CN1105148A - Electric switch device - Google Patents
Electric switch device Download PDFInfo
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- CN1105148A CN1105148A CN 93121747 CN93121747A CN1105148A CN 1105148 A CN1105148 A CN 1105148A CN 93121747 CN93121747 CN 93121747 CN 93121747 A CN93121747 A CN 93121747A CN 1105148 A CN1105148 A CN 1105148A
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- Prior art keywords
- spring
- lever
- contact
- switch
- contact stem
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Abstract
An automatic switch with an operating mechanism contains a rotary support operating handle (10), a locking point (18, 19), and a rotary move contact rod (15). In order to reduce the quantity of component parts, the operating handle is made into a knuckle joint type rod, a first rod arm (12) of which is used as the operating handle. The contact rod rotates on a junction (14) and is supported by the junction. The junction is arranged on the second rod arm near the free end of the second rod arm (13). The locking point is installed in the range of the second rod arm between the operating handle and the contact rod. The contact rod, which is in the locking point, is tightly locked by a first spring (22). The first spring imposes a torque on the contact rod which rotates around the supporting point of the operating handle so that the required contact force is produced.
Description
The present invention relates to a kind of electrical switchgear; particularly relevant distributor breaker; residual current circuit breaker; motor protection is with circuit breaker or similar device; this class device comprises a breaker operation mechanism, has a lever of making the rotatable support of articulated con-rod form, and its first lever arm is as operating grip; the free end rotation on a tie point of its second lever arm is supported with contact stem, and this breaker mechanism also comprises a locking point and a rotatable mobile contact stem.
The present invention especially relates to the breaker operation mechanism that a kind of automatic circuit breaker is used.Usually, the spring that this breaker operation mechanism has a locking point and gives loading, the energy of spring discharges when release, and passes to the switch movable contact element, and moving contact element and fixed contact element are separated.
Known breaker operation mechanism is diversified.The breaker operation mechanism of describing in for example German specification of exhibition 2516594 has one can be around the contact stem of first fixed axis rotation, contact pressure is produced by a spring, this spring is supported on this contact stem on the one hand, is supported on the other hand on the angle lever that self is supported on second pivot.This angle lever and one are supported on that bar on the bar of first pivot is common to form a keyed end, and an impacting type armature acts on this bar, so that the unlocked state.This angle lever is being supported by a dihedral bar that is supported on the 3rd fixing pivot.The manual combined floodgate that also have that does not provide among the figure used lever.If this lever not, this operating mechanism is made up of 7 parts altogether.
German patent specification 3425996 has been described a kind of like this automatic circuit breaker operating mechanism, it comprises a moving contact element, an action bars, a handle, securing rod and have the toggle link of two lever arms, wherein lever arm hinge is connected on the action bars that is supporting moving contact element.This securing rod leans against on the keyed end.This breaker operation mechanism is also complicated, altogether by forming more than 7 parts.
German patent specification 3717733 provides a kind of automatic circuit breaker operating mechanism, on its fixed axis contact stem is housed, a release lever, a locking driven rod and one spring.This mechanism also has a lever, and it joins on this locking driven rod by a projection coupling that does not lock.In this mechanism, total component count is also more than 7.
The automatic circuit breaker operating mechanism of similar structures design also is set out in German patent specification 3021867 and EP0103167A
1In.
In all these switching devices, we can find that the supporting of lever and the supporting of contact stem are separated, and this that is to say that in each case, an axle is used for lever, and the spatially separated axle of another root is used for contact stem.Therefore for lever is joined on the contact stem, and form a keyed end, then essential transmission link, this link is made of a plurality of parts.
The document that this paper starts the electric switchgear of described type is documented in the French Patent (FRP) specification 1239387.In this switch, contact stem is contained on the lever, but not locking.But replace such structure, at closing position, this lever and hinged lever arm are set one first resting position, utilize a striking to finish from first resting position via the transformation of a dead-centre position to second resting position.
The purpose of this invention is to provide the switching device that a kind of this paper starts described type, the formation of its breaker operation mechanism and keyed end is simplified manyly than existing breaker operation mechanism, and especially, it only needs few assembly.
The object of the present invention is achieved like this, in the second lever arm scope between lever and contact stem, a keyed end is housed, and wherein this contact stem is locked by one first spring.This first spring makes contact stem be subjected to the moment around the fulcrum of lever, thereby produces required contact pressure.
In the further preferred embodiment of the present invention, a deadlock lever can be integrally molded on this contact stem, and have elasticity.
The Unitarily molded deadlock lever on contact stem of this root moves with contact stem, because these two bars form a keyed end mutually, these are characterized by in the claim 3.
In addition, also have one second spring, be used to produce an opposing torque, the torque of first spring when closing position greater than the torque of second spring, and when the separating brake position less than the torque of second spring.
In the preferred embodiment of the present invention, the direction of second acting force of the spring is to adjust like this, and it makes contact stem and lever be in disconnected gate position.
According to structure of the present invention.Made breaker operation mechanism only has four parts, that is to say lever, contact stem and first and second springs.At lock-out state, first spring acts on the breaker closing direction all the time, and second spring is such calibration, and acts at a certain angle on the lever, promptly compares with spring force, and the component that acts on disconnected lock direction is less.When this contact stem moves to disconnected gate position, the direction of second acting force of the spring changes along with being in the moving of pivoting point between second lever arm and contact stem, thereby makes the power that affacts on the lever or moment obviously greater than the moment that produces from first spring.
Because a side of second spring is fixed in switching device, and opposite side can pivot on lever, the fulcrum of second spring switch on this lever then, and fixed pivot is maintained fixed, thus angle between the fulcrum line of the fixed pivot of it and second spring and lever changed; This angle is very little when closing position, but then obviously becomes big in the separating brake position.
Of the present invention further improving in the theme that is further embodied in dependent claims.
Describe the present invention and its perfect and improvement with reference to the accompanying drawings in detail.Particularly according to figure explanation operating mechanism embodiment of the present invention and two improvement projects of the present invention.Accompanying drawing is:
Fig. 1 represents to be in the operating mechanism of closing position,
Fig. 2 represents to be in the operating mechanism of separating brake position,
Fig. 3 is illustrated in the operating mechanism of trip position,
Fig. 4 is illustrated in the operating mechanism of so-called auto-cutout position,
Fig. 5 represent mechanism of the present invention distinctive improvement and
Fig. 6 represents the end view of contact stem.
For the purpose of the explanation breaker operation mechanism is convenient, in Fig. 1 to 4, only represent rod member with lines, the lever 10 of this operating mechanism is made the hinge type bar, and around fixed pivot 11 rotation supports, first lever arm 12 of hinge type bar 10 forms an operating grip, can finish manually closing and sub-switching operation of automatic switch by this one handle.Lever 10 also has one second lever arm 13, and these two lever arms 12 and 13 constitute an obtuse angle each other.The length of second lever arm 13 is about the twice of first lever arm 12.
In the free end distance apart from second lever arm 13 is the d part, and a centring point 14 is housed, and rotation at that point is articulated with a contact stem 15.This be approximately apart from d second lever arm 13 length 1 1/5.Contact pole pivots round the center of the contact on lever arm 13 14, have among the contact elements 16(figure away from an end of fulcrum 11 in contact stem and only to illustrate), this contact elements is as moving contact, in order to a not shown fixed contact acting in conjunction.Contact stem on the inner 17 of fulcrum 11, be approximately perpendicular to lever arm 13 projection 18 is housed, this projection 18 intersects with lever arm 13 as shown in Figure 1, and they have a securing rod 19 that is connected with lever arm 13 in the free end interaction of end points 17 dorsad on the projection.This securing rod integrally springform on lever arm 13.
The free end of lever arm 13 only represents that with arrow the snap-in in a fixed manner of the other end of lever arm is on a reed site 21 by stage clip 20 interlocks among the figure.End points 17 is by another spring 22 interlocks, and the other end of this arm also is hooked on the centring point 23 in a kind of fixing mode.
As mentioned above, two lever arms 12 and 13 constitute an obtuse angle mutually, use symbol here
2Expression.Constitute an angle α between the line of the direction of the power of spring 20 and connecting axle 11 and 14
1, contact stem 15 constitutes angle α with the line of connecting axle 11 and 14
3, angle [alpha]
1And α
3Round coaxial 14, be in the line scope of connecting axle 11 and 14.The centring point 23 of spring 22 is arranged in contact point one side of the connecting line of connecting axle 11 and 14, or moving contact and fixed contact one side, and the force direction of spring 22 and this contact stem 15 have constituted a sharp angle
4
When for example the reason of the electromagnetic system that describes in detail in owing to figure did not make the automatic switch tripping operation, 19 motions of elastic locking bar were also left protrusion 18 and spring 22, and this spring is appointed as first spring, and the pulling contact stem forwards the position of lever 10 counterclockwise to, as arrow F among the figure
1Shown in direction, and this moment spring 20 force direction remain unchanged, still be in position shown in Figure 3.Fig. 4 represents such position, and promptly contact stem 15 is in the separating brake position, and the force direction of spring 22 is such, makes the component of spring 20 trend towards promoting lever and is rotated counterclockwise, so lever 10 turns to separating brake position shown in Figure 2.During this process of execution, this keyed end is realized locking between bar 19 and projection 18.
Fig. 3 shows so-called automatic trip position I.In this position, operating grip 12 and lever 10 tighten up, and keyed end is subjected to one and uses arrow F
2The effect of the non-locking power of representative is non-locking.As mentioned above, the power of spring 22 produces a torque around pivot 14, thereby produces the power F of break contact
1If operating grip 12 continues to tighten up, movable contact rod 15 is rotated as shown in Figure 4 up to propping up on the fixed pivot 24 and is stopped.Based on the line of the braking point 24 and the point of rotation 14, pivotal point 23 can followingly arrange that the power of spring 22 is vanishing in fact on contact stem, and when operating grip 12 discharges then, and spring 20 is screwed into as shown in Figure 2 separating brake position with lever 10.When operating grip 12 was tightened up, Fig. 4 was a so-called automatic trip position II.At this moment reached trip position,, and remained on resting position because spring force 21 makes breaker operation mechanism move to the separating brake position.
For breaker operation mechanism is closed a floodgate, with operating grip 12 clockwise around rotating shafts 11 rotations, up to moving contact element 16 with decide contact elements and be close to till, Fig. 1 arrow F
3Roughly express to property above-mentioned combined floodgate situation.
Fig. 5 illustrates the view of a switch case 50, in this view lower area, a recess 51 is arranged at the bottom of housing 50, has fixedly a nose 52 and a movable nose 53 on it, is incorporated on the end cap crossbeam by can make this switch case moment pass to nose.Housing 50 has splicing ear 54 and 55, wherein splicing ear 54(figure left side) be connected to by bonding conductor 56 and decide on the contact elements 57 moving contact element 58 effect of matching on this is decided contact elements 57 and is contained in contact stem 59.
In housing 50 inside, be rotatably installed with a lever 60 on axle 61, it is an articulated con-rod, has first lever arm 62 and second lever arm 63 as operating grip on it, contact stem 59 also is a kind of hinge joint bar, and it is installed on the free end of second lever arm 63 by bearing 64.On non-moving contact spare 58 ends of contact stem 59, integrally be fixed with a nose 65.On switch lever 60, near axle 61, a U-shaped arm 66 is installed integrally greatly, the open side of this U-shaped spare is pointed to axle 61.Produce on the mechanical weakness by a groove 69 being parallel to connecting plate 67 and the friendship Cha Chu between the leg 68 that second lever arm 63 extends, thereby make the free supporting leg 68 can springing in its longitudinal extent.In its outside, this free supporting leg 68 has a locking end 70, and it and nose 65 constitute a keyed end jointly.The arm 66 that has supporting leg 68 and connecting plate 67 be with the embodiment shown in Fig. 1 to 4 in securing rod 19 corresponding to.Nose 65 is such parts, and it is equivalent to label among Fig. 1-4 embodiment is 18 parts.
Here about the effect of power, the spring configuration is identical with the situation of Fig. 1-4 with similar means.
The switch of Fig. 5 has among the arc control device 71(figure and can see), it carries out the zero current cross blocking.In addition, the switch of Fig. 5 has an electromagnetic system 72, is used for energizing switch action, and in the switch for example arm 68 along the direction bending of arrow V, thereby with keyed end 65/70 release.
Fig. 6 only illustrates a lever 80.By axle 81 with this lever swivel bearing in housing 50, axle 81 is corresponding with axle 61.This lever 80 also is the radial type bar, it has as first lever arm 82 of operating grip and second lever arm 83, and the latter is the self-turning-back shape, and bearing 84 is housed on its free end, can assemble a contact stem (not shown) on it, this bar is corresponding with contact stem 59.Also have the molded parts that are roughly V-arrangement 85 of monoblock on lever 80, it is similar to lever 60, and this integral body module 85 joins on this lever 80 by an arm 86, and its another supporting leg 87 is towards second lever arm 83.The outside at second arm 87.Have a projection 88, it is similar with locking termination 70, can be meshed with a nose termination that is similar to the nose 65 of contact stem 59.The main distinction between Fig. 5 and 6 embodiment is that integral module 85 is installed in the opposite side of lever 80, rather than an arm 66 is positioned on this lever 60.
First lever arm 62,82 is corresponding with first lever arm 12 of Fig. 1 respectively, and second lever arm 63 is corresponding with second lever arm 13 respectively with 83, and fulcrum 64 and 84 is corresponding with fulcrum 14 respectively, and contact stem 59 is corresponding to contact stem 15.
The specific embodiment that the present invention is not limited to describe in the above description; self-evident; the present invention's design can be realized by many examples and perfect scheme; particularly; it can be used for the various electric switches that locking is arranged; for example be used for distributor breaker, residual current circuit breaker, motor protection is with circuit breaker or electric switch.
Claims (10)
1, electric switch, power circuit breaker particularly, comprise an operating mechanism, have a rotatably supported lever, it makes hinge joint formula bar, first lever arm (12) of lever is as operating grip, and near the junction point (14) the free end on its second lever arm (13) is gone up rotation contact stem is installed, this junction point is connected with operating mechanism, this operating mechanism also comprises a keyed end and a contact stem that rotatablely moves (15), it is characterized in that, be positioned at the regional lever (10) of second lever arm (13) and the position between the contact stem (15), be formed with a keyed end (18,19), contact stem (15) is lived by first spring (22) locking in this point, first spring (22) applies a torque on the contact stem of the fulcrum (11) that centers on lever, thereby produces contact force.
According to the switch of claim 1, it is characterized in that 2, keyed end wherein (18,19) is a Unitarily molded securing rod (19) on contact stem (15), and this bar has elasticity.
According to the switch of claim 2, it is characterized in that 3, this securing rod (19) constitutes described keyed end with the nose acting in conjunction on contact stem (15).
4, according to the switch of one of claim, it is characterized in that, first spring (22) applies a torque on lever (10), contact stem (15) is moved towards the combined floodgate direction around the rotating shaft (11) of this lever, second spring (20) applies a torque in the opposite direction, wherein the torque of first spring (22) when closing position greater than the torque of second spring (20), otherwise and when the separating brake position.
According to the switch of claim 4, it is characterized in that 5, second spring (20) loads on the free end of second lever arm (13), direction is approximately the line direction of the rotating shaft (11) and the contact (14) of attended operation handle (10).
According to the switch of one of claim 1 to 5, it is characterized in that 6, second spring (20) is kept contact stem and lever in the separating brake position behind sub-switching operation.
According to the switch of claim 6, it is characterized in that 7, at closing position, the direction of the power of second spring (20) is extended along planar contacts side dorsad, this plane is on the backguy space of the rotating shaft (11) of lever (10) and contact (14) formation.
According to the switch of one of claim 5 and 6, it is characterized in that 8, at closing position, the direction that second spring (20) is exerted oneself only departs from low-angle (α of line of the fixedly centring point of the rotating shaft of attended operation handle (11) and spring (20)
1).
According to the switch of one of aforementioned claim, it is characterized in that 9, the direction of spring (20) active force increases during lever rotatablely moves the separating brake position.
According to the switch of one of aforementioned claim, it is characterized in that 10, the direction of spring (22) active force is roughly along extending perpendicular to the contact stem at closing position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93121747 CN1105148A (en) | 1993-12-31 | 1993-12-31 | Electric switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93121747 CN1105148A (en) | 1993-12-31 | 1993-12-31 | Electric switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1105148A true CN1105148A (en) | 1995-07-12 |
Family
ID=4993766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93121747 Pending CN1105148A (en) | 1993-12-31 | 1993-12-31 | Electric switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1105148A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100459011C (en) * | 2000-03-17 | 2009-02-04 | Aeg低压技术股份有限两合公司 | Locking handle connector |
| CN101471205B (en) * | 2007-06-07 | 2013-03-20 | 伊顿公司 | Positive resetting close latch for closing electrical switching apparatus |
-
1993
- 1993-12-31 CN CN 93121747 patent/CN1105148A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100459011C (en) * | 2000-03-17 | 2009-02-04 | Aeg低压技术股份有限两合公司 | Locking handle connector |
| CN101471205B (en) * | 2007-06-07 | 2013-03-20 | 伊顿公司 | Positive resetting close latch for closing electrical switching apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |