JP2673868B2 - 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. INDUSTRIAL APPLICABILITY The present invention can be used for similar products other than cookers.

[0002]

2. Description of the Related Art The present application is a patent application that corresponds to the applicant's prior application.
Improved 3-313479 (Patent 2612790)
It was done. Conventionally known, Shoukai 60-1408
In Japanese Patent Laid-Open No. 01-001, as shown in FIG. 12, a cylindrical metal holder a made of a thin metal plate and having open upper and lower ends, and a thermistor b fixed to the upper surface of the metal holder a by fitting and fixing from above. A metal cap c, a vertical fixed pipe e fixed to a fixed frame d of the main body and having an upper end fitted in the metal holder a,
A coil spring f for moving the metal holder a upward is provided between the fixed frame d and the metal holder a, and a part of the fixed pipe e is laterally projected to form a protrusion g.
The structure in which the protrusion g is engaged with the slit h of the metal holder a, and FIG. 4 of the above-mentioned publication describe the structure in which the metal holder a is moved up and down by rotating the adjusting tool. Further, conventionally known Japanese Patent Laid-Open No. 4-90421.
As shown in FIG. 13, the publication discloses that the upper and lower ends are made of a thin metal plate and have openings.
A cylindrical metal holder a with a blind periphery, and the holder
Longitudinal thermistor fitted and fixed to the upper part of a from above
a metal cap body c to which b is fixed, and a collar i provided in the holder a.
And a ring j fixed to the upper end of the fixed pipe e,
And the thermistor provided between the coil j and the collar i.
The lead wire k hanging from the star b is described.
You. Further, conventionally known Japanese Patent Laid-Open No. 58-17325
As shown in Fig. 14, it is made of a thin metal plate and the upper and lower ends are open.
A cylindrical metal holder a and the upper part of the holder a.
Then, fix the thermistor b to the back side fitted with
A metal cap c and a bowl-shaped portion i at the upper end
It is fixed to the holder a and pulled out downward to
Adjustment pipe j in which the lead wire m of the switch b moves up and down
And the lower surface of the collar n fixed to the intermediate position of the adjusting pipe j
It is located between the fixed parts d and moves the adjusting pipe j upward.
One coil spring f, the upper surface of the bowl-shaped portion i and the cap body c
A second coil spring k which is moved upward to position above cap body between,
A vertical slit h provided on the cylindrical metal holder a;
For the projection g that engages with the vertical slit h provided on the side of the cap body c
It is described.

[0003]

FIG. 1 of the first known example .
The metal cap body c of the thermistor device for a cooker 2 has a structure for preventing the protrusion g and the slit h from engaging with each other. The holder a and the metal cap body c do not rotate, and the lead wire is not twisted, but some problems remain unsolved, so it seems that they have not been implemented. The first is that the engagement detent structure for the protrusion g and the slit h is an exposed structure. Since the projections g and the slits h have an exposed structure, the juice from the spillage adheres and is gelatinized within 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. Fourthly, the protrusion g and the slit h are engaged only at one place. Since the metal holder a is engaged at only one location on one side, the metal holder a may tilt and become immobile. The figure above
In the case of No. 13, the thermistor b is placed vertically on the metal cap body c.
Since it is only inserted and fixed from the
Cheap. Further, the lead wire k hangs from the thermistor b.
Because of the structure, each time the thermistor b moves up and down, the lead wire
k is the sideways deflection, the part where the thermistor b and the lead wire k are attached
Unreasonable kinking occurs and the wire is easy to break. Also fixed pipe
Since e and holder a do not have a rotation stop structure,
The line k may be twisted and broken. Also, Thermis
The tab b is inserted and fixed from below, so it can be easily installed.
I can't . In the structure shown in FIG. 14, the coil springs f and k are
Since they are used individually, the structure is complicated and the cost is high.
And the slit h and the protrusion g for preventing the cap c from rotating are exposed.
Because of the structure, there are the same problems as in the case of FIG.
And, also because's a peeled first coil spring f, used in a short period of time
There are challenges that make it impossible. That is, as a coil spring,
Two coil springs f and second coil spring k are used.
So, that alone doubles the cost. Also, in the cap body c
Since the slit h and the protrusion g of the rotation stopper are exposed,
The juice of the spillover adheres to gelatinize within a short period of time and
The movement of the metal holder a becomes poor. The spilled juice of the dish is
Contains sugar and salt, so when water evaporates, it becomes a paste.
This entered the thermistor through the slit and the
I can't bear it. Especially, Chinese boiled spilled juice is oily.
It is not possible to remove it because it is too much, and it causes malfunction in a short time.
Will cause a major accident. This problem is
It also occurs in f. Since the coil spring f also has an exposed structure,
Similarly, if the juice of the spilled substance adheres, it does not work as a spring.
The problem of becoming .

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention is a thin metal alloy.
It is made of metal and has upper and lower ends open and a plurality of engaging recesses 7 at the upper end.
A cylindrical metal holder 1 formed of a non-perforated plate,
The holder protruding toward the center at the upper and lower intermediate position of the rudder 1.
And a flange 4 integrally formed with or separately from the flange, and the plurality of engaging recesses.
It has a protrusion 8 that engages with the portion 7, and is fitted into the holder 1 from above.
Metal cap body 9 to be fixed together and fixed to the back surface of the metal cap body 9
Fixing metal fittings 19 for fixing the thermistor 20 in a horizontal direction
And an inner portion formed at the center of the collar 4 of the holder 1.
A vertical through hole 5 having a groove 6 in the circumference, and the through hole 5
A vertical protrusion that is inserted from above with respect to and engages with the groove 6
16 has a saucer 12 fixed to the upper end, and the saucer 12 is
Vertical fixed pipe 10 which is stopped and vertically hung on the collar 4.
And is attached to the thermistor 20 in a fold-back shape.
After that, it hangs down inside the vertically fixed pipe 10 and pulled from the lower end.
A lead wire 24 to be issued, the said vertical fixed pipe 1 0
The holder is attached between the saucer 12 and the lower surface of the cap body 9.
One coil spring 17 for moving the da 1 and the cap body 9 upward
And a thermistor device for a cooker.
Further, in the apparatus, the collar 4 is the fixed pipe 1.
No. 0, and the collar 4 is attached to the fixed pipe 10.
What is used as a thermistor device for cooking utensils
It is . In addition, in the above device, the fixing bracket 19 is
The contact is spot熔着 in construction to the lower surface of the metal cap body 9
It is a thermistor device for cookware . Also,
In the device, the fixing bracket 19 is the thermistor.
Slitting the storage portion 21 of the switch 20 and the lead wire fixing portion 23
A thermistor device for a cooker provided with 22
It is . In addition, in the device,
The storage part 21 is made of silicone grease, epoxy resin, etc.
Cooker sir that contains the thermistor 20 through a filler
It is a mister device .

[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 to be fixed to the main body later, has no holes in the periphery, and has an engaging groove 11 formed by bulging at the upper end, and the engaging groove 11 is formed on the bottom 13 of the bowl-shaped sliding body 12. The formed engaging hole 14 is engaged and caulked.
The AA cross section of the collar 4 is as shown in FIG.
Three 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 the lower position of the bulging portion 15 at the upper portion of the pipe 10, BB
As shown in FIG. 8 of the cross section, two or three bulging vertical ridges 16 formed by bulging the pipe 10 outward are provided, and the vertical ridges 16 are engaged with the concave grooves 6 of the collar 4.

The lower end of the pipe 10 is fixed to the stove body, and the metal holder 1 is engaged with the vertical protrusion 16 and the concave groove 6 with respect to the pipe 10, and therefore does 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 as shown in FIG .

On the lower surface of the metal cap body 9, as shown in FIG. 3, a fixing metal fitting 19 made of a thin metal plate is spot-welded. The fixing bracket 19 includes a storage part 21 of the thermistor 20 and a storage part 21.
And the lead wire fixing portion 23 provided with the slit 22 placed. 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 storage portion 21 and the lead wire fixing portion 23 are illustrated.
3 is U-shaped (may be U-shaped) when viewed from the direction a, and the glass-like thermistor 20 has a lead wire 24 attached to the tip thereof, and the portion of the thermistor 20 is accommodated in the housing portion 2.
The lead wire 24 is fixed by pushing the lead wire 24 into the lead wire 1 and crushing only the lead wire fixing portion 23. At this time, the storage section 21 is filled with silicone grease (which may be epoxy resin, as long as 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. The fixing metal fitting 19 is brought into contact with the lower surface of the metal cap body 9 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 held at the tip end, 20 is pushed through the lead wire fixing portion 23 and into the storage portion 21, and the lead wire fixing portion 23
Crush the part of. 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 has 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.

When using the cooker 18 on a gas table such as a stove
When is placed, the metal cap body 9 that is raised by the elasticity of the coil spring 17 comes into close contact with the bottom wall of the cooking utensil 18. When cooking in this state, when cooking becomes hollow burning and abnormal heating occurs,
When the tempura oil is heated above the limit and is in a dangerous state, the thermistor 20 detects this and shuts off the gas plug to prevent an accident.

However, when cooking Chinese food, the cooker 18 is violently moved up and down, front and back, and left and right, but 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. Therefore, 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 kinked and there is no possibility 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 metal cap C of the thermistor device for a cooker shown in FIG. 12 of the first known example has a detent structure for engaging the projections g and the slits h, so that when cooking Chinese food, Even if the cooker is moved up and down and left and right, the metal holder a and the metal cap body c do not rotate and the lead wire is not twisted. However, some problems remain unsolved. , It seems that it has not been implemented. The first is that the engagement detent structure for the protrusion g and the slit h is an exposed structure. Since the protrusion g and the slit h have an exposed structure, juice from a spilled substance adheres and gelatinizes in a short period of time.
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. Fourthly, the protrusion g and the slit h are engaged only at one place. 1 on one side
Since the metal holder a is engaged only at some points, the metal holder a may tilt and become immobile. The thing of the said FIG. 13 is a metal cap body
The thermistor b is inserted and fixed vertically from below in c
Since it is easy to come off, it is easy to malfunction. Also lead wire
Since k is a structure that hangs from the thermistor b,
The lead wire k swings sideways each time b moves up and down.
Unreasonable kinking occurred at the joint between b and lead wire k
Easy to break. Also, the fixed pipe e and the holder a are non-rotating
Since it does not have the structure of, the lead wire k is twisted and disconnected.
Sometimes. Also, insert the thermistor b from below.
As it is fixed, it cannot be installed easily . In FIG.
The structure uses two coil springs f and k, so
The structure is complicated and the cost is high.
Since the lit h and the protrusion g are exposed, the structure shown in FIG.
There is a problem similar to the case, the first coil spring f is also peeled
However, there is a problem that it becomes unusable in a short period of time. Immediately
As the coil spring, the first coil spring f and the second coil
Since two springs k are used, the cost alone is
Doubles. Also, the slit h and the protrusion of the cap c
Since the g is bare, the juice from the spillage adheres and is short.
It gelatinizes within the period, and the movement of the metal holder a does not get worse.
You. Boiled spilled juice of the dish contains sugar and salt,
When water evaporates, it becomes a paste, which is called a slit.
Risa invades the thermistor and cannot handle it. Especially Chinese
The spilled juice from the dish cannot be removed because it contains a lot of oil.
Cause of a major accident due to malfunction in a short time
become. This problem also occurs in the coil spring f. coil
The spring f also has an exposed structure, so that the juice from
There is a problem that if it adheres, it will not work as a spring.
You . However, the present invention is made of a thin metal plate and has open upper and lower ends.
A cylindrical non-perforated plate having a plurality of engaging recesses 7 at the upper end.
The metal holder 1 to be formed and the upper and lower intermediate positions of the holder 1.
An integral structure or a separate structure with the holder protruding toward the center
And a protrusion 8 that engages with the plurality of engaging recesses 7.
A metal cap body 9 that is fitted and fixed to the holder 1 from above
And the thermistor 20 fixed to the back surface of the metal cap body 9
Fixing bracket 19 for fixing in the direction, and the collar of the holder 1.
Upward and downward having a groove 6 formed in the inner periphery formed at the center of 4
Direction through hole 5, and is inserted into the through hole 5 from above.
It has a vertical protrusion 16 that engages with the groove 6, and has a saucer at the upper end.
12 is fixed, and the saucer 12 stops against the collar 4 and stops.
The vertically fixed pipe 10 provided and the thermistor 20 are paired.
Then, the vertical fixed pipe 10 is attached in a fold-back shape.
The lead wire 24 that hangs inside and is pulled out from the lower end,
The lower surface of the saucer 12 of the vertically fixed pipe 10 and the cap body 9
Mounted between the holder 1 and the cap body 9 and moved upward.
Since it is a thermistor device for a cooker including one coil spring 17 that is provided, a plurality of engaging recesses 7 are provided at the upper end.
For a metal holder 1 formed of a non-perforated cylindrical plate having
Since the metal cap body 9 having the projection 8 is fitted and fixed from above,
Unlike the second known example, the spilled juice does not enter inside.
The thermistor 20 is laterally fixed to the back surface of the metal cap body 9.
Fix the fixing bracket 19 and attach the thermistor 20 sideways
The thermistor 20 is stable due to the vertical movement.
And is formed in the center of the collar 4 of the holder 1.
The vertical ridge 1 is provided in the vertical through hole 5 having the concave groove 6 on the inner circumference.
Vertically fixed pipe 10 having 6 and a saucer 12 at the upper end
Unlike the second known example, the holder 1 rotates because the
It prevents the twisting of the lead wire 24 by
24 is mounted on the fold-back shape with respect to thermistor 20 Resona
After that, it hangs down inside the vertically fixed pipe 10 and is pulled out from the lower end.
It is the simplest structure, but the folds are up and down.
Vertically fixed pipe that can be elastically deformed in the direction to prevent disconnection
A coil is provided between the saucer 12 of 10 and the lower surface of the cap body 9.
Since the spring 17 is attached, unlike the third known example, one
It can be composed of an il spring , and the coil spring 17 is exposed.
Since there is no spilled juice, it has the effect of being used for a long time without sticking.
Play . Moreover, in the said apparatus, the said collar 4 is the said fixed
The collar 10 is formed separately from the pipe 10, and the collar 4 is fixed to the fixed pipe.
And a thermistor device for a cooker fixed by crimping to 10.
Since it is a machined one, it is not an expensive shaving process, it is a cheap
It can be formed by processing sheet metal. Also, in the above device,
The fixing bracket 19 contacts the lower surface of the metal cap 9 and
A thermistor device for a cooker configured to be welded
Since it is a thing, attachment of the fixing metal fitting 19 is also easy .
Further, in the above device, the fixing metal fitting 19 is
-Install the storage section 21 of the mister 20 and the lead wire fixing section 23
As a thermistor device for the cooker provided with the rit 22
Since the lead wire fixing portion 23 is crushed,
The thermistor 20 can be firmly fixed without reaching the star storage section 21.
I can . Further, in the device,
The storage section 21 is filled with silicon grease, epoxy resin, or the like.
Cooker thermistor containing the thermistor 20 through a filler.
Since the device is a star device, the thermistor 20
Good heat transfer .

[Brief description of the 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 line CC.

FIG. 12 is a first known example diagram.

FIG. 13 is a second known example diagram.

FIG. 14 is a third 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.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoyo Kobayashi 1-17-17 Numakage, Urawa-shi, Saitama Mitsui Mining & Smelting Co., Ltd., Thermistor Division, Parts Processing Business Unit (56) Reference JP-A-4-90421 ( JP, A) JP 58-17325 (JP, A)

Claims (5)

(57) [Claims] 1. A thin metal plate having upper and lower ends opened and a plurality of upper ends.
Of gold formed from a cylindrical non-perforated plate having the engaging recesses 7 of
The metal holder 1 and the center of the holder 1 at the upper and lower intermediate positions
4 integrally or separately formed with the holder that protrudes
And a protrusion 8 that engages with the plurality of engaging recesses 7.
A metal cap body 9 fitted and fixed to the holder 1 from above,
The thermistor 20 fixed to the back surface of the cap 9 is fixed sideways.
Fixing bracket 19 to be fixed and the center of the collar 4 of the holder 1
Penetration in the up-down direction having a concave groove 6 formed on the inner periphery
The hole 5 and the concave groove that is inserted into the through hole 5 from above.
6 has a vertical protrusion 16 that engages with 6, and the receiving tray 12 is fixed to the upper end.
Then, the tray 12 hits the collar 4 and is stopped and hung vertically.
With respect to the vertically fixed pipe 10 and the thermistor 20,
It is attached in a letter shape and then hangs down in the vertical fixed pipe 10.
And the lead wire 24 pulled out from the lower end, and the vertical fixing
Between the saucer 12 of the pipe 10 and the lower surface of the cap body 9
One that is mounted and moves up the holder 1 and the cap body 9
The thermistor device for the cooker, which comprises the coil spring 17 of FIG . 2. The collar 4 according to claim 1, wherein the collar 4 is fixed.
The collar 10 is formed separately from the pipe 10, and the collar 4 is fixed to the fixed pipe.
A thermistor device for a cooker that is crimped and fixed to 10 . 3. The fixing bracket 19 according to claim 1,
In a structure in which the lower surface of the metal cap body 9 is abutted and spot welded
Thermistor device for cooker . 4. The fixing bracket 19 according to claim 1.
Is a housing portion 21 of the thermistor 20 and a lead wire fixing portion.
23 and the thermist for the cooker provided with the slit 22
Data device . 5. The fixing bracket 19 according to claim 4,
The storage part 21 is made of silicone grease, epoxy resin, etc.
Cooker sir that contains the thermistor 20 through a filler
Mister device .