JPH06313552A - Thermistor device for cookers - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent pollution caused by spills and to obtain a highly durable thermistor. A cylindrical metal holder 1 which is made of a thin metal plate and has open and closed upper and lower ends and which has an integrally formed or separately formed flange 4 projecting toward the center and which is blind in the periphery, and the metal holder. 1 is inserted from above into a metal cap body 9 which is fitted and fixed to the upper portion of 1 from above and a thermistor 20 is fixed to the back surface thereof, and a vertical through hole 5 formed at the center of the collar 4 of the metal holder 1. Is abutted against the collar 4 and is vertically installed to the thermistor 2
A fixed pipe 10 fixed to a blind body through the lead wire 24 of 0 and drawn from the lower end, and the metal holder 1
The metal holder 1 is fitted inside and the upper end is elastically attached to the lower surface of the metal cap body 9 and the lower end is elastically attached to the upper part of the fixed pipe 10.
And a coil spring 17 for moving the metal cap body 9 upward, and a concave groove 6 is formed in the inner peripheral portion of the collar 4 for the fixed pipe 10.
A thermistor device for a cooker, in which a ridge 16 slidably fitted in the groove 6 is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermistor device for cooking appliances. INDUSTRIAL APPLICABILITY The present invention can be used for similar products other than cookers.

[0002]

2. Description of the Related Art In the publicly known Japanese Utility Model Publication No. 60-140801, as shown in FIG. 12, a cylindrical metal holder a made of a thin metal plate and having upper and lower ends opened, and an upper portion of the metal holder a. A metal cap c fitted and fixed from above and a thermistor b on the back surface, a vertical fixed pipe e fixed to a fixed frame d and having an upper end fitted in the metal holder a, the fixed frame d and the metal holder. and a coil spring f provided above the metal holder a for moving the metal holder a upward. A part of the fixed pipe e is projected laterally to form a projection g, and the projection g is a slit h of the metal holder a. The structure engaged with the.

[0003]

In the known thermistor device for a cooker, the metal cap c has a detent structure by engagement of the protrusion g and the slit h, so that it is suitable for cooking Chinese food. Even if the cooker is violently moved up and down and left and right as in the case of the above, the metal cap body c does not rotate and the kink of the lead wire does not occur, but some problems have not been solved, so it is implemented. Not not. The first is that the engagement detent structure for the protrusion g and the slit h is an exposed structure. Since the protrusions g and the slits h have an exposed structure, when the juice from the spilled substance adheres, it adheres in a short period of time and the movement of the metal holder a becomes poor. Secondly, the coil spring f also has an exposed structure. Since the coil spring f also has an exposed structure, if the juice from the spillage adheres to the coil spring f, the spring action is not exerted. Thirdly, the lead wire is pulled out from the slit. Therefore, the lead wire may be heated more than necessary and broken. Fourth, the protrusion g and the slit h are engaged at only one point. Since the metal holder a is engaged at only one location on one side, the metal holder a may tilt and become immobile.

[0004]

Therefore, the present invention has a cylindrical shape which is made of a thin metal plate and is provided with a flange 4 of an integral structure or a separate structure which is open at the upper and lower ends and projects toward the center at the inner circumference. The periphery is a blind metal holder 1 and a metal cap body 9 in which the upper part of the metal holder 1 is fitted and fixed from above and the thermistor 20 is fixed to the back surface.
And a lead wire 2 of the thermistor 20 which is inserted from above into a vertical through hole 5 formed in the center of the collar 4 of the metal holder 1 and abuts against the collar 4 and hangs down.
A fixed pipe 10 is fixed to a blind main body through the periphery of which is drawn out from the lower end through 4, and an upper end is elastically attached to the lower surface of the metal cap body 9 and an upper end is attached to the upper part of the fixed pipe 10. It is composed of a coil spring 17 that is elastically attached to move the metal holder 1 and the metal cap body 9 upward, and a concave groove 6 is formed in the inner peripheral portion of the collar 4 and the concave groove 6 is formed in the fixed pipe 10.
This is a thermistor device for a cooker, in which a ridge 16 slidably fitted to is formed.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings, in which 1 is a metal holder made of a thin metal plate, and a large diameter portion 2 is formed in an upper portion and a lower end opening 3 is formed in a lower portion. The collar 4 is formed in a blind cylinder, and the collar 4 projecting from the inner circumference toward the center is integrally or separately attached at the lower position inside (FIG. 9).
It is provided in. A vertical through hole 5 is formed in the center of the collar 4, and two or three concave grooves 6 are formed in the collar 4.

On the upper part of the metal holder 1, recesses (or holes) 7 are provided at a few places, and a metal cap body 9 having a projection 8 that engages with the recesses 7 is covered. Protrusion 8 of metal cap 9
Has a structure in which it is elastically engaged when pushed from above, but does not disengage once it is engaged.

A fixing pipe 10 is fixed to the through hole 5 of the collar 4 from above so as to be fixed to the main body side before the metal cap 9 is covered. The pipe 10 is fixed to the main body later and its periphery is blind. The upper end of the pipe 10 is bulged to form an engaging groove 11, and the engaging groove 11 has a bottom 1 of a bowl-shaped sliding body 12.
The engaging hole 14 formed in 3 is engaged and caulked. The AA cross section of the collar 4 is as shown in FIG.
Individual concave grooves 6 are formed. When the fixed pipe 10 is inserted from above the through hole 5, the bulging portion 15 for forming the engaging groove 11 is brought into contact with the upper surface of the collar 4 and suspended. At a position below the bulging portion 15 on the upper portion of the pipe 10, two or three bulging vertical ridges 16 formed by bulging the pipe 10 outward as shown in FIG. And the vertical protrusion 16 is engaged with the groove 6 of the collar 4.

The lower end of the pipe 10 is fixed to the body, and the metal holder 1 is
Since the vertical protrusion 16 and the concave groove 6 are engaged with each other, they do not rotate.
Inside the metal holder 1, there is provided a coil spring 17 whose upper end is elastically attached to the lower surface of the metal cap body 9 and whose lower end is elastically attached to the bottom 13 of the bowl-shaped sliding body 12. Therefore, the metal cap body 9 moves upward together with the metal holder 1 by the elastic force of the coil spring 17, and is elastically attached to the lower surface of the cooker 18.

On the lower surface of the metal cap body 9, a fixing metal fitting 19 made of a thin metal plate is spot-welded. The fixing metal fitting 19 is formed of a storage portion 21 of the thermistor 20 and a lead wire fixing portion 23 provided with a slit 22 from the storage portion 21. The slit 22 is for preventing the lead wire fixing portion 23 from being crushed even if the lead wire fixing portion 23 is crushed.

Both the housing portion 21 and the lead wire fixing portion 23 are U-shaped (or U-shaped) when viewed from the direction a, and the glass-like thermistor 20 is attached to the tip of the lead wire 2.
4, the portion of the thermistor 20 is pushed into the storage portion 21, and only the portion of the lead wire fixing portion 23 is crushed to fix the lead wire 24. At this time, silicone grease (epoxy resin may be used in the storage portion 21.
It is sufficient if it can adjust the thermal response). The lead wire 24 may be coated with Teflon.

FIG. 9 shows an example in which the collar 4 is caulked, and 25 is a caulked portion. 10 and 11 show another embodiment, which differs from the previous example in that there is no large-diameter portion 2,
Also, the bowl-shaped sliding body 12 is integrated with the fixed pipe 10, and the other configurations are the same.

[0012]

The operation of the embodiment of the present invention will be described below. (How to make a practical product) The lower surface of the metal cap body 9 is abutted with the fixing metal fitting 19 and spot-welded, the storage part 21 of the fixing metal fitting 19 is filled with silicon grease, and the lead wire 24 to which the thermistor 20 is attached is attached to the tip. Hold the tip of the thermistor 20
Is pushed through the lead wire fixing portion 23 and then into the storage portion 21 to crush the lead wire fixing portion 23. Then, the crush of the lead wire fixing portion 23 does not reach the housing portion 21 because of the slit 22, and only the lead wire fixing portion 23 can be sufficiently crushed and fixed.

The metal holder 1 includes a collar 4 integrated type and a collar 4 separate type. The collar 4 integrated type is usually formed by shaving, and the collar 4 separate type is formed by a separate stamping process.
After fitting into the metal holder 1, the metal holder 1 is pressed by a press to form the caulked portion 25 and fasten it. Spot welding may be used instead of caulking.

Next, the fixed pipe 10 is inserted from the upper portion of the metal holder 1 and the coil spring 17 is fitted on the upper portion of the fixed pipe 10. Then, the lead wire 24 of the metal cap body 9 to which the thermistor 20 is fixed as described above is inserted into the fixed pipe 10 and pulled out from below, and the metal cap body 9 is fixed by covering the upper end of the metal holder 1. Complete by fixing to the body.

(How to use) Cooker 1 on a gas table such as a stove
When 8 is placed, the metal cap body 9 rising by the elastic force of the coil spring 17 comes into close contact with the bottom wall of the cooker 18. When cooking in this state, the thermistor 20 detects this and turns off the gas plug when the cooking is hollow-fired and abnormally heated, or when the tempura oil is heated above the limit and becomes dangerous. Prevent accidents.

Although the cooker 18 is violently moved up, down, front, back, left and right during cooking of Chinese food, even in that case, the metal holder 1 has a structure for preventing rotation between the concave groove 6 and the bulging vertical ridge 16. Since the metal holder 1 and the metal cap body 9 do not rotate and only repeat the vertical movement, the lead wire 24 of the thermistor 20 is not twisted and there is no risk of disconnection. In addition, since the spilled juice does not enter the inside from anywhere, it does not break down for a long time and maintains its quality.

[0017]

The above-mentioned known thermistor device for a cooker is
There are problems in that the engaging structure between the protrusion and the slit is an exposed structure, that the coil spring is also an exposed structure, and that the lead wire is pulled out from the slit. Since the engaging structure portion of the protrusion and the slit is an exposed structure, the juice of the spillage adheres, and the metal holder is stuck in a short time and the metal holder does not move. Since the coil spring f also has an exposed structure, similarly, if the juice from the spillage adheres, the spring mechanism will not work in a short period of time. Since the lead wire is pulled out from the slit, the lead wire is heated more than necessary and breaks. However, the present invention is a cylindrical metal holder 1 which is made of a thin metal plate and is provided with a flange 4 of an integral structure or a separate structure which is open at the upper and lower ends and projects toward the center on the inner circumference, and a blind blind periphery. The metal cap body 9 is fitted and fixed to the upper portion of the metal holder 1 from above and the thermistor 20 is fixed to the back surface, and the through hole 5 is formed in the center of the collar 4 of the metal holder 1 in the vertical direction. A fixed pipe 10 which is inserted from the bottom of the thermistor 20 and abuts against the collar 4 and is pulled out from the lower end through the lead wire 24 of the thermistor 20; The lower end of the metal cap body 9 is elastically attached to the upper surface of the fixed pipe 10, and the lower end thereof is composed of the metal holder 1 and the coil spring 17 for moving the metal cap body 9 upward. The concave groove 6 on the fixed pipe 10 Because was cooking instrument thermistor device formed a protrusion 16 which slides fitted in the concave groove 6, the metal holder 1, surrounding a thin metal plate made cylinder blind,
A flange 4 is provided inside, and a peripheral blind fixed pipe 10 is inserted into a through hole 5 formed in the center of the flange 4, and a lead wire 24 of a thermistor 20 is passed through the fixed pipe 10, and the lead wire 24 is the fixed pipe 10. I tried to pull it out from the bottom of
Even though the metal holder 1 is vertically moved, there is no possibility that the spilled juice will enter the inside to cause malfunction and the lead wire 24 will be heated to cause disconnection. Since the flange 4 and the fixed pipe 10 are provided with the sliding connection structure of the ridges 16 and the recessed groove 6 at a plurality of positions, the metal holder 1 and the metal cap body 9 can be smoothly moved up and down, and the rotation can be prevented, so that the lead can be prevented. Line 24 does not twist. In addition, since the above-mentioned sliding connection structure is surrounded by the metal holder 1, the juice from the spillage does not adhere to the sliding connection structure, and it works well for a long time. Further, the groove 6 is formed in the collar 4, and the fixed pipe 1 is formed.
Since each of the protrusions 16 is formed in the number 0, it is easier to manufacture as compared with the opposite structure.

[Brief description of drawings]

FIG. 1 is a side view of a first embodiment.

FIG. 2 is a vertical sectional side view of the first embodiment.

FIG. 3 is a vertical sectional side view of the metal cap body.

FIG. 4 is a vertical sectional side view of the metal holder.

FIG. 5 is a vertical sectional side view of the sliding body.

FIG. 6 is a vertical sectional side view of a fixed pipe.

FIG. 7 is a cross-sectional plan view taken along the line AA.

FIG. 8 is a cross-sectional plan view taken along line BB.

FIG. 9 is a vertical sectional side view of the second embodiment.

FIG. 10 is a vertical sectional side view of the third embodiment.

FIG. 11 is a cross-sectional plan view taken along the line CC.

FIG. 12 is a known example diagram.

[Explanation of symbols]

1 ... Metal holder, 2 ... Large diameter part, 3 ... Bottom opening, 4 ... Tsuba,
5 ... Through hole, 6 ... Recessed groove, 7 ... Recessed portion, 8 ... Protrusion, 9 ... Metal cap body, 10 ... Fixed pipe, 11 ... Engagement groove, 12 ... Sliding body, 13 ... Bottom, 14 ... Engagement hole, 15 ... Bulging part, 16 ... Vertical ridge, 17 ... Coil spring, 18 ... Cooker, 19 ... Fixing metal, 20 ... Thermistor, 21 ... Storage part, 22 ... Slit, 23 ... Lead wire fixing part, 24 ... Lead wire , 25 ... Caulking part.

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[Procedure amendment]

[Submission date] July 9, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 3]

[Figure 5]

[Figure 7]

[Figure 8]

[Figure 1]

[Fig. 2]

[Figure 4]

[Figure 6]

[Figure 9]

[Figure 10]

FIG. 11

[Fig. 12]

Front page continued (72) Inventor Yosei Kobayashi 1-17-17 Numakage, Urawa-shi, Saitama Mitsui Kinzoku Mining Co., Ltd.

Claims (1)

[Claims] 1. A cylindrical metal holder 1 which is made of a thin metal plate and which has upper and lower ends opened and which has an integrally or separately formed flange 4 projecting toward the center and which is blind in the periphery. From above, the metal cap body 9 is fitted and fixed to the upper portion of the metal holder 1 from above and the thermistor 20 is fixed to the back surface, and the through hole 5 formed in the center of the collar 4 of the metal holder 1 in the vertical direction. A fixed pipe 10 which is inserted and abuts against the collar 4 and is vertically extended through the lead wire 24 of the thermistor 20 and fixed around a blind body, and the upper end is fitted in the metal holder 1 The lower end of the metal cap body 9 is elastically attached and the lower end thereof is elastically attached to the upper part of the fixed pipe 10 and is composed of the metal holder 1 and the coil spring 17 for moving the metal cap body 9 upward. Is the concave groove 6 and the fixed pipe 10 is the concave groove 6 A thermistor device for a cooker, which is formed with a ridge 16 slidably fitted to the.