JPH0550315B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for installing a control unit of a washing machine, in which a control unit consisting of a board, switches, electronic components, etc. arranged on the board is housed in an operation box.

[Technical background of the invention and its problems] In recent years, washing machines of this type whose operation is controlled by a microcomputer have been provided. However, in this case,
The control unit, which consists of the circuit board that makes up the microcomputer and the switches and electronic components installed on it, is housed in an exposed state inside the operation box provided at the top of the washing machine main body. Therefore, there is a high risk of touching each part and place of the electronic component when it is installed, and if it is touched, static electricity charged in each part and place will be released through the electronic component. Since the electronic components are destroyed, the work must be carried out with each of the above-mentioned parts and locations individually grounded, which poses a problem in that the work is troublesome and the equipment becomes large-scale. In addition, in the state after attachment, washing machines are susceptible to damage due to water, which is a problem unique to washing machines, and countermeasures for this problem have continued to be a problem.

[Object of the Invention] The present invention has been made in view of the above-mentioned circumstances, and therefore, its purpose is to improve workability and simplify equipment by eliminating the need for grounding each time a control unit is attached. An object of the present invention is to provide an excellent method for installing a control unit of a washing machine, which can also improve waterproofness.

[Summary of the Invention] According to the present invention, a control unit is housed in a predetermined case that covers the entire periphery of the control unit, and then the whole case is housed and installed inside an operation box. It is characterized by eliminating the risk of touching it and also eliminating the risk of water intrusion.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to the drawings. First of all, in Fig. 2, 1 is the outer box of the main body, especially the outer box of the two-tub washing machine, in which a washing tub and a dehydration tub (neither are shown) are arranged side by side, and a Both tanks are provided with lids 2 and 3 for opening and closing the openings on their upper surfaces, respectively, and are also provided with an operation box 4. Specifically, the operation box 4 is made up of a combination of a base 5 and a panel 6 shown in FIG. A hook 8 and a boss 9 are formed, and a first
A plurality of recesses 10 shown in the figure are formed. On the other hand, 11 is a control unit, 12 is its board,
13 is a switch arranged on the board 12, and 14 is a large number of electronic parts arranged on the board 12 together with the switch 13. Reference numeral 15 denotes a case, which consists of a case body 16 with an open bottom and a bottom cover 17 that closes the open part of the bottom. When the lid is closed and folded, the board 1 is removed by an internal boss 18 formed in advance on the case body 16 and an internal boss 19 formed in advance on the bottom cover 17.
2 is clamped and fixed. Incidentally, reference numeral 20 denotes a screw that connects the case body 16 and the bottom cover 17 at both the internal bosses 18 and 19. Further, 21 is the outer upper surface of the case 15 (the outer upper surface of the case body 16)
is a convex portion formed in the same number as the concave portion 10 of the operation box panel 6, and the operation sheet 22 is attached to this convex portion.
The same number of holes 23 are fitted in the peripheral edge of the case 15, and the operation sheet 22 is positioned and installed on the outer upper surface of the case 15. Furthermore, reference numerals 24 and 25 shown in FIG. By hooking it to the hook 8 and then fixing the rear mounting leg 25 to the boss 9 with the screw 26, the case 15 and the control unit 11
is attached inside the operation box 4. Also in this case,
By fitting the convex portion 21 into the recess 10 and thereby ensuring the fixation of the operation sheet 22, and further pressing the operation sheet 22 against the inner upper surface of the panel 6, the inner upper surface of the panel 6 and the case 15 are fixed. It is sandwiched between the outer upper surface of the holder and the outer upper surface of the holder to make it even more firmly fixed. Here, 27 shown in FIG. 4 is a draining rib formed on the inner upper surface of the panel 6, and this includes the outer upper surface of the case 15 (the outer upper surface of the case body 16).
A stepped portion 28 for water conduction formed in corresponds to the
Further, on the outer surface of the case 15, a rib 29 for water guiding is formed in series with the step portion 28, and a rib 30 for guiding water is formed parallel to the rib 29 on the outside of the rib 27 for draining. There is. Furthermore, in FIGS. 5 and 6, 31 and 32 are a pair of connectors for dealing with the difference in frequency, 33 and 34 are their respective lead wires, and 35 is the lead wire 33, 3.
4 is a lead-out part, and 36 and 37 are claws formed on the outer bottom surface of the case 15 (bottom case 17) near the above-mentioned lead part 35, and the connector 31 is connected to one of the claws 36. The connectors 32 are elastically engaged with the other claws 37 and held detachably. In addition, the connector 32 is shown in FIG.
Fig. 6 shows a state in which the connector 32 is removed from the claw 37 and connected to the connector 31.
The figure shows a state in which it has been removed from the body and is engaged and held by the claw 37.

Now, in the case of the configuration as described above, the control unit 11 is housed in the case 15, and then the whole case 15 is housed and installed inside the operation box 4. Therefore, when the control unit 11 is installed, there is no charge There is no longer any risk of each part and place touching the electronic component 14, and therefore there is no need for grounding of each part and place as in the conventional case, making the work easier and achieving improved workability. At the same time, the equipment can be simplified. Furthermore, the control unit 11 housed in the case 15 is protected from water ingress by the case 15. In other words, the case 15 ensures sufficient waterproofness, so that the electronic components 14 will not be damaged due to water ingress. .

In addition to the above, especially in the above embodiments,
The rib 27 for draining water formed on the inner upper surface of the operation box 4 (the inner surface of the panel 6) and the case 1 corresponding to the rib 27 for draining
The water guiding step 28 formed on the outer upper surface of the case 15 and the water guiding rib 29 formed on the outer surface of the case 15 and especially connected to the step 28 prevent water from entering from the periphery of the opening 7 of the panel 6. The water can be treated in a certain flow path, such as a flow path that prevents it from reaching a heat dissipation slit formed on the side wall of the case 15 (not shown), and an even better waterproofing effect can be obtained. In addition, regarding the installation of the operation sheet 22, since it is positioned by the convex portion 21 formed on the outer upper surface of the case 15, it can be installed reliably in a fixed position, and moreover, it can be installed in that state. Since the convex portion 21 is fitted into the recess 10 formed on the inner upper surface of the operation box 4 (inner surface of the panel 6), the operation sheet 22 can be fixed more securely, and furthermore, the operation sheet 22 can be Since it is sandwiched between the inner upper surface of the box 4 and the outer upper surface of the case 15, the fixing can be extremely strong, and problems such as peeling from the periphery will not occur. In addition, claws 36 and 37 that hold the connectors 31 and 32 to deal with the difference in frequency are formed near the outlet portions 35 that are outlet ports for the lead wires 33 and 34, respectively, so that the lead wires 33 and The length of the lead wires 33 and 34 can be made as short as possible, and the amount of noise received by the lead wires 33 and 34 can therefore be reduced as much as possible, and further accuracy can be expected in the operation of the electronic component 14.

However, the present invention is not limited to the embodiments described above and shown in the drawings, and may be implemented with appropriate modifications within the scope of the invention.

[Effects of the Invention] As is clear from the above description, according to the present invention, there is no need for grounding each time the control unit is attached, thereby improving workability and simplifying the equipment. This has the excellent effect of improving waterproofness.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a longitudinal sectional front view of the main parts, Fig. 2 is a perspective view of the entire upper part of the washing machine, and Fig. 3 is a main part of the operation box. Figure 4 is an enlarged vertical side view of the part of the main part that handles flooding, Figure 5 is a bottom view of the main part, and Figure 6 is the part of the main part that holds the connector. FIG. In the figure, 4 is an operation box, 10 is a recess, 11 is a control unit, 12 is a board, 13 is a switch, 14 is an electronic component, 15 is a case, 21 is a convex part, 22 is an operation sheet, and 27 is a rib for draining water. , 28 is a stepped portion for water guiding, 29 is a rib for water guiding, 31 and 32 are connectors, 33 and 34 are lead wires, 35 is an outlet, and 36 and 37 are claws, respectively.

Claims (1)

[Claims] 1 In a method of housing and installing a control unit consisting of a board and switches and electronic components arranged on it inside an operation box provided at the top of the main body, the control unit is housed in a prescribed case that covers its entire periphery. A method for installing a control unit for a washing machine, characterized in that the control unit is housed in the operation box together with the case and then installed.