SEAL FOR MOTOR VEHICLE DOORS

Abstract: A seal for motor vehicle doors, of the type applied on the frame of a door window, and in which the frame has an open cross-section and is provided with outwardly turned edges, extends in a substantially U-shaped configuration and is applied in a snapping fashion onto saidopen cross-­ section of the frame to form the guide means for guiding the glass of the window; the seal is further provided with a stiff­ ening core and with sealing appendixes for the glass and the window frame with the body of the vehicle.

Description: TEXT OF THE DESCRIPTION The present application relates a seal having the following functions: box-shaping structural element of the door structure, glass guiding and retaining structure, water-proof seal,and closure of the slit between the door and the body in the windowed region of the motor vehicle door, in particular in its perimetral inner and outer edges respectively. It is known that the performance of the said functions is carried out generally by various and individual seal and by plate members having different configurations relative to each other; so that, in addition to the already considerable constructive difficulties, there are also difficulties connected with their assembly onto the door, to the prejudice of the cycle of production of the door itself, and-in particular the forming of its framework, the obtainment of its outer coating, the application of accessory parts, such as handles, window regulator, inner door lock control lever, as well as the insertion of the window run channel for the sliding movement of the respective window. This latter member, generally made of metal, in addition to the disadvantages mentioned hereinabove, gives rise also to working and assembly difficulties, generating as well a sensible and prejudicial axial deviation degree relative to outer contour of the vehicle body, with evident aerodynamic anomaly and hence increase of the known penetration coefficient of the vehicle. The object of the invention is to obviate said disadvantages,by eliminating the window run channel and making recourse to a new technical solution comprising, first of all, a single integral seal which, thanks to the direct incorporation thereinto of sectors having a graduated elasticity and a suitable structuration, results adapted to entirely accomplish the functions conventionally performed by the individual units of the known seals and joined plates. In addition to the evident and usefull weight and size reduction, as well as the elimination of the metal material scrap, by applying the present invention, a simplified and rapid.contruction of the seal and the respective snap-assembly are obtained, thus employing a shorter time for the assembly cycle. Moreover, in this manner a product is obtained which possesses a fully reliable efficiency during the whole period of its activity, thereby obtaining from all this an evident economical benefit, such as the reduction of the costs already since the beginning of the manufacture, which costs therefore become commercially more competitive. In order to attain all these objects and advantages, as well as those which will be apparent from the following detailed description, there is provided a seal for motor vehicle doors, of the type applied on the frame of the door window, characterized in that the frame has an open cross-section with outwardly turned edges having applied between them a seal extending in a substantially U-shaped configuration to form the guide means for guiding the glass, the said seal being provided with a stiffening core and with sealing appendixes for the glass and the window frame with the body of the vehicle. A practical and preferred technical solution of the invention will now be described by way of non limiting example and with reference to the annexed drawing, in which: FIGURE 1 is a frontal and exploded perspective view of the motor vehicle door incorporating in its upper portion the seal according to the invention; FIGURE 2 is a partial sectional view along line II-II of FigureP FIGURE 3 is a partial sectional view along line III -III of Figure 1; FIGURE 4 is a frontal sectional view of the seal, shown not in its assembled condition i.e. without the respective contact deformations. Referring to said Figures, reference numeral 1 indicates generally the door of a motor vehicle, comprising in the known manner a lower and upper portion 2, 3, respec tively, of its frame 4, the portions 3 resulting in being basically formed by the pair of spaced pillars 5-6, which are in their turn connected to one another by the cross member 7, the whole being apt to define the space 8, in which the conventional glass 9 carries out its vertical movement of translation (see Figure 1). Developped in its position along the perimeter generated by the space 8, i.e. on the outer framework of the door 1, is the seal indicated generally by reference numeral 10, made of an elastomeric material and having a continuous and uniform profile, as can be seen from the graph concerning the mutual identity of the two sectional views. Said seal 10 which, in accordance with the specific-inven- tive characteristic, is monolithic in its structure, comprises a central support nucleus 11 made of hardened rubber, geometrically profiled to an approximately U-shaped configuration, upon previous insertion of a reiforcing and angularly shaped metallic insert 12-12a of reduced thickness and with turned appendixes indicated by reference numerals 13-13a-14. As regards still the profiled element 11, its upper branch 15 includes the recesses indicated by reference numerals 16 and 17, in the respective ends, whereas its turned edges 18-18a-19 are coniugated outwardly with the cor risponding inner metal elements 13-13a-14 mentioned hereinabove. Extending from the inner side of the branch 15 is the arcuatedsector 20, provided with outer pointed contact appendixes 21 circumferentially spaced from each other, and made of soft rubber, whose functional deformative softness is enhanced also by its inner cavity 22. Again, in the central U-shaped nucleus 11, the longitudinal and spaced branches 15 and 23 are connected in a continuous manner by the radial branch 26 which includes internally an oscillating appendix 27 also made of soft rubber, whereas extending from above the whole is the sector 28, made of closed cell polyprene and provided with a lip-shaped tapered and resiliently oscillating end 29. Positioned below said sector 28 is the further sector 30 made of soft rubber , whose softness characteristic is enhanced by its inner cavity 31 (see Figures 2 and 4) The described parts forming the integral seal usefully accomplish the individual operative functions, as follows The metal core 12 with the respective turned end parts 13-13a, together with the outer turned parts 15-18-18a made of hardened rubber, forms a valid box shaping structural element of the upper portion 3 formed in the frame 4 of the door 1. The turned parts 18 and 18a of the ardened elastomeric 'JI#'J I## v &verbar; U ) branch 15 ensure, during the assembly, the positioning of the seal 10, by engaging in its recesses 16 and 17 the turned ends 32 of the metal structure 33 of the door. The central nucleus 11, still together with its metsl core 12-12a-14, forms in its interior a valid guiding and retaining element during the transation and, consequently, during the lifting and setting of the glass 9 for which cooperates also, under resilient deformation, the soft rubber sector 20 whit its outer appendixes 21, thereby reaching the position 20a (see Figure 3), and whose dust-proof condition is ensured by the radial branch 26 together with the oscillating appendix 27 which guides and retains in position the glass. The water-proof condition between the door I and the vehicle boby is efficiently ensured by the upper polyprene sector 28, whose end 29 forming an oscillating lip 29a efficaciously contacts the portion 34 of the body 35 (see Figure 3). The closure of the slit between thr door and the outer sector 36 of the vehicle boby is validly obtained by the soft rubber part 30, operatively deformed at 30a, which in particular, by being resiliently squashed, results in being irremovably positioned between the outer portion 37 of the body 35 and the outer edge 38 of the door 1, thus originating a positive reduction of the noise and a valuable optimal aereodynamic profile, as well as a protection against penetration of dust. From what has been illustrated hereinabove, besides the mentioned advantages it is also apparentthatwhit the present seal a new and economical technical solution is obtained for the assembly of the door with its components, which technical solution may be completed by an outer leather coating 40 applied in an aesthetical manner onto the inner lower part 2 of the door frame 4, all this being achieved whit an evident fuether productive increment. Obviously, the non limiting embodiment described hereinabove is susceptible of structural and constructional modifications tending to further improvements, for economical and performance purposes, without departing from the scope of the present Utility Model, as protected by the following Claims.

Claims: CLAIMS 1.- A seal for motor vehicle doors, of the type applied on the frame of the door window, characterized in that the , ;vK frame has an open cross-section with outwardly turned edges having applied between them a seal extending in a substantially U-shaped configuration to form the guide means for guiding the glass, the said seal being provided with a stiffening cqre and with sealing appendixes for the glass and the window frame with the body of the vehicle. 2.- A seal for motor vehicle doors according to Claim 1, characterized in being provided with turned edges engaging around the outwardly turned edges of the frame, during their snap coupling movement. 3.- A seal for motor vehicle doors according to Claim 1, characterized in that the glass sealing appendix is substantially hollow and arcuated in shape and is rigidly connected, at its ends, to the seal section snap-coupled with the frame. 4.- A seal for motor vehicle doors according to Claim 1, characterized in that the appendixes which provide the sealed condition between the door and the body of the vehicle, are rigidly connected to the seal outwards thereof and provide respective seals extending internally and flush with the profile of the vehicle.

Inventors: MANTOVANI, ALDO
Applicants: S.I.R.P. STUDI INDUSTRIALI REALIZZAZIONE PROTOTIPI S.P.A.
Application year: 1984
Main classification: B60R13
IPC codes: B60J10