FR3072923B1 - SAFETY TRAVERSE FOR A VEHICLE - Google Patents

Abstract

Safety cross member (20) for attaching a removable child seat to a vehicle, said crossbar (20) being provided with at least one attachment element (100) adapted to attach a cable portion (30) to said safety crossbar (20), the fastening element (100) comprising a first surface (101) provided with attachment means for attaching said cable portion (30) to said fastening member characterized in that the fastening element (100) further comprises a second surface (102) adhesively attached to said security crossbar (20).

Description

BACKGROUND OF THE INVENTION The present invention generally relates to a safety cross member for attaching a removable child seat to a motor vehicle as well as securing portions of cable.

Modern motor vehicles include more and more cables for providing comfort or security functions, and it is necessary to attach to the various elements of the motor vehicle.

Thus, it is known in the prior art seating elements provided with perforations for receiving conical fasteners elements or fir foot for attaching one or more portions of cables on said seat member. WO2011 / 145587 discloses such a seat member.

[0004] The seats of modern vehicles are also provided with a safety cross member located between the seat and the chassis of the vehicle and intended to attach a removable child seat to the chassis of the vehicle. This safety rail is often located in the vicinity of one or more portions of cable of the vehicle which must then be attached thereto. However, the use of conical fasteners according to the state of the art requires the costly realization of a large number of perforations to adapt to the different portions of cables required by each finish or equipment of a model of vehicle.

This multiplication of perforations could lead to a degradation of the mechanical strength of the safety cross member and a degradation of the electrical harness, that is to say, a tendency of the cables to cross, to overlap or be placed near potentially cutting portions of the vehicle.

An object of the present invention is to meet the disadvantages of the document of the prior art mentioned above and in particular to allow easy assembly of a portion of cable on a security rail without compromising its level of safety. safety and maintaining a high level of electrical harness hygiene.

For this a first aspect of the invention relates to a safety cross member for fixing a removable child seat to a vehicle, said cross member being provided with at least one fastening element adapted to attach a portion of cable on said security rail, the attachment member comprising a first surface provided with attachment means for attaching said cable portion to said attachment member characterized in that the attachment member further comprises a second surface adhesively secured to said security rail.

A security cross member provided with such an attachment element makes it possible to fix different portions of cables flexibly and optimally, that is to say by attaching each portion of cable to an ideal location, without depending on predefined positions on the crossbar safety, which allows to use the same security crosspiece for several models or finishes of vehicles. In addition, no perforation is necessary which simplifies the manufacture of the security rail and preserves its mechanical strength.

Advantageously, said second surface of the fastener element is fixed at a distance from an edge or a fold formed in the security crossbar, said distance being less than 20 mm, preferably less than 10 mm and more preferably approximately twice the thickness of the sheet forming said safety cross member. This makes it possible to attach a portion of cable to a location that is unsuitable for perforation and / or punching and thus to fasten a portion of cable to the crossbar with a high degree of flexibility.

Advantageously, the fastening means of the fastening element comprises at least one flexible tab connected to the first surface so as to define an acute angle with the first surface, a cable portion can then be attached or housed easily between the flexible tab and said first surface.

Advantageously, the attachment means comprises at least two flexible tabs facing each other and defining an acute angle with said first surface. The two flexible tabs and the first surface define for example a central space for attaching or housing a portion of cable.

[0012] Especially advantageously, the at least one flexible lug comprises a body connected to the first surface by a foot and an end opposite the first surface, the end defining an angle with the body so as to be oriented towards the first surface, the angle being for example equal to or less than 90 °. Each flexible tab thus forms a hook making it possible to prevent a portion of cable attached to said fastener element from escaping, that is to say from detaching itself from the fastening element and therefore from the security cross member, by example under the effect of shocks or vibrations during the driving of the vehicle.

Advantageously, a minimum distance between the end and the first surface is configured to be less than or equal to a diameter of said portion of cable, this in order to slightly pinch the cable and to prevent the portion of cable is s escapes from said fastener.

[0014] Especially advantageously, the foot of the flexible tab near the first surface comprises a thickness less than the average thickness of said body of the flexible tab.

A second aspect of the invention is a motor vehicle comprising a safety cross member according to the first aspect of the invention.

A final aspect of the invention is a method of mounting a vehicle according to the second aspect of the invention comprising the steps of: -providing at least one safety rail, -fix the at least one cross member safety device to the chassis of the vehicle, adhesively attaching the at least one fastening element to the at least one safety cross member.

Such a method is easily adaptable for any type of motor vehicle model or finish, since no predefined location or perforation is required on said crossmember, which allows the use of a less expensive security crossmember because without perforation for a large number of models or different finishes.

Advantageously, the at least one attachment element is previously attached to a cable portion, which simplifies the manipulations performed by an operator in a vehicle being assembled.

Other features and advantages of the present invention will appear more clearly on reading the following detailed description of an embodiment of the invention given by way of non-limiting example and illustrated by the accompanying drawings, in which: FIG. 1 represents a schematic side view of a vehicle rear seat comprising a security cross member according to the present invention, FIG. 2 represents a front view of a security cross member according to FIG. 1, such that view of a vehicle passenger compartment, Figure 3 shows a fastener element according to the present invention.

Figure 1 shows a view of a rear portion of a vehicle frame 1 on which is disposed a rear seat 10. The rear seat 10 comprises a seat 11 and a backrest 12. Between the backrest 12 and the frame 1 is a safety cross member 20 (see also Figure 2). This safety cross member 20 for example meets the ISOFIX standard according to ISO 13216-1: 1999 and is provided with welded hooks 21 for fixing a removable child seat to the vehicle. It may for example be fixed on studs of frame 1 (not shown) or may be riveted or welded to frame 1.

[0021] Figure 2 shows the safety cross member 20 as it is in a motor vehicle, including cables and connectors passing close. Thus, a cable portion 30 is attached to the cross member 20 by a fastener 100 according to the present invention. For example, this portion of cable 30 can be used to supply or connect a seat heating element, a user's presence sensor or an element of the infotainment system of the vehicle.

Figure 3 shows a fastening element 100 according to the present invention, comprising a first circular surface 101 provided with two flexible tabs 110. Each flexible tab 110 is provided with a body 111 forming an acute angle, for example lower at 50 ° with the first surface 101, an end 112 opposite the first surface 101 and forming an angle of about 90 ° with the body 111, d of a foot 113 connecting the body 111 to the first surface 101. The foot 113 has a section refined with respect to the body 111 so as to allow a flexion, that is to say a movement of the body 111 and the end 112 relative to the first surface 101 thanks to the elasticity of the polymeric material in which the fastening member 100 is made. In other words, the foot 113 of the flexible tab 110 near the first surface 101 comprises a thickness less than the average thickness of said flexing tab. 110.

The two flexible tabs 110 face one another so that the two bodies 111 and the two ends 112 define with the first surface 101 a central space C intended to receive a portion of cable 30.

The two flexible tabs 110 thus serve as attachment means for said cable portion 30. The hook shape given by the ends 112 forming an angle of about 90 ° or less with the respective creps 111 to prevent the portion of cable 30 to escape from the central space C. For example, the central space C comprises a minimum diameter, that is to say a minimum distance between the end 112 of a flexible tab 110 and the first surface 101 equal to or smaller than a diameter of the cable portion 30.

Finally, the second surface 102 of the fastening element 100 comprises an adhesive layer 120 intended to be fixed on the crossbar 20, as shown in Figure 2. The type of material of the adhesive layer n is not limited and may be cyanoacrylate or epoxy type as known to those skilled in the art.

Thus, during assembly of the vehicle in the factory, the safety cross member 20 is supplied to an operator and fixed to the chassis of the vehicle 1, for example on studs (not shown) of the frame 1. In parallel or previously one or more fastening elements 100 have been nested or clipped onto one or more cable portions 30, for example by presenting each cable portion 30 between the two flexible tabs 110 of a fastening element 100 and pressing the portion of cable 30 so as to bend the flexible tabs 110 and to pass the portion of cable 30 in the central space C. An operator can then attach the cable portion 30 to the crossbar security 20 by fixing the layer adhesive 120 of each of the fastening elements 100 to a portion of the crossmember 20 with the help of eg a template or benchmarks specific to the finish or the options of the vehicle model c assembly bear.

In this way, the fastener elements may be arranged at a distance from any element that may deteriorate the cable portion but also portions of the cross member that are not easily perforable or punchable, such as edges or edges. folds of the cross. For example, the fastening members 100 may be disposed at a distance from a fold or edge of the security rail 20 less than 20 mm, or less than 10 mm or even twice the thickness of the sheet metal forming the safety rail. This therefore gives an optimal flexibility during the assembly operation of or portions of cable to the cross security.

Thus, because it is not necessary to perform perforations in the cross member 20, different cable portions corresponding to different finishes or options can be easily attached to the crosshead without degrading the mechanical strength. of the cross-member and preserving a high level of electrical harnessing, that is to say, by preventing the different portions of cables from crossing one another, of superimposing it or coming into contact with cutting portions of the cross-member 20.

It will be understood that various modifications and / or improvements obvious to those skilled in the art can be made to the various embodiments of the invention described in the present description without departing from the scope of the invention. In particular, reference is made to the shape of the fastener element 100 which is not necessarily circular but may have a first and a second surface 101, 102 of any geometry. In addition, the fastening means of the fastening element 100 is not limited to two flexible tabs 110 but may comprise from one to several flexible tabs of any appropriate geometry, for example comprising a body and / or a curved end. Alternatively, any other form of fastening means adapted to hang a portion of cable 30 may be employed. Finally, the security rail 20 is not limited to a cross member as shown in the figures but can take any suitable form, including a shape in two separate elements.

Claims (10)

Safety crossbar (20) for attaching a removable child seat to a vehicle, said crossbar (20) being provided with at least one attachment element (100) adapted to attach a portion of cable (30) on said security rail (20), the attachment element (100) comprising a first surface (101) provided with attachment means for attaching said cable portion (30) to said attachment member (100); ), characterized in that the fastening element (100) further comprises a second surface (102) adhesively attached to said security crossbar (20). 2. Safety cross member (20) according to the preceding claim, characterized in that said second surface (102) of the fastening element (100) is fixed at a distance from an edge or a fold formed in the safety crossbar (20), said distance being less than 20 mm. 3. Safety cross member (20) according to one of the preceding claims, characterized in that the fastening means of the fastening element (100) comprises at least one flexible tab (110) connected to the first surface ( 101) so as to define an acute angle with the first surface (101). 4. Safety cross member (20) according to the preceding claim, characterized in that the attachment means comprises at least two flexible lugs (110) facing each other and defining each an acute angle with said first surface (101). 5. Safety cross member (20) according to any one of claims 3 and 4, characterized in that the at least one flexible lug (110) comprises a body (111) connected to the first surface (101) by a foot (113) and an end (112) opposite the first surface, the end (112) defining an angle with the body (111) so as to be oriented toward the first surface (101). 6. Safety cross member (20) according to the preceding claim, characterized in that a minimum distance between the end (112) and the first surface (101) is configured to be less than or equal to a diameter of said portion of cable (30). 7. Safety cross member (20) according to any one of claims 5 to 6, characterized in that said foot (113) comprises a thickness less than the average thickness of said body (111). Motor vehicle comprising at least one safety cross member (20) according to one of claims 1 to 7. 9. A method of mounting a vehicle according to the preceding claim comprising the steps of: - providing at least one safety crossbar (20), - fixing the at least one crossbeam (20) to the vehicle frame (1). - adhesively attaching the at least one fastening element (100) to the at least one security cross member (20). 10. Mounting method according to the preceding claim, wherein the at least one fastening element (100) is previously attached to a cable portion (30).