JPH1118938A - Sensor switch and heating cooking equipment such as japanese hotchpotch warmer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sensor switch stably operated in which dust or water is prevented from being penetrated to the inner part through the clearance between a sheath body and an operation working body provided in its inner part. SOLUTION: This sensor switch comprises an annular sheathing body 2 opened in the upper surface, an operation working body 6 having an upper operation part 3 protruded into the sheathing body 2 through the opening in such a manner as to be operable and a lower switch operating part 5, a spring 7 provided within the sheathing body 2 to energize the operation working body 6 upward, and a switch 8 operated by the switch operating part 5 of the operation working body 6. In this sensor switch, a cover 12 is provided so as to cover the clearance between the opening edge of the sheathing body 2 and the circumferential part of the operation part 3 of the operation working body 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a configuration of a sensor switch used for detecting the attachment / detachment of a cooking vessel in a heating appliance such as an oden warmer.

[0002]

2. Description of the Related Art For example, a convenience store is provided with an oden warmer, and an oden warmed by the oden warmer is provided to a customer. This conventional oden warmer is configured such that a cooking container for accommodating an oden material is removably provided on an apparatus body having a built-in heater.

[0003] Recently, in such an oden warmer, when the cooking container is removed even when the operation switch is in the ON state, the sensor switch is turned on for safety reasons and to avoid wasteful use of electricity. Is considered to automatically stop the heating operation.

FIG. 2 shows an example of the arrangement of sensor switches in such an Oden warmer.

[0005] Reference numeral 30 denotes an apparatus main body frame, in which a heating plate 32 is provided at the center thereof, and a cooking container 34 for accommodating oden on the surface of the heating plate 32 is placed. Reference numeral 35 denotes an equipment exterior body, which is provided on the equipment body frame 30 so as to cover the outer periphery of the cooking container 34. And
The sensor switch 40 is provided on the cooking device 3
4 is provided so as to face the bottom surface.

As shown in FIG. 3, the sensor switch 40 is provided with an annular exterior body 42 having an open upper surface, and provided inside the exterior body 42 so as to protrude from the opening so that an upper operation unit 43 can be operated. An operation operation body 47 serving as a switch operation section 45, a spring 48 provided in the exterior body 42 for urging the operation operation body 47 upward, and a switch 50 operated by the switch operation section 45 of the operation operation body 47 Become.

[0007] When the exterior body 42 is attached to the device body frame 30 side, the operating member 47 and the spring 48 are integrally fixed to the device body frame 30 side.
0 is separately fixed to the device body frame 30 side.

The sensor switch 40 is connected to the cooking container 34.
Is mounted, and when the bottom surface pushes the operation unit 43, the operation operation body 47 descends, so that the switch operation unit 45
Presses the lever 51 of the switch 50 to turn it on,
When the cooking container 34 is removed and the operation unit 43 is depressed and the operation unit 47 is lifted, the switch operation unit 4
5 turns off the switch 50 by separating from the lever 51.

[0009]

However, the configuration of the sensor switch 40 as described above has the following problems.

That is, when the operating member 47 is lowered by pressing the operating portion 43, a gap is formed between the peripheral portion of the operating member 47 and the opening edge 41 of the exterior body 42. There is a risk that water may enter, and when the dust or water reaches the switch 50 side, the switch may malfunction.

In order to improve the sensor accuracy, the operation operating body 47 is required.
It is necessary to take a large operation stroke. However, in a configuration in which the operation stroke is made large, when the operation / operation body 47 is lowered, the gap is further increased, and the above-mentioned problem is further increased.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sensor switch which can prevent dust and water from entering and can take a large operation stroke.

[0013]

According to the first aspect of the present invention, an annular exterior body having an open upper surface, and an upper operation unit is provided in the exterior body so as to be operably protruded from the opening. A sensor that includes an operating member having a lower portion as a switch operating portion, a spring provided in the exterior body for urging the operating member upward, and a switch operated by the switch operating portion of the operating member. In the switch, a cover is provided so as to cover a gap between an opening edge of the exterior body and a peripheral portion of the operation section of the operation / actuation body.

According to the above construction, the cover covers the gap between the peripheral edge of the opening of the exterior body and the peripheral portion of the operating portion of the operating member, and prevents water and dust from entering the inside from the gap. Is done. In particular, even when the operating section is pushed down to open the gap, water and dust do not enter, and therefore, the operating stroke is increased to increase the switch accuracy and the opening degree of the gap is increased. Even so (the invention according to claim 4), there is no problem.

Further, the cover is annular, the operating portion protrudes from the cover, and the inner peripheral edge of the cover comes into contact with the peripheral surface of the projecting portion of the operating portion (the invention according to claim 2). Since the vertical movement of the part is performed in a state where the inner peripheral edge of the cover is in contact with the peripheral surface of the protruding part of the operating part,
There is no danger of water or refuse entering from that area.

Further, the outer peripheral edge of the annular cover is located outside the outer peripheral edge of the outer package (the invention according to claim 3), so that the surface to which the outer package is attached and the outer peripheral edge of the outer package are provided. Water is prevented from entering from the abutting portion.

This sensor switch is suitably used in a cooking appliance such as an oden warmer so as to detect the attachment / detachment of a cooking container (the invention according to claim 5).

[0018]

FIG. 1 is a sectional view showing a configuration for mounting a sensor switch on an oden warmer. Since the entire configuration of the Oden warmer is the same as that of the conventional example, its description is omitted.

The sensor switch 1 includes an annular exterior body 2,
An operation operating body 6 provided in the exterior body 2 so as to protrude from the opening 4 so that the upper operation section 3 can be operated, and a lower portion as a switch operation section 5, and an operation operation body 6 provided in the exterior body 2 and , And a switch 8 operated by the switch operating section 5 of the operation operating body 7.
The operating member 6 is configured by connecting the operating portion 3 side and the switch operating portion 5 side, and the operating portion 3 protrudes higher than a conventional product, thereby taking a large operating stroke. A switch operating piece 9 for operating the switch 8 is attached to the switch operating section 5 side.

An annular resin cover 12 is attached so as to cover a gap between the periphery of the opening 4 of the exterior body 2 and the periphery of the operation section 3 of the operation / actuation body 6.

The resin cover 12 is provided with an annular holding plate 1.
At 3, the mounting edge 15 is mounted in a state of being pressed onto the device body frame 16, and the outer peripheral edge 15 a is located outside the outer peripheral edge 2 a of the exterior body 2. The inner peripheral edge 15b of the resin cover 12 is in contact with the peripheral surface of the upper column 3a of the operation unit 3.

Since the resin cover 12 is attached to the sensor switch 1 as described above, first, the gap between the peripheral edge of the opening of the exterior body 2 and the periphery of the operation section 3 of the operation / operation body 6 is covered. Water and dust are prevented from entering the inside from the gap. In particular, even when the operation unit 3 is pushed down to open the gap, water and dust do not enter, so that the operation stroke is increased as described above to increase the degree of opening of the gap. There is no hindrance.

The up-and-down movement of the operation unit 3 is also controlled by the resin cover 1.
2 is performed in a state where the inner peripheral edge 15b is in contact with the peripheral surface of the upper pillar portion 3a, so that intrusion of water and dust from that portion is also prevented.

Further, since the outer peripheral edge 15a of the resin cover 12 is located outside the outer peripheral edge 2a of the exterior body 2, the outer peripheral edge 15a of the resin main body frame 16 and the outer peripheral edge 2a of the exterior body 2 can be separated from each other. Water intrusion is also prevented.

[0025]

According to the present invention, it is possible to prevent dust and water from entering the inside from the gap between the exterior body and the operating member provided therein, thereby obtaining a sensor switch which can be operated stably. .

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a mounting structure of a sensor switch according to the present invention.

FIG. 2 is a cross-sectional view showing a mounting configuration of a conventional sensor switch.

FIG. 3 is a partially enlarged cross-sectional view showing a conventional sensor switch mounting configuration.

[Explanation of symbols]

 2 exterior body 3 operation section 5 switch operation section 6 operation operation body 7 spring 8 switch 12 cover

Claims (5)

[Claims] 1. An outer casing having an open upper surface, an operating body provided in the outer body such that an upper operating section is operably protruded from the opening, and a lower section having a switch operating section, and the outer casing. In a sensor switch including a spring provided in a body and biasing the operation operation body upward, and a switch operated by the switch operation portion of the operation operation body, the sensor includes an opening peripheral edge of the exterior body and the operation operation body. A sensor switch, wherein a cover is provided so as to cover a gap with a peripheral portion of an operation unit. 2. The cover according to claim 1, wherein the cover has an annular shape, the operation portion protrudes from the cover, and an inner peripheral edge of the cover contacts a peripheral surface of a protruding portion of the operation portion.
Sensor switch as described. 3. An outer peripheral edge of the annular cover is located outside an outer peripheral edge of the exterior body.
Sensor switch as described. 4. The sensor switch according to claim 1, wherein a stroke of the operating member is designed to be large. 5. In a cooking device in which a cooking container for storing an object to be cooked is removably mounted on a device body side, the sensor switch according to claim 1 to 4 detects that the cooking container is attached or detached. A cooking device, such as an oden warmer, which is provided.