HK1032094B - Device for triggering a gas spring - Google Patents

Description

The invention relates to a device for triggering a gas spring, with an actuator and an actuator directly connected to the actuator, acting on the end trigger of the gas spring, where the actuator is operated as a lever arrangement that is powered and/or transverse, and where one of the levers presses directly on the trigger.

Gas springs are known from practice in a wide variety of embodiments. Many gas springs include an integrated valve system, which allows the gas spring to be detected or blocked in any position without any step. The piston is sealed on a pressure pipe and separates two gas chambers from each other.

Gas springs of the type described here are used in a variety of ways. It is known from practice that such gas springs are used in desk chairs. Likewise, gas springs can be used to adjust car seats or move parts of solar panels.

The practical use of gas springs requires an actuator which is connected to an actuator and acts directly on the trigger at the end of the gas spring. For example, in the case of desk chairs, actuators are used which are shaped as simple levers which, with an end-point, press directly on the trigger.

A device for the release of a gas spring is known from EP-A-0 549 026, which has all the characteristics of the general concept of claim 1, and the release of the known gas spring is difficult to dose, so that regulation of the gas spring speed at significant release forces is virtually impossible.

The present invention is therefore based on the design and development of a device for the actuation of a gas spring in such a way as to enable simple and safe operation with reduced actuation forces and a continuous regulation of the exit speed and exit position.

The present invention solves the problem mentioned above by the features of the patent claim. (1) A device for the actuation of a gas spring is designed so that the trigger lever is pivoted on one end around a fixed rotating axis and connected at its other end to a second lever-connector lever - at the other end of which the connector lever is pivoted on the other end of which the connector lever is pivoted on the other end of which the lever-connector lever is connected to a third lever-operating lever - and that the actuating lever is pivoted on one end around a fixed rotating axis and connected at its other end to the actuating device.

In particular, the trigger lever is at one end rotatable around a fixed rotation axis and at its other end connected to a second lever connecting lever - at the other end of which rotatable. The connecting lever is at its other end rotatable with a third lever actuating lever - at its other end connected, whereby the actuating lever is at one end rotatable around a fixed rotation axis and at its other end connected to the direction of action of the actuating unit.

In particular, in the case of particularly favourable under- or transition ratios, the lever arrangement includes an adjustment mechanism. In particular, the lever arrangement could include an eccenter, a curved disc or cam or gear or even a gear.

More specifically, the ratio of the lever sections on one side of the trigger lever between fixed rotation axis and trigger and between trigger and rotation link with the connecting lever and on the other side of the actuating lever between fixed rotation axis and rotation link with the connecting lever and between rotation link with the connecting lever and free end or actuation link with the actuating device could determine the degree of sub- or transition.

The control unit could be arranged in a specific way, with the gas spring running alongside it and in a frame adjacent to the trigger, preferably with free-range end-piers for the paired reception of fixed axes.

It is also particularly advantageous if the frame is so sized that it is pushed into a preferably tubular housing together with the gas spring, which could be closed at the free end of the frame by a lid, so that the whole housing is closed - on the actuation side.

As mentioned above, the control device acts on the trigger directly or indirectly via the control organ. In the first design, the control device could act on the control organ electrically, preferably via a miniaturised actuator or stepper motor. In the second design, the control device could act inductively on the control organ. In the third design, the control device could act on the control organ via a magnetic - electrical work lifting or pressure magnet - or in the second design, the control device could act on the control organ by means of a pneumatic or hydraulic actuator. Finally, it would be particularly easy to perform an action on the control organ, especially if the control organ is directed forward by a bow or a pressure magnet.

In the case of a Bowden pull, the pull may be directed at the end of the actuator lever, in the case of pull the actuator lever may be turned towards the trigger, it may pass through the frame, preferably inside the housing past the gas spring, and finally exit the housing at the opposite end of the trigger and finally pass through control elements to the actuator.

The control device may include a lever, button or other device for easy activation. In the case of a bowden pull, the control device may include a lever which holds the bowden pull at the end.

The present invention is now usefully designed and further developed in several ways: firstly, by reference to the claims subordinate to claim 1, and secondly, by reference to the following illustration of an example of the invention by means of the drawing. In conjunction with the illustration of the preferred example of the invention in the drawing, the general preferred extensions and extensions of the invention are also explained.

The figures show a device for the actuation of a gas spring 1 shown here only at the end, which includes an actuator 2 shown here only and an actuator 4 directly connected to the actuator 2 and acting on the trigger 3 at the end of the gas spring 1.

The device is designed to be operated by a lever, which is designed to be used as a lever, and is designed to be operated by a lever, which is designed to be used as a lever, and which is designed to be used as a lever.

Figures 1 and 2 show particularly clearly that the trigger lever 6 is at one end rotatable around a fixed rotation axis and at its other end is connected to a second lever, the so-called connecting lever 8, at the other end of which is rotatable.

The ratio of the lever sections on one side of the trigger lever 6 between fixed axis 7 and trigger 3 and between trigger 3 and the rotary connection with the connecting lever 8 and on the other side of the actuating lever 9 between fixed axis 10 and rotary connection with the connecting lever 8 and between rotary connection with the connecting lever 8 and free end or actuating connection with the actuating device 2 determines the degree of sub- or translation.

The figures show that the entire control 4 is connected to the gas spring 1 and that the control 4 is located in a frame 11 adjacent to the trigger 3.

Together with the gas spring 1, the frame 11 is inserted into a tubular housing 13 which is closed at the free end of the frame 11 by a lid 14.

In the case of the control device, the general description is used to avoid repetition. In the example chosen here, the control device 2 acts on the control organ via a Bowden pull 15 4. The Bowden pull 15 is finally directed to the control lever 9 and swings the control lever 9 - when pulled - in the direction of the trigger 3. The Bowden pull 15 extends through the frame 11 through the housing 13 through the spring 1 and out of the gas outlet 13 on the side opposite or opposite to the trigger 3. Finally, the Bowden pull 15 extends over the only 16 elements shown here for the control of the control, where a type of control can be provided for the control of the control 17.

Finally, it should be noted that the example discussed above is merely a discussion of the claimed theory, but does not limit it to the example.

Claims (16)

1. Apparatus for activating a pneumatic spring (1), having an activation device (2) and an activation member (4), which is actively connected to the activation device (2) and which acts directly on the trigger (3), located at the end face, of the pneumatic spring (1), the activation member (4) being in the form of a lever arrangement (5), which steps down or steps up in terms of power and/or travel, and one of the levers - trigger lever (6) - pressing directly on the trigger (3), characterised in that the trigger lever (6) is articulated at one end pivotably about a stationary pivot axis (7) and, at the other end thereof, is connected pivotably to the end of a second lever - connection lever (8) - ir that the connection lever (8) is connected at the other end thereof pivotably to a third lever - activation lever (9) - and in that the activation lever (9) is articulated at one end pivotably about a stationary pivot axis (10) and, at the other end thereof, is actively connected to the activation device (2).
2. Apparatus according to claim 1, characterised in that the lever arrangement (5) comprises an adjustment mechanism.
3. Apparatus according to claim 1 or claim 2, characterised in that the lever arrangement (5) comprises an eccentric.
4. Apparatus according to claim 1 or claim 2, characterised in that the lever arrangement (5) comprises an eccentric disc or cam.
5. Apparatus according to claim 1 or claim 2, characterised in that the lever arrangement (5) comprises a toothed wheel or a gear.
6. Apparatus according to any one of claims 1 to 5, characterised in that the ratio of the lever portions dictates the magnitude of the stepping-down or stepping-up at one side of the trigger lever (6) between the stationary pivot axis (7) and the trigger (3) as well as between the trigger (3) and the pivot connection to the connection lever (8) and at the other side of the activation lever (9) between the stationary pivot axis (10) and the pivot connection to the connection lever (8) as well as between the pivot connection to the connection lever (8) and the free end or active connection to the activation device (2).
7. Apparatus according to any one of claims 1 to 6, characterised in that the activation member (4) is formed flat in the manner of a flange and has means, which are likewise flat, for attachment to any component.
8. Apparatus according to any one of claims 1 to 7, characterised in that the whole activation member (4) is flush with the pneumatic spring (1).
9. Apparatus according to any one of claims 1 to 8, characterised in that the activation member (4) is arranged in a frame (11), which abuts the trigger (3), the frame (11) being able to comprise a total of four frame supports (12), which run out freely at the end face, for receiving as a pair the stationary pivot axes (7, 10), and being pushed, together with the pneumatic spring (1), into a preferably tubular housing (13) which is closed by a cover (14) preferably at the free end of the frame (11).
10. Apparatus according to any one of claims 1 to 9, characterised in that the activation device (2) acts on the activation member (4) electrically, preferably via a miniature servomotor or stepping motor.
11. Apparatus according to any one of claims 1 to 9, characterised in that the activation device (2) acts inductively on the activation member (4).
12. Apparatus according to any one of claims 1 to 9, characterised in that the activation device (2) acts on the activation member (4) via a magnet, which is an electrically functioning lifting or pressing magnet.
13. Apparatus according to any one of claims 1 to 9, characterised in that the activation device (2) acts hydraulically on the activation member (4).
14. Apparatus according to any one of claims 1 to 9, characterised in that the activation device (2) acts pneumatically on the activation member (4).
15. Apparatus according to any one of claims 1 to 9, characterised in that the activation device (2) acts on the activation member (4) via a sheathed cable or Bowden cable (15), the Bowden cable (15) preferably being articulated to the end of the activation lever (17) and, when pulled, pivoting the activation lever (17) in the direction of the trigger (3), extending through the frame (11), preferably past the pneumatic spring (1) within the housing (13), and finally leading out of the housing (13) at the end opposite the trigger (3) and ultimately extending via guide elements (16) to the activation device (2).
16. Apparatus according to any one of claims 1 to 15, characterised in that the activation device (2) comprises, for activation, a lever, knob, or the like, which receives the end of the Bowden cable (15).