JPH08196783A - Washing machine - Google Patents

Abstract

PURPOSE: To obtain sufficient reliability in the sealing performance for the structure of attaching a liquid crystal display or the related parts. CONSTITUTION: An electronic unit 22 is composed of a circuit board 11 for operation control, case 6 for storing this circuit board 11, liquid crystal display(LCD) 13 laminated on the outer surface of the bottom of this case 6, and cover 19 fixed on the case 6 so as to cover the LCD 13. The electronic unit 22 is pressed against a cosmetic panel 4, which holds the outer circumference of the cover 19 together with the case 6. In addition, the front face of the cosmetic panel 4 is provided with the LCD 13; the cover 19 is fixed on the cosmetic panel 4 so as to cover the LCD 13; and the circuit board 11 for operation control is stored inside an enclosure that is formed inward in the cosmetic panel 4. In these instances, the cover 19 may be integrally molded with the case 6 or the cosmetic panel 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine having a liquid crystal display panel.

[0002]

2. Description of the Related Art In recent years, as a washing machine, a liquid crystal display panel is used for displaying an operation display. In this case, the liquid crystal display panel is attached to the decorative panel with a sealing structure that only seals the peripheral edge of itself, and is covered with a cover, and the operation control is performed via the connection line and the connector provided at the end of this. Was connected to the circuit board for.

[0003]

In the case of the above-mentioned conventional ones, waterproofing of the liquid crystal display panel relies on a sealing structure in which the peripheral portion of the liquid crystal display panel itself is simply sealed, and is not sufficiently reliable. There wasn't. In particular, the connection line connecting the liquid crystal display panel and the circuit board for operation control is routed outside the case containing the circuit board, and it is difficult to seal the connection line.

The present invention has been made in view of the above-mentioned circumstances, and therefore an object thereof is to achieve sufficient reliability in the sealing performance of a liquid crystal display panel and a mounting structure for components related thereto. To provide the machine.

[0005]

In order to achieve the above object, in a washing machine of the present invention, first, a circuit board for operation control, a case accommodating the circuit board, and a bottom portion of the case are provided. An electronic unit is composed of a liquid crystal display panel laminated on the outer surface of the and a cover fixed to the case covering the liquid crystal display panel, and the electronic unit is pressed against the decorative panel, and the decorative panel and the case. The outer peripheral portion of the cover is sandwiched between and.

In this case, the liquid crystal display panel and the circuit board are connected to each other by a connecting wire that passes through an opening formed in the bottom of the case, and the connecting wire is sealed by a moisture-proof material that extends from the inside of the case to the opening. And good.

Further, in the case where the liquid crystal display panel also has a switch, a metal plate may be laid between the metal plate and the bottom of the case, and a first circuit board may be provided between the metal plate and the bottom of the case. It is also possible to position the mounted component of (1) in the opening formed in the bottom of the case and store the second circuit board in the case.

Further, the switch is a membrane switch,
The liquid crystal display panel may have the layers stacked, and the first circuit board may be placed inside the opening at the bottom of the case with the first circuit board turned upside down.
It is also good to match the flat back surface to the metal plate.

Secondly, in the washing machine of the present invention, a decorative panel, a liquid crystal display panel provided on the surface of the decorative panel, a cover which covers the liquid crystal display panel and is fixed to the decorative panel, and a makeup panel. It is characterized by comprising an enclosure formed in the inner part of the panel and a circuit board for operation control accommodated inside the enclosure.

In these cases, the cover is preferably integrated with the case or the decorative panel in the mold together with the molding of the case or the decorative panel.

[0011]

According to the first means, the cover covering the liquid crystal display panel is fixed to the case, and the outer peripheral portion of the cover is sandwiched between the opening edge of the decorative panel and the case. It is possible to more reliably prevent water from entering the board and the circuit board portion.

In this case, in particular, the liquid crystal display panel and the circuit board are connected to each other by a connecting wire that passes through an opening formed in the bottom of the case, and the connecting wire is connected by a moisture-proof material that extends from the inside of the case to the opening. In the case of encapsulating, the connection line can be surely waterproofed, and moreover, it can be done by using the moisture-proof material for moisture-proofing the circuit board in the case.

Further, in that case, in the case where the liquid crystal display panel also has a switch and a metal plate is laid between the liquid crystal display panel and the bottom of the case on the back side, the operation pressure for the switch is received by the metal plate and the operation is performed. You can be certain.

Further, a first circuit board is provided between the metal plate and the bottom of the case, and the mounting component of the first circuit board is positioned in the opening formed in the bottom of the case, and the second circuit board is placed in the case. In the packaged case, two circuit boards can be arranged in one case, and one of the cases can be eliminated.

In addition, in the switch in which the switch is a membrane switch and the liquid crystal display panel has the same and the first circuit board is turned upside down and the mounting component is located in the opening at the bottom of the case, The mounted component of the circuit board can be positioned in the opening at the bottom of the case simply by inverting the first circuit board, and the back surface of the first circuit board can assist in receiving the switch operating pressure.

Also, in the case where the first circuit board is surface-mounted with the mounting components and the flat back surface is matched with the metal plate, the flat operation of the flat back surface of the first circuit board is more reliable for receiving the switch operating pressure. can do.

On the other hand, according to the second means, it is possible to directly dispose the liquid crystal display panel and the circuit board on the decorative panel, which can reduce one of the cases and to join the case to the decorative panel. Even if the seam is not formed, it is possible to eliminate water from the seam to the liquid crystal display panel and the circuit board portion.

When the cover is integrated with the case or the decorative panel in the mold together with the molding of the case or the decorative panel, the adhesion between the cover and the case or the decorative panel and the durability against peeling. Of the liquid crystal display panel and the circuit board portion can be reduced from the joint.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First, FIG. 1 shows an outer box 1 of a washing machine. A top cover 3 having a laundry entrance / exit 2 is mounted on the uppermost part of the outer box 1, and a decorative panel 4 is mounted on the front part of the top cover 3. The decorative panel 4 has a rectangular opening 5 shown in FIG.

On the other hand, the case 6 is a rectangular box that is slightly smaller than the opening 5 of the decorative panel 4, and has a flange 7 larger than the opening 5 of the decorative panel 4 on the outer periphery of the intermediate portion near the upper part. Therefore, the opening 9 is formed in the peripheral portion of the bottom portion (upper surface portion in the state of being turned upside down), leaving a plurality of connecting ribs 8. A plurality of receiving portions 10 shown in FIG. 1 are formed on the inner peripheral portion of the case 6. On the other hand, the circuit board 11 is for operation control, and necessary electronic components 12 are mounted on both front and back surfaces thereof.

Although not shown in detail, the liquid crystal display panel 13 mainly includes, for example, an NCAP (nematic curvilinear aligned phase) liquid crystal panel 14, and a reflector 14a.
And a switch, especially a planar membrane switch 15
Are laminated and adhered. FIG. 3 specifically shows the liquid crystal display panel 13, which has a plurality of display parts 16 such as characters and figures, and each unit switch of the membrane switch 15 is on the back side of the display part 16 which also serves as an operation part. It corresponds to 15a. Also, this liquid crystal display panel 13
From, an FPC (flat package cable) 17 as a connecting line is led out.

The metal plate 18 is formed of, for example, a stainless steel plate or a zinc steel plate into a rectangular shape having the same size as the liquid crystal display panel 13, and the cover 19 is made of, for example, polyethylene terephthalate or polycarbonate, and the flange portion 7 of the case 6 is formed. It is formed in the same shape as the upper part from the upper surface, and therefore has the same brim portion 20 as the brim portion 7.

With this structure, as shown in FIG.
The circuit board 11 is housed inside, and is mounted and fixed on the receiving portion 10. Further, a metal plate 18 is laminated and fixed on the bottom of the case 6, and a liquid crystal display panel 13 is further laminated and fixed on the metal plate 18, and the FPC 17 is passed through the opening 9 of the case 6 and its tip is fixed. The connection terminal portion of the circuit board 11 is applied by heat welding to be connected. Then, by covering the liquid crystal display panel 13 from the liquid crystal display panel 13 to the flange portion 7 of the case 6, the liquid crystal display panel 13 is covered and the outer peripheral portion thereof is adhesively fixed to the outer peripheral portion of the case 6. Then, a moistureproof material 21 made of urethane resin, for example, is injected into the case 6, the circuit board 11 is sealed by the moistureproof material 21, and a part of the circuit board 11 is spread over the opening 9 of the case 6 to seal the FPC 17. ing.

Thus, the electronic unit 22 is formed, and the electronic unit 22 is press-fitted into the opening 5 of the decorative panel 4 from below with the cover 19 facing forward, whereby the outer peripheral portion of the case 6 is opened. 5, the electronic unit 22 is fixed to the decorative panel 4 and the outer peripheral portion of the cover 19 is sandwiched between the peripheral edge of the opening 5 of the decorative panel 4 and the case 6.

The circuit board 11 is the first circuit board, the mounted electronic parts 12 are DC specification parts for the liquid crystal display panel 13, and in addition to this, AC specification electronic parts such as a transformer. There is a second circuit board 24 on which 23 is mounted, which is housed in a case 25 different from the case 6 and enclosed by a moistureproof material 26, and the decorative panel 4 of the top cover 3 is attached together with the case 25. It is housed and fixed inside the portion (recess 27).

According to the above construction, the cover 19 covering the liquid crystal display panel 13 is fixed to the case 6, and the cover 1
Due to the structure in which the outer peripheral portion of 9 is sandwiched between the peripheral edge of the opening 5 of the decorative panel 4 and the case 6, the liquid crystal display panel 13 and the circuit board 11 are more reliably prevented from being flooded. A reliable seal can be obtained and sufficient reliability can be obtained as compared with the case where only the peripheral portion of the liquid crystal display panel itself is sealed.

Further, particularly in the case of the above structure, the liquid crystal display panel 13 and the circuit board 11 are connected by the FPC 17 (connection line) passing through the opening 9 of the case 6, and the opening is opened from inside the case 6. F due to the moisture-proof material 21 that has spread to 9
By containing PC17, its FPC17
Can be surely waterproofed, and moreover, it can be done by using the moisture-proof material 21 for moisture-proofing the circuit board 11 in the case 6.

Further, in that case, since the liquid crystal display panel 13 also has a membrane switch 15 (switch) and the metal plate 18 is laid between the liquid crystal display panel 13 and the bottom of the case 6 on the back side thereof, the operating pressure on the membrane switch 15 is increased. Can be received by the metal plate 18 to ensure its operation.

In contrast to the above, FIGS. 4 and 5 show the second embodiment of the present invention, in which the first circuit board 28 is provided between the metal plate 18 and the bottom of the case 6, and the surface thereof is provided. The electronic component 29 mounted only on the surface 28a by surface mounting is positioned inside the opening 30 further formed at the bottom of the case 6 by arranging the first circuit board 28 inside out.
The one in which the second circuit board 31 is housed is shown, and by doing so, two circuit boards 28 and 31 can be arranged in one case 6, and one case 25 is eliminated. be able to.

Further, in this case, with respect to the liquid crystal display panel 13 having the membrane switch 15 laminated thereon, the first circuit board 28 is turned upside down so that the mounting component 29 is positioned in the opening 30 at the bottom of the case 6. Therefore, the mounting component 29 of the first circuit board 28 can be positioned in the opening 30 by only arranging the first circuit board 28 inside out, and at the same time, the back surface of the mounting component 29 with respect to the membrane switch 15 can be removed. It can even assist in receiving operating pressure.

Further, in the case of this, the first circuit board 2
Since the mounting component 12 is surface-mounted and the flat back surface 28b thereof is aligned with the metal plate 18, the operation pressure to the membrane switch 15 is more reliably received by the flat back surface of the first circuit board 28. Can be assisted.

6 and 7 show a third embodiment of the present invention, in which the liquid crystal display panel 13 and the cover 19 are mounted on the surface of the makeup panel 4 and the makeup is applied to the inner portion of the makeup panel 4. The first circuit board 11 is housed and fixed inside the enclosure 32 formed by the ribs integrated with the panel 4, and by doing so, the decorative panel 4 is provided with the liquid crystal display panel 13 and the circuit board 11. Can be disposed directly, the number of cases 6 can be reduced, and even a joint by joining the case 6 to the decorative panel 4 does not occur. Therefore, from the joint, the liquid crystal display panel 13 and First
It is also possible to prevent water from entering the circuit board 11 portion.

FIG. 8 and FIG. 9 show a fourth embodiment of the present invention, in which the cover 33 is integrated with the case 34 in the molding die together with the molding of the case 34, and in this state, the case 34 is formed. The outer peripheral portion of the decorative panel 35 is pressed against the peripheral edge (the upper edge in the illustrated embodiment) of the opening 36 of the decorative panel 35.
The outer peripheral portion of the cover 33 is sandwiched between the peripheral edge of the opening 36 and the case 34, and by doing so, the adhesion between the cover 33 and the case 34 and the durability against peeling are improved. Therefore, it is possible to reduce water infiltration from the joint to the liquid crystal display panel 13 and the first circuit board 11 portion.

FIGS. 10 and 11 show a fifth embodiment of the present invention, in which the cover 37 is integrated with the decorative panel 38 in the mold together with the molding of the decorative panel 38. 1 shows that the first circuit board 11 is housed and fixed inside an enclosure 39 formed by a rib integral with the decorative panel 38 at the inner side of the cover 33 and the decorative panel 38. Since it is possible to improve the adhesiveness and durability against peeling, it is possible to reduce water immersion from the joint to the liquid crystal display panel 13 and the first circuit board 11 portion.

12 and 13 show the cover 3
3 shows the method of integrating the case 34 and the decorative panel 38 with each of the cases 37 and 37. First, the supplementary printing / binder layer 41 with the cover 33 or the cover 37 attached to the respective back surfaces is formed inside the one mold 40. And then set, then
The other molding die 42 having the nest 42a is combined, the molding material 44 of the case 34 or the decorative panel 38 is injected into the molding cavity 43, and the heat of the molding material 44 melts the binder of the printing / binder layer 41. To mix with the molding material 44 and to solidify them, the cover 3
The case 34 in which the three are integrated, or the decorative panel 38 in which the cover 37 is integrated are obtained.

[0036]

The washing machine of the present invention is as described above, and has the following effects. First, a circuit board for operation control, a case accommodating the circuit board, a liquid crystal display panel stacked on the outer surface of the bottom of the case, and a liquid crystal display panel covering the liquid crystal display panel and fixed to the case. By forming an electronic unit with the cover, pressing the electronic unit against the decorative panel, and sandwiching the outer peripheral portion of the cover with the decorative panel and the case, it is possible to prevent water from entering the liquid crystal display panel and the circuit board portion. It can be surely prevented, and the reliability of the sealing performance can be sufficiently obtained.

Secondly, the liquid crystal display panel and the circuit board are connected to each other by a connecting wire that passes through an opening formed in the bottom of the case, and the connecting wire is connected by a moisture-proof material that extends from the inside of the case to the opening. By enclosing it, the connection line can be surely waterproofed, and moreover, it can be done by using the moisture-proof material for moisture-proofing the circuit board in the case.

Thirdly, since the liquid crystal display panel also has a switch and a metal plate is laid between the liquid crystal display panel and the bottom of the case on the back side, the operation pressure for the switch can be received by the metal plate. The operation can be confirmed.

Fourthly, the first circuit board is provided between the metal plate and the bottom of the case, and the mounting component of the first circuit board is positioned in the opening formed in the bottom of the case, and the second circuit is provided in the case. By housing the boards, two circuit boards can be arranged in one case, and one case can be eliminated.

Fifthly, since the switch is a membrane switch, the liquid crystal display panel has the same and the first circuit board is turned upside down, and the mounting component is positioned in the opening at the bottom of the case. The mounting component of the first circuit board can be positioned in the opening at the bottom of the case only by inverting the first circuit board, and the back surface of the first circuit board assists in receiving the operating pressure to the membrane switch. You can even do it.

Sixth, the first circuit board surface-mounts the mounting components, and the flat back surface is aligned with the metal plate, so that the operation pressure for the membrane switch is received by the flat surface of the first circuit board. You can certainly help on the back side.

Seventh, a decorative panel, a liquid crystal display panel provided on the surface of the decorative panel, a cover fixed to the decorative panel to cover the liquid crystal display panel, and an inner portion of the decorative panel. By including the enclosure part and the circuit board for operation control housed inside the enclosure part, the liquid crystal display panel and the circuit board can be directly arranged on the decorative panel,
It is possible to reduce one of the cases, and it is not possible to even form a joint by joining the case to the decorative panel, and it is possible to eliminate water from the joint to the liquid crystal display panel and the circuit board portion.

Eighth, the cover is integrated with the case or the decorative panel in the mold together with the molding of the case or the decorative panel, so that the cover and the case or the decorative panel are adhered and separated. The durability of the liquid crystal display panel and the circuit board portion can be reduced from the joint.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a main portion showing a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of main parts

FIG. 3 is a plan view of a single liquid crystal display panel.

FIG. 4 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.

FIG. 5 is a view corresponding to FIG.

FIG. 6 is a view corresponding to FIG. 1 showing a third embodiment of the present invention.

FIG. 7 is a view corresponding to FIG.

FIG. 8 is a view corresponding to FIG. 1 showing a fourth embodiment of the present invention.

FIG. 9 is a view corresponding to FIG.

FIG. 10 is a view corresponding to FIG. 1 showing a fifth embodiment of the present invention.

FIG. 11 is a view corresponding to FIG.

FIG. 12 is a vertical cross-sectional view of the cover-integrated molding apparatus before molding.

FIG. 13 is a vertical cross-sectional view of the same apparatus during molding.

[Explanation of symbols]

4 is a decorative panel, 5 is an opening, 6 is a case, 9 is an opening, 11 is a circuit board (first circuit board), 12 is an electronic component (mounting component), 13 is a liquid crystal display panel, and 14 is a liquid crystal panel. , 15 is a membrane switch (switch), 17 is F
PC (connection line), 18 is a metal plate, 19 is a cover, 21 is a moisture-proof material, 22 is an electronic unit, 28 is a first circuit board,
28b is the back surface of the first circuit board, 29 is an electronic component (mounting component), 30 is an opening, 31 is a second circuit board, 32 is an enclosure, 33 is a cover, 34 is a case, 37 is a cover,
38 is a decorative panel, 39 is an enclosure.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Imai 991, Anada Town, Seto City, Aichi Prefecture Toshiba Aichi Plant (72) Inventor Toru Imai 991, Aida Prefecture, Seta City, Aichi Prefecture Toshiba Aichi Plant, Inc. (72) Inventor Nobuichi Nishimura 991, Anada-cho, Seto-shi, Aichi Prefecture Toshiba Aichi factory

Claims (8)

[Claims] 1. A circuit board for operation control, a case accommodating the circuit board, a liquid crystal display panel laminated on the outer surface of the bottom of the case, and a liquid crystal display panel covering the liquid crystal display panel and fixed to the case. A washing machine characterized in that an electronic unit is constituted by the cover and the electronic unit is pressed against a decorative panel, and the outer peripheral portion of the cover is sandwiched between the decorative panel and the case. 2. The liquid crystal display panel and the circuit board are connected to each other by a connecting wire that passes through an opening formed in the bottom of the case, and the connecting wire is sealed by a moisture-proof material that extends from the inside of the case to the opening. The washing machine according to claim 1, wherein: 3. The washing machine according to claim 1, wherein the liquid crystal display panel also has a switch, and a metal plate is laid between the liquid crystal display panel and the case bottom portion on the back side thereof. 4. A first circuit board is provided between the metal plate and the bottom of the case, mounting components of the first circuit board are positioned in an opening formed in the bottom of the case, and the second circuit board is housed in the case. The washing machine according to claim 3, wherein the washing machine is used. 5. The switch is a membrane switch, which is laminated on a liquid crystal display panel, and the first circuit board is turned upside down so that the mounting component is positioned inside the opening at the bottom of the case. Item 4. The washing machine according to item 4. 6. The first circuit board surface-mounts mounting components,
The washing machine according to claim 5, wherein the flat back surface is fitted to the metal plate. 7. A decorative panel, a liquid crystal display panel provided on a surface portion of the decorative panel, a cover fixed to the decorative panel to cover the liquid crystal display panel, and an enclosure formed inside the decorative panel. And a circuit board for operation control, which is housed inside the enclosure portion. 8. The washing machine according to claim 1, wherein the cover is integrated with the case or the decorative panel in the mold together with the molding of the case or the decorative panel.