CN113212535A - Vehicle and steering column assembly thereof - Google Patents
Vehicle and steering column assembly thereof Download PDFInfo
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- CN113212535A CN113212535A CN202110624593.9A CN202110624593A CN113212535A CN 113212535 A CN113212535 A CN 113212535A CN 202110624593 A CN202110624593 A CN 202110624593A CN 113212535 A CN113212535 A CN 113212535A
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- energy absorbing
- steering column
- protrusion
- recess
- column assembly
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- 238000010521 absorption reaction Methods 0.000 claims abstract description 32
- 230000033001 locomotion Effects 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 208000027418 Wounds and injury Diseases 0.000 description 13
- 230000000694 effects Effects 0.000 description 6
- 239000006096 absorbing agent Substances 0.000 description 5
- 230000009172 bursting Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 208000014674 injury Diseases 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000020347 spindle assembly Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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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
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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
- B62D1/185—Steering columns yieldable or adjustable, e.g. tiltable adjustable by axial displacement, e.g. telescopically
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- Combustion & Propulsion (AREA)
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- Mechanical Engineering (AREA)
- Steering Controls (AREA)
Abstract
The invention belongs to the technical field of vehicles, and aims to solve the problem that the conventional steering column is not enough in supporting force due to the fact that the collapse peak force is too small and the steering column is easy and too fast to collapse in a mode of providing the collapse peak force by a rivet. To this end, the present invention provides a steering column assembly for a vehicle, comprising: a first tubular string; a second string, the first string and the second string being connected to each other; the energy absorption piece is connected with the first pipe column and moves axially relative to the second pipe column along with the first pipe column when the steering pipe column assembly is collapsed; and the mounting assembly is fixedly arranged, the mounting assembly and the energy absorbing piece are connected through a rivet and clamped with each other through a clamping structure, and the rivet and the clamping structure jointly provide collapse peak force for the energy absorbing piece. When a vehicle is collided and the steering column assembly collapses, the support function of the vehicle during collapsing can be improved, and the design size can be adjusted conveniently and flexibly.
Description
Technical Field
The invention belongs to the technical field of vehicles, and particularly provides a vehicle and a steering column assembly thereof.
Background
The steering column of the vehicle is an important part for connecting a steering wheel and a steering gear in a steering system of the vehicle, and can transmit the rotating force of a driver to the steering wheel to an intermediate shaft and the steering gear and finally to a gear train part so as to finish the steering of the vehicle. A conventional steering column generally includes a column assembly and a rotary shaft assembly provided in the column assembly, the rotary shaft assembly connecting a steering wheel with a steering gear. Along with the continuous development of vehicle technique and the continuous increase of user's demand, the user also constantly improves to the functional demand of steering wheel, for example, needs the steering wheel utensil to possess automatic lifting function, and the mode that adopts among the prior art adopts a plurality of tubular columns form of cup jointing each other for the tubular column subassembly, realizes the flexible of tubular column subassembly through relative movement each other between each tubular column, and then realizes the lift of steering wheel.
When a vehicle collides, the head and the chest of a driver can move towards the steering wheel under the action of impact, acting force can be applied to the steering wheel after the driver contacts with the steering wheel, and in order to avoid the injury of the steering wheel to the driver, a crumple energy-absorbing structure can be arranged in a steering system to absorb the impact force of the driver to the steering wheel. There are many ways of providing a crumple energy absorption structure in the prior art, one way is to provide the crumple energy absorption structure between the columns of the column assembly, for example, patent document No. 201721863123.3 discloses an internal crumple energy absorption structure of an automobile steering column, which specifically comprises an upper column tube, an axial rack, an energy absorption belt and a lower column tube, wherein an axial adjusting positioning hole on the upper column tube is matched with the axial rack, one end of the energy absorption belt is welded and fixed with the axial rack after being bent inwards, the energy absorption belt is fixed with the lower column tube by a rivet, when crumpling occurs, the upper column tube and the axial rack are crumpled together, the axial rack drives the energy absorption belt to be separated from the rivet, so as to provide a peak force during crumpling, and then a stable crumple holding force is provided by the curling deformation of a steel belt, the mode of providing the crumple peak force by the rivet alone can make the crumple peak force too small, the steering column collapses too easily and too quickly, resulting in insufficient support force for the steering column, and the rivet size is not convenient to adjust, and may not meet the use requirements under the performance limit condition.
Accordingly, there is a need in the art for a new vehicle and steering column assembly therefor that addresses or ameliorates, to some extent, the above-identified problems.
Disclosure of Invention
In order to solve or improve the above problems in the prior art to a certain extent, that is, the conventional steering column adopts a mode of providing the collapse peak force by a rivet alone, so that the collapse peak force is too small, the steering column is too easy and too fast to collapse, the supporting force of the steering column is further insufficient, the size of the rivet is inconvenient to adjust, and the use requirement may not be met under the performance limit condition, the invention provides a steering column assembly of a vehicle, comprising: a first tubular string; a second string, wherein the first string and the second string are connected to each other; the energy absorption piece is connected with the first tubular column and moves along the first tubular column relative to the second tubular column when the steering tubular column assembly is collapsed; and a fixedly arranged mounting assembly, wherein the mounting assembly and the energy absorbing piece are connected through a rivet and clamped with each other through a clamping structure, and the rivet and the clamping structure jointly provide the collapse peak force for the energy absorbing piece.
Through such setting, make when the vehicle bumps and steering column assembly bursts, the rivet is put the structure with the card and can provide the peak force that bursts jointly, initial burst power promptly, compare in the mode that adopts the rivet alone and can further increase the peak force that bursts that contracts, avoid steering column too easily and take place to burst too soon, improve steering column's supporting role, keep it to possess sufficient holding power, and adopt the design that rivet and the design that these two kinds of structures of card put the structure and combine together can nimble adjustment both respectively design size, avoid the condition that can't satisfy the operation requirement to appear in the single structure under the condition of performance limit.
In the above preferred technical solution of the steering column assembly, the steering column assembly further includes a driving device, the driving device drives the first column to move axially relative to the second column, wherein the first column is sleeved in the second column, and a through groove is formed on a side wall of the second column, so that the energy absorbing member radially penetrates through the through groove to be connected with the first column, the mounting assembly includes a connecting bracket and a cover plate connected with each other, the connecting bracket is connected with an output end of the driving device, the cover plate is connected with the energy absorbing member through a rivet, and the cover plate and the energy absorbing member together form a clamping structure.
Through such setting, logical groove on the second tubular column lateral wall can guarantee that energy-absorbing spare is connected with first tubular column to for the energy-absorbing stroke that contracts of bursting provides the structure basis, make holistic structure compacter simultaneously. Simultaneously, drive arrangement can initiatively adjust the height of steering wheel and when adjusting the height of steering wheel, the rivet can provide the driving force of first tubular column for the second tubular column with the card structure under drive arrangement's drive effect together, avoids the rivet to provide the driving force alone to help improving the stability of first tubular column motion. The rivet and a part of the clamping structure are arranged on the cover plate, so that the structure can be further simplified, namely, the rivet can be installed through the independent cover plate, and the part of the clamping structure is arranged, so that the whole structure is more compact.
In a preferred embodiment of the steering column assembly, the latching structure includes a latching recess formed on the energy absorbing member and a latching protrusion formed on the cover plate, and the latching recess and the latching protrusion are in latching engagement.
Through such setting for put sunken putting through the card and the card puts bellied card and put the cooperation and can provide partly the peak force that contracts of bursting, guarantee to put sunken, the card when vehicle bumps and the steering column assembly bursts to contract and put the arch and can increase the peak force that contracts with the rivet together, avoid steering column too easy and too fast to take place to burst to contract, improve steering column's supporting role, keep it to possess sufficient holding power.
In the preferred technical scheme of the steering column assembly, the energy absorption piece is an energy absorption belt, the cover plate is connected with a pin, and the energy absorption belt is wound on the pin.
Through such setting for after steering column assembly bursts and contracts and the card is put protruding and card and is put sunken separation each other and rivet and is cut by the shear force, the energy-absorbing area can be straightened under the effect of blockking of pin, continuously provides the maintenance of bursting and contracts, guarantees that the energy-absorbing area can last the energy-absorbing, avoids the steering wheel to cause the injury to the driver.
In a preferred embodiment of the steering column assembly, the energy absorbing band includes a first portion and a second portion connected to each other, the first portion being wound around the pin, the second portion being connected to the first column, the second portion being connected to the cover plate by a rivet, and the latching recess being formed in the second portion.
Through such setting for mainly cooperate between the second portion in energy-absorbing zone and the apron and provide great the peak force that contracts of bursting, the first portion in energy-absorbing zone mainly cooperates with the pin and provides the holding power that contracts of bursting, not only improves steering column's supporting role, keeps it to possess sufficient holding power, guarantees moreover that the energy-absorbing zone can last the energy-absorbing, avoids the steering wheel to cause the injury to the driver.
In the above-described steering column assembly, the first end of the first portion is connected to the first end of the second portion, and the extending direction of the second end of the first portion is parallel to the extending direction of the second end of the second portion.
Through such setting, make can increase the area of contact between energy-absorbing area and the pin after the energy-absorbing area is around locating the pin, guarantee to put protruding and the card and put sunken separation each other and the rivet is cut off by the shear force at the card, the energy-absorbing area can be further fully straightened under the effect of blockking of pin, continuously provide stable collapse holding power, make the energy-absorbing area fully energy-absorbing, further improve the energy-absorbing effect in energy-absorbing area, avoid the steering wheel to cause the injury to the driver.
In the above-mentioned preferred technical scheme of steering column assembly, the clamping recess includes a first recess and a second recess formed on both sides of the second portion, respectively, and the clamping protrusion includes a first protrusion and a second protrusion formed on the cover plate and located on both sides of the second portion, respectively, the first protrusion is clamped with the first recess, and the second protrusion is clamped with the second recess.
Through the arrangement, the energy absorption belt can be clamped from two sides of the energy absorption belt, clamping force on two sides of the energy absorption belt is balanced when the clamping protrusion and the clamping recess are clamped with each other, and the energy absorption belt can be prevented from deflecting or warping when the clamping protrusion and the clamping recess are separated from each other, so that subsequent normal energy absorption of the energy absorption belt is influenced.
In a preferred embodiment of the steering column assembly, the width of the first portion is greater than the width of the second portion, and the width of the first portion is greater than the minimum distance between the first protrusion and the second protrusion.
Through such setting, when the energy-absorbing area crumples and absorbs energy, the energy-absorbing area is constantly straightened and moves along with the first tubular column, when the first part contacts with the clamping protrusion, because the minimum distance between the first protrusion and the second protrusion is smaller than the width of the first part, the stop of the crumpling stroke can be realized through the matching of the first part and the clamping protrusion, the displacement of the steering tubular column is kept in a controllable range, and the requirements of automobile safety regulations are met.
In a preferred aspect of the steering column assembly, the driving device includes: the driving motor is arranged at the second pipe column; and a motion conversion mechanism, wherein the motion conversion mechanism is driven by the drive motor and configured to convert a rotational motion of the drive motor into an axial linear motion, thereby driving the connecting bracket.
Through such an arrangement, smooth and efficient driving of the mounting assembly can be achieved through cooperation of the driving motor and the motion conversion mechanism, so that the first tubular column can move smoothly relative to the second tubular column, and further smooth and automatic lifting of the steering wheel can be achieved.
In another aspect, the invention also provides a vehicle comprising the steering column assembly, so that the vehicle has the technical effects of the steering column assembly.
Drawings
FIG. 1 is a schematic view of the overall construction of a steering column assembly of the present invention;
FIG. 2 is a schematic view of a portion of the steering column assembly of the present invention;
FIG. 3 is a sectional view of FIG. 2 taken from direction A;
fig. 4 is a sectional view of fig. 2 from the direction B.
List of reference numerals:
1. a steering bracket;
2. a tubing string assembly; 21. a first tubular string; 22. a second tubular string; 22a, a through groove;
3. a rotating shaft assembly; 31. a first rotating shaft; 32. a second rotating shaft;
4. an energy absorbing member; 4a, the outer side of the energy absorbing piece; 41. a first portion; 42. a second portion;
5. mounting the component; 51. connecting a bracket; 52. a cover plate; 52a, the inner side of the cover plate;
6. a drive device; 61. a drive motor; 62. a screw rod; 63. a slider;
7. riveting;
8. a clamping structure; 81. clamping the concave part; 81a, a first recess; 81b, a second recess; 82. clamping the bulge; 82a, a first protrusion; 82b, a second protrusion;
9. a pin.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, the present invention may be applied to a conventional vehicle using gasoline or diesel oil as a power source, a vehicle using electric energy as a power source, and a hybrid vehicle, and the specific choice of the application objects should not be construed as a limitation to the present invention, and should be limited within the scope of the present invention.
The invention provides a steering column assembly and a vehicle with the same, aiming at improving the supporting function of the steering column assembly during collapse, keeping the steering column assembly to have sufficient supporting force and being convenient for flexibly adjusting the design size.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or component must have a specific orientation or must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and "connected" are to be construed broadly, e.g., "connected," "connected," may be a detachable connection or an integral connection; either directly or indirectly through intervening components. Furthermore, the interconnection of two components is not meant to limit the relative movement of the two components. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Specifically, as shown in fig. 1, the vehicle of the present invention includes a vehicle body (not shown in the figure) and a steering column assembly connected to the vehicle body, the steering column assembly includes a steering bracket 1, a column assembly 2 and a rotating shaft assembly 3, the steering bracket 1 is fixedly connected to the vehicle body, the column assembly 2 is mounted on the steering bracket 1, and the rotating shaft assembly 3 is disposed in the column assembly 2. Steering support 1 is as the load-bearing member of tubular column subassembly 2, and tubular column subassembly 2 is as the accommodate part of pivot subassembly 3, and pivot subassembly 3 is connected steering wheel and steering gear for give the steering gear with the driver to the turning force transmission of steering wheel, in practical application, can be connected the one end and the steering wheel of pivot subassembly 3, and the other end is connected with the one end of jackshaft, and the other end of jackshaft is connected with the steering gear again.
With continued reference to fig. 1, the pipe string assembly 2 of the present invention includes a first pipe string 21 and a second pipe string 22, and in the present invention, it is exemplarily illustrated that the first pipe string 21 and the second pipe string 22 can move relative to each other to actively implement automatic lifting of the steering wheel, specifically, the first pipe string 21 is sleeved in the second pipe string 22 and can move axially relative to the second pipe string 22, and both the first pipe string 21 and the second pipe string 22 are preferably steel pipe strings. The pivot subassembly 3 can adopt two pivots, also can adopt the pivot more than two, and all pivots link together with the mode that cup joints each other and can relative movement each other, through the telescopic removal of tubular column subassembly 2, can drive pivot subassembly 3 also telescopic removal, and then realize the lift of steering wheel. The embodiment of the present invention will be explained below by taking the spindle assembly 3 having two spindles as an example.
With continued reference to fig. 1, the rotating shaft assembly 3 includes a first rotating shaft 31 and a second rotating shaft 32 that are sleeved together, the first rotating shaft 31 and the first pipe column 21 are axially fixed and can rotate relative to the first pipe column 21, the second rotating shaft 32 and the second pipe column 22 are axially fixed and can rotate relative to the second pipe column 22, the first rotating shaft 31 can move relative to the second rotating shaft 32 and drive the second rotating shaft 32 to rotate, the first rotating shaft 31 is connected with a steering wheel, the second rotating shaft 32 is connected with a steering gear through an intermediate shaft, the steering wheel can drive the first rotating shaft 31 to rotate and thus drive the first rotating shaft 31 to drive the second rotating shaft 32 to rotate, and the second rotating shaft 32 transmits a rotating force to the steering gear through the intermediate shaft.
The rotation of the second rotating shaft 32 by the first rotating shaft 31 can be realized by the following steps: when first pivot 31 cup joints outside second pivot 32, at least part of first pivot 31 sets up to hollow structure, be formed with the spline groove of axial setting on the inner wall of first pivot 31, be formed with the spline of axial setting on the outer wall of second pivot 32, the spline realizes with the spline groove cooperation that first pivot 31 drives second pivot 32 and rotates, also can be formed with the spline of axial setting on the inner wall of first pivot 31, be formed with the spline groove of axial setting on the outer wall of second pivot 32, the spline realizes with the spline groove cooperation that first pivot 31 drives second pivot 32 and rotates, technicians in the field can set up the length of the hollow structure of first pivot 31 according to actual demand in a flexible way, the length of spline groove and spline. When second pivot 32 cup joints outside first pivot 31, at least part of second pivot 32 sets up to hollow structure, be formed with the spline groove of axial setting on the inner wall of second pivot 32, be formed with the spline of axial setting on the outer wall of first pivot 31, the spline realizes with the spline groove cooperation that first pivot 31 drives second pivot 32 and rotates, also can be formed with the spline of axial setting on the inner wall of second pivot 32, be formed with the spline groove of axial setting on the outer wall of first pivot 31, the spline realizes with the spline groove cooperation that first pivot 31 drives second pivot 32 and rotates, technicians in the art can set up the length of the hollow structure of second pivot 32 according to actual demand in a flexible way, the length of spline groove and spline. In other examples, the first rotating shaft 31 driving the second rotating shaft 32 to rotate may be implemented in other ways besides the above-mentioned way of using spline grooves and spline fit, and the change of this specific connection way should not be construed as a limitation to the present invention, and should be limited within the scope of the present invention.
The first rotating shaft 31 and the first pipe column 21 can be axially fixed and mutually rotated by arranging a shaft shoulder and adopting a mode of combining a clamp spring and a bearing, and specifically, the method comprises the following steps: the inner wall of the first pipe column 21 is provided with a shaft shoulder and a clamp spring groove, the outer wall of the first rotating shaft 31 is also provided with a shaft shoulder and a clamp spring groove, the outer ring of the first bearing is abutted against the inner wall of the first pipe column 21 along the radial direction, the outer ring of the first bearing is abutted against the shaft shoulder on the first pipe column 21 along the axial direction, the outer ring of the first bearing is abutted against a clamp spring embedded in the clamp spring groove on the first pipe column 21 along the axial direction, the shaft shoulder and the clamp spring on the first pipe column 21 are respectively positioned at two sides of the outer ring of the first bearing, the inner ring of the first bearing is abutted against the outer wall of the first rotating shaft 31 along the radial direction, the inner ring of the first bearing is abutted against the shaft shoulder on the first rotating shaft 31 along the axial direction, the inner ring of the first bearing is abutted against the clamp spring embedded in the clamp spring groove of the first rotating shaft 31 along the axial direction, and the shaft shoulder and the clamp spring on the first rotating shaft 31 are respectively positioned at two sides of the inner ring of the first bearing. Similarly, the second rotating shaft 32 and the second tubular column 22 can be axially fixed and rotate with each other by setting a shoulder and adopting a mode of combining a snap spring and a bearing, specifically: the inner wall of the second pipe column 22 is provided with a shaft shoulder and a clamp spring groove, the outer wall of the second rotating shaft 32 is also provided with a shaft shoulder and a clamp spring groove, the outer ring of the second bearing is abutted against the inner wall of the second pipe column 22 along the radial direction, the outer ring of the second bearing is abutted against the shaft shoulder on the second pipe column 22 along the axial direction, the outer ring of the second bearing is abutted against the clamp spring embedded in the clamp spring groove on the second pipe column 22 along the axial direction, the shaft shoulder and the clamp spring on the second pipe column 22 are respectively positioned at two sides of the outer ring of the second bearing, the inner ring of the second bearing is abutted against the outer wall of the second rotating shaft 32 along the radial direction, the inner ring of the second bearing is abutted against the shaft shoulder on the second rotating shaft 32 along the axial direction, the inner ring of the second bearing is abutted against the clamp spring embedded in the clamp spring groove of the second rotating shaft 32 along the axial direction, and the shaft shoulder and the clamp spring on the second rotating shaft 32 are respectively positioned at two sides of the inner ring of the second bearing. Of course, in other examples, the first rotating shaft 31 and the first tubular column 21 and the second rotating shaft 32 and the second tubular column 22 may be axially fixed and rotated relative to each other in other manners, and the change of the specific fixing manner should not be construed as a limitation to the present invention, and should be limited within the protection scope of the present invention.
In the present invention, with continued reference to fig. 1, 2 and 4, the steering column assembly further includes an energy absorbing member 4, a mounting member 5 and a driving device 6, a through slot 22a is formed on a side wall of the second column 22, the energy absorbing member 4 passes through the through slot 22a and is connected to the first column 21, the energy absorbing member 4 and the mounting member 5 are connected by a rivet 7 and are clamped to each other by a clamping structure 8, the driving device 6 is connected to the mounting member 5 and can drive the mounting member 5 to drive the energy absorbing member 4 to move and thus move the first column 21 relative to the second column 22, when the steering column assembly collapses, the driving device 6 fixes the mounting member 5 (i.e., the mounting member 5 remains stationary), the first column 21 moves relative to the second column 22 and drives the energy absorbing member 4 to move, and the rivet 7 and the clamping structure 8 jointly provide a collapsing peak force to the energy absorbing member 4. It should be noted that the through slots 22a are arranged to have a length that ensures that the energy absorbing member 4 has a sufficient collapsing stroke, i.e. does not form a barrier to the energy absorbing member 4 that has moved when collapsing occurs. The energy absorbing member 4 and the first pipe column 21 may be fixed by welding, or the energy absorbing member 4 and the first pipe column 21 are integrally formed, or fixed by other methods, which may be flexibly configured by those skilled in the art, and the change of the specific connection manner of the energy absorbing member 4 and the first pipe column 21 does not limit the present invention, and should be limited within the protection scope of the present invention.
Preferably, as shown in fig. 1, the driving device 6 includes a driving motor 61 and a motion conversion mechanism, wherein the motion conversion mechanism is driven by the driving motor 61 and is configured to convert a rotational motion of the driving motor 61 into an axial linear motion, thereby driving the mounting assembly 5. The motion conversion mechanism may include a lead screw 62 and a slider 63, the driving motor 61 is mounted on the second tubular string 22, an output shaft of the driving motor 61 is connected with the lead screw 62 and can drive the lead screw 62 to rotate, the lead screw 62 is in threaded connection with the slider 63 and enables the slider 63 to axially move on the lead screw 62 when the lead screw 62 rotates, and the slider 63 is connected with the mounting assembly 5. The driving motor 61 can be directly fixed on the second tubular column 22, it is preferable that the driving motor 61 is installed on the second tubular column 22 through a motor bracket, the driving motor 61 drives the screw rod 62 to rotate, so that the screw rod 62 realizes the movement of the slider 63 on the screw rod 62 through the screw connection with the slider 63, and further drives the installation component 5 to move, the installation component 5 and the energy absorbing piece 4 are connected through the rivet 7 and are clamped with each other through the clamping structure 8, so that the installation component 5 drives the first tubular column 21 to axially move relative to the second tubular column 22 through the energy absorbing piece 4, during the axial movement of the first tubular column 21 relative to the second tubular column 22, since the first tubular column 21 and the first rotating shaft 31 are axially fixed with each other, the second tubular column 22 and the second rotating shaft 32 are axially fixed with each other, so that the first rotating shaft 31 can also axially move relative to the second rotating shaft 32, and further realize the lifting of the steering wheel, and the first rotating shaft 31 is rotatable with respect to the first stem 21 and the second rotating shaft 32 is rotatable with respect to the second stem 22, so that the rotational force of the driver to the steering wheel can be transmitted to the steering gear through the first rotating shaft 31, the second rotating shaft 32, and the intermediate shaft in this order. In practical applications, the output shaft of the driving motor 61 may also be connected with the lead screw 62 through a speed reducer. Of course, in other examples, the driving device 6 may be replaced by a linear motor, a pneumatic cylinder or a hydraulic cylinder, etc. as a power source, and those skilled in the art may flexibly set the specific structure of the driving device 6 in practical applications, and such changes of the specific structure of the driving device 6 should not be construed as limitations to the present invention, and should not be construed as limitations to the scope of the present invention. In addition, the motion conversion mechanism is not limited to the form of the screw pair, and any mechanism or assembly capable of converting rotation into linear motion falls within the protection scope of the present invention.
Those skilled in the art can flexibly set the specific structure of the mounting assembly 5 in practical applications, for example, an integrated structure may be adopted, and a split structure may also be adopted. In a preferred case, as shown in fig. 1 to 4, the mounting assembly 5 comprises a connecting bracket 51 and a cover plate 52 connected to each other, the connecting bracket 51 being connected to the output of the drive means 6, the energy absorbing element 4 being connected to the cover plate 52 by means of a rivet 7, a part of the catch arrangement 8 being arranged on the energy absorbing element 4 and another part of the catch arrangement 8 being arranged on the cover plate 52. The connecting bracket 51 and the cover plate 52 can be connected by a screw or by other means, when the driving device 6 adopts the structure of the screw pair, the connecting bracket 51 is used as a threaded screw bracket, the clamping structure 8 can adopt a structure that the clamping protrusion and the clamping recess are clamped mutually, or a structure that the clamping protrusion and the elastic claw are matched, and a person skilled in the art can flexibly set the specific structure of the clamping structure 8 in practical application, as long as the arrangement of the clamping structure 8 enables the connecting bracket 51 and the cover plate to provide a collapse peak force together with the rivet 7 when the steering column assembly of the invention collapses. It should be noted that the specific value of the collapsing peak force provided by the rivet 7 can be flexibly adjusted according to the type of the rivet 7, and the specific value of the collapsing peak force provided by the fastening structure 8 can be flexibly adjusted by changing the specific structure of the fastening structure 8, for example, when the fastening structure 8 adopts a structure in which the fastening protrusion and the fastening recess are fastened together, the depth of the fastening protrusion fastened into the fastening recess can be set to adjust, and when the fastening structure 8 adopts a structure in which the fastening protrusion and the elastic claw are matched, the elastic claw can be set to adjust the elastic force of the fastening protrusion.
Preferably, as shown in fig. 4, the catching structure 8 comprises a catching recess 81 formed on the energy absorbing member 4 and a catching protrusion 82 formed on the cover plate 52, and the catching recess 81 is in catching engagement with the catching protrusion 82. The skilled person can flexibly set the specific shape of the fastening recess 81 and the fastening protrusion 82 in practical application, and in a preferred case, as shown in fig. 4, the fastening protrusion 82 is set to protrude from the inner side 52a of the cover plate 52 toward the energy absorber 4, and the surface of the protruding portion facing one side of the energy absorber 4 is a curved surface, and the fastening recess 81 is set to recess from the outer side 4a of the energy absorber 4, and the surface of the recessed portion is also a curved surface, so that the fastening structure 8 not only can provide a peak force of collapse when the vehicle collides and the driver acts on the steering wheel, but also the fastening protrusion 82 and the fastening recess 81 can be easily separated from each other after the acting force reaches the peak force of collapse provided by the rivet 7 and the fastening structure 8, thereby ensuring the energy absorber 4 to continue and provide the collapse energy absorbing force.
Preferably, as shown in fig. 3 and 4, the energy absorber 4 provides the crush retention in the following manner: the energy absorbing piece 4 is an energy absorbing belt, the cover plate 52 is connected with a pin 9, and the energy absorbing belt is wound on the pin 9. When a vehicle is collided and a driver acts on the steering wheel, acting force is transmitted to the first rotating shaft 31 through the steering wheel, the first rotating shaft 31 and the first tubular column 21 are axially fixed, the second tubular column 22 and the driving device 6 are kept still, so that the connecting bracket 51 and the cover plate 52 are also kept still, the first tubular column 21 has a tendency of axially moving relative to the second tubular column 22, and the energy absorption belt is also driven by the first tubular column 21 to axially move relative to the cover plate 52, when the acting force reaches a collapse peak force provided by the rivet 7 and the clamping structure 8 together, the rivet 7 is sheared due to a radial shearing force (namely, a radial shearing force to the rivet 7), the clamping bulge 82 and the clamping recess 81 lose the clamping effect due to separation from each other, the tubular column assembly 2 is integrally shortened, and the energy absorption belt axially moves relative to the cover plate 52, and the part of the energy absorption belt passing around the pin 9 is gradually shortened in the process of moving the energy absorption belt, the part of the energy absorption belt which does not bypass the pin 9 is gradually lengthened, namely the energy absorption belt is gradually pulled away from the pin 9, the pin 9 gradually straightens the energy absorption belt due to the reaction force on the energy absorption belt, the energy absorption belt continuously absorbs energy, so that continuous collapse retention force is generated, and the energy absorption belt preferably adopts a steel belt. The person skilled in the art can flexibly set the winding manner of the energy absorbing belt around the pin 9 in practical application, for example, after the energy absorbing belt is wound around the pin 9, the portion of the energy absorbing belt wound around the pin 9 is located between the portion of the energy absorbing belt not wound around the pin 9 and the first pipe column 21, or the portion of the energy absorbing belt not wound around the pin 9 is located between the portion of the energy absorbing belt wound around the pin 9 and the first pipe column 21 (this is the case in fig. 3 and 4), and in the case shown in fig. 3 and 4, the shape of the cross section of the portion of the energy absorbing belt not wound around the pin 9 is preferably an inverted U shape, that is, two vertical sides of the inverted U-shaped structure are connected with the first pipe column 21. Of course, in other examples, the energy absorbing member 4 may also adopt the structure of an energy absorbing block or an energy absorbing plate, and the way of providing the collapse retention force by the energy absorbing member 4 may also adopt other ways, for example, the energy absorbing member 4 is an energy absorbing block, an energy absorbing groove matched with the energy absorbing block is formed on the cover plate 52, the width of the energy absorbing groove is smaller than that of the energy absorbing block, when the collapse occurs, the energy absorbing block widens the energy absorbing groove by being extruded with the energy absorbing groove, and the energy absorbing groove realizes the continuous energy absorption of the energy absorbing block.
Preferably, as shown in fig. 3 and 4, the energy absorbing strip comprises a first portion 41 and a second portion 42 connected to each other, the first portion 41 being provided around the stud 9, the second portion 42 being connected to the first stem 21, the second portion 42 being connected to the cover plate 52 by means of the rivet 7, and a catching recess 81 being formed in the second portion 42. The first portion 41 and the second portion 42 are preferably integrally formed, and in practical applications, the portion of the first portion 41 that does not pass around the pin 9 may be connected to the first pipe string 21. As shown in fig. 3 and 4, the end connecting the first portion 41 and the second portion 42 is called a first end of the first portion 41, the end connecting the second portion 42 and the first portion 41 is called a first end of the second portion 42, and the first end of the first portion 41 is connected to the first end of the second portion 42, so that the extending direction of the second end of the first portion 41 is preferably parallel to the extending direction of the second end of the second portion 42 in the case where the energy absorbing band and the pin 9 are completely wound, and by such arrangement, the first portion 41 and the pin 9 can be sufficiently contacted, the contact area is increased, and a more stable and continuous collapse holding force is provided when the steering column assembly collapses.
Preferably, as shown in fig. 4, the latching recess 81 includes a first recess 81a and a second recess 81b respectively formed at both sides of the second portion 42, the latching protrusion 82 includes a first protrusion 82a and a second protrusion 82b formed on the cover plate 52 and respectively located at both sides of the second portion 42, the first protrusion 82a is latched and engaged with the first recess 81a, and the second protrusion 82b is latched and engaged with the second recess 81 b. For example, in the structure shown in fig. 4, the left and right sides of the second portion 42 of the energy absorbing band are respectively formed with a first recess 81a and a second recess 81b, the two inner walls of the cover plate 52 located at the left and right sides of the second portion 42 are respectively formed with a first protrusion 82a and a second protrusion 82b, the first protrusion 82a is engaged with the first recess 81a, the second protrusion 82b is engaged with the second recess 81b, when the steering column assembly collapses, the first protrusion 82a and the second protrusion 81a and the second protrusion 82b together provide the peak collapsing force of the energy absorbing band to the engaging structure 8, the first protrusion 82a and the second protrusion 82b preferably have the same structure and size, the first recess 81a and the second recess 81b also preferably have the same structure and size, so as to ensure that the force of the first protrusion 82a to the first recess 81a is balanced with the force of the second protrusion 82b to the second recess 81b, namely, the clamping forces on the left and right sides of the energy-absorbing belt are balanced, so that the energy-absorbing belt is prevented from deflecting or warping when the energy-absorbing belt just starts to move axially relative to the cover plate 52. In a more preferred case, the width of the first portion 41 is greater than the width of the second portion 42, and the width of the first portion 41 is greater than the minimum distance between the first protrusion 82a and the second protrusion 82b (note that, the width of the first portion 41 is greater than the width of the second portion 42, and the width of the first portion 41 may be greater than the width of the second portion 42 as a whole, or the width of a part of the first portion 41 may be greater than the width of the second portion 42, and similarly, the width of the first portion 41 is greater than the minimum distance between the first protrusion 82a and the second protrusion 82b, and may be greater than the minimum distance between the first protrusion 82a and the second protrusion 82b as a whole, or the width of a part of the first portion 41 may be greater than the minimum distance between the first protrusion 82a and the second protrusion 82b, as long as the width of the first portion 41 can achieve the engagement with the engagement protrusion 82), namely, the catching protrusion 82 has two functions, the first function is to provide a required part of the peak force of the collapse by the cooperation of the catching protrusion 82 and the catching recess 81 when the steering column assembly is just beginning to collapse, the second function is to stop the collapse stroke by catching the first part 41 through the first protrusion 82a and the second protrusion 82b during the collapse of the steering column assembly, namely, the end of the collapse stroke is designed through the width change of the first part 41 and the second part 42, the specific stroke value of the collapse stroke can be adjusted according to the length dimension of each of the first part 41 and the second part 42, and in the case that the energy absorption band and the pin 9 are completely wound, the distance between the joint of the first part 41 and the second part 42 and the catching protrusion 82 is preferably smaller than the length of the part of the first part 41 wound around the pin 9, so as to ensure that the energy absorption band can always provide the collapse retention force during the entire collapse stroke, i.e. at the end of the collapsing stroke, a remaining part of the first portion 41 is still provided around the pin 9. Further, the hardness of the catching protrusion 82 is preferably greater than that of the catching recess 81, so that the catching protrusion 82 is not deformed as much as possible after the catching recess 81 and the catching protrusion 82 are separated from each other, thereby ensuring that the catching protrusion 82 can be continuously engaged with the first portion 41 to catch the first portion 41, thereby terminating the collapsing stroke of the steering column assembly.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A steering column assembly for a vehicle, comprising:
a first tubular string (21);
a second pipe string (22), wherein the first pipe string (21) and the second pipe string (22) are connected to each other;
an energy absorbing member (4), wherein the energy absorbing member (4) is connected to the first tubular string (21) and follows the first tubular string (21) to move axially relative to the second tubular string (22) upon collapse of the steering column assembly; and
a fixedly arranged mounting assembly (5), wherein the mounting assembly (5) and the energy absorption element (4) are connected by means of a rivet (7) and are clamped to one another by means of a clamping structure (8), wherein,
the rivet (7) and the clamping structure (8) jointly provide a collapse peak force for the energy absorbing piece (4).
2. The steering column assembly of claim 1, further comprising:
a drive device (6), the drive device (6) driving the first string (21) to move axially relative to the second string (22), wherein,
the first pipe column (21) is sleeved in the second pipe column (22), a through groove (22a) is formed on the side wall of the second pipe column (22), so that the energy absorbing part (4) is connected with the first pipe column (21) in a manner of radially penetrating through the through groove (22a),
the mounting assembly (5) comprises a connecting bracket (51) and a cover plate (52) which are connected with each other, the connecting bracket (51) is connected with the output end of the driving device (6), the cover plate (52) is connected with the energy absorbing piece (4) through the rivet (7), and the cover plate and the energy absorbing piece (4) form the clamping structure (8) together.
3. A steering column assembly according to claim 2, wherein the catch formation (8) comprises a catch recess (81) formed in the energy absorbing member (4) and a catch projection (82) formed in the cover plate (52), the catch recess (81) being in a catch engagement with the catch projection (82).
4. A steering column assembly according to claim 3, wherein the energy absorbing member (4) is an energy absorbing band, and the cover plate (52) is provided with a pin (9) around which the energy absorbing band is wound, the energy absorbing band being wound around the pin (9).
5. A steering column assembly according to claim 4 in which the energy absorbing band comprises a first portion (41) and a second portion (42) connected to each other, the first portion (41) being provided around the pin (9), the second portion (42) being connected to the first column (21) and to the cover plate (52) by means of the rivet (7), the retaining recess (81) being formed in the second portion (42).
6. A steering column assembly according to claim 5, characterised in that a first end of the first part (41) is connected to a first end of the second part (42), and a second end of the first part (41) extends in a direction parallel to the direction of extension of a second end of the second part (42).
7. The steering column assembly according to claim 5, wherein the catching recess (81) includes a first recess (81a) and a second recess (81b) formed on both sides of the second portion (42), respectively, and the catching protrusion (82) includes a first protrusion (82a) and a second protrusion (82b) formed on the cover plate (52) on both sides of the second portion (42), respectively, the first protrusion (82a) being in catching engagement with the first recess (81a), and the second protrusion (82b) being in catching engagement with the second recess (81 b).
8. The steering column assembly of claim 7, wherein the width of the first portion (41) is greater than the width of the second portion (42) and the minimum spacing between the first protrusion (82a) and the second protrusion (82 b).
9. Steering column assembly according to any of claims 2 to 8, characterized in that the drive means (6) comprise:
a drive motor (61), wherein the drive motor (61) is provided at the second pipe string (22); and
a motion conversion mechanism driven by the drive motor (61) and configured to convert a rotational motion of the drive motor (61) into an axial linear motion, thereby driving the connecting bracket (51).
10. A vehicle comprising a steering column assembly according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110624593.9A CN113212535A (en) | 2021-06-04 | 2021-06-04 | Vehicle and steering column assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110624593.9A CN113212535A (en) | 2021-06-04 | 2021-06-04 | Vehicle and steering column assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113212535A true CN113212535A (en) | 2021-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110624593.9A Pending CN113212535A (en) | 2021-06-04 | 2021-06-04 | Vehicle and steering column assembly thereof |
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| CN (1) | CN113212535A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115214760A (en) * | 2022-06-15 | 2022-10-21 | 杭州琳达汽配有限公司 | Crumple installation device of steering tube |
| CN115320700A (en) * | 2022-08-30 | 2022-11-11 | 浙江极氪智能科技有限公司 | Steering column collapsing mechanism |
| CN115416744A (en) * | 2022-09-06 | 2022-12-02 | 浙江极氪智能科技有限公司 | Steering column and vehicle |
| US11572094B2 (en) * | 2020-06-18 | 2023-02-07 | Nsk Americas, Inc. | Steering column telescope assembly and energy absorption device |
| WO2024087749A1 (en) * | 2022-10-24 | 2024-05-02 | 浙江极氪智能科技有限公司 | Steering column for vehicle and vehicle |
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2021
- 2021-06-04 CN CN202110624593.9A patent/CN113212535A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11572094B2 (en) * | 2020-06-18 | 2023-02-07 | Nsk Americas, Inc. | Steering column telescope assembly and energy absorption device |
| US11975756B2 (en) | 2020-06-18 | 2024-05-07 | Nsk Americas, Inc. | Steering column telescope assembly and energy absorption device |
| CN115214760A (en) * | 2022-06-15 | 2022-10-21 | 杭州琳达汽配有限公司 | Crumple installation device of steering tube |
| CN115214760B (en) * | 2022-06-15 | 2023-08-11 | 杭州琳达汽配有限公司 | Crumple mounting device of steering tube |
| CN115320700A (en) * | 2022-08-30 | 2022-11-11 | 浙江极氪智能科技有限公司 | Steering column collapsing mechanism |
| CN115320700B (en) * | 2022-08-30 | 2023-08-22 | 浙江极氪智能科技有限公司 | Steering column collapsing mechanism |
| CN115416744A (en) * | 2022-09-06 | 2022-12-02 | 浙江极氪智能科技有限公司 | Steering column and vehicle |
| CN115416744B (en) * | 2022-09-06 | 2023-06-23 | 浙江极氪智能科技有限公司 | Steering column and vehicle |
| WO2024087749A1 (en) * | 2022-10-24 | 2024-05-02 | 浙江极氪智能科技有限公司 | Steering column for vehicle and vehicle |
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