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1. EP2639135 - SUPPORT DEVICE FOR STEERING COLUMN

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

Claims

1. A steering column support apparatus, comprising:

a bracket (11a) on the vehicle side having a locking hole (45) that extends in the axial direction of a steering column (6c) and that is located in the center section in the width direction of the bracket, this bracket (11a) on the vehicle side being supported by and fastened to the vehicle so as not to displace in the forward direction during a secondary collision;
a bracket (33) on the column side that is supported by the steering column (6c); and

a locking capsule (47) that is fastened to the bracket (33) on the column side, and in this fastened state, comprises a locked section, both end sections thereof being locked inside the locking hole (45), and a top side section that is formed on the top side of the locked section and having a width dimension that is greater than the maximum width dimension of locking hole (45), and that in fastened state, has a flange section (48) that is located on the portion of the top side of the bracket (11a) on the vehicle side on both sides of the locking hole (45), and by combining the locking capsule (47) and the bracket (11a) on the vehicle side when the portion of the bracket (11a) on the vehicle side on both sides of the locking hole (45) is held between the bottom surface of the flange section (48) of the locking capsule (47) and the top surface of an underneath support plate (55, 55c) that is located below the flange section (48), the bracket (33) on the column side being supported by the bracket (11a) on the vehicle side so as to be able to break away in the forward direction due to an impact load that is applied during a secondary collision,

the bracket (33) on the column side comprising top plate section (55) that has a width dimension that is greater than the width dimension of the locked section of the locking capsule (47), and that is provided with the underneath support plate section (55) that is located below the flange section (48) of the locking capsule (47); and

together with the bottom surface of the locked section of the locking capsule (47) coming in contact with the top surface of the top plate section (55) of the bracket (33) on the column side, the portion of the bracket (11a) on the vehicle side on both sides of the locking hole (45) held between the bottom surface of the flange section (48) and the top surface of the top plate section (55),

small through holes (49a, 49b) that are formed in a plurality of aligned locations in the flange section (48) and the bracket (11a) on the vehicle side in the edges around the locking hole (45), and connecting pins (50) span between these small through holes (49a, 49b), and

means for suppressing a rise in contact pressure, which is an extending section (57) that is formed on the front end section of the underneath support plate section (55) and protrudes further toward the front than the edge on the front end of the flange section (48),

wherein the extending section (57) is provided with an inclined surface (58) that is formed on the portion at the front end on the top surface of the extending section (57) and is inclined in a direction downward going toward the edge on the front edge of the extending section (57), this means suppressing a rise in contact pressure that increases at the area of contact between the front edge of the top surface of the underneath support plate section (55) and the bottom surface of the bracket (11a) on the vehicle side, when the front edge of the top surface of the underneath support plate section (55) is pressed against the bottom surface of the bracket (11a) on the vehicle side due to a moment that is applied from the steering column (6c) to the bracket (33) on the column side during a secondary collision.


  2. The steering column support apparatus according to claim 1, wherein a low-friction material layer made of a material that is different from the metal of the underneath support plate (55) and bracket (11a) on the vehicle side, is provided at the area of contact between the top surface of the underneath support plate (55) and the bottom surface of the bracket (11a) on the vehicle side so as to reduce the coefficient of friction at the area of contact.
  3. The steering column support apparatus according to claim 1, wherein the length in the forward/backward direction of the locking hole (45) is longer than the length in the same direction of the locking capsule (47), and is long enough that even when the locking capsule (47) has displaced in the forward direction, at least part of the locking capsule (47) is located on the top side of the front end section of the bracket (11a) on the vehicle side, making it possible to prevent the locking capsule from dropping down.