Integral subframe to direct impact loadpath
A subframe mount of a front subframe comprising a vehicle frame. The subframe mount comprises a main body configured to receive a securing feature of a frame body of the vehicle frame. The subframe mount also comprises an open-ended slot configured to enable translation of the securing feature independent of the subframe mount in response to an impact event.
1 . A mount for connecting a subframe to a frame rail, the mount comprising:
a tubular top portion of a main body comprising a pair of opposing sides, wherein:
the tubular top portion extends towards a tabbed securing feature that extends towards the main body from the frame rail, and
the tubular top portion receives a fastener that affixes the tabbed securing feature to the tubular top portion;
at least one U-shaped deformation-initiating feature of the main body structured to guide the mount away from the tabbed securing feature in response to an impact event; and
an open-ended slot in each opposing side of the pair of opposing sides that forms a continuous opening from a first opposing side of the pair of opposing sides to a second opposing side of the pair of opposing sides, wherein the open-ended slot enables translation of the tabbed securing feature and the fastener independent of the mount in response to the impact event.
2 . The mount of claim 1 , wherein the open-ended slot is arranged such that a top opening of the open-ended slot faces a bottom portion of the frame rail.
3 . The mount of claim 1 , wherein:
the at least one U-shaped deformation-initiating feature is structured to at least one of mechanically deform or mechanically fail when subjected to an impact force exceeding a threshold impact force; and
mechanical deformation of the at least one U-shaped deformation-initiating feature guides the mount away from the tabbed securing feature and the fastener, the fastener remaining affixed to the tabbed securing feature.
4 . The mount of claim 1 , wherein the tabbed securing feature is configured to accommodate the fastener.
5 . The mount of claim 1 , wherein the mount abuts at least one rigid subframe rail.
6 . A front vehicle subframe, comprising:
a tabbed securing feature extending from a frame rail towards a main body of a frame mount;
the frame mount comprising:
a tubular top portion of the main body comprising a pair of opposing sides wherein the tubular top portion extends towards the tabbed securing feature,
at least one U-shaped deformation-initiating feature structured to guide the frame mount away from the tabbed securing feature in response to an impact event, and
an open-ended slot in each opposing side of the pair of opposing sides that forms a continuous opening from a first opposing side of the pair of opposing sides to a second opposing side of the pair of opposing sides, wherein the open-ended slot receives a fastener that affixes the tabbed securing feature to the frame mount; and
at least one reinforcement structure, arranged rearward of the frame mount, that abuts the frame mount at a portion of the main body of the frame mount different from a portion of the frame mount comprising the open-ended slot.
7 . The front vehicle subframe of claim 6 , wherein the open-ended slot is configured to accommodate the fastener when the fastener interfaces with the tabbed securing feature.
8 . The front vehicle subframe of claim 6 , wherein the tabbed securing feature corresponds to a frame body mount for a frame body of a vehicle.
9 . The front vehicle subframe of claim 6 , further comprising an impact can structure, wherein a front portion of the impact can structure is positioned above a rear portion of the impact can structure, and wherein the rear portion abuts at least one rigid subframe rail.
10 . The front vehicle subframe for claim 6 , wherein the at least one reinforcement structure abuts the frame mount based on an arrangement of struts that flair towards sides of the front vehicle subframe.
11 . The front vehicle subframe of claim 6 , further comprising a second frame mount, wherein the second frame mount is configured to mechanically deform when subjected to an impact force of the impact event exceeding a threshold impact force.
12 . The front vehicle subframe of claim 11 , wherein the second frame mount is configured to release a securing structure corresponding to a second portion of a frame body, different from a first portion of the frame body comprising the frame rail secured at the frame mount, when mechanically deforming.
13 . The front vehicle subframe of claim 6 , wherein the front vehicle subframe is configured to mechanically deform down and away from at least a portion of a frame body fixedly attached to the frame mount by the tabbed securing feature when subjected to a front impact force, wherein the frame body comprises the frame rail.
14 . The front vehicle subframe of claim 6 , further comprising:
three and only three pairs of frame mounts, wherein:
a first pair of frame mounts of the three pairs of frame mounts is positioned towards a front portion of the front vehicle subframe and comprises at least one deformation initiation rib and a first securing feature of a frame body, wherein the frame body comprises the frame rail,
a second pair of frame mounts of the three pairs of frame mounts is positioned towards a middle portion of the front vehicle subframe and comprises an open-ended slot configured to release a second securing feature of the frame body, and
a third pair of frame mounts of the three pairs of frame mounts is positioned towards a rear portion of the front vehicle subframe and comprises a deformation initiation portion forward of a third securing feature of the frame body.
15 . A vehicle, comprising:
a vehicle frame comprising:
a tabbed securing feature extending from a frame rail towards a frame mount;
a front vehicle subframe, comprising:
the frame mount comprising:
a tubular top portion of a main body comprising a pair of opposing sides, wherein the tubular top portion extends towards the tabbed securing feature,
at least one U-shaped deformation-initiating feature structured to guide the frame mount away from the tabbed securing feature in response to an impact event, and
an open-ended slot in each opposing side of the pair of opposing sides that forms a continuous opening from a first opposing side of the pair of opposing sides to a second opposing side of the pair of opposing sides, wherein the open-ended slot receives a fastener that affixes the tabbed securing feature of the frame rail to the frame mount; and
at least one reinforcement structure, arranged rearward of the frame mount, that abuts the frame mount at a portion of the main body of the frame mount different from a portion of the frame mount comprising the open-ended slot;
at least one suspension mount;
at least one body mount; and
a powertrain assembly.
16 . The vehicle of claim 15 , wherein:
the front vehicle subframe is configured to be secured to a pair of frame rails, wherein the pair of frame rails comprises the frame rail;
the pair of frame rails comprise at least one securing feature, wherein the pair of frame rails abut at least one rigid crossmember configured to withstand a maximum impact force; and
a rear vehicle subframe is secured to a rear portion of the pair of frame rails.
17 . The vehicle of claim 15 , wherein the front vehicle subframe further comprises at least one impact can structure arranged forward of the frame mount and configured to mechanically deform in response to an impact load.
18 . The vehicle of claim 15 , wherein the open-ended slot is configured to accommodate the tabbed securing feature.
19 . The mount of claim 1 , wherein:
the first opposing side is separated by a gap from the second opposing side; and
the continuous opening extends from a first open-ended slot in the first opposing side to the gap and to a second open ended slot in the second opposing side.