KR20090046067A - Washing machine and assembling method thereof - Google Patents

Abstract

The present invention relates to a washing machine and a method for assembling a washing machine, and more particularly, to a washing machine capable of firmly attaching a motor and reducing noise and vibration generated during a washing operation.

The present invention includes a tub, a bearing housing insert-inserted into the tub so that the fastening part is exposed, a stator coupled to the fastening part, a bracket for supporting the stator as the bearing housing, and a coupling part for coupling the stator and the bracket.

Washing machine, drum washing machine, motor, stator, rotor

Description

How to assemble a washing machine and washing machine {WASHING MACHINE AND ASSEMBLING METHOD THEREOF}

The present invention relates to a washing machine and a method for assembling a washing machine, and more particularly, to a washing machine capable of firmly attaching a motor and reducing noise and vibration generated during a washing operation.

1 is a longitudinal sectional view showing a conventional washing machine configuration, and FIG. 2 is an enlarged detail view of a portion A shown in FIG. 1, and is a longitudinal sectional view of a driving unit structure of the conventional washing machine.

1 and 2, a washing machine according to the related art includes a tub 2 installed inside the cabinet 1, a drum 3 installed inside the tub 2, and a shaft on the drum 3. It is provided with a shaft 4 connected to transmit the driving force of the motor 5 to the drum 3, and a bearing provided on the outer peripheral surface of both ends of the shaft (4). In the center of the rear wall portion 30 of the tub 2, a bearing housing 7 for supporting a bearing installed at both ends of the shaft 4 is provided. At this time, the bearing housing 7 is inserted in the injection molding of the tub (2).

Meanwhile, the rotor 13 constituting the direct type motor 5 is fastened to the center of the rear end of the shaft 4, and the stator 14 is fastened to the rear wall 30 of the tub 2 inside the rotor 13. Will be located.

On the rear wall portion 30 of the tub 2, a hub 31 is provided with a bearing housing 7 inserted therein during injection molding of the tub 2, and a fastening member 15a is disposed outside the hub 31. Fastening bosses 32 for fixing the stator 14 on the rear wall portion 30 of the tub 2 are provided spaced apart at regular intervals along the circumferential direction.

A supporter 17 supporting the stator 14 is interposed between the rear wall portion 30 of the tub 2 and the stator 14. In order to fasten the supporter 17 and the tub rear wall 30, a plurality of fastening members 15d are coupled inside the outer circumferential surface of the supporter 17, and in order to fix the stator 14 to the supporter 17. It has a fastening member 15a.

The washing machine according to the related art has a problem that the mounting structure is complicated because a stator is installed on the supporter after the supporter is installed on the rear wall of the tub, and a boss for fastening each member and a fastening member are required.

In addition, the washing machine according to the prior art, because the supporter is installed on the plastic tub, the tub may be deformed by the external force during the supporter fastening operation, it is difficult to maintain the concentricity because the stator is separated from the correct position and fixed, and also the washing operation Interference may occur between components during the operation, resulting in noise and vibration. Therefore, there is a need for improvement.

The present invention has been made to improve the above problems, and an object thereof is to provide a washing machine and a method of assembling the washing machine, which reduces the number of parts required for installation work by simplifying the mounting structure.

In addition, an object of the present invention is to provide a washing machine and a method of assembling the washing machine, which can be assembled in the correct position by improving the mounting structure.

In addition, an object of the present invention is to provide a washing machine and a method for assembling the washing machine, which can reduce noise or vibration generated during driving.

Another object of the present invention is to provide a washing machine and a method of assembling the washing machine, which can improve the fastening strength between the members.

In addition, an object of the present invention is to provide a washing machine and a method of assembling the washing machine by improving the coupling structure between the members, thereby improving assembly.

Washing machine according to an aspect of the present invention includes: a tub; A bearing housing insert-inserted into the tub to expose the fastening portion; A stator coupled to the fastening part; A bracket for supporting the stator with the bearing housing; And a coupling part for coupling the stator to the bracket.

In addition, the fastening portion is installed to protrude from the rear wall portion of the tub.

In addition, the fastening portion includes a fastening hole. In one embodiment, the fastening hole is formed with a thread. In another embodiment, the part in which the fastening hole is formed is formed to protrude from the fastening part. As another embodiment, a locking jaw portion is formed in the stator corresponding to the fastening hole.

In addition, the rear wall portion of the stator is formed with a mounting groove corresponding to the bracket.

The bracket may further include a coupling hole portion corresponding to the through hole portion formed in the stator; A passage hole through which the shaft passes; And an inclined portion in which an edge of the through hole portion is inclined in the tub direction. In one embodiment, the bracket is further formed with a cooling hole for dissipating heat generated from the bearing housing. In addition, the cooling hole is formed between the coupling hole and the through hole, or is formed on the inclined portion.

In addition, the inner side of the bracket is formed to be supported by the rear end of the tub. Here, the inside of the bracket is preferably in close contact with the outer peripheral surface of the rear end of the tub. In another embodiment, the inside of the bracket is formed to be supported by the rear end of the bearing housing. Here, the inside of the bracket is preferably in close contact with the outer peripheral surface of the rear end of the bearing housing.

In addition, the coupling portion, a fastening hole portion formed in the stator; And an auxiliary coupling part formed on the bracket corresponding to the fastening hole part.

In addition, the method of assembling the washing machine according to the present invention includes: forming a bearing housing; Insert injection molding the tub into the bearing housing such that the fastening portion of the bearing housing is exposed to the outside while the bearing housing is supported by a jig; Coupling a stator to the fastening part; Coupling a bracket to the stator; And fastening the bracket, the stator and the fastening part by using the fastening member.

In addition, the insert injection molding of the tub is characterized in that the fastening portion is molded so as to protrude to the outside.

In addition, the insert injection molding of the tub is characterized in that the insert injection molding in a state in which the fastening part is supported using the jig.

Washing machine according to another aspect of the present invention includes: a tub; A bearing housing insert inserted into the tub to expose the fastening hole; A stator coupled to the fastening hole; A bracket for supporting the stator with the bearing housing; And a coupling unit coupling the stator and the bracket.

In addition, a portion where the fastening hole is formed is installed to protrude from the rear wall of the tub.

An assembly method of a washing machine according to an aspect of the present invention includes: forming a bearing housing; Insert injection molding the tub into the bearing housing such that the fastening portion of the bearing housing is exposed to the outside while the bearing housing is supported using a jig; Coupling the stator to the bracket; Coupling the combined stator and bracket to the fastening unit; And fastening the bracket, the stator and the fastening part by using the fastening member.

In addition, the insert injection molding of the tub, it characterized in that the fastening portion is molded so as to protrude to the outside.

In addition, the insert injection molding of the tub is characterized in that the insert injection molding in a state in which the fastening part is supported using the jig.

According to another aspect of the present invention, a method for assembling a washing machine includes: forming a bearing housing; Insert injection molding the tub into the bearing housing so that the fastening hole of the bearing housing is exposed to the outside while the bearing housing is supported by a jig; Coupling the stator to the bracket; Coupling the combined stator and bracket to the fastening unit; And fastening the bracket, the stator and the fastening hole by using the fastening member.

In addition, the insert injection molding of the tub, it characterized in that the molding so that the part formed with the fastening hole protrudes to the outside.

In addition, the insert injection molding of the tub is characterized in that the insert injection molding using the jig while supporting the portion in which the fastening hole is formed.

In the washing machine according to the present invention, since the bearing housing is insert-extruded to the rear of the tub without a separate fastening member, the fastening member required for mounting the bearing housing is omitted, and the structure of the rear of the tub is simplified, thereby reducing the time and cost required for motor installation. Can be saved.

In addition, in the present invention, the fastening portion on which the stator is mounted in the bearing housing protrudes from the rear wall of the tub. Therefore, since the metal bearing housing and the metal stator are closely attached to each other, deformation between the members does not occur when assembling the stator, so that the stator can be assembled at the correct position.

In addition, in the present invention, the fastening portion on which the stator is mounted in the bearing housing protrudes from the rear wall portion of the tub. Therefore, since the molding operation can be performed in the state of restraining the fastening part with a jig and placing it at the correct position during the insert injection molding of the tub, the concentricity of the stator and the shaft can be maintained. Since the concentricity of the stator and the shaft can be maintained, the spacing between the tub and the drum to which they are coupled can be reduced, thereby miniaturizing the washing machine.

In addition, the present invention is formed to protrude a portion in which the fastening hole is formed, the locking step portion is formed in the stator corresponding to the fastening hole. Therefore, when assembling the stator into the bearing housing, the stator is positioned at the correct position while the fastening hole is formed inside the locking jaw portion, so that the distance between the stator and the rotor can be maintained uniformly, and noise generation of the motor can be reduced.

In addition, the present invention is provided with a bracket to pressurize the stator to the bearing housing, it is possible to improve the fastening force between the bearing housing and the stator, and also to prevent the phenomenon that the force is concentrated on a specific portion, the stator is eccentrically coupled Can be prevented. In addition, it is possible to suppress the movement of the stator by the vibration generated during the driving of the washing machine to reduce the generation of noise and to extend the life of the product.

In addition, the present invention includes a coupling portion for coupling the stator and the bracket. Therefore, since the assembly of the stator and the bracket can be coupled to the bearing housing in the state where the stator and the bracket are assembled, the assemblability is improved and the productivity can be improved.

In addition, in the present invention, since the inside of the bracket is supported by the rear end of the tub or the rear end of the bearing housing, the vibration generated in the shaft can be effectively dispersed.

In addition, in the present invention, since the bearing housing is inserted into the tub while supporting the fastening portion exposed to the outside, the insert operation can be easily performed, the productivity is also improved, and the bearing housing can be inserted in the correct position.

Hereinafter, an embodiment of a washing machine according to the present invention will be described with reference to the accompanying drawings. For convenience of explanation, a drum washing machine will be described as an example. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

3 is an exploded perspective view showing a stator mounting structure of a washing machine according to an embodiment of the present invention, Figure 4 is a cross-sectional view showing a stator mounting structure of a washing machine according to an embodiment of the present invention.

3 and 4, a washing machine according to an embodiment of the present invention includes a tub 50, a bearing housing 60, a stator 67, a bracket 80, a stator 67, and a washing machine. It includes a coupling portion 90 for coupling the bracket (80).

The bearing housing 60 rotatably supports the shaft 52, and inserts are injected into the tub 50 to expose the fastening portion 70. Since the tub 50 is molded to expose the fastening part 70 during injection molding, the tub 50 may be injected while the fastening part 70 exposed to the outside is fixed with a jig (not shown). Thus, since the tub 50 is injection-molded in a state in which the fastening part 70 is fixed by a jig (not shown) installed on the outside, the bearing housing 60 can be seated at the correct position in relation to the tub 50. have. Thus, the fastening portion 70 exposed from the rear wall portion 51 of the tub 50 guides the concentricity of the bearing housing 60 and the tub 50 to be maintained, and also the bearing housing 60 and the tub 50. Prevent the concentricity of As described above, since the concentricity of the bearing housing 60 and the tub 50 is maintained, the concentricity between the stator 67 installed in the bearing housing 60 and the rotor 69 installed in the shaft 52 is also maintained. . In addition, the interval between the drum 55 and the tub 60 coupled to the shaft 52 can also be maintained uniformly, thereby preventing deformation or damage caused by interference between the tub 50 and the drum 55 during operation. can do. Since the risk of interference is reduced, it is possible to reduce the size of the tub 60 or increase the size of the drum 55. That is, the size of the washing machine can be miniaturized.

In this embodiment, the bearing housing 60 is made of metal, the tub 50 is made of a plastic material. It is preferable that the bearing housing 60 be aluminum or an aluminum alloy due to the characteristics of the bearing housing 60 which is rotated at a high speed. Of course, the tub 50 is made of a metal material and the bearing housing 60 may be made of a plastic material, and each of the tub 50 or the bearing housing 60 may be made of a plastic material, or may be made of a metal material. have. When the two members are made of a metal material, they may be molded by a die casting method. Detailed configuration of the bearing housing 60 will be described later with reference to the accompanying drawings.

The stator 67 is coupled to the fastening portion 70. Since the stator 67 is coupled to the fastening portion 70 of the metal material, it is possible to prevent the position of the stator 67 from being changed by the fastening force during the fastening operation. That is, when the stator 67 is coupled to the tub 50 made of plastic, deformation may occur at a portion to be fastened according to the fastening force. Since the stator 67 of the present embodiment is coupled to the fastening portion 70 of the metal material, such a problem can be prevented. In addition, the fastening portion 70 is preferably formed to protrude from the rear wall portion of the tub 50 to facilitate the coupling of the stator (67).

5 is a perspective view of a bearing housing of a washing machine according to an embodiment of the present invention, Figure 6 is a detailed view of the portion A shown in Figure 4, Figure 7 is a stator mounting of the washing machine according to an embodiment of the present invention An exploded cross-sectional view showing the structure.

3 and 5 to 7, the bearing housing 60 is formed with a hole 61 to which the shaft 52 is rotatably supported. The hole portion 61 is formed in the center of the bearing housing 60 and the shaft 52 is inserted. A jaw portion 61a is formed on an inner wall of the hole portion 61, and a bearing 54 is installed at the jaw portion 61a.

The fastening part 70 is formed in the bearing housing 60. The fastening part 70 is provided to be spaced apart from the hole part 61 by a predetermined interval, and is installed to be exposed or protrude from the rear wall part of the tub 50. Ribs 63 are formed between the fastening portions 70 in order to prevent the bearing housing 60 from being deformed or damaged by vibration generated during driving of the washing machine. The rib 63 is formed in the circumferential direction, the radial direction, or the like.

The fastening part 70 includes a fastening hole 72, and a through hole 67 a is formed in the stator 67 so as to correspond to the fastening hole 72. The bearing housing 60 and the stator 67 are coupled by the first fastening member 76 inserted into the fastening hole 72 and the through hole portion 67a. On the other hand, the fastening hole 72 is formed with a thread so that the first fastening member 76 is coupled.

In one embodiment, the portion 72c in which the fastening hole 72 is formed is formed to protrude from the fastening portion 70. The stator 67 is coupled to the portion 72c in which the fastening hole 72 is formed. Since the portion 72c on which the fastening hole 72 is formed is formed to protrude, the stator 67 may be coupled to the bearing housing 60 without interference with other members during assembly.

Meanwhile, although not attached to the drawing, the fastening hole 72 may be exposed from the rear wall portion of the tub 50, or the portion 72c in which the fastening hole 72 is formed may protrude from the rear wall portion of the tub 50. It may be. That is, the fastening part 70 is inserted into the tub 50, and the fastening hole 72 to which the stator 67 is coupled or the portion 72c in which the fastening hole 72 is formed protrudes from the rear wall of the tub 50. It can also be installed.

The locking jaw portion 67b is formed inside the stator 67 so as to correspond to the portion 72c in which the fastening hole 72 is formed. When the stator 67 and the bearing housing 60 are coupled to each other, a portion 72c having a fastening hole 72 formed therein is inserted into the locking jaw portion 67b, so that the stator 67 is accurately seated in the bearing housing 60. In the present embodiment, since the stator 67 is directly coupled to the bearing housing 60 made of metal without interposing other members, the stator 67 may be coupled to the correct position.

In addition, a mounting groove 67c is formed in the stator 67. The mounting recess 67c is formed in the rear wall portion of the stator 67 corresponding to the bracket 80 so as to facilitate the assembly between the bracket 80 and the stator 67.

The bracket 80 presses and supports the stator 67 toward the bearing housing 60. The bracket 80 has a coupling hole 82 corresponding to the through hole 67a, a passage hole 86 through which the shaft 52 penetrates, and an edge of the passage hole 86 inclined in the tub 50 direction. It includes the inclined portion 88 is formed. The bracket 80 is inserted into the seating recess 67c of the stator 67 disposed in the fastening portion 70 of the bearing housing 60, and the first fastening member 76 is inserted into the coupling hole 82 and the through hole 67a. ) Is coupled to the fastening hole 72, the stator 67 and the bracket 80 are coupled to the bearing housing 60. At this time, the first fastening member 76 presses the bracket 80 toward the stator 67, and the bracket 80 is in point contact or line contact or surface contact with the stator 67 at a plurality of points. That is, the bracket 80 is partially or totally in point contact with the stator 67, or is in line contact or surface contact, in order to prevent pressure concentration at the site where the first fastening member 76 is fastened. Therefore, since the pressing force is evenly transmitted to the stator 67, the stator 67 can be brought into close contact with the bearing housing 60. Since the fastening force by the first fastening member 76 is distributed through the bracket 80 to pressurize the stator 67, it is possible to prevent pressure concentration at a specific point and maintain concentricity of the stator 67. . In addition, since the concentricity of the bearing housing 60 and the stator 67 is maintained by the bracket 80, the space | interval between the stator 67 and the rotor 69 provided in the shaft 52 can also be maintained uniformly.

The inclined portion 88 of the bracket 80 extends in the inward direction of the stator 67, and the hole portion 61 of the bearing housing 60 is inserted into the through hole portion 86 formed at the center of the inclined portion 88. . The inner side 80f of the bracket 80 is supported by the rear end 50f of the tub 50. The inner side 80f of the bracket 80 is preferably formed so that the end of the passage hole 86 is bent. In one embodiment, the inner side 80f of the bracket 80 is formed to be in close contact with the outer circumferential surface of the rear end 50f of the tub 50. When the bracket 80 and the tub 50 are coupled in such a manner as to be in contact with each other, the bracket 80 is supported by the rear end 50f of the tub 50, and the vibration generated in the shaft 52 is applied to the bracket ( 80). Meanwhile, in the present embodiment, the case where the inner side 80f of the bracket 80 is supported by the lower end 50f of the tub 50 has been described as an example, but in the present invention, the inner side 80 of the bracket 80 is a tub. Various modifications are possible, such as may be supported by the rear end of the.

The bracket 80 is formed with a cooling hole 84 for dissipating heat generated from the bearing housing 60. Heat generated while driving the washing machine is discharged through the cooling hole 84. The cooling hole 84 is formed between the coupling hole 82 and the passage hole 86 or is formed in the inclined portion (88). Cooling hole 84 is preferably formed over the entire bracket (80).

As described above, in the present embodiment, the case in which the bearing housing 60, the stator 67, and the bracket 80 are combined using one fastening member 76 has been described as an example, but the present invention is limited thereto. It is not possible to perform a variety of modifications, such as by combining two of each of the three members using a fastening member.

Looking at the assembly method of the washing machine according to an embodiment of the present invention configured as described above are as follows.

8 is a flowchart illustrating a method of assembling a washing machine according to an embodiment of the present invention.

Referring to FIG. 8, a bearing housing 60 is manufactured by injection molding or the like (S10 step). Then, the tub 50 is insert injection molded in a state in which the bearing housing 60 is supported using a jig (not shown) or the like (step S20). In this case, the insert 50 is injected into the tub 50 so that the fastening portion 70 or the fastening hole 72 of the bearing housing 60 is exposed to the outside, and a part 72c in which the fastening portion 70 or the fastening hole 72 is formed. It is preferable that the insert injection is carried out so that)) protrudes from the rear wall of the tub 50. In addition, during the injection molding, the bearing housing 60 is preferably supported at the portion 72c in which the fastening portion 70 or the fastening hole 72 is formed by the jig. As such, the bearing housing 60 is connected to the tub in a state in which the fastening portion 70 or the portion 72c on which the fastening hole 72 is formed, which is exposed to the outside, is not inserted into the tub 50. Since the insert 50 is inserted, the insert work can be easily performed, the productivity can be improved, and the bearing housing 60 can be inserted at the correct position.

After the insert injection operation is completed, the coupling hole portion 82, the through hole portion 67a, and the fastening hole 72 with the stator 67 and the bracket 80 disposed on the coupling portion 70 of the bearing housing 60. ) Is coupled to the first fastening member 76 to the stator 67 and the bracket 80 (steps S30, S40, S50). At this time, since the bearing housing 60, the stator 67, and the bracket 80 made of a metal material are in contact with each other, each member can be stably supported and can maintain concentricity more efficiently.

9 is a cross-sectional view showing a stator mounting structure of a washing machine according to another embodiment of the present invention, FIG. 10 is a detailed view of a part B shown in FIG. 9, and FIG. 11 is a stator of a washing machine according to another embodiment of the present invention. An exploded cross-sectional view showing the mounting structure.

For convenience of description, components substantially the same in construction and operation as the above embodiments are referred to by the same reference numerals, and detailed description thereof will be omitted.

9 to 11, a washing machine according to another embodiment of the present invention includes a coupling unit 90 for coupling the stator 67 and the bracket 80. The coupling part 90 includes a fastening hole part 92 formed in the stator 67 and an auxiliary coupling part 94 formed in the bracket 80 to correspond to the fastening hole part 92. Washing machine according to another embodiment of the present invention, unlike one embodiment in which the bearing housing 60, the stator 67, the bracket 80 is combined in one operation, is coupled in at least two operations. First, the stator 67 and the bracket 80 are coupled by the second fastening member 96. Then, the assembly of the stator 67 and the bracket 80 is coupled to the bearing housing 60 using the first fastening member 76. That is, one embodiment of the present invention simultaneously combines three members, that is, the bearing housing 60, the stator 67, and the bracket 80 through one fastening operation, while another embodiment of the present invention provides a stator ( 67) and the bracket 80 in the assembled state, the assembly and the bearing housing 60 is coupled, thereby improving assembly. Therefore, another embodiment of the present invention can easily assemble the motor 65 can reduce the time or cost required for assembly work.

12 is a flowchart illustrating a method of assembling a washing machine according to another embodiment of the present invention.

12, the bearing housing 60 is manufactured by injection molding or the like (step S100). Then, the tub 50 is insert injection molded in a state in which the bearing housing 60 is supported using a jig (not shown) or the like (step S200). In this case, the insert 50 is injected into the tub 50 so that the fastening part 70 or the fastening hole 72 of the bearing housing 60 is exposed to the outside, and the part 72c in which the fastening part 70 or the fastening hole 72 is formed. It is preferable that the insert is ejected so as to protrude from the rear wall of the tub 50. In addition, during the injection molding, the bearing housing 60 is preferably supported at the portion 72c in which the fastening portion 70 or the fastening hole 72 is formed by the jig. As such, the bearing housing 60 is connected to the tub in a state in which the fastening portion 70 or the portion 72c on which the fastening hole 72 is formed, which is exposed to the outside, is not inserted into the tub 50. Since the insert 50 is inserted, the insert work can be easily performed, the productivity can be improved, and the bearing housing 60 can be inserted at the correct position.

After the insert injection operation is completed, the stator 67 and the bracket 80 are combined first (step S300). Then, after placing the assembled stator 67 and the bracket 80 assembly in the fastening portion 70 or the fastening hole 72 (step S400), the fastening member 70 is used to fasten the assembly. Fastening to the fastening hole 72 (step S500).

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand. In addition, the drum washing machine has been described as an example, but this is merely exemplary, and the present invention may be applied to a washing machine other than the drum washing machine. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a longitudinal sectional view showing a washing machine configuration according to the prior art.

FIG. 2 is an enlarged detail view of a portion A shown in FIG. 1, which is a longitudinal sectional view of a driving unit structure of a washing machine according to the related art.

3 is an exploded perspective view showing a stator mounting structure of a washing machine according to an embodiment of the present invention.

4 is a cross-sectional view showing a stator mounting structure of a washing machine according to an embodiment of the present invention.

5 is a perspective view illustrating a bearing housing of a washing machine according to an embodiment of the present invention.

FIG. 6 is a detailed view of portion A shown in FIG. 4.

7 is an exploded cross-sectional view showing a stator mounting structure of a washing machine according to an embodiment of the present invention.

8 is a flowchart illustrating a method of assembling a washing machine according to an embodiment of the present invention.

9 is a cross-sectional view showing a stator mounting structure of a washing machine according to another embodiment of the present invention.

FIG. 10 is a detailed view of part B illustrated in FIG. 9.

11 is an exploded cross-sectional view showing a stator mounting structure of a washing machine according to another embodiment of the present invention.

12 is a flowchart illustrating a method of assembling a washing machine according to another embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

50: tub 51: rear wall

52: shaft 54: bearing

55 drum 60 bearing housing

61: hole 63: rib

65 motor 67 stator

67a: through hole 69: rotor

70: fastening portion 72: fastening hole

76: first fastening member 80: bracket

82: coupling hole portion 84: cooling hole portion

86: passage hole 88: inclined portion

90: coupling portion 92: fastening hole portion

94: auxiliary coupling portion 96: second fastening member

Claims (24)

Tub; A bearing housing insert inserted into the tub to expose the fastening part; A stator coupled to the fastening part; A bracket for supporting the stator with the bearing housing; And Washing machine comprising a coupling unit for coupling the stator and the bracket. The method of claim 1, The fastening part is a washing machine, characterized in that is installed to protrude from the rear wall of the tub. The method according to claim 1 or 2, The fastening unit washing machine characterized in that it comprises a fastening hole. The method of claim 3, wherein The fastening hole is characterized in that the screw thread is formed. The method of claim 3, wherein The part in which the fastening hole is formed is formed to protrude from the fastening part. The method of claim 3, wherein The washing machine, characterized in that the engaging jaw portion is formed in the stator corresponding to the fastening hole. The method of claim 1, The rear wall of the stator washing machine, characterized in that the mounting groove corresponding to the bracket is formed. The method of claim 1, wherein the bracket, A coupling hole portion corresponding to the through hole portion formed in the stator; A passage hole through which the shaft passes; And Washer, characterized in that the inclination portion formed to be inclined in the direction of the tub through the through hole. The method of claim 8, Washing machine, characterized in that the bracket further comprises a cooling hole for dissipating heat generated from the bearing housing. The method of claim 9, The cooling hole is a washing machine, characterized in that formed between the coupling hole and the through hole. The method of claim 9, Washing machine, characterized in that the cooling hole is formed in the inclined portion. The method of claim 1, Washing machine, characterized in that the inner side of the bracket is formed to be supported by the rear end of the tub. The method of claim 12, Washing machine, characterized in that the inside of the bracket is in close contact with the outer peripheral surface of the rear end of the tub. The method of claim 1, Washing machine, characterized in that the inner side of the bracket is formed to be supported by the rear end of the bearing housing. The method of claim 14, The inner side of the bracket is in close contact with the outer peripheral surface of the rear end of the bearing housing. The method of claim 1, wherein the coupling portion, A fastening hole portion formed in the stator; And Washing machine comprising an auxiliary coupling portion formed in the bracket corresponding to the fastening hole. Tub; A bearing housing insert inserted into the tub to expose the fastening hole; A stator coupled to the fastening hole; A bracket for supporting the stator with the bearing housing; And Washing machine comprising a coupling unit for coupling the stator and the bracket. The method of claim 17, The fastening part is formed in the washing machine, characterized in that is installed to protrude from the rear wall of the tub. Shaping the bearing housing; Insert injection molding the tub into the bearing housing such that the fastening portion of the bearing housing is exposed to the outside while the bearing housing is supported by a jig; Coupling the stator to the bracket; Coupling the combined stator and bracket to the fastening unit; And Assembling the bracket, the stator, the fastening portion using a fastening member. The method of claim 19, wherein the insert injection molding the tub, Assembly method for a washing machine, characterized in that the fastening portion is molded to protrude to the outside. The method of claim 19, wherein the insert injection molding the tub, Assembly method of a washing machine characterized in that the insert injection molding using the jig to support the fastening portion. Shaping the bearing housing; Insert injection molding the tub into the bearing housing so that the fastening hole of the bearing housing is exposed to the outside while supporting the bearing housing using a jig; Coupling the stator to the bracket; Coupling the combined stator and bracket to the fastening unit; And Assembling the bracket, stator, fastening hole using a fastening member. The method of claim 22, wherein the insert injection molding the tub, Assembly method of the washing machine, characterized in that for forming the fastening portion is formed so as to protrude to the outside. The method of claim 22, wherein the insert injection molding the tub, Assembly method of a washing machine characterized in that the insert injection molding using the jig to support the portion formed with the fastening hole.

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