CN201820968U

CN201820968U - Power socket module with functions of overcurrent, overvoltage and over-temperature protection

Info

Publication number: CN201820968U
Application number: CN201020244488XU
Authority: CN
Inventors: 徐忠厚; 朱维璞; 陈石
Original assignee: Xiamen Set Electronics Co Ltd
Current assignee: Xiamen Set Electronics Co Ltd
Priority date: 2010-07-01
Filing date: 2010-07-01
Publication date: 2011-05-04
Anticipated expiration: 2020-07-01

Abstract

The utility model provides a power socket module with protection functions, particularly relates to a full protection safe socket with overvoltage over-temperature protection and capability of cutting fault current automatically. Three output electrode copper sheets capable of meshing with tabs of a plug are arranged in an inner cavity of a socket. A thermal metal oxide varistor (hereinafter referred to as TMOV) with an alloy type thermal fuse is arranged between a live wire and a zero line to realize overvoltage protection. TMOVs or TMOVs in series connection with discharge tubes are utilized to realize overvoltage protection between the live wire and the ground wire and between the zero line and the ground wire. In structural design, the output electrode copper sheets on the socket are adhered to the TMOV, the alloy type thermal cutoff (hereinafter referred to as TCO) inlayed in the TMOV can realize the protection for the failure of the TMOV and protection for overheat caused by defective meshing among the output electrode copper sheets on the socket and the tabs on the plug, and simultaneously, the TCO in the TMOV generates heat to cut off current when heavier failure current is caused due to short circuit of electric equipment.

Description

A kind of supply socket module with overcurrent-overvoltage overheat protector function

Technical field

The utility model relates to a kind of safety socket, particularly a kind ofly carries overvoltage, excess temperature, cuts off the full guard safety socket module of fault current certainly, and being used for household electrical appliance, IT communication equipment, industrial equipment etc. provides safety power supply safely.

Background technology

Along with the extensive use of microelectronic device, for the overvoltage that prevents to introduce from mains side, thunder and lightning for example, various lightning protection devices and obtain to use widely.The lightning protection device of final stage seems more important.Wherein in case the socket of thunder and lightning source using in a large number all over the world.Because the lightning protection power distributor is usually placed on the table or on the floor, the fire incident that causes owing to this lightning protection device seems quite serious.

Arrival from Electrification Age; people are for easily with the power consumption equipment energized; the socket and the plug of fast insert-pull mode have been designed and have very used widely; and with socket be made into the wall mounted mounting means, the band extending wire movably socket; wherein on the socket of various secured fashions; add pcb board, and on pcb board, increased overcurrent switch, overvoltage crowbar, remote control switching circuit etc.But She Ji socket has all lacked the protection that the heating of loose contact is carried out like this; and structure is huge; particularly be installed in the socket on the wall; because the limitation of spatial volume; often can't increase various protective devices, so that electricity occur and cause overheated fire, self fault-free failure of current ability, the no surge absorbability of causing.

A kind of volume is little, compact conformation, demand easy for installation and that carry the socket of excess temperature, overcurrent, overvoltage protection have just arisen at the historic moment.

The utility model content

Proposition of the present utility model is a kind of lightning protection device that is installed in the final stage on the wall, and this device not only has overcurrent, overvoltage, and overheat protective function, and, can avoid the possibility of catching fire fully.

The utility model relates to a kind of full guard safety socket Module Design, in the socket inner chamber of modular, be provided with the output electrode copper sheet of the inserted sheet of 3 energy interlock plugs, to carry out the current delivery of live wire, zero line, ground wire, the piezo-resistance that is provided with alloy-type temperature fuse (hereinafter to be referred as TMOV) that has adopted patent No. CN200510044661.5 to announce between live wire and zero line is carried out overvoltage protection, has adopted TMOV or the discharge tube of connecting again carries out overvoltage protection between live wire and ground wire, zero line and ground wire; On structural design; the output electrode copper sheet that TMOV is close on the socket reaches good heat conduction; built-in alloy-type temperature fuse (to call TCO in the following text) can be protected the inefficacy of piezo-resistance among the TMOV like this; also can be to overheated protection of causing because of the output electrode copper sheet on the socket and the inserted sheet malocclusion on the plug, simultaneously when power consumption equipment short circuit appears and cause also can impel TCO self-heating among the TMOV, produce the effect of cutting off electric current than the major break down electric current.On the safety socket module of full protection mutually, be provided with lightning protection function inefficacy indication between power supply output indication and live wire and the zero line.

The full guard safety socket module that the utility model is designed; can be as a base unit; be installed in the socket box on the existing wall; existingly have only the output electrode copper sheet and do not have the simple socket of the simple function of any safeguard protection to substitute; also can be used as the branch streaming socket on the mobile socket row, and the protection of overvoltage, excess temperature, fault current is provided for the electric current output on each road.

Description of drawings

Accompanying drawing 1a is the circuit diagram a of this patent

Accompanying drawing 1b is the circuit diagram b of this patent

Accompanying drawing 2a is the total figure of this assembling a

Accompanying drawing 2b is the total figure of this assembling b

The parts assembling stereogram of accompanying drawing 3a this patent

Accompanying drawing 3b is the parts assembling plan view of this patent

Accompanying drawing 4 is panel front figure and back views of this patent

Accompanying drawing 5 is base wire connecting portion bitmaps of this patent

Accompanying drawing 6 is structure charts of the TMOV that is adopted of this patent

Accompanying drawing 7 is application circuits of the TMOV that adopts of this patent

Embodiment

Further narrate below in conjunction with 1 to 8 pair of embodiment of the present utility model of accompanying drawing, therein, what stated is for preferred embodiment purpose of the present utility model is described, rather than in order to limit above-mentioned purpose.Accompanying drawing 2a is to be that the utility model is as the very little priority scheme of U.S. scale, same mentality of designing and principle can be applied to various types of sockets of each country. in the die cavity of the base in socket (1a), be equipped with live wire output electrode (2), zero line output electrode (3), ground wire output electrode (4); Be provided with between live wire and the zero line to be provided with between over-voltage protection element TMOV (5), live wire and the ground wire between two over-voltage protection element TMOV (6) that connected and discharge tube (8), zero line and the ground wire and be provided with two over-voltage protection element TMOV (7) that connected and discharge tube (8); Then there are the lead-in clamp (15) of live wire, the lead-in clamp (16) of zero line, the lead-in clamp (17) of ground wire in the back of the base in socket (1a); On the panel (1b) of socket, be equipped with live wire and the anti-surge functional indicator light (9) of zero line and the resistance (10) of connecting and diode (11), power supply output indicator (12) and resistance (13) of connecting and the diode (14) of the over-voltage protection element TMOV (6) between live wire and the ground wire; Four sides at base (1a) are equipped with non-return button (23), and are equipped with latch hook (22) at four sides of panel (1b), have been convenient to base and panel and have formed an integral body by self-locking.

In accompanying drawing (1a) and accompanying drawing (1b), it is enforcement circuit diagram of the present utility model, wherein frame of broken lines (15) is expressed as contained piezo-resistance MOV that is connecting (5a) and Thermal Cutoffs TCO (5b) in the above-mentioned TMOV (5), frame of broken lines (16) is expressed as contained piezo-resistance MOV that is connecting (6a) and Thermal Cutoffs TCO (6b) in the above-mentioned TMOV (6), and frame of broken lines (17) is expressed as contained piezo-resistance MOV that is connecting (7a) and Thermal Cutoffs TCO (7b) in the above-mentioned TMOV (7).

Accompanying drawing

6,7 shows that the TCO among the TMOV is close to MOV, and when the heat that was produced when MOV lost efficacy passed to TCO rapidly, the rapid turn-off current of TCO produced disaster hidden-trouble in the back in order to avoid MOV loses efficacy; TCO (6b), (7b) are close to output electrode (2), (3) again respectively in TMOV (6), (7) simultaneously, such design effect is, when electric current is exported because of the output electrode loose contact cause seriously overheated, heat can in time pass to TCO (6b), TCO (7b) so that TCO disconnection by the shell of TCO and the lead-in wire of TCO, in time cuts off electric current output and extinguishes power supply output indicator (12).

As Fig. 3 a, shown in the 3b, live wire is prevented surge functional indicator light (9) and the resistance (10) of connecting with zero line, diode (11) is mounted on the panel, be connected to live wire input (16) on the base by spring (20), another section end is connected to the common port of TMOV (5) by spring (19), form a warning circuit, the heat that was produced when the MOV (5a) among the TMOV (5) lost efficacy causes TCO (5b) to disconnect, thereby extinguish live wire and prevent that with zero line surge functional indicator light (9) power supply output indicator (12) and the resistance (13) of connecting and diode (14) are connected to the common segment of the TMOV (6) on the base by spring (18), another section end is connected to the common port of TMOV (7) by spring (21), form a warning circuit, when TMOV (6), the heat or the output electrode (2) that were produced when (7) losing efficacy, (3) cause the TCO (6b) that heat when overheated can be in time built-in with TMOV (6) because of loose contact, the built-in TCO (7b) of TMOV (7) cuts off, and extinguishes power supply output indicator (12).

Claims

1. supply socket module with overcurrent-overvoltage overheat protector function, in the socket inner chamber of modular, be provided with the output electrode copper sheet of the inserted sheet of 3 energy interlock plugs, to carry out the current delivery of live wire, zero line, ground wire, it is characterized in that between live wire and zero line, having adopted the piezo-resistance TMOV that is provided with alloy-type temperature fuse, carry out overvoltage protection, between live wire and ground wire, zero line and ground wire, adopted TMOV or the discharge tube of connecting again carries out overvoltage protection; Structurally, the output electrode copper sheet of TMOV being close on the socket reaches good heat conduction.

2. a kind of supply socket module according to claim 1 with overcurrent-overvoltage overheat protector function, in it is characterized in that in the die cavity of the base (1a) in socket, be equipped with live wire output electrode (2), zero line output electrode (3), ground wire output electrode (4); Adopt over-voltage protection element TMOV (5) to carry out being provided with between overvoltage protection, live wire and the ground wire between two over-voltage protection element TMOV (6) that connected and discharge tube (8), zero line and the ground wire between live wire and the zero line and be provided with two over-voltage protection element TMOV (7) that connected and discharge tube (8); Then there are the lead-in clamp (15) of live wire, the lead-in clamp (16) of zero line, the lead-in clamp (17) of ground wire in the back of the base in socket (1a); On the panel (1b) of socket, be equipped with the live wire of the over-voltage protection element TMOV (6) between live wire and the ground wire.

3. a kind of supply socket module according to claim 2 with overcurrent-overvoltage overheat protector function; it is characterized in that after piezo-resistance MOV (5a) contained in the described TMOV (5) and Thermal Cutoffs TCO (5b) series connection; be parallel between live wire and the zero line; principal current transfers to live wire output electrode (2) through Thermal Cutoffs TCO (5b), or adopts principal current directly to be transferred to live wire output electrode (2) without Thermal Cutoffs TCO (5b).

4. a kind of supply socket module with overcurrent-overvoltage overheat protector function according to claim 3 is characterized in that being provided with anti-surge functional indicator light (9) and the resistance (10) of connecting and diode (11), power supply output indicator (12) and resistance (13) of connecting and diode (14) on zero line.

5. a kind of supply socket module with overcurrent-overvoltage overheat protector function according to claim 4 is characterized in that being equipped with non-return button (23) at four sides at base (1a), and is equipped with latch hook (22) at four sides of panel (1b).

6. a kind of supply socket module according to claim 5 with overcurrent-overvoltage overheat protector function; it is characterized in that being mounted on the panel at the anti-surge functional indicator light (9) of live wire and zero line and the resistance (10) of connecting, diode (11); be connected to live wire input (16) on the base by spring (20); the other end is connected to the common port of TMOV (5) by spring (19), forms a warning circuit.

7. a kind of supply socket module according to claim 4 with overcurrent-overvoltage overheat protector function; it is characterized in that being connected to by spring (18) common segment of the TMOV (6) on the base at power supply output indicator (12) and the resistance (13) of connecting and diode (14); the other end is connected to the common port of TMOV (7) by spring (21), forms another warning circuit.