JPH10165690A - Rotary shaft support device for full automatic washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To absorb and eliminate vibration and noise in rotating a rotary shaft by a housing and improve rotation efficiency of a motor and washing efficiency by providing the housing which supportingly connects the rotary shaft coupled with a washing inner tub so as to reduce the vibration and noise caused by motor drive. SOLUTION: An interval between a support, projection 107 of a housing 101 and a support projection 143 of a washing outer tub 131 is connected to an 0-ring 133 to hold airtightness so that a leaking phenomenon of wash water of the washing outer tub 131 is prevented. An interval between a support part 105 and rotary shaft 132 is connected by a seal 134 so that the leakage phenomenon from the support part 105 to the inside is prevented. Especially, the seal 134 obtains a sure sealing effect, because an air hole 135 is formed therein to hold an air gap. A housing 101 is fixed in a wide contact area of a base plate 102, which is fixed to the bottom face of the washing outer tub 131 coupled with the support part, 105 by a bolt 136, so that the vibration, noise, etc., caused by dispersion effect can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully automatic washing machine, and more particularly to a washing tub and a motor which are directly connected to each other by a rotating shaft to rotate the washing tub forward / reverse by a rotational force corresponding to the driving of the motor. In a washing machine, the present invention relates to a rotating shaft support device for preventing vibration and noise generated by a rotating shaft when transmitting a rotating force corresponding to the driving of the motor.

[0002]

2. Description of the Related Art Generally, a conventional washing machine directly connects a washing tub to a motor and performs washing and dehydration by forward / reverse rotation of the washing tub. On the other hand, the rotating shaft supporting means of a conventional washing machine is generally configured such that a cylindrical housing is fixed to the center of a washing outer tub, a bearing is inserted into the cylindrical housing, and then the rotating shaft is connected. . In the conventional washing machine having such a configuration, when the motor rotates, the rotation force from the motor is transmitted to the inner tub through the rotation shaft. However, when the rotation shaft rotates, much vibration and noise are generated. Therefore, there have been many problems such as the rotation efficiency of the motor being reduced due to the vibration of the rotating shaft, and the washing efficiency being slightly reduced.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to generate vibrations generated when a motor is driven to rotate a rotating shaft. Another object of the present invention is to improve the rotation efficiency and washing efficiency of the motor by absorbing and extinguishing noise by a housing coupled with a stable structure.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a washing tub attached to the bottom of a washing outer tub so as to reduce vibration and noise caused by driving a motor. An apparatus for supporting a rotating shaft of a fully automatic washing machine includes a housing coupled to support the connected rotating shaft.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction and operation of the present invention will be described in detail with reference to FIGS.

The present invention is mounted on the bottom of the outer washing tub 131 and is coupled to support the rotating shaft 132 connected to the inner washing tub 138 while reducing vibration and noise caused by driving the motor 110. Housing 10
1 is provided.

At this time, the housing 101 is formed in a radial shape, and the outer tub 13 is
Base plate 102 widely fixed to the bottom surface of base plate 102
A circular rib 103 formed inside the base plate 102 to prevent water from permeating;
A reinforcing rib 104 formed radially on the base plate 102 to reinforce strength;
A supporting portion 105 that connects the rotating shaft 132 to the inside thereof and rotatably supports the rotating shaft with a number of bearings 142; and a motor formed on the bottom portion of the supporting portion 105. And a tightening hole 106 for fixing the stator 111 of the base 110 with bolts 136.
A sealing means provided on an upper portion of the support portion 105 so as to prevent water from penetrating between the support portion 105 in which the support portion 105 is formed and the rotating shaft 132; Airtight maintenance means is provided between the support projection 107 of the support part 105 and the support projection 143 of the outer tub 131 to maintain airtightness.

The sealing means includes a seal having an air hole 135 formed so as to maintain an air gap.
l) 134 is provided. Further, an O-ring 133 is provided as the airtightness maintaining means. The fixing means of the stator is formed on the central plate 113 of the stator 111 and is supported by
A fastening hole 114 for fastening to the fastening hole 106 of
The motor 11 is mounted on a circumferential rib 116 erected on the upper peripheral edge of the central plate 113 in which the coupling hole 114 is formed.
In order to prevent slippage caused by the repulsive force of the stator 112 coupled to the stator 111 of the
And an insertion groove 115 for coupling one reinforcing rib 104.

In the drawings, reference numeral 139 denotes a washing wing for washing, 140 denotes a washing machine, and 141 denotes a washing machine.
Is a bracket that supports the outer tub and the housing and is used for transportation.

Hereinafter, the operation of the present invention thus configured will be described.

After the laundry is put into the inner tub 138 of the washing machine 140 and the start button is pressed, the rotating cores facing each other while a magnetic field is generated from the stator 112 coupled to the stator 111 of the motor 110. By rotating the rotor 112, the rotor 121 rotates forward / reverse. The rotation of the rotor 121 causes the rotation shaft 132 that fixes the connecting pipe 123 of the rotor 121 with the nut 137 to rotate. The rotation of the rotation shaft 132 causes the inner washing tub 138 and the washing wing 139 inside the outer washing tub 131 attached to the upper end of the rotation shaft 132 to rotate forward / backward.
The laundry is automatically washed while rotating in the reverse direction.

At this time, the support portion 105 of the housing 101
Support protrusion 107 formed on the upper outer peripheral edge of the outer tub 1
An O-ring 133 is connected to the support protrusion 143 formed on the base 31 to maintain airtightness.
The phenomenon in which the wash water of No. 31 leaks is prevented. Further, since the seal 134 is connected between the support portion 105 and the rotating shaft 132, the phenomenon of water leakage into the support portion 105 is prevented. In particular, since the air holes 135 are formed in the seal 134 so as to maintain the air gap, a reliable sealing effect can be obtained.

The housing 101 is fixed in a more stable state due to the large contact area of the base plate 102 fixed by bolts 136 to the bottom surface of the outer washing tub 131 connected to the support portion 105. Vibration and noise due to the dispersion effect can be reduced.

According to the present invention, the strength of the support portion 105 is reinforced by the reinforcing ribs 104 of the support portion 105, and the reinforcing ribs 104 are formed on the circumferential surface of the central plate 113 of the stator 111. The stator 1 of the stator 111 is inserted into the insertion groove 115 of the rib 116.
Slip, vibration, and the like, which are likely to occur due to the strong repulsion by the lever 12, can be blocked.

Since the circular rib 103 formed between the support portion 105 and the base plate 102 can block water that may infiltrate from the outside, the stator 112 Safety from electrical accidents is ensured even when the insulation of the live part is broken down.

[0016]

As described above, according to the present invention, the stator and the rotor of the motor can be smoothly rotated by the reliable supporting effect of the housing, so that the rotation efficiency can be improved.

[0017] Since the vibration and the noise can be almost cut off and absorbed by the rotating shaft for rotating the washing blade and the inner tub, the washing efficiency can be improved.

In particular, a more improved and advanced washing machine can be obtained by a vibration and noise absorbing structure and a sealing structure by various parts of the housing.

[Brief description of the drawings]

FIG. 1 is a sectional view of a washing machine of the present invention.

FIG. 2 is an enlarged sectional view showing a main part of the washing machine of the present invention.

FIG. 3 is a perspective view of a housing of the present invention.

FIG. 4 is a bottom perspective view of the housing of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 101 Housing 102 Base plate 103 Circular rib 104 Reinforcement rib 105 Support part 106 Tightening hole 111 Stator 112 Stator 113 Central plate 114 Connecting hole 115 Insertion groove 121 Rotor 122 Rotating iron core 123 Connecting pipe 131 Washing tub 132 Rotating shaft 133 O- Ring 134 Seal 135 Air hole

Claims (5)

[Claims] 1. A housing mounted on a bottom surface of the outer tub and coupled to support a rotating shaft connected to the inner tub so as to reduce vibration and noise caused by driving a motor. A rotating shaft support device for a fully automatic washing machine. 2. The housing has a base plate that is formed radially and is widely in contact with and fixed to a bottom surface of the outer tub by a plurality of bolts; and a circular rib that is formed inside the base plate to prevent water from permeating. A plurality of radial ribs formed on the circular ribs and the base plate to reinforce strength; and a reinforcing shaft connecting the reinforcing ribs, and connecting a rotating shaft to the inside to rotate the rotating shaft with a large number of bearings. A supporting portion that supports the motor, a tightening hole formed on the bottom surface of the supporting portion for fixing a motor stator with a bolt, and a supporting portion having the tightening hole and a rotating shaft. A sealing means provided on an upper portion of the support portion to prevent water from permeating between the support portion; a support protrusion of the support portion and support of the washing outer tub to maintain airtightness between the support portion and the outer tub; It caused Prefecture possible automatic washing machine of the rotating shaft support system according to claim 1, wherein comprising an airtight maintaining means provided, the between. 3. The rotating shaft support device for a fully automatic washing machine according to claim 2, wherein the sealing means includes a seal having an air hole formed so as to maintain an air gap. 4. The airtightness maintaining means is an O-ring.
The rotating shaft support device for a fully automatic washing machine according to claim 2, further comprising: 5. A fixing means for fixing the stator, comprising: a coupling hole formed in a center plate of the stator to which the stator is coupled, and coupled to a clamping hole of the housing body by a plurality of bolts; Circumferential ribs erected on the upper peripheral edge of the central plate body with holes are reinforced with a housing to prevent slippage caused by the repulsive force of the stator coupled to the stator of the motor. The rotating shaft support device for a fully automatic washing machine according to claim 2, further comprising: an insertion groove for connecting a rib.