JP2915811B2 - Spring receiver and fixed support cylinder of thermistor device for cookware - Google Patents

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 utensils. The present invention can be used for other than cookware.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 1, a thermistor d fixed to the end of a lead wire c is attached to the lower surface side of a metal cap body b elastically abutting from below on a bottom surface of a cooking utensil a. b is fitted and fixed in the upper end opening of the cylindrical metal holder e, and a through hole is provided in the step f of the metal holder e so that the fixed support cylinder g fixed to the furnace p can be slid vertically. At the upper end of the fixed support cylinder g, a spring receiver h that slides on the inner wall of the metal holder e is fixed, and a coil spring i is provided between the spring receiver h and the metal cap body b. A thermistor for a cooker in which a cap j is fitted and fixed to a lower end of a fixed support cylinder g is described in JP-A-5-123249 and is well known. Another known example is disclosed in Japanese Patent Laid-Open No. 4-64.
No. 025 and Japanese Utility Model Laid-Open No. 1-108220.
You.

[0003]

The thermistor for cookware of FIG. 1 has two problems. The first is that the spring support h that slides on the inner wall of the separately manufactured metal holder e is fixed to the upper end of the fixed support cylinder g. The second is that the cap j is press-fitted into the lower end of the fixed support cylinder g. Are fixedly fitted. That is, the spring support h that is in sliding contact with the inner wall of the metal holder e is fixed to the upper end of the fixed support cylinder g. To do so, as shown in FIG. The flange m must be formed by storing the pipe in the mold k and compressing it from both sides. After the flange m is formed in this manner, a separate spring receiver h must be fitted to the head n and caulked, so that the spring receiver h and the fixed support cylinder g must be manufactured separately. This requires time and effort to form the flange m on the fixed support cylinder g, which increases the cost. In addition, if the flange m is omitted, the joint will come off in a short period of time. Also, the cap j is attached to the lower end of the fixed support cylinder g by a press-fitting method. However, the cap j attached by the press-fitting method is expensive because it is formed firmly by lathe processing. Since the cap j is press-fitted and fixed, the outer diameter must be slightly larger than the inner diameter of the fixed support cylinder, and there is a problem that requires a great deal of labor and skill in the production. Can not. Further, if the lower end of the cap j is not chamfered, there is a concern that the lead wire c may be rubbed and disconnected, which is also troublesome.

[0004]

Means for Solving the Problems] Accordingly, the present invention is vertical
Both open and have a non-rotating vertical ridge 20 on the inner surface and a small diameter at the bottom
Cylindrical gold having a portion 1 'or provided with a stopper 22
Metal holder 1 and gold fitted and fixed in the opening 2 at the upper end.
Genuine cap body 5 and the small diameter portion provided in the metal holder 1
1 ′ or on the outer periphery stopped by the stopper 22
A spring receiver 7 having an engaging portion 19 for engaging with the ridge 20;
And a through hole 3 of the metal holder 1
Vertically fixed to the furnace p side
Between the fixed support cylinder 6, the spring receiver 7, and the metal cap 5
And a coil spring 8 provided on the
The fixed support cylinder 6 is integrally formed by deep drawing a flat metal plate.
The fixed support cylinder 6 has a double-folded
Cookware in which the annular projecting portion 23 is integrally formed by deep drawing
And a fixed support cylinder of the thermistor device . In addition, the upper and lower sides are opened , and the vertical protrusions 20 are prevented from rotating on the inner surface.
There is a small diameter part 1 'at the bottom or a stopper 22
Cylindrical metal holder 1 provided with
A metal cap body 5 fitted and fixed in the metal holder 1
Stop at the small diameter portion 1 'provided or the stopper 22.
If there is an engaging portion 19 on the outer periphery
A spring holder 7 at the upper end and a metal holder
-1 through the through-hole 3 and fixed downward to the furnace p side.
The fixed support cylinder 6 which is long in the vertical direction, the spring receiver 7 and the
A coil spring 8 provided between the metal cap body 5 and the
The spring support 7 and the fixed support cylinder 6 are formed by deep drawing a metal plate.
And integrally molded, and the lower end of the fixed support cylinder 6
The annular protruding part 24 that spreads like a trumpet is integrated by drawing.
And fixation of the spring thermistor device for cookware
It is a support cylinder . The present invention also relates to a cylindrical metal holder 1 having an upper and lower opening and having a vertical protrusion 20 on its inner surface, and a metal cap 5 fitted and fixed in the opening 2 at the upper end.
And the vertical protrusion 2 on the outer periphery provided in the metal holder 1.
And a spring receiver 7 having an engaging portion 19 that engages with the metal holder 0. The spring receiver 7 has the spring receiver 7 at the upper end, and is fixed downward to the furnace p side through the through hole 3 of the metal holter 1. A vertically extending fixed support cylinder 6, a coil spring 8 provided between the spring receiver 7 and the metal cap body 5, and a cap 14 attached to a lower end of the fixed support cylinder 6; The spring support 7 and the fixed support tube 6 are integrally formed by deep drawing a flat plate made of stainless steel, phosphor bronze or brass, and when the fixed support tube 6 is deep drawn, an inner periphery is provided around the lower end thereof. Forming an inwardly constricted portion 13 bent toward the
Is a cylindrical portion 16 fitted into the outer periphery of the lower end of the fixed support cylinder 6 from below, and protrudes outwardly formed on the upper edge of the cylindrical portion 16.
The cap has an inner folded portion 17 that surrounds the inner narrowed portion 13 from the inside when the annular projecting portion 15 and the cylindrical portion 16 are fitted to the lower end of the fixed support cylinder 6 from below. Reference numeral 14 denotes a thermistor for a cookware in which the cylindrical portion 16 is fitted to the outer periphery of the lower end of the fixed support tube 6 from below, and then the inner folded portion 17 is swaged around the inner narrowed portion 13 and fixed. It is a spring support and a fixed support cylinder of the device.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.
1 is a metal holder, 2 is an opening at the upper end, 3 is a through hole formed in the center of the lower part, and 4 is a step. A metal cap 5 is placed over the upper end opening 2 from above. The metal cap body (heat collecting metal member) 5 is provided with a metal holder 1 by means of a concave-convex engaging portion.
Is fitted and fixed. The upper end of a vertical fixed support cylinder 6 is fitted into the through hole 3 provided in the step portion 4 so as to be vertically slidable. The upper end of the fixed support cylinder 6 projects into the metal holder 1,
The spring receiver 7 is formed there. The fixed support cylinder 6 and the spring receiver 7 are integrally formed by deep drawing press working a plate made of stainless steel, phosphor bronze, or brass ten or more times.
The fixed support cylinder 6 is fixed to the furnace p side, and
A coil spring 8 is provided between the metal cap 5 and the metal cap 5. Therefore, the metal cap body 5 moves upward by the elastic force of the coil spring 8, and is pushed down by the cooking utensil a and descends.

A fixing metal 9 is spot-welded to the lower surface of the metal cap body 5, and a thermistor 10 is provided in the fixing metal 9.
Is provided. 11 is a code. The lower end of the fixed support cylinder 6 of the first embodiment is formed in a small-diameter portion 12, and the front end of the small-diameter portion 12 is formed by bending the entire periphery inward to form an inner narrowed portion 13, and a cap 14 is mounted thereon. . The cap 14
As shown in FIG. 9, a thin metal plate is used as a material, and is formed by sheet metal drawing, and has a cylindrical portion 16 having an inner diameter that fits completely from below onto the outside of the small-diameter portion 12, and is integrally formed on the upper edge of the cylindrical portion 16. An annular projecting portion 15 protruding outwardly formed at the bottom and an inner folded portion 17 integrally formed at the lower end of the cylindrical portion 16 are provided.
An insertion portion 18 is formed between the inner support member 17 and the inner turning portion 17, the cap 14 is fitted into the mold s as shown in FIG. 7, the small diameter portion 12 at the lower end of the fixed support cylinder 6 is inserted from above, and the punch t is removed. When it is inserted into the fixed support cylinder 6 and the punch t is hit,
Is wound around the inner narrowing portion 13 and easily attached. In FIG. 5, reference numeral 19 denotes a detent engaging portion formed on the spring receiver 7, and reference numeral 20 denotes a vertical ridge formed on the metal holder 1.

FIG. 10 shows an embodiment of the step portion 4. Reference numeral 21 denotes upper and lower engaging recesses formed in the metal holder 1. Reference numeral 22 denotes a stopper fixed between the upper and lower engaging recesses 21. A separate stopper 22 may be provided as described above.
23 of FIG. 11 was formed by the press working method of FIG.
An annular projection of the double folded, the annular projecting portion 23 is another embodiment of the cap 14 of Figure 4. Also, 24 in FIG.
Is an annular shape formed at the lower end of the fixed support cylinder 6 and extending in a trumpet shape.
The annular projection 24 is another example of the cap 14. The annular projections 15 and 2 of the cap 14
Numerals 3 and 24 are diameters passing through the through holes 3.

[0008] Figure 13 is an illustration of the attachment of the annular projection 15, 23, 24 Nokon furnace p, slits formed in 25 WaKonro P side, 26 the annular projection 15,
A stopper for fixing the fittings 23 and 24 to the slit 25 and then fixing the fitting. The annular projections 15, 23 and 24 are fitted to the slit 25 to fix the vertical movement of the fixed support cylinder 6.

[0009]

Next, the operation will be described. The fixing bracket 9 is welded and fixed to the back surface of the metal cap body 5 by a spot, and the cord 1 is fixed in the fixing bracket 9.
The fixed thermistor 10 attached to the tip of the fixed support tube 6 is inserted by a fingertip and fixed, the lower end of the cord 11 is inserted from above the fixed support tube 6 and pulled out below the fixed support tube 6, and the cord 11 is inserted therethrough. the annular projection 15 or the ring-like projections 23 and 24 of the cap 14 attached to the 6 lower end of, and inserted over the metal holder 1 through the through hole 3, fitting the metallic cap body 5 thereafter metal holder 1 After the fixing, the assembling of the thermistor is completed. Once the metal cap body 5 is fitted and fixed, it is assembled so as not to come off for safety. When one of the annular projections 15, 23, and 24 of the thermistor thus assembled is engaged with a slit 25 formed on the furnace p side and fixed from the outside with a stopper 26, the fixed support cylinder 6 Is fixed so as not to move up and down.

In this state, when the cooker a is placed on the furnace p, the metal cap body 5 comes into contact with the lower surface of the cooker a and is pushed by the weight of the cooker a to resist the elasticity of the coil spring 8. And descend. However, an engaging portion 19 for preventing rotation is formed on the peripheral surface of the spring receiver 7 integral with the fixed support cylinder 6 fixed on the furnace p side,
Since the engaging portion 19 is engaged with a vertical ridge 20 of a detent formed on the inner surface of the metal holder 1, the metal holder 1 does not rotate but merely moves up and down.
There is no twist of the cord 11, and the heating state of the cooking utensil a can be detected well over a long period of time to ensure safety.

The fixed support cylinder 6 and the spring receiver 7 of the present invention are both made of stainless steel, phosphor bronze or brass flat plate, and are gradually deep drawn by a deep drawing press machine. Thus, the engaging portion 19, the spring receiving member 7, the fixed support cylinder 6, the small-diameter portion 12 at the lower end, and the inner narrow portion 13 are simultaneously and integrally formed at once. In the embodiment shown in FIG. 11, the annular projection 23 is formed at one time, and in the embodiment shown in FIG. 12, the annular projection 24 is formed at once. In the experiment, it was formed well by pressing several ten times.

In the first embodiment, the cap 14 shown in FIG. 9 is formed by drawing using a flat plate of stainless steel, phosphor bronze or brass by a separate deep drawing press. The cap 14 is placed on the mold s as shown in FIG. 7, the inward narrowing portion 13 of the small-diameter portion 12 at the lower end of the fixed support cylinder 6 is inserted from above, and is hit with a punch t. 17 is bent and wrapped around the inner narrowed portion 13 to be easily fixed.

At this time, since the cylindrical portion 16 is swelled by the punch t, the outer diameter of the lower end small diameter portion 12 and the inner diameter of the cylindrical portion 16 need not be strict.

[0014]

According to the present invention, there is provided a cylindrical metal holder 1 having a vertical projection 20 on the inner surface and a detent vertical ridge 20 on the inner surface and a lower portion having a small diameter portion 1 'or a stopper 22 provided thereon. There is a metal cap body 5 fitted and fixed to the part 2, and an engaging part 19 that engages with the vertical ridge 20 on the small diameter part 1 ′ provided in the metal holder 1 or on the outer periphery stopped by the stopper 22. A vertically long fixed support cylinder 6 having the spring receiver 7 at its upper end, hanging downward through the through hole 3 of the metal holder 1 and being fixed to the furnace p side; A coil spring 8 provided between the receiver 7 and the metal cap 5; the spring receiver 7 and the fixed support cylinder 6 are integrally formed by deep drawing a flat metal plate; At the lower end of the fixed support cylinder 6, a double folded annular projecting portion 23 is integrally formed by deep drawing. Since the spring receiver and the fixed support cylinder of the thermistor device for a cooker are formed as a single body, the spring receiver 7, the fixed support cylinder 6, and the annular projection 23 are integrally formed by deep drawing. Conventional spring receiver 7 and fixed support cylinder 6
Are much cheaper than those formed separately but integrated by mounting. In addition, both the upper and lower sides are open and the inner surface is provided with a detent vertical ridge 20 and the lower part is a small-diameter part 1 'or a cylindrical metal holder 1 provided with a stopper 22 and fitted and fixed to the opening part 2 at the upper end. Metal cap body 5
A spring receiver 7 having an engaging portion 19 which engages with the vertical ridge 20 on the small diameter portion 1 ′ provided in the metal holder 1 or on the outer periphery stopped by a stopper 22;
And a vertically long fixed support cylinder 6 having an upper end at the upper end and passing downward through the through-hole 3 of the metal holder 1 and fixed to the furnace p side, and the spring receiver 7 and the metal cap body 5. The spring support 7 and the fixed support cylinder 6 are integrally formed by deep drawing a flat metal plate, and the lower end of the fixed support cylinder 6 has a trumpet shape. The above-mentioned effect can be expected as it is because the annular projection 24 extending to the outside is formed as a spring support and a fixed support cylinder of the thermistor device for cookware integrally formed by drawing. The present invention also provides a cylindrical metal holder 1 which is open at both the top and bottom and has a vertical ridge 20 on its inner surface, a metal cap body 5 fitted and fixed to the opening 2 at the upper end, A spring receiver 7 having an engaging portion 19 which engages with the vertical ridge 20 on the outer periphery provided at the upper end thereof, and has the spring receiver 7 at the upper end, and descends downward through the through hole 3 of the metal holder 1. An upper and lower fixed support cylinder 6 fixed to an incinerator p side, a coil spring 8 provided between the spring receiver 7 and the metal cap body 5,
The spring support 7 and the fixed support cylinder 6 are integrally formed by deep drawing a flat plate made of stainless steel, phosphor bronze or brass. When deep drawing 6 is formed, an inwardly drawn portion 13 which is bent inward is formed all around the lower end thereof.
The cap 14 includes a cylindrical portion 16 fitted to the outer periphery of the lower end of the fixed support cylinder 6 from below, and an annular projecting portion 15 formed on an upper edge portion of the cylindrical portion 16 and projecting outward. When the lower end of the fixed support cylinder 6 is fitted from below, the inner support section 13 has an inner folded portion 17 that surrounds the inner narrowed section 13 from the inside, and the cap 14 connects the cylindrical section 16 to the fixed support cylinder. After being fitted to the outer periphery of the lower end of the lower part 6 from below, the inner folded part 17 is crimped so as to be wound around the inner narrowed part 13 and fixed to form a spring receiver and a fixed support cylinder of a thermistor device for cookware. As compared with the known example of FIG. 3 in which a conventional cap is press-fitted, the cost can be significantly reduced, and a flat plate made of stainless steel or phosphor bronze or brass is used and formed by deep drawing a plurality of times. Deep drawing can be formed beautifully Kill.

[Brief description of the drawings]

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

FIG. 2 is a processing state diagram of a fixed support cylinder of a known example.

FIG. 3 is a mounting state diagram of a known cap.

FIG. 4 is a vertical side view of the present invention.

FIG. 5 is a plan view of the spring receiver of the present invention.

FIG. 6 is a side view of the spring support and the fixed support cylinder of the present invention.

FIG. 7 is a mounting state diagram of the cap of the present invention.

FIG. 8 is a longitudinal sectional view of the lower end of the fixed support cylinder of the present invention.

FIG. 9 is a longitudinal sectional view of the cap of the present invention.

FIG. 10 is a view of a second embodiment of the present invention.

FIG. 11 is a view showing a second embodiment of the cap according to the present invention.

FIG. 12 is a view showing a third embodiment of the cap according to the present invention;

FIG. 13 is a fixed state diagram of the fixed support cylinder of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Metal holder, 2 ... Upper end opening part, 3 ... Through hole, 4 ... Step part, 5 ... Metal cap body (heat collecting metal member), 6 ... Fixed support cylinder,
7 ... Spring receiver, 8 ... Coil spring, 9 ... Fixing bracket, 10 ...
Thermistor, 11: Cord, 12: Small diameter portion, 13: Inner throttle portion, 14: Cap, 15: Annular protruding portion , 16: Cylindrical portion, 17: Inner folded portion, 18: Insertion portion, 19: Engagement portion ,
Reference numeral 20: vertical ridge, 21: engagement recess, 22: stopper, 2
3 ... annular projection , 24 ... annular projection , 25 ... slit,
26 ... Fittings.

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yosei Kobayashi 1-17-17 Numakage, Urawa-shi, Saitama Mitsui Mining & Smelting Co., Ltd. Thermistor Division, Parts Processing Division (56) References JP-A-5-123249 ( JP, A) JP-A-4-64025 (JP, A) JP-A-1-108220 (JP, U) Japan Patent Office, “Technical Trend Series, Fixation of Machine Element Handbooks from the View of Patents, First Edition” (Showa 55-9- 25) Invention Association p. 84, Figures 366, 367 (58) Fields investigated (Int. Cl. ⁶ , DB name) A47J 27/00 103

Claims (3)

(57) [Claims] 1. A vertical ridge 2 which is open at both the upper and lower sides and is detented on the inner surface.
0 and the lower part is a small diameter part 1 'or a stopper 2
A cylindrical metal holder 1 provided with an upper end 2 and an opening at the upper end
2 and a metal cap body 5 fitted and fixed in the metal holder 1
Stop at the small diameter part 1 'provided at
The engaging portion 19 is provided on the outer periphery of
A spring holder 7 and the metal holder having the spring holder 7 at an upper end;
Through the through hole 3 of the hopper 1 and fixed downward to the furnace p side
The fixed support cylinder 6 which is long vertically and the spring receiver 7
And a coil spring 8 provided between the metal cap body 5 and
The spring support 7 and the fixed support cylinder 6 are drawn deeply from a metal plate.
Processed and formed integrally, and under the fixed support cylinder 6
At the end, a double folded annular projection 23 is integrated by deep drawing
And fixation of the spring thermistor device for cookware
Support tube . 2. A vertical ridge 2 which is open at both the upper and lower sides and is not detented on the inner surface.
0 and the lower part is a small diameter part 1 'or a stopper 2
A cylindrical metal holter 1 provided with an upper end 2 and an opening at the upper end
2 and a metal cap body 5 fitted and fixed in the metal holder 1
Stop at the small diameter part 1 'provided at
The engaging portion 19 is provided on the outer periphery of
A spring holder 7 and the metal holder having the spring holder 7 at an upper end;
Through the through hole 3 of the hopper 1 and fixed downward to the furnace p side
The fixed support cylinder 6 which is long vertically and the spring receiver 7
And a coil spring 8 provided between the metal cap body 5 and
The spring support 7 and the fixed support cylinder 6 are drawn deeply from a metal plate.
Processed and formed integrally, and under the fixed support cylinder 6
At the end, the annular protruding portion 24 that spreads like a trumpet is
The spring receiver and the fixation of the physically formed thermistor device for cookware
Constant support cylinder . 3. A vertical ridge 2 which is open at both the upper and lower sides and is not detented on the inner surface.
0, a cylindrical metal holder 1 having an opening
A metal cap body 5 fitted and fixed to a metal holder 1, a spring receiver 7 having an engaging portion 19 on the outer periphery provided in the metal holder 1 and engaging with the vertical ridge 20, and the spring receiver 7 having an upper end. A vertically long fixed support cylinder 6 that is fixed downward to the furnace p side through the through hole 3 of the metal holder 1 and provided between the spring receiver 7 and the metal cap body 5. And the cap 14 attached to the lower end of the fixed support cylinder 6, the spring receiver 7 and the fixed support cylinder 6 are formed by deep drawing a plate of stainless steel, phosphor bronze, or brass. When the fixed support cylinder 6 is integrally formed and deep drawn, an inwardly bent portion 13 which is bent inward is formed around the entire lower end thereof. 16 that fits from below and the outer portion formed on the upper edge of the cylinder 16 The annular projection 15 and the tubular portion 16 protrude has a inwardly bent portion 17 which comes to surround the inner diaphragm portion 13 from the inside when fitted from below to the lower end of said stationary support cylinder 6, The cap 14 is connected to the cylinder 16
And a spring receiver of a thermistor device for a cooker, which is fitted to the outer periphery of the lower end of the fixed support cylinder 6 from below, and then caulked so that the inner folded portion 17 is wound around the inner narrowed portion 13 and fixed. Fixed support tube.