CN2259697Y

CN2259697Y - Power switch apparatus with automatic disconnectable plug

Info

Publication number: CN2259697Y
Application number: CN96215578U
Authority: CN
Inventors: 步恒秋
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-07-17
Filing date: 1996-07-17
Publication date: 1997-08-13
Anticipated expiration: 2006-07-17

Abstract

The utility model relates to a power switch apparatus with an automatic disconnectable plug, comprising a casing, a timer, electromagnetic coils, and a safety and a plug of the electric appliance. The utility model is characterized in that the running end of the electromagnetic coil is extended and fixed with a movable plate parallel to the spacing plate, the spacing plate is provided with electric contacts, and the corresponding positions of the electric contacts are provided with plug holes. The plug of the utility model can fall off automatically when the timer arrives the time, as well as when the fuse of the safety is burnt out by the overhigh load current. The utility model can be used for switches of various electric appliances.

Description

The power switch device that plug can come off automatically

The utility model relates to a kind of power switch device.

Along with improving constantly of living standards of the people, electric equipment products enter family in succession, but thing followed Electrical Safety problem is more and more worried by people.Such as electric heater, after adding hot water, some need pull out plug, have a bath relievedly, otherwise reason such as, electric leakage bad owing to ground connection can cause danger again.Such as electric cooker, the back outage automatically of regularly cooking if can in time attaching plug be pulled out, will be insured more again.Meet power failure etc. for another example on occasion, Electric stove of plugging or electric iron plug are forgotten to pull up and, and will cause fire.Electricity consumption is worried most in addition is sensible child not too, if plug and power supply are separated, will reduce many danger and trouble.

At the problems referred to above, the purpose of this utility model provides a kind of simple in structure, and operation is reliably convenient, the power switch device that the electrical appliance plug can come off automatically.

For achieving the above object, the utility model is taked following design: the power switch device that a kind of plug can come off automatically, it comprises shell, timer, solenoid, insurance, the electrical appliance plug, described timer is installed on the described shell, the stiff end of described solenoid is installed on the described shell, at limiting plate of moved end arranged outside near described solenoid, described limiting plate is fixed on the described shell, by spring on the described solenoid and described limiting plate, limit the moved end of described solenoid, it is characterized in that: extend in the moved end of described solenoid and fix a moving plate parallel with described limiting plate, on described limiting plate, electric contact is set, on the position corresponding, plug hole is set with described electric contact.

Be arranged on the bottom that described electric contact on the described limiting plate can be positioned at described limiting plate, the plug hole corresponding with described electric contact, be arranged on the described shell bottom surface between described limiting plate and the described moving plate, the size of described plug hole is greater than the size of pin on the described electrical appliance plug, so that described electrical appliance plug can lean on gravity to come off from plug hole.

The corresponding back-moving spring in described plug hole position with described shell bottom surface is set above the electric contact of described limiting plate that can be in said structure.

Be arranged on the middle part that electric contact on the described limiting plate can also be positioned at described limiting plate, described electric contact be shaped as an annular projection, the depth dimensions of described annular is less than the folding distance of described solenoid, and the plug hole corresponding with described electric contact is arranged on the described moving plate.

The utility model is owing to take above design, it has the following advantages: 1, the utility model since in the limiting plate arranged outside of solenoid moved end an and moving plate that with solenoid moved end be synchronized with the movement parallel with limiting plate, utilize the unlatching of solenoid and the position between the adhesive to move to control and insert and extract the electrical appliance plug, therefore as long as occur any fault in the circuit, solenoid one is opened, plug will automatically come off out, has guaranteed Electrical Safety effectively.2, the utility model is owing to adopt plug hole with electrical appliance to be arranged on shell bottom surface between limiting plate and the moving plate, and plug hole is greater than the frame mode of the size of pin on the electrical appliance plug, therefore when moving plate is clamped on the electrical appliance plug on the electric contact of limiting plate under the drive of the moved end of solenoid, just can power to electrical appliance.Timer is to constantly, and circuit disconnects, and the moved end of solenoid is pushed moving plate open, and the electrical appliance plug just can lean on self gravitation to split away off from plug hole automatically, and reliability is high.3, the utility model is owing to adopt the plug hole with electrical appliance to be arranged on the moving plate, and the electric contact on the limiting plate is arranged to the frame mode of annular projection, therefore plug can be laterally, vertically insert arbitrarily, the number of pin and the setting of shape are also more flexible.The utility model is except timer can come off then automatically, and excessive when load current, when blowing the fuse of safeties, the electrical appliance plug also can come off automatically.The utility model can be widely used in the mains switch of various electrical appliances.

Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.

Fig. 1 is the utility model structural representation

Fig. 2 is that schematic diagram is looked on the left side of Fig. 1

Fig. 3 is the schematic rear view of Fig. 1

Fig. 4 is a circuit theory schematic diagram of the present utility model

Fig. 5 is another embodiment of the present utility model

Fig. 6 is a plug connection diagram in the foregoing description

As Fig. 1, Fig. 2, shown in Figure 3, on the front plate 2 of a Power switch housing 1, fix a timer 3, the knob 4 of timer 3 protrudes shell 1.Between the top panel 5 of shell 1 and bottom panel 6 solenoid 8 is set, solenoid 8 can be the off-the-shelf of buying, and also can buy semi-finished product, remainder oneself making.Upper and lower with the stiff end 9 of solenoid 8 is separately fixed on the end face 5 and bottom surface 6 of shell.Limiting plate 10 of vertical fixing again on end face 5 by original spring on the solenoid 8, is limited in line bag, armature and the moved end 11 of solenoid 8 in the limiting plate 10.Be fixed on moved end 11 with two, and the bolt 12 that protrudes moved end 11 end faces connects a moving plate 13 parallel with limiting plate 10.The moved end 11 of solenoid 8 and the extended distance between the moving plate 13 are by insulated column 14 decisions that are enclosed within on the bolt 12, the length of insulated column 14, can tighten the electrical appliance plug during with solenoid 8 adhesives, plug is moved freely between moving plate 13 and limiting plate 10 be as the criterion.Moved end 11 can drive moving plate 13 and be synchronized with the movement.The alternate manner setting also can be adopted in extension between moved end 11 and the moving plate 13.Two electric contacts 15 are set in the bottom of limiting plate 10, and two electric contacts 15 on the limiting plate 10 are connected with circuit.Corresponding with the position of electric contact 15, the plug hole 16 of two circles is set on the bottom panel 6 of shell 1, the diameter of plug hole 16 is greater than the diameter of the pin on the electrical appliance plug 17 18, so that plug 17 can separate with stiff end in the moved end 11 of solenoid 8 time, can lean on deadweight to come off from plug hole 16.

As shown in Figure 4, circuit of the present utility model is a custom circuit, and it can be a various forms, such as insuring 19 back, two branch roads in parallel, article one, a timer 3 of series connection and a solenoid 8 on the branch road on another branch road are connected the normal battle and the electrical appliance 20 of solenoid 8.Also can be earlier with after insurance 19 and timer 3 series connection, two branch roads in parallel again.Because circuit is not the emphasis of the utility model protection, therefore just narrate no longer one by one for the setting of circuit.

In the foregoing description,, all electric elements can be fixed on the insulation board, again insulation board be fixed on the metal shell if use metal shell.

In the foregoing description, plug hole 16 can be three that are arranged side by side, three electric contacts 15 that on limiting plate 10, will be provided with like this, one of them electric contact 15 earth connection, three plug holes 16 that are arranged side by side also will be set in the bottom surface 6 of shell 1, at this moment three of need be designed to be arranged side by side of the pin 18 on the plug 17 become a kind of plug of special use.

In the foregoing description, if pin 18 is triangularly arranged on the plug 17, also be triangularly arranged between three plug holes 16 of shell 1 bottom surface 6 so, and need to be oppositely arranged convexo-concave block on limiting plate 10 at this moment and the moving plate 13, so that moving plate 13 when moving right in the moved end 11 with solenoid 8, blocks the pin 18 on the plug 17.The shape of pin 18 on the plug 17 and plug hole 16 can change to some extent in addition.Can also on shell 1, be arranged in parallel simultaneously many group plug holes 16, many group electric contacts are set, on limiting plate 10 to satisfy the demand of a plurality of power consumption equipments.

In the various embodiments described above, can also spring 21 (as shown in Figure 2) be set in electric contact 15 upper ends of limiting plate 10, so that during solenoid 8 outage, the restoring force by spring ejects the plug 17 of electrical appliance.At this moment the elastic force of spring 21 only helps out, the main deadweight that still relies on that comes off of plug.

As Fig. 5, shown in Figure 6, present embodiment and the various embodiments described above difference are the middle parts that the plug hole 16 of electrical appliance is arranged on moving plate 13, electric contact 15 on limiting plate 10 is annular projections, the depth dimensions of annular is less than the folding distance of solenoid 8, when electrical appliance plug 17 is in attracting state at solenoid 8, can pass plug hole 16 and insert in the electric contact 15, make power consumption equipment be in "on" position.When solenoid 8 was opened, moved end 11 drove moving plate 13, and plug 17 is extracted from electric contact 15 automatically.Because the folding of solenoid 8 distance is limited, the degree of depth of above-mentioned electric contact 15 is too shallow, and the slave part that does not comprise electric contact can be set.The advantage of present embodiment is also can such as the vertical solenoid 8 of installing it be come off downwards in other direction use the front level insertion of plug 17 from shell 1.The number of pin 18 and distribution form variation are also convenient on the plug 17 simultaneously.

In the foregoing description, some other structures can also be arranged, as relying on spring with the plug ejection etc.

In the various embodiments described above, an insurance 19 can be set in circuit, its form can be a various off-the-shelf of the prior art.In addition timer 3, solenoid 8 and insure 19 install and fix position etc., all can change as required.

In the time of operation, with embodiment 1 is example (as shown in Figure 2), earlier with timer regularly (after also can plugging in, with hand steered firmly plug more regularly), the solenoid adhesive is inserted plug hole with plug then from the shell bottom surface, the pin on the plug is clamped on the electric contact of limiting plate, circuit is connected, and powers to electrical appliance.When timer then or circuit break down insurance when disconnecting, the moved end of solenoid drives moving plate and is moved to the left because the pin diameter of plug is less than plug hole, plug just splits away off from plug hole under the effect of self gravitation, stops to power to electrical appliance.

Claims

1, the power switch device that a kind of plug can come off automatically, it comprises shell, timer, solenoid, insurance, the electrical appliance plug, described timer is installed on the described shell, the stiff end of described solenoid is installed on the described shell, at limiting plate of moved end arranged outside near described solenoid, described limiting plate is fixed on the described shell, by spring on the described solenoid and described limiting plate, limit the moved end of described solenoid, it is characterized in that: extend in the moved end of described solenoid and fix a moving plate parallel with described limiting plate, on described limiting plate, electric contact is set, on the position corresponding, plug hole is set with described electric contact.

2, the plug as claimed in claim 1 power switch device that can come off automatically, it is characterized in that: be arranged on the bottom that described electric contact on the described limiting plate is positioned at described limiting plate, the plug hole corresponding with described electric contact, be arranged on the described shell bottom surface between described limiting plate and the described moving plate, the size of described plug hole is greater than the size of pin on the described electrical appliance plug, so that described electrical appliance plug can lean on gravity to come off from plug hole.

3, the plug as claimed in claim 2 power switch device that can come off automatically is characterized in that: the corresponding back-moving spring in described plug hole position with described shell bottom surface is set above the electric contact of described limiting plate.

4, the plug as claimed in claim 1 power switch device that can come off automatically, it is characterized in that: be arranged on the middle part that electric contact on the described limiting plate is positioned at described limiting plate, described electric contact be shaped as an annular projection, the depth dimensions of described annular is less than the folding distance of described solenoid, and the plug hole corresponding with described electric contact is arranged on the described moving plate.