JPH0824786B2 - Water level adjuster for washing machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a water level adjusting device for a washing machine.

2. Description of the Related Art Conventionally, FIG. 4 and FIG. 5 show the configuration of an overflow water level adjusting device in a washing tub of a washing machine.

In the figure, 1 is a main body, 2 is a washing tub, and 3 is a panel box for accommodating a power switch 4 and the like. 5 is a recess provided in a part of the side wall of the washing tub 2, an overflow pipe 6 is arranged at the bottom, and an overflow filter 8 having a plurality of water holes 7 is provided on the side wall of the recess 5 of the washing tub 2. It is fixed so that it can be fitted freely. 9 has a bellows-shaped portion 10, an upper end is an overflow port 11, and a lower end is a telescopic overflow hose attached to an overflow pipe 6,
It is held by a joint 12 which is vertically guided by a guide groove (not shown) formed in a part of the side wall of the recess 5. Further, a coil spring 14 is provided between the lower surface of the water receiving box 13 arranged below the panel box 3 and the upper end of the joint 12.
Is attached, and the overflow hose 9 is always urged downward. Reference numeral 15 is a slide lever slidably engaged with a part of the panel box 3, to which a knob 16 is fixed and a hook portion 17 is provided. Reference numeral 18 denotes a string-shaped cock rod, one end of which is inserted through the hook portion 17 of the slide lever and the other end of which is inserted into the recess 5 through the rod guide portion 14 of the water receiving box 13 and fixed to a part of the joint 12. There is. The slide groove 19 of the slide lever 15 is formed with a concave-convex latch portion 20 and engages with and guides a protrusion (not shown) of the slide lever 15.

Problems to be Solved by the Invention Such a conventional configuration has the following problems.

(1) Since the overflow hose 10 is always urged downward by the coil spring 14, the overflow port 11 is moved upward. That is, when the overflow water level is raised, the coil spring is compressed, and the operating force in the sliding direction of the knob 16 increases, causing a problem in operability.

The problem is that, especially when a small amount of laundry is carried out in a large capacity washing machine, the maximum strokes of the uppermost and lowermost portions of the overflow water level become very large, and the tendency of increasing the operating force increases. However, if the maximum stroke is reduced, the water saving effect cannot be expected when washing at a small water level.

(2) Since the ratio of the operation stroke to the vertical stroke of the overflow water level is 1: 1, if you try to set a large maximum stroke, the space required for the water level adjustment structure in the panel box will be large, and a large design space will be required. Was needed.

(3) If the stroke of the slide groove 19 of the operating portion is increased, the slide groove formed especially in the structure of the latch portion 20
It is difficult to secure uniform dimensions for the slide groove 19, and the holding force of the slide lever by the latch part 20 is weaker at the center of the slide groove 19 than at the left and right ends, and the slide lever is pulled back even if the water level is adjusted. It was

The present invention solves the above-mentioned problems, and an object of the present invention is to enable compactness even for a large overflow water level stroke and to adjust the water level without impairing the operating force.

Means for Solving the Problems In order to achieve the above object, the present invention provides a retractable overflow hose arranged in a recess formed in a part of a side wall of a washing tub, and overflow water communicating with a lower end of the overflow hose. A pipe, a joint that holds the vicinity of the overflow port at the upper end of the overflow hose, and slides and guides in the vertical direction, a rod whose one end is rotatably connected to this joint, and a first hinge portion on the other end side of the rod. A lever with one end connected via a lever and a shaft support provided in the middle of the lever, and one end connected to the other end of the lever via a second hinge part, and the other end connected to an operating knob A plate, and the shaft support is located at a second position from the center of the lever.
The lever side plate is located on the hinge side and the lever side plate is moved up and down by sliding the operating knob.

Action With the above configuration, even if the maximum stroke of the overflow water level increases, the lever is operated, so, for example,
If the ratio of the length from the shaft support of the lever to both ends is 1: 2, the operation stroke is 5 even with a maximum stroke of 100 mm.
It can be 0 mm.

Further, since the lever portion and the joint portion are connected via the lever plate portion, the overflow hose can be moved up and down without using biasing means such as a coil spring.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, FIG. 2 and FIG. 3, 21 is a main body and 22 is a water tank. A panel box 23 is arranged at the rear of the water tank 2, and a substantially L-shaped mounting plate 25 is screwed and fixed at one end to a back surface of a knob storage portion 24 provided in a part of the panel box 23 by a screw 26. The other end is engaged and held by a stopper portion 27 projecting from the back surface of the panel box 23. 28 is a slide plate and a mounting plate 25
It has a claw part A29 and a claw part B30 for slidably fitting with. Further, a knob holding portion 32 is formed so as to project from a slide hole 31 provided in a part of the knob storing portion 24, and an operation knob 33 is fitted in the knob holding portion 32 so as to be freely fitted, and the panel box 23 A water receiver 34 and a water receiver cover 35 are fixed to the lower part, and a part of the water receiver 34 is formed by a surrounding rib 36,
Slide holding plate with protrusion C37 and protrusion D38
Guide 39 slidably.

Reference numeral 40 denotes a washing tub provided in the water tub 22, in which a recess 41 is provided in a part of the side wall, an overflow pipe 42 is projectingly provided in a part of the bottom of the recess 41, and the lower part is a drainage communicating with the outside of the machine. It is connected to a hose (not shown). A bottom end is fitted and fixed to the overflow pipe 42, and an overflow hose 45 having an expandable and contractible bellows part 43 in the middle and an overflow port 44 at the upper end is provided, and provided on a part of the side wall of the recess 41. Below the joint 48 having the guide plates 47 and 47 'for slidingly guiding the guide groove 46 in the vertical direction, a holding recess 50 provided above the overflow hose 45 is inscribed and held as a substantially cylindrical portion 49. 51, 51 'are formed so as to project on the upper portion of the slide holding plate 39, and the upper end of the inclined portion
The guide ribs 2 and 52 'serve as guides when the panel box 23 is assembled from above. The guide ribs are arranged substantially symmetrically, and the claw portion B30 of the slide plate 28 is provided between the guide ribs 51 and 51'.
By guiding the both sides of the enclosure, and sliding the operation knob 33, the slide holding portion 39 is interlocked and guided. Reference numeral 53 is a support plate portion projectingly formed above the recess 41 from a part of the water receiver 34, and has a shaft hole 56 for rotatably bearing the shaft portion 55 of the lever 54. Reference numeral 57 is a slit groove provided in a part of the shaft hole 56, which is inserted through a slip-out preventing projection 58 provided at the tip of the shaft portion 55 and is located outside the rotation trajectory of the lever 54, and has a slip-out preventing effect of the lever 54. Play. Reference numeral 59 is a rod, one end of which is formed through the lever 54 and a first hinge B60 having a substantially thin shape, and the other end of which is provided with a driven shaft 61 which is substantially orthogonal to the rod 59 and which is provided at the upper end of the joint 48. The claw holding portion 62 is rotatably fitted and supported on the shaft. The claw holding portion 62 is formed slightly offset from the center of the overflow port 44 so that the drain pipe 63 of the water receiver 34 does not interfere with the dropping into the overflow port 44. Reference numeral 64 is an engaging rib formed to project near the first hinge 60 of the lever 54. When the lever 54 and the rod A59 are bent and displaced and are displaced in a substantially straight line, the engaging rib 64 is engaged with the rod A59 and is displaced in the opposite direction. To prevent The engagement rib 64 has the same effect when it is provided on the rod 59 side. Reference numeral 65 denotes a guide plate which is provided in parallel on a part of the side wall of the water receiver 34 and is formed in a substantially arc shape. The position of the water pan 34 is regulated. Reference numeral 67 is a thin plate-like lever plate portion that extends from the slide holding plate 39 and is connected to the lever 54 via a hinge portion A68, and slides internally to the pin-shaped portions 66 that are arranged in parallel. Reference numeral 69 denotes a guide pin portion provided below the guide plate 47 'of the joint A48, which is a pin for correcting the twist of the joint A48.

Reference numeral 70 denotes a guide convex portion provided on the lower surface of the claw portion A29 of the slide plate 28. The guide concave portion 71 is slidably fitted in the guide concave portion 71 of the mounting plate A25.
It is set with 33 operation stroke dimensions.

The operation of the above configuration will be described. Operation knob
When 33 is slid, the lever plate part
67 moves. That is, the end of the lever plate 67 and the second hinge 68 move up and down. Then, the first hinge 60 side of the lever 54 that rotates around the shaft 55 as a fulcrum also moves up and down by the operation of the lever plate 67, and the rod 59 connected through the first hinge 60 also moves up and down. Therefore, the joint 48 connected to the rod 59 can be moved up and down, and the overflow port 44 also moves up and down. At this time, since the position of the shaft portion 55 of the lever 54 is set to be longer on the first hinge 60 side than on the second hinge 68 side, even if the vertical stroke on the second hinge 68 side is small, The vertical stroke on the first hinge 60 side is increased.

EFFECTS OF THE INVENTION As is clear from the above embodiments, according to the present invention, the overflow port can be moved up and down by the turning operation of the lever without using the biasing means such as the spring, and the first and second hinges can be provided. Stroke loss can be reduced by interlocking via the lever, and the operation stroke can be made smaller than the operation stroke of the overflow port by lever conversion, and the space of the slide part in the panel box can be made compact.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a water level adjusting device for a washing machine showing an embodiment of the present invention, FIG. 2 is a horizontal cross-sectional view of the same main part, FIG. 3 is a perspective cutaway view of the same part, and FIG. FIG. 5 is a cross-sectional view of the water level adjusting device of the washing machine in FIG. 5, and FIG. 5 is a perspective view of a main part of the washing machine. 33 …… operation knob, 40 …… washing tub, 41 …… recess, 45 ……
Overflow hose, 42 …… Overflow pipe, 43 …… Bellows, 44 ……
Overflow port, 45 …… Overflow hose, 48 …… Joint, 54 ……
Lever, 55 ... Shaft, 59 ... Rod, 60 ... First hinge, 67 ... Lever plate, 68 ... Second hinge.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 61-56697 (JP, A) Actual development 62-93991 (JP, U) Actual public 49-25171 (JP, Y1)

Claims (1)

[Claims] 1. A stretchable overflow hose arranged in a recess formed in a part of a side wall of a washing tub, an overflow pipe communicating with a lower end of the overflow hose, and a vicinity of an overflow port at an upper end of the overflow hose. , A joint that slides and guides in the vertical direction, a rod whose one end is rotatably connected to this joint, and one end connected to the other end side of this rod via a first hinge part, and a shaft support part is provided in the middle And a bow-shaped lever plate whose one end is connected to the other end side of the lever via a second hinge part and the other end is connected to an operating knob. A water level adjusting device for a washing machine, which is located on the hinge side and has a structure in which the lever side plate is moved up and down by a lever plate which is moved by sliding an operation knob.