JPS634882Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a leaf-type cooking menu display device equipped with a reference position detection switch for a display card.

In order to increase the number of cooking menus displayed and to facilitate selection of cooking menus, cooking appliances equipped with leaf-type cooking menu display devices have been developed. A leaf-type cooking menu display device has a large number of display cards with cooking menus written on them, which are swingably mounted around a disk-shaped rotating member, and the display cards are sequentially reversed by rotating the rotating member. However, the content of the cooking menu displayed at the display position can be changed. Usually, a pulse motor is used to drive the rotating member, but this rotational movement is controlled by detecting a certain arbitrary reference position and counting the number of pulses from this reference position. There is.

Conventionally, the reference position was detected by providing a protrusion 12 on the upper side of the display card 11 and bringing the protrusion 12 into contact with a leaf spring type switch (feather switch) 13, as shown in FIG. There is. However, with this structure, the display card 11 is only stopped by the upper stopper 14, and when the door of the cooker is opened or closed, the display card 11 may shake due to the impact, and the switch 13 itself may be affected by the impact. This may cause contact chattering.

The present invention has been made with these points in mind, and it is an object of the present invention to provide a leaf-type cooking menu display device that can prevent the contacts of the reference position detection switch from chattering even when vibrations or impulses are applied. purpose.

The present invention aims to prevent chattering by providing a rotating member with a contact portion with the reference position detection switch.

Further, the present invention prevents contact chattering by using a switch type, such as a micro switch, as the reference position detection switch.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a front view of the cooking device according to the present invention.
The cooking device 10 includes a cabinet 11 in which a heater, a magnetron, etc. are installed, a heating chamber door 12, and a keyboard 13 with an array of operation keys. The keyboard 13 has a cooking menu display window 14
As shown in FIG. 3, a leaf-type cooking menu display device 15 is disposed on the rear side of this cooking menu display window 14. The leaf-type cooking menu display device 15 includes a plurality of display cards 16 on which cooking menus are written, which are swingably mounted around a disk-shaped rotating member 17.
By rotating 7, the display cards 16 are sequentially reversed, and the contents of the cooking menu displayed on the display window 14 can be changed. This rotating member 17
The rotation is performed by a step motor 19 via gears 18a and 18b.

A protrusion 20 is provided on the side surface of the rotating member 17, and a reference position detection switch 21 is disposed at a position abutting the protrusion 20. FIG. 4 is a partial front view seen from the direction of arrow A in FIG. 3, showing the arrangement relationship between the protrusion 20 provided on the side surface of the rotating member 17 and the reference position detection switch 21. As this reference position detection switch 21, a micro switch is used.

Next, the operation and effects of this embodiment having such a configuration will be explained.

When operation keys arranged on the keyboard 13 are pressed to set cooking operation conditions, the pulse motor 19 rotates, rotationally driving the rotating member 17 and swinging the display card 16 to select it. In this case, the rotational position of the rotating member 17 can be controlled by counting the number of pulses given to the pulse motor 19, but this counting can be done by bringing the protrusion 20 into contact with the reference position detection switch 21. This is done after detecting the

In this embodiment, the reference position detection switch 2
The protrusion 20 that comes into contact with the reference position detection switch 2 is provided on the side surface of the rotating member 17, which is unlikely to move due to impact or the like.
No vibration is given to 1. Further, since the reference position detection switch 21 also uses a micro switch, the contact points are not exposed, so there are few contact failures, and the switch 21 is not bent like a leaf spring during assembly. In addition, the contacts can withstand vibration and shock. Therefore, chattering of the contacts of the reference position detection switch 21 is prevented, and the reliability of reference position detection is improved.

In this embodiment, an example is shown in which the contact portion with the reference position detection switch is a convex projection, but
This contact portion may have a concave shape. Further, although an example has been shown in which the contact portion is provided on the side surface of the rotating member, it may be provided anywhere on the rotating member (for example, it may be provided on the outer peripheral portion of the rotating member).

As described above, according to the present invention, it is possible to improve the operational reliability and lifespan of the leaf-type cooking menu display device.

[Brief explanation of the drawing]

FIG. 1 is a partial front view showing the structure of a conventional leaf-type cooking menu display device, FIG. 2 is a front view of a cooking appliance according to the present invention, and FIG. 3 is a side sectional view of a leaf-type cooking menu display device according to the present invention. , Figure 4 is the third
It is a partial front view seen from the direction of arrow A in the figure. 15...Leaf-type cooking menu display device, 16
... Display card, 17 ... Rotating member, 19 ... Pulse motor, 20 ... Protrusion, 21 ... Reference position detection switch.

Claims (1)

[Scope of utility model registration request] A large number of display cards with cooking menus written on them are swingably attached around a disc-shaped rotating member.
By rotating this rotating member, the display cards are sequentially reversed to change the content of the cooking menu displayed at the display position, and the reference position of the display card is detected by a detection switch. A leaf-type cooking menu display device, wherein a contact portion with the reference position detection switch is provided on the rotating member and has a convex shape.