Filter element replacement unlocking device and water purifier comprising same

Abstract

The utility model discloses a filter element replacement unlocking device and a water purifier comprising the same, the filter element replacement unlocking device is used for locking or unlocking a filter element in a shell, the filter element replacement unlocking device comprises a spiral button, a connecting wire and a buckling part, the buckling part is located between the filter element and the shell, and the connecting wire is connected with the spiral button. The buckle component is connected to the outer surface of the filter element in a buckled mode, one end of the connecting wire is wound around the spiral button, the other end of the connecting wire is connected to the buckle component, the spiral button penetrates through the shell, and the spiral button can rotate in the shell, so that winding of the connecting wire drives the buckle component to move in the direction away from the filter element; therefore, the buckle component is separated from the filter element, and the filter element is unlocked from the shell. The user can replace the filter element simply, conveniently, quickly, time-saving and labor-saving, the unlocking mode is simple, each user can independently replace the filter element, the risk of water leakage is greatly reduced, the service life of the water purifier is prolonged, and personnel and property safety threats caused by water leakage are avoided.

Description

Technical Field

[0001] This utility model relates to a filter cartridge replacement and unlocking device and a water purifier containing the same. Background Technology

[0002] Currently, most water purifiers on the market use a screw-in, rotating design for filter replacement. The filter cartridge is secured to the water circuit board via a rotating clip at the bottom. The locking mechanism is concentrated near the water circuit board, which is one of the main pressure points during use. The rotating disc within the water circuit board, which mates with the filter cartridge, deforms under pressure. Traditional filter replacement methods require aligning the filter cartridge's inlet and outlet with the water circuit board before rotating it. Frequent rotations can cause misalignment of the seal between the rotating disc and the water circuit board, leading to leaks and seriously impacting user experience and safety. This method is also laborious, requiring force to tighten, making it difficult for every user to replace the cartridge independently. The exposed filter installation handle also detracts from the overall aesthetics of the water purifier. Frequent rotation during filter replacement can cause breakage at the water circuit board outlet or misalignment of the seal under the water circuit board, increasing the risk of leaks. Furthermore, the filter replacement method is difficult for first-time users, hindering independent filter replacement. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology, such as the filter replacement method being difficult to master, laborious, and increasing the risk of water leakage, and to provide a filter replacement unlocking device and a water purifier containing the same.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A filter cartridge replacement and unlocking device is disclosed, used to lock or unlock a filter cartridge within a housing. The device includes a spiral button, a connecting wire, and a latching component. The latching component is located between the filter cartridge and the housing, and is latched to the outer surface of the filter cartridge to lock it within the housing. One end of the connecting wire is wound around the spiral button, and the other end is connected to the latching component. The spiral button passes through the housing and is rotatable within the housing, causing the connecting wire to wound around and move the latching component away from the filter cartridge, thereby disengaging the latching component from the outer surface of the filter cartridge and unlocking the filter cartridge from the housing.

[0006] In this solution, the aforementioned structural form is adopted. The spiral button rotates within the outer casing, causing the connecting wires and latching components to move, thereby unlocking the filter cartridge from the outer casing. Users only need to apply force to the spiral button to unlock the filter cartridge, making filter cartridge replacement simple, quick, time-saving, and labor-saving. The simple unlocking method allows each user to replace the filter cartridge independently. The increased force points and force area during unlocking, coupled with the fact that the water circuit board is not under stress, greatly reduces the risk of leakage, extends the service life of the water purifier, improves the user experience, and avoids safety threats to personnel and property caused by leakage.

[0007] Preferably, the outer casing has a perforation, the spiral button passes through the perforation, the outer peripheral surface of the spiral button has a spiral guide portion, the inner wall surface of the perforation has a spiral matching portion, the spiral guide portion is connected to the spiral matching portion and can move on the spiral matching portion, so that the spiral button can move and rotate along the axial direction close to the filter element within the perforation.

[0008] In this solution, the above-mentioned structure is adopted. When unlocking, the user presses on the spiral button, which allows the spiral button to move axially near the filter element within the perforation. The spiral guide moves on the spiral matching part, causing the spiral button to rotate while moving axially within the perforation. This achieves the winding of the connecting wire and drives the buckle component to move away from the filter element, thereby unlocking the filter element from the outer shell. Rotation is relatively laborious, making filter replacement time-saving and labor-saving.

[0009] Preferably, the snap-fit ​​component includes an elastic clip, the outer surface of the filter element has an outwardly protruding snap-fit ​​portion, the inner wall surface of the elastic clip is attached to the outer surface of the filter element, and the elastic clip is snapped to the snap-fit ​​portion, and the connecting line is connected to the outer surface of the elastic clip.

[0010] In this solution, the aforementioned structural form is adopted, with the elastic clip snapping onto the snap-fit ​​part and applying force to the filter element, thereby preventing the filter element from detaching from the housing. The elastic clip and the filter element fit together, making the snap-fit ​​connection between them stable and reliable, and the overall structure is simple.

[0011] Preferably, the snap-fit ​​component further includes a compression spring, the two ends of which abut against the elastic clip and the inner wall surface of the housing, respectively, so that the compression spring applies a force to the elastic clip along the proximity to the filter element.

[0012] In this solution, the aforementioned structure is used. The compression spring acts on the elastic clip, causing the clip and the filter element to fit together and lock into place, achieving high connection stability. Simultaneously, the compression spring has a reset function. After unlocking and replacing the filter element, when the user applies no force to the screw button, the compression spring applies force to the elastic clip, causing the inner wall of the clip to fit against the replaced filter element, thus locking the filter element inside the housing; and the connecting wire and screw button will return to their initial state.

[0013] Preferably, the inner wall of the housing has a limiting post that extends into the compression spring.

[0014] In this solution, the above-mentioned structural form is adopted. The limiting post has a limiting function. By extending into the compression spring, the limiting post can limit the compression spring and prevent the compression spring from moving, thus achieving higher stability.

[0015] Preferably, the elastic clip includes a transverse snap-fit ​​portion and a longitudinal connecting portion, both of which are attached to the outer surface of the filter element;

[0016] The lower end of the transverse buckle is buckled to the buckle, the lower end of the longitudinal connecting part is connected to the middle area of ​​the upper end of the transverse buckle, and the connecting line is connected to the upper end of the longitudinal connecting part;

[0017] Alternatively, the buckle portion has a notch, both ends of the transverse buckle portion are buckled to the buckle portion, the upper end of the longitudinal connecting portion is connected to the middle area of ​​the transverse buckle portion, and the lower end of the longitudinal connecting portion passes through the notch and is connected to the connecting line.

[0018] In this solution, the above-mentioned structural form is adopted. The elastic clip is connected to the buckle part through the horizontal buckle part, which increases the force-bearing area of ​​the filter element and the filter element replacement unlocking device, thereby reducing the risk of water leakage, improving the reliability of the water purifier, and extending the life of the water purifier.

[0019] Preferably, there are two elastic clips and two latching parts. One end of the two elastic clips is hinged to each other by a spring clip, and the other end of the two elastic clips is latched to the two latching parts respectively.

[0020] In this solution, the aforementioned structural form is adopted, with each latching component being latched to two latching parts by two elastic clips respectively, achieving a stable and reliable locking connection. Simultaneously, the spring clips apply force to the two elastic clips to restore them to their initial state, further ensuring a stable and reliable locking connection.

[0021] Preferably, the filter element replacement unlocking device further includes a leak-proof spring, which is pressed between the bottom of the filter element and the outer shell so that the leak-proof spring applies an outward popping force to the filter element.

[0022] In this solution, the above-mentioned structure is adopted. In addition to preventing water leakage, the anti-leakage spring can also apply force to the filter element, thereby providing elasticity for the filter element to pop out when it is disassembled. When the elastic clip and the filter element are no longer in contact, the filter element pops out under the action of the anti-leakage spring, thus unlocking.

[0023] Preferably, there are two of each of the spiral button, the connecting wire, and the snap-fit ​​component, with the two snap-fit ​​components snapped onto both sides of the filter element.

[0024] In this design, the aforementioned structure is used, with two filter cartridge replacement and unlocking devices respectively located on both sides of the outer casing and snap-fitted to the middle of the filter cartridge's sides. When locking, it is not necessary to rotate the filter cartridge to drive the rotating disc on the water circuit board; it can be directly inserted. Simultaneously, this ensures a stable connection of the filter cartridge within the outer casing, thereby reducing the risk of water leakage, improving the reliability of the water purifier, and extending its lifespan.

[0025] A water purifier includes a housing, a filter element, and a filter element replacement and unlocking device as described above.

[0026] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0027] The positive and progressive effects of this utility model are as follows:

[0028] This utility model discloses a filter cartridge replacement and unlocking device and a water purifier containing the device. The rotating motion of the spiral button inside the outer shell moves the connecting wire and the snap-fit ​​component, thereby unlocking the filter cartridge from the outer shell. This allows users to replace the filter cartridge quickly, easily, and effortlessly. The simple unlocking method allows each user to replace the filter cartridge independently. The increased force points and force areas during unlocking and the absence of stress on the water circuit board greatly reduce the risk of leakage, extend the service life of the water purifier, improve the user experience, and avoid safety threats to personnel and property caused by leakage. Attached Figure Description

[0029] Figure 1 This is a partial structural schematic diagram of the water purifier according to an embodiment of the present utility model.

[0030] Figure 2 This is a schematic diagram of the internal structure of the water purifier in use according to an embodiment of the present invention.

[0031] Figure 3 This is a schematic diagram of the internal structure of the water purifier in an embodiment of the present invention when the filter element is replaced.

[0032] Figure 4 This is a schematic diagram of the filter element replacement and unlocking device and the filter element according to an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] Spiral button 1

[0035] Spiral guide 11

[0036] Connector 2

[0037] Buckle component 3

[0038] Elastic clip 31

[0039] Horizontal buckle part 311

[0040] Longitudinal connecting part 312

[0041] Compression spring 32

[0042] Leak-proof spring 4

[0043] Filter 10

[0044] Buckle part 101

[0045] Gap 102

[0046] Casing 20

[0047] 201 piercing

[0048] Limiting column 202 Detailed Implementation

[0049] The present invention will be described more clearly and completely below by way of embodiments and in conjunction with the accompanying drawings, but this does not limit the present invention to the scope of the embodiments.

[0050] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figure, this utility model discloses a water purifier, which includes a filter element 10, a housing 20, and a filter element replacement and unlocking device. The filter element replacement and unlocking device is used to lock or unlock the filter element 10 inside the housing 20. When the filter element replacement and unlocking device locks the filter element 10 inside the housing 20, the water purifier can be used normally; when the filter element replacement and unlocking device unlocks the filter element 10 inside the housing 20, the filter element 10 can be removed from the housing 20 and replaced.

[0051] The filter cartridge replacement and unlocking device includes a spiral button 1, a connecting wire 2, and a latching component 3. The latching component 3 is located between the filter cartridge 10 and the outer shell 20, and is latched to the outer surface of the filter cartridge 10 to lock the filter cartridge 10 inside the outer shell 20. One end of the connecting wire 2 is wrapped around the spiral button 1, and the other end of the connecting wire 2 is connected to the latching component 3. The spiral button 1 passes through the outer shell 20 and can rotate inside the outer shell 20, so that the winding of the connecting wire 2 drives the latching component 3 to move away from the filter cartridge 10, so that the latching component 3 is disengaged from the filter cartridge 10, and the filter cartridge 10 is unlocked from the outer shell 20.

[0052] One end of the spiral button 1 protrudes from the outer surface of the housing 20, while the other end passes through the housing 20 and connects to the connecting wire 2. When the water purifier is in use, the latching component 3 latches onto the outer surface of the filter element 10, locking the filter element 10 inside the housing 20 and preventing it from detaching. When the filter element 10 needs to be replaced, the user applies force to the spiral button 1, causing it to rotate inside the housing 20 and winding the connecting wire 2. This shortens the length of the connecting wire 2, which in turn moves the latching component 3 away from the filter element 10, disengaging it from the filter element 10. The filter element 10 can then be removed from the housing 20 for replacement. Users only need to apply force to the spiral button 1 to unlock the filter cartridge 10, making it simple, quick, and time-saving to replace the filter cartridge 10. The simple unlocking method allows each user to replace the cartridge independently. The increased force point and force area during unlocking, and the absence of force on the water circuit board, greatly reduces the risk of water leakage, extends the service life of the water purifier, improves the user experience, and avoids the safety threats to people and property caused by water leakage.

[0053] Specifically, the filter element 10 has an inlet and outlet at its bottom, and the water circuit board is located at the bottom of the housing 20 and also has an inlet and outlet. When installing and removing the filter element 10, the inlet and outlet of the filter element 10 are matched with the inlet and outlet of the water circuit board. The protruding inlet and outlet parts on the water circuit board do not need to be subjected to lateral rotational force, thereby reducing the possibility of breakage of the inlet and outlet on the water circuit board, extending the life of the water circuit board to a certain extent, and greatly reducing the risk of leakage.

[0054] In this embodiment, the outer casing 20 has a through hole 201, through which the spiral button 1 passes. The outer peripheral surface of the spiral button 1 has a spiral guide portion 11, and the inner wall surface of the through hole 201 has a spiral matching portion. The spiral guide portion 11 is connected to the spiral matching portion and can move on the spiral matching portion, so that the spiral button 1 can move and rotate axially near the filter element 10 within the through hole 201. When unlocking, the user presses on the spiral button 1, so that the spiral button 1 can move axially near the filter element 10 within the through hole 201. Through the movement of the spiral guide portion 11 on the spiral matching portion, the spiral button 1 moves axially within the through hole 201 and rotates simultaneously, thereby achieving the winding of the connecting wire 2 and driving the buckle component 3 to move away from the filter element 10, thus unlocking the filter element 10 from the outer casing 20. Rotation is relatively laborious, making filter replacement time-saving and labor-saving.

[0055] Specifically, the spiral guide portion 11 is spiral in shape and protrudes outward, while the spiral matching portion is spiral in shape and recessed inward, so that the spiral guide portion 11 is inserted into the spiral matching portion to enable the spiral button 1 to move and rotate along its axis.

[0056] The spiral button 1 is made of metal. The spiral guide 11 is a guide rail, with a raised guide rail around the spiral button 1 at an angle less than 45 degrees to the axis of the spiral button 1 body. The spiral mating part is a guide groove, and the outer shell 20 has a metal-painted guide groove at the point where it mates with the spiral button 1. When the spiral button 1 is pressed, it rotates, winding the connecting wire 2 around itself, which in turn moves the latching component 3 away from the filter element 10, thus unlocking the filter element 10.

[0057] When the user needs to replace the filter element 10, he presses the spiral button 1. Since the guide rail of the spiral button 1 is less than 45 degrees from the main body axis, the friction caused by the positive pressure on the guide groove is reduced. Moreover, since both the button and the contact surface are made of metal, according to the principle of composition and decomposition of Newton's forces, the pressure applied can be decomposed into a downward force and a force that causes the spiral button 1 to rotate. Due to the angle and metal material, when the guide rail is subjected to pressure, the spiral button 1 can rotate relatively easily under the guidance of the guide rail and guide groove.

[0058] In this embodiment, there are two spiral buttons 1, two connecting wires 2, and two snap-fit ​​components 3, which are respectively snap-fitted to both sides of the filter element 10. Specifically, two filter element replacement unlocking devices are respectively located on both sides of the outer casing 20 and snap-fitted to the middle of both sides of the filter element 10. When locking, it is not necessary to rotate the filter element 10 to drive the rotating disk on the water circuit board to achieve a tight lock; it is only necessary to insert it directly. At the same time, the two snap-fit ​​components 3 are snap-fitted to the middle of both sides of the filter element 10, so that the filter element 10 is stably connected to the outer casing 20, thereby reducing the risk of water leakage in the water purifier, improving the reliability of the water purifier, and extending the life of the water purifier.

[0059] The snap-fit ​​component 3 includes an elastic clip 31. The outer surface of the filter element 10 has an outwardly protruding snap-fit ​​portion 101. The inner wall of the elastic clip 31 is attached to the outer surface of the filter element 10, and the elastic clip 31 is snap-fitted to the snap-fit ​​portion 101. The connecting wire 2 is connected to the outer surface of the elastic clip 31. The snap-fit ​​portion 101 protrudes outward along a direction perpendicular to the insertion direction of the filter element 10. The elastic clip 31 is snap-fitted to the snap-fit ​​portion 101 and applies force to the filter element 10, thereby preventing the filter element 10 from detaching from the outer casing 20. The elastic clip 31 and the filter element 10 are fitted together, making the snap-fit ​​connection between them stable and reliable, and the overall structure is simple.

[0060] In this embodiment, there are two elastic clips 31 and two snap-fit ​​parts 101. One end of the two elastic clips 31 is hinged to each other by a spring clip, and the other end of the two elastic clips 31 is snap-fitted to the two snap-fit ​​parts 101 respectively. Each snap-fit ​​part 3 is snap-fitted to the two snap-fit ​​parts 101 by the two elastic clips 31 respectively, further realizing a stable and reliable locking connection. The snap-fit ​​parts 101 are annular and surround the outer surface of the filter element 10, and the two snap-fit ​​parts 101 are distributed vertically at intervals on the outer surface of the filter element 10. The two elastic clips 31 are hinged to each other by a spring clip, and the spring clip will exert force on the two elastic clips 31 to make the two elastic clips 31 return to their initial state. The spring clip is spring-shaped and has a portion of spring wire extending from both ends. Its function is to connect the upper and lower elastic clips 31, provide inward clamping force for locking the filter element 10, and also prevent the elastic clips 31 from folding inward, i.e., to one side of the filter element 10, when subjected to force.

[0061] The latching component 3 also includes a compression spring 32. The two ends of the compression spring 32 abut against the elastic clip 31 and the inner wall of the outer casing 20, respectively, so that the compression spring 32 applies a force to the elastic clip 31 along the path close to the filter element 10. The force of the compression spring 32 on the elastic clip 31 causes the elastic clip 31 to fit against and latch onto the filter element 10, achieving high connection stability. Simultaneously, the compression spring 32 has a reset function. After unlocking and replacing the filter element 10, when the user does not apply force to the spiral button 1, the compression spring 32 applies force to the elastic clip 31, causing the inner wall of the elastic clip 31 to fit against the replaced filter element 10, thereby locking the filter element 10 inside the outer casing 20; and the connecting wire 2 and the spiral button 1 will return to their initial state.

[0062] The inner wall of the outer casing 20 has a limiting post 202 that extends into the compression spring 32. The limiting post 202 has a limiting function, and by extending into the compression spring 32, it limits the compression spring 32, preventing it from moving and improving stability. Specifically, the limiting post 202 has a frustum structure, and the inner wall of the outer casing 20 has four frustum structures at the compression springs 32. There are four compression springs 32 in total, and they are respectively located at the four frustum structures. When unlocking, the elastic clip 31 presses outward, and the compression springs 32 are compressed, providing elastic force for the elastic clip 31 to return to the clamped state.

[0063] The elastic clip 31 includes a transverse snap-fit ​​portion 311 and a longitudinal connecting portion 312, both of which are attached to the outer surface of the filter element 10. The lower end of the transverse snap-fit ​​portion 311 is snapped to the snap-fit ​​portion 101, and the lower end of the longitudinal connecting portion 312 is connected to the middle area of ​​the upper end of the transverse snap-fit ​​portion 311. The connecting line 2 is connected to the upper end of the longitudinal connecting portion 312. Alternatively, the snap-fit ​​portion 101 has a notch 102, both ends of the transverse snap-fit ​​portion 311 are snapped to the snap-fit ​​portion 101, the upper end of the longitudinal connecting portion 312 is connected to the middle area of ​​the transverse snap-fit ​​portion 311, and the lower end of the longitudinal connecting portion 312 passes through the notch 102 and is connected to the connecting line 2.

[0064] Specifically, the longitudinal connecting part 312 has a first connecting part, a second connecting part and a hinge part connected in sequence along its length direction. The two elastic clips 31 are hinged to each other through the hinge part. The longitudinal connecting part 312 is connected to the transverse buckle part 311 through the first connecting part, and the connecting line 2 is connected to the second connecting part.

[0065] When the spiral button 1 rotates, it winds up the connecting wire 2, shortening it and pulling the longitudinal connecting part 312 and the transverse latching part 311 away from the filter element 10. Once the transverse latching part 311 of the elastic clip 31 and the latching part 101 of the filter element 10 are no longer in contact, the filter element 10 can be removed from the housing 20, thus unlocking it. When installing the filter element 10, press and hold the spiral buttons 1 on both sides, insert the filter element 10, and release the spiral button 1 after it is fully inserted. The elastic clip 31 returns to its initial state under the combined action of the spring clip and the compression spring 32, causing the elastic clip 31 to fit against the outer surface of the filter element 10 and latch onto it, thus replacing the filter element 10. This method of replacing the entire filter element 10 is relatively effortless. Furthermore, the housing 20 can be marked with a label, such as the word "press," to make it easier for users to understand, allowing each user to know how to replace the filter element, saving time and effort for self-replacement.

[0066] The elastic clips 31 are divided into upper and lower parts. The spring clips hinge the two elastic clips 31 together, primarily functioning to lock the filter element 10 and prevent it from popping out. When the two elastic clips 31 are pulled by the connecting wire 2, they fold outwards. When engaged, this prevents the elastic clips 31 from folding inwards towards the filter element 10. The connecting wire 2 has three connections: the upper elastic clip 31, the lower elastic clip 31, and the bottom of the spiral button 1. When the spiral button 1 winds the connecting wire 2, the protruding portion of the connecting wire 2 shortens, thereby pulling the upper and lower elastic clips 31 to fold outwards.

[0067] The two elastic clips 31 have a T-shaped flat ring structure, resulting in four force points on both sides of the filter element 10. This increases the number of force points compared to traditional filter element replacement methods. Furthermore, the T-shape significantly increases the force-bearing area between the latching part 101 on the filter element 10 and the filter element replacement unlocking device compared to the traditional screw-on method, reducing the risk of water purifier leakage. With the increased force points between the filter element replacement unlocking device and the filter element 10, if one of the elastic clips 31 or the latching part 101 breaks or fails, the remaining parts can still perform the locking and unlocking functions, thereby reducing the risk of leakage, improving the reliability of the water purifier, and extending its lifespan.

[0068] This patent increases the force-bearing area of ​​the filter element 10 and the filter element replacement unlocking device by setting a T-shaped elastic clip 31 and a buckle part 101 on the filter element 10. The elastic clips 31 on both sides have two force-bearing points, one above and one below, for a total of four points to bear the pressure of water pressure on the filter element 10, thus reducing the pressure at each force-bearing point. Furthermore, if the device at one force-bearing point breaks, the filter element replacement unlocking device at other force-bearing points can still replace the filter element 10, preventing the entire filter element replacement unlocking device from failing. This makes the water purifier more reliable and ensures that it does not leak.

[0069] The filter cartridge replacement unlocking device also includes a leak-proof spring 4, which is pressed between the bottom of the filter cartridge 10 and the outer casing 20, so that the leak-proof spring 4 applies an outward popping force to the filter cartridge 10. In addition to preventing water leakage, the leak-proof spring 4 can also apply force to the filter cartridge 10, thereby providing elasticity for the filter cartridge 10 to pop out when it is disassembled. When the elastic clip 31 and the filter cartridge 10 are no longer in contact, the filter cartridge 10 pops out under the action of the leak-proof spring 4, thus unlocking the filter cartridge.

[0070] In this embodiment of the water purifier, when installing the filter element 10, pressing the spiral buttons 1 on both sides causes the connecting line 2 to pull the two elastic clips 31 outwards in a folding motion, allowing the filter element 10 to be inserted. The filter element 10 is positioned by the inlet and outlet of the water circuit board, and the anti-leakage spring 4 is compressed, providing power for the filter element 10 to pop out. After the filter element 10 is inserted to the bottom, releasing the spiral buttons 1 causes the connecting line 2 to return to its initial slack state. The connecting line 2 drives the spiral buttons 1 to rotate outwards, returning the spiral buttons 1 to their initial position. The elastic clips 31 lose the pulling force of the connecting line 2 and return to their initial state, i.e., they are tightly attached to the filter element 10. When removing the filter element 10, pressing the spiral buttons 1 causes the bottom of the spiral buttons 1 to rotate and wrap around the connecting line 2, pulling the other end of the connecting line 2 outwards. The connecting line 2 pulls the two elastic clips 31 outwards in a folding motion and away from the filter element 10. The latching part 101 on the filter element 10 loses the latching force of the elastic clips 31, and the filter element 10 pops outwards under the action of the bottom anti-leakage spring 4, completing the removal of the filter element 10.

[0071] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A filter cartridge change-out unlocking device for locking or unlocking a filter cartridge in a housing, characterized by, The filter core replacement unlocking device comprises a spiral button, a connecting line and a buckle component, the buckle component is located between the filter core and the shell, the buckle component is buckled to the outer surface of the filter core to lock the filter core in the shell, one end of the connecting line is wound around the spiral button, the other end of the connecting line is connected to the buckle component, the spiral button is arranged in the shell and can rotate in the shell, the winding of the connecting line drives the buckle component to move away from the filter core to make the buckle component and the outer surface of the filter core disengage, and the filter core is unlocked from the shell.

2. The filter cartridge change-out unlock device of claim 1, wherein, The shell is provided with a through hole, the spiral button is arranged in the through hole, the outer periphery of the spiral button is provided with a spiral guide part, the inner wall of the through hole is provided with a spiral matching part, the spiral guide part is connected to the spiral matching part and can move on the spiral matching part, so that the spiral button can move axially and rotate in the through hole.

3. The filter cartridge change-out unlock device of claim 1, wherein, The buckle component comprises an elastic clamp, the outer surface of the filter core is provided with an outwardly protruding buckle part, the inner wall of the elastic clamp is attached to the outer surface of the filter core, and the elastic clamp is buckled to the buckle part, the connecting line is connected to the outer surface of the elastic clamp.

4. The filter cartridge change-out unlock device of claim 3, wherein, The buckle component further comprises a compression spring, the two ends of the compression spring are respectively abutted against the inner wall of the shell and the elastic clamp, so that the compression spring applies a force to the elastic clamp in the direction of approaching the filter core.

5. The filter cartridge change-out unlock device of claim 4 wherein, The inner wall of the shell is provided with a limiting column, the limiting column extends into the compression spring.

6. The filter cartridge change-out unlock device of claim 3, wherein, The elastic clamp comprises a transverse buckle part and a longitudinal connecting part, both the transverse buckle part and the longitudinal connecting part are attached to the outer surface of the filter core. The lower end of the transverse buckle part is buckled to the buckle part, the lower end of the longitudinal connecting part is connected to the middle region of the upper end of the transverse buckle part, and the connecting line is connected to the upper end of the longitudinal connecting part. Alternatively, the buckle part is provided with a notch, both ends of the transverse buckle part are buckled to the buckle part, the upper end of the longitudinal connecting part is connected to the middle region of the transverse buckle part, and the lower end of the longitudinal connecting part passes through the notch and is connected to the connecting line.

7. The filter cartridge change-out unlock device of claim 3, wherein, The number of the elastic clamps and the buckle parts is two, one end of the two elastic clamps is hinged to each other by a spring clamp, and the other end of the two elastic clamps is respectively buckled to the two buckle parts.

8. The filter cartridge change-out unlock device of claim 1, wherein, The filter core replacement unlocking device further comprises a water leakage prevention spring, the water leakage prevention spring is arranged between the bottom of the filter core and the shell to apply an outwardly protruding force to the filter core.

9. The filter cartridge change-out unlock device of claim 1, wherein, The number of the spiral buttons, the connecting lines and the buckle components is two, and the two buckle components are respectively buckled to the two sides of the filter core.

10. A water purifier characterized by comprising: It comprises a shell, a filter core and a filter core replacement unlocking device as claimed in any one of claims 1-9.

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