KR20230127642A - water purifying filter assembly - Google Patents

Abstract

The present invention relates to a water purifying filter assembly and, more specifically, to a water purifying filter assembly where a filter housing and a filter cap are firmly double-coupled and a filter head and a filter cap are firmly coupled in a simple structure. The water purifying filter assembly according to one embodiment of the present invention comprises: a filter housing formed in a barrel shape with an open top to accommodate a filter inside; a filter cap detachably coupled to the top of the filter housing and having a head coupler protruding from the upper surface, an inlet formed in the center of the head coupler, and a water outlet formed around the inlet; a locking ring coupled to the upper circumference of the filter housing to grip the upper circumference of the filter housing to reinforce the coupling force of the filter housing to the filter cap and having a first through-hole formed in the center, through which the head coupler passes; and a filter head having a detachable coupling groove recessed on the lower end, into which the head coupler of the filter cap is removably coupled and an inlet flow path communicating with the inlet and a water outlet flow path communicating with the water outlet formed on the upper side.

Description

Water purifying filter assembly {water purifying filter assembly}

The present disclosure relates to a water filter assembly, and more particularly, to a water filter assembly in which a filter housing and a filter cap are firmly doubly coupled, and a filter head and a filter cap are firmly coupled in a simple structure.

Unless otherwise indicated herein, material described in this section is not prior art to the claims in this application, and it is not admitted that material described in this section is prior art.

The water filter assembly is a device that filters contaminated water and treats it as clean water, and is also called a water purifier or a water purifier.

Water to be purified is introduced into the water filter assembly. That is, the water is introduced through the inflow passage of the filter head, and the inflow water is moved to the filter and various impurities such as bacteria, iron, rust, and organic substances are filtered out and purified. The purified water is discharged again through the water outflow passage of the filter head.

Water purified by the water filter assembly flows into the water filter assembly with a constant water pressure. At this time, components such as a filter head, a filter cap, a filter housing, and a filter constituting the water filter assembly continuously receive an external force due to the water pressure of the inflowing water. Water flowing into the water filter assembly may have a straight or curved flow path. A straight or curved flow path can generate external forces in multiple directions. Such an external force may generate vibration, vibration, shaking, and the like in the components of the water filter assembly. As a result, the bonding force between the components of the water filter is weakened and the components may be separated. When the components are separated, water introduced into the water filter assembly may leak through gaps between the components. That is, a water leakage problem occurs in the water filter assembly.

As a prior art document for solving this leakage problem, Korean Patent Publication No. 10-2021-0102529 (published on August 20, 2021) has a horizontal plate protruding forward a predetermined distance from the front side of the vertical plate, and the horizontal plate A fixing bracket having a pull-release handle movable up and down on the front side of the plate, detachably coupled to the front surface of the lower side of the horizontal plate protrusion in the vertical plate of the fixing bracket, and the front surface of the filter cartridge intake pipe and An inlet coupling pipe and a coupling pipe in which the outlet coupling pipe is inserted and connected to each other and communicates with each other protrudes a predetermined distance. An inlet pipe through which water enters the inside of the housing and an upper rear surface is formed to protrude a predetermined distance backward, On the side of the inlet pipe, a water outlet pipe through which filtered water is discharged through an internal filter material is provided to protrude a predetermined distance to the rear, and is inserted into and coupled to the inlet coupling pipe and the water outlet coupling pipe of the housing as the coupling pipe to form an internal pipe is in communication, and includes a filter cartridge having a fixing jaw protruding from an upper end thereof, and in a state in which the pull release handle of the fixing bracket is pulled upward and moved upward, the inlet pipe and the outlet pipe of the filter cartridge are respectively connected to each other. When inserted and coupled into the water inlet coupling tube and the outlet coupling tube of the conduit housing, the pull release handle moves downward to fix and support the filter cartridge while the rear face of the pull release handle comes into close contact with the front face of the fixing jaw of the filter cartridge. A coupling structure of a filter cartridge for a water purifier, characterized in that, is disclosed.

In addition, Korean Utility Model Registration No. 20-0324064 (published on August 21, 2003) discloses a cylindrical water purifier filter housing separated into a cover and a body, and a support bracket for detachably mounting and supporting the filter housing on a wall plate. detachably, and in addition to the usual screw-type fastening structure in which the cover and body forming the cylindrical filter housing are coupled to each other, a cover in which a plurality of vertical teeth protrude at equal intervals on the outer circumference of the cover of the cylindrical filter housing The toothed part of the body is formed by matching peaks and valleys on the same axis as the toothed part and the toothed part of the cover, and the filter housing support bracket fixed to the wall support plate Fastens the filter housing support bracket of the water purifier in which the toothed part of the inner holder is formed in a double fastening structure In the structure, the cover is formed in a cylindrical shape with a flat top surface and a slightly protruding upper end of the outer circumference, and the bracket holder forms a space portion through which the filter housing is vertically penetrated with the inner circumference where the holder step is formed at the top, and the support bracket holder and support Disclosed is a water purifier filter housing support bracket fastening structure in which the plate is integrally formed without a gap, and the coupling part is loosened, leak prevention is prevented, and the filter is easily replaced.

However, the contents disclosed in the prior art literature stop at facilitating coupling and replacement between the components constituting the water filter assembly, and can firmly maintain the coupling state between the components against the external force generated by the inflow of water. Can't come up with a possible solution.

Korean Patent Publication No. 10-2021-0102529 (2021.08.20. Publication) Republic of Korea Utility Model Registration No. 20-0324064 (Announced on August 21, 2003)

An object of the present invention is to provide a water filter assembly in which a filter housing and a filter cap are firmly coupled in a double coupling structure, and a filter head and a filter cap can be easily coupled in a simple structure.

In addition, it is not limited to the technical problems as described above, and it is obvious that other technical problems may be derived from the following description.

Disclosed is a filter housing formed in a cylindrical shape with an open top and accommodating a filter therein, detachably coupled to the upper end of the filter housing, a head coupler protruding from the upper surface, and an inlet opening formed at the center of the head coupler. A filter cap with an outlet formed around the inlet, coupled to the upper circumference of the filter housing, and holding the upper circumference of the filter housing to reinforce the bonding force of the filter housing to the filter cap, and the head coupling hole in the center A locking ring through which a first through hole is formed and a detachable coupling groove to which the head coupling hole of the filter cap is detachably coupled is formed on the lower side, and the upper side is formed with an inlet passage communicating with the inlet port and water outlet communicating with the outlet port. A water filter assembly including a filter head in which a flow path is formed is presented as an embodiment.

In addition, a bracket member coupled to an upper surface of the locking ring and formed with a second through hole through which the head coupler passes may be further included.

In addition, first locking protrusions are formed on the outer circumferential surface of the upper portion of the filter housing so as to be spaced apart from each other, and the locking groove is formed on the inner circumferential surface of the locking ring so that the first locking protrusion is detachably coupled according to the relative rotation of the filter housing. is formed, and second locking protrusions protrude from both sides of the head coupler of the filter cap, and the second locking protrusion is provided to be detachably coupled to the lower part of the filter head according to the relative rotation of the filter cap. A hole may be formed.

In addition, an anti-loosening protrusion protrudes from an inner circumferential surface of the locking groove, and an anti-loosening groove in which the anti-loosening protrusion is detachably coupled according to the relative rotation of the filter housing may be formed at a central portion of the first locking protrusion. .

In addition, a guide protrusion may be formed on an inner circumferential surface of the locking ring, a guide hole may be formed on an upper surface of the locking ring, and the guide hole may be provided at a position corresponding to the guide protrusion when viewed from a plane.

According to the water filter assembly according to an exemplary embodiment of the present disclosure, the filter housing and the filter cap are firmly coupled with a double bond, so that separation of the filter housing and the filter cap during water treatment can be prevented.

In addition, according to the water filter assembly according to an embodiment of the present disclosure, the filter head and the filter cap can be easily coupled.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view of a water filter assembly according to an embodiment of the present disclosure;
2 is an exploded view of a water filter assembly according to an embodiment of the present disclosure;
3 is a cross-sectional view of a water filter assembly according to an embodiment of the disclosed subject matter;
Figure 4 is a perspective view showing a locking ring extracted from Figure 1;
Figure 5 is a perspective view showing a bracket member extracted from Figure 1;

Hereinafter, with reference to the accompanying drawings, look at the configuration and operational effects of the preferred embodiment. For reference, in the following drawings, each component is omitted or schematically illustrated for convenience and clarity, and the size of each component does not reflect the actual size. In addition, like reference numerals refer to like components throughout the specification, and reference numerals for like components in individual drawings will be omitted.

In the water filter assembly 1 according to an embodiment of the present disclosure, the filter housing 100 and the filter cap 200 are firmly coupled with a double coupling structure, and the filter head 400 and the filter cap 200 have a simple structure. Referring to FIGS. 1, 2, and 3, which can be easily coupled, the filter housing 100 formed in a tubular shape with an open top and in which the filter 110 is accommodated, and the filter housing 100 It is detachably coupled at the top, the head coupler 210 protrudes from the upper surface, the inlet 211 is formed in the center of the head coupler 210, and the outlet 213 is formed around the inlet 211 Filter cap ( 200), coupled to the upper side of the filter housing 100 and gripping the upper circumference of the filter housing 100 to reinforce the bonding force of the filter housing 100 to the filter cap 200, and in the center a head coupler 210 The locking ring 300 through which the first through hole 310 is formed, and the detachable coupling groove 410 to which the head coupling hole 210 of the filter cap 200 is detachably coupled is formed at the bottom, and the upper side includes a filter head 400 in which an inflow passage 420 communicating with the inlet 211 and a water outlet passage 430 communicating with the outlet 213 are formed.

Here, the filter housing 100 forms a space in which the filter cap 200 is coupled and the filter 110 is accommodated and installed, and at the same time forms a filtering passage for water purification therein. It is formed in a shape, in particular, it may be formed in a cylindrical shape.

The filter housing 100 is generally made of synthetic resin or metal material, but is not limited thereto and is preferably made of bioplastics. Bioplastics are manufactured using high-molecular polyesters that are stored in a granular form in the body as an energy source for microorganisms, and can be degraded by bacteria in the soil.

A space portion in which the filter 110 is accommodated is formed inside the filter housing 100 . The diameter of the inner circumferential surface of the filter housing 100 is provided larger than the diameter of the outer circumferential surface of the filter 110 . While the filter 110 is accommodated in the filter housing 100 , an outer flow path A is formed between the outer circumferential surface of the filter 110 and the inner circumferential surface of the filter housing 100 . The outer flow path A is a flow path into which purified water is joined while water flowing into the central flow path B inside the filter 110 passes from the inner side to the outer side in the radial direction.

In the water filter assembly 1 according to an embodiment of the present disclosure, the first locking protrusion 120 may be protruded from the upper outer circumferential surface of the filter housing 100 . A plurality of first locking protrusions 120 may be protruded and spaced apart from each other at preset intervals.

The first locking protrusion 120 reinforces the coupling force between the filter cap 200 and the filter housing 100, and can be detached from the locking groove 320 of the locking ring 300 to be described later by interference fit. can be conjoined. As the filter housing 100 and the locking ring 300 rotate relative to each other, the first locking protrusion 120 of the filter housing 100 may be coupled to or separated from the locking groove 320 of the locking ring 300 .

In addition, a release prevention groove 121 may be formed at the center of the first locking protrusion 120 . The anti-loosening groove 121 reinforces the coupling force between the filter housing 100 and the locking ring 300 to prevent loosening due to rotation. (321) can be combined.

The anti-loosening groove 121 may be formed in the central portion of the first locking protrusion 120 with a predetermined width and depth. As the first locking projection 120 is coupled to the locking groove 320 by the relative rotation of the filter cap 200 and the filter housing 100, the release prevention projection 321 may also be coupled to the release prevention groove 121. .

The filter cap 200 closes the top of the filter housing 100 and allows water flowing from the water supply passage 420 of the filter head 400 to flow into the filter 110, and the water flowing into the filter 110 After the water treatment is performed, the filter head 400 is introduced into the water outlet 430, and is detachably coupled to the top of the filter housing 100.

The filter cap 200 is generally made of synthetic resin or metal material, but is not limited thereto and is preferably made of bioplastic.

The filter cap 200 is inserted into and coupled to the inner circumferential surface of the filter housing 100 . That is, the lower portion of the filter cap 200 includes an insertion portion 230 provided with a diameter corresponding to the inner circumferential surface of the filter housing 100, and the head coupler 210 protrudes from the upper portion of the filter cap 200. .

The insertion part 230 of the filter cap 200 is formed in an open cylindrical shape, and the top of the filter 110 is inserted into the inside of the opening of the insertion part 230 . The insertion portion 230 may be detachably coupled to the top of the filter housing 100 by screwing or the like. For example, a screw groove 231 may be provided on the outer circumferential surface of the insertion part 230 . The screw groove 231 may be coupled to a screw protrusion 130 provided at an upper end of the inner circumferential surface of the filter housing 100 .

The filter cap 200 is directly coupled to the filter housing 100 as the insertion portion 230 is coupled to the upper end of the filter housing 100 .

The filter cap 200 may be indirectly coupled to the filter housing 100 as the locking ring 300 is coupled to the upper circumference of the filter housing 100 . For example, the filter cap 200 can be indirectly coupled to the filter housing 100 by coupling the first locking protrusion 120 of the filter housing 100 to the locking groove 320 of the locking ring 300 to be described later. there is.

Due to the direct coupling between the filter cap 200 and the filter housing 100, even if water flows into the filter assembly during the water purification process and water pressure is applied, the filter cap 200 and the filter housing 100 are not separated and maintain a solid coupling state. can In addition, as the locking ring 300 is coupled to the upper circumference of the filter housing 100, the filter cap 200 and the filter housing 100 are mutually pressurized to reinforce the bonding force of the filter housing 100 to the filter cap 200. can That is, the filter cap 200 and the filter housing 100 may have a double coupling structure in which they are directly coupled and indirectly coupled.

A head coupler 210 protrudes from the upper surface of the filter cap 200, an inlet 211 is formed at the center of the head coupler 210, and a water outlet 213 is formed around the inlet 211.

The head coupler 210 allows water introduced through the water supply passage 420 of the filter head 400 to flow into the filter 110, and the purified water in the filter 110 is discharged from the filter head 400. It flows out toward the flow path 430 and is inserted into the filter head 400 .

An inlet 211 is formed at the center of the head coupler 210. Water introduced through the water inlet passage 420 of the filter head 400 flows into the central passage B in the filter 110 while passing through the inlet 211 .

A water outlet 213 is formed around the inlet 211 . The outlet 213 may be formed at a position lower than the inlet 211 in a concentric circle shape. Water purified by the filter 110 is discharged to the water outlet 430 of the filter head 400 while passing through the outlet 213 .

A coupled stepped groove 214 coupled to the lower end of the inner circumferential surface of the filter head 400 may be formed around the water outlet 213, and a coupled stepped groove 214 corresponding to the coupled stepped groove 214 may be formed at the lower end of the inner circumferential surface of the filter head 400. The protrusion 450 may protrude. By combining the coupling step groove 214 of the filter cap 200 and the coupling step projection 450 of the filter head 400, the water introduced through the water supply passage 420 of the filter head 400 is directly filtered through the filter 110. It may flow into the inner central flow path (B). In addition, the water purified by the filter 110 may flow directly into the water outlet 430 of the filter head 400 from the outer flow path A. That is, a flow path of water flowing into the filter 110 and a flow path of purified water in the filter 110 are separated by a tight coupling between the filter cap 200 and the filter head 400 . The separated flow path can prevent water flowing into the filter 110 during the water purification process from mixing with water purified by the filter 110 .

In the water filter assembly 1 according to an embodiment of the present disclosure, second locking protrusions 220 may be formed on both sides of the head coupler 210 . The second locking protrusions 220 may be spaced apart from each other at preset intervals.

The second locking protrusion 220 reinforces the binding force of the filter head 400 to the filter cap 200, and is detachably coupled to the locking hole 440 of the filter head 400 to be described later through an interference fit. can The second locking protrusion 220 and the locking hole 440 may be coupled or separated according to the relative rotation of the filter cap 200 and the filter head 400 .

Referring to FIG. 4 , the locking ring 300 reinforces the bonding force of the filter housing 100 to the filter cap 200 by gripping the upper circumference of the filter housing 100. It is joined to the upper circumference. The locking ring 300 is generally made of synthetic resin or metal material, but is not limited thereto and is preferably made of bioplastic.

A first through hole 310 through which the head coupler 210 passes may be formed at the center of the locking ring 300 . The locking ring 300 may come into contact with the circumference of the upper surface of the filter cap 200 while the head coupler 210 passes through the first through hole 310 .

In the water filter assembly 1 according to an embodiment of the present disclosure, a locking groove 320 may be formed on an inner circumferential surface of the locking ring 300 . A plurality of locking grooves 320 may be formed to be spaced apart from each other at preset intervals. The locking grooves 320 may be formed in the same number and spacing as the first locking protrusions 120 described above.

The locking groove 320 reinforces the coupling force between the filter cap 200 and the filter housing 100, and the first locking protrusion 120 can be detachably coupled to the locking groove 320. As the filter housing 100 and the locking ring 300 rotate relative to each other, the first locking protrusion 120 of the filter housing 100 may be coupled to or separated from the locking groove 320 of the locking ring 300 .

In addition, an anti-loosening protrusion 321 may protrude from the inner circumferential surface of the locking groove 320 . The anti-loosening protrusion 321 reinforces the coupling force between the filter housing 100 and the locking ring 300 to prevent loosening due to rotation, and is coupled to the anti-loosening groove 121 of the first locking protrusion 120 described above. It can be.

The anti-loosening protrusion 321 may protrude from the inner circumferential surface of the locking groove 320 with a predetermined width and height. By the relative rotation of the filter cap 200 and the filter housing 100, the first locking protrusion 120 is coupled to the locking groove 320, and at the same time, the anti-release protrusion 321 can also be coupled to the anti-release groove 121. there is.

A guide protrusion 330 may protrude from the inner circumferential surface of the locking ring 300 . A guide hole 340 may be formed on an upper surface of the locking ring 300 . The guide hole 340 may be provided at a position corresponding to the guide protrusion 330 when the locking ring 300 is viewed from a plane. When the locking ring 300 is viewed from a plane, the guide protrusion 330 can enter the human field of view through the guide hole 340 . Therefore, when the head coupler 210 of the filter cap 200 passes through the first through hole 310 of the locking ring 300 and the locking ring 300 is coupled to the upper circumference of the filter housing 100, the guide The protrusion 330 and the guide hole 340 may guide the locking ring 300 to move along a linear path with respect to the filter housing 100 .

That is, the guide protrusion 330 moves in a linear direction while passing through the anti-loosening groove 121 of the first locking protrusion 120, and accordingly, the locking ring 300 moves in a linear direction with respect to the filter housing 100. It can be. Then, the locking ring 300 and the filter housing 100 may be coupled according to mutual relative rotation.

The guide protrusion 330 is preferably formed in a smaller size than the loosening prevention groove 121 of the first locking protrusion 120 . In this case, the guide protrusion 330 can pass without being caught in the anti-loosening groove 121 .

Referring back to FIGS. 1, 2 and 3 , the filter head 400 is detachably coupled to the head coupler 210 of the filter cap 200.

The filter head 400 is used to introduce water to be treated and outflow of water to be treated, and is generally made of a synthetic resin or metal material, but is not limited thereto, and is preferably made of bioplastic.

A detachable coupling groove 410 is formed at the lower end of the filter head 400, and a water intake passage 420 and a water outlet passage 430 are formed at the upper side. The water intake passage 420 communicates with the water inlet 211 of the filter cap 200, and the water outlet passage 430 communicates with the water outlet 213 of the filter cap 200.

A locking hole 440 may be provided under the filter head 400 . The locking hole 440 may be formed in a size and number corresponding to the aforementioned second locking protrusion 220 .

The locking hole 440 reinforces the binding force of the filter head 400 to the filter cap 200, and the second locking protrusion 220 of the filter cap 200 is detachable from the locking hole 440 through an interference fit. can possibly be combined. The locking hole 440 and the second locking protrusion 220 may be coupled or separated according to the relative rotation of the filter cap 200 and the filter head 400 .

Referring to FIG. 5 , the water filter assembly 1 according to an embodiment of the present disclosure may further include a bracket member 500 . The bracket member 500 is fixed to the case or wall surface of the water filter assembly 1, and may be fixed to the case or wall surface by screws or pins.

The bracket member 500 may be coupled to an upper surface of the locking ring 300 and a second through hole 510 through which the head of the filter cap 200 passes may be formed. The second through hole 510 may be formed equal to or larger than the outer circumferential diameter of the lower end of the filter head 400 . In this case, a coupling part 460 that can be coupled to the bracket member 500 may be formed on the lower outer circumferential surface of the filter head 400 . A coupling hole 520 may be formed around the second through hole 510 of the bracket member 500 at a position corresponding to the coupling portion 460 . The fastening member 470 , such as a screw or a pin, is coupled to the coupling portion 460 while penetrating the coupling hole 520 , and may couple the bracket member 500 and the filter head 400 .

The coupling portion 460 may be formed at a lower end of the filter head 400 to be stepped. The coupling part 460 formed in a stepped manner may be seated on the upper surface of the bracket member 500 . Accordingly, the bracket member 500 may not act as an obstacle to the coupling between the filter head 400 and the filter cap 200.

Hereinafter, a coupling process of the water filter assembly 1 according to an embodiment of the disclosure will be described.

The filter cap 200 is coupled to the top of the filter 110 . The filter 110 is accommodated inside the filter housing 100 while being coupled with the filter cap 200, and the filter cap 200 is coupled to the filter housing 100 while closing the top of the filter housing 100. Then, while the head coupler 210 of the filter cap 200 passes through the first through hole 310 of the locking ring 300, the locking ring 300 moves along a straight line path with respect to the filter housing 100. do. At this time, the guide protrusion 330 and the guide groove of the locking ring 300 can move the locking ring 300 along a straight line path with respect to the filter housing 100 . The locking ring 300 may contact the upper surface of the filter cap 200 and then rotate in a horizontal direction. According to the relative rotation of the locking ring 300 and the filter housing 100, the first locking protrusion 120 of the filter housing 100 is coupled to the locking groove 320 of the locking ring 300 and at the same time the locking groove 320 The release prevention protrusion 321 may also be coupled to the release prevention groove 121 of the first locking protrusion 120 . In addition, as the head coupler 210 of the filter cap 200 is inserted into the detachable coupling groove 410 of the filter head 400, the coupling step protrusion 450 of the filter head 400 engages the filter cap 200. It may be coupled to the stepped groove 214. With the lower end of the filter head 400 in contact with the upper surface of the filter cap 200, the filter head 400 may be rotated in a horizontal direction. As the filter cap 200 and the filter head 400 rotate relative to each other, the second locking protrusion 220 of the filter cap 200 may be coupled to the locking hole 440 of the filter head 400 . In addition, the filter head 400 may be coupled to the filter cap 200 in a state in which the bracket member 500 is coupled to the filter head 400 .

According to the water filter assembly 1 according to an embodiment of the foregoing disclosure, the filter housing 100 and the filter cap 200 are firmly coupled with a double bond, so that the filter housing 100 and the filter cap ( 200) can be prevented from being separated.

In addition, according to the water filter assembly 1 according to an embodiment of the present disclosure, the filter head 400 and the filter cap 200 can be easily coupled.

Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and represent all the technical ideas of the present invention. Since it is not, it should be understood that there may be various equivalents and modifications that can replace them at the time of this application. Therefore, the embodiments described above should be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of the claims and their All changes or modified forms derived from equivalent concepts should be construed as being included in the scope of the present invention.

1: water filter assembly
100: filter housing
110: filter
120: first locking protrusion
121: anti-loosening groove
130: screw protrusion
200: filter cap
210: head coupler
211: inlet
213: outlet
214: combined step groove
220: second locking protrusion
230: insertion part
231: screw groove
300: locking ring
310: first through hole
320: locking home
321: anti-loosening projection
330: guide protrusion
340: guide hole
400: filter head
410: detachable coupling groove
420: intake flow
430: exit flow
440: locking hole
450: combined step protrusion
460: coupling part
470: fastening member
500: bracket member
510: second through hole
520: coupling hole
A: outer flow path
B: Central Euro

Claims (5)

a filter housing formed in a tubular shape with an open top and containing a filter therein;
a filter cap detachably coupled to an upper end of the filter housing, a head coupler protruding from the upper surface, an inlet formed at the center of the head coupler, and a water outlet formed around the inlet;
a locking ring coupled to the upper circumference of the filter housing, gripping the upper circumference of the filter housing, reinforcing the coupling force of the filter housing to the filter cap, and having a first through hole through which the head coupler passes; and
A water filter assembly including a filter head in which a detachable coupling groove to which the head coupling port of the filter cap is detachably coupled is formed on the lower side and an inlet flow path communicating with the inlet port and a water outlet channel communicating with the outlet port are formed on the upper side. . The method of claim 1,
The water filter assembly further comprising a bracket member coupled to an upper surface of the locking ring and having a second through hole through which the head coupler passes. According to claim 1 or claim 2,
First locking protrusions are formed on an outer circumferential surface of the upper portion of the filter housing to protrude apart from each other, and a locking groove is formed on an inner circumferential surface of the locking ring so that the first locking protrusion is detachably coupled according to the relative rotation of the filter housing. becomes,
A second locking protrusion protrudes from both sides of the head coupling hole of the filter cap, and a locking hole is formed at the bottom of the filter head to detachably couple the second locking protrusion according to the relative rotation of the filter cap. water filter assembly. The method of claim 3,
Anti-loosening protrusions are formed on the inner circumferential surface of the locking groove,
The water filter assembly of claim 1 , wherein an anti-loosening groove is formed at the center of the first locking protrusion to which the anti-loosening protrusion is detachably coupled according to the relative rotation of the filter housing. According to claim 3 or claim 4,
A guide protrusion protrudes from the inner circumferential surface of the locking ring,
A guide hole is formed on an upper surface of the locking ring, and the guide hole is provided at a position corresponding to the guide protrusion when viewed from a plan view.

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