JPH0321299A - Iron - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a safety device for an iron.

BACKGROUND OF THE INVENTION Conventionally, an iron equipped with a safety device has a heater 2 and a thermistor 3 provided on the base 1 of the ironing surface, and a handle 4 of the iron that is electrically connected to the thermistor 3, as shown in FIG. A temperature detecting section 5 and an operation detecting device 6 for detecting an ironing operation and a stoppage of the ironing operation are provided. Furthermore, a control section 7 was provided at the rear of the iron to turn on and off electricity to the heater using the temperature detecting section 5 and the operation detecting device 6.

The control section 7 cuts off the power to the heater after a certain period of time after receiving a signal from the motion detection device 6 to stop the rear ironing operation, and when the heater is in a stationary state other than the ironing operation. The power supply was cut off to prevent fires and scorching of clothing caused by leaving the iron unattended.

Would you like to discuss the above motion detection device in more detail? For example, Japanese Patent Application Laid-open No. 52-155294 discloses a device that detects whether the iron is moving or stationary by observing the movement of the ball using a light source.

According to this device, two states can be detected: a state in which the base of the iron is stationary downward, and a moving state in which the iron is being used for ironing operations.

Also, Japanese Utility Model Application Publication No. 59-37098, and Japanese Patent Application Publication No. 59-37098
Publication No. 9-85700 discloses an iron that detects the condition of an iron using a mercury switch. This also detects two states: a moving state where the iron is being used in an ironing operation, and a stationary state.

Problems to be Solved by the Invention However, with this type of structure, if the iron is left standing on its own during a short break during ironing work, or if the iron is left unattended in that state due to forgetting to turn it off, Since it is not possible to detect the difference between the standing standstill state and the state where the base of the iron is at rest facing downwards, the power to the heater can only be cut off after a certain period of time regardless of which state the iron is at rest. The problem was that I couldn't do it.

In other words, by detecting changes in a movable body such as a ball or mercury in response to the movement of the iron, the above-mentioned detection device repeatedly turns the switch on and off in response to the movement of the iron when the iron is in use. Since the timer means is reset, the heater circuit continues to be energized.However, when the iron is not in use, the movable body is stationary and the timer means is not reset, so the heater circuit is not energized after a certain period of time. is blocked.

However, during ironing work, in addition to moving the iron while using it, there is also the action of adjusting the shape of the clothes, and during such short breaks, the iron is placed in a free-standing state, and during ironing work, the iron is not used. The action is repeated.

The detection device detects that the iron is in a stationary state when it is placed in a free-standing state, and cuts off the power to the heater circuit after a certain period of time, but the power is cut off during short breaks during use. The device is set to shut off after a relatively long period of time to prevent this from occurring.

However, the stationary state when the iron is not in use includes the above-mentioned stationary state in which the iron stands on its own, as well as when the movement of the iron is stopped during use, or when the iron is placed in a free-standing state. When an iron is left lying flat due to an unexpected accident, it may be in a stationary state with its base facing downwards, and in such a stationary state, it is necessary to immediately cut off the power to the heater circuit.

In other words, if it is impossible to distinguish between the stationary state in which the iron stands on its own and the state in which it stands still with the base of the iron facing downward, there is no risk of electricity being cut off during short breaks during use. The heater circuit is cut off after a long period of time, and it is not possible to safely cut off the power to the heater circuit depending on the different resting states of the iron.

Accordingly, an object of the present invention is to obtain an iron that can safely cut off electricity to the heater circuit depending on the stationary state of the iron.

Means for Solving the Problems And, in order to achieve the above object, the present invention has three different modes: one in which the iron stands on its own and stands still, one in which it stands still with the base of the iron facing downward, and another in which the iron stands still while ironing. Detects three states in which the iron is moving,
The iron is equipped with a timer means for controlling energization to the heater according to the output wire from the detection means which outputs different signals depending on the state, and the detection means detects a state in which the iron is independent and stationary. When the iron is stationary with the base facing downward, the power to the heater circuit is cut off at the second time. At the same time, a second time during which power supply to the heater circuit is cut off is set to be shorter than the first time.

action The effect of this technical means is as follows.

In other words, when the iron is stationary with the base facing downwards, the base, which is heated to a high temperature, is in contact with the floor, clothing, etc., so it can be safely shut off in a short time. .

In addition, when the iron is standing on its own, it should be shut off for a longer time than when it is stationary with the base facing downwards, in consideration of cases such as when shaping clothes during a short break during ironing. This eliminates the problem of the heater circuit being shut off during short breaks, causing the temperature to drop and causing problems with ironing, and even if you forget to turn it off mid-way through the ironing process, the heater circuit is shut off, preventing high temperatures. This makes it possible to obtain a safe iron that will not be left unheated for long periods of time.

EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings. In FIG. 1, reference numeral 1 denotes a base heated by a heater 2, and a thermistor 3 is provided to detect the temperature of this base. Reference numeral 4 denotes a handle provided with a temperature detection section 5 electrically connected to the thermistor 3 and a detection device 8 for detecting the state of the iron.
A control circuit 9 is provided for controlling energization to the heater by means of a detection device 8 and a detection device 8.

Next, the detection device 8 will be explained with reference to FIGS. 2 and 4. The detection device 8 consists of a cylinder 10, an electrode part 11 provided at one end of the cylinder 10, and mercury 12 which is a conductor movable in the cylinder lO.
has two electrodes, and the movement of the mercury 12 inside the cylinder 10 makes the two electrodes conductive and disconnected.
Each electrode of the book is connected to a control circuit 9.

This detection device 8 is installed so as to form an angle α with respect to the horizontal direction, and this angle α is determined when the iron is operated during ironing work.
The range is determined within which the mercury 12 can move within the cylinder 10.

Therefore, when the iron is placed in a free-standing state, the mercury 12 moves toward the electrodes 11 and stops, as shown in FIG. 4(a), and the two electrodes 11 become electrically connected. Also,
When the ironing operation is stopped with the base 1 of the iron facing downward, the mercury 12 moves to the end opposite to the electrode 11 and stops, as shown in FIG. is in a blocked state. Furthermore, base 1
When the iron is in a moving state when ironing is being performed with the iron facing downward, the iron is shown in Figure 4 (C).
is moved in the direction of the arrow in the cylinder 10 by the movement of the iron, and the electrode 11 is repeatedly brought into a conductive state and a disconnected state.

Next, the operation of the structure of this embodiment will be explained. First, when the iron is moved from a moving state where the iron is ironing with the base 1 facing downward, to a state where the iron stands on its own, the detection device 8 detects the electrode 1 as shown in FIG. 4(a).
1 is maintained in a conductive state. Therefore, if this state continues for a time t1 as shown in FIG. 3(a), the control circuit 9 automatically
cuts off power to the heater circuit.

Also, when using the base 1 while ironing,
When the movement of the iron is stopped with the iron facing downward, or when the iron placed in a free-standing state falls down due to an unexpected accident, the detection device 8 switches the electrode 11 to the cutoff state as shown in FIG. 4(b-). to hold. Therefore, Fig. 3(b)
If this state continues for a time t2, the control circuit 9 automatically cuts off the power supply to the heater circuit.

When the iron is in motion during ironing work, the detection device 8 repeatedly cuts off and conducts.
Since tl and t2 are set in advance so that this period is less than the time tl and t2, the control circuit 9 does not cut off the power supply to the heater circuit.

In this way, the iron of the present invention has three states: a state where the iron stands on its own and stands still, a state where the iron stands still with the base facing downward, and a state where the iron moves due to ironing. By detecting the detection and outputting different signals depending on the state, when the iron stands on its own and is stationary, the power to the heater circuit is cut off after t1 hours, and the iron is stationary with the base facing downward. In this state, the power supply to the heater circuit is cut off after time t2. Then, while the iron is moving during ironing, the heater circuit continues to be energized.

Therefore, if the above t1 is about 10 to 15 minutes, t2
By setting the time to about 1 to 2 minutes, when the base l, which is heated to a high temperature, is left facing downward, the power to the heater circuit can be cut off in a short time. When the iron is standing on its own, it should be shut off for a longer period of time than when it is stationary with the base facing downward, in consideration of cases where clothes are being shaped during a short break during ironing. This eliminates the problem of the heater circuit being cut off during short breaks, causing the temperature to drop and causing problems with ironing, as well as cutting off the heater circuit and preventing high temperatures even if you forget to turn it off in the middle of ironing. This results in a safe iron that will not be left unheated for long periods of time.

In the above embodiment, the detection device 8 is brought into conduction state while the iron is standing on its own, but the reverse may be possible. In short, any device that can detect three states and output different signals depending on the state is sufficient.

Effects of the Invention As described above, the present invention has the advantage of reducing the time during which power is cut off to the heater circuit when the iron is standing still with its base facing down, to the time when the iron is standing still and standing on its own. By setting the time to be shorter than the time to cut off the electricity, it is possible to prevent damage to clothing and the like due to heat and the risk of fire, thereby increasing safety.

In addition, when the iron stands on its own and stands still, it prevents the temperature from dropping due to the heater circuit being cut off during short breaks during ironing, without impairing practical usability. Its effects are enormous, such as being able to solve the seemingly contradictory problem of ensuring safety against neglect all at once.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the main parts of an iron showing an embodiment of the present invention, Fig. 2 is an explanatory diagram of the detection device of the iron, Fig. 3 is an explanatory diagram of the operation of the control circuit of the iron, and Fig. 4 is an explanatory diagram of the operation of the control circuit of the iron. FIG. 5, which is an explanatory diagram of the operation of the detection device, is a sectional view of the main part of a conventional iron. 8... Detection device (detection means), 9... Control circuit (control means).

Claims (1)

[Claims] A base heated by a heater, a control means for controlling energization to the heater circuit, and a state in which the iron stands on its own and stands still, a state in which the iron stands still with the base facing downward, and a state in which the iron is ironed by ironing. comprising a detection means for detecting three states in which the heater is moving and outputting a different signal depending on the state, and a timer means for controlling energization to the heater according to the output signal from the detection means, When it detects that the iron is standing still on its own, the power to the heater circuit is cut off at the first time, and when it is detected that the iron is at rest with the base facing downward, it cuts off the power to the heater circuit at the second time. An iron in which power to the heater circuit is cut off for a time of , and a second time to cut off power to the heater circuit is set to be shorter than the first time.