CN111541077B

CN111541077B - Safety plug

Info

Publication number: CN111541077B
Application number: CN202010358871.6A
Authority: CN
Inventors: 杨娟; 齐杰
Original assignee: Changshu Huayue Touch Technology Co ltd
Current assignee: Changshu Huayue Touch Technology Co.,Ltd.
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2021-11-23
Anticipated expiration: 2040-04-29
Also published as: CN111541077A

Abstract

The invention discloses a safety plug which comprises a shell, wherein the inner wall of the shell is rotatably connected with a rotating shaft through a torsional spring, a rotating disc is fixed at the upper end of the rotating shaft, the rotating disc is rotatably connected with the side wall of the shell in a penetrating manner, two symmetrical electric connecting posts are inserted at the upper end of the rotating disc, an anti-falling mechanism is arranged inside each of the two electric connecting posts, one ends of the two electric connecting posts, which are close to the rotating shaft, are respectively fixed with a conducting post penetrating through the rotating disc, and the inner wall of the shell is rotatably connected with power-off posts which are respectively abutted against the two conducting posts through the torsional spring. Has the advantages that: through the volume change that the form change arouses after the electrorheological fluids circular telegram in the inflation chamber, realized the promotion to push pedal and ejector pad for thereby the fixture block shifts out the spout and outwards forms protruding effectual resistance to connect the electric column and removes, makes the electric column can't break away from the socket, avoids power consumption process plug and socket separation, can the certain degree accept the pulling of outer wall, makes the user more reassurance not worry that the plug drops easily.

Description

Safety plug

Technical Field

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

Background

The plug is a plug, a plug and a socket for household AC power supply, and the plug is a female connector type power socket which has a bar-shaped or copper plate-shaped protruding male connector and is physically inserted into a slot or a concave hole.

The plug generally uses with the socket cooperation, the completion is to the power supply with electrical apparatus, stretch into the jack after with electrical apparatus's plug during the use, directly with in the socket, the metal reed of connecting the zero live wire contacts, contact failure appears easily after the reed live time is longer, thereby lead to connecing the unstable short circuit that leads to even of electric process, and current plug will generate heat after long-time the use, it is very obvious when great especially externally with electrical apparatus power, and continuous generating heat will lead to the plug inner line hookup location to melt not hard up and lead to dangers such as electric leakage short circuit, and then threaten user safety, consequently need to one kind and can avoid the high temperature to continue the safety plug that uses urgently.

Disclosure of Invention

The invention aims to solve the problems that a plug in the prior art is unsafe to use and easy to loosen, and provides a safety plug.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a safety plug, includes the shell, the inner wall of shell rotates through the torsional spring to be connected with the pivot, the upper end of pivot is fixed with the carousel, the lateral wall through rotation of carousel and shell is connected, the upper end of carousel is inserted and is equipped with the electric post that connects of two symmetries, two the inside of connecting the electric post all is equipped with anti-disengaging mechanism, two the one end that connects the electric post to be close to the pivot all is fixed with the conduction post that runs through the carousel, the inner wall of shell rotates through the torsional spring to be connected with the outage post that offsets respectively with two conduction posts.

In foretell safety plug, anti-disengaging mechanism is including seting up in the inside inflation chamber of connecting the electric post, the screens groove has been seted up to the one side that the inflation chamber is close to the shell, the inside sealed sliding connection in screens groove has the ejector pad, the lateral wall in screens groove runs through the spout of seting up two symmetry settings, two the equal sealed sliding connection in spout inner wall has the fixture block, two the fixture block all is connected with the ejector pad through coupling spring, the anti-loosening groove has been seted up to one side that the shell was kept away from in the inflation chamber, the sealed sliding connection in inner wall in anti-loosening groove has the push pedal, the lateral wall in anti-loosening groove runs through the deformation groove of seting up two symmetry settings, two the inner wall in deformation groove all is fixed with the conducting film.

In the safety plug, the power-off column is made of thermal deformation metal, and the deformation bending and the conduction column are separated after the power-off column is heated.

In the safety plug, the inner wall of one side of the shell, which is far away from the rotary disc, is fixed with the closing box, the inner bottom of the closing box is fixed with the return spring, and one end of the return spring, which is close to the rotary disc, is fixed with the magnetic block which is in sealing sliding connection with the inner wall of the closing box.

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

1. according to the invention, through the volume change caused by the form change after the electrorheological fluid in the expansion cavity is electrified, the push plate and the push block are pushed, so that the clamping block is moved out of the sliding groove to form a bulge outwards so as to effectively prevent the electric connection column from moving, the electric connection column cannot be separated from the socket, the separation of a plug and the socket in the electricity utilization process is avoided, the electricity utilization stability in the electricity utilization process is ensured, the pulling of the outer wall can be accepted to a certain degree, and a user can feel more secure and does not need to worry about that the plug is easy to fall off;

2. according to the invention, the conductive film is deformed and protrudes outwards under the extrusion of hydraulic oil under the pushing action of the push plate, and the conductive film is liquid and can be elastically deformed when the hydraulic oil is used, so that the protruded conductive film is attached to the contact spring inside the socket, and the wrapping effect is achieved, the electrical connection process is more stable, the condition of poor contact caused by the attempted use of the spring is avoided, and the risks of heating, short circuit and the like caused by poor contact are avoided;

3. according to the invention, when the power of an external electrical appliance is high or the service time is long, the temperature in the shell gradually rises along with the increase of the service time, and when the temperature in the shell reaches the abnormal value of the power-off column, the power-off column made of the thermal deformation metal bends and deflects to be separated from the conduction column, so that the whole line is powered off, the danger of short circuit or fire and the like caused by overhigh temperature is avoided, the power-off process is achieved through the deformation of the thermal deformation metal, the response is rapid, the response temperature is stable, and the control is convenient;

4. according to the invention, when the power of an external electrical appliance is high or the service life of the external electrical appliance is long, the temperature in the shell gradually rises along with the increase of the service life, and the dichloromethane solution in the closing box continuously gasifies to increase in volume along with the rise of the temperature, so that the magnetic block is gradually pushed to move towards the power-off column, and finally the power-off column is attracted to deflect so as to separate from the power-on column, so that the whole circuit is powered off, and therefore, the plug and the electrical appliance are effectively protected.

Drawings

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

FIG. 2 is a cross-sectional view taken along the direction A in FIG. 1;

FIG. 3 is a schematic structural view of an electric connecting post portion of the safety plug according to the present invention;

fig. 4 is a schematic structural diagram of another embodiment of a safety plug according to the present invention.

In the figure: the device comprises a shell 1, a rotating shaft 2, a rotating disc 3, a 4-connection electric pole, a 5-transmission electric pole, a 6-disconnection electric pole, an expansion cavity 7, a 8-clamping groove, a 9-push block, a 10-slide groove, a 11-clamping block, a 12-connection spring, a 13-looseness prevention groove, a 14-push plate, a 15-deformation groove, a 16-conductive film, a 17-closing box, an 18-reset spring and a 19-magnetic block.

Detailed Description

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

Example 1

Referring to fig. 1-3, a safety plug, including shell 1, the inner wall of shell 1 is connected with pivot 2 through torsional spring rotation, the upper end of pivot 2 is fixed with carousel 3, carousel 3 runs through the rotation with the lateral wall of shell 1 and is connected, the upper end of carousel 3 is inserted and is equipped with the electrical connection post 4 of two symmetries, the inside of two electrical connection posts 4 all is equipped with anti-disengaging mechanism, the one end that two electrical connection posts 4 are close to pivot 2 all is fixed with the conduction post 5 that runs through carousel 3, the inner wall of shell 1 is connected with the outage post 6 that offsets respectively with two conduction posts 5 through torsional spring rotation.

The anti-falling mechanism comprises an expansion cavity 7 arranged inside the power connection post 4, one side of the expansion cavity 7 close to the shell 1 is provided with a clamping groove 8, the inside of the clamping groove 8 is hermetically and slidably connected with a push block 9, the side wall of the clamping groove 8 is provided with two symmetrically arranged sliding grooves 10 in a penetrating way, the inner walls of the two sliding grooves 10 are hermetically and slidably connected with clamping blocks 11, the two clamping blocks 11 are connected with the push block 9 through connecting springs 12, one side of the expansion cavity 7 far from the shell 1 is provided with an anti-loosening groove 13, the inner wall of the anti-loosening groove 13 is hermetically and slidably connected with a push plate 14, the side wall of the anti-loosening groove 13 is provided with two symmetrically arranged deformation grooves 15 in a penetrating way, the inner walls of the two deformation grooves 15 are both fixed with conductive films 16, the conductive films 16 can deform and have conductive capability, the expansion cavity 7 is filled with electrorheological fluid, the clamping groove 8 and the anti-loosening groove 13 are filled with hydraulic oil, after the electrorheological fluid is electrified and solidified and expanded, the latch 11 will be pushed by the hydraulic oil to move out of the sliding groove 10 to form a bump, and indirectly resisted by the solidified electrorheological fluid, so that the electric connecting post 4 cannot move out of the jack of the socket.

The outage post 6 is the thermal deformation metal, and the outage post 6 is heated the back and is crooked and the separation of conduction post 5 with deformation, thereby the outage is accomplished to deformation that can be quick when the 1 inside temperature of shell reaches a definite value, resumes fast behind the inside temperature recovery, and response speed is fast.

In the invention, when the plug is used for connecting the electricity, the electric connecting column 4 is inserted into the socket, the front end of the electric connecting column 4 is combined with the spring sheet in the socket so as to complete the electricity connecting process, so that the whole circuit is electrified, after the circuit is normally electrified, the electrorheological fluid in the expansion cavity 7 is electrically solidified, the volume of the electrorheological fluid is increased in the process, because the inner space of the expansion cavity 7 is limited, the expansion of the volume of the electrorheological fluid pushes the push block 9 and the push plate 14 to move, so that the hydraulic oil in the clamping groove 8 and the anti-loosening groove 13 flows, the block 11 moves out of the sliding groove 10 under the pushing of the hydraulic oil along with the movement of the push block 9 and the hydraulic oil in the clamping groove 8, therefore, the fixture block 11 protrudes out of the electric connecting column 4 to abut against the inside of the socket, so that the electric connecting column 4 cannot be pulled out of the jack of the socket, the power failure caused by accidental pulling in the use process of the plug is avoided, and the smoothness of power utilization is ensured;

the conductive film 16 is pressed and deformed by the pushing of the hydraulic oil in the anti-loosening groove 13, so that the conductive film 16 protrudes out of the deformation groove 15 to wrap the reed inside the socket, the electric connection between the plug and the socket is more stable, the poor contact condition caused after long-time use is effectively avoided, and even if the plug is pulled and shaken to a certain extent, the good electric contact can still be kept due to the close fit of the wrapping, so that the stable power utilization is ensured, and excessive heating caused by the poor contact is avoided;

when the plug needs to be pulled out, only the shell 1 needs to be held by hand and rotated, after the shell 1 is rotated, the electric connection column 4 is connected with the socket jack, so that the shell 1 cannot drive the rotary disc 3 to rotate when rotating, and the electric connection column 6 which is originally abutted against the conduction column 5 is separated from the rotary disc after rotating, so that the whole circuit is powered off, after the power is cut off, the electrorheological fluid is liquefied, the volume is reduced, the conductive film 16 loses driving force and recovers deformation without wrapping a reed, the same clamping block 11 is not limited any more, and further the clamping block is contracted into the sliding groove 10 by external driving force in the plug pulling-out process, so that the electric connection column 4 can be normally pulled out, the pulling-out process is very convenient, and the electric shock phenomenon in the pulling-out process can be avoided by power failure in advance;

at too big or the live time overlength with electrical apparatus power, the inside temperature of plug will rise, and rise to a definite value at 1 inside temperature of shell after, originally with the outage post 6 of conduction post 5 counterbalance crooked with deformation to break away from conduction post 5, reach the effect of overheated outage, avoid the plug overheated to lead to the inner line to melt and risk such as short circuit, make the power consumption process safer.

Example 2

Referring to fig. 4, a safety plug, which comprises an outer shell 1, the inner wall of shell 1 is connected with pivot 2 through the torsional spring rotation, the upper end of pivot 2 is fixed with carousel 3, carousel 3 runs through the rotation with the lateral wall of shell 1 and is connected, the upper end of carousel 3 is inserted and is equipped with the electric post 4 that connects of two symmetries, two inside of connecting electric post 4 all is equipped with anti-disengaging mechanism, two one ends that connect electric post 4 to be close to pivot 2 all are fixed with the conduction post 5 that runs through carousel 3, the inner wall of shell 1 is connected with the outage post 6 that offsets respectively with two conduction posts 5 through the torsional spring rotation.

Anti-disengaging mechanism is including offering in the inside inflation chamber 7 of power connection post 4, screens groove 8 has been seted up to one side that inflation chamber 7 is close to shell 1, the inside sealed sliding connection in screens groove 8 has ejector pad 9, the lateral wall in screens groove 8 runs through the spout 10 of seting up two symmetry settings, the equal sealed sliding connection in two spout 10 inner walls has fixture block 11, two fixture blocks 11 all are connected with ejector pad 9 through coupling spring 12, anti-loosening groove 13 has been seted up to one side that expansion chamber 7 kept away from shell 1, anti-loosening groove 13's inner wall sealed sliding connection has push pedal 14, anti-loosening groove 13's lateral wall runs through the deformation groove 15 of seting up two symmetries settings, the inner wall in two deformation grooves 15 all is fixed with conducting film 16.

A return spring 18 is fixed at the inner bottom of the closing box 17, a magnetic block 19 which is in sealing sliding connection with the inner wall of the closing box 17 is fixed at one end, close to the rotary disc 3, of the return spring 18, the closing box 17 is filled with a hot evaporation solution dichloromethane solution, the gasification volume is increased after the closing box is heated, the magnetic block 19 is pushed to move, and the power-off column 6 is made of a metal material, is subjected to the magnetic attraction of the magnetic block 19 and deflects towards the power-off column.

The difference between this embodiment and embodiment 1 is that, when the power of the electrical appliance is too large or the service time is too long, when the temperature inside the plug will rise, the dichloromethane solution inside the shut-off box 17 will be heated and vaporized, and the magnetic block 19 is pushed to move along with the increasing of the gasification quantity along with the temperature rise, so that the magnetic block 19 is continuously close to the power-off column 6 along with the temperature rise in the shell 1, so that the magnetic attraction of the magnetic block 19 to the power-off post 6 is stronger and stronger, and finally the power-off post 6 deflects to one side of the magnetic block 19, thereby the whole circuit is powered off, the damage of high temperature to the plug is avoided, compared with the mode of using heat deformation metal, the mode has no loss, the service life of the power-off post 6 is not influenced by the increase of the service time, the cost of the magnetic block 19 and the dichloromethane solution is low, the service life of the plug can be greatly prolonged, and the manufacturing cost is reduced.

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. A safety plug comprises a shell (1) and is characterized in that a rotating shaft (2) is connected to the inner wall of the shell (1) in a rotating mode through a torsion spring, a rotary disc (3) is fixed to the upper end of the rotating shaft (2), the rotary disc (3) is connected with the side wall of the shell (1) in a penetrating and rotating mode, two symmetrical electric connecting columns (4) are inserted into the upper end of the rotary disc (3), anti-falling mechanisms are arranged inside the two electric connecting columns (4), two transmission guide columns (5) penetrating the rotary disc (3) are fixed to the ends, close to the rotating shaft (2), of the two electric connecting columns (4), power-off columns (6) respectively abutted against the two transmission guide columns (5) are connected to the inner wall of the shell (1) in a rotating mode through the torsion spring, each anti-falling mechanism comprises an expansion cavity (7) arranged inside the corresponding electric connecting columns (4), a clamping groove (8) is formed in one side, close to the shell (1), of each expansion cavity (7), the inside seal sliding connection of screens groove (8) has ejector pad (9), the lateral wall of screens groove (8) runs through spout (10) of seting up two symmetry settings, two spout (10) inner wall all seal sliding connection has fixture block (11), two fixture block (11) all are connected with ejector pad (9) through coupling spring (12), expansion chamber (7) are kept away from one side of shell (1) and have been seted up anti-loosening groove (13), the inner wall seal sliding connection of anti-loosening groove (13) has push pedal (14), the lateral wall of anti-loosening groove (13) runs through deformation groove (15) of seting up two symmetry settings, two the inner wall of deformation groove (15) all is fixed with conducting film (16), and the expansion intracavity portion is filled with the electrorheological fluids, screens groove and anti-loosening inslot portion are full of hydraulic oil.

2. A safety plug according to claim 1, wherein the post (6) is a heat deformable metal, the post (6) being heated to separate the deformed bend from the post (5).

3. A safety plug according to claim 1, characterized in that the inner wall of the side of the housing (1) far from the rotary disc (3) is fixed with a closing box (17), the inner bottom of the closing box (17) is fixed with a return spring (18), and one end of the return spring (18) close to the rotary disc (3) is fixed with a magnet (19) which is in sealing sliding connection with the inner wall of the closing box (17).