JP4835669B2 - Drum washing machine - Google Patents

Description

  The present invention relates to a drum-type washing machine having a control board disposed above a main body.

  Conventionally, the control board is attached to the upper frame of this type of washing machine by pre-adhering the control board storage part storing the control board and the operation panel having the button part to the upper frame in the fixed state. The structure to attach is proposed (for example, refer patent document 1).

FIG. 5 shows a side view of the front part of the upper frame showing the mounting structure of the control board of the conventional drum type washing machine described in Patent Document 1.

  As shown in FIG. 5, a control board 9 comprising a light emitting element 23 such as a switch 24 and a light emitting diode is built in the front part of the upper frame 3, and this control board 9 is a urethane resin that is waterproof on both sides. In order to seal with the potting material 17 made of, etc., the control board 9 is fixed inside the control board storage part 10 configured to cover the lower part.

  At this time, even if various pressings are applied to the upper frame 3, abnormal input to the switch 24 and the like can be prevented and the reliability of the control board 9 is improved.

  On the upper surface side of the control board housing part 10, a button part 11 and a light guide path 16 for guiding the light of the light emitting element 23 arranged on the control board 9 to the surface are provided integrally with the upper frame 3. The operation panel 12 is arranged so as to cover the opposite side of the control board storage unit 10 (that is, the upper side in FIG. 5), and the front panel (in FIG. 5) is used to stabilize the mounting of the operation panel 12 and the control board storage unit 10. At the left end), the screw 18 is screwed to the boss portion 20 formed in the control base storage portion 10, and the rear portion (right end in FIG. 5) is fitted and locked by the claw portion 19 formed in an L shape. It is configured as such and integrated.

The control board storage unit 10 having the control board 9 provided therein and the operation panel 12 are configured to be fixed in advance as a unit member by screwing or the like as described above, and then attached to the upper frame 3.
JP 2008-6046 A

  In the conventional configuration, the light emitting element 23 and the light guide path 16 must be prevented from leaking light. When light leakage occurs, the display function is deteriorated or the original color changes when the colors of adjacent light emitting elements are different. For this purpose, the gap between the light guide path 16 of the operation panel 12 and the light emitting element 23 must be made as small as possible.

  However, if the gap is small, when the control board 9 and the control board storage unit 10 and the operation panel 12 are combined, the light emitting element 23 such as a light emitting diode or LED hits the side wall of the light guide path 16 and falls down. is there.

  In the light emitting element 23, an LED chip is generally embedded in a transparent epoxy resin, and thin lead wires from an anode and a cathode for insertion solder connection are taken out from a printed board. Therefore, the thin lead wire is likely to be deformed, and stress concentration on the solder fixing portion must be avoided.

  In addition, the workability is not good, for example, the work must be carefully performed at the time of assembly, and the light emitting element 23 is modified when the light emitting element 23 hits against the distal end side wall of the light guide path 16 or the light emitting element 23 itself in the worst case. There was also a risk of damage.

  The present invention solves the above-described conventional problems. When an operation panel is attached to a control board, light emitting elements such as LEDs on the control board hit a wall or the like constituting a light guide path, thereby causing deformation or displacement. The object is to provide a drum-type washing machine that prevents this.

In order to solve the above-described conventional problems, the drum type washing machine of the present invention includes an operation display panel base to which an operation display panel disposed above the front surface of the washing machine casing is attached, and a light emitting element such as an LED. A loaded control board, and a control board storage case that holds and stores the control board while moisture-proofing it;
An operation panel having a light guide path for covering the periphery of the light emitting element and guiding the illumination to the operation display panel ; and a boss portion formed on the back surface of the operation display panel base for fastening the control board storage case with screws. When fastening the control board storage case with the operation panel sandwiched between the display panel base, a plurality of positioning pins integrally formed on the operation panel are inserted into the plurality of guide holes provided in the control board storage case, and the light emitting element Before the cover is covered with the tip of the light guide path wall body of the light guide path, the positioning pin is engaged with the guide hole, and the control board and the operation panel are positioned. .

  As a result, when the control board and the operation panel are combined, the light emitting elements such as light emitting diodes and LEDs are positioned without hitting the front end side walls of the light guide path, enabling smooth assembly, improving productivity, and reducing the defect rate. Is effective.

  The drum type washing machine of the present invention eliminates defects during assembly of the light emitting elements of the control board.

A first aspect of the present invention is an operation display panel base in which a washing machine casing storing a laundry and storing a drum that is rotationally driven, and an operation display panel disposed above the front surface of the washing machine casing are attached. A control board on which light emitting elements such as switches and LEDs are mounted, a control board storage case that holds and stores the control board while moisture-proofing the light, and covers the periphery of the light emitting elements of the control board and transmits the light to the operation display panel An operation panel having a light guide path leading to the switch and a button portion for pressing the switch, and a boss portion formed on the back surface of the operation display panel base for fastening the control board storage case with a screw. A plurality of positions integrally formed with the operation panel in a plurality of guide holes provided in the control board storage case when the control board storage case is fastened with the operation panel interposed therebetween. And the positioning pin is engaged with the guide hole before the light emitting element is covered with the tip of the light guide path wall of the light guide path, and the control board and the operation are inserted. By adopting a configuration in which the light emitting element is positioned with respect to the panel, the light emitting element hits the tip side wall of the light guide path, and the occurrence of a defect such as deformation or breakage of the light emitting element is eliminated, thereby improving productivity.

  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 is an external perspective view of a drum-type washing machine according to an embodiment of the present invention, FIG. 2 is a partial side sectional view of a front portion of an upper frame of the washing machine, and FIG. 3 is a control board and operation of the washing machine. 4 is an exploded view of the panel, and FIG. 4 shows a partial side sectional view of the washing machine in the middle of assembly.

  As shown in FIG. 1, the washing machine casing 31 includes a front frame plate 37 that pivotally supports a lid 34 at the front center so that the lid 34 can be freely opened and closed. An operation display panel 36 for displaying the progress of the process is provided.

  Inside the washing machine housing 31, a water tank 33 is rotatably supported by a drum 32 driven by a motor 35, and the motor 35 and the like are controlled by a signal input from the operation display panel 36. The progress of the process is displayed on the operation display panel 36.

  As shown in the partial side sectional view of the front part of the upper frame in FIG. 2, the operation display panel 36 is a thin sheet-like material, and an adhesive is applied to the back surface, and the operation display panel base 38 is attached to the operation display panel base 38. Paste with.

  Inside the operation display panel base 38, a control board 40 on which a light emitting element 44 such as a switch 43 or LED is mounted, and a light guide path that covers the periphery of the light emitting element 44 and guides light to the operation display panel 36 on the surface. 45 and an operation panel 39 in which a button portion 46 for pressing the switch 43 is integrally formed.

  The control board 40 is held and housed in a control board housing case 42 in a waterproof and sealed state with a waterproof urethane resin 41 or the like on both sides of the control board 40.

  The leading end 48 of the light guide path wall 47 is brought close to the light emitting element 44 so that the light emitting element 44 and the light guide path 45 are guided to the operation display panel 36 on the surface without causing light leakage. The light path wall 47 also covers the light emitting element 44 with a gap as narrow as possible.

  On the other hand, a plurality of positioning pins 49 are integrally formed in the vicinity of the side surface of the control board 40 of the operation panel 39, and a guide hole 50 is provided in the control board storage case 42 at a position corresponding to the positioning pins 49 and assembled. Then, the positioning pin 49 is inserted into the guide hole 50, and the tip of the light emitting element 44 is inserted from the tip 48 of the light guide path wall 47.

  The control board storage case 42 storing the control board 40 holds the panel hinge 53 of the operation panel 39 with a mounting hinge 51 formed in part, and the boss part 54 formed on the back surface of the operation display panel base 38. Are attached with screws 52.

  As shown in the exploded view of FIG. 3, the positioning pin 49 is integrally formed on the outer peripheral portion 55 of the operation panel 39 so as to hang downward in the figure, while the guide hole 50 is formed on the outer edge of the control board storage case 42. The flange portion 56 is formed inside the guide tube portion 57.

  4 shows an intermediate state in the process of assembling the control board storage case 42 containing the control board 40 to the operation panel 39, and the tip 58 of the positioning pin 49 is a guide cylinder 57. And the insertion into the guide hole 50 has started.

  At this time, the upper end portion of the light emitting element 44 is not yet inserted into the distal end portion 48 of the light guide path wall body 47, and a minute gap S is formed. The positioning pin 49 is inserted into the guide hole 50 and the control board 40 and the operation panel 39 are completely positioned, that is, the positioning is performed so that the light emitting element 44 is correctly inserted into the light guide path 45. The substrate storage case 42 is assembled to the operation panel 39, and then the fastening is completed with the screws 52.

  In the present application, the configuration in which the control board storage case 42 containing the control board 40 and the operation panel 39 are attached to the back surface of the operation display panel base 38 is the attachment hinge 51 while holding the panel hinge 53 of the operation panel 39. The control board storage case 42 and the operation panel 39 are positioned by the positioning pins 49 and the guide holes 50 in the configuration in which the control board storage case 42 and the operation panel 39 are attached to the boss portion 54 formed on the back surface of the operation display panel base 38. Therefore, it is not necessary to pre-position and tentatively assemble, and the operation panel 39 and the control board storage case 42 may be assembled on the operation panel 39.

  As described above, in the present embodiment, the light emitting element 44 is supported on the thin lead wire and disposed on the control substrate 40, and even when the tip portion 48 of the light guide path 45 is lightly hit, it is easily deformed. Since the positioning of the light emitting element 44 and the light guide path 45 is ensured, the occurrence of problems due to work variations and the like is eliminated, and light leakage of the light emitting element 44 and the light guide path 45 is reduced and stable and excellent in appearance. Can be displayed smoothly and can be assembled smoothly, improving the productivity and reducing the defective rate.

  As described above, the control board configuration of the drum-type washing machine according to the present invention eliminates damage at the time of assembling the light emitting element and improves the reliability. Other electronic devices including the control board and the operation panel It can be applied to any use.

1 is an external perspective view of a drum type washing machine according to an embodiment of the present invention. Partial side sectional view of the front part of the upper frame of the washing machine Exploded view of control board and operation panel of the washing machine Partial sectional side view of the washing machine during assembly Side view of front part of upper frame showing mounting structure of control board of conventional drum type washing machine

36 operation display panel 37 front frame plate 38 operation display panel base 39 operation panel 40 control board 42 control board storage case 43 switch 44 light emitting element 45 light guide path 46 button part 47 light guide path wall body 48 tip part 49 positioning pin 50 guide hole

Claims (1)

Washing machine housing for storing laundry and rotating drum, operation display panel base to which an operation display panel disposed above the front surface of the washing machine housing is pasted, switch, LED, etc. A control board on which the light emitting elements are mounted, a control board storage case that holds and stores the control board while moisture-proofing, a light guide path that covers the periphery of the light emitting elements of the control board and guides the light to the operation display panel, An operation panel having a button portion for pressing a switch; and a boss portion formed on the back surface of the operation display panel base for fastening the control board storage case with a screw, and sandwiching the operation panel between the operation display panel bases When fastening the control board storage case, insert a plurality of positioning pins integrally formed on the operation panel into the plurality of guide holes provided in the control board storage case. In addition, before the light emitting element is covered with the distal end portion of the light guide path wall of the light guide path, the positioning pin is engaged with the guide hole, and the control board and the operation panel are positioned. A drum-type washing machine that is made up of

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