JP2002282616A - Filter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter device wherein water leak during laundering can be prevented by detecting the state in which the cap is fitted. SOLUTION: A cover 101 that opens or closes the opening in front of a cap 35, a protruding holding part 35b extending radially through the center of a nearly circular surface on the side of the cover 101 of the cap 35, and a rib 102 protruding beyond the surface on the side of the cap 35 of the cover 101 so as to be opposite to the part 35b are provided. Accordingly, only when the central angle θ of the holding part 35b is approximately 90 deg., the cover 101 can be closed without the abutment of the part 35b against a protrusion 104.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter device for capturing foreign matter such as lint contained in waste water from a washing machine or the like.

[0002]

2. Description of the Related Art FIG. 17 is a sectional view showing a drum type washing machine having a conventional filter device. In the drum type washing machine, the outer box 1 is arranged on a bottom 41, and the upper surface of the outer box 1 is covered with a top plate 40. The outer box 1 is formed by sheet metal processing a decorative steel plate. The top plate 40 is formed of a compression board or the like, and is screwed to the outer case 1. The front side of the outer box 1 can be opened and closed by an opening and closing door 3. An operation panel 11 having operation keys is provided on an upper part of the front surface of the outer box 1.

[0003] A bottomed cylindrical water tank 4 having an opening 4a on the front side is provided in the outer box 1, and a bottomed cylindrical drum 5 is arranged in the water tank 4. The drive mechanism 9 is integrated with the water tank 4. The shaft 5e fixed to the drum 5 is rotatably supported by a bearing 6 of a driving mechanism 9, and the driving mechanism 9 can rotate the drum 5.

A small hole 5a is provided in the peripheral wall of the drum 5. The small holes 5a allow washing water to flow between the water tub 4 and the drum 5 during washing. A baffle 5b is provided on the inner wall surface of the drum 5 so as to protrude therefrom. The rotation of the drum 5 causes the laundry to be hooked up, lifted, and dropped into the washing water to perform washing.

A packing 10 made of an elastic material such as rubber or soft resin forms a passage for taking in and out the laundry at a periphery of a laundry loading port 1a provided on the front surface of the outer box 1 and an opening 4a of the water tub 4. Attached to. The opening / closing door 3 has a window 3 made of a transparent member so that the inside of the drum 5 can be viewed.
a is projected.

The packing 10 has a structure in which the inner peripheral edge 10a is in close contact with the peripheral edge of the window 3a to close the passage when the door 3 is closed. Thereby, waterproofing during the washing operation is performed. In addition, a bellows or the like is provided on the packing 10,
In accordance with the swing of the water tank 4, the water tank 4 is bent and follows.

A water supply pipe 12 communicating with a water pipe is provided in an upper portion of the outer box 1. When the water supply valve 13 provided in the middle of the water supply pipe 12 is opened, water is supplied into the water tank 4 from the water supply nozzle 15 attached to the door packing 10 via the detergent case 14.

Drain duct 1 led out from the lower part of water tank 4
A filter device 17 for filtering washing water is connected to 6a, and is connected to a drain pump 18 via a drain duct 16b. The drainage pump 18 is connected to a drainage pipe 33 erected outside the outer box 1. By driving the motor 18c, the impeller 18b arranged in the pump chamber 18a is rotated to pump up the washing water flowing from the water tub 4 and drain it to the outside.

Since the drain pump 18 cannot stop the water, the drain pipe 33 is provided upright above the level of the washing water supplied to the water tub 4. This prevents water leakage,
It can drain to the outside.

An air trap 22 is provided in the drain duct 16a.
, A water level sensor 23 is provided via a pressure guiding pipe 21. The water level sensor 23 moves the magnetic body in the coil according to the pressure change in the air trap 22. The resulting change in inductance of the coil is detected as a change in oscillation frequency, and the water level in the water tank 4 is detected.

The filter device 17 is as shown in the perspective view and the sectional view of FIGS. FIG.
Is a sectional view of the filter case 34. FIG. An enlarged diameter portion 47 having a stepped portion 34d and having an enlarged diameter is provided at the front portion of the cylindrical filter case 34. A screw portion 37 is formed in the enlarged diameter portion 47, and a cap 35 is fastened by the screw portion 37 to close the front surface of the filter case 34.

A filter body 36 is integrated with the cap 35 by engaging engagement portions 35a, 36a with a compression spring 45 interposed therebetween. The cap 35 is detached by rotating the cap 35 by holding the handle 35b, and the filter body 36 can be taken out from the filter case 34.

The filter body 36 is configured as shown in FIG. A front part 43 for closing the front part is integrated with the cylindrical filter part 51. Filter unit 51
Is formed of a resin molded product, and is formed in a net shape so as to have an opening 51a. 52 is a rib for securing the strength of the filter unit 51. Further, the filter portion 51 may be formed by attaching fine fibers to the peripheral surface of the rib 52.

Behind the filter 51, an opening 51 is provided.
a is formed, a cylindrical portion 53 whose peripheral surface is closed is formed, and a flange portion 54 having an opening 54a (see FIG. 19) and projecting in the radial direction is formed on an end surface of the cylindrical portion 53. Is formed. A packing 42 made of an elastic material such as rubber is fixed to the front surface 43.

In FIG. 19, an inlet 38 through which washing water flows is provided on the peripheral surface of the filter case 34, and an outlet 39 through which washing water flows is provided at the rear. The inside diameter of the inflow port 38 is smaller than the inside diameter of the filter case 34. Thus, impurities that can pass through the inflow port 38 can flow into the filter case 34 without closing the entrance to the filter case 34. The flange portion 54 of the filter case 34 is disposed facing the outlet 39, and the opening 54a and the outlet 39 are substantially concentric.

When the cap 35 is fastened to the filter case 34, the packing 42 is pressed against the inner wall surface of the step portion 34d via the compression spring 45 and the front surface 43 of the filter body 36. Thereby, the filter case 34 is sealed, and water leakage from the filter case 34 is prevented.

An annular projection 47b is formed on the inner wall surface of the step 34d so as to project in the axial direction. This allows
Since the packing 42 is locally pressed, the water leakage prevention performance can be further improved.

At the same time, the compression spring 45 and the packing 4
The flange portion 54 of the filter body 36 is pressed around the outlet 39 by the elastic force of 2. Thereby, the collar 54
And the rear end face 34a of the filter case 34 are in close contact with each other so that impurities cannot flow out between them.

When the drain pump 18 is driven, the inlet 3
In the washing water flowing from 8 into the filter device 17, impurities such as lint are filtered by the filter unit 51. Then, the washing water flows out of the outlet 39 and the drain pump 1
8 (see FIG. 17). Thereafter, the washing water from which contaminants have been removed is drained from the rear of the washing machine via a drain pipe 33.

At this time, since the peripheral surface of the cylindrical portion 53 is closed, the washing water flowing out of the filter body 36 is rectified into a cylindrical shape, and the drainage efficiency of the drainage pump 18 is improved. . Further, since the air remaining in the filter case 34 is exhausted from the ventilation hole 44, the drain pump 18
Of the air can be prevented. The ventilation port 44 is provided on the upper part of the filter case 34, and is fixed in communication with the atmosphere by a hollow tube (not shown) made of a vinyl tube or the like.

According to this, since the flange 54 of the filter body 36 is in close contact with the periphery of the outlet 39 of the washing water, the washing water containing impurities does not flow out of the outlet 39 and the filter 51 Only the washing water filtered by the outlet flows out from the outlet 39. Therefore, failure of the drain pump 18 can be prevented.

The flange 54 is formed to have substantially the same diameter as the inner diameter of the filter case 34. For this reason, the cap 35
Is removed, and the filter body 36 is pulled out in the axial direction, so that the flange 54 slides on the inner peripheral wall 34b of the filter case 34, and the attached matter attached to the inner peripheral wall 34b can be removed. This makes it possible to easily clean the inside of the filter case 34, and to easily prevent the filter device 17 from being clogged by a substance attached to the inner peripheral wall 34b.

At this time, the extraneous matter removed from the inner peripheral wall 34b of the filter case 34 and the foreign matter removed by the filter body 36 are scraped out together with the washing water remaining in the filter case 34 by the flange 54. A guide portion 47c having a further enlarged diameter is formed below the enlarged diameter portion 47, and the scraped-out washing water and the like are guided to a narrow range by the guide portion 47c and stored in a tray T which is installed in advance. Thereby, when the cap 35 is opened, it is possible to prevent the washing water or the like from being scattered and soiling the floor surface or the like. Reference numerals 34e and 34f denote a plurality of ribs protruding in the filter case 34 in the axial direction, and hold the filter body 36 coaxially with the filter case 34.

In FIG. 18, a stopper 34 projecting forward in the axial direction is provided on an end face on the front surface of the filter case 34.
c, 34d are formed. The cap 35 is formed with a protrusion 35c protruding rearward in the axial direction. The stopper 34d is formed to be slightly lower than the stopper 34c, and when the cap 35 is tightened, the projection 35c rides over the stopper 34d and comes into contact with the stopper 34c so that the cap 35 is locked.

This allows the cap 35 to reach a certain position.
Can be prevented, damage to the packing 42 due to excessive tightening can be prevented, and water leakage due to insufficient tightening can be prevented. In addition, the loosening of the cap 35 due to the vibration of the washing machine or the like is stopped by the projection 35c abutting on the stopper 34d, so that water leakage can be prevented.

[0026]

However, in the structure of the conventional drum type washing machine, even if the cap 35 is not screwed sufficiently, the cap 35 is apparently removed.
Since it can be considered that the washing machine is properly mounted, there is a risk that the washing machine may be inadvertently started. In this case, since the packing 42 does not adhere, the cap 3
5 causes water leakage to the outside of the washing machine.

Such an unexpected situation is likely to occur, for example, when the person wearing the cap 35 is different from the user of the washing machine. However, in the conventional configuration, there is no means for detecting an improper mounting state of the cap 35, and thus there is no way to prevent water leakage due to the carelessness of the user.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a filter device that can prevent water leakage at the time of washing by detecting an attached state of a cap. .

[0029]

In order to achieve the above object, a filter device according to the present invention comprises a cylindrical body having an inlet through which a fluid flows, and a detachable cap is provided in front of the cylindrical body. A filter case in which a cap mounting opening to be mounted is formed and an outlet through which the fluid flows out on a rear end face is formed, and the filter case is detachably disposed inside the filter case from the cap mounting opening. A filter body provided with a filter section for filtering impurities in the fluid, and a detecting means for detecting whether or not the cap is properly mounted on the cap mounting opening is provided. Features.

In this case, the detection means may have a simple structure if it has a mechanism for inhibiting closing of a lid for opening and closing the front opening of the cap when the cap is improperly mounted.

Specifically, the detecting means comprises: the cap which is screwed into the cap mounting opening;
A lid that opens and closes the front opening of the cap, a grip that projects from the lid side of the cap, and a rib that projects from the cap-side surface of the lid so as to face the grip. And it can consist of. According to this, only when the grip is in the predetermined position, the lid is closed without the grip and the protrusion coming into contact with each other.

In this case, when the lid is closed, the rib is moved in a direction in which the flow of water flowing down the lid is not obstructed at a position where the cap is prevented from being loosened or in an open state of the lid. Should be provided.

[0033] The detecting means may include:
The cap which is screwed into the cap mounting opening, a lid which opens and closes a front opening of the cap, a concave portion formed in a peripheral portion of the cap, and a cap side of the lid; And a locking hole that is at least partially closed by the peripheral portion of the cap and that is inserted and locked by the hook. According to this, when the mounting state of the cap is appropriate, the concave portion and the locking hole match to open the locking hole,
The lid will be closed.

[0034] The detecting means may include:
The cap which is screwed into the cap mounting opening, a lid which opens and closes a front opening of the cap, a concave portion formed in a peripheral portion of the cap, and a cap side of the lid; And a convex portion protruding from the surface of the second member and fitting with the concave portion. According to this, when the cap is properly mounted, the lid is closed by fitting the concave portion and the convex portion.

Further, the detecting means is formed on the cap to be screwed into the cap mounting opening, a lid for opening and closing the front opening of the cap, and a peripheral portion of the cap. A projection, a hook protruding from the cap-side surface of the lid, a locking hole through which the hook is inserted and locked, and a rotatably mounted near the locking hole. A movable element biased in a direction to close at least a part of the locking hole.
According to this, when the mounting state of the cap is proper, the protrusion pushes the moving element to open the locking hole, whereby the lid is closed.

Further, the detecting means is formed on the cap screwed into the cap mounting opening, a lid for opening and closing a front opening of the cap, and a peripheral portion of the cap. A concave portion, a magnet body provided on the cap-side surface of the lid, and a metal piece that is at least partially covered by a peripheral portion of the cap and that is attracted to the magnet body. can do. According to this, when the mounting state of the cap is appropriate, the recess is aligned with the metal piece to expose the metal piece, whereby the lid is closed.

Further, a stopper for restricting the rotation of the cap is provided, and when the cap is properly mounted, the stopper acts so as to restrict the rotation of the cap. Since rotation is prevented, the cap can be securely attached and the lid can be closed.

If the rotation of the cap at the time of screwing is within one rotation, the cap can be easily mounted in the cap mounting opening of the filter case.

Then, with the opening and closing of the lid, ON / O
The provision of the FF lid open / close detection switch prevents malfunctions of equipment (eg, a drum-type drying washing machine) including the filter device.

Further, when a cap mounting detection switch which is turned on / off depending on whether or not the cap mounting state is appropriate is provided, a device equipped with a filter device (for example,
Malfunction of the drum type washing machine) is prevented.

[0041]

DESCRIPTION OF THE PREFERRED EMBODIMENTS <First Embodiment> A first embodiment of the present invention
An embodiment will be described with reference to the drawings. For convenience of explanation, the same parts as those in FIGS. 17 to 21 of the conventional example are denoted by the same reference numerals. FIG. 1 is an external perspective view of a drum type washing machine provided with a filter device according to the present invention.
In FIG. 1, reference numeral 1 denotes a main body of the drum-type washing machine, and 101 denotes a lid which opens and closes an opening formed at a lower right side of the front surface of the main body 1.

FIG. 2 is a perspective view around the lid 101.
The state where the lid 101 is opened is shown. The lid 101 is pivotally supported at the lower end so that the upper end can be opened and closed about the lower end. On the back surface of the lid 101, a single rib 102 extending obliquely and a hook 103 whose tip is processed into a hook shape are protrudingly provided.

As shown by the dashed arrows in FIG. 2, the ribs 102 are arranged so as to have a gentle inclination with respect to the flowing direction of the water. For this reason, when the lid 101 is opened and the cap 35 is removed, the water flowing down the back surface of the lid 101 is promptly moved to the tray T without being obstructed.
(See FIG. 17).

FIG. 3 is a sectional view of the filter device 17. On the lid 101 side of the cap 35, there is a recessed portion 351 that is recessed in a cup shape, and a grip portion 35b protrudes diametrically extending through the center of the recessed substantially circular surface. Further, at a portion of the main body 1 corresponding to the hook 103 of the lid 101, a locking hole 104 into which the hook 103 is inserted and locked is provided.

Hereinafter, the cap 35 is screwed into the screw portion 37 of the enlarged diameter portion (cap mounting opening) 47, and the grip portion 35b
When the center angle θ (see FIG. 4) becomes substantially 90 °, the protrusion 35c (see FIG. 18) is moved to the stoppers 34c and 34d.
(See FIG. 18) The description will be made assuming that the cap 35 is locked between the filter case 34 and the filter case 34 via the packing 42.

FIG. 4 is a front view around the lid 101.
This shows a state in which the lid 101 is closed. When the lid 101 is closed in the direction of F in FIG. 2 when the central angle θ of the grip 35b is at a position of approximately 90 °, the rib 102 and the grip are closed as shown by broken lines in FIGS. The lid 101 can be completely closed without the 35b abutting. At the same time, the hook-like portion of the hook 103 is locked in the locking hole 104, so that the lid 101 is locked so as not to be easily opened.

At this time, the projection 35c and the stopper 34
The rotation of the cap 35 in the clockwise direction is prevented by the contact with d, and further tightening of the cap 35 is prevented, and the rotation of the cap 35 in the counterclockwise direction is prevented by the contact between the grip 35b and the rib 102. As a result, the cap 35 is prevented from loosening.

On the other hand, when the central angle θ of the grip 35b is 9
When it is at a position other than 0 °, even if the lid 101 is closed,
The rib 102 comes into contact with the grip 35b, and the lid 10
1 cannot be closed. Therefore, the cap 35
Since it is easily detected that the mounting of the cap 35 is insufficient, the user rotates the grip 35 so that the cap 35 is properly positioned.
Is set and then the lid 101 is closed, whereby water leakage from the filter device 17 during washing can be prevented beforehand.

FIG. 5 is a sectional view of a filter device 17 showing another example of the present embodiment. The same members as those in FIG. 3 are denoted by the same reference numerals. A characteristic feature of this embodiment is that a lid opening / closing detection switch 107 is provided which is turned on when the contact 107a is pressed by the tip of the hook 103 when the lid 101 is closed.

According to this, for example, if the lid opening / closing detection switch 107 is not turned on, this fact is notified, the operation of the washing machine cannot be started, or during operation, the lid 101 is opened and the lid is opened. Open / close detection switch 107 is OFF
In such a case, control can be performed such that the operation of the washing machine is temporarily stopped in an emergency, so that safety is improved and water leakage can be more reliably prevented. In this case, the same effect can be obtained without the rib 102.

FIG. 6 is a sectional view of a filter device 17 showing still another example of the present embodiment. The same members as those in FIG. 3 are denoted by the same reference numerals. The characteristic point of this embodiment is that a magnetic piece 109 made of a magnetic material is provided in contact with one portion of the peripheral portion of the cap 35 and one portion of the outer peripheral surface of the expansion portion 47 of the filter case 34. The reed switch 108 is provided, and the cap 35 is properly mounted (the central angle θ of the grip 35b (see FIG. 4) is approximately 90).
°), the magnetic piece 109 and the reed switch 108 face each other so that the reed switch 108 is turned on.

According to this, for example, the reed switch 1
If 08 is not turned on, control can be performed such that the operation of the washing machine cannot be started, so that safety is improved and water leakage during washing can be reliably prevented. In this case, the same effect can be obtained without the rib 102.

<Second Embodiment> A second embodiment of the present invention will be described with reference to the drawings. FIG. 7 is a partial cross-sectional view of the periphery of the lid 101 of the filter device 17 according to the present embodiment, and FIG. The same members as those in the first embodiment of FIGS. 1 to 4 are denoted by the same reference numerals.

As shown in FIG. 7, a characteristic feature of the present embodiment is that the convex portion 11 is formed on the hook 103 on the rear surface of the lid 101.
0 and the cap 35 as shown in FIG.
Is provided with a concave portion 35f in which the convex portion 110 is engaged. Note that, here, the concave portion 35f is
It is assumed that the projection 110 is located on an extension of the line b, and the projection 110 is located at a position where the projection 35 is engaged with the recess 35f when the cap 35 is mounted at an appropriate position.

In this configuration, the cap 35 is
As shown in (a), rotate clockwise and screw in.
The rotation of the cap 35 is restricted by the stoppers 34c and 34d (see FIG. 18), and as shown in FIG. 8B, the cap 35 is positioned at a position where the center angle θ (see FIG. 4) of the grip 35b is substantially 90 °. The rotation is stopped. At this time, the recess 3
5f is located at the upper end of the cap 35, so that the lid 1
01 is closed in the direction of F in FIG.
5f.

According to this, when the lid 101 is closed, the contact between the rib 102 and the grip 35b is avoided, the protrusion 110 is fitted into the recess 35f, and the hook 103 is locked.
By locking to the cover 4, the lid 101 can be reliably closed only when the cap 35 is in an appropriate mounted state, and the cap 35 after the lid 101 is closed is prevented from being loosened. Therefore, water leakage during washing can be prevented. In this case, the same effect can be obtained without the rib 102.

<Third Embodiment> A third embodiment of the present invention will be described with reference to the drawings. FIG. 9 is a partial cross-sectional view of the periphery of the lid 101 of the filter device 17 according to the present embodiment, and FIG. The same members as those in the first embodiment of FIGS. 1 to 4 are denoted by the same reference numerals.

As shown in FIGS. 9 and 10, a characteristic feature of the present embodiment is that a concave portion 35f similar to the above is provided in the peripheral portion of the cap 35 and a part of the That is, a locking hole 104 is provided. Here, the concave portion 35f is on an extension of the grip portion 35b, and the convex portion 101 is at a position where the concave portion 35f is engaged with the concave portion 35f when the cap 35 is mounted at an appropriate position. .

In this configuration, the cap 35 is
As shown in (a), rotate clockwise and screw in.
The rotation of the cap 35 is restricted by the stoppers 34c and 34d (see FIG. 18). As shown in FIG. 10B, the cap 35 is positioned at a position where the center angle θ (see FIG. 4) of the grip 35b is substantially 90 °. The rotation is stopped. At this time, since the concave portion 35f is located at the upper end of the cap 35, the concave portion 35f is aligned with the locking hole 104, and the locking hole 104 is fully opened.

According to this, when the lid 101 is closed, the contact between the rib 102 and the grip portion 35b is avoided, and the hook 103 is locked in the locking hole 104, so that the cap 35 is properly fitted. Only when in the mounted state, the lid 101 can be securely closed. Therefore,
Water leakage during washing can be prevented beforehand. In this case, rib 1
The same effect can be obtained without 02.

<Fourth Embodiment> A fourth embodiment of the present invention will be described with reference to the drawings. FIG. 11 is a partial cross-sectional view of the periphery of the lid 101 of the filter device 17 according to the present embodiment, and FIG. The same members as those in the first embodiment of FIGS. 1 to 4 are denoted by the same reference numerals.

As shown in FIGS. 11 and 12, the present embodiment is characterized in that a projection 35 g projecting radially from the peripheral edge of the cap 35 is provided, and the projection 35 g above the locking hole 104 of the main body 1. Is provided with a movable element 105 which is rotatably attached by a rotating shaft 106 and is urged in a direction to close a part of the locking hole 104 by a spring 111.
Here, the projection 35g is on an extension of the grip 35b, and the locking hole 104 is at a position opened by the projection 35g when the cap 35 is mounted at an appropriate position. Shall be.

In this configuration, the cap 35 is
As shown in (a), rotate clockwise and screw in.
The rotation of the cap 35 is restricted by the stoppers 34c and 34d (see FIG. 18), and as shown in FIG. 12B, the cap 35 is positioned at a position where the central angle θ (see FIG. 4) of the grip 35b is substantially 90 °. The rotation is stopped. At this time, when the projection 35g pushes the moving element 105, the moving element 105 rotates counterclockwise against the bias of the spring 111, and the locking hole 104 is fully opened.

According to this, when closing the lid 101, the contact between the rib 102 and the grip 35 b is avoided, and the hook 103 is locked in the locking hole 104, so that the cap 35 is properly fitted. Only when in the mounted state, the lid 101 can be securely closed. Therefore,
Water leakage during washing can be prevented beforehand. In this case, rib 1
The same effect can be obtained without 02.

<Fifth Embodiment> A fifth embodiment of the present invention will be described with reference to the drawings. FIG. 13 is a partial cross-sectional view of the vicinity of the lid 101 of the filter device 17 according to the present embodiment, and FIG. 14 is a front view as viewed in the direction of arrow C in FIG. The same members as those in the first embodiment of FIGS. 1 to 4 are denoted by the same reference numerals.

As shown in FIGS. 13 and 14, the characteristic configuration of this embodiment is that a concave portion 35
e, and a hook 103 on the back of the lid 101.
A magnet body 201 is provided in place of the magnet body 201 (see FIG. 3), and a locking hole 104 (FIG.
In other words, a metal piece 202 that is partially covered by the periphery of the cap 35 is provided in place of the metal piece 202. Here, it is assumed that the concave portion 35e is on an extension of the grip portion 35b, and the metal piece 202 is at a position exposed by the concave portion 35e when the cap 35 is mounted at an appropriate position. .

In this configuration, the cap 35 is
As shown in (a), rotate clockwise and screw in.
The rotation of the cap 35 is restricted by the stoppers 34c and 34d (see FIG. 18), and as shown in FIG. 14B, the cap 35 is positioned at a position where the center angle θ (see FIG. 4) of the grip 35b is substantially 90 °. The rotation is stopped. At this time, since the concave portion 35e is located at the upper end of the cap 35, the concave portion 35e and the metal piece 202 match, and the metal piece 202 is entirely exposed.

According to this, when closing the lid 101, the contact between the rib 102 and the grip 35 b is avoided, and the magnet 35 is attracted to the metal piece 202 so that the cap 35 can be properly mounted. Only when it is in the state, the lid 101 can be reliably closed. Therefore,
Water leakage during washing can be prevented beforehand. In this case, rib 1
The same effect can be obtained without 02.

<Sixth Embodiment> A sixth embodiment of the present invention will be described with reference to the drawings. FIG. 15 shows a filter case 34 of the filter device 17 according to the present embodiment.
FIG. 16 is a perspective view of the filter body 36 and the cap 35.

The cap 35 is provided with the screw portion 37 of the expanding portion 47.
However, if the number of screwing of the cap 35 is large, the center angle θ (see FIG. 4) of the grip portion 35b becomes approximately 9 many times.
The position is set to 0 °, and there is a possibility that the lid 101 may be closed, assuming that the cap 35 is correctly attached, even though the screwing is insufficient. In this case, since the pressure of the packing 42 is insufficient, water leakage occurs during washing.

Therefore, in the present embodiment, as shown in FIG. 15, the groove of the screw portion 37 of the filter case 34 is partially omitted, and the cutout portion 3 whose length in the circumferential direction is selected to be L1.
As shown in FIG. 16, a threaded portion 35n on the cap 35 side is formed with a dimension L2 shorter than the length L1. The corresponding pair of missing portions 37a and screw portions 35n are provided at a plurality of locations at predetermined intervals.

According to this, the cap 35 is connected to the enlarged diameter portion 47.
When screwing into the screw portion 37, the screw portion 35n is
a to rotate the cap 35
It can be installed in an appropriate position within rotation. Therefore, the center angle θ of the grip 35b does not reach the position of about 90 ° many times, the cap 35 can be easily and reliably mounted, and water leakage during washing can be prevented.

Although the various embodiments of the present invention have been described above, what has been described so far is merely an example of the configuration of the present invention, and the scope of the present invention is not limited to this.
Various changes can be made without departing from the spirit of the invention.

[0074]

As described above, according to the filter device of the present invention, whether or not the cap is properly mounted on the filter case can be easily detected by opening and closing the lid. Therefore, it is possible to prevent water leakage during washing due to insufficient mounting of the cap.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a drum type washing machine including a filter device according to the present invention.

FIG. 2 is a perspective view of the periphery of a lid of the drum type washing machine provided with the filter device according to the first embodiment of the present invention, showing a state where the lid is opened.

FIG. 3 is a sectional view of the filter device.

FIG. 4 is a front view of the vicinity of a lid of the drum type washing machine, showing a state in which the lid is closed.

FIG. 5 is a sectional view of another embodiment of the filter device.

FIG. 6 is a cross-sectional view of still another embodiment of the filter device.

FIG. 7 is a partial cross-sectional view around a lid of a filter device according to a second embodiment of the present invention.

FIG. 8 is a view from arrow A in FIG. 8;

FIG. 9 is a partial cross-sectional view around a lid of a filter device according to a third embodiment of the present invention.

FIG. 10 is a view from the direction of arrow B in FIG. 9;

FIG. 11 is a partial cross-sectional view around a lid of a filter device according to a fourth embodiment of the present invention.

FIG. 12 is a view as viewed from an arrow C direction in FIG. 11;

FIG. 13 is a partial cross-sectional view around a lid of a filter device according to a fifth embodiment of the present invention.

14 is a view as seen from an arrow D in FIG. 13;

FIG. 15 is a sectional view showing a filter case of a filter device according to a sixth embodiment of the present invention.

FIG. 16 is a perspective view showing a filter body and a cap of the filter device.

FIG. 17 is a sectional view showing a drum type washing machine having a conventional filter device.

FIG. 18 is a perspective view showing the filter device.

FIG. 19 is a sectional view showing the filter device.

FIG. 20 is a sectional view showing a filter case of the filter device.

FIG. 21 is a perspective view showing a filter body and a cap of the filter device.

[Explanation of symbols]

 Reference Signs List 1 outer box 3 door 4 water tank 5 drum 9 drive device 16a, 16b drain duct 17 filter device 18 drain pump 18a pump room 18b impeller 18c motor 19 pump device 33 drain pipe 34 filter case 35 cap 35b grip 35e, 35f recess 36 filter body 38 inflow port 39 outflow port 42 packing 44 ventilation hole 45 compression spring 47 enlarged diameter portion 47a inner wall 47b protrusion 51 filter portion 53 cylindrical portion 54 flange portion 101 lid body 102 rib 103 hook 104 locking hole 105 moving element 108 Reed switch 109 Magnetic piece 110 Convex part 201 Magnet body 202 Metal piece

Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat II (Reference) B01D 35/02 P (72) Inventor Masahiro Sato 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka F-term in Sharp Corporation (Reference) 3B155 AA18 BA23 CA02 FE02 FE04 FE14 MA01 MA02 4D064 AA13 BG12 BG16 BG18

Claims (13)

[Claims] 1. A cylindrical body having an inflow port into which a fluid flows, a cap mounting opening in which a detachable cap is mounted is formed in front of the cylindrical body, and the cap mounting opening is formed in a rear end face. A filter case formed with an outlet through which a fluid flows out, and a filter body provided with a filter portion that is detachably disposed inside the filter case through the cap mounting opening and that filters impurities in the fluid. And a detecting device for detecting whether or not the cap is properly mounted in the cap mounting opening. 2. The apparatus according to claim 1, wherein the detecting means has a lid for opening and closing a front opening of the cap, and is a mechanism for inhibiting closing of the lid when the cap is improperly mounted. The filter device according to claim 1, characterized in that: 3. The detection means includes: the cap screwed into the cap mounting opening; a lid that opens and closes a front opening of the cap; and a projection protruding from the lid side of the cap. And a rib protruding from the cap-side surface of the lid so as to face the gripping portion, and only when the gripping portion is at a predetermined position, the gripping portion and 2. The filter device according to claim 1, wherein the lid is closed and cut without contacting the protrusion. 3. 4. The filter device according to claim 3, wherein the rib is provided at a position where the cap is prevented from being loosened when the lid is closed. 5. The filter according to claim 3, wherein the rib is provided in a direction in which the flow of water flowing down the lid is not obstructed when the lid is open. apparatus. 6. The cap is formed on the cap screwed into the cap mounting opening, a lid for opening and closing a front opening of the cap, and a peripheral edge of the cap. A concave portion, a hook protruding from the cap-side surface of the lid, and a locking hole that is at least partially closed by a peripheral portion of the cap and is inserted and locked by the hook, When the mounting state of the cap is appropriate, the recess is aligned with the locking hole and the locking hole is opened, whereby the lid is closed and cut off. The filter device according to claim 1, wherein: 7. The detecting means is formed on the cap screwed into the cap mounting opening, a lid for opening and closing a front opening of the cap, and a peripheral edge of the cap. A concave portion, and a convex portion protruding from the surface of the lid on the cap side and fitting with the concave portion, wherein when the cap is properly mounted, the concave portion and the convex portion are fitted. The filter device according to claim 1, wherein the lid is configured to be closed by being combined. 8. The cap is formed on the cap to be screwed into the cap mounting opening, a lid for opening and closing a front opening of the cap, and a peripheral portion of the cap. A projection, a hook protruding from the cap-side surface of the lid, a locking hole through which the hook is inserted and locked, and a rotatably mounted near the locking hole. A moving element biased in a direction to close at least a part of the locking hole, wherein when the cap is properly mounted, the protrusion pushes the moving element to form the locking hole. The filter device according to claim 1, wherein the lid is closed by opening the cover. 9. The cap is formed at the periphery of the cap, the cap being screwed into the cap mounting opening, a lid for opening and closing a front opening of the cap, and a peripheral portion of the cap. A concave portion, a magnet body provided on the surface of the lid on the cap side, and a metal piece that is at least partially covered by a peripheral portion of the cap and that is attracted to the magnet body, The cap is adapted to be closed when the recess is aligned with the metal piece and the metal piece is exposed when the cap is properly mounted. 2. The filter device according to 1. 10. A stopper for restricting rotation of the cap is provided, and when the cap is properly mounted, the stopper acts to restrict the rotation of the cap. The filter device according to claim 3. 11. The cap according to claim 3, wherein the cap is screwed into the cap mounting opening by an amount of rotation within one rotation so as to be mounted at an appropriate position.
The filter device according to claim 10. 12. When the lid is opened and closed, ON / OFF is performed.
The filter device according to any one of claims 2 to 11, further comprising a lid open / close detection switch provided. 13. The filter device according to claim 1, further comprising a cap attachment detection switch that is turned on / off depending on whether or not the attachment state of the cap is appropriate.