JP5411314B2 - Washing machine and washing and drying machine - Google Patents

Description

  The present invention relates to a drum-type washing machine and a washing / drying machine, and more particularly to increasing the washing capacity of a washing inner tub.

  The drum-type washing and drying machine has a configuration as shown in, for example, Japanese Patent Application Laid-Open No. 2008-125804 (Patent Document 1).

  This washing and drying machine includes a washing inner tub for storing laundry, an outer tub for storing wash water when a rotatable washing tub is installed, a drive motor for rotating the washing tub, and an outer tub. It has an anti-vibration mechanism for supporting anti-vibration.

  The washing tub has a cylindrical body, a rear bottom plate on the rear end side of the body, a front reinforcing ring provided on the front end side of the body, an annular balance ring supported by the front reinforcing ring, and the like.

JP 2008-125804 A

  In order to increase the washing capacity, it is necessary to enlarge the washing tub. As described above, the washing tub is composed of the body, the rear bottom plate, the front reinforcing ring, and the components of the annular balance ring. Therefore, in order to increase the washing capacity, these components must be changed. . Since it is necessary to enlarge the outer tub, the manufacturing equipment for making the components and the outer tub becomes a significant change.

  In view of the above-described problems, an object of the present invention is to provide a washing machine and a washing / drying machine capable of increasing the washing capacity without significantly changing the manufacturing equipment.

  The present invention comprises a rotating washing inner tub, an outer tub in which the washing inner tub is placed and for storing washing water, the washing inner tub having a cylindrical body formed of a steel plate including a stainless steel plate, and the body In a washing machine or a washing / drying machine having a rear bottom plate formed of a steel plate including a stainless steel plate provided on the rear side end side and an annular balance ring provided on the front side end side of the body, the body is the rear side A small-diameter portion having a small diameter on the end side and the front-side end side, and a large-diameter portion formed larger in diameter than the small-diameter portion in an intermediate portion existing between the small-diameter portions. To do.

  According to the present invention, the other components are changed by providing the body with a large-diameter portion formed larger in diameter than the small-diameter portion over the entire intermediate range excluding the small-diameter portions on both ends. Therefore, the washing capacity can be increased, and a significant change in manufacturing equipment can be avoided.

1 is an external perspective view of a washing / drying machine according to an embodiment of the present invention. FIG. 4 is a longitudinal sectional view of a washing / drying machine according to an embodiment of the present invention. FIG. 6 is a view showing a washing / drying main unit including an inner tub, an outer tub for storing washing water, a drive motor, and an anti-vibration support mechanism, excluding an outer frame, according to an embodiment of the present invention. It is a figure which concerns on the Example of this invention, and was the figure which expanded and showed the arrangement | positioning relationship with the outer tank which stores a washing inner tank and wash water. It is an external appearance perspective view which concerns on the Example of this invention and showed the inner tub for washing | cleaning alone. FIG. 4 is a cutaway perspective view of the inner tub as viewed from the front side according to the embodiment of the present invention. FIG. 4 is a cutaway perspective view of the inner tub, as viewed from the rear, according to the embodiment of the present invention. FIG. 8 is a partially enlarged perspective view of FIG. 7 according to the embodiment of the present invention.

  An example of the embodiment of the present invention will be described with reference to the drawings.

  First, the outline of the washing / drying machine will be described with reference to FIGS. 1, 2, and 3.

  The outer frame 1 has a door 2 on the front side. The door 2 is opened and closed, and the laundry is put in and out. A washing / drying main unit 3 is provided in the outer frame 1. The washing / drying main body unit 3 includes a washing inner tub 4, an outer tub 5 for storing washing water, a drive motor 6, a vibration isolation support mechanism 7, a blower mechanism 8, a blower circulation duct 9, and a blower heating unit 10. The laundry 20 is washed in the inner tub 21 and dried by the circulation circulation air indicated by arrows 22 and 23.

  The inner tub 4 and the outer tub 5 for storing washing water will be described in detail with reference to FIGS.

  The inner washing tub 4 includes a body 30, a rear bottom plate 31, a front reinforcing ring 32, and an annular balance ring 33. The body 30 is formed by bending a stainless steel plate into a cylindrical shape. The rear bottom plate 31 provided on the rear end side of the body 30 is formed of a stainless steel plate. The front reinforcing ring 32 is also formed of a stainless steel plate.

  The annular balance ring 33 is a fluid balancer made of synthetic resin, and has five fluid chambers 33a, 33b, 33c, 33d, and 33e.

  As shown in FIG. 4, the outer tub 5 includes a body cylinder portion 35 formed of a synthetic resin, a bottom portion 36, and a front side portion 37. The body cylinder part 35 and the bottom part 36 are integrally formed. The cylinder part 38 of the front side part 37 and the front side end of the body cylinder part 35 are connected by fitting.

  The bearing frame base 40 has a bearing portion 41 at the center. The bearing portion 41 includes a ball bearing 42. The bearing frame base 40 is attached to the bottom 36 of the outer tub 5. The rotating shaft 43 of the laundry inner tub 4 is rotatably supported by the ball bearing 42.

  As shown in FIGS. 4 and 6 to 8, the inner washing tub 4 has a support base 44 that supports the inner washing tub 4 outside the rear bottom plate 31. The support base 44 is formed by aluminum die casting and has a plurality of support arms 45 extending radially. The rotating shaft 43 is fixed to the center of the support base 44.

  The rear bottom plate 31 is generally flat, but a portion of the support base 44 that faces the support arm 45 is a raised portion 46 that protrudes inward (in the front direction of the laundry tub 4). A lifter 47 is provided on the inner periphery of the body 30 so as to align with the raised portion 46. The raised portion 46 has the same function as the lifter 47.

  The body 30 has a small diameter portion 50, 51 provided on the front end side and the rear end side, and the small diameter portion 50, over the entire intermediate range excluding the small diameter portion on both ends. The large-diameter portion 52 is formed to have a larger diameter than 51. The diameter D1 of the small diameter portions 50 and 51 is 600 mm. The diameter D2 of the large diameter portion 52 is 610 mm. By increasing the diameter of the body 30 of the washing inner tub 4 by providing the large diameter portion 52, the washing capacity is increased.

  In this washing capacity increase, except for the body 30, various components including the rear bottom plate 31, the front reinforcing ring 32, the annular balance ring 33, and the outer tub 5 are the same size as the members that do not increase the washing capacity. It is. For this reason, except for the manufacturing equipment (for example, a mold for molding) related to the body 30, the manufacturing equipment before increasing the washing capacity can be used, and the manufacturing equipment does not need to be significantly changed or newly installed.

  The body 30 of the washing inner tub 4 has an inclined portion 53 that drops and inclines in the outer peripheral direction at a portion where the small diameter portions 50 and 51 shift to the large diameter portion 52. The inclined portion 53 increases the rigidity of the body 30. Withstands high-speed dewatering rotation of 1700 RPM at the top, compared to a flat laundry tub with no slope.

  The small diameter portion 50 on the front end side has a length in which the rotational axis direction width L1 matches the height of the outer peripheral side of the balance ring 33. The small diameter portion 51 on the rear end side requires at least the rotation axis direction width L2. The rotation axis direction width L2 is a length corresponding to the height of the support arm 45 in the rotation axis direction. For this reason, the width of the small diameter portion 51 on the rear end side shown in FIG. 4 and the like is the rotation axis direction width L2 + α.

  Therefore, the length in the rotation axis direction of the large-diameter portion 52 existing so as to occupy the range of the intermediate portion of the body 30 approximates the length obtained by removing the rotation axis direction widths L1 and L2 from the entire length of the body 30.

  The smaller diameter parts 50 and 51 have a smaller rotational axis direction width L1 and L2 to increase the washing capacity, but are necessary for mounting and coupling the balance ring 33 and the support arm 45. The rotation axis direction widths L1 and L2 are necessary in order to secure sufficient attachment and coupling strength with the balance ring 33 and the support arm 45.

  Further, at the small diameter portion 50 on the front end side, the front reinforcing ring 32 is fitted to the outer peripheral side of the front reinforcing ring 32 and the inner peripheral side of the small diameter portion 50 over the range of the rotation axis direction width L1. Therefore, the front end side of the body 30 is strong.

  At the small diameter portion 51 on the rear end side, the outer peripheral side of the rear bottom plate 31 and the inner peripheral side of the small diameter portion 51 are fitted in a part of the range of the rotational axis direction width L2, and are folded. It stays in the range of the caulking part. Only the portion where the tip of the support arm 45 opposes fits the outer peripheral side of the rear bottom plate 31 and the inner peripheral side of the small diameter portion 51 over the range of the rotational axis direction width L2.

  Thus, the volume reduction of the washing inner tub 4 can be suppressed by bringing the bottom surface of the rear bottom plate 31 closer to the rear end side of the small diameter portion 51.

  The production of the washing tub 4 will be described.

  The body 30 is formed by bending a belt-shaped stainless steel plate into a cylindrical shape and welding the joining portions at both ends. The welded portion is formed along the direction of the rotational axis of the body 30. Thereafter, the small diameter portion 50 on the front end side and the small diameter portion 51 on the rear end side are formed by drawing. The small-diameter portions 50 and 51 are formed by drawing processing that narrows in the inner diameter direction.

  The above drawing can be performed by the reverse drawing. It is also possible to weld the mating portions and bulge the intermediate portion of the body 30 to the outer peripheral side to form the large diameter portion.

  A rear bottom plate 31 and a front reinforcing ring 32 are attached and coupled to the body 30 formed by drawing. The rear bottom plate 31 is coupled to the small-diameter portion 51 and the front reinforcing ring 32 is coupled to the small-diameter portion 50 by folding. By attaching and connecting the rear bottom plate 31 and the front reinforcing ring 32, the body 30 has a strong structure that does not deform.

  A balance ring 33 is fitted into the front reinforcing ring 32, and the balance ring 33 is fastened to the front end side of the body 30 by a screw 60 that is screwed from the outer peripheral side of the small diameter portion 50. When the front reinforcing ring 32 is not provided, the balance ring 33 is directly coupled to the body 30. In this case, in order to increase the rigidity of the front end side of the body 30, it is desirable to use a balance ring having particularly high rigidity.

  A support base 44 is attached to the rear bottom plate 31. The support base 44 disposed outside the rear bottom plate 31 is placed so that the tip of the support arm 45 faces the inner peripheral side of the small diameter portion 51. The support arm 45 and the body 30 are fastened by a screw 61 fastened to the tip of the support arm 45 from the outer peripheral side of the small diameter portion 51 of the body 30. The rear bottom plate 31 is also fastened to the support arm 45 together by screws 61.

  The washing tub 4 supported by the support base 44 is fastened to the tip of the support arm 45 provided on the support base 44 by the screw 61, so that a strong support structure is obtained.

  The head of the screw 61 protrudes from the outer peripheral surface of the small diameter portion 51 of the body 30. The protruding position of the head and the outer periphery of the large diameter portion 52 were made substantially flush. A gap G between the head of the screw 61 and the outer tub 5 is 4 to 5 mm. Since a gap G (4 to 5 mm) necessary for the rotation of the washing inner tub 4 is secured between the outer periphery of the large diameter portion 52 and the outer tub 5, the washing inner tub 4 can be rotated without any trouble.

  In this way, the diameter of the large diameter portion 52, which increases in diameter, is kept approximately flush with the protruding position of the head of the screw 61, so that the laundry inner tub 4 is enlarged in diameter and the washing capacity is increased. The outer tub 5 has a size that can be shared with the outer tub before the washing capacity is increased. For this reason, the drastic change of the manufacturing equipment which manufactures the outer tank 5 and the new installation of an installation are not required.

  The dewatering hole 63 is provided in the large diameter portion 52 and is not provided in the small diameter portions 50 and 51. In the small diameter portions 50 and 51, the dewatering holes 63 are not provided because they are blocked by the front reinforcing ring 32, the rear bottom plate 31, and the balance ring 33. However, since the large-diameter portion 52 exists in the intermediate portion between the small-diameter portions 50 and 51, the remaining water does not stay in the small-diameter portions 50 and 51, and the laundry 20 is discharged from the dewatering holes 63 of the large-diameter portion 52. The water contained in the water and the water in the washing tub 4 can be dehydrated.

  Further, since the dewatering hole 63 is provided in the large diameter portion 52 where the centrifugal action increases, dewatering is performed well.

  The dewatering hole 64 is also provided in the rear bottom plate 31. The dewatering hole 64 is not subjected to centrifugal dewatering but is used for natural drainage in the washing tub 4 and ventilation of dry air.

  The small diameter portions 50 and 51 have the same diameter. Although it is possible to make the small diameter portions 50 and 51 have different diameters, the advantage that the structural members including the front reinforcing ring 32 and the rear bottom plate 31 can be shared is lost, so the small diameter portions 50 and 51 are the same. It is desirable to use a diameter.

  The inclined portion 53 can fall substantially at a right angle without being inclined. However, in the drawing process for constricting the small diameter parts 50 and 51 and the drawing process for expanding the large diameter part 52 to the outer peripheral side, the formability is better and the finish and the surface are better than the right angle. .

  4 ... Washing inner tub, 5 ... Outer tub, 52 ... Body, 33 ... Rear side bottom plate, 33 ... Balance ring, 32 ... Front side reinforcing ring, 50 ... Small diameter part, 51 ... Small diameter part.

Claims (5)

A rotating inner washing tub, and an inner tub for storing washing water,
The washing tub has a body that forms a steel plate including a stainless steel plate in a cylindrical shape, a rear bottom plate that is formed of a steel plate that includes a stainless steel plate provided on a rear end side of the body, and a front end side of the body. In a washing machine or a washing dryer having an annular balance ring to be provided,
The body is smaller in diameter than the small diameter portion at a small diameter portion in which the rear side end side and the front side end side are reduced in diameter, and an intermediate portion existing between the rear side end side and the both small diameter portions. While having a large-diameter portion formed large, the large-diameter portion is formed by drawing processing to bulge to the outer peripheral side ,
The washing tub has a support base that supports the washing tub on the outside on the rear bottom plate side,
The support base has a plurality of radial support arms;
Fastened to the tip of the support arm with a screw that screws the body and the rear bottom plate from the outer periphery of the body,
A washing machine or a washing and drying machine , wherein a protruding position at which the head of the screw protrudes from an outer peripheral surface of the small-diameter portion of the body and an outer periphery of the large-diameter portion are substantially flush . A rotating inner washing tub, and an inner tub for storing washing water,
The washing tub has a body that forms a steel plate including a stainless steel plate in a cylindrical shape, a rear bottom plate that is formed of a steel plate that includes a stainless steel plate provided on a rear end side of the body, and a front end side of the body. In a washing machine or a washing dryer having an annular balance ring to be provided,
The fuselage is formed to have a diameter smaller than the small diameter part over the entire intermediate range excluding the small diameter part where the rear side end side and the front side end side are small in diameter and the small diameter part on both ends. The large diameter portion is formed by drawing processing that bulges to the outer peripheral side ,
The washing tub has a support base that supports the washing tub on the outside on the rear bottom plate side,
The support base has a plurality of radial support arms;
Fastened to the tip of the support arm with a screw that screws the body and the rear bottom plate from the outer periphery of the body,
A washing machine or a washing and drying machine , wherein a protruding position at which the head of the screw protrudes from an outer peripheral surface of the small-diameter portion of the body and an outer periphery of the large-diameter portion are substantially flush . In the washing machine or the washing dryer according to claim 1 or 2,
A washing machine or a washing and drying machine, wherein the strip-shaped steel sheet is bent into a cylindrical shape and the joining portions at both ends are welded and then the drawing is performed. A rotating inner washing tub, and an inner tub for storing washing water,
The washing tub includes a body formed by bending a steel plate including a stainless steel plate into a cylindrical shape, a rear bottom plate formed of a steel plate including a stainless steel plate provided on a rear end side of the body, and a front end of the body. In a washing machine or a washing dryer having a front reinforcing ring formed of a steel plate including a stainless steel plate provided on the side, and an annular balance ring supported by the front reinforcing ring,
The body has a small diameter portion with a small diameter at the rear side end side and the front side end side, and a large diameter portion in which an intermediate range excluding the small diameter portion at both ends is larger than the small diameter portion. And the large diameter portion is formed by drawing to bulge to the outer peripheral side ,
The washing tub has a support base that supports the washing tub on the outside on the rear bottom plate side,
The support base has a plurality of radial support arms;
Fastened to the tip of the support arm with a screw that screws the body and the rear bottom plate from the outer periphery of the body,
A washing machine or a washing and drying machine , wherein a protruding position at which the head of the screw protrudes from an outer peripheral surface of the small-diameter portion of the body and an outer periphery of the large-diameter portion are substantially flush . A rotating inner washing tub, and an inner tub for storing washing water,
The washing tub has a body that forms a steel plate including a stainless steel plate in a cylindrical shape, a rear bottom plate that is formed of a steel plate that includes a stainless steel plate provided on a rear end side of the body, and a front end side of the body. In a washing machine or a washing dryer having an annular balance ring to be provided ,
The body is smaller in diameter than the small diameter portion at a small diameter portion in which the rear side end side and the front side end side are reduced in diameter, and an intermediate portion existing between the rear side end side and the both small diameter portions. While having a large-diameter portion formed large, the small-diameter portion is formed by a drawing process for constricting in the inner diameter direction,
The washing tub has a support base that supports the washing tub on the outside on the rear bottom plate side,
The support base has a plurality of radial support arms;
Fastened to the tip of the support arm with a screw that screws the body and the rear bottom plate from the outer periphery of the body,
A washing machine or a washing and drying machine , wherein a protruding position at which the head of the screw protrudes from an outer peripheral surface of the small-diameter portion of the body and an outer periphery of the large-diameter portion are substantially flush .

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