CN202796485U

CN202796485U - Contact bridge

Info

Publication number: CN202796485U
Application number: CN 201220157843
Authority: CN
Inventors: 陈小萍; 潘海峰
Original assignee: SHANGHAI ELX INDUSTRY Co Ltd; PUHE SCIENCE AND TECHNOLOGY Co Ltd SHANGHAI
Current assignee: SHANGHAI ELX INDUSTRY Co Ltd; PUHE SCIENCE AND TECHNOLOGY Co Ltd SHANGHAI
Priority date: 2012-04-13
Filing date: 2012-04-13
Publication date: 2013-03-13
Anticipated expiration: 2022-04-13

Abstract

The utility model relates to a contact bridge and especially relates to a contact bridge capable of positioning a helical spring in a contact system of a universal changeover switch. The contact bridge which has the characteristics of simple structure and convenient use ensures the acting force received by silver contacts of the contact bridge to be stable, uniform and effective in the long term and prevents damage resulted from uneven force on the silver contacts. The contact bridge comprises a contact bridge body with a central part and two end parts, two silver contacts embedded in the two ends of the bridge body and a V-shaped boss. The central part can be a recessed part shaped like an inverted rectangle. The two sides of the central part bottom can be zigzag-shaped. The center of the central part bottom is provided with a recessed hole which can be designed into a V shape. The two end parts symmetrically extend outwards. The V-shaped boss and the recessed hole are clamped. Meanwhile, the open end of the V-shaped boss is located inside the helical spring and matches the helical spring.

Description

Contact bridge

Technical field

The utility model relates to a kind of contact bridge, particularly relates to a kind of contact bridge that can position the helical spring in the contact system of Miniature universal change over switch.

Background technology

Universal seclector is a kind of for two-way or the two-way device for switching with power source or load transfer.Change over switch is formed by the more piece contact combinations, and is in electric equipment, multiplex in connecting continually and minute deenergizing plugged and load, the rotating of measurement three-phase voltage and control low capacity asynchronous motor and star delta starting etc.According to the variation of the market demand, to the silver contact on the contact bridge of universal seclector, particularly provide the uniformly and effectively requirement of contact of a long-term stability more and more higher to the silver contact on the contact bridge in the change over switch of nuclear power station.And the universal seclector of prior art can not effectively guarantee not only that all without this structure the silver contact of change over switch has a long-term stability, balanced, effective contact, and causes easily one-sided silver contact damage.

The utility model content

The purpose of this utility model is to provide a kind of can make all silver contacts on the contact bridge be subject to uniformly and effectively contact of a long-term stability, has avoided the silver contact unbalance stress to cause the contact bridge of damage.

In order to realize above purpose, the utility model contact bridge can comprise the contact bridge of a pars intermedia and two ends, two silver contacts that are embedded in body of a bridge two ends, and V-type boss, wherein, pars intermedia can be for falling the position of depression of rectangle, the position, both sides of the bottom of pars intermedia can be zigzag, there is a shrinkage pool at the middle part of the bottom of pars intermedia, shrinkage pool can be designed as V-type, and two ends stretch out symmetrically, and V-type boss and shrinkage pool fasten, an end of the opening of V-type boss is in helical spring inside simultaneously, and is complementary with helical spring.

In addition, in the utility model contact bridge, can scribble link stuff on the body of a bridge around the V-type shrinkage pool, so that whether the body of a bridge does not affect the conductivity of contact bridge, thermal conductivity, thermal diffusivity because of the existence of V-type boss.

Further, in the utility model contact bridge, the position of V-type boss, size depends on helical spring shape and size.

Utility model effect and effect

According to the utility model, zigzag position on the contact bridge is used for this contact bridge is fixed on contact system, the V-type boss is fastened on the V-type shrinkage pool, one end of the opening of V-type boss is in helical spring inside, and match with helical spring, guarantee helical spring stretch and the process of compression in do not depart from the center, thereby make its act on active force on the contact bridge can be steady in a long-term evenly effectively, and guarantee that this active force acts on the center of gravity of contact bridge.Because the body of a bridge of contact bridge be symmetry, the active force that two silver contacts on the contact bridge are subject to also be long-term stability uniformly and effectively.

The utility model contact bridge is simple in structure, and is easy to use, guaranteed that the active force that the silver contact of contact bridge is subject to is steady in a long-term evenly effectively, avoided silver contact stressed and cause damage.

Description of drawings

Fig. 1 is the main TV structure schematic diagram of the utility model contact bridge;

Fig. 2 be Fig. 2 A-A to the sectional structure schematic diagram;

Fig. 3 is the plan structure schematic diagram of the utility model contact bridge;

Fig. 4 is the application schematic diagram of the utility model contact bridge in contact system;

Fig. 5 is the structural representation of the installing hole at the contact supporting rear portion in the contact system;

Fig. 6 structural representation that to be the utility model contact bridge cooperate with contact supporting in the contact system;

Description of reference numerals in the utility model contact bridge accompanying drawing:

1-contact bridge 2-profile of tooth groove 3-contact supporting 4-zigzag position shape

5-contact system 6-pressure coil spring 7-dust cover 8-cam

9-binder 10-shrinkage pool 11-V type boss 12-silver contact

The 13-installing hole 14-body of a bridge

Embodiment

Fig. 1 is the main TV structure schematic diagram of the utility model contact bridge; Fig. 2 be Fig. 1 A-A to the sectional structure schematic diagram; Fig. 3 is the plan structure schematic diagram of the utility model contact bridge.Such as Fig. 1, Fig. 2, shown in Figure 3, the contact bridge that can comprise to the contact bridge 1 that helical spring positions a pars intermedia and two ends in a kind of contact system of Miniature universal change over switch, two silver contacts that are embedded in body of a bridge two ends, and V-type boss, wherein, pars intermedia is for falling the position of depression of rectangle, and the position, both sides of the bottom of pars intermedia is zigzag, there is a shrinkage pool at the middle part of the bottom of pars intermedia, shrinkage pool is designed to V-type, and two ends stretch out symmetrically, and V-type boss and shrinkage pool fasten, an end of the opening of V-type boss is in helical spring inside simultaneously, and is complementary with helical spring.

On the body of a bridge around the shrinkage pool 10, all scribble link stuff 9.

Fig. 4 is the application schematic diagram of the utility model contact bridge in contact system; Fig. 5 is the structural representation of the installing hole at the contact supporting rear portion in the contact system; Fig. 6 structural representation that to be the utility model contact bridge cooperate with contact supporting in the contact system.Such as Fig. 4, Fig. 5, shown in Figure 6, contact bridge is packed in the contact system 5 of universal seclector, the contact supporting 3 in contact bridge 1 and the contact system 5, pressure coil spring 6, dust cover 7 and cam 8 occur interrelated.Installing hole 13 and profile of tooth groove 2 are wherein arranged on the contact supporting.

Installing hole 13 and profile of tooth groove 2 are arranged on the contact supporting, zigzag position 4 and profile of tooth groove 2 are complementary, and contact bridge 1 is installed in the installing hole 13, zigzag position 4 has increased the containment surfaces of contact bridge 1 with contact supporting 3 with the coupling of profile of tooth groove 2, effectively controlled contact bridge 1 in the installing hole 13 of contact supporting 3 swing and rock, improved the stability of contact bridge 1 in whole contact system 5.Obviously, the size at the zigzag position 4 of contact bridge 1 and shape depend on shape and the size of profile of tooth groove 2 on the contact supporting 3.At this moment, one end of the opening of the V-type boss on the contact bridge 1 is in the inside of the pressure coil spring 6 on the dust cover that is fixed in the contact system, and be complementary with pressure coil spring 6, guarantee that pressure coil spring does not depart from its horizontal center in the process that stretches and compress, the position of this V-type boss 11, size, the shape and size that depend on described pressure coil spring 6. at this moment, one end of the opening of the V-type boss on the contact bridge 1 is in the inside of pressure coil spring 6, and be complementary with pressure coil spring 6, guaranteed that pressure coil spring 6 does not depart from its horizontal center in the process that stretches and compress, the position of this V-type boss 11, size depends on the shape and size of described pressure coil spring 6.

When contact system 5 is in running order, cam 8 rotatablely moves, promote simultaneously contact supporting 3, contact supporting 3 drives contact bridges 1 and interacts with pressure coil spring on the dust cover 7 that is fixed in the contact system 5, thereby has realized the connecting and disconnecting of the silver contact 12 on the contact bridge 1.Because an end of the opening of V-type boss 11 is in the inside of pressure coil spring 6, and be complementary with pressure coil spring 6, when having guaranteed that pressure coil spring 6 interacts with contact bridge 1, pressure coil spring 6 does not depart from its horizontal center in the process that stretches and compress, thereby make its act on active force on the contact bridge 1 can be steady in a long-term evenly effectively, and guaranteed that this active force acts on the center of gravity of contact bridge 1.Because the body of a bridge 14 of contact bridge 1 be symmetry, the active force that two silver contacts 14 on the contact bridge 1 are subject to also be long-term stability uniformly and effectively.

When shrinkage pool 10 is subject to larger impulsive force, the V-type boss that is fastened on the shrinkage pool is ejected shrinkage pool 10, and the cross section of contact bridge reduces, and the link stuff 9 that is coated in this moment around the shrinkage pool 10 has guaranteed that contact bridge 1 still has good uniformly conductivity, thermal conductivity, thermal diffusivity.

It is a kind of simple in structure, easy to use that present embodiment provides, and can guarantee that the active force that the silver contact of contact bridge is subject to is steady in a long-term evenly effectively, and avoid simultaneously the silver contact unbalance stress and cause the contact bridge of damage.

Claims

1. contact bridge can position the helical spring in the contact system of universal seclector and realizes steady contact, it is characterized in that, comprising:

Contact bridge with a pars intermedia and two ends,

Two silver contacts that are embedded in described body of a bridge two ends, and

A V-type boss,

Wherein, described pars intermedia is for falling the position of depression of rectangle, the position, both sides of the bottom of described pars intermedia is zigzag, there is a shrinkage pool at the middle part of the described bottom of described pars intermedia, described shrinkage pool is designed to V-type, and described two ends stretch out symmetrically, and described V-type boss and described shrinkage pool fasten, an end of the opening of described V-type boss is in described helical spring inside simultaneously, and is complementary with described helical spring.

2. contact bridge according to claim 1 is characterized in that: wherein, all scribble link stuff on the described body of a bridge around the described shrinkage pool.

3. contact bridge according to claim 1 is characterized in that:

Wherein, the position of described V-type boss, size depends on described helical spring shape and size.