CN112531422A

CN112531422A - Delayed power connection type safety plug

Info

Publication number: CN112531422A
Application number: CN202011364974.XA
Authority: CN
Inventors: 沈超锋
Original assignee: Deqing Gaoqiao Silk Spinning Factory
Current assignee: Deqing Gaoqiao Silk Spinning Factory
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-03-19

Abstract

The invention discloses a delay power connection type safety plug which comprises a shell, wherein two contact pins are fixed on the side wall of the shell, a power connection groove corresponding to the two contact pins is formed in the shell, a connecting mechanism is arranged in the power connection groove, the connecting mechanism comprises a power connection plate, a power connection block and an action box, the power connection plate is fixed on the inner wall of the power connection groove, the side wall of the action box is connected with a push rod through a reset spring, the push rod penetrates through the side wall of the action box to extend inwards and is fixed with a push plate, and the push plate is connected with the inner wall of the action box in a sealing and sliding mode. Has the advantages that: by arranging the electrorheological fluid in the action box, after the plug is connected with the socket, the push rod is limited by the reset spring and cannot be connected with the electric plate and the electric block, so that the circuit is kept in an interruption state, and after the striking plate is stirred to strike the piezoelectric block, the electrorheological fluid can be subjected to electro-curing expansion, so that the push rod is pushed to move to connect the electric plate and the electric block, the circuit can be connected, and the electric buffering and the step-by-step connection are realized.

Description

Delayed power connection type safety plug

Technical Field

The invention relates to the technical field of plugs, in particular to a delay power connection type safety plug.

Background

When a power plug and a power socket in the power connection process of electric appliances such as electric heating appliances of various household appliances, kitchen appliances, bath appliances, air-conditioning appliances and the like are used for a long time, poor contact between the plug and the socket is caused by a plurality of factors such as softening of metal parts, reduction of elasticity, corrosion and oxidation of surfaces, oil stains, dust and the like, so that the phenomena of heating and ignition at the power contact part of the plug and the socket, deformation of the plug and the socket due to over-temperature and the like are caused.

The existing plug does not have effective self-protection capability, melting coincidence of an internal circuit is easily caused when overload and overheating occur, more serious short circuit is caused, power failure cannot be timely made when short circuit and overcurrent occur, serious fire is easily caused, the existing plug is directly powered after being inserted into a socket, when a user accidentally inserts a high-power electric appliance, correction cannot be timely made, only impact on the circuit can be caused, meanwhile, the service life of the electric appliance is seriously influenced, and therefore protection of the plug is paid attention to.

Disclosure of Invention

The invention aims to solve the problem of poor safety of a plug in the prior art, and provides a delay connection type safety plug.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a postpone and connect electric type safety plug, includes the shell, the lateral wall of shell is fixed with two contact pins, the inside of shell is equipped with connects the electric tank that corresponds with two contact pins, connect the inside coupling mechanism that is equipped with of electric tank, coupling mechanism connects the electroplax, connects the electricity piece and the action case including being fixed in the connecing of electric tank inner wall, the lateral wall of action case is connected with the push rod through reset spring, the push rod runs through the lateral wall of action case and inwards extends and be fixed with the push pedal, the sealed sliding connection of inner wall of push pedal and action case, the inner wall that connects the electric tank is fixed with the electro-magnet, the shell outside is equipped with actuating mechanism, connect the inside protection mechanism that is equipped with of.

In the above-mentioned delayed power-on safety plug, the protection mechanism includes a capacitor and a diode fixed on the inner wall of the power-on slot, the electromagnet corresponds to the push rod, the inner wall of the power-on slot is connected with a connecting plate through a power-on spring, and two contacts are fixed on the side wall of the power-on block.

In the delay electric-connection type safety plug, the action box is filled with electrorheological fluid and dichloromethane solution, and the connection positions of the two contacts and the electric-connection plate are insulated.

In the above-mentioned delay power-on safety plug, the actuating mechanism includes a piezoelectric block fixed on the outer wall of the housing, the outer wall of the housing is rotatably connected with a striking plate abutting against the piezoelectric block through a torsion spring, the piezoelectric block is a piezoelectric ceramic block, and the power-on block is in a shape of a concave.

Compared with the prior art, the invention has the advantages that:

1. according to the invention, the electrorheological fluid is arranged in the action box, after the plug is connected with the socket, the push rod is limited by the reset spring and cannot be connected with the electric connection plate and the electric connection block, so that a circuit is kept in an interrupted state, and after the striking plate is shifted to strike the piezoelectric block, the electrorheological fluid can be subjected to electro-curing expansion, so that the push rod is pushed to move to connect the electric connection plate with the electric connection block, the circuit can be connected, and the electric connection buffering and the step-by-step are realized;

2. according to the invention, by arranging the electromagnet, when the push rod moves to connect the power connection block with the power connection plate, the electromagnet generates magnetism to attract the push rod, so that the push rod is kept at the power connection position, thereby realizing power connection in a real sense, increasing the fault tolerance rate of plug use, and when a user finds that the power of an electric appliance is too high, direct overload impact on a circuit can be avoided due to stepwise power connection completion, so that the circuit and the electric appliance are effectively protected, and meanwhile, the risk of electric leakage and electric shock is reduced;

3. according to the invention, by filling the dichloromethane solution in the action box, when the internal temperature of the plug is obviously raised due to long-time high-power work of an electric appliance, dichloromethane can effectively absorb heat so as to relieve the internal overheating state of the plug, and the continuous overheating state can cause excessive gasification of dichloromethane, so that the push plate is pushed by the push plate to drive the push rod to move, the push rod is separated from the power connection plate and the power connection block, a circuit is interrupted until the temperature is recovered, further, the overheating protection and automatic recovery are effectively realized, the protection performance is strong, and no human intervention is needed;

4. in the invention, when the overcurrent condition occurs in the circuit, the electric appliance is possibly overloaded or short-circuited, the electromagnet can generate an amplified magnetic field to attract the connecting plate, so that the connecting plate is connected with the two contacts, and the push rod moves to the concave position of the electric connection block under the action of magnetic force, so that the circuit is interrupted in a short time, the capacitor is discharged to supply electrorheological fluid, the electrorheological fluid is kept in a solidified state, the push rod cannot reset, the circuit is interrupted until the discharge of the capacitor is finished, the overcurrent protection is realized, and the use is safer.

Drawings

Fig. 1 is a schematic structural diagram of a delayed power connection type safety plug according to the present invention;

fig. 2 is a schematic structural diagram of another intermediate state of a delayed power connection type safety plug according to the present invention;

fig. 3 is a wiring circuit diagram of a capacitor portion in a delay connection type safety plug according to the present invention.

In the figure: the device comprises a shell 1, a pin 2, an electric groove 3, an electric plate 4, an electric block 5, an action box 6, a return spring 7, a push rod 8, an electromagnet 9, a push plate 10, a piezoelectric block 11, a striker plate 12, a contact 13, a capacitor 14, a diode 15, an electric spring 16 and a connecting plate 17.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-3, a delayed power connection type safety plug comprises a housing 1, two contact pins 2 are fixed on the side wall of the housing 1, a power connection slot 3 corresponding to the two contact pins 2 is arranged inside the housing 1, a connection mechanism is arranged inside the power connection slot 3, the connection mechanism comprises a power connection plate 4 fixed on the inner wall of the power connection slot 3, a power connection block 5 and an action box 6, the side wall of the action box 6 is connected with a push rod 8 through a reset spring 7, the push rod 8 penetrates through the side wall of the action box 6 to extend inwards and is fixed with a push plate 10, the push plate 10 is connected with the inner wall of the action box 6 in a sealing and sliding manner, the push rod 8 is in a T shape and slides in a sealing manner with the action box 6, an electromagnet 9 is fixed on the inner wall of the power connection slot 3.

The protection mechanism comprises a capacitor 14 and a diode 15 which are fixed on the inner wall of the power receiving slot 3, the capacitor 14 is effectively charged when the circuit is normally powered, the existence of the diode 15 ensures that the capacitor 14 is still effectively charged in the circuit, the electromagnet 9 corresponds to the push rod 8, the inner wall of the power receiving slot 3 is connected with a connecting plate 17 through a power receiving spring 16, and two contacts 13 are fixed on the side wall of the power receiving block 5.

The action box 6 is filled with electrorheological fluid and dichloromethane solution, the electrorheological fluid is positioned at one end of the push plate 10 close to the piezoelectric block 11, the dichloromethane solution is positioned at the other side of the push plate 10, the electrorheological fluid is solidified and expanded after being electrified, the dichloromethane is rapidly gasified after absorbing heat, and the connecting positions of the two contacts 13 and the electric block 5 are insulated to avoid direct electrical connection.

Actuating mechanism is including being fixed in the piezoelectric block 11 of shell 1 outer wall, the outer wall of shell 1 is connected with through the torsional spring rotation and hits the board 12 that collides with piezoelectric block 11 counterbalance, piezoelectric block 11 is the piezoceramics piece, will produce high voltage in the twinkling of an eye after the pressurized to be connected with the inside electrorheological fluids of action case 6, be used for supplying electrorheological fluids deformation, connect electric block 5 and be "concave" font, there is the sunk position, when push rod 8 removed to the sunk position, will no longer contact with electric block 5, thereby realize the interrupt of circuit.

In the invention, after a plug is inserted into a socket, a push rod 8 is limited by a reset spring 7 and is not connected with an electric connection block 5 and an electric connection plate 4, so that a circuit is still in a disconnected state, after a collision plate 12 is rotated to connect the push rod with a torsion spring for accumulating force, the collision plate is loosened to impact a piezoelectric block 11, so that the piezoelectric block 11 is pressed to generate electricity, and then the electricity is supplied to electrorheological fluid in an action box 6, the electrorheological fluid is solidified and expanded, a push plate 10 is pushed to move, and the push rod 8 is further caused to move to connect the electric connection plate 4 with the electric connection block 5, so that an electromagnet 9 is electrified to generate a magnetic field, and the push rod 8 is further stably attracted to be stably connected with electricity, at the moment, the circuit can be effectively connected and powered, when a user finds that the power of an electric appliance is larger, the plug can be;

when the current is greatly increased due to overload or short circuit of the line, the electromagnet 9 further attracts the push rod 8, and the push rod 8 rushes to the electromagnet 9 at a higher speed due to sudden increase of the current, so that the push rod 8 quickly reaches the concave position of the power connection block 5, and the interruption of the main line is further completed;

the electromagnet 9 with enhanced magnetism can effectively attract the connecting plate 17 to enable the connecting plate to approach the power connection block 5 and further abut against the two contacts 13, so that the two contacts 13 are contacted to complete power connection of the switch;

in this state, the voltage applied to the two ends of the capacitor 14 disappears, and the capacitor 14 is communicated with the connecting circuit of the electrorheological fluid inside the action box 6, so that the capacitor 14 can continuously supply power to the electrorheological fluid, the electrorheological fluid can be solidified and kept in a solidified state, the movement of the push plate 10 is hindered, the push rod 8 cannot be reset under the elastic force action of the reset spring 7, the push rod 8 is kept at the concave position of the power connection block 5, the interrupted state of the circuit is kept, the circuit damage caused by overcurrent is avoided, the inner part of the plug can be restored to the original state until the capacitor 14 finishes discharging, and the user can find and process the circuit problem in this time;

if the long-time high power work of electrical apparatus in plug working process, the inside temperature of plug will obviously rise, when the plug is inside overheated, connect the unable outward diffusion in time of 3 inside heats in electric tank, lead to the inside dichloromethane solution of action case 6 to absorb the heat fast and gasify, thereby make the inside dichloromethane of action case 6 occupy the space increase, and then promote push pedal 10 and remove, make push pedal 10 drive push rod 8 and remove, and then lead to push rod 8 and connect electric plate 4 and connect the separation of electric block 5, make whole circuit interrupt, restore until 3 inside temperatures in electric tank, and then effectively realize overheat protection and automatic recovery, the protective properties is strong and need not artificial intervention.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a postpone and connect electric type safety plug, includes shell (1), its characterized in that, the lateral wall of shell (1) is fixed with two contact pins (2), the inside of shell (1) is equipped with connects electric tank (3) that correspond with two contact pins (2), connect electric tank (3) inside and be equipped with coupling mechanism, coupling mechanism is including being fixed in connecing electric plate (4) of electric tank (3) inner wall, connecing electric piece (5) and action case (6), the lateral wall of action case (6) is connected with push rod (8) through reset spring (7), push rod (8) run through the lateral wall of action case (6) and inwards extend and be fixed with push pedal (10), push pedal (10) and the inner wall sealing sliding connection of action case (6), the inner wall of connecing electric tank (3) is fixed with electro-magnet (9), shell (1) outside is equipped with actuating mechanism, and a protection mechanism is arranged in the electricity receiving groove (3).

2. The safety plug of claim 1, wherein the protection mechanism comprises a capacitor (14) and a diode (15) fixed on the inner wall of the power receiving slot (3), the electromagnet (9) corresponds to the push rod (8), the inner wall of the power receiving slot (3) is connected with a connecting plate (17) through a power receiving spring (16), and two contacts (13) are fixed on the side wall of the power receiving block (5).

3. The safety plug of claim 2, wherein the action box (6) is filled with electrorheological fluid and dichloromethane solution, and the connection positions of the two contacts (13) and the power connection block (5) are insulated.

4. The safety plug of claim 1, wherein the actuating mechanism comprises a piezoelectric block (11) fixed on the outer wall of the housing (1), the outer wall of the housing (1) is rotatably connected with a striking plate (12) which abuts against the piezoelectric block (11) through a torsion spring, the piezoelectric block (11) is a piezoelectric ceramic block, and the electric connecting block (5) is in a concave shape.