Sealing arrangement for a side door of a motor vehicle

Abstract

Sealing arrangement (3) for a side door (8) of a motor vehicle, comprising a molded part (13) arranged in a corner area (12) between a window guide (7) and an associated window guide rail (10), which includes a molded part lip (18) arranged via a connecting part (19) on a molded part base (17) for bearing against a side window (8), characterized in that a support (23) is arranged at a distance from the connecting part (19) on the molded part base (17) and is formed integrally with it, against which the molded part lip (18) is supported when bearing against the side window (8), wherein the molded part lip (18) is arranged at a distance from the support (23) when not bearing against the side window (8) and projects with an end area (20) over a free end (24) of the support (23), wherein the support (23) is essentially arc-shaped.

Description

[0001] The invention relates to a sealing arrangement for a side door of a motor vehicle according to the preamble of claim 1.

[0002] In such side doors, it is generally known to provide at least one sealing arrangement with a molded part arranged in a corner area between a window guide which closes off the side door at the top or which receives an associated side pane in the upper edge area and seals against a corresponding door column or a corresponding roof frame, and an associated window guide rail along which the side pane is guided in a height-adjustable manner.

[0003] In the corner area of ​​this sealing assembly, the molded part includes a typically angled lip, which is connected to a base via a connecting element. This lip is designed to rest against the inside of the closed side window, thus preventing wind flowing along the upper part of the window from entering the vehicle interior. Preventing such wind is particularly important because it causes unpleasant drafts and noise.

[0004] A generic sealing arrangement is already known from DE 10 2005 028 738 B3. This comprises a molded part arranged in a corner area between a window guide and an associated window guide rail, which includes a molded lip arranged via a connecting part on a molded part base for contact with a side pane.

[0005] From DE 10 2013 108 452 A1, a sealing profile is known with a sealing section made of a first elastically deformable material, and at least one support section, wherein at least one flexible spring section made of a second elastically deformable material is arranged between at least one region of the sealing section and the support section in such a way that the sealing section is resiliently supported on the spring section at least in some areas when the sealing profile is compressed.

[0006] From DE 693 07 117 T2, a sealing or guide strip for sealing or guiding a sharp corner of a window pane and a rigid corner piece is known, wherein the strip comprises a flexible material for contacting the window pane and is arranged to form a sharp corner adapted to the sharp corner of the window pane, and wherein the rigid corner piece is attached to the flexible material in the area of ​​the corresponding sharp corner of the strip in order to support it there.

[0007] German patent DE 10 2011 121 720 A1 discloses a window glass guide with a decorative trim section comprising a base part and a decorative lip part. The base part and the decorative lip part hold an end point of an outer panel of a door frame. The decorative lip part is designed such that its upper end forms a continuous outer cover lip for the rear corner area, and its lower end contacts an outer sealing strip.

[0008] DE 39 21 760 A1 discloses a guide for height-adjustable windows of motor vehicles with a window frame forming an outwardly directed flange on which a sealing profile is mounted. The sealing profile has a leg that overlaps the upper edge of the window pane from top to bottom in the closed position, sealingly sealing against it. On the leg – on its inner side facing the window pane – an upwardly bent, angled extension made of elastic material is formed, which has at least one predetermined bending point. This extension is in sealing contact with the upper edge of the window pane in its closed position and is supported by the inner surface of the sealing profile.

[0009] From DE 101 15 124 A1, a locking device for a door window of a motor vehicle is known, wherein a sealing element is held clamped in a door frame, in which a sliding window is guided on the outside in lateral, integrated guides and is held retractable in an upper guide of the sealing element on the inside. The locking device is arranged in at least one mitered corner of the door frame and comprises a corner plate connectable to the door frame and a locking bar held in the sealing element, which partially overlaps the corner plate and holds it between the sealing element and the locking bar.

[0010] US Patent 2012 / 0079772 A1 discloses a glass guide comprising an outer side wall, an inner side wall, and a bottom wall, generally defining a U-shaped cross-section. A first outer sealing lip and an inner sealing lip are formed in the outer and inner side walls, respectively. An extension is formed to extend from an open end of the outer side wall of the glass guide in the direction of extension for attachment to vertical side sections of the door frame, and a second outer sealing lip is formed to extend from a pointed end of the extension toward a front face of a vehicle body, such that the second outer sealing lip seals the door glass against a front face of a portion sealed by the first outer sealing lip.

[0011] From US Patent 2010 / 0077670 A1, a corner connection section for a window pane seal of a motor vehicle is known, wherein the seal forms a window pane guide channel of the concealed frame type. It serves to connect an upper segment to an ascending segment of the glass guide channel and comprises: an upper part with a top surface intended to be mounted sealingly under the vehicle body and a bottom surface intended to be mounted to the pillar with fasteners, and a lower part connected to the upper part by forming a "C" shape, which is intended to surround an outer end of the pillar and is intended to be in sealing contact with the window pane. The mounting means include a pin that is inserted into a corresponding through-hole in the upper part, such that it extends from the top surface to the bottom surface.The pin is pushed through a column opening in a mounting position to minimize the displacement of the seal in response to aging and fatigue cycles caused by the slamming of the door.

[0012] Finally, EP 1 862 343 A1 discloses a glass guide rail installed in a window frame for guiding a pane of glass. The glass guide channel comprises a base structure made of an elastic material, which includes a bottom section and first and second side wall sections extending in the same direction from the respective ends of the bottom section, thus defining a specific space between them that accommodates an edge portion of the pane of glass. First and second sealing lips are integral with the base structure and extend from the first and second side wall sections, respectively, towards the defined space, such that the edge portion of the pane of glass rests elastically between them at their mutually facing main sections. A support lip is integral with the base structure and extends from the first side wall towards the first sealing lip.A specific part of the support lip constantly touches the first sealing lip in order to press the first sealing lip against the edge part of the glass pane, as long as the glass pane is located between the first and second sealing lips and is positioned near the specific part of the support lip.

[0013] The object of the present invention is to create a sealing arrangement of the type mentioned above, with which, in particular, noises caused by an overflow of airflow in the area of ​​the molded part lip into the interior of the motor vehicle can be prevented in an even improved manner.

[0014] This problem is solved according to the invention by a sealing arrangement having the features of claim 1. Advantageous embodiments of the invention are the subject of the dependent claims.

[0015] To effectively prevent noise in the area of ​​the molded lip, the molded part features a support at a distance from the connecting part. This support acts as a rib for the molded lip when it contacts the side window. Therefore, when the side window is closed, the molded lip comes into contact with the window, and the support also provides additional support on the rear side of the molded lip facing away from the window. This ensures a particularly good fit between the molded lip and the window. However, when the molded lip is not in contact with the window (i.e., when the window is open), it is positioned at a distance from the support.This has the advantage that, when the side window is closed, the molded lip fits snugly against its inner surface and is supported, virtually eliminating the possibility of wind passing through the upper area of ​​the side window and around it into the vehicle's interior. This completely prevents disruptive wind noise and, if present, unwanted drafts. However, because the molded lip is positioned at a distance from its support when not in contact with the side window (i.e., when the window is open), its full freedom of movement is ensured. This is particularly advantageous in cold temperatures, guaranteeing maximum mobility of the molded lip when the side window is closed, thus requiring optimal movement and contact with the inner surface of the side window.The support is located at the base of the molded part. Furthermore, the support is formed as a single unit with the base of the molded part. This results in a particularly simple molded part design. Additionally, the molded part lip extends beyond the free end of the support at one end. This end allows for a particularly flexible and favorable contact of the molded part lip with the inside of the side panel. The support is also curved. This ensures a degree of movement of the molded part lip when it rests against the support.

[0016] In a further embodiment of the invention, the support is inclined relative to the base of the molded part with respect to its cross-section. It has proven particularly advantageous if the support is inclined with its free end towards the connecting element – ​​which connects the molded part lip to the base of the molded part. This results in a particularly favorable support effect in terms of force.

[0017] The invention is described below in connection with a preferred embodiment with reference to the drawings. The drawings show: Fig. 1 a side view of a passenger car with a front and a rear side door, each having a sealing arrangement according to the invention; Fig. 2 a side view of the respective sealing arrangements of the front and rear side doors, each comprising a window guide, by means of which the respective side door or its respective side window is sealed to a door pillar or a roof frame, wherein respective front and rear window guide rails are visible, which in respective corner areas transition into the corresponding window guide by means of respective molded parts; Fig. 3 A partial side view of the molded part in the rear corner area of ​​the front side door according to Detail III in Fig. 2, which comprises a molded part lip arranged via a connecting part on a molded part base for contact with the inside of the side window, and Fig. 4 a partial side view according to a line IV-IV in Fig. 3 indicated section plane running in the transverse direction of the vehicle, wherein in addition to Fig. Three areas of the door frame and side window are visible.

[0018] A in Fig. 1. A passenger car recognizable in side view has a front and a rear side door 1, 2, each of which has a Fig. 2 separately depicted sealing arrangements 3. Each sealing arrangement 3 comprises a window guide 7, which seals the respective side door 1 or 2 against a corresponding door pillar (A-pillar 4 or C-pillar 5) or a roof frame 6, respectively. Likewise, the respective window guide 7 of the corresponding side door 1 or 2 serves to receive the upper edge of a respective side window 8 or 9 when it is in its respective closed position.

[0019] Each of the side doors 1 or 2 comprises a respective front and rear window guide rail 10, 11, which serve to guide the associated side pane 8, 9 and transition at their respective upper ends into the window guide 7 in a manner described in more detail below. For this purpose, each of the sealing assemblies 3 has a molded part 13 in a respective corner area 12, which connects the respective window guide rail 10, 11 with the associated window guide 7.

[0020] One of these molded parts 13, which is located in the rear corner area 12 of the front side door 1 according to detail III in Fig. 2 is recognizable, is in Fig. Figure 3 shows a partial and enlarged side view. The molded part 13 has, on one side, a connection area 14 in which the corresponding window guide 7 is received. Transversely to this, the molded part 13 also has a receptacle 15 in which the window guide rail 11 can be received. Both the window guide 7 and the window guide rail 11 are shown in Fig. 3 not shown.

[0021] The specific design of molded part 13 will now be considered in conjunction with Fig. 4 will be explained in more detail, which shows a sectional view through the molded part 13 along the line IV-IV in Fig. The section plane shown in Figure 3, running transversely to the vehicle, is shown. This contrasts with the representation according to... Fig. 3 is shown in the representation according to Fig. 4 also shows the side window 8 and the respective frame elements 16 of the door shell.

[0022] In summary, the Fig. 3 and Fig. Figure 4 shows that the molded part 13 has a substantially angled base 17, on which a molded part lip 18, extending obliquely from the front bottom to the rear top, is arranged or held in the upper corner region by means of a connecting part 19. The molded part 13, together with the base 17, the molded part lip 18, and the connecting part 19, are in this case formed as a single piece from an elastically compliant plastic. However, a multi-part design would also be conceivable.

[0023] Since the molded lip 18 extends from its lower to its upper end in the transverse direction of the vehicle from the inside to the outside, when the side window 8 is closed, an upper or rear end region 20 is moved inwards in the transverse direction towards the vehicle interior, bearing against an inner surface 21 of the side window. Due to this bearing against the inner surface 21 of the side window 8, or rather due to the inward movement in the transverse direction of the vehicle, the molded lip 18 also comes into contact with a support 23 at its rear end 22. This support 23 is arranged at a distance from the connection area 14 when the window is unloaded. More precisely, the molded lip 18 bears against a free end 24 of the support 23 at its rear end 22, which – as can be seen in particular from the Fig. 3 is recognizable - in the present case, the cross-section is essentially arc-shaped. Furthermore, it is particularly evident from Fig. 4. It can be seen that the support 23 is integrally formed on the base 17 of the molded part 13 and is inclined relative to it. This results in a particularly favorable support effect for the molded part lip 18. Furthermore, it is evident that the end region 20 of the molded part lip 18 projects beyond the support 23, so that in this end region 20 a particularly favorable contact with the inner side 21 of the corresponding side plate 8 results. Fig. However, this is not shown in Figure 4; rather, the molded lip 18 is visible in its unloaded state, which it assumes when the side window 8 is open and thus the molded lip 18 is not in contact with the inside 21 of the side window 8.

[0024] This also applies to an outer lip 25 and a rear lip 26, which are also shown in the unloaded state and, in the loaded state, are supported or abutted on an outer side 27 or an end face 28 of the side disc 8.

[0025] Will the side window be removed from the in Fig. In the position shown in Figure 4, in which the molded part lip 18 normally rests on the inside 21 of the side disc 8 with its end region 20 and is supported on the free end 24 of the support 23 with its rear side 22, is moved into its open position, in which it no longer has contact with the molded part lip 18, the latter assumes the position shown in Figure 4 due to its elasticity. Fig. 4 position shown again, that is, the back side 22 of the molded lip 18 has a corresponding distance to the support 23.

[0026] The advantage of such a sealing arrangement 3, in which the molded lip 18 only comes into contact with the support 23 with its rear surface 22 when a force is applied to or in contact with the side window 8, lies particularly in the free movement of the molded lip 18, allowing it to come into particularly close contact with the side window 8. If, on the other hand, a support 23 had been chosen which, regardless of any corresponding force applied by the side window 8, was always in contact with both the molded base 17 and the molded lip 18, thus connecting the two components 17 and 18, the molded lip 18 would be less suitable, especially at cool temperatures, for forming a flush and tight seal against the inner surface 21 of the side window 8. This is achieved, in particular, by the support 23 maintaining a distance from the molded lip 18 when it is unloaded.The connection area 14 acts as a virtual pivot point around which the molded lip can rotate. Since the molded part 13 and the molded lip 18 are made of an elastic plastic, additional flexibility is achieved. According to the invention, the molded part 13 can be made entirely of one plastic material or of different plastic materials, optionally with inserts or the like.

[0027] The design of the sealing arrangement significantly reduces the passage of drafts, which can enter the vehicle's interior around the side window 8 as a result of the wind flowing along its upper surface. In particular, the support 23 ensures that the molded lip 18 always maintains a particularly favorable contact with the inner surface 21 of the side window 8, regardless of temperature. Reference symbol list 1 side door 2 side doors 3 Sealing arrangement 4 A-pillar 5 C-pillar 6 roof frames 7 Window guide 8 side window 9 side window 10 window guide rails 11 Window guide rail 12 Corner area 13 Molded part 14 Connecting part 15 recording 16 frame element 17 Molded part basic 18 Molded lip 19 Connecting part 20 End range 21 Inside 22 Back 23 Support 24 free ending 25 Lippe 26 Lippe 27 Outside 28 Front

Claims

[1] Sealing arrangement (3) for a side door (8) of a motor vehicle, comprising a molded part (13) arranged in a corner area (12) between a window guide (7) and an associated window guide rail (10), which includes a molded lip (18) arranged via a connecting part (19) on a molded part base (17) for bearing against a side window (8), characterized by , that a support (23) is arranged at a distance from the connecting part (19) on the base of the molded part (17) and is formed integrally with it, on which the molded part lip (18) is supported when in contact with the side window (8), wherein the molded part lip (18) is arranged at a distance from the support (23) when not in contact with the side window (8) and projects with an end region (20) over a free end (24) of the support (23), wherein the support (23) is essentially arc-shaped. [2] Sealing arrangement (3) according to claim 1, characterized by, that the support (23) is inclined relative to the base of the molded part (17).

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