FR3009536A1 - METHOD FOR ROBOTIZED MOUNTING OF TWO PARTS OF A MOTOR VEHICLE, AND PART OF A MOTOR VEHICLE FOR CARRYING OUT SAID METHOD - Google Patents

Abstract

The robotic assembly method of a first part (1) of a motor vehicle on a second part (2) of a motor vehicle, the first part of the vehicle comprising a first element (3) to which is attached a second element (4) which is movable between a waiting position and a final position, comprises the following steps: -Reassembles the first element (3) and the second element (4) by means of a rigid connecting member (8), scoredly supported by the first element of the first part, -mount the first part on the second part, -rompre the connecting member (8).

Description

The present invention relates to a method of robotically mounting two parts of a motor vehicle, and a portion of a motor vehicle for the implementation of a method of robotically mounting two parts of a motor vehicle, and a portion of a motor vehicle for the implementation of the invention. of this process. BACKGROUND OF THE INVENTION It is known that to make a robotic assembly of several parts of a motor vehicle, the parts to be assembled must follow a very precise path. In addition, certain configurations do not make it possible to carry out the robotic assembly with all the elements of a part in their final position. This is particularly the case for mounting on the body of a dashboard assembly including a dashboard, if equipped with an air conditioning unit or other equipment, associated with the steering column. Given the geometry of the dashboard assembly and the body, it is necessary to provide a waiting position of the steering column to allow its engagement in the engine compartment, followed by a tilting to a position definitive to allow its connection to the steering mechanism.

To date, to maintain the mobile element in the waiting position, it is used an elastic but the waiting position obtained is not precise enough for some vehicles for which the positioning tolerance of waiting is very weak.

OBJECT OF THE INVENTION The object of the invention is to propose a mounting method for obtaining a very precise waiting position without penalizing the passage into the final position.

BRIEF DESCRIPTION OF THE INVENTION With a view to achieving this object, the invention proposes a method of robotically mounting a first part of a motor vehicle to a second part of a motor vehicle, the first part of a vehicle comprising a first element to which is attached a second element which is movable between a waiting position and a final position, the method comprising the following steps: -Relier the first element and the second element by means of a rigid connecting member, worn so breakable by the first element of the first part, -monter the first part on the second part, -broody the connecting member. Thus, because of the rigid nature of the connecting member, the waiting position is very precise, and the breaking of the connecting member renders complete freedom to the second element to bring it into the final position. According to an advantageous version of the invention, the method further comprises the step of making the connecting member by molding in one piece with the first element of the first part. The cost of manufacture is thus reduced. According to another advantageous aspect of the invention, the method further comprises the step of producing break primers in the connecting member, prior to establishing the connection between the first element and the second element of the first part. According to still other advantageous aspects of the invention: the rupture primers comprise a weakening of the material constituting the connecting member along a line of separation of the connecting member; the weakening of the material is achieved by recesses. The invention further relates to a motor vehicle part comprising a first element to which is attached a second element which is movable between a waiting position and a final position, in which the first element and the second element are connected by means of a rigid connecting member, scoredly supported by the first element. Preferably, the connecting member comprises rupture primers. Preferably, again, the breaking primers comprise a weakening of the material constituting the connecting member along a line of separation of the connecting member, in particular, the weakening of the material is achieved by recesses. . According to a particular embodiment of the invention, the connecting member has a C shape force-engaged on the second element, the opening of the C being turned in a direction opposite to a direction of movement of the second element to pass from the waiting position to the final position BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the invention will become apparent on reading the following description of a preferred non-limiting embodiment of the invention with reference to the attached single figure which is a very schematic partial perspective view illustrating the mounting method according to the invention. DETAILED DESCRIPTION OF THE INVENTION With reference to the single figure, the invention relates to a method of mounting a first part of a motor vehicle, here a set of dashboard 1, on a second part of a motor vehicle, here the vehicle body symbolized by a wall element 2.

In a manner known per se, the dashboard assembly comprises a first element, here the plank body 3 to which is attached a second element, here the steering column 4 of which a section 5 is connected by a universal joint 6, to a section 7 integral with the board body 3.

The steering column section 4 is thus movable between a waiting position shown in solid lines in the figure and a final position represented by the dashed outline in the figure. According to the preferred embodiment of the invention, the steering column section 5 is connected to the plank body 3 by a flange 8 which is made in one piece with the plank body 3 during the molding thereof by providing in the mold of the board body an additional cavity corresponding to the flange 8. The flange 8 is connected to the board body 3 along an edge which has break primers, here recesses 9 made during the molding of the flange link 8 along a separation line 11. Furthermore, the flange 8 has a C-shaped lateral opening 10 whose dimensions are adapted to that of the steering column section 5 to allow a light force engagement of the section of steering column 5 in the opening 17 of the flange 8 prior to assembly of the dashboard assembly on the body portion 2. Preferably, as shown in the figure, the opening of the C is turned in a direction opposite to a direction of movement of the steering column to move from the waiting position to the final position. Thus, in a step prior to assembly, it is possible robotically to push the steering column into the flange with a moderate force does not cause the rupture of the flange. After assembly of the dashboard assembly on the body part 2, a stronger pressure is exerted on the steering column section 5 in the same direction but with a greater force causing a rupture of the flange 8 along the the separation line 11. Naturally, the invention is not limited to the embodiment described and variations can be made without departing from the scope of the invention as defined by the claims. In particular, although the invention has been described in connection with the mounting of a dashboard assembly on a body part, the method of the invention can be implemented for mounting another part of the vehicle. comprising an element whose position during assembly is different from the position in operation. Although the invention has been described in one embodiment in which the flange connecting the steering column section to the dashboard is an extension of the board body, the rigid connecting member may be located at another location the dashboard assembly, for example on the air conditioning module or other equipment installed in the dashboard assembly prior to implementation of the dashboard assembly on the vehicle body.

Claims (10)

CLAIMS1 A method of robotically mounting a first portion (1) of a motor vehicle on a second portion (2) of a motor vehicle, the first vehicle part comprising a first element (3) to which is attached a second element (4) which is movable between a waiting position and a final position, characterized in that it comprises the following steps: -connects the first element (3) and the second element (4) by means of a rigid connecting member (8) , borne in a breakable manner by the first element of the first part, -monter the first part on the second part, -rompre the connecting member (8). 2. Method according to claim 1, characterized in that it further comprises the step of making the connecting member (8) by molding in one piece with the first element (3) of the first part. 3 Method according to claim 1, characterized in that it further comprises the step of making break primers (9) in the connecting member (8), prior to the establishment of the connection between the first element and the second element of the first part. 4. Method according to claim 2 and claim 3, characterized in that the breaking primers (9) comprise a weakening of the material constituting the connecting member along a line of separation (11) of the organ link. Process according to Claim 4, characterized in that the weakening of the material is achieved by recesses (9). Motor vehicle part comprising a first element (3) to which is attached a second element (4) which is movable between a waiting position and a final position, characterized in that the first element and the second element are connected by means a rigid connecting member (8), scoredably supported by the first element. 7. Part of a motor vehicle according to claim 6, characterized in that the connecting member comprises breaking primers (9). Part of a motor vehicle according to claim 7, characterized in that the breaking primers (9) comprise a weakening of the material constituting the connecting member along a line of separation of the connecting member. 9. part of a motor vehicle according to claim 7 characterized in that the weakening of the material is made by recesses. Part of a motor vehicle according to claim 6, characterized in that the connecting member (8) has a C-shape force-fitted on the second element, the opening of the C being turned in a direction opposite to a direction of rotation. moving the second element to move from the waiting position to the final position.