JPH06154476A - Control device of washing machine - Google Patents

Abstract

PURPOSE:To provide a control device for a washing machine in which a plurality of current feed control elements are installed to control the current feed to a motor for the washing operation and also a plurality of heat radiating boards are furnished for mounting of these current feed control elements and for radiating the heat therefrom, wherein a single sort of heat radiating plate is used to arrange the control elements in such a way as being free from thermal interference. CONSTITUTION:A common type of heat radiating boards are used for the first and the second heat radiating board, in which holes 19-21 for mounting current feed control elements are formed at different spacings, wherein the boards are arranged back to back so that the holes 19-21 are dislocated, and therefore, the positions of current feed control elements 12a, 12b and ones 12c, 12d mounted therein are also set off, and an arrangement free from thermal interference can be achieved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat sink and a control device for a washing machine having an improved arrangement structure.

[0002]

2. Description of the Related Art Recently, in a washing machine, a control device has been
There are provided a plurality of energization control elements such as triacs for controlling energization of the washing motor, and a plurality of heat dissipation plates to which the energization control elements are attached to radiate heat.

[0003]

In the structure described above, a plurality of energization control elements are divided into several groups and are respectively attached to the heat radiating plate. The respective energization control elements are subjected to thermal interference. In order to arrange so that there is no such problem, it is necessary to use a plurality of types of heat dissipation plates that are formed so that the mounting positions of the energization control elements are different from each other, which increases the cost and prevents the selection arrangement from being mistaken. As a result, there is a problem in that the assembling is not good due to the necessity of assembling.

The present invention has been made in view of the above circumstances, and an object thereof is to reduce the cost and improve the assemblability without requiring a plurality of types of heat sinks. The purpose of the present invention is to provide a washing machine controller.

[0005]

In order to achieve the above object, in the washing machine control device of the present invention, at least three holes for mounting the energization control elements are made different in the heat radiating plate, and the distance between them is made different. It is characterized by using the formed common one and arranging it in a back-to-back state. In this case, it is preferable that the heat radiation plate has a bent extension portion at one end thereof.

[0006]

According to the above-mentioned means, at least three holes for mounting the energization control elements are formed with different space dimensions even if the heat radiation plate is common, so that they are arranged back to back. As a result, the positions of the holes for mounting the energization control elements, and consequently the positions of the energization control elements attached to them, are different, and the energization control elements can be arranged so as not to thermally interfere. Therefore, it is not necessary to use a plurality of types of heat dissipation plates, and it is possible to achieve cost reduction and improvement of assemblability due to common use.

Further, in the case where the heat dissipation plate has a bent extension at one end thereof, the heat dissipation plate can be arranged in a correct orientation by the position and orientation of the bent extension. Further improvement in sex can be achieved. Further, in this case, the bent extension portion can secure a larger heat radiation area of the heat radiation plate, so that the heat radiation effect of the energization control element can be increased.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, in FIG. 3, the outer box 1 which is the outer shell of the washing machine.
The internal mechanism (not shown) such as a well-known tank and a motor is internally provided, and the top cover 2 is mounted on the uppermost part. The top cover 2 is provided with a lid 3, a water supply valve 4 and a power switch 5 on the rear part thereof, and an operation panel 6 having various operation parts and various display parts on the front part.

As shown in FIG.
As shown in FIG. 5, the control device case 7 is provided, and the control device 8 shown in FIG.
The control device 8 includes a first printed wiring board 9 and a second printed wiring board 9.
Based on the printed wiring board 10 of FIG. 1, the power supply transformer 11, the energization control element 12, and the heat dissipation plate 13 are mounted on the first printed wiring board 9, and the second printed wiring board 1
0 to the microcomputer 14, the tact switch 15,
The light emitting diode 16 is mounted and configured. Also, the first
A lead wire 17 for power supply is connected to the printed wiring board 9 and led out, and the first printed wiring board 9 and the second printed wiring board 10 are connected by a flat cable 18.

Here, FIG. 1 shows the energization control element 12 and the heat dissipation plate 13 in detail. As is apparent from FIG. 1, the energization control elements 12 are plural, for example, four (first to fourth). Energization control elements 12a to 12d) and a plurality of heat dissipation plates 13, for example, two heat dissipation plates (first and second heat dissipation plates 13).
a, 13b) exist.

Therefore, the first to fourth energization control elements 12a to 12d are all made of, for example, thyristors having the same shape, and control the energization of the washing motor in the forward and reverse directions, and at the same time, in the water supply valve. It is designed to control energization and energization of the drain valve.

The first and second heat radiating plates 13a and 13b are also provided.
Also has the same shape, one of them (first heat dissipation plate 13a)
Is shown in FIG. As is clear from FIG. 2, the heat sink 1
3 has at least three holes 19 for mounting energization control elements.
21 are formed with different distances between them. or,
In this case, a bent extension portion 22 is formed at one end portion (left end portion in the drawing) of the heat dissipation plate 13 in the longitudinal direction, and a dimension from this one end portion to the first mounting hole 19 closest to the bent extension portion 22, The third mounting hole 21 closest to the other end (right end in the figure)
The second mounting hole 20 is provided closer to the one end side than the longitudinal center of the heat dissipation plate 13. In addition, in addition to the above, the heat dissipation plate 13 has two protrusions 2 at each lower position of the first to third attachment holes 19 to 21.
3 and a recessed portion 24, and mounting tongues 26 having holes 25 are formed at the lower portions of both end portions.

With this structure, as shown in FIG. 1, the first heat dissipation plate 13a is provided with a first energization control element 12a in the first mounting hole 19 and a second energization hole 20 in the second mounting hole 20. Control element 1
2b are respectively attached by screws 27, while the second heat dissipation plate 13b is provided with the third energization control element 12c in the second attachment hole 20 and the fourth energization control element 12d in the third attachment hole 21. Similarly, they are attached by screws 27, respectively. At this time, the first to fourth energization control elements 1
By arranging 2a to 12d between two protrusions 23, respectively, positioning and detent during mounting of the first to fourth energization control elements 12a to 12d are performed.

The first heat radiating plate 13a having the first and second energization control elements 12a and 12b attached in this way
And the second heat radiating plate 13b to which the third and fourth energization control elements 12c and 12d are attached are arranged in a back-to-back state in which the bent extensions 22 are different in position and orientation, and The printed wiring boards 9 are attached by, for example, rivets 28 that pass through the holes 25 of the attachment tongues 26. Further, the first to fourth energization control elements 12a to 12d are also connected to the first printed wiring board 9 by soldering or the like.

As a result of mounting as described above, the first to fourth energization control elements 12a to 12d are located at the respective first to third mounting holes 19 to 2 as shown in FIG.
1, the energization control elements 12a to 12d can be arranged so as not to thermally interfere with each other. Moreover, the heat dissipation plate 13 may be the same for both the first heat dissipation plate 13a and the second heat dissipation plate 13b, and there is no need for a plurality of types as in the conventional one, so that the cost is reduced. It is possible to achieve low cost. Moreover, in this case, the heat radiating plate 13 only needs to be mounted by arranging the first heat radiating plate 13a and the second heat radiating plate 13b in a back-to-back state, and does not require a difficult selective arrangement unlike the conventional one. Assemblability can also be improved.

In addition, the radiator plate 13 (first radiator plate 13a
And the second heat radiating plate 13b) is formed with a bent extension 22 at one end thereof, and the heat radiating plate 13 can be arranged in an error-free orientation depending on the position and orientation of the bent extension 22. Therefore, it is possible to further improve the assembling property. Further, in this case, the bent extension portion 22 can secure a larger heat dissipation area of the heat dissipation plate 13, and thus the heat dissipation effect of the energization control element 12 can be increased.

The present invention is not limited to the embodiments described above and shown in the drawings, and in particular, with respect to the specific shapes and specific numbers of the current control elements and heat sinks,
It can be implemented by appropriately changing it within a range not departing from the gist.

[0018]

The washing machine controller of the present invention is as described above, and has the following effects. The control device for a washing machine according to claim 1, wherein a plurality of energization control elements for controlling energization of the washing motor are provided, and
If there is also a plurality of heat dissipation plates to which this energization control element is attached and that dissipates heat, a common one is used in which at least three holes for mounting the energization control element are formed in the heat dissipation plate with different intervals. However, by arranging them in a back-to-back state, it is possible to arrange the energization control elements so as not to thermally interfere with each other without requiring a plurality of types of heat sinks, which leads to cost reduction and assembly. An improvement can be achieved.

According to another aspect of the washing machine controller,
Further, since the heat dissipation plate has the bent extension part at one end thereof, the heat dissipation plate can be arranged in the correct orientation depending on the position and direction of the bent extension part. Of the heat dissipation plate can be secured, and the heat dissipation area of the heat dissipation plate can be increased, so that the heat dissipation effect of the energization control element can be increased.

[Brief description of drawings]

FIG. 1 is a plan view of a heat dissipation plate assembly portion showing an embodiment of the present invention.

FIG. 2 is a perspective view of one heat sink.

FIG. 3 is an external perspective view of the entire washing machine

FIG. 4 is a vertical sectional side view of a portion where a control device of the washing machine exists.

FIG. 5 is a perspective view of a control device.

[Explanation of symbols]

8 is a control device, 12 is an energization control element, 12a is a first energization control element, 12b is a second energization control element, 12c is a third energization control element, 12d is a fourth energization control element, 13
Is a heat radiating plate, 13a is a first heat radiating plate, 13b is a second heat radiating plate, 19 to 21 are first to third mounting holes (holes for mounting the energization control element), and 22 is a bent extension. .

Claims (2)

[Claims] 1. A plurality of energization control elements, including one for controlling energization of a washing motor, and a plurality of heat dissipation plates for mounting the energization control elements to dissipate heat. A control device for a washing machine, characterized in that at least three holes for mounting the energization control elements are formed by using common ones having different intervals, and the holes are arranged back to back. 2. The control device for the washing machine according to claim 1, wherein the heat dissipation plate has a bent extension at one end thereof.