Pneumatically operated control device for automatic alignment of motor vehicle lights

Claim 2

A pneumatically operating control installation for the automatic alignment of motor vehicle headlights which includes pressure modulator means coordinated to the two axles of the motor vehicle which align the motor vehicle headlights to a constant light distance in dependence on the change of the distance of the respective axle to the body of the motor vehicle by way of a control element, a control shifting device and a working element, and in which the control installation is fed with a vacuum, characterized in that the control element, the control shifting device and the working element are arranged one behind the other in a structural unit consisting of a single housing means closed off on both sides by cover means.

Claim 3

A pneumatically operating control installation for the automatic alignment of motor vehicle headlights which includes pressure modulator means coordinated to the two axles of the motor vehicle which align the motor vehicle headlights to a constant light distance in dependence on the change of the distance of the respective axle to the body of the motor vehicle by way of a control element, a control shifting device and a working element, and in which the control installation is fed with a vacuum, characterized in that the control element, the control shifting device and the working element are arranged one behind the other in a structural unit consisting of a single housing means closed off on both sides by cover means, and in that the housing means is subdivided by a partition wall into two spaces, of which one space for purposes of forming the control element, is subdivided by a first diaphragm means into two chambers connected with a respective pressure modulator means, and in which the other space, for the purposes of forming the working element is also subdivided into two further chamber means by a further diaphragm means which carries out the alignment of the headlights by way of a piston rod means, one of the two further chamber means being in communication with the atmosphere and the other being adapted to be connected by way of the control shifting device either with a vacuum source or with the atmosphere.

Claim 4

A pneumatically operating control installation for the automatic alignment of motor vehicle headlights which includes pressure modulator means coordinated to the two axles of the motor vehicle which align the motor vehicle headlights to a constant light distance in dependence on the change of the distance of the respective axle to the body of the motor vehicle by way of a control element, a control shifting device and a working element, and in which the control installation is fed with a vacuum, characterized in that the control element, the control shifting device and the working element are arranged one behind the other in a structural unit consisting of a single housing means closed off on both sides by cover means, and in that the housing means is subdivided by a partition wall into two spaces, of which one space for purposes of forming the control element, is subdivided by a first diaphragm means into two chambers connected with a respective pressure modulator means, and in which the other space, for the purposes of forming the working element is also subdivided into two further chamber means by a further diaphragm means which carries out the alignment of the headlights by way of a piston rod means, one of the two further chamber means being in communication with the atmosphere and the other being adapted to be connected by way of the control shifting device either with a vacuum source or with the atmosphere.

Claim 5

A control installation according to claim 2, characterized in that the control shifting device includes a shifting pin means operatively connected with the diaphragm means of the control element and extending through the partition wall, and a valve means controlled by the shifting pin means and including the further diaphragm means of the working element.

Claim 6

A control installation according to claim 3, characterized in that the valve means includes two valve seats adapted to be alternately opened or closed in dependence on the position of the shifting pin means, one of said valve seats in the open position of the valve means operatively connecting the further chamber means connected with the atmosphere with the other further chamber means, and the other valve seat connecting said other further chamber means with a hollow space in the piston rod means which is in communication with the vacuum source.

Claim 7

A control installation according to claim 4, characterized in that the diaphragm means separating the chamber means of the control element is contructed double-walled between the clamping places radially inwardly and radially outwardly thereof and the space between the walls of the doublewalled construction is connected with the atmosphere.

Claim 8

A control installation according to claim 5, characterized in that the cover means of the housing means closing off the control element forms in its central area a ball socket.

Claim 9

A control installation according to claim 6, characterized in that the piston rod means is provided with a ball socket.

Claim 10

An installation according to claim 7, characterized in that the housing means, its two cover means and the piston rod means together with its ball socket consist of synthetic plastic material.

Claim 11

A control installation according to claim 2, characterized in that the diaphragm means separating the chamber means of the control element is constructed double-walled between the clamping places radially inwardly and radially outwardly thereof and the space between the walls of the double-walled construction is connected with the atmosphere.

Claim 12

A control installation according to claim 2, characterized in that the piston rod means is provided with a ball socket.

Claim 13

An installation according to claim 2, characterized in that the housing means, its two cover means and the piston rod means together with its ball socket consist of synthetic plastic material.

Claim 14

A pneumatically operating control installation for the automatic alignment of motor vehicle headlights which includes pressure modulator means coordinated to the two axles of the motor vehicle which align the motor vehicle headlights to a constant light distance in dependence on the change of the distance of the respective axle to the body of the motor vehicle by way of a control element, a control shifting device and a working element, and in which the control installation is fed with a vacuum, characterized in that the control element, the control shifting device and the working element are arranged one behing the other in a structural unit consisting of a single housing means closed off on both sides by cover means, and in that the cover means of the housing means closing off the control element forms in its central area a ball socket.

Claim 15

A pneumatically operating control installation for the automatic alignment of motor vehicle headlights which includes pressure modulator means coordinated to the two axles of the motor vehicle which align the motor vehicle headlights to a constant light distance in dependence on the change of the distance of the respective axle to the body of the motor vehicle by way of a control element, a control shifting device and a working element, and in which the control installation is fed with a vacuum, characterized in that the control element, the control shifting device and the working element are arranged one behing the other in a structural unit consisting of a single housing means closed off on both sides by cover means, and in that the cover means of the housing means closing off the control element forms in its central area a ball socket.