| 摘要 |
A restoring device for an adjusting element, which serves in particular for restoring a throttle device of an internal combustion engine. The restoring device has a first spring subject to bending, which is disposed on a bushing that is rotatably supported about a throttle valve shaft and with one end engages a step of the bushing, while the other end of the spring is hooked onto the housing on the throttle valve fitting. A lever is connected with the shaft. The first spring subject to bending acts in the restoring direction of the throttle valve. A second spring subject to bending is disposed in the bushing, one end of this spring engaging the bushing and the other end being supported on the lever. The spring force of the second spring subject to bending is less than that of the first such spring, so that the bushing, with a stop step, is rotated so far that the second spring has not influence in the restoring direction upon the throttle valve. If the first spring should break, the second spring rotates the bushing, with the stop step, until such time as the stop step comes to rest on a stop face of the throttle valve fitting and the second spring subject to bending now acts upon the lever in the restoring direction.
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