Support device for supporting a motor vehicle headlamp attitude corrector

Abstract

The invention relates to a support device for supporting a correction member for correcting the attitude of a motor vehicle headlamp housed in a housing (B), said correction member comprising an internal motor (M) mounted mobile with respect to said housing and moved by a worm (F) integral with said housing, characterized in that it comprises a first part (1) fixed to said housing (B) and bearing said worm (F) and a second part bearing said internal motor (M) and coupled to said first part by an elastically deformable gasket (3) allowing the longitudinal movement of said motor (M) in said housing (B) under the action of said worm (F).

Description

TECHNICAL FIELD

[0001] The present application claims priority from French application 1911829 filed on October 23, 2019, the content of which (text, drawings and claims) is incorporated herein by reference. The present application applies to the handling of motor vehicle lighting and signaling modules.

[0002] The present application applies to the field of adjustment for regulating a motor vehicle headlamp.

[0003] More particularly, the present application relates to a support device for supporting a correction member of a light beam emitted by a headlamp, said correction member being intended to perform a correction of the assiette of this light beam in order to comply with the required regulatory lighting provisions, thereby avoiding dazzling other road users. BACKGROUND

[0004] Conventionally, the adjustment member for equipping a motor vehicle headlamp comprises, on the one hand, mechanical members provided with a worm capable of recentering the nominal orientation of the light beam during technical control, and on the other hand, an electric motor ensuring the correction of the assiette of the headlamp.

[0005] This engine is generally fixed inside the housing of said headlamp, in order to limit the number of connectors in the environment of said vehicle, the access to which is generally very constrained.

[0006] Said engine is fitted on a support coupled with said housing via a sliding rail, while the worm ensuring the mechanical adjustment of the headlamp is fitted between said housing and said support and capable of moving the support / engine combination.

[0007] However, this configuration requires constraining said worm in order to avoid said support from arc-bouting in the sliding rail, which makes the adjustment difficult. This constraint on the screw results in the addition of a number of angle reversing links, in the hope of shifting the adjustment zone into an accessible part of said vehicle, but this shift disadvantageously increases the overall size of said headlamp.

[0008] In addition, said sliding rail has a fitting clearance which generates vibrations in the connection between the engine support and said housing, and thus parasitic noise and light beam flickering.

[0009] Moreover, the possible compensation for these clearances, implemented by deformable contacts, implies complex adjustments due to the appearance of friction, and causes difficulties for actuating the adjustment screws.

[0010] Patent FR 3022984 B1 describes an adjustment device for adjusting the inclination of a reflector of a lighting module, said adjustment device comprising, on the one hand, a sliding block sliding in said housing, said sliding block being intended to support a fixed member of said reflector, and, on the other hand, dynamic and static adjustment means for adjusting the longitudinal position of this support block, said dynamic and static adjustment means being able to ensure the translational movement of this support block along two separate and parallel axes, respectively.

[0011] However, this device does not provide or suggest a solution to the technical problem of the risk of seizure of the support element or of the internal motor in the connecting slide rail with the housing.

[0012] In this context, the present invention proposes to solve the technical problems mentioned above, while dispensing with the presence of a connecting rod and of a slide rail by replacing them with a deformable zone located between the worm and the internal motor, so as to thereby avoid any seizure constraint at the connection of said motor with said housing. SUMMARY

[0013] This object is achieved by means of a support device for supporting a correction member for correcting the attitude of a headlight of a motor vehicle, said correction member comprising an internal electric motor fitted mobile with respect to said housing and moved by a worm connected integrally with said housing, characterized in that said support device comprises a first part fixed on said housing and bearing said worm, and a second part bearing said internal motor and coupled with said first part by means of an elastically deformable gasket, said gasket allowing the longitudinal movement of said motor in said housing under the action of said worm.

[0014] According to an advantageous feature, said first part comprises a bracket bearing, on the one hand, the head of said worm and, on the other hand, a fixed member fixed with said housing.

[0015] According to a particular variant, said bracket is prolonged at its lower end with a substantially horizontal beam, said beam being joined with said gasket and bearing a complementary fixed member fixed with said housing.

[0016] According to another feature, said gasket comprises at least one vertical tab joined by its lower end with the first part bearing said worm and by its upper end with the second part bearing said motor.

[0017] According to a preferred variant, said gasket comprises two vertical tabs, each of said two vertical tabs being made up of a central raidisseur and of two flexible sheets of lower and upper ends.

[0018] According to another particular variant, it is provided that the second portion is supported by the gasket.

[0019] Preferably, the rear duct of the mandrin is laterally offset with respect to the front aperture.

[0020] According to another particular variant, it is provided that the second portion is supported by the gasket.

[0021] Preferably, the second portion comprises a suspension member for suspending the engine.

[0022] Another object of the application is to provide a motor vehicle equipped with a headlamp equipped with a support device for supporting a posture correction member having the above-mentioned characteristics.

[0023] The device of the application is particularly compact and makes it possible to reduce the size of the headlamp module while providing greater freedom of positioning and access to the posture correction and adjustment member.

[0024] The device is simple in structure since it comprises only one part, the two portions being manufactured by co-moulding.

[0025] The device provides greater reliability since it makes it possible to avoid the risk of jamming and biting due to the friction previously present in the sliding connection by rail between the engine support and the housing.

[0026] Furthermore, the device of the application has economic benefits since it makes it possible to dispense with the use of a connecting rod to offset access to the adjustment screw.

[0027] The ergonomics and quality of the headlamp are thus improved, while assembly and maintenance operations are greatly facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0028] Other characteristics and advantages of the application will become clear on reading the following detailed description and on examining the attached drawings, among which:

[0029] - Figure 1 is a perspective view of an embodiment of a support device for supporting a posture correction member according to the application.

[0030] - Figure 2 is Figure 1 a side view of an embodiment of the device of the application, in which the engine is shown in the retracted position in solid lines and in the advanced position in dashed lines.

[0031] For greater clarity, identical or similar elements are denoted with the same reference numerals throughout the figures. DETAILED DESCRIPTION

[0032] Naturally, the embodiments of the method of the application illustrated by the above figures and described hereinafter are given solely as non-limiting examples. It is explicitly contemplated that different embodiments can be provided and combined between these different embodiments.

[0033] The device of the application is intended to provide a support for supporting an adjustment member for adjusting a motor vehicle headlamp, and more precisely for adjusting the orientation of the light beam emitted by this headlamp by correction of the attitude of this headlamp.

[0034] This adjustment is generally performed by means of an electric member consisting of an electric motor which moves a mechanical member consisting of a worm which is integral with the housing.

[0035] The worm ensures mechanical adjustment by recentering the nominal orientation of the light beam, for example during a technical control, while the electric motor ensures electrical adjustment for correcting the attitude of the headlamp.

[0036] The worm which ensures mechanical adjustment is fitted between the housing and the engine support and makes it possible to move the support / engine combination which is fitted to be mobile inside the housing in order to limit the number of connectors in the environment of the vehicle, access to which is generally very restricted.

[0037] Since the conventional devices encounter problems of friction and jamming when the electric motor is moved by the worm, the application aims to modify the structure of the internal support device for supporting the adjustment member of the headlamp.

[0038] To this end, as shown in Figure 1 and Figure 2 the support device of the application comprises a first part 1 which is fixed on the housing B and which bears the worm F, and a second part 2 which bears the internal engine M. The second part 2 is coupled to the first part 1 by means of an elastically deformable gasket 3 which allows the engine M to move longitudinally relative to the housing B under the action of the worm F.

[0039] The first part 1 comprises a bracket 11 which bears, on the one hand, the head T of the worm F on which the operator exerts an action using a tightening tool (not shown) and, on the other hand, a fixing member which is fixed to the housing, here in the form of a screw S1.

[0040] The bracket 11 is prolonged at its lower end with a substantially horizontal beam 12 which is joined with the spacer 3 and supports a complementary fixing member (here also in the form of a screw S2) fixed with the casing.

[0041] The spacer 3 comprises at least one vertical tab, in the embodiment shown on these figures, two identical and parallel tabs 31, 32, which are joined by a respective lower end with the first portion 1 supporting the worm F and by a respective upper end with the second portion 2 supporting the engine M.

[0042] Each of the vertical tabs 31, 32 is composed of a central stiffener 31a, 32a and two flexible tabs 31b, 32b extending between the two stiffeners 31a, 32a and their respective lower and upper ends. The stiffeners 31a, 32a here have the same width as the tabs 31b, 32b but a greater thickness. They also have axial reinforcing ribs 310, 320. Figure 1

[0043] The second portion 2 itself comprises a mandrel 21 provided with a front aperture 20 receiving the shaft A of the engine M and a rear threaded conduit 22 receiving the threaded rod E of the worm F.

[0044] The second portion 2 is supported by the spacer 3 which, thanks to the presence of the stiffeners 31a, 32a, has sufficient rigidity in the vertical direction. Thus, the engine M is assembled suspended on the second portion, while the shaft A in particular, housed by it through the aperture 20, is held (as Figure 2 shown) and, if necessary, by complementary parts (not shown).

[0045] Preferably, the rear conduit 22 of the mandrel 21 is laterally offset on the second portion 2 with respect to the front aperture 20 to balance the action of the worm F during adjustment.

[0046] Rotation of the head T of the worm F in one direction or the other causes the threaded rod E to move translationally in the conduit 22 and, by pushing, to move the mandrel 21 and the shaft A of the engine M forward (as shown by the dotted lines and arrows on Figure 2 ) or backward (as shown by the solid lines on the same figure).

[0047] This movement jointly causes elastic deformation of the tabs 31, 32, and more particularly of the tabs 31b, 32b, of the spacer 3, which bend from back to front or from front to back with the movement of the second portion 2.

[0048] ​In this phase, the stiffeners 31a, 32a, which have a greater thickness than the sheets 31b, 32b and have axial stiffening ribs 310, 320, are subjected to little or no deformation, which ensures the movement of the shaft A along an axis that is substantially longitudinal.

Claims

1. A support device for supporting a correction member for correcting the attitude of a motor vehicle headlamp housed in a casing (B), said correction member comprising an internal electric motor (M) mounted mobile with respect to said casing and moved by a worm (F) integral with said casing, characterized in that, The support device comprises a first portion (1) fixed to the casing (B) and supporting the worm (F) and a second portion supporting the internal motor (M) and coupled with the first portion by means of an elastically deformable gasket (3) which allows the internal motor (M) to move longitudinally in the casing (B) under the action of the worm (F), and the gasket (3) comprises at least one vertical tab (31, 32) joined by a lower end to the first portion (1) supporting the worm (F) and by an upper end to the second portion (2) supporting the internal motor (M).

2. The support device of claim 1, wherein, The first portion (1) comprises a bracket (11) supporting, on the one hand, the head (T) of the worm (F) and, on the other hand, a fixed member (S1) fixed to the casing (B).

3. The support device of claim 2, wherein, The bracket (11) extends at a lower end thereof a substantially horizontal beam (12) joined to the gasket (3) and supporting a complementary fixed member (S2) fixed to the casing (B).

4. The support device of claim 3, wherein, The gasket (3) comprises two vertical tabs (31, 32) each consisting of a central stiffener (31a, 32a) and two flexible sheets (31b, 32b) of lower and upper ends.

5. Support device according to any of the preceding claims, characterized in that The second portion (2) comprises a mandrel (21) provided with a front aperture (20) receiving the shaft (A) of the internal motor (M) and a rear threaded duct (22) receiving the threaded rod (E) of the worm (F).

6. The support device of claim 5, wherein, The rear duct (22) of the mandrel (21) is laterally offset with respect to the front aperture (20).

7. The support device according to any one of claims 1 to 3 and 6, characterized in that, The second portion (2) is supported by the gasket (3).

8. The support device according to any one of claims 1 to 3 and 6, characterized in that, The second portion (2) comprises a suspension member for suspending the internal motor (M).

9. Motor vehicle equipped with a headlamp fitted with a support device for supporting a posture correction member according to any one of the preceding claims.

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