JPH0556090U - Drainage switching device for washing machine - Google Patents

Abstract

(57) [Summary] [Purpose] When drainage switching is performed by operating the cam lever with the slide knob, the force applied to the knob can be made constant from the beginning to the end of the slide operation, allowing smooth movement of the knob. [Structure] A linearly movable switching knob 10 is engaged with a slide lever 19, and one long arm 17d of a V-shaped cam lever 17 is slidably engaged in a long hole 19d formed in the slide lever 19. The cam lever 1
A belt 20 having a drain valve fixed to the tip thereof was attached to the other short arm 17b of No. 7.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a drainage switching device for a washing machine.

[0002]

[Prior Art]

 2. Description of the Related Art In a two-tub type washing machine, as a drainage switching device for accumulating or draining water in the washing tub, there is a conventional one shown in FIGS. 17 and 18, for example. This is composed of a switching knob 33 serving as an operating portion and an L-shaped cam lever 34. The switching knob 33 integrally projects a knob 33b and an arm 33c vertically from the center of the slide plate 33a. It was

In the cam lever 34, one arm is used as a sliding portion 35, and a portion near the tip of the sliding portion 35 is formed as a flat horizontal locking portion 35a, and the belt 32 is attached to the tip of the other arm. Is provided with a projection 36, and a rotary shaft 37 is provided at the base of the cam lever 34.

In the figure, reference numeral 38 indicates a support portion of the cam lever 34. The support portion 38 is composed of a support frame 38a having an inverted U-shape and a support base 38b having a semicircular cut-out upper portion, and is mounted on a panel base 39. It is installed.

In this way, the operation panel 30 is provided with the elongated hole 30a, and the knob portion 33b of the switching knob 33 is protruded here, and the slide plate 33a is provided on the lower surface of the elongated hole 30a along the longitudinal direction of the elongated hole 30a. Install it so that it can slide in a straight line. Then, the rotation shaft 37 of the cam lever 34 is inserted into the support frame 38a and the support base 38b of the support portion 38 so that the cam lever 34 is rotatably mounted on the panel base 39, and the sliding portion 35 thereof is the switching knob. The arm 33 is brought into contact with the arm 33c.

[0006] Next, the usage and operation will be described. In Fig. 18, the chain line shows a state in which the drain valve 31 is closed. In this state, the knob 33b is at the rightmost end of the elongated hole 30a in the figure, and the cam lever 34 slides. In a state where the moving portion 35 is almost vertical, the sliding portion 35 below the horizontal locking portion 35a contacts the arm 33c, and the other end of the cam lever 34 to which the belt 32 is attached is located obliquely lower right.

In order to drain water from this state, the knob 33b is pinched with a fingertip and slid to the left along the elongated hole 30a in the figure, the slide plate 33a extends along the lower surface of the elongated hole 30a. It slides in parallel with this, and the arm 33c integral therewith also moves to the left. At this time, the arm 33c presses the sliding portion 35 of the cam lever 34, so that the sliding portion 35 rotates leftward about the rotation shaft 37, and as a result, the other end of the cam lever 34 rotates upward. As a result, the other end of the cam lever 34 rotates upward, and the belt 32 attached here is pulled up.

Then, when the knob portion 33b is further slid to the leftmost end of the elongated hole 30a (solid line position in FIG. 18), the arm 33c engages with the horizontal locking portion 35a, and in this state, the lower end surface of the arm 33c. An upward pressing force due to the rotational torque of the cam lever 34 is applied to the arm 33c, and the arm 33c is locked in this position, preventing the switching knob 33 from sliding in the opposite direction, that is, to the right.

At this time, since the horizontal engaging portion 35a is formed in a flat shape, the cam lever 34 and the switching knob 33 come into surface contact with each other, and the rotational torque from the cam lever 34 side to the switching knob 33 side is used. The transmission of the pressing force is sufficiently and surely performed. Then, the cam lever 34 is further rotated by the switching knob 33, pulls the belt 32, and opens the drain valve 31.

[0010]

[Problems to be solved by the device]

 In the conventional drainage switching device, the switching knob 33 for operation is in direct contact with the cam lever 34, and when the switching operation is started, the tip of the arm 33c pushes this sideways in a state of line contact with the side surface of the sliding portion 35. The load applied to the knob 33b is small, and the knob 33b can be slid lightly. However, when the arm 33c is in the middle of the switching operation and comes into surface contact with the horizontal engaging portion 35a, the horizontal engaging portion 35a. Since the slide is performed while applying a pressing force from above, the operation of the knob 33b becomes heavy. Then, when passing through this horizontal locking portion 35a, the operation of the knob portion 33b becomes light again.

Further, in the structure in which the cam lever 34 is directly rotated by the switching knob 33, the contact point between the arm 33c of the switching knob 33 and the cam lever 34 moves on the cam lever 34 in accordance with the rotation of the cam lever 34. Since the cam lever 34 becomes farther or closer to the center of rotation, the load applied to the knob 33b changes from light → heavy → light, resulting in poor operability.

The object of the present invention is to eliminate the inconvenience of the conventional example, and when the knob is slid to rotate the cam lever, the load applied to the sliding knob can be kept constant, and the washing can be smoothly operated with a constant force. To provide a drainage switching device for a machine.

[0013]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention engages a linearly movable switching knob with a slide lever, and slidably engages one arm of a V-shaped cam lever in an elongated hole formed in the slide lever. In summary, a belt having a drain valve fixed to the other end is attached to the other arm of the cam lever.

[0014]

[Action]

 According to the present invention, when the switching knob slides, for example, to the left, the slide lever to which the knob is attached also slides to the left, and one of the cam levers engaged in the long hole formed in the slide lever. The tip of the arm also moves forward and backward while rotating in the slot, and as a result, the other arm also moves backward from the front position, pulling the belt attached to the other arm and opening the drain valve. ..

In this case, since the tip of one arm of the cam lever is simply inside the slide lever long hole, the force applied to the cam lever by the sliding of the knob is always at the tip of the one arm via the long hole of the slide lever. Therefore, the point of action on the cam lever is simply the same point, and the force for operating the knob is simply constant.

[0016]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an exploded perspective view showing an embodiment of a drainage switching device for a washing machine according to the present invention, and FIG. 2 is a vertical side view of the same. First, referring to FIG. 16, the overall structure of a washing machine in which the drainage switching device according to the present invention is implemented. Will be explained.

The figure shows a two-tub type washing machine, in which an operation panel 4 is provided on the rear upper surface of an outer box 1 in which a washing tub 2 and a dehydration tub 3 are provided inside, and an auxiliary panel is provided on the operation panel 4. The knobs 7 and 8 of the timer for setting the washing time and the dehydration time are attached via 5, and the front side of the operation panel 4 protrudes inside the top opening of the washing tub 2 at a position lowered by one step and is discharged to this protrusion. A knob 10 for switching drainage for opening and closing the water valve and a knob 9 for switching water supply for switching water supply between the washing tub 2 side and the dehydration tub 3 side are provided.

In the figure, 11 is a washing lid attached to the top opening of the washing tub 2, 12 is a dehydration lid, 13 is a water supply case, and 14 is a pulsator.

As shown in FIG. 2, the operation panel 4 is combined with a lower panel base 6 to form a panel box, and a drainage switching device is arranged in the panel box 6. The device is composed of a switching knob 10 for mounting in a long hole 4a formed in the operation panel 4, a lever holder 18, a slide lever 19 and a V-shaped cam lever 17, and a panel base 6 for mounting the cam lever 17 The projection 6a, the guide groove 6l for mounting the knob 10 and the lever holder 18, and the elongated hole 6g in the guide groove 6l are formed. Reference numeral 6b in the drawing denotes a water supply support base forming a part of the water supply switching device.

The knob 10 is formed of a knob portion 10c and a locking piece 10a protruding downward, and a locking recess 10b is formed outside the lower portion of the locking piece 10a.

The lever holder 18 projects a holder claw 18b downward from the edge of the elongated hole 18d formed in the slide plate 18a, and forms a locking protrusion 18c that engages with the locking recess 10b inside the holder claw 18b. To do.

As shown in FIGS. 8 to 12, the slide lever 19 is formed in an L shape as a whole, and one arm 19a is formed with a locking hole 19b and the other arm 19c is formed with a long hole 19d.

As shown in FIGS. 3 to 7, the cam lever 17 has a V-shaped base with an attachment hole 17a for attaching to the panel base 6, and one short arm 17b at the upper stage for attaching the belt 20 to the upper surface. The protrusion 17c is provided in a protruding manner, and the other long arm 17d located at the lower stage is provided with a protrusion 17e which engages with the elongated hole 19d from the lower surface of the tip thereof.

In order to install the drainage switching device composed of the above members in the panel base, the slide plate 18a of the lever holder 18 is mounted in the guide groove 6l formed in the panel base 6, and the holder claw 18b is moved downward from the long hole 6g. Project to. Next, the locking piece 10a of the knob 10 is projected downward from the long hole 18d of the lever holder 18 and the long hole 6g of the panel base 6 to couple the knob 10 to the lever holder 18.

On the other hand, the mounting hole 17 a of the cam lever 17 is aligned with the projection 6 a protruding from the panel base 6, and the cam lever 17 is rotatably mounted on the panel base 6 by the screw 15. Further, the slide lever 19 is placed on the panel base 6, the arm 19a is positioned below the lever holder 18, and the locking hole 19b formed in the arm 19a is engaged with the holder claw 18b of the lever holder 18. , The slide lever 19 is connected to the lever holder 18. Further, a protrusion 17e protruding from the lower surface of the long arm 17d of the cam lever 17 is inserted from above from the long hole 19d formed in the other arm 19c.

As described above, the knob 10 is connected to the cam lever 17 via the lever holder 18 and the slide lever 19, and the drain valve is fixed to the tip of the belt 20 though not shown.

Next, usage and operation will be described. FIG. 13 shows a state in which the drain valve is closed. The lever holder 18 and the knob 10 are located at the end moved to the right along the guide groove 6l, and the slide lever 19 is also located at the right end accordingly. .. Further, in this state, the long arm 17b of the cam lever 17 is directed rightward and the protrusion 17e at the tip is located rearward in the long hole 19d of the arm 19c.

To open the drain valve in this state to perform drainage, the knob 10 of the knob 10 is pinched with a fingertip and slid to the left along the long hole 4a. As a result, the lever holder 18 to which the knob 10 is attached slides leftward in the guide groove 6l, and the slide lever 19 connected to the lever holder 18 slides leftward on the panel base 6.

At this time, as shown in FIG. 14, the arm 19c of the slide lever 19 linearly slides to the left, so that the protrusion 17e fitted in the slot 19d is pushed by the right edge of the slot 19d. Then, it moves forward in the slot 19d while drawing a circular fox-shaped trajectory around the location of the mounting hole 17a. Then, as shown in FIG. 14, even after moving to the front position in the long hole 19d, if the knob 10 is further moved to the left, the protrusion 17e is pushed by the right side edge in the long hole 19d, and this time. Move backwards (see Figure 15).

In this way, when the protrusion 17e moves rearward in the elongated hole 19d and the arm 19c pivots leftward with this, the other arm 19a also pivots in the same direction and faces leftward. As a result, the drain valve is pulled up via the belt 20 to drain the water. To do.

At the time of the switching operation by sliding the knob 10, the cam lever 17 is always in contact with the slide lever 19 via the elongated hole 19d only at the location of the protrusion 17e at the tip of the long arm 17d. The point where the turning power is applied by the slide becomes constant, and the force applied to the knob 10 becomes constant from the start to the end of the sliding operation of the knob 10.

In order to close the drain valve from the open position of the drain valve in FIG. 15, the knob 10 may be slid rightward along the long hole 4a by the operation opposite to the above. In this case, the protrusion 17e of the cam lever 17 moves up and down along the inside of the elongated hole 19d while being pushed by the left edge thereof.

[0033]

[Effect of the device]

 As described above, in the drainage switching device for the washing machine of the present invention, when the knob for drainage switching is slid to rotate the cam lever, the force applied to the knob is constant from the beginning to the end of the sliding operation. Since it can be done, the picks can be moved smoothly and the operability is good.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a drainage switching device for a washing machine according to the present invention.

FIG. 2 is a vertical sectional side view of a panel box portion provided with the drainage switching device of the present invention.

FIG. 3 is a plan view of a cam lever.

FIG. 4 is a front view of a cam lever.

FIG. 5 is a right side view of the cam lever.

6 is an end view of the cam lever taken along the line AA in FIG.

FIG. 7 is an end view of the cam lever taken along the line BB in FIG.

FIG. 8 is a plan view of a slide lever.

FIG. 9 is a front view of a slide lever.

10 is an end view of the slide lever taken along the line AA in FIG.

FIG. 11 is a right side view of the slide lever.

12 is an end view of the slide lever taken along the line BB in FIG.

FIG. 13 is a partially cutaway plan view showing a state where the knob is moved to the right.

FIG. 14 is a partially cutaway plan view during movement of the knob.

FIG. 15 is a partially cutaway plan view showing a state where the knob is moved to the left.

FIG. 16 is an overall perspective view of a washing machine in which the drainage switching device of the present invention is implemented.

FIG. 17 is an exploded perspective view showing a conventional example.

FIG. 18 is a front view showing a conventional example.

[Explanation of symbols]

 1 ... Outer box 2 ... Washing tub 3 ... Dehydration tub 4 ... Operation panel 4a ... Long hole 5 ... Auxiliary panel 6 ... Panel base 6a ... Protrusion 6b ... Water supply support 6g ... Long hole 6l ... Guide groove 7 ... Timer knob 8 ... Timer 9 ... Water supply switching knob 10 ... Drainage switching knob 10a ... Locking piece 10b ... Locking recess 10c ... Picking portion 11 ... Washing lid 12 ... Dehydration lid 13 ... Water supply case 14 ... Pulsator 15 ... Screw 17 ... Cam lever 17a ... Mounting hole 17b ... Short arm 17c ... Protrusion 17d ... Long arm 17e ... Protrusion 18 ... Lever holder 18a ... Slide plate 18b ... Holder claw 18c ... Locking protrusion 18d ... Long hole 19 ... Slide lever 19a ... Arm 19b ... Locking hole 19c ... Arm 19d ... Long hole 20 ... Belt 30 ... Top panel 30a ... Long hole 31 ... Drain valve 32 ... Belt 33 ... Switching See 33a ... slide plate 33b ... knob 33c ... arm 34 ... cam lever 35 ... sliding part 35a ... horizontal locking portion 36 ... projection 37 ... rotating shaft 38 ... bearing 38a ... support portion 38b ... bearing blocks 39 ... panel base

Continuation of the front page (72) Takeshi Sugino, 1-1, Yamate, Funate, Chiba Prefecture, Nihon Kenketsu Co., Ltd., Funabashi Manufacturing Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A linearly movable switching knob is engaged with a slide lever, and one arm of a V-shaped cam lever is slidably engaged with an elongated hole formed in the slide lever. A drain switching device for a washing machine, characterized in that a belt having a drain valve fixed to a tip thereof is attached to the other arm.