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US3921747A Expired / Lapsed US ⏱️ 0.0 years remaining

Steering column support structure for vehicles

Assignee: Toyota Motor Corp
•
Filing: 1974-03-01
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Granted: 1975-11-25
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Expires: 1994-03-01
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Abstract

Abstract A mounting structure for a steering column assembly comprising an upper and a lower column tubes telescopically coupled to each other to effect an impact energy absorbing element assembled therein by way of an axial compressive deformation of the tubes in a case of a vehicle collision. The mounting structure may have no influence from any deformation of a fire-wall of the vehicle by way of holding a lower column tube at a rearward position isolated in a given distance from the fire-wall.

Inventors

  • 👤 Ichiro Suzuki
  • 👤 Hiroyuki Watanabe

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 12:11
CPC Classifications
B; B62; B62D; B62D1/00; B62D1/02; B62D1/16; B62D1/18; B62D1/19; B62D1/195

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 204 words
A support structure for a steering column assembly comprising an upper and a lower column tubes telescopically coupled to each other for journalling a steering shaft therein, said steering shaft having an upper and a lower shafts telescopically coupled to each other, energy absorbing means assembled with said column assembly for absorbing a forward impact energy exerted thereon from a steering wheel mounted on the upper end of said steering shaft during the axially relative displacements of said column tubes, a cowl panel member located under a front windshield of the vehicle and being a portion of the vehicle body structure, and a main support member secured to said cowl panel member, said main support member having at is front end a receiving portion spaced rearwardly isolated a given distance from a firewall located in front of the occupant compartment of the vehicle to function as a load reaction member, said upper column tube being releasably secured on the rear portion of said main support member and said lower column tube being rigidly secured at its front end on said receiving portion of said main support member to insure that said lower column tube may have no influence from any deformation of the firewall.
Claim 2
Dependent Claim 204 words
A support structure for a steering column assembly comprising an upper and a lower column tubes telescopically coupled to each other for journalling a steering shaft therein, said steering shaft having an upper and a lower shafts telescopically coupled to each other, energy absorbing means assembled with said column assembly for absorbing a forward impact energy exerted thereon from a steering wheel mounted on the upper end of said steering shaft during the axially relative displacements of said column tubes, a cowl panel member located under a front windshield of the vehicle and being a portion of the vehicle body structure, and a main support member secured to said cowl panel member, said main support member having at is front end a receiving portion spaced rearwardly isolated a given distance from a firewall located in front of the occupant compartment of the vehicle to function as a load reaction member, said upper column tube being releasably secured on the rear portion of said main support member and said lower column tube being rigidly secured at its front end on said receiving portion of said main support member to insure that said lower column tube may have no influence from any deformation of the firewall.
Claim 3
Dependent Claim 48 words
A steering column support structure as set forth in claim 1, wherein a compressible connecting member is spanned between the bottom end of said receiving portion of said main support member and a portion of said fire-wall to support said main support member against pulling force exerted thereon.
Claim 4
Dependent Claim 71 words
A steering column support structure as set forth in claim 1, wherein said main support member has a U-shaped cross-section and is secured at its forward upper portion on the bottom portion of said cowl panel member and reinforced by a reinforcement member secured at its front end on the back portion of said cowl panel member and at its bottom portion on the rear portion of said main support member.
Claim 5
Dependent Claim 58 words
A steering column support structure as set forth in claim 3, wherein said receiving portion of said main support member is formed by a front panel member secured at its both ends on the inner side walls of the front portion of said main support member to function as a load reaction member for said lower column tube.
Claim 6
Dependent Claim 38 words
A steering column support structure as set forth in claim 3, wherein said main support member and said reinforcement member are secured respectively on ribs parallely extended from said cowl panel member to reinforce said steering support structure.
Claim 7
Dependent Claim 33 words
A steering column support structure as set forth in claim 1, wherein said upper column tube is secured on the rear portion of said main support member by way of a shearable element.

References Cited (Backward Citations)

US3505897A Cited
US3724286A Cited
US3702081A Cited
US3803938A Cited
US3798994A Cited
US3815438A Cited
US3827710A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-11-24 1979-05-26 1979-11-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-11-24 1983-05-26 1983-11-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-11-24 1987-05-26 1987-11-25 $7700.00 Window Closed / Lapsed

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