JP2905888B2 - Safety switches and appliances with safety switches - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety switch and a safety switch which are automatically turned off when an electric appliance such as a stove, a hot air heater, a white light or the like falls, to prevent danger due to overheating. The present invention relates to the improvement of electric appliances with attached parts.

[0002]

2. Description of the Related Art Conventionally, electric appliances such as a stove, a hot air heater, a white lamp and the like which generate heat are provided with a switch body 51 attached to the bottom of a stove body 55 as shown in FIG. A safety switch 53 consisting of a button body 52 protruding from the switch body 51 is attached.
Inside the switch 53, there is provided a switch unit 56 that can connect or disconnect the electric circuit of the heater of the stove body 55.

[0003] The stove with a safety switch which is generally used and having the above-described structure, is normally used, that is, in a state where the stove body 55 is installed vertically, a button body 52 is provided on the bottom side of the stove body 55. Is protruded, the lower part thereof is pressed by the floor surface 58 or the like, and the button body 52
Is pushed into the inside of the switch body 51, the switch section 56 is connected by the upper end of the button body 52, and the heater of the stove body 55 is energized.

On the other hand, this stove with a safety switch is
For example, if the user accidentally falls due to a disaster or mischief such as an earthquake, the falling causes the pressing of the button body 52 from the floor surface 58 to be released, and the portion of the button body 52 that was stored in the switch body 51 is removed. The switch protruding to the outside and being pressed by the tip of the button body 52 is automatically cut off, the power supply to the heater is stopped, and it is possible to prevent the stove from generating heat while falling down and causing a fire or the like.

[0005]

However, for example, furniture or other objects fall or fall near the stove which has fallen during an earthquake or the like, and a button is pressed, or a button in a state where an infant or the like has fallen for mischief. The body may be pressed, but in such a case, the switch 56 is connected while the stove is overturned, and there has been a problem that the purpose as a safety switch cannot be sufficiently achieved.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and provides a safety switch and a safety switch that can surely cut off the power supply of an electric appliance to prevent danger when it is accidentally fallen down. It is an object to provide an electric appliance with a switch.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and the first to fifth aspects of the present invention relate to a safety switch, and the first to fifth aspects of the present invention. Invention 5 relates to an electric appliance with a safety switch.

[0008] The first to fifth inventions of the present application,
The switch body 1a includes a switch body 1a provided with a switch unit 6 for switching between energization and disconnection, and a button body 2 provided at one end of the switch body 1a so as to be able to move back and forth. When the button body 2 is pressed, the switch body 6 is connected, and when the button body 2 protrudes, the switch body 6 is cut off.
To the switch body 1a so that the button body 2
The present invention relates to a safety switch provided with locking means for preventing movement into the switch body 1a. And the first
In the safety switch according to the present invention, the locking means includes a locking body 4 which releases the fixing of the button body 2 to the switch body 1a by moving by its own weight. provide. In the second invention, a small ball as a locking body 4 for locking the button body 2 to the switch body 1a side by the presence of the locking means extending between the button body 2 and the switch body 1a. The present invention provides a safety switch characterized in that the small ball 4 moves to release the fixing of the button body 2 to the switch body 1a. According to a third aspect of the present invention, in the safety switch according to the first or second aspect, the locking means includes grooves 3a and 3b formed on an outer peripheral surface of the button body 2 and an inner peripheral surface of the switch body 1a, respectively. A locking member 4 housed in the grooves 3a, 3b, and one of the grooves 3a, 3b is provided at a depth at which the locking member 4 is completely housed to allow the button body 2 to move. The other is provided at a depth at which a part of the locking body 4 protrudes, and the two groove portions 3a, 3b are provided so as to face each other at a predetermined protruding position of the button body 2 so as to coincide with each other. When the button body 2 is at one end or substantially downward, the locking body 4 is housed in one of the grooves 3a, and
When the one end side is substantially horizontal, the opposing grooves 3a, 3b are formed in an inclined shape so that the locking body 4 in the groove 3a moves to the other groove 3b to prevent the button body 2 from moving. That are characterized by In the fourth invention of the present application, the locking means includes a groove 20 provided on a peripheral surface of the button body 2, a locking body 16 having a locking hole 21 through which the button body 2 is inserted, and a button. Biasing means 17 for biasing the locking body 16 so that the peripheral edge of the locking hole 21 of the locking body 16 is engaged with the groove 20 at a predetermined projecting position of the body 2 so as to be freely engaged and disengaged. Provide a safety switch.
In the fifth invention of the present application, the locking means includes a projection 24 provided on the peripheral surface of the button body 2 so as to be able to move back and forth, and an urging means 23 for urging the projection 24 in a direction in which the projection 24 projects. The projection 24 is projected from the inner peripheral surface of the button body 2 at a predetermined projection position of the button body 2, and the button body 2 is locked to the switch body 1a by the projection 24. A safety switch is provided.

In each of the sixth to tenth aspects of the present invention, a switch body 1a provided with a switch section 6 capable of switching between energization and disconnection thereof, and an end portion capable of freely retracting are provided in the electric apparatus body 5. A safety switch 1 including a button body 2 attached to the switch body 1a is attached, and when the electric appliance body 5 is used, the button body 2 is pressed inside the switch body 1a to thereby switch the switch unit 6
When the button body 2 protrudes when the electric appliance body 5 falls, the switch unit 6 is cut off. In the electric appliance with a safety switch, the button body 2 is switched at a predetermined projecting position of the button body 2. The present invention relates to a device provided with locking means for releasably locking the main body 1a and preventing the switch main body 1a from moving into the switch main body 1a.
In the sixth invention of the present application, the locking means includes a locking body 4 which is released by its own weight to release the fixing of the button body 2 to the switch body 1a. Provide an electric appliance with a safety switch. In the seventh invention of the present application, the locking means is provided as the locking body 4 for locking the button body 2 to the switch body 1a side by being present between the button body 2 and the switch body 1a. It is provided with a small ball 4 and this small ball 4
Is provided to release the fixing of the button body 2 to the switch body 1a by the movement of the button body 2. According to an eighth aspect of the present invention, in the electric appliance with a safety switch according to the sixth or seventh aspect, the locking means includes a groove 3a formed on an outer peripheral surface of the button body 2 and an inner peripheral surface of the switch body 1a, respectively. , 3b, and a locking body 4 housed in the grooves 3a, 3b, and one of the two grooves 3a, 3b has a depth at which the locking body 4 is completely housed to allow the button body 2 to move. And the other is provided at a depth at which a part of the locking body 4 protrudes, and the two groove portions 3a and 3b are provided so as to face each other at a predetermined protruding position of the button body 2. When the button body 2 is at one end or substantially downward,
When the locking body 4 is housed in one of the grooves 3a and one end of the button body 2 is substantially horizontal, the locking body 4 in the groove 3a moves to the other groove 3b to move the button body 2. In order to prevent this, a feature is provided in which both opposed groove portions 3a, 3b are formed in an inclined shape. Ninth of the present application
In the present invention, the locking means comprises a groove 20 provided on the peripheral surface of the button body 2, a locking body 16 having a locking hole 21 through which the button body 2 is inserted, And a biasing means for biasing the locking body so that the periphery of the locking hole of the locking body is removably fitted into the groove at the projecting position. Electrical appliance with a safety switch. In the tenth invention of the present application, the locking means includes a projection 24 provided on the peripheral surface of the button body 2 so as to be able to move back and forth, and an urging means 23 for urging the projection 24 in a direction in which the projection 24 projects. And the projection 2
4 is provided with a safety switch characterized in that at a predetermined projecting position of the button body 2, the projection 24 projects from the inner peripheral surface of the button body 2, and the projection 24 locks the button body 2 to the switch body 1a. Provide electrical appliances.

(Operation) According to the present invention, the button means 2 has a locking means projecting from the switch main body 1a when the electric appliance main body 5 falls down.
To prevent movement into the switch body 1a.
Therefore, once the electric appliance body 5 has fallen over, even if the button 2 is pressed, it cannot be moved into the switch interior 2 by the locking means, and the button body 2 does not connect the switch section 6. Therefore, even when the button body 2 that is inadvertently protruded after the electric appliance body 5 falls, there is no possibility that the button body 2 is pushed into the switch main body 1a and the electric appliance body 5 is energized.

[0011] Further, the locking means includes a groove formed on an outer peripheral surface of the button body 2 and an inner peripheral surface of the switch body 1aa.
When the main body 5 is installed, one end side of the button body 2 faces downward when the lock body 4 is composed of the lock bodies 4a and 3b and the lock bodies 4 housed in the grooves 3a and 3b. One groove
Since the button body 2 is completely housed in the button 3a, the button body 2 can be pressed freely.

Further, when the electric appliance falls and one end of the button body 2 is turned sideways, the pressing force of the button body 2 is released, and the button body 2 projects to a predetermined projecting position.
At this time, the grooves 3a and 3b coincide with each other, and the locking body 4 moves to the other groove 3b. Locking body 4 housed in other groove 3b
Is that the small ball 4 is positioned between the switch body 1aa and the button body 2 so that the button body 2 is locked to the switch body 1a by moving a part thereof to the one groove portion 3b, so that the small ball 4 can be moved. Can not.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 (b) is a safety switch having a switch body 1a made of an electric appliance, for example, a synthetic resin attached to a stove as shown in FIG. 1, and the switch body 1a is as shown in FIG. Is attached to the bottom surface 5a of the stove body 5 by screws 25.

Reference numeral 2 denotes a cylindrical button body which is slidably fitted inside a cylindrical button housing portion 7 formed at a lower portion of the switch body 1a so that one end thereof protrudes. On the inner side of 1a), a storage portion 2b in which a bottomed cylindrical switch pressing portion 2a is slidably fitted is formed. A spring 10 is provided in the storage portion 2b and the switch pressing portion 2a, and the spring 10 urges the switch pressing portion 2a in a direction to protrude from the button body.

Reference numeral 6 denotes a switch unit provided at an upper portion inside the switch main body 1a and provided for switching connection or disconnection of an electric circuit for a heater of a stove. The switch unit 6 includes the switch pressing unit 2a. One terminal 11a having a switch piece 12 for urging the button 11 in the direction in which the button body 2 projects, and the other terminal 11b
Consists of When the switch pressing portion 2a presses the switch piece 12, the terminal 11a connected to the heater electric circuit (not shown) of the stove body 5 is connected to the lower end of the other terminal 11b, and the heater of the stove body 5 is heated. When the pressing force of the switch pressing portion 2a is released, the switch piece 12 resiliently forces the other terminal 11b.
, The current of the stove body 5 is cut off, and the power of the heater of the stove is turned off.

3a, 3b are the button body 2 and the switch body
One of the grooves 3a is formed in an annular shape over the entire outer peripheral surface of the button body 1 where the button housing portion 7 of the switch body 1a is located. The other groove 3b is formed in an annular shape on the inner peripheral surface side of the button storage portion 7 over the entire circumference.

That is, when the button body 2 does not come into contact with the pressing surface 8 such as a floor, the switch piece 12 is moved to the switch pressing portion 2a.
, The button 2 protrudes. At the predetermined projecting position of the button body 2, the two groove portions 3a and 3b are formed so that their openings are aligned and communicate with each other (FIG. 3).
(A) and (b)).

The groove 3a on the button body 2 side is formed deeper than the groove 3b on the button storage section 7, and at a predetermined projecting position of the button body 2, the groove 3a on the button body 2 is switched. The shape of the cavity located at one end of the button body 2 (below the button body 2 when the button body 2 is located in the vertical direction) with respect to the groove 3b on the side of the main body 1a and having the two grooves 3a and 3b communicating with each other is as follows: As shown in FIG. 3 (a), the cross section is formed in the shape of an inverted C-shape.

Reference numeral 4 denotes a small ball as a locking member made of SUS (stainless steel) or the like, one of which is housed in the grooves 3a and 3b. The depth of the groove 3a on the button body 2 side is
Is completely housed in the groove 3a so that the small balls 4 do not protrude from the groove 3a, and the depth of the groove 3b on the switch body 1a side is slightly smaller than this. However, when the small ball 4 is stored, at least the central portion of the small ball 4 is stored in the groove 3b and the small ball 4
Is formed to a depth such that a portion of the groove protrudes from the groove 3b.

In addition, in a normal use state in which the stove body 5 is installed vertically, the small balls 4 are provided in the groove 3a on the button body 2 side as shown in FIG. It is stored movably. The material of the small ball 4 is not limited to SUS. However, if the surface is not smooth due to rust or the like, it is difficult to roll or slide freely.

An annular stopper 9 is fitted on the peripheral edge of the button housing 7 of the switch body 1a, forms a part of the groove 3b, and has a function of sealing the shaft of the button body 2. In the member, since the outer peripheral surface is formed in a tapered shape having a slightly larger diameter toward the upper side, when fitted from below the button storage portion 7, it can be easily and reliably inserted with one touch, There is no risk of accidentally falling off.

Next, a case where the safety switch 1 having such a configuration is used will be described. First, when the stove main body 5 is installed vertically on the floor surface 8 and is normally used, one end of the button body 2 comes into contact with the floor surface 8 as shown in FIG. The button body 2 is a button storage unit 7
, That is, toward the inside of the switch body 1a.

Therefore, the button body 2 is housed inside the switch body 1a, and the switch pressing part 2a connected to the upper end of the button body 2 via the spring 10 is connected to the switch piece 12 of the switch part 6. Is pressed to connect the two terminals 11a and 11b, and a current flows through the switch unit 6. Accordingly, the heater of the stove main body 5 can be used as a stove by energizing and heating if the power is on.

When the button body 2 faces downward,
Since the two grooves 3a and 3b have an inverted C shape, the small ball 4 is completely housed in the groove 3a on the button body 2 side by its own weight, and the button body 2 can freely slide in the vertical direction. .

Next, when the stove body 5 falls down during a disaster such as an earthquake, as shown in FIG. 3, when the pressing of the button body 2 from the floor surface 8 is released, the switch piece 12 is released.
Is separated from the other terminal 11b by the elastic force and the current is cut off by the switch section 6. As a result, heating of the heater of the stove main body 5 can be stopped without turning off the original power supply of the stove main body 5, thereby preventing a fire or the like.

When the stove body 5 falls, the switch piece 12 pushes out the button body 2 together with the switch pressing portion 2a. However, since the small ball 4 is completely housed in the groove 3a on the button body 2 side. When the button body 2 moves with respect to the button storage section 7, there is no hindrance. Further, the small ball 4 housed at an arbitrary position in the groove 3a on the button body 2 side smoothly moves to the lower portion in the annular groove 3a. Thus, even if the stove main body 5 falls in an arbitrary direction, the small ball 4 can surely move downward along the groove 3a because of the annular groove 3a.

Further, when the button body 2 projects sideways to a predetermined projecting position by the elastic force of the switch piece 12, the button body 2
The opening of the groove 3a on the side and the opening of the groove 3b on the side of the switch body 1a are aligned and communicated, and the small ball 4 moves into the groove 3b on the side of the switch body 1a along the continuous two grooves 3a and 3b.

Since the depth of the groove 3b on the side of the switch body 1a is formed such that a part of the small ball 4 protrudes as described above, a part of the small ball 4 is The small ball 4 protrudes from the groove 3b on the 1a side and faces the groove 3a on the button body 2 side, and is stored over both the grooves 3a and 3b.

Therefore, in this state, even when furniture or the like which has fallen comes into contact with the button body 2 or presses the button body 2 due to mischief of a child or the like, the small ball 4 is connected to the button body 2 and the switch body. The small ball 4 locks the button body 2 and prevents the button body 2 from being pushed in because it exists over 1a.

That is, a part of the small ball 4 protrudes from the groove 3b on the switch body 1a side, but the center of the small ball 4 is stored to a certain depth so as to be located in the groove 3b on the switch body 1a side. . Therefore, even if the button body 2 is pressed into the switch body 1a with a strong force, for example, the small ball 4 is pressed by the button body 2 in the direction of being housed in the groove 3b side. The button body 2 can be retained in the groove portion 3b on the 1a side and locked.

Therefore, when the stove body 5 is overturned, no current flows through the switch section 6, and safety can be reliably ensured in the event of a disaster.

When the stove body 5 is re-installed vertically, the small balls 4 in the grooves 3b on the switch body 1a are lowered by their own weight along the slopes in the two grooves 3a, 3b, that is, the button body. Since the small ball 4 is completely stored in the groove 3a on the button body 2 side, it moves into the groove 3a on the button body 2 side.
Is also released from the switch body 1a. Therefore, the button body 2 is connected to the switch body 1a as shown in FIG.
It can move inside and allow a current to flow through the switch section 6.

The safety switch 1 having such locking means consisting of the grooves 3a, 3b and the small balls 4 can reliably turn off the power when it falls down, and automatically turns on when it is returned to the correct installation position. be able to.

Further, since the grooves 3a and 3b are formed in the button body and the switch body of the conventional safety switch, and the locking means can be formed only by storing the small balls 4, the manufacturing cost is low and the manufacturing cost is low. The safety switch can be formed small.

It is a matter of course that one end of the button body 2 may be in a slightly inclined state with the downward direction and the lateral direction.

In the above embodiment, an annular groove is formed over the entire outer circumference of the button body 2 and the inner circumference of the switch body 1a.
Although the grooves 3a and 3b are formed, the shape of the grooves 3a and 3b is not limited to such an annular shape. For example, a plurality of grooves 3a and 3b are formed in the circumferential direction as shown in FIG. The small ball 4 may be stored in the container.

In the above embodiment, the groove 3a on the button body 2 is formed at a lower position than the groove 3b on the switch body 1a in a state where the two grooves 3a and 3b communicate with each other.
Conversely, as shown in (b), the grooves 3b on the switch body 1a side may be grooves 3a, 3b formed at a lower position.

In this case, as shown in FIG.
Grooves 3a and 3b are formed at a plurality of circumferential positions opposite to each other on the outer periphery of the button body 2 and the inner peripheral surface of the switch body 1a so that the small balls 4 cannot move in the circumferential direction. In the installed state, the small ball 4 is completely stored in the groove 3b on the switch body 1a side, and when the stove falls, the small ball 4 in the groove 3b formed in an inclined direction faces the button body 2 facing the button.
It may be formed so that the button body 2 is prevented from moving by a part of the small ball 4 which moves into the side groove 3a and protrudes from the groove 3a.

In the above embodiment, grooves 3a and 3b are formed in the button body 2 and the switch body 1a as locking means, and the small balls 4 are accommodated in the grooves 3a and 3b. The present invention is not limited to the grooves 3a and 3b and the small balls 4, but includes, for example, a slide plate 16 in which an elongated hole 21 is engaged with one end of a button body 2 as shown in FIG. You may.

The slide plate 16 has a long hole 21 formed at one end thereof, and the button 2 is inserted into the long hole 21, and the other end is attached to a peripheral portion of the long hole 21. Spring 17
And is held by the stove body 5 via the. Further, a push button 18 is provided at the tip of the spring 17 and the push button 18 is provided.
18 protrudes outside the side wall of the stove body 5 through the hole 19. By pressing the push button 18 from the outside of the stove body 5, the slide plate 16 can move in the direction of the long diameter of the long hole 21.

As shown in FIG. 6, an engagement groove 20 is formed on the peripheral surface of the button body 2, and the slide plate 16 is constantly pulled toward the stove body 5 by a spring 17. The push button 18 and the spring 17 are connected to the slide plate 16
It is formed as a releasing means for releasing the locking of.

In the case of the safety switch 1 having such locking means, when the stove body 5 is normally installed, the button body 2 is pressed against the floor 8 as shown in FIG. A switch pressing portion housed inside the switch body 1a and provided at the tip of the button body 2 as in the above embodiment.
A current flows through the switch section 6 by 2a.

For example, when the stove body 5 falls, as shown in FIG. 7, the pressing of the button body 2 is released and the button body 2 is moved
At this time, since the slide plate 16 is always pulled toward the side wall of the stove body 5 by the spring 17, the engagement groove 20 of the button body 2 is exposed outside the switch body 1a. When the slide plate 16 hits the position of the slide plate 16, the peripheral portion of the slot 21 of the slide plate 16
20 is engaged.

As described above, the slide plate 16 is
When the long hole 21 is fitted, the button body 2 cannot move into the switch body 1a again by the locking of the slide plate 16, and the power of the stove may be turned on carelessly after the fall. Absent.

For example, when it is desired to turn on the power of the stove again after the fall, the push button 18 provided on the outside of the side wall of the stove body 5 is pressed inward, and the slide plate 16 is pressed.
By sliding, the long hole portion 21 also moves, the engagement of the slide plate 16 with the engagement groove portion 20 is released, and the button body 2 is pressed into the switch body 1a as usual, and the power of the stove is turned on.

When the button body 2 is locked by such a slide plate 16, the slide plate 16 is turned over once and then
Since the power is not turned on unless the lock is released by sliding the 16, it is possible to particularly prevent children's mischief.

As another embodiment, FIG.
As shown in (a), the lower end portion of the button body 2 is formed of a split member 22a, 22b, and a projection piece 24 rotatably locked by a pin 25 between the split members 22a, 22b. May be provided.
A leaf spring 23 having a rear end portion locked by a spring stopper 26 is attached to such a protruding piece 24, and a force that always projects outward is applied.

When the stove main body 5 is in a normal installation state, the button body 2 is pressed and stored in the switch main body 1a as in the above-described embodiments. When the stove body 5 falls, the button body 2 projects from the switch body 1a, and at the same time, the protruding piece 24 is released from the pressed state by the inner wall of the switch body 1a. Pin 25 facing
And protrudes outside from between the split members 22a and 22b. Therefore, even if the button body 2 is pressed into the switch body 1a in this state, the button body 2 does not move because it is locked by the projection piece 24.

When it is desired to store the button body 2 in the switch body 1a again, the projection piece 24 is divided into two split members 22a and 22a.
The button body 2 can be housed in the switch body 1a by being pushed between the switch bodies b. The projection piece 24 may be provided with a releasing means such as a button or a lever for releasing the engagement of the projection piece 24 by projecting and pressing the tip of the projection piece 24 to the outside of the stove main body 5; Projection piece 24 from outside
Can be pushed between the split members 22a and 22b.

The shape of the projecting piece 24 may be any shape that can be used as a projecting portion, such as a plate-shaped or bar-shaped projecting portion. Alternatively, a normal spring-shaped spring or the like may be used. In the case of a safety switch having such a locking means as well, after the tip has fallen over once, the projecting piece 24 is provided by some means.
Since the button body 2 cannot be moved unless the switch is pushed into the switch body 1a, it is impossible to inadvertently connect the switch 6 after falling down, and it is necessary to prevent the electric appliance from being inadvertently energized. Can be.

Further, it is possible to provide a part of the locking means on the side of the stove body 5 as shown in FIG. That is, a circular through-hole 27 is formed in the stove body 5,
A pressing body 28 separate from the button body 2 is slidably inserted through the button body 2. In addition, the base of the pressing body 28 has a flange
The pressing body 28 can be positioned at a predetermined projecting position.

On the outer peripheral surface of the pressing body 28 and the inner peripheral surface of the through hole 27 of the stove main body 5, grooves 3a and 3b are formed all around or at plural intervals, respectively, as described above. , 3
Small ball 4 is stored in b.

Further, a conventional switch having no groove 3a or the like is used for the switch 1, and one end of the button 2 is brought into contact with the end face on the base side of the pressing body 28. The switch 1 is mounted on the stove body 5.

Therefore, during use of the stove, the pressing body 28
Are oriented vertically, and the small ball 4 is a pressing body as shown by a solid line in the figure.
Since the pressing body 28 is completely housed in the groove 3a, the pressing body 28 moves upward and pushes the button body 2.

When the stove falls down, the button body 2 causes the pressing body 28 to protrude to a predetermined protruding position by its restoring force. Since the two grooves 3a and 3b coincide with each other, the small ball 4 is moved to the stove main body 5 as shown by an imaginary line. The small ball 4 moves to the groove 3b of the pressing body 28, and a part thereof faces the groove 3a of the pressing body 28.
Is locked at a predetermined projecting position. When the stove is installed again, the small ball 4 moves to the groove 3a again, and the movement of the pressing body 28 becomes free as described above.

In the above embodiment, the groove 3a is provided in the pressing body 28 which is separate from the button body 2. However, a configuration in which the groove 3a is provided directly in the button body 2 as shown in FIG.

In the present invention, the button body 2 does not necessarily need to be brought into contact with the floor surface 8; for example, the button body 2 in the lateral direction is brought into contact with the wall surface, and the stove moves to move from the corresponding contact position. When the button body 2 is displaced, the button body 2 can be made to protrude to a predetermined position, a safety switch can be provided in an arbitrary direction with respect to the electric appliance, and the electric appliance does not always fall down. The function can be exhibited without doing so.

Further, in the above embodiment, the stove is used as an electric appliance to which the safety switch 1 is attached. However, the safety switch of the present invention is not limited to other electric appliances such as a hot air heater, an incandescent lamp stand, an electric heater, etc. It can be arbitrarily attached to those which sometimes have a danger such as heat generation.

[0059]

According to the present invention, the button body is automatically locked by the locking means even when the safety switch is activated and the button body of the safety switch is protruded due to the fall of the electric appliance or the like. The button does not move into the switch body, and the electric appliance does not turn on when it falls down. Therefore,
Even if another object comes into contact with the fallen electrical appliance during a disaster, etc., or if a child accidentally touches the safety switch of the overturned electrical appliance, no current will flow through the electrical appliance, causing a fire. The danger of becoming can be prevented.

When the locking means is constituted by the button body, the groove formed in the switch body, and the locking body accommodated in the groove as described above, the structure of the locking means is simple. Therefore, there is an effect that the manufacturing cost can be kept low and it is economical, and the form of the safety switch can be easily made small.

In the case where the locking means comprises a projection provided on the peripheral surface of the button body so as to be able to move back and forth, and an urging means for urging the projection in a direction in which the projection is projected, or A locking portion having a groove provided on the peripheral surface, a locking hole through which the button body is inserted, and a peripheral portion of the locking hole of the locking body is detachably engageable with the groove at a predetermined projecting position of the button body. In the case where the button body is provided with an urging means for urging the locking body so that the button body is fitted, it is not possible to further securely lock the button body.

[Brief description of the drawings]

FIG. 1 is a front view showing a stove with a safety switch according to the present invention.

FIG. 2 is a sectional view showing a safety switch of the present invention.

FIG. 3A is a cross-sectional view showing a state when the safety switch is overturned, and FIG. 3B is a cross-sectional view taken along line AA of FIG.

4A is a cross-sectional view illustrating a groove of a safety switch according to another embodiment, FIG. 4B is a cross-sectional view illustrating a safety switch according to another embodiment, and FIG. B sectional drawing.

FIG. 5 is a bottom sectional view showing a safety switch according to another embodiment.

FIG. 6 is a sectional view of a safety switch.

FIG. 7 is a sectional view showing a state when the safety switch has fallen.

8A is a bottom sectional view of a button body of a safety switch according to another embodiment, and FIG. 8B is a sectional view of a button body of a safety switch.

FIG. 9 is a cross-sectional view illustrating another embodiment.

FIG. 10 is a cross-sectional view illustrating another embodiment.

FIG. 11 is a sectional view showing a conventional safety switch.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Switch body, 2 ... Button body, 3a, 3b ... Groove part, 4 ...
Small ball (locking body), 5 ... Stove body (electric appliance body),
6 switch part, 16 locking member, 17 urging means, 23 urging means.

Claims (10)

(57) [Claims] 1. A switch body (1a) provided with a switch part (6) for switching between energization and disconnection, and a button body (2) provided on a switch body (1a) so that one end thereof can be extended and retracted.
When the button body (2) is pressed inside the switch main body (1a), the switch part (6) is connected, and when the button body (2) protrudes, the switch part (6) is formed. The button body (2) is releasably locked to the switch body (1a) side at a predetermined projecting position of the button body (2) so that the button body (2) is released from the switch body. (1a) Locking means for preventing movement inside is provided, and the locking means moves by its own weight to release the fixing of the button body (2) to the switch body (1a). A safety switch comprising (4). 2. A switch body (1a) provided with a switch portion (6) for switching between energization and disconnection, and a button body (2) provided on the switch body (1a) at one end so as to be retractable.
When the button body (2) is pressed inside the switch main body (1a), the switch part (6) is connected, and when the button body (2) protrudes, the switch part (6) is formed. The button body (2) is releasably locked to the switch body (1a) side at a predetermined projecting position of the button body (2) so that the button body (2) is released from the switch body. (1a) Locking means for preventing movement into the inside is provided, and the locking means switches the button body (2) by being present between the button body (2) and the switch body (1a). A small ball (4) is provided as a locking body (4) to be locked to the main body (1a) side, and when the small ball (4) moves, the switch body (1a) of the button body (2) is moved. A safety switch characterized in that the fixing to () is released. 3. The locking means comprises grooves (3a) and (3b) formed on an outer peripheral surface of the button body (2) and an inner peripheral surface of the switch body (1a), respectively, and the grooves (3a) and (3b). ), And the locking member (4) is completely stored in one of the grooves (3a) and (3b) so as to allow the button body (2) to move. And the other is provided at a depth where a part of the locking body (4) protrudes, and the two grooves (3a), (3
b) are provided so as to face each other at a predetermined projecting position of the button body (2), and when the button body (2) is at one end or substantially downward, the locking body (4) has one groove ( When the button body (2) is housed in the button body (2) and one end of the button body (2) is substantially horizontal, the locking body (4) in the groove (3a) moves to the other groove (3b) and the button body (2) 3. The safety switch according to claim 1, wherein the opposing grooves (3a) and (3b) are formed to be inclined so as to prevent the movement of the switch. 4. A switch body (1a) provided with a switch portion (6) for switching between energization and disconnection, and a button body (2) provided on the switch body body (1a) with one end thereof retractable.
When the button body (2) is pressed inside the switch main body (1a), the switch part (6) is connected, and when the button body (2) protrudes, the switch part (6) is formed. The button body (2) is releasably locked to the switch body (1a) side at a predetermined projecting position of the button body (2) so that the button body (2) is released from the switch body. (1a) Locking means for preventing movement into the inside is provided, and the locking means is inserted into the groove (20) provided on the peripheral surface of the button body (2) and the button body (2). Lock hole (21)
And a peripheral portion of a locking hole (21) of the locking body (16) is detachably fitted to the groove (20) at a predetermined projecting position of the button body (2). A safety switch comprising a biasing means (17) for biasing the locking body (16). 5. A switch body (1a) provided with a switch portion (6) for switching between energization and disconnection, and a button body (2) provided on the switch body (1a) so that one end of the switch body is retractable.
When the button body (2) is pressed inside the switch main body (1a), the switch part (6) is connected, and when the button body (2) protrudes, the switch part (6) is formed. The button body (2) is releasably locked to the switch body (1a) side at a predetermined projecting position of the button body (2) so that the button body (2) is released from the switch body. (1a) Locking means for preventing movement into the inside is provided, and the locking means includes a protrusion (24) provided on the peripheral surface of the button body (2) so as to be able to move back and forth, and the protrusion (24). ) In the direction of projecting the projections (23).
At a predetermined projecting position of the button body (2), the projection (24) projects from the inner peripheral surface of the button body (2), and the button body (2) is locked to the switch body (1a) by the projection (24). A safety switch characterized in that: 6. A switch body (1a) provided with a switch section (6) capable of switching between energization and disconnection thereof, and a switch body (1a) having one end movable out and back.
A safety switch (1) consisting of a button body (2) attached to the main body is attached, and when the electric appliance body (5) is used, the button body (2) is pressed inward of the switch body (1a). An electrical appliance with a safety switch, wherein the switch (6) is disconnected by connecting the switch (6) and projecting the button (2) when the electrical appliance body (5) falls. In the predetermined projecting position of (2), the locking means for releasably locking the button body (2) to the switch body (1a) to prevent the switch body (1a) from moving inside the switch body (1a). The locking means is provided with a locking body (4) that moves by its own weight to release the fixing of the button body (2) to the switch body (1a). Characterized safety switch Electrical appliances attached. 7. A switch body (1a) provided with a switch part (6) capable of switching between energization and disconnection thereof, and a switch body (1a) having one end part retractable.
A safety switch (1) consisting of a button body (2) attached to the main body is attached, and when the electric appliance body (5) is used, the button body (2) is pressed inward of the switch body (1a). An electrical appliance with a safety switch, wherein the switch (6) is disconnected by connecting the switch (6) and projecting the button (2) when the electrical appliance body (5) falls. In the predetermined projecting position of (2), the locking means for releasably locking the button body (2) to the switch body (1a) to prevent the switch body (1a) from moving inside the switch body (1a). This locking means locks the button body (2) to the switch body (1a) side by being present between the button body (2) and the switch body (1a). Small ball as a locking body (4) ), Wherein the movement of the small ball (4) releases the fixing of the button body (2) to the switch body (1a). Appliances. 8. The locking means comprises grooves (3a) and (3b) formed on an outer peripheral surface of the button body (2) and an inner peripheral surface of the switch body (1a), respectively, and the grooves (3a) and (3b). ), And the locking member (4) is completely stored in one of the grooves (3a) and (3b) so as to allow the button body (2) to move. And the other is provided at a depth where a part of the locking body (4) protrudes, and the two grooves (3a), (3
b) are provided so as to face each other at a predetermined projecting position of the button body (2), and when the button body (2) is at one end or substantially downward, the locking body (4) has one groove ( When the button body (2) is housed in the button body (2) and one end of the button body (2) is substantially horizontal, the locking body (4) in the groove (3a) moves to the other groove (3b) and the button body (2) The electric device with a safety switch according to claim 6 or 7, wherein the opposing grooves (3a) and (3b) are formed to have an inclined shape so as to prevent the movement of the groove. 9. A switch body (1a) provided with a switch part (6) capable of switching between energization and disconnection thereof on an electric appliance body (5), and a switch body (1a) having one end part movable out and back.
A safety switch (1) consisting of a button body (2) attached to the main body is attached, and when the electric appliance body (5) is used, the button body (2) is pressed inward of the switch body (1a). An electrical appliance with a safety switch, wherein the switch (6) is disconnected by connecting the switch (6) and projecting the button (2) when the electrical appliance body (5) falls. In the predetermined projecting position of (2), the locking means for releasably locking the button body (2) to the switch body (1a) to prevent the switch body (1a) from moving inside the switch body (1a). The locking means comprises a groove (20) provided on the peripheral surface of the button body (2), and a locking hole (21) through which the button body (2) is inserted.
And a peripheral portion of a locking hole (21) of the locking body (16) is detachably fitted to the groove (20) at a predetermined projecting position of the button body (2). And an urging means (17) for urging the locking body (16). 10. A switch body (1a) provided with a switch unit (6) capable of switching between energization and disconnection thereof on an electric appliance body (5), and a switch body (1) having one end thereof retractable.
a) a safety switch (1) comprising a button body (2) attached to a), and the electric appliance body (5);
When using the button body (2) is the switch body (1a)
The switch unit (6) is connected by being pressed inward, and the button body (2) is connected when the electric appliance body (5) falls.
The button unit (2) is releasably released to the switch body (1a) at a predetermined projecting position of the button unit (2) in the electric device with a safety switch in which the switch unit (6) is cut off by projecting the button unit. Locking means for locking the switch body (1a) to prevent the switch body (1a) from moving inside the switch body (1a) is provided, and the locking means extends and retracts on the peripheral surface of the button body (2). The projection (24) is provided freely, and includes an urging means (23) for urging the projection (24) in a direction in which the projection (24) is projected.
At a predetermined projecting position of the button body (2), the projection (24) projects from the inner peripheral surface of the button body (2), and the button body (2) is locked to the switch body (1a) by the projection (24). An electric appliance with a safety switch.