JP4053059B2 - Filter device - Google Patents

Description

  The present invention relates to a filter device including a cap of a filter case and a lid that opens and closes a front opening of the cap.

  FIG. 17 is a cross-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 the bottom base 41, and the upper surface of the outer box 1 is covered with the top plate 40. The outer box 1 is formed by sheet metal processing of a decorative steel plate. The top plate 40 is formed of a compression board or the like and is screwed to the outer box 1. The front of the outer box 1 can be opened and closed with an opening / closing door 3. An operation panel 11 having operation keys is provided on the front upper portion of the outer box 1.

  A bottomed cylindrical water tank 4 having an opening 4 a on the front surface is laterally provided in the outer box 1, and a bottomed cylindrical drum 5 is disposed in the water tank 4. A driving mechanism 9 is integrated with the water tank 4. A shaft portion 5 e fixed to the drum 5 is rotatably supported by a bearing 6 of the drive mechanism 9 so that the drum 5 can be driven to rotate by the drive mechanism 9.

  A small hole 5 a is provided in the peripheral wall of the drum 5. The small holes 5a allow washing water to flow between the water tank 4 and the drum 5 during washing. A baffle 5b protrudes from the inner wall surface of the drum 5 so that the laundry is hooked and lifted by the rotation of the drum 5 and is dropped into the washing water.

  A packing 10 made of an elastic material such as rubber or soft resin is attached to the periphery of the laundry input port 1a provided on the front surface of the outer box 1 and the opening 4a of the water tub 4 so as to form a passage for taking in and out the laundry. ing. The opening / closing door 3 is provided with a projecting window 3a made of a transparent member so that the inside of the drum 5 can be seen.

  The packing 10 has a structure in which when the open / close door 3 is closed, the inner peripheral edge 10a is in close contact with the peripheral edge of the window portion 3a to close the passage. Thereby, waterproofing during washing operation is performed. Further, the packing 10 is provided with a bellows or the like so as to bend and follow in accordance with the swing of the water tank 4.

  A water supply pipe 12 that communicates with the water pipe is disposed in the upper part 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.

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

  Since the drain pump 18 cannot stop the water, the drain pipe 33 is erected up above the level of the washing water supplied to the water tank 4. Thereby, water leakage is prevented and it can drain to the exterior.

  A water level sensor 23 is provided in the drainage duct 16 a from the air trap 22 through the pressure guiding pipe 21. The water level sensor 23 moves the magnetic body in the coil in accordance with the pressure change in the air trap 22. The resulting change in coil inductance is detected as a change in oscillation frequency, and the water level in the water tank 4 is detected.

  The filter device 17 is configured as shown in the perspective and sectional views of FIGS. FIG. 20 is a sectional view of the filter case 34. A diameter-enlarged 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 threaded portion 37 is formed in the enlarged diameter portion 47, and the cap 35 is fastened by the threaded 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 and 36a with a compression spring 45 interposed therebetween. By rotating the cap 35 with the handle portion 35 b, the cap 35 can be detached and the filter body 36 can be taken out from the filter case 34.

  The filter body 36 is configured as shown in FIG. The cylindrical filter portion 51 is integrated with a front surface portion 43 that closes the front surface. The filter portion 51 is made of a resin molded product and is formed in a net shape so as to have an opening 51a. Reference numeral 52 denotes a rib for ensuring the strength of the filter unit 51. The filter part 51 may be formed by sticking fine fibers to the peripheral surface of the rib 52.

  A cylindrical portion 53 whose peripheral surface is closed without forming the opening 51 a is formed behind the filter portion 51, and an opening 54 a (see FIG. 19) is provided on the end surface of the cylindrical portion 53. Thus, a flange 54 protruding in the radial direction is formed. A packing 42 made of an elastic material such as rubber is fixed to the front surface portion 43.

  In FIG. 19, an inflow port 38 through which washing water flows is provided on the peripheral surface of the filter case 34, and an outflow port 39 through which washing water flows out is provided at the rear part. The inner diameter of the inflow port 38 is smaller than the inner diameter of the filter case 34. As a result, foreign substances having a size that can pass through the inflow port 38 can flow into the filter case 34 without closing the entrance to the filter case 34. Further, the flange portion 54 of the filter case 34 is arranged facing the outflow port 39, and the opening 54 a and the outflow port 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 34 d via the compression spring 45 and the front surface portion 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 protrusion 47b protruding in the axial direction is formed on the inner wall surface of the step 34d. Thereby, since the packing 42 is press-contacted locally, water leakage prevention performance can be improved more.

  At the same time, the flange 54 of the filter body 36 is pressed around the outlet 39 by the elastic force of the compression spring 45 and the packing 42. Thereby, the collar part 54 and the rear-end surface 34a of the filter case 34 are closely_contact | adhered, and a foreign material cannot flow out between them.

  When the drainage pump 18 is driven, the washing water flowing into the filter device 17 from the inlet 38 is filtered by the filter unit 51 to remove foreign matters such as yarn waste. Then, the washing water flows out from the outlet 39 and is guided to the pump chamber 18a (see FIG. 17) of the drainage pump 18. Thereafter, the washing water from which impurities are removed is drained from the rear part of the washing machine through the drain pipe 33.

  At this time, since the peripheral surface of the cylindrical portion 53 is blocked, the washing water flowing out from 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 vent hole 44, the air pumping of the drain pump 18 can be prevented. The vent 44 is provided at 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 portion 54 of the filter body 36 is in close contact with the periphery of the washing water outlet 39, the washing water containing impurities is filtered out by the filter portion 51 without flowing out from the outlet 39. Only the wash water flows out from the outlet 39. Therefore, failure of the drainage pump 18 can be prevented.

  Further, the flange portion 54 is formed to have substantially the same diameter as the inner diameter of the filter case 34. For this reason, when the cap 35 is removed and the filter body 36 is pulled out in the axial direction, the flange portion 54 slides on the inner peripheral wall 34b of the filter case 34, and the deposits attached to the inner peripheral wall 34b can be removed. As a result, the inside of the filter case 34 can be easily cleaned, and the filter device 17 can be easily prevented from being blocked by deposits attached to the inner peripheral wall 34b.

  At this time, the deposits removed from the inner peripheral wall 34 b of the filter case 34 and the foreign matters removed by the filter body 36 are scraped out together with the remaining washing water in the filter case 34 by the flange portion 54. A guide part 47c having a further enlarged diameter is formed at the lower part of the enlarged diameter part 47, and the wash water and the like scraped out are guided to a narrow range by the guide part 47c and stored in a tray T that is installed in advance. Thereby, when the cap 35 is opened, washing water or the like can be prevented from being scattered and soiling the floor surface or the like. 34e and 34f are a plurality of ribs protruding in the axial direction in the filter case 34, and hold the filter body 36 coaxially with the filter case 34.

  In FIG. 18, stoppers 34 c and 34 d projecting forward in the axial direction are formed on the end face of the front surface of the filter case 34. The cap 35 is formed with a protrusion 35c that protrudes rearward in the axial direction. The stopper 34d is formed slightly lower than the stopper 34c. When the cap 35 is tightened, the protrusion 35c gets over the stopper 34d and comes into contact with the stopper 34c, thereby locking the cap 35.

  As a result, the cap 35 can be tightened to a certain position, damage to the packing 42 due to overtightening can be prevented, and water leakage due to insufficient tightening can be prevented. Further, the loosening of the cap 35 due to vibration of the washing machine or the like is stopped when the protruding portion 35c comes into contact with the stopper 34d, and water leakage can be prevented.

  However, in this configuration of the conventional filter device, even if the cap 35 is not screwed in sufficiently, it can be seen that the cap 35 is correctly attached, so that the operation of the washing machine is inadvertently started. There is a risk. In this case, since the packing 42 is not in close contact, water leaks to the outside of the washing machine.

  Such an unexpected situation is likely to occur when, for example, the person wearing the cap 35 is different from the user of the washing machine.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a filter device that can prevent fluid leakage.

To achieve the above object, the filter device of the present invention is formed with an inflow port through which a fluid flows, an outflow port through which the fluid flows out, and a cap mounting opening to which a removable cap is mounted. A filter case, and a filter body that is detachably disposed in the filter case from the cap mounting opening, and the cap is rotated in the cap mounting opening to obtain an appropriate mounting state. In the filter device for preventing fluid leakage from the cap mounting opening, the cap includes a front opening positioned in front of the cap mounting opening, and a lid for opening and closing the front opening. in a state but which is mounted in the cap fitting opening, when the lid is Ru closed, when the mounted state of the cap is appropriate for the cap Closing the lid engaged with the edge, and wherein a protrusion for inhibiting the closing of the lid is not engaged on the periphery, is provided on a rear surface of the lid when not appropriate To do.
The filter device according to the present invention includes a filter case in which an inflow port into which a fluid flows, an outflow port from which the fluid flows out, and a cap mounting opening to which a removable cap is mounted, and the filter A filter body detachably disposed in the case from the cap mounting opening, and the cap mounting opening by rotating the cap to the cap mounting opening to obtain an appropriate mounting state. In the filter device for preventing water leakage from a portion, the filter device includes a front opening located in front of the cap mounting opening, and a lid that opens and closes the front opening, and the cap is disposed on the cap mounting opening. in the mounted state, when the lid is Ru closed, when the mounted state of the cap is appropriate closed engage the lid to the peripheral edge of the cap , When not appropriate protrusions that inhibit the closing of the lid is not engaged on the periphery, characterized in that provided on the rear surface of the lid.
Further, in the filter device having the above configuration, the lid is pivotally supported at the lower end side thereof, and when the lid is opened and the cap is removed, the lid is opened from the cap mounting opening. It is good to set it as the structure which fluid or water flows down along the back surface of the said cover body.

  In the filter device configured as described above, the convex portion may be configured as a hook whose tip is processed into a hook shape.

  Moreover, the filter apparatus of the said structure WHEREIN: It is good to set it as the structure which maintains the said closed body by the said hook engaging with the peripheral part of the said cap.

  As described above, according to the filter device of the present invention, when the lid is closed, the cap of the filter case and the lid are engaged.

  Furthermore, when the lid is opened and the cap is removed, the fluid travels along the back surface of the lid, so that the flowing fluid or water can be quickly recovered.

  <First Embodiment> A first embodiment of the present invention will be described with reference to the drawings. For convenience of explanation, the same reference numerals are given to the same portions as those in FIGS. 17 to 21 of the conventional example. FIG. 1 is an external perspective view of a drum type washing machine including 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 reference numeral 101 denotes a lid that opens and closes an opening formed at the lower right front of the main body 1.

  FIG. 2 is a perspective view of the periphery of the lid 101 and shows a state in which the lid 101 is opened. The lid body 101 is pivotally supported at the lower end so that the upper end side can be opened and closed with the lower end as a center. On the back surface of the lid body 101, a single rib 102 extending obliquely and a hook 103 whose tip is processed into a hook shape project.

  In addition, as indicated by the broken-line arrows in FIG. 2, the ribs 102 are disposed so as to have a gentle inclination with respect to the water flow direction. Therefore, when the lid 101 is opened and the cap 35 is removed, the water flowing down along the back surface of the lid 101 is quickly collected in the tray T (see FIG. 17) without being obstructed. .

  FIG. 3 is a cross-sectional view of the filter device 17. On the lid body 101 side of the cap 35, there is a depressed portion 351 that is depressed in a cup shape, and a gripping portion 35b is projected to extend in the diameter direction through the center of the depressed substantially circular surface. A locking hole 104 through which the hook 103 is inserted and locked is provided in a portion corresponding to the hook 103 of the lid 101 of the main body 1.

  Hereinafter, when the cap 35 is screwed into the threaded portion 37 of the enlarged diameter portion (cap mounting opening) 47 and the central angle θ (see FIG. 4) of the gripping portion 35b becomes approximately 90 °, the protruding portion 35c ( 18) is locked between the stoppers 34c and 34d (see FIG. 18), and the cap 35 is described as being appropriately attached to the filter case 34 via the packing 42.

  FIG. 4 is a front view of the periphery of the lid 101 and 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 gripping part 35b is approximately 90 °, the rib 102 and the gripping part as shown by the broken lines in FIGS. The lid 101 can be completely closed without the abutment of 35b. At the same time, since the hook-like portion of the hook 103 is locked in the locking hole 104, the lid 101 is locked so as not to open easily.

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

  On the other hand, when the center angle θ of the gripping portion 35b is at a position other than 90 °, even if the lid body 101 is closed, the rib 102 comes into contact with the gripping portion 35b and the lid body 101 can be closed. Disappear. Therefore, since it is easily detected that the cap 35 is insufficiently installed, the user rotates the grip portion 35 to set the cap 35 at an appropriate position, and then closes the lid body 101 to perform washing. Water leakage from the filter device 17 can be prevented in advance.

  FIG. 5 is a cross-sectional view of the 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 configuration of this embodiment is that a lid open / close detection switch 107 is provided that 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 open / close detection switch 107 is not turned ON, the fact is notified, the operation of the washing machine cannot be started, or the lid body 101 is opened during operation and the lid open / close detection switch 107 is opened. When 107 is turned off, the operation of the washing machine can be temporarily stopped in an emergency, so that safety is improved and water leakage can be prevented more reliably. In this case, the same effect can be obtained without the rib 102.

  FIG. 6 is a cross-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. A characteristic point of this embodiment is that a magnetic piece 109 made of a magnetic material is disposed in contact with a peripheral portion of the cap 35, and at one place on the outer peripheral surface of the spread portion 47 of the filter case 34. When the reed switch 108 is provided and the cap 35 is properly attached (the central angle θ of the gripping portion 35b (see FIG. 4) is at a position of approximately 90 °), the magnetic piece 109 and the reed switch 108 are arranged. The reed switch 108 is turned on by facing each other.

  According to this, for example, if the reed switch 108 is not turned on, it is possible to perform control such that the operation of the washing machine cannot be started, thereby improving safety and reliably preventing water leakage during washing. 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 around the lid body 101 of the filter device 17 according to the present embodiment, and FIG. 8 is a front view as seen from the direction of the arrow A. FIG. The same members as those in the first embodiment in FIGS. 1 to 4 are denoted by the same reference numerals.

  As shown in FIG. 7, the characteristic configuration of the present embodiment is provided with a convex portion 110 on the back side of the lid 101 on the hook 103 side, and as shown in FIG. 8, the convex portion 110 is formed on the peripheral portion of the cap 35. Is provided with a recess 35f to be engaged. Here, it is assumed that the concave portion 35f is on an extension line of the gripping portion 35b, and the convex portion 110 is in a position where it engages with the concave portion 35f when the cap 35 is mounted at an appropriate position. .

  In this configuration, when the cap 35 is rotated clockwise as shown in FIG. 8A and screwed in, the rotation of the cap 35 is restricted by the stoppers 34c and 34d (see FIG. 18), and FIG. As described above, the rotation of the cap 35 is stopped at a position where the central angle θ (see FIG. 4) of the gripping portion 35b becomes approximately 90 °. At this time, since the concave portion 35f is located at the upper end of the cap 35, when the lid body 101 is closed in the direction of F in FIG.

  According to this, when the lid 101 is closed, the cap 102 is avoided by avoiding contact between the rib 102 and the grip portion 35b, fitting between the convex portion 110 and the concave portion 35f, and locking the hook 103 to the locking hole 104. Only when 35 is in an appropriate mounting state, the lid 101 can be reliably closed, and the cap 35 after the lid 101 is closed is prevented from loosening. Therefore, it is possible to prevent water leakage during washing. 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 around the lid body 101 of the filter device 17 according to the present embodiment, and FIG. 10 is a front view as seen from the direction of the arrow B. The same members as those in the first embodiment in FIGS. 1 to 4 are denoted by the same reference numerals.

  As shown in FIGS. 9 and 10, the characteristic configuration of the present embodiment is provided with a concave portion 35 f similar to the above on the peripheral portion of the cap 35, and a latch partially blocked by the peripheral portion of the cap 35. The hole 104 is provided. Here, it is assumed that the concave portion 35f is on the extension line of the gripping portion 35b, and the convex portion 101 is in a position where it engages with the concave portion 35f when the cap 35 is mounted at an appropriate position. .

  In this configuration, when the cap 35 is rotated clockwise as shown in FIG. 10A and screwed in, the rotation of the cap 35 is restricted by the stoppers 34c and 34d (see FIG. 18), and FIG. As described above, the rotation of the cap 35 is stopped at a position where the central angle θ (see FIG. 4) of the gripping portion 35b becomes approximately 90 °. At this time, since the concave portion 35f is positioned at the upper end of the cap 35, the concave portion 35f and the locking hole 104 are matched, and the locking hole 104 is fully opened.

  According to this, when the lid 101 is closed, the abutment 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 in an appropriate mounting state. Only at certain times can the lid 101 be reliably closed. Therefore, it is possible to prevent water leakage during washing. In this case, the same effect can be obtained without the rib 102.

  <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 around the lid body 101 of the filter device 17 according to the present embodiment, and FIG. 12 is a front view as seen from the direction of the arrow C. The same members as those in the first embodiment in FIGS. 1 to 4 are denoted by the same reference numerals.

  As shown in FIGS. 11 and 12, the characteristic configuration of the present embodiment is provided with a protrusion 35 g that protrudes in the radial direction from the peripheral edge of the cap 35, and rotates above the locking hole 104 of the main body 1. The movable element 105 is provided so as to be pivotable by the shaft 106 and biased in a direction to close a part of the locking hole 104 by the spring 111. Here, it is assumed that the protruding portion 35g is on the extended line of the gripping portion 35b, and the locking hole 104 is in a position opened by the protruding portion 35g when the cap 35 is mounted at an appropriate position. Shall.

  In this configuration, when the cap 35 is rotated clockwise as shown in FIG. 12 (a) and screwed in, the rotation of the cap 35 is restricted by the stoppers 34c and 34d (see FIG. 18), and FIG. 12 (b). As described above, the rotation of the cap 35 is stopped at a position where the central angle θ (see FIG. 4) of the gripping portion 35b becomes approximately 90 °. At this time, the protrusion 35g pushes the movable element 105, so that the movable element 105 rotates counterclockwise against the bias of the spring 111, and the locking hole 104 is fully opened.

  According to this, when the lid 101 is closed, the abutment 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 in an appropriate mounting state. Only at certain times can the lid 101 be reliably closed. Therefore, it is possible to prevent water leakage during washing. In this case, the same effect can be obtained without the rib 102.

  <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 around the lid body 101 of the filter device 17 according to the present embodiment, and FIG. 14 is a front view as seen from the direction of the arrow C. The same members as those in the first embodiment in FIGS. 1 to 4 are denoted by the same reference numerals.

  As shown in FIGS. 13 and 14, the characteristic configuration of the present embodiment is provided with a recess 35 e in the peripheral portion of the cap 35, and a magnet body instead of the hook 103 (see FIG. 3) on the back surface of the lid body 101. 201 is provided, and a metal piece 202 partially covered by the peripheral edge of the cap 35 is provided at a position corresponding to the magnet body 201 of the main body 1 instead of the locking hole 104 (see FIG. 3). . Here, it is assumed that the concave portion 35e is on the extension line of the gripping portion 35b, and the metal piece 202 is in a position exposed by the concave portion 35e when the cap 35 is mounted at an appropriate position. .

  In this configuration, when the cap 35 is rotated clockwise as shown in FIG. 14 (a) and screwed in, the rotation of the cap 35 is regulated by the stoppers 34c and 34d (see FIG. 18), and FIG. 14 (b). As described above, the rotation of the cap 35 is stopped at a position where the central angle θ (see FIG. 4) of the gripping portion 35b becomes approximately 90 °. At this time, since the concave portion 35e is positioned at the upper end of the cap 35, the concave portion 35e and the metal piece 202 are matched to expose the entire metal piece 202.

  According to this, when the lid body 101 is closed, the contact between the rib 102 and the gripping portion 35b is avoided, and the magnet body 201 is attracted to the metal piece 202, so that the cap 35 is in an appropriate mounting state. Only at times can the lid 101 be reliably closed. Therefore, it is possible to prevent water leakage during washing. In this case, the same effect can be obtained without the rib 102.

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

  The cap 35 is screwed into the screw portion 37 of the spreading portion 47. However, if the cap 35 is screwed many times, the center angle θ (see FIG. 4) of the gripping portion 35b is repeatedly set at a position of approximately 90 °. Therefore, it is considered that the cap 35 is correctly attached in spite of insufficient screwing, and the lid 101 may be closed. In this case, since the pressure bonding 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 threaded portion 37 of the filter case 34 is partially missing, and a missing portion 37a whose circumferential length is selected as L1 is provided. As shown in FIG. 16, the screw portion 35n on the cap 35 side is formed with a dimension L2 shorter than L1. The corresponding pair of missing portions 37a and screw portions 35n are provided at a plurality of locations at a predetermined interval.

  According to this, when the cap 35 is screwed into the threaded portion 37 of the enlarged diameter portion 47, the cap 35 can be mounted at an appropriate position within one rotation by inserting and rotating the threaded portion 35n into the missing portion 37a. . Accordingly, the center angle θ of the gripping portion 35b is not set at a position of about 90 ° many times, the cap 35 can be easily and reliably attached, and water leakage during washing can be prevented.

  Although 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 invention, and the scope of the present invention is not limited thereto and does not depart from the spirit of the invention. The present invention can be implemented with various modifications.

1 is an external perspective view of a drum type washing machine including a filter device according to the present invention. It is a perspective view of a lid body periphery of a drum type washing machine provided with a filter device concerning a 1st embodiment of the present invention, and shows the state where a lid body was opened. It is sectional drawing of the filter apparatus. It is a front view of the lid body periphery of the drum type washing machine, and shows a state where the lid body is closed. It is sectional drawing of the other Example of the filter apparatus. It is sectional drawing of the further another Example of the filter apparatus. It is a fragmentary sectional view of the periphery of a lid of a filter device concerning a 2nd embodiment of the present invention. It is an arrow view from the A direction of FIG. It is a fragmentary sectional view of the periphery of a lid of a filter device concerning a 3rd embodiment of the present invention. It is an arrow view from the B direction of FIG. It is a fragmentary sectional view of the periphery of a lid of a filter device concerning a 4th embodiment of the present invention. It is an arrow view from the C direction of FIG. It is a fragmentary sectional view of the periphery of a lid of a filter device concerning a 5th embodiment of the present invention. It is an arrow view from the D direction of FIG. It is sectional drawing which shows the filter case of the filter apparatus which concerns on the 6th Embodiment of this invention. It is a perspective view which shows the filter body and cap of the filter apparatus. It is sectional drawing which shows the drum type washing machine which has the conventional filter apparatus. It is a perspective view which shows the filter apparatus. It is sectional drawing which shows the filter apparatus. It is sectional drawing which shows the filter case of the filter apparatus. It is a perspective view which shows the filter body and cap of the filter apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer box 3 Opening / closing door 4 Water tank 5 Drum 9 Drive device 16a, 16b Drain duct 17 Filter device 18 Drain pump 18a Pump chamber 18b Impeller 18c Motor 19 Pump device 33 Drain pipe 34 Filter case 35 Cap 35b Grasping part 35e, 35f Recess 36 Filter body 38 Inlet 39 Outlet 42 Packing 44 Vent hole 45 Compression spring 47 Expanded part 47a Inner wall 47b Projection part 51 Filter part 53 Cylindrical part 54 Girder part 101 Lid body 102 Rib 103 Hook 104 Locking hole 105 Movable element 108 Reed switch 109 Magnetic piece 110 Convex part 201 Magnet body 202 Metal piece

Claims (5)

A filter case formed with an inflow port through which fluid flows, an outflow port through which the fluid flows out, and a cap mounting opening to which a removable cap is mounted; and the cap mounting opening inside the filter case And a filter body that is detachably arranged from the section,
In the filter device for preventing leakage of fluid from the cap mounting opening by rotating the cap to the cap mounting opening to obtain an appropriate mounting state,
A front opening located in front of the cap mounting opening; and a lid for opening and closing the front opening;
In a state in which the cap is attached to the cap fitting opening, when the lid is Ru closed, the lid engages with the peripheral edge of said cap when mounted state of the cap is appropriate closed, filter device, characterized in that when not appropriate to the convex portion to inhibit the closing of the lid is not engaged on the periphery, is provided on the rear surface of the lid. A filter case formed with an inflow port through which fluid flows, an outflow port through which the fluid flows out, and a cap mounting opening to which a removable cap is mounted; and the cap mounting opening inside the filter case And a filter body that is detachably arranged from the section,
In the filter device for preventing water leakage from the cap mounting opening by rotating the cap to the cap mounting opening to obtain an appropriate mounting state,
A front opening located in front of the cap mounting opening; and a lid for opening and closing the front opening;
In a state in which the cap is attached to the cap fitting opening, when the lid is Ru closed, the lid engages with the peripheral edge of said cap when mounted state of the cap is appropriate closed, filter device, characterized in that when not appropriate to the convex portion to inhibit the closing of the lid is not engaged on the periphery, is provided on the rear surface of the lid. The lid body is pivotally supported at the lower end side of the lid body,
3. The filter according to claim 1, wherein when the cap is opened and the cap is removed, fluid or water flows down from the cap mounting opening along the back surface of the cap. apparatus.   The filter device according to claim 1, wherein the convex portion is a hook whose tip is processed into a hook shape.   The filter device according to claim 4, wherein the lid body maintains a closed state by the hook engaging with a peripheral edge portion of the cap.

Images