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Negative poisson's ratio structure steering tubular column and designing method for same

A technology of negative Poisson's ratio and steering column, which is applied in the direction of steering column, steering control, steering mechanism, etc., can solve the problems of limited energy absorbed by the steering column, complex deformation energy-absorbing mechanism, and reduced structural reliability. Simple structure, improved passive safety, and reduced impact force

Inactive Publication Date: 2017-03-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] In order to solve the above problems, the object of the present invention is to propose a steering column with a negative Poisson's ratio structure and its design optimization method, which can overcome the limited energy absorbed by the steering column in the process of automobile collision in the prior art, and the deformation of the energy-absorbing mechanism. Complexity, reduced structural reliability and high cost

Method used

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  • Negative poisson's ratio structure steering tubular column and designing method for same
  • Negative poisson's ratio structure steering tubular column and designing method for same
  • Negative poisson's ratio structure steering tubular column and designing method for same

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[0041] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0042] combine figure 1 As shown, according to an embodiment of the present invention, a steering column with a negative Poisson's ratio structure includes: an upper column shell 2; a lower column shell 7 connected to the upper column shell 2; a negative Poisson's ratio structure filling The inner core 1 is arranged inside the upper column shell 2 and the lower column shell 7 at the same time; the steering column mounting bracket 4 is used for fixing to the vehicle body (not shown in the figure); the steering column upper bracket 3, It is arranged between the upper column shell 2 and the steering column mounting bracket 3 for carrying the upper column shell 2; the steering column lower bracket 6 is arranged between the lower column shell 7 and the steering column mounting bracket 3 The space is us...

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Abstract

The invention discloses a negative poisson's ratio structure steering tubular column and a designing method for the same. The negative poisson's ratio structure steering tubular column comprises an upper tubular column housing, a lower tubular column housing, inner cores, a steering tubular column installation rack, a steering tubular column upper rack and a steering tubular column lower rack, wherein the lower tubular column housing is connected with the upper tubular column housing; a negative poisson's ratio structure is filled with inner core; the upper and lower tubular column housings are also filled with the inner cores; the steering tubular column installation rack can be fixed on a vehicle body; the steering tubular column upper rack is arranged between the upper tubular column housing and the steering tubular column installation rack to carry the upper tubular column housing; and the steering tubular lower rack is arranged between the lower tubular column housing and the steering tubular column installation rack to carry the lower tubular column housing. Deficiencies of limited energy absorption during automobile crash, complicate deformation energy-absorbing mechanism, low structural reliability and high cost of the steering tubular column can be overcome by the use of the negative poisson's ratio structure steering tubular column.

Description

technical field [0001] The invention relates to the technical field of automobile steering systems, in particular to a steering column with a negative Poisson's ratio structure and a design method thereof. Background technique [0002] When a car has a frontal collision, the steering system including the steering column and the steering wheel at the front of the car will move backwards, that is, the direction of the driver, and the driver will move forward due to the influence of inertia, so the driver can easily Injury by the steering wheel, the impact of the steering wheel on the chest and abdomen of the driver is a very common type of injury in car frontal collision traffic accidents. During the collision contact process, the steering column needs to absorb energy to prevent the driver from being injured by the collision force beyond the human body's ability to bear. [0003] In the traditional steering column structure, the steering wheel moves upward and rear during th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D1/19G06F17/50
CPCB62D1/192G06F30/15G06F30/20
Inventor 周冠赵万忠王春燕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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