WO2008067937A1

WO2008067937A1 - Switching apparatus

Info

Publication number: WO2008067937A1
Application number: PCT/EP2007/010315
Authority: WO
Inventors: Ralf MÜLLER; Frank Hustert
Original assignee: Abb Ag
Priority date: 2006-12-07
Filing date: 2007-11-28
Publication date: 2008-06-12
Also published as: CN101617381A; DE102006057649A1; DE102006057649B4; EP2100320A1; CN101617381B

Abstract

The invention describes a switching apparatus with a rotary handle for actuating a switching mechanism of a service switching device with at least one upper housing wall, wherein the switching mechanism comprises a latch mechanism with a latch lever, which can be moved between a latching position and an unlatching position, wherein the rotary handle, corresponding to the switching position of the switching mechanism, can assume a switch-on position and a switch-off position and, in the switch-on position, the force of a spring acts on the rotary handle in the direction of the switch-off position, and wherein, on tripping, the latch mechanism unlatches and the latch lever can be brought out of the latching position into the unlatching position and, when the rotary handle is reset into the switch-off position, the latch mechanism is latched again. This apparatus is characterized by the fact that a control pin, which can move between a latching position and an unlatching position, interacts with the latch lever and the rotary handle and, on tripping, can be brought out of its latching position into its unlatching position, in which it holds the rotary handle in a tripping position between the switch-on position and the switch-off position and impedes the latch lever on its return to the latching position.

Description

switching device

description

The invention relates to a switching device with a rotary handle for actuating a switching mechanism of a service switching device with at least one upper Gehäusewan- düng, wherein the switching mechanism comprises a latch mechanism with a displaceable between a Ver - and a Entklinkungsstellung latch lever, wherein the rotary handle according to the switching position of the switch lock a power - and can assume a switch-off position and, in the switch-on position, the force of a spring acts on the rotary handle in the direction of the switch-off position, and if the latch mechanism is unlatched and the latch lever can be moved from the locked position into the unlatched position and the rotary handle is returned to the switch-off position the latch mechanism is latched again, according to the preamble of claim 1.

Electrical installation switching devices have u. a. a contact point arrangement with a fixed and a movable contact piece arrangement, a thermal and / or electromagnetic release and a switch lock, which cooperates on the one hand with the one or more triggers and on the other hand with the movable contact piece arrangement. In the case of triggering a latch mechanism is unlatched by the trigger, and the contact opening is usually via a lever system, such as a toggle lever system, which transmits in conjunction with other levers and tabs the movement of the switching mechanism on the contacts and this opens permanently.

The lever system can be moved via a rotary movement of a rotary handle and placed in an over-center position. The rotary handle is then in its switch-on position. By this movement of the lever system, which is usually supported on the latch mechanism, a power storage is stretched. The latching mechanism acts on transmission parts and thus on the contact point arrangement. When switching on, it is closed via the switch lock and opened when switched off.

Triggering unlocks the latch mechanism by overriding the latch support so that the lever system can collapse. The switch lock acts in the collapse of the lever system due to the spring force in an opening manner.

When resetting the rotary knob to the original position (switch-off position), the latch mechanism is reactivated so that the switch lock can be switched on again. In known service switching devices, for example, as shown in DE 101 39 917 A1, the return of the rotary handle to the off position when triggered automatically by the force of a force acting on the rotary handle toward switch-off spring is released, see DE 202 14 578 U1. By the position of the rotary handle the switch position is visually displayed to the operator. However, the operator does not see whether the rotary handle has automatically reached the switch-off position due to a release, or whether the rotary handle was intentionally moved out of the switch-on position to the switch-off position by another person.

The switch lock can trigger without being affected when the rotary handle is held in the switch-on position. In contact welding, the rotary handle must not enter the switch-off position and thereby notify the operator of a contact opening which, in actual fact, does not exist when the contact is welded.

It is desirable that the operator be indicated by an intermediate position of the rotary handle between the on position and off position when tripping has occurred and, therefore, the pawl mechanism is unlatched to distinguish that state from the conscious off state. It is therefore the object of the present invention to further develop a switching device with a rotary handle for actuating a switching mechanism so that the rotary handle, when a triggering has taken place, remains in a tripping position between the switch-on and the switch-off position, wherein the switching device is simple to assemble and assemble should be, as well as to allow a service switching device with such a switching device. The object is achieved by a switching device with the characterizing features of claim 1.

Thus, according to the invention, a pawl lever displaceable between a locking position and a release position cooperates with the pawl lever and the rotary handle, which can be brought into its unlatching position when it is triggered, in which it engages in a triggering position between the switch - on and switch - off position stops and prevents the latch lever from returning to the latched position.

Compared with the prior art, a switching device according to the invention requires only one additional component, namely a control pin, and is therefore very simply constructed and mounted. The interaction of the control pin with the rotary handle and the latch lever according to the invention ensures that, when triggered, the rotary handle is not automatically moved to the switch-off position, but is held between the switch-on and switch-off positions in a triggering position indicating the triggering. At the same time, the pawl mechanism is held in the unlatching position via the pawl lever so that it is not possible to switch it on again from the tripping position.

According to a particularly advantageous embodiment of the invention, the control pin on a Entklinkungs- and a Verklinkungszone and a the upper housing by radical pen extension, and the upper housing wall facing side of the rotary handle has a pin extension receiving and via a locking shoulder in a control slope passing receiving pocket on, wherein the mutual arrangement of the control pin, the rotary handle and the ratchet lever is arranged so that when triggered the rotary handle with the locking shoulder on the pin extension in the release position and the latch lever is held by the Entklinkungszone of the control pin in the unlatching position, and that at a shipment from the trigger - in the off position of the rotary handle on the control slope pushes the pin extension so far into the housing that the pawl lever into engagement with the Verklinkungszone of the shaft in its Verklinkungsstellung can get.

The advantageous effect of this embodiment is that the Klinkenmecha- mechanism can be brought back into the latched state after tripping that the rotary handle from the trigger - forcibly in the off position is spent. The latch lever can then according to the invention again reach its Verklin- kungsstellung, the rear derailleur is reset as it were in the latched state. Only from this position is a reconnection of the rear derailleur by turning the knob from the off - possible in the on position.

Another advantage of the embodiment of the invention is characterized in that the pawl lever cooperates via a nose-like projection with the control pin. The change that must be made to the prior art on the latch lever is therefore minimal.

Advantageously, the control pin may comprise a longitudinally extended base body, on one narrow side of which a latching zone-forming longitudinally extended functional body having a pin extension located thereon is formed. In this case, the basic and functional body may be formed like a cylinder, and the diameter of the base body exceeds that of the functional body. The control pin can therefore be composed of simple basic geometric shapes, which keeps the design and manufacturing effort very low.

The movement of the control pin from the Verklinkungs - in the Entklinkungslage can be done according to a very advantageous embodiment in that it is acted upon on the other narrow side by a spring in the direction of the upper housing back.

The interaction of the control pin with the pawl lever can be designed in a further advantageous embodiment so that the control pin has at the transition between the basic and the functional body a holding means for a control pin holding engagement of the ratchet lever. The holding means can be formed in a particularly simple, advantageous manner by a shoulder on the base body.

The latch lever can advantageously be acted upon by a return spring with his nose in the direction of the control pin out. This ensures that when the ratchet lever is reset, it is safe to re-engage with the control unit. tap to keep it in the Verklin- kungslage during subsequent reconnection.

In order to prevent in the unlocking position of the control pin that it protrudes too far out of the upper housing walls, the control pin may include a retaining device, which holds the control pin in the housing. The restraint device can be formed in a particularly simple and thus advantageous manner by a collar surrounding the functional body at the transition between the functional body and the pin extension.

Reference to the drawings, in which an embodiment of the invention is shown, the invention and further advantageous refinements and improvements of the invention will be explained and described in detail.

Show it:

FIG. 1 shows a plan view of the upper housing wall of an installation switching device with a switching device according to the invention,

Figure 2a-c: schematically shows the interaction between the control pin, the rotary handle and the latch lever in the switch-on, trip and switch off, and

Figure 3 is a view of the installation position of the upper housing wall facing side of the rotary handle of a switching device according to the invention.

In FIGS. 1 to 3, identical or equivalent elements or assemblies are designated by the same reference numerals.

Reference is made to the figure 1. On the upper housing wall 12 of a service switching device 10 is a bearing pin 14 which is mounted perpendicular projecting on the upper housing wall 12. It can also be seen the rear front sides 16,18 of the service switching device 10 with screw terminals 20th

In the upper housing wall 12, an opening 22 is mounted, which is penetrated by the pin extension 24 of a control pin 26 (see also Figure 2a-c). In the representation ment of Figure 1 is the control pin 26 in its Entklinkungslage. Therefore, the pin extension 24 protrudes so far out of the upper housing wall 12 that it can hold a mounted on the bearing pin 14 rotary handle 28 (see Figure 3 and Figure 2b) in its release position, as will be explained below. The nose 30 of a ratchet lever 32, abuts against the lateral surface of the cylinder-like base body 34 of the control pin 26. As a result, the latch lever 32 is held in the Entklinkungslage the control pin 26 of Figure 1 in its Entklinkungsstellung, the latch mechanism of the switching mechanism, which is located inside the service switching device and not shown here remains characterized in its unlatched position.

Reference is now made to FIGS. 2a-c. These show a schematic representation of the interaction of the control pin 26 with the pawl lever 32 and the rotary handle 28 in the on position (Figure 2a), the release position (Figure 2b), and the off position (Figure 2c). The control pin 26 comprises an elongated, cylindrical base body 34. At its one narrow side, a likewise elongate, cylindrical functional body 38 is integrally formed. At the free end of the functional body 38 of the pin extension 24 is formed, here also as a cylindrical body with a functional body 38 corresponding diameter. At the transition between the functional body 38 and the pin extension 24, the control pin 26 carries a circumferential collar 40th

The control pin 26 is arranged with its longitudinal extension direction approximately perpendicular to the upper housing wall 12 of the service switching device 10. It is shown on the narrow side opposite the functional body 38 by a spring 56, here as a cylindrical spring, but it could also be a different type of spring, acted upon in the direction of the upper housing wall 12. The control pin 26 corresponds to an opening 22 in the upper housing wall 12 so that the pin extension 24 can penetrate the opening 22 to the outside.

On the upper housing wall 12 of the rotary handle 28 is placed. It is in the upper part of Figures 2 a - c in the plan view, and in the lower part of Figures 2 a - c shown schematically in longitudinal section. It has an approximately circular pot portion 42 and a NEN handle portion 44. The upper housing wall 12 facing side of the rotary handle 28 has a receiving pocket 46 which is arranged so that it can receive the pin extension 24 of the control pin 26. About a locking shoulder 48, the receiving pocket 46 is in a control slope 50, which extends from the locking shoulder 48 down to the level of the upper housing wall 12.

As FIG. 3 shows, the control bevel runs in the interior of the circular pot section 42 as an inclined plane extending in a circular arc. For reasons of greater clarity of the illustration, the displacement of the longitudinal section of the rotary handle 28 at the transition between the switch-on, the tripping and the switch-off position is shown in the lower part of FIGS. 2a-c as a lateral displacement parallel to the upper housing wall 12. It is understood that functionally the same effect is achieved when the rotary handle 28 is rotated about the pivot pin 14.

The rotary handle 28 is in the schematic representation in the lower part of Figures 2a - c by a cylindrical spring 25, and in an embodiment according to Figure 3 by a coil spring 27, at one end a tangentially extending leg 29 protrudes, acted upon in the direction of its off position. With regard to the further details of the storage, arrangement and functional use of the coil spring 27 in the rotary handle 28 reference is made to the already mentioned DE 202 14 578 U1.

In the switch-on position according to FIG. 2a, the latch mechanism of the switching latch is latched and the switching mechanism and thus the switching device is switched on. The latch lever 32 is pressed by a latch spring 52 into the latching position shown in FIG. 2a. The switching mechanism and the connection of the ratchet lever 32 with the switching mechanism is not shown here.

A molded onto the pawl lever 32 nose 30 is engaged with a shoulder 54 which is formed at the transition between the base body 34 and the functional body 38 of the control pin 26. As a result, the control pin 26 is held in its Verklinkungslage against the force of the spring 56, in which the pin extension 24 protrudes only a small piece through the opening 22 in the upper housing wall 12 into the receiving pocket 46 of the rotary handle 28. The force acting on the rotary handle 28 of the spring 27 and 25 is blocked in the closed position by known in principle constructive measures, so that the rotary handle 28 remains in its ON position, which is the operator by the upwardly facing handle portion 44 is displayed, see upper part of Figure 2a.

If a trip takes place, then the latch mechanism of the latch mechanism is briefly unlatched, whereby the latch lever is moved against the force of the pawl spring 52 in its Entklinkungsstellung. In the unlatching position, the pawl lever 32 releases the control pin 26 so that it is accelerated upward in the direction of the upper housing wall 12 due to the force exerted on it by the spring 56.

At the same time, the force of the spring 25 or 27 acting on the rotary handle 28 is released by a further mechanism connected to the latch mechanism, which is not shown here, so that the rotary handle 28 is acted upon in the direction of its switch-off position and is moving there puts.

Due to the low mass of the control pin 26 moves this under the influence of the force exerted by the spring 56 on him very quickly upwards. However, its upward movement is blocked by the abutment of the tip 48 'of the functional body 38 on the upper side of the inner wall of the receiving pocket 46. The control pin has now reached its Entklinkungslage, in which the pin extension 24 projects so far beyond the upper housing wall 12 that he represents an obstacle to the further movement of the rotary handle 28.

The collar 40 attached to the functional body 38 just below its tip 48 'prevents the control pin 26 from falling out by blocking excessive sliding of the functional body 38 against the upper housing wall 12.

The pin extension 24 holds via the locking shoulder 48 the rotary handle 28 on its way between the on position and the off position in an intermediate triggering position fixed, see Figure 2b. In this position, the handle portion 44 assumes an angle between 0 and 90 ° to the vertical, in the figure 2b is an angle of about 30 °. An operator recognizes at this position of the rotary handle 28 that a tripping of the switching device has taken place. As FIG. 2b further shows, in the unlatching position of the control pin 26, the base body 34 has been pushed upwards so far that, because of its larger diameter, it can hold the latch lever 32 in its unlatching position. This prevents the control pin 26 that the latch mechanism can latch again. If the operator were now to return the rotary handle 28 from the release position according to FIG. 2b to the switch-on position according to FIG. 2a, it would run free, the contact point arrangement could not be switched on again.

In order to be able to switch on the rear derailleur, the operator must first move the rotary handle 28 from the release position according to FIG. 2b to the switch-off position according to FIG. 2c. He has to expend so much force that the locking shoulder 48 can overflow the pin extension 24. Then, upon further movement of the rotary handle 28, the control pin 26 is pressed by the control slope into the interior of the switching device housing until it comes to rest approximately flush with the upper housing wall 12.

In this position, the main body 34 of the control pin 26 is again below the nose 30 of the pawl lever 32. The pawl lever 32 is thus released again and can pass through the force of the pawl spring 52 back into its Verklinkungsstel- ment, so that thereby the latch mechanism is latched again. The latch mechanism has now been reset, so to speak, into its latching position; Therefore, this switch-off position of the rotary handle 28 is also referred to as reset position.

From the reset position can now be closed with latched latch mechanism by turning the knob 28 in the closed position, the contact point arrangement on the switch lock.

Finally, it should be noted that in the description of the present invention, the basic technical teaching for solving the technical problem underlying the invention and a schematic, functionally illustrated implementation option has been presented. All further concrete implementation possibilities known to the person skilled in the art after disclosure of the teaching according to the invention described here are, of course, to be encompassed by the invention. LIST OF REFERENCE NUMBERS

10 installation switching device

12 Upper housing wall

14 journal

16 Behind the front

18 Behind front

20 screw connection terminal

22 opening

24 pin extension

25 cylinder spring

26 control pins

27 coil spring

28 rotary handle

29 thighs

30 nose

32 latch lever

34 basic body

38 functional body

40 collar

42 pot section

44 handle section

46 receiving bag

48 locking shoulder

50 control slope

48 'tip of the functional body

52 pawl spring

54 paragraph

56 spring

Claims

claims

1. switching device with a rotary handle (28) for actuating a switching mechanism of a service switching device with at least one upper housing wall (12), wherein the switching mechanism a latch mechanism with a between a

Ver - and a Entklinkungsstellung displaceable pawl lever (32) encompasses, wherein the rotary handle (28) according to the switching position of the switch lock a switch - and a switch-off position can take and in the on position, the force of a spring (25,27) the rotary handle (28 ) is acted upon in the direction of switch-off position, and wherein the tripping mechanism is unlatched and the pawl lever (32) from the Ver- in the Entklinkungsstellung be brought and upon resetting of the rotary handle (28) in the off position of the latch mechanism is latched again, characterized in that with the pawl lever (32) and the rotary handle (28) a cooperating control cam (26) interacts, which can be brought into its unlatching position upon release from its locking position, in which it engages the rotary handle (28) in a tripping position between the on and off positions, and the latch lever (32) prevents it from returning to the latch position.

2. Switching device according to claim 1, characterized in that the control pin (26) has a Entklinkungs- and a Verklinkungszone (34,38) and a the upper housing wall (12) by radical pin extension (24) and the upper housing wall (12) facing side of the rotary handle (28) has a pin extension (24) receiving and via a locking shoulder (48) in a control slope (50) passing receiving pocket (46), wherein the mutual arrangement of the control pin (26), the rotary handle (28) and the ratchet lever (32) is arranged so that when triggered the rotary handle (28) with the locking shoulder (48) on the pin extension (24) in the release position and the pawl lever (32) by the Entklinkungszone (34) of the control pin (26) is held in the unlatching position, and that when a movement from the trigger - in the off position of the rotary handle (28) via the control slope (50) pushes the pin extension (24) so far into the housing that the latch lever (32) in engagement with the Verklinkungszone (38) of the shaft can get into its Verklinkungsstellung.

3. Switching device according to claim 1 or 2, wherein the latch lever (32) via a nose-like extension (30) with the control pin (26) cooperates.

4. Switching device according to claim 3, wherein the control pin (26) comprises a longitudinally extended base body (34) formed on one narrow side of the Verklinkungszone forming elongate functional body (38) formed on the free narrow side of the functional body (38) pin extension (24) is.

5. Switching device according to claim 4, wherein the basic and functional body (34,38) are formed like a cylinder, and the diameter of the Grundkör- pers (34) exceeds that of the functional body (38).

6. Switching device according to one of claims 4 to 5, wherein the base body (34) on the other narrow side by a spring (56) in the direction of the upper housing wall (12) is acted upon.

7. Switching device according to one of claims 4 to 6, wherein the control pin (26) at the transition between the basic and the functional body

(34,38) has a holding means (54) for the control pin (26) holding engagement of the pawl lever (32).

8. Switching device according to claim 7, wherein the holding means is formed by a shoulder (54) on the base body (34).

9. Switching device according to one of the preceding claims, wherein the control pin

(46) comprises a retaining device (40) which holds the control pin (26) in the housing.

10. Switching device according to claim 9, wherein the retaining device by a functional body (38) circumferential collar (40) at the transition between the functional body (38) and the pin extension (24) is formed.

11. Switching device according to one of the preceding claims, wherein the latch lever (32) by a return spring (52) with its nose (30) is acted upon in the direction of the control pin (26) out.

12. Installation switching device with a switching device according to one of claims 1 to 1. 1