Browse Prior Art Database

DOOR LATCH ACTUATION PASSIVE-SAFETY BREAKABLE PLASTIC COMPONENT

IP.com Disclosure Number: IPCOM000240711D
Publication Date: 2015-Feb-19
Document File: 1 page(s) / 148K

Publishing Venue

The IP.com Prior Art Database

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 52% of the total text.

Page 01 of 1

DOOR LATCH ACTUATION PASSIVE-SAFETY BREAKABLE PLASTIC COMPONENT

During certain lateral motor vehicle crash scenarios, due to the door deformation caused by the impact to the barrier, the steering wheel might hit the driver's inner door handle located on the side door trim panel; this might apply the required torque to actuate the inner handle which may cause the vehicle door latch to be released during the impact. Normally this condition is addressed at early stages of design by defining the position of the inside release handle in order to avoid any chances of contact.

   When this condition is not achieved, there is also the option to design the door trim to protect the release handle from the steering wheel contact. Sometimes, because of new regulations these two options cannot be followed since the vehicle may be in production by the time the new regulation becomes active. When this happens the common approach is to re-design the entire door trim to adjust the handle position to avoid the chances of contact. This approach usually takes several months to be implemented and involves several constrains.

   To better solve the problem, an additional component to the door latching mechanism is proposed. This component, upon lateral crash impact, will break and disable the side door latch actuation intended by the contact between the inner door handle and the steering wheel.

Method

Typical Side door latch release system

   Usually a side door latch release system comprises three main elements: one latch mechanism (1), an inner door handle (2) and a...