JP6386960B2 - Filter structure and stop cock device having the same - Google Patents

Description

  The present invention relates to a filter structure and a water faucet device including the same.

  2. Description of the Related Art Conventionally, a filter structure in which a cylindrical strainer is attached in a water stopcock channel is known (for example, see Patent Document 1). In this filter structure, the flowing water flowing in from the upstream side passes from the inside of the strainer to the outside, thereby removing foreign matters in the flowing water.

JP 2010-221125 A

  By the way, in the filter structure, it is necessary to periodically remove foreign substances accumulated in the strainer. However, in the conventional filter structure, since there is a gap between the strainer and the inner peripheral surface of the flow path, when the strainer is detached, the strainer tilts and comes into contact with the inner peripheral surface of the flow path. There was a problem of being bad.

  The present invention has been made in view of the above, and an object of the present invention is to provide a filter structure in which a strainer can be easily attached and detached, and which can be easily assembled, and a water stopcock device including the filter structure.

  In order to achieve the above object, the present invention provides a filter structure (for example, a filter structure 5 described later) for removing foreign substances in running water, and a first channel (for example, a first channel described later) that extends substantially linearly. 61) and a second body (for example, a second channel 62 described later) that communicates with the downstream side of the first channel and extends in a direction intersecting the first channel. For example, it is inserted in the direction of the central axis (for example, axis X described later) of the first flow path from the downstream side of the first flow path and the main body section 6) described later, and is detachable from the first flow path. A cylindrical strainer (for example, a strainer 8 to be described later) that is attached and removes foreign matter in the running water by passing the flowing water flowing in from the upstream side of the first channel from the inside to the outside and guiding it to the second channel. And the strainer has a small diameter portion (on the distal end side in the insertion direction) For example, a filter structure having a small-diameter portion 811 described later and a large-diameter portion (for example, a large-diameter portion 812 described later) provided on the proximal end side in the insertion direction and having a larger outer diameter than the small-diameter portion is provided. To do.

  The first flow path has a downstream flow path (for example, a downstream flow path 612 described later) to which the strainer is detachably attached, and the downstream flow path is upstream of the first flow path. A small-diameter channel (for example, a small-diameter channel 612a described later) and a large-diameter channel (for example, a large-diameter channel 612b described below) provided on the downstream side of the small-diameter channel and having a larger inner diameter than the small-diameter channel. The large-diameter portion preferably has an outer diameter larger than the inner diameter of the small-diameter channel and smaller than the inner diameter of the large-diameter channel.

  The large-diameter portion is preferably constituted by a plurality of ribs (for example, ribs 812a described later) extending in the insertion direction.

  The small-diameter portion preferably has an annular elastic member (for example, an O-ring 81a described later) attached to the outer periphery thereof.

  Further, the present invention provides any one of the above-described filter structures and a water stop plug member (for example, a water stop plug described later) provided to extend from the upstream side to the inside of the strainer from the upstream side of the strainer and open and close the first flow path. Plug member 7) and an annular member (for example, a dust catch to be described later) in which an annular groove (for example, a groove portion 83a described later) is formed which is detachably attached to the inner periphery of the tip of the small-diameter portion and opens downstream. And a stop cock device (for example, a stop cock device 50 described later).

  ADVANTAGE OF THE INVENTION According to this invention, a strainer can be attached or detached easily and a filter structure with favorable assembly | attachment property and a water stop cock apparatus provided with the same can be provided.

It is a side view of a toilet device to which a stopcock device provided with a filter structure concerning one embodiment of the present invention was applied. It is a front view of the toilet device to which the water stop cock device concerning the above-mentioned embodiment was applied. It is a disassembled perspective view of the water stop cock device concerning the above-mentioned embodiment. It is a longitudinal cross-sectional perspective view in the open state of the water tap apparatus which concerns on the said embodiment. It is a longitudinal cross-sectional view in the open state of the water tap apparatus which concerns on the said embodiment. It is a longitudinal cross-sectional view in the closed state of the water tap apparatus which concerns on the said embodiment. It is a transverse cross section of the main part which constitutes the filter structure concerning the above-mentioned embodiment. It is a perspective view which shows a mode that a strainer is attached to the water faucet device which concerns on the said embodiment.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a side view of a toilet device to which a water faucet device having a filter structure according to this embodiment is applied. FIG. 2 is a front view of a toilet device to which a water faucet device having a filter structure according to this embodiment is applied.

  As shown in FIG. 1 and FIG. 2, a water faucet device 50 having a filter structure according to the present embodiment includes a water supply source pipe (not shown) drawn from the outside to the floor F in the toilet room R, and a later-described The water supply pipe 41 of the toilet device 100 to be connected is connected. Further, the water stopper device 50 has a function of switching between water flow and water stop of the water supply pipe 41.

First, the toilet device 100 will be described.
As shown in FIGS. 1 and 2, the toilet device 100 is disposed below the toilet bowl 10, the wash water tank 20, the backrest 30 disposed on the front side of the wash water tank 20, and the wash water tank 20. A side cover 40.

  The toilet 10 includes a toilet main body 11 and a toilet seat 12 attached to the upper portion of the toilet main body 11 so as to be openable and closable with respect to the toilet main body 11. The toilet body 11 has an opening (not shown) formed on the upper surface. The toilet seat 12 has an opening (not shown) at the center in plan view.

  As shown in FIGS. 1 and 2, the washing water tank 20 is disposed behind and above the toilet bowl 10. A pair of armrests 201 and 201 for armrests are provided on the side surfaces on both sides of the cleaning water tank 20. The pair of armrest portions 201, 201 are formed so as to extend from the side surfaces on both sides of the cleaning water tank 20 to the front side of the cleaning water tank 20. As shown in FIG. 2, an operation button 202 is provided on one side surface of the cleaning water tank 20. The operation button 202 is a button for releasing the cleaning water stored in the cleaning water tank 20 from the cleaning water tank 20.

  The backrest 30 is attached to the front surface of the cleaning water tank 20. The user can make the backrest part 30 lean back during the stool.

  The side cover 40 is disposed behind the toilet 10 in the lower part of the toilet device 100. A water supply pipe 41 and a drain pipe (not shown) are arranged inside the side cover 40. The water supply pipe 41 is connected to a stop cock device 50 described later, and supplies water to the toilet device 100. The drain pipe discharges the wash water discharged from the toilet 10 to the outside.

Next, the water faucet device 50 provided with the filter structure according to the present embodiment will be described with reference to FIGS.
Here, FIG. 3 is an exploded perspective view of the water stopper device 50 including the filter structure according to the present embodiment. FIG. 4 is a longitudinal sectional perspective view of the water stop cock device 50 in the open state. FIG. 5 is a longitudinal sectional view of the water stop cock device 50 in the opened state. FIG. 6 is a longitudinal sectional view of the water stop cock device 50 in the closed state. FIG. 7 is a transverse cross-sectional view of the main body part constituting the filter structure according to the present embodiment. FIG. 7 shows only the main body.

  As shown in FIG. 3, the stop cock device 50 includes a main body portion 6, a stop cock member 7, a strainer 8, and a cap 9. The water stopper member 7, the strainer 8, and the cap 9 are all disposed on the same axis X as the first flow path 61 of the main body 6 described later. The filter structure 5 according to the present embodiment includes a main body portion 6, a strainer 8, and a cap 9. This filter structure 5 has a function of removing foreign substances in running water.

  The main body 6 includes a first flow path 61 and a second flow path 62. The first flow path 61 is configured by a substantially cylindrical pipe extending linearly in the vertical direction. The second flow path 62 is configured by a substantially cylindrical pipe that communicates with the downstream end (the upper end in FIG. 3) of the first flow path 61 and extends in the horizontal direction orthogonal to the first flow path 61. That is, the first flow path 61 and the second flow path 62 communicate with each other with their center axes X and Y orthogonal to each other.

  The upstream side (downward in FIG. 3) of the first flow path 61 is formed with a smaller outer diameter than the downstream side, and is inserted into an attachment hole (not shown) formed in the floor F. Further, a male screw portion 61a is formed on the outer periphery of the upstream end of the first flow path 61, and a female screw on the water supply source pipe (not shown) side is screwed into the male screw portion 61a. As a result, the water supply source pipe is connected to the upstream end of the first flow path 61, and the water supplied from the water supply source pipe is supplied into the first flow path 61.

  As shown in FIGS. 4 to 6, the first channel 61 includes an upstream channel 611 provided on the upstream side, a downstream channel 612 provided on the downstream side, and these upstream channels 611. And a water stop hole portion 613 provided between the downstream side flow path 612 and the downstream side flow path 612.

  The upstream channel 611 has a smaller inner diameter than the downstream channel 612 and has a constant diameter in the axis X direction. Water is supplied to the upstream channel 611 from a water supply source pipe.

  The downstream channel 612 has a larger inner diameter than the upstream channel 611. As will be described later, the strainer 8 is inserted and accommodated in the downstream channel 612 from the downstream side (downstream end) in the axis X direction along the inner peripheral surface. Therefore, the inner peripheral shape of the downstream flow path 612 is a shape along the outer peripheral shape of the strainer 8. That is, corresponding to a small-diameter portion 811 and a large-diameter portion 812 of the strainer 8 to be described later, the downstream-side channel 612 includes a small-diameter channel 612a provided on the upstream side and a small-diameter channel 612a provided on the downstream side. A large-diameter channel 612b having a large inner diameter is also provided. Thereby, only a slight gap is formed between the inner peripheral surface of the downstream flow path 612 and the outer peripheral surface of the large-diameter portion 812 of the strainer 8, and the large-diameter portion 812 of the strainer 8 exhibits a guide function. Therefore, it is possible to suppress the strainer 8 from being inclined during insertion.

  An internal thread portion 612c is formed on the inner periphery of the downstream end of the downstream channel 612. A male screw portion 9a formed on the outer periphery of the upstream end of the cap 9 connected to the downstream end of the strainer 8 described later is screwed into the female screw portion 612c.

The water stop hole 613 includes a water stop hole 613a, a valve seat 613b, and a female screw part 613c.
The water stop hole 613a is formed by a hole having a smaller diameter than the upstream flow path 611. The valve seat 613b is formed in a taper shape whose diameter is increased toward the downstream side, and a piece valve 71 provided at the front end of a water stopper member 7 described later is seated. Thereby, the water stop hole 613a is closed and water is stopped. The male screw portion 72 of the water stop cock member 7 is screwed into the female screw portion 613c.

  Here, as shown in FIG. 7, a pair of notch portions 612 f are formed in the bottom surface portion 612 e at the upstream end of the downstream flow path 612. Thereby, when the piece valve 71 of the water stop cock member 7 described later is disengaged from the valve seat 613b, the water is passed through the downstream channel 612.

  As shown in FIGS. 3 to 6, a groove 62 a is formed on the outer periphery of the downstream end of the second flow path 62. The water supply pipe 41 is connected to the second flow path 62 by fitting the water supply pipe 41 into the groove 62a. The second channel 62 is connected to and communicates with the downstream channel 612 of the first channel 61.

  As shown in FIG. 3, the water stopcock member 7 is formed in a substantially cylindrical shape as a whole. The water stopper member 7 includes a piece valve 71, a male screw portion 72, and a spindle 73. The water stopper member 7 has a function of opening and closing the first flow path 61. The length of the stop cock member 7 in the axis X direction is set longer than the length of the downstream flow path 612 in the axis X direction, and the stop cock member 7 is connected to the strainer from the upstream side of the strainer 8 described later. It extends through the inside of 8 to its downstream end.

  The piece valve 71 is provided at the front end of the water stopper member 7 and is attached to the front end of the spindle 73 by a screw 7a. When the piece valve 71 is seated on the valve seat 613b, the first flow path 61 is closed.

  The male screw portion 72 has a larger diameter than the piece valve 71 and is screwed into the female screw portion 613c of the water blocking hole portion 613 described above. As a result, the position of the stop cock member 7 in the direction of the axis X of the first flow path 61 is adjusted, and the stop cock member 7 is attached and fixed in the first flow path 61. That is, the water stopper member 7 advances and retreats in the direction of the axis X of the first flow path 61 by screwing the male screw portion 72 and the female screw portion 613c, and the piece valve 71 is seated on or removed from the valve seat 613b. The first flow path 61 is opened and closed.

The spindle 73 is formed in a substantially cylindrical shape. A groove 73 a is formed on the downstream end surface of the spindle 73. For example, a flathead screwdriver or the like is fitted in the groove 73a and rotated around the axis X in this state, whereby the water stopper member 7 is connected to the first flow path 61 via the screwing of the male screw portion 72 and the female screw portion 613c. Advancing and retreating in the X direction.
An O-ring 73 b is attached to the outer periphery on the downstream side of the spindle 73. Thereby, the sealing property of the spindle 73 and the cap 9 described later is ensured.

  The strainer 8 is inserted in the axis X direction from the downstream side (downstream end) of the first flow path 61 along the inner peripheral surface of the first flow path 61, and is detachably attached to the first flow path 61. The strainer 8 includes a strainer main body 81, a connecting portion 82, and a dust catch ring 83. The strainer 8 is formed in a cylindrical shape, and the flowing water flowing in from the upstream side of the first flow path 61 is passed from the inside to the outside (mesh 813 described later) and guided to the second flow path 62, thereby Remove foreign material.

  The strainer body 81 is formed in a substantially cylindrical shape. The strainer main body 81 includes a small diameter portion 811, a large diameter portion 812, and a mesh 813.

  The small diameter portion 811 constitutes the distal end side of the strainer 8 in the insertion direction, that is, the upstream side of the strainer body 81, and is formed in a substantially annular shape. The small diameter portion 811 has a smaller diameter than a large diameter portion 812 described later. A dust catch ring 83 described later is detachably attached to the inner periphery of the small diameter portion 811. In addition, an annular O-ring 81 a is attached to the outer periphery of the small diameter portion 811, thereby ensuring the sealing performance between the first flow path 61 and the strainer 8.

  The large diameter portion 812 constitutes the proximal end side in the insertion direction of the strainer 8, that is, the downstream side of the strainer body 81, and has a larger diameter than the small diameter portion 811 described above. More specifically, the large diameter portion 812 has a larger diameter than the outer diameter of the O-ring 81a attached to the outer periphery of the small diameter portion 811. The large diameter portion 812 has a rib 812a and an annular portion 812b.

Four ribs 812a are provided at substantially equal intervals in the circumferential direction. These ribs 812a extend in the direction of the axis X of the strainer 8, that is, the insertion direction of the strainer 8, and connect the above-described small diameter portion 811 and the annular portion 812b described later.
The annular portion 812b constitutes a large-diameter portion 812 together with the rib 812a, and has a larger diameter than the small-diameter portion 811 described above.

  Note that the inner diameter of the small diameter portion 811 and the inner diameter of the large diameter portion 812 are substantially the same. That is, the inner peripheral surface of the small diameter portion 811 and the inner peripheral surfaces of the rib 812a and the annular portion 812b of the large diameter portion 812 are formed to be connected to each other. Therefore, the rib 812a of the large diameter part 812 is thicker than before, and the strength of the strainer 8 is improved.

  Further, as shown in FIG. 5 and the like, a tapered portion 814 having a diameter increasing toward the downstream side is formed at the boundary between the small diameter portion 811 and the large diameter portion 812 of the strainer 8. As described above, the inner peripheral shape of the downstream flow path 612 constituting the first flow path 61 is a shape along the outer peripheral shape of the strainer 8. That is, the strainer 8 has an outer diameter along the inner diameter of the downstream flow path 612 of the first flow path 61. Therefore, a tapered portion 612d having the same inclination angle as that of the tapered portion 814 is formed at the boundary between the small-diameter channel 612a and the large-diameter channel 612b constituting the downstream channel 612. Thereby, when the strainer 8 is inserted, the small diameter portion 811 is easily guided on the upstream side.

  A predetermined gap is secured in the axis X direction between the tapered portion 814 of the strainer 8 and the tapered portion 612d of the downstream flow path 612. As a result, when the dust catch ring 83 is detached in the downstream channel 612 when the strainer 8 is removed as will be described later, the strainer 8 can be further pushed upstream, and the dust catch ring 83 is The strainer 8 can be fitted and taken out at the tip.

  As shown in FIG. 3, the mesh 813 is provided so as to cover the inner periphery of the four ribs 812a described above. The mesh 813 functions as a filter medium. The mesh 813 is made of resin or metal.

  The connecting portion 82 is formed in a substantially cylindrical shape, and has an outer diameter smaller than that of the strainer body 81 described above. The connecting portion 82 has an outer diameter that is substantially the same as the inner diameter of a male screw portion 9a of the cap 9 described later, and the cap 9 is attached and fixed to the strainer 8 by being fitted to the inner periphery of the male screw portion 9a. An annular O-ring 82 a is attached to the outer periphery of the connecting portion 82, so that the tightness between the strainer 8 and the cap 9 is ensured.

  The dust catch ring 83 is detachably attached to the inner periphery of the tip of the small diameter portion 811 constituting the strainer body 81. The dust catch ring 83 is formed by an annular member in which an annular groove 83a that opens to the downstream side is formed. By the dust catch ring 83, dust that peels off from the mesh 813 or the like of the strainer 8 is received by the groove 83 a, so that the entry of dust into the water blocking hole 613 or the like in the first flow path 61 is suppressed.

  The cap 9 is formed in a substantially cylindrical shape. A male screw portion 9 a is formed on the outer periphery on the upstream side of the cap 9. The male threaded portion 9a is screwed into the female threaded portion 612c of the downstream channel 612 described above. The connecting portion 82 of the strainer 8 is fitted to the inner periphery of the male screw portion 9a via an O-ring 82a.

  A groove 9b and a circular hole 9c are formed on the downstream end surface of the cap 9. For example, a minus driver or the like is fitted in the groove 9b and rotated around the axis X in this state, whereby the strainer 8 in the direction of the axis X of the first flow path 61 is engaged through the screwing of the male screw 9a and the female screw 612c. And the strainer 8 is attached and fixed in the first flow path 61. Further, the above-mentioned stop cock member 7 is inserted into the circular hole 9c, and the opening and closing of the first flow path 61 by the stop cock member 7 is performed by inserting a minus driver or the like through this circular hole 9c.

Operation | movement of the water stop cock device 50 provided with the above structure is demonstrated.
First, as shown in FIG. 5, the stop cock device 50 is normally in an open state, and the first flow path 61 and the second flow path 62 are in a water flow state. At this time, the stop cock member 7 is retracted downstream, and the piece valve 71 is disengaged from the valve seat 613b. Therefore, the flowing water supplied from the water supply source pipe into the upstream flow path 611 passes through the water blocking hole 613, and a pair of notches 612f formed in the upstream bottom surface part 612e of the downstream flow path 612. (See FIG. 7) and flows into the downstream flow path 612.

  Next, the flowing water that has flowed into the downstream flow path 612 flows into the inside of the strainer 8, flows between the water stop cock member 7 and the mesh 813, and passes through the mesh 813 provided on the outer peripheral side. At this time, foreign matter in running water is removed by the mesh 813.

  Next, the flowing water that has passed through the mesh 813 flows toward the second flow path 62 that is orthogonal to the first flow path 61 (downstream flow path 612). As a result, the water supply pipe 41 connected to the second flow path 62 enters the water supply state, and the running water is supplied to the toilet device 100.

  On the other hand, as shown in FIG. 6, the stop cock device 50 is closed at the time of maintenance to remove the foreign matter accumulated in the mesh 813 periodically, and the first flow path 61 and the second flow path 62 are The water is stopped. At this time, the stop cock member 7 is adjusted to the position advanced to the upstream side by the operator, and the piece valve 71 is seated on the valve seat 613b. Therefore, the running water supplied from the water supply source pipe into the upstream flow path 611 cannot pass through the water blocking hole 613. Thereby, the 1st flow path 61 and the 2nd flow path 62 will be in a water stop state.

Next, the procedure of attaching the strainer 8 to the water stop cock device 50 will be described, and the effects of the present embodiment will be described together.
FIG. 8 is a perspective view showing a state in which the strainer 8 is attached to the water faucet device 50 according to the present embodiment. As shown in FIG. 8, the strainer 8 has the cap 9 attached to its downstream end and the dust catch ring 83 attached to its upstream end after removing foreign matter during maintenance, It is inserted into the downstream channel 612 in the axis X direction from the downstream side (downstream end). At this time, the stop cock member 7 is already attached to the first flow path 61, and the stop cock apparatus 50 is in a water stop state in which the piece valve 71 is seated on the valve seat 613b.

Here, as described above, in the present embodiment, the strainer 8 constituting the filter structure 5 has the small-diameter portion 811 formed on the distal end side (upstream side) in the insertion direction and the proximal end side (downstream side) in the insertion direction. And a large-diameter portion 812 having an outer diameter larger than that of the small-diameter portion 811.
Accordingly, by providing the large-diameter portion 812, the gap between the first flow path 61 (downstream flow path 612) and the inner peripheral surface can be reduced, so that the large-diameter portion 812 exhibits a guide function. The strainer 8 is prevented from tilting. As apparent from FIG. 6, when the strainer 8 is inserted into the downstream flow path 612 in the axis X direction from the downstream side (downstream end) of the first flow path 61, The large diameter portion 812 moves along the inner peripheral surface of the downstream flow path 612. At this time, the inner peripheral shape of the downstream channel 612 is a shape along the outer periphery of the strainer 8, and is between the inner peripheral surface of the downstream channel 612 and the outer peripheral surface of the large-diameter portion 812 of the strainer 8. Only a slight gap is formed in the. Therefore, since the large diameter part 812 of the strainer 8 exhibits the function of a guide more reliably, it can suppress more reliably that the strainer 8 inclines at the time of insertion. Therefore, according to the present embodiment, the strainer 8 can be easily attached, and the assemblability is improved. The same applies to the removal, and the strainer 8 can be prevented from being tilted. Therefore, the strainer 8 can be easily removed, and the assemblability is improved.

Further, in the present embodiment, the downstream flow path 612 of the first flow path 61 to which the strainer 8 is detachably attached is provided on the downstream side of the small diameter flow path 612a and the small diameter flow path 612a. And a large-diameter channel 612b having an inner diameter larger than that of the small-diameter channel 612a. The large diameter portion 812 of the strainer 8 is configured to have an outer diameter that is larger than the inner diameter of the small diameter channel 612a and smaller than the inner diameter of the large diameter channel 612b.
Thereby, only a slight gap is formed between the inner peripheral surface of the downstream flow path 612 (large diameter flow path 612b) and the outer peripheral surface of the large diameter portion 812 of the strainer 8, and a large gap is formed. Since it can avoid, the large diameter part 812 of the strainer 8 can exhibit the function of a guide, and it can suppress that the strainer 8 inclines at the time of insertion.

  Moreover, in this embodiment, the large diameter part 812 of the strainer 8 was comprised including the some rib 812a extended in an insertion direction (axis X direction). Thereby, the guide function of the large diameter part 812 of the strainer 8 mentioned above is more reliably exhibited, and the above-mentioned effect is more reliably exhibited.

Further, conventionally, when an elastic member such as an O-ring is attached to the outer periphery of the strainer at the tip end side, the strainer is inclined at the time of attachment / detachment, so that the elastic member comes into contact with a corner or the like in the flow path and is damaged. However, there was a risk of water leakage.
On the other hand, in this embodiment, although the O-ring 81a as an annular elastic member is attached to the outer periphery of the small-diameter portion 811 of the strainer 8, it is possible to suppress the strainer 8 from being inclined when the strainer 8 is attached and detached as described above. The O-ring 81a can be prevented from coming into contact with the corners in the first flow path 61 and being damaged, and the risk of water leakage can be suppressed.

Also, conventionally, when the strainer is removed, the strainer tilts and the tip of the strainer comes into contact with the outer peripheral surface of the spindle arranged inside the strainer, so that the dust catch ring attached to the strainer tip is released and flows. Sometimes it fell into the street and left behind.
On the other hand, in this embodiment, although the water stop cock member 7 is provided extending from the upstream side to the inside of the strainer 8 relative to the strainer 8, the above-described problems can be suppressed. That is, in the present embodiment, the dust catch ring 83 as an annular member in which an annular groove 83a that opens to the downstream side is formed on the inner peripheral surface of the tip of the small diameter portion 811 is detachably attached. As described above, when the strainer 8 is removed, the strainer 8 can be prevented from tilting, so that the tip of the strainer 8 can be prevented from coming into contact with the stopcock member 7, and the dust catch ring is detached and left in the flow path. Can be suppressed.

  It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.

  In the said embodiment, although the filter structure 5 of this invention was applied to the water tap apparatus 50, it is not limited to this. The present invention is not limited to the stop cock device, and is applied to, for example, a flow path switching valve. In particular, when a rectifying plate or the like is attached to the inside of the strainer 8, the effect of suppressing the fall of the dust catch ring 83 is exhibited.

  In the said embodiment, although the 1st flow path 61 and the 2nd flow path 62 were set as the structure orthogonal to each other, it is not limited to this. What is necessary is just to mutually cross these flow paths.

DESCRIPTION OF SYMBOLS 5 ... Filter structure 6 ... Main-body part 7 ... Stop cock member 8 ... Strainer 50 ... Stop cock device 61 ... 1st flow path 62 ... 2nd flow path 81a ... O-ring (elastic member)
83 ... Dust catch ring (annular member)
83a ... Groove (groove)
612 ... downstream flow path 612a ... small diameter flow path 612b ... large diameter flow path 811 ... small diameter section 812 ... large diameter section 812a ... rib

Claims (3)

A filter structure for removing foreign matter in running water,
A main body having therein a first flow path extending substantially linearly and a second flow path communicating with the downstream side of the first flow path and extending in a direction intersecting the first flow path;
Inserted from the downstream side of the first flow path in the central axis direction of the first flow path and detachably attached to the first flow path, and flowing water flowing from the upstream side of the first flow path from the inside to the outside A cylindrical strainer that removes foreign matter in running water by passing it through to the second flow path,
The strainer possess said insertion direction of the distal end side small diameter portion provided on, and a large diameter portion having a larger outer diameter than the insertion direction is provided on the proximal side the small-diameter portion,
The first flow path has a downstream flow path that is provided on the downstream side and to which the strainer is detachably attached,
The downstream channel has a small-diameter channel provided on the upstream side thereof, and a large-diameter channel provided on the downstream side of the small-diameter channel and having a larger inner diameter than the small-diameter channel,
The large-diameter portion has an outer diameter that is larger than the inner diameter of the small-diameter channel and smaller than the inner diameter of the large-diameter channel,
The filter structure in which the small-diameter portion has an annular elastic member attached to the outer periphery thereof, and the large-diameter portion has a larger diameter than the outer diameter of the elastic member attached to the outer periphery of the small-diameter portion .   The filter structure according to claim 1, wherein the large diameter portion includes a plurality of ribs extending in the insertion direction. The filter structure according to claim 1 or 2 ,
A stopcock member that extends from the upstream side to the inside of the strainer than the strainer and opens and closes the first flow path;
A water faucet device comprising: an annular member that is detachably attached to the inner periphery of the tip of the small-diameter portion and has an annular groove that opens downstream.

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