CN2054938U - Non-friction contact multiple point line switch - Google Patents

Abstract

The utility model discloses a non-friction contact multiple point line switching device which is used to replace a past general-purpose mechanical stepping device or a band switch. The utility model is a switching device that has the advantages of high switching speed, long service life, small volume, and low cost. In the switching process of the utility model, a moving contact automatically rises so that lines are disconnected. The moving contact is switched to a predefined position by a stepping motor. The moving contact falls so that the lines are connected while friction is not generated in the course of operation. Service life is increased by 20-30 times, and the number of switching points can reach more than 200 points. The utility model can be used in various line switching occasions in which the capacity of a contact is not greater than 500 milliamps for communication, electronic lines, automation control, automation instruments, electricity lines, etc.

Description

Non-friction contact multiple point line switch

The utility model is a kind of circuit switching device shifter, it is applicable to that the contact capacity is not more than the switching occasion of 500 milliamperes various circuits, can be widely used in communication, electronic circuit, automation control, instrument and meter for automation and aspect such as electric, be a kind of general circuit switching device shifter.

Present domestic and international various circuit switching device shifters are as mechanical type stepper or band switch, because they are in handoff procedure, contact is easily by abrasion, not only the life-span influenced and responsiveness is also restricted, and shortcomings such as volume is big, switching point is few are arranged, use very undesirable.The switching device shifter that also useful reed switch relay is formed, though it is a lot of that switching point can be done, but, shortcomings such as volume is big, cost is high, complex circuit have also been caused, circuit switching device shifter that neither be desirable because the reed switch relay and the circuit element thereof of this kind switching device shifter increase.Now releasing this utility model circuit switching device shifter and have that switch speed is fast, the life-span is long, volume is little, cost is low, the circuit characteristic of simple, is a kind of desirable circuit switching device shifter.

Method is: by electromagnet contact is lifted in handoff procedure, rotated to by stepping motor and give allocation, contact is put down again and realize that contact does not have the purpose that the friction multiple spot switches.

Be described further below in conjunction with embodiment.

Fig. 1 is the magneticaction that the utility model utilizes electromagnet, contact is lifted under the drive of lever and realize circuit-switched structural map, Fig. 2 is the magneticaction that the utility model utilizes electromagnet, contact is lifted under the drive of cross movement arm and realize circuit-switched structural map, Fig. 3 is the structural map of fixed contact and noseplate, and Fig. 4 is two kinds of tectonic types of moving contact.

Describing the utility model actuating mechanism in detail by Fig. 1 is how to utilize the electromagnet magneticaction, contact is lifted under lever drives and realizes that contact does not have that the friction multipoint circuit switches.This device is by electromagnetic mechanism: coil ［ 1 ］; Actuating mechanism: permanent magnet ［ 2 ］, lever ［ 3 ］, moving contact ［ 4 ］; Fixed mechanism: fixed contact ［ 5 ］, spring ［ 6 ］, noseplate ［ 8 ］, supporting bracket ［ 11 ］; Position-limit mechanism: fulcrum member ［ 9 ］, lever shaft ［ 10 ］ and rotating mechanism: stepping motor ［ 7 ］ constitutes.It is characterized in that: go up in supporting bracket ［ 11 ］ and place coil ［ 1 ］, use bolt between supporting bracket ［ 11 ］ and noseplate ［ 8 ］; Be fixed with fulcrum member ［ 9 ］ on the axle of stepping motor ［ 7 ］, fulcrum member ［ 9 ］ is connected with lever shaft ［ 10 ］ with lever ［ 3 ］, and lever ［ 3 ］ can serve as that axle freely rotates with lever shaft ［ 10 ］ with fulcrum member ［ 9 ］; One size of setting is arranged between fulcrum member ［ 9 ］ and lever shaft ［ 10 ］, lever ［ 3 ］ is moved in desired scope to reach position-limiting action; Be fixed with permanent magnet ［ 2 ］ on the lever ［ 3 ］; Spring ［ 6 ］ has tie-bar bar ［ 3 ］ downward force; Moving contact ［ 4 ］ makes the fixed juncture that gives on the noseplate ［ 8 ］ be connected to reach the switching purpose when contacting with fixed contact ［ 5 ］.Be fixed with stepping motor ［ 7 ］ on the noseplate ［ 8 ］.When circuit switches, coil ［ 1 ］ energising, electromagnetic force acts on permanent magnet ［ 2 ］ simultaneously, moving contact ［ 4 ］ is lifted under lever ［ 3 ］ drives, and stepping motor ［ 7 ］ rotation is switched, after switching is finished, coil ［ 1 ］ outage is borrowed the pulling force of spring ［ 6 ］ that contact is fallen and is connected circuit; Limit function is by fulcrum member ［ 9 ］, and lever shaft ［ 10 ］ is realized; Disconnect a certain circuit and connect the spinning movement realization of giving alignment route stepping motor ［ 7 ］.Fig. 1 represents that the moving contact ［ 4 ］ of this device, fixed contact ［ 5 ］ are in on-state.At first coil ［ 1 ］ is switched on and is produced electromagnetic force when handoff procedure begins, control energising direction makes that top is that N utmost point bottom is the S level, at this moment the N of the permanent magnet ［ 2 ］ that is fixed together with lever ［ 3 ］, the S utmost point interact, the N utmost point of permanent magnet ［ 2 ］ produces upward force (suction), the S utmost point produces downward force (repulsion), this makes every effort to overcome the pulling force of clothes springs ［ 6 ］ and makes lever ［ 3 ］ is the fulcrum rotation with lever shaft ［ 10 ］ along clockwise direction, moving contact ［ 4 ］ is lifted, while moving contact ［ 4 ］, fixed contact ［ 5 ］ are separately; Stepping motor ［ 7 ］ gets signal, and rotates until reaching switching position by required step number and direction, and stepping motor ［ 7 ］ stops; Coil this moment ［ 1 ］ outage, the co-acting force of coil ［ 1 ］ and permanent magnet ［ 2 ］ disappears, and spring ［ 6 ］ makes lever ［ 3 ］ counter rotation, and moving contact ［ 4 ］ contacts with fixed contact ［ 5 ］, so far finishes handoff procedure one time.Fig. 1 device is two cutter multiple spot switching device shifters, and 4 contacts are formed a cutter (one group) lever ［ 3 ］ in twos and made with insulating material.

Describe actuating mechanism of the present utility model in detail by Fig. 2 again, it utilizes the magneticaction of coil ［ 1 ］, moving contact ［ 4 ］ is lifted under the drive of cross movement arm ［ 3 ' ］ and realizes the handoff procedure of circuit.Its actuating mechanism is made of armature ［ 2 ' ］, coil ［ 1 ］, cross movement arm ［ 3 ' ］, moving contact ［ 4 ］, and position-limit mechanism is made of axle head fixture ［ 9 ' ］, pressing plate ［ 10 ' ］, and ［ 11 ］ are supporting bracket.It is characterized in that: on supporting bracket ［ 11 ］, be fixed with coil ［ 1 ］; On the axle of stepping motor ［ 7 ］, be fixed with axle head fixture ［ 9 ' ］, pressing plate ［ 10 ' ］, on axle head fixture ［ 9 ' ］, be with armature ［ 2 ' ］, can only relative sliding up and down between armature ［ 2 ' ］ and the axle head fixture ［ 9 ' ］ and can not relatively rotate; Spring ［ 6 ］ is housed between axle head fixture ［ 9 ' ］ and armature ［ 2 ' ］ makes armature ［ 2 ' ］ that downward force be arranged; Cross movement arm ［ 3 ' ］ is fixed together with armature ［ 2 ' ］, is fixed with moving contact ［ 4 ］ on the cross movement arm ［ 3 ' ］.When circuit switches, coil ［ 1 ］ energising, magneticaction lifts moving contact ［ 4 ］ in armature ［ 2 ' ］ under the drive of cross movement arm ［ 3 ' ］ simultaneously, switch by stepping motor ［ 7 ］ rotation, after switching was finished, coil ［ 1 ］ outage was borrowed the pressure of spring ［ 6 ' ］ that contact is fallen and is connected circuit; Limit function is realized by axle head fixture ［ 9 ' ］ and pressing plate ［ 10 ' ］.

Fig. 3 is the fixed contact ［ 5 ］ among Fig. 1 and Fig. 2 embodiment and the part top view of noseplate ［ 8 ］, and this figure represents 200 changing-over lines, make with the printed on both sides wiring board, from the wiring board bottom to outer lead.［ 12 ］ among Fig. 3 are fixed contact for the changing-over point, and ［ 13 ］ are the changing-over line, and it is equivalent to the cutter of general reversing switch.

Fig. 4 represents the moving contact ［ 4 ］ of two kinds of different types of helical spring silk or spring leaf, and two kinds of contacts all can satisfy the good requirement of each contact contact.［ 14 ］ are the moving contact carrier among Fig. 4, and ［ 15 ］ are spring, and ［ 16 ］ are the moving contact contact.

Claims (1)

1, a kind of contact does not have friction multipoint circuit switching device shifter, it is characterized in that: this device comprises: by the electromagnetic mechanism of coil [1] formation, by permanent magnet [2], lever [3], moving contact [4], spring [6] is (or by armature [2 '], cross movement arm [3 '], moving contact [4], spring [6 ']) actuating mechanism that constitutes such as, by fixed contact [5], the fixed mechanism that noseplate [8] constitutes, by fulcrum member [9], lever shaft [10] (or axle head fixture [9 '], pressing plate [10 ']) position-limit mechanism of Gou Chenging and by the rotating mechanism that stepping motor [7] constitutes is placed with coil [1] on supporting bracket [11]; Fixing fulcrum member [9] on the axle of stepping motor [7], fulcrum member [9] is connected with lever shaft [10] with lever [3]; Or on the axle of stepping motor [7], be fixed with axle head fixture [9 '], pressing plate [10 ']; Axle head fixture [9 '] is fixed together with the axle of pressing plate [10 '] and stepping motor [7]; Lever [3] can serve as that axle freely rotates with lever shaft [10] with fulcrum member [9]; Or on axle head fixture [9 '], being with armature [2 '], armature [2 '] and axle head fixture [9 '] can only relative sliding up and down and can not relatively rotate; Be fixed with permanent magnet [2] on the lever [3]; Spring [6] tie-bar bar [3] is rotated down; Or spring [6] makes armature [2 '] that downward force be arranged; Cross movement arm [3 '] is fixed together with armature [2 ']; Be fixed with moving contact [4] on the cross movement arm [3 '].

Images