KR100479079B1 - bearing housing structure of wash machine - Google Patents

Abstract

The bearing housing drainage structure of the washing machine according to the present invention is mounted on the inside of the cabinet and the inner tub connected to the drive shaft of the motor is rotatably disposed so that the wash tub is accommodated and the flange bent at the top to be fixed to the lower side of the tub. A housing body having an additional portion formed therein and a plurality of drainage holes formed at the bottom thereof so that water that collects due to leakage or condensation of the outer tub is discharged to the outside; The bearing mounting groove is formed concave in the central portion of the ridge and the bearing supporting the drive shaft is pressed, and the plurality of drainage passages through which the water is guided to the drain hole in the bearing mounting groove. Since it is not locked, the corrosion resistance of the bearing is improved, as well as the bare There is an effect of increasing the life of the ring.

Description

Bearing housing structure of wash machine

The present invention relates to a bearing housing structure of a washing machine equipped with a bearing for rotatably supporting a rotating shaft in which an inner tank is installed, and more particularly, to prevent corrosion of water in a bearing housing, thereby improving corrosion resistance of the bearing as well as increasing the life of the washing machine. Of the bearing housing structure.

1 is a cross-sectional view of a washing machine in general, generally a washing machine is a device for immersing a dirty laundry in the wash water to remove the dirt by applying an appropriate detergent and mechanical force, the cabinet 10 and the cabinet (10) a plurality of outer tanks 22 disposed inside the plurality of tanks mounted on one side of the cabinet 10 to suspend the outer tank 22 to the cabinet 10 and to perform a damper function. Hanging member 30, the inner tank 23 is formed in the outer tank 22, the inner tank 23 is formed with a dehydration hole (23a) so that the wash water of the outer tank 22, and is disposed below the outer tank 22 A drive shaft 42 is connected to the inner tub 23 to rotate the inner tub 23, and a lower portion of the outer tub 22 is mounted below the motor 40 to mount the inner tub 23. The bearing 52 is accommodated so that the drive shaft 42 is rotatably supported. The bearing 52 is configured to include a housing.

FIG. 2 is a plan view illustrating a bearing housing of a washing machine according to the prior art, and FIG. 3 is a cross-sectional view illustrating a line A-A of FIG. 2.

As shown in FIGS. 2 and 3, the bearing housing 50 has a housing main body in which a bolt hole 53a is formed to be fixed to a lower side of the outer tub 22 at a top thereof, and a flange portion 53 is bent. 51, a ridge 54 formed in the center of the housing main body 51 and having a through hole through which the drive shaft 42 penetrates, and a recess formed in the central portion of the ridge 54 to form the drive shaft ( The bearing 52 on which the support 42 is supported is configured to include a bearing mounting groove 55 into which the bearing 52 is press-fitted.

In addition, a stepped portion 56 is formed on the bottom surface of the housing main body 51, and a stepped bolt hole is fixed to the housing body 51 and the stepped portion 56. 51a and 56a are formed, respectively.

On the other hand, the recent washing machine is added with a hot water function or a drying function, when the air inside the bearing housing 50, which was heated during the operation of the hot water function or the drying function of the washing machine, is released, the ambient air is released. Due to cooling by the saturation humidity is lowered, condensation is generated by the condensation phenomenon on the lower side of the outer tank 22 and the inside of the bearing housing 50, the condensed water is accumulated in the lower side of the bearing housing 50. . In addition, when the sealing of the outer tub 22 and the drive shaft 42 is not perfect, the wash water freshened in the outer tub 22 is leaked and collects on the lower side of the bearing housing 50 on the drive shaft 42. .

The drainage structure of the bearing housing 50 of the washing machine according to the prior art is formed with a plurality of drain holes 57 penetrating the inner and outer sides of the stepped portion 56, so as to leak or condensate the outer tub 22. Due to this, water accumulated in the bearing housing 50 is discharged to the outside of the washing machine through the drain hole 57.

However, the bearing housing drainage structure of the washing machine according to the prior art is formed because the upper end of the ridge is higher than the upper end of the bearing pressed into the bearing mounting groove, condensed water is accumulated in the bearing mounting groove and corrosion occurs in the bearing. There is a problem in that the life of the bearing 52 is shortened.

The present invention has been made to solve the above problems of the prior art, the condensed water accumulated in the bearing mounting groove to improve the structure to smoothly drain to the outside through the drain hole to improve the corrosion resistance of the bearing to improve the life of the bearing It is an object to provide a bearing housing drainage structure of an increased washing machine.

Bearing housing drainage structure of the washing machine according to the present invention for solving the above problems is a plurality of drain holes are mounted on the outer side of the outer tank of the washing machine to secure the motor to the lower portion and to discharge the accumulated water to the outside due to leakage or condensation of the outer tank A housing body formed on the bottom surface, a ridge portion formed in the center of the housing body and having a through hole through which the drive shaft of the motor penetrates in the center thereof, and a recess formed in the center of the ridge portion along the through hole to support the drive shaft. And a plurality of drainage passages formed in the upper portion of the ridge so that the bearing is inserted into the bearing mounting groove and the bearing and the bulge are guided to the drain hole.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a cross-sectional view schematically showing a washing machine according to the present invention, FIG. 5 is a plan view showing a bearing housing of the washing machine according to the present invention, and FIG. 6 is a cross-sectional view illustrating the B-B line of FIG. 5.

In the washing machine according to the present invention, as illustrated in FIGS. 4 to 6, an outer tub 122 in which the wash water is freshly formed is disposed in the cabinet 110 having an appearance and an upper side thereof, and one side of the cabinet 110. A plurality of hook members 130 are installed at the same time to suspend the outer tub 122 to the cabinet 110 and perform a damper function.

In addition, an inner tub 123 having a dehydration hole 123a is accommodated in the outer tub 122 to allow the wash water of the outer tub 122 to enter, and a driving shaft 142 is connected to the inner tub 123 to connect the inner tub. A motor 140 for rotating 123 is disposed below the outer tub 122, and the motor 140 is mounted below the outer tub 122 and the drive shaft 142 is rotatable inside. The bearing housing 150 in which the bearing 152 is supported is mounted.

On the other hand, the lower portion of the outer tank 122 is provided with a drain hose 126 and a drain pump 127 for discharging the wash water, the bottom surface of the inner tank 123 is a pulsator for increasing the efficiency of washing 125 is provided.

Accordingly, washing is performed while the inner tub 123 is rotated according to the operation of the driving motor 140 in a state in which the outer tub 122 is fixed as being suspended through the hook member 130 in the cabinet 110.

And, the upper side of the cabinet 110, the control unit 114 for operating the operation of the washing machine is installed, the upper side of the cabinet 110 forms the upper surface of the cabinet 110, and at the same time safety and foreign material prevention and A cover 116 for input of laundry, detergent, softener, or the like is installed to be openable and closed.

In addition, the upper end of the inner tank 123 is provided with an auto balance 124 to maintain the balance by attenuating the vibration generated when the inner tank 123 is rotated.

On the other hand, the recent washing machine is added to the hot water function or drying function, when the air inside the bearing housing 150 that was heated during the operation of the hot water function or drying function of the washing machine is released, the ambient air is released Due to cooling by the saturation humidity is lowered, condensation water is generated by the dew condensation on the lower side of the outer tank 122 and the inner surface of the bearing housing 150, the condensed water is concentrated on the lower side of the bearing housing 150 do. In addition, when the sealing of the outer tub 122 and the drive shaft 142 is not perfect, the wash water freshened in the outer tub 122 leaks and collects on the lower side of the bearing housing 150 on the driving shaft 142. .

As shown in FIGS. 4 and 5, the bearing housing 150 of the washing machine according to the present invention has a flange portion 153 that is bent at an upper end thereof so as to be fixed to the lower side of the outer tub 122, and the outer tub ( Due to the leakage or condensation of the 122, the housing body 151 having a plurality of drain holes 157 is formed so that water is discharged to the outside, and the through shaft is raised in the center of the housing body 151 to penetrate the drive shaft 142. A bearing mounting groove 155 having a hole formed therein, a bearing recessed groove 155 formed in a concave portion at the center of the ridge 154 to support the driving shaft 142, and a bearing mounting groove And a plurality of drainage passages for draining the deceased to the drain hole 157 at 155.

Here, the drain passage is formed of a groove portion 158 formed lower than the upper end of the bearing 152 on the upper end of the ridge 154 so that the water in the bearing mounting groove portion 155 flows down into the groove portion.

In more detail, a bolt hole 153a is formed in the flange portion 153 formed at the upper end of the housing main body 151 to be fixed to the lower end of the outer tub 122, and the bottom surface of the housing main body 151 is Stepped portions 156 are spaced apart from the outer circumference of the ridge 154 by a predetermined distance, and a drain hole 157 is formed in the inner and outer sides of the stepped portion 156. In addition, bolt housings 151a and 156a to which the motor 140 is fixed are formed in the housing body 151 and the stepped part 156, respectively.

Here, since the drain hole 157 is constantly vented to the outside air, the amount of condensate generated in the bearing housing 150 may be reduced, and the lower side of the bearing 152 may be caused by the occurrence of condensate or leakage of the outer tub 122. The water flowing to it is discharged to the outside.

In addition, the central portion of the ridge 154 is formed with the bearing mounting groove 155 recessed downward to mount the bearing 152 on which the drive shaft 142 is rotatably supported, and the bearing mounting groove 155. The bearing 152 is vertically pressed in and fixed to it.

In addition, the upper end of the ridge 154 is formed with the groove portion 158 evenly disposed concentrically and orthogonally to the central portion, the space between the side of the ridge 154 and the upper end of the bearing 152 Water that accumulates therein flows through the groove 158 to the lower side of the ridge 154 and collects on the bottom surface of the bearing body 151. The collected water flows into the stepped portion 156 and flows into the drain hole. 157 is made to be discharged to the outside.

The drainage structure of the bearing housing 150 of the washing machine according to the present invention as described above has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed herein, but within the technical scope of the invention. Of course, various modifications, including materials, can be made by those skilled in the art.

The bearing housing drainage structure of the washing machine according to the present invention constituted as described above includes a plurality of drainage passages through which the deceased is guided to the drain hole in the bearing mounting groove, so that the bearings are not submerged in water. This improvement has the effect of increasing the life of the bearing as well.

1 is a cross-sectional view showing a washing machine in general,

2 is a plan view showing a bearing housing of a washing machine according to the prior art,

3 is a cross-sectional view taken along the line A-A of FIG.

4 is a cross-sectional view schematically showing a washing machine according to the present invention;

5 is a plan view showing a bearing housing of the washing machine according to the present invention;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5.

<Explanation of symbols on main parts of the drawings>

110: cabinet 114: control unit

116: cover 122: outer tank

123: inner tank 124: auto balance

125: pulsator 126: drain hose

127: drain pump 130: hook member

140: motor 142: drive shaft

150: bearing housing 151: housing body

152: bearing 153: flange

154: ridge 155: bearing mounting groove

156: stepped portion 157: drain hole

158: groove

Claims (2)

A housing main body mounted at the lower side of the outer tub of the washing machine, the housing body having a plurality of drainage holes formed at a bottom thereof to fix the motor to the lower portion and to discharge the accumulated water to the outside due to leakage or condensation of the outer tub; A bulge portion which is raised in the center of the housing body and has a through hole through which a drive shaft of the motor penetrates in a center portion thereof; A bearing mounting groove formed in a center portion of the ridge portion along a through hole, the bearing supporting the driving shaft being press-fitted; The bearing housing drainage structure of the washing machine, characterized in that it comprises a plurality of drainage passage formed in the upper portion of the bulge so that the deceased is guided to the drain hole between the bearing and the ridge. The method of claim 1, The drainage passage is a bearing housing drainage structure of the washing machine, characterized in that the groove portion formed lower than the upper end of the bearing in the upper portion of the ridge so that the debris flows into the drain hole between the bearing and the ridge.