JPS603838Y2 - temperature control device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a temperature regulating device such as an electric iron.

Generally, this type of temperature control device operates by having a fixed contact plate and a movable contact plate placed opposite each other, a bimetal that interlocks the movable contact plate to open and close the contacts, and a fixed contact plate pressed and held at a desired position. It is equipped with an adjustment shaft for setting the temperature.

The adjustment shaft has a double structure and a fine adjustment screw is provided inside, and when the operating temperature is finely adjusted in the production process, the fine adjustment screw inside the adjustment shaft is rotated back and forth.

However, with such a structure, the structure of the adjustment shaft is complicated, and it has a fine adjustment screw that is only necessary for adjustment in the production process. It needs to be fixed, which is expensive.

The present invention is an attempt to improve these points, and makes it possible to easily adjust the temperature in the production process using low-cost parts.

Next, an iron showing an embodiment of the present invention in the drawings will be described.

1 is a base, and a heating element 2 is embedded in this base 1.

A cover 3 is attached on the base 1, and this cover 3
A handle body 4 made of heat-resistant synthetic resin is attached on top.

An automatic temperature control device main body 5 is provided on the base 1.

The automatic temperature control device main body 5 has a fixed contact plate 9, which is a spring plate that is always biased upward and has a contact point 8 on the top surface of the tip, which is mounted on the mounting part 6 of the base 1 via an insulator 7. , a movable contact plate 11 made of a spring plate that has a contact 10 in contact with the contact 8 on the lower surface of the tip and is always biased downward is mounted at the base facing each other, and is further mounted on the mounting part 6. A base of a bimetal 12 is attached to the top surface of the bimetal 12, and a pusher 13 is attached to the upper surface of the tip of the bimetal 12, facing the extension of the tip of the movable contact plate 11.

Further, a support frame 14 is mounted on the mounting portion 6 via an insulator 7, and an adjustment shaft 15 is screwed onto this support frame 14 so as to be able to move up and down. Board 1
A pusher 16, such as an insulator, is attached to the adjusting shaft 15 and abuts on the fixed contact plate 9, and a locking groove 17 in the diametrical direction is formed in the upper end surface of the adjusting shaft 15.

A dial 19 is provided on the support portion 18 of the handle body 4 so as to be rotatable about the adjustment shaft 15.
A fitting hole 20 through which the adjustment shaft 15 is inserted is bored in the center of the dial 19, and a plurality of locking portions 21 are provided in an annular shape around the fitting hole 20 on the upper end surface of the dial 19. A locking groove 22 is formed between each locking portion 21 and protrudingly provided at intervals.

Then, the intermediate portion of the locking piece 23 is fitted into the locking groove 17 of the adjustment shaft 15 so as to be movable up and down, and both ends of the locking piece 23 are fitted into the pair of opposing locking grooves 22. Thus, the adjustment shaft 15 and the dial 19 are fixed.

Note that a nameplate 24 is attached to the upper surface of the dial 19.

The nameplate 24 displays a rotation angle on a temperature scale that is equal to a rotation angle set by a stopper mechanism (not shown) between the support portion 18 and the dial 19.

In such a configuration, when the heating element 2 of the base 1 is energized and the base 1 is heated to the set temperature, the bimetal 12 of the automatic temperature controller body 5 curves upward, and the pusher 13 acts as a movable contact. By pushing the plate 11 upward, the contact 10 is separated from the contact 8 of the fixed contact plate 9, the electricity to the heating element 2 is stopped, and when the temperature of the base 1 becomes lower than the set temperature, the bimetal 12 returns downward. Then, the contacts 8 and 10 come into contact and the heating element 2 is energized.

Also, by rotating the dial 19, the adjustment shaft 15 is rotated via the locking piece 23, and is moved up and down by the screw connection of the support frame 14, and the position of the fixed contact plate 9 is adjusted up and down with the pusher 16. and adjust the set temperature.

Next, a case will be described in which the operating temperature is finely adjusted in the production process.

First, the dial 19 is rotated in the high temperature setting direction until it stops, the adjustment shaft 15 is rotated and moved up and down by the adjustment jig engaged with the locking groove 17, and the fixed contact plate 9 is moved up and down. After adjusting the operating temperature, the locking piece 23 is fitted into the locking groove 17 of the adjustment shaft 15 and the corresponding locking groove 22 of the dial 19 to fix the adjustment shaft 15 and the dial 19.
Attach nameplate 24.

According to the present invention, the temperature setting can be adjusted by changing the position of the locking piece fitted between the locking groove of the adjustment shaft and the corresponding pair of locking grooves of the dial. Therefore, temperature control in the production process can be easily performed using low-cost parts.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view showing an example of the device of the present invention;
The figure is a plan view of the main part. 5...Temperature adjustment device main body, 15...Adjustment shaft, 17...Latching groove, 19...Dial, 22...Engagement Stop groove, 23...Latching piece.

Claims (1)

[Scope of utility model registration request] An adjustment shaft that is provided to change and adjust the operating temperature of the temperature adjustment device body and has a locking groove formed on the end face, a rotatably supported dial whose center part is inserted into the adjustment shaft, and an end face of this dial. a plurality of locking grooves provided at predetermined intervals in an annular shape centered on the adjustment shaft; and a pair of locking grooves on the dial facing each other, the intermediate portions of which are fitted into the locking grooves of the adjustment shaft; and a locking piece having both ends fitted together.