CN2146055Y

CN2146055Y - Universal-purpose reset switch

Info

Publication number: CN2146055Y
Application number: CN 93202272
Authority: CN
Inventors: 黄程; 黄培植
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-20
Filing date: 1993-01-20
Publication date: 1993-11-10
Anticipated expiration: 2003-01-20

Abstract

The utility model relates to a universal transfer switch, which is composed of a square shaft, a switch knob, a cam, a limit wheel, a cover, a movable contact head and a static contact head; the movable contact head and the static contact head are arranged on the base of the switch. The movable contact head is fixed on a movable contact bridge, the movable contact bridge is arranged on the arced support point of an operation rack and is arranged in a movable contact rack; the operation rack moves up and down in the movable contact rack by using a movable contact seat as the support point; the movable contact bridge is provided with the spring of a contact head, and the movable contact rack is provided with a return spring. Because a contact head system of the utility model adopts the lever drive and single-break structure, the utility model has the initial pressure and the final pressure, and obtains enough opening distance, the over travel and the lapping distance. The universal transfer switch has the advantages of large capacity of the contact head and good vibration-proof performance, strong breaking capacity; the reliability of the work can be improved. The universal transfer switch can be exchanged with an LW5-15 type universal transfer switch, and the universal transfer switch is universal with the LW5-15 type universal transfer switch.

Description

Universal-purpose reset switch

The utility model belongs to the low-voltage electrical apparatus switch, and being specifically related to a kind of machine driving has the contact universal seclector.

At present, in the control circuit of right in homemade, electric locomotive, be extensive use of LW5-15 type universal seclector, as the switch of illumination, power supply, Fault Isolation etc.This switch is double break point, face contact, Direct Action Type contact, contact is contained on the switch base, the center of switch base is equipped with one can reverse moving square shaft by pulling, be with cam on the square shaft, the rotation of square shaft can drive cam rotation, the compression spring of compression or release action contact frame makes the closed or disconnection of moving contact and fixed contact.Switch base and contact gland, pawl seat, position-limited wheel, table lid etc. connect into the universal seclector of an integral body.Problem was little when above-mentioned switch used on general electrical control equipment, but in violent dynamic environment as traction locomotive in use just shown its many defectives, because contact is double break point, face contact, Direct Action Type, thereby traverse does not have amplification, a compression spring is only arranged on action contact frame, contact pressure is little, contact wire is unreliable, there are not initial pressure, the excess of stroke and grinding distance after the contact closure, therefore freedom from vibration is poor, the oxide-film of contact surface can not be removed, under the vibration situation, and the easy scaling loss of contact.In addition, under adverse circumstances such as judder, wiring is loosening easily, constitutes the unsafe factor of train.

The purpose of this utility model is the defective that overcomes above-mentioned switch, provides that a kind of to have a freedom from vibration good, and the contact capacity is big, the universal seclector that functional reliability is high.

Universal seclector of the present utility model by square shaft, pull turn round, cam, position-limited wheel, table lid and the dynamic and static contact that is installed on the switch base constitute, it is characterized in that said moving contact is fixed on the movable contact bridge, the movable contact bridge places on the arc fulcrum of action frame and places in the action contact frame, action frame is that fulcrum is up and down in action contact frame with the moving contact seat, the movable contact bridge is equipped with a touch spring, and action contact frame is equipped with a return spring.

The movable contact bridge is made of metal tube, and soft line is compressed in the metal tube, and pressure ring is inserted by the moving contact bolt in the other end.

Dynamic/static contact adopts the steel silver lamination composite contact that periphery is rectangular, outer surface is circular arc, and the contact of dynamic/static contact is the line contact.

General universal seclector of the present utility model is compared with original LW5-15 universal seclector, because contact system has adopted lever transmission, single-break structure, thereby had initial pressure, an end pressure, and enough distances of opening have been obtained, the excess of stroke and grinding distance, the contact capacity is big, and vibration-resistant property is good, breaking capacity is strong, and functional reliability improves.The movable contact bridge adopts metal tube and soft line single cavity die structure, the mechanical strength height, and contact resistance is little.Installation dimension of the present utility model is identical in LW5-15 type universal seclector, and new old product can reach exchange, general fully.

Below by accompanying drawing embodiment of the present utility model is elaborated.

Fig. 1 is according to the general universal seclector structural representation that the utility model proposes.

Fig. 2 is the A-A line profile of Fig. 1.

1 is transparent table lid among the figure, the 2nd, and pawl seat, the 3rd, position-limited wheel, the 4th, the switch base of installation dynamic/static contact, the 5th, bearing pedestal, the 6th, factory's nameplate, the 7th, bolt, the 8th, bearing, the 9th, contact gland, the 10th, banking stop, the 11st, spacer pin, the 12nd, sign nameplate, the 13rd, ring washer, the 14th, square shaft, the 15th, switch knob, the 16th, screw, the 17th, touch spring, the 18th, return spring, the 19th, action contact frame, the 20th, movable contact bridge, the 21st, action frame, the 22nd, moving contact bolt, the 23rd, soft line, the 24th, pressure ring, the 25th, moving contact seat, the 26th, cam, the 27th, fixed contact bolt, the 28th, fixed contact, the 29th, spring base.As shown in Figure 1, general structure of the present utility model and installation and LW5-15 universal seclector are basic identical, and its improvements are the dynamic/static contact installed on the switch base 4.As shown in Figure 2, fixed contact bolt 27 is housed on the switch base 4, moving contact bolt 22, fixed contact 28 is installed on the switch base 4.A moving contact seat 25 is installed on the switch base, action frame 21 is that fulcrum moves up and down in action contact frame 19 with moving contact seat 25, the arc fulcrum that protrusion is arranged on the action frame, place movable contact bridge 20 on the fulcrum, movable contact bridge 20 all places in the action contact frame 19 with action frame 21, a return spring 18 is arranged on the action contact frame, a touch spring 17 is arranged on the movable contact bridge 20, touch spring is fixing with spring base 29.Movable contact bridge 20 usefulness metal tubes are made, and an end of soft line 23 is suppressed in it, and another termination pressure ring 24 is fixing by moving contact bolt 22.Dynamic/static contact is the steel silver lamination composite contact that periphery is rectangular, outer surface is circular arc, and the contact of contact is the line contact.Above-mentioned parts after arranging on the switch base 4, are pressed contact gland 9, put into bearing 8, build bearing pedestal 5, behind factory's nameplate 6, fix with nut.Table covers 1 can be made of transparent material, and the hold-down screw 16 on the switch knob 15 can directly be connected with square shaft 14, and switch knob can not be come off.When pulling switch knob and make square shaft 14 be rotated one 45 to spend, be contained in cam 26 compression on the square shaft or discharge return spring 18 on the action contact frame 19, action contact frame 19 actions, the action of action contact frame 19 will be directed at action frame 21 and movable contact bridge 20 is done clockwise or rotated counterclockwise, touch spring 17 is released or compresses, and makes the closed or disconnection of dynamic/static contact.

Technical parameter of the present utility model is: clearance between open contacts 〉=4mm, contact over travel 〉=2mm, contact initial pressure 〉=1N, contact terminate pressure 〉=2N, contact agreement heating current 15A, contact rated voltage 500V, nominal operation frequency 120 times/hour, electric life 200,000 times, mechanical endurance 1,000,000 times.

According to structure of contact terminal of the present utility model, can also be by changing the square shaft length and the contact number of plies, make individual layer, bilayer, three layers, four layers 0-7 control position, the serial universal seclector of the non-runback of different contact closure tables or self-resetting type.

Claims

1, a kind of universal seclector, by square shaft 14, pull turn round 15, cam 26, position-limited wheel 3, table cover 1 and the dynamic and static contact that is installed on the switch base 4 constitute, it is characterized in that said moving contact is fixed on the movable contact bridge 20, the movable contact bridge places on the arc fulcrum of action frame 21 and places in the action contact frame 19, action frame is that fulcrum is up and down in action contact frame with moving contact seat 25, the movable contact bridge is equipped with a touch spring 17, and action contact frame is equipped with a return spring 18.

2, universal seclector as claimed in claim 1 is characterized in that said movable contact bridge makes of metal tube, and soft line 23 is compressed in the metal tube, and it is fixing by moving contact bolt 22 that pressure ring 24 is inserted in the other end.

3, as claim 1 and 2 described universal seclectors, it is characterized in that said dynamic/static contact adopts the steel silver lamination composite contact that periphery is rectangular, outer surface is circular arc, the contact of dynamic/static contact is the line contact.