CN212062888U - Plug and electrical equipment - Google Patents
Plug and electrical equipment Download PDFInfo
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- CN212062888U CN212062888U CN202020762940.5U CN202020762940U CN212062888U CN 212062888 U CN212062888 U CN 212062888U CN 202020762940 U CN202020762940 U CN 202020762940U CN 212062888 U CN212062888 U CN 212062888U
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Abstract
The utility model discloses a plug and electrical equipment, wherein, the plug includes: a plug body provided with pins; the power line is connected to the plug body; the temperature limiter assembly is arranged between the power line and the plug pins and comprises a metal elastic sheet, the metal elastic sheet is provided with an initial state for electrically connecting the power line with the plug pins and an over-temperature protection state for disconnecting the power line with the plug pins when the plug pins are deformed under temperature, and the metal elastic sheet is switched between the initial state and the over-temperature protection state. The utility model adopts the metal elastic sheet with initial state and over-temperature protection state directly, which can realize the overload protection of the circuit; because the state switching of the metal elastic sheet at different temperatures is directly used for realizing the connection or disconnection of the plug pins and the power line, the whole structure is simple, automatic reset can be realized, and the production cost of the plug is favorably reduced.
Description
Technical Field
The utility model relates to a domestic appliance field, in particular to plug and electrical equipment.
Background
In the existing common plug, in order to prevent the circuit from overloading, an overload protection device is usually provided, and the common overload protection device usually realizes power failure in a fusing manner, a tripping manner and the like. The power is cut off in a fusing mode, a fusing conductor needs to be replaced after each fusing, and the operation is complicated; the mode of cutting off the power through tripping operation needs manual reset after tripping operation, the reset structure needs to occupy larger space, the size of the plug is increased, the reset structure is relatively complex, the production cost is increased, and the reset structure is not suitable for actual production and application.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a plug and electrical equipment, aim at improving the problem that current plug needs manual reset, the structure is complicated.
In order to achieve the above object, the present invention provides a plug, including:
a plug body provided with pins;
the power line is connected to the plug body;
the temperature limiter assembly is arranged between the power line and the plug pins and comprises a metal elastic sheet, the metal elastic sheet is provided with an initial state for electrically connecting the power line with the plug pins and an over-temperature protection state for disconnecting the power line with the plug pins when the plug pins are deformed under temperature, and the metal elastic sheet is switched between the initial state and the over-temperature protection state.
Optionally, the power line is connected with a first mounting terminal, the pin is connected with a second mounting terminal, the first mounting terminal and the second mounting terminal are oppositely arranged on the plug body, and an accommodating cavity for accommodating and deforming the metal elastic sheet is formed between the first mounting terminal and the second mounting terminal;
when the metal elastic sheet is in the initial state, the first mounting terminal is electrically connected with the second mounting terminal, so that the power line is electrically connected with the pin;
when the metal elastic sheet is in the over-temperature protection state, the first mounting terminal and the second mounting terminal are disconnected, so that the power line and the plug pin are disconnected.
Optionally, the metal elastic piece has a first end and a second end, the first end of the metal elastic piece is fixedly connected to the first mounting terminal, and the second end of the metal elastic piece abuts against the second mounting terminal when the metal elastic piece is in the initial state.
Optionally, the second end of the metal elastic sheet has a first protrusion protruding toward the second mounting terminal.
Optionally, a second protrusion is disposed at a position of the second mounting terminal corresponding to the first protrusion, and when the metal dome is in the initial state, the first protrusion abuts against the second protrusion.
Optionally, an insulating layer is disposed between the second mounting terminal and the metal dome, and a through hole is disposed in the insulating layer, through which the first protrusion passes and abuts against the second mounting terminal.
Optionally, the first mounting terminal is provided with a bending portion, the insulating layer is installed between the bending portion and the second mounting terminal, and the first mounting terminal and the second mounting terminal are respectively and oppositely disposed on two sides of the insulating layer.
Optionally, an installation part is arranged on one side, away from the first installation terminal, of the insulation layer, the installation part and the insulation layer enclose to form an insulation cavity, and the second installation terminal is inserted into the insulation cavity.
Optionally, a first limiting protrusion is disposed on a side of the metal elastic sheet opposite to the first mounting terminal, and the first limiting protrusion abuts against the first mounting terminal when the metal elastic sheet is in the over-temperature protection state;
and/or the presence of a gas in the gas,
one side of the first mounting terminal, which faces the metal elastic sheet, is provided with a second limiting bulge, and the metal elastic sheet is in the over-temperature protection state and is abutted against the second limiting bulge.
Optionally, the plug further comprises an insulating sleeve, and the insulating sleeve is sleeved outside the first mounting terminal and the second mounting terminal.
Optionally, the power line comprises a live wire and a neutral wire, and the pins comprise a live wire pin adapted to the live wire and a neutral wire pin adapted to the neutral wire;
the temperature limiter assembly is arranged between the live wire pin and the live wire, and/or the temperature limiter assembly is arranged between the zero wire pin and the zero wire.
Optionally, the metal elastic piece is a bimetal elastic piece, and the bimetal elastic piece is made of two metals with different thermal expansion coefficients.
The utility model discloses on the basis of above-mentioned plug, provide an electrical equipment, electrical equipment includes the aforesaid the plug.
Optionally, the electrical device is a water heater.
According to the technical scheme of the utility model, by adopting the temperature limiter assembly arranged on the plug body, when the load connected with the plug is overloaded and the metal elastic piece is heated to reach an over-temperature protection state, the metal elastic piece generates elastic deformation, the electric connection between the pin and the power line is disconnected, and then the circuit is broken, so that the overload of the whole circuit is prevented; when the load is not excessive, the metal elastic sheet gradually restores to the initial state, so that the pin and the power line are electrically connected, and the circuit conduction of the load is further realized; the metal elastic sheet with the switching between the initial state and the over-temperature protection state is directly adopted, so that the overload protection of the circuit can be realized; because the state switching of the metal elastic sheet at different temperatures is directly used for realizing the connection or disconnection of the plug pins and the power line, the whole structure of the socket is simple, automatic reset can be realized, and the production cost of the plug is favorably reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of an embodiment of the socket of the present invention in a connection load state;
FIG. 2 is a circuit diagram of an embodiment of the temperature limiter assembly of the present invention disposed between the live wire and the pin;
fig. 3 is a schematic structural view of an embodiment of the temperature limiter assembly of the metal dome of the present invention in an initial state;
fig. 4 is a schematic structural view of an embodiment of a temperature limiter assembly in the over-temperature protection state of the metal dome of the present invention;
fig. 5 is an exploded view of the structure of fig. 4 showing the metal spring piece, the first mounting terminal and the second mounting terminal.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Load(s) | 20 | |
| 21 | |
22 | |
| 23 | |
24 | |
| 25 | |
26 | |
| 30 | |
31 | |
| 311 | |
312 | Second limit bulge |
| 313 | A |
32 | |
| 321 | |
33 | Containing |
| 34 | |
341 | |
| 342 | |
343 | |
| 344 | |
35 | |
| 351 | Through |
352 | |
| 36 | Insulating sleeve |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 and 2, the present invention provides a plug, including: a plug body 20 provided with pins; a power cord connected to the plug body 20; the temperature limiter assembly 30 is arranged between the power line and the plug pins, the temperature limiter assembly 30 comprises a metal elastic sheet 34, the metal elastic sheet 34 has an initial state of electrically connecting the power line with the plug pins and an over-temperature protection state of disconnecting the power line with the plug pins when the metal elastic sheet is deformed under temperature, and the metal elastic sheet 34 is switched between the initial state and the over-temperature protection state. The power cord is matched with the plug pins, the power cord is used for connecting a load 10, the metal elastic sheet 34 is in the initial state, and when the plug body 20 is plugged in a socket, the plug pins are matched with the socket, so that the load 10 is powered on.
When the metal elastic sheet 34 is in the over-temperature protection state, the metal elastic sheet 34 is heated to deform when the temperature rises, the electrical connection between the pin and the power line is disconnected, so that the socket is in an open circuit state, and when the temperature of the metal elastic sheet 34 drops and returns to a normal state, the metal elastic sheet 34 returns to the initial state.
Referring to fig. 3 and 4, the metal elastic sheet 34 is in an initial state at normal temperature, in the initial state, the metal elastic sheet 34 serves as a conductor for connecting the power line and the pins, when the load 10 connected to the power supply is overloaded, the metal elastic sheet 34 deforms under temperature, so that the metal elastic sheet 34 is disconnected from the pins or the power line, and at this time, the circuit is broken; when the temperature of the metal elastic sheet 34 returns to normal, the metal elastic sheet 34 returns to the initial state, so that the circuit is automatically conducted.
Because the metal elastic sheet 34 has an initial state at normal temperature and an over-temperature protection state of temperature deformation, the metal elastic sheet 34 can realize the electrical connection between the power line and the pin at normal temperature, and simultaneously realize the circuit breaking in the over-temperature protection state, so that the pin can realize automatic circuit breaking when being connected with the load 10 and overloaded; because the metal elastic sheet 34 can be switched to the initial state when the metal elastic sheet is restored to the normal temperature, automatic reset is realized, and then the electric connection between the power line and the plug pin is realized again, and further the automatic conduction of the circuit is realized.
The metal elastic sheet 34 can automatically deform in a heated state, so that circuit breaking is realized, circuit overload can be prevented, and the safety of a circuit system is improved; because the metal elastic sheet 34, the power line and the pins are connected with each other to be in an initial state, when the metal elastic sheet 34 is restored to normal temperature, the metal elastic sheet can be automatically reset, and a reset mechanism is not required to be installed on the plug, so that the plug can have an overload open circuit protection state and a normal conduction state, the overall structure is relatively simple, and the safety and the processing cost of the plug are favorably reduced.
The metal elastic sheet 34 is a structure that can deform under a heated state and can recover to an original state after the temperature recovers to a normal state, in an embodiment of the present invention, the metal elastic sheet 34 is a bimetal elastic sheet 34 and is made of two metals with different thermal expansion coefficients, and due to the different thermal expansion coefficients, when the metal elastic sheet deforms under a heated state, the deformation amplitudes of the two metals are different, so that the metal elastic sheet 34 is in a deformed state; when the temperature of the metal elastic sheet 34 is reduced and returns to the normal state, the two metals return to the original state, and the metal elastic sheet 34 returns to the initial state again.
The metal spring 34 may also be made of a plurality of metals with different thermal expansion coefficients, and according to the thermal expansion deformation characteristics of the different metals, the metal spring deforms in a specific direction when heated, and returns to the initial state when returning to the normal temperature, thereby realizing the conduction and disconnection of the circuit between the power line and the pins.
The plug body 20 is an insulator, and the existing common insulating plug body 20 can be adopted. The pins are mounted on the plug body 20 and include a live pin 21 and a neutral pin 22, and some plugs are provided with a ground pin 23, the power cord includes a live 24 for connecting to the live pin 21 and a neutral 25 for connecting to the neutral pin 22, and some plugs are provided with a ground 26 connected to the ground pin 23.
The temperature limiter assembly 30 may be disposed between the live wire pin 21 and the live wire 24, as shown in fig. 2, where L is the live wire 24, N is the neutral wire 25, PE is the ground wire 26, Q is the temperature limiter assembly 30, R is the load 10, the temperature limiter assembly 30 is configured to achieve disconnection or conduction between the live wire 24 and the live wire pin 21, may also be disposed between the neutral wire pin 22 and the neutral wire 25, and is configured to achieve disconnection or conduction between the neutral wire 25 and the neutral wire pin 22, or may also be simultaneously disposed with two sets of the temperature limiter assemblies 30, one set of the temperature limiter assemblies is disposed between the live wire pin 21 and the live wire 24, and the other set of the temperature limiter assemblies is disposed between the neutral wire pin 22 and the neutral wire 25.
The plug body 20 may be provided with a cavity, the temperature limiter assembly 30 is disposed in the cavity, the end of the power cord extends into the cavity and is connected to the temperature limiter assembly 30, and the pin portion extends into the cavity and is connected to the temperature limiter assembly 30, so that the temperature limiter assembly 30 is isolated in the cavity of the plug body 20.
With continuing reference to fig. 3 and fig. 4, in an embodiment of the present invention, the power line is connected to a first mounting terminal 31, the pin is connected to a second mounting terminal 32, the first mounting terminal 31 and the second mounting terminal 32 are oppositely disposed on the plug body 20, and an accommodating cavity 33 for accommodating and deforming the metal elastic piece 34 is formed between the first mounting terminal 31 and the second mounting terminal 32; when the metal elastic sheet 34 is in the initial state, the first mounting terminal 31 is electrically connected to the second mounting terminal 32, so that the power line is electrically connected to the pin; when the metal elastic sheet 34 is in the over-temperature protection state, the first mounting terminal 31 and the second mounting terminal 32 are disconnected, so that the power line and the pin are disconnected. The first mounting terminal 31 and the second mounting terminal 32 are both conductors, when the metal elastic sheet 34 is in the initial state, the metal elastic sheet 34 conducts the first mounting terminal 31 and the second mounting terminal 32 with each other to electrically connect the power line and the pin, when the metal elastic sheet 34 is in the over-temperature protection state, the metal elastic sheet 34 deforms under temperature to disconnect the first mounting terminal 31 and the second mounting terminal 32 with each other, the electrical connection between the power line and the pin is disconnected, and the circuit is in an open circuit state; when the metal elastic sheet 34 is cooled and restored to normal temperature, the metal elastic sheet 34 is restored to the initial state, so that the plug automatically resets, the power line is electrically connected with the plug pins again, and the circuit is conducted.
The first mounting terminal 31 and the second mounting terminal 32 are spaced apart from each other to prevent the power line and the pin from being directly conducted due to the first mounting terminal 31 and the second mounting terminal 32 being in contact with each other.
The accommodating cavity 33 is formed between the first mounting terminal 31 and the second mounting terminal 32, and when the metal elastic sheet 34 is in the over-temperature protection state, the metal elastic sheet 34 deforms under temperature, so that the metal elastic sheet 34 deforms in the accommodating cavity 33. The accommodating cavity 33 is used for limiting the deformation range of the metal elastic sheet 34, so that the metal elastic sheet 34 can only deform relatively in the accommodating cavity 33, and the adjustment of the shape and the size of the accommodating cavity 33 is realized by setting the relative positions of the first mounting terminal 31 and the second mounting terminal 32, thereby limiting the maximum deformation range of the metal elastic sheet 34.
In an embodiment of the present invention, the first mounting terminal 31 and the second mounting terminal 32 may be disposed in parallel to each other, so that the first mounting terminal 31 and the second mounting terminal 32 form the accommodating cavity 33 therebetween, when the metal dome 34 is in the over-temperature protection state, the metal dome 34 is deformed under temperature, and the first mounting terminal 31 or the second mounting terminal 32 can block the metal dome 34 to prevent the metal dome 34 from being excessively deformed. Taking an example that one end of the metal elastic sheet 34 is fixedly connected to the first mounting terminal 31 and the other end is a free end, when the metal elastic sheet 34 is in the initial state, the free end abuts against the second mounting terminal 32 to electrically connect the first mounting terminal 31 and the second mounting terminal 32, and when the metal elastic sheet 34 is in the over-temperature protection state, the free end elastically deforms toward the first mounting terminal 31 to disconnect the electrical connection between the first mounting terminal 31 and the second mounting terminal 32; when the temperature drops, the metal elastic sheet 34 is cooled and restored to the initial state.
When the first mounting terminal 31 and the second mounting terminal 32 are manufactured, an insulating layer 35 may be provided between the first mounting terminal 31 and the second mounting terminal 32 so that the first mounting terminal 31 and the second mounting terminal 32 are isolated from each other and are respectively provided on both sides of the insulating layer 35, and thus the first mounting terminal 31 and the second mounting terminal 32 can be compactly mounted and the volume of the plug can be reduced.
In another embodiment of the present invention, the first mounting terminal 31 and the second mounting terminal 32 are disposed at an included angle, so that the first mounting terminal 31 and the second mounting terminal 32 are not parallel to each other, so that the first mounting terminal 31 and the second mounting terminal 32 are disposed at an interval, and the accommodating cavity 33 is formed between the first mounting terminal 31 and the second mounting terminal 32 for the metal shell 34 to deform. The mutual position setting between the first mounting terminal 31 and the second mounting terminal 32 can be selected according to the internal structure of the socket body, and is not described again.
In order to improve the safety of the plug, optionally, the plug further includes an insulating sleeve 36, the insulating sleeve 36 is configured to be sleeved outside the first mounting terminal 31 and the second mounting terminal 32, the insulating sleeve 36 is hollow inside and covers the first mounting terminal 31 and the second mounting terminal 32, and the power line and the pin extend into the insulating sleeve 36 and are connected with the first mounting terminal 31, so that the first mounting terminal 31 and the second mounting terminal 32 are safer.
In an embodiment of the present invention, the metal elastic sheet 34 has a first end 341 and a second end 342, the first end 341 of the metal elastic sheet 34 is fixedly connected to the first mounting terminal 31, and when the metal elastic sheet 34 is in the initial state, the second end 342 of the metal elastic sheet 34 abuts against the second mounting terminal 32. The first end 341 and the second end 342 are respectively located at different positions of the metal dome 34, the first end 341 and the first mounting terminal 31 are connected to each other, and when the metal dome 34 deforms under temperature, the second end 342 can move relatively and abut against the second mounting terminal 32, so that the first mounting terminal 31 and the second mounting terminal 32 are electrically connected.
A through hole 351 may be formed in the metal dome 34, and the first end 341 may be mounted on the first mounting terminal 31 by using a screw 311, and the second end 342 may abut on the second mounting terminal 32 when the metal dome 34 is in the initial state.
Referring to fig. 3, fig. 4 and fig. 5, in an embodiment of the present invention, the second end 342 of the metal elastic piece 34 has a first protrusion 343 protruding toward the second mounting terminal 32, when the metal elastic piece 34 is in the initial state, the first protrusion 343 can reduce the stroke between the second end 342 of the metal elastic piece 34 and the second mounting terminal 32, so as to improve the sensitivity of the metal elastic piece 34, and further when the circuit is not in the overload state and the metal elastic piece 34 is cooled to recover to the initial state, the metal elastic piece 34 can be quickly reset and is conducted with the second mounting terminal 32.
In this embodiment, optionally, a second protrusion 321 is disposed at a position of the second mounting terminal 32 corresponding to the first protrusion 343, when the metal dome 34 is in the initial state, the first protrusion 343 abuts against the second protrusion 321, and the first protrusion 343 and the second protrusion 321 are aligned with each other, so that the first protrusion 343 can abut against the second protrusion 321, and a stroke of the metal dome 34 when returning to the initial state is further reduced.
In this embodiment, an insulating layer 35 is optionally disposed between the second mounting terminal 32 and the metal dome 34, a through hole 351 for the first protrusion 343 to pass through and abut against the second mounting terminal 32 is disposed on the insulating layer 35, the insulating layer 35 isolates the metal dome 34 from the second mounting terminal 32, when the metal dome 34 is in the initial state, only the first protrusion 343 of the metal dome 34 abuts against the second mounting terminal 32, so as to improve the insulating performance of the metal dome 34.
When the first protrusion 343 protrudes into the through hole 351 and abuts against the second mounting terminal 32, the portion of the metal dome 34 other than the first protrusion 343 is isolated on the side of the insulating layer 35 away from the second mounting terminal 32, so that the metal dome 34 is isolated from the second mounting terminal 32.
In manufacturing the insulating layer 35, the insulating layer 35 may be fixed to the second mounting terminal 32, and in this case, the first mounting terminal 31 may be disposed on a side of the insulating layer 35 away from the second mounting terminal 32, so that the insulating layer 35 isolates the first mounting terminal 31 and the second mounting terminal 32 from each other.
Referring to fig. 5, in an embodiment of the present invention, the first mounting terminal 31 is provided with a bent portion 313, the insulating layer 35 is installed between the bent portion 313 and the second mounting terminal 32, and the first mounting terminal 31 and the second mounting terminal 32 are respectively and oppositely disposed on two sides of the insulating layer 35. The first mounting terminal 31 and the second mounting terminal 32 are isolated by the insulating layer 35, so that the first mounting terminal 31 and the second mounting terminal 32 can be electrically connected to each other only by the metal dome 34.
By providing the bent portion 313, when the first mounting terminal 31 and the second mounting terminal 32 are matched with each other, the accommodating cavity 33 is formed between the first mounting terminal 31 and the insulating layer 35 for accommodating the deformation of the metal elastic sheet 34.
Optionally, a mounting portion 352 is disposed on a side of the insulating layer 35 away from the first mounting terminal 31, the mounting portion 352 and the insulating layer 35 enclose an insulating cavity, and the second mounting terminal 32 is inserted into the insulating cavity. The second mounting terminal 32 is isolated on the side of the insulating layer 35 facing away from the first mounting terminal 31.
The installation portion 352 can be the tip edge part of insulating layer 35 to second mounting terminal 32 direction bending type becomes indent structure, installation portion 352 with insulating layer 35 cladding is in the edge of second mounting terminal 32, in order to improve second mounting terminal 32 with insulating nature between the first mounting terminal 31 keeps apart first mounting terminal 31 with second mounting terminal 32 avoids both to directly switch on.
With reference to fig. 3 and 4, a first limiting protrusion 344 is disposed on one side of the metal elastic sheet 34 facing the first mounting terminal 31, when the metal elastic sheet 34 is in the over-temperature protection state, the first limiting protrusion 344 abuts against the first mounting terminal 31, and the first limiting protrusion 344 is used to reduce a stroke between the metal elastic sheet 34 and the first mounting terminal 31 and prevent the metal elastic sheet 34 from being deformed excessively.
In another embodiment of the present invention, the first mounting terminal 31 faces one side of the metal dome 34 is provided with a second limiting protrusion 312, the metal dome 34 is in the over-temperature protection state, the metal dome 34 abuts against the second limiting protrusion 312, when the metal dome 34 deforms under temperature, the second limiting protrusion 312 can block the metal dome 34, so as to prevent the metal dome 34 from excessively deforming.
In the utility model discloses a further embodiment, metal shrapnel 34 orientation one side of first installation terminal 31 is provided with first spacing arch 344, first installation terminal 31 orientation one side of metal shrapnel 34 is provided with second spacing arch 312, first spacing arch 344 with the corresponding setting of second spacing arch 312, metal shrapnel 34 is in when the excess temperature protect state, first spacing arch 344 with the butt of second spacing arch 312, in order to prevent metal shrapnel 34 excessively deforms.
The utility model discloses on the basis of above-mentioned embodiment, provide an electrical equipment's embodiment.
The electrical equipment comprises the plug in any one of the embodiments, and the plug is used for being plugged into a socket so as to realize circuit conduction of the electrical equipment. By adopting the metal elastic sheet 34, the metal elastic sheet 34 is switched between the initial state and the over-temperature protection state, when the load 10 of the electrical equipment is overloaded, the metal elastic sheet 34 is switched to the over-temperature protection state, so that the socket is in a broken circuit state, and the electrical equipment cannot overload the whole system; when the load 10 of the electrical equipment is not overloaded, the metal elastic sheet 34 is in the initial state, so that the electrical equipment can be powered to operate.
Through adopting the socket can prevent the electrical equipment from causing the influence to the circuit when transshipping, simultaneously, can realize automatic re-setting, does not need manual re-setting, convenient operation.
In this embodiment, the electrical device may be a water heater.
Claims (14)
1. A plug, comprising:
a plug body provided with pins;
the power line is connected to the plug body;
the temperature limiter assembly is arranged between the power line and the plug pins and comprises a metal elastic sheet, the metal elastic sheet is provided with an initial state for electrically connecting the power line with the plug pins and an over-temperature protection state for disconnecting the power line with the plug pins when the plug pins are deformed under temperature, and the metal elastic sheet is switched between the initial state and the over-temperature protection state.
2. The plug of claim 1, wherein the power cord is connected with a first mounting terminal, the pin is connected with a second mounting terminal, the first mounting terminal and the second mounting terminal are oppositely arranged on the plug body, and an accommodating cavity for accommodating and deforming the metal elastic sheet is arranged between the first mounting terminal and the second mounting terminal;
when the metal elastic sheet is in the initial state, the first mounting terminal is electrically connected with the second mounting terminal, so that the power line is electrically connected with the pin;
when the metal elastic sheet is in the over-temperature protection state, the first mounting terminal and the second mounting terminal are disconnected, so that the power line and the plug pin are disconnected.
3. The plug of claim 2, wherein the metal dome has a first end and a second end, the first end of the metal dome is fixedly connected to the first mounting terminal, and the second end of the metal dome abuts against the second mounting terminal when the metal dome is in the initial state.
4. The plug of claim 3, wherein the second end of the metal dome has a first protrusion protruding toward the second mounting terminal.
5. The plug of claim 4, wherein a second protrusion is disposed at a position of the second mounting terminal corresponding to the first protrusion, and when the metal dome is in the initial state, the first protrusion abuts against the second protrusion.
6. The plug of claim 4, wherein an insulating layer is disposed between the second mounting terminal and the metal dome, and a through hole is disposed in the insulating layer for the first protrusion to pass through and abut against the second mounting terminal.
7. The plug of claim 6, wherein the first mounting terminal has a bent portion, the insulating layer is disposed between the bent portion and the second mounting terminal, and the first mounting terminal and the second mounting terminal are disposed opposite to each other on two sides of the insulating layer.
8. The plug of claim 7, wherein a mounting portion is disposed on a side of the insulating layer facing away from the first mounting terminal, the mounting portion and the insulating layer enclosing an insulating cavity, and the second mounting terminal is inserted into the insulating cavity.
9. The plug according to any one of claims 3 to 8, wherein a first limiting protrusion is disposed on a side of the metal dome facing the first mounting terminal, and the first limiting protrusion abuts against the first mounting terminal when the metal dome is in the over-temperature protection state;
and/or the presence of a gas in the gas,
one side of the first mounting terminal, which faces the metal elastic sheet, is provided with a second limiting bulge, and the metal elastic sheet is in the over-temperature protection state and is abutted against the second limiting bulge.
10. The plug of any one of claims 2-8, further comprising an insulating sleeve disposed externally of the first mounting terminal and the second mounting terminal.
11. The plug of any one of claims 1-8, wherein said power cord includes a power cord and a neutral cord, said pins including a power pin compatible with said power cord and a neutral pin compatible with said neutral cord;
the temperature limiter assembly is arranged between the live wire pin and the live wire, and/or the temperature limiter assembly is arranged between the zero wire pin and the zero wire.
12. The plug according to any one of claims 1-8, wherein the metal dome is a bimetal dome made of two metals having different coefficients of thermal expansion.
13. An electrical device, characterized in that it comprises a plug according to any one of claims 1-12.
14. The electrical apparatus of claim 13, wherein the electrical apparatus is a water heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020762940.5U CN212062888U (en) | 2020-05-09 | 2020-05-09 | Plug and electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020762940.5U CN212062888U (en) | 2020-05-09 | 2020-05-09 | Plug and electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212062888U true CN212062888U (en) | 2020-12-01 |
Family
ID=73527157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020762940.5U Active CN212062888U (en) | 2020-05-09 | 2020-05-09 | Plug and electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212062888U (en) |
-
2020
- 2020-05-09 CN CN202020762940.5U patent/CN212062888U/en active Active
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