JP5024261B2 - Washing machine - Google Patents

Description

  The present invention relates to the safety of a washing machine in which a control device is arranged inside an upper frame of a washing machine body.

  Conventionally, this type of washing machine has a cover of a flame-retardant or non-flammable resin member in a part where a high current flows in an electrical component mounted on a control board arranged inside the upper frame of the washing machine body. It is made to cover (for example, refer patent document 1).

  FIG. 6 shows an exploded perspective view of a main part of an upper frame body and a control device of a conventional washing machine described in Patent Document 1. As shown in FIG.

  As shown in FIG. 6, in the upper part of the washing machine body (not shown), PP resin (polypropylene) and ABS resin (acrylonitrile, butadiene, styrene) excellent in processability are used in order to improve productivity and design. An upper frame 38 made of a thermoplastic resin molded member such as is placed.

  A button cover is printed on the front of the upper frame 38, and an operation cover 39 with an adhesive applied to the back is attached. The switch 34 and the display member 33 are placed inside the upper frame 38. And a control board 31 connected to the display board 35 by signal lead wires 32.

  The display board 35 is mounted with a display member 33 such as an LED that operates at a low current and a switch 34, while the control board 31 has a connector 41a, a relay 42a, and a triac 42b through which a high current (for example, 3 amps or more) flows. Electrical components such as are mounted.

  The control board 31 and the display board 35 are housed inside the first boat-like case 36 and the second boat-like case 37 whose one side (upper frame 38 side) is open, and are urethane resin or the like for moisture prevention. A moisture-proof potting material (not shown) is filled. The first boat-like case 36 and the second boat-like case 37 may be integrated depending on the design or the like.

  An operation panel member 56 having an operation button 44 that transmits an operation to the switch 34 when the operation cover 39 is pressed is disposed on the upper surface (upper frame 38 side) of the display substrate 35.

  On the other hand, on the upper surface (upper frame 38 side) of the control board 31 through which a high current flows, a cover body 43 made of a flame-retardant or non-flammable material is covered with the first boat shape so as to cover the control board 31. Fix to case 36.

As described above, the configuration of the conventional control apparatus performs moisture-proofing of the control board 31 and the display board 35, and the control board 31 that operates at a high current has difficulty in the upper frame body 38 side that is a combustible body. The cover body 43 made of a flammable or nonflammable material has been arranged to prevent a fire accident from a high current portion from burning into the upper frame body 38 that is a combustible body.
JP 2008-67901 A

  However, in the above-described conventional configuration, the control board 31 is covered with the cover body 43 made of a flame retardant material. However, when some trouble occurs in the control board 31 and heat is generated, the cover body 43 or If a gap or the like is generated due to thermal deformation in the first boat-like case 36 that is a substrate storage part, ignition increases due to inhalation of air, and a serious unsafe accident in which flame is transmitted from the gap to a flammable member There was a problem of becoming.

  In particular, the structure of such resin members is often used in common to increase productivity between products with different products or with different voltage specifications, and has not been able to cope with the unexpected ignition phenomenon of products with high voltage specifications. .

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object of the present invention is to prevent expansion damage even if an ignition phenomenon occurs in a control device (control board).

In order to solve the above-described conventional problems, the washing machine of the present invention is arranged in the upper part of the washing machine main body and the upper frame body having the clothes insertion port in the substantially central part, and the front frame inside the upper frame body. An operation board on which switches for operation and LEDs are mounted, a control board on which a control component through which a high current flows for controlling the washing machine is mounted, and a button portion disposed between the operation board and the upper frame body are provided. An operation panel, a lead wire for connecting the operation board and the control board, an operation board storage part for storing the operation board, and a control board storage part for storing the control board ; with a moisture-proof potting material in a state in which the operation board accommodating the control board filled with resin inside the substrate storage unit, and a control board cover configured to cover the control board on the upper surface of the control board, the Control board Chromatography utilizes a fitting portion between the substrate accommodating portion in side has a waterproof structure, provided the lower face plate cover made of metal steel plate below the control board portion of the substrate receiving portion, the control board provided with a top plate cover made of metal steel plate in the top of the cover, the lead wire, the operation board housing portion and the control board housing unit and the wiring to pass within the groove that connects the rib to the groove on both sides It is formed and provided with a flange that covers the groove and the rib .

Thus, a high current flows member that might ignite to concentrate on the control board, the heat generation in the control board, and also prevents the cover fire in metallic steel sheet metal cover if there is a fire, the product Safety can be improved.

  The washing machine of the present invention can improve safety by completely preventing burning to other members in the event of a fire accident from the control board.

The first invention is an operation for mounting an upper frame mounted on the upper part of the washing machine main body and having a clothing insertion port in a substantially central part, and an operation switch and LED disposed in front of the upper frame. A control board on which a high-current control component for controlling the washing machine is mounted, an operation panel having a button portion disposed between the operation board and the upper frame, the operation board, and the control In a state in which the operation board and the control board are stored , a lead wire for connecting the board , an operation board storage part for storing the operation board, and a control board storage part for storing the control board. A moisture-proof potting material filled with resin in the substrate storage portion; and a control substrate cover configured to cover the control substrate on an upper surface of the control substrate. Fitting with part Part has a waterproof structure by using, together with the below the control board portion of the substrate storage unit is provided lower surface plate cover made of a metal steel sheet, said control board cover upper surface providing a top plate cover made of a metal steel plate The lead wire is wired so as to pass through a groove portion connecting the operation substrate storage portion and the control substrate storage portion, ribs are formed on both sides of the groove portion, and a flange portion covering the groove portion and the ribs is formed. by providing a potential high current members of fire is concentrated on the control board, a control board accommodated in the base plate accommodating part, a waterproof structure by arranging the control board cover on the upper surface, and further, metal steel plate top plate cover, so covered with the lower surface plate cover, heat generation in the control board, and also prevents the spread of fire and control board cover at the upper and lower sheet metal cover if there is a fire, improve product safety You can make it.

A second invention is, in particular, the overhanging portion of the first invention, provided with a control panel overhanging portion and the control board cover overhanging portion, the operation panel overhanging portion so as to cover about half of the groove and the front Symbol rib provided on the operation panel, the control board cover overhanging portion, said covering half of the groove and pre-Symbol ribs, provided further on the control board cover to cover up part of the operation panel overhanging portion, wherein by providing the drain hole to the outer front cut Bed clothes inlet side prevents insulation degradation due to ingress of water into the control board or the operation board portion from the groove, thereby improving the safety.

A third invention is, in particular, the substrate housing portion of the first or second invention, wherein the outer peripheral portion of the control board and interior constitutes a lower surface metal plate end insertion groove for inserting the end portion of the lower surface plate cover, by the said control board cover peripheral portion that constitutes the top metal plate end insertion groove for inserting the end portion of the upper surface plate cover, assembly and parts in top plate cover and the lower surface plate cover factory fabricated in thin steel plate Injuries due to the end of the sheet metal during replacement can be prevented, and safety can be improved.

The fourth invention is to particularly top plate cover of the third invention, in the vicinity of the side surface front end portion to form at least one or more claws, fitting with the upper surface metal plate end insertion groove to provided a hole engaged In addition, at least one claw portion is also formed in the vicinity of the front end portion of the side surface of the lower surface sheet metal cover, and a screw or the like is used because it is configured to fit into a hole portion provided in the lower surface sheet metal end portion insertion groove portion. Assembling and fixing can be performed by fitting, etc., so that the assembling property can be improved.

A fifth invention is, in particular, the first to fourth lower surface plate cover of any one of the invention, by and fixed with at least one screw in the board housing portion, the lower surface metal plate even in strong shock of falling or the like By eliminating the possibility of the cover coming off, it is possible to prevent a decrease in safety or an accident due to the fall of the bottom sheet metal cover.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows an exploded perspective view of main parts of an upper frame body and a control device of a washing machine according to Embodiment 1 of the present invention. FIG. 2 (a) shows a connection between an operation board and the control board of the washing machine. 2B is a cross-sectional view of the main part of the substrate storage unit of the washing machine, and FIGS. 3 to 5 are cross-sectional views of the front part of the upper frame of the washing machine. Show.

  As shown in the exploded perspective view of the main part of FIG. 1, the contents of buttons and the like are printed on the sheet on the front part of the upper frame 3 having the clothing insertion port 4 in the center disposed above the washing machine body 1, An operation cover 10 coated with an adhesive is attached to the back surface, and an operation board 11a on which an operation switch 7 and an LED 8 are mounted and an operation signal from the operation board 11a are received inside the upper frame 3, and a motor A control board 11b mounted with a control component such as a triac 6 through which a high current flows for controlling (not shown) and the like is arranged, and is connected by a communication lead wire 14 to share information.

  The operation board 11a and the control board 11b are embedded in the board housing portion 12 made of a flame retardant resin and filled with a moisture-proof potting material 54 such as urethane resin and sealed.

  An operation panel unit 15 is disposed between the substrate storage unit 12 and the operation substrate 11a and the upper frame 3. The operation panel unit 15 transmits the operation of the operation cover 10 to the switch 7 on the operation substrate 11a. And a light guide path 55 that guides the light of the LED 8 to the vicinity of the operation cover 10 and a labyrinth shape A9a that overlaps the substrate storage portion 12 at the outer peripheral portion, and has a waterproof structure.

  A control board cover 16 made of a flame retardant resin is disposed between the control board 11b side of the board storage part 12 and the upper frame 3, and a labyrinth shape B9b that overlaps the board storage part 12 is provided on the outer periphery. Apply a waterproof structure.

  Furthermore, the upper surface sheet metal cover 17 made of a metal steel plate is disposed on the upper surface of the control board cover 16 that covers the control board 11b from the upper surface, and from the lower surface of the control board housing portion 12b that houses the control board 11b, The lower surface sheet metal cover 18 is attached.

  Accordingly, the control board 11b has a labyrinth-shaped waterproof structure with a control board cover 16 made of a flame retardant resin and a board housing portion 12 on both the upper and lower surfaces, and further has an upper sheet metal cover 17 and a lower sheet metal cover made of metal steel plates. 18 and complete fire prevention structure.

  Further, as shown in FIG. 2A, the operation board 11a and the control board 11b share information through the communication lead wire 14, and the communication lead wire 14 is provided in the board storage portion 12. Wiring is made so as to pass through the groove portion 19 connecting the storage portion 12a and the control board storage portion 12b, and waterproof ribs 20 for preventing overflow of the moisture-proof potting material 54 are provided on both sides of the groove portion 19.

  The operation panel portion 15 is formed with an operation panel eaves portion 21 configured to cover approximately half of the entire length of the groove portion 19 and the waterproof rib 20 portion, and the control board cover 16 has the remainder of the groove portion 19 and the waterproof rib portion 20. A control board cover eaves part 22 that covers half and covers part of the operation panel eaves part 21 is extended to prevent water from entering the groove part 19.

  Furthermore, as shown in the arrow view of FIG. 2B, the shape of the substrate storage portion 12 is such that a drain hole 23 for drainage is provided outside the waterproof rib 20 on the side of the inlet (indicated by arrow A). Is provided. Since the inlet 4 (shown in FIG. 1) is used to put in and out the clothes, the moisture that has entered by splashing from this direction is dropped from the drain hole 23 before entering the inside of the waterproof rib 20.

  As shown in FIG. 3, a lower surface sheet metal end portion insertion groove portion 24 into which the side surface end portion 18 a of the lower surface sheet metal cover 18 is inserted is formed on the outer peripheral portion of the control substrate 11 b of the substrate storage portion 12. An upper surface sheet metal end portion insertion groove portion 50 into which the side surface end portion 17a of the upper surface sheet metal cover 17 is inserted is formed on the outer peripheral portion. The lower end portion of the side surface end portion 17a of the upper surface sheet metal cover 17 and the upper end of the side surface end portion 18a of the lower surface sheet metal cover 18 constitute an overlap (overlapping in the vertical direction) by the dimension S, and the control board 11b is in an emergency fire. It is formed so that there is no such thing as being burned outward.

  As shown in FIG. 4, at least one upper surface sheet metal cover claw portion 26 is formed in the vicinity of the side surface end portion 17 a of the upper surface sheet metal cover 17, and the upper surface sheet metal end portion insertion groove 50 on the outer periphery of the control board cover 16. The control board cover 16 is provided with a hole portion 27 of the control board cover 16 and is held, and at least one lower surface metal plate cover claw portion 28 is also formed in the vicinity of the side surface end portion 18a of the lower surface metal plate cover 18, It is configured to be fitted and held in a hole 29 of the substrate storage portion 12 provided in the end face insertion groove 24 on the outer periphery of the substrate storage portion 12. It is clear that the relationship between the claw portion and the hole portion shows the same effect even in the reverse configuration.

  As shown in FIG. 5, the lower surface sheet metal cover 18 is fixed to a boss portion 53 integrally formed with the substrate housing portion 12 from below by at least one or more screws 51.

  About the washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  A member through which a high current that may ignite is concentrated is concentrated on the control board 11b, a control board cover 16 made of a flame-retardant material and a top sheet metal cover 17 made of a steel plate are disposed, and the control board 11b of the board storage portion 12 is arranged. A lower surface sheet metal cover 18 is disposed on the lower side surface of the control board 11b and the operation board 11a in a waterproof structure with a labyrinth shape A9a of the operation panel 15 that overlaps the board storage part 12 and a labyrinth shape B9b of the control board cover 16. Even if there is heat generation and ignition in the control board 11a due to the configuration in which the side edge 17a of the upper surface sheet metal cover 17 and the side edge 18a of the lower surface sheet metal cover 18 overlap with each other. The control board cover 16 of the flame-retardant resin member and the upper and lower sheet metal covers can prevent the spread of fire and improve the safety of the product.

  Since the upper surface of the control board 11a is covered with a sheet metal member, the control board cover 16 is abolished if there is sufficient space and the lead wire or the like does not touch the edge portion of the upper sheet metal cover 17. Needless to say, the upper sheet metal cover 17 can be covered.

  Further, the groove portion 19 for wiring the communication lead wire 14 connecting the operation board 11a and the control board 11b is connected to the control board section 11b or the operation board section 11a by the overlapping operation panel flange section 21 and control board cover flange section 22. The infiltration of water is prevented and the insulation is ensured, so safety can be improved.

  In addition, since the end surfaces of the upper surface sheet metal cover 17 and the lower surface sheet metal cover 18 made of thin sheet steel are inserted into the end surface insertion groove portions, injuries due to the sheet metal end portions during assembly and replacement of parts at the factory are caused. Can be prevented and safety can be improved.

  Further, the upper surface sheet metal cover 17 and the lower surface sheet metal cover 18 are held by fitting the upper surface sheet metal cover claw portion 26 and the lower surface sheet metal cover 28 with the hole portion 27 of the control substrate cover 16 and the hole portion 29 of the substrate storage portion 12. Therefore, it can be assembled and fixed by fitting or the like without using screws or the like, and the assemblability can be improved.

  Further, since the lower surface sheet metal cover 18 is fitted and attached to the substrate housing portion 12 from the lower surface by the lower surface sheet metal cover claw portion 28, there is normally no risk of dropping or the like, but it can be removed even in the event of a strong impact. Since it is attached with screws so that it does not occur, a safer configuration can be obtained.

  As described above, the washing machine according to the present invention concentrates the members through which a high current flows on the control board and covers the flame retardant cover and the sheet metal cover made of metal steel plate. Therefore, the present invention can be applied to this kind of electric equipment having a control device in which high current and low current are mixed.

The main part exploded perspective view of the upper frame of a washing machine in an embodiment of the invention, and a control device (A) Main part sectional drawing of the connection part of the operation board and control board of the washing machine (b) The principal part arrow view of the board | substrate storage part of the washing machine Cross-sectional view of the main part of the front part of the upper frame of the washing machine Cross-sectional view of the main part of the front part of the upper frame of the washing machine Cross-sectional view of the main part of the front part of the upper frame of the washing machine The main part exploded perspective view of the upper frame of the conventional washing machine and the control device

1 Washing Machine Body 3 Upper Frame 4 Clothing Input 7 Switch 8 LED
9a Labyrinth shape A (waterproof structure)
9b Labyrinth shape B (waterproof structure)
11a Operation board 11b Control board 12 Board storage part 12a Operation board storage part 12b Control board storage part 13 Button part 14 Communication lead wire 15 Operation panel 16 Control board cover 17 Upper surface sheet metal cover 18 Lower surface sheet metal cover 19 Groove part 20 Waterproof rib 21 Operation Panel flange 22 Control board cover flange 23 Drain hole 24 Lower surface sheet metal edge insertion groove 26 Upper surface sheet metal cover claw (claw)
27 Control board cover hole (hole)
28 Bottom sheet metal cover claw part (claw part)
29 Holes for board storage (holes)
50 Upper surface sheet metal edge insertion groove 51 Screw 54 Moisture-proof potting material

Claims (5)

An upper frame body that is attached to the upper part of the washing machine body and has a garment insertion port in a substantially central part, an operation board that is arranged in front of the upper frame body, and that is mounted with operation switches and LEDs, and a washing machine A control board on which a control component that controls high current flows is mounted, an operation panel having a button portion disposed between the operation board and the upper frame, and leads for connecting the operation board and the control board a line, and the operation substrate storage unit and a control board housing unit in which the operation board housing section for housing the substrate for accommodating the control board, inside the substrate accommodating portion in a state of accommodating the control board and the operation board A moisture-proof potting material filled with a resin, and a control board cover configured to cover the control board on an upper surface of the control board, the control board cover being fitted to the board housing portion on a side surface Using Has a water structure, wherein the lower side of the control board portion of the substrate storage unit is provided lower surface plate cover made of a metal steel plate, provided with a top plate cover made of metal steel sheet into the control board cover top surface, said lead A washing machine in which wiring is made to pass through a groove portion connecting the operation substrate storage portion and the control substrate storage portion, ribs are formed on both sides of the groove portion, and a collar portion is provided to cover the groove portion and the ribs . The eaves portion, provided with an operation panel overhanging portion and the control board cover overhanging portion, the operation panel overhanging portion, the provided on the operation panel so as to cover about half of the groove and pre-Symbol ribs, the control board cover eaves section covers the other half of the groove and the front Symbol ribs, provided further on the control board cover to cover up part of the operation panel overhanging portion, before cut blanking outside of the garment inlet side The washing machine according to claim 1, wherein a drain hole is provided. The substrate storage unit is configured in the outer peripheral portion of the control board and interior constitutes a lower surface metal plate end insertion groove for inserting the end portion of the lower surface plate cover, the said control board cover the outer periphery edge of the top plate cover The washing machine according to claim 1 or 2, wherein an upper surface sheet metal end portion insertion groove portion into which the portion is inserted is configured. The top sheet metal cover forms at least one or more of the claw portions in the vicinity side tip, the top metal plate end insertion groove into fitted with holes provided, and side surface vicinity of a leading end portion of the lower surface plate cover 4. The washing machine according to claim 3 , wherein at least one claw portion is also formed and fitted into a hole portion provided in the lower surface sheet metal end portion insertion groove portion. The lower surface plate cover The washing machine according to any one of claims 1 to 4 fixed structure by at least one screw to said substrate accommodating portion.

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