JPS5935199Y2 - Electric iron lead plate attachment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reed plate mounting device that improves the reed plate mounting structure incorporated into an electric iron.

The electric iron is equipped with a temperature adjustment mechanism for adjusting the heating base to a set temperature, which has a pair of lead plates.

These lead plates are attached to an insulating board in advance to form a lead plate assembly, and in this state, the insulating board is
It is screwed between a pair of supporting parts protruding from the heating base.

In order to obtain reliable insulation properties for the insulating substrate, it is necessary to use a material that is relatively brittle against external forces, such as a silicon glass laminate.

Further, external force is repeatedly applied to the lead plate each time the temperature control device operates.

However, in the past, the insulating board was simply passed between supporting parts and secured with screws, and as a result, there was a risk that the insulating board could be inadvertently deformed or damaged by external forces applied to the lead board. there were.

The present invention was developed with this in mind, and its purpose is to use some of the existing parts to reinforce the insulating board and ensure that it does not deform or break over a long period of time. An object of the present invention is to provide a reed plate attachment device for an electric iron that can prevent the above problems.

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a heating base in which a heater 2 is embedded, a cover 3 is placed on the top surface of this base 1, and a handle body 4 is further provided on the top of this cover 3.

A temperature adjustment mechanism 5 is built into the upper surface of the heating base 1, and this mechanism 5 consists of movable and fixed contact plates 6, 7 and a bimetal 8.

Reference numeral 9 denotes a lead plate assembly component, which includes two sets of lead plates 11a, 11b and 12a arranged in parallel in two rows on an insulating substrate 10 such as a silicon glass laminate.

12b are attached via studs 13... and configured as an integral piece.

A pair of support parts 14, 14 consisting of protrusions are integrally formed on the upper surface of the rear end of the heating base 1, and a back plate is provided in the gap between the rear edge of the heating base 1 and the handle body 4 to close the gap. 15 are provided.

An upright piece 16 is provided at right angles to one side edge of this back plate 15.
Further, a horizontal plate-shaped reinforcing portion 1T is integrally formed on the side edge of this upright piece 16.

The reinforcing part 17 is connected to both of the supporting parts 14 and 140.

The insulating substrate 10 of the board assembly part 9 is connected to the reinforcing portion 1.
The hook is placed between the support parts 14 and 14 so as to be placed on the upper surface of the support part 7.

That is, the reinforcing part 17 is interposed between the insulating substrate 10 and the supporting parts 14, 14.

In this state, the tightening screws 18° 18 are screwed into each support portion 14, 14 from the upper surface of the insulating substrate 10, and by tightening these screws 18, 18, the lead plate assembly 9 is attached to the support portions 14, 14. It is fixedly installed.

The movable contact plate 6 of the temperature control mechanism 5 is connected to one end of the lead plate 11a, and the fixed contact plate 7 is connected to one end of the lead plate 12a.

The open end side of the fixed contact plate 7 is bent into a crank shape, and terminals 19 are provided at this bent portion, and terminals 20 are similarly provided at the open end portion of the movable contact plate 6, and these terminals 19 ,20
are in contact with each other due to the elasticity of each contact plate 6, 7, and this contact maintains the energizing circuit of the heater 2 in a closed state.

One end of the bimetal 8 is fixed to a projection 1a projecting from the upper surface of the heating base 1, and an insulator 21 is attached to the open end of the bimetal 8, and the insulator 21 faces the movable contact plate 6.

As the temperature of the heating base 1 rises, the bimetal 8 is deformed in a curved manner, and this deformation presses the movable contact plate 6 through the insulator 21, causing the terminals 19 and 20 to separate, and the power supply to the heater 2 is interrupted.

Then, as the temperature of the heating base 1 decreases, the deformation of the bimetal 8 is restored, and the terminals 19 and 20 come into contact again, and by repeating this process, the temperature of the heating base 1 is kept constant.

An operating body 24 is provided at the upper end of the handle body 4 and is connected to the open end of the fixed contact plate 7 via an interlocking rod 23. By operating this operating body 24, the fixed contact plate 7 and the movable contact plate The temperature of the heating base 1 can be set to a desired temperature by moving the heating base 6 up and down.

The handle body 4 includes a bottom plate 25 facing the cover 3, and this bottom plate 2.
5, and a main body 26 attached to the upper part of the bottom plate 2.
A water tank 27 is configured between the main body 26 and the main body 26 .

The bottom plate 25 is molded from a thermosetting resin with excellent heat resistance in order to resist the radiant heat of the heating base 1.
6 is molded from inexpensively available thermoplastic resin.

A stepped portion 28 is integrally provided on the rear upper surface of the bottom plate 25.

The lead plates 11b and 12b of the lead plate assembly 9 are bent so as to stand up at right angles, and the upright parts are respectively connected to the bottom plate 2.
5 and extends along the side surface of the stepped portion 28,
Connection screws 29 (only one is shown) are attached to each of the extending portions, and the peripheral surfaces of the distal ends of these screws 29 are in contact with the upper surface of the stepped portion 28 .

These connection screws 29 are for connecting lead wires such as power cords to the lead plates 11b and 12b, and the connection work is performed with the rear cover 30 of the handle body 4 removed.

During this work, even if a force is applied to the lead plates 11b and 12b to push them down, the connection screws 29
Since the leading end circumferential surfaces of the lead plates 11b and 12b are in contact with the upper surface of the stepped portion 28, the lead plates 11b and 12b do not move at all, and no unnecessary force is applied to them. Therefore, deformation and damage to the lead plates 11b and 12b can be reliably prevented. can.

The step portion 28 is integrally formed with the bottom plate 25 for the following reason.

In other words, the step part 28 is thicker than other parts, but if such a thick part is molded integrally with other parts using thermoplastic resin like the main body 26, cracks may occur due to so-called sink marks during molding. However, such a phenomenon is rare with thermosetting resin, and for this reason, a stepped portion 28 is formed on the bottom plate 25 that uses thermosetting resin.

The insulating substrate 10 of the lead plate assembly part 9 is connected to this and the support part 1.
The insulating substrate 10 is screwed to the supporting parts 14 and 14 with a reinforcing part 17 interposed between the insulating substrate 10 and the insulating substrate 10, so that the insulating substrate 10 is constantly reinforced against external forces and reliably prevents deformation and damage. be done.

Since the reinforcing portion 17 is integrally formed with the back plate 15, there is no increase in the number of parts, and therefore it can be assembled easily and inexpensively.

As explained above, according to the present invention, an existing component, that is, a part of the back plate is used to reinforce the insulating board, and deformation and damage thereof can be reliably prevented over a long period of time. It is something to play.

[Brief explanation of the drawing]

Fig. 1 is an overall sectional view showing an embodiment of the present invention, Fig. 2 is the same (a perspective view of the main parts), and Fig. 3 is a plan view of the temperature control mechanism. Heating base, 4... Handle body, 9
...Lead plate assembly parts, 10...Insulating substrates, 11a, 11b. 12a + 12b...Lead plate, 14...
... Support part, 15 ... Back plate, 17
...Reinforcing agent, 18...Tightening screw.

Claims (1)

[Scope of utility model registration request] A pair of support parts protruding from the heating base, a back plate that closes the gap between the rear end of the heating base and the handle body, and a hook that is integrally formed with the back plate and extends between the pair of support parts. A reinforcing part and a lead plate assembly assembled by attaching a lead plate to an insulating board, the reinforcing part being interposed between the insulating board of the lead board assembly and the pair of supporting parts. 1. A lead plate mounting device for an electric iron, characterized in that the lead plate mounting device for an electric iron is mounted by inserting a tightening screw into each support portion from an insulating substrate in the state of the lead plate.