CN110867707B

CN110867707B - Overload protection type socket

Info

Publication number: CN110867707B
Application number: CN201910898743.8A
Authority: CN
Inventors: 沈小红
Original assignee: Deqing Chengda Metal Materials Co ltd
Current assignee: Linyi Xinke Real Estate Co.,Ltd.
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2021-04-16
Anticipated expiration: 2039-09-23
Also published as: CN110867707A

Abstract

The invention discloses an overload protection type socket which comprises a base shell and a pair of jacks arranged on a panel of the base shell, wherein a device cavity is arranged in the base shell, inserting reeds are arranged in the jacks, a zero line joint and a live line joint are respectively arranged in the two jacks, and a pushing mechanism used for pushing a plug away from the socket when current is overloaded is arranged in the device cavity. By arranging the control mechanism and the push-out mechanism, when the temperature rises sharply due to the overload of the circuit current in the socket, the expansion liquid expands to push the iron sheet to move downwards so as to cut off the plugging reed, thereby ensuring that electrical elements cannot be damaged and catch fire, and separating the pin from the plugging reed by pushing the plug, preventing the overload of the current from occurring again when the circuit is conducted after the temperature is recovered, further causing dangerous situations and ensuring the personal and property safety of users.

Description

Overload protection type socket

Technical Field

The invention relates to the technical field of electric power facilities, in particular to an overload protection type socket.

Background

The socket is a power infrastructure and is a power-taking interface of the terminal power equipment. The existing power sockets are all in-line structures, namely, after a plug of an electric appliance extends into a jack, the plug is directly connected with a metal reed which is arranged in the socket and connected with a zero line and a live line.

When a user connects an electrical appliance with overlarge power into a socket, the current in a circuit in the socket can generate an overload phenomenon, so that an electrical element in the socket generates a large amount of heat instantly, the temperature in the socket rises rapidly, the electrical element in the socket is damaged, the socket cannot be used normally, the electrical element in the socket is on fire when the condition is more serious, the socket generates a spontaneous combustion phenomenon, a fire hazard and an electric shock dangerous condition are caused, and the life and property safety of the user is greatly threatened.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides an overload protection type socket which can push an iron sheet to move downwards by expansion of expansion liquid when the temperature rises sharply due to overload of circuit current in the socket through arranging a control mechanism and a push-out mechanism so as to cut off the power of a plugging reed, ensure that electrical elements cannot be damaged and catch fire, separate a plug pin from the plugging reed by pushing a plug, and prevent the phenomenon of overload of current again when the circuit is conducted after the temperature is recovered, further cause dangerous situations and ensure the personal and property safety of users.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an overload protection type socket, includes the base shell and sets up a pair of jack on the base shell panel, be provided with the device chamber in the base shell, be equipped with the grafting reed in the jack, two be equipped with zero line joint and live wire joint in the jack respectively, install the ejecting mechanism who is used for pushing away the plug from the socket when the electric current transships in the device chamber, install in the jack and be used for with the control mechanism of grafting reed current break and drive ejecting mechanism work when the electric current transships.

Preferably, the push-out mechanism comprises a sliding plug which is connected in the device cavity in a sealing and sliding manner, the upper end of the sliding plug is fixedly connected with a push head through a connecting rod, the push head penetrates through the upper end of the base shell and is connected with the base shell in a sliding manner, the lower end of the device cavity is communicated with the jack through an air guide groove, and the lower end of the sliding plug is elastically connected with the inner bottom of the device cavity through a spring.

Preferably, control mechanism includes two permanent magnets and two iron sheets, two permanent magnet fixed connection is in the jack respectively, two the sealed sliding connection of iron sheet just passes through wire and zero line joint and live wire joint coupling respectively in the jack, permanent magnet and grafting reed coupling, the upper end fixedly connected with of iron sheet leads electrical pillar, the airtight space packing that is located in the middle of permanent magnet and the iron sheet in the jack has thermal expansion liquid.

The invention has the following beneficial effects:

1. by arranging the control mechanism, when the temperature is sharply increased due to the overload of the circuit current in the socket, the expansion liquid expands to push the iron sheet to move downwards to drive the connecting pins to be separated from the slots, so that the plugging reed is powered off, the electrical elements are prevented from being damaged and catching fire, and the personal and property safety of a user is guaranteed;

2. through setting up ejecting mechanism, can be when making the grafting reed outage, squeeze into the device chamber with the air in the jack to promote the sliding plug and shift up, make the pushing ram promote the plug, will participate in with the grafting reed separation, prevent to wait that the temperature resumes normal back circuit switches on once more, current overload's phenomenon appears once more in the circuit in the socket, further guarantee user safety.

Drawings

Fig. 1 is a schematic structural diagram of an overload protection type socket according to the present invention;

fig. 2 is a top view of an overload protection socket according to the present invention.

In the figure: the device comprises a base shell 1, a live wire joint 2, a gas guide groove 3, a spring 4, a zero line joint 5, an iron sheet 6, an inserting reed 7, a jack 8, a sliding plug 9, a pushing head 10, a connecting rod 11, a permanent magnet 12, a conductive column 13 and a device cavity 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-2, an overload protection type socket comprises a base shell 1 and a pair of jacks 8 arranged on a panel of the base shell 1, wherein a device cavity 14 is arranged in the base shell 1, plug-in reeds 7 are arranged in the jacks 8, and a zero line connector 5 and a live line connector 2 are respectively arranged in the two jacks 8.

Install in the device chamber 14 and be used for pushing away the ejecting mechanism of socket with the plug when electric current is transshipped, ejecting mechanism includes sealed sliding connection sliding plug 9 in the device chamber 14, connecting rod 11 fixedly connected with pushing head 10 is passed through to sliding plug 9 upper end, pushing head 10 run through to the upper end of base shell 1 and with base shell 1 sliding connection, the lower tip of device chamber 14 passes through air guide slot 3 and jack 8 intercommunication, the interior bottom elastic connection of spring 4 and device chamber 14 is passed through to the lower extreme of sliding plug 9.

Install in the jack 8 and be used for when the electric current transships 7 current disconnection of pegging graft reed and drive the control mechanism of pushing mechanism work, control mechanism includes two permanent magnets 12 and two iron sheets 6, two permanent magnet 12 fixed connection respectively is in jack 8, two iron sheet 6 seals sliding connection and connects 5 and live wire joint 2 couplings in jack 8 and through wire and zero line respectively, permanent magnet 12 and pegging graft reed 7 coupling, the upper end fixedly connected with of iron sheet 6 leads electrical pillar 13, the airtight space packing that lies in the middle of permanent magnet 12 and iron sheet 6 in jack 8 has thermal expansion liquid.

The thermal expansion fluid is tetrachloromethane, the generally allowable upper limit temperature is 60 ℃, the boiling point of the tetrachloromethane is 76.8 ℃, when the current overload temperature in the circuit rises to be close to 60 ℃ or exceed 60 ℃, the tetrachloromethane starts to expand by heat, the expansion degree is enough to push the conductive posts 13 away from the permanent magnets 12, and meanwhile, the tetrachloromethane is non-conductive and non-flammable, so that the normal use of the socket is not influenced.

In the invention, under normal conditions, the iron sheet 6 is connected with the live wire joint 2 and the zero wire joint 5 and is adsorbed by the magnetic force of the permanent magnet 12, the conductive column 13 is contacted with the permanent magnet 12, the circuit current in the socket can flow to the plug-in reed 7 through the iron sheet 6, the conductive column 13 and the permanent magnet 12, the plug-in reed 7 is electrified, and a user can normally use the socket by inserting the pin of the electric appliance plug into the jack 8; when the circuit temperature in the socket is increased sharply due to the overload of the circuit current, the expansion liquid expands due to heating and pushes the iron sheet 6 to move downwards, the conductive column 13 is separated from the permanent magnet 12 due to the downward movement of the iron sheet 6, the plug-in reed 7 is powered off, the circuit is disconnected, and the socket and electrical elements of an electrical appliance are protected from being damaged or catching fire; when the iron sheet 6 moves downwards, air in the jack 8 below the iron sheet 6 is pressed into the device cavity 14 through the air guide groove 3, so that the air pressure in the device cavity 14 is increased, the sliding plug 9 is pushed to move upwards, the sliding plug 9 moves upwards to drive the push head 10 to lift upwards, the plug is pushed, the plug pin is separated from the plug-in reed 7, and the phenomenon that current overload occurs when the circuit is conducted after the temperature returns to normal is prevented.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An overload protection type socket comprises a base shell (1) and a pair of jacks (8) arranged on a panel of the base shell (1), and is characterized in that a device cavity (14) is arranged in the base shell (1), plug-in reeds (7) are arranged in the jacks (8), a zero line connector (5) and a live line connector (2) are respectively arranged in the two jacks (8), a push-out mechanism used for pushing a plug away from the socket when current is overloaded is installed in the device cavity (14), and a control mechanism used for disconnecting the current of the plug-in reeds (7) and driving the push-out mechanism to act when the current is overloaded is installed in the jacks (8);

the push-out mechanism comprises a sliding plug (9) which is connected in a device cavity (14) in a sealing and sliding manner, the upper end of the sliding plug (9) is fixedly connected with a push head (10) through a connecting rod (11), the push head (10) penetrates through the upper end of the base shell (1) and is connected with the base shell (1) in a sliding manner, the lower end part of the device cavity (14) is communicated with the jack (8) through an air guide groove (3), and the lower end of the sliding plug (9) is elastically connected with the inner bottom part of the device cavity (14) through a spring (4);

control mechanism includes two permanent magnets (12) and two iron sheets (6), two permanent magnet (12) fixed connection respectively is in jack (8), two iron sheet (6) seals sliding connection and connects (5) and live wire joint (2) coupling with zero line in jack (8) and through the wire respectively, permanent magnet (12) and grafting reed (7) coupling, the upper end fixedly connected with of iron sheet (6) leads electrical pillar (13), the airtight space that is located in the middle of permanent magnet (12) and iron sheet (6) in jack (8) is filled with thermal expansion liquid.