JPH0621190Y2 - Power cap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a power cap for connecting electrical equipment to a power outlet, and more particularly to a power cap that can be detached from the power outlet by a simple operation.

(Prior Art) Conventionally, when pulling out a power cap of an electric device from a power outlet, a person holds a power cap and pulls it out from the power outlet. In addition, when pulling out the power cap from the power outlet with the extension cord, it was necessary to fix the power outlet with one hand and pull out the power cap with the other hand.

(Problems to be solved by the invention) However, according to the above operation, when pulling out from the power outlet, pulling the power cap to a specific method, a certain amount of force and knack are required, especially from the power outlet with extension cord There is a disadvantage that the power cap cannot be pulled out with only one hand.

Further, when inserting the power cap into the power outlet, if the user holds the tip of the power cap, there is a risk of accidentally touching the connecting leg of the power cap with a finger and receiving an electric shock.

The present invention has been made in view of the above circumstances, and the power cap that can be disconnected from the power outlet by disconnecting the electrical connection between the power cap and the power outlet with a simple operation and can be safely inserted and connected to the power outlet. The purpose is to provide.

(Means for Solving Problems) In order to solve the problems of the conventional example, the power supply cap according to the present invention is configured as follows.

At one end of the cap body through which the power cord is inserted, a connecting leg connected to this power cord is held so as to project from one surface, and the operating body is pierced by an operating spring so that the operating body is connected to the connecting leg. It is provided so as to project freely while urging it in a direction that matches the projecting direction.

A cover provided with a guide hole for projecting the tip end of the connecting leg to the outside so as to be retractable outwardly is continuously provided to the tip end of the actuating body, and the cover is slidably fitted to the cap body. To configure.

The moving piece is movable in a direction orthogonal to the actuating body, the interlocking piece having a hole through which the actuating body penetrates is arranged, and the interlocking piece portion near the hole is provided by providing a spring for biasing the interlocking piece. A lock releasing means that fits into a lock groove provided in the actuating body to lock the actuating body in a retracted state and applies an operating force so that the interlocking piece can always be moved in a counter-biasing direction. Set up.

Further, the lock releasing means applies a current to a coil installed inside the cap main body to attract a movable iron piece having one end as a fulcrum and the other end fitted to the interlocking piece to the coil side. , The interlocking piece can be moved in the opposite biasing direction.

(Operation) Since the present invention is configured as described above, when the power cap is gripped and inserted into the power outlet to be connected, the cover of the power cap is pressed against the surface of the power outlet and resists the force of the operating spring. As a result, the operating body retracts into the cap, and the force from the spring causes the interlocking piece to fit into the lock groove of the operating body, and this state is maintained.

When the interlocking piece is moved in the anti-biasing direction against the force of the spring by the operation force applied by the lock releasing means, the interlocking piece is disengaged from the lock groove of the actuation body by the operation spring and is connected to the actuation body. The installed cover is elastically projected to press the power outlet, and the reaction force pulls out the connection leg of the plug cap from the power outlet.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional explanatory view showing a state before the power cap of this embodiment is inserted into a power outlet, and FIGS. 2 and 3 show a state where the power cap of this embodiment is inserted into a power outlet. FIG.

The cylindrical cap body 1 is made of an insulating material, and a rubber. Cord connection part 2 made of soft material such as vinyl
Are lined up. An electric vacuum cleaner is provided at the end of the cord connecting portion 2. Power cord 3 connected to electrical equipment A such as polisher
Has been inserted.

One end of each connection leg 5.5 made of a metal having good conductivity, which is connected to the power cord 3 for each pole, is held by a screw 6.6, and the other end of the connection leg 5 is the bottom surface 1a of the cap body 1.
It is configured such that it penetrates through the hole 1b provided in the above and projects to the outside of the cap body 1.

On the inner side of the cap 1, a support wall 6 that forms a space inside
To be fixed. A hole 7.8 is provided in each of the bottom surface 1a of the cap body 1 and the central portion of the support wall 6, and an actuating body 9 penetrating from the inside of the cap body 1 to the outside is attached. A seat 10 is formed substantially in the center of the actuating body 9, and an operating spring 11 is inserted between the seat 10 and the support wall 6 to urge the actuating body 9 toward the outside of the cap body 1 so that it can freely project. To configure.

The seat 10 contacts the tip of the operating spring 11 and prevents the actuating body 9 from coming out of the cap body 1. Further, the position of the seat 10 determines the protruding length of the actuation body 9 to the outside of the cap body 1. The operating spring 11 has a small diameter on the side in contact with the seat 10,
It is formed in a shape in which the diameter gradually increases toward the support wall 6, that is, in a spiral shape having a small diameter in the protruding direction side of the connection leg 5.

A cylindrical cover 12 having a bottom surface 12a at its end is connected to the distal end of the actuating body 9 so that its opening is on the cap body 1 side. The bottom surface 12a of the cover 12 is formed with a guide hole 13.13 through which the connecting leg 5.5 passes. The outer diameter of the cover 12 is formed to be the same as the outer diameter of the cap body 1, and the groove 1c formed around the connection leg 5 side of the cap body 1 and the inner wall surface 12b of the cover 12 are brought into sliding contact with each other, so that the cover 12 is covered by the cap. It is configured to be slidably fitted to the main body 1, and the connecting legs 5 project from the guide holes 13 so as to be retractable and outward. In a normal state, the cover 12 is biased downward by the operating spring 11, so that the connection leg 5 covers most of the cover 1.
It is covered with 2, and only the tip 5a projects from the cover 12. This is because when the power cap of this embodiment is inserted into a power outlet, it is easy to align the connection leg 5 with the insertion hole of the power outlet.

On the upper surface of the bottom surface 1a of the cap body 1, an interlocking piece 15 having a protrusion 14 at one end and having an L-shaped cross section is installed.
The actuating body 9 penetrates through a hole 16 provided at a substantially central portion of 5. A coil spring 17 is inserted between the protruding portion 14 and the side portion of the support wall 6, and the interlocking piece 15 is urged to the left side in the drawing so that the wall portion 16a of the hole 16 of the interlocking piece 15 is located on the operating body 9 side. It comes in contact with the part. The hole 16 provided in the interlocking piece 15 is
The direction parallel to the coil spring 17 is formed to be slightly larger than the diameter of the operating body 9 in the direction. A lock groove 18 is provided below the seat 10 of the actuation body 9 so that the wall portion 16a of the hole 16 of the interlocking piece 15 can be fitted therein. That is, the lock groove 18 provided in the actuating body 9 and the hole 1 provided in the interlocking piece 15
6 and the coil spring 17 form a lock mechanism that locks the operating body 9 in the retracted state.

As shown in FIG. 4, the other end of the interlocking piece 15 is formed with a concave portion 15a on each side, and a movable iron piece 19 having a convex portion 19a having a width equal to the depth of the concave portion 15a formed at both ends is fitted. It is supposed to meet. Convex portions 19b. Formed on both upper ends of the movable iron piece 19. The movable iron piece 19 is erected inside the support wall 6 by loosely fitting the square hole 20.20 provided in the upper part of the support wall 6 so as to correspond thereto. The square hole 20.20 in which the movable iron piece 19 is loosely fitted is formed slightly larger than the thickness of the movable iron piece 19 in the longitudinal direction of the interlocking piece 15, so that the interlocking piece 15 fitted in the movable iron piece 19 is slightly elongated in the longitudinal direction. It is configured to be movable.

An electromagnet 22 wound around a coil 21 is fixed to a position outside the movable iron piece 19 inside the support wall 6. That is,
A lock releasing means is formed to generate an attractive force in the electromagnet 22 by passing an electric current through the coil 21 and to apply an operating force in a direction to release the retracted state of the operating body 9.

FIG. 6 shows a wiring diagram of the embodiment. A switch 23 for supplying a current to the coil 21 is provided on the electric device A side, and one end of the switch 23 has one connecting leg 5 via the coil 21.
And the other end of the switch 23 is connected to the other connection leg 5. Further, since a rated current flows through the coil 21 for a short time, a fuse 24, a resistor, a safety circuit or the like is connected between the switch 23 and the coil 21 as a safety measure against an excessive input. The switch 25 is a switch for operating the load of the electric device A.

Next, the operation of this embodiment will be described.

Hold the cap body 1 and connect the connecting leg 5 to the power outlet 2
6, the surface of the cover 12 is pushed up by the surface of the power outlet 26 as shown in FIGS. 2 and 3, and the operating body 9 and the seat 10 move upward to compress the operating spring 11. , The lock groove 1 of the actuator 9
8, the wall portion 16a of the hole 16 provided in the interlocking piece 15 which is constantly urged to the left side in the drawing by the coil spring 17 is fitted to keep the retracted state (locked state). At this time, the operating body 9
The interlocking piece 15 is disposed so as to be orthogonal to the interlocking piece 15, so that the interlocking piece 15 is reliably fitted into the lock groove 18 of the actuating body 9.

Since the connection leg 5 is covered by the cover 12 when the connection leg 5 is inserted into the power outlet 26, the connection leg 5 is not exposed until the insertion is completed, thus preventing a risk of electric shock or the like.

Switch 2 provided on the electric device A side in the locked state
When 3 is closed, an alternating current from the power source flows through the coil 21 of the electromagnet 22, attracts the movable iron piece 19 in the right direction in the figure, and at the same time, the interlocking piece 15 moves, and as a result, the wall 16a of the hole 16a.
Comes out of the lock groove 18. Therefore, the operating body 9 and the cover 12 move downward in the drawing due to the restoration of the compression biased operating spring 11, project from the cap body 1 and press the surface of the power outlet 26, and the reaction force of the connecting leg 5 causes the connecting leg 5 to power. Unplug from outlet 26. The movable iron piece 19 is formed by repeatedly and intermittently energizing the coil 21 with an alternating current, a pulsating current, a plurality of pulses, a plurality of rectangular currents, or the like.
The locked state can be efficiently released by vibrating. In addition, the vibration of the movable iron piece 19 causes the support wall 6 to move.
Vibrates and promotes the restoring force of the operating spring 11, so that the connection leg 5 can be efficiently removed from the power outlet 26.

Further, in this embodiment, since the operating spring 11 has a spiral shape having a small diameter in the protruding direction of the connecting leg 5,
When the cap body 1 is inserted into the power outlet 26, at the beginning of compression, the portion of the spiral spring having a large diameter and having a weak restoring force is activated first, so that the feel at the time of insertion is good. Conversely, the locked state is released and the restoring force of the operating spring 11 causes the power outlet 26 to move from the cap body 1 to the cap body 1.
At the time of starting the operation, a strong restoring force is required at the time of extracting, but this can be dealt with by actuating first the portion of the spiral spring having a large restoring force and having a large restoring force.

In the present embodiment, the locked state of the actuating body 9 is released by passing a current through the coil 21, so that the power cap can be remotely operated by closing the switch 23 formed by a push button or the like provided near the electric device A. Can be securely removed from the power outlet.

In this embodiment, the coil 21 and the electromagnet 22 are connected to the actuating member 9
However, the present invention is not limited to this, and it may be located at any place where the interlocking piece can be moved inside the cap body.

7 and 8 show another embodiment of the present invention.
The parts that are configured to release the lock mechanism by manual operation and have the same structure as in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

A fixing piece 30 is installed between the inner side walls of the cap body 1 at a position above the bottom surface 1 a inside the cap body 1. The operating spring 11 is inserted between the fixing piece 30 and the cover 12, and the actuating body 9 is biased toward the outside of the cap body 1 so as to be projectable.

The interlocking piece 15 is installed on the upper surface of the fixed piece 30 so as to be orthogonal to the operating body 9. A hole 16 is provided in the center of the interlocking piece 15, and the actuating body 9 penetrates therethrough.

One end of the interlocking piece 15 is formed into three convex portions as shown in FIG. 8, the coil spring 17 is inserted and attached to the central convex portion 15a, and the end portion of the coil spring 17 presses the inner wall surface of the cap body 1. By doing so, the interlocking piece 15 is biased in the right direction in the drawing. Further, a lock groove 18 is formed in the substantially central portion of the actuating body 9, and the wall portion 16a of the hole 16 of the interlocking piece 15 is configured to be freely fit. That is, the lock groove 18 provided in the actuating body 9, the interlocking piece 15, and the coil spring 17
Thereby forming a lock mechanism that locks the operating body 9 in the retracted state.

A hole 31 is provided on the side surface of the cap body 1 and a push button 32 having a button portion having a diameter larger than the diameter of the hole 31 is attached to the outside. Push button 3
A groove 33 is formed on the inner side of the cap body of No. 2 and the groove 3
When the interlocking piece 15 is fitted and fixed to 3, the interlocking piece 15 can move vertically with respect to the actuating body 9 and constitutes a lock releasing means.

When the connection leg 5 of the cap body 1 is inserted into a power outlet 26 or a power outlet with an extension cord, the surface of the power outlet pushes up the cover 12, and the operating spring 11 compresses between the cover 12 and the fixing piece 30. The lock spring 18 of the actuating body 9 is moved to the seventh position by the coil spring 17.
The wall portion 16a of the hole 16 of the interlocking piece 15 which is constantly biased is fitted to the right side of the drawings and FIG. 8 to keep the actuating body 9 in the retracted state (locked state). At this time, the interlocking piece 15 is located on the right side by an amount that fits into the lock groove 18 from the normal state, and at the same time, the push button 32 is also kept in a position slightly pushed out from the side surface of the cap body 1 as shown in FIG. .

When the push button 32 is pressed while the operating body 9 is in the retracted state, the interlocking piece 15 moves to the left side in FIG. 8 against the force of the coil spring 17, and the lock groove 18 of the operating body 9 moves to the hole 16 of the interlocking piece 15. The wall 16a comes off.

At this time, if the push button 32 is continuously pressed, the interlocking piece 15 constantly moves in the counter-biasing direction against the force of the coil spring 17, so that the interlocking piece 15 does not press the actuating body 9 and the brake is applied. Prevent the occurrence of the phenomenon.

Further, a stopper 34 is fixed to the upper end of the actuating body 9 so that the actuating body 9 is prevented from coming out downward due to the biasing of the actuating spring 11.

(Effects of the Invention) The present invention provides a power supply cap with an operating body in which a cover formed so as to cover the connection leg is provided in series, and a lock mechanism for keeping the operating body in a retracted state and a lock releasing means for releasing the retracted state. Therefore, the connection leg of the power supply cap inserted into the power supply outlet can be removed from the power supply outlet by a very simple operation such as pushing a push button with one hand.

Therefore, it is convenient to handle an iron, a dryer, a toaster, a vacuum cleaner, and the like that are frequently inserted and removed from a power outlet, and particularly convenient to remove the power cap from the extension power outlet because it can be performed with one hand.

Further, when the power supply cap is inserted into the power outlet, since the connection leg is covered with the cover, it is possible to prevent electric shock caused by directly touching the connection leg by hand.

Furthermore, when inserting the power cap into the power outlet, if the connecting leg protruding from the cap body is not completely inserted, the actuating body will not lock and the power cap will come out. It also has the effect of preventing incomplete binding.

[Brief description of drawings]

FIG. 1 is a sectional explanatory view showing a power supply cap of an embodiment of the present invention, FIGS. 2 and 3 are sectional explanatory views showing a state in which the power supply cap of the present embodiment is inserted into a power outlet, and FIG. 4 is a book. FIG. 5 is a perspective explanatory view showing a fitting state of the interlocking piece and the movable iron piece in the embodiment, FIG. 5 is a perspective view showing the entire power supply cap of the present embodiment, and FIG. 6 is an explanatory view showing wiring of the present embodiment.
FIG. 7 is a sectional explanatory view showing another embodiment of the present invention, and FIG. 8 is a lateral sectional explanatory view in the retracted state of the embodiment of FIG. 1 ...... Cap body 5 ...... Connection leg 9 ...... Actuator 11 ...... Operating spring 12 ...... Cover 13 ...... Guide hole 15 ...... Interlocking piece 16 ...... Hole 17 ...... Coil spring 18 ...... Lock groove 19 ... … Movable iron piece 21 …… Coil 22 …… Electromagnet 26 …… Power outlet 32 …… Push button

Claims (2)

[Scope of utility model registration request] Claim: What is claimed is: 1. A cap body into which a power cord is inserted. One end of a cap body is connected to the power cord, and the connecting leg is projected from the one surface of the cap body. Is provided so as to project while urging in a direction coinciding with the projecting direction of the connection leg, and a cover provided with a guide hole for projecting the tip end portion of the connection leg so that the tip end portion of the connection leg can be retracted outward is connected to the tip end portion of the actuation body. When the cover is slidably fitted to the cap body, the cover is movable in a direction orthogonal to the operating body, and the interlocking piece has a hole through which the operating body passes. And a spring for urging the interlocking piece is provided, so that the interlocking piece portion near the hole fits in the lock groove provided in the actuating body to lock the actuating body in the retracted state. Together with the above A power supply cap, characterized in that a lock releasing means is provided for applying an operating force so that the piece can always be moved in the opposite biasing direction. 2. The lock releasing means attracts a movable iron piece having one end as a fulcrum and the other end fitted to the interlocking piece to the coil side by passing a current through a coil installed inside the cap body. The power source cap according to claim 1, wherein the interlocking piece is movable in the anti-urging direction by performing the above operation.