CN1241290A

CN1241290A - Latching mechanism of switching device

Info

Publication number: CN1241290A
Application number: CN98801465.3A
Authority: CN
Inventors: 雷纳·克罗伊策
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 1997-02-03
Filing date: 1998-01-22
Publication date: 2000-01-12
Anticipated expiration: 2018-01-22
Also published as: WO1998034257A1; EP0956577A1; CN1163931C; EP0956577B1; DE19703972C1

Abstract

The invention relates to a latching mechanism (1), characterized in that the intermediary lever (4) after release, springs back to its initial position, and in the released condition there is neither a working connection to the angle lever (3), nor to the ratchet lever (5). Depending on the position, the angle lever (3) holds the ratchet lever (5) in a more or less open position. On resetting, the angle lever (3) slides along a ramp (11), thus occasioning a controlled latching.

Description

The switch lock of switching device

The present invention relates to a kind of switch lock that is used to disconnect with Closing Switch device contact, it has curved bar, a pawl bar and an intermediate bar of an operated lock mechanism, be engaged on the intermediate bar at the on-position curved bar, in this position, the engagement of intermediate bar is simultaneously by constituting for discharging set pawl bar.

This type of switch lock is known.Now illustrate it by means of Fig. 6 and 7.

Fig. 6 represents that switch lock is in on-position, is engaged on the pawl bar at the long-armed of this position intermediate bar, and curved bar then is engaged on the galianconism of intermediate bar.By after the intermediate bar release, curved bar is transferred to off-position shown in Figure 7 at curved bar.In this off-position, curved bar still acts on the end of intermediate bar galianconism, and overcomes the back-moving spring power that acts on the intermediate bar intermediate bar is kept the position of expression in the drawings.Only curved bar is in again under the situation of its original position and just discharges intermediate bar and make intermediate bar go back to its original position when resetting.

In this scheme, curved bar in dispose procedure on the galianconism at intermediate bar between its whole moving period along this galianconism slippage.Curved bar and thereby whole latch mechanism braked therefrom.Consequently cause prolonging the response time of switch, this is undesirable when short circuit disconnects.

Disclose a kind of electric switch that a main contactor and an auxiliary contact point are arranged in DE 19526591 A1, these two contact points can be handled with the switch lock that is connected with switch lever by switch lever.In addition, this switching device also comprises a position of engagement that is made of release lever and pawl bar.Can the switch main contacts by means of one of switch lock with the hinged control lever of intermediate bar.

In DE 3829366 A1, introduced a kind of electric switch that has locking device.This switch has an electronics and discharges circuit and also comprise a back-moving spring with the mating reaction of switch lock spring, to guarantee the hand-reset by automatic release function enforcement switch.This back-moving spring allows the locking device of switch that hand-reset under the situation of minimum stroke length is arranged at the switch control crank.

By a kind of as can be known power switch that has a switch lock of DE 9206137 U1, it comprises a fork, U-shaped folder, ratchet and pawl bar and the connecting rod that is connected with switch shaft.Here, axle rotatablely move by single bar pass to three make moving movement can be by means of the contact bridge of push rod control.One disconnects spring one end bearing on the power switch shell, and the other end is bearing on the switch shaft.The length that disconnects the spring action arm of force thereon is variable according to the position of the switch.At on-position, the arm of force that acts on the switch shaft is little, so the switch lock load is minimum.At open position, overcoming of lax disconnection spring may be big, so that the contact load spring can be compressed fully.In this leverage,, but link together mutually though synergistic lever is hinged non-dismountablely.

In these illustrated schemes, when disconnecting, switch, therefore forms the very long response time in the above because short circuit makes whole latch mechanism synkinesia.

The objective of the invention is the switch lock of the above-mentioned type discharged and reset to aspect such as on-state from release condition at relevant its to be improved.

Reach by following feature by this purpose of the present invention: a) after pawl bar discharges, curved bar makes it move to its disengaged position and keep this position during release condition, b) does not have any effective connection between intermediate bar and the curved bar under release condition.

Intermediate bar can be designed to thus, it is only braked by intermediate bar in short stroke when discharging, and therefore can reach the short response time that is used to disconnect.

If curved bar has a protuberance, it moves to its disengaged position by the projection that is formed on the pawl bar with pawl bar when discharging, and has then obtained a favourable improvement of the present invention.In this way, can be according to the position of the position influence pawl bar of curved bar.This just might be when resetting with the mode of expectation fixing intermediate bar rotatably, and not with its kayser on pawl bar.

Further specify embodiments of the invention by means of accompanying drawing below, in the accompanying drawing:

Fig. 1 is in the perspective view of on-state for switch lock of the present invention;

Fig. 2 is in the schematic diagram of on-state for switch lock shown in Figure 1;

Fig. 3 is in the schematic diagram of release condition for switch lock shown in Figure 1;

The view in first centre position when Fig. 4 resets for switch lock is in;

The view in second centre position when Fig. 5 resets for switch lock is in;

Fig. 6, Fig. 7 illustrate the known switch lock that is in on-position and release condition.

Fig. 1 represents a switch lock 1 of switching device, and it has a support plate 2, a curved bar 3, an intermediate bar 4 and a pawl bar 5, and they rotatably are contained on the support plate 2 respectively.Switch lock 1 is in on-position among the figure, and in this position, the lower end kayser of curved bar 3 in Fig. 1 is on the galianconism of intermediate bar 4.Represent the lever do not represented among curved bar 3 and the figure or the tie point of latch mechanism with 6.By acting on the spring force of representing with arrow 7 on the tie point 6, make curved bar 3 rotate to open position.Pressing the on-position of Fig. 1, the intermediate bar 4 that loads by back-moving spring 8 by means of pawl bar 5 kaysers on the position of engagement 17.Expression is on the pawl bar 5 of locked position of coupler and is formed with a projection 9 in the drawings, and the protuberance 10 of curved bar 3 acts on the projection 9 when pawl bar 5 discharges, and in this way pawl bar 5 is moved to its disengaged position.The kayser of curved bar 3 is implemented in 11 ends of the sloping platform on intermediate bar 4.

Fig. 2 represents to have three and is used for the

fulcrum

12,13 of above-mentioned

lever

3,4 and 5 and 15 leverage schematic diagram.Compression spring 14 remains on its locked position of coupler by Fig. 2 with pawl bar 5.

When unlocking click yoke 5, curved bar is because the spring force that acts on along the direction of arrow 7 rotates to release condition, and the contact of related switching device disconnects under this state.

Fig. 3 represents the state that discharged, and the protuberance 10 of curved bar 3 remains on disengaged position with pawl bar 5 by its projection 9 under this state.At the state that has discharged, intermediate bar 4 is in its original position on stop 16, only acted on back-moving spring 8 in this position.In addition, intermediate bar 4 can be around its fulcrum 12 free movements.

Fig. 4 represents that switch lock 1 is in first centre position when resetting, that is the crossover position from release condition to the on-state, in this case curved bar 3 implement around fulcrum 13 with rotatablely moving that arrow 18 is represented.

Curved bar 3 has been placed on the sloping platform 11 of intermediate bar 4 in the drawings, and this intermediate bar is crossed the position of engagement 17 with respect to its original position thus and rotated a low-angle.Meanwhile curved bar 3 will remain on its disengaged position by pawl bar 5 by its protuberance 10.

Second centre position when Fig. 5 represents to reset, in this position, pawl bar 5 resets to link position after being discharged by curved bar 3.This moment, curved bar 3, that is to say that it does not also have kayser on intermediate bar 4 nearby before sloping platform 11 ends.Only curved bar 4 just gives intermediate bar 3 with freedom when arriving sloping platform 11 ends, and intermediate bar 4 under back-moving spring 8 acts on towards the direction travelling backwards of backstop 16.Meanwhile implement curved bar 3 at kayser on the intermediate bar 4 and intermediate bar 4 kayser on pawl bar 5, as illustrated in fig. 1 and 2.

Though the invention has been described referring to form of implementation that accompanying drawing is represented, but should be taken into account, doing like this is not that attempt only limits to represented form of implementation with the present invention, and should comprise the structure of the possible change that covered of promising claims content, modification and equivalence.

Claims

1. switch lock (1) that is used to disconnect with Closing Switch device contact, it has curved bar (3), a pawl bar (5) and an intermediate bar (4) of an operated lock mechanism, at this curved bar of on-position (3) kayser on intermediate bar (4), in this position, intermediate bar (4) is set pawl bar (5) kayser of release simultaneously, it is characterized in that: a) after pawl bar (5) discharges, curved bar (3) makes it move to its disengaged position and keep this position during release condition, b) does not have any effective connection between intermediate bar (4) under the release condition and curved bar (3).

2. according to the described switch lock of claim 1, it is characterized in that: described intermediate bar (4) leans against on the backstop (16) in release condition by the spring force effect, when resetting, being leaned against intermediate bar (4) at pawl bar (5) by curved bar (3) release goes forward, latched position (17) is removed and crossed to intermediate bar (4) at first from backstop (16) under curved bar (3) effect, intermediate bar itself then is moved back into backstop (16) and goes up and meanwhile mesh with pawl bar (5) after being discharged by curved bar (3).

3. according to claim 1 or 2 described switch locks, it is characterized in that: described curved bar (3) has a protuberance (10), and it makes pawl bar (5) move to its disengaged position by the projection (9) that is formed on the pawl bar (5) when discharging.

4. according to the described switch lock of above-mentioned each claim, it is characterized in that: described intermediate bar (4) has a sloping platform (11), and curved bar when resetting (3) is sliding until kayser on intermediate bar (4) along it on the sloping platform.