CN112670774A - Three-pin plug for protecting circuit - Google Patents
Three-pin plug for protecting circuit Download PDFInfo
- Publication number
- CN112670774A CN112670774A CN202011504072.1A CN202011504072A CN112670774A CN 112670774 A CN112670774 A CN 112670774A CN 202011504072 A CN202011504072 A CN 202011504072A CN 112670774 A CN112670774 A CN 112670774A
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- shell
- electromagnet
- sliding cavity
- circuit
- pin plug
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Abstract
The invention discloses a three-pin plug for protecting a circuit, which comprises a shell and an inserting piece, wherein a sliding cavity is arranged in the shell, one side of the sliding cavity is fixedly connected with a resistance layer, a conductive ball is connected in the sliding cavity in a sliding manner, the conductive ball is communicated with a conductive block electrically connected with an external electric appliance circuit when positioned at the bottom of the sliding cavity, the cross sections of the conductive block and the resistance layer are the same, the top of the sliding cavity positioned at the conductive ball is fixedly connected with an electromagnet, two sides of the shell are respectively provided with a connecting port in a penetrating manner, a connecting block is connected in each connecting port in a sealing and sliding manner, and a section of the connecting block positioned in. Has the advantages that: can avoid electric spark caused by intermittent virtual connection current and has the using effect of overheating self-breaking.
Description
Technical Field
The invention relates to the technical field of kitchen facilities, in particular to a three-pin plug for protecting a circuit.
Background
The three-pin plug is the earth wire than the one that two-pin plug was come out, the earth wire often is connected with the electrical apparatus shell, when the circuit took place the electric leakage, the product of shell ground connection has been added, the electric current can flow to ground (earth ground potential is lower) along the earth wire after taking place the electric leakage, thereby can not cause the injury to the people, the shell of the better material preparation of metal or other electric conductive property often can make the shell electrified when the electric leakage takes place, thereby lead to the possibility of electrocution bigger, so the electrical apparatus of metal shell or electrically conductive material shell must use the three-pin plug, and ground connection is handled properly.
Most of electric appliances with metal shells have high power, electric sparks caused by intermittent virtual connection current can be generated frequently in the using process to cause damage to the plug, and meanwhile, when the insulation of the plug is poor, electric shock danger is easy to generate.
Disclosure of Invention
The invention aims to solve the problem that in the prior art, intermittent virtual connection current easily causes electric sparks of a high-power electrical appliance when a power supply is switched on, and provides a three-pin plug for a protection circuit.
In order to achieve the purpose, the invention adopts the following technical scheme: a three-pin plug for protecting a circuit comprises a shell and an inserting piece, wherein a sliding cavity is formed in the shell, a resistance layer is fixedly connected to one side of the sliding cavity, a conductive ball is connected to the sliding cavity in a sliding mode, the conductive ball is communicated with a conductive block electrically connected with an external electric appliance circuit when located at the bottom of the sliding cavity, the cross sections of the conductive block and the resistance layer are the same, and an electromagnet is fixedly connected to the top of the sliding cavity, located at the top of the conductive ball;
the two sides of the shell are respectively provided with a connector in a penetrating manner, each connector is connected with a connecting block in a sealing and sliding manner, the connecting block is located at one section of the fixedly connected pressing plate in the shell, the connecting block is located at one section of the fixedly connected manual control plate outside the shell, each pressing plate is separately provided with a piezoelectric plate, and the piezoelectric plates are electrically connected with the electromagnets.
In the three-pin plug of the protection circuit, the hand control plate is made of an insulating material, the pressing plate is fixedly connected with a plurality of springs, fixed ends of the springs are fixedly connected to the inner wall of the shell, and the springs are made of a memory metal material.
In the three-pin plug of the protection circuit, the circuit where the piezoelectric sheet and the electromagnet are located is connected in parallel with a power supply circuit of an electrical appliance, the conductive ball is made of a ferromagnetic material which can be attracted by the electromagnet, and the magnetic force of the electromagnet on the conductive ball is greater than the gravity of the conductive ball.
In the three-pin plug of the protection circuit, one side of the electromagnet is provided with an element box, an electromagnetic switch is arranged in the element box, a knife switch part in the electromagnetic switch is sleeved with a circuit breaker, and the electromagnetic switch is connected with a power supply circuit of an external electrical appliance in series.
In the three-pin plug of the protection circuit, the electromagnetic switch in the element box is attracted to be powered off when the electromagnet is powered on, and the disconnecting switch is pushed to disconnect the circuit when the rotation amplitude of the knife blade part of the electromagnetic switch is large.
In the three-pin plug of the protection circuit, the circuit breaker consists of a circuit breaking spring and two permanent magnets which are mutually attracted and are used for disconnecting the electric appliance from the power supply under the action of larger thrust.
Compared with the prior art, the invention has the advantages that:
1. when the electric socket is used, the two manual control plates are arranged, when a user pinches the two manual control plates with hands to insert a plug into the socket, the electromagnet is conducted through the piezoelectric sheet, so that the electromagnetic switch is electrified and disconnected with a circuit of an electric appliance, and after the hands are loosened, the piezoelectric sheet is separated from the pressing plate, and the electromagnetic switch is conducted with the circuit of the electric appliance, so that the electric socket has the advantage of being electrified in a delayed mode, and the risk of electric shock of the hands of the user is avoided;
2. the plug is characterized in that a vertical sliding cavity is arranged in a shell of the plug, a conductive ball is arranged at the bottom of the sliding cavity in a sliding mode, the conductive ball is made of ferromagnetic materials attracted by an electromagnet, when the hand control panel is pressed by hand, the conductive ball is attracted to a high position through current generated by pressing of a piezoelectric sheet, and therefore when the circuit is connected, the resistance layer is connected into the circuit;
3. the electromagnet acts on an electromagnetic switch in the element box at the same time, under the condition of only acting on the piezoelectric plate, the magnetic force generated by the electromagnet is small, the electromagnetic switch can only rotate by a small amplitude, the electromagnetic switch can not act on the circuit breaker, when overcurrent occurs or the temperature of the plug is high, the spring made of the memory metal material is twisted, the pressing plate is communicated with the piezoelectric plate, and in the state, an external power supply directly supplies power to the electromagnet, so that the extremely large magnetic force is generated, and the effect of pushing the electromagnetic switch to generate large-amplitude displacement is achieved;
4. when electromagnetic switch's plug-in strip takes place to deflect by a wide margin, will be to the circuit breaker effect, circuit breaker comprises two magnetic forces and the balanced open circuit spring of elasticity and permanent magnet, can shift to another equilibrium point from an equilibrium point under receiving thrust effect, thereby make circuit breaker break off external power and be connected with electrical apparatus, realize hot outage effect, thereby avoid the plug to burn out or overcurrent makes fuse disconnection in the external circuit, influence the use of family's circuit.
Drawings
Fig. 1 is a schematic structural diagram of a three-pin plug of a protection circuit according to the present invention;
fig. 2 is an enlarged schematic view of a portion a of a three-pin plug of a protection circuit according to the present invention;
fig. 3 is a circuit diagram of a three-pin plug of a protection circuit according to the present invention.
In the figure: 1 shell, 2 insertion sheets, 3 sliding cavities, 4 resistance layers, 5 conductive blocks, 6 conductive balls, 7 electromagnets, 8 piezoelectric sheets, 9 pressing plates, 10 connecting blocks, 11 manual control plates, 12 springs and 13 element boxes.
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 three-pin plug of a protection circuit comprises a shell 1 and an insert 2, and is characterized in that a sliding cavity 3 is arranged in the shell 1, one side of the sliding cavity 3 is fixedly connected with a resistance layer 4, a conductive ball 6 is connected in the sliding cavity 3 in a sliding manner, the conductive ball 6 is communicated with a conductive block 5 electrically connected with an external electrical appliance circuit when being positioned at the bottom of the sliding cavity 3, the cross-sectional areas of the conductive block 5 and the resistance layer 4 are the same, and an electromagnet 7 is fixedly connected at the top of the sliding cavity 3 positioned on the conductive ball 6;
the connector has been run through respectively to the both sides of shell 1 and has been seted up, sealed sliding connection has connecting block 10 in every connector, connecting block 10 is located one section fixedly connected with clamp plate 9 of shell 1, connecting block 10 is located one section fixedly connected with hand control board 11 outside shell 1, hand control board 3 passes through hand control, can insert and extract the plug through hand control board 3, every clamp plate 9 leaves mutually and is equipped with a piezoelectric patch 8, piezoelectric patch 8 is connected with 7 electricity of electro-magnet, hand control board 11 adopts insulating material, a plurality of springs 12 of the equal fixedly connected with of every clamp plate 9, the equal fixed connection of stiff end of every spring 12 is on the inner wall of casing 1, spring 12 adopts memory metal material.
The circuit that piezoelectric patches 8 and electro-magnet 7 are located is parallelly connected with the power supply circuit with electrical apparatus, switch is constituteed to piezoelectric patches 8 and clamp plate 9, switch on the circuit of electro-magnet 7 when two sets of clamp plates 9 and the piezoelectric patches 8 on both sides communicate, electrically conductive ball 6 adopts the ferromagnetic material that can be attracted by electro-magnet 7 and electro-magnet 7 is greater than electrically conductive ball 6 self gravity to the magnetic force of electrically conductive ball 6, electro-magnet 7 one side is equipped with component box 13, be equipped with electromagnetic switch in the component box 13, the switch blade part in the electromagnetic switch cup joints and is equipped with a circuit breaker, electromagnetic switch's switch blade can be to circuit breaker effect receiving the effect of great electromagnetic force, electromagnetic switch establishes ties with the power supply circuit of external electrical apparatus.
The electromagnetic switch in the element box 13 is attracted to be powered off when the electromagnet 7 is powered on, namely the piezoelectric sheet 8 and an external power supply have the effect of disconnecting the electromagnetic switch circuit, the electromagnetic switch blade part can push the circuit breaker to disconnect the circuit when the rotation amplitude is large, namely the electromagnetic switch can be disconnected when the external circuit supplies power to the electromagnet, the circuit breaker consists of a circuit breaker spring and two mutually attracted permanent magnets, the connection between an electric appliance and the power supply can be disconnected when the circuit breaker is acted by large thrust, the circuit breaker spring and the two mutually attracted permanent magnets are balanced in a normal state, and the circuit breaker spring and the permanent magnets have two balance points, so that the circuit breaker can move from the mutually connected balance points to the mutually disconnected balance points and keep stable under the thrust action;
when the portable plug is used, in an initial state, the piezoelectric sheet 8 and the pressing plate 9 are disconnected, so that the electromagnet 7 is in a disconnected state, the piezoelectric sheet 8 and the pressing plate 9 are regarded as the switch s3, the electromagnetic switch is set to be the switch s1, the disconnection switch is set to be the switch s2, when the handheld plug is connected with the socket, the s3 is turned on, the s1 is disconnected through current generated by the piezoelectric sheet 8, at the moment, the current is not enough to push the s2 to be disconnected, the s2 is kept connected, at the moment, the socket and an electric appliance are not electrified, and when the hand leaves the plug, the s3 is disconnected, so that the electromagnet 7 is powered off, the s1 is connected, and therefore, the connection.
When the temperature of the plug housing 1 is high, the piezoelectric sheet 8 and the pressing plate 9 which are in the separated state are communicated under the deformation action of the spring 12, at the moment, the power supply directly supplies power to the electromagnet 7, so that the electromagnet 7 generates large magnetic force, namely s1 is disconnected under the communication action of s3, s2 is disconnected by energy generated after s1 is disconnected, at the moment, s1 is kept disconnected again, s2 is converted into the disconnected balanced state from the connected balanced state after s1 is recovered to be connected, the circuit is disconnected, the self-disconnection effect is achieved, when the plug needs to be reused, s2 can be recovered to the other connected state and kept connected, and therefore the plug can be used continuously.
Although the terms of housing 1, insert 2, slide cavity 3, resistive layer 4, conductive block 5, conductive ball 6, electromagnet 7, piezoelectric sheet 8, pressure plate 9, connection block 10, hand control plate 11, spring 12, component box 13, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (6)
1. The three-pin plug for the protection circuit comprises a shell (1) and an inserting piece (2), and is characterized in that a sliding cavity (3) is formed in the shell (1), a resistance layer (4) is fixedly connected to one side of the sliding cavity (3), a conductive ball (6) is connected to the sliding cavity (3) in a sliding mode, the conductive ball (6) is communicated with a conductive block (5) electrically connected with an external electric appliance circuit when located at the bottom of the sliding cavity (3), the cross sectional areas of the conductive block (5) and the resistance layer (4) are the same, and an electromagnet (7) is fixedly connected to the top of the sliding cavity (3) located at the conductive ball (6);
the both sides of shell (1) have run through respectively and have seted up the connector, every sealed sliding connection has connecting block (10) in the connector, connecting block (10) are located one section fixedly connected with clamp plate (9) of shell (1), connecting block (10) are located one section fixedly connected with manual control board (11) outside shell (1), every clamp plate (9) are kept away from and are equipped with a piezoelectric patches (8), piezoelectric patches (8) are connected with electro-magnet (7) electricity.
2. The three-pin plug of a protection circuit according to claim 1, wherein the hand control plate (11) is made of an insulating material, each of the pressure plates (9) is fixedly connected with a plurality of springs (12), the fixed end of each of the springs (12) is fixedly connected to the inner wall of the housing (1), and the springs (12) are made of a memory metal material.
3. The three-pin plug of a protection circuit according to claim 1, characterized in that the circuit in which the piezoelectric plate (8) and the electromagnet (7) are located is connected in parallel with the power supply circuit of the electrical appliance, the conductive ball (6) is made of ferromagnetic material which can be attracted by the electromagnet (7) and the magnetic force of the electromagnet (7) on the conductive ball (6) is greater than the gravity of the conductive ball (6) itself.
4. The three-pin plug of a protection circuit according to claim 2, wherein a component box (13) is arranged on one side of the electromagnet (7), an electromagnetic switch is arranged in the component box (13), a switch blade part in the electromagnetic switch is sleeved with a circuit breaker, and the electromagnetic switch is connected in series with a power supply circuit of an external electrical appliance.
5. A three-pin plug for a protection circuit according to claim 4, wherein the electromagnetic switch in the component housing (13) is attracted to de-energise when the electromagnet (7) is energised, and the breaking switch is pushed to break the circuit connection when the amplitude of rotation of the blade portion of the electromagnetic switch is greater.
6. A three-pin plug for protecting circuit according to claim 5, wherein said cut-off switch is composed of a cut-off spring, two mutually attracting permanent magnets, and is operative to disconnect the electric appliance from the power supply upon receiving a large pushing force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011504072.1A CN112670774B (en) | 2020-12-18 | 2020-12-18 | Three-pin plug for protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011504072.1A CN112670774B (en) | 2020-12-18 | 2020-12-18 | Three-pin plug for protection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112670774A true CN112670774A (en) | 2021-04-16 |
| CN112670774B CN112670774B (en) | 2022-10-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011504072.1A Active CN112670774B (en) | 2020-12-18 | 2020-12-18 | Three-pin plug for protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112670774B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2277409A (en) * | 1993-04-19 | 1994-10-26 | Delta Electronics Inc | Panel mounted electrical or electronic assemblies |
| WO2015003141A1 (en) * | 2013-07-03 | 2015-01-08 | Deka Products Limited Partnership | Fluid connector assembly |
| CN110994241A (en) * | 2019-12-17 | 2020-04-10 | 林小帅 | Intelligent household safety socket |
| CN211428100U (en) * | 2017-03-21 | 2020-09-04 | 陆锦贤 | Circuit protection device |
| CN211655228U (en) * | 2019-12-26 | 2020-10-09 | 苏航 | Energy-saving and convenient light-operated power strip |
| CN111969355A (en) * | 2020-08-17 | 2020-11-20 | 徐勇 | Safety plug with detect function |
-
2020
- 2020-12-18 CN CN202011504072.1A patent/CN112670774B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2277409A (en) * | 1993-04-19 | 1994-10-26 | Delta Electronics Inc | Panel mounted electrical or electronic assemblies |
| WO2015003141A1 (en) * | 2013-07-03 | 2015-01-08 | Deka Products Limited Partnership | Fluid connector assembly |
| CN211428100U (en) * | 2017-03-21 | 2020-09-04 | 陆锦贤 | Circuit protection device |
| CN110994241A (en) * | 2019-12-17 | 2020-04-10 | 林小帅 | Intelligent household safety socket |
| CN211655228U (en) * | 2019-12-26 | 2020-10-09 | 苏航 | Energy-saving and convenient light-operated power strip |
| CN111969355A (en) * | 2020-08-17 | 2020-11-20 | 徐勇 | Safety plug with detect function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112670774B (en) | 2022-10-14 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20220921 Address after: 1st Floor, Block B, Comprehensive Building, No. 602, Jiuzhou Jiang Avenue Middle, Lianjiang City, Zhanjiang City, Guangdong Province, 524400 Applicant after: Donglin Electronic Technology (Zhanjiang) Co.,Ltd. Address before: 236408 no.13-25, Changzhuang, Yanzhuang administrative village, tanpeng Town, Linquan County, Fuyang City, Anhui Province Applicant before: Liu Lei |
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