KR102414748B1 - Washstand faucet with increased filter management and utility efficiency - Google Patents

Abstract

An object of the present invention is to provide a faucet with improved filter replacement management efficiency and usability, and the configuration of the present invention includes a water discharge connection chamber 114CH, an internal water discharge connection hole 114 and a cartridge coupling body 115 . The cartridge 120 is coupled to the cartridge coupling body 115, and the cold water pipe connection hole 112 and the hot water pipe connection hole 113 provided in the cartridge coupling body 115 have a cold water pipe (6). and a water faucet body 110 to which the hot water pipe 8 is connected; a filter housing 130 coupled to the power receiving body 110 and having an inlet hole 130ISH therein; a filter 140 built into the filter housing 130; A filtering guide cap 150 coupled to the inner end of the filter 140 and provided with a plurality of flow guide protrusions 152 based on the center at the inner end facing the inlet hole 130ISH of the filter housing 130 . ); a water outlet cap 160 coupled to the outer end of the filter 140 and having a cap side water outlet hole 162 communicating with the inside of the filter 140; and a water jetting pipe 170 coupled to the outer circumferential surface of the filter 140 and having a water jetting port 174 communicating with the cap side water outlet hole 162 of the water outlet cap 160 .
The effect of the present invention is that the user can easily check with the naked eye whether it is time to replace the filter 140 because the life of the filter 140 has expired, so that the filter 140 replacement operation can be performed in a timely manner, and the filter 140 replacement By making the work timely, it is possible to maintain the filtering efficiency properly because there is no case where the filter 140 that has reached the end of its life is used as it is or the filter 140 is not exchanged even though the life of the filter 140 is not reached. , various useful results can be expected, such as preventing noise and deterioration due to load resistance caused by water pressure by making water flow more smoothly in the process of water being purified by the filter 140 will be.

Description

Faucet with increased filter management and utility efficiency

The present invention relates to a faucet fitting with improved filter replacement management efficiency and usability, and more particularly, it is possible to easily check whether it is time to replace the filter after the life of the filter has expired while using the faucet, so that the filter replacement operation is performed in a timely manner. It relates to a faucet that improves the efficiency and usability of replacing a new filter with a new configuration that prevents the increase in load resistance or noise when water is discharged.

In general, the faucet fitting that allows both cold and hot water to be used is for a washbasin with only the direct water spout 174 fixed, and for a bathroom with a shower installed in the washbasin, and the direct water spout 174 can be rotated left and right. Separate for one sink.

Among the conventional faucets, the faucet with improved filter replacement management efficiency and usability is installed on the upper surface of the sink bowl. The water spout 174 is directed toward the inside of the sink bowl. These faucet fittings allow cold and hot water to be discharged into the sink to enable washing on the sink bowl.

In the process of washing the face, since the water spout 174 faces the sink, cold water and hot water are received in the sink to wash the face, but it takes time to fill the sink bowl with cold and hot water, so it is generally directly under the water spout 174. It is often the case that you wash your face by placing your hands and receiving cold and hot water and spraying them with cold and hot water.

On the other hand, techniques for using a separate filter mounted on the front of the water outlet 174 of the faucet are widely used. In many cases, a filter cartridge is installed in the water jetting pipe of the faucet so that the water entering the water jetting pipe of the faucet is filtered by the filter of the filter cartridge, and then filtered water comes out through the jetting port 174 of the faucet. .

However, there is a disadvantage in that the filter cartridge must be replaced by guessing because it is difficult to check whether it is time to replace the filter because the life of the filter has expired while using the faucet. If the filter cartridge is replaced by guesswork, there are cases where the filter replacement time has passed or the replacement time has not come yet, but the water jetting pipe part of the faucet must be disassembled and the filter cartridge replaced. .

On the other hand, the filter cartridge has a filter, and an inner cap and an outer cap coupled to the ends of the filter, the inner cap goes into the faucet and the outer cap has a water passage hole communicating with both ends therein, The water supplied from the water supply part of the faucet collides at the end of the inner cap once, then comes in from the outer circumferential surface of the filter to the inner circumferential surface, and the water filtered by the filter passes through the water passage hole inside the outer cap to the water discharge pipe of the faucet fitting. It is configured so that water is jetted through the water jetting port 174 that is there.

However, conventionally, there is a problem that the load resistance is increased and a lot of noise is generated as water supplied at a constant pressure from the water supply part of the faucet collides with the end of the inner cap.

Korea Patent Publication No. 10-2015-0038860 (published on April 09, 2015) Korea Registered Utility Model No. 20-0419784 (Registered on June 19, 2006)

It is an object of the present invention to easily check whether it is time to replace the filter when the life of the filter has expired while using the faucet, so that the filter of a new configuration has various useful functions such as high filter replacement management efficiency such as filter replacement work This is to provide a faucet with improved replacement management efficiency and usability.

According to the present invention for solving the above problems, a water jetting connection chamber, an internal water jetting connection hole, and a cartridge coupling body are provided, a cartridge is coupled to the cartridge coupling body, and a cold water pipe connection hole provided in the cartridge coupling body. and a faucet body to which a cold water pipe and a hot water pipe are respectively connected to the hot water pipe connection hole; a filter housing coupled to the faucet body and having an inlet hole therein; a filter built into the filter housing; a filtering guide cap coupled to the inner end of the filter and provided with a plurality of flow guide protrusions at an inner end of the filter housing facing the inlet hole; a water outlet cap coupled to the outer end of the filter and having a cap-side water outlet hole communicating with the inside of the filter; There is provided a water faucet with improved filter replacement management efficiency and usability, comprising a; is coupled to the outer circumferential surface of the filter and has a water outlet 174 communicating with the water outlet hole on the cap side of the water outlet cap. .

The water faucet body is provided with a water discharge connection pipe having a water discharge connection chamber communicating with the internal water discharge connection hole therein, so that the filter housing is coupled to the water discharge connection pipe part, and the water discharge pipe is coupled to the outer circumferential surface of the filter housing characterized in that it is composed.

The filtering guide cap has a concave groove provided at an inner end facing the inlet hole of the filter housing, a plurality of flow guide protrusions are provided around the concave groove, and a stopper is coupled to the concave groove. do it with

The stopper is characterized in that the stopper side curved portion is provided at the inner end facing the inlet hole of the filter housing.

The filtering guide cap has a curved portion at an outer corner portion.

The filtering guide cap has an insert cap part fitted and coupled to the inner end of the filter, a spacing protrusion extending in the longitudinal direction is provided on an outer circumferential surface of the insert cap part, and the spacing protrusion piece is circumferential with respect to the center of the insert cap part. It is arranged at regular intervals in the direction, characterized in that the flow space is secured between the outer circumferential surface of the insert cap portion of the filtering guide cap and the inner circumferential surface of the filter by the spacing protrusion.

The filter housing includes a see-through housing portion interposed between the outer end of the water discharge connector and the inner end of the water discharge pipe, and the see-through housing portion has a transparent window structure, so that the filter can be viewed from the outside through the see-through housing portion It is characterized in that it is configured so that

A filter is built in the filter housing, a filtering guide cap is coupled to an inner end of the filter, and the filtering guide cap has a concave groove at an inner end facing the inlet hole formed in the filter housing, The groove is formed by a side groove forming wall having one end connected to the filtering guide cap, and a cross groove forming wall connecting to the other end of the side groove forming wall and facing the inlet hole of the filter housing, The inner end of the see-through housing is in contact with the outer end of the water jet connector, the outer end of the see-through housing of the see-through housing is in contact with the inner end of the water discharge pipe, and the depth of the concave groove of the filtering guide cap is on the outside of the see-through housing. It is characterized in that it is made of a depth extending to the end or made of a depth further forward from the outer end of the see-through housing part.

The filter housing is configured such that the inlet hole is provided in the inner end wall, and the plurality of flow guide protrusions of the filtering guide cap are in contact with the inner surface of the inner end wall of the filter housing, and the inner end of the filter housing A flow space is secured between the wall portion and the inner end of the filtering guide cap, and the plurality of flow guide protrusions are configured in a curved protrusion shape when viewed from the front of the inner end wall of the filtering guide cap.

The faucet having improved filter replacement management efficiency and usability according to the present invention enables the user to easily check with the naked eye whether the filter life is over and it is time to replace the filter, so that the filter replacement operation can be performed in a timely manner. It has the effect of maintaining the filtering efficiency properly because it prevents the case of using the expired filter as it is or replacing the filter when the lifespan of the filter is not reached by making the replacement work timely. There are several useful effects, such as being able to prevent noise and deterioration due to load resistance caused by water pressure by making the water flow more smoothly in the process of being purified by the filter.

1 is an exploded perspective view of a faucet body and a filter cartridge, which are main parts of a faucet bracket that improves filter replacement management efficiency and usability according to the present invention;
Figure 2 is a rear longitudinal cross-sectional view of the present invention shown in Figure 1;
3 is an exploded perspective view of a water jetting pipe and a filter cartridge, which are main parts of the present invention;
4 and 5 are side views showing the process of combining the water jetting pipe and the filter cartridge shown in FIG.
6 is a perspective view of a faucet having improved filter replacement management efficiency and usability according to the present invention;
Figure 7 is a side cross-sectional view of Figure 6
8 is a side cross-sectional view showing the process of water purification by the filter, which is the main part of the faucet bracket that improves the filter replacement management efficiency and usability according to the invention;
Fig. 9 is an enlarged side cross-sectional view of the main part shown in Fig. 8;
Figure 10 is a side cross-sectional view showing a modified embodiment of the exit cap, which is another main part of the present invention;
11 is an exploded perspective view of a faucet having improved filter replacement management efficiency and usability according to another embodiment of the present invention;
12 is an exploded perspective view of the filter cartridge and the stopper, which are the main parts shown in FIG. 11;
13 is a rear perspective view showing a state in which the filter cartridge shown in FIG. 12 is coupled to the filter housing and an exploded state of the water discharge pipe;
14 is a side cross-sectional view showing the internal structure of a faucet having improved filter replacement management efficiency and usability according to another embodiment of the present invention;
15 is a longitudinal cross-sectional view taken along line AA of FIG. 14;
16 is a perspective view showing a state in which the water spout of the main part, which is a main part, is coupled to face upward in order to use the faucet of the present invention for brushing teeth;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The objects, features and advantages of the present invention will be more readily understood by referring to the accompanying drawings and the following detailed description. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. For example, when a component is described as being "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to the other component, but between each component. It should be understood that another component may be “connected,” “coupled,” or “connected.”

1 is an exploded perspective view of a faucet body and a filter cartridge, which are main parts of a faucet which have improved filter replacement management efficiency and usability according to the present invention, FIG. 2 is a rear longitudinal sectional view of the present invention shown in FIG. An exploded perspective view of the main part of the water jetting pipe and the filter cartridge, FIGS. 4 and 5 are side views showing the process of combining the water jetting pipe and the filter cartridge shown in FIG. 3, and FIG. 6 is the filter replacement management efficiency and usability improvement according to the invention Fig. 7 is a side cross-sectional view of Fig. 6, Fig. 8 is a side cross-sectional view showing the process of water purification by the filter, which is a main part of the faucet that has improved filter replacement management efficiency and usability according to the invention, Fig. 9 is Fig. 8 is an enlarged sectional side view of the main part, FIG. 10 is a side sectional view showing a modified embodiment of the water outlet cap, which is another main part of the present invention, and FIG. 11 is a filter replacement management efficiency and usability according to another embodiment of the present invention. An exploded perspective view of the improved faucet, FIG. 12 is an exploded perspective view of the main part of the filter cartridge and the stopper shown in FIG. 11, and FIG. 13 is an exploded state of the filter cartridge shown in FIG. 12 coupled to the filter housing and the water jetting pipe 14 is a side cross-sectional view showing the internal structure of a faucet having improved filter replacement management efficiency and usability according to another embodiment of the present invention, FIG. 15 is a longitudinal cross-sectional view taken along the line A-A of FIG. It is a perspective view showing a state in which the water outlet of the water pipe, which is a main part, is coupled to the upper side in order to use the faucet bracket of the present invention to brush teeth.

Referring to the drawings, the faucet having improved filter replacement management efficiency and usability according to the present invention includes a faucet body 110 having a water discharge connection chamber 114CH and an internal water discharge connection hole 114 therein, and the faucet body A filter housing 130 coupled to 110 and having an inlet hole 130ISH therein, a filter 140 built in the filter housing 130 , and a filter coupled to an inner end of the filter 140 . A filtering guide cap 150 having a plurality of flow guide protrusion pieces 152 based on the center at the inner end facing the inlet hole 130ISH of the housing 130 and the filter guide cap 150 are coupled to the outer end of the filter 140 , A water outlet cap 160 having a cap side water outlet hole 162 communicating with the inside of the filter 140, coupled to the outer peripheral surface of the filter 140, and a cap side water outlet hole 162 of the water outlet cap 160, and a water jetting pipe 170 having a water jetting port 174 in communication therewith.

The power receiving body 110 includes a cold water pipe connection hole part 112 , a hot water pipe connection hole part 113 , and a cartridge coupling body part 115 as a housing structure. The power receiving body 110 further includes a water jetting connector 116 . The cold water pipe connection hole part 112 and the hot water pipe connection hole part 113 are provided in the bottom part 115BT constituting the cartridge coupling body part 115 . The cold water pipe 6 is connected to the cold water pipe connection hole 112 , and the hot water pipe 8 is connected to the hot water pipe connection hole 113 .

In a state in which the cartridge 120 is not coupled to the cartridge coupling body 115 , the cold water pipe connection hole 112 and the hot water pipe connection hole 113 of the power receiving body 110 are inside the cartridge coupling body 115 . It communicates with the water jetting connection chamber 114CH inside the power receiving body 110 through the cartridge installation hole of the and the intermediate connection hole 115MH of the bottom part 115BT forming the cartridge coupling body part 115 .

In a state in which the cartridge 120 is coupled to the cartridge coupling body 115 , the cold water pipe connection hole 112 and the hot water pipe connection hole 113 of the power receiving body 110 are on the inside of the cartridge 120 . It is configured to communicate with the intermediate connection hole 115MH, the water discharge connection chamber 114CH and the internal water discharge connection hole 114 inside the power receiving body 110 through the receiving opening, the cold water opening, and the mixed water opening.

The power receiving body 110 includes a water jetting connection chamber 114CH, an internal water jet connecting hole 114, and a cartridge coupling body 115 therein, and the cartridge 120 is coupled to the cartridge coupling body 115 . A cold water pipe 6 and a hot water pipe 8 are connected to the cold water pipe connection hole 112 and the hot water pipe connection hole 113 provided in the cartridge coupling body 115, respectively, so that the cold water pipe 6 It is configured such that the cold water that enters into the hot water pipe 8, and the mixed water of the cold water and hot water passes through the cartridge 120, passes through the water discharge connection chamber 114CH, and comes out through the internal water discharge connection hole 114.

The cartridge 120 is coupled to the cartridge coupling body 115 of the power receiving body 110 . The cartridge coupling body portion 115 is configured in a tubular shape extending in the vertical direction from the power receiving body (110). The cartridge coupling body 115 is a body region having a cartridge installation hole opened up and down inside so that the cartridge 120 for adjusting the water temperature and water discharge amount can be inserted and installed from the upper side.

A cold water pipe 6 is connected to the cold water pipe connection hole 112 of the power receiving body 110, and the cold water through the cold water pipe 6 passes through the cold water pipe connection hole 112 inside the power receiving body 110. After passing through the cartridge The cold water supply state is controlled through the cartridge 120 installed in the coupling body 115 .

The hot water pipe 8 is connected to the hot water pipe connection hole 113 of the power receiving body 110, so that the hot water through the hot water pipe 8 passes through the hot water pipe connection hole 113 inside the power receiving body 110, then the cartridge The hot water supply state is controlled through the cartridge 120 installed in the coupling body 115 .

The cartridge 120 varies the degree of opening and closing for movement of a specific path among the hot water and cold water supply paths through vertical and horizontal adjustment of the open flow path control bar 122 provided on the upper side, and consequently whether hot water or cold water is discharged. It is a configuration that determines whether to be jetted and how much water is jetted.

A fixing nut, a cartridge cover 123, a faucet handle 124, and the like are connected above the open flow path control bar 122 of the cartridge 120, and the user lifts the faucet handle 124 up and down to adjust the amount of water discharged. You can adjust the water temperature by turning it left or right.

When the cartridge 120 is coupled to the cartridge coupling body 115 of the power receiving body 110, the water discharge connection chamber 114CH through the hot water opening, the cold water opening, and the mixed water opening of the cartridge 120. The internal water jetting connection hole 114 provided in the power receiving body 110 is configured to communicate with each other.

The cartridge 120 supplies the cold water pipe connection hole part 112 and the hot water pipe connection hole part 113 to which the cold water pipe 6 and the hot water pipe 8 are connected according to the opening and closing state therein, and the movement of the moving water is divided. It has a receiving opening, an opening for cold water and an opening for mixed water.

By rotating the faucet handle 124 connected to the open flow control bar 122 of the cartridge 120 in the left and right directions, the degree of opening and closing of the hot water opening and the cold water opening of the cartridge 120 is adjusted, and the hot water opening The hot and cold water coming out through the sphere and the cold water opening enters the internal water discharge connection hole 114 provided in the faucet body 110, and the hot water and cold water are mixed through the mixed water opening of the cartridge 120. The mixed water is configured to enter the internal water jetting connection hole 114 in the inside of the power receiving body 110 .

The power receiving body 110 has an internal water jetting connection hole 114 communicating with an opening for hot water, an opening for cold water, and an opening for mixed water of the cartridge 120 therein. The internal water jetting connection hole 114 is disposed below the lower portion of the cartridge 120 . The internal water discharge connection hole 114 communicates with the water discharge connection chamber 114CH inside the power receiving body 110, respectively, so that the cold water entering the cold water pipe connection hole 112 is an opening for the cold water of the cartridge 120. The hot water that enters and enters the internal water discharge connection hole 114, and that enters the hot water pipe connection hole 113, enters the hot water opening of the cartridge 120 and enters the internal water discharge connection hole 114, Mixed water (water mixed with cold water and hot water) entering the water jetting connection chamber 114CH is configured to enter the internal water jetting connection hole 114 through the mixed water opening of the cartridge 120 , respectively. At this time, an intermediate connection hole (115MH) is provided in the bottom portion 115BT of the cartridge coupling body portion 115 to hit the cartridge 120 from below, and the hot water opening and the cold water opening of the cartridge 120 are provided. The hot water and cold water coming out through the fart passes through the intermediate connection hole 115MH of the cartridge coupling body 115 and the water discharge connection chamber 114CH provided in the power receiving body 110, and then passes through the internal water discharge connection hole ( 114), and the mixed water (water mixed with hot water and cold water) coming out through the mixing water opening of the cartridge 120 passes through the intermediate connection hole 115MH of the cartridge coupling body 115 and the power receiving body After passing through the water discharge connection chamber 114CH provided in 110 , it enters the internal water discharge connection hole 114 .

The power receiving body 110 is provided with a cartridge coupling body part 115, the cartridge 120 is coupled to the cartridge coupling body part 115, and the cartridge 120 is mixed with an opening for hot water and an opening for cold water. A water opening is provided, and an internal water discharge connection hole 114 is provided inside the power receiving body 110 , and when hot water comes out of the hot water opening of the cartridge 120 , the internal water discharge connection hole 114 . Hot water comes out through the , and comes into the inlet hole 130ISH of the filter housing 130 to be described later. When the mixed water of hot and cold water comes out from the mixing water opening of the cartridge 120 and coming out toward the inlet hole 130ISH of the filter housing 130, the mixed water comes out through the internal water discharge connection hole 114 and comes out of the filter housing. It enters toward the inlet hole 130ISH of 130 .

The cartridge 120 having an opening for hot water, an opening for cold water, and a mixed water opening is a conventional configuration for controlling so that cold water is discharged from the faucet, hot water is discharged, or mixed water mixed with cold water and hot water is discharged. Further detailed description will be omitted.

The filter housing 130 is coupled to the power receiving body 110 . The power receiving body 110 is provided with a water discharge connection pipe part 116 having an intermediate connection chamber 116CH communicating with the internal water discharge connection hole 114 therein. ) is configured to be combined.

An intermediate hole forming wall 116MW is provided in the intermediate connection chamber 116CH of the water discharge connection pipe 116 to be disposed in front of the internal water discharge connection hole 114, and is intermediately connected to the intermediate hole forming wall 116MW. A water jetting hole 116MCH is provided. The intermediate connection water jetting hole 116MCH communicates with both sides of the intermediate hole forming wall 116MW.

The filter housing 130 has a housing connection part 131 at an inner end facing the water discharge connection pipe part 116 of the faucet body 110 , and a screw part is formed on the outer peripheral surface of the housing connection part 131 , and the water jet A threaded portion is formed on the inner circumferential surface of the connector 116 , and the filter housing 130 is coupled to the water jet connector 116 of the faucet body 110 by coupling the threaded parts. The filter housing 130 is connected to the water discharge connector 116 of the faucet body 110 by coupling the screw on the outer circumferential surface of the housing connection 131 to the screw on the inner circumferential surface of the water discharge connector 116 of the power receiving body 110 . ) by screwing it in, and the filter housing 130 can be separated from the faucet body 110 by screwing it in the water discharge connector 116 of the faucet body 110 .

The filter housing 130 has an inlet hole 130ISH. In the filter housing 130 , the inner end wall part 130IWP is provided at the end of the housing connection part 131 , and the inlet hole 130ISH is provided in the inner end wall part 130IWP. The inlet hole 130ISH communicates with both sides of the inner end wall portion 130IWP. The inlet hole 130ISH of the filter housing 130 communicates with the internal water discharge connection hole 114 of the power receiving body 110 . An intermediate hole forming wall 116MW is provided in the water discharge connection chamber 114CH of the water discharge connection pipe part 116 of the power receiving body 110 to be disposed in front of the internal water discharge connection hole 114, and the intermediate hole forming wall The intermediate connection water jetting hole 116MCH is provided at 116MW, and the intermediate connection water jetting hole 116MCH communicates on both sides of the intermediate hole forming wall 116MW, and the filter housing ( The inlet hole 130ISH of 130 is configured to communicate with the internal water jetting connection hole 114 inside the power receiving body 110 . As a result, the inlet hole 130ISH of the filter housing 130 communicates with the internal water jetting connection hole 114 formed inside the power receiving body 110 .

The filter 140 is embedded in the filter housing 130 . The filter 140 is a filter 140 having a cylindrical structure in which a hollow is formed along the longitudinal direction, and corresponds to a configuration that substantially performs a water purification function. Purification is performed while water passes from the outside of the filter 140 into the hollow inside.

A filtering guide cap 150 is inserted and coupled to the inner end of the filter 140 . The filtering guide cap 150 is a member inserted into the inner end of the filter 140 to block the open space of the longitudinal hole inside the filter 140 at the inner end of the filter 140 , where the inner side of the filter 140 . The stage refers to a direction facing the inlet hole 130ISH of the filter housing 130 when the installation of the power receiving bracket is completed.

The filtering guide cap 150 is configured such that a plurality of flow guide protrusion pieces 152 are provided at an inner end facing the inlet hole 130ISH of the filter housing 130 with respect to the center. The flow guide protrusion piece 152 is brought into contact with the inner end wall portion 130IWP constituting the inlet hole 130ISH of the filter housing 130, so that the inner end wall portion 130IWP and the filtering guide cap 150 are inside. It is configured such that a plurality of flow spaces 154 are secured between the stages.

The filter housing 130 is configured to have an inlet hole 130ISH in the inner end wall portion 130IWP, and a plurality of flow guide protrusions 152 of the filtering guide cap 150 are disposed at the inner end of the filter housing 130 . In contact with the inner surface of the wall portion 130IWP, a flow space 154 is secured between the inner end wall portion 130IWP of the filter housing 130 and the inner end of the filtering guide cap 150 . A flow space 154 is secured between the plurality of flow guide protrusion pieces 152 . A plurality of flow spaces 154 have a structure secured at the inner end of the filtering guide cap 150 . The plurality of flow guide protrusions 152 and the plurality of flow spaces 154 are arranged along the circumferential direction with respect to the center of the filtering guide cap 150 .

Preferably, the plurality of flow guide protrusions 152 are configured in a curved protrusion shape when viewed from the front of the inner end wall 130IPW of the filtering guide cap 150 (see FIG. 13 ). Accordingly, a plurality of flow spaces 154 secured between the flow guide protrusion pieces 152 having the shape of a plurality of curved protrusions are also configured in a curved space shape.

The water outlet cap 160 is inserted and installed at the outer end of the filter 140 , and a water outlet hole 162 is provided inside the filter 140 to move into the hollow inside the filter 140 , so that purified water passes through the outer end of the filter 140 . As a member that allows it to be discharged toward the side, the outer end of the filter 140 here refers to the water outlet 174 side of the water discharge pipe 170 that is discharged through the hollow after the water undergoes purification when the installation of the water faucet is completed. means direction.

The water outlet cap 160 is partially inserted into the outer end of the filter 140 . A part of the water outlet cap 160 is inserted into the outer end of the filter 140 and at the same time, the other end of the water outlet cap 160 has a step 172 on the side of the water discharge pipe 170 provided inside the water discharge pipe 170 . ) is configured to be hung.

The water outlet cap 160 is formed in a tubular shape having a water outlet connection hole communicating with both ends therein. The water outlet connection hole of the water outlet cap 160 communicates with the inner hollow of the filter 140 and the water outlet 174 provided in the water discharge pipe 170 .

A filter assembly in which the filtering guide cap 150 and the water outlet cap 160 are coupled to the inner end and the outer end of the filter 140, respectively. It is maintained in a state coupled to the water discharge pipe 170 by the

A coupling support protrusion 132 is provided on the outer peripheral surface of the filter housing 130 . The coupling support protrusion 132 includes at least two coupling fixing jaws 132A disposed in a direction perpendicular to the longitudinal direction of the filter housing 130 and coupling disposed in a direction crossing the coupling fixing jaw 132A. A stopping jaw (132B) is provided.

The filter housing 130 is provided with a fixed coupling support jaw 133 on the inner peripheral surface. At least two fixed coupling support jaws 133 are provided on the inner circumferential surface of the filter housing 130 . The fixed coupling support jaw 133 has a protrusion shape extending in a direction crossing the longitudinal direction of the filter housing 130 .

In a state in which the filter assembly is inserted into the filter housing 130, the outer end of the filter housing 130 is inserted into the water jetting pipe 170 to form the coupling support protrusion 132 ( When the filter housing 130 is rotated with respect to the water discharge pipe 170 in a state where 132A) is disposed so as to be in front of the fixed coupling support jaw 133 of the water discharge pipe 170 inner circumferential surface, the water discharge pipe 170 inner circumferential surface of the fixed coupling support jaw 133 enters the area of the coupling fixing jaw 132A and is hooked, and one end of the fixed coupling support jaw 133 is hooked on the coupling stopping jaw 132B, so that the filter The housing 130 can be inserted into the water jetting pipe 170 by the engagement of the coupling fixed jaw 132A and the fixed coupling supporting jaw 133 and maintained in a coupled state.

The coupling support protrusion 132 of the filter housing 130 and the fixed coupling support jaw 133 of the water jetting pipe 170 are fixed coupling means.

On the other hand, the fixing coupling means is composed of a housing-side screw portion formed on the outer circumferential surface of the filter housing 130 and a water jetting pipe 170 side screw portion formed on the inner circumferential surface of the water discharge pipe 170 , and attaches the filter housing 130 to the filter housing 130 . It can be coupled to the inside of the water discharge pipe 170 by the housing side screw portion and the water discharge pipe 170 side screw portion.

In a state in which the filter housing 130 and the filter assembly (the filter 140, the filtering guide cap 150, and the water outlet cap 160 are combined) are coupled to the water discharge pipe 170, the filter housing 130 is removed. By coupling to the water discharge connector 116 of the power receiving body 110 , it may be coupled to the power receiving body 110 . By coupling the housing-side outer periphery screw formed on the outer peripheral surface adjacent to the inner end of the filter housing 130 to the inner peripheral threaded portion of the power receiving body 110 side formed on the inner peripheral surface of the water discharge connector 116 of the power receiving body 110, The filter housing 130 and the water discharge pipe 170 in which the filter assembly is embedded may be coupled to the water discharge connection pipe part 116 of the power receiving body 110 . That is, the water discharge pipe 170 is coupled to the power faucet body 110 via the filter housing 130 .

The filter housing 130 includes a see-through housing 135 having a transparent window structure. In a state in which the water discharge pipe 170 is coupled to the water discharge connector part 116 of the power receiving body 110 via the filter housing 130 , the see-through housing part 135 of the filter housing 130 is connected to the power receiving body 110 . It is interposed between the outer end of the water discharge connection pipe portion 116 and the inner end of the water discharge pipe 170 . The see-through housing part 135 protrudes from a portion of the outer peripheral surface of the filter housing 130, so that the see-through housing inner end 135EI and the see-through housing outer end 135EO of the see-through housing part 135 are respectively connected to the faucet body 110 It is configured to be interposed in contact with the outer end of the water discharge connection pipe part 116 and the inner end of the water discharge pipe 170 of the. The see-through housing part 135 is made of a transparent window structure so that the filter 140 can be seen from the outside. The see-through housing part 135 allows the filter 140 to see the outer peripheral surface close to the inner end wall part 130IWP of the filter housing 130 .

The filtering guide cap 150 is provided with a concave groove 156GR at an inner end facing the inlet hole 130ISH of the filter housing 130, and a plurality of flow guide protrusion pieces 152 around the concave groove 156GR. ) is provided, and a stopper 180 is coupled to the concave groove 156GR. The filtering guide cap 150 has an insert cap part 156 inserted into the hollow inside the filter 140 at the inner end of the filter 140, and the concave groove 156GR in the insert cap part 156. is provided, and the stopper 180 is coupled to the concave groove 156GR provided in the insert cap part 156 .

A filter 140 is built in the filter housing 130 , a filtering guide cap 150 is coupled to an inner end of the filter 140 , and the filtering guide cap 150 is attached to the filter housing 130 . A concave groove 156GR is provided at an inner end facing the formed inlet hole 130ISH, wherein the concave groove 156GR includes a side groove forming wall 156SW having one end connected to the filtering guide cap 150, and the side groove It is formed by a cross groove forming wall 156CW which continues to the other end of the forming wall 156SW and faces the inlet hole 130ISH of the filter housing 130 . The insert cap portion 156 of the filtering guide cap 150 is connected to the side groove forming wall 156SW having one end connected to the filtering guide cap 150 and the other end connected to the side groove forming wall 156SW, so that the filter housing It is formed by the cross groove forming wall 156CW facing the inlet hole 130ISH of 130 , and has a structure in which the concave groove 156GR is provided inside the insert cap part 156 .

It is possible to couple the stopper 180 by fitting it into the concave groove 156GR formed in the filtering guide cap 150 .

According to the present invention having the above configuration, water comes out from the internal water discharge connection hole 114 provided in the faucet body 110 and passes through the flow space 154 formed in the filtering guide cap 150 to the filter 140 ) enters the filtering space 142 secured between the outer circumferential surface of the filter housing 130 and the inner circumferential surface of the filter housing 130, and as water passes from the outer circumferential surface of the filter 140 to the inner circumferential surface, it becomes purified as water passes through the inner hollow of the filter 140. The purified water entering the hollow inside the filter 140 can be discharged through the water outlet 174 of the water discharge pipe 170 through the water outlet hole 162 inside the water outlet cap 160 . As shown by the arrow in FIG. 8 , the water entering the filtering space 142 enters the hollow inside of the filter 140 and becomes purified water, and the purified water enters the water outlet hole ( It may be discharged through the water outlet 174 of the water discharge pipe 170 through the 162 .

The filter housing 130 has a housing connection part 131 at an inner end facing the water discharge connection pipe part 116 of the faucet body 110 , and a screw part is formed on the outer peripheral surface of the housing connection part 131 , and the water jet A threaded part is formed on the inner peripheral surface of the connector part 116 , and the filter housing 130 is coupled to the water jet connector part 116 of the faucet body 110 by the coupling of the threaded parts, and the soil coupled to the outer peripheral surface of the filter 140 . The water pipe 170 is disposed at a position protruding to the outside of the power receiving body 110 . The filter housing 130 and the water discharge pipe 170 are connected to the power receiving body 110 by coupling the screw part on the outer peripheral surface of the housing connection part 131 to the thread part on the inner peripheral surface of the water discharge connector part 116 of the power receiving body 110 . The filter housing 130 and the water discharge pipe 170 are screwed in the water discharge connector part 116 of the faucet body 110 to screw the connection to the water discharge connector part 116 of the faucet body 110. ) can be separated from

In the filter housing 130 , the see-through housing part 135 has a transparent window structure so that it can be observed with the naked eye from the outside, so that the filter 140 faces the see-through housing part 135 of the filter housing 130 . By visually checking this discolored state from the outside, the filter 140 can be replaced. That is, a portion of the filter 140 facing the see-through housing part 135 of the filter housing 130 is discolored while being blocked by foreign substances, and the user can change the discolored state of the filter 140 in the filter housing 130 . Through the see-through housing part 135, it is possible to recognize that the filter 140 replacement time has come by visually checking from the outside.

Therefore, in the present invention, the user can easily check with the naked eye whether the filter 140 has reached the end of its service life and it is time to replace it by the see-through housing part 135 of the filter housing 130 in the form of a transparent window. (140) The replacement operation can be performed in a timely manner, and by making the replacement operation of the filter 140 timely, the filter 140 whose life has expired is used as it is, or the life of the filter 140 is expired. Since there is no case of replacing the filter 140 even though it is not, there is an effect that the filtering efficiency can be properly maintained.

Referring to FIG. 8 , in the present invention, among the parts embedded in the filter housing 130 of the filter 140 , the filtering guide cap 150 facing the internal water jetting connection hole 114 of the faucet body 10 is coupled to it. Compared to the in ② area, the ① area where the filtering guide cap 150 is not coupled is first blocked by foreign substances, and the ② area where the filtering guide cap 150 is coupled in the filter 140 is next Since it is clogged by foreign substances, it is possible to efficiently check the replacement time of the filter 140 while extending the life of the filter 140 . In the filter 140, ① the area area is first blocked by foreign substances, and ② the area is blocked by foreign substances. Since it can be recognized that the filter 140 is all clogged by foreign substances, it is possible to change the filter 140 in time.

On the other hand, as shown in FIGS. 12 to 15 , the plug 180 , which is a main part in the present invention, has a plug-side curved portion 182 at the inner end facing the inlet hole 130ISH of the filter housing 130 . . In the stopper 180 , the inner end facing the inlet hole 130ISH of the filter housing 130 is configured in a dome shape so that the stopper 180 faces the inlet hole 130ISH of the filter housing 130 . It is possible to form the inner end of the cap-side curved portion (182). The stopper 180 is inserted into the concave groove 156GR of the filtering guide cap 150 so that the center of the dome-shaped part is arranged on the same line with the center of the concave groove 156GR of the filtering guide cap 150 and coupled .

Accordingly, when water enters at a predetermined pressure from the internal water discharge connection hole 114 of the power faucet body 110 and enters toward the inner end wall 130IWP of the filtering guide cap 150, the stopper 180 provided Even if water hits the stopper-side curved portion 182 at a constant pressure, it flows backward or collides with the water flowing in at a constant pressure (that is, toward the internal water discharge connection hole 114 provided in the faucet body 110). Without generating a vortex by Since it passes to the filtering space 142 secured in between, there is an effect of preventing noise generation due to collision of water under a certain pressure or vortex, and deterioration due to collision or vortex phenomenon of water with pressure (filtering guide cap 150) deterioration of the filter tongue housing, etc.) can also be prevented.

In addition, the filtering guide cap 150 has a curved portion 157 at an outer corner portion. The outer corner portion where the inner end wall portion 130IWP and the outer side wall portion of the filtering guide cap 150 are connected is provided with a curved portion 157 instead of a right angle.

Therefore, water enters at a certain pressure from the internal water discharge connection hole 114 of the faucet body 110 and enters toward the inner end wall 130IWP of the filtering guide cap 150, and then rides the outer corner and the water gently flows over. Since it goes to the filtering space 142 secured between the outer circumferential surface of the filter 140 and the inner circumferential surface of the filter housing 130, there is an effect of more reliably preventing noise caused by the collision or vortex of water under a certain pressure, Deterioration (deterioration of the filtering guide cap 150 or the filter tongue housing, etc.) due to a collision of pressure water or a vortex phenomenon can also be more reliably prevented.

In addition, the filtering guide cap 150 includes an insert cap part 156 inserted into the hollow inside the filter 140 at the inner end of the filter 140 , and the outer peripheral surface of the insert cap part 156 extends in the longitudinal direction. A spacing protrusion (SP) is provided, and the spacing protrusion (SP) is arranged at regular intervals in the circumferential direction with respect to the center of the insert cap part 156, and the filtering guide cap 150 by the spacing protrusion (SP). An inner flow space 153 is secured between the outer circumferential surface of the insert cap portion 156 and the inner circumferential surface of the filter 140 .

Therefore, in the filter 140, water passes through the inner peripheral surface of the outer peripheral surface of a part of the inner end of the filter 140 to which the filtering guide cap 150 is coupled, and an internal flow space 153 secured between the spacing protrusions SP. Since it becomes purified water as it enters the hollow inside the filter 140 through , the efficiency of use of the filter 140 is further increased. That is, since it is used for filtering water from the filter 140 to the portion where the filtering guide cap 150 is coupled (that is, the portion where the insert cap part 156 is coupled), the use efficiency of the filter 140 is increased and the filter ( 140) can be further extended.

In addition, the see-through housing inner end 135EI of the see-through housing portion 135 of the filter housing 130 is in contact with the outer end of the water discharge connector 116 and the see-through housing outer end 135EO of the see-through housing portion 135 is contacted. ) is in contact with the inner end of the water discharge pipe 170 , and the depth DP of the concave groove 156GR of the filtering guide cap 150 is made to a depth extending to the outer end of the see-through housing unit 135 or through the see-through housing unit 135 . of the housing portion 135 to a depth further forward than the see-through housing outer end 135EO. 14, by forming the length of the side groove forming wall 156SW to advance further than the see-through housing outer end 135EO of the see-through housing part 135, the filtering guide cap 150 The depth DP of the concave groove 156GR is made to a depth extending to the see-through housing outer end 135EO of the see-through housing portion 135 or is further advanced than the see-through housing outer end 135EO of the see-through housing portion 135 It can be done in depth. At this time, the length of the stopper 180 is also made of a length that matches the depth DP of the concave groove 156GR of the filtering guide cap 150 .

Therefore, in the state where the part facing the see-through housing part 135 of the filter housing 130 in the filter 140 is not blocked by foreign substances such as scale, and the color is not changed, the Since the part facing the see-through housing part 135 is recognized by the user as a part that can still be filtered, the user misunderstands the filter 140 as dirty and replaces the filter 140 before the replacement time. This can be prevented, and thereby, it is possible to increase the efficiency more in the replacement management of the filter 140 .

In addition, it is possible to delay as much as possible the case of discoloration due to contamination of the filter 140 part facing the see-through housing part 135 in the filter housing 130 while using the faucet, so that the user of the faucet may suffer from contamination of the filter 140 due to contamination. It is also possible to prevent the occurrence of discomfort.

In addition, the filter housing 130 is configured to be provided with an inlet hole 130ISH in the inner end wall portion 130IWP, and a plurality of flow guide protrusions 152 of the filtering guide cap 150 are installed in the filter housing 130 . In contact with the inner surface of the inner end wall portion 130IWP, a flow space 154 is secured between the inner end wall portion 130IWP of the filter housing 130 and the inner end of the filtering guide cap 150, a plurality of flow guides The stone piece 152 is configured in a curved stone piece shape when the inner end of the filtering guide cap 150 is viewed from the front. When it enters toward the inner end of the filtering guide cap 150, the water smoothly turns due to the plurality of flow guide stone pieces 152 in the shape of the curved stone pieces, and the outer circumferential surface of the filter 140 through the flow space 154 and Since it enters the filtering space 142 secured between the inner circumferential surfaces of the filter housing 130, water of a certain pressure collides with a certain pressure in the process of entering from the inside of the faucet body 110 toward the outer circumferential surface of the filter 140 It has the effect of preventing noise or deterioration due to load resistance.

On the other hand, as shown in FIG. 10 , in the present invention, a plurality of spacing protrusion pieces (SP) are also provided on the outer peripheral surface of the water outlet cap 160, so that the outer circumferential surface of the water outlet cap 160 and a portion of the outer end of the filter 140 are formed. It may be configured so that the outer end side water tank and the space 163 are secured between the inner circumferential surface.

The filtering guide cap 150 of the filter 140 enters the filtering space 142 secured between the outer circumferential surface of the filter 140 and the inner circumferential surface of the filter housing 130 and is filtered by the filter 140 . The portion other than the portion to which the water outlet cap 160 and the water outlet cap 160 is coupled is first blocked by foreign substances, and the portion of the filter 140 excluding the portion where the filtering guide cap 150 and the water outlet cap 160 are coupled is first blocked by foreign substances. After mixing, water flows into the outer end side water tank and space 163 secured between the outer circumferential surface of a part of the outer end of the filter 140 and the outer circumferential surface of the water outlet cap 160, and then water flows into the hollow inside the filter 140 This is configured to flow in, so that the outer peripheral surface of a portion of the outer end of the filter 140 is blocked by foreign substances, thereby extending the replacement time of the filter 140 .

In other words, there is an effect that the replacement period of the filter 140 can be further extended by filtering the water (purifying water) from the filter 140 to the part where the water outlet cap 160 is coupled.

On the other hand, in the power faucet of the present invention, when the water outlet 174 provided in the water discharge pipe 170 is coupled to the power receiving body 110 so as to face upward, a certain amount is passed through the water spout 174 of the water discharge pipe 170 . The pressure water is discharged, so that you can brush your teeth with the water that comes out through the water outlet 174 . The faucet bracket of the present invention is mainly installed in the washbasin. When the water outlet pipe 170 is turned from the faucet body 110 so that the water outlet 174 provided in the water outlet pipe 170 faces upward, water flows into the washbasin. It is received and the user can brush teeth with water coming out through the water outlet 174 of the water discharge pipe 170 .

Terms such as "include", "comprise" or "have" described above mean that the corresponding component may be inherent unless otherwise stated, so it does not exclude other components. It should be construed as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms commonly used, such as those defined in the dictionary, should be interpreted as being consistent with the contextual meaning of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

Therefore, since the embodiments described above are provided to fully inform those of ordinary skill in the art to which the present invention belongs the scope of the invention, it should be understood that they are exemplary in all respects and not limiting, The invention is only defined by the scope of the claims.

6. Cold water pipe 8. Hot water pipe
110. Faucet body 112. Cold water pipe connection hole
113. Hot water pipe connection hole 114. Internal water discharge connection hole
115. Cartridge engaging body 115MH. middle connection hole
116. Water discharge connector 116CH. water discharge chamber
116 MW. Middle hole forming wall 116MCH. Intermediate connection spout hole
116 IWP. Inner end wall 115ISH. entrance hall
120. Cartridge 122. Open flow control bar
123. Cartridge cover 124. Faucet handle
130. Filter housing 132. Coupling support protrusion
132A. Combined fixed jaw 132B. Combined stopping jaws
133. Fixed coupling support jaw 135. See-through housing part
140. Filter 142. Filter Space
150. Filtering guide cap 152. Flow guide stone piece
154. Flow space 156. Insert cap part
156 SW. Side home forming wall 156CW. cross home forming wall
156 GR. Concave groove 157. Curved part
160. Exit cap 162. Exit hole
170. Water pipe 172. Stepped
174. spout 180. stopper
182. Cap side curved part SP. spacing stone

Claims (9)

It has a water jet connection chamber 114CH, an internal water jet connection hole 114, and a cartridge coupling body 115, the cartridge 120 is coupled to the cartridge coupling body 115, and the cartridge coupling body 115 is connected to the cartridge coupling body 115. The cold water pipe connection hole 112 and the hot water pipe connection hole 113 are provided with a power receiving body 110 to which the cold water pipe 6 and the hot water pipe 8 are respectively connected;
a filter housing 130 coupled to the power receiving body 110 and having an inlet hole 130ISH communicating with the internal water jetting connection hole 114 of the power receiving body 110 therein;
a filter 140 built into the filter housing 130;
A filtering guide cap 150 coupled to the inner end of the filter 140 and provided with a plurality of flow guide protrusions 152 based on the center at the inner end facing the inlet hole 130ISH of the filter housing 130 . );
a water outlet cap 160 coupled to the outer end of the filter 140 and having a cap side water outlet hole 162 communicating with the inside of the filter 140;
It is coupled to the outer peripheral surface of the filter 140 and the water outlet pipe 170 having a water outlet 174 communicating with the water outlet hole 162 on the cap side of the water outlet cap 160;
The water faucet body 110 is provided with a water discharge connection pipe part 116 having a water discharge connection chamber 114CH communicating with the internal water discharge connection hole 114 therein, so that the water discharge connection pipe part 116 is connected to the filter housing 130 is coupled, and the water discharge pipe 170 is coupled to the outer circumferential surface of the filter housing 130,
The filter housing 130 includes a see-through housing 135 interposed between the outer end of the water discharge connector 116 and the inner end of the water discharge pipe 170 , and the see-through housing 135 has a transparent window. Consisting of a structure, it is configured so that the filter 140 can be viewed from the outside through the see-through housing unit 135,
A filter 140 is built in the filter housing 130 , a filtering guide cap 150 is coupled to an inner end of the filter 140 , and the filtering guide cap 150 is the filter housing 130 . A concave groove 156GR is provided at an inner end facing the inlet hole 130ISH formed in the side groove forming wall 156SW having one end connected to the filtering guide cap 150, and It is formed by a cross groove forming wall 156CW that continues to the other end of the side groove forming wall 156SW and faces the inlet hole 130ISH of the filter housing 130, and is a perspective view of the see-through housing unit 135. The housing inner end 135EI is in contact with the outer end of the water discharge connector 116 and the see-through housing outer end 135EO of the see-through housing portion 135 is in contact with the inner end of the water discharge pipe 170 , The depth DP of the concave groove 156GR of the filtering guide cap 150 is made to a depth extending to the see-through housing outer end 135EO of the see-through housing part 135 or is a see-through housing part 135 of the see-through housing part 135 . A faucet with improved filter replacement management efficiency and usability, characterized in that it has a deeper depth than the housing outer end (135EO).
delete According to claim 1,
The filtering guide cap 150 is provided with a concave groove 156GR at an inner end of the filter housing 130 facing the inlet hole 130ISH, and a plurality of the flow guides around the concave groove 156GR. A faucet having improved filter replacement management efficiency and usability, characterized in that a stone piece (152) is provided, and a stopper (180) is coupled to the concave groove (156GR).
4. The method of claim 3,
The plug 180 is a faucet with improved filter replacement management efficiency and usability, characterized in that the plug-side curved portion 182 is provided at the inner end facing the inlet hole 130ISH of the filter housing 130 . .
4. The method of claim 3,
The filter guide cap 150 is a faucet with improved filter replacement management efficiency and usability, characterized in that it has a curved surface portion 157 at an outer corner portion.
According to claim 1,
The filtering guide cap 150 has an insert cap portion 156 fitted and coupled to the inner end of the filter 140 , and a spacing protrusion SP extending in the longitudinal direction is provided on an outer circumferential surface of the insert cap portion 156 . and the spacing protrusion (SP) is arranged at regular intervals in the circumferential direction with respect to the center of the insert cap part 156, and the insert cap part 156 of the filtering guide cap 150 by the spacing protrusion SP. ) and an inner flow space (154) between the outer peripheral surface of the filter (140), the filter replacement management efficiency and improved usability, characterized in that the faucet.
delete delete According to claim 1,
The filter housing 130 is configured such that the inlet hole 130ISH is provided in the inner end wall portion 130IWP, and the plurality of flow guide protrusions 152 of the filtering guide cap 150 are installed in the filter housing 130 . A flow space 154 is secured between the inner end wall 130IWP of the filter housing 130 and the inner end of the filtering guide cap 150 in contact with the inner surface of the inner end wall portion 130IWP of
The plurality of flow guide protrusions 152 is a faucet with improved filter replacement management efficiency and usability, characterized in that it is configured in a curved protrusion shape when the inner end wall portion 130IWP of the filtering guide cap 150 is viewed from the front. .

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