JP6470145B2 - Washing and dewatering tank and washing machine - Google Patents

Description

  The present invention relates to a washing and dewatering tank and a washing machine.

  Conventionally, as a washing and dewatering tub, as disclosed in Japanese Patent No. 3078684 (Patent Document 1), it is attached to a cylindrical body made of stainless steel plate and a peripheral edge of a lower end opening of the cylindrical body. Some have a bottom made of stainless steel and are placed in the water tank of the washing machine.

  The peripheral edge of the upper end opening of the bottom is bent into an inverted U shape inside to form a goby fold. On the other hand, the peripheral edge of the lower end opening of the cylindrical body is bent outwardly into a U-shape to form a goby fold. By joining the goby folding part of the bottom part and the goby folding part of the cylindrical body part by goze folding caulking, and filling the sealing material between these goat folding parts, the lower end opening peripheral part of the cylindrical body part and Watertightness between the bottom edge of the upper end opening at the bottom is achieved.

  In addition, by not providing a through hole in the peripheral wall of the cylindrical body, water does not accumulate between the washing / dehydrating tub and the water tank during the washing process. Thereby, the said washing and dewatering tank can improve water-saving performance.

Japanese Patent No. 3078684

  By the way, the conventional washing and dewatering tub is made of a stainless steel plate for both the cylindrical body and the bottom, so if a bottom made of synthetic resin is used instead of the bottom made of stainless steel, the manufacturing cost is reduced. Can be lowered. That is, the conventional washing and dewatering tub has a problem that the cost has not been sufficiently reduced.

  However, in order to solve the above problem, if a synthetic resin bottom is used instead of a stainless steel steel bottom, the following problem will newly occur.

  First, in order to use the above-mentioned synthetic resin bottom part, in order to ensure watertightness between the inner peripheral surface of the lower end opening peripheral part of the cylindrical body part and the outer peripheral surface of the bottom part, an annular packing is provided over the entire circumference between them. Must be placed.

  However, in order to form the cylindrical body by bending the stainless steel plate, the distance between the inner peripheral surface of the lower end opening peripheral part of the cylindrical body and the outer peripheral surface of the bottom is made constant over the entire periphery. It is difficult. For this reason, there exists a problem that a clearance gap arises between the lower end opening peripheral part of the said cylindrical trunk | drum, and an annular packing, and the watertightness of a cylindrical trunk | drum and a bottom part falls.

  As a result, if the washing and dewatering tub does not have a through hole in the peripheral wall of the cylindrical body, even if water is collected in the washing and dehydrating tub during the washing process, the washing / dehydrating tub and the water Since water leaks out in the meantime, the water-saving performance deteriorates.

  Accordingly, an object of the present invention is to provide a washing / dehydrating tub capable of improving the water-tightness between a metal cylindrical trunk and a synthetic resin bottom with a simple configuration, and a washing machine equipped with the washing / dehydrating tub. It is to provide.

In order to solve the above problems, the washing and dewatering tub of this invention is
A metal cylindrical body,
A bottom portion made of a synthetic resin, which is disposed on the lower end side of the cylindrical body portion and forms an annular packing holding portion between the inner peripheral surface of the cylindrical body portion;
An annular packing held by the annular packing holding portion between the inner peripheral surface of the cylindrical body and the outer peripheral surface of the bottom; and
An annular packing presser attached to the bottom so as to press the annular packing held by the annular packing holding part from below with an upper end;
The annular packing is pressed so that the annular packing presses the annular packing so that the annular packing is urged radially outward against the inner peripheral surface of the cylindrical body. Is elastically deformed.

Moreover, in the washing and dewatering tank of one embodiment,
The bottom portion has a flange portion provided over the entire circumference of the outer peripheral surface,
The annular packing is in contact with the lower surface of the flange portion.

Moreover, in the washing and dewatering tank of one embodiment,
The bottom surface of the flange portion of the bottom portion is inclined or curved so as to gradually become lower from the outer peripheral side toward the inner peripheral side.

Moreover, in the washing and dewatering tank of one embodiment,
A positioning portion is provided at the lower end portion of the cylindrical body portion so as to protrude above the flange portion of the bottom portion and radially inward from the outer peripheral edge of the flange portion.

Moreover, in the washing and dewatering tank of one embodiment,
The upper end portion of the annular packing retainer is inclined or curved so as to gradually decrease from the inner peripheral side toward the outer peripheral side.

Moreover, in the washing and dewatering tank of one embodiment,
The annular packing retainer is attached to the bottom with a screw,
By tightening the screw, the annular packing is pressed against the inner peripheral surface of the cylindrical body by pressing the annular packing at the upper end of the annular packing retainer. As described above, the annular packing is elastically deformed.

Moreover, in the washing and dewatering tank of one embodiment,
The bottom part is attached to the lower end side of the cylindrical body part with a screw via the annular packing presser.

Moreover, in the washing and dewatering tank of one embodiment,
The material of the annular packing retainer has higher rigidity than the material of the bottom portion.

Moreover, in the washing and dewatering tank of one embodiment,
The cylindrical body has a body material rolled up into a cylindrical shape, and the seam portion of the body material is joined by gouge folding except for the upper and lower ends,
The upper and lower ends of the seam portion of the cylindrical body portion are fastened together with screws by overlapping and overlapping the body plate material.

The washing machine of the present invention
Any one of the above washing and dewatering tanks is provided.

  According to this invention, the annular packing held by the packing holding portion between the inner peripheral surface of the metal cylindrical body and the outer peripheral surface of the synthetic resin bottom is moved upward at the upper end of the annular packing retainer. The ring-shaped packing is urged toward the outer side in the radial direction against the inner peripheral surface of the cylindrical body by pressing and elastically deforming, so that the metal cylindrical body and the synthetic resin are made with a simple configuration. A washing and dewatering tub that can improve watertightness with the bottom and a washing machine equipped with the washing and dewatering tub can be realized.

FIG. 1 is an external perspective view of a vertical washer / dryer as an example of the washing machine according to the first embodiment of the present invention. FIG. 2 is a top view of the vertical washing and drying machine. 3 is a longitudinal sectional view taken along line III-III in FIG. FIG. 4 is an enlarged longitudinal sectional view of the main part of FIG. FIG. 5 is a back view of the washing and dewatering tank. 6 is a longitudinal sectional view taken along line VI-VI in FIG. FIG. 7A is an enlarged cross-sectional view of a state where the annular packing in the region A of FIG. 6 is not attached. FIG. 7B is an enlarged cross-sectional view of a state where the annular packing in the region A of FIG. 6 is attached. FIG. 8A is an enlarged cross-sectional view of a state where the annular packing in region B of FIG. 6 is not attached. FIG. 8B is an enlarged cross-sectional view of a state where the annular packing in the region B of FIG. 6 is mounted. FIG. 9 is an exploded perspective view of the washing and dewatering tank. FIG. 10 is a perspective view of the annular packing presser of the washing and dewatering tub. FIG. 11 is a top view of the annular packing retainer. FIG. 12 is a side view of the annular packing retainer. 13 is a longitudinal sectional view taken along line XIII-XIII in FIG. FIG. 14 is a side view of the joint portion of the cylindrical body of the washing and dewatering tub. 15A is a cross-sectional view taken along line XVA-XVA in FIG. 15B is a cross-sectional view taken along line XVB-XVB in FIG. FIG. 15C is a sectional view taken along line XVC-XVC in FIG. FIG. 16A is an enlarged cross-sectional view of a main part corresponding to a region B in FIG. 6 of a vertical washer / dryer as an example of the washing machine according to the second embodiment of the present invention. FIG. 16B is an enlarged cross-sectional view showing a state where the annular packing of the vertical washing dryer is mounted.

  Hereinafter, the washing and dewatering tub and the washing machine of the present invention will be described in detail with reference to the illustrated embodiments.

[First Embodiment]
FIG. 1 shows an external view of a vertical washer / dryer as an example of the washing machine according to the first embodiment of the present invention as viewed from the upper front side, and FIG. 2 shows a top view of the vertical washer / dryer. Yes.

  As shown in FIGS. 1 and 2, the vertical washer / dryer according to the first embodiment includes a main casing 1 made of metal or synthetic resin, a water tank 2 (shown in FIG. 3), and a washing and dehydrating tank 100 (see FIG. 1). 3) and an operation display section 5 provided on the upper surface of the main casing 1. The user operates the operation display unit 5 to select a driving action. In addition, the operation display unit 5 displays the driving state with characters and numbers.

  FIG. 3 is a longitudinal sectional view taken along line III-III in FIG.

  As shown in FIG. 3, the main body casing 1 is formed in a rectangular tube shape and has a top opening on the top surface and a bottom opening on the bottom surface. A synthetic resin upper surface plate 11 provided with an operation display unit 5 and the like is fixed to the upper surface opening of the main casing 1. A synthetic resin base 12 is fixed to the lower surface opening of the main casing 1.

  The upper surface plate 11 is provided with a laundry loading port 1a for loading laundry into the vertical laundry dryer. The upper lid 4 that opens and closes the laundry input port 1a is rotatably supported by the upper surface plate 11 on the heel side (rear side) of the vertical laundry dryer. By rotating the upper lid 4 up and down, the laundry input port 1a is opened and closed.

  A water tank 2 is disposed in the main body casing 1, and a washing and dewatering tank 100 is disposed in the water tank 2. That is, the main body casing 1 accommodates a washing / dehydrating tub 100 and a water tub 2 for storing the washing / dehydrating tub 100. In the washing and dewatering tank 100, water for washing laundry or water for rinsing the laundry is collected. Each of the water tub 2 and the washing / dehydrating tub 100 has a bottomed cylindrical shape whose upper side is open, and the central axis is parallel to the vertical direction. Further, the central axis of the water tank 2 coincides with the central axis of the washing and dewatering tank 100.

  An annular balancer 40 is attached to the edge of the upper opening of the washing and dewatering tub 100. The annular balancer 40 functions to suppress vibration when the washing and dewatering tub 100 is rotated at a high speed for dehydrating the laundry. Further, a synthetic resin stirring blade (pulsator) 20 is rotatably disposed on the bottom surface in the washing and dewatering tub 100.

  A drive unit 50 for driving the washing and dewatering tank 100 and the stirring blade 20 is installed below the water tank 2. The central portion of the stirring blade 20 is attached to the tip of the rotation shaft 51 of the drive unit 50, and the bottom of the water tank 2 is attached to a location below the tip of the rotation shaft 51.

  The vertical washer-dryer includes a water supply unit 10 for supplying water into the washing and dewatering tub 100.

  FIG. 4 shows an enlarged longitudinal sectional view of the main part of the washing and dewatering tub 100. In FIG. 4, the same components as those in FIG. 3 are denoted by the same reference numerals.

  As shown in FIG. 4, the washing and dewatering tub 100 includes a cylindrical body portion 101 made of metal (for example, stainless steel) and a bottom portion made of synthetic resin (for example, plastic) disposed on the lower end side of the cylindrical body portion 101. 102. The cylindrical body 101 has a dewatering drain hole 101d above the water level during washing, and has a peripheral wall whose diameter increases as it approaches the upper side (see FIG. 6). The bottom portion 102 has a cup shape in which a concave portion for accommodating the stirring blade 20 is formed.

  A plurality of drainage grooves 111 extending in the vertical direction are provided on the inner peripheral surface of the cylindrical body portion 101. When the washing / dehydrating tub 100 rotates at a high speed during the dehydrating operation, the water in the washing / dehydrating tub 100 receives a centrifugal force and rises along the inner peripheral surface of the washing / dehydrating tub 100. At this time, the water rising along the inner peripheral surface of the washing and dewatering tub 100 is guided to a gap (not shown) provided in the upper part by the drainage groove 111, and from the gap and the dewatering drain hole 101d. It comes out between the water tank 2 and the washing and dewatering tank 100.

  FIG. 5 shows a back view of the washing and dewatering tub 100. In FIG. 5, the same components as those in FIGS. 3 and 4 are denoted by the same reference numerals.

  6 shows a longitudinal sectional view taken along line VI-VI in FIG. A region A (dotted circle portion) shown in FIG. 6 is a portion where the annular packing retainer 103 (shown in FIG. 7A) is fixed to the bottom portion 102 with a screw, and a region B (dotted circle portion) shown in FIG. The part which fixes the cylindrical trunk | drum 101 with the screw | thread via the annular packing presser 103 (shown in FIG. 8A) to the bottom part 102 is shown.

  7A is an enlarged cross-sectional view of region A in FIG. 6 (without the annular packing 104), and FIG. 7B is an enlarged cross-sectional view in a state where the annular packing 104 of region A in FIG. 6 is mounted. 7A and 7B, 103a is an outer peripheral wall portion, 103b is an inclined portion, 103c is an annular bottom portion, and 103d is an inner peripheral wall portion (see FIG. 10).

  As shown in FIGS. 7A and 7B, a flange portion 102 a is provided over the entire circumference of the outer peripheral surface of the bottom portion 102. In addition, a positioning portion 110 is provided at the lower end portion of the cylindrical body portion 101 so as to protrude above the flange portion 102a of the bottom portion 102 and radially inward from the outer peripheral edge of the flange portion 102a. The cross section of the positioning portion 110 is substantially V-shaped.

  The bottom part 102 is inserted into the lower end opening of the cylindrical body part 101 from the lower side, the upper part of the flange part 102a of the bottom part 102 abuts on the positioning part 110, and the bottom part 102 is positioned with respect to the cylindrical body part 101. Yes. At this time, an annular packing holding part H is formed between the lower side of the positioning part 110 of the cylindrical body part 101 and the outer peripheral surface of the bottom part 102. An annular packing 104 is held by the packing holding portion H. The cross-section of the annular packing 104 is circular (in a state where no pressure is applied from the periphery). Note that the cross-sectional shape of the annular packing 104 is not limited to a circular shape, and may be set as appropriate according to the configuration of the cylindrical body and the bottom.

  Then, the annular packing retainer 103 is inserted from below between the inner peripheral surface of the cylindrical body portion 101 and the outer peripheral surface of the bottom portion 102, and the annular packing retainer 103 is attached to the bottom portion 102 with screws 121. At this time, the annular packing 104 is pressed by the inclined portion 103 b at the upper end of the annular packing retainer 103 by tightening the screw 121 into the screw hole 122 of the bottom portion 102 from below. Thereby, the annular packing 104 is elastically deformed so that the annular packing 104 is urged toward the radially outer side with respect to the inner peripheral surface of the cylindrical body portion 101. A plurality of tightening points by the screws 121 are provided in the annular packing retainer 103 in the circumferential direction and at equal intervals, and the annular packing 104 is uniformly pressed by the upper end of the annular packing retainer 103.

  At this time, the annular packing 104 is further pressed against the lower surface of the flange portion 102 a of the bottom portion 102. Therefore, the space between the cylindrical body portion 101 and the bottom portion 102 can be reliably sealed.

  In this way, the ring packing 104 is elastically deformed by pressing the annular packing 104 at the upper end of the annular packing retainer 103 at the same time as the screw 121 for attaching the annular packing retainer 103 to the bottom 102 is tightened. Since the annular packing 104 is urged toward the radially outer side with respect to the inner peripheral surface of the body portion 101, the assemblability is good.

  On the other hand, FIG. 8A shows an enlarged sectional view of region B in FIG. 6 (without the annular packing 104), and FIG. 8B shows an enlarged sectional view of the state where the annular packing 104 in region B of FIG. . 8A and 8B, the same components as those in FIG. 7A are denoted by the same reference numerals.

  As shown in FIGS. 8A and 8B, the bottom 102 is attached to the lower end side of the cylindrical body 101 with a screw 123 via an annular packing retainer 103. At this time, by fixing the screw 123 to the screw hole 124 of the bottom portion 102 from the outer peripheral surface side of the cylindrical body portion 101, a fixing portion of the bottom portion 102 is provided in the vicinity of the annular packing 104 on the lower end side of the cylindrical body portion. In addition, the annular packing presser 103 can be used for fixing the cylindrical body portion 101 and the bottom portion 102 together. A plurality of tightening points by the screw 123 are provided on the lower end side of the cylindrical body portion 101 in the circumferential direction and at equal intervals, and the annular packing 104 is formed into a cylindrical shape by the inclined portion 103b at the upper end of the annular packing retainer 103. It is pressed against the body 101.

  FIG. 9 is an exploded perspective view of the washing / dehydrating tub 100. As shown in FIG. 9, the washing and dewatering tub 100 has a bottom 102 attached to the inner periphery of the lower end of the cylindrical body 101. Next, after inserting the annular packing 104 into the packing holding portion H (shown in FIGS. 7A and 8A) between the inner peripheral surface of the cylindrical body 101 and the outer peripheral surface of the bottom 102, the cylindrical body 101 An annular packing retainer 103 is inserted from below between the inner peripheral surface and the outer peripheral surface of the bottom 102.

  Next, an annular packing retainer 103 is attached to the bottom 102 by tightening a screw 121 (shown in FIG. 7A) from below, and then an annular packing retainer is tightened by tightening a screw 123 (shown in FIG. 8A) from the outside in the radial direction. The cylindrical body 101 and the bottom 102 are fixed via 103.

  10 shows a perspective view of the annular packing retainer 103 of the washing and dewatering tub 100, and FIG. 11 shows a top view of the annular packing retainer 103. As shown in FIG. As shown in FIGS. 10 and 11, the annular packing retainer 103 includes a short cylindrical outer peripheral wall portion 103a, an inclined portion 103b provided at the upper end of the outer peripheral wall portion 103a, and a lower end of the outer peripheral wall portion 103a. An annular bottom portion 103c provided over the entire circumference of the inner circumferential surface on the side, a short cylindrical inner circumferential wall portion 103d provided over the entire circumference on the inner circumferential side of the annular bottom portion 103c, and an inner circumferential surface of the outer circumferential wall portion 103a And a plurality of ribs 103e connecting the outer peripheral surface of the inner peripheral wall portion 103d. The upper end of the inner peripheral wall portion 103d is lower than the inclined portion 103b provided at the upper end of the outer peripheral wall portion 103a.

  The inclined portion 103b has an inclined surface that is inclined so as to gradually become lower from the inner peripheral side toward the outer peripheral side.

  A plurality of first screw hole portions 103f are provided at intervals in the circumferential direction of the outer peripheral wall portion 103a. The first screw hole portion 103f has a screw hole 124 of FIG. 8A. The annular bottom portion 103c and the annular bottom portion 103c are provided with a plurality of second screw hole portions 103g at intervals in the circumferential direction. The second screw hole 103g has a screw hole 122 in FIG. 7A.

  12 shows a side view of the annular packing presser 103, and FIG. 13 is a longitudinal sectional view taken along line XIII-XIII in FIG. Is shown. 12 and 13, the same components as those in FIG. 11 are denoted by the same reference numerals.

  FIG. 14 is a side view of the joint portion of the cylindrical body 101 of the washing / dehydrating tub 100. 15A shows a cross-sectional view taken along line XVA-XVA in FIG. 14, FIG. 15B shows a cross-sectional view taken along line XVB-XVB in FIG. 14, and FIG. 15C shows a cross-sectional view taken along line XVC-XVC in FIG. FIG.

  The peripheral wall of the cylindrical body 101 is a conical non-porous wall that is inclined with respect to the central axis of the washing and dewatering tub 100. The cylindrical body 101 is a conical body whose diameter is expanded upward by roll forming after a thin plate (thickness 0.5 to 0.6 mm) made of stainless steel, for example, is cut into a fan shape. The plate material 101a is formed into a cylindrical shape by joining roll-formed seam portions by gouge folding.

  At the upper end of the goby fold S (see FIG. 15C) of the cylindrical body 101 shown in FIG. 14, an extension piece 101 b extending in the circumferential direction is formed at one joint end of the joint portion of the cylindrical body 101, By superimposing the extension piece 101b on the other joining end, as shown in FIG. 15A, two overlapping portions are formed, and through holes 151, 152 are formed in both joining end portions in the two overlapping portions. The balancer 40 (shown in FIG. 3) is screwed through the through holes 151 and 152 to prevent the goby fold S from coming off due to centrifugal force during dehydration.

  On the other hand, an extension piece 101c extending in the circumferential direction is formed at one joint end of the joint portion of the cylindrical body 101 at the lower end of the goby fold S of the cylindrical body 101, and this extension piece 101c is connected to the other end. As shown in FIG. 15B, two overlapping portions are formed by polymerization at the joining end portions, and through holes 153 and 154 are formed at both joining end portions in the two overlapping portions, and the through holes 153, By fixing with screws via 154, the strength of the lower end side of the joint portion of the cylindrical body 101 is increased.

  According to the washing and dewatering tub 100 having the above-described configuration, the annular packing 104 held by the annular packing holding portion H between the inner peripheral surface of the cylindrical body portion 101 and the outer peripheral surface of the bottom portion 102 is replaced with the annular packing. The upper end of the presser 103 is pressed upward and elastically deformed, and the annular packing 104 is biased toward the radially outer side with respect to the inner peripheral surface of the cylindrical barrel 101, whereby the inner periphery of the cylindrical barrel 101 is The surface can be brought into close contact with the annular packing 104, and the watertightness between the inner peripheral surface of the cylindrical body 101 and the annular packing 104 can be improved. When the annular packing retainer 103 is attached to the bottom 102 in a state where the annular packing 104 is externally fitted between the inner circumferential surface of the cylindrical body 101 and the outer circumferential surface of the bottom 102 and the outer circumferential surface of the bottom 102. Furthermore, by pressing the annular packing 104 against the annular packing 104 at the upper end, the annular packing 104 can be easily elastically deformed, and watertightness can be secured with good assemblability. Therefore, it is possible to improve the watertightness between the metal cylindrical body 101 and the synthetic resin bottom 102 with a simple configuration.

  In addition, by using the synthetic resin bottom portion 102, the cost can be reduced and the weight can be reduced. Furthermore, the gap between the stirring blade 20 and the bottom 102 can be easily optimized so that foreign matter such as coins can be prevented from entering the gap between the stirring blade (pulsator) 20 and the bottom 102.

  Further, when the annular packing 104 is pressed upward at the upper end of the annular packing retainer 103, the flange portion 102 a provided over the entire outer periphery of the bottom portion 102 extends upward in the axial direction of the annular packing 104. Since the movement is restricted, the annular packing 104 is in close contact with the lower surface of the flange portion 102a. Thereby, the watertightness between the flange part 102a of the bottom part 102 and the annular packing 104 can be improved.

  Further, the positioning portion 110 provided at the lower end portion of the cylindrical body portion 101 projects above the flange portion 102a of the bottom portion 102 and radially inward from the outer peripheral edge of the flange portion 102a. When the bottom portion 102 made of synthetic resin is disposed on the lower end side of the cylindrical body portion 101, the upper side of the flange portion 102 a of the bottom portion 102 abuts on the positioning portion 110 of the cylindrical body portion 101, and the cylindrical body portion 101 is The bottom 102 can be positioned.

  Further, even if the annular packing 104 protrudes upward, it is hidden by the positioning part 110 of the cylindrical body 101 and cannot be seen, so that the aesthetic appearance can be maintained.

  The upper end of the annular packing retainer 103 is inclined so as to gradually become lower from the inner peripheral side toward the outer peripheral side, thereby pressing the annular packing 104 upward at the upper end of the annular packing retainer 103. Sometimes, the annular packing 104 is spread outward in the radial direction. Thereby, the contact pressure of the annular packing 104 to the inner peripheral surface side of the cylindrical body portion 101 is increased, and the inner peripheral surface of the cylindrical body portion 101 can be brought into close contact with the annular packing 104. The watertightness between the inner peripheral surface of the trunk portion 101 and the annular packing 104 can be further improved.

  Note that the upper end of the annular packing retainer 103 may be curved so as to gradually decrease from the inner peripheral side toward the outer peripheral side.

  Moreover, the strength of the bottom portion 102 can be improved by using a material having higher rigidity than the material of the bottom portion 102 for the annular packing retainer 103.

  Further, the upper and lower ends of the joint portion of the cylindrical body 101 joined by the goose fold caulking of the body plate material 101a are overlapped by extending the body plate material 101a, and the overlapped portions are fastened together with screws. Thereby, the intensity | strength of the joint part of the cylindrical trunk | drum 101 can be improved.

  In addition, according to the vertical washer / dryer having the above-described configuration, the water tightness between the metal cylindrical barrel 101 and the synthetic resin bottom 102 can be improved with a simple configuration, and a reduction in water-saving performance can be prevented. .

  In the first embodiment, the annular packing retainer 103 that is inclined so as to gradually decrease from the inner peripheral side toward the outer peripheral side is used. However, the annular packing retainer is not limited to this, and the upper end is It may be a flat surface, hemispherical shape, a palm shape having an outer peripheral inclined surface and an inner peripheral inclined surface, or the like. In other words, the shape of the upper end of the annular packing retainer elastically deforms the annular packing 104 so that the annular packing 104 is urged radially outward with respect to the inner peripheral surface of the cylindrical body 101. Anything is acceptable.

[Second Embodiment]
FIG. 16A shows an enlarged cross-sectional view (without the annular packing 104) of the main part corresponding to region B of FIG. 6 of a vertical washer / dryer as an example of the washing machine of the second embodiment of the present invention. 16B is an enlarged cross-sectional view of a state in which the annular packing 104 of the vertical laundry dryer is mounted. The washing / dehydrating tub of the second embodiment has the same configuration as the washing / dehydrating tub 100 of the vertical washer / dryer of the first embodiment except for the bottom flange portion 1102a and the upper end of the annular packing presser 1103. 1 to 4 are used.

  As shown in FIG. 16A, the lower surface of the flange portion 1102a of the bottom portion 1102 of the second embodiment is formed with an inclined surface 1102b inclined so as to gradually become lower from the outer peripheral side toward the inner peripheral side. Note that the lower surface of the flange portion 1102a of the bottom portion 1102 may be curved so as to gradually decrease from the outer peripheral side toward the inner peripheral side. The annular packing retainer 1103 has a flat surface 1103b at the upper end. This annular packing holder 1103 has the same configuration as the annular packing holder 103 of the first embodiment except for the flat surface 1103b at the upper end.

  According to the second embodiment, as shown in FIG. 16B, the lower inclined surface 1102b of the flange portion 1102a of the bottom portion 1102 is inclined so as to gradually become lower from the outer peripheral side toward the inner peripheral side. Thus, when the annular packing 104 is pressed upward by the flat surface 1103b at the upper end of the annular packing retainer 1103, the annular packing 104 is pushed outward in the radial direction by the inclined surface 1102b of the flange portion 1102a. Thereby, the contact pressure of the annular packing 104 to the inner peripheral surface side of the cylindrical body portion 101 is increased, and the inner peripheral surface of the cylindrical body portion 101 can be brought into close contact with the annular packing 104. The watertightness between the inner peripheral surface of the trunk portion 101 and the annular packing 104 can be further improved.

  In the second embodiment, the annular packing retainer 1103 having the flat upper surface 1103b is used. However, the annular packing retainer is not limited to this, and the upper end gradually decreases from the inner peripheral side toward the outer peripheral side. It may be inclined or curved so as to be. In other words, the shape of the upper end of the annular packing retainer elastically deforms the annular packing 104 so that the annular packing 104 is urged radially outward with respect to the inner peripheral surface of the cylindrical body 101. Anything is acceptable.

  The washing / dehydrating tub of the second embodiment has the same effect as the washing / dehydrating tub 100 of the first embodiment.

[Third Embodiment]
The washing and dewatering tub of the third embodiment of the present invention has the same configuration as the washing and dewatering tub 100 of the vertical washer / dryer of the first embodiment except for the positioning portion. Incorporate.

  In the washing and dewatering tub according to the second embodiment, a plurality of lower end portions of the cylindrical body portion 101 protrude above the flange portion 102a of the bottom portion 102 and radially inward from the outer peripheral edge of the flange portion 102a. Positioning portions (not shown) are provided at intervals in the radial direction.

  The washing / dehydrating tub of the third embodiment has the same effect as the washing / dehydrating tub 100 of the first embodiment.

  In the first to third embodiments described above, the vertical washer / dryer provided with a metal cylindrical body portion having a non-perforated peripheral wall has been described. However, the present invention is not limited to this, and a cylinder having a plurality of holes in the peripheral wall. The present invention may be applied to a washing and dewatering tank provided with a cylindrical body and a washing machine equipped with the washing and dewatering tank.

  Moreover, in the said 1st-3rd embodiment, although the vertical type washing-drying machine provided with the washing and dehydration tank was demonstrated, this invention may be applied not only to this but the washing machine which does not have a drying function. .

  Although specific embodiments of the present invention have been described, the present invention is not limited to the first to third embodiments, and various modifications can be made within the scope of the present invention. For example, what combined suitably the content described in the said 1st-3rd embodiment is good also as one Embodiment of this invention.

  The present invention and the embodiment are summarized as follows.

The washing and dewatering tank of this invention is
A metal cylindrical body 101;
Synthetic resin bottoms 102 and 1102 that are disposed on the lower end side of the cylindrical body 101 and form an annular packing holding part H between the inner peripheral surface of the cylindrical body 101;
An annular packing 104 held by the annular packing holding portion H between the inner peripheral surface of the cylindrical body portion 101 and the outer peripheral surfaces of the bottom portions 102 and 1102;
An annular packing retainer 103, 1103 attached to the bottom portions 102, 1102 so as to press the annular packing 104 held by the annular packing holding portion H from below at the upper end;
The upper ends of the annular packing retainers 103 and 1103 press the annular packing 104 so that the annular packing 104 is urged radially outward against the inner peripheral surface of the cylindrical body 101. Further, the annular packing 104 is elastically deformed.

  According to the above configuration, the annular packing 104 held by the annular packing holding portion H between the inner peripheral surface of the cylindrical body 101 and the outer peripheral surfaces of the bottom portions 102 and 1102 is replaced with the annular packing pressers 103 and 1103. The upper end of the cylindrical body 101 is pressed upward and elastically deformed, and the annular packing 104 is urged toward the outer side in the radial direction with respect to the inner peripheral surface of the cylindrical body part 101, whereby the inner peripheral surface of the cylindrical body part 101 is The ring-shaped packing 104 can be brought into intimate contact, and the watertightness between the inner peripheral surface of the cylindrical body 101 and the ring-shaped packing 104 can be improved. In the state where the annular packing 104 is fitted between the inner peripheral surface of the cylindrical body 101 and the outer peripheral surfaces of the bottom portions 102 and 1102 and on the outer peripheral surfaces of the bottom portions 102 and 1102, the annular packing retainers 103 and 1103 are When attaching the annular packing 104 to the annular packing 104 at the upper end, the annular packing 104 can be easily elastically deformed, and watertightness can be secured with good assemblability. Therefore, it is possible to improve the watertightness between the metal cylindrical body 101 and the synthetic resin bottoms 102 and 1102 with a simple configuration.

  In addition, by using the bottoms 102 and 1102 made of synthetic resin, the cost can be reduced and the weight can be reduced. Furthermore, the gap between the stirring blade 20 and the bottom portions 102 and 1102 can be easily optimized so that foreign matter such as coins can be prevented from entering the gap between the stirring blade (pulsator) 20 and the bottom portions 102 and 1102.

Moreover, in the washing and dewatering tank of one embodiment,
The bottom portions 102, 1102 have flange portions 102a, 1102a provided over the entire circumference of the outer peripheral surface,
The annular packing 104 is in contact with the lower surfaces of the flange portions 102a and 1102a.

  According to the above embodiment, when the annular packing 104 is pressed upward at the upper ends of the annular packing retainers 103, 1103, the flange portions 102a, 1102a provided over the entire outer periphery of the bottom portions 102, 1102 are annular. Since the upward movement of the packing 104 in the axial direction is restricted, the annular packing 104 is in close contact with the lower surfaces of the flange portions 102a and 1102a. Thereby, the watertightness between the flange parts 102a and 1102a of the bottom parts 102 and 1102 and the annular packing 104 can be improved.

Moreover, in the washing and dewatering tank of one embodiment,
The lower surface of the flange portion 1102a of the bottom portion 1102 is inclined or curved so as to gradually become lower from the outer peripheral side toward the inner peripheral side.

  According to the above embodiment, the lower surface of the flange portion 1102a of the bottom portion 1102 is inclined (or curved) so as to gradually become lower from the outer peripheral side toward the inner peripheral side, whereby the upper end of the annular packing retainer 1103 Thus, when the annular packing 104 is pressed upward, the annular packing 104 is spread outward in the radial direction by the lower surface of the flange portion 1102a. Thereby, the contact pressure of the annular packing 104 to the inner peripheral surface side of the cylindrical body portion 101 is increased, and the inner peripheral surface of the cylindrical body portion 101 can be brought into close contact with the annular packing 104. The watertightness between the inner peripheral surface of the trunk portion 101 and the annular packing 104 can be further improved.

Moreover, in the washing and dewatering tank of one embodiment,
At the lower end of the cylindrical body 101, there is a positioning part 110 protruding above the flanges 102a, 1102a of the bottoms 102, 1102 and radially inward from the outer peripheral edges of the flanges 102a, 1102a. Is provided.

  According to the above embodiment, the positioning portion 110 provided at the lower end portion of the cylindrical body portion 101 has a diameter higher than the flange portions 102a and 1102a of the bottom portions 102 and 1102 and the outer peripheral edges of the flange portions 102a and 1102a. By projecting inward in the direction, when the bottom portions 102, 1102 are arranged on the lower end side of the cylindrical body portion 101, the upper sides of the flange portions 102 a, 1102 a of the bottom portions 102, 1102 become the positioning portions 110 of the cylindrical body portion 101. The bottom portions 102 and 1102 can be positioned with respect to the cylindrical body 101 by abutting.

  Further, even if the annular packing 104 protrudes upward, it is hidden by the positioning part 110 of the cylindrical body 101 and cannot be seen, so that the aesthetic appearance can be maintained.

Moreover, in the washing and dewatering tank of one embodiment,
The upper end portion of the annular packing retainer 103 is inclined or curved so as to gradually become lower from the inner peripheral side toward the outer peripheral side.

  According to the above-described embodiment, the upper end of the annular packing retainer 103 is inclined or curved so as to gradually decrease from the inner peripheral side toward the outer peripheral side. When the packing 104 is pressed upward, the annular packing 104 is pushed outward in the radial direction. Thereby, the contact pressure of the annular packing 104 to the inner peripheral surface side of the cylindrical body portion 101 is increased, and the inner peripheral surface of the cylindrical body portion 101 can be brought into close contact with the annular packing 104. The watertightness between the inner peripheral surface of the trunk portion 101 and the annular packing 104 can be further improved.

Moreover, in the washing and dewatering tank of one embodiment,
The annular packing retainers 103 and 1103 are attached to the bottom portions 102 and 1102 by screws 121,
By tightening the screw 121, the annular packing 104 is pressed against the inner peripheral surface of the cylindrical body 101 by pressing the annular packing 104 at the upper ends of the annular packing retainers 103, 1103. The annular packing 104 is elastically deformed so as to be urged toward.

  According to the above-described embodiment, the annular packing retainers 103 and 1103 are tightened with the screws 121 for attaching the bottom packings 102 and 1102, and at the same time, the annular packing 104 and the upper end of the annular packing retainers 103 and 1103 are pressed against each other. Since the packing 104 is elastically deformed and the annular packing 104 is urged toward the radially outer side with respect to the inner peripheral surface of the cylindrical body 101, the assemblability is good.

Moreover, in the washing and dewatering tank of one embodiment,
The bottom portions 102 and 1102 are attached to the lower end side of the cylindrical body portion 101 with screws 123 via the annular packing retainers 103 and 1103.

  According to the above embodiment, since the bottom portions 102 and 1102 are attached to the lower end side of the cylindrical body portion 101 by the screws 123 via the annular packing pressers 103 and 1103, the annular portion on the lower end side of the cylindrical body portion 101. The fixing portions of the bottom portions 102, 1102 can be provided in the vicinity of the packing 104, and the annular packing pressers 103, 1103 can also be used for fixing the bottom portions 102, 1102 and the cylindrical body portion 101.

Moreover, in the washing and dewatering tank of one embodiment,
The material of the annular packing retainers 103 and 1103 has higher rigidity than the material of the bottom portions 102 and 1102.

  According to the embodiment, the strength of the bottom portions 102 and 1102 can be improved by using a material having higher rigidity than the material of the bottom portions 102 and 1102 for the annular packing retainer 103.

Moreover, in the washing and dewatering tank of one embodiment,
The cylindrical body portion 101 has a body plate material 101a rounded into a cylindrical shape, and the seam portion of the body plate material is joined by gouge folding except for upper and lower ends,
The upper and lower ends of the joint portion of the tubular body 101 are fastened together with screws by overlapping the overlapped portions of the body plate material 101a.

  According to the above-described embodiment, the upper and lower ends of the joint portion of the cylindrical body portion 101 joined by the goose fold caulking of the body plate material 101a are overlapped by extending the body plate material 101a, and the overlapped portion is screwed. By tightening together, the strength of the joint portion of the cylindrical body 101 can be improved.

In this washing machine,
Any one of the above washing and dewatering tanks is provided.

  According to the above configuration, it is possible to realize a washing machine including a washing and dewatering tub that can improve the water tightness between the metal cylindrical body 101 and the synthetic resin bottoms 102 and 1102 with a simple configuration. A decrease in water-saving performance can be prevented.

DESCRIPTION OF SYMBOLS 1 ... Main body casing 2 ... Water tank 4 ... Top cover 5 ... Operation display part 11 ... Top plate 12 ... Base 20 ... Stirring blade 40 ... Ring balancer 50 ... Drive unit 100 ... Washing and dehydration tank 101 ... Cylindrical trunk part 101a ... Body Plate material 101b, 101c ... Extension piece 102, 1102 ... Bottom part 102a, 1102a ... Flange part 103, 1103 ... Annular packing retainer 103a ... Outer peripheral wall part 103b ... Inclined part 103c ... Annular bottom part 103d ... Inner peripheral wall part 104 ... Annular packing 110 ... Positioning part 111 ... Drainage groove 121,123 ... Screw 122,124 ... Screw hole 1103b ... Flat surface H ... Ring packing holding part

Claims (5)

A metal cylindrical body,
A bottom portion made of a synthetic resin, which is disposed on the lower end side of the cylindrical body portion and forms an annular packing holding portion between the inner peripheral surface of the cylindrical body portion;
An annular packing held by the annular packing holding portion between the inner peripheral surface of the cylindrical body and the outer peripheral surface of the bottom; and
An annular packing presser attached to the bottom so as to press the annular packing held by the annular packing holding part from below with an upper end;
The annular packing is pressed so that the annular packing presses the annular packing so that the annular packing is urged radially outward against the inner peripheral surface of the cylindrical body. Washing and dewatering tub characterized by elastically deforming. In the washing and dewatering tank according to claim 1,
The bottom portion has a flange portion provided over the entire circumference of the outer peripheral surface,
The washing and dewatering tub, wherein the annular packing is in contact with the lower surface of the flange portion. In the washing and dewatering tank according to claim 2,
The lower end portion of the cylindrical body portion is provided with a positioning portion that protrudes above the flange portion of the bottom portion and radially inward from the outer peripheral edge of the flange portion. Dehydration tank. In the washing and dewatering tub according to any one of claims 1 to 3,
A washing and dewatering tub, wherein an upper end of the annular packing presser is inclined or curved so as to gradually become lower from the inner peripheral side toward the outer peripheral side.   A washing machine comprising the washing and dewatering tank according to any one of claims 1 to 4.

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