Automotive door hinge
A hinge movably attaches a door to a frame member of a motor vehicle. The hinge includes a frame bracket configured for attachment to the frame member and including opposed sidewalls connected by a base, and a door bracket configured for attachment to the door and including opposed arms connected together by a bridge. A plurality of links pivotably and translatably connects the door bracket to the frame bracket. The links include a first link including second opposed arms pivotably connected to the frame bracket and to the door bracket and connected together by a second bridge, and a second link including third opposed arms pivotably connected to the frame bracket and to the door bracket and connected together by a third bridge.
1. A motor vehicle body comprising:
a front door;
a rear door adjacent the front door having a leading edge with a double ninety-degree hem flange;
a B-pillar disposed between the front and rear doors; and
a hinge for movably attaching the rear door to the B-pillar and including:
a frame bracket configured for attachment to the B-pillar and including opposed sidewalls connected by a base;
a door bracket configured for attachment to the door and including first door bracket opposed arms connected together by a first bridge; and
a plurality of links pivotably and translatably connecting the door bracket to the frame bracket and comprising:
a first link including second opposed arms pivotably connected to the frame bracket and to the door bracket and being connected together by a second bridge;
a second link including third opposed arms pivotably connected to the frame bracket and to the door bracket and being connected together by a third bridge; and
wherein the frame bracket further includes a guide lug extending in a generally outboard direction from an outboard side of each one of the opposed sidewalls of the frame bracket; and
wherein the door bracket further includes second door bracket opposed arms being positioned outboard with respect to the first door bracket opposed arms and having a guide therein cooperating with a corresponding one of the guide lugs of the frame bracket guiding the pivotable and translatable motion of the door bracket with respect to the pillar bracket.
2. The motor vehicle body of claim 1 , further comprising a spring-loaded cam mechanism interposed between the frame bracket and door bracket and including:
a cam arm pivotably carried by the door bracket and including at least one detent;
a rotatable cam follower carried by the frame bracket including a roller rotatably mounted to a shaft carried by the frame bracket and retained thereto with a retainer; and
a yieldable biasing member to bias the cam arm into engagement with the cam follower;
wherein as the door bracket is moved from a fully closed position to a fully open position the door bracket translates and pivots, and the cam arm moves over the cam follower such that the cam follower moves into and our of the at least one detent.
3. The motor vehicle body of claim 2 , wherein the at least one detent of the cam arm includes a closed detent, a first partially open detent, a second partially open detent, and a fully open detent, wherein as the door bracket is moved from the fully closed position to the fully open position the cam arm moves over the cam follower such that the cam follower moves out of the closed detent, into and then out of the first partially open detent, into and then out of the second partially open detent, and finally into the fully open detent, and wherein the first partially open detent corresponds to a position wherein the door bracket has moved through about 26 degrees of rotation from the closed detent position, the second partially open detent corresponds to a position wherein the door bracket has moved through about 68 degrees of rotation from the closed detent position, and the fully open detent corresponds to a position wherein the door bracket has moved through about 90 degrees of rotation from the closed detent position.
4. The motor vehicle body of claim 1 wherein the first link is substantially H-shaped, and the second link is substantially U-shaped.
5. The motor vehicle body of claim 1 wherein each guide comprises an arcuate and elongate slot formed in a corresponding one of the opposed outboard arms of the second door bracket.