CN1031444A

CN1031444A - Line protection switch

Info

Publication number: CN1031444A
Application number: CN88104377A
Authority: CN
Inventors: 赖恩哈德·施外格
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 1987-07-13
Filing date: 1988-07-09
Publication date: 1989-03-01
Also published as: DE3870063D1; BR8803504A; TR23732A; EG18881A; ES2030470T3; MY103314A; PT87967A; ZA885010B; IN168928B; PT87967B; GR3004924T3; AU602777B2; IL87063A0; CN1022272C; EP0299291A1; IL87063A; AU1895388A; EP0299291B1

Abstract

The door bolt claw component 15 of a line protection switch is a pivot with the lower end of lever 9, and the lever other end is contained in the manual control mechanism 4, spring 5 is housed in the mechanism 4 impels door bolt pawl 15 to rotate and provide contact 2 and 7 s' contact force around pivot.Short door bolt claw component 14 engages with tripping mechanism 3 and with 16 joints of the bearing on the housing wall at latch point 11 around axle 18 rotations and in that contact is secondary when engaging.Door bolt pawl 14 is connected on the close Coupling point of bearing being in when contact closes between latch point and support with 15.Door bolt pawl 14 can be moved by door bolt pawl 15 and can rotate with respect to door bolt pawl 15.The tripping mechanism activity, door bolt pawl 14 just rotates until breaking away from bearing around axle 18, from then on fastens pawl 14 and 15 with a bolt or latch around the rotation of the lower end of lever 9, and contact 2 leaves contact 7.

Description

Line protection switch

The present invention relates to a kind of line protection switch; a door bolt pawl of rotatably installing is contained in its latch mechanism; the door bolt pawl has a contact member in a side, engages with a tripping mechanism at opposite side, a manual control mechanism and at least one spring action is wherein arranged to this door bolt pawl.

This that constitute by member seldom, particularly the movable part of latch mechanism directly is contained in the sort of protection switch on the housing wall, finds the deviation of scantling responsive especially in practicality.To the housing wall that is made of plastics, because ageing of plastics produces further deviation again, this deviation may be damaged the function of line protection switch.Once did a lot of the trial in the past and made up, by using the expensive dropout member of amplifying.On the other hand, for the consideration of economic benefit, remove to make the line protection switch of forming by the least possible structural member by a trend.

The present invention is based on such observed result; particularly the contact lever that rotatably is contained in in the door bolt pawl when spring engages the situation that makes spring not only impel the rotation of door bolt pawl but also contact force is provided; latch power at the latch position; promptly the power between that part of on the tripping mechanism that the door bolt pawl leans on it is bigger, and its can other irregular conditions occur owing to rubbing and biting the dropout performance that makes such line protection switch.

The objective of the invention is to improve the reliable in action of line protection switch above-mentioned the sort of type, that promptly constitute by a small amount of structural member, and create with economic method.

The invention provides a kind of line protection switch, it contains a tripping mechanism, and one is the first door bolt claw component that engages on a latch position with tripping mechanism under the situation completely when tripping mechanism is in its normal operation position and the circuit by line protection switch; The housing that a line protection switch is arranged has one to be the bearing that engages with the first door bolt claw component under the situation completely when tripping mechanism is in its normal operation position and the circuit by line protection switch thereon; There is one to be mounted to and to make it transmit the motion to this first door bolt claw component but the second door bolt claw component not fixed thereon a Coupling point connection in this wise round a first axle rotation and with the first door bolt claw component; First is overlapping on Coupling point with the second door bolt claw component; Bearing and latch position are in respectively on the relative both sides of Coupling point and make the effective length of the effective length of the lever arm between bearing and the Coupling point less than the lever arm between Coupling point and the latch position; The first door bolt claw component is arranged to be guided around one second axis rotation and along an arc guide barrel; Latch position and bearing when tripping mechanism be the relative both sides that are in second axis completely under the situation respectively at its normal operation position and the circuit by line protection switch; This line protection switch also contains a spring, this spring thirdly affacts at one and impels the second door bolt claw component to center on this first axle rotation on the second door bolt claw component, and this second door bolt claw component impels this first door bolt claw component to rotate and tripping mechanism in the contact of latch position around first axle successively; There is a manual control mechanism to be connected on the second door bolt claw component; A fixed contact member and a movable contact member are arranged, this movable contact member band also can move to follow fixed contact to connect or separate on the second door bolt claw component by the rotation of the second door bolt claw component, this structure is action like this, when tripping mechanism moves, the tripping mechanism activity, spring impels the second door bolt claw component to make the first door bolt claw component around the rotation of second axis first door bolt claw component be removed from its bearing then, thereby decontrol first and second door bolt claw component, just leave around first axle rotation movable contact member from the fixed contact member thereby make spring will fasten claw component with a bolt or latch.

Like this, broken away from original latch mechanism by the motion tripping mechanism, the length variations of the door bolt claw component that unclamps can not pass on the short door bolt claw component that is bearing on the tripping mechanism.Have only one to follow tripping mechanism joint while spring to compare with a kind of with the switch that manual control mechanism acts on door bolt claw component thereon again, reduced in the power on the latch position (getting in touch accompanying drawing is to the power that acts under one), this just causes the reduction of essential dropout strength to reduce the skew of dropout strength simultaneously to breaking away from Effect on Performance.

Coupling point preferably is positioned at the top of second axis or very near second axis.

The first door bolt claw component forms a bearing can for the second door bolt claw component, and this bearing sees it is convex from two vertical direction, simultaneously/or first fasten claw component with a bolt or latch and on the latch position, see it is convex from two vertical direction.The first door bolt claw component can form with electrical insulating material is molded.

It is overhanging from Coupling point that the first door bolt claw component preferably is provided with an arm, separate with the fixed contact member at the movable contact member, first and second door bolt claw component is again under the situation of latch, this arm is pressed against on the guiding surface, and this surface assurance first door bolt claw component is correctly aimed at the second door bolt claw component.

The length overall of the second door bolt claw component is more preferably greater than the length overall of the first door bolt claw component, also is like this even this arm is located on the first door bolt claw component and is counted as under the situation of a part of the first door bolt claw component.

United States Patent (USP) 2,190 discloses a switch No. 257, and it contains a short door bolt claw component and a long door bolt claw component is contained on the common pivot, but this structure not have reduction to be added in power on the latch position.

The present invention will be described further by means of the embodiment that accompanying drawing illustrates roughly, wherein:

Fig. 1 illustrates the end view of line protection switch, and part breaks so that its off-state to be shown,

Fig. 2 illustrate line protection switch shown in Figure 1 before the on-state soon, i.e. state before in the contact contact,

Fig. 3 illustrates the line protection switch that is in on-state,

Fig. 4 illustrate just taken off button but the still undivided line protection switch of contact,

Fig. 5 illustrates the off-state that line protection switch is under the motionless situation in position shown in Figure 3 in manual control mechanism, all separates at trip free, contact,

Fig. 6 illustrate line protection switch again before the latch soon, the state that moves to position shown in Figure 1 from position shown in Figure 3 of manual control mechanism,

Fig. 7 is the exploded view of two door bolt claw components and a tripping mechanism,

Fig. 8 be door bolt claw component shown in Figure 7 assemble and with the vertical view of state on tripping mechanism engages.

Line protection switch by Fig. 1 has a latch mechanism that has a door bolt pawl 1 of rotatably installing, and door bolt pawl 1 has a contact member 2 in a side, engages with a tripping mechanism 3 at opposite side.Manual control mechanism 4 and switch spring 5 make the action of door bolt pawl.

In the embodiment shown, movable contact member 2 is arranged on the contact lever 6 that is rotatably installed in the door bolt pawl 1.Switch spring 5 engages with the free end of contact lever, counterclockwise rotates but also provides actuation to press to the contact pressure of fixed contact member 7 by a member 2 thereby not only actuate the door bolt pawl.Between the contact member, can arc quenching plate be set, but simple switch running does not just need by known manner.By tripping mechanism 3-be depicted as in an embodiment bar magnet (as pressing Deutsche Bundespatent OS 30 34 790)-current path, can be stretched over contact lever 6 by twisted wire that do not draw, known type, and lead to contact member 7 therefrom and lead to binding post.Another binding post can be arranged on the tripping mechanism 3 of opposite side of line protection switch.Line protection switch can be stuck on the carrying lath in the usual way with a quick clamping device 8.Tripping mechanism also can be the electromagnetic type or the thermally controlled release of a routine.

Door bolt pawl 1 rotatably is contained in the door bolt claw lever 9, in the embodiment shown, the lower end of door bolt claw lever 9 is to be guided in this wise in the door bolt claw lever chute 10, and the lower end that makes door bolt claw lever 9 is with the distance that keeps a substantial constant between the latch position 11 in the tripping mechanism 3.Manual control mechanism 4 rotates around a rotating shaft 12, and door bolt claw lever 9 is eccentric in pivot 12 ground and is connected in this manual control mechanism 4.Switch spring 5 is a tension spring in an embodiment, engages with door bolt pawl 1 by contact lever 6.Contact lever 6 rotatably is supported on this door bolt pawl 1 by a pivot pin 13.

Door bolt pawl 1 is divided into some longer 15, two members of the second door bolt claw component of first door bolt claw component 14 and one of a weak point and links together on 11 1 the short-range Coupling points 23 in distance latch position.Long door bolt claw component 15 can pass motion to door bolt claw component 14 but be not fixed thereon.Two door bolt claw components 14 are overlapping along fastening the pawl direction of extension with a bolt or latch with 15 on Coupling point.Short door bolt claw component 14 extends in latch position 11 and between a bearing 16 on the housing at (for latch position 11) beyond the opposite side of Coupling point 23.In other words, bearing 16 lays respectively on two opposite sides of Coupling point 23 with latch position 11.Long door bolt claw component 15 stretches from Coupling point 23 crosses switch spring 5 impetus thereon at least, is pivot pin 13 in an embodiment.Short door bolt claw component 14 rotatably is contained in 17 li of arc guide barrels by means of the rotating shaft 18 that stretches out from its both sides, and the upper end of guide groove is a (see figure 5) between the bearing on latch position 11 and the housing 16.Two bearings 16 preferably form by suitable dimple on the convex tendon on the two sides of housing wall, that be symmetrical in door bolt pawl longitudinal axis, as shown in Figure 8.

With reference to the on-state of line protection switch shown in Figure 3, switch spring 5 applies a power makes it counterclockwise rotate round its installation axis on door bolt claw lever 9 at pivot pin 13 places to growing like this it to be actuated on the door bolt claw component 15.This switch spring is actuated long left-hand end of fastening claw component 15 with a bolt or latch towards moving down like this, and the left-hand end that this left-hand end is actuated short door bolt claw component 14 again successively moves down towards the latch position 11 on tripping mechanism 3.Short door bolt claw component 14 can not be in the counterclockwise direction or clockwise direction rotate because its left-hand end and right-hand end are abutted against tripping mechanism 3 and dimple 16 respectively.The distance that distance between the 11 calcaneus branches seats 16 of latch position is followed between the pivot pin 13 less than Coupling point 23.The effective length of the lever arm between bearing 16 and the Coupling point 23 is less than the effective length of the lever arm between Coupling point 23 and the latch position 11 simultaneously.By matching the length of lever arm rightly, on short door bolt claw component 14, the downward force that is applied on the latch position 11 by the door bolt pawl decreases at least.In the embodiment shown, Coupling point 23 designs are roughly on the rotation of short door bolt claw component 14, promptly on the axis of two rotating shafts 18.

Short door bolt claw component 14 provides a bearing for long door bolt claw component 15, and this bearing is convex at one on perpendicular to two coordinates in the plane of drawing, and this just makes the tilting of door bolt claw component not influence the action of threading off.Short in an embodiment door bolt claw component 14 is moulded parts that the electricity consumption insulating material is made, and therefore the contact that is made of contact member 2 and 7 is paid with tripping mechanism 3 electric insulations.And short door bolt claw component 14 can be easy to manufacture the shape of more complicated.Short door bolt claw component 14 is also on perpendicular to two coordinates on the latch plane of drawing and basically along stretching on the direction of door bolt pawl and being designed to convex.Like this, the tilting between tripping mechanism 3 and the short door bolt claw component 14 is to the not influence of action of threading off.

When line protection switch will change on-state over to, switch off state shown in Figure 1 just changes state shown in Figure 3 over to by state shown in Figure 2.Tripping mechanism action then, switch spring 5 impels long door bolt claw component 15 to rotate short door bolt claw component 14, the axis that makes it center on rotating shaft 18 counterclockwise rotates, short like this door bolt claw component 14 just shifts out from its bearing 16, thereby door

bolt claw component

14 and 15 have been discharged, make the door bolt pawl because the effect of switch spring 5 is rotated round the rotation at the door bolt pawl 1 of the bottom of door bolt claw lever 9, make movable contact member 2 leave fixed contact member 7.

Manual control mechanism 4 has one and sees Fig. 2 for switch spring 5 used guide lug 19(); it be designed to make like this it under the trip free state shown in Figure 5, when manual control mechanism 4 manually maintained on the position shown in Figure 3, line protection switch is in action and after tripping mechanism 3 discharged door bolt pawl 1, switch spring 5 is mentioned turned the manually rotating shaft 12 of operating mechanism 4.Fig. 5 illustrates the state after the dropout.This moment, switch spring 5 can shrink slightly, because the torque that its convergent force produced forms a labile state, like this, the inherent spring force that spring be stretched is transferred to it on the position shown in Figure 1 after decontroling in manual control mechanism 4.Fig. 6 illustrates just the on off state before latch again.

In an embodiment, manual control mechanism 4 is cylindrical, shown in each figure.To reappose the on-state of Fig. 3 from the trip status of Fig. 5, as long as after it is decontroled, take manual control mechanism 4 to on-position at once from open position.When the manual control switch is being moved right after trip free as shown in Figure 5 in the counterclockwise direction, door bolt claw lever 9 will be fastened pawl 1 with a bolt or latch and will be lifted to latch position 11 under the tension of switch spring 5.In this course of action, door bolt claw lever 9 apart increases with the axis of switch spring 5, reaches position shown in Figure 1 up to them.Therefore, the torque that switch spring 5 is produced is increasing, thereby produces the power of latch again of an increase.

Particularly to be noted door bolt claw component-weak point door bolt claw component 14 and the Coupling point and the rotation of long door bolt claw component 15-in switching process.

In off-state shown in Figure 1, short door bolt claw component 14 is lifted from the supporting point (11 and 16) under the on-state situation.In ON Action, long door bolt claw component 15 transmits a downward force that is applied on the latch position 11 by Coupling point 23 to short door bolt claw component 14.After the bearing 16 at the short door bolt claw component 14 on the housing wall was leaned on, short door bolt claw component 14 just had three supporting points.Before leaning on the bearing 16 on the housing, long door bolt claw component 15 is supported on together with short door bolt claw component 14.Before movable contact member 2 contacted with fixed contact member 7, short door bolt claw component 14 was by upper bracket 16.Pressing under the on-state of Fig. 3, long door bolt claw component 15 on Coupling point 23 with the joint of short door bolt claw component 14 be by a convex arc shaped bearing specifically be that a some bearing is realized basically, this bearing makes to move along the compensation of the length direction of door bolt pawl 1 to be become and may and can bear tilting.

When tripping mechanism 3 is to be threaded off by thermal control or magnetic control or being coupled under the situation of line protection switch to thread off by foeign element moves; short simultaneously door bolt claw component 14 breaks away from latch position 11; switch spring 5 make short door bolt claw component 14 still by counterclockwise rotating a bit under the situation of upper bracket 16, thereby the floor projection of short door bolt claw component 14 shortened and make this door bolt claw component disengaging bearing 16.

Fasten claw component

14 and 15 with a bolt or latch and can move this moment, until reaching trip free state shown in Figure 5.Fig. 4 illustrates short door bolt claw component 14 and still leans against trip status on the bearing 16.Make comparisons with on off state shown in Figure 3, short door bolt claw component 14 has rotated the stretch journey.

For the latch again of switch can be changed on off state shown in Figure 6 from off state shown in Figure 5, finish until latch again, short door bolt claw component 14 is answered the clockwise direction rotation, this realizes by the arm 20 on short door bolt claw component 14 in an embodiment, and one is again the guiding molded lines 21 that latch is used on this arm rest.Short door bolt claw component 14 forms Coupling point on one side of bag shape bearing 22 shown in Figure 7, its another side then extends into arm 20.Under the situation of latch again, this arm 20 is at the guiding molded lines 21 that can lean on to aim at along long door bolt claw component 15 y directions with short door bolt claw component 14 on the open position after the dropout.

Being assembled together in Fig. 8 with the structural member shown in the exploded view in Fig. 7 illustrates with vertical view, the figure shows latch position 11, Coupling point 23 and bearing 16 on housing wall.

Described this principle that skew influenced of the member that latch position 11 is not subjected to latch mechanism that makes also can be advantageously utilised on the dissimilar fully line protection switch.But the number of components of latch mechanism increases, and is this unaffected and be added in corresponding the dwindling of advantage of the reduction of the strength on the latch position.Buffer occurred in containing many structural members of a plurality of toggle links and turning point, allowable deviation is become can be accepted.

Claims

1; a kind of line protection switch; a door bolt pawl of rotatably installing is contained in its latch mechanism; this door bolt pawl has a contact member in a side; engage with a tripping mechanism at opposite side; a manual control mechanism and at least one spring action are wherein arranged to this door bolt pawl; it is characterized in that containing a tripping mechanism; one is the first door bolt claw component that engages on a latch position with tripping mechanism under the situation completely when this tripping mechanism is in its normal operation position and the circuit by line protection switch; the housing that a line protection switch is arranged; there is one to be the bearing that engages with this first door bolt claw component under the situation completely thereon when tripping mechanism is in its normal operation position and the circuit by line protection switch; there is one to be mounted on a Coupling point, to connect in this wise round the rotation of first axle and with the first door bolt claw component and to make it transmit the motion to this first door bolt claw component but the second door bolt claw component not fixed thereon; first is overlapping at Coupling point with the second door bolt claw component; bearing and latch position are in respectively on the relative both sides of Coupling point and make the effective length of the effective length of the lever arm between bearing and the Coupling point less than the lever arm between Coupling point and the latch position; the first door bolt claw component is arranged to be guided around one second axis rotation and along an arc guide barrel; when tripping mechanism be in its normal operation position and the circuit by line protection switch be completely under the situation latch position and bearing be in the relative both sides of second axis respectively; this line protection switch also contains a spring; this spring thirdly affacts at one and impels the second door bolt claw component around this first axle rotation on the second door bolt claw component; this second door bolt claw component impels this first door bolt claw component to rotate and tripping mechanism in the contact of latch position around first axle successively; there is a manual control mechanism to be connected on the second door bolt claw component; a fixed contact member and a movable contact member are arranged; this movable contact member band also can move to follow the fixed contact member to connect or separate on the second door bolt claw component by the rotation of the second door bolt claw component; this structure is to move like this; when tripping mechanism moves; the tripping mechanism activity; spring impels the second door bolt claw component to make the first door bolt claw component around the rotation of second axis first door bolt claw component be removed from its bearing then; thereby decontrol first and second door bolt claw component, rotate the movable contact member from fixedly connecing around first axle thereby make spring will fasten claw component with a bolt or latch

Leave on the some member.

2,, it is characterized in that Coupling point is placed on above second axis or very near second axis by the line protection switch of claim 1.

3, by the line protection switch of claim 1 or 2, it is characterized in that the first door bolt claw component forms a bearing to the second door bolt claw component, this bearing sees it is convex from two vertical direction.

4, by each line protection switch in the above claim, it is characterized in that the first door bolt claw component forms with electrical insulating material is molded.

5, by each line protection switch in the above claim, it is characterized in that the first door bolt claw component sees it is convex from two vertical direction on the latch position.

6, by each line protection switch in the above claim; it is characterized in that the first door bolt claw component, to be provided with an arm overhanging from Coupling point, separate with the fixed contact member at the movable contact member, first and second door bolt claw component again under the situation of latch this arm be pressed against one and guarantee on the guiding surface that the first door bolt claw component correctly aims at the second door bolt claw component.