fluid interface passes sequentially through the through-hole and is inserted into the slot. The protruding edge abuts against the side of the sealing ring away from the auxiliary housing, pressing the sealing ring tightly against the end of the connecting pipe. This pressing action ensures that the outer peripheral wall of the sealing ring is simultaneously in close contact with the inner wall of both the through-hole and the slot, thereby forming an integrated and reliable triple radial sealing barrier that effectively prevents fluid leakage.

[0007] Preferably, the protruding edge is an annular structure integrally injection molded with the main shell. This integrated design is simple in structure, high in strength, and ensures uniform and stable clamping force.

[0008] Preferably, the auxiliary housing has at least two positioning blocks protruding from the side facing the main housing; the main housing has positioning protrusions that cooperate with the positioning blocks. Through the cooperation of the positioning blocks and the positioning protrusions, the auxiliary housing and the main housing can be quickly and accurately positioned, simplifying the assembly process.

[0009] Preferably, the main housing has a receiving cavity for installing the filter bottle, and the upper part of the receiving cavity has a connecting hole for connecting the filter bottle and the auxiliary housing.

[0010] Preferably, the filter bottle is provided with a filter bottle locking fastener at the top. One end of the filter bottle locking fastener is engaged with the top of the filter bottle, and the other end passes through the connecting hole and is hinged to the auxiliary housing. This fastener constitutes the main locking mechanism of the filter bottle.

[0011] Preferably, the filter bottle clamping device includes an integrally formed snap-fit ​​part and a hinge part. The snap-fit ​​part is a plate-shaped structure that engages with a snap-fit ​​groove provided on the top of the filter bottle; the hinge part is provided with a hinge shaft for hinged to the auxiliary housing.

[0012] Preferably, the positioning block of the auxiliary housing is provided with a hinge hole that fits with the hinge shaft with a clearance. The filter bottle clamping device can rotate around the hinge shaft, thereby engaging or disengaging the clamping part with the clamping groove on the top of the filter bottle, realizing the locking and releasing of the filter bottle.

[0013] Preferably, the hinge shaft is cylindrical and a portion of its cylindrical surface is cut to form a tangent plane.

[0014] Preferably, the top of the filter bottle is provided with at least one limiting groove, and the lower part of the hinge extends with a limiting protrusion that mates with the limiting groove. The limiting protrusion abuts against the bottom of the limiting groove to limit the rotation angle of the filter bottle fastener and prevent excessive overturning.

[0015] Preferably, the system also includes an outer protective shell, which is fitted over the outer side of the main housing and has at least one limiting block on its inner wall. The limiting block abuts against the top of the filter bottle clamp, preventing the filter bottle clamp from accidentally flipping upwards and falling off during use due to vibration or water flow impact, providing double protection.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. The sealing ring is directly pressed against the protruding edge on the main housing, forming multiple seals with both the inner wall of the through hole and the inner wall of the slot. This integrated sealing design not only shortens the sealing path and improves sealing reliability, but also eliminates the need for a traditional independent pressure plate structure, making the overall structure more compact.

[0017] 2. The filter bottle uses a hinged locking mechanism, allowing for easy locking and unlocking with a simple flip. This design greatly simplifies the operation, making filter bottle replacement more time-saving and labor-saving, significantly improving user experience and maintenance efficiency.

[0018] 3. The precise fit between the auxiliary housing and the main housing via positioning blocks and protrusions ensures accurate alignment between the connecting pipe and the fluid interface of the filter bottle. This positioning mechanism not only improves assembly efficiency but also guarantees optimal sealing performance with each assembly.

[0019] 4. The cooperation between the limiting groove and the limiting protrusion effectively restricts the rotation range of the fastener, while the limiting block on the outer shell provides a second layer of protection to prevent accidental opening. This double-safety mechanism greatly enhances the product's safety and long-term reliability.

[0020] 5. The sealing, positioning, and locking functional modules are integrated into the main body and auxiliary housings respectively, making the overall layout more rational. This highly integrated design concept not only optimizes the utilization of internal space but also improves the product's structural rigidity and production efficiency. Attached Figure Description

[0021] Figure 1 This is an exploded view of the overall structure of an embodiment of the present utility model; Figure 2 This is an overall sectional view of an embodiment of the present utility model; Figure 3 for Figure 2 The enlarged view of area A shows the assembly relationship of the filter bottle interface, sealing ring, flange, and connecting pipeline; Figure 4 This is a schematic diagram of the structure of the main body shell and the sealing ring of this utility model; Figure 5 This is a schematic diagram showing the assembly relationship between the filter bottle fastener, the filter bottle, and the auxiliary housing described in this utility model. Figure 6 This is a schematic diagram of the structure of the filter bottle fastener described in this utility model; Figure 7 This is an exploded view of the filter bottle fastener and filter bottle described in this utility model. Detailed Implementation

[0022] The technical solution of this utility model will now be described in detail with reference to the accompanying drawings. It should be understood that the following description is intended to clearly disclose this utility model through the description of preferred embodiments, and not to limit its scope of protection.

[0023] like Figures 1-3 As shown, the core of this utility model is a water purifier, mainly comprising a filter bottle 1, a main body shell 2, and an auxiliary shell 3. Its core feature lies in its unique integrated axial sealing structure: the filter bottle 1 is provided with a filter bottle fluid interface 11, on which a sealing ring 4 is fitted. The main body shell 2 has a through hole 21 for the interface to pass through, and a raised edge 22 surrounding the through hole 21 is provided on the side facing the auxiliary shell 3. The auxiliary shell 3 is provided with a connecting pipe 31, the end of which has a slot 32.

[0024] During assembly, the filter bottle fluid interface 11 passes through the through hole 21 and is inserted into the slot 32. At this time, the protrusion 22 on the main housing 2 directly abuts against and presses the sealing ring 4 away from the auxiliary housing 3, ultimately squeezing the sealing ring 4 tightly onto the end plane of the connecting pipe 31. This pressing action forces the sealing ring 4 to undergo radial elastic deformation, causing its outer peripheral wall to make close contact with both the inner wall of the through hole 21 and the inner wall of the slot 32, thus constructing an efficient and reliable triple radial sealing barrier.

[0025] Specifically, this structure highly integrates the sealing function. Through a simple axial installation action, the sealing ring 4 is directly compressed using the structure of the main housing 2 itself (protruding edge 22), eliminating the need for additional compression parts. The sealing ring 4 achieves sealing in three directions simultaneously (connecting to the pipe end face, the inner wall of the through hole, and the inner wall of the slot), greatly improving the reliability and safety of the seal and eliminating the risk of leakage at its source. This is the core innovation of this utility model.

[0026] Furthermore, such as Figure 4 As shown, the protruding edge 22 is an annular structure integrally formed with the main body shell 2 through injection molding.

[0027] In detail, the one-piece molding process ensures that the flange 22 has extremely high structural strength and dimensional stability, making the force distribution of the compression sealing ring 4 uniform and avoiding sealing failure caused by insufficient strength or uneven stress of the parts. At the same time, this design reduces the number of parts, simplifies the mold structure and assembly process, and reduces manufacturing costs.

[0028] Alternative Example 1: Trapezoidal Cross-Section Flanged Structure This embodiment is consistent with the core technical solution of the above preferred embodiment, except that the cross-sectional shape of the protruding edge 22 of the main shell 2 is adaptively adjusted to further demonstrate the structural flexibility of the protruding edge 22, proving that the protection scope of this utility model is not limited to a single cross-sectional form.

[0029] Specifically, in this alternative embodiment, the protruding edge 22 is still integrally injection molded with the main body shell 2 and is arranged around the through hole 21, but its cross-sectional shape is an isosceles trapezoid: the width of the upper base (the side closer to the main body shell 2) of the trapezoid is 2mm, and the width of the lower base (the side facing the auxiliary shell 3) is 3mm. The overall height of the protruding edge 22 is still consistent with the preferred embodiment, ensuring that the compression of the sealing ring 4 meets the standard.

[0030] The advantages of this trapezoidal cross-section design are: The bottom width is greater than the top width, which can increase the contact area between the convex edge 22 and the sealing ring 4, making the clamping force on the sealing ring 4 more uniform, and further reducing the risk of permanent deformation of the sealing ring 4 due to excessive local pressure. The trapezoidal inclined side facilitates demolding of the injection mold, reduces mold wear, lowers the difficulty of the production process, and at the same time improves the edge smoothness of the convex edge 22 after molding, avoiding scratches on the sealing ring 4 due to edge burrs; During assembly, the bottom of the trapezoidal protrusion 22 can still stably abut against the sealing ring 4, pushing the sealing ring 4 to press against the end of the connecting pipe 31. After being pressed, the sealing ring 4 can still form a tight triple seal with the inner wall of the through hole 21 and the inner wall of the slot 32. The sealing effect is completely consistent with the preferred embodiment.

[0031] Furthermore, to further verify the universality of the core solution of "the main body shell having a raised edge around the through hole to press the sealing ring", this utility model can also provide an alternative embodiment 2: a raised edge structure with a rounded arc cross section. In this embodiment, the cross-sectional shape of the raised edge 22 is a rounded arc with a radius of 1mm, and it is also integrally injection molded with the main body shell 2; the side of the rounded arc raised edge 22 facing the sealing ring 4 is a smooth arc surface, which can form a surface contact with the sealing ring 4 during assembly, avoiding the edge stress concentration problem that may exist in rectangular or trapezoidal cross sections, further reducing the local wear of the sealing ring 4 under long-term pressure, and extending the service life of the sealing ring 4; at the same time, the rounded arc structure is also convenient for mold demolding, and the contact pressure distribution between the arc surface and the sealing ring 4 is more uniform. Even if there is a slight assembly deviation in the filter bottle fluid interface 11, the arc surface can adjust the pressure transmission direction through its own structural adaptability, ensuring that the sealing ring 4 always maintains a tight fit with the inner wall of the through hole 21 and the inner wall of the slot 32, without affecting the triple sealing effect.

[0032] In these alternative embodiments 1 and 2, the structure and assembly relationship of filter bottle 1, auxiliary housing 3, filter bottle fastener 5, and outer protective housing 6 are the same as those in the preferred embodiment. The same sealing function can be achieved simply by adjusting the cross-sectional shape (trapezoidal or rounded arc) of the convex edge 22. This fully demonstrates that the core solution of "setting a convex edge around the through hole in the main housing to press the sealing ring" has multiple feasible structures and there is no deviation of the solution due to differences in structural details.

[0033] Furthermore, such as Figure 4 and Figure 5 As shown, to ensure that the auxiliary housing 3 and the main housing 2 can be quickly and accurately aligned, the auxiliary housing 3 has at least two positioning blocks 33 protruding from the side facing the main housing 2. Correspondingly, the main housing 2 is provided with positioning protrusions 23 that cooperate with these positioning blocks 33.

[0034] Specifically, the cooperation between the positioning block 33 and the positioning protrusion 23 enables the circumferential and radial positioning of the auxiliary housing 3 and the main housing 2 in the early stages of assembly. This ensures that the slot 32 on the auxiliary housing 3 can be precisely aligned with the through hole 21 and the filter bottle fluid interface 11 on the main housing 2, greatly simplifying the assembly difficulty during final compression sealing and improving production efficiency and product consistency.

[0035] Furthermore, such as Figure 4 As shown, the main housing 2 has a receiving cavity 24 specifically for accommodating and installing the filter bottle 1. A connecting hole 25 is provided at the upper part of the receiving cavity 24.

[0036] The receiving cavity 24 serves to enclose, position, and protect the filter bottle 1. The connecting hole 25 provides a channel for the installation and movement of the subsequent filter bottle clamping device 5, and is an important structural basis for connecting the locking mechanism of the filter bottle 1 and the auxiliary housing 3.

[0037] Furthermore, such as Figures 5-7 As shown, this utility model introduces a unique quick-release locking mechanism for the filter bottle. The top of the filter bottle 1 is provided with a filter bottle locking fastener 5. One end of the fastener 5 is engaged with the top of the filter bottle 1, and the other end passes through the connecting hole 25 on the main body housing 2, forming a hinged connection with the auxiliary housing 3.

[0038] Specifically, this design changes the way filter bottle 1 is fixed from the traditional screw-on to a hinged snap-fit, achieving true "quick installation and quick replacement". Users can simply flip the filter bottle clip 5 like opening and closing a lid to fix or release filter bottle 1, revolutionizing the user experience and saving time and effort.

[0039] More specifically, such as Figure 3 and Figure 4 As shown, the filter bottle fastener 5 consists of an integrally formed snap-fit ​​part 51 and a hinge part 52. The snap-fit ​​part 51 is a plate-shaped structure used to engage with the snap-fit ​​groove 12 pre-set on the top of the filter bottle 1. The hinge part 52 is provided with a hinge shaft 53, which is the key to achieving hinge connection with the auxiliary housing 3.

[0040] The one-piece molding ensures the strength of the fastener 5. The separate snap-fit ​​part 51 and hinge part 52 have clearly defined functions: the hinge part 52 provides the basis for rotational movement, and the snap-fit ​​part 51 performs the locking function. This structure is simple, reliable, and easy to manufacture.

[0041] Furthermore, such as Figure 2 and Figure 5 As shown, in order to achieve the hinge, a hinge hole 34 is provided on the positioning block 33 of the auxiliary housing 3, which is adapted to the hinge shaft 53 on the filter bottle fastener 5. The filter bottle fastener 5 can rotate around this hinge shaft 53 (i.e., the center line of the hinge hole 34), thereby driving the locking part 51 to engage or disengage from the locking groove 12 of the filter bottle 1.

[0042] By directly mounting the hinge hole 34 on the positioning block 33, functional integration is achieved, space is saved, and the structure becomes more compact. The clearly defined rotational motion relationship ensures smooth and reliable locking action.

[0043] Furthermore, such as Figure 6 As shown, the hinge shaft 53 is designed to be cylindrical, but part of its cylindrical surface is cut to form a tangent plane.

[0044] The core function of this cut surface treatment is that when the filter bottle clamp 5 is subjected to an upward flipping force (e.g., during filter bottle replacement or accidental collision), the cut surface aligns with the corresponding plane of the hinge hole 34. This planar fit effectively resists the torque applied to the hinge part 52, preventing elastic deformation or inward contraction of the hinge part 52. Traditional cylindrical hinge shafts, when subjected to force, have point or line contact at all joints, leading to stress concentration and potentially causing deformation of the hinge hole wall or the hinge part itself, resulting in a risk of disengagement after prolonged use. This invention, by setting a cut surface, transforms the force application method from rotational sliding to planar contact, greatly enhancing torsional stiffness and structural stability. This design fundamentally eliminates the problem of accidental disengagement caused by "inward retraction of the latch," ensuring the absolute reliability of the filter bottle clamp 5 in the locked state and significantly improving product safety and service life.

[0045] Furthermore, such as Figure 7 As shown, in order to precisely control the flipping angle of the filter bottle clamp 5 and prevent it from rotating excessively, a limiting groove 13 is provided on the top of the filter bottle 1. Correspondingly, a limiting protrusion 54 extends from the lower part of the hinge portion 52 of the filter bottle clamp 5 to cooperate with the limiting groove 13. When the clamp 5 rotates downward to the locked position, the limiting protrusion 54 abuts against the bottom of the limiting groove 13, thereby preventing it from continuing to rotate.

[0046] The mechanical angle limit structure provides a clear, tactile physical stop for the "locked" state, informing the user that the locking is complete and preventing damage to the fastener 5 or filter bottle 1 due to excessive pressure, thus improving the product's durability and human-machine interface.

[0047] Furthermore, such as Figure 1 and Figure 2 As shown, this utility model also includes an outer protective shell 6, which is fitted onto the outside of the main shell 2, serving both aesthetic and protective purposes for the internal structure. At least one limiting block 61 is provided on its inner wall. When the outer protective shell 6 is installed in place, this limiting block 61 precisely abuts against the top surface of the filter bottle clamping fastener 5, which is in a locked state.

[0048] The limiting block 61 on the outer casing 6 constitutes a second safety mechanism. It effectively prevents the filter bottle retainer 5 from accidentally flipping upwards and dislodging due to water flow impact or machine vibration during the operation of the water purifier, greatly enhancing the reliability and safety of the locking and ensuring the stability of the product during long-term use.

[0049] The above descriptions are merely some preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A water purifier with integrated sealing and filter bottle locking mechanism comprising a filter bottle (1), a main housing (2) and an auxiliary housing (3), characterized in that, The filter bottle (1) is provided with a filter bottle fluid interface (11), and a sealing ring (4) is fitted on the filter bottle fluid interface (11); the main body housing (2) is provided with a through hole (21) for the filter bottle fluid interface (11) to pass through; the main body housing (2) is provided with a raised edge (22) surrounding the through hole (21) on the side facing the auxiliary housing (3); the auxiliary housing (3) is provided with a connecting pipe (31), and the end of the connecting pipe (31) is provided for the filter bottle The fluid interface (11) is inserted into the slot (32); the filter bottle fluid interface (11) passes through the through hole (21) and is inserted into the slot (32). The protrusion (22) abuts against the side of the sealing ring (4) away from the auxiliary housing (3) and presses the sealing ring (4) against the end of the connecting pipe (31). The sealing ring (4) is deformed by pressure, and its outer peripheral wall is press-fitted with the inner wall of the through hole (21) and the inner wall of the slot (32).

2. A water purifier with an integrated sealing and filter bottle locking mechanism according to claim 1, characterized in that, The protruding edge (22) is an annular structure integrally injection molded with the main body shell (2).

3. A water purifier with an integrated sealing and filter bottle locking mechanism according to claim 1, characterized in that, The auxiliary housing (3) has at least two positioning blocks (33) protruding on one side facing the main housing (2); the main housing (2) has positioning protrusions (23) that cooperate with the positioning blocks (33); the auxiliary housing (3) and the main housing (2) are docked and positioned by the cooperation of the positioning blocks (33) and the positioning protrusions (23).

4. A water purifier with an integrated sealing and filter bottle locking mechanism according to claim 1, characterized in that, The main body housing (2) is provided with a receiving cavity (24) for installing the filter bottle (1), and the upper part of the receiving cavity (24) is provided with a connecting hole (25) for connecting the filter bottle (1) and the auxiliary housing (3).

5. A water purifier with an integrated sealing and filter bottle locking mechanism according to claim 4, characterized in that, The filter bottle (1) is provided with a filter bottle fastener (5) at the top. One end of the filter bottle fastener (5) is engaged with the top of the filter bottle (1), and the other end passes through the connection hole (25) and is hinged to the auxiliary housing (3).

6. A water purifier with an integrated sealing and filter bottle locking mechanism according to claim 5, characterized in that, The filter bottle fastener (5) includes an integrally formed snap-fit ​​part (51) and a hinge part (52); the snap-fit ​​part (51) is a plate-shaped structure that engages with the snap-fit ​​groove (12) provided on the top of the filter bottle (1); the hinge part (52) is provided with a hinge shaft (53) for hinged to the auxiliary housing (3).

7. A water purifier with an integrated sealing and filter bottle locking mechanism according to claim 6, characterized in that, The positioning block (33) of the auxiliary housing (3) is provided with a hinge hole (34) that is clearance-fitted with the hinge shaft (53) of the hinge part (52), so that the filter bottle fastener (5) can rotate around it and the fastener (51) can engage or disengage with the fastener groove (12) on the top of the filter bottle (1).

8. A water purifier with an integrated sealing and filter bottle locking mechanism according to claim 7, characterized in that, The hinge shaft (53) is cylindrical and part of its cylindrical surface is cut to form a cutting plane.

9. A water purifier with an integrated sealing and filter bottle locking mechanism according to claim 8, characterized in that, The filter bottle (1) has at least one limiting groove (13) at the top, and the lower part of the hinge (52) extends a limiting protrusion (54) that cooperates with the limiting groove, which is used to abut against the bottom of the limiting groove (13) and limit the rotation angle of the filter bottle fastener (5).

10. A water purifier with integrated seal and filter bottle locking mechanism as claimed in claim 9, wherein, It also includes an outer protective shell (6), which is fitted on the outside of the main body shell (2). The inner wall of the outer protective shell (6) is provided with at least one limiting block (61), which abuts against the top of the filter bottle fastener (5) to prevent the filter bottle fastener (5) from flipping upward.

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