JPH10332492A - Fixing device for sensor element of temperature detecting device for cooking utensil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve the prevention of the breaking of a lead wire, the prevention of the removal of a sensor element, and excellent contact of the sensor element with the heat receiving surface. SOLUTION: In this fixing device, a fixing metal fitting 13 of a sensor element 18 is attached to the inside of the upper part of a metal holder 1 in elastic contact with the bottom surface of a cooking utensil. The fixing metal fitting 13 is formed in a disc shape having the approximately horizontal upper part. A containing concave part 16, which is concaved downward for the central part of the disc 14, is formed. A lead-wire fixing tube 17, which is protruding downward to the center of the containing concave part 16, is continuously formed. Then, the sensor element 18 is laterally contained in the containing concave part 16. The upper end of a lead wire 19 is connected to the side surface of the sensor element 18. The led wire 19 is once bent to the side and withdrawn downward from a central lead-wire fixing tube 17. A concave part 22 is formed so as to hold the lead-wire fixing tube at both sides. Thus, the lead wire 19 is fixed to the lead-wire fixing tube 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for fixing a sensor element of a temperature detecting device for cookware. The present invention can be used for other than cookware.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 1, a metal fitting e for attaching a sensor element d fixed to the tip of a lead wire c is welded to the lower surface side of a metal cap b elastically contacting the bottom of a cooking utensil a. The sensor element d is fixed laterally to the fixing bracket e, and the metal cap b is fitted into the upper end opening of the cylindrical metal holder f. The upper end of the fixed support tube g is vertically movably inserted, and a pan h that moves up and down inside the metal holder f is fixed to the upper end of the fixed support tube g. The pan h and the metal cap b A temperature detecting device for cookware provided with a coil spring i between them is known,
It is described in JP-A-5-123249. The lead wire of the sensor element for cookware is formed by bending a so-called dimet wire of an alloy of iron and nickel at a bent portion j to hold the shape. Also, as shown in FIG. 2, a metal cap b (heat collecting metal member) is provided on the bottom of the cooking utensil elastically from below, and a sensor element d fixed to the tip of a lead wire c is provided on the metal cap b. A fixing metal fitting e to be attached is fixed, a vertical sensor element d is inserted into the fixing metal fitting e and fixed with an adhesive, and the metal cap b is removably fitted into an upper end opening of a cylindrical metal holder f. The upper end of a fixed support tube g perpendicular to the center of the tray h fitted to the lower part of the metal holder f is fixed, and a coil spring i is provided between the tray h and the flange k fitted to the upper part. Cooker temperature detectors are also known.
Similar to the former, the lead wire c of the sensor element for cookware is provided substantially perpendicularly to what is called an iron-nickel alloy dimet wire.

[0003]

The problems to be solved by the present application are disconnection of a lead wire, detachment of a sensor element, and contact of a sensor element with a heat receiving surface. The one in FIG.
The sensor element d is horizontal, but the lead wire c is bent at the bent part j to keep the shape, so if the cord is hooked during transportation of the product and the lower end of the lead wire is strongly pulled, The bent portion j composed of a dimet wire made of an alloy of iron and nickel may be disconnected. Further, although the sensor element d is designed to contact the heat receiving surface as much as possible, there is a problem in this point because the sensor element d is not configured to be elastically biased to contact the heat receiving surface. In FIG. 2, since there is no bent portion j, there is little fear of disconnection at the bent portion j. However, a vertical sensor element d is inserted from below into a vertical hole provided in the fixing bracket e. The structure is fixed with an adhesive, and there is a concern that the sensor element d may come off. In addition, since the sensor element d is a vertical sensor element, the heat receiving effect is low.

[0004]

According to the present invention, there is provided a sensor device having a sensor element fixing bracket mounted inside a metal holder elastically contacting a bottom surface of a cooking appliance. The upper part is formed in a substantially horizontal disk, a storage recess is formed in the center of the disk, which is recessed downward, and a lead wire fixing cylinder projecting downward at the center of the storage recess is formed continuously. The sensor element is housed laterally in the housing recess, the upper end of a lead wire is connected to the side surface of the sensor element, and the lead wire is once bent to the side and then lower than the center of the lead wire fixing cylinder. The lead wire is fixed to the sensor element of the temperature detecting device for cooker in which the lead wire is fixed to the lead wire fixing tube by forming a concave portion by sandwiching the lead wire fixing tube from both sides. In the above, the storage recess is a fixing device for a sensor element of a temperature detecting device for a cooking appliance having a horizontally long shape. In the above, the sensor element fixing bracket is a sensor element fixing device of a cooker temperature detecting device formed by drawing a thin metal plate. Further, in the above, the sensor element fixing bracket is a fixing device for a sensor element of a temperature detecting device for a cooking appliance, which is shaped to be elastically fitted when pushed into the metal holder. Further, in the above, the sensor element fixing device of the cooker temperature detecting device is filled with an adhesive such as silicon grease or epoxy resin in the housing recess of the sensor element fixing bracket.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a metal holder made of a thin drawn thin metal plate, the upper surface 2 is closed, and the lower end 3 is open. The upper surface 2
As shown in FIG. 1, a metal cap body made of a separate thin metal plate may be covered. A step portion 4 is formed at an upper and lower intermediate position of the metal holder 1 made of a thin metal plate, and a lower portion of the step portion 4 is formed as a large diameter portion 5. The large diameter portion 5 slightly below the step portion 4 is formed with a concave portion 6 formed by pressing the concave portion 3 from three directions as shown in FIG.
A flange 7 is fitted between the recess 6 and the step 4. Since the step 4 is a means for locking the flange 7, it may not be provided.

The flange 7 has the structure shown in FIGS. 3 and 6 and is formed by sheet metal processing in the embodiment, but may be formed by cutting. The flange 7 has a square hole 8 at the center thereof. When the flange 7 is pressed into the metal holder 1 from the lower end 3, it is fitted between the concave portion 6 and the step portion 4. A vertical fixed support cylinder 9 is inserted into the square hole 8 so as to be vertically slidable. The upper end of the fixed support cylinder 9 protrudes above the flange 7, and the tray 10 is formed integrally therewith.
The pan 10 is in sliding contact with the inner wall of the metal holder 1,
In contrast, the tray 10 is fixed, and the metal holder 1 moves up and down. The tray 10 may be formed separately and fixed to the upper end of the fixed support cylinder 9. An upper portion of the fixed support tube 9 from the upper and lower middle portions is a square tube 11, which is fitted into the square hole 8 to prevent rotation. Between the tray 10 and the upper surface of the metal holder 1,
A coil spring 12 is provided. Instead of the rotation stop by the square tube 11 and the square hole 8, a rotation stop having an uneven strip formed between the tray 10 and the metal holder 1 may be used. At that time, the square tube 11 and the square hole 8 become unnecessary.

FIGS. 8 to 11 show a first embodiment of the sensor element fixing bracket 13. FIG. Sensor element fixing bracket 1
Numeral 3 is formed by drawing a thin metal plate, and has a substantially mushroom-shaped side surface, a substantially horizontal disk 14 at the top, and a circumference of the disk 14 bent downward in an arc shape. A joint 15 is formed, and a storage recess 16 that is recessed downward is formed in the center of the disk 14. The storage recess 16 may be of any shape, but the first embodiment is of an oval type,
The lead wire fixing cylinder 17 projecting downward at the center in the longitudinal direction of
The sensor element 18 is housed in the housing recess 16 with the sensor element 18 set sideways, and a lead wire 1 of a dimet wire made of an alloy of iron and nickel is provided on a side surface of the sensor element 18.
9, the lead wire 19 forms a curved portion 20,
The sensor element 18 is fixed by pulling out from the lead wire fixing cylinder 17 and filling the housing recess 16 with an adhesive 21 such as silicone grease or epoxy resin which is thermally responsive.
After being pulled out as shown in FIG. 11, the recessed portion 22 is formed by sandwiching the lead wire fixing cylinder 17 from both sides, and the lead wire 19 and the sensor element fixing bracket 13 are fixed.

The sensor element 18 thus formed
Lead wire 19 is inserted into recess 2
2, the elastically upward movement is performed with the fixing portion of the concave portion 22 as a fulcrum, and elastically contacts the heat receiving surface of the metal holder 1. This action is based on silicone grease,
Even if it is fixed with an adhesive 21 such as epoxy resin, there is no change because it does not solidify in the case of silicon grease. Especially,
As shown in FIG. 13, when the sensor element 18 is attached so as to protrude slightly upward, the effect is great.

The sensor element fixing bracket 13 to which the sensor element 18 is fixed as described above is attached to the lower end 3 of the metal holder 1.
When the disk is inserted and pressed in, the joining portion 15 bent downward in an arc shape is formed around the disk 14, so that it is press-fitted while being somewhat reduced and stored and fixed in the metal holder 1. In this case, even if the lower end of the lead wire 19 is inadvertently strongly pulled, for example, while the product is being transported, the fixed portion of the sensor element 18 of the lead wire 19 of the dimet wire made of an alloy of iron and nickel is bonded. Since it is fixed with agent 21,
There is no fear of disconnection. Further, since the concave portion 22 is formed by sandwiching the lead wire fixing cylinder 17 from both sides and the lead wire 19 is fixed, the lead wire 19 is not pulled out. 12 and FIG.
The joint 15 has a petal shape.

[0010]

Next, the operation will be described. According to the present invention, a lead wire 19 of a gimette wire made of an alloy of iron and nickel is fixed to the side surface of the sensor element 18 in the horizontal direction, the sensor element 18 is stored in the storage recess 16 in the horizontal direction, and the lead wire 19 is 11 and inserted downward as shown in FIG. 11, and then pulled out below the lead wire fixing cylinder 17, and heat-responsive silicone grease is inserted into the storage recess 16 of the disk 14 above the sensor element fixing bracket 13. An adhesive 21 such as epoxy resin is filled and fixed. The lead wire 19 of the sensor element 18 thus fixed is connected to the lead wire fixing cylinder 1.
7 is fixed by the concave portion 22, so that the fixing portion of the concave portion 22 serves as a fulcrum to move upward elastically. Even if this action is fixed with silicon grease, the action does not change because the silicon grease does not solidify. In particular, when the sensor element 18 is mounted so as to protrude slightly upward as shown in FIG. 13, the effect is great.

When the sensor element fixing bracket 13 to which the sensor element 18 is fixed is inserted from the lower end 3 of the metal holder 1 and pushed in, the joint 15 bent downward in an arc around the disk 14 is formed. It is press-fitted while being somewhat reduced, and is fixed in the metal holder 1. Next, the coil spring 12 is inserted into the metal holder 1, and the lower end of the coil spring 12 is supported by the receiving tray 10 at the upper end of the fixed support cylinder 9. Assembling is completed when it is fitted between and the step portion 4.

The cooker temperature detector thus assembled is usually mounted at the center of a gas stove, and the lead wire 19 is connected to an automatic opening / closing device for the gas stove so that the cooker is overheated abnormally. When, sensor element 1
8 detects this and automatically closes the valve of the gas stove. However, in the present application, the sensor element fixing bracket 13 is formed by drawing a thin metal plate and is easy to manufacture. The metal fitting 13 is a mushroom type, in which a storage recess 16 is formed in a disk 14 thereof, and the storage recess 16 is filled with an adhesive 21 such as silicon grease or epoxy resin, which is responsive to heat, and the sensor element 18 is turned sideways. Since it is fixed, it is excellent in heat transfer, and the lead wire 19 of the dimet wire made of an alloy of iron and nickel is connected to the lead wire fixing cylinder 17 at the center.
Since the lead wire 19 is fixed downward by pulling the lead wire fixing cylinder 17 from both sides to form a concave portion 22, there is no disconnection or pulling even if the lead wire 19 is strongly pulled.

[0013]

The objects of the present application are to break the lead wire, to disconnect the sensor element, and to contact the heat receiving surface of the sensor element. In FIG. 1, the sensor element is in the horizontal direction, but the lead wire is bent at the bent portion j to maintain the shape. When the wire is strongly pulled, the bent portion j formed of a dimet wire made of an alloy of iron and nickel may be disconnected. In addition, although the sensor element is designed to contact the heat receiving surface as much as possible, there is a problem in this point because the sensor element is not configured to be elastically biased to contact the heat receiving surface. In FIG. 2, since there is no bent part j, there is little fear of disconnection at the bent part j.
However, since the vertical sensor element d is inserted into the vertical hole provided in the fixing bracket e from below and fixed with an adhesive, there is a concern that the sensor element d may come off. Therefore, the heat receiving effect is low. However,
The present invention is a device in which a fixing bracket 13 for a sensor element 18 is mounted inside a metal holder 1 elastically abutting on a bottom surface of a cooker.
The upper part is formed in a substantially horizontal disk 14, a storage recess 16 is formed in the center of the disk 14, and is recessed downward. The lead wire fixing cylinder 1 protrudes downward into the center of the storage recess 16.
7 are continuously formed, the sensor element 18 is laterally housed in the housing recess 16, and the upper end of a lead wire 19 is connected to the side surface of the sensor element 18, and the lead wire 19 is once bent laterally. After that, the cooker is pulled out from the center of the lead wire fixing cylinder 17 to form a concave portion 22 by sandwiching the lead wire fixing cylinder 17 from both sides and fixing the lead wire 19 to the lead wire fixing cylinder 17. The sensor element 18 is used as a fixing device for the sensor element of the temperature detecting device, so that the sensor element 18 is accommodated in the accommodating recess 16 sideways, and the upper end of a lead wire 19 is connected to the side surface of the sensor element 18. The wire 19 is once bent to the side and then pulled out below the lead wire fixing tube 17, and the lead wire fixing tube 17 is sandwiched from both sides to form a concave portion 22 to fix the lead wire 19. Therefore, the sensor element 18 is configured to move up and down resiliently with the concave portion 22 as a fulcrum, so that the sensor element 18 comes into close contact with the lower surface of the cap body, and even if the cord is forcibly pulled, there is a possibility of disconnection or pulling out. Has no effect at all. Further, in the above description, since the storage recess 16 is a fixing device for the sensor element of the cooking utensil temperature detecting device having a horizontally long shape, the sensor element 18 is stably stored. Further, in the above, the sensor element fixing bracket 13 is a fixing device for the sensor element of the temperature detecting device for a cooker formed by drawing of a thin metal plate, so that it is easy to manufacture. In the above,
The sensor element fixing bracket 13 is a device for fixing the sensor element of the temperature detecting device for a cooker, which has a shape that is elastically fitted when pushed into the metal holder 1 and is easy to manufacture. Further, in the above, the sensor element fixing device of the cookware temperature detecting device in which the adhesive 21 such as silicon grease or epoxy resin is filled in the storage recess 16 of the sensor element fixing bracket 13. Can be fixed securely.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a known example.

FIG. 2 is a longitudinal side view of a known example.

FIG. 3 is an overall vertical side view of the temperature detecting device.

FIG. 4 is a sectional view taken along line BB of FIG. 5;

FIG. 5 is a sectional view of a metal holder.

FIG. 6 is a bottom view of a collar.

FIG. 7 is a bottom view of the fixed support cylinder.

FIG. 8 is a plan view of a sensor element fixing bracket.

FIG. 9 is a bottom view of the sensor element fixing bracket.

FIG. 10 is a cross-sectional view of the sensor element fixing bracket taken along line AA.

FIG. 11 is an attached state diagram of a sensor element fixing bracket.

FIG. 12 is a plan view of a second embodiment of the sensor element fixing bracket.

FIG. 13 is a side view of FIG. 12;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Metal holder, 2 ... Top surface, 3 ... Lower end, 4 ... Step part, 5 ...
Large-diameter portion, 6 recess, 7 flange, 8 square hole, 9 fixed support cylinder, 10 tray, 11 square prism, 12 coil spring, 13
... Sensor element fixing bracket, 14 ... Disc, 15 ... Junction,
16: storage recess, 17: lead wire fixing cylinder, 18: sensor element, 19: lead wire, 20: bent portion, 21: adhesive, 22: concave portion.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yosei Kobayashi 1-17-17 Numakage, Urawa City, Saitama Ichinuma 1-17-17 Mitsui Kinzoku Mining Co., Ltd. Thermistor Division, Parts Processing Division

Claims (5)

[Claims] 1. A sensor element fixing bracket mounted inside a metal holder elastically abutting on a bottom surface of a cooker, wherein the sensor element fixing bracket is formed in a substantially horizontal disk at an upper part. Forming a storage recess recessed downward in the center of the disk, continuously forming a lead wire fixing cylinder projecting downward at the center of the storage recess, and placing the sensor element laterally in the storage recess. And the upper end of the lead wire is connected to the side surface of the sensor element, the lead wire is once bent to the side, and then pulled out below the center lead wire fixing tube, and the lead wire fixing tube is pulled from both sides. A fixing device for a sensor element of a temperature detecting device for a cooker, wherein a concave portion is formed therebetween to fix the lead wire to the lead wire fixing cylinder. 2. The fixing device for a sensor element of a temperature detecting device for a cooking appliance according to claim 1, wherein the storage recess has a horizontally long shape. 3. The sensor element fixing device according to claim 1, wherein the sensor element fixing bracket is formed by drawing a thin metal plate. 4. The sensor element of a cooker temperature detecting device according to claim 1, wherein the sensor element fixing bracket is configured to be elastically fitted when pushed into the metal holder. Fixing device. 5. The sensor element fixing bracket according to claim 1, wherein:
Fixing device for sensor element of temperature detector for cooker filled with adhesive such as silicon grease and epoxy resin.