GB2109528A - A pneumatic control apparatus for the automatic lamp vertical aim actuation of motor vehicle headlamps - Google Patents
A pneumatic control apparatus for the automatic lamp vertical aim actuation of motor vehicle headlamps Download PDFInfo
- Publication number
- GB2109528A GB2109528A GB08228683A GB8228683A GB2109528A GB 2109528 A GB2109528 A GB 2109528A GB 08228683 A GB08228683 A GB 08228683A GB 8228683 A GB8228683 A GB 8228683A GB 2109528 A GB2109528 A GB 2109528A
- Authority
- GB
- United Kingdom
- Prior art keywords
- modulator
- valve member
- control
- chamber
- function generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
- B60Q1/10—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to vehicle inclination, e.g. due to load distribution
- B60Q1/105—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to vehicle inclination, e.g. due to load distribution by fluid means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
A modulator (10) has a double seat valve (16/21/22) which connects from time to time a control pressure chamber (23) to a suction duct (16) or to an atmospheric chamber (24). By inserting a rolling diaphragm (41) in the modulator (10) an additional chamber (42) is formed with respect to the atmospheric chamber (24). The effective area of the section of the valve member (17') closing the additional chamber (42) is half that of the section of the valve member (17) closing the control pressure chamber (23). The modulator (10) and the double function generator (40) are of identical construction and the modulator (10) can be changed into the double function generator (40) by the insertion of the rolling diaphragm (41). (Figure 3). <IMAGE>
Description
SPECIFICATION
A pneumatic control apparatus for the automatic lamp vertical aim actuation of vehicle headlamps
State of the Art
The invention originates from a pneumatic control apparatus for the automatic lamp vertical aim actuation of motor vehicle headlamps according to the preamble to the main claim. It is already known from German OS 29 25 710 to integrate the correction element in a linkage which transmits the axle movements to the associated moduTator. Furthermore, it is proposed to combine the modulator and the correction element into one unit whereby the switching movements of the correction element are transmitted directly to the attached modulator.
The first named arrangement of a double function generator consisting of the modulator and the correction element, indeed has the advantage that the modulators for both axles are the same, however, a separate component in the form of a correction element is required. The unit of the second named arrangement indeed includes the modulator but is a constructional unit in itself.
Advantages of the Invention
Manufacture and stock keeping is considerably simplified with the pneumatic control apparatus according to the invention due to the fact that the modulator and the double function generator differ by only one component and all other parts are identical.
Advantageous further developments of the invention are described in the sub claims. A more reliably operating arrangement is proposed by the control apparatus according to claim 2. The development according to claim 3 and in particular according to claim 4 is a diaphragm fixing of simpler construction and acting more reliably as regards its function. A simple association of the forces occurring and the passage of the elements performing a stroke, is provided by the development of the device according to claim 11.
Drawing
An embodiment of the invention is illustrated in the drawing and is explained in detail in the following description. On an enlarged scale,
Figure 1 shows a side view of a modulator in partial section; Figure 2 is the section through the modulator according to the section line Il-Il in
Figure 1; Figure 3 is a longitudinal section through a double function generator; and Figure 4 is the circuit diagram of a pneumatic control apparatus for the automatic lamp vertical aim control for motor vehicle headlamps.
Description of the Embodiment
In Figures 1 and 2, a modulator 10 has a potlike housing 11 with one open end 12 and a cover 1 3 provided with a suction duct 1 6 coaxial with respect to the stroke axis 1 5 and which can be fixed in a locking manner in the region of the end 12. A two-part valve member 17, 17' is axially guided in the housing 11 along the stroke axis 1 5 and secures an inner collar 19 of a rolling diaphragm 1 8 the outer collar 20 of which is fixed to the housing 11 and which has a closure member 21 coaxial with respect to the stroke axis
1 5. Together with the cover 13, the part 1 7 df the valve member forms an annular opening 22.The suction duct 16, the annular opening 22 and the closure member 21 form a double seat valve which, in the illustrated closed position, isolates a control pressure chamber 23 from an atmospheric chamber 24 provided with a connecting union 25.
The control pressure chamber 23 has a connecting union 34.
An eccentric shaft 26 arranged perpendicularly with respect to the stroke axis 1 5 acts on a control piston 27 which is connected to the valve member
17' by a control spring 28. A compensating spring 29 is inserted between the base of the housing 11 and the valve member 1 7' and from which a guide pin 30 projects in the direction of its stroke which is guided in a guide sleeve 31 in the housing 11. A further connecting union 32 provided with a plug 33 is arranged in the lower region of the housing 11.
A double function generator 40 in Figure 3 has substantially the same construction as the above described modulator 10 so that like parts have like references. The modulator 10 can be changed into the double function generator 40 by the insertion of only one seal formed as a rolling diaphragm 41.
In that way, an additional chamber 42 closed with respect to the atmospheric chamber 24 is formed and the valve member 1 7, 1 7' acts as a simple adjusting motor.
The fixing of the rolling diaphragm 41 to a shoulder 45 arranged axially with respect to the stroke axis 1 5 is effected by means of a clamping ring 43 and to a shoulder 47 on the valve member
17', likewise arranged axially with respect to the stroke axis 15, is effected by means of a sleeve 46. Moreover, the clamping ring 43 latches in a groove 48 in the valve member 17' and a projection 49 on the sleeve 48 latches in a recess
50 in the inner wall of the housing 11.
The effective area of the section of the valve member 17' closing the additional chamber 42 is half the effective area of the section of the valve member 17 which closes the control pressure chamber 23. The adjusting force of the control spring 28' of the double function generator 40 is half the adjusting force of the control spring 28 of the modulator 10.
Figure 4 shows a pneumatic control apparatus for the automatic lamp vertical aim control for
motor vehicle headlamps comprising a first and second headlamp 60, the refiector 61 of which is pivotable in a vertical direction about an axis 62
by the piston 64 of an adjusting motor 63. The adjusting motor 63 is single acting and its
pressure chamber 65 is connected through a line
66 to the connecting union 34 of the double function generator 40. A connecting union 14 of the modulator 10 and of the double function generator 40 are connected through a line 67 to a storage tank 68 connected by a non-return valve 69 to the inlet manifold 70 of a vehicle engine (not shown). Moreover, a line 71 connects the connecting union 34 of the modulator 10 to the connecting union 32 of the double function generator 40. A line 72 connects the connecting union 25 of the modulator 10 and that of the double function generator 40 to a filter 73.
The eccentric shaft 26 of the double function generator 40 is hinged to the forward axle 75 by a linkage 74 and in the same manner the eccentric shaft 26 of the modulator 10 is hinged to the rear axle 76 of the vehicle.
Claims (10)
1. A pneumatic control apparatus for the automatic lamp vertical aim actuation of motor vehicle headlamps comprising a first modulator
associated with one vehicle axle and which controls an adjusting pressure for the adjusting
motor of each one of the headlamps
corresponding to the suspension of the associated axle, and comprising a double function generator
consisting of a second modulator and a correction
element and which varies the adjusting pressure
according to the respective suspension conditions,
characterised in that, the modulator (10) and the
double function generator (40) are of substantially the same construction and that the modulator (10) can be changed into a double function generator
(40) by inserting only one seal (41),
2.Apparatus according to claim 1, the
modulator of which is a double seat valve and the
correction element of which is a single acting
adjusting motor comprising an additional
chamber, characterised in that, the seal is formed
as a rolling diaphragm (41) closing the additional
chamber (42).
3. Apparatus according to claim 2,
characterised in that, at its open end (12) a
housing (11) accommodates the double seat valve (16, 21, 22) which from time to time connects a
control pressure chamber (23) to a negative
pressure source (70) or connects the control
pressure chamber (23) to an atmospheric -chamber (24) and that the fixing of the rolling diaphragm (41) is produced in the first place by means of a sleeve (46) against a shoulder (45) on the inner wall of the housing (11) and in the second place by means of a clamping ring (43) against a shoulder (47) on the valve member 7').
4. Apparatus according to claim 3, characterised in that, the fixing of the sleeve (46) on the inner wali of the housing (11) and the fixing of the clamping ring (43) to the valve member (17') is produced by a respective locking arrangement.
5. Apparatus according to claim 3 or 4, characterised in that, valve member (17') is actuable by a control piston through a control spring (28) and that an eccentric shaft (26) acts on the control piston and imparts to the control piston a stroke corresponding to the suspension of the associated axle (75, 76).
6. Apparatus according to one of claims 2 to 5, characterised in that, a compensating spring (29) is arranged in the additional chamber (42) and is supported on the one hand by the base of the housing (11) and on the other hand by the valve member (1 7').
7. Apparatus according to claim 6, characterised in that, a guide pin (30) projects outwardly from the valve member (17') and in the direction of its stroke the guide pin being guided in a guide sleeve (31) projecting from the base of the housing (11).
8. Apparatus according to one of claims 4 to 7, characterised in that, the effective area of the section of the valve member (17) closing the additional chamber (42) is half the effective area of the section of the valve member (1 7) which closes the control pressure chamber (23).
9. Apparatus according to one of claims 4 to 8, characterised in that, the force of the control spring (28') of the double function generator (40)
is half the force of the control spring (28) of the
modulator (10).
10. A pneumatic control apparatus for the
automatic lamp vertical aim actuation of motor
vehicle headlamps substantially as herein described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813144249 DE3144249A1 (en) | 1981-11-07 | 1981-11-07 | PNEUMATIC CONTROL DEVICE FOR THE AUTOMATIC LUMINAIRE OPERATION OF MOTOR VEHICLE HEADLIGHTS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2109528A true GB2109528A (en) | 1983-06-02 |
| GB2109528B GB2109528B (en) | 1985-03-20 |
Family
ID=6145842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08228683A Expired GB2109528B (en) | 1981-11-07 | 1982-10-07 | A pneumatic control apparatus for the automatic lamp vertical aim actuation of motor vehicle headlamps |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE3144249A1 (en) |
| GB (1) | GB2109528B (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2925710A1 (en) * | 1979-06-26 | 1981-01-22 | Daimler Benz Ag | PNEUMATICALLY WORKING CONTROL DEVICE FOR THE AUTOMATIC ALIGNMENT OF MOTOR VEHICLE HEADLIGHTS |
-
1981
- 1981-11-07 DE DE19813144249 patent/DE3144249A1/en active Granted
-
1982
- 1982-10-07 GB GB08228683A patent/GB2109528B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE3144249C2 (en) | 1989-04-06 |
| DE3144249A1 (en) | 1983-05-19 |
| GB2109528B (en) | 1985-03-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19951007 |