JPH0385111A - Display device for cooker or the like - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a display device that can be pressed on cooking utensils such as rice cookers used in general households.

Conventional technology A conventional display device of this type was as shown in FIG.

That is, in FIG. 4, 1 is a cooking device main body, 2 is a lid that opens and closes an upper opening of the cooking device main body 1, and a display unit 3 that displays the cooking status is fixed to the front surface. Inside the display unit 3, a circuit board 4 is sandwiched between a board cover 6 and a stop boss 3& of the display unit 3, and is fixed with screws 6. On the circuit board 4, a display 7, a variable resistor for adjustment 8, and an electronic component 9 are soldered to the buttons, especially the display 7, which is visible from the outside, so a holder is used to position it. It is held at 10. Holder 10
is fixed to the circuit board 4 with fixing claws 10&.

FIG. 6 is an exploded perspective view of the display unit 3. While looking at the solder surface 4& of the circuit board 4 on the back side of the display unit 3, align the holes with the stop bosses 3a of the display unit 3, and then align the positioning ribs 3b. Place the board cover 6 on top of it and secure it with the screws 6.

FIG. 6 shows how the display 7, the holder 10, the adjustable variable resistor 8, and the electronic components 9 are attached to the circuit board 4.

Here, the adjusting variable resistor 8 was fixed with a fixing agent 12 so as not to rotate after being adjusted with a screwdriver 11 or the like.

Problems to be Solved by the Invention In such a conventional configuration, when the circuit board 4 is assembled into the display unit 3, the adjustment variable resistor 8 is connected to the display unit 3.
Stop boss 3! If the L or lip 3b is strongly hit, or if the adhesive 12 is not sufficiently dry, even if it is lightly hit, there is a problem that the adjustment variable resistor 8 will change by 1 and the adjustment of the housing will be deviated. Ta. It was a cabinet. Even when applying the fixing agent 12, it is difficult to control the amount applied in a fixed manner, and the work required to apply the adhesive is labor-intensive, resulting in an expensive product.

The present invention solves these problems, and provides a display device in which a circuit board can be incorporated into a display unit without any manual effort after adjusting the variable resistor for adjustment, without shifting the variable resistor for adjustment. The purpose is to

Means for Solving the Problems In order to solve the above problems, the present invention provides a circuit board on which a display and an adjustment variable resistor are attached.

This circuit board is provided with a holder that holds the display and is integrally formed with a ring-shaped or U-shaped protection portion that covers the periphery of the adjustment variable resistor.

Effect: According to the above structure, since the ring-shaped or U-shaped protection part protects the periphery of the variable resistor for adjustment, it can also be used when the circuit board is assembled into the display board unit.

Since the adjustable variable resistor hits the protective part first without hitting the stop boss or rib, there are no quality problems such as misalignment of the adjustable variable resistor and the housing, and it is integrated with the display board holder. Since it is molded, it is possible to reduce the number of man-hours and parts such as adhesives.

Embodiment One embodiment of the present invention will be described below with reference to FIGS. 1 to 3. As shown in FIG. 2, 21 is a cooking device main body, 22 is a lid for opening and closing the upper opening of the cooking device main body 21, and a display unit 23 for displaying and controlling the cooking status is fixed on the front side. Inside the display unit 23, a circuit board 24 is separated between the board cover 25 and the stop bosses 23& of the display unit 23, and is fixed with screws 2e. circuit board 24
Above is the display 27. A variable resistor 28 for adjustment and an electronic component 29 are soldered to each other, especially the display 27.
Since it is a component that can be seen from the outside, it is necessary to position it, and it is held by a holder 30, and the holder 30 is attached to the circuit board 24.
It is fixed by a fixing claw 30a.

FIG. 3 is an exploded perspective view of the display unit 23.1 The circuit board 24 is attached to the back side of the display unit 23 while looking at the solder surface 24 & the retaining boss 23 of the display unit 23! Align the hole position with L, further align the positioning lip 3b, fit the board cover 26 from above the circuit board 24, and fix it with the screws 26.

As shown in FIG. 1, the display 27 is mounted on the circuit board 24. Holder 30.
The installation of the adjusting variable resistor 28 and the electronic component 29 will be explained. First, attach the retainer 30 to the circuit board 24 with the fixing claws 30 &
firstly, hold down the display 27 from above with the feet 27.
Align & with the hole in the circuit board 24 and solder the bottom side. At this time.

Ring-shaped protector 3'Ob integrally molded with the holder 30
When fixing the holder 30 to the circuit board 24, the holder 30 is positioned around the adjustable variable resistor 28.

In the above configuration, the operation thereof will be explained. The adjustment variable resistor 28 is adjusted while being attached to one circuit board 24. After that, the circuit board 24 is assembled into the display unit 23 as shown in FIG.
The protective portion 30b of the holder 30 contacts the adjustment variable resistor 28, and no adjustment deviation occurs. Namely.

There is no need to apply a fixing agent or the like to the adjustable variable resistor 28.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, the holder for holding the display and the ring-shaped or U-shaped protection part for protecting the variable resistor for adjustment can be integrally molded. According to this structure, it is possible to eliminate the need for the adhesive that has conventionally been applied to the variable resistor for adjustment, and it is possible to reduce the number of man-hours for application. Even when a sticky agent is used, it is possible to prevent quality defects due to adjustment deviations that occur when the adhesive is not fixed.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of a circuit board of a display device showing an embodiment of the present invention, Fig. 2 is a partial sectional view of a cooking utensil using the same display device, and Fig. 3 is a view of a display unit of the display device. 4 is a partial sectional view of a cooking utensil using a conventional display device, FIG. 6 is an exploded perspective view of the same display unit,
FIG. 6 is an exploded perspective view of the same circuit board. 23...Display Uniso), 23! L...
Stop boss, 23b...Reply, 24...
Circuit board, 25... Board cover, 2T...
...Indicator, 28...Adjustment variable resistor, 30
・・・・・・Holding tool, 30 &・・・Fixing claw, 30
b...Ring-shaped protection part.

Claims (1)

[Claims] The circuit board on which the display and adjustment variable resistor are attached is
A display device for a cooker or the like to which a holder is attached which holds the display device and has a ring-shaped or U-shaped protection portion integrally formed to cover the periphery of the adjustment variable resistor.