CN1967763B

CN1967763B - Electrical switching device

Info

Publication number: CN1967763B
Application number: CN2006101424590A
Authority: CN
Inventors: G·斯纳特兰德; P·B·安德里森; J·K·塞姆布
Original assignee: ABB Patent GmbH
Current assignee: ABB Patent GmbH
Priority date: 2005-10-26
Filing date: 2006-10-25
Publication date: 2011-12-28
Anticipated expiration: 2026-10-25
Also published as: DE102006011982A1; DE102006011982B4; GB2431775A; HK1106868A1; CN1967763A; GB2431775B; GB0620737D0

Abstract

The invention relates to an electrical switching device having a drive (10) and a contact carrier (11), which is coupled thereto, for at least one movable contact piece (12), which is contacted with the carrier (11) is coupled to the manually operated or motor-driven drive (10), the drive being provided with a spring device (40), which can be changed over from a first stable position to a second stable position, a drive plate (18) for the contact carrier (11) being coupled to said spring device. In addition, a spring arrangement (20) is provided which is fixed in a ready-to-trip position and drives the spring device out of the switch-on position into the switch-off position, the spring arrangement (20) interacting with a latching point (31, 32), which can be unlatched by means of an electromagnetic release (38) such that, after the unlatching, the spring arrangement (20) is released and actuates the drive (10) with the spring device (40) in the direction of the switch-off position.

Description

Electrical switchgear

Technical field

The present invention relates to a kind of electrical switchgear.

Background technology

This switching device has a contact holder, settles the moving contact that touches the bridge form thereon, and they and fixed contact concur.Described contact holder this manually or motor ground drive by drive unit, this drive unit has spring assembly, it can be manually or motor-driven from the first stable stable open position of on-position conversion and control to the second.

Summary of the invention

The objective of the invention is, improve the electrical switchgear of above-mentioned form like this, make and to discharge this switching device in remote control ground.

For this reason, the invention provides a kind of electrical switchgear, have a drive unit and a contact holder that is used at least one armature contact that joins with its coupling, this contact holder joins with the drive unit coupling of manual or motorized motions, wherein this drive unit is furnished with a spring assembly, it can be transformed into the second stable open position from the first stable on-position, driving plate and this spring assembly coupling connection that is used for contact holder, it is characterized in that, additionally has an elastic construction, it is fixed on the position that prepare to discharge and it makes spring assembly be driven into open position from on-position, wherein this elastic construction and a sealed position concur, it is sealed that the releasing of electromagnetism release can be passed through in this sealed position, thus at releasing sealed back this elastic construction of release and by spring assembly accessory drive on the direction of release open position.

Additionally has an elastic construction according to the present invention, it is fixed on the position that prepare to discharge and it makes spring assembly be driven into open position from on-position, wherein this elastic construction and a sealed position concur, this sealed position can be removed sealed by the electromagnetism release, thus remove that sealed back discharges this elastic construction and by the direction of spring assembly at open position on accessory drive.

Provide other favourable expansion structure and improvement project by dependent claims.

Description of drawings

Describe the present invention, other favourable expansion structure and improvement project and other advantage of the present invention in detail by means of the accompanying drawing that the embodiment of the invention is shown below.

Fig. 1 illustrates the drive unit of electrical switchgear at the on-position of preparing to discharge,

Fig. 2 and 3 illustrates the diverse location according to the drive unit of Fig. 1,

Fig. 4 illustrates the cross-sectional view of release pin.

Embodiment

This position of a switching device 100 only is shown, and a drive unit 10 is positioned at this position, and this switching device has a contact holder 11, settles thereon and touches bridge 12, and they and unshowned fixed contact spare concur.Only illustrating is laid in touches bridge 12 near the drive unit.

By drive unit 10 contact-actuating supports 11, the quantity of phase place is corresponding to the quantity of touching bridge 12 thereon.Accompanying drawing only illustrates one and touches bridge; Save remaining and touch bridge, save the fixed contact spare of subordinate too.The long bridge 11 that touches that constitutes to extension is guided in the guide way 13 in fixed-site point-blank, so contact holder 11 can only move on double-head arrow direction P.

Described contact holder 11, be also referred to as the direction of motion P that touches bridge bracket 11 and extend (seeing for details following) perpendicular to the motion of drive link 37.

Described drive unit is fixed between the support plate 14 (being called for short plate 14) of switching device 100 with being arranged in two fixed-site, a plate wherein only is shown, and saves the plate on another top.Between these plates 14 on a public rotating shaft 15 rotatably mounted one first drive guiding plate 16, one second drive or guiding plate 17 and one the 3rd drive or guiding plate 18 (below also with first, second and the

3rd plate

16,16,18 abbreviate plate 16 as, 17,18).Also have two plates here respectively:

Two first plates 16, two second plates 17 and two the 3rd plates 18, they interconnect in the mode that is not shown specifically, and wherein first plate occupies between first plate second plate in second plate, 17 outsides and therefore; The 3rd plate 18 is between two second plates 17.

Only refer to a plate below; Two plates but the while indication is mutually related.

An end 19 of hinged elastic construction 20 on first plate 16, this elastic construction have two telescopic interactional and

spring shell parts

21 and 22 that move in opposite directions; A retracting spring 23 that is made of helical compression spring is positioned at

case member

21 and 22 inside.Shown in position retracting spring 23 be compressed.

Described case member 22 hingedly is connected with second plate 17 by rotating shaft 24 by its other end 19a (see figure 3).This case member 22 has a step 25 at the other end 19a place, this step of plush copper 26 roof pressures of pawl bar 27 on position shown in the drawings, and this pawl bar 27 takes the shape of the letter U and has two side leg 27a, wherein can only see upside leg 27a.Two side leg 27a interconnect by a bridgeware 28 that extends perpendicular to drawing.This pawl bar 27 can be rotated to support on the axle 29, and this axle is fixed on first plate 16.A trip lever 30 concurs with this pawl bar 27, and this trip lever has the shape of U-shaped equally and only can see a side leg.This trip lever 30 has one and plush copper 26 reverse opposed release plush coppers 31, and it leans on the backstop 32 of fulcrum post 33 (see figure 4)s, and this fulcrum post 33 is bearing on this plate around its axle 34 perpendicular to first plate 16.Have an elastic construction (not shown) between two

levers

27 and 30, it makes the bridgeware 28 adjacent seamed edge 35 of roof pressure trip lever 30 enduringly.A radial protrusion 36 is positioned on the release pin 33, this projection and the drive rod 37 couplings connection that can on direction of arrow P1, move, and wherein this drive rod is moved on direction of arrow P2 by electromagnetism release 38, and this point also will be described in detail below.Described backstop 32 is configured for the supporting step of trip lever 30 by a step (see figure 4) of substantially radially extending.The central axis of the described elastic construction 20 in (connections) position that discharges in the preparation shown in Fig. 1 becomes the extension of ground, obtuse angle with the length of contact holder 11, this angle is unlimited towards pawl bar and trip lever 27,30.The connecting line of described bearing position 25/26 and bearing position 31/32 is between the jointed shaft 24 and the axle 15 near jointed shaft 24 of case member 22, by the extension of jointed shaft 24 next doors.

On elastic device 40 is hinged on axle 15 on second plate 17, relative and the elastic construction 20 opposed sides, it comprises two stage clips that extend in parallel 41 and 42, and they are hingedly settled and be fixed on second plate 17 by bearing pin 43 and 44.Two

springs

41 and 42 the other end are settled or are bearing on two arm 44a and 45 of double armed lever 46, and this double armed lever is bearing on the axle 47, and this axle and the 3rd plate 18 are hinged, and spools 47 of threading spare 17 is moved.This plate 17 has the slotted hole 48 of an arc, and its center of arc's point is that the central point and the quilt axle 47 of rotating shaft 15 passes.This axle 47 is near axle 15, and bearing

43 and 44 with respect to axle 15 be positioned at axle 47 opposed sides on.Described axle 47 is between

stage clip

41 and 42.

Second plate 17 with respect to axle 15 with spring assembly 40 opposed sides on have a plush copper shape extension body 53, be also referred to as projection 53, its function continues to describe below.

The 3rd plate 18 has cam space 49, guides bearing pin 50 therein, this bearing pin with touch bridge bracket 11 and fixedly connected.

Be hinged with backstop 51 by axle 52 on support plate 14, this backstop has two side legs, and they make two the 3rd plates 18 occupy betwixt and be arranged in the plane of second plate 17.Two side legs connect by galianconism 56.It is outside and be positioned on the side of contact holder 11 length this side and bearing position 25/26 at the range of movement of contact holder 11 that described axle 54 is arranged in the 3rd plate 18; 31/32 is opposed.Described backstop 51 is basically perpendicular to the length of contact holder 11 and extends.Plush copper shape extension body 53 on the builder cam seamed edge 57 in the face of the side leg of the backstop 51 of elastic construction 20, it and plate 17 concurs.Described bearing pin 50 is connected with the side leg of backstop 51 and wears space 49 thoroughly.

Described device can manually come out from deflection in the position shown in the figure 1 by handle or by motor (not shown handle or motor) easily at the state that does not discharge, so described elastic device 40 can be from placing second settling position at first settling position shown in Figure 1 by a dead-centre position; This point is inessential and also be known for estimating the present invention.

Discharge if will realize now, then an electric pulse is given on the electromagnet 38 (be also referred to as and disconnect relay 38), it moves down acting on drive rod 37 on the direction of arrow P2 and make this drive rod leave contact holder perpendicular to the direction of motion of contact holder 11 on direction of arrow P1, makes the ratchet bearing pin or discharges bearing pin 33 clockwise deflections by projection 36 thus.Therefore discharge plush copper 31 thus, plush copper 31 can be skidded off from step 32, not only make trip lever 30 thus but also make pawl bar 27 turn clockwise and discharge case member 22 and can make retracting spring 23 unloadings around rotating shaft 29.Make second plate 17 center on its rotating shaft 15 deflections and make spring assembly 40 thus by

pin joint

43,44 deflections together, make that the line of force of spring structure 40 surpasses the dead point line that passes axle 15 extensions when this deflection, feasible axle 47 is driven by spring assembly and makes the 3rd plate 18 deflection in the counterclockwise direction in this way, opens contact position thus.First plate 16 (with relevant handle or motor) does not move: switching device is positioned at the off-position; Handle and motor remain on on-position.Shown in plush copper shape projection 53 on the cam seamed edge 57 of for example V-arrangement, slide and arrive the bottom of V-arrangement shape, make backstop 51 be stuck in the back of the plush copper 54 that is formed on the plate 17 thus, and only lock contact holder in this way by galianconism 56.Remain on connection and off-state that therefore do not discharge at this backstop by the seamed edge 55 of plate 17.Cam seamed edge 57 shown here is positioned on backstop 51 1 sides opposite with contact holder 11 at galianconism 56 places.

Realize thus connecting again, be the tensioning of spring structure 20, first plate 16 centers on axle 15 deflections clockwise by motor or the handle that is not shown specifically after disconnection, and spring structure 20 is deflected into again at the settling position shown in Fig. 1.Simultaneously also make 18 deflections of the 3rd plate thus and make and touch bridge and place on-position.Described backstop 51 is only locked the 3rd plate 18 and is responsible for making spring structure 20 tensioning again, and contact holder 11 is moved.When spring structure 20 tensionings, second plate 17 also is positioned at it according to settling position shown in Figure 1.Described backstop 51 is shifted open position onto by the seamed edge 55 of plate 17 and is remained there.

Can realize the normal motion of connecting by handle or motor, wherein the 3rd plate deflection and make and touch bridge and place on-position.

Claims

1. electrical switchgear, have a drive unit (10) and a contact holder that is used at least one armature contact (12) (11) that joins with its coupling, this contact holder (11) joins with drive unit (10) coupling of manual or motorized motions, wherein this drive unit is furnished with a spring assembly (40), it can be transformed into the second stable open position from the first stable on-position, a driving plate (18) and this spring assembly (40) coupling connection that is used for contact holder (11), it is characterized in that, additionally has an elastic construction (20), this elastic construction (20) is fixed on the position of preparing to discharge and makes spring assembly be driven into open position from on-position, wherein this elastic construction (20) and a sealed position (31,32) concur, this sealed position can be sealed by electromagnetism release (38) releasing, thus at releasing sealed back release this elastic construction (20) and by spring assembly (40) accessory drive (10) on the direction of release open position.

2. switching device as claimed in claim 1, it is characterized in that, described elastic construction (20) is received in first case member (21) and second case member (22), the guiding mutually of the telescopic ground of described first case member (21) and described second case member (22).

3. switching device as claimed in claim 2, it is characterized in that, described first case member (21) can be rotated to support at least one first guiding plate (16), pawl bar (27,30) can be rotated to support on the described first guiding plate (16), this pawl bar makes described elastic construction (20) keep roof pressure and itself concurs with pawl component (33) again, and described pawl bar and pawl component constitute described sealed position.

4. as claim 2 or 3 described switching devices, it is characterized in that described second case member (22) is hinged at least one second guiding plate (17), an end of described spring assembly (40) rotatably is connected with the described second guiding plate.

5. as each described switching device in the above-mentioned claim 2 or 3, it is characterized in that described first case member (21) and described second case member (22) comprise a helical compression spring (23) and guiding mutually.

6. as each described switching device in the above-mentioned claim 1 to 3, it is characterized in that an end of described spring assembly (40) rotatably is connected with at least one the 3rd guiding plate (18), this guiding plate (18) and described contact holder (11) coupling connection.

7. switching device as claimed in claim 6, it is characterized in that, described the 3rd guiding plate (18) comprises the space (49) of cam-shaped, and coupling that connects with described contact holder is sold through joint efforts or bearing pin (50) slides therein and make described contact holder (11) move to its open position or opposite from its on-position when centering on rotating shaft (15) deflection.

8. as each described switching device among the above-mentioned claim 1-3, it is characterized in that described drive unit (10) is placed at least one supporting plate (14).

9. switching device as claimed in claim 8 is characterized in that, described drive unit (10) is fixed between the described supporting plate two spaces, that be fixedly connected to each other (14).

10. switching device as claimed in claim 8 is characterized in that, have respectively two first, second and the 3rd the guiding plate, described guiding plate can be rotated to support on the rotating shaft (15), this rotating shaft is placed on the described supporting plate.