CN1080089A - The flap type locking device that is used for circuit breaker - Google Patents

Abstract

The flap type locking device that is used for the motor machine circuit breaker rotates and the trap 70 of slip adds the unusual centre position that feelers 80 detect trip button 12, and is by this feeler that trap is firmly stable then, prevents this trap of padlock, makes it in home.

Description

The flap type locking device that is used for circuit breaker

The present invention relates to the flap type locking device that a kind of electromechanical circuit breaker is used.

For the purpose of tangible safety, wish that the electromechanical circuit breaker is cut-off the position at contact can lock its manual actuating button, in patent FR-2596914, the locking device of a trap hasp of returning of this class use has been described.Equally, contact can not be eliminated fully by the danger of seam in circuit breaker.If each contact remains on the seam state, then common locking device will make circuit breaker locked owing to the shape of forcing or change each load bearing component, causes dangerous situation.

In some circuit breaker, manually the actuator button can present a centre position, and the welded condition beyond the position is normally opened and close in this position corresponding to contact, and this centre position is owing to the characteristic of tripping mechanism between button and contact causes.

One object of the present invention promptly is to utilize the unusual centre position of this manual actuating button and the fail safe that improves this locking device.

Another purpose is to provide a kind of simple, practical and compact locking device.

A kind of circuit breaker closing locking device that the present invention relates to comprises the assembly that contains separable contact, and contact can be driven by the manual actuating button that an energy touches previously from this assembly and can present closing position and normal off position; This device comprises a rotation trap that is arranged in the front of this assembly, and it can be moved to the driving that a home prevents button, and can remain on this position by at least one padlock or similar device.

According to the present invention, this locking device comprises:

A feeler is carried on and rotates on the trap, but by the unusual centre position of test button during rotating;

A sliding members that connects with this trap can be stabilized in the centre position of this button to stop this trap of padlock by this feeler.

This can preferably include this rotation trap by stable sliding members, and is provided with the device that trap is slided with respect to fixed base plate of this device.In another embodiment, this can comprise a slide block by stable sliding members, and it is by trap carrying and guiding, and this slide block and trap have suitable padlock hole, and the hole is stablized when living and can not be aligned mutually by feeler at slide block.This slide block includes some elements, is used for it is fixed in a fixing base plate; These elements match with the floor element of complementation, so that when slide block is not stablized firmly by feeler, they stablize firmly this slide block and the trap that carries it, and ought in a button closed position, be stablized by feeler by this slide block, a spring promptly promotes this trap slide block and is combined into a button off-position.

Below in conjunction with accompanying drawing and declarative description other features and advantages of the present invention thereof.

Fig. 1 is the part cross-section side view of a cased circuit breaker;

Fig. 2 is a part front view of being furnished with the circuit breaker of the first embodiment locking device, is illustrated in the padlock hasp in the motionless position;

Fig. 3 and Fig. 4 represent to be folded down the padlock hasp of position side, correspond respectively to that contact of breaker cut-offs and seam;

Fig. 5 and 6 is the front view of this hasp that the arrow A direction is found out from Fig. 3 and 4, illustrates the slide block of connection hasp and the position of trap;

Fig. 7 is the perspective view of analysing of this hasp;

Fig. 8 and 9 is the end view that is arranged in the second embodiment circuit breaker of its shell, is respectively the utmost point alive and is in stop position and locked position of coupler;

Figure 10 to 12 is the shell front view, represents that respectively trap is in position and padlock position on stop position, the folding;

Figure 13 is the zoomed-in view of base plate trap subsystem among Fig. 9;

Figure 14 represents an embodiment who rotates a slip trap.

The circuit breaker that its part is shown in Fig. 1 is a motor protection circuit breaker, and it comprises an assembly 10 that contains separable contact, and these contacts can manually be driven by a switch knob 11 and a trip button 12.This circuit breaker is installed in the shell 13, so that button can contact on the front surface 14 of this assembly by the window on the shell 15 usually.This assembly also includes: in response to the trip gear 16 of electric fault state; And one put mechanism again, and it cut-offs suitably according to the position of the state of buckle device and each button and contact 18 is closed in the pass.

When contact of breaker cut-off, this trip button 12 was positioned at retracted position 12A, and this can see from Fig. 3, and as shown in phantom in Figure 1.Fashionable when the contact pass, this trip button occupy the position 12B that goes out, shown in solid line among Fig. 1.This thing happens in meeting, although promptly this mechanism sends the instruction of cut-offfing each contact connection, and each contact by seam together; If such malfunction exists, then mechanism 17 will make this button be in a centre position 12C, and this can see from Fig. 4, and is shown in the empty outline line of Fig. 1.So the feature of button positions 12B and 12C shows as outstanding with respect to the bigger or less button of this assembly front surface 14.

There is a padlock hasp 20 to be fixed in the front of shell 13, constitutes a locking device with arbitrary method commonly used.With reference to Fig. 7, this hasp comprises a firm banking 30 that is attached on the shell, and comprises a rotation trap 40 that carries feeler 50 and safety slide 60.

Base 30 comprises a framework 31 and a bearing pedestal 32 around window 15, this seated connection is rotated the pivot 41 of trap 40, this trap 40 is folded down rotation between the position (Fig. 3 and 4) around a trunnion axis X lifting position (Fig. 2) and one, and this trap exposes window 15 in the former position; In latter position, this trap covers the part of window 15 at least, exposes button 11 and 12.Each bead 33 on the base remains on this trap by following condition and is folded down the position, and return spring 34 promotes this trap and moves to lifting position.

Trap 40 normally flat and have a prominent groove 42, assembly feeler 50 and director element 43,44, and the bearing element that is used for slide block 60.There are three padlock holes 45 to be located on the vertical bead 46 of the part in its level of trap.

Feeler 50 comprises that is shaped as a pin feeler element of 51, and this pin is directed doing translational motion in prominent groove 42, and by compression spring 52 effect and move, sell moving direction and position that button 12 is obviously depended in 51 translation position.Pin 51 has: one wide 53 is used for stable firmly this slide block 60; A leptoprosopy 54 can make slide block movement; And a shoulder 55, it is pushed to slide block by spring 52.

Safety slide 60 generally is flat and comprises: the groove 61 that matches with director element 43 on the trap 40; And a window 62, so that it is fitted on the trap 40, window 62 has a zone 63, its width is between wide 53 the width of narrow 54 width and pin.

Three padlock holes 65 are arranged on the bead vertical with the horizontal component of slide block 66, this bead 66 is parallel and the bead on trap 46 is adjacent, refer to that (jingers) 67 or other Connection Element are arranged on the slide block, below the bead 33 that is engaged on firm banking, thereby the trap slide block assembly is remained on home, shown in Fig. 3 and 5.

The use of above-mentioned hasp is as follows.When the operator wished the padlock unit, he rotated the trap 40 that carries slide block 60 towards being folded down position (Fig. 6), attempted then slide block is slipped over this trap along the sensing (Fig. 2 and 6) of arrow F.Suppose that button 12 is positioned at trip position this moment; If not so, then to sell 51 this button is pressed onto trip position, the power that spring 52 applies is greater than the resistance by button provided.

If at this moment contact disconnects, this is a normal condition, narrow 54 plane that is arranged in slide block of feeler, and therefore the latter can move to home, as shown in Figure 5; Each hole 45 and 65 overlaps and can make padlock 68 to insert and this circuit breaker is lived in locking.The operator can not operate the button that is covered by the trap slide block assembly, if because fault and contact by seam together, are then sold 51 wide 53 plane that is arranged in slide block, and therefore blocks its path.Refer to that 67 can not be engaged under the bead 33, and therefore and hole 65 can not align with hole 45, and the trap slide block assembly is moved to its lifting position (among Fig. 3 shown in the empty outline line) by spring 34, notice, in this operating period, feeler is retained in and can not gets the hang of, and the power on the failure button of being added in is limited to and equals the added power of feeler spring.

In the most preferred embodiment shown in Fig. 8 to 13, trap rotates around an axis X, and slides perpendicular to this axis, therefore not because of the slide block of a necessary special use.Trap 70 is supported on the base 30, has a plane 71a by means of every of frame axle 71() and rotate around a horizontal axis below the window 15.

Base 30 comprises perpendicular to the outstanding bead 35 of the frontal plane of shell 13; Each bead 35 comprises a hole 3b, and its effect is similar to the aforementioned hole 45 of accepting padlock 68 accordingly, and trap 70 is pushed to stopping of it or downward position (Fig. 8 and 10) by an extension spring 37.The pivot 71 of trap 70 can slide in slideway, and this slideway is that the vertical channel 38 in the rib 39 forms, and rib then forms from the limit of base 30 is outstanding.But the effect of trap 70 antagonistic springs 37 and rotate and slide.

Trap 70 has a fixedly feeler 80, and it has an inclined-plane 81 to match with the trip button 12 of circuit breaker.Feeler 80 also can be movably and comprise a related spring that this spring determines to put on the power on the button 12.In a side opposite with feeler, trap 70 is carrying the bead 72 with padlock hole 73.

For this unit of padlock, the operator turns to the stop position of trap 70 along the direction of arrow G from Fig. 8 and 10 on the folding of Figure 11 the position or covers the position, padlock can not coincide in this position, the plane 71a of pivot 71 moves to a upright position from an obliquity, the former position stops trap to slide (among Figure 13 shown in the empty outline line), and latter position can make its slip.Then, this trap is raised along the direction of arrow H, makes plane 71a slide into upper support position (Fig. 9 and 12) in its groove 38, and each hole 36 and 73 coincides herein.If contact is opened, can not run into any obstacle when then feeler slides, if contact by seam (the position 12C of button 12 shown in the empty outline line among Fig. 8), then feeler supports button and stops trap to enter the padlock position of Fig. 9 and 12.Notice that in each position of Figure 11 and 12, trap is against the surface 74 of base, and for the position from Figure 11 moves to the position of Figure 12, a wall portion 76 of trap must be engaged under one or more maintenance beads 75; This just guarantees that the accurate location of trap and trap strictness are parallel to self and slide, and has improved the security reliability of this device by preventing the passive revolution of button.

In the deformation program of present embodiment, rotate trap and can be parallel to its rotating shaft and slide, then, the torsion spring with noncontact circle (nom-contiguous turns) rotate this trap of promotion and reaches its stop position after translation.A side surface by feeler and this actuator button cooperates the welding that detects contact then.As shown in Figure 14, the flat pivot 77 of trap can rotate (arrow G) and slide (arrow H) in cylindrical hole 78, the hole is in base support seat 79, and the guiding trap prevents to rotate during sliding and during turning slide at the element as the groove 80 in supporting seat.Described embodiment can be modified and not depart from scope of the present invention, and this trap can particularly rotate around a vertical axis round another rotational that is parallel to this assembly front surface.An available lever is attached to the motion of amplifying it on the feeler, and circuit breaker can comprise a single manual actuating.Button, and this feeler can be parallel to the front surface motion of assembly, and term " base (chassis) " must be explained this base or dismountable being attached on the shell, or a standing part of this shell with the wideest implication.

Claims (8)

1, circuit breaker closing locking device comprises an assembly with separable contact, and the manual actuation button actuating that contact can be touched previously from this assembly also can present closing position and normal trip position; This device comprises the rotation trap that is arranged on this assembly front, and this assembly can be moved a home and prevent the action of button, and can it is characterized by by at least one padlock or similar device protection in this position:

A feeler (50; 80), it is loaded in and rotates trap (40; 70) on, during turning, this feeler can detect an improper centre position of button (12);

A relevant sliding members (60 with trap; 70); Can be stabilized in a centre position of this button by this feeler, to prevent this trap of padlock.

2, according to the described device of claim 1, it is characterized by, it comprises a fixing base (30), and this can be stablized sliding members and comprises and rotate trap (70); Be located at the device (38) that this trap is slided.

3, according to the described device of claim 2, it is characterized by, the pivot of trap (71,77) matches with slideway (38,78), and slideway is the part of base, and is parallel to the front surface (14) of this assembly.

According to the described device of claim 2, it is characterized in that 4, trap (70) is engaged on one at least and keeps below the bead (75) during sliding, this bead is the part of base.

5, according to the described device of claim 1, it is characterized in that, it comprises a fixing base (30), and this fixed pedestal can stable sliding members comprise a slide block (60) by trap (40) carrying and guiding, this slide block (60) has element (67), be used for slide block is fixed to this base, when this slide block by feeler (50) when stablizing, slide block just can not be fixed on this base with element (67).

According to each described device in the claim 1 to 5, it is characterized in that 6, sliding members that can be stable (60,70) and base (30) have a plurality of padlocks hole (65,45; 73,36), if this sliding members by feeler (50; 80) stablize, then these holes can not be aligned.

7, according to each described device in the claim 1 to 6, it is characterized in that having a spring to promote this trap (40; 70) to the position that discharges this button (12).

According to each described device in the claim 1 to 7, it is characterized in that 8, feeler (50) comprises a pin (51), it applies the power that spring force determines to be added to actuating button (12) by a spring (52).

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