JPH0117530B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a temperature sensor used primarily to control the temperature of a rotating heat roller.

Conventional configurations and their problems In recent years, temperature sensors have been required to have higher accuracy, higher response, and robustness in temperature control, and more precise temperature control has been required.

Hereinafter, the conventional temperature sensor as described above will be explained with reference to the drawings.

FIG. 1 is a perspective view showing the entire state of use of a conventional temperature sensor. FIG. 2 is an exploded perspective view showing the assembled configuration. FIG. 3 shows a cross-sectional view of the temperature detection section. Figure 1, Figure 2,
In FIG. 3, 1 is a temperature sensing element that measures temperature changes. 2 is a contact plate that is in contact with the temperature measurement object 10; 3 is an adhesive that fixes the temperature sensing element 1 to the contact plate 2; 4 is a conductor that electrically guides the temperature change of the temperature sensing element 1; 5 is a conductor that connects the contact plate 2. A supporting member 6 is a fixed base for maintaining the positional relationship of the entire temperature sensor with the object to be measured 10, 7 is a pin connecting the fixed base 6 and the supporting member 5, 8 is a cap for preventing the pin 7 from coming off, Reference numeral 9 denotes a spring for pressing the contact plate 2 attached to the support body 5 against the object to be measured 10, and 10 is the object to be measured, which is the object to be measured.

The operation of the temperature sensor configured as above will be explained.

The temperature change of the object to be measured 10 is sensed by the temperature sensing element 1 fixed with an adhesive 3 via the contact plate 2, and the change in the amount of electricity of the temperature sensing element 1 is taken out and measured through the conductor 4. In addition, contact plate 2
is fixed to the support body 5 with studs 11, one end of the support body 5 and one end of the fixed base 6 are held by a pin 7 to enable rotation, and a spring 9 uses the pin 7 as a fulcrum to open the support body 5 to the outside. Attach it so that it is biased to rotate,
The contact plate 2 and the temperature measurement object 10 are configured to be in constant contact with each other. Further, the cap 8 is fixed to the pin 7 to prevent it from coming off in the assembled state.

However, in the above configuration, when the fixed base 6 is not attached parallel to the temperature measurement object 10, the contact plate 2 comes into tilted contact with the temperature measurement object 10, and the contact area is significantly reduced. Heat cannot be accurately transmitted to the temperature sensing element 1 installed inside the plate 2, and the temperature measurement error is large.
A further disadvantage is that the cap 8 is required to securely hold the pin 7.

Purpose of the Invention In view of the above-mentioned drawbacks, the present invention provides a temperature sensor in which the temperature detection part is brought into constant contact with the object to be measured in a stable state to further improve measurement accuracy, and in which the assembly of the constituent structures is simplified. The purpose is to

Structure of the Invention In order to achieve this object, the temperature sensor of the present invention has a protrusion provided at the center of a support constituting a temperature detection section, and holes at both ends of the support through which pins pass through, which are elongated holes. With the pin passed through, the protrusion on the support body uses the pin as a fulcrum and moves parallel to the object to be measured, so even if the temperature sensor is misaligned to the fixed base, the temperature sensing part is securely detected. The pin used to assemble the temperature sensing part and the fixed base has spring properties and is attached to the object to be measured, and has a structure that allows it to be fastened to one end of the fixed base, so that the pin can be processed or fixed after assembly. This eliminates the need for parts.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 4A to 4E show a top view, a side view, a front view, a rear view, and a bottom view showing the usage state of the temperature sensor in the embodiment of the present invention, and FIG. 5 is an exploded perspective view showing the configuration of the temperature detection section. FIG. 6 shows a cross-sectional view of the temperature detection section. In FIGS. 4, 5, and 6, 12 is a temperature sensing element;
3 is a lead wire that conducts electricity from the temperature detection element 12; 14 is a contact plate that contacts the temperature measurement object 15;
16 is an adhesive that fixes the temperature sensing element 12 and the contact plate 14; 17 is a conducting wire for inputting and outputting electricity from the outside to the temperature sensing element 12; 18 is a metal frame that relays the lead wire 13 and the conducting wire 17; 19 is a An insulating heat insulator that electrically insulates the temperature detection element 12 and the metal frame 18 and blocks heat from the surroundings; 20 is a support for mounting and supporting the above-mentioned components; 21 is a support 20
23 is a protrusion that serves as a fulcrum for moving the support 20 parallel to the temperature measurement object 15; 25 is a contact plate 14, an insulating heat insulator 19, and a metal frame 17; 26 is a spring for pressing the contact plate 14 against the temperature measurement object 15; 27 is a pin for assembling the support 20 and the fixed base 22;
2 is a fixed base for attaching the temperature sensor to the object to be measured 15; 28 is a pin holder for holding the pin 27 through; 29 is a locking hole for locking the pin 27; 1
5 is an object to be measured, which is the object to be measured.

Regarding the temperature sensor configured as above,
The operation will be explained below.

First, the thermal change of the dynamic or static temperature measurement object 15 is transmitted through the contact plate 14 to the temperature detection element 12 fixed to the contact plate 14 with adhesive 16, and the lead wire 13,
It measures the temperature of the object to be measured 15 by measuring changes in the temperature sensing element 12 through the metal frame 18 and conductive wire 17, and is assembled with a support 20, and is referred to as a temperature sensing section. The support holding part 21 is provided with a long hole, and when assembled with the fixed base 22 using the pin 27, the fixed base is swung at an angle of θ to the left and right using the protrusion 23 provided on the support 20 as a fulcrum. Even if the temperature sensing portion 22 is poorly attached, the temperature sensing portion is arranged in parallel to and in close contact with the temperature measurement object 15. Further, one end of the pin 27 on which the support body 20 of the temperature sensing portion and the fixed base 22 are assembled enters into the stopper hole 29 of the fixed base 22 to prevent it from coming off.

As described above, according to this embodiment, even if there is a misalignment in the assembly position of the temperature sensor and the object to be measured 15, the elongated hole of the holding part 21 of the temperature sensing part support body 20 and the fulcrum action of the protrusion 23 can be used. , the contact plate 14 of the temperature detection section can be reliably brought into parallel contact with the object to be measured 15, and the pin 27 is used to assemble the support 20 of the temperature detection section and the fixed base 22.
One-touch assembly is possible with just one piece.

Effects of the Invention As described above, the present invention provides a protrusion in the center of the support of the temperature detection part and long holes in the holding parts at both ends, so that the contact plate of the temperature detection part can be securely attached to the object to be measured. It is easy to assemble the base, which is fixed to the temperature sensing part using a springy pin, and then locks one end of the pin into the fixing hole in the base. It can be assembled reliably and has great practical effects.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional temperature sensor in use, Fig. 2 is an exploded perspective view thereof, Fig. 3 is a cross-sectional view of the temperature detection section, and Figs. 4 A to E show the temperature sensor of the present invention. A top view, a side view, a front view, a rear view, and a bottom view showing one embodiment, FIG. 5 is an exploded perspective view of the temperature detection section, and FIG. 6 is a sectional view of the temperature detection section. 12... Temperature sensing element, 13... Lead wire, 1
4...Contact plate, 15...Temperature measurement object, 16...
Adhesive, 17...Conducting wire, 18...Metal frame,
19... Insulating and heat insulating body, 20... Support body, 21...
Support body holding part, 22... Fixed base, 23... Projection, 25... Stud, 26... Spring, 27... Pin, 28... Pin holding part, 29... Stopping hole.

Claims (1)

[Claims] 1. A pin with spring properties is used to assemble and connect the temperature detection part and the support body that holds the temperature detection part, and one end of the pin is fixed to a part of the support body,
Further, the holes at both ends into which the pins of the temperature sensing section are inserted are elongated holes, and a protrusion is provided at the center of the support body so that the pins come in contact with each other, and the temperature sensing section is arranged parallel to the pin with the protrusion as a fulcrum. A temperature sensor with a moving structure.