CN203445014U

CN203445014U - Automatic change-over switch

Info

Publication number: CN203445014U
Application number: CN201320598917.7U
Authority: CN
Inventors: 李长营; 江美纯; 龚柱
Original assignee: XIAMEN LRONGXK ELECTRICAL Co Ltd
Current assignee: XIAMEN LRONGXK ELECTRICAL Co Ltd
Priority date: 2013-09-27
Filing date: 2013-09-27
Publication date: 2014-02-19
Anticipated expiration: 2023-09-27

Abstract

The utility model discloses an automatic change-over switch. The automatic change-over switch comprises an insulating shell, and two movable contact contacting systems, two spring operating mechanisms and a transmission mechanism of an operating force are arranged inside the insulating shell. Each movable contact contacting system comprises an insulating sliding beam and four movable contact groups. In addition, the insulating shell is also equipped with four electrical loops, and each electrical loop comprises two power supply input terminals, a load output terminal and four fixed contacts. The two movable contact contacting systems realize the switching of the connection and disconnection of the two power supply input ends and the load output end in each electrical loop under the driving of the acting forces of the two spring operating mechanisms separately. The automatic change-over switch disclosed by the utility model is high in short-circuit performance and good in isolation performance, and is convenient to operate and install.

Description

Automatic change-over

Technical field

The utility model relates to a kind of electric switch equipment, relates in particular to a kind of automatic change-over.

Background technology

Automatic change-over is mainly used in emergency power supply system, load circuit is transformed into another power supply automatically from a power supply, to guarantee the operation reliably continuously of main load, therefore, automatic change-over is usually used among important circuit, and the electric reliability of its product is particularly important.

At present, automatic change-over conventional on market roughly has two classes, is respectively CB level class PC level class; As the moving contact from automatic change-over and fixed contact contact form, automatic change-over can be divided into two kinds: a kind of is contact clapper-type, another kind is contact clamp connected, due to two kinds of contact form structures differences, also corresponding pluses and minuses that exist separately.Clapper-type contact, when circuit is short-circuited electric current, can produce electric power between dynamic/static contact, causes contact vibration, thereby causes contact to damage or melting welding; And the automatic change-over of contact clamp connected is when circuit is short-circuited electric current, the electric power producing between dynamic/static contact not only can not cause contact vibration, can compensate on the contrary the power of stepping up of dynamic/static contact, makes contact work operation more reliable.Two power supply fixed contacts and a load moving contact of the PC level automatic change-over of contact clapper-type are arranged in a housing, make product with compact structure, volume little, and the PC level automatic change-over of contact clamp connected has adopted two isolating switch stacks to make, cause dynamic/static contact number in an electric loop to double, volume is large, inconvenience is installed, and therefore, above-mentioned two kinds of automatic change-overs are not all perfect and desirable product in existing market.

Summary of the invention

For this reason, the utility model object is to solve low, the bulky technical problem of existing market product electric short circuit performance, proposes that a kind of short-circuit capability is high, compact conformation, volume PC level automatic change-over little, easy to install.

In order to achieve the above object, target of the present utility model is to provide a kind of PC level automatic change-over, and the short-circuit capability of this automatic change-over should be able to reach the highest in the market technical standard, and the contact form of its change over switch should be clamp connected.

In order to achieve the above object, target of the present utility model is to provide a kind of PC level automatic change-over, and this automatic change-over zero-bit state should have reliably two separation structures and should have reliable isolation features.

In order to achieve the above object, another target of the present utility model is to provide a kind of PC level automatic change-over, and this automatic change-over structure should be compact, volume is little, easy to install.

By PC level automatic change-over hereinafter, above-mentioned object, it is more obvious that target all will become, this automatic change-over comprises insulation shell, two moving contact contact systems are installed in insulation shell, the transmission mechanism of two spring operating mechanisms and a peripheral operation power, described two moving contact contact systems are respectively under the driving of two spring operating mechanism active forces, in electric loop, realize respectively the translation function that loads on two power ends and a zero-bit end, in transfer process, two moving contact contact systems are independent separately, be independent of each other, reach the two requirements that divide reliable and isolation features of zero-bit end.Described transmission mechanism is by the requirement according to PC level three position automatic change-overs to the operating physical force of automatic change-over, pass to respectively two described spring operating mechanisms, and the spring that makes spring operating mechanism carries out storing energy and releasing energy, in its process, will drive moving contact contact system to come and go in insulation shell mobile.

Accompanying drawing explanation

Fig. 1 is that existing market upper contact head is the structural perspective of the PC level automatic change-over of clapper-type;

Fig. 2 is that existing market upper contact head is the structural perspective of the PC level automatic change-over of clamp connected;

Fig. 3 is the structure chart of the utility model moving contact contact system;

Fig. 4 is the structural perspective of the utility model PC level automatic change-over;

Fig. 5 is the sectional block diagram of the utility model PC level automatic change-over;

Fig. 6 is the structural perspective of the utility model spring operating mechanism;

In figure, Reference numeral is expressed as:

1-insulation shell, the sliding beam of 2-, 3-main shaft, 4-moving contact, 5-fixed contact, 6-circular shaft, 7-spring, 8-input terminal, 9-lead-out terminal, 10-circle wheel, 11-gear, 12-square shaft, 13-swivel mount, 14-arc control device, 15-spring base, 16-pull bar.

Embodiment

With reference to accompanying drawing 3, accompanying drawing 5, from the structural perspective of PC level automatic change-over and cutaway view, can see that insulation shell 1 inside is provided with two identical moving contact contact systems, the transmission mechanism of two identical spring operating mechanisms and a peripheral operation power, in addition, four electric loops are also installed on insulation shell 1, in each electric loop, all there are two power input terminals 8 and load lead-out terminal 9 and four fixed contacts 5 and four arc control device 14, described moving contact contact system is connected and becomes an interlock body through the oblong aperture of sliding beam 2 in moving contact contact system by the circular shaft 6 in spring operating mechanism with described spring operating mechanism, the gear 11 of transmission mechanism is installed on the square shaft 12 of spring operating mechanism and takes turns 10 main shafts 3 by the circle of transmission mechanism and be connected, therefore, peripheral operation power can be passed to the square shaft 12 of spring operating mechanism and be made the spring 7 of 13 pairs of spring operating mechanisms of its swivel mount compress storing energy by transmission mechanism, after mechanism compressed dead point, spring 7 is released energy, thereby drive moving contact contact system according to the direction of rotation of peripheral operation power, to make back and forth movement in insulation shell 1, realize connection and the disjunction of moving contact 4 and two power input terminals 8 and load lead-out terminal 9 in electric loop.

Insulation shell 1 is provided with a plurality of electric Cang Heyige mechanisms storehouse, fixed contact 5 in described four electric loops and arc control device 14 are arranged on respectively in a plurality of electric storehouses, described spring operating mechanism and transmission mechanism are installed in mechanism storehouse, and two square shafts 12 and a main shaft 3 are arranged in straight line, and main shaft 3 is in the centre of two square shafts 12.

With reference to accompanying drawing 4, accompanying drawing 5, moving contact contact system is comprised of sliding beam 2 and moving contact 4, wherein, on sliding beam 2, be provided with four irregularly-shaped holes and an oblong aperture, four special-shaped hole sites are in the side of sliding beam 2 center lines, be arranged in straight line, pitch-row equates, oblong aperture is positioned on the center line of sliding beam 2 one end, the direction in described five holes is identical, in addition, moving contact 4 is by four columniform copper rods and a spring, two pressing plates and a plurality of supporter form, moving contact 4 is embedded in four irregularly-shaped holes of sliding beam 2 by riveting process, moving contact contact system is in insulation shell 1 during back and forth movement, the moving contact 4 of inlaying in 2 four irregularly-shaped holes of described sliding beam can interconnect or separate with the fixed contact 5 being arranged on insulation shell 1, and four cylindrical copper rods in moving contact 4 are under the effect of spring pressure, can produce one and to the clamping force of fixed contact 5 and between moving contact 4 and fixed contact 5, form four contacts wire, realize the connection of electric loop and the clamp connected of automatic change-over contact.

With reference to accompanying drawing 6, accompanying drawing 5, spring operating mechanism is by square shaft 12, spring 7, spring base 15, swivel mount 13, pull bar 16, circular shaft 6 form, swivel mount 13 is installed on square shaft 12 by straight pin, pull bar is installed on spring base 15 by straight pin, and both connect into described spring operating mechanism by circular shaft 6 and spring 7.

Claims

1. an automatic change-over, comprise insulation shell, sliding beam, moving contact group, fixed contact, binding post, arc control device, spring operating mechanism, transmission mechanism, it is characterized in that: insulation shell, the inside of described insulation shell is provided with two moving contact contact systems, two spring operating mechanisms and a transmission mechanism; Four electric loops are also installed on described insulation shell, in each electric loop, all have two power input terminals and a load lead-out terminal.

2. a kind of automatic change-over according to claim 1, is characterized in that: described moving contact contact system is comprised of a sliding beam and four moving contact groups, and these four moving contact groups are arranged on sliding beam, and are all arranged on a side of sliding beam Operation Centre line.

3. a kind of automatic change-over according to claim 1, is characterized in that: the circular shaft of described spring operating mechanism, through the oblong aperture of sliding beam one end in described moving contact contact system, is connected into one by spring operating mechanism and moving contact contact system.

4. a kind of automatic change-over according to claim 1, is characterized in that: described transmission mechanism is arranged in the middle of two spring operating mechanisms, and two gears of transmission mechanism are arranged on respectively on the square shaft of two spring operating mechanisms.