KR20060126178A - Heater combining structure of washing machine, and combining method of the same - Google Patents

Abstract

A combining structure of a heater of a washing machine and a combining method thereof are provided to prevent the crack of the water storage tub due to the insertion of the sealing member by reducing the stress caused at the water storage tub, and to increase the assembly effect by mounting the stopper. A combining structure of a heater of a washing machine comprises: a heater; a water storage tub having a first heater insertion hole(191) in which the heater is inserted, and a first insertion hole formation unit where the heater insertion hole is formed; a sealing member(300) for sealing the interval between the heater and the water storage tub; and an inner flange(400) having a second heater insertion hole corresponded with the first heater insertion hole, wherein the heater is inserted, and a second insertion hole formation unit where the second heater insertion hole is formed. The inner flange is contacted with the sealing member and the first insertion hole formation unit. The sealing member is contacted with the first and second insertion hole formation units. The heater contains a stopper(210) for fixing the inner flange.

Description

Heater combining structure of washing machine, and combining method of the same}

1 is a plan view showing the bottom of the reservoir is equipped with a heater according to the spirit of the present invention.

Figure 2 is a rear perspective view of the reservoir equipped with the heater shown in FIG.

Figure 3 is an exploded perspective view showing a heater coupling structure according to the present invention.

4 is a coupling diagram of the heater coupling structure shown in FIG.

FIG. 5 is a vertical sectional view of the heater coupling structure shown in FIG. 4. FIG.

Figure 6 is a perspective view showing the inner flange used in the heater coupling structure according to the present invention.

FIG. 7 is a side view of the inner flange shown in FIG. 6. FIG.

8 is a perspective view showing a stopper used in the heater coupling structure according to the present invention.

9 and 10 are views showing the operation of the stopper used in the heater coupling structure according to the present invention.

<Explanation of symbols for the main parts of the drawings>

190: reservoir 191: first heater insertion hole

192: first insertion hole forming unit 200: heater

201: pressing plate 205: assembly bolt

210: stopper 300: sealing member

400: inner flange 401: second insertion hole forming portion

402: contact portion 403: second heater insertion hole

410: stopper projection

The present invention relates to a washing machine, and more particularly, to a heater coupling structure and a coupling method of the washing machine that can increase the coupling reliability of the reservoir and the heater coupled thereto.

In general, a washing machine is provided with a reservoir in an inner space of a cabinet. The reservoir is supported by a damper connected to the upper part of the cabinet, and wash water is stored therein. In addition, the washing tank is rotatably installed in the reservoir. In detail, a plurality of through-holes are formed on the bottom and side of the washing tank, so that the wash water stored in the storage tank freely flows between the washing tank and the storage tank to remove dirt from the laundry.

On the other hand, the bottom surface of the reservoir is installed a heater for heating the wash water to make hot water. Therefore, even if cold water is introduced into the reservoir in winter, when the heater is operated, it is heated to an appropriate temperature for washing, so that it is not necessary to connect the tap with the hot water discharged separately.

The conventional technical contents of the reservoir equipped with the heater functioning as described above are described in detail in Korean Patent Application Publication No. 10-2003-0055973 filed by the present applicant.

Generally, however, the reservoir is a plastic injection which is of low strength compared to the heater and the bolt. Therefore, as the stress generated as described above is continuously applied to the inside of the reservoir, a crack is generated in the reservoir portion to which the heater is coupled. Then, there is a disadvantage in that the product reliability of the washing machine is greatly reduced, such as leakage of wash water through the crack.

An object of the present invention is to provide a heater coupling structure of a washing machine and a coupling method thereof, by improving a coupling structure for coupling a heater to a reservoir, and preventing the occurrence of cracks in the reservoir.

The heater coupling structure of the washing machine according to the present invention includes a heater capable of heating wash water; A reservoir having a first heater insertion hole into which the heater is inserted and a first insertion hole forming portion forming the heater insertion hole; A sealing member for sealing between the heater and the reservoir; And an inner flange having a second heater insertion hole corresponding to the first heater insertion hole, into which the heater is inserted, and a second insertion hole forming portion forming the second heater insertion hole.

The inner flange is in contact with the sealing member and the first insertion hole forming unit, and the sealing member is in contact with the first insertion hole forming unit and the second insertion hole forming unit.

In addition, the heater coupling method of the washing machine according to the present invention comprises a reservoir having a heater, a first heater insertion hole into which the heater is inserted, and a first insertion hole forming portion forming the heater insertion hole, and between the heater and the reservoir. An inner flange having a sealing member for sealing, a second heater inserting hole corresponding to the first heater inserting hole, into which the heater is inserted, and a second inserting hole forming portion forming the second heater inserting hole; Preparing; Inserting the heater into the first heater insertion hole and the second heater insertion hole; Fixing the inner flange to the reservoir while contacting the inner flange together with the sealing member and the first insertion hole forming portion; And closing the sealing member between the heater and the water reservoir while contacting the sealing member with the first insertion hole forming portion and the second insertion hole forming portion together.

According to the heater coupling structure and the coupling method of the washing machine according to the present invention, the inner flange is in contact with the sealing member together with the reservoir, and the pressure transmitted from the sealing member is dispersed in the two members. Therefore, since the stress generated in the reservoir in response to the pressure is reduced, cracking of the reservoir due to the insertion of the sealing member can be prevented.

In addition, according to the heater coupling structure, by installing the stopper, as well as the reliable pressurization to the inner flange, as well as the assembly of the heater coupling structure can be facilitated.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the spirit of the present invention is not limited to the embodiments presented, and other embodiments included within the scope of other inventive inventions or the scope of the present invention can be easily made by adding, changing, or deleting other elements. I can suggest

1 is a plan view showing the bottom of the reservoir equipped with a heater according to the spirit of the present invention, Figure 2 is a rear perspective view of the reservoir equipped with a heater shown in FIG.

1 and 2 together, the reservoir 190 of the washing machine according to the present invention has a cylindrical shape having a predetermined diameter and height.

In detail, the reservoir 190 is formed with a damper insertion groove 110 for coupling one end of the damper to the side. In addition, a through hole for penetrating the washing shaft 150 is formed in the center portion. And, one side of the bottom surface of the reservoir 190 includes a heater seating recess 120 recessed in a predetermined depth and shape in order to allow the heater 200 to be seated.

In addition, the bottom surface of the heater seating groove 120, the drain port 140 for draining the wash water, and at least one heater cover fastening boss 130 protruding to a predetermined height on the edge of the heater seating groove 120. Included.

In addition, a thermostat 122 for detecting whether the heater 200 is overheated is mounted at one side of the heater seating groove 120, and the heater is fixed at an upper side of the thermostat 122. The clamp 121 is mounted.

In addition, a heater insertion hole 191 for inserting the heater 200 is formed in the bottom surface of the reservoir 190. In detail, the heater insertion hole 191 is formed in the bottom surface of the reservoir 190 to a predetermined depth, to prevent moisture or wash water from penetrating into the terminal portion of the heater 200. to be.

In addition, the heater 200 accommodated in the heater seating groove 120 is formed having a predetermined diameter and length, the heater pipe 201 is bent a plurality of times at a predetermined position and are formed at both ends of the heater pipe. A power connection part 203 is electrically connected to the heater pipe 201 to apply power.

In addition, the heater 200 is a sealing member 300 is inserted through the power connection 203. And, before the sealing member 300 is inserted, the pressing plate 206 for pressing the sealing member 300 is inserted first. In addition, the rear side of the sealing member 300 is recessed to a predetermined depth so that the sealing member 300 is seated, and a sealing case 202 is inserted to prevent the wash water from leaking from the heater insertion hole 191. . Here, the sealing case 202 is strongly adhered to the outer wall of the reservoir 190 by a fastening member which will be described later.

Meanwhile, the pressing plate 206 and the sealing case 202 are tightly tightened by the assembly bolt 205 and the assembly nut 204 passing through the central portion of the pressing plate 206. In detail, as the assembly nut 204 threaded to the outer circumferential surface of the assembly bolt 205 is tightened, the sealing member 300 receives a strong compressive force between the pressing plate 206 and the sealing case 202. do. Here, the sealing member 300 is a material having a predetermined elastic force and flexibility is used, preferably a rubber material may be used.

In more detail, the sealing member 300 is the same shape or slightly smaller than the heater insertion hole 191, it is easily inserted into the heater insertion hole 191. However, the thickness of the sealing member 300 is formed thicker than the thickness of the reservoir (190).

Here, when the sealing member 300 is subjected to the compressive force by the assembly bolt 205 and the assembly nut 204, the upper portion of the sealing member 300 is extended to the inner peripheral surface of the reservoir 190 as shown. . Then, the area of the sealing member 300 is wider than the area of the heater insertion hole 191. Therefore, the sealing member 300 is spread sideways by the compressive force, thereby completely sealing the heater insertion hole 191, the washing water leakage to the heater insertion hole 191 is eliminated.

Meanwhile, as described above, the heater pipe 201 of the heater 200 is a conductor having a predetermined diameter and length, and is bent and formed a plurality of times. Here, the length and the number of bending of the heater pipe 201 may be bent a suitable number of times according to the length of the heater pipe 201 required.

On the other hand, according to the present invention, by installing the inner flange 400, the crack (crack) that can be generated due to the coupling of the heater 200 in the reservoir 190 can be prevented. This will be described later.

3 is an exploded perspective view illustrating a heater coupling structure according to the present invention, FIG. 4 is a coupling diagram of the heater coupling structure shown in FIG. 3, and FIG. 5 is a vertical cross-sectional view of the heater coupling structure shown in FIG. 4.

3 to 5 together, the heater 200 coupling structure according to the present invention is a heater 200, the reservoir 190 is coupled to the heater 200, and the inner installed in the reservoir 190 An inner flange 400. In addition, the coupling structure of the heater 200 includes a sealing member 300 that seals between the reservoir 190 and the heater 200.

The heater 200 has a pressing plate 201 supporting it and a sealing case 202 formed at an end portion of the heater pipe that directly contacts the wash water and heats the wash water. In order to simplify the manufacturing process, the heater 200 may form an assembly with the sealing member 300. The heater 200 may be a single article combined with the sealing case 202, the heater pipe, and the sealing member 300 by separate assembly nuts 204 and assembly bolts 205. .

The reservoir 190 is provided with a first heater insertion hole 191 into which the heater 200 is inserted and a first insertion hole forming part 192 forming the first heater insertion hole 191.

In addition, according to the present invention, the heater 200 has a stopper 205 for fixing the inner flange 400. Here, the stopper 205 is presented as an article of the heater 200, but this is exemplary, and the stopper 205 may be a component of an independent article or another article.

The sealing member 300 is pressed by a predetermined pressure. Then, the sealing member 300 is sealed between the heater 200 and the reservoir 190. Here, the pressure applied to the sealing member may be provided by tightening the assembly nut 204 and the assembly bolt 205.

The inner flange 400 is installed inside the reservoir 190 to contact the sealing member 300 and a predetermined portion of the reservoir 190, in detail, with the first insertion hole forming portion 192. Then, the contact between the heater 200 and the reservoir 190 is sealed by each contact portion of the inner flange 400 with the sealing member 300 and the first insertion hole forming portion 192. In addition, due to the deformation of the sealing member 300, the sealing member 300 and the first insertion hole forming part 192 are also sealed. In other words, according to the present invention, there is an advantage that the heater 200 and the reservoir 190 are sealed in three parts.

As described above, the inner flange 400 is connected to the stopper 205 to seal the reservoir 190 and at the same time corresponds to the pressure applied by the sealing member 300. Therefore, the stress generated corresponding to the pressure applied by the sealing member 300 in the reservoir 190 is reduced, so that the cracking of the reservoir 190 may be prevented.

6 is a perspective view showing an inner flange used in the heater coupling structure according to the present invention, and FIG. 7 is a side view of the inner flange shown in FIG.

6 and 7 together, the heater 200 coupling structure according to the present invention includes an inner flange 400.

In detail, the inner flange 400 corresponds to the first heater insertion hole 191 to form a second heater insertion hole 403 into which the heater 200 is inserted, and the second heater insertion hole 403. The second insertion hole forming portion 401 is formed. In addition, the inner flange 400 is formed with a stopper locking protrusion 410 to which the stopper 210 can be caught. In addition, the inner flange 400 includes a contact portion 402 extending from the second insertion hole forming portion 401 by a predetermined length to increase the contact area with the sealing member 300, and the inner flange 400. Sealing cases 404 and 405 are formed on the upper and lower portions, respectively, to support them.

As the contact portion 402 is formed on the inner flange 400, the sealing member 300 is in contact with the first insertion hole forming portion 192 and the second insertion hole forming portion 401, and the predetermined contact portion 402 is formed. The contact area of. Therefore, the pressure applied by the sealing member 300 is dispersed in the first insertion hole forming part 192 and the second insertion hole forming part 401, so that the inside of the first insertion hole forming part 192 is separated. The stress generated corresponding to the pressure is reduced. Therefore, cracks that may occur due to the insertion of the sealing member 300 in the reservoir 190 can be prevented.

8 is a perspective view showing a stopper used in the heater coupling structure according to the present invention.

Referring to FIG. 8, the heater 200 coupling structure according to the present invention includes a press plate 201 supporting the heater 200, an assembly bolt 205 passing through the press plate 201, and the assembly bolt 205. Is provided with a stopper 210.

An insertion hole 211 for insertion into the assembly bolt 205 and a fixing hole 212 connected to the insertion hole 211 are formed in the stopper 210. The insertion hole 211 is formed larger than the diameter of the assembly bolt 205, the assembly bolt 205 can be easily inserted. In addition, the fixing hole 212 has a diameter smaller than that of the assembly bolt 205 so that the assembly bolt 205 inserted into the insertion hole 211 is forcibly fitted. Then, the stopper 210 is fixed to the assembly bolt 205.

Here, the assembly bolt 205 is rotatably installed with respect to the pressing plate 201, and the stopper 210 is fixed to the assembly bolt 205, so that the stopper 210 is rotatably installed.

In addition, the stopper 210 is provided with a locking protrusion contact portion 211 which contacts the stopper locking protrusion 410 of the inner flange 400 and stops the rotation of the stopper 210.

9 and 10 are views showing the operation of the stopper used in the heater coupling structure according to the present invention. An operation of the stopper 210 will be described with reference to FIGS. 9 to 10. Here, the description of the inner flange 400 and the stopper 210 will be replaced with the description already described above, and redundant description will be omitted.

First, as shown in FIG. 9, the stopper 210 is rotated and adjusted so that the stopper 210 may be covered by the pressing plate 201. Then, the pressing plate 201 is inserted into the second heater insertion hole 403.

Thereafter, as shown in FIG. 10, the assembly bolt 205 is rotated to rotate the stopper 210. Then, the engaging projection contact portion 211 of the stopper 210 is in contact with the stopper engaging projection 410 of the inner flange 400, so that the stopper 210 is caught by the inner flange 400, the rotation thereof Is stopped. In this state, when the assembly bolt 205 and the assembly nut 204 are tightened, the pressure by the tightening is transmitted to the contact portion 402 of the inner flange 400 through the stopper 210. . Then, the inner flange 400 may be in close contact with the reservoir 190.

Hereinafter, a heater coupling method according to the present invention will be described.

First, the heater 200, the reservoir 190, the sealing member 300, and the inner flange 400 are provided. A first heater insertion hole 191 and a first insertion hole forming part 192 are formed in the reservoir 190. In addition, the inner flange 400 includes a second heater insertion hole 403 and the second heater insertion hole 403 corresponding to the first heater insertion hole 191, into which the heater 200 is inserted. The second insertion hole forming portion 401 is formed.

Then, the heater 200 is inserted into the first heater insertion hole 191 and the second heater insertion hole 403. At this time, the sealing member 300 which is one component of the heater 200 is also inserted.

Thereafter, the inner flange 400 is installed in the reservoir 190. This installation may be accomplished by receiving the tightening pressure of the assembly bolts and nuts 204, 205 by the stopper 210 as described above. Then, the inner flange 400 is fixed to the reservoir 190 while being in contact with the sealing member 300 and the first insertion hole forming portion 192 together.

Then, the sealing member 300 is contacted with the first insertion hole forming portion 192 and the second insertion hole forming portion 401 together, sealing the gap between the heater 200 and the reservoir 190. Let's do it. Such sealing may be achieved by pressure deformation of the sealing member 300 by the tightening pressure of the assembly bolts and nuts 204 and 205.

According to the heater coupling structure and the coupling method of the washing machine according to the present invention having the above configuration, the inner flange is in contact with the sealing member together with the reservoir, the pressure transmitted from the sealing member is dispersed in the two members. Therefore, since the stress generated in the reservoir in response to the pressure is reduced, there is an effect that the crack generation of the reservoir due to the insertion of the sealing member can be prevented.

In addition, according to the heater coupling structure, the stopper is installed, there is an effect that the assembly of the heater coupling structure can be facilitated, as well as reliable pressurization to the inner flange.

Claims (11)

A heater capable of heating wash water; A reservoir having a first heater insertion hole into which the heater is inserted and a first insertion hole forming portion forming the heater insertion hole; A sealing member for sealing between the heater and the reservoir; And And an inner flange having a second heater insertion hole corresponding to the first heater insertion hole, into which the heater is inserted, and a second insertion hole forming portion forming the second heater insertion hole. The inner flange is in contact with the sealing member and the first insertion hole forming portion, And the sealing member is in contact with the first insertion hole forming part and the second insertion hole forming part. The method of claim 1, The heater coupling structure of the washing machine, characterized in that it comprises a stopper (stopper) for fixing the inner flange. The method of claim 2, The stopper is combined heater structure of the washing machine, characterized in that rotatably installed. The method of claim 2, Heater coupling structure of the washing machine, characterized in that the inner flange is formed with a stopper locking projection that the stopper can be caught. The method of claim 1, The heater coupling structure of the washing machine characterized by sealing between the heater and the water storage tank by each contact portion of the inner flange with the sealing member and the first insertion hole forming portion. With heater, A reservoir having a first heater insertion hole into which the heater is inserted and a first insertion hole forming part forming the heater insertion hole; A sealing member for sealing between the heater and the water reservoir; Providing an inner flange having a second heater insertion hole corresponding to the first heater insertion hole, into which the heater is inserted, and a second insertion hole forming portion forming the second heater insertion hole; Inserting the heater into the first heater insertion hole and the second heater insertion hole; Fixing the inner flange to the reservoir while contacting the inner flange together with the sealing member and the first insertion hole forming portion; And And sealing the gap between the heater and the water reservoir while contacting the sealing member with the first insertion hole forming part and the second insertion hole forming part together. The method of claim 6, The step of providing the heater comprises installing a stopper (stopper) for fixing the inner flange to the reservoir. The method of claim 7, wherein The installing of the stopper may include installing the stopper to be rotatable about a predetermined axis. The method of claim 7, wherein The step of providing the inner flange comprises the step of forming a stopper engaging projection that the stopper can be caught in the inner flange comprises a heater coupling method. The method of claim 9, The fixing of the inner flange with respect to the reservoir includes the step of rotating the stopper to engage the stopper engaging projection. The method of claim 7, wherein The inserting of the heater into the first heater insertion hole and the second heater insertion hole may include inserting the stopper into the first heater insertion hole and the second heater insertion hole. How to combine a heater.

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