Filter element locking device, filter element assembly and water purifier

Abstract

The utility model discloses a filter element locking device, a filter element assembly and a water purifier, the filter element locking device comprises a filter element head, a mounting seat, a limiting piece and a limiting sleeve, and the filter element head is provided with a limiting groove; the mounting seat is arranged outside the filter element head in a sleeving manner, can axially move relative to the filter element head, and is provided with a mounting through hole corresponding to the limiting groove; the limiting piece is movably arranged in the mounting through hole in a penetrating manner, and part of the limiting piece extends into the limiting groove after the filter element head and the mounting seat are assembled in place; the limiting sleeve is arranged outside the mounting seat in a sleeving manner and can axially move relative to the filter element head, and after the filter element head and the mounting seat are assembled in place, the limiting sleeve prevents the limiting piece from retreating from the limiting groove; the anti-falling part is arranged on the periphery of the mounting base in a protruding mode and used for preventing the limiting sleeve from being separated from the mounting base after the mounting base is separated from the filter element head, the sealing performance of the filter element head and the mounting base can be improved, and convenient mounting and dismounting are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water purification equipment technical field, especially relate to a filter core locking device, filter core subassembly and water purifier. BACKGROUND

[0002] With the development of water purification equipment technical field, the use of water purifier is more and more popular. The filter core in the water purifier will decrease the filtering capacity after being used for a period of time, and the filter core needs to be replaced in order to maintain good filtering effect. The filter core bottle needs to be taken out from the shell of the water purifier during the replacement of the filter core, and at this time, the filter core head of the filter core bottle needs to be disassembled from the mounting seat arranged in the shell.

[0003] In the prior art, the filter core head and the mounting seat are fixed by a limiting pin, a limiting sleeve is arranged outside the mounting seat to keep the limiting pin in the state of penetrating the filter core head and the mounting seat, so as to ensure that the filter core head and the mounting seat are relatively fixed. However, during disassembly or assembly, the limiting sleeve is easy to fall off from the outer periphery of the mounting seat, which is not conducive to operation. SUMMARY

[0004] The filter core locking device, the filter core subassembly and the water purifier provided by the application can prevent the limiting sleeve from falling off after the mounting seat and the filter core head are separated, and facilitate assembly or disassembly.

[0005] In the first aspect, the application provides a filter core locking device, which comprises a filter core head, a mounting seat, a limiting piece and a limiting sleeve. The filter core head has a limiting groove. The mounting seat is sleeved outside the filter core head and can move relative to the axial direction of the filter core head. The mounting seat has a mounting through hole corresponding to the limiting groove. The limiting piece is movably penetrated in the mounting through hole, and part of the limiting piece extends into the limiting groove after the filter core head and the mounting seat are assembled in place. The limiting sleeve is sleeved outside the mounting seat and can move relative to the axial direction of the filter core head. After the filter core head and the mounting seat are assembled in place, the limiting sleeve blocks the limiting piece from exiting the limiting groove. The anti-falling piece is protruded on the outer periphery of the mounting seat and is used to prevent the limiting sleeve from separating from the mounting seat after the mounting seat and the filter core head are separated.

[0006] In some embodiments, one end of the filter core head is used to be mounted with a filter bottle, and the anti-falling piece is arranged at one end of the mounting seat close to the filter bottle.

[0007] In some embodiments, the anti-falling piece is a limiting ring, and the limiting ring is sleeved on the outer periphery of the mounting seat.

[0008] In some embodiments, the outer wall surface of the mounting seat is recessed with a positioning ring groove, and the limiting ring is partially embedded in the positioning ring groove and partially protruded outside the positioning ring groove.

[0009] In some embodiments, the limiting member extends into or exits from the limiting slot along the radial direction of the filter head.

[0010] In some embodiments, the limiting member comprises a limiting pin, and the limiting pin is provided with a hemispherical surface on each side along the radial direction of the filter head.

[0011] In some embodiments, the mounting through hole comprises a first hole section and a second hole section arranged in sequence from outside to inside and in communication with each other, the diameter of the first hole section is greater than that of the second hole section, so as to form a stepped structure between the first hole section and the second hole section, and the limiting pin comprises:

[0012] a first limiting portion movably arranged in the first hole section; and

[0013] a second limiting portion connected to the first limiting portion and close to a first end of the limiting slot, the outer diameter of the second limiting portion is smaller than that of the first limiting portion, so that the second limiting portion can pass through the second hole section and extend into the limiting slot, and the first limiting portion abuts against the stepped surface of the stepped structure.

[0014] In some embodiments, the limiting slot is an annular slot arranged along the circumferential direction of the filter head.

[0015] In some embodiments, a plurality of limiting slots are arranged at intervals along the circumferential direction of the filter head.

[0016] In some embodiments, the limiting sleeve comprises:

[0017] a first sub-sleeve movably sleeved on the mounting seat along the circumferential direction of the filter head;

[0018] a second sub-sleeve connected to the first sub-sleeve, the inner diameter of the second sub-sleeve is greater than that of the first sub-sleeve, and after the filter head and the mounting seat are assembled in place, the limiting sleeve blocks the limiting member from exiting from the limiting slot; and

[0019] a third sub-sleeve, the inner diameter of the third sub-sleeve is greater than that of the second sub-sleeve, so that when the third sub-sleeve is opposite to the mounting through hole, the limiting member can exit from the limiting slot.

[0020] In some embodiments, the filter head is provided with a first positioning structure, and when the third sub-sleeve abuts against the first positioning structure, the second sub-sleeve abuts against the limiting member along the radial direction of the filter head.

[0021] In some embodiments, the filter head is provided with a second positioning structure, when the mounting seat abuts against the second positioning structure, the limiting member is located in the limiting groove.

[0022] In a second aspect, the embodiments of the present application provide a filter assembly, comprising

[0023] The filter core locking device as described above;

[0024] A filter bottle, the filter head is mounted at one end of the filter bottle; and

[0025] A filter core, mounted in the filter bottle.

[0026] In a second aspect, the embodiments of the present application provide a filter assembly, comprising

[0027] A housing, having a mounting opening; and

[0028] The filter core assembly as described above, the mounting seat is arranged in the housing, the filter bottle is detachably mounted in the housing through the filter head, the filter bottle and the filter head can be in and out of the housing from the mounting opening.

[0029] Based on the filter core locking device, the filter core assembly and the water purifier provided by the embodiments of the present application, when disassembling, the limiting sleeve is moved to release the limiting effect of the limiting member on the limiting groove, the limiting member can be separated from the limiting groove, at this time, the filter head and the mounting seat can be separated from each other, and after the separation of the filter head and the mounting seat, the limiting sleeve can be prevented from falling off under the limitation of the anti-falling member after the separation of the mounting seat and the filter head, which is more conducive to the disassembly and assembly of the filter core assembly. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.

[0031] Figure 1 The structural schematic diagram of the filter core assembly of the first embodiment provided by the embodiments of the present application;

[0032] Figure 2 The exploded schematic diagram of the filter core assembly of the first embodiment provided by the embodiments of the present application;

[0033] Figure 3 The cross-sectional schematic diagram of the filter core assembly of the first embodiment provided by the embodiments of the present application;

[0034] Figure 4 For Figure 3An enlarged schematic view at A in the middle;

[0035] Figure 5 A structural schematic view of a limiting piece provided for an embodiment of the present application;

[0036] Figure 6 A structural schematic view of a mounting seat provided for an embodiment of the present application;

[0037] Figure 7 A structural schematic view of a filter head provided for an embodiment of the present application;

[0038] Figure 8 A structural schematic view of a limiting sleeve provided for an embodiment of the present application;

[0039] Figure 9 A sectional view schematic view of a limiting sleeve provided for an embodiment of the present application;

[0040] Figure 10 A structural schematic view of a locking piece provided for an embodiment of the present application;

[0041] Figure 11 A structural schematic view of a filter core assembly of a second embodiment provided for an embodiment of the present application;

[0042] Figure 12 An exploded schematic view of a filter core assembly of a second embodiment provided for an embodiment of the present application;

[0043] Figure 13 A first exploded schematic view of a filter core assembly of a third embodiment provided for an embodiment of the present application;

[0044] Figure 14 A second exploded schematic view of a filter core assembly of a third embodiment provided for an embodiment of the present application;

[0045] Figure 15 A structural schematic view of a limiting sleeve of a filter core assembly of a third embodiment provided for an embodiment of the present application;

[0046] Figure 16 A structural schematic view of a filter head of a filter core assembly of a third embodiment provided for an embodiment of the present application.

[0047] BRIEF DESCRIPTION OF THE DRAWINGS

[0048] 1、filter core assembly;10、filter core locking device;100、filter core head;100a、limiting groove;110、first positioning structure;120、second positioning structure;130、second screw buckle;130a、screw buckle groove;131、connecting part, 132、fourth limiting part;140、main body part;150、assembly part;170、foolproof structure;200、mounting seat;200a、mounting through hole;200b、first hole section;200c、second hole section;200d、step structure;200e、step surface;200f、positioning ring groove;210、seat body;220、mounting part;240、damping piece;250、fifth limiting part;300、limiting piece;310、first limiting part;320、second limiting part;400、limiting sleeve;410、first sub-sleeve;420、second sub-sleeve;430、third sub-sleeve;440、limiting groove;450、first screw buckle;510、anti-dropping piece;520、sealing ring;600、locking piece;610、handle;611、rotary connecting part;612、handle part;620、third limiting part;700、elastic piece;20、filter bottle;30、filter core.

[0049] The purposes, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0050] In order to make the purposes, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail with reference to the drawings.

[0051] The following description of the embodiments with reference to the drawings is merely representative of embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with the present application as detailed in the appended claims.

[0052] In the description of the present application, it should be understood that the terms "first", "second" and the like are used only for the purpose of description and cannot be understood as indicating or implying relative importance. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" means two or more. "And / or", the association between the associated objects, means that there can be three kinds of relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. The character " / " generally represents that the associated objects before and after are a kind of "or" relationship.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the singular forms "a", "an" and "the" include plural references unless the context clearly dictates otherwise.

[0054] The application provides a water purifier. The water purifier comprises a shell and a filter element assembly 1. The shell has a mounting opening, and the filter element assembly 1 enters or exits an internal space of the shell through the mounting opening.

[0055] Please refer to Figure 1 and Figure 2 The filter element assembly 1 comprises a filter bottle 20, a filter element 30 and a filter element locking device 10. The filter element 30 is installed in the filter bottle 20, and the filter element locking device 10 comprises a filter element head 100 and a mounting seat 200. The filter element head 100 is installed at one end of the filter bottle 20 and blocks the bottle opening of the filter bottle 20. The mounting seat 200 is arranged in the shell, the filter element head 100 is detachably connected with the mounting seat 200, and the filter bottle 20 is detachably installed in the shell through the filter element head 100. The end of the filter bottle 20 away from the filter element head 100 is connected with a water inlet channel, the filter element head 100 is connected with a water outlet channel through the mounting seat 200, and the water channels realize the filtering effect through the filter element 30. When the water purifier is used for a period of time, the filter element head 100 and the mounting seat 200 can be detached, and then the entire filter bottle 20 and the filter element 30 inside can be replaced. It can be understood that the directions of the water inlet channel and the water outlet channel can be replaced, that is, the filter element head 100 can be connected with the water inlet channel through the mounting seat 200, and the end of the filter bottle 20 away from the filter element head 100 can be connected with the water outlet channel.

[0056] Optionally, the end of the filter bottle 20 away from the filter element head 100 can be provided with a filter bottle cover that can be screwed and detached. When the filter bottle cover is screwed off, the bottle opening of the filter bottle 20 is opened, and then the filter element 30 is replaced through the bottle opening. The filter bottle cover is screwed on the filter bottle 20 again, and the bottle opening is blocked. The water inlet channel is connected to the filter bottle cover. Since the filter element head 100 and the mounting seat 200 are detached from each other, the filter bottle 20 can be taken out of the shell, and the filter bottle cover cannot be detached from the filter bottle 20 without causing water leakage. Of course, the filter element head 100 and the filter bottle 20 can also be provided in a detachable form, and the filter element 30 can also be replaced by detaching the filter element head 100 from the filter bottle 20.

[0057] In the prior art, the connection between the filter head 100 and the mounting seat 200 is various, and a common way is to adopt a clamping structure, which is convenient but easy to damage the elastic clamping jaw of the connector or the water inlet and outlet of the filter element 30, thereby affecting the sealing performance and causing water leakage. Another way is to adopt a threaded connection, which is stable but requires rotating the filter element 30 bottle when replacing the filter element 30, which undoubtedly increases the difficulty and inconvenience of operation in a limited space. Based on this, the filter locking device 10 of the present application further includes a limiting piece 300 and a limiting sleeve 400, which cooperate with each other to enable quick installation or disassembly of the filter bottle 20.

[0058] Please refer to Figures 2 to 4 , the outer wall surface of the filter head 100 has a limiting groove 100a, the mounting seat 200 is sleeved outside the filter head 100 and can move along the axial direction of the filter head 100, and the mounting seat 200 has a mounting through hole 200a corresponding to the limiting groove 100a. The limiting piece 300 is movably arranged in the mounting through hole 200a, and the limiting sleeve 400 is sleeved outside the mounting seat 200 and can move along the axial direction of the filter head 100. After the filter head 100 and the mounting seat 200 are assembled in place, the limiting piece 300 is aligned with the mounting through hole 200a and can partially extend into the limiting groove 100a. The limiting sleeve 400 can also move along the axial direction of the filter head 100, and after the filter head 100 and the mounting seat 200 are assembled in place, the limiting sleeve 400 is moved, and after the limiting sleeve 400 and the mounting seat 200 are assembled in place, a force is applied to the outer wall surface of the limiting piece 300 to drive the limiting piece 300 to extend into the limiting groove 100a and block the limiting piece 300 from exiting the limiting groove 100a.

[0059] In order to avoid the limiting sleeve 400 and the mounting seat 200 from being separated after the mounting seat 200 and the filter head 100 are separated, please refer to Figure 2 and Figure 4 , the present application further includes a anti-dropping piece 510 protruding from the outer periphery of the mounting seat 200. The height of the anti-dropping piece 510 protruding from the mounting seat 200 is greater than the minimum interval between the mounting seat 200 and the limiting sleeve 400. In this way, under the action of the anti-dropping piece 510, after the mounting seat 200 and the filter head 100 are separated, the limiting sleeve 400 is still sleeved outside the mounting seat 200, which is convenient for the user to install and disassemble.

[0060] Optionally, the anti-dropping piece 510 is a limiting ring, which is sleeved on the outer periphery of the mounting seat 200. The limiting ring can be made of silicone or rubber, which can improve the installation efficiency of the limiting ring. Further, please refer to Figure 6The outer wall surface of the mounting seat 200 is recessed with a positioning ring groove 200f, and the limiting ring is partially embedded in the positioning ring groove 200f and partially protrudes out of the positioning ring groove 200f. In this way, the position of the anti-disengagement piece 510 on the mounting seat 200 can be ensured, and the anti-disengagement piece 510 is prevented from being displaced to affect the assembly operation of other components. In other embodiments, the anti-disengagement piece 510 can be a buckle piece that is fixed on the outer periphery of the mounting seat 200 by buckling, and the buckle piece can be multiple and arranged at intervals along the circumference of the mounting seat 200. In this application, the form of the anti-disengagement piece 510 is not limited.

[0061] In this application, the anti-disengagement piece 510 protrudes from the outer periphery of the mounting seat 200, which can prevent the limiting sleeve 400 from falling off after the mounting seat 200 is separated from the filter head 100, thereby facilitating the disassembly and assembly of the filter assembly 1. In addition, the filter head 100 and the mounting seat 200 are fixed by inserting the limiting piece 300, and then the limiting sleeve 400 is used to fix the limiting piece 300. Compared with the clamping structure, the application reduces the risk of damage to the elastic clamping jaws of the joint or the water inlet and outlet of the filter core during operation. Because the operation of the limiting piece 300 and the limiting sleeve 400 is relatively independent, it is not necessary to directly apply excessive force to the filter head 100 or the mounting seat 200. Moreover, the fixing method of the application still has good operability in a limited space. Because the movement of the limiting piece 300 and the limiting sleeve 400 is along the axial direction of the filter head 100, no additional rotation space is required, so that the device can be applied to various installation environments.

[0062] Optionally, the limiting piece 300 extends into or exits the limiting groove 100a along the radial direction of the filter head 100. In this way, the travel of the limiting piece 300 is the shortest, the resistance is smaller, and the stability of positioning is higher. Of course, the limiting piece 300 can also be arranged in an inclined or slightly inclined form, and the limiting piece 300 can be inserted into the limiting groove 100a obliquely. The application does not limit this.

[0063] In some embodiments, please refer to Figure 7 The limiting groove 100a is an annular groove arranged along the circumference of the filter head 100. In this example, the limiting piece 300 and the limiting groove 100a do not need to be positioned particularly accurately, and positioning can be achieved as long as the mounting seat 200 and the filter head 100 are moved and assembled in the axial direction. Moreover, after the limiting piece 300 extends into the limiting groove 100a, the filter head 100 and the mounting seat 200 can still be rotated to fine-tune the position.

[0064] In some embodiments, please refer to Figure 16The plurality of limiting grooves 100a are arranged at intervals in the circumferential direction of the filter head 100. The number of limiting members 300 can be one, or can be arranged to match the number of limiting grooves 100a. In this example, each limiting groove 100a provides one fixing point, enhancing the stability of the connection between the filter head 100 and the mounting seat 200.

[0065] Further, referring to Figure 5 The limiting member 300 comprises a limiting pin, which is arranged in a hemispherical shape on opposite sides in the radial direction of the filter head 100. The hemispherical design makes the limiting pin smoother when it is inserted into the limiting groove 100a of the filter head 100, reducing friction and resistance during assembly. Moreover, during assembly, the user does not need to manually operate the limiting pin. By moving the mounting seat 200 relative to the filter head 100, the limiting pin will automatically slide into the limiting groove 100a under the extrusion of the inner wall of the limiting sleeve 400, which is hemispherical, simplifying the assembly steps. When unlocking, the same does not need to be manually operated. By moving the mounting seat 200 relative to the filter head 100, the limiting pin will automatically slide out of the limiting groove 100a under the extrusion of the outer wall of the filter head 100, achieving quick and convenient unlocking.

[0066] In some embodiments, referring to Figure 6 The mounting through hole 200a comprises a first hole section 200b and a second hole section 200c arranged in sequence from the outside to the inside and in communication with each other, the diameter of the first hole section 200b is greater than that of the second hole section 200c, to form a stepped structure 200d between the first hole section 200b and the second hole section 200c, and the limiting pin comprises a first limiting part 310 and a second limiting part 320. The first limiting part 310 is movably arranged in the first hole section 200b. The second limiting part 320 is connected to the first limiting part 310 near the first end of the limiting groove 100a, the outer diameter of the second limiting part 320 is smaller than that of the first limiting part 310, so that the second limiting part 320 can pass through the second hole section 200c and extend into the limiting groove 100a, and the first limiting part 310 abuts against the step surface 200e of the stepped structure 200d. In this way, the limiting pin can be prevented from being detached from the inside of the mounting through hole 200a. The stepped structure 200d ensures the depth of the limiting pin extending into the limiting groove 100a, so that even if the groove depth of the limiting groove 100a or the limiting pin has a certain tolerance, the limiting pin can still extend into the limiting groove 100a.

[0067] For example, the slot depth of the limiting slot 100a and the limiting pin have certain tolerances during production. If the slot depth of the limiting slot 100a is too large, the limiting pin can excessively extend into the limiting slot 100a, resulting in unstable connection. If the slot depth of the limiting slot 100a is too small, the limiting pin can not completely extend into the limiting slot 100a due to the tolerance problem, or even be stuck between the outer wall surface of the filter head 100 and the inner wall surface of the limiting sleeve 400. By setting the step structure 200d, the depth of the limiting pin extending into the limiting slot 100a is ensured to be within a certain range, thereby avoiding unstable connection or jamming problem caused by too large or too small slot depth. Moreover, the step structure 200d provides a stable support point for the limiting pin, so that the limiting pin is more stable in the installation through hole 200a and is not easy to shake or fall off.

[0068] In some embodiments, please refer to Figure 8 and Figure 9 The limiting sleeve 400 includes a first sub-sleeve 410, a second sub-sleeve 420 and a third sub-sleeve 430 connected in sequence. The first sub-sleeve 410 is movably sleeved on the outer side of the mounting seat 200 along the circumference of the filter head 100. That is, the caliber of the first sub-sleeve 410 is adaptively arranged with the outer diameter of the filter head 100, and the gap therebetween is minimized, thereby ensuring the stability of the axial movement of the limiting sleeve 400 and the mounting seat 200. The inner diameter of the second sub-sleeve 420 is greater than that of the first sub-sleeve 410, and the inner diameter of the third sub-sleeve 430 is greater than that of the second sub-sleeve 420. The second sub-sleeve 420 has an inclined surface inclined from the position connected with the third sub-sleeve 430 to the position connected with the first sub-sleeve 410. In this way, during the axial movement of the limiting sleeve 400 and the mounting seat 200, the limiting pin can move into the limiting slot 100a step by step under the guidance of the inclined surface, thereby reducing the resistance between the limiting sleeve 400 and the limiting pin. After the filter head 100 and the mounting seat 200 are assembled in place, the second sub-sleeve 420 blocks the limiting member 300 from exiting the limiting slot 100a. During the axial movement of the limiting sleeve 400 and the mounting seat 200, when the third sub-sleeve 430 is opposite to the installation through hole 200a, the inner wall of the third sub-sleeve 430 and the outer wall of the limiting pin have a large space, which can enable the limiting member 300 to exit the limiting slot 100a, thereby achieving the disassembly of the filter head 100 and the mounting seat 200.

[0069] In some embodiments, please refer to Figure 4 and Figure 7The filter head 100 is provided with a first positioning structure 110. When the third sub-sleeve 430 abuts against the first positioning structure 110, the second sub-sleeve 420 abuts against the limiting member 300 along the radial direction of the filter head 100. The filter head 100 is provided with a second positioning structure 120. When the mounting seat 200 abuts against the second positioning structure 120, the limiting member 300 is located in the limiting groove 100a. In this way, the installation operation of the mounting seat 200 and the filter head 100 and the installation operation of the limiting sleeve 400 and the filter head 100 can be simplified. After the mounting seat 200 and the filter head 100 are assembled in place, the limiting member 300 is located in the limiting groove 100a. After the limiting sleeve 400 and the filter head 100 are assembled in place, the inner wall of the second sub-sleeve 420 can abut against the limiting member 300 to drive the limiting member 300 to move.

[0070] The filter head 100 can include a main body part 140 and an assembly part 150. The main body part 140 is provided with a limiting groove 100a. The assembly part 150 is connected with the main body part 140 and is used to be installed with the filter bottle 20. The outer wall surface of the assembly part 150 can be provided with a stepped shape or an arc shape to form the first positioning structure 110 and the second positioning structure 120.

[0071] Further, the end of the main body part 140 away from the assembly part 150 is provided with a foolproof structure 170. The filter head 100 can only be installed on the mounting seat 200 in a correct way, so as to avoid damage or performance degradation of the filter head 100 caused by incorrect installation or operation. The foolproof structure 170 can be formed by specific design elements such as shape, size, color, and logo, which are not limited in the present application.

[0072] In summary, the assembly operation of the present application is as follows. First, the limiting pin is installed in the mounting hole 200a from the outside of the mounting seat 200, and the limiting sleeve 400 is sleeved on the outer periphery of the mounting seat 200. Then, the anti-disengagement member 510 is installed in the positioning ring groove 200f. Next, the top of the mounting seat 200 is fixed to other fixing structures of the water purifier. Then, the filter head 100 of the filter bottle 20 is aligned with the opening of the mounting seat 200 and is inserted into the mounting seat 200. At this time, the mounting seat 200 moves relative to the filter head 100 in the direction close to the filter bottle 20. After the end of the mounting seat 200 close to the filter bottle 20 abuts against the second positioning structure 120, the limiting pin is aligned with the limiting groove 100a. Then, the limiting sleeve 400 moves relative to the filter head 100 in the direction close to the filter bottle 20. When the end of the limiting sleeve 400 close to the filter bottle 20 abuts against the first positioning structure (i.e., the third sub-sleeve 430), the inner side of the limiting sleeve 400 drives the limiting pin to extend into the limiting groove 100a, so as to relatively fix the mounting seat 200 and the filter head 100.

[0073] When disassembling, the moving direction of the limiting sleeve 400 is opposite. The limiting sleeve 400 is moved away from the filter bottle 20, and the third sub-sleeve 430 is aligned with the outer side of the limiting pin. At this time, the limiting pin is not limited, and the filter head 100 can be pulled out of the mounting seat 200. The anti-disengagement piece 510 is arranged at one end of the mounting seat 200 close to the filter bottle 20. Specifically, after assembly, the mounting seat 200 and the limiting sleeve 400 are located at the upper part of the filter head 100. After the filter head 100 and the mounting seat 200 are disassembled, in order to avoid the limiting sleeve 400 from being disengaged from the mounting seat 200 under the action of gravity, the anti-disengagement piece 510 is arranged at the lower part of the limiting sleeve 400, that is, at one end of the mounting seat 200 close to the filter bottle 20.

[0074] Further, please refer to Figure 4 The filter head 100 and the mounting seat 200 of the present application can be provided with a sealing ring 520 to improve the sealing effect of the filter head 100 and the mounting seat 200. The number of sealing rings 520 can be one or more, and multiple sealing rings 520 can be arranged between the filter head 100 and the mounting seat 200. Since the filter head 100 and the mounting seat 200 of the present application are fixed by the limiting pin, the degree of extrusion of the sealing ring 520 during assembly is small, effectively improving the service life and sealing effect of the sealing ring 520. Compared with the threaded cooperation between the traditional filter head 100 and the mounting seat 200, the latter will cause the sealing ring 520 to be repeatedly extruded during the rotating installation process, which not only may shorten the service life of the sealing ring 520, but also may affect the durability and reliability of the sealing. Therefore, the limiting pin fixing method of the present application not only optimizes the convenience and safety of the assembly process, but also improves the sealing performance.

[0075] As can be seen from the above, the limiting sleeve 400 controls the movement of the limiting pin to achieve stable installation and convenient disassembly between the filter head 100 and the mounting seat 200. During the installation and fixation of the filter head 100 and the mounting seat 200, the limiting sleeve 400 needs to be relatively stably connected with the two, so as to ensure that it can be kept in the position of preventing the limiting pin from moving. Based on this, the present application provides various fixing methods of the limiting sleeve 400, which will be described in detail below.

[0076] In some connection methods, please refer to Figures 1 to 10, the filter core locking device 10 further comprises a locking member 600, which is movably connected with the mounting seat 200 and has an unlocking state and a locking state. After the filter core head 100 and the mounting seat 200 are assembled in place, the locking member 600 can be moved to the locking state to limit the axial movement of the limiting sleeve 400 and block the limiting member 300 from exiting the limiting groove 100a. In this state, the locking member 600 effectively limits the axial movement of the limiting sleeve 400 and blocks the exit of the limiting member 300 from the limiting groove 100a, thereby ensuring the stable connection between the filter core head 100 and the mounting seat 200. Conversely, in the unlocking state, the limiting sleeve 400 can move axially relative to the mounting seat 200, which provides conditions for the smooth exit of the limiting member 300 from the limiting groove 100a. This makes the disassembly process of the filter core 30 more convenient and fast, and the user can easily complete the replacement of the filter core 30 without too much complex operation.

[0077] Of course, in other embodiments, the locking member 600 can also be fixedly connected with the mounting seat 200 in a buckle fixing manner, and the locking member 600 is buckled or unbuckled with the mounting seat 200 to switch between the locking state and the unlocking state.

[0078] In some embodiments, referring to Figure 10 , the locking member 600 comprises a handle 610 and a third limiting portion 620, the handle 610 is rotatably connected with the mounting seat 200, and the third limiting portion 620 is connected to one side of the handle 610. During the rotation of the handle 610 relative to the mounting seat 200, the third limiting portion 620 is rotated to switch between the unlocking state and the locking state, and in the locking state, the third limiting portion 620 limits the limiting sleeve 400 in the axial direction. In this application, the user can switch the state of the locking member 600 through a simple rotating action, which is simple to operate, and the locking member 600 can effectively fix the limiting sleeve 400 in the locking state.

[0079] Further, referring to Figure 6The mounting seat 200 comprises a seat body 210 and a mounting portion 220. The seat body 210 is sleeved on the filter core head 100 and is provided with a mounting through hole 200a. The mounting portion 220 is connected to the top of the seat body 210 and extends towards one side of the seat body 210. A rotating shaft is arranged on the mounting portion 220. The handle 610 comprises a rotating connecting portion 611 and a handle portion 612. The rotating connecting portion 611 is rotationally connected with the rotating shaft. The handle portion 612 is connected with one end of the rotating connecting portion 611 away from the mounting seat 200 and is arranged at an angle with the rotating connecting portion 611. The third limiting portion 620 is connected to one side of the handle portion 612 facing the mounting seat 200. In this way, the mounting of the handle 610 and the mounting seat 200 can be facilitated. The user can drive the movement of the third limiting portion 620 by operating the handle portion 612 to switch between the locked state and the unlocked state.

[0080] Further, referring to Figure 2 , the application also comprises a damping member 240, which is sleeved on the rotating shaft and is in interference fit with the handle 610 and the mounting seat 200 to provide a damping force during the rotation of the handle 610 relative to the mounting seat 200. In this way, the third limiting portion 620 can be effectively kept at the position in the unlocked state or the position in the locked state, thereby improving the stability of the unlocked state and the locked state.

[0081] In the locked state, along the axial direction, the first distance between the end of the third sleeve 430 away from the first sleeve 410 and the center of the mounting through hole 200a is greater than the second distance between the first sleeve 410 and the rotating mounting portion 220, so that when the first sleeve 410 moves to abut against the rotating mounting portion 220, the projection of the third sleeve 430 in the radial direction of the filter core head 100 can still cover the mounting through hole 200a. In this way, when the inner side of the limiting member 300 is limited by the filter core head 100 to extend out of the limiting groove 100a, the outer side of the limiting member 300 will be limited by the inner side of the third sleeve 430, avoiding the limiting member 300 from being pulled out of the mounting through hole 200a.

[0082] Optionally, referring to Figure 4 and Figure 8 , the limiting sleeve 400 is provided with a limiting groove 440 on the side close to the handle 610. In the locked state, the third limiting portion 620 is inserted into the limiting groove 440. In this way, the third limiting portion 620 will abut against the groove side wall of the limiting groove 440, and at this time, the third limiting portion 620 will be limited in the circumferential direction and the axial direction of the limiting sleeve 400, thereby improving the stability of the limiting sleeve 400 in the locked state.

[0083] In some other connection forms, referring to Figure 11 and Figure 12The embodiment of the present application further comprises an elastic member 700, which can be in the form of a spring, one end of which is connected to the mounting seat 200 and the other end of which is connected to the limiting sleeve 400, for pressing the limiting sleeve 400 against the filter core head 100. Of course, in other embodiments, the elastic member 700 can also be in the form of a tension spring, which is not limited in the present application. In the present application, the spring can automatically press the limiting sleeve 400 against the filter core head 100, and the limiting sleeve 400 can always maintain close contact with the filter core head 100 without the need for additional human pressure, thereby improving the stability of the limiting member 300 fixed in the limiting groove 100a and the sealing between the mounting seat 200 and the filter core head 100. Moreover, due to the automatic pressing effect of the elastic member 700, the user can operate more simply when installing or dismounting the filter core 30. In addition, when the elastic member 700 is worn or fails due to long-term use, the user can easily replace it with a new elastic member 700, thereby prolonging the service life of the filter core locking device 10.

[0084] Please refer to Figure 11 and Figure 12 The mounting seat 200 further comprises a fifth limiting portion 250 connected to the outer wall surface of the seat body 210 and arranged in a spaced manner with the mounting through hole 200a and exposed outside the limiting sleeve 400; wherein the fifth limiting portion 250 is arranged at the end of the mounting seat 200 away from the filter bottle 20. The opposite ends of the spring abut against the fifth limiting portion 250 and the limiting sleeve 400, respectively. The fifth limiting portion 250 provides a stable support point for the spring. This design ensures that the spring can correctly function and will not fail due to improper position or uneven force.

[0085] Optionally, please refer to Figure 11 and Figure 12 The fifth limiting portion 250 is in the form of an annular structure arranged around the outer wall surface of the mounting seat 200. In this way, the contact area of the spring and the fifth limiting portion 250 can be improved, thereby improving the stability of the spring. Of course, in other embodiments, the fifth limiting portion 250 can be in the form of a plurality of small protrusions arranged in a spaced manner, or in the form of one or two arc-shaped protrusions, which are not limited in the present application.

[0086] In still other connection modes, the limiting sleeve 400 and the filter core head 100 or the mounting seat 200 are fixed in a screwing manner to block the limiting member 300 from exiting the limiting groove 100a after the filter core head 100 and the mounting seat 200 are assembled in place. For example, in the present application, the limiting sleeve 400 and the filter core head 100 are fixed in a screwing manner.

[0087] In some structural forms, please refer to Figures 13 to 16The inner wall surface of the limiting sleeve 400 is provided with a first screw buckle 450, wherein the first screw buckle 450 can be arranged on the inner wall surface of the third sub-sleeve 430. The outer wall of the filter core head 100 is provided with a second screw buckle 130, wherein the second screw buckle 130 can be arranged on the outer wall surface of the assembly part 150 of the filter core head 100. The second screw buckle 130 comprises a connecting part 131 and a fourth limiting part 132 connected with each other, the connecting part 131 is connected to the outer wall surface of the filter core head 100 and is arranged at an angle with the fourth limiting part 132, and the connecting part 131, the fourth limiting part 132 and the outer wall surface of the filter core head 100 jointly define a screw buckle groove 130a; the first screw buckle 450 can be buckled into or out of the screw buckle groove 130a in a rotatable manner, and through the rotation buckling of the first screw buckle 450 and the second screw buckle 130, the firm connection between the limiting sleeve 400 and the filter core head 100 can be ensured, the accidental movement of the limiting sleeve 400 after the filter core head 100 and the mounting seat 200 are assembled in place is prevented, and the stability of the limiting part 300 extending into the limiting groove 100a is ensured. The connection mode provided by the application is simple, the screw buckle stroke is short, and a large space is not required and is stable and reliable.

[0088] Of course, in other embodiments, a groove can be arranged on the outer wall of the filter core head 100, and then a second screw buckle 130 is arranged on the groove side wall, and the first screw buckle 450 described above is arranged on the outer wall surface of the limiting sleeve 400, and in this regard, the specific positions of the first screw buckle 450 and the second screw buckle 130 are not limited in the application.

[0089] Optionally, please refer to Figure 15 The first screw buckle 450 is in a block structure. Of course, in other embodiments, the first screw buckle 450 can also be arranged in the form of the second screw buckle 130.

[0090] In the drawings of the embodiment, the same or similar reference numerals correspond to the same or similar parts; in the description of the utility model, it should be understood that if the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, the terms describing the position relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the utility model, and for ordinary skilled persons in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0091] The above is only a preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A filter cartridge lock, characterized by, The filter head has a limiting slot. The mounting seat is sleeved on the filter head and can move axially relative to the filter head. The limiting member is movably arranged in the mounting hole and partially extends into the limiting slot after the filter head and the mounting seat are assembled in place. The limiting sleeve is sleeved on the mounting seat and can move axially relative to the filter head. The anti-disengagement member is protruded on the outer periphery of the mounting seat and is used to prevent the limiting sleeve from disengaging from the mounting seat after the mounting seat and the filter head are separated. One end of the filter head is used to be mounted with a filter bottle. The anti-disengagement member is a limiting ring which is sleeved on the outer periphery of the mounting seat.

2. The cartridge lockout of claim 1, wherein The outer wall surface of the mounting seat is recessed with a positioning ring groove, and the limiting ring is partially embedded in the positioning ring groove and partially protruded outside the positioning ring groove.

3. The cartridge lockout of claim 2, wherein The limiting member extends into or exits from the limiting slot along the radial direction of the filter head.

4. The cartridge lock of claim 3 wherein, The limiting member includes a limiting pin which is hemispherical on both sides along the radial direction of the filter head.

5. The filter cartridge lock of claim 1 wherein, The mounting hole includes a first hole section and a second hole section which are sequentially arranged from outside to inside and are in communication with each other.

6. The cartridge lockout of claim 5, wherein The first hole section has a larger diameter than the second hole section to form a stepped structure between the first hole section and the second hole section.

7. The cartridge lockout of claim 6 wherein, The limiting pin includes a first limiting part movably arranged in the first hole section and a second limiting part connected to the first limiting part and close to the first end of the limiting slot. The second limiting part has an outer diameter smaller than that of the first limiting part so that the second limiting part can pass through the second hole section and extend into the limiting slot, and the first limiting part abuts against the stepped surface of the stepped structure. The limiting slot is an annular slot arranged along the circumferential direction of the filter head.

8. The cartridge lockout of claim 1, wherein The limiting slot is arranged in multiple and is arranged at intervals along the circumferential direction of the filter head.

9. The cartridge lockout of claim 1, wherein The limiting sleeve includes a first sub-sleeve movably sleeved on the mounting seat along the circumferential direction of the filter head, a second sub-sleeve connected to the first sub-sleeve and having an inner diameter larger than that of the first sub-sleeve, and a third sub-sleeve connected to the second sub-sleeve away from the first sub-sleeve and having an inner diameter larger than that of the second sub-sleeve.

10. The cartridge lock apparatus of any one of claims 1 to 9, wherein, The filter head is provided with a first positioning structure, and when the third sub-sleeve abuts against the first positioning structure, the second sub-sleeve abuts against the limiting member along the radial direction of the filter head. The filter head is provided with a second positioning structure, and when the mounting seat abuts against the second positioning structure, the limiting member is located in the limiting slot. ​ ​ 11. The cartridge lockout of claim 10, wherein, ​ 12. The cartridge lock apparatus of any one of claims 1 to 9, wherein, ​ 13. A filter cartridge assembly characterized by, ​ The filter cartridge locking device according to any one of claims 1 to 12; A filter bottle to which the filter cartridge head is attached at one end; and A filter cartridge installed in the filter bottle.

14. A water purifier characterized by comprising: Comprising: A housing having an attachment opening; And The filter cartridge assembly according to claim 13, wherein the attachment seat is provided in the housing, the filter bottle is detachably attached to the housing through the filter cartridge head, and the filter bottle and the filter cartridge head are accessible to and from the housing through the attachment opening.

Images