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 filter element head is sleeved with the mounting base, the mounting base can move in the axial direction of the filter element head, and the mounting base 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 base in a sleeving mode and can move in the axial direction of the filter element head, and after the filter element head and the mounting base are assembled in place, the limiting sleeve prevents the limiting piece from retreating from the limiting groove. According to the filter element, 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 using for a period of time, in order to maintain good filtering effect, the filter core needs to be replaced. In the process of replacing the filter core, the filter core bottle needs to be taken out from the shell of the water purifier, at this time, the filter core head of the filter core bottle needs to be disassembled with the mounting seat arranged in the shell.

[0003] In the prior art, the connection mode between the filter core head and the mounting seat is various, one common mode is to adopt a clamping structure, although it is convenient, but improper operation can damage the elastic clamping jaw of the joint or the water inlet and outlet of the filter core, and further affect the sealing performance, leading to water leakage problem. Another mode is to adopt threaded connection, although the connection is stable, but the filter core bottle needs to be rotated when replacing the filter core, which undoubtedly increases the difficulty and inconvenience of operation in the case of limited space. SUMMARY

[0004] The application provides a filter core locking device, a filter core subassembly and a water purifier, which can improve the sealing performance of the filter core head and the mounting seat, and realize convenient installation and 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 along the axial direction of the filter core head, and the mounting seat has a mounting through hole corresponding to the limiting groove; the limiting piece is movably arranged 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 along the axial direction of the filter core head, and the limiting sleeve blocks the limiting piece from exiting the limiting groove after the filter core head and the mounting seat are assembled in place.

[0006] In some embodiments, the limiting piece extends into or exits the limiting groove along the radial direction of the filter core head.

[0007] In some embodiments, the limiting piece comprises a limiting pin, and the two sides of the limiting pin along the radial direction of the filter core head are both provided in a hemispherical surface.

[0008] In some embodiments, the mounting hole comprises a first hole section and a second hole section arranged in sequence from outside to inside and in communication with each other, a 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:

[0009] a first limiting part movably arranged in the first hole section; and

[0010] a second limiting part connected to the first limiting part close to a first end of the limiting groove, an outer diameter of the second limiting part is less 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 groove, and the first limiting part abuts against a step surface of the stepped structure.

[0011] In some embodiments, the limiting groove is an annular groove arranged along a circumference of the filter head.

[0012] In some embodiments, a plurality of limiting grooves are arranged at intervals along the circumference of the filter head.

[0013] In some embodiments, the limiting sleeve comprises:

[0014] a first sub-sleeve movably sleeved outside the mounting seat along the circumference of the filter head;

[0015] a second sub-sleeve connected to the first sub-sleeve, an inner diameter of the second sub-sleeve is greater than that of the first sub-sleeve, after the filter head and the mounting seat are assembled in place, the limiting sleeve blocks the limiting part from exiting the limiting groove; and

[0016] a third sub-sleeve connected to the second sub-sleeve away from the first sub-sleeve, an 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 hole, the limiting part can exit the limiting groove.

[0017] In some embodiments, the filter head is provided with a first positioning structure, when the third sub-sleeve abuts against the first positioning structure, the second sub-sleeve abuts against the limiting part along an axial direction of the filter head.

[0018] 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 part is located in the limiting groove.

[0019] In some embodiments, further comprising: an anti-disengagement part protruding from an outer circumference of the mounting seat, for preventing the limiting sleeve from disengaging from the mounting seat after the mounting seat and the filter head are separated.

[0020] In some embodiments, the anti-extraction piece is a limiting ring, which is sleeved on the outer periphery of the mounting seat.

[0021] In a second aspect, the embodiments of the present application provide a filter element assembly, comprising:

[0022] The filter element locking device as described above;

[0023] A filter bottle, wherein the filter element head is mounted at one end of the filter bottle; and

[0024] A filter element, which is mounted in the filter bottle.

[0025] In a third aspect, the embodiments of the present application provide a water purifier, comprising:

[0026] A housing, which has a mounting opening; and

[0027] The filter element assembly as described above, wherein the mounting seat is arranged in the housing, the filter bottle is detachably mounted in the housing through the filter element head, and the filter bottle and the filter element head can enter and exit the housing from the mounting opening.

[0028] Based on the filter element locking device, the filter element assembly and the water purifier of the embodiments of the present application, the outer wall surface of the filter element head has a limiting groove, the mounting seat is sleeved on the filter element head and can move along the axial direction of the filter element head, and the mounting seat has a mounting through hole corresponding to the limiting groove. The limiting piece is movably arranged in the mounting through hole, the limiting sleeve is sleeved on the mounting seat and can move along the axial direction of the filter element head. After the filter element head and the mounting seat are assembled in place, the limiting piece is aligned with the mounting through hole and can partially extend into the limiting groove. The limiting sleeve can also move along the axial direction of the filter element head, and after the limiting sleeve is moved after the filter element head and the mounting seat are assembled in place, the limiting sleeve can exert a force on the outer wall surface of the limiting piece to drive the limiting piece to extend into the limiting groove and block the limiting piece from exiting the limiting groove.

[0029] In the present application, the filter element head and the mounting seat are fixed by inserting the limiting piece, and then the limiting sleeve is used to fix the limiting piece. Compared with the clamping structure, the present application reduces the risk of damage to the elastic clamping jaws of the connector or the water inlet / outlet of the filter element during operation. Because the operation of the limiting piece and the limiting sleeve is relatively independent, it is not necessary to directly exert excessive force on the filter element head or the mounting seat. Moreover, the fixing method of the present application still has good operability in the case of limited space. Because the movement of the limiting piece and the limiting sleeve is along the axial direction of the filter element head, no additional rotation space is required, so that the device can be applied to various installation environments. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. 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 be obtained according to the structures shown in these drawings without creative labor.

[0031] Figure 1 The structural schematic diagram of the filter element assembly of the first embodiment provided by the embodiment of the present application is shown in the figure.

[0032] Figure 2 The exploded schematic diagram of the filter element assembly of the first embodiment provided by the embodiment of the present application is shown in the figure.

[0033] Figure 3 The cross-sectional schematic diagram of the filter element assembly of the first embodiment provided by the embodiment of the present application is shown in the figure.

[0034] Figure 4 The structural schematic diagram of the filter element assembly of the first embodiment provided by the embodiment of the present application is shown in the figure. Figure 3 The enlarged schematic diagram of A in the figure.

[0035] Figure 5 The structural schematic diagram of the limiting piece provided by the embodiment of the present application is shown in the figure.

[0036] Figure 6 The structural schematic diagram of the mounting seat provided by the embodiment of the present application is shown in the figure.

[0037] Figure 7 The structural schematic diagram of the filter element head provided by the embodiment of the present application is shown in the figure.

[0038] Figure 8 The structural schematic diagram of the limiting sleeve provided by the embodiment of the present application is shown in the figure.

[0039] Figure 9 The cross-sectional schematic diagram of the limiting sleeve provided by the embodiment of the present application is shown in the figure.

[0040] Figure 10 The structural schematic diagram of the locking piece provided by the embodiment of the present application is shown in the figure.

[0041] Figure 11 The structural schematic diagram of the filter element assembly of the second embodiment provided by the embodiment of the present application is shown in the figure.

[0042] Figure 12 The exploded schematic diagram of the filter element assembly of the second embodiment provided by the embodiment of the present application is shown in the figure.

[0043] Figure 13 The first exploded schematic diagram of the filter element assembly of the third embodiment provided by the embodiment of the present application is shown in the figure.

[0044] Figure 14A second exploded schematic view of the filter element assembly of the third embodiment provided in the embodiments of the present application is shown in FIG. 7B.

[0045] Figure 15 A structure schematic view of the limiting sleeve of the filter element assembly of the third embodiment provided in the embodiments of the present application is shown in FIG. 8.

[0046] Figure 16 A structure schematic view of the filter element head of the filter element assembly of the third embodiment provided in the embodiments of the present application is shown in FIG. 9.

[0047] BRIEF DESCRIPTION OF THE DRAWINGS

[0048] 1, filter element assembly; 10, filter element locking device; 100, filter element 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, rotating connecting part; 612, handle part; 620, third limiting part; 700, elastic piece; 20, filter bottle; 30, filter element.

[0049] The realization, 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 purpose, technical scheme 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 implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with the present application as detailed in the appended claims.

[0052] In the description of the utility model, it is understood that the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. In addition, in the description of the utility model, "multiple" refers to two or more than two, and "and / or" describes the association between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can mean that there are three kinds of situations, namely, A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[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 the utility model belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0054] The utility model embodiment proposes a kind of water purifier. Water purifier includes shell and filter core component 1. Shell has installation opening, and filter core component 1 passes through installation opening and enters the interior space of shell.

[0055] Please refer to Figure 1 And Figure 2 , filter core component 1 includes filter core locking device 10, filter bottle 20 and filter core 30. Filter core 30 is installed in filter bottle 20, and filter core locking device 10 includes filter core head 100 and mounting seat 200. Wherein, filter core head 100 is installed to one end of filter bottle 20 and blocks the bottle mouth of filter bottle 20. Mounting seat 200 is arranged in shell, and filter core head 100 is detachably connected with mounting seat 200, and filter bottle 20 is detachably installed in shell by filter core head 100. Wherein, the end of filter bottle 20 away from filter core head 100 is connected with water inlet waterway, and filter core head 100 is connected with water outlet waterway by mounting seat 200, and waterway realizes the filtering effect by filter core 30. When water purifier is used for a period of time, filter core head 100 and mounting seat 200 can be disassembled, and then the whole filter bottle 20 and internal filter core 30 are replaced. Understandably, the direction of water inlet waterway and water outlet waterway can be replaced and arranged, that is, filter core head 100 can be connected with water inlet waterway by mounting seat 200, and the end of filter bottle 20 away from filter core head 100 can be connected with water outlet waterway.

[0056] Optionally, the filter bottle 20 can be provided with a filter bottle cover which can be screwed off at the end away from the filter head 100. When the filter bottle cover is screwed off, the bottle opening of the filter bottle 20 is opened, and then the filter cartridge 30 can be replaced through the bottle opening. The filter bottle cover is screwed on the filter bottle 20 again to seal the bottle opening. The water inlet channel is connected to the filter bottle cover. Since the filter head 100 and the mounting seat 200 are detachable, the filter bottle 20 can be taken out of the shell, and the filter bottle cover cannot be removed from the filter bottle 20 without leaking. Of course, the filter head 100 and the filter bottle 20 can also be provided in a detachable form, and the filter cartridge 30 can also be replaced by detaching the filter 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. One common way is to use a clamping structure, which is convenient but can easily damage the elastic clamping jaw of the connector or the water inlet and outlet of the filter cartridge 30, thereby affecting the sealing performance and causing water leakage. Another way is to use a threaded connection, which is stable but requires rotating the filter cartridge 30 bottle when replacing the filter cartridge 30, which undoubtedly increases the difficulty and inconvenience of operation in a limited space. Based on this, the filter cartridge locking device 10 of the present application further comprises a limiting piece 300 and a limiting sleeve 400, which cooperate with each other to enable the filter bottle 20 to be quickly installed or detached.

[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 on the outside of 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 on the outside of 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. After the filter head 100 and the mounting seat 200 are assembled in place, the limiting sleeve 400 is moved, and the limiting sleeve 400 and the mounting seat 200 are assembled in the process of applying force to the outer wall surface of the limiting piece 300 to drive the limiting piece 300 to extend into the limiting groove 100a. After the limiting sleeve 400 and the mounting seat 200 are assembled in place, the limiting piece 300 is blocked from exiting the limiting groove 100a.

[0059] In the present application, the filter head 100 and the mounting seat 200 are fixed by inserting the limiting piece 300 and then fixing the limiting piece 300 by the limiting sleeve 400. Compared with the clamping structure, the present application reduces the damage risk of the elastic clamping jaw of the joint or the water inlet and outlet of the filter element during operation. Because the operation of the limiting piece 300 and the limiting sleeve 400 is relatively independent, it is not necessary to directly exert excessive force on the filter head 100 or the mounting seat 200. Moreover, the fixing mode of the present application still has good operability in the case of 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, additional rotation space is not required, so that the device can be applied to various installation environments.

[0060] Optionally, the limiting piece 300 extends into or exits from 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 positioning stability is higher. Of course, the limiting piece 300 can also be provided in an inclined or slightly inclined form, and the limiting piece 300 can be inserted into the limiting groove 100a obliquely. The present application does not limit this.

[0061] In some embodiments, please refer to Figure 7 The limiting groove 100a is an annular groove arranged along the circumferential direction 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. As long as the mounting seat 200 and the filter head 100 are moved and assembled in the axial direction, the positioning can be achieved. 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.

[0062] In some embodiments, please refer to Figure 16 The limiting groove 100a is provided with a plurality of limiting grooves 100a, which are arranged at intervals in the circumferential direction of the filter head 100. The number of limiting pieces 300 can be one or can be adaptively arranged according to the number of limiting grooves 100a. In this example, each limiting groove 100a can provide a fixing point, which enhances the connection stability between the filter head 100 and the mounting seat 200.

[0063] Further, please refer to Figure 5The limiting member 300 includes a limiting pin, which is provided in a hemispherical surface on opposite sides of the radial direction of the filter head 100. The design of the hemispherical surface makes the limiting pin more smooth when being driven by the limiting sleeve 400 and extending into the limiting groove 100a of the filter head 100, reducing the friction and resistance in the assembly process. Moreover, in the assembly process, the user does not need to manually operate the limiting pin, but only needs to move the mounting seat 200 relative to the filter head 100. Since the outer wall surface of the limiting pin is a hemispherical surface, the limiting pin will automatically slide into the limiting groove 100a under the extrusion of the inner wall surface of the limiting sleeve 400, simplifying the assembly steps. When unlocking, it also does not need to be manually operated, but only needs to move 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 surface of the filter head 100, achieving quick and convenient unlocking.

[0064] In some embodiments, referring to Figure 6 The mounting through hole 200a includes a first hole section 200b and a second hole section 200c which are sequentially arranged from outside to inside and are in communication with each other, the diameter of the first hole section 200b is greater than that of the second hole section 200c, so as to form a stepped structure 200d between the first hole section 200b and the second hole section 200c, and the limiting pin includes a first limiting part 310 and a second limiting part 320 which are connected. 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, and 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 separated from the inside of the mounting through hole 200a, and the depth of the limiting pin extending into the limiting groove 100a is ensured by the stepped structure 200d, 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.

[0065] For example, the groove depth of the limiting groove 100a and the limiting pin both have a certain tolerance in the production process. If the groove depth of the limiting groove 100a is too large, the limiting pin may be excessively extended, resulting in unstable connection. If the groove depth of the limiting groove 100a is too small, the limiting pin may be stuck between the outer wall surface of the filter head 100 and the inner wall surface of the limiting sleeve 400 due to the tolerance problem. By setting the stepped structure 200d, the depth of the limiting pin extending into the limiting groove 100a is ensured within a certain range, thereby avoiding unstable connection or sticking caused by too large or too small groove depth. Moreover, the stepped structure 200d provides a stable support point for the limiting pin, making it more firm in the mounting through hole 200a and less likely to shake or fall off.

[0066] In some embodiments, please refer to Figure 8 and Figure 9 The limiting sleeve 400 comprises 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 a slope 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 step by step into the limiting groove 100a under the guidance of the slope, 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 groove 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 mounting 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 groove 100a, thereby achieving the disassembly of the filter head 100 and the mounting seat 200. Further, the interval between the third sub-sleeve 430 and the limiting pin is smaller than the length of the limiting pin, so that the third sub-sleeve 430 can limit the limiting pin from disengaging from the mounting through hole 200a.

[0067] In some embodiments, please refer to Figure 4 and Figure 7 The filter head 100 is provided with a first positioning structure 110, and 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, and 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, and it can be ensured that 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, and 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.

[0068] The filter head 100 can include a main body 140 and an assembly portion 150. The main body 140 is provided with a limiting groove 100a. The assembly portion 150 is connected with the main body 140 and is used to be mounted with the filter bottle 20. The outer wall surface of the assembly portion 150 can be provided with a step shape or an arc shape to form the first positioning structure 110 and the second positioning structure 120.

[0069] Further, the main body 140 is provided with a foolproof structure 170 at the end away from the assembly portion 150, which ensures that the filter head 100 can only be installed on the mounting seat 200 in the correct way, avoiding damage or performance degradation of the filter head 100 caused by incorrect installation or operation. The foolproof structure 170 can be formed by specific shape, size, color, logo and other design elements, which are not limited in the present application.

[0070] In order to avoid the limiting sleeve 400 from being separated from the mounting seat 200 after the mounting seat 200 is separated from the filter head 100, please refer to Figure 2 and Figure 4 The present application also includes a separation-preventing piece 510, which is protruded from the outer periphery of the mounting seat 200. The height of the separation-preventing piece 510 protruded from the mounting seat 200 is greater than the minimum interval between the mounting seat 200 and the limiting sleeve 400 (i.e. the interval between the first sub-sleeve 410 and the mounting seat 200). In this way, under the action of the separation-preventing piece 510, after the mounting seat 200 is separated from the filter head 100, the limiting sleeve 400 is still sleeved outside the mounting seat 200.

[0071] Optionally, the separation-preventing 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 silica gel or rubber, which can improve the installation efficiency of the limiting ring. Further, please refer to Figure 6 The outer wall surface of the mounting seat 200 is recessed with a limiting ring groove 200f, and the limiting ring is partially embedded in the limiting ring groove 200f and partially protruded outside the limiting ring groove 200f. In this way, the position of the separation-preventing piece 510 on the mounting seat 200 can be ensured, and the separation-preventing piece 510 can be prevented from being displaced to affect the assembly operation of other components. In other embodiments, the separation-preventing piece 510 can be a buckle, which is fixed on the outer periphery of the mounting seat 200. The buckle can have multiple and be arranged at intervals along the circumference of the mounting seat 200. In this regard, the present application does not specifically limit the form of the separation-preventing piece 510.

[0072] In summary, the assembly operation of the present application is to first install the limiting pin into the mounting hole 200a from the outside of the mounting seat 200, then fit the limiting sleeve 400 around the outer periphery of the mounting seat 200, and then install the anti-disengagement piece 510 into the positioning ring groove 200f. Then the top of the mounting seat 200 is fixed to other fixing structures of the water purifier. Then the filter core head 100 of the filter bottle 20 is aligned with the open end of the mounting seat 200 and inserted into the mounting seat 200. At this time, the mounting seat 200 moves relative to the filter core head 100 towards the filter bottle 20, and 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 is moved relative to the filter core head 100 towards the filter bottle 20, and after the end of the limiting sleeve 400 close to the filter bottle 20 (i.e. the third sub-sleeve 430) abuts against the first positioning structure 110, 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 core head 100.

[0073] When disassembling, the moving direction of the limiting sleeve 400 is opposite. The third sub-sleeve 430 is aligned with the outer side of the limiting pin, and at this time, the limiting pin is not limited, so the filter core head 100 can be pulled out of the mounting seat 200. The anti-disengagement piece 510 is arranged at the 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 core head 100. After the filter core head 100 and the mounting seat 200 are disassembled, in order to avoid the limiting sleeve 400 from disengaging 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, i.e. at the end of the mounting seat 200 close to the filter bottle 20.

[0074] Further, referring to Figure 4 The filter core 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 core 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 at intervals between the filter core head 100 and the mounting seat 200. Since the filter core head 100 and the mounting seat 200 of the present application are fixed by limiting pins, 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 core 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] 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. In the process of installing and fixing 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 a position to prevent the limiting pin from moving. Based on this, the application provides various fixing modes of the limiting sleeve 400, which will be described in detail below.

[0076] In some connection modes, please refer to Figures 1 to 10 The filter 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 head 100 and the mounting seat 200 are assembled in place, the locking member 600 can move 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 free movement of the limiting sleeve 400 in the axial direction and blocks the exit of the limiting member 300 from the limiting groove 100a, thereby ensuring the stable connection between the filter head 100 and the mounting seat 200. On the contrary, 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 30 more convenient and quick, and the user can easily complete the replacement of the filter 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 with the mounting seat 200 or removed to switch between the locking state and the unlocking state.

[0078] In some embodiments, please refer 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 the 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, please refer 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 core locking device comprises: a filter core head provided with a limiting groove; a mounting seat sleeved outside the filter core head and capable of moving along the axial direction of the filter core head, the mounting seat being provided with a mounting through hole corresponding to the limiting groove; a limiting member movably sleeved in the mounting through hole, and part of the limiting member extending into the limiting groove after the filter core head and the mounting seat are assembled in place; and a limiting sleeve sleeved outside the mounting seat and capable of moving along the axial direction of the filter core head, the limiting sleeve blocking the limiting member from exiting the limiting groove after the filter core head and the mounting seat are assembled in place.

2. The cartridge lockout of claim 1, wherein The limiting member extends into or exits the limiting groove along the radial direction of the filter core head.

3. The cartridge lockout of claim 2, wherein, The limiting member comprises a limiting pin, and the limiting pin is provided with a hemispherical surface on each side opposite to each other along the radial direction of the filter core head.

4. The cartridge lock of claim 3 wherein, 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 being greater than that of the second hole section to form a stepped structure between the first hole section and the second hole section, and the limiting pin comprising: a first limiting part movably sleeved in the first hole section; and a second limiting part connected to the first end of the first limiting part close to the limiting groove, the outer diameter of the second limiting part being 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 groove, and the first limiting part abuts against the step surface of the stepped structure.

5. The cartridge lockout of claim 1, wherein The limiting groove is an annular groove arranged along the circumferential direction of the filter core head.

6. The filter cartridge lock of claim 1 wherein, A plurality of limiting grooves are arranged at intervals along the circumferential direction of the filter core head.

7. The cartridge lockout of claim 1, wherein The limiting sleeve comprises: a first sub-sleeve movably sleeved outside the mounting seat along the circumferential direction of the filter core head; a second sub-sleeve connected to the first sub-sleeve, the inner diameter of the second sub-sleeve being greater than that of the first sub-sleeve, so that the limiting sleeve blocks the limiting member from exiting the limiting groove after the filter core head and the mounting seat are assembled in place; and a third sub-sleeve connected to the side of the second sub-sleeve away from the first sub-sleeve, the inner diameter of the third sub-sleeve being greater than that of the second sub-sleeve, so that the limiting member can exit the limiting groove when the third sub-sleeve is opposite to the mounting through hole.

8. The cartridge lockout of claim 7, wherein The filter core head is provided with a first positioning structure, and the second sub-sleeve abuts against the limiting member along the axial direction of the filter core head when the third sub-sleeve abuts against the first positioning structure.

9. The cartridge lockout of claim 1, wherein The filter core head is provided with a second positioning structure, and the limiting member is located in the limiting groove when the mounting seat abuts against the second positioning structure.

10. The cartridge lock apparatus of any one of claims 1-9, wherein, Further comprising: an anti-disengagement member protruding from the outer periphery of the mounting seat, used for preventing the limiting sleeve from disengaging from the mounting seat after the mounting seat and the filter core head are separated.

11. The cartridge lockout of claim 10, wherein, The anti-disengagement member is a limiting ring, and the limiting ring is sleeved on the outer periphery of the mounting seat.

12. A filter cartridge assembly characterized by, The filter core locking device comprises: the filter core locking device according to any one of claims 1 to 10; a filter bottle, the filter core head being mounted at one end of the filter bottle; and a filter core mounted in the filter bottle.

13. A water purifier characterized by comprising: The filter core locking device comprises: a housing provided with a mounting opening; and ​ A filter cartridge assembly as set forth in claim 12, said mounting seat being disposed within said housing, said filter bottle being removably mounted within said housing by said filter cartridge head, said filter bottle and said filter cartridge head being accessible to said housing from said mounting opening.

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