CN2152327Y

CN2152327Y - Over-voltage protector

Info

Publication number: CN2152327Y
Application number: CN 93225649
Authority: CN
Inventors: 周谕修
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-30
Filing date: 1993-04-30
Publication date: 1994-01-05
Anticipated expiration: 2003-04-30

Abstract

The utility model relates to an overload protector. The safe voltage of the utility model can be easily regulated through the regulation of a spiral gap by a mode that both ends of an insulating pipe are respectively provided with electrodes (one electrode is fixed directly, and the other electrode is fixed through an electrode base meshed with threads of the electrode) with a convex part, the two electrodes are arranged oppositely, and a gap is reserved between the convex parts of the two electrodes. In addition, the electrode base can be made into a base with two to four opening grooves, the periphery of a corresponding part is provided with a wedge opening groove, and the groove is added with a fastening spring to make the gap further steady. The utility model has the advantages of compact structure, easy manufacture, low cost, small size and low price. The utility model can be used in electric appliances or instruments and equipment which need overload protection.

Description

Over-voltage protector

The utility model belongs to the overvoltage protector that uses in the circuit.

The circuit overvoltage protector mostly adopted the overvoltage crowbar structure in the past, and because of mainly constituting with electronic devices and components, manufacturing cost is higher, and volume is also bigger.

The utility model is desired to address the above problem, and a kind of compact conformation, simple inexpensive again overvoltage protector are provided.

The utility model is achieved in that the high-voltage breakdown principle of utilizing air between electrode, electrode with protuberance is set respectively at the two ends of an insulated tube respectively, allowing the protuberance of two electrodes leave certain interval ground puts relatively, and allow an electrode directly be fixed on an end of insulated tube, become fixed electrode.Another electrode is made the adjustable electrode that has external screw thread and regulate groove, and it is fixed on the insulated tube other end, conduct electricity, tapped electrode base screw-threaded engagement with one.The assembly of above-mentioned formation placed in the insulation crust (this shell both can be a monolithic case, also can be the two parts that entangle the insulated tube two ends respectively).Pass shell with two lead-out wires again, be electrically connected with electrode base and fixed electrode respectively.

Loosening for preventing the engagement between electrode base and the adjustable electrode, can make the tapped end of electrode base and be with 2～4 open slots, and wedge mouth groove is set in this correspondence portion periphery, on this wedge mouth groove, add a fastening spring.

The utility model saves other electronic devices and components owing to adopt the adjustable gaps electrode structure, and as long as by adjustable diameter and screw adjusting gaps between electrodes distance, just can easy adjustment safe voltage.So overvoltage protector as compared with the past, simple in structure compact again, easily make, cost is low.

Fig. 1 is the profile of the utility model one embodiment;

Fig. 2 is that the A of electrode base among Fig. 1 embodiment is to view.

Further introduce the utility model below in conjunction with accompanying drawing for embodiment.

The present embodiment (see figure 1), be the two ends that are about the ceramic material insulated tube (4) of the thick 6.5mm of 10mm at, electrode with the round end protuberance is set respectively respectively, the round end protuberance of two electrodes leaves certain interval ground and puts relatively, one of them electrode directly is fixed on an end of insulated tube (4), become fixed electrode (6), and another electrode is adjustable electrode (2), the one end has external screw thread, other end band is regulated and used groove.This adjustable electrode (2) be fixed on insulated tube (4) other end, tapped metal material electrode base (3) screw-threaded engagement.In this example, insulation crust (1) adopts two parts (1a), (1b) that places insulated tube (4) two ends respectively, and lead-out wire (8), (7) are passed insulation crust (1) and welded with electrode base (3), fixed electrode (6) respectively.For the gap that makes two electrodes is provided with more stablely, this example allows band internal thread one end of electrode base (3) make open slot with 4 (see figure 2) cross arrangements, and establishes wedge mouth groove in this counterpart periphery, puts fastening spring (5) on wedge mouth groove again.After the overvoltage protector of above-mentioned formation is connected on fuse when using, and in parallel with the electrical equipment of required protection.When voltage surpasses safety value (this value is set and depended on clearance distance), then overvoltage protector short circuit.Test factually, therefore the reaction time of present embodiment can prevent effectively that electrical equipment from suffering damage less than 20 nanoseconds.This overvoltage protector is small and exquisite, inexpensive, both can independently make protector usefulness, also can directly be contained in the circuit of electrical equipment.

Claims

1; a kind of overvoltage protector; comprise insulation crust [1]; lead-out wire [7]; [8]; it is characterized in that: it also comprises an insulated tube [4]; the electrode that two each ends have a protuberance (wherein; one for directly being fixed on the fixed electrode [6] of insulated tube [4] one ends; another is the adjustable electrode [2] of band external screw thread and adjusting groove) and a conduction and electrode base that have internal thread [3]; above-mentioned adjustable electrode [2] and electrode base [3] screw-threaded engagement that is fastened on insulated tube [4] other end; and it is relative and put lead-out wire [7] that its protuberance and the protuberance of fixed electrode [6] have certain interval ground; [8] pass shell [1] respectively with fixed electrode [6]; electrode base [3] is electrically connected.

2, device according to claim 1 is characterized in that: band internal thread one end of electrode base (3) is made and is with 2～4 open slots, and in this counterpart periphery wedge mouth groove is set, and adds a fastening spring (5) on this wedge mouth groove.