CN107878551A - Crumple energy-absorbing sleeve pipe, driving-shaft assembly and steering column and its energy-absorbing method - Google Patents
Crumple energy-absorbing sleeve pipe, driving-shaft assembly and steering column and its energy-absorbing method Download PDFInfo
- Publication number
- CN107878551A CN107878551A CN201610863640.4A CN201610863640A CN107878551A CN 107878551 A CN107878551 A CN 107878551A CN 201610863640 A CN201610863640 A CN 201610863640A CN 107878551 A CN107878551 A CN 107878551A
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- China
- Prior art keywords
- crumple
- piece
- energy
- sleeve pipe
- power transmission
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
- B62D1/192—Yieldable or collapsible columns
Abstract
The present invention relates to buffering energy-absorbing field, a kind of crumple energy-absorbing sleeve pipe, driving-shaft assembly, column assy and steering column crumple energy-absorbing method are provided, the crumple energy-absorbing sleeve pipe includes body and is fixed on the crumple piece of the body, wherein, the circumferential wall of the body is fixed in the bottom of the crumple piece, the circumferential wall that internally and/or externally protrudes from the body of the top of the crumple piece towards the body, also, crumple deformation can occur when by the power of the axis direction along the body for the crumple piece.Crumple energy-absorbing sleeve structure of the present invention is simple, manufacturing cost is low, and required arrangement space is small, and being capable of effective apparatus with shock absorbing.
Description
Technical field
The present invention relates to buffering energy-absorbing field, more particularly to a kind of crumple energy-absorbing sleeve pipe, driving-shaft assembly, steering column are total
Into with steering column crumple energy-absorbing method.
Background technology
The column assy of automobile is the parts for applying closure disk in the steering on automobile.With people
To vehicle safety requirement raising, it is desirable to column assy has certain crumple energy-absorbing function, so as to automobile occur
During collision, steering column can move crumple, reduce the injury to driver.
The structure type of the crumple energy absorption device of steering column in tradition mainly has insert shearing disengaged and steel wire change
Shape energy-absorption type, absorb collision energy by shearing insert and stretching steel wire.The crumple energy absorption device of above-mentioned steering column is being sent out
After raw collision crumple, original structure deforms so that the guidance quality of steering column is poor, and the stationarity of energy-absorbing is poor.
In addition, the crumple energy absorption device of above-mentioned steering column is complicated, it is necessary to take larger installing space, and assembly process is more
It is complicated.
Thus, it is desirable to have a kind of device can overcome or at least mitigate the drawbacks described above of prior art.
The content of the invention
In view of this, the present invention is directed to propose a kind of crumple energy-absorbing sleeve pipe, to simplify the structure of crumple energy absorption device.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of crumple energy-absorbing sleeve pipe, wherein, the crumple energy-absorbing sleeve pipe includes body and is fixed on the crumple of the body
Piece, wherein, the circumferential wall of the body is fixed in the bottom of the crumple piece, and the top of the crumple piece is towards the body
The circumferential wall of the body is internally and/or externally protruded from, also, the crumple piece is by the axis direction along the body
Power when can occur crumple deformation.
Further, the crumple energy-absorbing sleeve pipe includes the multiple crumples extended along the circumferential direction of the body
Piece, wherein, the crumple piece is formed as the elastic crumple piece of crimp extension；And/or the bottom of the crumple piece and the body
Circumferential wall it is tangent；And/or the circumferential direction along the body, each crumple piece extend towards same direction；And/or
The crumple energy-absorbing sleeve pipe includes the multiple crumple pieces for having multiple crumple pieces along the axis direction arranged for interval of the body
Group, circumferential direction of each crumple piece group along the body are evenly arranged.
Further, the crumple energy-absorbing sleeve pipe includes the multiple crumple pieces extended along the circumferential direction of the body
With the spaced apart multiple crumple pieces of axis direction along the body, and each crumple piece is towards the body
Internal crimp extension.
Further, the body is formed as circular body, also, is formed at the inner periphery of the first end of the body
Have the first guiding chamfering, axis direction of the crumple piece along the body close to the body first end and along the body
Circumferential wall of the radial direction away from the body side edge formed second guiding chamfering.
Further, multiple crumple pieces have different rigidity, surface roughness and/or the second guiding chamfering
Size.
Further, the interval between the bottom of each crumple piece and the first end of the body is less than the crumple piece
Top and the body first end between interval；And/or form what is be correspondingly arranged with the crumple piece on the body
Circumferential openings, the bottom of the crumple piece is connected in an axial edge of the circumferential openings, and the crumple piece court
Circumferentially extended to the tubular body to be gradually deviated from the circumferential openings, the axial width on the top of the crumple piece is less than institute
State the axial width of circumferential openings.
Relative to prior art, crumple energy-absorbing sleeve pipe of the present invention has the advantage that：
The above-mentioned crumple energy-absorbing sleeve pipe 5 of crumple energy-absorbing sleeve pipe of the present invention can be set in the outside of axle, when being sheathed on
When the miscellaneous part (such as pipe axle, sliding block etc.) of the axle is produced by impact and axle is relatively moved, the part can be with bursting
Crumple piece contact on contracting energy-absorbing sleeve pipe, the crumple of crumple piece and apparatus with shock absorbing, mitigate injury of the impact to equipment or personnel,
Wherein, the crumple energy-absorbing sleeve pipe is integrally formed into tube-like piece, corresponding with the shape of axle, can be to being moved by the part impacted
It is dynamic to play guiding function so that the movement of the part is more steady, and the crumple energy-absorbing sleeve pipe is sheathed on the outside of axle, reduces and bursts
Arrangement space needed for contracting energy absorption device.
Another object of the present invention is to propose a kind of driving-shaft assembly, to cause the driving-shaft assembly crumple energy absorption device
It is simple in construction, occupy little space.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of driving-shaft assembly, including power transmission shaft, the power transmission shaft include the first power transmission shaft being coaxially disposed and second and passed
Moving axis, one end of first power transmission shaft are formed as socket connection section, and one end of the second driving shaft is formed as being sheathed on institute
The socket linkage section of socket connection section periphery is stated, the second driving shaft can be relative along the axis direction of first power transmission shaft
Slid in first power transmission shaft, wherein, the driving-shaft assembly also includes according to crumple energy-absorbing sleeve pipe described above, described
Crumple energy-absorbing sleeve pipe coaxial sleeve is located at the periphery of the socket connection section, also, the socket connection section covers in succession away from described
The end of section is connect formed with set pipe mounting structure, the socket linkage section can slide onto at the crumple energy-absorbing sleeve pipe and to
The crumple piece applies the power along the axis direction of the body.
Further, when the elastic crumple piece of inside crimp extension of the body is formed towards in the crumple piece,
The internal diameter of the body is identical with the external diameter of the socket linkage section；Or it is formed towards the outer of the body in the crumple piece
During the elastic crumple piece of portion's crimp extension, the external diameter of the body is identical with the internal diameter of the socket linkage section, wherein, the bullet
Property crumple piece occur to be pressed on during crumple deformation on the socket linkage section.
Further, described sleeve pipe mounting structure includes positioning shaft shoulder and fixed part, and the second of the crumple energy-absorbing sleeve pipe
End is connected to the positioning shaft shoulder and is connected in the fixed part.
The driving-shaft assembly is same relative to Dominant Facies possessed by prior art with above-mentioned crumple energy-absorbing sleeve pipe, herein not
Repeat again.
Another object of the present invention is to provide a kind of column assy, to cause the column assy crumple energy-absorbing
Apparatus structure is simple, occupies little space.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of column assy, including the steering column that the first column jecket by being fixed together and the second column jecket are formed
Cylinder and the installation insert for the steering column casing to be installed on to vehicle body, wherein, the column assy also includes according to upper
Driving-shaft assembly described in text, first column jecket are sheathed on the periphery of first power transmission shaft, and second column jecket is sheathed on
The periphery of the second driving shaft, wherein, when the column assy is deformed by external force, the installation insert quilt
The socket linkage section contacts with the crumple piece while destruction.
The column assy is same relative to Dominant Facies possessed by prior art with above-mentioned driving-shaft assembly, herein not
Repeat again.
Another object of the present invention is to provide a kind of steering column crumple energy-absorbing method, to cause bursting for the steering column
Contracting energy-absorbing is more stable, and endergonic structure is simple.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of steering column crumple energy-absorbing method, wherein, the steering column crumple energy-absorbing method includes：By what is impacted
One termination of the crumple piece that circumferencial direction along power transmission shaft of the power transmission shaft axial movement first with being positioned on installation foundation extends
Touch to force crumple piece to deform, and with the movement of the power transmission shaft, the outward flange of the power transmission shaft and the crumple piece by
Gradually contact, until contacting the other end of the crumple piece to force the crumple piece overall deformation.
Further, the outer peripheral face of the power transmission shaft comes into contact with the inner rim met to the power transmission shaft of the crumple piece
Edge.
Further, after the power transmission shaft forces the crumple piece overall deformation, the crumple piece returns in natural resiliency
Press in the presence of multiple power along the circumferencial direction of the power transmission shaft in the periphery of the power transmission shaft.
Steering column crumple energy-absorbing method of the present invention gradually to be contacted with crumple piece by the power transmission shaft impacted,
Make the steady crumple of crumple piece, and avoid damaging crumple piece.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply mode and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the schematic cross-sectional view of the column assy according to one embodiment of the present invention；
Fig. 2 is the schematic diagram of the crumple energy-absorbing sleeve pipe according to one embodiment of the present invention；
Fig. 3 is the schematic side view of the crumple energy-absorbing sleeve shown in Fig. 2；
Fig. 4 is the schematic diagram according to the driving-shaft assembly of one embodiment of the present invention, wherein, the second driving shaft
Slide onto the inside of the crumple energy-absorbing sleeve pipe；
The schematic cross-sectional view of driving-shaft assembly shown in Fig. 5 Fig. 4.
Description of reference numerals：
1- turns to column casing, the column jeckets of 11- first, the column jeckets of 12- second, 2- power transmission shafts, the power transmission shafts of 21- first；211- grafting connects
Connect section, 212- positioning shaft shoulders, 22- second driving shafts, 221- socket linkage sections, 3- installation inserts, 4- adjustment structures, 5- crumples suction
Energy sleeve pipe, 51- bodys, 52- crumple pieces, 53- first guide chamfering, and 54- second guides chamfering, 55- circumferential openings, 6- bearings.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can
To be mutually combined.
Below with reference to the accompanying drawings and embodiment is combined to describe the present invention in detail.
According to an aspect of the present invention, there is provided a kind of crumple energy-absorbing sleeve pipe, the crumple energy-absorbing sleeve pipe 5 include body 51
With the crumple piece 52 for being fixed on body 51, wherein, the circumferential wall of body 51, the top of crumple piece 52 are fixed in the bottom of crumple piece 52
The circumferential wall for internally and/or externally protruding from body 51 towards body 51 is held, also, crumple piece 52 is by along body 51
Crumple deformation can occur during the power of axis direction.
Above-mentioned crumple energy-absorbing sleeve pipe 5 can be set in the outside of axle, when be sheathed on the axle miscellaneous part (such as pipe axle,
Sliding block etc.) by impact produce with axle relatively moved when, the part can connect with the crumple piece 52 on crumple energy-absorbing sleeve pipe 5
Touch, the crumple of crumple piece 52 and apparatus with shock absorbing, mitigate injury of the impact to equipment or personnel, wherein, the crumple energy-absorbing sleeve pipe 5
Tube-like piece is integrally formed into, it is corresponding with the shape of axle, can be to being played guiding function by the movement of the part impacted so that
The movement of the part is more steady, and the crumple energy-absorbing sleeve pipe 5 is sheathed on the outside of axle, reduces the cloth needed for crumple energy absorption device
Between being empty.
The construction and arrangement mode of crumple piece 52 can carry out any appropriate selection according to being actually needed, and can rushed
Crumple absorbs energy when hitting.Preferably, crumple energy-absorbing sleeve pipe 5 is included along the multiple described of the circumferential direction extension of body 51
Crumple piece 52.
Crumple piece 52 can be connected in the side wall by the part impacted after crumple deformation, and the part is continued to move
Movable property gives birth to frictional resistance, prevents to be continued to move to by the part impacted.In order to further improve crumple piece 52 to being impacted
Part frictional resistance, crumple piece 52 is formed as the elastic crumple piece of crimp extension, can be after the crumple of crumple piece 52 deformation
The surface by the part impacted is compressed in the presence of natural resiliency restoring force, improves resistance of the crumple piece 52 to the part.And
And elastic crumple piece can be recovered to original state by after blastic deformation after part removal so that the energy of crumple energy-absorbing sleeve pipe 5
Enough it is used for multiple times, reduces use cost.
Preferably, the bottom of crumple piece 52 and the circumferential wall of body 51 are tangent, to realize the flat of crumple piece 52 and body 51
Slip over and cross, avoid the stress concentration of the two joint place.
Referring to Fig. 2, along the circumferential direction of body 51, each crumple piece 52 extends towards same direction, is easy to crumple piece
52 arrangement, and cause the parts such as pipe axle to act on drag uniform distribution suffered when on crumple piece 52.
Preferably, crumple energy-absorbing sleeve pipe 5 includes having the more of multiple crumple pieces 52 along the axis direction arranged for interval of body 51
Individual crumple piece group, circumferential direction of each crumple piece group along body 51 are evenly arranged.Along the bearing of trend arranged for interval of body 51
Multiple crumple pieces 52 can with the gradual absorption tube crumple apparatus with shock absorbing, and each successively by the part impacted
Crumple piece group is arranged circumferentially along body 51, ensures the circumferential uniform force along body 51 by the part impacted so that
The crumple process of crumple energy-absorbing set 5 is steady.Referring to Fig. 2 and 5, the crumple piece 52 of each crumple piece group is along crumple energy-absorbing sleeve pipe 5
Axis direction aligns, and to cause by the part impacted and the crumple piece on same plane while contact, avoids unbalance stress.Ginseng
See Fig. 3, crumple energy-absorbing set 5 includes two groups of crumple piece groups, from the point of view of one end by crumple energy-absorbing sleeve pipe 5, in a crumple piece group
Crumple piece 52 is symmetrical on crumple energy-absorbing cannula center axis with the crumple piece 52 in another crumple piece group.
Preferably, crumple energy-absorbing sleeve pipe 5 includes the multiple crumple pieces 52 extended along the circumferential direction of body 51 and along body
The 51 spaced apart multiple crumple pieces 52 of axis direction, multiple multi-angles of crumple piece 52 successively with by the component contact impacted
And crumple deformation apparatus with shock absorbing so that crumple energy-absorbing sleeve pipe 5 being capable of more preferable apparatus with shock absorbing.
Crumple piece 52 can extend towards the outside of body 51 or inwall, and user can selection is appropriate to prolong according to being actually needed
Mode is stretched, wherein, when outside extension of the crumple piece 52 towards body 51, it can be progressively enclosed on crumple by the part impacted and inhale
Outside energy sleeve pipe 5；Crumple piece 52 towards body 51 inside extension when, can progressively be inserted crumple energy-absorbing by the part impacted
Between sleeve pipe 5 and axle.
Referring to Fig. 2 and Fig. 3, each crumple piece 52 prolongs preferably towards the inside curling of body 51 in the shown embodiment
Stretch, the structure is particularly suitable for use in the steering spindle of vehicle, specifically, referring to the preferred embodiment shown in Fig. 1 and Fig. 4, by crumple
Energy-absorbing sleeve pipe 5 is sheathed on the first power transmission shaft 21, is driven when second driving shaft 22 (being formed as pipe axle) receives impact towards first
Axle 21 can be inserted between the first power transmission shaft 21 and crumple energy-absorbing sleeve pipe 5 when moving, and in the moving process along the first power transmission shaft 21
In cause the crumple of crumple piece 52 deformation, absorb second driving shaft 22 impact energy.When crumple piece 52 is elastic crumple piece, insert
Entering the second driving shaft 22 between the first power transmission shaft 21 and crumple energy-absorbing sleeve pipe 5 can be compressed by crumple piece 52, avoid power transmission shaft
Elongation causes secondary injury again.
The shape of body 51 can be sheathed on the outside of axle according to the selection of progress suitably is actually needed and cause crumple
Piece 52 can absorb corresponding impact energy.Preferably, body 51 is formed as circular body, more sticks on the profile of axle
Close.Also, referring to Fig. 2, formed with the first guiding chamfering 53 at the inner periphery of the first end of body 51, crumple piece 52 is along body
The side of the circumferential wall of first end of 51 axis direction close to body 51 and the radial direction along body 51 away from body 51
Edge forms the second guiding chamfering 54, and the first guiding chamfering 53 can guide smoothly the first power transmission shaft of insertion of second driving shaft 22
Between 21 and crumple energy-absorbing sleeve pipe 5, the second guiding chamfering 54 is then advantageous to the first power transmission shaft 21 and gradually opens crumple piece 52 in top so that
Crumple process is more steady.
Each crumple piece 52 may be configured as it is identical, in order to the manufacturing of crumple energy-absorbing sleeve pipe 5.It is contemplated that
Entrained impact energy and impact velocity of the second driving shaft 22 in moving process constantly change, it is preferred that multiple
Crumple piece 52 have different rigidity, surface roughness and/or second guiding chamfering 54 size, each crumple piece 52 it is firm
The size of degree, surface roughness and/or the second guiding chamfering 54 can carry out any appropriate setting according to actual conditions, with adjustment
Go out suitable crumple curve, realize optimized buffer energy-absorbing effect.
Preferably, top of the interval between the bottom of each crumple piece 52 and the first end of body 51 less than the crumple piece 52
Interval between end and the first end of body 51, to cause second driving shaft 22 first to be contacted with the bottom of crumple piece 52, Ran Houzai
Gradually with the tip contact of crumple piece 52, avoid contacting the damage for causing crumple piece with the entirety of crumple piece 52 suddenly, and further
Improve the stationarity of crumple process.
Preferably, the circumferential openings 55 being correspondingly arranged with crumple piece 52 are formed on body 51, to mitigate crumple energy-absorbing sleeve pipe 5
Quality, be advantageous to light-weight design, reduce the manufacturing cost of crumple energy-absorbing sleeve pipe 5.Wherein, the bottom of crumple piece 52 is connected to
In one axial edge of circumferential openings 55, and crumple piece 52 extends towards the internal circumferential of body 51 to be gradually deviated from circumferential open
Mouth 55, the axial width on the top of crumple piece 52 are less than the axial width of circumferential openings 55.Referring to Fig. 2, Fig. 4 and Fig. 5, when second
When power transmission shaft 22 is not inserted between crumple energy-absorbing sleeve pipe 5 and the first power transmission shaft 21, crumple piece 52 is towards in crumple energy-absorbing sleeve pipe 5
Portion is offset, and when second driving shaft 22 is inserted between crumple energy-absorbing sleeve pipe 5 and the first power transmission shaft 21, crumple piece 52 is in the second transmission
Outside crumple in the presence of axle 22, and be contained in just in circumferential openings 55.
According to another aspect of the present invention, there is provided a kind of driving-shaft assembly, including power transmission shaft, power transmission shaft 2 include coaxial
The first power transmission shaft 21 and second driving shaft 22 set, one end of the first power transmission shaft 21 are formed as socket connection section 211, and second passes
One end of moving axis 22 is formed as being sheathed on the socket linkage section 221 of the periphery of socket connection section 211, and second driving shaft 22 can be along
The axis direction of one power transmission shaft 21 slides relative to the first power transmission shaft 21, and the driving-shaft assembly also includes according to described above
Crumple energy-absorbing sleeve pipe 5, the coaxial sleeve of crumple energy-absorbing sleeve pipe 5 is located at the periphery of socket connection section 211, also, socket connection section 211 is remote
End from socket linkage section 221 can slide onto crumple energy-absorbing sleeve pipe formed with set pipe mounting structure, socket linkage section 221
Apply the power of the axis direction along body 51 at 5 and to crumple piece 52, can be absorbed when second driving shaft 22 is impacted
The impact energy of second driving shaft 22.
The size of body 51 can carry out appropriate setting according to the bearing of trend of crumple piece 51, when crumple piece 52 is towards body
During 51 inside extension, the internal diameter of body 51 is more than or equal to the external diameter of socket linkage section 221；When crumple piece 52 is towards body 51
It is outside when extending, the external diameter of body 51 is less than or equal to the internal diameter of socket linkage section 221.
Preferably, when the elastic crumple piece of inside crimp extension of body 51 is formed towards in crumple piece 52, body 51
Internal diameter it is identical with the external diameter for being socketed linkage section 221, elastic crumple piece occurs that during crumple deformation socket linkage section can be pressed on
On 221, ensure that crumple process is steady.Referring to shown in Fig. 1, Fig. 4 and Fig. 5, the coaxial sleeve of body 51 is located at socket connection section 211
Periphery, when second driving shaft 22 is impacted, socket linkage section 221 inserts crumple energy-absorbing sleeve pipe 51 and socket connection section 211
Between, circumference of the elastic crumple piece along second driving shaft 22 is pressed in the periphery of socket linkage section 221, avoids second driving shaft 22
Return back to initial position.
Preferably, when the elastic crumple piece of outside crimp extension of body 51 is formed towards in crumple piece 52, body 51
External diameter it is identical with the internal diameter for being socketed linkage section 221, elastic crumple piece occurs that during crumple deformation socket linkage section can be pressed on
On 221, ensure that crumple process is steady.By the coaxial sleeve of body 51 be located at socket connection section 211 periphery, when second driving shaft 22 by
To during impact, socket linkage section 221 is enclosed on the periphery of crumple energy-absorbing sleeve pipe 51, and elastic crumple piece is pressed along the circumference of second driving shaft 22
Tightly in the inwall of socket linkage section 221, second driving shaft 22 is avoided to return back to initial position.
Crumple energy-absorbing sleeve pipe 5 is installed on the first power transmission shaft 21, the tool of described sleeve pipe mounting structure by covering pipe mounting structure
Body structure can arbitrarily be set according to being actually needed.Preferably, described sleeve pipe mounting structure includes positioning shaft shoulder 212 and consolidated
Determine portion, the second end of crumple energy-absorbing sleeve pipe 5 is connected to positioning shaft shoulder 212 and is connected in the fixed part, and positioning shaft shoulder 212 is along
The axis direction positioning crumple energy-absorbing sleeve pipe 5 of one power transmission shaft 21, fixed part can be along the circumferentially positioned crumple of the first power transmission shaft 21
Energy-absorbing sleeve pipe 5.Shown in Figure 1, in the shown embodiment, fixed part is formed as the mistake of body 51 with crumple energy-absorbing sleeve pipe 5
It is full of the boss of connection, crumple energy-absorbing sleeve pipe 5 is connected and fixed.
According to another aspect of the present invention, a kind of column assy, referring to Fig. 1, including by being fixed together
The first column jecket 11 and the steerings column casing 1 that is formed of the second column jecket 12 and for steering column casing 1 to be installed on into the installation insert of vehicle body
3, wherein, the column assy also includes being sheathed on the first biography according to driving-shaft assembly described above, the first column jecket 11
The periphery of moving axis 21, the second column jecket 12 are sheathed on the periphery of second driving shaft 22, wherein, in the column assy by outer
When power deforms, socket linkage section 221 contacts with crumple piece 52 while installation insert 3 is destroyed, and ensures that buffering second passes
The continuity of the process of moving axis 22.
The first power transmission shaft 21 and second driving shaft 22 of power transmission shaft 2 are installed on the first column jecket 11 and by bearing 6 respectively
Two column jeckets 12, when a collision occurs, external force force second driving shaft 22 to be moved to regulation lower position first, and external force continues to make
With the shear pin that column casing 1 is turned to for installing and installation insert 3 for being fixedly installed on second tubing string 12 are destroyed, and collision enters
The crumple stage, wherein, second driving shaft 22 contacts with first crumple piece 52 just while installation insert 3 is destroyed, and ensures
Journey continuity.Then, second driving shaft 22 progresses into the inside of crumple energy-absorbing sleeve pipe 5, and the stress of crumple piece 52 is opened and is close to
On the outer wall of second driving shaft 22, crumple energy-absorbing sleeve pipe 5 has good guidance quality, the crumple of crumple piece 52 during crumple
Collision energy is converted into the elastic potential energy of frictional heat energy and crumple piece 52 in journey.If collision continues, then second driving shaft 22
Crumple energy-absorbing sleeve pipe 5 is gone successively to, the crumple piece 52 arranged along the axis direction of crumple energy-absorbing sleeve pipe 5 is extruded opening simultaneously successively
The outer wall of second driving shaft 22 is pressed on, until socket connection section of the end abutment of second driving shaft 22 in the first power transmission shaft 21
211 end can not continue to move to, referring to shown in Fig. 4 and Fig. 5.
According to a further aspect of the invention, there is provided a kind of steering column crumple energy-absorbing method, the steering column crumple
Energy-absorbing method includes：By the first circumference side along power transmission shaft with being positioned on installation foundation of power transmission shaft axial movement impacted
To the end thereof contacts of the crumple piece of extension to force crumple piece to deform, and with the movement of the power transmission shaft, the power transmission shaft
Come into contact with the outward flange of the crumple piece, until contacting the other end of the crumple piece to force the crumple piece integrally to become
Shape.
Above-mentioned steering column crumple energy-absorbing method can ensure the stationarity of crumple piece crumple deformation process, avoid crumple piece
Caused crumple piece to be damaged by overall impact suddenly, and make it that crumple piece is more flat to the buffering for receiving the power transmission shaft of impact
Surely.
Preferably, the outer peripheral face of the power transmission shaft comes into contact with the inner rim met to the power transmission shaft of the crumple piece
Edge so that the outer peripheral face of power transmission shaft can be pressed on after crumple piece crumple deformation, continues to move to produce friction resistance to power transmission shaft
Power.
Preferably, after the power transmission shaft forces the crumple piece overall deformation, the crumple piece is replied in natural resiliency
Press in the presence of power along the circumferencial direction of the power transmission shaft in the periphery of the power transmission shaft.Because crumple piece is elastic crumple
Piece, it can return back to original state after by blastic deformation in the presence of selfer power so that the crumple piece can
It is used for multiple times, reduces the use cost of crumple piece.Further, since the flexible restoring force of crumple piece itself, the elastic-restoring force
It can act on the outer peripheral face of power transmission shaft, the resistance of movement of the increase crumple piece to power transmission shaft.
The better embodiment of the present invention is the foregoing is only, is not intended to limit the invention, it is all the present invention's
Within spirit and principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (10)
1. a kind of crumple energy-absorbing sleeve pipe, it is characterised in that the crumple energy-absorbing sleeve pipe (5) includes body (51) and is fixed on described
The crumple piece (52) of body (51), wherein, the circumferential wall of the body (51) is fixed in the bottom of the crumple piece (52), described
The top of crumple piece (52) towards the body (51) the circumferential wall for internally and/or externally protruding from the body (51), and
And crumple deformation can occur when by the power of the axis direction along the body (51) for the crumple piece (52).
2. crumple energy-absorbing sleeve pipe according to claim 1, it is characterised in that the crumple energy-absorbing sleeve pipe (5) is included along institute
Multiple crumple pieces (52) of the circumferential direction extension of body (51) are stated, wherein,
The crumple piece (52) is formed as the elastic crumple piece of crimp extension；And/or the bottom of the crumple piece (52) with it is described
The circumferential wall of body (51) is tangent；And/or the circumferential direction along the body (51), each crumple piece (52) is towards same
One direction extends；And/or the crumple energy-absorbing sleeve pipe (5) is multiple including having along the axis direction arranged for interval of the body (51)
Multiple crumple piece groups of the crumple piece (52), circumferential direction uniform cloth of each crumple piece group along the body (51)
Put.
3. crumple energy-absorbing sleeve pipe according to claim 1, it is characterised in that the crumple energy-absorbing sleeve pipe (5) is included along institute
State multiple crumple pieces (52) of the circumferential direction extension of body (51) and the axis direction interval cloth along the body (51)
The multiple crumple pieces (52) put, and each crumple piece (52) is towards the inside crimp extension of the body (51).
4. the crumple energy-absorbing sleeve pipe according to any one in claim 1-3, it is characterised in that the body (51) is formed
It is described to burst for circular body, also, formed with the first guiding chamfering (53) at the inner periphery of the first end of the body (51)
Axis direction of the contracting piece (52) along the body (51) close to the body (51) first end and along the footpath of the body (51)
The second guiding chamfering (54) is formed to the edge of the side of circumferential wall of the direction away from the body (51).
5. the crumple energy-absorbing sleeve pipe according to any one in claim 1-3, it is characterised in that each crumple piece
(52) interval between bottom and the first end of the body (51) is less than the top of the crumple piece (52) and the body
(51) the interval between first end；And/or
The circumferential openings (55) being correspondingly arranged with the crumple piece (52) are formed on the body (51), the crumple piece (52)
Bottom is connected in an axial edge of the circumferential openings (55), and the crumple piece (52) is towards the body (51)
Internal circumferential extension is to be gradually deviated from the circumferential openings (55), and the axial width on the top of the crumple piece (52) is less than described
The axial width of circumferential openings (55).
6. a kind of driving-shaft assembly, including power transmission shaft, the power transmission shaft (2) includes the first power transmission shaft (21) being coaxially disposed and the
Two power transmission shafts (22), one end of first power transmission shaft (21) are formed as socket connection section (211), the second driving shaft (22)
One end be formed as being sheathed on the socket linkage section (221) of socket connection section (211) periphery, the second driving shaft (22)
It can be slid along the axis direction of first power transmission shaft (21) relative to first power transmission shaft (21), it is characterised in that institute
Driving-shaft assembly is stated also including the crumple energy-absorbing sleeve pipe (5) according to any one in claim 1-5, the crumple energy-absorbing
Sleeve pipe (5) coaxial sleeve is located at the periphery of the socket connection section (211), also, the socket connection section (211) is away from the set
The crumple can be slid onto formed with set pipe mounting structure, the socket linkage section (221) by connecing the end of linkage section (221)
Energy-absorbing sleeve pipe (5) place simultaneously applies the power along the axis direction of the body (51) to the crumple piece (52).
7. driving-shaft assembly according to claim 6, it is characterised in that
In the elastic crumple piece for the inside crimp extension that the crumple piece (52) is formed towards the body (51), the pipe
The internal diameter of body (51) is identical with the external diameter of the socket linkage section (221)；Or
In the elastic crumple piece for the outside crimp extension that the crumple piece (52) is formed towards the body (51), the pipe
The external diameter of body (51) is identical with the internal diameter of the socket linkage section (221),
Wherein, the elastic crumple piece occurs to be pressed on during crumple deformation on the socket linkage section (221).
8. the driving-shaft assembly according to claim 6 or 7, it is characterised in that described sleeve pipe mounting structure includes locating shaft
Shoulder (212) and fixed part, the second end of the crumple energy-absorbing sleeve pipe (5) are connected to the positioning shaft shoulder (212) and are connected in institute
State fixed part.
9. a kind of column assy, including the first column jecket (11) by being fixed together and the second column jecket (12) are formed
Turn to column casing (1) and the installation insert (3) for the steering column casing (1) to be installed on to vehicle body, it is characterised in that the steering
Tubing string assembly also includes the driving-shaft assembly according to any one in claim 6-8, and first column jecket (11) is arranged
In the periphery of first power transmission shaft (21), second column jecket (12) is sheathed on the periphery of the second driving shaft (22), its
In, when the column assy is deformed by external force, the installation insert (3) is described while being destroyed to be covered in succession
Section (221) is connect to contact with the crumple piece (52).
10. a kind of steering column crumple energy-absorbing method, it is characterised in that the steering column crumple energy-absorbing method includes：By
The crumple piece that circumferencial direction along power transmission shaft of the power transmission shaft axial movement of impact first with being positioned on installation foundation extends
For end thereof contacts to force crumple piece to deform, and with the movement of the power transmission shaft, the power transmission shaft is outer with the crumple piece
Edge comes into contact with, until the other end of the crumple piece is contacted to force the crumple piece overall deformation, when the power transmission shaft
After forcing the crumple piece overall deformation, the crumple piece is in the presence of natural resiliency restoring force along the circumference of the power transmission shaft
Press in the periphery of the power transmission shaft in direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610863640.4A CN107878551B (en) | 2016-09-29 | 2016-09-29 | Collapse energy-absorbing sleeve, transmission shaft assembly, steering column and energy-absorbing method of collapse energy-absorbing sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610863640.4A CN107878551B (en) | 2016-09-29 | 2016-09-29 | Collapse energy-absorbing sleeve, transmission shaft assembly, steering column and energy-absorbing method of collapse energy-absorbing sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107878551A true CN107878551A (en) | 2018-04-06 |
| CN107878551B CN107878551B (en) | 2020-02-28 |
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ID=61769722
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610863640.4A Active CN107878551B (en) | 2016-09-29 | 2016-09-29 | Collapse energy-absorbing sleeve, transmission shaft assembly, steering column and energy-absorbing method of collapse energy-absorbing sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107878551B (en) |
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| Publication number | Publication date |
|---|---|
| CN107878551B (en) | 2020-02-28 |
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