Filter unit with a push-button operated, quickly removable and mountable filter cartridge assembly

Abstract

Filter device with a push-operated, quickly removable and mountable filter cartridge assembly, comprising: a housing (1); a filter cartridge assembly (2); and an elastic snap-fit ​​connection unit (3), wherein a water inlet (11) and a water outlet (12) are provided on the housing (1), wherein a receiving chamber (10) is formed inside the housing (1), wherein the filter cartridge assembly (2) is arranged in the receiving space (10) and is detachably connected to the receiving space (10) via the elastic snap-fit ​​connection unit (3), characterized by - that one end of the filter cartridge assembly (2) is provided with a pressure section (22), the pressure section (22) extending outwards from the receiving chamber (10); - that a first elastic element (4) is arranged between an end of the filter cartridge assembly (2) facing away from the pressure section (22) and the housing (1), - that a locking groove (25) is formed on a side wall of the filter cartridge assembly (2); - that the elastic locking connection unit (3) is designed to engage in the locking groove (25); and - that a movable element (5) is movably arranged in the locking groove (25), wherein under the action of a pressing force (F1) exerted from the outside on the pressing section (22) and / or under the restoring force of the first elastic element (4) the filter cartridge assembly (2) is movable relative to the receiving space (10), and wherein during the movement of the filter cartridge assembly (2) the elastic locking connection unit (3) performs an elastic extension and retraction movement under the action of the movable element (5) and the movable element (5) is movable within the locking groove (25) under the action of the elastic locking connection unit (3).

Description

[0001] The invention relates to the technical field of filter devices, in particular a filter device with a push-button operated filter cartridge assembly that can be quickly disassembled and assembled. The filter device is designed for use in shower devices, faucets, water purifiers, or similar products.

[0002] With industrial development and increasing urbanization, the pollution of natural water resources is steadily rising. Tap water used in everyday life often contains impurities such as suspended solids, heavy metal ions, organic substances, residual chlorine, and other harmful components. To reduce the harmful effects of these substances on the human body, most faucets and showerheads are equipped with filters, typically a filter cartridge, to purify the water flowing through them. However, after a certain period of use, the filter cartridge itself becomes contaminated by the trapped pollutants. To prevent secondary water contamination, it is necessary to regularly clean or replace the filter cartridge in faucets and showerheads.For example, Chinese utility model CN201832727U discloses a filter shower head in which a water treatment device (i.e., a filter cartridge component) is arranged in the water inlet of the shower head handle by means of a plug nut and a plug with a continuous water channel. By loosening the plug from the plug nut, the water treatment device can be removed from the shower head handle and cleaned or replaced. Furthermore, Chinese utility model CN220572866U discloses a quickly mountable faucet water purifier in which a secure connection between a filter tube and a valve tube is achieved by inserting elastic locking pins of a frame into insertion openings of an insert block. The filter cartridge component is arranged on a support ring on the inner wall of the filter tube, which is intended to facilitate the replacement of the filter cartridge component.

[0003] However, with the aforementioned filter showers or faucet water purifiers, assembling or disassembling the filter cartridge component requires first assembling or disassembling other parts. This makes the work steps comparatively complex, operation less convenient, and increases the time and effort required.

[0004] Therefore, there is a need for a technical solution that can overcome the aforementioned disadvantages.

[0005] The invention is based on the objective of creating a filter device with a push-operated, quickly disassembled and assembled filter cartridge assembly, which solves the technical problem that, in known solutions, the installation and removal of filter cartridges is comparatively complex and cumbersome.

[0006] This problem is solved according to the invention by a filter device with a push-button operated filter cartridge assembly that can be quickly disassembled and assembled and has the features specified in claim 1. Further advantageous embodiments of the invention are described in the features of the dependent claims.

[0007] According to the invention, a filter device is provided with a push-operated, quickly disassembled and assembled filter cartridge assembly comprising a housing, a filter cartridge assembly, and an elastic snap-fit ​​connection unit. A water inlet and a water outlet are provided on the housing, and a receiving chamber is formed inside the housing. The filter cartridge assembly is arranged in the receiving chamber and detachably connected to it via the elastic snap-fit ​​connection unit. One end of the filter cartridge assembly is provided with a push-fit section that extends outwards from the receiving chamber. A first elastic element is arranged between an end of the filter cartridge assembly facing away from the push-fit section and the housing.A locking groove is provided on one side wall of the filter cartridge assembly, into which the elastic locking connection unit can engage. A movable element is movably arranged within the locking groove. Under the influence of an externally applied pressure force and / or the restoring force of the first elastic element, the filter cartridge assembly is movable relative to the receiving space. During this movement, the elastic locking connection unit, under the influence of the movable element, performs an elastic extension and retraction movement, while the movable element moves within the locking groove under the influence of the elastic locking connection unit.

[0008] Furthermore, at least two mounting grooves are provided in the receiving space on an outer circumferential side of the locking groove, with an elastic locking connection unit arranged in each mounting groove, so that a reliable fixation of the filter cartridge assembly is ensured.

[0009] The elastic locking connection unit preferably comprises a second elastic element and a locking block that can engage in the locking groove. A first chamfer is provided at one end of the locking block facing the filter cartridge assembly, while a second chamfer is formed at one end of the movable element facing away from the filter cartridge assembly.

[0010] Along a direction from the pressure section to the first elastic element, the distance between the first slope and a central axis of the filter cartridge assembly gradually decreases, while the distance between the second slope and the central axis gradually increases.

[0011] The filter cartridge assembly further comprises a filter cartridge cylinder, inside which a filter material receiving chamber is provided. One end of the filter cartridge cylinder is in contact with the water inlet, while the opposite end is in contact with the water outlet.

[0012] A first opening is formed at one end of the filter cartridge cylinder, while several through-openings are provided at the opposite end. A filter cover is detachably arranged in the first opening, and the filter cover has several further through-openings.

[0013] Furthermore, the filter cartridge assembly has a mounting base with an internal mounting chamber. One end of the filter cartridge cylinder is detachably arranged in the mounting chamber and connected to it via a flow path. A flow channel is provided on or between the mounting base and the filter cartridge cylinder, connecting the mounting chamber to the water outlet. The pressure section is located at the end of the mounting base opposite the first elastic element.

[0014] Ideally, the filter cartridge assembly also features a fragrance component that is detachably arranged in the assembly space, so that an additional aromatization function can be provided during the operation of the filter device.

[0015] In a further embodiment, the filter cartridge assembly also includes a movable cylinder arranged in the receiving chamber. One end of the movable cylinder is in flow communication with the water inlet, while a second opening is formed at the opposite end, through which the filter cartridge cylinder is detachably arranged in the movable cylinder. The first elastic element is arranged between the movable cylinder and the housing. Under the influence of an external pressure force and / or the restoring force of the first elastic element, the movable cylinder is movable relative to the receiving chamber.

[0016] In summary, the following advantages, for example, can be achieved with the filter device according to the invention: (1) Through the interaction of the elastic snap-fit ​​connection unit, the movable element, and the snap groove, as well as the interaction of the external pressure force with the restoring force of the first elastic element, the filter cartridge assembly can be both installed and removed simply by pressing the push section towards the first elastic element. No additional components need to be installed or removed, making the operation particularly simple, quick, and convenient. Furthermore, it is not necessary to detach the filter unit from the product during installation or removal of the filter cartridge assembly, allowing the filter unit to be used in a variety of applications, including showers, taps, and water purifiers. (2) The arrangement of the movable cylinder allows the filtering device to be operated normally regardless of whether a filter cartridge cylinder is installed or not, thus flexibly meeting different usage requirements of users.

[0017] The invention and its embodiments are explained in more detail below with reference to the drawing. The drawing shows: Fig. 1 A schematic overall view of the filter device according to embodiment 1 and embodiment 2, applied in a shower; Fig. 2 a partially exploded view of the filter device according to embodiment 1 and embodiment 2, applied in a shower; Fig. 3 a sectional view of the filter device according to embodiment 1, applied in a shower; Fig. 4 an enlarged detailed view of the in Fig. 3 areas marked with A; Fig. 5 an exploded view of the filter device according to embodiment 1, applied in a shower; Fig. 6(a) to Fig. 6(c) Schematic representations of the disassembly process of the filter cartridge assembly according to embodiment 1; Fig. 7 a sectional view of the filter device according to embodiment 2, applied in a shower; Fig. 8 a sectional view of the filter device according to embodiment 2 in a state without an inserted filter cartridge cylinder; Fig. 9 an exploded view of the filter device according to embodiment 2, applied in a shower; and Fig. 10(a) to Fig. 10(c) Schematic representations of the relative motion of a movable cylinder within the receiving space according to embodiment 2, wherein the filter cartridge cylinder is not shown.

[0018] For better understanding by those skilled in the art, the present invention is further explained below with reference to exemplary embodiments and the accompanying drawings. The content described in the exemplary embodiments does not constitute a limitation of the scope of protection of the present invention. Example 1

[0019] Using the example of an application of the push-button, quickly removable and mountable filter cartridge component in a shower head, the following section refers to the Fig. 1 to Fig. 6. The structure of a push-operated, quickly disassembled and assembled filter cartridge component of a filter device according to this embodiment is explained in detail.

[0020] As in the Fig. 1 to Fig. As shown in Figure 6, this embodiment relates to a filter device with a push-button, quickly removable and mountable filter cartridge assembly, wherein the filter device comprises a housing 1, a filter cartridge assembly 2, and an elastic snap-fit ​​connection unit 3. A water inlet 11 and a water outlet 12 are provided on the housing 1, and a receiving chamber 10 is formed within the housing 1. The filter cartridge assembly 2 is arranged in the receiving chamber 10 and detachably connected to the receiving chamber 10 via the elastic snap-fit ​​connection unit 3. One end of the filter cartridge assembly 2 is provided with a push-button section 22, which extends outwards from the receiving chamber 10. A first elastic element 4 is arranged between an end of the filter cartridge assembly 2 facing away from the push-button section 22 and the housing 1.A locking groove 25 is provided on a side wall of the filter cartridge assembly 2, and the elastic locking connection unit 3 can engage in this groove. A movable element 5 is also movably arranged within the locking groove 25. Under the influence of a pressing force F1 exerted externally on the pressure section 22 and / or the restoring force of the first elastic element 4, the filter cartridge assembly 2 is movable relative to the receiving space 10. During this relative movement, the elastic locking connection unit 3 and the movable element 5 are operatively connected, with the elastic locking connection unit 3 performing an elastic extension and retraction movement under the guidance of the movable element 5. Simultaneously, the movable element 5 is movable within the locking groove 25 under the influence of the elastic locking connection unit 3. The first elastic element 4 is designed as a spring.When the filter device is used in a shower head, a connector 13 is arranged in the water inlet 11, while a nozzle plate 14 is provided in the water outlet 12. A first through-opening 141 is formed in a central area of ​​the nozzle plate 14, through which the filter cartridge assembly 2 can be inserted into the shower head. The pressure section 22 extends outwards through the first through-opening 141 from the receiving chamber 10, allowing a user to exert a pressure force on the pressure section 22. Several water outlet openings 143 are formed on the nozzle plate 14 around the outer circumference of the first through-opening 141. The connector 13 is designed as a ball joint connection to allow for angular adjustment of the shower head.

[0021] In practical operation, the pressure section 22 is manually operated to remove the filter cartridge assembly 2 from the filter unit. As in Fig. As shown in Figure 6a, a pressing force F1 is applied to the pressing section 22 such that the filter cartridge assembly 2 moves towards the first elastic element 4 under the influence of the pressing force F1. The movable element 5 moves together with the filter cartridge assembly 2, and during this movement, the first elastic element 4 is compressed. Simultaneously, the movable element 5 comes into contact with the elastic locking connection unit 3 and exerts a force on it, causing the elastic locking connection unit 3 to be elastically compressed. When the filter cartridge assembly 2 is pressed to an end position, the movable element 5 passes over the elastic locking connection unit 3, so that the movable element 5 is positioned closer to the first elastic element 4 than the elastic locking connection unit 3. In this state, the elastic locking connection unit 3 can relax again.The pressing force F1 is then released, so that the first elastic element 4 returns to its initial position and the filter cartridge assembly 2 moves in a direction opposite to the first elastic element 4, as shown in . Fig. Figure 6b illustrates this. The movable element 5 is prevented from moving in conjunction with the filter cartridge assembly 2 by the elastic locking connection unit 3, causing the movable element 5 to gradually shift within the locking groove 25 towards a side of the locking groove 25 facing the first elastic element 4. Once the movable element 5 is in contact with the side of the locking groove 25 facing the first elastic element 4, the restoring force of the first elastic element 4 moves the filter cartridge assembly 2 away from the first elastic element 4, with the locking groove 25 carrying the movable element 5 along with it, so that the movable element 5 moves together with the locking groove 25 relative to the housing.Here, the movable element 5 again exerts a force on the elastic locking connection unit 3, causing it to be elastically compressed again and the movable element 5 to pass over the elastic locking connection unit 3. In this state, the movable element 5 is positioned closer to the pressure section 22 than the elastic locking connection unit 3, so that the elastic locking connection unit 3 no longer exerts a blocking effect on the filter cartridge assembly 2. As in . Fig. As shown in Figure 6c, at least part of the filter cartridge assembly 2 is pushed out of the receiving chamber 10 by the restoring force of the first elastic element 4, so that the filter cartridge assembly 2 can be easily removed from the filter device by the user. To install the filter cartridge assembly 2 into the filter device, the filter cartridge assembly 2 is inserted into the receiving chamber 10. A side wall of the filter cartridge assembly 2 exerts a compressive force on the elastic locking connection unit 3, causing the elastic locking connection unit 3 to be elastically compressed. Simultaneously, the filter cartridge assembly 2 is moved against the restoring force of the first elastic element 4 in the direction of the first elastic element 4, thereby elastically deforming the first elastic element 4.In this state, the movable element 5 is located, due to gravity, on one side of the locking groove 25 facing the pressure section 22, so that a clearance is formed on the other side of the locking groove 25 facing the first elastic element 4. As the filter cartridge assembly 2 moves further towards the first elastic element 4, so that the clearance of the locking groove 25 aligns with the elastic locking connection unit 3, there is no longer any obstructing structure between the elastic locking connection unit 3 and the clearance. Consequently, the elastic locking connection unit 3 can relax again under its own elasticity and engage in the clearance of the locking groove 25. This reliably locks and secures the filter cartridge assembly 2 in the receiving chamber 10 of the filter device by the elastic locking connection unit 3, thus completing the installation of the filter cartridge assembly 2.

[0022] In this embodiment, the coordinated interaction of the elastic locking connection unit 3, the movable element 5, and the locking groove 25, as well as the interaction of the externally applied pressing force F1 with the restoring force of the first elastic element 4, ensures that both the installation and removal of the filter cartridge assembly 2 can be carried out in a particularly simple manner. Regardless of whether the filter cartridge assembly 2 is to be installed or removed, only the pressing section 22 of the filter cartridge assembly 2 needs to be pressed towards the first elastic element 4, without the need to assemble or disassemble any further components. This reduces the number of operating steps and allows for quick and convenient installation and removal.Furthermore, it is not necessary to remove the entire filter assembly from the respective product during the installation or removal of the filter cartridge assembly 2. The filter assembly according to this embodiment is therefore particularly suitable for use in various sanitary products, such as showers, faucets, or water purifiers.

[0023] Furthermore, at least two mounting grooves 145 are provided in the receiving chamber 10 on an outer circumferential side of the locking groove 25, with each mounting groove 145 accommodating an elastic locking connection unit 3. Specifically, in an application of the filter device according to the invention in a shower head, a cover plate 15 is attached to an inner side 144 of the outlet plate 14, wherein a second through-opening 151 is formed in a central area of ​​the cover plate 15, through which the filter cartridge assembly 2 can be passed. The at least two mounting grooves 145 are arranged between the cover plate 15 and the outlet plate 14. The design of the mounting grooves 145 enables simple and precise positioning of the elastic locking connection units 3.The design of the mounting grooves 145 facilitates the assembly of the elastic snap-fit ​​connection units 3, and the arrangement of at least two mounting grooves 145 and the elastic snap-fit ​​connection units 3 arranged therein reliably ensures the fixing effect of the elastic snap-fit ​​connection units 3 on the filter cartridge assembly 2.

[0024] Furthermore, the elastic locking connection unit 3 comprises a second elastic element 31 and a locking block 32 connected to the second elastic element 31, wherein the locking block 32 is arranged in the direction of the filter cartridge assembly 2 and can engage in the locking groove 25. A first chamfer 322 is formed at an end of the locking block 32 facing the filter cartridge assembly 2, while a second chamfer 52 is provided at an end of the movable element 5 facing away from the filter cartridge assembly 2.

[0025] Preferably, the first inclined plane 322 is configured such that, along a direction from the pressure section 22 to the first elastic element 4, the distance d1 between points on the first inclined plane 322 and a central axis X of the filter cartridge assembly 2 gradually decreases. Similarly, the second inclined plane 52 is configured such that, along the same direction, the distance d2 between points on the second inclined plane 52 and the central axis X of the filter cartridge assembly 2 gradually increases. Specifically, the second elastic element 31 is also designed as a spring. The configuration of the first inclined plane 322 enables the filter cartridge assembly 2 or the movable element 5 to exert a force on the first inclined plane 322, thereby elastically compressing the elastic snap-fit ​​connection unit 3.The formation of the second inclined plane 52 ensures that, when removing the filter cartridge assembly 2, the movable element 5 can reliably pass over the elastic locking connection unit 3, so that at least part of the filter cartridge assembly 2 is moved out of the receiving space 10 with low friction under the restoring force of the first elastic element 4.

[0026] Furthermore, the filter cartridge assembly 2 comprises a filter cartridge cylinder 27, inside of which a filter material receiving chamber 273 is formed. One end of the filter cartridge cylinder 27 is in flow communication with the water inlet 11, while an opposite end is in flow communication with the water outlet 12. Preferably, a first opening 272 is formed at one end of the filter cartridge cylinder 27, while several first through-openings 271 are provided at the other end. A filter cover 28 is detachably arranged in the first opening 272, and several second through-openings 281 are formed in the filter cover 28. Furthermore, the filter cartridge assembly 2 preferably has a mounting base 26, inside of which a mounting chamber 262 is formed. One end of the filter cartridge cylinder 27 facing the pressure section 22 is detachably arranged in the assembly space 262 and is in flow communication with it.A flow groove 263 is provided on the mounting base 26 or between the mounting base 26 and the filter cartridge cylinder 27, through which the mounting chamber 262 is in flow communication with the water outlet 12. The locking groove 25 is formed on a side wall of the mounting base 26, and the pressure section 22 is arranged at an end of the mounting base 26 facing away from the first elastic element 4. In practical operation, water flows through the second through-openings 281 of the filter cover 28 into the filter cartridge cylinder 27, flows through the filter material arranged in the filter material receiving chamber 273, and then exits through the first through-openings 271. The water then enters the mounting chamber 262 of the mounting base 26, flows through the flow groove 263, and is finally discharged via the water outlet 12.The removable arrangement of the filter cover 28 on the filter cartridge cylinder 27 allows the user to regularly replace the filter material located in the filter material receiving chamber 273 without having to replace the entire filter cartridge cylinder 27. This reduces operating costs and saves resources.

[0027] Furthermore, the filter cartridge assembly 2 includes a fragrance component 29, which is detachably arranged in the mounting space 262. The detachable arrangement of the fragrance component 29 in the mounting space 262 allows for an additional fragrance function to be provided during the showering process, so that the user can enjoy an aromatherapy experience while showering.

[0028] Specifically, when the filter device is used in a shower head, a first inner body 6 is additionally arranged within the housing 1. One end of the first inner body 6 is in flow communication with the connecting piece 13, while the opposite end is connected to the outlet plate 14. A first water flow chamber 63 is formed between the first inner body 6 and the outlet plate 14. The first elastic element 4 is arranged between an end of the filter cartridge assembly 2 facing away from the pressure section 22 and the first inner body 6. The filter cartridge assembly 2 is arranged within the first inner body 6, with an inner wall of the first inner body 6 and an outer wall of the filter cartridge assembly 2 in close contact with each other. A seal 65 is provided between the inner wall of the first inner body 6 and the outer wall of the filter cartridge assembly 2.In this way, water entering the filter assembly via the connection piece 13 can flow exclusively into the filter cartridge assembly 2 and cannot flow between the inner wall of the first inner body 6 and the outer wall of the filter cartridge assembly 2. This ensures that all water discharged via the water outlet 12 has been filtered by the filter cartridge assembly 2. The water exiting the filter cartridge assembly 2 then flows via the flow groove 263 into the first water flow chamber 63 and is finally discharged via the outlet plate 14. Example 2

[0029] An exemplary embodiment is described below in which the filter cartridge assembly 2 is used in a shower head. With reference to the Fig. 1 and Fig. 2 as well as Fig. 7 to Fig. 10(c) explains in more detail the construction of the filter device according to this embodiment.

[0030] As in the Fig. 1 and Fig. 2 as well as Fig. 7 to Fig. As shown in Figure 10(c), the present embodiment differs from embodiment 1 in that the filter cartridge assembly 2 additionally comprises a movable cylinder 8. The movable cylinder 8 is arranged in the receiving chamber 10, with one end of the movable cylinder 8 facing away from the pressure section 22 being in flow communication with the water inlet 11. A second opening 83 is formed at one end of the movable cylinder 8 facing the pressure section 22. An end of the filter cartridge cylinder 27 facing away from the pressure section 22 is detachably arranged in the movable cylinder 8 via the second opening 83. The first elastic element 4 is arranged between an end of the movable cylinder 8 facing away from the pressure section 22 and the housing 1. Furthermore, an end of the side wall of the mounting base 26 facing away from the pressure section 22 rests against an end of the movable cylinder 8 facing the pressure section 22. As shown in Figure 10(c), the movable cylinder 8 is arranged in the housing 1. Fig. 10a to Fig. As shown in Figure 10c, the movable cylinder 8 can move axially relative to the receiving space 10 under the influence of an external compressive force F1 and / or under the restoring force of the first elastic element 4. The figures in the Fig. 10a to Fig. The motion states of the movable cylinder 8 shown in 10c correspond functionally to those referred to in the Fig. 6a to Fig. The movement states of the filter cartridge assembly 2 described in section 6c are shown in embodiment 1. Since the mode of operation is identical, a further detailed description is omitted here.

[0031] Specifically, when the filter device is used in a shower head, a second inner body 9 is additionally arranged within the housing 1. One end of the second inner body 9 is connected to the housing 1, while the opposite end is connected to the outlet plate 14. A second water flow chamber 93 is formed between the second inner body 9 and the outlet plate 14. Part of the filter cartridge assembly 2 is arranged in the movable cylinder 8, while another part of the filter cartridge assembly 2 is located in the second inner body 9. An outer wall of the movable cylinder 8 rests tightly against an inner wall of the housing 1, with a seal 65 provided between the outer wall of the movable cylinder 8 and the inner wall of the housing 1. Similarly, an inner wall of the movable cylinder 8 and an outer wall of the filter cartridge assembly 2 rest tightly against each other, with a seal 65 also arranged between them.In this way, water entering the filter assembly via the connection piece 13 can flow exclusively into the movable cylinder 8 and subsequently into the filter cartridge assembly 2. This prevents water from flowing between the inner wall of the movable cylinder 8 and the outer wall of the filter cartridge assembly 2, as well as between the outer wall of the movable cylinder 8 and the inner wall of the housing 1. This ensures that all water discharged via the water outlet 12 has been filtered by the filter cartridge assembly 2. The water exiting the filter cartridge assembly 2 then flows through the flow groove 263 into the second water flow chamber 93 and is finally discharged via the outlet plate 14.

[0032] In the filter device according to embodiment 1, the filter cartridge cylinder 27 is absolutely necessary for proper operation. In the present embodiment, however, the arrangement of the movable cylinder 8, as in the Fig. 7 and Fig.As shown in Figure 8, the filter unit remains functional regardless of whether a filter cartridge cylinder 27 is installed or not. Specifically, under the action of the first elastic element 4, an end of the side wall of the mounting base 26 facing away from the pressure section 22 is always in contact with an end of the movable cylinder 8 facing the pressure section 22. This arrangement ensures that the filter unit can be operated normally both with and without the filter cartridge cylinder 27 installed, thus meeting different user requirements. The installation and removal of the filter cartridge assembly 2 and the mounting base 26 are carried out in the same manner in this embodiment as in embodiment 1.The interaction of the elastic locking connection unit 3, the movable element 5, and the locking groove 25, as well as the interaction of the external pressure force F1 with the restoring force of the first elastic element 4, ensures that both the insertion and removal of the filter cartridge assembly 2 or the mounting base 26 is possible simply by pressing the pressure section 22 in the direction of the first elastic element 4. Since the assembly and disassembly process corresponds to that of embodiment 1, a further detailed description is omitted here.

[0033] The exemplary embodiments described above represent only some possible embodiments of the present invention. While the description is detailed and specific, it should not be interpreted as limiting the scope of protection of the present invention. It should be noted that, for a person skilled in the art in the relevant technical field, numerous modifications and further developments are possible within the scope of the present technical teaching without deviating from the fundamental concept of the present invention. Such modifications and further developments also fall within the scope of protection of the present invention. The scope of protection of the present invention is therefore determined exclusively by the content of the accompanying claims. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] CN 201832727U

[0002] CN 220572866U

[0002]

Claims

[1] Filter device comprising a push-operated, quickly removable and mountable filter cartridge assembly, comprising: a housing (1); a filter cartridge assembly (2); and an elastic snap-fit ​​connection unit (3), wherein a water inlet (11) and a water outlet (12) are provided on the housing (1), wherein a receiving chamber (10) is formed inside the housing (1), wherein the filter cartridge assembly (2) is arranged in the receiving space (10) and is detachably connected to the receiving space (10) via the elastic snap-fit ​​connection unit (3), characterized by , - that one end of the filter cartridge assembly (2) is provided with a pressure section (22), the pressure section (22) extending outwards from the receiving chamber (10); - that a first elastic element (4) is arranged between an end of the filter cartridge assembly (2) facing away from the pressure section (22) and the housing (1), - that a locking groove (25) is formed on a side wall of the filter cartridge assembly (2); - that the elastic locking connection unit (3) is designed to engage in the locking groove (25); and - that a movable element (5) is movably arranged in the locking groove (25), wherein under the action of a pressing force (F1) exerted from the outside on the pressing section (22) and / or under the restoring force of the first elastic element (4) the filter cartridge assembly (2) is movable relative to the receiving space (10), and wherein during the movement of the filter cartridge assembly (2) the elastic locking connection unit (3) performs an elastic extension and retraction movement under the action of the movable element (5) and the movable element (5) is movable within the locking groove (25) under the action of the elastic locking connection unit (3). [2] Filter device according to claim 1, characterized by , that at least two mounting grooves (145) are provided in the receiving space (10) on an outer circumferential side of the locking groove (25), wherein an elastic locking connection unit (3) is arranged in each of the mounting grooves (145). [3] Filter device according to claim 1, characterized by , that the elastic locking connection unit (3) has a second elastic element (31) and a locking block (32) connected to the second elastic element (31), wherein the locking block (32) is designed to engage in the locking groove (25), and wherein a first chamfer (322) is provided at an end of the locking block (32) facing the filter cartridge assembly (2), and wherein a second chamfer (52) is provided at an end of the movable element (5) facing away from the filter cartridge assembly (2). [4] Filter device according to claim 3, characterized by, that along a direction from the pressure section (22) to the first elastic element (4) the distance (d1) between points of the first slope (322) and a central axis (X) of the filter cartridge assembly (2) gradually decreases, while the distance (d2) between points of the second slope (52) and the central axis (X) of the filter cartridge assembly (2) gradually increases. [5] Filter device according to any one of claims 1 to 4, characterized by , that the filter cartridge assembly (2) has a filter cartridge cylinder (27) wherein a filter material receiving chamber (273) is formed inside the filter cartridge cylinder (27) and wherein one end of the filter cartridge cylinder (27) is in flow communication with the water inlet (11) and an opposite end of the filter cartridge cylinder (27) is in flow communication with the water outlet (12). [6] Filter device according to claim 5, characterized by , - that a first opening (272) is formed at one end of the filter cartridge cylinder (27) and several first through-openings (271) are provided at an opposite end of the filter cartridge cylinder (27); - that a filter cover (28) is detachably arranged in the first opening (272); and - that several second through-openings (281) are formed in the filter lid (28). [7] Filter device according to claim 5, characterized by , - that the filter cartridge assembly (2) further comprises a mounting base (26) wherein a mounting space (262) is formed inside the mounting base (26) wherein an end of the filter cartridge cylinder (27) facing the pressure section (22) is detachably arranged in the mounting space (262) and is in flow communication with the mounting space (262); - that a flow groove (263) is provided on the mounting base (26) or between the mounting base (26) and the filter cartridge cylinder (27), wherein the mounting space (262) is in flow communication with the water outlet (12) via the flow groove (263); and - that the locking groove (25) is formed on a side wall of the mounting base (26), wherein the pressure section (22) is arranged at an end of the mounting base (26) facing away from the first elastic element (4). [8] Filter device according to claim 7, characterized by , that the filter cartridge assembly (2) further comprises a fragrance component (29), wherein the fragrance component (29) is detachably arranged in the assembly space (262). [9] Filter device according to claim 7, characterized by , - that the filter cartridge assembly (2) further comprises a movable cylinder (8), wherein the movable cylinder (8) is arranged in the receiving space (10), - that an end of the movable cylinder (8) facing away from the pressure section (22) is in flow communication with the water inlet (11), wherein a second opening (83) is formed at an end of the movable cylinder (8) facing the pressure section (22), - that an end of the filter cartridge cylinder (27) facing away from the pressure section (22) is detachably arranged in the movable cylinder (8) via the second opening (83), wherein the first elastic element (4) is arranged between an end of the movable cylinder (8) facing away from the pressure section (22) and the housing (1); and - that an end of a side wall of the mounting base (26) facing away from the pressure section (22) rests against an end of the movable cylinder (8) facing the pressure section (22), wherein the movable cylinder (8) is movable relative to the receiving space (10) under the action of a pressure force (F1) exerted from the outside on the pressure section (22) and / or under the restoring force of the first elastic element (4).

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