CN113555717B

CN113555717B - Safety protection plug suitable for delayed power plug

Info

Publication number: CN113555717B
Application number: CN202110734933.3A
Authority: CN
Inventors: 杜启川
Original assignee: Dongguan Baochang Industrial Co ltd
Current assignee: Dongguan Baochang Industrial Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2023-07-18
Anticipated expiration: 2041-06-30
Also published as: CN113555717A

Abstract

The invention relates to the technical field of circuit connection, and discloses a safety protection plug suitable for delayed power-on, wherein a chute is formed in the edge part of the power-on side of a shell, a sleeve is fixedly inlaid in the center of the safety protection plug, a sealing bag which is approximately filled is arranged at the deepest part of the sleeve, liquid is filled in the sealing bag, a heating module is arranged in the sealing bag, the conductive end of the heating module extends out of the sealing bag, the heating module supplies power through a live wire and a zero wire, a push rod is movably sleeved in an inner cavity of the sleeve, the push rod can slide in the sleeve and cannot slide out of the sleeve, a protective cover is fixedly arranged on one side of the extending end of the push rod, a power-on hole is formed in the surface of the protective cover and is movably sleeved with a bolt, the protective cover can move along with the movement of the push rod, and a push switch is arranged on the back surface of the shell. The plug can enable liquid in the sealing bag to be heated and expanded through the heating module, push the push rod to move in the sleeve, and the power strip is pushed out by utilizing the reaction force, so that the labor-saving effect is achieved.

Description

Safety protection plug suitable for delayed power plug

Technical Field

The invention relates to the technical field of circuit connection, in particular to a safety protection plug suitable for delayed power plug-in.

Background

A refrigerator is a refrigerating apparatus that maintains a constant low temperature, and is also a civil product that maintains food or other objects in a constant low temperature state. The box body is internally provided with a compressor, a cabinet or a box for freezing by an ice maker and a storage box with a refrigerating device. In life, when the refrigerator needs to move, the refrigerator needs to be powered off at first and then moves, if the moving distance is small and the time is short, the refrigerator cannot be powered on immediately, the refrigerator can be powered on again at least at intervals of 5 minutes, because the high-pressure and the low-pressure in the pipeline are unbalanced after the refrigerator compressor runs, if the refrigerator is powered off immediately, the compressor cannot be started under the action of pressure, or the starting current is larger, so that the compressor winding is burnt out and the compressor is damaged.

The refrigerator plug is a triangular plug, the plug and the socket are tightly matched, in the plug inserting and extracting process, great effort is usually required, fingers easily touch pins in the plug extracting process in a mistaken mode, and at the moment, electric shock accidents are possibly caused because the pins are in electrical contact with zero fire wires.

Disclosure of Invention

Aiming at the problems that the existing refrigerator provided in the background art is difficult to plug with a plug and has electric shock risk when the power supply is disconnected and the current refrigerator is immediately electrified, the invention provides a safety protection plug suitable for delayed plug-in.

The invention provides the following technical scheme: the utility model provides a be suitable for delay safety protection plug of inserting electricity, which comprises a housin, the bolt, the electric wire, the spout has been seted up to the edge portion of the side of inserting electricity of casing and the center is fixed to be inlayed and is had the sleeve, telescopic deepest is equipped with the sealed bag that approximately fills, sealed bag is equipped with liquid and is equipped with heating module, heating module electrically conducts electricity through live wire and zero line, telescopic inner chamber activity has cup jointed the push rod, the push rod can inside the sleeve and can not slide out sleeve outside, push rod and telescopic contact portion are smooth and have the leakproofness, telescopic maximum degree of depth is greater than the maximum length of push rod, the safety cover has been fixedly installed to the extension end one side of push rod, the electric hole has been seted up to the surface of safety cover and cup jointed with the bolt activity, the safety cover cup joints with the spout activity all around, the safety cover can remove along with the removal of push rod, the back of casing is equipped with push switch, push switch can be pressed and be used for controlling heating module's circular telegram and outage.

Preferably, the inside of the push switch is provided with an electromagnet and a reset spring, the attractive force of the electromagnet is larger than the elastic force of the reset spring, the electromagnet is connected with the heating module in series, and the push cap does not extend completely when the push switch is reset.

Preferably, the inner cavity of the sleeve is communicated with the inside of the push switch through a pipeline, and the side surface of the push cap of the push switch is provided with three colors, namely red, green and yellow in sequence.

Preferably, the sealing bag has elasticity and high temperature resistance, and the liquid in the sealing bag is distilled water.

Preferably, the material of the heating module is tungsten and is spiral.

Preferably, the pressing cap of the pressing switch is rounded.

The invention has the following beneficial effects:

1. this plug can make the interior liquid of sealed bag be heated and expand through heating module, promotes the push rod and removes in telescopic inside, utilizes the reaction force realization to insert row release to reached laborsaving effect, moreover because the specific heat capacity of distilled water is great, the expansion liquid can not cool off immediately after the plug is pulled out, and the push rod is in the state of stretching out this moment, and the plug can not insert the socket and supply power to it, has played fine protection to the compressor.

2. According to the invention, the design of the protective cover can enable the plug to be always positioned in the protective cover in the process of automatically pulling out the plug, so that the possibility of electric shock caused by contact between fingers and the plug is avoided, and the safety of the plug is greatly improved.

3. According to the invention, through the design of the electromagnet in the push switch, the push switch cannot rebound when the plug is electrified, and the push switch automatically pops up when the plug is powered off, so that a person is not required to hold the switch for a long time, and the working state of the plug can be more intuitively reflected through the design of the surface color of the push cap of the push switch.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic diagram of the internal structure of the present invention;

fig. 3 is a schematic plan view of the front face of the present invention.

In the figure: 1. a housing; 2. a plug pin; 3. an electric wire; 4. a push rod; 5. a protective cover; 6. a heating module; 7. a sleeve; 8. sealing the bag; 9. pressing the switch; 10. and a sliding groove.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-3, a safety protection plug suitable for delayed power plug includes a casing 1, a plug pin 2, and an electric wire 3, wherein a chute 10 is separately provided at an edge portion of a power plug side of the casing 1, a sleeve 7 is fixedly embedded in a center of the sleeve 7, a sealing bag 8 is provided at a deepest portion of the sleeve 7, a liquid is filled in the sealing bag 8 and a heating module 6 is provided, a conductive end of the heating module 6 extends out of the sealing bag, the heating module 6 is powered by live wire and zero line, a push rod 4 is movably sleeved in an inner cavity of the sleeve 7, the push rod 4 can slide inside the sleeve 7 and cannot slide out of the sleeve 7, a contact portion of the push rod 4 and the sleeve 7 is smooth and has tightness, a maximum depth of the sleeve 7 is greater than a maximum length of the push rod 4, an outer side surface of the push rod 4 and a power plug side surface of the casing 1 are level, a limit shrinkage position of the push rod 4 is provided, the heating module 6 is electrified, the sealing bag 8 is heated to expand by heating, a protective cover 5 is fixedly installed at a side of an extending end of the push rod 4, the plug pin is provided with a power plug hole and is movably sleeved with 2, four sides of the protective cover 5 and the protective cover 10 can be movably sleeved with the chute 10, the protective cover 4 can move along with the protective cover 5, the protective cover 4 and the push rod 4 can move along with the push rod 4, and a power switch 9 can be pressed by pressing the switch 9.

Wherein, the inside of push switch 9 is equipped with electro-magnet and reset spring, and the appeal of electro-magnet is greater than reset spring's elasticity, and electro-magnet and heating module 6 establish ties, and start push switch 9 electro-magnet and will switch on and produce the suction and make it unable resilience to make 6 keep the switch on state, when sealed bag 8 is heated and expanded to promote push rod 4 and make bolt 2 outage, the electro-magnet just cuts off the power supply, reset spring resets it, when push switch 9 is in the reset, the press cap incompletely stretches out.

Wherein, sleeve 7 inner chamber is linked together through the pipeline with push switch 9 inside, and when sealed bag 8 was heated, the gas in sleeve 7 inner chamber also heated expansion simultaneously was conducted pressure to push switch 9 inside, and when sealed bag 8 was heated expansion to push rod 4 made bolt 2 outage, the appeal in push switch 9 disappeared, and the push cap of push switch 9 was pushed out completely under the effect of inside gas pressure, and when sealed bag cooled down, the inside pressure of push switch 9 was balanced, and the push cap reset was returned to the origin. The side surface of the pressing cap is provided with three colors, namely red, green and yellow in sequence, when the pressing switch is pressed, the pressing cap is only exposed to the outside in yellow, so that the plug is in a heating state, when the pressing cap is in three colors of red, green and yellow, the plug is powered off, and when the pressing cap is in two colors of green and yellow, the internal sealing bag is cooled, and the internal sealing bag can be powered on again.

The sealing bag 8 has elasticity and high temperature resistance, the liquid in the sealing bag 8 is distilled water, and the sealing bag has the characteristics of insulation and large specific heat capacity, so that when the plug is taken down, the push rod 4 cannot be rapidly contracted due to rapid cooling of the sealing bag 8.

The material of the heating module 6 is tungsten, the leakage protector is not tripped when the power is on, and the sealing bag 8 can be heated rapidly due to the spiral shape.

Wherein, the pressing cap of the pressing switch 9 is provided with round corners, so that the pressing is more comfortable.

The application method (working principle) of the invention is as follows:

only need press down push switch 9, its inside electro-magnet circular telegram produces the suction and makes the pressure cap unable resilience, heating module 6 circular telegram generates heat, sealed bag 8 is heated the inflation in the twinkling of an eye under heating module 6's heating, the inside inflation at sleeve 7 promotes push rod 4 outwards and stretches out, the socket is hugged closely to safety cover 5, casing 1 wholly moves backward under the reaction force, casing 1 slides backward around safety cover 5 through spout 10, bolt 2 is in the inside of safety cover 5 and takes out from inserting the electric mouth, make the finger can not have the possibility that takes place the contact with bolt 2, when bolt 2 breaks away from with the interior clamping spring of row, heating module 6 outage stop generating heat, the electro-magnet loses magnetism in the push switch 9 and is fully kick-backed under the effect of inside high temperature gas, show three kinds of colours of red green and yellow, indicate that the plug has been cut off at this moment, when the plug is taken off alright safety, sealed bag 8 is still at this moment higher temperature because distilled water in the sealed bag 8 is bigger than the heat capacity reason can not cool down rapidly, plug 4 and safety cover 5 are in the state, 2 is in the inside of safety cover 5, make the inside safety cover 5 take out, make the finger can not take place the contact with bolt 2, make the pressure can not reset the switch, can show the internal-off colour because of the switch is completely, the pressure is reset, the point is completely reset because of the switch has been pressed down, the point has been completely pressed down, the color has been completely has been had the point to the point is completely reset, and has been had the appearance to the appearance point is completely pressed.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a be suitable for delay and insert safety protection plug of electricity, includes casing (1), bolt (2), electric wire (3), its characterized in that: the edge part of the power inserting side of the shell (1) is provided with a chute (10) separately, the center of the power inserting side is fixedly embedded with a sleeve (7), the deepest part of the sleeve (7) is provided with a sealing bag (8) which is approximately filled, the sealing bag (8) is filled with liquid and is provided with a heating module (6), the conductive end of the heating module (6) extends out of the sealing bag, the heating module (6) supplies power through a live wire and a zero wire, the inner cavity of the sleeve (7) is movably sleeved with a push rod (4), the push rod (4) can slide inside the sleeve (7) and cannot slide out of the sleeve (7), the contact part of the push rod (4) and the sleeve (7) is smooth and has tightness, the maximum depth of the sleeve (7) is larger than the maximum length of the push rod (4), one side of the extending end of the push rod (4) is fixedly provided with a protective cover (5), the surface of the protective cover (5) is provided with an electric inserting hole and is movably sleeved with the plug pin (2), the periphery of the protective cover (5) is movably sleeved with a sliding groove (10), the protective cover (5) can move along with the movement of the push rod (4), the back of the shell (1) is provided with a pressing switch (9), and the pressing switch (9) can press the electric conduction and the electric conduction of the heating module (6) to be controlled;

the use method of the safety protection plug comprises the following steps:

when the plug is operated, the push switch (9) is pressed down, the internal electromagnet is electrified to generate suction force so that the push cap cannot rebound, the heating module (6) is electrified to generate heat, the sealing bag (8) is heated and expanded instantly under the heating of the heating module (6), the push rod (4) is pushed to extend outwards by the internal expansion of the sleeve (7), the protective cover (5) is tightly attached to the socket, the whole shell (1) moves backwards under the reaction force, the shell (1) slides backwards around the protective cover (5) through the sliding groove (10), the plug pin (2) moves backwards in the protective cover (5) to be pulled out from the electric inserting opening, the possibility that fingers cannot be contacted with the plug pin (2) is avoided, when the plug pin (2) is separated from the plug socket inner clamping spring, the heating module (6) is powered off to stop heating, the electromagnet in the pressure switch (9) is completely rebounded under the action of the spring and the inner high-temperature gas, three colors are displayed, the plug is powered off at the moment, and can be safely removed, when the plug is removed, the sealing bag (8) is still at a higher temperature, the protective cover (8) is rapidly cooled due to the fact that the water in the protective cover (5) is greatly distilled, the inner part (5) is not cooled down, the plug pin (5) is completely cooled down, and can not be completely cooled down due to the fact that the plug pin (5) is completely cooled down, and the pressure in the push switch (9) disappears due to expansion caused by heat and contraction caused by cold, the push switch (9) returns to the original point, and the push cap displays green and yellow color at the moment, so that the plug is reset and can be used again.

2. A delay plug for protecting safety according to claim 1, wherein: the inside of push switch (9) is equipped with electro-magnet and reset spring, and the appeal of electro-magnet is greater than reset spring's elasticity, and electro-magnet and heating module (6) establish ties, when push switch (9) are in the reset, press the cap and incompletely stretch out.

3. A delay plug for protecting safety according to claim 1, wherein: the inner cavity of the sleeve (7) is communicated with the inside of the push switch (9) through a pipeline, and three colors, namely red, green and yellow, are arranged on the side surface of the push cap of the push switch (9).

4. A delay plug for protecting safety according to claim 1, wherein: the sealing bag (8) has elasticity and high temperature resistance, and the liquid in the sealing bag (8) is distilled water.

5. A delay plug for protecting safety according to claim 1, wherein: the heating module (6) is made of tungsten and is spiral.

6. A delay plug for protecting safety according to claim 1, wherein: the pressing cap of the pressing switch (9) is provided with a round angle.