JPH0342487Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sensor mounting structure in a rice cooker or the like.

For example, in a rice cooker, when cooking rice using a predetermined heating pattern, the temperature of the contents of the inner pot is detected and controlled. In this case, a temperature detection sensor is brought into contact with the inner pot to detect the surface temperature of the inner pot.

Conventionally, the method of attaching this temperature sensor to a rice cooker was to attach screws 5 to the outer pot 50 as shown in FIG.
1 fixes the lower end of the approximately L-shaped leaf spring 52, fixes the sensor 1 to the upper end of this leaf spring 52, and passes this sensor 1 through the outer pot 50 to contact the circumferential side of the inner pot 53. let

However, this method has the problem that the sensor is fixed to the leaf spring with screws or rivets, and then the leaf spring with the sensor fixed is fixed to the outer pot of the rice cooker with screws or rivets, which is a complicated process. was.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a sensor mounting structure that can simplify the work by allowing the sensor to be mounted with a single touch.

An embodiment of the present invention will be described below.

As shown in FIG. 2, the temperature sensor 1 has a cap member 2 that comes into contact with an inner pot (not shown) of an automatic rice cooker and covers the U-shaped end of an insulating tube 3 bent into a U-shape. Flange member 2a of cap member 2
The sensor support member 4 supports the insulating tube 3
The cap member 2 is supported by being sandwiched between the left end surface in FIG. 2 and the holding surface 5a of the cap holding member 5. The U-shaped insulating tube 3 passes through the sensor supporting member 4, so that the insulating tube 3 is supported by the sensor supporting member 4.

Inside the insulating tube 3, the thermistor 6 connects the U-shaped tip, that is, the insulating tube 3 and the cap 2.
The lead 6a of this thermistor 6 is connected to the socket 7 through the insulating tube 3.

Overhanging portions 4a (Fig. 3) are provided at, for example, three locations on the outer periphery of the sensor support member 4, and the end of the sensor support tube 8 passes through a hole 4a' provided in the overhang portion 4a. By bending outward the portion 8a that penetrates the overhanging portion 4a at the end of the sensor support tube 8, the sensor support member 4 is slidably supported on the sensor support tube 8, and the sensor support member 4 is detached from the sensor support tube 8. This will be prevented. Further, a spring 9 is stretched between the bottom surface portion 8b of the sensor support cylinder 8 and the collar portion 4 of the sensor support member 4, and the sensor support member 4 is biased toward the left in FIG. This spring 9 provides contact pressure of the sensor 1 to the inner pot. Furthermore, inward cut-out portions 8 are provided at, for example, three locations on the cylindrical portion of the sensor support tube 8.
c is provided. Further, the cap holding member 5 is made of an elastic material, and the end portion 5b having the bent portion 5c passes through the hole 4'' of the overhanging portion 4a of the sensor support member 4, and the end portion 5b of the cap holding member 5 is formed of an elastic material.
The outwardly bent portion 5c engages with the protruding portion 4a, and the cap pressing member 5 presses the sensor supporting member 4.
Supported by

On the other hand, there is a hole 50 through which the sensor 1 passes through the peripheral side of the outer pot 50, which is a fixing member to which the sensor 1 is attached.
a, and projecting portions 50b are provided at, for example, three locations along the inner periphery of the hole 50a in the opposite direction from the inner pot side, that is, toward the right in FIG. A hole 50b' is provided in each of the projecting portions 50b.

The temperature sensor 1 configured as described above is attached to the outer pot 5.
0, the inner cylindrical surface of the sensor support cylinder 8 comes into contact with the overhanging part 50b of the outer pot 50, the sensor support cylinder 8 is fitted into the overhang part 50b of the outer pot 50, and the sensor support cylinder 8 is cut and raised. Push the sensor support tube 8 toward the left in FIG. 2 so that the portion 8c fits into the hole 50b' provided in the overhanging portion 50b. The cut-out portion 8c is the hole 50 of the overhanging portion 50b.
By fitting into b', the sensor 1 can be attached to the outer pot 50 with one touch.

To explain how to assemble the sensor 1, as shown in FIG. 4, pass the U-shaped insulating tube 3 into which the thermistor 6 is inserted together with the lead 6a through the sensor support tube 8, then pass the spring 9 through it.
Furthermore, the sensor support member 4 is passed through. The end 8a of the sensor support cylinder 8 is passed through the hole 4a' of the sensor support member 4, and the end 8a is bent as described above.
Next, the cap member 2 is placed over the U-shaped end of the insulating tube 3, and the cap holding member 5 is fitted onto the cap member 2, and the bent portion 5c of the cap holding member 5 is attached to the sensor supporting member as described above. 4 to complete the assembly of the sensor 1.

When the inner pot 60 is pushed into the outer pot 50 to which the sensor 1 is attached as described above in the direction of arrow X as shown in FIG. The sensor support member 4 and the cap presser member 5 can be moved rightward in FIG. 5 to set the inner pot 60 in a predetermined position.
At this time, the front surface of the cap member 2 is moved along the side surface of the inner pot 60, and due to the restoring force of the spring 9,
It can elastically contact the side surface well and improve temperature measurement characteristics.

As explained above, in the present invention, the support member that supports the sensor is biased by a spring to support the support member so as to be able to reciprocate, and the sensor support tube has a cut-out portion, and the fixing member has a hole through which the sensor passes. and an overhanging part having an opening provided in the member, and the sensor is attached to the fixed member by fitting the cut-out part of the sensor support cylinder into the opening of the overhanging part, The sensor can be attached to the fixing member with a single touch, simplifying the work.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing a conventional example of a sensor mounting structure in a rice cooker, Fig. 2 is a sectional view showing an embodiment of the sensor mounting structure of the present invention, and Fig. 3 is a line A-A in Fig. 2. 4 is an exploded side view showing how to assemble the sensor, and FIG. 5 is a sectional view showing the relationship between the sensor and the inner pot of this invention. 1...Sensor, 4...Sensor support member, 8
...Sensor support tube, 8c...Cut-out portion, 9...
...Spring, 50... Outer pot, 50a... Hole, 50b...
...Protruding portion, 50b'...Opening portion.

Claims (1)

[Claims for Utility Model Registration] A support member that supports a sensor that detects temperature, etc., and a sensor that supports the support member in a slidable manner by biasing it with a spring, and that has a cut-out portion in the cylindrical portion. The sensor support tube is provided with a support tube and an overhang portion provided along the periphery of a hole provided in the fixing member so that the sensor passes through in the direction of the detected object, and has an opening portion, and the sensor support tube is cut out. The sensor is attached to the fixing member by fitting the sensor support tube into the overhanging part of the fixing member such that the sensor support tube fits into the opening of the overhanging part of the fixing member. structure.