KR20080044855A - Switch-on energy store apparatus - Google Patents

Abstract

In order to form a switch-on energy store apparatus for a circuit breaker, wherein a switch-on energy store (1) is held at a first end (2) and is connected to a cam (6) of a tensioning apparatus at a second end, with which tensioning apparatus means interact which limit a return movement, which switch-on energy store apparatus has a simple and cost-effective design, the invention proposes that the means have a ratchet mechanism arranged at the first end of the switch-on energy store.

Description

Switch-on energy storage device {SWITCH-ON ENERGY STORE APPARATUS}

The present invention relates to a switch on energy storage device for a circuit breaker, wherein the switch on energy storage is held at the first end and connected to the eccentric of the stress device at the second end, the stress device and the return movement limiting means interacting. do.

Switch-on energy storage devices for circuit breakers are known from DE 195 03 679 C1. A switch on spring, such as a switch on energy store, is fixed to the first end and connected to an eccentric arranged on the stress and switching shaft at the second end. In the stress device for the switch on spring, the return block is formed as return movement limiting means; The return block has a bush of the lifting shaft and stationary elements arranged on the wall of the stress device, and a free movable bearing. During the stress operation, the bush is in this case separated from the lifting shaft via the freely movable bearing. After the switch on operation of the circuit breaker, while the energy stored in the switch on spring is used to rotate the switching shaft, the direction of movement of the switching shaft and the switch on spring end may be reversed due to the movement energy. During this opposition, the bush is rotated by the free movable bearing until the stop element arranged on the bush is held against the stop element arranged on the wall. If two stop elements come into contact with each other, further movement is prevented. The free movable bearings are precision parts and are therefore very expensive.

It is an object of the present invention to provide a switch-on energy store of the type mentioned initially with as simple and economical design as possible.

This object is achieved according to the invention with the fact that the means has a catch mechanism arranged at the first end of the switched on energy store. The device is simple, economical and at the same time low in wear since the return movement of the switched on energy store is simply limited or prevented by a catch mechanism arranged at the first end of the switched on energy store.

In a convenient refinement, said means comprises a guide portion for triggering a catch mechanism, whereby the catch mechanism has a first end of the switched on energy store formed in the guide portion and connected to a slot connected to the second end of the switched on energy store. And is movably mounted on a fixed spindle. Due to the eccentrically mounted and slotted second end of the switched-on energy store, an arrangement in which the movement path of the guide portion with respect to the free end during the switch-on operation is different from the movement path after the switch-on operation is preferred, so that the catch Due to the mechanism, firstly the stress of the switched on energy store is generated and secondly the return movement is limited.

In a preferred embodiment, the catch mechanism has a catch which can rotatably move about fixed sprinkles between the first and second positions and the spring elements on the catch operate. Due to the catch, the catch mechanism can have a simple design.

In a preferred embodiment, the fixed spindle and spring element are held on the stationary elements. In this arrangement, the catch can be rotated about the spindle between the first and second positions by a spring element in a simple manner.

In a convenient configuration, a stop element which interacts with the catch on stress cutout is provided on the guide portion. As a result of the arrangement of the guide-floating stop elements and the interaction with the stress cutout, a possible simple way of deflecting the catch from the first position to the second position is achieved.

In another refinement, the catch has an inspection cutout. In the case of the return movement of the switched on energy store after the switch on operation, the stop element engages the inspection cutout, so that the return movement restriction is formed in a simple and effective manner.

The invention will be explained in more detail in the following detailed description using the drawings and an exemplary embodiment with reference to the drawings.

1 shows a schematic view of a switched on energy storage device in a first position with a switched on energy storage under stress.

FIG. 2 shows a schematic view of the switched on energy storage device in a second position with the switched on energy storage partially relieved of stress.

FIG. 3 shows a schematic illustration of a switch on energy storage device in a third position with a switched on energy storage that is stress relieved.

4 shows a schematic view of the switched on energy storage device in a fourth position.

5 shows a schematic view of the switched on energy store in a fifth locking position.

1 shows a switched-on energy storage form connected by means of a catch device 3 to the eccentric 6 at the second end 5 in a manner that is connected to the fixing part 4 at the first end 2 and in a jointed manner. A switch on energy storage device with a spring element 1 is shown. The eccentric 6 and the cam disk 7 are arranged fixedly on the stress shaft 8. The cam disc 7 interacts with the switching shaft 9 which is part of an actuation mechanism (not shown) to separate the switching contacts of the circuit breaker. The guide part 10 with the slot 11 and the stop element 12 are guided through the first end 2 of the switched on energy store 1. The guide part 10 is mounted on the fixing part 4 by a spindle 13 connected to the second end 5 and extending through the slot 11. The catch device 3 is a catch 14 rotatably mounted on the spindle 13, and is fixed on the catch 14 at the first end 16 and at the second end 17 a fixing part 4. It includes a spring (15) fixed on the). The dotted line A corresponds to the movement path of the second end 5 and the dotted line B corresponds to the movement path of the stop element 12 during the switching or stress operation of the switched-on energy store. The movement path B due to the dynamic arrangement of the system is covered with opposite movements and other trajectories when the stop element 12 moves from the upper dead center point to the lower dead center point of the switched-on energy store. Latching using the resulting catch 14 is characterized in that it becomes possible.

In FIG. 1, the switched on energy store is in a stressed state and the spring element is under compressive deformation. The second end 5 is at the upper opposite point of the movement trajectory A, the stop element 12 is arranged close to the upper bending point of the trajectory B, and the spindle 13 of the guide portion 10 It is arranged in the lower stop of the slot (11). The catch 14 is held in the first position by the tension of the spring 15.

If a switching action is triggered, the energy stored in the switched on energy store is transmitted to the cam disk 7 via the eccentric 6 and the stress shaft 8 and consequently to the switching shaft 9. In this process, the second end 5 moves along line A in the counterclockwise direction and the stop element 12 moves on line B in the clockwise direction.

2 shows a switched on energy store 1 with a catch mechanism at an arbitrary position immediately after the triggering of the switching operation, the switched on energy store 1 being partially stressed. The energy of the switch on energy store 1 causes the rotation of the cam disk through the stress shaft 8 to move the switch shaft 9. The second end 5 is arranged at the nine o'clock position on line A, and the stop element 12 moves downward in line B. As shown in FIG. The spindle 13 is arranged at a position close to the second end of the slot 11 with respect to the slot 11 as a result of the movement of the guide portion 10 connected to the second end 5.

3 shows the switched-on energy store in a state where the stress has been fully relieved, in which the second end 5 and the stop element 12 reach the lower inversion point of the respective lines A and B. FIG. . In this position, the spindle 13 is at the top of the slot. The stop element 12 is held against the catch 14 in the L-shaped stress cutout 18. In this position, the stop element 12 begins to move the catch 14 rotatably mounted against the spring force of the spring 15 away from the fixing part 4, the spring 15 being stressed in the process. Receives.

4 shows the position of the switched on energy store 1 and the catch mechanism immediately after the switching operation of the circuit breaker. The cam disc 7 does not contact the switch shaft 9, and the contacts of the switching shaft 9 and the circuit breaker are locked and in the switched on position. Due to the energy of the switched-on energy store 1 which is at least partly converted into kinetic energy during the switching operation, the guide portion 10 is moved upwards and the stop element 12 is stress cutout 18 of the catch 14. Leaves. At this point, the catch 14 is moved back to the first position by the tension of the spring 15. Due to the further rotation of the eccentric 6, the switch on energy store 1 is partially stressed, as a result of which the switch on energy store 1 performs a return movement. This return movement is limited by the catch 14 which is moved back to the first position by the spring 15 as will be explained with reference to FIG. 5.

FIG. 5 shows the position of the switch on energy store 1 and the catch mechanism after the switching operation of the circuit breaker with the stop element 12 is latched. The stop element 12 engages and locks into the inspection cutout 19 of the catch. As a result of this locking, further return of the switched on energy store 1 is reliably prevented. Therefore, the circuit breaker can be switched off again immediately and new stress action can occur in the switched on energy store.

Claims (6)

A switch on energy storage device for a circuit breaker, The switched-on energy store 1 is held at the first end 2 and connected at the second end to the eccentric 6 of the stress device, the stress device and the return moving limiting means interacting, The means 3, 10, 13, 14, 15 have a catch mechanism 3 arranged at the first end 2 of the switched on energy store 1, Switch on energy storage device. The device (3) according to claim 1, wherein the means (3, 10, 13, 14, 15) comprise a guide portion (10) for triggering a catch mechanism (3), by means of said catch mechanism of the switched on energy store (1). The first end 2 is movably mounted on the spindle 13 which is formed in the guide part 10 and is fixed by the slot 11 which is connected to the second end 5 of the switched-on energy store 1. felled, Switch on energy storage device. 3. The catch (14) according to claim 2, wherein the catch mechanism (3) is rotatably movable about a fixed spindle (13) between the first and second positions and on which the spring element (15) operates. Having, Switch on energy storage device. 4. The fixed spindle and the spring element 15 are held on a fixed element 4. Switch on energy storage device. The stop element 12 according to claim 3 or 4, which interacts with the stress cutout 18 on the catch 14, is provided on the guide portion 10. Switch on energy storage device. 6. The catch of claim 5 wherein the catch 14 has an inspection cutout 19, Switch on energy storage device.

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