KR100575200B1 - Drum Type Washing Machine - Google Patents

Abstract

An object of the present invention is to provide a drum type washing machine capable of suppressing stress concentration generated during drum rotation.

In order to achieve the above object, the rear lid 9B is a substantially rectangular member, and the front side of the opening 7 curved in an arc shape with a curvature substantially equal to the circumferential wall 6 of the drum 6 ( It consists of the curved part 33 on the 7A side, and the flat part 34 on the back side 7B side of the opening 7 formed in substantially planar shape without curvature. The flat part 34 is formed from the substantially center part of the back cover 9B to the rear part.

Drum Washing Machine

Description

Drum Type Washing Machine

1 is a longitudinal sectional view of a drum type washing machine.

2 is a perspective view showing the configuration of a drum in a state where the front lid and the rear lid are opened;

The perspective view which shows the structure of the drum in the state which opened the front lid and back lid.

4 is a perspective view showing the configuration of the rear lid.

Fig. 5 is a sectional view schematically showing the structure of the drum lid vicinity.

6 is a perspective view showing a part of a drum;

7 is a perspective view illustrating a mounting state of a hinge member.

8 is a cross-sectional view showing a connection state between a hook plate and a reinforcement plate.

9 is a plan view of the hook plate.

The front view which looked at the hook board from the hook side.

11 is a plan view of the reinforcing plate.

(Explanation of symbols for the main parts of the drawing)

6; Drum 6A; Circumferential wall (circumferential face plate) 6B; incline

7; Opening 7A; Forefront 7B; Backside

9; Drum lid 9A; Front cover (second cover) 9B; Back lid (first lid)

18; Hinge member 19; Hinge member 20; hook

21; Hook plate 22; Coupling hole 23; Joining hole

24; Reinforcing plate 31; Hinge Fixed Area

33; Curved portion 34; Flat part

The present invention relates to a drum type washing machine for storing laundry in a drum.

BACKGROUND ART Drum washing machines are known in which laundry is stored in an approximately cylindrical drum which can be rotated about an axis extending in a substantially horizontal direction to wash the laundry. A washing machine of this kind has, for example, a washing tank surrounding the outside of the drum, and by rotating the drum in a state in which a predetermined amount of water is stored in the washing tank, the baffles protruding the laundry in the drum onto the inner surface of the drum. It is possible to carry out washing by repeatedly lifting by a baffle and repeatedly performing a natural dropping operation (slapping washing) toward the surface at a certain height.

Some drum washing machines have openings on their circumferential surface for entering and exiting laundry (for example, Japanese Patent Laid-Open No. 2003-103095). This opening is substantially rectangular in plan view, and its length side extends along the circumferential direction of the drum. The opening can be opened and closed by, for example, two lids (front lid and rear lid) arranged in the circumferential direction of the drum. The front end of the front lid is attached to the front edge of the opening of the drum circumference by a hinge so that rotational movement is possible. On the other hand, the rear end of the rear lid is attached to the rear end of the opening of the drum circumferential surface by a hinge so that rotational movement is possible. By rotating each said lid outward, the opening of a drum can be opened large.

The front lid and the rear lid are each curved at a curvature approximately equal to the curvature of the drum circumferential surface. When the front lid and the rear lid is closed, the outer surface of each lid is in a state along the circumferential direction of the drum, and the hook formed at the rear end of the front lid and the coupling hole formed at the front end of the rear lid are engaged.

However, there has been a problem that when the drum having the lid of the above configuration is rotated, stress is concentrated near the attachment position of the hinge of each lid. In particular, when the drum is dewatered by rotating the drum at high speed, stress may be concentrated near the hinge attachment position, which may deform the lid.

When the drum is rotated at a high speed, stress is also concentrated at the engagement position between the hook of the front lid and the engagement hole of the rear lid, and the hook and the engagement hole may be deformed.

The present invention has been made on the basis of such a background, and an object of the present invention is to provide a drum type washing machine capable of suppressing stress concentration generated when the drum is rotated.                         

Moreover, an object of this invention is to provide the fixing structure of the lid | cover for drums which is hard to deform | transform under stress, and can close a lid reliably.

The invention according to claim 1 for achieving the above object includes a drum 6 having a left and right side plate that closes both sides of a circumferential face plate 6A and a circumferential face plate 6A, and which rotates around each center of the left and right side face plates as a rotation axis. In the drum type washing machine (1) provided with the drum), an opening (7) is formed in the drum (6) for the circumferential face plate (6A) to allow the laundry to enter and exit the drum (6), and the opening (7) is the circumferential face plate. A pair of side edges extending in the circumferential direction, a front side 7A positioned in front of the rotational direction of the circumferential surface, and a rear side positioned behind the rotational direction of the circumferential plate 6A, at the proximal positions on both the left and right sides of 6A. It is divided by 7B, the rear part is hinged to the rear side 7B side, and the front part is a free end, rotates about the hinge 19, and opens to the outer side of the drum 6 The first lid 9B is hingedly coupled to the front side 7A side, and the rear portion is hinged by a free end. Rotational movement around the (6), having a second lid (9A) opened in the outward direction of the drum (6), the first lid (9B) is compared to the second lid (9A) of the circumference of the drum (6) Direction, which is a lid which covers at least half of the opening 7, and has a curvature equivalent to that of the circumferential face plate 6A along the circumferential direction of the drum 6 toward the rear from the free end side opposite to the hinged side; The drum washing machine 1 is curved in an arc shape with a difference in curvature, and is formed in a planar shape or a curved shape from the middle part to the rear part hinged.

In addition, the code | symbol in parentheses shows the corresponding component etc. in the Example mentioned later.

According to this configuration, the stress generated by the centrifugal force due to the high speed rotation of the drum can be dispersed without concentrating on a part of the first lid. By dispersing the stress applied to the first lid in this manner, it is possible to prevent deformation of the first lid during the high speed rotation of the drum.

In the invention according to claim 2, the circumferential face plate 6A of the drum 6 has a predetermined inner and outer diameter, and the hinge fixing region 31 in which the hinge 19 is fixed along the rear side 7B of the opening 7. ) Is formed, and a step 6B is formed on the rear side of the hinge fixing region 31 so that the circumferential face plate 6A is lowered from the rear toward the hinge fixing region 31 side, and the step is the opening. The drum type washing machine 1 according to claim 1, which is formed at a position in the rear vicinity separated from the hinge fixed region 31 formed along the rear side 7B of (7) with a predetermined dimension.

According to this configuration, since a step is formed at a position in the rear vicinity separated by a predetermined dimension from the hinge fixed region, stress concentrated on the hinge fixed region during the high speed rotation of the drum can be deflected laterally than the hinge fixed region. There is a number. Therefore, it is possible to prevent deformation of the hinge fixed area and the hinge mounted on the hijin fixed area.

According to the third aspect of the present invention, the circumferential face plate 6A of the drum 6 has a predetermined inner and outer diameter, and a hinge fixed to which the hinge 19 is fixed along the rear side 7B of the opening 7. A region 31 is formed, and a step is formed on the rear side of the hinge fixing region 31 so that the peripheral plate 6A is lowered once from the rear toward the hinge fixing region 31 side. The drum type washing machine according to claim 1 is characterized in that a step 6B is formed which is gentle from the rear side to the rear of the hinge fixing region 31 formed along the rear side 7B of the opening 7.

According to this structure, since the step | step which arises smoothly from the rear side of the hinge fixed area | region to back is formed, the stress concentration of a hinge fixed area | region can be disperse | distributed. Therefore, it is possible to prevent the hinge fixed area and the hinge mounted on the hinge fixed area from being deformed.

According to the invention of claim 4, the hinge 19 fixed to the hinge fixing region 31 of the opening 7 includes the hinge fixing region 31 on the outside and inside of the circumferential surface plate 6A of the drum 6. The drum type washing machine according to claim 2 or 3, wherein the drum washing machine is fixed to the hinge fixing region 31 in a state of being sandwiched in the state.

According to this configuration, the hinge can be strongly fixed to the hinge fixed region by fixing the hinge in a state of being fitted into the hinge fixed region.

The baffle 15 is formed on the inner surface of the circumferential face plate 6A of the drum 6 so that at least the edge portion of the hinge 19 fixed with the hinge fixing region 31 is fitted therein. It is characterized by being attached.

According to this structure, since the edge part of a hinge can be covered with a baffle, clothing etc. can be prevented from being caught by the edge part of a hinge at the time of washing | cleaning of clothes, etc., or drying.

A sixth aspect of the present invention relates to a drum type washing machine (1) having a drum having a left and right side plate which closes both sides of a circumferential face plate (6A) and a circumferential face plate (6A), and which rotates about the central portion of the left and right side face plates with a rotation axis. In the drum 6, an opening 7 is formed in the peripheral face plate 6A to allow the laundry to enter and exit the drum 6, and the opening 7 is located at positions adjacent to the left and right sides of the peripheral face plate 6A. And a pair of side edges extending in the circumferential direction, a front side 7A positioned in front of the rotational direction of the circumferential face plate 6A, and a rear side 7B positioned behind the rotational direction of the circumferential face plate 6A. The rear portion is hinged to the rear side 7B side, the front portion is a free end, the first lid (9B, 24) and the front side which rotates around the hinge 19, and opens in the outward direction of the drum (6), The whole is hinged to the 7A side, and the rear part rotates about the hinge 18 as a free end, and the drum ( 6) the second lid (9A, 21) is opened in the outward direction, the free ends of the first lid (9B, 24) is formed with hooks or coupling holes (22, 23) formed toward the outside,

At the free ends of the second lids 9A and 21, the coupling holes formed at the free ends of the first lids 9B and 24 or the coupling holes 22 and 23 are formed toward the outside. When the hook 20 is formed and the first lids 9B and 24 and the second lids 9A and 21 are closed, the free ends and the second lids 9A and 21 of the first lids 9B and 24 are closed. ) Free ends of the overlapping, the hook 20 and the coupling holes (22, 23) is coupled to keep both lids in the closed state, the coupling hole 23 is a horizontal length extending in the width direction of the lid Is a drum washing machine (1) characterized in that the side of the free end side is curved or bent in a direction away from the free end.

According to the said structure, since the edge part of a hook and the edge part of a coupling hole do not contact, it can prevent that the stress generated by the centrifugal force by the high speed rotation of a drum concentrates on the edge part of a hook and the edge part of a coupling hole. Therefore, it is possible to prevent the end of the hook and the end of the coupling hole from deforming due to stress concentration.

According to a seventh aspect of the present invention, there is provided a drum washing machine having a drum (6) having left and right side plates for closing both sides of a circumferential face plate (6A) and a circumferential face plate (6A), and rotating each center portion of the left and right side plates with a rotation axis ( In 1), the drum 6 is formed with a periphery face plate 6A, and openings 7 through which laundry is allowed to enter and exit the drum 6 are formed on the left and right sides of the periphery face plate 6A. At a proximal position, a pair of side edges extending in the circumferential direction, a front side 7A positioned in front of the rotational direction of the circumferential face plate 6A, and a rear side 7B positioned behind the rotational direction of the circumferential face plate 6A. The first lids 9B, 24 which are hinged to the rear side 7B side, the front end of which is a free end, rotates around the hinge 19, and opens outwardly of the drum 6; And the whole is hinged to the front side 7A side, and the rear part rotates about the hinge 18 by a free end, (6) having a second lid (9A, 21) that opens in the outward direction, the free ends of the first lid (9B, 24) is formed with hooks or coupling holes (22, 23) outwardly formed ,

At the free ends of the second lids 9A and 21, the coupling holes formed at the free ends of the first lids 9B and 24 or the coupling holes 22 and 23 are formed toward the outside. The hook 20 is formed,

When the first lids 9B and 24 and the second lids 9A and 21 are closed, the free ends of the first lids 9B and 24 and the free ends of the second lids 9A and 21 overlap with each other. In the hook 20 and the coupling holes 22, 23 are coupled to keep both lids in the closed state,

The hook 20 is a hook 20 having a horizontal length extending in the width direction of the lid, and the drum type washing machine 1 characterized in that the central portion in the horizontal length direction is curved or bent in a direction away from the free end.

According to the said structure, since the edge part of a hook and the edge part of a coupling hole do not contact, it can prevent that the stress generated by the centrifugal force by the high speed rotation of a drum concentrates on the edge part of a hook and the edge part of a coupling hole. Therefore, it is possible to prevent the end of the hook and the end of the coupling hole from deforming due to stress concentration.

The hook 20 is characterized by being formed by a hook plate 21 attached to the second lids 9A and 21.

According to the said structure, even when stress concentrates on a hook, since a hook plate deforms, it can prevent that a 2nd lid itself deforms.

The coupling holes 22 and 23 are formed to penetrate the reinforcing plate 24 and the first lid 9B joined to the first lid 9B.

According to the said structure, since the coupling hole is formed so that a reinforcement board and a 1st cover may penetrate, the intensity | strength of the peripheral part of a coupling hole can be heightened more. Therefore, the deformation of the peripheral portion of the coupling hole can be prevented more effectively.

(Example)

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1: is a longitudinal cross-sectional view of the drum type | mold washing machine 1, and has shown the figure which looked at the cross section when it cut | disconnected to the vertical surface along the front-back direction from the right side.

The drum type washing machine 1 is partitioned by an optical cube 2 having an external shape of a substantially rectangular parallelepiped shape. In front of the upper surface 2A of the photoreceptor 2, an inclined surface 2B inclined so as to be lowered toward the front side is formed, and in the horizontal direction from the upper surface 2A of the photoreceptor 2 to the inclined surface 2B. The opening 3 which can be opened and closed by the outer lid which is not shown in the center part is formed.

Inside the photoreceptor 2, the substantially cylindrical washing tank 4 in which both end surfaces were closed is arrange | positioned so that the axis line may extend substantially horizontally to the left and right. The lower part of the circumferential wall 4A of the washing tank 4 is supported by the plurality of dampers 5. In the washing tank 4, the drum 6 for accommodating a laundry inside is arrange | positioned. The drum 6 is arranged in a substantially cylindrical shape with both end surfaces closed and its axis extends substantially horizontally from side to side, and is rotatably mounted in the washing tank 4.

 In the peripheral surface wall 6A of the drum 6, an opening 7 for entering and exiting laundry is formed. Moreover, the opening 8 is formed in 4 A of circumferential surface walls of the washing tank 4 in the position which opposes the opening 3 of the basket 2. The opening 7 of the drum 6 can be opened and closed by a drum lid 9 which can be rotated outward, while the opening 8 of the washing tub 4 has a rotational movement outward. It can be opened and closed by the inner lid 10 as much as possible. The laundry is opened to the drum 6 by opening all the outer lids (not shown) of the basket 2, the middle lid 10 of the washing tub 4, and the drum lid 9 of the drum 6. You can enter and exit.

The said intermediate | middle lid 10 is a member of a substantially arcuate cross section, The rear end part is attached to the circumferential wall 4A of the washing tank 4 so that rotational movement is possible. In the state which closed the intermediate | middle lid 10, the front-end | tip part of the intermediate | middle lid 10 couple | bonds with 4 A of peripheral surface walls of the washing tank 4, and the opening 8 is closed by watertightness.

The opening 7 is substantially rectangular in plan view, and is formed such that the length side thereof extends along the circumferential direction of the drum 6. The drum lid 9 for opening and closing the opening 7 is constituted by the front lid 9A and the rear lid 9B. The front lid 9A is rotatably attached to the circumferential wall 6A of the drum 6 so that the front end thereof is along the front side of the opening 7.

On the other hand, the rear lid 9B is rotatably attached to the circumferential wall 6A of the drum 6 so that the rear end thereof follows the rear side of the opening 7. The opening 7 is closed by combining the rear end of these front lids 9A and the front end of the rear lid 9B.

All of the front lid 9A and the rear portion of the rear lid 9B are connected by, for example, a rod-shaped connecting member 11, so that one of the front lid 9A and the rear lid 9B is rotated. If you exercise, the other side rotates in conjunction with it.

At the centers of both the left and right end faces of the drum 6, rotary shafts 12 extending along the axis of the drum 6 are mounted, respectively. The rotating shaft 12 is attached so that rotation is possible with respect to the left and right end surface of the washing tub 4. The rotary shaft 12 is connected to the rotary shaft 12 by, for example, a drum driving motor (not shown) connected by a DD (direct drive) method, and the drum driving motor is rotated. The drum 6 is made to rotate by axial rotation.

The water supplied from the water supply facility in the washing machine is supplied into the washing tank 4 by the water supply pipe 13 connected to the rear end of the peripheral wall 4A of the washing tank 4. The drainage port 14 is formed in the lowest part of 4 A of circumferential wall 4 of the washing tank 4, and a water supply tank is supplied by supplying the drain valve (not shown) connected to this drain port 14 in the closed state. (4) The water can be stored.

In the peripheral surface wall 6A of the drum 6, a plurality of water passages (not shown) are formed, and water supplied into the washing tank 4 flows into the drum 6 through the water passages. Moreover, on the inner surface of 6 A of circumferential surface walls of the drum 6, the baffle 15 for lifting the laundry in the drum 6 at the time of rotation of the said drum 6 is spaced at a predetermined angle in the circumferential direction. (For example, three in 120 degree intervals), they are provided so as to extend in the left and right directions, respectively.

At the time of washing, the laundry in the drum 6 is lifted up by the baffle 15 in accordance with the rotation of the drum 6, and the laundry is washed by repeating an operation (dumbling) that naturally falls from a certain height. By being beaten on the surface of the water stored in (4), so-called beat washing is achieved.

Moreover, the water stored in the washing tank 4 opens the drain valve and discharges it out of the washing machine through the drain pipe 16 connected to the drain port 14.

At the time of dehydration, the water contained in the laundry in the drum 6 is dewatered by centrifugal force by the high speed rotation of the drum 6. The water squeezed from the laundry is scattered out of the washing tank 4 through the water passage, and is discharged out of the washing machine through the drain port 14.

This drum type washing machine 1 also has a function of drying the laundry after dehydration. That is, after dehydration, the laundry can be dried by rotating the drum 6 while sending warm air from the drying apparatus (not shown) to the washing tank 4 (in the drum 6).

2 and 3 are perspective views showing the structure of the drum 6. The opening 7 is formed in the peripheral surface wall 6A of the drum 6, and the opening 7 is opened and closed by the drum lid 9. The opening 7 has a front side 7A positioned in front of the rotation direction A1 of the drum 6, a rear side 7B positioned behind the rotation direction A1 of the drum 6, and left and right sides. Has a pair of side edges extending in the circumferential direction, and has a substantially rectangular shape in plan view. In addition, the opening 7 is not limited to substantially rectangular, but may be square.

The front lid 9A of the drum lid 9 is shorter in the circumferential direction of the drum 6 than the rear lid 9B, and all of them are connected to the hinge member 18 at the front side 7A of the opening 7. It is hinged by, the rear end is a free end, it can rotate around the hinge member (18). The rear lid 9B is a lid that is longer in the circumferential direction of the drum 6 than the front lid 9A and covers at least half of the opening 7. The rear lid 9B has a rear portion hinged to the rear side 7B of the opening 7 by a hinge member 19, the front portion of which is a free end, and rotates about the hinge member 19. You can do it.

The front cover 9A is provided with the hook plate 21 on the upper surface of the rear part. The hook plate 21 has a pair of hooks 20 which protrude upward and incline toward the rotation direction A1 side of the drum 6. The pair of hooks 20 are placed in parallel with the width direction of the rear lid 9B. Moreover, the back cover 9B is provided with the two engaging holes 22 arrange | positioned in parallel with the width direction in the front part. In addition, a reinforcing plate 24 having two coupling holes 23 is attached to the lower surface of the front portion of the rear lid 9B so that the coupling holes 23 overlap the coupling holes 22 (Fig. Not shown for 2). The hooks 20, the coupling holes 22, and 23 extend in length in the width direction, respectively. The hook 20 may be formed by protruding a part of the front lid 9A. It is not limited to the structure which has the reinforcement board 24, The structure which makes the hook 20 couple | bond directly with the engagement hole formed in the back cover 9B may be sufficient. Moreover, you may employ | adopt for the lid made into only one of the back lids 9B.

Since the hook plate 21 and the reinforcement plate 24 are provided in the front cover 9A and the back cover 9B, the hook plate 21 and the reinforcement plate 24 have a thickness, so that the front The strength of the hook 20 and the engaging hole 23 can be raised, without changing the thickness of the member which forms the lid 9A and the back lid 9B. Thereby, the connection force at the time of connection of 9 A of front lids and 9 B of back lids can be strengthened, and also when the hook plate 21 and the reinforcement board 24 are damaged, etc., the hook plate 21 is carried out. And the replacement state of the reinforcing plate 24 can be maintained.

The opening 7 is closed with 9 A of front lids going down, and 9 C of back lids going up, and one part overlapping up and down. At this time, the opening 7 is closed by engaging the two hooks 20 of the hook plate 21 formed in the front lid 9A with the engaging holes 23 of the reinforcing plate 24. In addition, the front lid 9A and the rear lid 9B are pushed into the drum 6 so as to push the hook 20 and the coupling hole 23 to be released, and the rear lid 9B is the hinge member 19. The opening 7 is opened by rotating the outward of the drum 6 around the drum 6 and rotating the outwardly of the drum 6 around the hinge member 18 by the front lid 9A. (See Figure 3).

In addition, the front lid 9A has an extremely short length in the circumferential direction of the drum 6, and when the rear lid 9B opens and closes rather than functions as a lid, the engaging holes 23 and the hooks of the rear lid 9B are hooked. It may be a rocking plate (a rocking plate with a hook 20) that swings around the front side 7A of the opening 7 so as to release or engage the tube.

4 is a perspective view showing the configuration of the rear lid 9B in detail, and FIG. 5 is a cross-sectional view schematically showing the configuration of the drum lid 9 vicinity.

The back cover 9B is a substantially rectangular member in plan view, and has a curved portion (7A) on the front side of the opening 7 curved in an arc shape with a curvature approximately equal to 6A of the peripheral surface wall of the drum 6 ( 33) and the planar portion 34 on the rear side 7B side of the opening 7 formed in a substantially planar shape without bending. It is preferable that the flat part 34 is formed from the substantially center part of the back cover 9B to the rear part. Moreover, the back cover 9B is provided with the some uneven line which extends in the circumferential direction of the back cover 9B, and is parallel to the width direction of the back cover 9B. Since the back cover 9B is provided with the uneven line, the strength with respect to a stress etc. can be increased.

In the related art, the entire back lid 9B is curved in an arc shape. As a result of this analysis, the stress generated by the centrifugal force due to the high speed rotation of the drum 6 is near the hinge portion of the back lid 9B. Concentration has been confirmed to cause so-called metal fatigue. In the present invention, the rear lid 9B has a flat portion 34, so that the stress generated by the centrifugal force due to the high speed rotation of the drum 6 can be dispersed without concentrating in the vicinity of the hinge portion. By dispersing the stress concentrated near the hinge portion, it is possible to prevent deformation near the hinge portion occurring during the high speed rotation of the drum 6.

In addition, as long as the back cover 9B is a shape including the flat part 34 and the curved part 33, it is not limited to that the flat part 34 is formed over the back part from the substantially center part of the back cover 9B, and is more. It may be formed from the front to the rear portion, or may be formed from the rear to the rear portion. Moreover, the planar part 34 may be a thing of the slightly curved shape containing the curved surface curved by curvature smaller than the curvature of the curved part 33. As shown in FIG. It is also possible to apply the above shape to the front lid 9A.

6 is a perspective view showing a part of the drum 6. The portion immediately after the rear side 7B of the opening 7 constitutes a hinge fixing region 31 for mounting the hinge members 18 and 19, and the circumferential wall 6A of the drum 6 The portion of the hinge fixing region 31 is recessed. More specifically, the hinge fixing region 31 is formed one step lower, and the outer peripheral surface of the circumferential wall 6A gradually lowers from the rear toward the hinge fixing region 31 (ie, the hinge fixing region 31). Slope surface 6B is formed slowly from the rear side to the rear side). In this way, by forming the hinge fixing region 31 one step lower, the rear lid 9B attached to the hinge fixing region 31 by the hinge members 18 and 19 is closed. The outer surface (upper surface) of the lid 9B becomes substantially flat with respect to the outer peripheral surface of the circumferential wall 6A.

As shown by the broken line in FIG. 6, when the circumferential wall 6A is shaped to be recessed at a substantially right angle immediately after the hinge fixed region 31, the stress concentrates on the hinge fixed region 31, and the drum 6 ) Rotates at a high speed, the hinge fixing region 31 may deform. In this embodiment, since the hinge fixed region 31 and the outer circumferential surface of the circumferential wall 6A are connected at the inclined surface 6B, the stress concentration in the hinge fixed region 31 can be dispersed. Therefore, it is possible to prevent the hinge fixing region 31 and the hinge members 18 and 19 mounted on the hinge fixing region 31 from being deformed.

The step formed in the circumferential wall 6A so as to be lowered by one step from the rear toward the hinge fixing region 31 may be disposed at a rear position separated by a predetermined dimension from the hinge fixing region 31. According to this structure, the stress which concentrates on the hinge fixing area | region 31 at the time of high speed rotation of the drum 6 can be made to shine back rather than the hinge fixing area | region 31. FIG. Therefore, it is possible to prevent the hinge fixing region 31 and the hinge members 18 and 19 mounted on the hinge fixing region 31 from being deformed. In this case, the surface constituting the step is not limited to the gentle inclined surface 6B as in the above embodiment, and may be, for example, a more steep inclined surface, or a surface standing up at an approximately right angle.

The configuration in which the inclined surface 6B is formed behind the rear side 7B of the opening 7 is not limited, and the configuration in which the inclined surface 6B is formed in front of the front side 7A of the opening 7 may be used. The inclination surface 6B may be formed in both the rear of the back side 7B of (7), and the front of the front side 7A.

The inclined surface 6B is not limited to being configured in a flat plane as in the present embodiment. For example, the inclined surface 6B may be configured to be curved.

7 is a perspective view showing a mounting form of the hinge members 18 and 19. Hinge members 18 and 19 hinge-couple the front lid 9A and the rear lid 9B to the drum 6, and rotate the front lid 9A and the rear lid 9B about one end. This would be possible. The hinge members 18 and 19 include the first hinges 18A and 19A made by bending a metal plate, for example. The first hinges 18A and 19A have an outer fixing surface 28 and an inner fixing surface 29 which are substantially parallel to each other formed by folding a metal plate in layers, and the folded portions have a substantially cylindrical shape. The curved pin support part 27 is used. The pin support part 27 is disconnected every fixed space | interval. Moreover, the edge part of the outer fixing surface 28 is curved in substantially cylindrical shape, and the bending edge part 30 is formed.

Insert the peripheral surface wall 6A of the drum 6 into the outer fixing surface 28 and the inner fixing surface 29 so that the outer fixing surface 28 is the outside of the drum 6, and also use a rivet or the like. Thus, the first hinges 18A and 19A are laminated and fixed to the circumferential wall 6A. Since the first hinges 18A and 19A have a structure in which the circumferential wall 6A is sandwiched between the outer fixing surface 28 and the inner fixing surface 29, the first hinges 18A and 19A are provided. The 19A can be strongly fixed to the drum 6.

The hinge 19 includes a second hinge 35 (see Fig. 4) fixed to the rear end of the rear lid 9B. The second hinge 35 has a fitting structure formed by bending a metal plate in the same manner as the first hinge 19A, and a pin support portion 36 which is curved in a substantially cylindrical shape is provided in the folded portion. This pin support part 36 is cut | disconnected parts other than the position corresponding to the broken part of the pin support part 27 of 1st hinge 19A. The pin support part 27 of the 1st hinge 19A and the pin support part 36 of the 2nd hinge 35 are arrange | positioned so that it may fit in the cutting part of each other, and each pin support part 27 and 36 is arrange | positioned. Speaking to each other from side to side By inserting the circumferential pin into these pin support parts 27 and 36, the back cover 9B is attached to the 1st hinge 19A so that rotational movement is possible about a pin.

As indicated by the broken line in FIG. 7, the baffle 15 may also adopt a configuration that covers the edge from the edge of the fixing surface 29 over the middle portion. By adopting this constitution, it is possible to prevent the clothing or the like from being caught on the edge of the fixing surface 29 during washing or drying of clothing or the like.

8 is a cross-sectional view showing in detail the connection state between the hook plate 21 and the reinforcement plate 24. The hook plate 21 formed in the upper surface of 9 A of front lids has the hook 20 which protrudes upward and inclines toward the rotation direction A1 side of the drum 6 at the front-end | tip. The rear lid 9B has a coupling hole 22 in its entirety. And the resin cover member 32 which covers the back cover 9B is formed in the front-end center part of the upper surface of the back cover 9B. The reinforcing plate 24 is formed on the lower surface of the rear lid 9B so that the coupling hole 23 overlaps the coupling hole 22 of the rear lid 9B. If the front lid 9A and the rear lid 9B overlap with the front lid 9A down and the rear lid 9B up, the hook 20 of the hook plate 21 installed on the front lid 9A is reinforced. The hook plate 21 and the reinforcement plate 24 are connected by penetrating through the coupling hole 23 of the plate 24.

9 is a plan view of the hook plate 21, and FIG. 10 is a front view of the hook plate 21 as seen from the hook 20 side. The hook plate 21 consists of a plate-shaped member, and has the pair of hooks 20 which protruded toward the upper side at the side of the free end side of 9 A of front lids. The hook 20 has a shape in which the center portion has a long elongated portion 20A which is expanded in a bow shape in a direction away from the free end of the front lid 9A.

One side (right side) of the hook 20 has the inclined shape in which the edge part of the inner side in the part which protruded upwards protruded rather than the edge part of the outer side. Moreover, the other side (left side) of the hook 20 protrudes upwards in the form of a hill, and the peak of the mountain has a shape which protrudes more than the uppermost point of the protruding portion of the other hook 20.

In addition, as shown by the broken line, the hook 20 on the left side may also have an inclined shape in which the inner edge part protruded more than the outer edge part. In this case, when the uppermost point of the protruding portion of the hook 20 on the left side is formed to protrude more than the uppermost point of the protruding portion of the other hook 20, the hook plate 21 and the reinforcing plate 24 are connected. At this time, the hook 20 is easily caught by the engaging hole 23 of the reinforcing plate 24.

11 is a plan view of the reinforcing plate 24. The reinforcing plate 24 is formed of a plate-shaped member, and has two transverse coupling holes 23 extending in the width direction of the reinforcing plate 24. The two coupling holes 23 are substantially rectangular in shape, respectively, and are formed in parallel in the width direction of the reinforcing plate 24.

The coupling hole 23 has a shape in which the central portion of the side of the free end side of the rear lid 9B has an elongated portion 23A which is expanded in a bow shape in a direction away from the free end of the rear lid 9B.

In a state where the hook plate 21 and the reinforcing plate 23 are connected, the elongate portion 20A of the hook 20 and the elongate portion 23A of the coupling hole 23 are in contact with each other. In the related art, the hook 20 and the coupling hole 20 have a flat plate shape. As a result of this analysis, the stress generated by the centrifugal force due to the high-speed rotation of the drum 6 causes Concentrating on the contact portion with the end of the coupling hole 23, it is confirmed that the hook 20 and the coupling hole 23 can cause so-called metal fatigue. In the present invention, since the end of the hook 20 and the end of the engaging hole 23 do not contact each other, the hook 20 and the engaging hole 23 are stressed by the centrifugal force due to the high speed rotation of the drum 6. ) Can be prevented from deforming.

In addition, the shape of the hook 20 is not limited to expanding in a bow shape, For example, it may be a shape bent in the direction away from the free end of 9 A of front lids. The shape of the coupling hole 23 is not limited to the expansion of the side of the free end side of the rear lid 9B in a bow shape in a direction away from the free end of the rear lid 9B. The shape may be bent in a direction away from the free end of 9B).

In addition, the hook 20 and the coupling hole 23 are not limited to the structure formed in two pieces each, The structure formed one by one may be sufficient as the structure formed in three or more pieces, respectively.

In addition, the hook 20 is formed on the front lid 9A side, the coupling hole 23 is not limited to the configuration formed on the back lid 9B side, the hook 20 is on the rear lid 9B side. The coupling hole 23 may be formed in the front lid 9A side.

The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims.

According to the present invention, it is possible to provide a drum type washing machine capable of suppressing stress concentration generated during drum rotation.

Moreover, according to this invention, the deformation | transformation hardly occurs even if a stress is applied, and the fixing structure of the lid | cover for drums which can close a lid reliably is provided.

Claims (9)

In the drum type washing machine having a left and right side plate which closes both sides of the circumferential face plate and the circumferential face plate, and a drum which rotates each center portion of the left and right side face plates as the rotation axis, The drum is formed in the circumferential face plate, the opening for entering the laundry into the drum, The opening is divided into a pair of side edges extending in the circumferential direction, a front side positioned in front of the rotational direction of the circumferential face plate, and a rear side positioned behind the rotational direction of the circumferential face plate, at the proximal positions of the left and right sides of the peripheral face plate. It is The rear side is hinged to the rear side, the front portion is a free end, rotates around the hinge, the first lid open outwardly of the drum, the hinge is all hinged to the front side, the rear portion is hinged by the free end Rotational movement to the center, having a second lid that opens in the outward direction of the drum, The first lid and the second lid covers the entire opening, the first lid is longer in the circumferential direction of the drum compared to the second lid, and the rear of the drum from the free end side opposite to the hinged side A drum type washing machine is curved in an arc shape along a direction, and is formed in a planar shape from the middle portion to the hinged rear portion. According to claim 1, wherein the peripheral plate of the drum has a predetermined inside and outside diameter, A hinge fixing region is formed in which the hinge is fixed along the rear side of the opening, and a step is formed at the rear side of the hinge fixing region so that the circumferential face plate is lowered from the rear toward the hinge fixing region side. And the step is formed at a position in the rear vicinity separated from the hinge fixed region formed along the rear side of the opening with a predetermined dimension. According to claim 1, wherein the peripheral plate of the drum has a predetermined inside and outside diameter, A hinge fixing region is formed in which the hinge is fixed along the rear side of the opening, and a step is formed at the rear side of the hinge fixing region so that the circumferential face plate is lowered from the rear toward the hinge fixing region side. The stepped machine is a drum type washing machine, characterized in that a step that occurs gently from the rear side of the hinged fixed region formed along the rear side of the opening to the rear is formed. The hinge fixed to the hinge fixing region of the opening is fixed to the hinge fixing region in a state in which the hinge fixing region is sandwiched from the outer side and the inner side of the circumferential plate of the drum. Drum Washing Machine. delete In a drum type washing machine having a left and right side plates for closing both sides of the circumferential face plate and the circumferential face plate, and a drum for rotating each center portion of the left and right side face plates as the rotation axis, The drum is formed with a circumferential face plate and an opening for allowing laundry to enter and exit the drum. The opening is divided into a pair of side edges extending in the circumferential direction, a front side positioned in front of the rotational direction of the circumferential face plate, and a rear side positioned behind the rotational direction of the circumferential face plate, at the proximal positions of the left and right sides of the peripheral face plate. It is The rear side is hinged to the rear side, the front portion is a free end, rotates around the hinge, the first lid open outwardly of the drum, the hinge is all hinged to the front side, the rear portion is hinged by the free end Rotational movement to the center, having a second lid that opens in the outward direction of the drum, The free end of the first lid is formed with a hook or a coupling hole made toward the outside, At the free end of the second lid, a hook formed toward the outside or a coupling hole capable of engaging with a hook or a coupling hole formed at the free end of the first lid is formed. When the first lid and the second lid is closed, the free end of the first lid and the free end of the second lid overlap, the hook and the coupling hole is coupled to maintain both lids in the closed state, The coupling hole is a hole having a horizontal length extending in the width direction of the lid, the side of the side that partitions the coupling hole, the side of the free end is curved or bent in the direction away from the free end, the hook and the coupling hole A drum type washing machine, characterized in that the end of the hook does not come into contact with the end of the coupling hole when this is engaged. In a drum type washing machine having a left and right side plates for closing both sides of the circumferential face plate and the circumferential face plate, and a drum for rotating each center portion of the left and right side face plates as the rotation axis, The drum is formed in the circumferential face plate, the opening for entering the laundry into the drum, The opening is divided into a pair of side edges extending in the circumferential direction, a front side positioned in front of the rotational direction of the circumferential surface plate, and a rear side positioned behind the circumferential surface of the circumferential surface plate, at the proximal positions of the left and right sides of the peripheral face plate. It is The rear part is hinged to the rear side, the front part is a free end, rotates about the hinge, the first lid is opened outwardly of the drum, the hinge is all hinged to the front side, and the rear part is hinged to the free end. Rotational movement in the, provided with a second lid that opens in the outward direction of the drum, The free end of the first lid is formed with a hook or a coupling hole made toward the outside, At the free end of the second lid, a hook formed toward the outside or a coupling hole capable of engaging with a hook or a coupling hole formed at the free end of the first lid is formed. When the first lid and the second lid is closed, the free end of the first lid and the free end of the second lid overlap, the hook and the coupling hole is coupled to maintain both lids in the closed state, The hook is a hook having a horizontal length extending in the width direction of the lid, the center portion in the horizontal direction is curved or bent in a direction away from the free end, when the hook and the coupling hole is coupled to the end of the hook and the end of the coupling hole Drum type washing machine, characterized in that not in contact. delete delete

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