CN2330685Y - Automatic current-cut-off protection device for electric iron - Google Patents

Abstract

The utility model relates to an automatic electricity failure protection device for an electric iron. The utility model comprises a detection controller which comprises a hollow closed box body, and a photoelectric control switch. Both sides of the photoelectric control switch are provided with a light transmitting element and a light receiving element which are arranged correspondingly. The inner part of the box body is provided with a sheet pendulum bob, wherein, the central bottom part of which is dented and provided with a slot, and a connecting rod is arranged above the pendulum bob. The upper end of the connecting rod is pivoted with the box body, and the sheet pendulum bob is overhung between the light transmitting element and the light receiving element. The photoelectric control switch is a photocoupler. A latch is convexly arranged below the box body. The swinging direction of the sheet pendulum bob is parallel to the long direction from the front end to the back end of the electric iron.

Description

The automatic power-off protection device of electric iron

The utility model relates to a kind of electric iron, and the automatic power-off protection that particularly relates to a kind of electric iron is put.

General electric iron is the base that utilizes its inner set thermal energy conduction to a heat conduction that thermostat produced, use the pressing clothing, but, if in use, do not notice flatiron is put on what clothing or other inflammable articles, and nobody at the scene, will be ignited in the short time and burn clothing or initiation fire.

For solving the above problems, someone produces a kind of electric iron with auto-power-off device, as Fig. 1, shown in 2, it is the auto-power-off device of the 28279 No. three flatiron of the novel patent announcement in Taiwan, this flatiron has the base of a heat conduction, one body is set on this base, this body interior is provided with the heater of a constant temperature, above body, be provided with the lever of an inner tool accommodation space, this auto-power-off device is provided in a side of the inside of lever, comprise a photoelectric control switch 1, one first delay control circuit 2, one second delay control circuit 3, the on-off circuit 5 of one heating source and a power supply circuit 6, photoelectric control switch 1 is to be in the box body 11 of hollow sealing one to be equiped with a steel ball 14, and the bottom surface of box body 11 inside is an inclined plane 110, the both sides of box body 11 on the bottom surface is tilted to are respectively equipped with an optical transmitting set 12 and an optical receiver 13, change the storing state of box body 11 by mobile flatiron, drive that steel ball 14 is not blocked or the reception of blocking light receiver optical signal that 13 pairs of optical transmitting sets 12 are launched, form the photoelectric control switch 1 of tool on off state, to reach the purpose that control heater 4 opens and closes.

Though; can make flatiron have the function of automatic power-off protection by said structure; but; but still has following shortcoming in the use: because photoelectric control switch 1 is to drive steel ball 14 slippage on inclined plane 110 by the flatiron in moving; the optical signal that steel ball 14 interrupted blocking light radiated elements 13 are launched; therefore; steel ball 14 fastens sometimes easily between box body 11 inside top surface and inclined plane 110; photoelectric control switch 1 is normally start just; therefore; use dangerous; and this photoelectric control switch 1 is to use a spherical steel ball 14; so, when steel ball 14 want conveniently to roll and fully the optical signal launched of blocking light radiated element 12 must have certain weight and volume when improving its sensitivity; so box body 11 must increase volume and take up room; can't be installed in the narrow and small accommodation space of lever, must enlarge the accommodation space of lever again, and increase cost of manufacture.

The purpose of this utility model provides a kind of automatic power-off protection device that has than the electric iron of Cui security and convenience at what.

For achieving the above object, the utility model is taked following measure:

The electric iron that the utility model relates to; have a body and a heat-conducting base; this body interior is provided with a constent temperature heater; above body, be provided with the lever of an inner tool accommodation space; this automatic power-off protection device is located at body or lever inside; it comprises that one detects controller; one oscillating circuit; one CPU; one load drive control circuit and a power-supply circuit; by automatic power-off protection device to reach the purpose that control heater opens and closes in good time; this detects controller is to be provided with sheet pendulum to hang down in the box body of hollow sealing; the vertical recessed sky of center bottom of this sheet pendulum is provided with a slotted eye; and has a connecting rod up; small end can be articulated with box body; make in the vertical what box body that freely swings of sheet pendulum; it is parallel with flatiron and establish that sheet pendulum hangs down; in addition; more be provided with a photoelectric control switch in the box body; the photoelectric control switch both sides have a corresponding photocell of establishing and a light receiving element; and photocell and light receiving element are to hang down parallel with the sheet pendulum and establish; make the sheet pendulum hang down and freely to swing what between the two; when keeping flat, flatiron make sheet pendulum hang down what when static; described slotted eye position what between the two; and can't cover this photocell; and directly put and when sheet pendulum being hung down swing to maximum angle when flatiron; shield light radiated element fully; therefore; when detecting controller along with flatiron is directly put; keep flat or front and back move around when different location status; the sheet pendulum hangs down capable of blocking; do not block or optical signal that interrupted blocking light radiated element is launched; the voltage signal that makes photoelectric control switch send different conditions is given CPU; and via CPU differentiation back and from the specific voltage signal of its output generation; use the control load drive circuit; to reach the switching of in good time control heater; in addition, CPU more can be by the formed chronograph reference signal of oscillating circuit the time of control output end output voltage signal.

The utility model is taked following concrete structure:

The automatic power-off protection device of electric iron of the present utility model; comprise that one detects controller; detect controller and comprise the box body and a photoelectric control switch of hollow sealing, the photoelectric control switch both sides have corresponding and a photocell and a light receiving element that establish, and its feature is at what:

Be provided with sheet pendulum in the described box body and hang down, the vertical recessed sky of center bottom of sheet pendulum is provided with a slotted eye, and is provided with a connecting rod up, and small end and box body are articulated, and the sheet pendulum overhangs between what photocell and light receiving element.

The automatic power-off protection device of described electric iron, its feature are at what:

Described photoelectric control switch is a photo-coupler.

The automatic power-off protection device of described electric iron, its feature are at what:

Described box body below is convexly equipped with a trip.

The automatic power-off protection device of described electric iron, its feature are at what:

The parallel what of swaying direction that described sheet pendulum hangs down is by flatiron front end vertical to the rear end.

Be elaborated below by Cui embodiment and accompanying drawing automatic power-off protection device to electric iron of the present utility model, in the accompanying drawing:

Fig. 1 is the circuit box schematic diagram of the auto-power-off device of No. 282793 flatiron of the novel patent announcement in Taiwan.

Fig. 2 is the schematic perspective view of photoelectric control switch of the auto-power-off device of No. 282793 flatiron of the novel patent announcement in above-mentioned Taiwan.

Fig. 3 is detect the schematic diagram that controller be installed in flatiron inside of the utility model than Cui embodiment.

What Fig. 4 was the utility model than Cui embodiment detects the controller exploded perspective view.

Fig. 5 detects the internal actions schematic diagram of controller when to be the utility model than the electric iron of Cui embodiment keep flat.

Fig. 6 is the internal actions schematic diagram that the utility model detects controller when directly putting than the electric iron of Cui embodiment.

Fig. 7 is the circuit box schematic diagram of the utility model than Cui embodiment.

Fig. 8 is the circuit diagram of the utility model than Cui embodiment.

As Fig. 3; 4; 7; shown in 8; the automatic power-off protection device of electric iron of the present utility model; its flatiron has the base of a heat conduction; one body is set on base; this body interior is provided with the heater of a constant temperature; above body, be provided with the lever of an inner tool accommodation space; this automatic power-off protection device is the inside that is installed in this body; it comprises that one detects controller 20; one oscillating circuit 30; one CPU 40; one load drive control circuit 50 and a power-supply circuit 60; above-mentioned member is same as the prior art; so no longer describe in detail, different is:

Detecting controller 20 is made up of a box body 21, vertical 22, one photoelectric control switch 23 of sheet pendulum and a front shroud 24.

Box body 21 front ends are the cuboid that is open shape, its inner recessed sky is formed with an accommodation space 211, accommodation space 211 epimeres laterally are convexly equipped with an axostylus axostyle 212 that is step shape, and box body 21 bottom center are provided with a storage tank 213, and at box body 21 back wall faces near convexing with a fixing die holder 214 above the storage tank 213.

It 22 is parallel with flatiron and establish that sheet pendulum hangs down, its center bottom is arranged with a slotted eye 221, and an one-body molded up connecting rod 222, connecting rod 222 upper end central authorities are provided with a circular hole 223, the external diameter of circular hole 223 is the external diameters in bigger what axostylus axostyle 212 stage casings, so that what connecting rod 222 can be nested with pivot joint with axostylus axostyle 212, sheet pendulum is hung down 22 can free in box body 21, swing, and the sheet pendulum hangs down 22 the parallel what of swaying direction by flatiron front end vertical to the rear end.

Photoelectric control switch 23 (being a photo-coupler (PHOTOINTERRUPTBR) in the present embodiment) is assembled in the pedestal on the fixing die holder 214, its both sides have correspondence and a photocell 231 and the light receiving element 232 established, and photocell 231 and light receiving element 232 are to hang down 22 parallelly and establish with the sheet pendulum, make sheet pendulum 22 betweens that can freely swing that hang down.

Front shroud 24 is winding plate bodys in box body 21 front sides, the position of its corresponding what axostylus axostyle 212 forms a protruding seat 241, protruding 241 central authorities are provided with an axis hole 242, make the leading portion of axostylus axostyle 22 can insert axis hole 242, and with the accommodation space 211 of sheet pendulum vertical 22 with photoelectric control switch 23 sealing what box bodys 21, front shroud 24 lower right corner convex with a trip 243, the direction when installing conveniently to distinguish box body 21.

Cooperate Fig. 5,6,7 and shown in Figure 8, when flatiron keeps flat, when making sheet pendulum hang down 22 place what inactive states, between 221 what photocells 231 of slotted eye and the light receiving element 232, and the optical signal that can't shield light radiated element 231 be sent, and directly put and make sheet pendulum hang down 22 when swinging to maximum angle when flatiron, shield light radiated element 231 fully, therefore, when detecting control 20 devices along with flatiron is directly put, keep flat or front and back different location status such as move around, sheet pendulum vertical 22 is capable of blocking, do not block or optical signal that interrupted blocking light radiated element 231 is launched, the voltage signal that makes photoelectric control switch 23 send different conditions is given CPU 40, and via producing specific voltage signal from its output after the single 40 yuan of differentiations of central authorities' processing, use control load drive circuit 50, and reach the switching of in good time control heater, in addition, CPU 40 more can be controlled the time of its output output voltage signal by oscillating circuit 30 formed chronograph reference signals.

In sum, the automatic power-off protection device of electric iron of the present utility model also has following effect except the purpose that can reach safeguard protection:

One. by the assembling that detects controller 20 each member as can be known; the connecting rod 222 of sheet pendulum vertical 22 is to adopt the mode that articulates; the situation that not only can avoid the steel ball 14 of auto-power-off device in the past to be fastened and lose efficacy more can increase the sensitivity of automatic power-off protection device.

Two. the price of each assembly that detects controller 20 of the present utility model is low, therefore can reduce the cost of product, and the shared volume of each element is little, is convenient to be assembled in detect in the controller 20.

Claims (4)

1. the automatic power-off protection device of an electric iron; comprise that one detects controller; detect controller and comprise the box body and a photoelectric control switch of hollow sealing, the photoelectric control switch both sides have corresponding and a photocell and a light receiving element that establish, and its feature is at what:

Be provided with sheet pendulum in the described box body and hang down, the vertical recessed sky of center bottom of sheet pendulum is provided with a slotted eye, and is provided with a connecting rod up, and small end and box body are articulated, and the sheet pendulum overhangs between what photocell and the light receiving element.

2. the automatic power-off protection device of electric iron as claimed in claim 1, its feature are at what:

Described photoelectric control switch is a photo-coupler.

3. the automatic power-off protection device of electric iron as claimed in claim 1, its feature are at what:

Described box body below is convexly equipped with a trip.

4. the automatic power-off protection device of electric iron as claimed in claim 1, its feature are at what:

The parallel what of swaying direction that described sheet pendulum hangs down is by flatiron front end vertical to the rear end.

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