Plug with overheating protection function

Abstract

The utility model relates to the technical field of electrical safety protection equipment, in particular to a plug with overheating protection, which comprises two copper pins, an electric control board, a power line electrically connected with the electric control board, a detection assembly, a temperature controller and a tripping assembly. The detection assembly comprises a reset frame, the tripping assembly is connected with one side of the reset frame in a buckled mode, and a temperature controller is arranged on the other side of the reset frame. One end of each copper pin is fixed on the reset frame and is in contact connection with the temperature controller, and the temperature controller is electrically connected with the electric control board. The two copper plug pins respectively correspond to the plug pieces of the live wire and the plug pieces of the zero wire, the two copper plug pins are in direct contact with the temperature controller in the process that the two copper plug pins are connected with the socket in an inserted mode to be powered on, and the temperature can be directly, more effectively and rapidly transmitted to the temperature controller. When the temperature of the copper pin exceeds the set temperature range of the temperature controller, the copper pin can be tripped and powered off immediately under the cooperation of the detection assembly and the tripping assembly, and the plug and an electric appliance connected with the plug are well protected.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical safety protection equipment, and particularly relates to a plug with overheat protection. Background Art

[0002] At present, during the process of plugging and connecting a common general-purpose power plug and a general-purpose power socket in the market, due to poor quality and insufficient clamping force, there will be a situation of poor plugging and connecting. Once the pin of the plug is in poor contact with the socket insert or there is an overload situation, abnormal temperature rise will occur in current-carrying components such as pins and inserts, which will cause overheating. Prolonged use will melt the plastic shell around the insert, and the plug or socket will be burned out or an electrical safety accident will occur. Content of the Utility Model

[0003] In order to solve the technical defects mentioned in the above background art, the purpose of the utility model is to provide a plug with overheat protection.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A plug with overheat protection includes two copper pins, an electronic control board, a power cord electrically connected to the electronic control board, a detection component, and a tripping component; it also includes a thermostat; the detection component includes a reset frame, the tripping component is snap-connected to one side of the reset frame, and the thermostat is arranged on the other side of the reset frame; one ends of the two copper pins are both fixed on the reset frame and are in contact connection with the thermostat, and the thermostat is electrically connected to the electronic control board.

[0006] By adopting the above technical scheme, the two copper pins respectively correspond to the inserts of the live wire and the neutral wire. When overheating occurs during the process of plugging and connecting the two copper pins to the socket and energizing, through the direct contact between the two copper pins and the thermostat, the temperature can be directly, more effectively, and quickly transmitted to the thermostat. When the temperature of the copper pin exceeds the set temperature range of the thermostat, the copper pin can immediately trip and cut off the power under the cooperation of the detection component and the tripping component, which has a good protective effect on the plug and the electrical appliance connected thereto.

[0007] Further, the copper pin includes a pin body, a connecting piece, and a static contact piece. One end of the pin body close to the electronic control board is connected to one end of the connecting piece, and the other end of the connecting piece is connected to the lower surface of the thermostat. One end of the pin body close to the electronic control board is fixedly connected to the static contact piece, and the other end of the static contact piece protrudes and a static contact point is arranged on its lower surface, with a compact structure, saving space and cost.

[0008] Further, the connecting piece and the static contact piece are arranged side by side at one end of the pin body, and both protrude from the pin body in opposite directions and are arranged in a staggered manner, avoiding mutual interference during the operation of each structure and having a higher space utilization rate.

[0009] Further, the pin body, the connecting piece and the static contact piece are integrally formed, improving the processing and assembly efficiency and the signal transmission stability.

[0010] Further, at least one through sensing hole is provided at one end of the electronic control board close to the thermostat. One end of the thermostat is provided with an L-shaped sensing member, and the end of the sensing member away from the thermostat penetrates through the sensing hole, improving the sensing and signal transmission efficiency.

[0011] Further, the plug with overheat protection includes an upper shell and a lower shell. The electronic control board, the detection component, the tripping component and the thermostat are all arranged in the area enclosed by the upper shell and the lower shell. An installation hole is provided at the position of the lower shell corresponding to each of the two copper pins, and a clamping groove is arranged inside the lower side of the installation hole. A clamping block protrudes from one side of the copper pin corresponding to the clamping groove, and a guiding inclined surface is arranged at the end of the clamping block away from the thermostat, facilitating the installation and disassembly of the copper pin.

[0012] Further, a groove is arranged on the other side of the copper pin corresponding to the position of the clamping block, and the area of the groove is greater than or equal to the surface area of the side of the clamping block in contact with the copper pin. The groove provides space for the deformation of the copper pin and can also reduce the corresponding thickness of the copper pin, improving the assembly efficiency.

[0013] In summary, the beneficial effects of the present utility model are as follows:

[0014] The two copper pins of the present utility model respectively correspond to the inserts of the live wire and the neutral wire. When overheating occurs during the plugging and unplugging connection and energization operation of the two copper pins and the socket, through the direct contact between the two copper pins and the thermostat, the temperature can be directly, more effectively and quickly transmitted to the thermostat. When the temperature of the copper pin exceeds the set temperature range of the thermostat, the copper pin can immediately trip and cut off the power under the cooperation of the detection component and the tripping component, playing a good protective role for the plug and the electrical appliance connected thereto. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of an embodiment of the plug with overheat protection of the present utility model.

[0016] Figure 2 is a schematic internal structural diagram of an embodiment of the plug with overheat protection of the present utility model.

[0017] Figure 3 Side view of the internal assembly structure of an embodiment of the plug with overheat protection of the present utility model.

[0018] Figure 4 Schematic structural diagram of an embodiment of the copper pin of the plug with overheat protection of the present utility model.

[0019] Figure 5 Top view of an embodiment of the installation structure of the copper pin and the lower shell of the plug with overheat protection of the present utility model.

[0020] Figure 6 is Figure 5 Schematic cross-sectional structure diagram of A-A in

[0021] Explanation of the reference numerals in the figure:

[0022] 1. Plug with overheat protection; 2. Copper pin; 21. Pin body; 22. Connecting piece; 23. Static contact piece; 231. Static contact point; 24. Block; 25. Groove; 3. Electric control board; 31. Induction hole; 4. Power cord; 5. Detection component; 51. Reset frame; 52. Reset rod; 6. Tripping component; 61. Positioning piece; 62. Solenoid valve; 63. Iron core; 7. Thermostat; 71. Inductive part; 8. Upper shell; 9. Lower shell; 91. Installation hole; 92. Card slot; 10. Copper moving contact piece. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model belong to the scope of protection of the present utility model.

[0024] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on the present utility model.

[0025] In the description of the present utility model, if there are words such as "several" for description, its meaning is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the base number, above, below, within, etc. are understood as including the base number. If there is a description of first, second, third, etc., it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0026] The following will further elaborate on the embodiments of the present utility model in conjunction with the attached Figures 1-6 drawings.

[0027] A plug 1 with overheat protection, as Figure 1 shown in Figure 2 and Figure 3 , includes two copper pins 2, an electronic control board 3, a power cord 4 electrically connected to the electronic control board 3, a detection component 5, a tripping component 6, and a thermostat 7. The detection component 5 includes a reset frame 51. The tripping component 6 is snap-connected to one side of the reset frame 51. The other side of the reset frame 51 is provided with a thermostat 7. One ends of the two copper pins 2 are both fixed on the reset frame 51 and are in contact connection with the thermostat 7. The thermostat 7 is electrically connected to the electronic control board 3.

[0028] Among them, the two copper pins 2 respectively correspond to the inserts for the live wire and the neutral wire. When overheating occurs during the plug-and-play connection and power-on operation of the two copper pins 2 and the socket, through the direct contact between the two copper pins 2 and the thermostat 7, the temperature can be directly, more effectively, and quickly transmitted to the thermostat 7. When the temperature of the copper pin 2 exceeds the set temperature range of the thermostat 7, the copper pin 2 can immediately trip and cut off the power under the cooperation of the detection component 5 and the tripping component 6, which has a good protective effect on the plug and the electrical appliance connected thereto.

[0029] In this embodiment, please refer to Figure 2 and Figure 4 . The copper pin 2 includes a pin body 21, a connecting piece 22, and a static contact piece 23. One end of the pin body 21 close to the electronic control board 3 is connected to one end of the connecting piece 22. The other end of the connecting piece 22 is connected to the lower surface of the thermostat 7. One end of the pin body 21 close to the electronic control board 3 is fixedly connected to the static contact piece 23. The other end of the static contact piece 23 protrudes, and a static contact point 231 is provided on its lower surface. The structure is compact, saving space and cost.

[0030] Specifically, the connecting piece 22 and the static contact piece 23 are arranged side by side at one end of the pin body 21, and both protrude from the pin body 21 in the opposite direction and are arranged in a staggered manner, avoiding mutual interference during the operation of each structure and having a higher space utilization rate.

[0031] The plug body 21, the connecting piece 22 and the static contact piece 23 are integrally formed to improve the efficiency of processing and assembly as well as the stability of signal transmission.

[0032] At least one through sensing hole 31 is provided at one end of the electric control board 3 close to the thermostat 7. An L-shaped sensing member 71 is provided at one end of the thermostat 7, and the end of the sensing member 71 away from the thermostat 7 passes through the sensing hole 31 to improve the efficiency of sensing and signal transmission. In this embodiment, two sensing members 71 and two sensing holes 31 are provided.

[0033] Please refer to Figure 2 , Figure 5 , Figure 6 The plug 1 with overheat protection also includes an upper shell 8 and a lower shell 9. The electric control board 3, the detection component 5, the trip component 6, and the thermostat 7 are all arranged in the area enclosed by the upper shell 8 and the lower shell 9. The lower shell 9 is provided with a through mounting hole 91 at the position relative to the two copper pins 2, and a card slot 92 is provided inside the lower side of the mounting hole 91. A card block 24 is protrudingly provided on one side of the copper pin 2 relative to the card slot 92, and a guiding inclined surface is provided on the end of the card block 24 away from the thermostat 7 to facilitate the installation and removal of the copper pin 2.

[0034] A groove 25 is provided on the other side of the copper pin 2 relative to the position of the clamp 24, and the area of ​​the groove 25 is greater than or equal to the surface area of ​​the side of the clamp 24 in contact with the copper pin 2. The groove 25 provides space for the deformation of the copper pin 2, and can also reduce the corresponding thickness of the copper pin 2, thereby improving the assembly efficiency.

[0035] Specifically, the plug pin body 21 is provided with the block 24 and the groove 25. The surface area of ​​the side of the block 24 away from the plug pin body 21 is smaller than the surface area of ​​the side of the block 24 in contact with the plug pin body 21, and the lower end of the block 24 is provided with the guide slope. The plug end of the copper pin 2 is inserted into the mounting hole 91 from the inside of the lower shell 9 and passes through the mounting hole 91 until the block 24 is interference-connected in the slot 92, which makes installation more convenient.

[0036] The specific structures of the detection component 5 and the tripping component 6 are basically the same as those of the existing leakage protection. During use, when the two copper pins 2 are respectively inserted into the holes of the corresponding sockets, each copper pin 2 corresponds to a copper moving contact 10, and the copper moving contact 10 is connected to the corresponding power cord 4. The copper moving contact 10 is on one side of the corresponding copper pin 2 and is used to control the on and off of the load circuit. When the reset lever 52 of the detection component 5 is pressed down, it is latched with the positioning piece 61 of the tripping component 6 and is also latched with the reset frame 51 together, so that the plug is in the reset latched state, and the moving contact on the copper moving contact 10 is connected and communicated with the static contact 231 on the copper pin 2. When the plug overheats, the electronic control board 3 controls the solenoid valve 62 and the iron core 63 in the tripping component 6 to pull out the positioning piece 61, so that the reset lever 52 is decoupled and separated from the positioning piece 61 and the reset frame 51, and the plug is in the disconnected tripping state, and the moving contact on the copper moving contact 10 is separated and disconnected from the static contact 231 on the copper pin 2, effectively protecting the plug and the electrical appliance.

[0037] The embodiments of the specific implementation manners are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A plug (1) with overheat protection, comprising two copper pins (2), an electric control board (3), a power line (4) electrically connected to the electric control board (3), a detection component (5) and a trip component (6); characterized in that: It also includes a thermostat (7); the detection component (5) includes a reset frame (51), the trip component (6) is snap-connected to one side of the reset frame (51), and the other side of the reset frame (51) is provided with the thermostat (7); one end of the two copper pins (2) are fixed to the reset frame (51) and are in contact with the thermostat (7), and the thermostat (7) is electrically connected to the electric control board (3).

2. The plug (1) with overheat protection according to claim 1, characterized in that: The copper plug pin (2) comprises a plug pin body (21), a connecting piece (22) and a static contact piece (23); one end of the plug pin body (21) close to the electric control board (3) is connected to one end of the connecting piece (22), and the other end of the connecting piece (22) is connected to the lower surface of the thermostat (7); one end of the plug pin body (21) close to the electric control board (3) is fixedly connected to the static contact piece (23), and the other end of the static contact piece (23) is protrudingly arranged and a static contact point (231) is arranged on its lower surface.

3. The plug (1) with overheat protection according to claim 2, characterized in that: The connecting piece (22) and the static contact piece (23) are arranged side by side at one end of the plug-in leg body (21), and both are arranged to protrude in opposite directions from the plug-in leg body (21).

4. The plug (1) with overheat protection according to claim 2, characterized in that: The plug body (21), the connecting piece (22) and the static contact piece (23) are integrally formed.

5. The plug (1) with overheat protection according to claim 1, characterized in that: At least one through sensing hole (31) is provided at one end of the electric control board (3) close to the temperature controller (7); an L-shaped sensing element (71) is provided at one end of the temperature controller (7); and the sensing element (71) is provided at one end away from the temperature controller (7) and passes through the sensing hole (31).

6. The plug (1) with overheat protection according to claim 1, characterized in that: The plug (1) with overheat protection comprises an upper shell (8) and a lower shell (9); the electric control board (3), the detection component (5), the trip component (6), and the temperature controller (7) are all arranged in an area enclosed by the upper shell (8) and the lower shell (9); the lower shell (9) is provided with a through mounting hole (91) at a position relative to the two copper pins (2), and a card slot (92) is provided inside the lower side of the mounting hole (91); a card block (24) is protrudingly provided on one side of the copper pin (2) relative to the card slot (92), and a guide inclined surface is provided on one end of the card block (24) away from the temperature controller (7).

7. The plug (1) with overheat protection according to claim 6, characterized in that: A groove (25) is provided on the other side of the copper plug pin (2) relative to the position of the clamping block (24), and the area of ​​the groove (25) is greater than or equal to the surface area of ​​the side of the clamping block (24) in contact with the copper plug pin (2).

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