JP2000254391A - Mounting structure of substrate unit case of washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure of a substrate unit case of a washing machine, in which a control unit case with a built-in electric control substrate is easy to detach from an outer case when dismantling a washing machine, reusable materials can be securely separated, and processing of an electric substrate in another process can be also securely performed. SOLUTION: In this mounting structure of a unit case, a control unit case 8 with a built-in control substrate is fixed to an outer box 2 on machine side machine with screws 13 and hooks 10 as engaging pieces. In this case, a vertical part 10a is formed as a thin-wall part in the hook 10 of the engaging piece as a breakable fragile part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a mounting structure for a board unit case of a washing machine.

[0002]

2. Description of the Related Art A one-tank type fully automatic washing machine has a top cover provided with a lid 3 at an opening on an upper surface of an outer box 2 installed on a bottom frame 1 as an outer frame structure, for example, as shown in FIG. 4 and
A rear electrical component panel 5 is attached to a rear portion of the top cover 4 and a front electrical component panel 6 is attached to a front portion, and an open portion on the front surface of the outer box 2 is detachably covered with a front panel 7. In the figure, reference numeral 2a denotes a side edge protruding from the left and right sides of the front opening portion of the outer box 2 to the front opening portion side.

In a washing machine having such an outer frame structure,
As a configuration of the control device for controlling the operation of the washing machine, a low-voltage operation board is attached to the front electric component panel 6, and a 100V power supply voltage board to which a transformer, a capacitor, a heat sink, etc. are attached is separated from the low-voltage operation board. The control unit case 8 is attached to the side peripheral edge 2a of the outer box 2 so that maintenance and the like can be easily performed.

For example, this control unit case 8
Conventionally, as shown in FIG. 9, for example, the control unit case 8 is attached to the side peripheral edge 2a.
When it is attached to the upper right corner of the front opening of the control unit case 8, as shown in FIG.
The flange 8a is provided with a screw mounting portion 9 and a hook 20 as a locking piece.

[0005] For example, two screw mounting portions 9 are provided at two locations on the upper portion of the flange 8a, and one at each of the middle portion and the lower portion on the right side portion. The part 9 is formed by a cylindrical boss which becomes a screw hole protruding from the flange 8a to the rear side.

A hook 20 is provided at two places on the right side of the flange 8a between the screw mounting portions 9, and an L-shaped hook is provided so as to protrude forward of the flange 8a. It is.

On the other hand, a screw hole 21 is formed on the side peripheral edge 2a of the outer case 2 at a position corresponding to the screw mounting portion 9 and the hook 20 at an upper portion of a right corner portion, and on a right back side portion. A screw hole 21 and a vertically elongated hook hole 12 are formed in advance.

In order to fix the control unit case 8 to the side peripheral edge 2a of the outer box 2, the control unit case 8 is inserted into the front opening of the outer box 2 and the flange 8a is brought into contact with the back side of the side peripheral edge 2a. First, the hook 20 is inserted into the hook hole 12 formed in the side peripheral edge 2a, and the control unit case 8 is locked and temporarily fixed to the side peripheral edge 2a. In this state, the screw holes 21 match the screw mounting portions 9.

Next, the screw 13 is inserted into the screw hole 21 and the screw mounting portion 9.
Is inserted from the side of the side peripheral edge 2a, and the flange 8a is fixed to the back side of the side peripheral edge 2a by the screw 13. As a result, the control unit case 8 is fixed to the side peripheral edge 2 a and disposed at the front opening of the outer box 2.

In recent years, it has been desired to reuse materials for the purpose of reducing waste and effectively using materials. In such a washing machine as well, the materials of the washing machine to be discarded are recycled. It is thought that.

In order to reuse the materials, the washing machine is dismantled to some extent for each part, and parts containing valuables and harmful substances are separated and disassembled. It is crushed and classified for each material. By the way, a method of crushing the entire washing machine in a product state, selecting materials to be reused, and separating and separating the materials by type can be considered, but it is difficult with current technology, and crushing is performed. Manual disassembly is required before the process.

In the washing machine, the control unit case 8 is made of plastic, which is a recyclable material. However, in order to recycle the plastic material, it is necessary to separate the grade material to which the filler is added. is there. Since the control unit case 8 has a built-in power supply voltage board of 100 V, a flame-retardant material is used. At the time of disassembly, a standard grade plastic that constitutes other parts such as the top cover 4 is used. And must be separated so as not to mix.

In order to separate the control unit case 8 from the outer box 2, conventionally, all screws 13 fixing the flange 8a to the side peripheral edge 2a at a total of four locations are manually removed one by one. Then, hook 20 is inserted into hook hole 12
Removed from

[0014]

The task of manually removing four screws 13 one by one requires time and effort, and
The work of removing the hook 20 from the hook hole 12 is also a work of slanting the control unit case 8 behind the side peripheral edge 2a of the outer box 2 or sliding the control unit case 8 once in the vertical direction and then pulling out the horizontal direction. Is not good.

When the washing machine is disassembled, the electronic components and the electronic substrate containing lead must be processed in a separate process.
It is desired to be able to easily separate from the other parts, especially the outer box 2. However, if the workability of the separation and disassembly is not good as in the related art, not only the effectiveness of material reuse is not good, but also the effectiveness of another processing of the electronic substrate may be impaired.

An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and when the washing machine is disassembled, the control unit case containing the electronic control board can be easily separated from the outer box, and the reusable material can be separated without fail. It is another object of the present invention to provide a substrate unit case mounting structure for a washing machine that can surely process electronic substrates in another process.

[0017]

According to the present invention, there is provided a board unit case mounting structure for fixing a unit case containing a control board to a body with screws and locking pieces. When the unit case is separated from the fuselage by providing a breakable fragile portion on the stop piece, just remove the minimum necessary screws and leave the remaining screws as they are without removing the locking piece. If the unit case is broken by bending or the like, the unit case can be separated from the body without removing the locking pieces or removing the remaining screws. Therefore, it is possible to reduce the labor and time required to remove the screw during disassembly, improve the workability of disassembly, and make the reuse of parts effective.

Further, by making it possible to reliably separate the unit case, it is possible to reliably carry out the processing of an electronic component or a lead-containing electronic substrate contained in the unit case in another process.

Secondly, by reducing the number of mounting locations of screws with respect to that of the locking pieces,
It is also possible to separate the unit case from the aircraft simply by breaking the locking piece without removing the screws at all,
Further, dismantling workability is improved.

Third, the locking piece is a hook having an L-shaped side surface, and the vertical portion is formed as a weak portion, and the thin portion is formed in the lateral width direction. If this portion is cut using a cutting tool such as a nipper, the unit case can be easily and reliably separated from the machine simply by pulling the unit case straight forward. In addition, the part formed in the thin fragile part is a vertical part, and the force applied to the locking piece with the unit case fixed to the body is a vertical compressive force or a tensile force, so the vertical part is Even if it is formed, the locking strength of the locking piece does not decrease.

Fourth, the locking piece is a hook having an L-shaped side surface, and is formed as a fragile portion in a thin portion having a small width, so that the entire hook can be cut off using a cutting tool such as a nipper. By simply pulling the unit case straight forward, the unit case can be easily and reliably separated from the body. Even when the width in the horizontal direction (horizontal direction) is made thin, the force applied to the locking pieces while the unit case is fixed to the body is a vertical force, so the locking strength of the locking pieces decreases. I will not do it.

Fifthly, the locking piece is a hook having an L-shaped side surface, and a notch groove is provided as a fragile portion inside the bent corner so that a vertical portion of the hook uses a tool such as a nipper. When this is lifted, this vertical portion is bent at the location of the horizontal portion and the notch groove, and is easily separated because it is broken.

Sixth, in the unit case, a flange for mounting to the body is protruded on a side portion, a screw hole is formed in the flange, and a locking piece is protruded from the unit case. By forming a fragile portion on the flange located near the screw hole, the fragile portion formed on the flange by lifting the unit case after breaking at the fragile portion by bending the locking piece or the like. Breaks.
Therefore, the unit case can be separated from the body such as the outer box without removing the screws.

[0024]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an exploded perspective view showing an embodiment of a substrate unit case mounting structure of a washing machine according to the present invention. Since the entire structure of the washing machine is as described above with reference to FIG. 9, detailed description thereof will be omitted. A washing machine in which the board unit case mounting structure of the present invention is implemented is provided with a top cover 4 having a lid 3 at an opening on the upper surface of an outer box 2 installed on a bottom frame 1 in the same manner as in the prior art. 4, a rear electrical component panel 5 is attached to the rear part, and a front electrical component panel 6 is attached to the front part. The front opening of the outer box 2 is detachably covered with a front panel 7. In the figure, reference numeral 2a denotes a side edge protruding from the left and right sides of the front opening portion of the outer box 2 to the front opening portion side.

In the washing machine having such an outer frame structure,
As a configuration of the control device for controlling the operation of the washing machine, a low-voltage operation board is attached to the front electric component panel 6, and a 100V power supply voltage board to which a transformer, a capacitor, a heat sink, etc. are attached is separated from the low-voltage operation board. The control unit case 8 is attached to the side peripheral edge 2a of the outer box 2 so that maintenance and the like can be easily performed.

The control unit case 8 containing the power supply voltage board is connected to the side peripheral edge 2a of the outer case 2, which is the body side.
As shown in FIG. 9, when the control unit case 8 is mounted at the upper right corner of the front opening of the outer box 2 as shown in FIG. A flange 8a is projected from the front L-shape, and a screw mounting portion 9 is attached to the flange 8a.
And a hook 10 as a locking piece.

The screw mounting portions 9 are provided at, for example, two places on an upper portion of the flange 8a so as to correspond to a vertical compressive force and a tensile force applied to the control unit case 8, and the screw mounting portions 9 are provided on the flange 8a. It is formed by a cylindrical boss which becomes a screw hole protruding from 8 to the back side. Hook 1
Numerals 0 are provided at, for example, three places on the right side of the flange 8a. In this case, the number of attachment points by the hooks 10 is greater than the number of attachment points by screwing, and the number of attachment points by screws is limited to the minimum necessary for securing the attachment strength.

On the other hand, a screw hole 11 is formed on the side peripheral edge 2a of the outer box 2 at a position corresponding to the screw mounting portion 9 and the hook 10 at an upper position of a right corner portion. A vertically long hook hole 12 is formed.

In the mounting structure using such screws and hooks, in the present invention, a breakable fragile portion is provided on the hook 10 which is a locking piece. FIG. 3 shows a first embodiment of the hook 10. The hook 10 is a hook having an L-shaped side surface, and the vertical portion 10a, which is a hook portion, is formed as a weak portion, and a thin portion is formed in the width direction.

Further, as shown in FIG. 7, a V-shaped groove 14 is provided below the vicinity of the screw mounting portion 9 provided on the flange 8a as a fragile portion which can be broken on the rear surface side of the flange 8a.
Are provided in the lateral direction.

To fix the control unit case 8 to the side peripheral edge 2a of the outer box 2, the control unit case 8 is inserted into the front opening of the outer box 2 and the flange 8a is brought into contact with the back side of the side peripheral edge 2a. First, the hook 10 is inserted into a hook hole 12 formed in the side peripheral edge 2a, and the control unit case 8 is locked and temporarily fixed to the side peripheral edge 2a. In this state, the screw holes 11 match the screw mounting portions 9.

Next, the screw 13 is inserted into the screw hole 11 and the screw mounting portion 9.
Is inserted from the side of the side peripheral edge 2a, and the flange 8a is fixed to the back side of the side peripheral edge 2a by the screw 13. Thereby, as shown in FIG. 2, the control unit case 8 is fixed to the side peripheral edge 2a and disposed in the front opening portion of the outer box 2. In this state, the force applied to the control unit case 8 during normal operation or physical distribution is a vertical compressive force or a tensile force. Therefore, the upper portion of the flange 8a is screwed against these forces, Further, even if the hook 10 has a fragile portion, the fragile portion is formed by thinning the vertical portion 10a as described above, and therefore has strength against compression and tension.

In order to separate the control unit case 8 from the outer box 2 when the washing machine is disassembled, the screws 13 attached to the screw attaching portions 9 are left as they are, and first,
A vertical portion 10a, which is a hook portion of the hook 10 protruding forward of the side peripheral edge 2a through the hook hole 12, is cut off using a cutting tool such as a nipper.

The vertical portion 10a is a fragile portion formed in a thin portion and has no strength against bending, so that it can be easily broken. After breaking the vertical portions 10a, which are the fragile portions of all the hooks 10, in this manner, the control unit case 8 is lifted forward with respect to the outer box 2 as shown in FIG. The flange 8a is bent at the position of the V-shaped groove 14 as a thin fragile portion formed at a position below the flange 8a, and the flange 8a is broken at this position. Thereby, the control unit case 8
Can be separated from the outer box 2. In this state, the screws 13
Remains on the side of.

As described above, the control unit case 8 is not removed from the outer case 2 without removing the screw 13.
Can be separated from

FIG. 4 shows a second embodiment of the hook 10,
The hook 10 is a hook having an L-shaped side surface, and is formed as a fragile portion in a thin portion 10b having a narrow width as a whole. As a result, if the control unit case 8 is separated from the outer box 2 by using a cutting tool such as a nipper 15 to grip and bend an arbitrary portion of the hook 10, the hook 10 is damaged.

FIG. 5 shows a third embodiment of the hook 10,
The hook 10 is a hook having an L-shaped side surface as in the first and second embodiments, but a V-shaped notch 10c is provided in the lateral direction as a weak portion inside a bent corner. Thus, when the control unit case 8 is separated from the outer box 2 by using a cutting tool such as a nipper 15 to tear the vertical portion of the hook 10 forward, the V-shaped notch groove 10c can be formed. The vertical part is cut off from the part,
The hook 10 breaks.

[0038]

As described above, the board unit case mounting structure of the washing machine according to the present invention is, firstly, a board unit case mounting for fixing the unit case containing the control board to the body with screws and locking pieces. In the structure, when the unit case is separated from the body by providing a breakable fragile part on the locking piece, simply remove the minimum necessary screws and do not remove the remaining screws If the unit is broken by bending or the like at the position of the locking piece, the unit case can be separated from the body without removing the locking piece or removing the remaining screws. Therefore, it is possible to reduce the labor and time required to remove the screw at the time of dismantling, and not only the workability of dismantling is improved, but also it is easy to divide the parts according to the material, and the reuse of parts can be made effective. .

In addition, since the unit case can be reliably separated, the electronic component or the electronic board containing lead incorporated in the unit case can be processed in another process without fail.

Secondly, by reducing the number of mounting locations of screws with respect to mounting locations of locking pieces,
It is also possible to separate the unit case from the aircraft simply by breaking the locking piece without removing the screws at all,
Further, dismantling workability is improved.

Third, the locking piece is a hook having an L-shaped side surface, and a vertical portion is formed as a weak portion, and a thin portion is formed in a lateral width direction. If this portion is cut using a cutting tool such as a nipper, the unit case can be easily and reliably separated from the machine simply by pulling the unit case straight forward. The portion formed in the thin-walled fragile portion is a vertical portion, and the force applied to the locking piece when the unit case is fixed to the body is a vertical compressive force or a tensile force. Even if it is formed, the locking strength of the locking piece does not decrease.

Fourthly, since the locking piece is a hook having an L-shaped side surface and formed as a fragile portion in a thin portion having a small width, a cutting tool such as a nipper can be used for an arbitrary portion of the entire hook. By simply pulling the unit case straight forward, the unit case can be easily and reliably separated from the body. Even when the width in the horizontal direction (horizontal direction) is made thin, the force applied to the locking pieces while the unit case is fixed to the body is a vertical force, so the locking strength of the locking pieces decreases. I will not do it.

Fifth, the engaging piece is a hook having an L-shaped side surface, and a notch groove is provided as a fragile portion inside the bent corner so that a vertical portion of the hook can use a tool such as a nipper. When this is lifted, this vertical portion is bent at the location of the horizontal portion and the notch groove, and is easily separated because it is broken.

Sixth, in the unit case, a flange for attaching to the body is protruded on a side portion, a screw hole is formed in the flange, and a locking piece is protruded from the flange. By forming a fragile portion on the flange located near the screw hole, the fragile portion formed on the flange by lifting the unit case after breaking at the fragile portion by bending the locking piece or the like. Breaks.
Therefore, the unit case can be separated from the body such as the outer box without removing the screws.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a substrate unit case mounting structure of a washing machine of the present invention.

FIG. 2 is a perspective view of a substrate unit case mounting structure of the washing machine of the present invention.

FIG. 3 is a perspective view showing a first embodiment of a hook which is a main part of the substrate unit case mounting structure of the washing machine of the present invention.

FIG. 4 is a perspective view showing a second embodiment of a hook which is a main part of the substrate unit case mounting structure of the washing machine of the present invention.

FIG. 5 is a perspective view showing a third embodiment of a hook which is a main part of the substrate unit case mounting structure of the washing machine of the present invention.

FIG. 6 is a cutaway side view showing a third embodiment of a hook which is a main part of the substrate unit case mounting structure of the washing machine of the present invention.

FIG. 7 is a longitudinal sectional side view of a flange portion, which is a main part of the substrate unit case mounting structure of the washing machine of the present invention.

FIG. 8 is a longitudinal sectional side view of a fractured state of a flange portion, which is a main part of the substrate unit case mounting structure of the washing machine of the present invention.

FIG. 9 is a perspective view of the washing machine.

FIG. 10 is an exploded perspective view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... bottom frame, 2 ... outer box, 2a ... side edge, 3 ... lid, 4 ... top cover,
5 Rear electrical component panel, 6 Front electrical component panel,
7 front panel, 8 control unit case, 8a flange, 9 screw mounting part, 10
Hook, 10a: vertical part, 10b: thin part,
10c: Notch groove, 11: Screw hole, 12: Hook hole, 13: Screw, 14: Groove, 15: Nipper, 20: Hook, 21: Screw hole

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Masanobu Yatsu 1-1-1, Yamate, Funabashi-shi, Chiba Japan Nippon Steel Corporation (72) Inventor Yuichi Hasebe 1-1-1, Yamate, Funabashi-shi, Chiba Japan (72) Inventor Junji Miyoshi 1-1-1 Yamate, Funabashi-shi, Chiba Japan Incorporated Steel Corporation (72) Inventor Kunio Inose 1-1-1, Yamate, Funabashi-shi, Chiba Nihon-ken Incorporated (72) Inventor Takeshi Sugino 1-1-1 Yamate, Funabashi-shi, Chiba F-term (reference) 3B155 AA10 BB04 BB16 CB32 DA03 JA02 JA03 MA01 MA02

Claims (6)

[Claims] 1. A washing machine in which a board unit case mounting structure for fixing a unit case containing a control board to a machine body with screws and locking pieces is provided with a breakable fragile portion on the locking pieces. PCB unit case mounting structure. 2. The board unit case mounting structure for a washing machine according to claim 1, wherein the number of mounting locations by screws is smaller than the mounting location by locking pieces. 3. The washing machine according to claim 1, wherein the locking piece is a hook having an L-shaped side surface, and a vertical portion is formed as a weak portion and a thin portion is formed in a width direction. PCB unit case mounting structure. 4. The washing machine according to claim 1, wherein the locking piece is a hook having an L-shaped side surface, and is formed as a weak portion having a narrow width. Board unit case mounting structure. 5. The washing device according to claim 1, wherein the locking piece is a hook having an L-shaped side surface, and a notch groove is provided as a weak portion inside the bent corner. Board unit case mounting structure of the machine. 6. The unit case according to claim 1, wherein a flange for attaching to the body is protruded on a side portion, a screw hole is formed in the flange, and a locking piece is protruded from the flange. The mounting structure for a board unit of a washing machine according to any one of claims 1 to 5, wherein a fragile portion that can be broken is formed on the flange so as to be positioned near the flange.