CN109421788B - Steering column assembly and automobile - Google Patents
Steering column assembly and automobile Download PDFInfo
- Publication number
- CN109421788B CN109421788B CN201710784609.6A CN201710784609A CN109421788B CN 109421788 B CN109421788 B CN 109421788B CN 201710784609 A CN201710784609 A CN 201710784609A CN 109421788 B CN109421788 B CN 109421788B
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- China
- Prior art keywords
- steering column
- cam
- column assembly
- range
- energy absorption
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering Controls (AREA)
Abstract
The invention relates to a steering column assembly, comprising a crumple energy absorption system and a locking system which are arranged near the steering column, wherein the steering column is provided with a lower pipe and an upper pipe which can move relative to the lower pipe, and the crumple energy absorption system comprises: a cam; an energy absorbing band; a fixing plate; an elastic member; a connecting member movable in a direction perpendicular to a length direction of the steering column by means of rotation of the cam, wherein the crush energy absorption system has a locked position in which the second end of the elastic member is firmly engaged with the fixing plate and an unlocked position in which the second end of the elastic member is lifted up and disengaged from the fixing plate by means of elevation of the connecting member. The invention also provides an automobile provided with the steering column assembly. The steering column assembly has a longer collapsing stroke.
Description
Technical Field
The invention relates to a steering column assembly and an automobile provided with the same, belonging to the technical field of automobiles.
Background
In the automotive field, a steering column assembly is a part of an automotive steering system, in which one end of a steering column is connected to a steering wheel and the other end is connected to an intermediate shaft, a steering gear and the like, for transmitting a steering force of the steering wheel to the steering gear and the like. Because different drivers have different requirements on the operation comfort level of the steering wheel, the steering column is usually designed to be capable of moving up and down and back and forth based on humanized consideration, so that the drivers can adjust the up-down and front-back positions of the steering wheel according to independent requirements.
The steering column assembly also comprises a collapse energy absorption system, a locking system and the like. Typically, the crush energy absorption system and the lock system are assembled on the same side of the steering column. If the customer requires that the ignition system be mounted on the other side of the steering column, then there is no problem in transferring motion between the energy retraction system and the locking system. However, if the customer requires that the ignition system also be assembled on the same side of the crush energy absorption system and the locking system, it is difficult for the manufacturer to meet the customer's requirements for the crush stroke because there is not enough assembly space.
Therefore, a steering column assembly capable of effectively extending the collapsing stroke is desired.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide a steering column assembly that effectively solves the above problems and other problems of the prior art. In a steering column assembly according to the present invention, the steering column assembly includes a crush energy absorption system and a latch system mounted adjacent to a steering column, and the steering column has a lower tube and an upper tube movable relative to the lower tube, the crush energy absorption system including:
the cam is synchronously and rotatably connected with a handle in the locking system;
the energy absorption belt is fixed on the lower pipe of the steering column at a position on the different side from the locking system;
a fixing plate fixed to an upper tube of the steering column and movable in a longitudinal direction of the steering column together with the upper tube;
a resilient member having a first end fixedly attached to the energy absorbing band and a second end releasably engageable with the fixing plate;
a link movable in a direction perpendicular to a length direction of the steering column by means of rotation of the cam,
wherein the energy-absorbing collapse system has a locked position in which the second end of the resilient member is securely engaged with the fixation plate and an unlocked position in which the second end of the resilient member is lifted by the raising of the connector and disengaged from the fixation plate.
In an advantageous embodiment of the steering column assembly according to the invention, the cam has a first flange-like projection and the connecting element has a bracket located above the first projection of the cam.
In a further advantageous embodiment of the steering column assembly according to the invention, the first projection of the cam is not in contact with the bracket of the connecting piece when the range of rotation of the cam is in the first angular range in the locked position of the energy-absorbing collapse system.
In a further advantageous embodiment of the steering column assembly according to the invention, in the unlocked position of the energy-absorbing collapse system,
when the rotation range of the cam is in a second angle range, the first protruding part of the cam pushes the bracket of the connecting piece upwards to enable the elastic piece to be disengaged from the fixing plate,
when the rotation range of the cam is in a third angle range, the first protruding part of the cam keeps contact with the bracket of the connecting piece, the first protruding part of the cam enables the height of the connecting piece to be in a stable state in the third angle range by virtue of the appearance characteristic of the first protruding part of the cam, so that the second end of the elastic piece is prevented from being accidentally engaged with the fixing plate due to the self-descending of the connecting piece,
wherein a minimum value of the second angular range is greater than or equal to a maximum value of the first angular range, and a minimum value of a third angular range is greater than or equal to a maximum value of the second angular range.
In a further advantageous embodiment of the steering column assembly according to the invention, the cam further comprises a second flange-like projection, and the connecting element has a tongue matching the second projection for preventing the connecting element from vibrating.
In yet another advantageous embodiment of the steering column assembly according to the present invention, the second projection of the cam is in contact with the tongue when the range of rotation of the cam is in the first angular range.
In a further advantageous embodiment of the steering column assembly according to the invention, the tongue thickness is in the range between 0 and 1 mm.
In another advantageous embodiment of the steering column assembly according to the invention, the second end of the resilient member engages the anchor plate via a toothed portion.
In another advantageous embodiment of the steering column assembly according to the invention, the first angle range is between 0-10 °, the second angle range is between 35-45 ° and the third angle range is between 35-45 °.
Further, according to a second aspect of the present invention, there is provided an automobile. The automobile is provided with the steering column assembly.
The steering column assembly effectively prolongs the crumpling stroke of the crumpling energy absorption system under the condition of not influencing an ignition system and a locking system, thereby meeting the customization requirements of customers.
Drawings
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and detailed description, wherein:
FIG. 1 is a schematic structural view of an embodiment of a steering column assembly according to the present invention.
FIG. 2 is a schematic view of the steering column assembly of FIG. 1 with the lower tube omitted.
FIG. 3 is a front view of the energy absorption collapse system of the steering column assembly of FIG. 1.
FIG. 4 is a schematic structural view of a crush energy absorption system of the steering column assembly of FIG. 3.
FIG. 5 is a schematic structural view of a connector of the energy absorption system of the steering column assembly of FIG. 4.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. First, it should be noted that the terms of orientation such as up, down, left, right, front, rear, inner, outer, top, bottom, etc., mentioned or possibly mentioned in the present specification are defined with respect to the configurations shown in the respective drawings, and they are relative concepts, and thus may be changed accordingly depending on the position and the use state thereof. Therefore, these and other directional terms should not be construed as limiting terms.
FIG. 1 generally illustrates one embodiment of a steering column assembly according to the present invention. The steering column assembly includes a crush energy absorption system, a locking system, an ignition system (not shown), etc. installed near the steering column 1. As can be seen from fig. 2, the steering column 1 includes a lower tube 11 and an upper tube 12 that is movable relative to the lower tube 11, and in the present embodiment, the upper tube 12 is fitted around the lower tube 11 and is movable in a front-rear telescopic manner in the longitudinal direction of the steering column 1. The crumple energy absorption system comprises: the cam 2 is synchronously and rotatably connected with a handle 3 in the locking system, namely, the rotation of the cam 2 is synchronous with the handle 3; an energy absorbing belt 4 fixed to a lower tube 11 of the steering column 1 at a position different from the side of the lock system; a fixing plate 5 fixed to an upper tube 12 of the steering column 1 by press fitting or the like and movable in the longitudinal direction of the steering column 1 together with the upper tube 12; an elastic member 6 having a first end 62 fixedly attached to the energy-absorbing belt 4 and a second end 61 releasably engageable with the fixing plate 5; and a link 7 movable in a direction perpendicular to the length direction of the steering column 1 by means of rotation of the cam 2. Since the energy absorbing belt 4 is fixed to the lower tube 11 of the steering column 1 at a position different from the position of the lock system, the installation position thereof is not affected by an ignition system or a lock system or the like. The length of the energy absorption band 4, i.e. the collapsing stroke, can thus be tailored to the customer's requirements.
It should be noted that the energy-absorbing collapse system has a locked position in which the second end 61 of the elastic member 6 is firmly engaged with the fixing plate 5, for example by means of teeth 63, and an unlocked position; whereas in the unlocked position, the cam 2 is rotated by the handle 3, the second end 61 of the elastic element 6 can be lifted and disengaged from the fixed plate 5 by means of the lifting of the connecting element 7. With the above structure, the operator can adjust the front-rear position of the steering wheel in the unlocked position with the handle 3 very conveniently.
In the embodiment according to fig. 3 and 4, the cam 2 has a flange-like first projection 21, and the connecting piece 7 has a bracket 71 located above the first projection 21 of the cam 2. Further, in the locked position of the crush energy absorption system, the first tab 21 of the cam 2 is not in contact with the bracket 71 of the connector 7 when the range of rotation of the cam 2 is in a first angular range (e.g., between 0-10 °). Furthermore, in the unlocked position of the energy-absorbing collapse system, the range of rotation of the cam 2 can also be designed with a second angular range (for example between 10 and 35 °) and a third angular range (for example between 35 and 45 °), it being ensured that the minimum value of the second angular range is greater than or equal to the maximum value of the first angular range and the minimum value of the third angular range is greater than or equal to the maximum value of the second angular range. When the rotation range of the cam 2 is in the second angular range, the first protrusion 21 of the cam 2 pushes the bracket 71 of the connecting member 7 upward to disengage the elastic member 6 from the fixed plate 5, when the rotation range of the cam 2 is in the third angular range, the first protrusion 21 of the cam 2 keeps in contact with the bracket 71 of the connecting member 7, the self-profile feature of the first protrusion 21 of the cam 2 makes the height of the connecting member 7 in a stable state in the third angular range, and the self-profile feature of the first protrusion 21 of the cam 2 has a self-locking function of preventing the connecting member 7 from descending by itself to cause the accidental engagement of the second end 61 of the elastic member 6 with the fixed plate 5 (such accidental engagement would cause the upper tube 12 of the steering column 1 to be unable to adjust back and forth).
In order to reduce vibrations of the connecting element 7 during the travel of the vehicle, a second flange-like projection 22 can additionally be provided on the cam 2, and a tongue 72 (see fig. 5) which is adapted to the second projection 22 is correspondingly provided on the connecting element 7. Preferably, the thickness of the tongue 72 ranges between 0-1 mm. It will be understood by those skilled in the art that the second protrusion 22 of the cam 2 is in contact with the tongue 72 when the rotational range of the cam 2 is in the first angular range.
In other preferred embodiments combined with the above embodiments, the energy absorbing belt 4 and the elastic member 6 may form a sub-system by a plastic seat 8, as shown in fig. 2, and the sub-system may be connected to the lower pipe 11 by bolts or the like. When the energy-absorbing collapse system is in a locked state and collapses, the upper tube 12 and the fixing plate 5 generate a crushing force on the elastic member 6 through the teeth 63 on the elastic member 6. Because the elastic piece 6 and the energy absorption belt 4 are fixedly connected, the energy absorption belt 4 tends to rotate 180 degrees around the end of the plastic seat 8. Whereas the other end of the energy absorbing belt 4 is riveted to the plastic seat 8 by a rivet 41 made of plastic, the rivet 41 is sheared by the crushing force. Thereby, the energy absorbing belt 4 rotates around the end of the plastic seat 8 to be deformed, thereby absorbing the collapse energy.
In conclusion, the steering column assembly is optimally designed in structure, so that the collapse stroke of the collapse energy absorption system is effectively increased under the condition that the assembly is not influenced by the installation of the ignition system and the locking system, and the steering column assembly not only meets the corresponding national standard, but also well meets the requirements of suppliers. In addition, the steering column assembly of the present invention also facilitates the operator's freedom of adjustment between locked and unlocked conditions. Therefore, the steering column assembly is quite recommended to be popularized and applied in automobiles.
While the present invention has been described with reference to a number of embodiments, and in particular embodiments, the steering column assembly and the vehicle incorporating the same, these embodiments are provided merely to illustrate the principles and implementations of the invention, and not to limit the invention. For example, the length of the energy absorption band ranges over 90 mm. Accordingly, all equivalents are intended to be included within the scope of this invention and defined in the claims which follow.
Claims (10)
1. A steering column assembly comprising a crush energy absorption system and a latching system mounted near the steering column and the steering column having a lower tube and an upper tube movable relative to the lower tube, the crush energy absorption system comprising:
the cam is synchronously and rotatably connected with a handle in the locking system;
the energy absorption belt is fixed on the lower pipe of the steering column at a position on the different side from the locking system;
a fixing plate fixed to an upper tube of the steering column and movable in a longitudinal direction of the steering column together with the upper tube;
a resilient member having a first end fixedly attached to the energy absorbing band and a second end releasably engageable with the fixing plate;
a link movable in a direction perpendicular to a length direction of the steering column by means of rotation of the cam,
wherein the energy-absorbing collapse system has a locked position in which the second end of the resilient member is securely engaged with the fixation plate and an unlocked position in which the second end of the resilient member is lifted by the raising of the connector and disengaged from the fixation plate.
2. The steering column assembly of claim 1, wherein the cam has a first flange-like projection, and the connector has a bracket positioned over the first projection of the cam.
3. The steering column assembly of claim 2, wherein the first protrusion of the cam does not contact the bracket of the connector when the range of rotation of the cam is in the first angular range in the locked position of the crush energy absorption system.
4. The steering column assembly of claim 3, wherein in the unlocked position of the energy-collapse absorption system,
when the rotation range of the cam is in a second angle range, the first protruding part of the cam pushes the bracket of the connecting piece upwards to enable the elastic piece to be disengaged from the fixing plate,
when the rotation range of the cam is in a third angle range, the first protruding part of the cam keeps contact with the bracket of the connecting piece, the first protruding part of the cam enables the height of the connecting piece to be in a stable state in the third angle range by virtue of the appearance characteristic of the first protruding part of the cam, so that the second end of the elastic piece is prevented from being accidentally engaged with the fixing plate due to the self-descending of the connecting piece,
wherein a minimum value of the second angular range is greater than or equal to a maximum value of the first angular range, and a minimum value of a third angular range is greater than or equal to a maximum value of the second angular range.
5. The steering column assembly of claim 4, wherein the cam further comprises a second flange-like protrusion, and the link has a tongue that mates with the second protrusion to prevent the link from vibrating.
6. The steering column assembly of claim 5, wherein the second protrusion of the cam contacts the tongue over a first range of angles of the cam.
7. The steering column assembly of claim 5, wherein the tongue thickness is in a range between 0-1 millimeters.
8. The steering column assembly of any of claims 1-4, wherein the second end of the resilient member engages the anchor plate via a toothed portion.
9. The steering column assembly of claim 4, wherein the first angle range is between 0-10 °, the second angle range is between 35-45 °, and the third angle range is between 35-45 °.
10. An automobile, characterized in that the automobile is provided with a steering column assembly according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710784609.6A CN109421788B (en) | 2017-09-04 | 2017-09-04 | Steering column assembly and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710784609.6A CN109421788B (en) | 2017-09-04 | 2017-09-04 | Steering column assembly and automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109421788A CN109421788A (en) | 2019-03-05 |
| CN109421788B true CN109421788B (en) | 2021-07-02 |
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ID=65505017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710784609.6A Expired - Fee Related CN109421788B (en) | 2017-09-04 | 2017-09-04 | Steering column assembly and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109421788B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102099238A (en) * | 2008-06-04 | 2011-06-15 | Zf转向系统纳卡姆公司 | Improved adjustable steering column for motor vehicles |
| KR20130048901A (en) * | 2011-11-03 | 2013-05-13 | 주식회사 만도 | Tilting locking apparatus for absorbing knee shock and steering column for vehicle having the same |
| CN104859707A (en) * | 2014-02-21 | 2015-08-26 | 株式会社捷太格特 | Steering system |
| CN105764772A (en) * | 2013-10-04 | 2016-07-13 | Nsk美国有限公司 | Collapsible steering column assembly |
| CN106004983A (en) * | 2015-03-27 | 2016-10-12 | 富士机工株式会社 | Steering column device |
| CN205916180U (en) * | 2016-08-29 | 2017-02-01 | 长城汽车股份有限公司 | A energy -absorbing device and steering column assembly of contracting of bursting for steering column |
-
2017
- 2017-09-04 CN CN201710784609.6A patent/CN109421788B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102099238A (en) * | 2008-06-04 | 2011-06-15 | Zf转向系统纳卡姆公司 | Improved adjustable steering column for motor vehicles |
| KR20130048901A (en) * | 2011-11-03 | 2013-05-13 | 주식회사 만도 | Tilting locking apparatus for absorbing knee shock and steering column for vehicle having the same |
| CN105764772A (en) * | 2013-10-04 | 2016-07-13 | Nsk美国有限公司 | Collapsible steering column assembly |
| CN104859707A (en) * | 2014-02-21 | 2015-08-26 | 株式会社捷太格特 | Steering system |
| CN106004983A (en) * | 2015-03-27 | 2016-10-12 | 富士机工株式会社 | Steering column device |
| CN205916180U (en) * | 2016-08-29 | 2017-02-01 | 长城汽车股份有限公司 | A energy -absorbing device and steering column assembly of contracting of bursting for steering column |
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| Publication number | Publication date |
|---|---|
| CN109421788A (en) | 2019-03-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190422 Address after: Schwarzenegminde, Germany Applicant after: ROBERT BOSCH AUTOMOTIVES STEERING GmbH Address before: 2008-335 8 Floors, Building 333, Fuquan North Road, Changning District, Shanghai Applicant before: BOSCH AUTOMOTIVE STEERING MANAGEMENT (SHANGHAI) CO.,LTD. |
|
| TA01 | Transfer of patent application right | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210702 |
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| CF01 | Termination of patent right due to non-payment of annual fee |