JP5659842B2 - Drum washing machine - Google Patents

Description

  The present invention relates to a configuration of a side surface of an outer box of a drum type washing machine.

  Conventionally, in this type of drum-type washing machine outer case side surface configuration, in order to reduce vibration during dehydration, etc., it has been proposed to form a plurality of concave constricted portions in a horizontal direction on a thin steel plate by pressing or the like. (For example, see Patent Document 1).

  FIG. 4 shows an external perspective view of a conventional drum type washing machine described in Patent Document 1. As shown in FIG. As shown in FIG. 4, the configuration of the outer box 41 of a substantially vertically long rectangular parallelepiped is composed of an upper face decorative cover 30 on the upper surface, an operation panel 31 having a display and the like on the upper front, and a front decorative cover having a door 32 that can be opened and closed at the front center. 33, a front lower cover 34 is formed below the front surface, and a leg base 35 with a leg portion 39 attached below is formed.

  On the side surface of the outer box 41, the weight of the entire outer box structure is supported together with the leg stand 35 by side plates 36 on the left and right sides of a vertically long and substantially rectangular shape formed of a thin steel plate.

  Since the side plate 36 is formed with a handle portion 38 for carrying the product and a concave portion 40 for attaching a caution seal or the like, the concave diaphragm portion 37 having a longitudinal direction in the horizontal direction on the entire side surface except for the portion. Form multiple lines. The concave diaphragm portion 37 has a surface rigidity of the entire side plate 36 by making the area of the concave diaphragm portion, that is, the area where plastic deformation is performed, larger than the area of the portion where the concave diaphragm portion 37 is not processed. The surface rigidity of the outer casing 41 is reduced by increasing the resonance frequency of the side plate 36 and increasing the resonance frequency away from the vibration frequency during dehydration.

  The concave diaphragm portion 37 is set in the horizontal direction on the entire side plate. This is because the side plate 36 has a substantially rectangular shape in the vertical direction, and the dimension P set as the vertical width of the concave diaphragm portion 37. Is constant, it is possible to configure a large number of concave diaphragm portions 37, so that a large number of concave diaphragm portions 37 are configured to increase the surface rigidity.

JP 2010-63893 A

  However, in the conventional configuration, when the side plate is substantially rectangular in the vertical direction, a large number of concave diaphragm portions can be configured, and in particular, the surface rigidity in the vertical direction can be increased. In the case of a shape close to a square, for example, even if the vertical rigidity can be increased, the vibration applied to the side plate is transmitted from either the horizontal direction or the vertical direction. Was not necessarily sufficient.

  Therefore, the vibration of the side plate increases during dehydration operation, and abnormal noise is generated, and when operating with a strong force especially when closing the front center door, the side plate vibrates and generates abnormal noise. There was a problem.

  The present invention solves the above-mentioned conventional problems, and even if vibration applied to the side plate is transmitted from either the horizontal direction or the upper and lower directions, the surface rigidity of the side plate is increased and vibration and abnormal noise are generated. The purpose is to reduce.

  In order to solve the above-mentioned conventional problems, the drum type washing machine of the present invention comprises left and right side plates formed of steel plates that constitute the side portion of the outer box, and the front portion of the outer box at the substantially front center. A front cover provided with doors that can be opened and closed, an upper surface cover that constitutes the upper surface of the outer box, a water tank that rotatably supports a rotating drum inside the outer box, and a drooping prevention mechanism that allows the water tank to swing freely The suspension includes a suspension for vibration support, a damping damper that attenuates vibration of the water tank from an outer box bottom plate, and a door packing that is watertightly fixed to the front cover on the door side of the water tank. A plurality of concave diaphragm portions are formed, and the concave diaphragm portions have an arc shape with a larger curvature as it approaches the front surface on the door side, and an arc shape with a curvature that decreases toward the rear.

  Thereby, the surface rigidity of the side plate corresponding to the behavior of the water tank in all directions during the dehydration operation can be secured, and low vibration and noise can be achieved.

  Since the drum type washing machine of the present invention can increase the surface rigidity corresponding to any shape of the side plate, low vibration and low noise can be achieved by reducing the vibration of the outer box during high-speed dewatering. it can.

1 is an external perspective view of a drum-type washing machine according to Embodiment 1 of the present invention. Longitudinal sectional view of the drum type washing machine viewed from the side Front view of side plate of drum-type washing machine External perspective view of a conventional drum type washing machine

  The first invention comprises left and right side plates that are formed of a steel plate that constitutes a side portion of the outer box, a front cover that constitutes the front portion of the outer box and that is provided with a door that can be opened and closed substantially at the center of the front surface, A top cover that constitutes the top surface of the box, a water tank that rotatably supports a rotating drum inside the outer box, a suspension that supports the water tank in a swingable manner, and a suspension plate that supports the water tank in a swingable manner. A damping damper that damps vibration; and a door packing that is watertightly fixed to the front cover on the door side of the water tank, and the left and right side plates form a plurality of concave throttle portions, and the concave throttle portions The surface rigidity of the side plate that corresponds to the behavior of the water tank in all directions during dehydration operation by adopting an arc shape with a larger curvature closer to the front side that is the door side and a curvature that decreases toward the rear Can ensure low vibration And low noise is achieved.

  In the second invention, the concave diaphragm portion closest to the front surface on the door side has a substantially semicircular shape, so that vibration is transmitted from the side plate via the door packing in the vicinity of the door during the dehydration operation. Since strong surface rigidity is obtained by the fan-shaped concave diaphragm portion against vibration, vibration transmission to the entire side plate is reduced, and vibration of the entire product can be suppressed. In addition, when the door is closed with a strong force from the open state, when the impact is transmitted to the left and right side plates via the door packing and front cover, Due to the strong surface rigidity, the echo sound of the entire side plate is reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Further, the present invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is an external perspective view of the drum type washing machine according to the first embodiment of the present invention. FIG. 2 is a longitudinal sectional view of the drum type washing machine as viewed from the side. These show the front view of the side version of the drum type washing machine.

  In FIG. 1, the structure of the substantially cubic outer box 1 consists of a top decorative cover (top cover) 2 on the upper surface, an operation panel 3 with a display on the upper front, a front decorative cover having a door 4 that can be opened and closed at the front center. (Front cover) 5, a front lower cover 6 is formed below the front surface, and a leg portion 7 is formed below.

  On the side surface of the outer box 1 is a substantially square or rectangular side plate 8 formed of a thin steel plate (FIG. 1 shows the right side plate, and the left side plate exists on the opposite side in a symmetrical manner). Supports the weight of the construction together with the legs 7.

  The side plate 8 is formed with a plurality of concave diaphragm portions 9 having different curvatures in the planar shape from the front side which is the door 4 side toward the rear. The concave diaphragm portion 9 formed on the side plate increases the surface rigidity of the side plate 8 of the thin steel plate, and the door 4 is closed with a strong operation force and the vibration and noise of the side plate 8 during the dehydration operation of the product. This reduces the reverberation sound of the side plate 8 at the time.

  The vibration acting on the side plate will be described with reference to the longitudinal sectional view of FIG.

  A rotating drum 11 that is rotationally driven by a motor 10 is rotatably supported in the water tank 12 inside the outer box 1. The upper part of the water tank 12 is supported by the suspension 13 so that the upper part of the water tank 12 can swing freely. The lower part of the water tank 12 is damped and supported by the damping damper 14 so as to reduce the vibration amplitude. .

  Further, the front door 4 side of the water tank 12 is watertightly fixed to the front decorative cover 5 with a door packing 17 made of a flexible material such as rubber that comes in watertight contact with the inner glass 16 when the door 4 is closed. Yes.

  When the aquarium 12 is rotated at a high speed particularly during a dehydrating operation, the laundry garment 18 has a wide variety of distributions inside the rotating drum 11, so that the behavior of the aquarium 12 causes complicated movements such as up and down, left and right, and front and rear.

  Therefore, the vibration transmitted from the suspension 13 and the damping damper 14 to the side plate 8 (not shown in FIG. 2) via the top decorative cover 2 and the bottom plate 15 is mainly composed of vertical waves, while the water tank 12. Is transmitted from the door packing 17 to the side plate 8 (not shown in FIG. 2) via the front decorative cover 5.

  Therefore, the rigidity of the side plate 8 is mainly the vertical vibration transmitted from the suspension 13 and the damping damper 14 to the side plate 8 via the top decorative cover 2 and the bottom plate 15, and the front packing 17 from the door packing 17 part. Therefore, it is necessary to have surface rigidity corresponding to the horizontal vibration transmitted from the front side of the door 4 to the side plate 8 via 5 and the horizontal impact when the door is opened and closed.

  In particular, when the shape of the side plate is not a vertically long and roughly rectangular shape whose vertical dimension is significantly greater than that of the front and rear, but a shape close to a rectangle or square whose front and rear and vertical dimensions are approximated, the rigidity of the side plate is determined in the vertical and longitudinal directions. Similar surface rigidity is particularly required.

  In the front view of the side plate in FIG. 3, the concave diaphragm portion 9 of the side plate 8 has a substantially semicircular (substantially semi-elliptical) concave diaphragm portion 9 a on the foremost side of the door 4, and a substantially arc-shaped curvature from the front side of the door 4. 9c, 9d, and 9e are formed in a shape in which the curvature is gradually changed from the concave diaphragm portion 9b having a large diameter toward the rear. In addition, the “concave” of the concave diaphragm portion 9 has a “concave” shape from the outside of the outer box 1 toward the inside of the outer box 1.

  The curvature is set by a catenary curve, and in FIG. 3, a substantially semicircular concave throttle portion 9a is formed at a position closest to the door 4 side. Is increasing.

  On the other hand, the planar shape of the concave diaphragm 9e at the right end in FIG. 3 farthest from the door 4 side is configured as an arc-shaped catenary curve having a small curvature approximating a substantially vertical shape, and the upper and lower ends A are the upper and lower angles of the side plate. It is formed so as to be close to the corner portion 19, and the area of the concave diaphragm portion is made as wide as possible.

  When the thickness of the side plate 8 made of a steel plate is 0.6 mm, the concave drawn portion 9 is plastically deformed by drawing to a depth of 2.0 to 4.0 mm by pressing or the like. The surface rigidity of the side plate is increased.

  In addition, it is preferable that the vertical centers of the concave diaphragm portions 9 b, 9 c, 9 d, and 9 e lie on the center of the door 4 and the rotation axis of the rotary drum 11.

  About the washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated.

  In recent years, the drum type washing machine has a great water-saving effect, so that the demand for the drum-type washing machine has been increased and the development of products for increasing the washable clothes capacity has been advanced. As the countermeasure, the countermeasure is advanced by increasing the length (depth) of the rotating drum 11 in the rotation axis direction shown in FIG. Therefore, as the capacity increases, the depth of the product itself increases, and the side plate 8 has conventionally had a vertically long rectangular shape, but in recent years, a rectangular shape that approximates the front and rear and vertical dimensions, or a shape that is close to a square shape. Is increasing.

  Under such circumstances, the side plate of the present application is mainly driven by the vertical vibration transmitted from the suspension 13 and the damping damper 14 to the side plate 8 via the top decorative cover 2 and the bottom plate 15, and from the door packing 17. A uniform vertical squeezing part or a squeezing squeezing part only in the horizontal direction so as to correspond to two directions of horizontal vibration transmitted from the front side of the door 4 to the side plate 8 via the decorative cover 5 In addition to ensuring the surface rigidity, a complicated plurality of circular arc concave diaphragm portions are configured, and the surface rigidity in the vertical and horizontal directions is enhanced by each arc.

  In particular, during the dehydrating operation, strong surface rigidity is obtained by the substantially semicircular concave throttle portion 9a against vibration transmitted from the B direction (FIG. 3) to the side plate 8 via the door packing 17 near the door 4. Therefore, vibration transmission to the entire side plate 8 is reduced, and vibration of the entire product can be suppressed.

  Further, when the door 4 is closed with a strong force from the released state, the impact is transmitted to the left and right side plates via the door packing 17 and the front decorative cover 5 as in the dehydration operation. Due to the strong surface rigidity of the semicircular concave diaphragm 9a, the reverberant sound of the entire side plate 8 is reduced.

  As described above, the drum type washing machine according to the present invention can reduce the vibration of the outer box during dehydration and the abnormal noise when opening and closing the door by increasing the surface rigidity of the side plate, particularly the vicinity of the front door. It can also be applied to other products with vibration and having an open / close door, such as a dehydrator.

1 Outer box 2 Top face cosmetic cover (top face cover)
4 Door 5 Front decorative cover (front cover)
8 Side plate 9 Recessed diaphragm 11 Rotating drum 12 Water tank 13 Suspension 14 Damping damper 17 Door packing

Claims (2)

The left and right side plates that are formed of steel plates that constitute the side portion of the outer box, the front cover that constitutes the front portion of the outer box and that is provided with a door that can be opened and closed substantially at the center of the front surface, and the upper surface of the outer box An upper surface cover, a water tank that rotatably supports a rotating drum inside the outer box, a suspension that supports the water tank in a swinging manner so as to swing freely, and a damping damper that attenuates vibrations of the water tank from an outer box bottom plate And a door packing that is watertightly fixed to the front cover on the door side of the water tank, the left and right side plates form a plurality of concave throttle portions, and the concave throttle portions are arranged on the door side. A drum-type washing machine having an arc shape with a larger curvature as it is closer to a certain front surface, and an arc shape with a smaller curvature toward the rear. The drum-type washing machine according to claim 1, wherein the concave throttle portion closest to the front surface on the door side has a substantially semicircular shape.

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