JPS5927480B2 - washing machine adjustable legs - Google Patents

Description

[Detailed description of the invention] The present invention relates to improvements in adjusting legs for washing machines.

A conventional adjusting leg of a washing machine will be explained with reference to FIGS. 1 and 2.

In Figure 1, 1 is the main body of the washing machine, and 3
It is equipped with 1 fixed leg 2 and 1 adjustable leg 3, and this 1
By adjusting the height of each adjustable leg 3, the main body 1 is stably supported on the floor 4.

In FIG. 2, 5 is an outer box of the washing machine, 6 is a mounting plate, 7 is a cylindrical support plate fixed to the mounting plate 6, and 8 is a leg supported by the support plate 7 and the flange 94 of the bottom plate 6. At the pillar
It has a leg stand 10 at the lower end, a pin 11 for preventing slipping out at the upper end, and a tapered part 12 with a knurling in the middle.

Reference numeral 13 designates an adjustment child whose screw shaft 14 is screwed into a nut 15 fixed to the support plate 7, and whose tip is connected to the tapered portion 1.
It is in pressure contact with 2.

Reference numeral 16 denotes a spring interposed between the mounting plate 6 and the pedestal 10, which is biased to push out the pedestal 8.

This adjustment leg is fixed by loosening the heir 13 to adjust the exposed height of the pillar 8, and then tightening the heir 13.
5ζThere are drawbacks as described below.

1. Since the tip of the screw shaft 14 is pressed and fixed to the tapered portion 12, the heir 13 must be tightened with strong force, and if the tightening becomes loose, it will become unstable.

Since the two pillars 8 are provided with a tapered part and knurled therein, the unit cost of the parts of the pillars 8 becomes high.

3 When the knob 13 is loosened, the footrest 10 hits the floor, producing a metallic sound and causing discomfort.

The object of the present invention is to provide an adjustable leg for a washing machine that does not have the above-mentioned drawbacks.

The present invention provides a washing machine having three fixed legs and one adjustable leg at the four corners of the bottom, in which the zero adjustable leg plate is always urged to be pushed out by a spring, and the leg column attached to the leg plate is is held by a tightly wound coil spring, one end of the coil spring is fixed and the other end is a free end, and holding of the pillar by the tightly wound coil spring is controlled by manipulating the free end. This is an adjustable leg for a washing machine.

Examples thereof will be described below with reference to FIGS. 3 to 8.

In FIG. 4, reference numeral 21 denotes an outer box of the washing machine, which is provided with a recess 23 having a cut groove 22 near the bottom.

24 is a mounting plate fixed to the bottom of the outer box 21, and has a square hole 25, and the square hole 25 has a cut and raised piece 26 that stands upright.

Flat sides 27 are formed alternately.

In FIG. 5, reference numeral 28 denotes a support tube installed in the square hole 25.

The bearing 2 into which the pillar 35 (Fig. 6) is inserted is inserted into the center.
9, a claw piece 30 that engages with the cut and raised piece 26 is provided around the upper part, and a projecting piece 31 that supports the piece 27 from below is provided on the outside.

A pair of grooves 32 are provided on the inner surface of the support tube 28, into which a pair of ears 40 of a leg board 39 (FIG. 7) are fitted.

The groove 32 is tapered at an angle α in the axial direction, as shown in FIG. 5C.

33 is the extended free end 4 of the coil spring 43 (Fig. 8).
This is a through hole provided in the upper plate 34 to allow the material 5 to pass through.

As shown in FIG.
6, and a base plate 38 made of a non-metallic material with a large coefficient of friction, such as rubber, is attached to the leg base 37 at the lower end.

FIG. 7 shows a base plate 39 that is fitted into the support tube 28 so as to be movable up and down.

Reference numeral 40 denotes a pair of ears provided on the outer periphery thereof, which engage with the groove 32.

41 is a bearing that supports the pillar 35. 42 is leg stand 3
At the receiving part of γ, in order to prevent the pivot 35 from rotating,
7, a part of its circumference is made into a straight line.

In FIG. 8, reference numeral 43 denotes a coil spring that is tightly wound around the pillar 35 to hold it, and one end 44 of the coil spring has its tip connected to the support cylinder 35.
The other end is extended to become a free end 45, passes through the through hole 33 and the cut groove 22 of the outer box 21, and is exposed to the outside. It is located within the recess 23 of the box 21.

FIG. 3 shows the adjustable leg of the present invention in an assembled state.

When the support cylinder 28 is pushed in from the bottom of the square hole 25, the claw pieces 30 of the support cylinder 28 engage with the raised pieces 26, and the protruding pieces 31 support the side 27 from below, so the support cylinder 28 is not attached. It is fixed to the plate 24.

Next, the leg plate 39 is fitted into the leg column 35, the spring 47 and the washer 48 are inserted into the leg column 35, the coil spring 43 is tightly wound, and the support tube 28 is inserted from below.

Although the spring 47 is biased to push the leg board 39 downward, the leg board 39 does not descend because the coil spring 43 holds the leg post 35.

Now, when the eldest child 46 is moved horizontally along the kerf 22 as shown by the arrow in FIG.
Since the holding by tight wrapping on the leg board 3 is loosened,
9 is pushed downward by spring 4γ.

When the extruded height of the leg plate 39 reaches a predetermined height, if you release your hand from the eldest child 46, the spring 43 returns to its original state by the elastic force of the coil spring 43, holding the leg column 35 and lifting the leg. Board 3
Fix the position of 9.

The reason why the concave groove 32 with which the lug 40 of the leg plate 39 engages is tapered is to adjust the relationship between the holding force of the column 35 by the coil spring 43 and the pushing force of the leg plate 39 by the spring 47. By adjusting the value of the taper angle α, the pushing force of the leg board 39 by the spring 47 is controlled.

Since the adjustable leg of the present invention has the above-described structure and function, it has the following effects.

The first operation is extremely simple, because when the legitimate child 46 is moved in the horizontal direction, a predetermined height is automatically obtained by the weight of the washing machine, and when the legitimate child 46 is released, it is automatically fixed at that position. It is.

Since the bipod pillar 35 has a simple structure, it can be provided at low cost.

Concave groove 32 of support tube 28 that engages with ear piece 40 of tripod board 39
Since the angle α is tapered, the sliding resistance between the leg plate 39 and the support tube 28 can be adjusted by adjusting the angle α, and the relationship between the pushing force by the spring 47 and the holding force by the coil spring 43 can be adjusted. can be adjusted appropriately.

Since a base plate 38 made of a non-metallic material with a large coefficient of friction is attached to the lower surface of the four-legged base 3γ, slipping on the floor is prevented and unpleasant noises such as metallic sounds are not generated during adjustment.

Since the support tube 28 can be attached by simply pushing it into the square hole 25 from below, assembly is extremely simple.

It can be widely used not only for washing machines but also as adjustment legs for installing various devices of the same type.

[Brief explanation of drawings]

Figure 1: Diagram showing the position of the adjustable legs in a washing machine, Figure 2: Longitudinal sectional view of a conventional adjustable leg, Figure 3: Longitudinal sectional view of the embodiment of the present invention, Figure 4: Installation of the present invention. Plate 24 and its square hole 25
FIG. 5: A diagram showing the support tube 28 of the present invention,
A is a plan view, the mouth is a side view, C is a diagram showing the concave groove 32, 6th
Figure: This is a diagram showing the leg column 35 of the present invention, A is a plan view, the mouth is a side view, Figure 7: A diagram showing the leg plate 39 of the present invention, A is a top view, the mouth is a side view, and C is a diagram. Bottom view, Figure 8: Pillar 3 of the present invention
A diagram showing the relationship between 5 and the coil spring 43, 21...outer box, 22...cut groove, 23...recess, 2
4...Mounting plate, 25...square hole, 26...cut and raised piece,
27...Side, 28...Support tube, 29...Bearing, 3
0...Claw piece, 31...Protrusion piece, 32...Concave groove, 33
...Through hole, 34...Top plate, 35...Pillar, 36.
・Zen, 37... pedestal, 38... pedestal, 39...
Leg board, 40... Ear piece, 41... Bearing, 42... Receiving portion, 43... Coil spring, 44... One end of coil spring, 45... Free end, 46... Heirloom, 47...Spring, 48...Washer.

Claims (1)

[Scope of Claims] 1. In a washing machine having three fixed legs and one adjustable leg at the four corners of the bottom, the zero adjustable leg board is always urged by a spring, and the leg board Is the pedestal on which the pedestal is attached tightly wound with a coil spring? One end of the coil spring is fixed and the other end is a free end, and holding of the pillar by tightly winding the coil spring is controlled by manipulating the free end. Adjustable legs. 2 A square hole having upright cut-and-raised pieces and flat sides alternately provided in the mounting plate, and a support cylinder having claw pieces that engage with the cut-and-raised pieces and protruding pieces that support the sides from below. 2. The adjustable leg for a washing machine according to claim 1, wherein the leg plate is fitted into the square hole and is attached to the leg column and housed inside the support cylinder so as to be slidable in the vertical direction. 3. A patent characterized in that the inner surface of the support tube has a groove in which a plurality of ears provided on the outside of the leg board engage, and the groove has a taper of α in the axial direction. Scope of claims 2
Washing machine adjustable legs. 4. The adjustment bird for a washing machine according to claim 2, wherein a base plate made of a non-metallic material having a large coefficient of friction is attached to the tip of the pillar.