Sealing of a vehicle door trim panel with a connector housing

Abstract: A vehicle door including a window regulator motor and an inner panel, the window regulator motor including a connector housing, the connector housing including connector terminals, in which the connector housing is sealed against the inner panel via sealing means

Description: The present invention relates to vehicle doors, in particular car (automobile) doors. Known vehicle doors are generally manufactured by securing an inner panel to an outer panel using techniques such as hemming or welding. This provides the structure of the vehicle door, with the upper section of the vehicle door comprising an aperture in which the window glass is housed, and the lower section of the door being used to house additional components such as a window regulator mechanism, which guides and operates the window glass, and a window regulator motor which powers the window regulator mechanism. It is difficult to form a waterproof seal between the upper edge of the outer panel and the window glass, and consequently water running down the window glass can penetrate this seal and enter the area between the inner panel and the outer panel. The generic document US5924872 provides a water proof sheet which acts to prevent water and moisture entering the interior of the vehicle. Electrical connectors of a window regulator motor project inwardly towards the door trim. In alternative embodiments the inner panel defines a barrier between a wet side of the door, outboard of the inner panel, and a dry side of the door, inboard of the inner panel. The inner panel is used to mount the window regulator motor and window regulator mechanism. Since the window regulator mechanism guides and locates the window glass, known vehicle doors include window regulator mechanisms which are located on the wet side of the door. The window regulator motor can be located on either the wet or dry side of the door. However since the output shaft of the window regulator motor requires careful alignment with the window regulator mechanism, to achieve this aim it is desirable to locate them both on the same side of the door, and hence locate the window regulator motor on the wet side of the door. This aids functional alignment, but potentially exposes the window regulator motor and in particular its connector terminals, to moisture. To avoid moisture affecting the motor and terminals considerable sealing is employed, which is costly. As an alternative, known vehicle doors generally locate the window regulator motor on the dry side of the door to reduce the sealing requirement, but this provides additional alignment problems. An object of the present invention is to provide an improved vehicle door in which the connector terminals of the window regulator motor are less prone to be affected by moisture. Thus, according to the present invention there is provided a vehicle door as defined in claim 1. Advantageously this permits both the window regulator mechanism and the window regulator motor to be located on the wet side of the door thus aiding functional alignment and the potential for providing subassemblies of door components prior to assembly of the door. This also reduces the degree of sealing required for the window regulator motor. According to a further aspect of the present invention there is provided a method of assembling a vehicle door as defined in claim 2. Advantageously this prevents the connector terminals from being exposed to the wet side of the vehicle door prior to connecting the harness connector. The invention will now be described, by way of example only, with reference to the accompanying drawings, in which, Figure 1 is a perspective view of a vehicle door according to the present invention, Figure 2 is a sectional view of an alternative vehicle door that falls outside the scope of the present invention, and Figure 3 is a sectional view of another alternative vehicle door that falls outside the scope of the present invention. With reference to Figure 1 there is shown a window regulator motor 12 and an inner panel 16 of a vehicle door 10 (only part of which is shown), the inner panel 16 defining a barrier between a wet side W of the door and a dry side D of the door. The inner panel 16 can be in the form of a door skin, i.e. a pressed component having various holes and attachments for components such as window regulator components. Alternatively the inner panel 16 can be in the form of a door module i.e. a panel onto which is pre-mounted various components such as window regulator components, with this pre-assembled door being mounted in a relatively large aperture of a door skin. Alternatively the inner panel 16 can be a panel plate, such as a window regulator mounting plate, onto which parts of a window regulator are mounted. The window regulator motor 12 includes a connector housing 14 which is rigidly fixed to the window regulator motor 12. The connector housing 14 has an external surface 15. The connector housing 14 includes connector terminals 18. The inner panel 16 includes a hole 17 in which is secured a sealing means in the form of an elastomeric diaphragm 20, the diaphragm 20 being sealed to the inner panel 16. The diaphragm 20 includes an aperture 22 located at its centre, the aperture 22 having an inside peripheral edge 24. The window regulator motor 12 is secured to the inner panel 16 via fixing means (not shown) such that the connector housing 14 engages with the diaphragm 20 and protrudes through the hole 17 and the aperture 22. The diaphragm 20 is typically of a thickness such that it is displaced as the connector housing 14 protrudes through the aperture 22. Due to its elastomeric properties the diaphragm 20 deforms and forms a watertight seal between the inside peripheral edge 24 and the external surface 15 of the connector housing 14, directly sealing the connector housing 14 against the diaphragm 20 of the inner panel 16. Thus water is prevented from entering the connector housing 14 and coming into contact with the connecting terminals 18 from the wet side W of the door 10. The connecting terminals 18 are exposed on the dry side D of the vehicle door 10 and ready for connection to a suitable harness connector (not shown). Figure 2 shows an example not according to the invention employing different sealing means. Consideration of Figure 2 shows the connector housing 14 and an alternative inner panel 116. The inner panel 116 includes sealing means in the form of a peripheral rubber seal 120. The peripheral rubber seal is located in an aperture 117 of the inner panel 116. The peripheral rubber seal 120 is sealed to the inner panel 116. The connecting terminals 18 are exposed on the dry side D of the vehicle door 10 and ready for connection to a suitable wiring harness (not shown). Figure 3 shows another example not according to the invention employing different sealing means. Consideration of Figure 3 shows the connector housing 14, with a housing edge 219 and an inner panel 216. The inner panel 216 has an aperture 217, the aperture 217 being defined by an aperture edge 223. The inner panel has an outer surface 230 located adjacent the aperture edge 223. The inner panel 216 includes sealing means secured thereto in the form of an edge to surface seal 220. The seal 220 is sealed to the outer surface 230 of the inner panel 216. The seal 220 includes a groove 228, the groove 228 including a groove base 229. The connecting terminals 18 are exposed on the dry side D of the vehicle door 10 and ready for connection to a suitable harness connector (not shown). During assembly of a vehicle door according to the above example, it is apparent that the window regulator motor 12 is located onto the inner panel 16,116,216, with sealing means 20,120,220 acting to seal the connector 14 relative to the inner panel 16,116,216 before subsequently connecting a harness connector (not shown) to the connecting terminals 118. The inner panel has an outer surface 230 located adjacent the aperture edge 223. The inner panel 216 includes sealing means secured thereto in the form of an edge to surface seal 220. The seal 220 is sealed to the outer surface 230 of the inner panel 216. The seal 220 includes a groove 228, the groove 228 including a groove base 229. The window regulator motor 12 is secured to the inner panel 216 via fixing means (not shown) such that the connector housing 14 engages with the seal 220. Thus, a watertight seal is formed between the groove base 229 of the seal 220 and the housing edge 219 of the connector housing, directly sealing the connector housing 14 against the seal 220 of the inner panel 216. Thus water is prevented from entering the connector housing 14 and coming into contact with the connecting terminals 18 from the wet side W of the door 10. The connecting terminals 18 are exposed on the dry side D of the vehicle door 10 and ready for connection to a suitable harness connector (not shown). In Figure 3 it can be seen that the sealing means employed forms a face to face seal between the external surface 15 of the connector housing 14 and the inner panel 216, as opposed to the peripheral seal formed between the connector housing 14 and the inner panel 16,116 as shown in the embodiments of Figures 1 and Figures 2. A connector housing including a seal located and secured on its housing edge may be employed to provide an alternative form of face to face seal. This seal would then abut a surface of the inner panel when assembled. During assembly of a vehicle door according to the above examples, it is apparent that the window regulator motor 12 is located onto the inner panel 16,116,216, with sealing means 20,120,220 acting to seal the connector 14 relative to the inner panel 16,116,216 before subsequently connecting a harness connector (not shown) to the connecting terminals 118.

Claims: A vehicle door (10) including a window regulator motor (12) including a connector housing (14) having an external surface (15) and connector terminals (18), an inner panel (16) of the door (10) having a hole (17), characterized in that an elastomeric diaphragm (20) is secured to the hole (17), the diaphragm being sealed to the inner panel (16) and having an aperture (22) with an inside peripheral edge (24) wherein the external surface of the connector housing is sealed against the inside peripheral edge of the diaphragm. A method of assembling a vehicle door including the steps of: providing a vehicle door (10) with an inner panel (16) having a hole (17) in which is secured an elastomeric diaphragm (20) which is sealed to the inner panel and has an aperture (22) with an inside peripheral edge (24), providing a window regulator motor (12) including a connector housing (14) having an external surface (15) and connector terminals (18), providing a harness having a harness connector, assembling the window regulator motor (12) onto the inner panel (16) such that the external surface of the connector housing is sealed against the inside peripheral edge of the diaphragm, subsequently connecting the harness connector to the connector terminals (18).

Inventors: BLUME KLAUS, CABANNE DAMIEN, DE VRIES PASCAL, DOBSON SIMON BLAIR, HOPSON CHARLES BERRY, LAURANDEL HERVE, LAWRIE MARK GRAHAM, LE GALLO YANN, BLUME, KLAUS, CABANNE, DAMIEN, DE VRIES, PASCAL, DOBSON, SIMON BLAIR, HOPSON, CHARLES BERRY, LAURANDEL, HERVE, LAWRIE, MARK GRAHAM, LE GALLO, YANN
Applicants: ARVINMERITOR LIGHT VEHICLE SYS, ARVINMERITOR LIGHT VEHICLE SYSTEMS-FRANCE
Application year: 2001
Main classification: B60R13
IPC codes: B60R11, B60R13