CN104149842B - A kind of steering column carrier structure improving steering natural frequency - Google Patents
A kind of steering column carrier structure improving steering natural frequency Download PDFInfo
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- CN104149842B CN104149842B CN201410430475.4A CN201410430475A CN104149842B CN 104149842 B CN104149842 B CN 104149842B CN 201410430475 A CN201410430475 A CN 201410430475A CN 104149842 B CN104149842 B CN 104149842B
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Abstract
The present invention proposes a kind of steering column carrier structure improving steering natural frequency, including bottom bracket, bracket and steering column installing plate.It designs one section of extension towards the direction of steering column installation direction dish on the upper and lower bracket of steering column, steering column locking point on upper and lower bracket also moves to the position close to steering wheel with extension, stagger with the position installing hard spot on steering column installing plate, distance L1 between sustained height position, and steering column locking point and steering wheel is not less than distance L2 installed between hard spot and steering wheel.The present invention controls in steering column relative to the hard spot i.e. locked position of steering column locking point with the structure of bottom bracket by changing steering column bracket, thus shorten the steering column distance to steering wheel section, and then regulate quality and the Stiffness Distribution situation of steering, it is achieved the raising of steering natural frequency.
Description
Technical field
The present invention relates to automobile steering system.
Background technology
The function of automobile steering system is to input steering order according to the wish of driver, thus obtains the course changing control that automobile is overall.Along with people are to driving recreational, the raising of riding comfort requirement, steering is as the parts of direct body contact's perception, its ergonomics and noise and vibration performance become the index that people increasingly pay close attention to, in order to solve the requirement of different client's Driving, the steering of more and more vehicles has angle and height-adjustable mechanism, this mechanism is so that the position of steering wheel is adjusted within the specific limits, to meet the driving habits of different crowd, as shown in " adjustable tilt angle device for steering column of car " (patent No.: ZL200920203715).Yet with the existence of adjustable structure, weaken the coupling stiffness between steering column and bracket, as shown in Figure 1 and Figure 2.Fig. 1 is conventional steering tubing string, and Fig. 2 is the steering column with adjustable structure.As it is shown in figure 1, in traditional structure, the most seam welding with steering column by bracket 5, coupling stiffness is higher, bracket is fixed with vehicle body by installing hard spot 7, and the natural frequency Property comparison of steering is good.As in figure 2 it is shown, and adjustable structure uses adjustable handle fixed plate 1 and adjustment cam 9 to coordinate a certain amount of coupling mechanism force to realize the connection of steering column and bracket 5.So that the natural frequency characteristic of steering is deteriorated, causes steering easily to produce with vehicle body, chassis system part and resonate, affect driver comfort and safety, this just control to steering vibration noise bring new challenge.
For adapting to the demand of the numerous clients in market, the cycle of automobile research and development also greatly speeds up, and the upgrading of various vehicles changes money car and the most increasingly receives an acclaim, especially the upgrading of steering, and impression of upgrading intuitively to client is stronger.In traditional automotive development design process, when the natural frequency of steering is unsatisfactory for requiring, natural mode of vibration is promoted often by modes such as increasing the diameter of steering column, the structural member of thickening steering column, change steering column connection hard spot position, but change money car due to by cost, space, heavily quantitative limitation, and the consideration of steering component universality, steering column itself can design space the least, cause this method to produce little effect.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of steering column carrier structure improving steering natural frequency.This structure is capable of the raising to steering natural mode of vibration, for not changing steering column, hard spot position is installed, in the case of steering change is less, develop satisfactory steering quickly and easily, farthest realize the generalization of parts, thus it is greatly shortened the construction cycle of steering, reduce development cost.
According to the formula for natural frequency of mechanical system, system frequency is affected by system equivalent stiffness and Mass Distribution.A kind of steering column carrier structure improving steering natural frequency of the present invention.It is with the formula for natural frequency of mechanical system as theoretical basis, do not increasing steering each structural member size and thickness, on the premise of not changing steering internal structure and manufacturing cost, simple and practical mode is used to realize the regulation to steering natural frequency.
A kind of steering column carrier structure improving steering natural frequency that the present invention proposes, including bottom bracket, bracket and steering column installing plate；Having the installation hard spot fixing with vehicle body on described steering column installing plate, bracket is seam welding with steering column installing plate, bracket has the adjustable chute installing adjustable handle rotating shaft, as steering column locking point；Steering column body is seam welding with bottom bracket, and bottom bracket U-shaped part spacing with rotating shaft is seam welding；Bottom bracket, bracket are connected by adjustable handle rotating shaft, and adjustable handle rotating shaft is connected locking through adjustable chute, bottom bracket, the spacing U-shaped part of rotating shaft and the adjustable handle fixed plate in steering column bracket by adjustment cam.Its improvement is: design one section of extension towards the direction of steering column installation direction dish on the upper and lower bracket of steering column, steering column locking point on upper and lower bracket also moves to the position close to steering wheel with extension, stagger with the position installing hard spot on steering column installing plate, distance L1 between sustained height position, and steering column locking point and steering wheel is not less than distance L2 installed between hard spot and steering wheel.
The present invention is in steering column carrier structure design process, control in steering column relative to the hard spot i.e. locked position of steering column locking point with the structure of bottom bracket by changing steering column bracket, thus shorten the steering column distance to steering wheel section, and then regulate quality and the Stiffness Distribution situation of steering, it is achieved the raising of steering natural frequency.
The present invention has the effect improving steering natural frequency, in product development process, can be by few variation, adjust the natural frequency of steering fast and effectively, meet the requirement of different automobile types, state, thus be more easily implemented hardware and software platform and the generalization of steering, reduce development cost and construction cycle, and improve the NVH performance of steering, meet growing Driving and the requirement of safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of conventional steering tubing string.
Fig. 2 is the schematic diagram of traditional steering tube cornice adjustable mechanism structure.
Fig. 3 is the schematic diagram of steering column structure of the present invention.
Fig. 4 is 45 ° of schematic diagrams of traditional adjustable structure.
Fig. 5 is 45 ° of schematic diagrams of adjustable structure of the present invention.
In figure, 1-adjustable handle fixed plate, 2-steering column adjustable handle rotating shaft, the spacing U-shaped part of 3-steering column adjustable handle rotating shaft, 4-steering column bottom bracket, 5-steering column bracket, 6-steering column installing plate, 7-steering column install hard spot, 8-steering column bracket is adjustable chute, 9-steering column adjustment cam, 10-steering column.
Detailed description of the invention
The present invention is described further below in conjunction with the accompanying drawings.
Seeing Fig. 1, steering column traditional structure is to arrange that in steering column bracket 5 steering column installs hard spot 7, and all uses seam welding connection with the contact edge of steering column 10, and welding position includes bracket outward flange and inner port edge.This simple in construction, coupling stiffness is higher, and the mode of steering entirety is higher, but can not regulate the angle of steering column, and user can only drive under a design point.
See Fig. 2 and Fig. 4, this structure is by optimizing the steering column bracket 5 replaced in traditional structure and installing the invariant position of hard spot 7, ensure that steering column 10 is constant with the rigging position of miscellaneous part so that steering column has certain use function that can regulate steering wheel angle.This steering column adjustable structure is made up of parts such as adjustable handle fixed plate 1, steering column adjustable handle rotating shaft 2, the spacing U-shaped part 3 of steering column adjustable handle rotating shaft, steering column bottom bracket 4, steering column bracket 5, steering column installing plates 6.This steering column adjustable structure assembling mode is: steering column installing plate 6 is seam welding with steering column bracket 5；Steering column 10 is seam welding with steering column bottom bracket 4；Steering column subiculum 4 U-shaped part 3 spacing with steering column adjustable handle rotating shaft is seam welding；Steering column adjustable handle rotating shaft 2 is connected through adjustable chute, the spacing U-shaped part 3 of steering column adjustable handle rotating shaft and the adjustable handle fixed plate 2 in steering column bracket 5 by adjustment cam.Adjustment cam plays the locking effect of adjustable mechanism, and locking rear steering tubing string forms the duty of a kind of position, and the projector distance that its steering column locking point installs spline with steering wheel is defined as L.Show that the mode of steering is higher to the sensitivity of L through repeatedly analyzing, therefore the L dimension being unsatisfactory for the steering column adjustable structure that mode requires is optimized.
See Fig. 3, described inventive structure is based on above optimization, by changing the pattern of steering column bracket 5, the top edge making the upper and lower bracket of steering column moves on steering wheel direction, it is effectively shortened the length of L, and then change the Mass Distribution situation of whole steering column, thus reach to control the purpose of steering natural frequency.
Visible in conjunction with Fig. 3 and Fig. 5, a kind of structure of implementing of the present invention includes steering column bracket 5, steering column bottom bracket 4 and steering column installing plate 6.Having the installation hard spot 7 fixing with vehicle body on steering column installing plate 6, steering column bracket 5 is seam welding with steering column installing plate 6, steering column bracket 5 has the adjustable chute installing adjustable handle rotating shaft 2, is steering column locking point.Steering column 10 is seam welding with steering column bottom bracket 4, steering column bottom bracket 4 U-shaped part 3 spacing with rotating shaft is seam welding, steering column bracket 5, steering column bottom bracket 4 are connected by adjustable handle rotating shaft 2, and adjustable handle rotating shaft 2 is connected locking through adjustable chute, bottom bracket 4, the spacing U-shaped part 3 of rotating shaft and the adjustable handle fixed plate 1 in steering column bracket 5 by adjustment cam.In the present invention, the upper and lower bracket of steering column has one section of extension A towards the direction of steering column installation direction dish, adjustable chute on upper and lower bracket i.e. steering column locking point also moves with extension A and installs, to steering wheel, the position that spline is close, stagger with the position installing hard spot 7 on steering column installing plate, distance L1 between sustained height position, and steering column locking point and steering wheel is not less than distance L2 installed between hard spot 7 and steering wheel installation spline.
As further embodiment, steering column bracket 5 may be designed as n shape, its top is suitable with the axial length of steering column installing plate at the axial length of part seam welding with steering column installing plate 6, and bottom arrange the adjustable chute i.e. axial length of the part of steering column locking point to steering wheel install spline direction elongated, form one section of extension A.
Further, described steering column bottom bracket 4 is also n shape, is sandwiched in steering column bracket 5, and its top is recessed, welds steering column 10, and bottom is connected with steering column bracket 5, and its axial length is suitable with the axial length of steering column bracket 5 bottom.
From above structure, by moving on the local to steering column adjustable structure locking point position, change whole steering quality, the distribution situation of rigidity, the adjustment making steering natural frequency becomes simple, and on the premise of achieving guarantee performance, farthest achieve the generalization of steering, substantially reduce construction cycle and the development cost of steering.
Above content is to combine concrete preferred version to detailed description made for the present invention, it is impossible to the situation that is embodied as regarding as the present invention is limited only to these descriptions.In other case study on implementation of the unshowned present invention; each part shape of steering column can be differently configured from the above various piece; thus it is adapted to the requirement of concrete function, but remain to realize the control to steering natural frequency, all should belong to protection scope of the present invention.
Claims (3)
1. improve a steering column carrier structure for steering natural frequency, including bottom bracket, bracket and steering column installing plate；Having the installation hard spot fixing with vehicle body on described steering column installing plate, bracket is seam welding with steering column installing plate, bracket has the adjustable chute installing adjustable handle rotating shaft, as steering column locking point；Steering column body is seam welding with bottom bracket, and bottom bracket U-shaped part spacing with rotating shaft is seam welding；Bottom bracket, bracket are connected by adjustable handle rotating shaft, and adjustable handle rotating shaft is connected locking through adjustable chute, bottom bracket, the spacing U-shaped part of rotating shaft and the adjustable handle fixed plate in steering column bracket by adjustment cam；It is characterized in that: there is on the upper and lower bracket of described steering column one section of extension towards the direction of steering column installation direction dish, steering column locking point on upper and lower bracket also moves to the position close to steering wheel with extension, stagger with the position installing hard spot on steering column installing plate, not in sustained height position, and steering column locking point and steering wheel are installed distance L1 between spline and are less than distance L2 installed between hard spot and steering wheel.
The steering column carrier structure of raising steering natural frequency the most according to claim 1, it is characterized in that: described bracket is n shape, its top is suitable with steering column installing plate at the axial length of part seam welding with steering column installing plate, and the axial length of the part that bottom arranges steering column locking point is elongated to the direction of installation direction dish, form one section of extension.
The steering column carrier structure of raising steering natural frequency the most according to claim 2, it is characterized in that: described bottom bracket is also for n shape, it is sandwiched in bracket, its top is recessed, welding steering column, bottom is connected with bracket, and its axial length is suitable with the axial length of bracket bottom.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410430475.4A CN104149842B (en) | 2014-08-27 | 2014-08-27 | A kind of steering column carrier structure improving steering natural frequency |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410430475.4A CN104149842B (en) | 2014-08-27 | 2014-08-27 | A kind of steering column carrier structure improving steering natural frequency |
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| CN104149842B true CN104149842B (en) | 2016-11-16 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108622179A (en) * | 2018-06-28 | 2018-10-09 | 新乡艾迪威汽车科技有限公司 | A kind of electric steering column height adjustment seat |
| CN111666702B (en) * | 2020-06-08 | 2023-04-07 | 摩登汽车有限公司 | Method and device for optimizing mode of automobile steering system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201553192U (en) * | 2009-09-29 | 2010-08-18 | 沈阳市汽车开关厂 | Automobile steering column device with adjustable inclination angle |
| CN102120466A (en) * | 2010-01-07 | 2011-07-13 | 现代自动车株式会社 | Lower type motor driven column apparatus |
| CN102673632A (en) * | 2011-01-17 | 2012-09-19 | 万都株式会社 | Electric tilt steering apparatus for vehicle |
| CN103209879A (en) * | 2010-11-11 | 2013-07-17 | 戴姆勒股份公司 | Height-adjustable safety steering column assembly |
-
2014
- 2014-08-27 CN CN201410430475.4A patent/CN104149842B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201553192U (en) * | 2009-09-29 | 2010-08-18 | 沈阳市汽车开关厂 | Automobile steering column device with adjustable inclination angle |
| CN102120466A (en) * | 2010-01-07 | 2011-07-13 | 现代自动车株式会社 | Lower type motor driven column apparatus |
| CN103209879A (en) * | 2010-11-11 | 2013-07-17 | 戴姆勒股份公司 | Height-adjustable safety steering column assembly |
| CN102673632A (en) * | 2011-01-17 | 2012-09-19 | 万都株式会社 | Electric tilt steering apparatus for vehicle |
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| CN104149842A (en) | 2014-11-19 |
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