TWI421388B - Drum washing machine - Google Patents

Description

Drum washing machine

The present invention relates to a detergency in lifting a washing machine in a drum type washing machine.

The drum type washing machine has a configuration as shown in Japanese Laid-Open Patent Publication No. 2008-125804 (Patent Document 1).

The drum type washing machine includes a rotary drum that stores a washing object, a groove that stores a washing water at a freely rotatable rotating drum, a drive motor that rotationally drives the washing inner groove, and an anti-vibration mechanism that a vibration-proof supporting outer groove.

The rotary drum has a cylindrical body, a bottom wall on the rear end side of the body, a front side reinforcing ring provided on the front side end side of the body, and an annular fluid balancer supported on the front side reinforcing ring.

In the drum type washing machine shown in Japanese Laid-Open Patent Publication No. 2005-334565 (Patent Document 2), in order to reduce cleaning unevenness, a lifter for lifting the laundry is disposed at equal intervals on the inner circumference of the rotary drum. And a lifter having a length lower than the height of the lifter is provided between the lifters.

In the drum type washing machine shown in Japanese Laid-Open Patent Publication No. 2005-253567 (Patent Document 3), a rotating member is provided on the bottom surface of the rotating drum so that the washings are not concentrated on one side and can be sufficiently stirred. The member is provided with a plurality of protrusions.

[Previous Technical Literature]

[Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2008-125804

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2005-334565

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2005-253567

In the case where the drum type washing machine is washed and adhered to the clothes, the mechanical force is applied to the clothes to perform the washing method by mechanical force, so the washing condition is affected by the inner diameter of the rotating drum. Great impact.

That is, in the case of a drum type washing machine, the clothes are provided with a plurality of lifters on the inner side of the rotary drum, and the clothes are sorted from the maximum height of the inner diameter of the rotary drum by the rotation of the rotary drum, and the mechanical force is applied. In order to effectively remove the dirt of the clothes, the inner diameter of the rotating drum must be increased.

However, when the inner diameter of the rotary drum is increased, the main body of the washing machine is inevitably enlarged, and there is a problem that it is difficult to set the general house.

Therefore, it is required to remove the dirt adhering to the clothes without increasing the inner diameter of the rotating drum, and it is also possible to reduce the mechanical force of the uneven washing to the clothes.

SUMMARY OF THE INVENTION The object of the present invention is to reduce the unevenness of cleaning of the laundry stains or to improve the cleaning power without increasing the inner diameter of the rotating drum.

In order to achieve the above object, the present invention relates to a drum type washing machine comprising: a rotary drum for storing clothes; a plurality of lifters provided on an inner circumferential surface of the rotary drum; and the rotary drum being housed and disposed on the same core as the rotary drum a drum for storing the water for washing; a motor for driving the rotating drum; and a drum type washing machine for supporting the frame of the rotating drum, wherein a bottom wall of the rotating drum connecting the rotating shaft of the rotating drum has a central portion A plurality of ridges extending radially, and having a plurality of convex protrusions on a flat portion of the bottom wall.

According to the present invention, when the rotary drum rotates, the clothing that is lifted by the lifter is lifted while being engaged with the projection of the bottom wall, and is also dropped while being folded with the projection of the bottom wall. . Thereby, not only the rinsing effect achieved by falling, but also the rinsing effect can be obtained, and the effect of removing the dirt of the clothes can be improved.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

(Example 1)

Fig. 1 is an external view of a drum type washing and drying machine according to an embodiment of the present invention. Fig. 2 is a side view showing the internal structure, and Fig. 3 is a view showing the internal structure, showing a washing and drying main unit including a washing and dewatering tank, an outer tank, and a motor.

1 is a frame that constitutes the outer contour. The casing 1 is mounted on the base 1h, and is composed of a left side plate 1a, a right side plate (not shown), a front cover member 1c, a rear cover member 1d, an upper cover member 1e, and a lower front cover member 1f. The left and right side panels 1a, 1b are utilized The upper reinforcing material (not shown), the front reinforcing material (not shown), and the rear reinforcing material (not shown) are joined to each other, and the casing 1 is formed in a box shape, and the casing 1 is formed as a casing. Full strength.

9 is a door sill which is provided at the substantially center of the front cover member 1c for taking out the input port of the garment, and is slidably supported by the hinge provided on the front reinforcing member. By pressing the sill open button 9d, the lock mechanism (not shown) is disengaged to open the sill, and the sill is closed by pressing the sill toward the front cover 1c. The front reinforcing material has a circular opening for taking out the clothing, so as to be concentric with the opening of the outer tank to be described later.

6 is an operation panel provided at the center of the upper portion of the casing 1, and includes a power switch 39, a start switch 12, an operation button switch 13, and a display 14. The operation panel 6 is electrically connected to a control device 38 provided at a lower portion of the casing 1.

3 is a cylindrical washing and dewatering tank (rotary drum) rotatably supported, and has a plurality of through holes for water and ventilation in the cylindrical outer peripheral wall 3d, and is provided at the front end surface for taking out It is placed in the opening 3a of the clothing. A fluid balancer 3c integrated with the washing and dewatering tank 3 is provided outside the opening 3a. In the bottom wall 3e of the washing and dewatering tank 3, a plurality of radial ridges 3f extending from the center toward the outer edge portion are formed. A plurality of lifters 3b extending in the axial direction are provided on the inner side of the outer peripheral wall 3d. The rotation center axis of the washing and dewatering tank 3 is inclined so as to be horizontal or to increase the height of the opening 3a side.

2 is a cylindrical outer tank, and includes a washing and dewatering tank 3 coaxially, and has an opening at the front, and a motor 4 is attached to the outer center of the rear end surface. The rotating shaft of the motor 4 penetrates the outer tub 2 and is coupled to the center of the bottom wall 3e of the washing and dewatering tank 3. The outer tank cover member 2d is provided in the front opening portion, and water storage in the outer tank can be performed. In the center of the front side of the outer tank cover member 2d, there is provided an opening portion 2c for taking out the clothes. The opening 2c and the opening provided in the front reinforcing member (not shown) are connected by a rubber expandable body 10, and the outer groove 2 is water-sealed by closing the sill 9. A drain port 2b is provided at the lowermost portion of the bottom surface of the outer tub 2, and the drain pipe 26 is connected. A drain valve (not shown) is provided in the middle of the drain pipe 26, and the water is stored in the outer tank 2 by closing the drain valve and supplying water, and the drain valve is opened to discharge the water in the outer tank 2 to the outside of the machine.

The outer tub 2 is shock-proof supported by a shock absorbing suspension 5 (consisting of a coil spring and a damper) that fixes the lower side to the base 1h. Further, the upper side of the outer tub 2 is supported by an auxiliary spring (not shown) attached to the upper reinforcing member to prevent the front groove 2 from falling in the front-rear direction.

Fig. 4 is a longitudinal sectional view showing the bottom wall 3e of the washing and dewatering tank 3.

When the washing and dewatering tank 3 is rotated during washing and drying, the clothes are repeatedly lifted by the lifter 3b and the centrifugal force along the outer peripheral wall 3d, and are dropped by gravity.

The clothing type lifted by the lifter 3b is coupled to the projection 30 provided on the flat portion of the bottom wall 3e (arrow 20). Further, it also falls while being dropped with the projections 30 of the bottom wall 3e (arrow 21). By repeating such an action, not only the rinsing effect achieved by dropping, but also the rinsing effect can be obtained, and the effect of removing the dirt of the clothes can be improved. In addition, in the washing, since the rotating drum repeatedly rotates forward and backward, not only the rinsing effect achieved by the falling, but also the rinsing effect can be obtained, and the effect of removing dirt from the clothes can be improved.

Fig. 5 is a view showing an example of the shape of the protrusion of the bottom wall 3e of the washing and dewatering tank 3 of the first embodiment, and the cross-sectional view of the A-A shows the cross-sectional shape of the protrusion. In the present embodiment, a projection 30a having a convex shape formed as a quadrangular pyramid is characterized, and a plurality of projections are arranged in the bottom wall 3e. The length of one side of the base of the quadrangular pyramid is 17 mm, and the height H1 is 4 mm.

Although the height H1 of the protrusion 30a is higher, the cleaning effect is improved. However, since the bottom wall 3e is formed by the stainless steel sheet stretching process having a thickness of 0.6 mm, it is possible to process the stainless steel sheet without being formed. The optimum size for extension processing in case of bad conditions. In addition, since a large stamping model is not required, a large change in manufacturing equipment and equipment investment are not required. For other embodiments to be described later, the optimum size is determined for the same reason.

(Example 2)

Fig. 6 is a view showing another example of the shape of the projection of the bottom wall 3e of the washing and dewatering tank 3 of the second embodiment, and the cross-sectional view of the B-B shows the cross-sectional shape of the projection. In the present embodiment, the rib-shaped projections 30b formed in a concentric circle on a circular arc line are characterized, and a plurality of the bottom walls 3e are arranged at regular intervals. The rib width W2 of the circular arc line is 6 mm, and the rib height H2 is 3 mm.

(Example 3)

Fig. 7 is a view showing another example of the shape of the projection of the bottom wall 3e of the washing and dewatering tank 3 of the third embodiment, and the cross-sectional view of the C-C shows the cross-sectional shape of the projection. The present embodiment is characterized in that a rib-shaped projection 30c which is formed in a parallel manner and which is parallel to each other in a plurality of radial ridges 3f extending from the center toward the outer edge portion of the bottom wall 3e is formed in parallel. A plurality of the bottom walls 3e are arranged at regular intervals. The rib width W3 is 6 mm and the height H3 is 3 mm.

(Example 4)

Fig. 8 is a view showing another example of the shape of the projection of the bottom wall 3e of the washing and dewatering tank 3 of the fourth embodiment, and the cross-sectional view of the D-D shows the cross-sectional shape of the projection. In the present embodiment, a projection 30d having a convex shape formed in a hemispherical shape is characterized, and a plurality of the projections 30d are arranged in the bottom wall 3e. The hemispherical circle has a diameter W4 of 20 mm and a height H4 of 4 mm.

As described above, according to the above embodiment, when the rotary drum rotates, the clothes that are lifted by the lifter are protrusions on one side and the bottom wall (a quadrangular pyramid shape, a rib shape concentrically on a circular arc line, a linear protrusion, The hemispherical projections are lifted while being lifted, and when they fall, they are also dropped while being blended with the projections of the bottom wall. Therefore, not only the rinsing effect achieved by the falling, but also the rinsing effect can be obtained, and the clothes are dirty. The effect of dirt removal.

1. . . framework

1a. . . Left side board

1b. . . Left side board

1c. . . Front cover

1d. . . Back cover

1e. . . Upper cover

1f. . . Lower front cover

1h. . . Pedestal

2. . . Outer slot

2b. . . Drainage port

2c. . . Opening

2d. . . Outer slot cover

3. . . Washing and dewatering tank

3a. . . Opening

3b. . . Ascending device

3c. . . Fluid balancer

3d. . . Peripheral wall

3e. . . Bottom wall

3f. . . Uplift

4. . . motor

5. . . Shock absorber suspension

6. . . Operation panel

9. . . Threshold

10. . . Telescopic body

12. . . Start switch

13. . . Operation button switch

14. . . monitor

26. . . Drain pipe

30. . . Protrusion

30a. . . Protrusion

38. . . Control device

39. . . switch

Fig. 1 is a view showing the appearance of a drum type washing and drying machine of the present invention.

Fig. 2 is a side view showing the internal structure of the drum type washing and drying machine of the present invention.

Fig. 3 is a view showing the internal structure of the drum type washing and drying machine of the present invention, showing a washing and drying main unit including a washing and dewatering tank, an outer tank, and a motor.

Fig. 4 is a cross-sectional view showing the bottom wall surface of the drum type washing and drying machine of the present invention cut longitudinally at a substantially central portion in the front-rear direction.

Fig. 5 is a cross-sectional view showing the bottom wall surface of the drum type washing and drying machine of the present invention cut longitudinally at a substantially central portion in the front-rear direction.

Fig. 6 is a cross-sectional view showing the bottom wall surface of the drum type washing and drying machine of the present invention cut longitudinally at a substantially central portion in the front-rear direction.

Fig. 7 is a cross-sectional view showing the bottom wall surface of the drum type washing and drying machine of the present invention cut longitudinally at a substantially central portion in the front-rear direction.

Fig. 8 is a cross-sectional view showing the bottom wall surface of the drum type washing and drying machine of the present invention cut longitudinally at a substantially central portion in the front-rear direction.

2. . . Outer slot

2c. . . Opening

2d. . . Outer groove cover

3. . . Washing and dewatering tank

3a. . . Opening

3b. . . Ascending device

3c. . . Fluid balancer

3d. . . Peripheral wall

3e. . . Bottom wall

3f. . . Uplift

4. . . motor

10. . . Telescopic body

Claims (5)

A drum type washing machine includes: a rotating drum for storing clothes; a lifter provided on an inner circumferential surface of the rotating drum; and the rotating drum is housed on the same core as the rotating drum to store a tank for washing water; a motor for rotating the drum; and a frame for supporting the outer tub. The drum type washing machine is characterized in that the central axis of rotation of the rotary drum is inclined such that the opening side becomes higher, and the bottom wall of the rotating drum has a ridge extending radially from the center toward the plural direction, and a plurality of axially extending lifters are disposed inside the outer peripheral wall of the rotary drum, and the radially extending portion of the raised portion is located in the foregoing An extension line extending in the axial direction of the lifter is provided with a plurality of protrusions each formed into an independent convex shape in a flat portion belonging to a portion of the bottom wall where the raised portion is not provided. The drum type washing machine of claim 1, wherein the projections formed in a convex shape have a plurality of quadrangular pyramid shapes. The drum type washing machine according to claim 1, wherein the projections formed in a convex shape have a rib shape concentrically on a circular arc line. The drum type washing machine according to claim 1, wherein the projections formed in a convex shape are arranged in parallel with a plurality of linear projections. A drum type washing machine according to claim 1, wherein the projections formed in a convex shape have a plurality of hemispherical projections.