CN2331077Y

CN2331077Y - Switch reverse-in/along-with the direction of magnetic energy

Info

Publication number: CN2331077Y
Application number: CN 98212095
Authority: CN
Inventors: 潘军彪
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-02
Filing date: 1998-04-02
Publication date: 1999-07-28
Anticipated expiration: 2008-04-02

Abstract

The utility model relates to a magnetic energy reversing switch, particularly a switch capable of manually controlling the start, or the operation, or the stop or the revere operation of a three-phase asynchronous motor. A shaft which is connected with a moving contact, a positioning mechanism and a turn knob is fixed in a body case which is composed of a bottom and a cover. Each moving contact is formed by that a magnetic stone is inserted in the center of a bottom cover, or a contact piece seat or a moving contact piece in a seat case, and the magnetic stone is connected with the bottom cover, or the contact piece seat or the moving contact piece into a whole. Each static contact is formed by that a magnetic stone arranged in a cavity which is formed by connecting a phase wire cover plate to a phase wire seat. A positioning mechanism is formed by that a magnetic ring is sheathed outside an iron ring with a gasket, and the magnetic ring is fixed in a cavity which is formed by connecting an axle seat case with the bottom into a whole. The moving contacts, the static contacts and the positioning mechanism all adopt magnetic stones as the closing power of the switch, so the utility model has the advantages of good attracting contact, use safety and reliability, and long service life.

Description

The magnetic energy two-direction switch

The utility model relates to a kind of appliance switch, particularly a kind ofly starts, turns round, stops or the magnetic energy two-direction switch of antiport with the hand control threephase asynchronous.

Existing commercially available two-direction switch, its armature contact all adopts spring structure with the contact that is connected between fixed contact, and spring life is limited, time is just easily caused the contact instability with long back, and bad phenomenon such as generation electric arc, the control position of switch is a cam, and often running is also easy to wear, tends to take place the phenomenon of switch control imbalance.

The patent No. 91223382.6 " a kind of two-direction switch " also provides a kind of two-direction switch that uses spring, cam structure.

The purpose of this utility model is to provide a kind of magnetic energy two-direction switch, and switch performance is good, easy to use, safe, is not easy to produce the phenomenon of electric arc and loose contact, and can improve the useful life of product.

The utility model is achieved in that the magnetic energy two-direction switch is fixed on the end and is covered in the housing of forming by the axle that is connected with moving contact and detent mechanism, knob, and have the phase line seat of static contact terminal block, commutation plate, fixed contact, fixed contact on it with the axle on the corresponding formation of moving contact, and moving contact is by the centre of the bottom in the fixing present shell of magnetite, contact base, movable contact spring, and connect integral body to constitute, fixed contact is connected with the phase line seat by the phase line cover plate, and the formation cavity, in cavity, place magnetite and constitute; Detent mechanism is the iron hoop overcoat magnet ring of knob frame by belt washer, and magnet ring is fixed in the cavity that axle bed shell and the end link into an integrated entity and constitutes.

Fig. 1. structural representation of the present utility model.

Fig. 2. the A-A view of Fig. 1.

Fig. 3. the B-B view of Fig. 1.

Fig. 4. Fig. 1 takes away the C of lid to view.

Fig. 5. the D of Fig. 1 is to view.

Below in conjunction with accompanying drawing embodiment of the present utility model is further described

Magnetite (10), (14), (24), magnet ring (20) all are ferrite lattice

Magnetite (10) embeds the centre of bottom (17) in the present shell (18), (19), contact base (16), movable contact spring (13), and connects the whole moving contact that constitutes, as shown in Figure 2.

Phase line cover plate (5) embeds on phase line seat (15), and forms 3 cavitys, and middle static contact (9) internal cavity is placed with the N utmost point (the S utmost point) magnetite (14), places the S utmost point (the N utmost point) magnetite (24) in the left and right cavity respectively and constitutes fixed contact, as shown in Figure 2.

The iron hoop (21) of belt washer (22) is outer to overlap magnetic bad (20) again, and magnet ring (20) is fixed on formation knob frame in the cavity that links into an integrated entity with screw between axle bed shell (11) and the end (3), shown in figure (4).

One end of axle (2) is fastened on the knob (1), and in addition end pierces in the housing that is linked to be by seam by lid (4), the end (3), on its axle (2) successively, fastening 3 moving contacts and 2 knob framves at interval, and the end of spool (2) is tightened to one with pad, nut.

Phase line seat (15) is inboard directly has spaced 3 to go up the corresponding fixed contact of moving contact with axle (2) on the position.As shown in Figure 1.

With screw static contact terminal block (6) is fixed on phase line seat (15) on phase line seat (15) outer surface and goes up and be screwed at the two ends of cross-coupled commutation plate (7), (8) and the two ends of the commutation plate (12) that straight line is connected, as shown in Figure 3.

Phase line seat (15) is with in the screw of 4 screw on present (3) end.

During use, the position that knob (1) is stopped in the middle of being screwed into is on Fig. 2, the position shown in Figure 5, at this moment the magnetite (10) in seat shell (18), (19) is that the magnetite (14) in the N utmost point (the S utmost point) and the static contact (9) also is the N utmost point (the S utmost point), be to be in the state that the same sex is repelled each other, at this moment movable contact spring (13) disengages with static contact (9), be halted state, motor can not rotate.

On suitable position that knob (1) is turned left, then at this moment magnetite (10) the N utmost point (the S utmost point) on the moving contact is run into magnetite (24) the S utmost point (the N utmost point) on the fixed contact, be to be in the state that there is a natural attraction between the sexes, simultaneously movable contact spring (13) is inhaled downwards and run into static contact (23), energized is forward rotated motor.

On the contrary, on the position that knob (1) is turned right down, motor does not describe in detail with regard to reverse rotation,

The utility model is compared with prior art: do because the dynamic and static contact in this two-direction switch all adopts magnetite Be the power of switch closure, thus adhesive flexibly, contact, be not easy to take place arc phenomenon, use safe, Reliably. And 2 knob framves also adopt magnet ring structure, and N, S on it are pulled together extremely forever, make knob Rotation reliable, the phenomenon of switch control imbalance can not take place, and service life is than general switch long 4～5 Doubly.

Claims

1. magnetic energy two-direction switch, by being connected with moving contact and detent mechanism, the axle (2) of knob (1) is fixed at the end (3) and covers in the housing of (4) forming, and have static contact terminal block (6), commutation plate (7), (8), (12), the phase line seat (15) of fixed contact, fixed contact on it and the moving contact corresponding formation of axle on (2), it is characterized in that moving contact is by the fixing present shell (18) of magnetite (10), (19) Nei bottom (17), contact base (16), the centre of movable contact spring (13), and connect integral body to constitute, fixed contact is connected with phase line seat (15) by phase line cover plate (5), and the formation cavity, in cavity, place magnetite (14), (24) constitute; Detent mechanism is the knob frame by the outer magnet ring (20) that connects again of the iron hoop (21) of belt washer (22), and magnet ring (20) is fixed in the cavity that axle bed shell (11) and the end (3) link into an integrated entity and constitutes.

2. switch according to claim 1, it is characterized in that fixed contact is embedded on phase line seat (15) by phase line cover plate (5), and forming 3 cavitys, middle static contact (9) internal cavity is placed with the N utmost point (the S utmost point) magnetite (14), places the S utmost point (the N utmost point) magnetite (24) in the left and right cavity respectively.

3. switch according to claim 1, an end that it is characterized in that axle (2) is fastened on the knob (1), in addition end pierces in the housing that is linked to be by seam by lid (4), the end (3), on its axle (2) successively, at interval, fastening 3 moving contacts and 2 knob framves, the end of axle (2) is tightened to one with pad, nut, phase line seat (15) is inboard directly on the position, have spaced 3 with the last corresponding fixed contact of moving contact of axle (2).