JP2020011124A - Washing machine - Google Patents

Abstract

To provide a washing machine having an easy to use lid body with a simple structure without a toggle spring.SOLUTION: A washing machine comprising a water tank 18 with a charge port 3 at a top face and a rotary vane 22 at a bottom face has a lid body 5 to cover an opening when closed and springs 55a and 55b to apply torque to the lid body 5 in an opening direction at least when the lid body 5 is closed. The lid body 5 has a sheet of lid glass in a plate form.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a washing machine for washing clothes.

  In a so-called vertical type washing machine in which a water tub is rotated around a vertical axis, an upper side is opened, and laundry is taken in and out, washing is performed by providing a rotary wing on a bottom surface and rotating the rotary wing and the water tub.

  The lid for taking in and out the laundry is pivotally supported by a hinge, which is a rotating shaft provided on the back side as viewed from the user, with respect to a top cover provided on the upper portion of the main body of the washing machine so that the lid can be opened and closed. Can be opened by lifting the front edge. The lid body is divided into a front side and a rear side, which are divided into two parts, and are bent and opened. Patent Documents 1-3 are known as prior arts relating to this integrated system.

Patent Literature 1 discloses “a top cover placed on the top of a washing machine main body, a lid that is pivotally supported by a lid hinge shaft above the top cover, and a predetermined angle during opening and closing rotation of the lid. Thus, a toggle spring for switching the urging force in the opening direction or the closing direction, a lid spring for urging the lid toward the opening side, a spring shaft supporting the lid spring, and attenuating the rotation of the lid. A rotary shock absorbing damper, a damper holding body that accommodates the shock absorbing damper in a rotatable and slidable manner, and a planar shape that supports a lid main body and a lid outer peripheral portion of a transparent member constituting the lid from below. A lid lower frame having a substantially donut shape, a lid reinforcing plate of the lid lower frame, and a space behind the lid formed by attaching the lid lower frame to the lid, the lid spring; The spring shaft, the shock absorbing damper, the damper holder, A plate, etc., are installed in the space portion to integrate the lid unit, and the lid reinforcing plate is formed of a thin steel plate and attached to the lid lower frame formed of a plastic material with a plurality of tapping screws. And a lid structure of a washing machine in which the damper holding body is fixed and sandwiched between the lid lower frame body and the lid body. " (Claim 1)
Patent Literature 2 discloses that “the top cover placed on the top of the washing machine main body, the lid that is openably and closably disposed on the top cover, and the angle of the lid during the opening operation from the closed state of the lid. A toggle spring that urges in the opening direction when the predetermined angle is reached, and urges in the closing direction when the angle of the lid reaches the predetermined angle during the closing operation from the open state of the lid, A lid spring for urging the lid toward the open side; and a rotary shock-absorbing damper that attenuates the rotation of the lid by viscous oil enclosed therein, wherein the shock-absorbing damper is slidably slidable. The shock absorbing damper is fixed to the lid, the damper shaft of the shock absorbing damper is non-rotatably held on the top cover, and the damper holding body and the shock absorbing Damper is a predetermined angle in the direction of rotation When the lid is opened, at the beginning of the opening operation, the damping force of the shock absorbing damper is not applied to the rotation of the lid at the time of the opening, and the spring force of the toggle spring is applied to the lid. Applying the damping force of the shock-absorbing damper to the entire opening of the lid from the opening direction to the opening of the lid, and closing the lid from the opening, at the beginning of the closing operation, The damping force of the shock absorbing damper does not affect the rotation of the lid during play, and the lid is closed after the spring force of the toggle spring biases the lid in the closing direction. Until then, a lid structure for a washing machine having a configuration in which the damping force of the shock absorbing damper is applied is disclosed. (Claim 1)
Patent Literature 3 discloses that “a top cover placed on an upper part of a washing machine main body, a lid body that is openably and closably disposed on the top cover, and an opening direction at a predetermined angle during the opening and closing rotation operation of the lid body. Or a toggle spring for switching a biasing force in a closing direction, a lid spring for biasing the lid body to the open side, and a rotary impact relief damper for attenuating rotation of the lid body, wherein the impact relief damper is provided. Is housed in a damper holding body provided rotatably and slidably provided therein, the damper holding body is fixed to the lid, and a damping force is added to the rotation of the lid when the lid is opened and closed. In addition, inside the space behind the lid, the lid, the spring shaft supporting the lid spring, the shock-absorbing damper, and the damper holder are integrally provided with the lid integrally united. And the cover is attached to the top cover. When mounted on the lid, the lid is in an open state and in a free state where there is no urging force of the lid spring, and one end of the lid spring is extended below the lid, and the lid is above the top cover. The end of the lid spring is inserted into and engaged with the lid spring insertion hole formed in the top cover from a substantially vertical direction, and the lid is opened and the lid is free in the free state without the urging force of the lid spring. A lid structure of a washing machine which is attached to a top cover and configured to be able to open and close the lid body "is disclosed. (Claim 1)

Japanese Patent No. 4462362 Japanese Patent No. 4513877 Japanese Patent No. 4605234

  However, the configurations described in Patent Literatures 1 to 3 require a toggle spring that switches the biasing force in the opening direction or the closing direction at a predetermined angle during the opening and closing operation of the lid.

  Accordingly, an object of the present invention is to provide a washing machine having a lid that is simple in structure and easy to use without using a toggle spring.

  In order to achieve the above object, a washing machine according to the present invention comprises a water tank having an opening on an upper surface and a rotating blade on a bottom surface, a lid covering the opening when closed, and a lid for closing at least the lid. A spring for applying a torque in the opening direction to the body, wherein the lid has a plate-shaped and one-piece lid glass.

  According to the present invention, it is possible to provide a washing machine having a lid that is simple in structure and easy to use without using a toggle spring.

1 shows a perspective view of an electric washing machine according to a first embodiment of the present invention. It is a perspective view of the electric washing machine concerning a 1st embodiment of the present invention, and shows a state where a lid was opened. 1 shows a top view of an electric washing machine according to a first embodiment of the present invention. FIG. 4 is a sectional view of the electric washing machine according to the first embodiment of the present invention, taken along line AA of FIG. 3. It is a perspective view of the lid of the electric washing machine concerning a 1st embodiment of the present invention. It is BB sectional drawing of FIG. 3 along the rotation axis of the lid of the electric washing machine which concerns on 1st Embodiment of this invention. FIG. 7 is a partial cross-sectional view of the electric washing machine according to the first embodiment taken along line CC of FIG. 6, showing the vicinity of the fulcrum of the lid, (a) showing the lid in an open state, and (b) showing the lid. Indicates a closed state. It is DD sectional view taken on the line of DD of FIG. 6 which shows the vicinity of the fulcrum of the lid of the electric washing machine concerning 1st Embodiment of this invention. FIG. 4 is an exploded perspective view showing an attaching operation of the lid of the electric washing machine according to the first embodiment of the present invention. It is EE partial sectional view of Drawing 9 showing attachment operation of a lid of an electric washing machine concerning a 1st embodiment of the present invention. It is the schematic which shows the relationship between the opening angle of the cover of the electric washing machine which concerns on 1st Embodiment of this invention, its own weight, and opening force. It is a block diagram of a control part of the electric washing machine concerning a 1st embodiment of the present invention. It is a flow chart which shows the basic control processing program of the electric washing machine concerning a 1st embodiment of the present invention.

  Hereinafter, an example (hereinafter, referred to as “embodiment”) for carrying out the present invention will be described in detail with reference to the drawings as appropriate. In each of the drawings, common portions are denoted by the same reference numerals, and redundant description will be omitted. In the following description, the directions of up, down, left, right, front and back are based on the directions of up, down, left, right, front and back shown in FIG.

  The so-called vertical electric washing machine according to the present embodiment performs washing and drying of clothes by the following configuration.

  A rotatably supported water tub is provided coaxially with the outer tub in an outer tub for storing the washing water, and a rotating wing provided with irregularities on an upper surface is rotatably provided on the bottom surface of the water tub. The rotary wing and the water tank are configured to be selectively rotated and driven by driving means such as a motor.

  Further, a detergent water supply means for supplying water to the detergent inlet, dissolving the detergent charged in the detergent inlet, and introducing it to the bottom of the outer tub, a water supply means for supplying water to the outer tub, and a washing water in the outer tub. Draining means for draining the outside of the washing machine, washing water circulating means for pumping the washing water on the bottom of the outer tub and falling on the laundry from the top of the tub, and water-cooling and dehumidifying by inhaling the humid air inside the outer tub. After heating, dehumidifying means for blowing low-humidity air into the water tub to dry the laundry, the driving means, the water supply means, the drainage means, the washing water circulation means, the dehumidification means, And control means for controlling the driving of.

  The control means controls the washing and drying steps as follows.

  In the washing process, the water supplied into the outer tub dissolves the detergent supplied to the bottom of the outer tub to generate a high-concentration detergent solution. A high concentration of detergent liquid is circulated by the washing water circulating means so as to fall on the laundry from the upper part of the water tub, and is caused by frictional force or unevenness generated between the rotating wing and the laundry by rotating the rotating blade forward and reverse. The laundry is washed by the vertical component force and the stirring of the washing water.

  In the rinsing step, the tap water is supplied after draining the washing water, and the tap water is circulated so as to fall on the laundry from the upper part of the water tub by the washing water circulating means, and the rotating blade is rotated forward and reverse to rotate the rotating blade. Rinsing is performed to extrude the detergent components attached to the laundry by agitating the washing water and the vertical component force generated by the frictional force or unevenness generated between the laundry and the laundry.

  Then, in the drying step, the humid air inside the outer tub is sucked out while rotating the rotating blades in the forward and reverse directions, heated after water-cooled dehumidification, and circulated while being blown into the outer tub again to dry the laundry. Let it.

  FIG. 1 is a perspective view showing an external appearance of an electric washing machine according to an embodiment of the present invention, showing a state in which a lid is closed, and FIG. 2 is a view showing a state in which the lid can be opened and laundry can be taken in and out. I have. FIG. 3 is a top view showing the appearance of the electric washing machine, and FIG. 4 is a longitudinal sectional view showing the internal structure, and shows an AA section in FIG.

  At the upper part of a rectangular cylindrical housing 2 forming the outer shell of the washing machine main body 1, there is provided a laundry input port 3 which is an opening on the upper surface, and a top cover 4 forming the upper part of the washing machine main body 1 is placed thereon. I have. The top cover is formed of, for example, an ABS (acrylonitrile-butadiene-styrene) resin, a PP (polypropylene) resin, or the like.

  On the upper surface of the top cover 4, a cover 5 that can be opened and closed along a cover support shaft 6 is provided so as to cover the laundry input port 3. The lid 5 has a substantially quadrangular, substantially thin plate shape, and includes a front side, a rear side, a right side, and a left side. The lid support shaft 6 is provided along the rear side of the lid 5, and a handle 7 for an operator to attach a finger is provided along the front side of the lid 5.

  A portion of the top cover 4 behind the lid 5 is covered with a back cover 4a.

  A lock receiving recess 8 is opened in front of the laundry inlet 3 of the top cover 4 on the right side. Locking means 9 is provided adjacent to the lock receiving recess 8. The lock means 9 performs an operation of projecting or retracting the rod 9a movably supported in the left-right direction into the lock receiving recess 8 by a drive source such as a solenoid or a motor (not shown) according to an instruction of the control means.

  The lid 5 is provided with a lock receiving projection 11 having a lock receiving hole 10 into which the rod 9a can be inserted, provided on the side. The lock receiving projection 11 is inserted into the lock receiving recess 8 when the lid 5 is closed, and when the locking means 9 operates, the rod 9a fits into the lock receiving hole 10 and the lid 5 does not open. It is configured to be locked.

  A detergent case 13 which is a concave portion covered with an openable / closable detergent case cover 12 is provided on the left end side of the front side of the top cover 4, and is divided into a detergent input chamber, a softener input chamber, and the like. After opening the detergent case cover 12, the user puts a predetermined amount of powder detergent, liquid detergent or softener into the detergent case 13.

  The detergent case 13 is connected to a detergent / softener inlet 14 and supplies a detergent and a softener into the outer tub 15.

  On the upper surface of the top cover 4 behind the rear side of the lid 5, a water supply port 16 connected to a water supply (not shown) via a hose is provided. A water supply solenoid valve 17 is connected to the water supply port 16 to supply water according to an instruction from a control system. As an example, a four-way valve for supplying water in four directions will be described as the water supply electromagnetic valve 17. The first is a washing water supply electromagnetic valve, which is connected to a water supply inlet and supplies water into the water tank 18. The second is a detergent water supply solenoid valve, which is connected to the detergent charging chamber of the detergent case 13. The third is a softener supply electromagnetic valve, which is connected to the softener charging chamber of the detergent case 13. The fourth is connected to the dehumidifying mechanism 19.

  An operation panel 20 is provided along the front side of the top cover 4, and includes a power switch, operation buttons for performing operations such as selecting a process such as washing and drying or setting a washing time, and further includes, for example, a liquid crystal device and a light emitting device. Display means is provided.

  The outer tub 15 for storing the washing water is supported by vibration isolation so as to be located at the center of the housing 2 by a hanging rod 21 having a spring and a damping means suspended from four corners of the upper surface of the housing 2. A water tub 18 for washing and dewatering is rotatably provided inside the tub 15, and a rotating wing 22 is rotatably provided on the bottom surface of the water tub 18.

  Through holes 18a and 18b are provided on the outer peripheral wall surface and the bottom surface of the water tank 18 for water flow and ventilation, and a fluid balancer, which is a vibration isolating means containing a fluid, is provided on an outer circumference of an opening at an upper end of the water tank 18. 23 are provided.

  Irregularities are provided on the upper surface of the rotary wing 22, and washing is performed by agitating the washing water and applying a vertical or rotational component to the laundry put on the upper surface of the rotary wing 22. The water tank 18 and the rotating blades 22 are selectively rotated by an electromagnetically operated clutch 25 via a speed reduction mechanism from a drive mechanism, for example, an inverter type drive motor 24. That is, by controlling the drive motor 24 and the electromagnetic operation clutch 25, a washing drive mode in which the water tub 18 repeats forward and reverse rotations of the rotary wing 22 in a state where the water tub 18 is closed or freely rotatable, and It is possible to switch between a dehydration driving mode in which the blades 22 are integrally rotated continuously in the same direction.

  An air trap 26 is provided on the bottom surface of the outer tub 15, and the internal pressure is transmitted to a water level sensor 27 via a tube to detect the level of the washing water in the outer tub 15.

  A vibration sensor 28 is provided on the outer side surface of the outer tub 15, and detects vibration of the outer tub 15 during washing or dehydration.

  The upper surface of the outer tank 15 is covered with a tank cover 29. The laundry inlet 3 is open in a range of about 2/3 from the front side of the tub cover 29, and is covered by the inner lid 30. The inner lid 30 is rotatably supported around a hinge 31 provided at the rear of the inner lid 30, and the lock (not shown) of the inner lid 30 is released by opening the handle 71 to open. . When the handle 71 is pressed downward after the inner lid 30 is closed, the structure is locked.

  A hot air outlet 32, a water supply inlet 33, and a circulating water inlet 34, which communicate with the lower surface of the upper surface of the tank cover 29, are provided on the rear side of the tank cover 29. On the front side of the tank cover 29, a detergent / softener inlet 14 is provided.

  A water flow vent 35 is opened on the bottom surface of the outer tub 15, and is connected via a drying duct 36 to the hot air outlet 32 provided on the upper surface of the outer tub 15. In the middle of the drying duct 36, a blower fan 37, a heater 38, a lint filter 39, a dehumidifying mechanism 19, and a temperature sensor 40 are provided. When the fan 38 is energized and rotated, and the heater 38 is energized and heated, warm air is blown into the water tub 18 to heat the laundry and evaporate the moisture. The hot and humid air exits through the through-holes 18a and 18b of the water tank 18 into the outer tank 15, and flows into the drying duct 36 through the water passage vent 35. The water is cooled and dehumidified by the cooling water flowing through the dehumidifying mechanism 19, is heated again by the heater 38, turns into dry warm air, is blown into the water tank 18 again from the warm air outlet 32 and circulates.

  The rubber bellows tubes 41a, 41b, 41c, 41d, 41e are provided with the outer tank 15 and the tank cover 29 which are displaced by vibration, the water supply electromagnetic valve 17 provided on the fixed housing 2, the top cover 4, and the like. It is used for connection with the duct 36, the circulation pump 42 and the like.

  A circulation pipe 43 connects between a water passage vent 35 provided on the bottom surface of the outer tank 15 and a circulating water inlet 34 provided at the rear of the upper surface of the tank cover 29. In the middle of the circulation pipe 43, a circulation pump 42 provided near the bottom of the washing machine body 1 and a foreign matter trap 44 for collecting foreign matter contained in the circulating water are provided. Is connected.

  When the circulation pump 42 is operated, the washing water in the outer tub 15 passes through the circulation pipe 43 from the water passage vent 35 on the bottom surface of the outer tub 15, passes through a lint filter (not shown) to remove lint, and then the nozzle. From 47, it is sprayed into the water tank 18.

  Next, the structure of the lid 5 and the lid supporting shaft 6 will be described with reference to FIGS.

  FIG. 5 is a perspective view of the state in which the lid 5 is opened as viewed from the inside, and shows the cover near the lid support shaft 6 through the cover so that the structure of the lid support shaft 6 can be seen. Since the notation of up, down, left, right, front and rear in the figure indicates the direction of the washing machine main body, in the state of FIG.

  FIG. 6 is a sectional view taken along the line BB in FIG.

  7A and 7B are cross-sectional views taken along the line C-C in FIG. 6, wherein FIG. 7A shows the lid 5 in an open state, and FIG. 7B shows the lid 5 in a closed state.

FIG. 8 is a cross-sectional view taken along the line DD of FIG.
The lid 5 has a substantially symmetrical shape, and a pair of components such as a spring and a damper are provided symmetrically. Therefore, the right component is denoted by a and the left component is denoted by b.

  The lid body 5 is provided with a resin lid lower surface cover 49 so as to cover the lower surface of the substantially quadrangular cover glass 48 and the end surfaces of the front side, left side, and right side. A cover rear cover 50 is provided along the rear side of the cover glass 48, and is provided so as to cover the rear side of the cover glass 48 from the lower surface to the upper surface. Further, a cover hinge cover 51 having a smaller width in the left-right direction than the cover lower surface cover 49 is provided so as to cover the lower surface of the cover support shaft 6 of the cover glass 48.

  On the lower surface of the lid lower cover 49, for example, a highly rigid reinforcing metal fitting 52, which is a sheet metal component obtained by bending an iron plate, is provided, and is fastened to the boss 53 planted integrally with the lid lower cover 49 by a screw 66. Is done. A part of the reinforcing bracket 52 is bent in a direction away from the cover glass 48 at a right angle and perpendicular to the rotation axis of the cover support shaft 6, and a pair of left and right is set at a position serving as a rotation center of the cover support shaft 6. Are provided with through holes for the support shafts 54a and 54b. The pair of left and right support shafts 54a and 54b are attached to the reinforcing metal fitting 52 in a state of penetrating the coil-shaped cover springs 55a and 55b, respectively, and serve as rotation axes of the cover support shaft 6.

  A hinge having an inner surface, an outer surface, and a lower surface having a pair of upward substantially U-shaped portions in a range inside the left and right side surfaces of the lid body 5 and outside the left and right end surfaces of the lid hinge cover 51. Metal fittings 56a and 56b are provided. Through holes for the support shafts 54a and 54b and spring receiving holes 67a and 67b are provided in the inner and outer surfaces of the hinge fittings 56a and 56b, respectively.

  Support shafts 54a and 54b are respectively supported through the inner side surface and the outer side surface of the pair of left and right hinge fittings 56a and 56b, and the lower surface thereof is provided in concave portions 57a and 57b provided near the left and right side surfaces of the top cover 4. On the other hand, it is fastened and fixed by screws.

  The first extending portions 58a, 58b, which are one ends of the pair of lid springs 55a, 55b, which are torsion springs provided with coil portions, are located on the sides closer to the inside of each other. And is brought into contact with the reinforcing metal fitting 52 from the lower surface side of the lid 5 in a direction for applying a torque in the opening direction to the lid 5. On the other hand, the other ends of the pair of lid springs 55a and 55b facing outward from each other extend in a direction away from the central axis of the coil part of the lid springs 55a and 55b, and then extend in parallel with the central axis of the coil part. The second extension portions 59a and 59b are bent in a direction away from the coil portion. The second extending portions 59a and 59b extend in directions in which the second extending portions 59a and 59b are separated outward from each other along the support shafts 54a and 54b. The second extending portions 59a, 59b pass through both side surfaces of the inner and outer surfaces of the hinge fittings 56a, 56b at spring receiving holes 67a, 67b opened at positions different from the support shafts 54a, 54b, It is supported at two points.

  Since the second extending portions 59a, 59b are configured to penetrate both sides of the inner side surface and the outer side surface of the hinge fittings 56a, 56b and are supported at two points, the opening and closing operation of the lid 5 causes the lid spring 55a, Even when a torsional torque is applied to 55b, the second extending portions 59a and 59b are stably supported at two points while maintaining parallel to the support shafts 54a and 54b. Therefore, the spring constants of the lid springs 55a and 55b are stabilized irrespective of the load, and the second extension portions 59a and 59b are not excessively deformed and excessive stress is not generated, so that the reliability is high. There is.

  The second extending portions 59a, 59b of the lid springs 55a, 55b are fixed to the top cover 4 via hinge fittings 56a, 56b, and the first extending portions 58a, 58b of the lid springs 55a, 55b are reinforced. Since the cover 5 is provided on the cover 5 with the metal fitting 52 interposed therebetween, the cover 5 is configured to receive rotational torque in the direction of opening the cover 5 around the support shafts 54a and 54b by the cover springs 55a and 55b.

  A pair of rotary dampers 60a, 60b are provided coaxially with the support shafts 54a, 54b, near the left and right centers of the lid 5, and inside the support shafts 54a, 54b. The rotary dampers 60a, 60b enclose, for example, high-viscosity silicon grease between the damper main bodies 61a, 61b and the damper shafts 62a, 62b rotatable within a predetermined angle range to generate a viscous resistance torque. Configuration. The damper bodies 61a and 61b are provided on a cover boss provided on the cover lower surface cover 49 so as to rotate integrally with the lid body 5 through damper stopper portions 69a and 69b extending from the damper bodies 61a and 61b in a direction away from the rotation axis. It is fastened with screws 66 and attached. As an example, the damper shafts 62a and 62b have a substantially oval cross-sectional shape in which two opposing surfaces of the cylindrical surface are cut off in a plane.

  One of the pair of rotary dampers 60a and 60b is a first damper 60a that generates viscous resistance when the lid 5 is opened, and the other is a second damper that generates viscous resistance when the lid 5 is closed. If it is 60b, viscous resistance is generated by the rotary damper 60a or the rotary damper 60b in both the opening operation and the closing operation of the lid 5. In particular, even when the lid 5 has a single-panel structure provided with the lid glass 48 and has a large mass as compared with the lid 5 made of resin, the attenuation by the rotary dampers 60a and 60b is reduced over the entire range of the opening / closing operation. The opening / closing operation of the lid 5 can be performed at a low speed, and the lid 5 does not close suddenly or open abruptly in the vicinity of full opening, so that a smooth and stable opening / closing operation of the lid 5 is realized. It is preferable because it can be performed.

  Furthermore, the viscous resistance of one rotary damper 60a and the other rotary damper 60b may not be the same.

  A damper receiving portion 63 extending upward to a position coaxial with the lid support shaft 6 is provided at the left and right central portions of the top cover 4 so as not to rotate with the substantially oval-shaped damper shafts 62a and 62b. Fits. The details of the configuration of the damper receiving portion 63 and the damper shafts 62a and 62b will be described later.

  Since the damper shafts 62a and 62b of the pair of rotary dampers 60a and 60b are arranged close to each other so as to face each other toward the left and right centers of the lid 5, only the pair of damper shafts 62a and 62b are provided at the left and right central portions. This is a configuration that can be fitted to the two damper receiving portions 63. Therefore, since the lid 5 is supported at the three locations of the hinge fittings 56a and 56b at the left and right ends and the damper receiving portion 63 at the center, the accuracy of the rotation axis of the lid supporting shaft 6 can be easily obtained, and Since the body 5 is hardly bent or deformed, the opening and closing operation of the cover 5 is stabilized.

  Next, a procedure for attaching the lid 5 to the top cover 4 will be described with reference to FIGS. 9 to 10 and further appropriately referring to FIGS.

  FIG. 9 is an exploded perspective view showing a procedure for attaching the lid 5 to the top cover 4.

  FIG. 10 is a cross-sectional view taken along the line E-E showing a configuration near the rotary dampers 60a and 60b when the lid 5 is attached to the top cover 4. FIG. 10A shows a state before the lid is attached, and FIG. 10B shows a state after the lid is attached.

  As shown in FIGS. 5 to 9, the assembled state before the cover 5 is attached to the top cover 4 is such that the handle 7 serving as a handle for the opening operation is integrally formed with the cover lower cover 49 attached to the cover glass 48. A pair of support shafts 54a and 54b, lid springs 55a and 55b, and a pair of rotary dampers 60a and 60b are provided along the rear side of the lid 5 via the reinforcing metal fitting 52 or the boss 53. The lid support shaft 6 is attached to the cover lower surface cover 49 via the hinge fittings 56a, 56b at the left and right ends and the support shafts 54a, 54b. The inside of the left and right hinge fittings 56a, 56b is covered with a lid hinge cover 51. The central portion of the lid hinge cover 51 is cut out, and the damper shafts 62a and 62b of the rotary dampers 60a and 60b are exposed inward.

  The pair of hinge fittings 56a and 56b are rotatably supported on the left and right outer sides of the lid hinge cover 51 and around the support shafts 54a and 54b while receiving the rotational torque generated by the lid springs 55a and 55b. . Since the cover 5 receives the rotational torque in the direction of opening the cover 5 around the support shafts 54a and 54b by the cover springs 55a and 55b, the cover 5 is covered with the top cover as shown in FIGS. In a state before the cover 5 is attached to the cover 4, the cover 5 contacts the stopper (not shown) with respect to the hinge fittings 56a and 56b and is in a fully opened position.

  Therefore, as shown in FIGS. 9 to 10A, when the lid 5 is in the fully opened position, a positional relationship suitable for attaching the hinge fittings 56a and 56b to the top cover 4 is obtained. The top cover 4 is provided with concave portions 57a, 57b for receiving the hinge fittings 56a, 56b, and the convex portions 64a, 64b at the front ends of the hinge fittings 56a, 56b are provided at the front ends of the concave portions 57a, 57b of the top cover 4, After being inserted into the top cover 68b, the hinge fittings 56a, 56b are screwed to the boss 65 provided on the lower surface of the concave portions 57a, 57b of the top cover 4.

  The periphery of the recesses 57a and 57b of the top cover 4 is surrounded by a standing wall connected to the top surface of the top cover 4 and a downward wall forming the side wall of the laundry inlet 3, so that the rigidity is lower than that of a flat plate. Since it is high, the top cover 4 does not require a reinforcing member formed of, for example, an iron plate. The hinge fittings 56a and 56b need only be fixed to the boss 65 forming a part of the top cover 4 with tapping screws, and have a simple configuration. Sufficient strength is obtained.

  The damper receiving portion 63 provided on the top cover 4 will be described in detail. The upper surface of the damper receiving portion 63 is opened so as to fit with the oval-shaped damper shafts 62a and 62b as described above. A substantially U-shaped groove is provided. If the damper shafts 62a, 62b of the rotary dampers 60a, 60b are lowered from just above when the lid 5 is mounted, the damper shafts 62a, 62b are inserted into the damper receiving portion 63 as shown in FIG. It is arranged in the fitting direction. Here, when the lid 5 opens and closes, the rotary damper bodies 61a and 61b rotate together with the lid 5, while the damper shafts 62a and 62b do not rotate. Can be slow.

  After the hinge fittings 56a and 56b are attached to the recesses of the top cover 4 and screwed, the hinge covers 70a and 70b that cover the recesses of the top cover 4 are attached. The hinge covers 70a and 70b may be fixed by a so-called snap fit, which is a fixing claw using, for example, elastic deformation of a resin material. If the upper surface after attaching the hinge covers 70a and 70b is made to be flush with the upper surface of the top cover 4, there is no step or the like, so that dirt is less likely to be formed, and detergent or water is applied to the hinge fittings 56a and 56b. Adhesion can be prevented. Further, the screws 66 for attaching the hinge fittings 56a and 56b can be hidden.

  FIGS. 2, 8 and 10B show a state in which the hinge fittings 56a and 56b are attached to the recesses of the top cover 4 and screwed, and then the hinge covers 70a and 70b are attached.

  As shown in FIG. 2, after the lid 5 is attached to the top cover 4, the boundary surface between the fixed portion and the rotating portion related to the opening / closing operation of the lid 5 is the damper shaft 62 a of the rotary dampers 60 a and 60 b. 62b is only in the central portion fitted to the damper receiving portion 63, and between the left and right outer side surfaces of the lid hinge cover 51 and the inner side surfaces of the hinge covers 70a and 70b. Since the number of sliding surfaces at the boundary between the fixed part and the rotating part is small, it is easy to ensure the accuracy of the gap size, and there is no frictional load due to contact with each other. The opening and closing operation of the lid 5 is smooth, and the detergent and water do not enter the inside of the lid 5 from the gap and adhere to the support shafts 54a and 54b and the lid springs 55a and 55b, and the opening and closing operation of the lid 5 is stable. There is an effect of doing.

  Here, the width in the left-right direction of the lid 5 is larger than the width in the left-right direction of the concave portions 57a, 57b provided in the top cover 4. Then, when the lid 5 is closed, the boundary between the hinge covers 70a, 70b covering the recesses 57a, 57b and the top cover 4 is located inside the left and right side surfaces of the lid 5, so that the detergent or the like is not covered by the hinge cover. There is an effect that it is difficult to intrude from the boundary between the top cover 4 and the top cover 4.

  Here, since the second extending portions 59a and 59b are arranged so as to be provided on the inner peripheral side of the lid hinge cover 51 in the entire angle range of the opening / closing operation of the lid 5, even if the lid 5 is rotated, the lid is rotated. Both the first extension portions 58a and 58b and the second extension portions 59a and 59b of the body springs 55a and 55b do not project to the outer periphery of the lid hinge cover 51 or the hinge covers 70a and 70b. Therefore, since the lid 5 does not require a groove or the like for preventing interference with the ends of the lid springs 55a and 55b, it is possible to prevent the detergent or water from entering from the groove and prevent the rust of the spring. effective.

  Next, the relationship between the weight of the lid 5 and the torsion torque by the lid springs 55a and 55b will be described with reference to FIG.

  FIG. 11 is a side view showing the relationship between the opening angle of the lid 5, the center of gravity of the lid 5, and the opening / closing force at the tip of the lid 5.

  In FIG. 11, a lid 5 having a mass m and a length L in the front-rear direction generates a force mg at the center of gravity G, where g is the gravitational acceleration. When the lid 5 is closed, the angle of the lid 5 is θ1 and the front end is lower than horizontal, so θ1 is a negative value, for example, −10 °.

Here, the distance from the support shafts 54a, 54b, which are the rotation centers of opening and closing, to the center of gravity G is R1, the opening torque generated by the lid springs 55a, 55b is T1, and the closing force generated at the tip of the lid 5 is T1. Assuming F1, than the moment balance,
F1 × L = mg × R1-T1 (Equation 1)
That is, the tip force F1 required to open the lid 5 is
F1 = (mg × R1-T1) / L (Equation 2)
Becomes

Alternatively, the torque T1 generated by the lid springs 55a and 55b at that time is:
T1 = mg × R1-F1 × L (Equation 3)
It is expressed as

  Here, as an appropriate value of F1, for example, a force of about 5N to 7N is required in order for the lid body 5 to be stably mounted on the top cover 4 even with the vibration in the dehydration step. . According to the mass of the lid 5 and the position of the center of gravity, the torque T1 of the lid springs 55a and 55b can be obtained such that F1 has a predetermined value when the opening angle of the lid 5 is θ1.

  When the angle of the lid 5 becomes θ2, for example, 60 °, the moment due to its own weight (mg × R2) and the moment due to the torsion spring (T2) are in a state of being balanced. That is, when the opening angle of the lid 5 is smaller than θ2, the closing moment due to the own weight of the lid 5 overcomes the moment by the lid springs 55a and 55b, and the lid 5 closes.

  On the other hand, when the opening angle of the cover 5 is larger than θ2, the moment by the cover springs 55a and 55b overcomes the closing moment due to the weight of the cover 5, and the cover 5 opens.

That is,
T2 = mg × R2 (Equation 4)
The moment T2 by the lid springs 55a and 55b when the opening angle of the lid 5 is θ2 may be set such that

  When the lid 5 is fully opened to reach the angle θ3, the lid 5 is inclined backward, for example, by about 10 ° from the vertical. In this case, the center of gravity G is behind the support shafts 54a and 54b, and the cover 5 maintains the fully open state due to the tip force F3 generated in the opening direction.

At this time, the moment due to its own weight (mg × R3) and the moment due to the torsion spring (T3) are both generated in the opening direction,
F3 × L = mg × R3 + T3 (Equation 5)
It is expressed as That is, F3 = (mg × R3 + T3) / L (Equation 6)
Becomes

  The moment (T3) is a moment generated by the lid springs 55a and 55b when the lid 5 is fully opened, that is, as shown in FIGS. This is nothing but torsion torque generated by the lid springs 55a and 55b when the cover is attached to the cover 4.

  Here, when the opening angle of the lid 5 is θ2, the spring constant is selected so that the own weight of the lid 5 and the torque by the lid springs 55a and 55b are balanced. When the lid 5 is opened more than that, it is desirable that the torque of the spring overcomes its own weight and opens automatically. Such a characteristic is obtained by making the spring constant relatively small. As a result, even when the lid 5 is fully opened and the angle θ3, the torque T3 by the lid springs 55a and 55b causes the lid 5 to move. Work in the opening direction.

  If the spring constant is larger than desired characteristics, for example, when the opening angle of the lid 5 is θ2, the weight of the lid 5 and the torque T2 by the lid springs 55a and 55b are balanced, and the angle becomes θ3 when fully opened. If the torque by the lid springs 55a and 55b is set to be 0 when the lid 5 is opened slightly from θ2, the torque by the lid springs 55a and 55b rapidly decreases. This is because the moment due to the weight of the lid 5 cannot be overcome, and the lid 5 cannot return to the opening direction by the spring force and returns to the angle θ2 again.

  That is, when the opening angle of the lid 5 is θ1, a torque T1 determined by (Equation 3) is generated, and when the opening angle of the lid 5 is θ2, a torque T2 determined by (Equation 4) is generated. With 55a and 55b, the biasing force in the opening direction or the closing direction can be switched at a predetermined angle θ2 during the opening and closing rotation of the lid without using a so-called toggle spring, so that the number of parts is small. There is an effect that a washing machine provided with a lid 5 having a simple structure and easy to use can be obtained.

  FIG. 12 is a block diagram of the control device 80 of the washing and drying machine. Reference numeral 81 denotes a microcomputer, which is connected to an operation button input circuit 82, a water level sensor 27, and a temperature sensor 40 which are connected to switches (not shown), and receives various information signals in a button operation by a user, a washing process, and a drying process. The output from the microcomputer 81 is connected to the drive circuit 83, and is connected to the water supply solenoid valve 17, the drain valve 45, the drive motor 24, the blower fan 37, the heater 38, the electromagnetic operation clutch 25, the lock means 9, and the like. Controls opening, closing, rotation, and energization. Further, it is connected to a display 84 such as a 7-segment light emitting diode, a buzzer 85, and a light emitting diode 87 for notifying the user of the operation state of the washing machine. The microcomputer 81 is activated when the power switch 86 is pressed and the power is turned on, and executes a basic control program for washing and drying as shown in FIG.

  Step S101 The state of the electric washing machine is confirmed and the initial setting is performed.

Step S102: The display 84 of the operation panel 20 is turned on, and a washing / drying course is set according to an instruction input from an operation button switch (not shown). When there is no instruction input, a standard washing / drying course or a previous washing / drying course is automatically set. For example, when an operation button switch is input, a high finishing course for drying is set.

  Step S103 The process branches by monitoring an instruction input from a start switch (not shown) of the operation panel 20.

  Step S104: A detergent amount is detected. Before supplying the washing water, the electromagnetic operation clutch 25 and the drive motor 24 are controlled so that only the rotor 22 is rotated in one direction while the water tub 18 is stopped, and based on the rotational load generated on the rotor 22. Detect the amount of cloth. The required detergent amount is determined based on the detected cloth amount.

  Step S105: The determined detergent amount is displayed on the display 84 of the operation panel 20.

  Step S106 When the user puts a necessary amount of detergent into the detergent case 13, the detergent water supply solenoid valve 17 is opened, and water is supplied to the detergent supply chamber of the detergent case 13. The powder detergent introduced into the detergent introduction chamber falls from the detergent / softener introduction port 14 to the bottom of the outer tub 15 together with the detergent supply water.

  Step S107 When the water is supplied to the detergent melting water level, the detergent water supply is stopped. The water supply amount at this time is, for example, about 10 L.

  In step S108, the water tank 18 and the rotating blades 22 are integrally rotated at a low speed in one direction, so that the detergent and the detergent-dissolved water charged into the bottom of the outer tank 15 at the bottom of the water tank 18 are stirred to obtain a high-concentration water. Perform detergent dissolution to generate washing water.

  Step S109 The pre-wash is executed. In this pre-washing, the stirring for rotating the rotary blades 22 in the forward and reverse directions is performed intermittently with the water tank 18 stopped, and during this time, the circulating pump 42 is operated to wash the water at the bottom of the outer tank 15 from the nozzle 47. Sprinkle on the laundry. While the rotating blades 22 and the circulation pump 42 are stopped, the detergent water supply solenoid valve 17 and the washing water supply solenoid valve 17 are opened while referring to the detection signal of the water level sensor 27 to supply water so that the water level does not exceed the set water level. I do. This operation is repeated a plurality of times so that the laundry is adapted to the washing water and dispersed on the rotating blades 22.

  Step S110 Perform a main wash. In the main washing, the circulating pump 42 is operated while rotating the rotor 22 in the normal and reverse directions with the water tub 18 stopped, and the washing water accumulated at the bottom of the outer tub 15 is sprinkled from the nozzle 47 onto the laundry. The agitation for circulating the water and the cloth loosening agitation for rotating the rotating blades 22 in the forward and reverse directions with the circulation pump 42 stopped to stop the circulation of the washing water are repeated. By the forward / reverse rotation of the rotary wing 22, the laundry is replaced in the water tub in the circumferential direction and the radial direction, and is washed evenly.

  Thereafter, in a state where the circulation pump 42 is stopped to stop the circulation of the washing water, the rotating blades 22 are continuously rotated in the normal and reverse directions to perform uniform stirring.

  Step S111 The first rinsing is performed. In this rinsing, first, the drain valve 45 is opened, and the washing water accumulated at the bottom of the outer tub 15 is contained in the laundry by rotating the water tub 18 and the rotating blades 22 in one direction in the ground under the drainage. Centrifuge dewatering of washing water. Thereafter, while the drain valve 45 is closed and the water tub 18 and the rotary blade 22 are integrally rotated at a low speed in one direction, the washing water supply electromagnetic valve is opened to sprinkle tap water from the nozzle 47 onto the laundry on the rotary blade. Water.

  Next, with the rotation of the water tank 18 and the rotary blades 22 stopped, rinsing water is supplied so that the water level at the bottom of the outer tank 15 does not exceed the set water level.

  Next, in the same manner as in the main washing, the circulating pump 42 is operated while rotating the rotating blades 22 in the forward and reverse directions with the water tank 18 stopped, and the rinse water accumulated at the bottom of the outer tank 15 is discharged from the nozzle 47 through the rotating blades 22. Perform a water rinse with water rinse, circulating over the laundry above.

  Next, while the operation of the rotary blades 22 and the circulation pump 42 is stopped, water is supplied so that the water level does not exceed the set water level while detecting the water level of the rinsing water accumulated at the bottom of the outer tank 15.

  Next, the circulating pump 42 is operated while rotating the rotor 22 in the normal and reverse directions with the water tank stopped, and the rinse water accumulated at the bottom of the outer tub 15 is transferred from the nozzle 47 to the laundry on the rotor 22. Circulate as if sprinkled. As in the case of washing, the laundry in the water tub 18 is replaced in the circumferential direction and the radial direction, so that the rinsing water is evenly applied to the laundry, and the detergent is diluted.

  Thereafter, in a state where the circulation pump 42 is stopped and the circulation of the rinsing water is stopped, the rotating blades 22 are continuously rotated in the normal and reverse directions to perform uniform stirring.

  Step S112 The second rinsing of the reservoir is performed. This second rinsing of the reservoir is performed by adding a control for introducing the softener to the bottom of the outer tub 15 by opening the softener supply electromagnetic valve 17 and supplying water to the softener input chamber in the detergent case 13. The operation is performed in the same manner as the first rinsing of the reservoir.

  Step S113 A final dehydration process is performed. In the final dehydration, the water tub 18 and the rotary blade 22 are integrally rotated at a high speed in one direction while the drain valve 45 is kept open, and the laundry in the water tub 18 is centrifugally dehydrated.

  Step S114: It is confirmed whether or not the washing / drying course is selected, and the process branches.

  Step S115 If the washing / drying course is selected, a drying step is performed. In the drying step, while the drain valve 45 is open, the water fan 18 is stopped and the rotating blades 22 are rotated in the normal and reverse directions as in the washing step, and the blowing fan 37 is operated so that the height inside the outer tub 15 is increased. The humid air is sucked into the drying duct 36 from the water vent hole 35, and is cooled and dehumidified by the cooling water flowing down from the water-cooling and dehumidifying mechanism 19 installed in the drying duct 36 when passing through the drying duct 36. Thereafter, after removing the lint through a lint filter 39, the lint is heated by the heater 38 and blown into the water tank 18 from the hot air outlet 32.

  Drying is performed while monitoring the temperature of the hot air with the temperature sensor 40, and ends when the rate of temperature change reaches a predetermined value.

  In the present embodiment, the washing and drying machine having the drying function is described, but an electric washing machine without the drying function may be used.

  According to the present embodiment, the biasing force in the opening direction or the closing direction can be switched at a predetermined angle during the opening / closing rotation operation of the lid without using the toggle spring, so that the number of parts is small and the structure is small. Thus, there is an effect that a washing machine having the lid 5 which is simple and easy to use can be obtained.

  According to the present embodiment, even when the lid 5 is rotated, both the first extended portions 58a, 58b and the second extended portions 59a, 59b of the lid springs 55a, 55b are connected to the lid hinge cover 51 or the hinge. Since the cover 5 does not protrude to the outer periphery of the covers 70a and 70b, the cover 5 does not need a groove or the like for preventing interference with the cover springs 55a and 55b. Has the effect that it does not rust.

  According to the present embodiment, the second extending portions 59a, 59b of the lid springs 55a, 55b are further extended in the axial direction of the lid springs 55a, 55b, and the inner surfaces of the hinge fittings 56a, 56b and the outer side. Since it is configured to penetrate both side surfaces with the side surface and supported at two points, the second extending portions 59a and 59b are stably supported at two points even when torsional torque is applied to the lid springs 55a and 55b. . Accordingly, the spring constants of the lid springs 55a and 55b are stabilized irrespective of the load, and there is an effect that excessive stress is prevented from being generated in the second extending portions 59a and 59b of the lid springs 55a and 55b.

  According to the present embodiment, the lid 5 can be further supported at the three hinge metal fittings 56a and 56b at the left and right ends and the damper receiving portion 63 at the center, so that the accuracy of the rotation axis of the lid 5 can be improved. And the lid 5 is less likely to bend or deform, so that the opening and closing operation of the lid 5 is stabilized.

  According to the present embodiment, since the concave portions 57a and 57b provided on the left and right side surfaces of the top cover 4 are not flat but have high rigidity, the top cover 4 does not require a reinforcing member formed of, for example, an iron plate. There is an effect that sufficient strength can be obtained with a simple configuration.

  According to the present embodiment, further, one of the pair of rotary dampers 60a and 60b is configured to apply a viscous resistance torque when the cover 5 is opened, and the other is configured to be viscous when the cover 5 is closed. By adopting a configuration in which the resistance torque acts, the opening / closing operation of the lid 5 can be slowed down, and the lid 5 does not close suddenly or does not open suddenly in the vicinity of full opening, and is stable. There is an effect that the opening and closing operation of the lid 5 can be performed.

  According to the present embodiment, the hinge fittings 56a and 56b serving as the rotation fulcrum of the lid 5 are further housed in the concave portions 57a and 57b provided on the left and right side surfaces of the top cover 4, and the upper surfaces are covered with the hinge covers 70a and 70b. With this configuration, the hinge fittings 56a and 56b are not exposed to detergent or water, and the hinge fittings 56a and 56b are not rusted, so that a highly reliable washing machine can be provided.

DESCRIPTION OF SYMBOLS 1 Washing machine main body 2 Housing 3 Laundry inlet 4 Top cover 4a Back cover 5 Lid 6 Lid support shaft 7 Handle part 8 Lock receiving concave part 9 Lock means 9a Rod 10 Lock receiving hole 11 Lock receiving protrusion 12 Detergent case cover 13 Detergent case 14 Detergent / softener inlet 15 Outer tub 16 Water supply port 17 Water supply solenoid valve 18 Water tub 18a Through hole 18b Through hole 19 Dehumidifying mechanism 20 Operation panel 21 Hanging rod 22 Rotating blade 23 Fluid balancer 24 Drive motor 25 Electromagnetic operation clutch 26 Air trap 27 Water level sensor 28 Vibration sensor 29 Tank cover 30 Inner lid 31 Hinge 32 Hot air outlet 33 Water supply inlet 34 Circulating water inlet 35 Water flow vent 36 Drying duct 37 Ventilation fan 38 Heater 39 Lint filter 40 Temperature sensor 41 Bellows Pipe 42 Circulation pump 43 Circulation pipe 44 Foreign matter trap 45 Discharge Water valve 46 Drain hose 47 Nozzle 48 Cover glass 49 Cover lower cover 50 Cover rear cover 51 Cover hinge cover 52 Reinforcement fittings 53 Bosses 54a, 54b Support shafts 55a, 55b Lid springs 56a, 56b Hinge fittings 57a, 57b Recessed portions 58a, 58b First extension portions 59a, 59b Second extension portions 60a, 60b Rotary damper
61a, 61b Damper main body 62a, 62b Damper shaft 63 Damper receiving portion 64a, 64b Convex portion 65 Boss 66 Screw 67a, 67b Spring receiving hole 68a, 68b Groove 69a, 69b Damper stopper 70a, 70b Hinge cover 80 Control device 81 Microcomputer 82 operation button input circuit 83 drive circuit 84 display 85 buzzer 86 power switch

Claims (3)

A water tank having an opening on the top surface and a rotor on the bottom surface,
A lid that covers the opening when closed,
A spring for applying a torque in an opening direction to the lid at least when the lid is closed,
The lid is a washing machine having a plate-shaped lid glass of a single sheet. The washing machine according to claim 1, wherein
A washing machine for applying a torque in an opening direction when the spring is fully opened. The washing machine according to claim 1 or 2,
The washing machine according to claim 1, wherein, when the lid is closed, the lid descends from the rear end toward the front end.

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