JPH0824791B2 - Washing machine lid opening and closing device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a lid opening / closing device for a washing machine for washing clothes and the like.

2. Description of the Related Art The structure of a conventional washing machine will be described with reference to FIG.

A water tub 4 having a washing tub 2 and a dehydrating tub 3 is arranged in an outer casing 1 of a washing machine, a washing lid 5 is provided at an opening of the washing tub 2, and an inner lid 6 is provided at an opening of the dehydrating tub 3. Dehydration lids 8 are respectively covered through the dewatering hatches 7, and the dehydration lids 8 are hinged shafts (not shown) in a panel box 9 attached to the rear portion of the water tank 4.
The laundry lid 5 was rotatably supported via a shaft and was detachably installed.

Problems to be Solved by the Invention In recent years, in particular, there has been a tendency for the diameter of the stirring blade to increase with the increase in the capacity of laundry, and in order to reduce the entanglement and cloth damage of clothes, A cleaning method based on time-reversed reversal is becoming mainstream.

Under such circumstances, when the large-diameter stirring blade is inverted for a short period of time, the water in the washing tub alternately collides with each other, and the amount of water splashing out of the tub increases, and the floor surface is often wetted.

However, although there is a water draining guide plate or the like that projects inwardly around the opening of the washing tub, it is impossible to completely prevent the water from splashing out.

On the other hand, silent design is being promoted while the soft orientation of washing machines is advancing, but it is necessary to reduce the stirring noise in the washing tub as well as the noise of the motor. If the laundry lid is installed during operation in association with the splashing of water, these problems will be solved for the time being.

However, in general, most of the laundry lids are placed, and it is inconvenient to remove and use the laundry lid every time clothes are put in or taken out.

Therefore, the laundry lid 5 may be rotatably fixed by a shaft holding device like the dehydration lid 8. However, when the shaft portion is formed in the panel box 9, a large pivot space for the hinge portion is required, In addition, in order to fix the washing lid 5 when opened, it must be urged and held by a spring or the like like the dehydration lid 8.

Further, even when the rotating shaft of the laundry lid 5 is provided near the panel box, a fixing structure for opening is required, and if the lid height is high, it becomes difficult to secure a rotating space.

The present invention solves such a problem, and an object thereof is to make it possible to rotate a laundry lid with a simple structure even with a lid having a high lid height without using a biasing means such as a spring. And

Means for Solving the Problems The present invention is directed to a laundry lid which is provided to cover a substantially rectangular opening of a washing tub, a rotating shaft portion formed near both sides of a rear portion of the washing lid, and an opening of the washing tub. A slide groove portion which is disposed at the rear of the portion and which guides the rotation shaft portion to be engaged forward when the lid is opened, and a press-fit engagement when the upper end of the rear portion of the laundry lid gets over when the laundry lid is opened The holding protrusion is provided.

With the above configuration, when the laundry lid is opened, the pivot shaft portion moves along the slide groove, so that there is no need for a pivot space in the panel box, and even a laundry lid having a high lid height can be easily used. Opening and closing operations can be performed. Further, by using the holding protrusion, the laundry lid can be reliably held in a substantially upright state without using a separate component such as a spring.

Example 1 FIG. 1 is a vertical sectional view of a lid opening / closing device for a washing machine according to an embodiment of the present invention, FIG. 2 is a transverse sectional view thereof, and FIG. 3 is an exploded perspective view of the lid opening / closing device.

The structure of the lid opening / closing device of the washing machine of this embodiment is shown in FIGS.
It will be described with reference to the drawings.

In the figure, 10 is an exterior body of a washing machine, inside of which a water tub 13 having a washing tub 11 and a dehydration tub 12 is mounted. A panel box 16 for accommodating a switch 14, a water supply port 15 and the like is arranged behind and above the water tank 13, and an operation plate 17 for accommodating a time switch and the like is attached to the front. 18
Is a water draining guide plate projecting inward from the side wall of the washing tub, which is engaged and held by an engaging rib 19 provided at the periphery of the opening of the washing tub 11, and is screwed and fixed by screws 20 and 21. . 22 is a dehydration tank 1
A dewatering cage 24 rotatably mounted in 2 and having an inner lid 23 rotatably supported above the opening of the dewatering hatch 24.
Is attached so that it can be fitted freely. 25 is a dehydration lid, a handle hole
It has an A26 and is pivotally held in the panel box 16 by a hinge shaft 28 via a hinge part 27 at the rear side, and is held and fixed when opened by being biased and held by a spring (not shown). It is a thing. Reference numeral 29 is a washing lid, which has a handle hole B30, and a pair of rotating shaft portions 31 projecting toward both sides below the rear wall via an arm portion 32. Reference numeral 33 denotes a bearing portion A of a draining guide plate 18 whose rear end is fixedly engaged and fixed to a front wall of the panel box 16, and an upper surface thereof is provided with an engagement portion 34 formed with a large slope toward the front. On the surface of the washing lid 29 facing the rotating shaft portion 31, there is provided a slide groove portion 35 having a substantially arc shape.
It engages and guides the rotating shaft portion 31 of 29.

On the other hand, on the rotating shaft portion 31 'side of the washing lid 29 facing the slide groove portion 35 of the draining guide plate 18, a bearing portion B33', an engaging portion 34 ', and a slide groove portion 35' are integrally formed from the dehydration hatch 24. Each of them has a substantially symmetrical shape. Reference numeral 37 is a cutout portion provided on the rear wall of the washing lid 29, and 38 is a lid receiving portion formed by projecting on a part of the front wall of the panel box 16, which is located below the cutout portion 37 and has a holding projection. The part 39 is formed so as to extend downward.

 The operation of the lid opening / closing device of this embodiment will be specifically described.

In the above structure, as shown in FIG.
From the open state, the rotary shaft 31 moves to the slide groove 35 of the bearing A33.
Is guided to engage and is moved and held to the open state shown in the imaginary line. Here, the slide groove 35 is formed in a substantially arc shape, but this is a rotary shaft 31 drawn when the rear wall section 36 of the washing lid 29 is engaged with the front wall of the panel box 16 and rotates.
It follows the trajectory of, and even if it is a straight groove part, its effect does not change significantly.

Further, in this embodiment, the front wall of the panel box 16 is formed with a large slope downward, and the rear wall of the washing lid 29 is formed with a large slope upward, so that the gap between the two is increased. Since it is almost uniform, the laundry lid 29 can be
Strictly speaking, even when the rear wall is brought into contact with the upper surface of the water tank 13, the opening angle of the laundry lid is 90 ° or more, but in the present embodiment, it becomes larger positively toward the front of the bearing section. By having the engaging portion 34 formed in a slope, the own weight of the laundry lid with respect to the rotation axis can be moved backward, and the stability when the laundry lid is opened can be improved. In this case, since the rotary shaft is located below the lower surface of the laundry lid via the arm portion, the stability when the laundry lid is opened is further improved.

Next, the slide groove is located on the rear side of both sides of the laundry lid. However, when integrally formed from the water tank 13, the groove structure is orthogonal to the vertical drawing direction, which complicates the mold structure at the time of molding. Therefore, the slide groove portion can be easily formed by disposing the drain groove guide plate and the dehydration hatch as separate components.

Although not particularly specified in this embodiment, the washing lid and the bearing portion can be attached / detached by deforming and curving the central portion of the rear wall of the washing lid, but a notch is formed in a part of the engaging portion on the upper surface of the bearing portion. Grooves may be provided for convenience of insertion.

Further, by providing the lid receiving portion 38 on the front wall of the panel box, it is possible to prevent the central portion of the rear wall from falling downward when the washing lid is closed, and by forming the holding projection 39,
When the laundry lid is rotated, the holding protrusion is deformed, or it is overcome by using the substantially curved portion of the central portion of the laundry lid, and the rear wall top
By positioning 36 at the lower part of the holding projection 39 so as to have a holding effect at the time of opening, it is possible to prevent the washing lid from falling down due to shaking of the main body due to vibration during spin-drying.

EFFECTS OF THE INVENTION As is apparent from the embodiments described above, according to the present invention, a slide groove portion which is disposed at the rear portion of the opening of the washing tub and which is engaged and guided forward by the rotating shaft portion when the lid is opened, and the opening portion. By providing a holding projection provided on the rear edge of the laundry lid, which is pressed and engaged by the upper end of the rear portion of the laundry lid when the laundry lid is opened, the lid can be held when the laundry lid is opened with a simple structure.
It can be reliably performed and can be constructed at low cost without requiring a separate component such as a spring. Further, since the rotating shaft is moved along the slide groove, it is not necessary to provide a rotating space for the laundry lid in the panel box.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a lid opening / closing device for a washing machine according to an embodiment of the present invention, FIG. 2 is a horizontal sectional view thereof, FIG. 3 is an exploded perspective view thereof, and FIG. 4 is a perspective view of a conventional washing machine. Is. 29 …… Washing lid, 31,31 ′ …… Rotating shaft, 35 …… Slide groove, 39 …… Holding protrusion.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kazumasa Tanino 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-53-111665 (JP, A)

Claims (1)

[Claims] 1. A washing lid which covers an approximately rectangular opening of a washing tub, a rotating shaft portion formed near both sides of a rear portion of the washing lid, and an opening lid which is arranged at the rear portion of the opening of the washing tub. At the same time, there are provided a slide groove portion in which the rotary shaft portion is engaged and guided forward, and a holding projection portion provided in the opening portion at a rear edge and engaged by press contact with the upper end of the rear portion of the laundry lid when the laundry lid is opened. A lid opening and closing device for washing machines.