CN210191573U - Energy-absorbing steering column and automobile - Google Patents
Energy-absorbing steering column and automobile Download PDFInfo
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- CN210191573U CN210191573U CN201920549974.3U CN201920549974U CN210191573U CN 210191573 U CN210191573 U CN 210191573U CN 201920549974 U CN201920549974 U CN 201920549974U CN 210191573 U CN210191573 U CN 210191573U
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- steering column
- column tube
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- guide bracket
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Abstract
The utility model belongs to the automobile field specifically provides an energy-absorbing formula steering column and car. The utility model discloses aim at solving the current steering column and crumple the unstable problem of produced damping force when the car bumps. Therefore, the utility model discloses a steering column includes first pivot, second pivot, column casing, with column casing sliding connection's installing support, with column casing fixed connection's guide bracket, one end fixed to the installing support on the other end by the bar component of guide bracket crimping to the column casing. The utility model discloses a steering column when the car bumps, is in the in-process that first pivot and column casing removed to the second pivot together promptly, and the bar component slides and consequently produces the damping for the column casing, hinders first pivot and column casing and removes. Because the friction force (namely damping force) generated by crimping when the strip-shaped member slides relative to the column tube is not changed, the stability of the damping force when the steering column collapses is ensured.
Description
Technical Field
The utility model belongs to the automobile field specifically provides an energy-absorbing formula steering column and car.
Background
The collapsible steering column means that when a vehicle collides frontally, the steering column can be automatically contracted or broken instantly, so that the distance between a steering wheel and a driver is separated, and the living space of the driver is increased.
Usually, the steering column can be designed to collapse and deform in advance, and when the automobile is impacted violently, the driver tends to lean forward due to great inertia, and the chest of the driver collides with the steering wheel. In order to reduce the impact force of a steering wheel on the chest of a driver, some automobiles design a steering column to be squeezed by external force during collision to generate two-to-three-section crumpling, folding and energy absorption, so that the impact force transmitted to a human body by the steering wheel is reduced.
However, in the conventional steering column, the damping force generated by the energy absorption of the collapse is generally unstable during the collapse, and is large or small during the collapse, which may cause a certain damage to the driver, especially in the case where the damping force is large at the beginning of the collapse.
Accordingly, there is a need in the art for a new energy absorbing steering column and automobile that addresses the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem in the prior art, that is, to solve the problem that the damping force generated by the collapse of the existing steering column is unstable when the automobile collides, the utility model provides an energy-absorbing steering column, the steering column includes a first rotating shaft, a second rotating shaft and a column tube which are coaxially arranged, the first rotating shaft and the second rotating shaft are connected together in a manner of being fixed along the circumferential direction and slidable along the axial direction, the column tube is sleeved outside the first rotating shaft and the second rotating shaft, and the column tube and the first rotating shaft are connected together in a manner of being rotatable along the circumferential direction and fixed along the axial direction; the steering column further comprises a mounting bracket and a bar-shaped member, the column tube is connected with the mounting bracket in an axially slidable manner, the bar-shaped member is connected with the column tube in a pressing manner, one end of the bar-shaped member is also connected with the mounting bracket, and during the process that the first rotating shaft and the column tube move together towards the second rotating shaft, the bar-shaped member slides relative to the column tube and generates damping so as to hinder the first rotating shaft and the column tube from moving.
In the above-described preferred embodiment of the energy-absorbing steering column, the bar-shaped member is a plate-shaped member bent into a U-shape, and the connection between the bar-shaped member and the column tube is set so that the bar-shaped member moves along a trajectory of the U-shape while the first rotating shaft and the column tube move together toward the second rotating shaft.
In a preferred embodiment of the energy-absorbing steering column, a guide bracket is fixedly connected to the column tube, the bar-shaped member is inserted between the guide bracket and the column tube and is pressed against the column tube by the guide bracket, and the U-shaped track is formed at one end of the guide bracket.
In the preferable technical scheme of the energy-absorbing steering column, a pressing block is further arranged on one side, facing the column tube, of the guide support, and the strip-shaped member is pressed onto the column tube through the pressing block by the guide support.
In a preferred embodiment of the energy-absorbing steering column, the steering column further includes a motor fixedly connected to the mounting bracket, a lead screw drivingly connected to the motor, a nut threadedly connected to the lead screw, and a sliding plate fixedly connected to the nut, the sliding plate is slidably connected to the guide bracket, the sliding plate is fixedly connected to the one end of the bar-shaped member, and the motor drives the sliding plate, the bar-shaped member, the column tube, and the first rotating shaft to move together through the lead screw and the nut.
In a preferred embodiment of the energy-absorbing steering column, the steering column further includes a sliding plate fixedly connected to the mounting bracket, the sliding plate is slidably connected to the guide bracket, and the sliding plate is fixedly connected to the one end of the bar member.
In a preferred embodiment of the energy-absorbing steering column, the steering column further includes a fixing pin, and the fixing pin passes through a through hole provided in the sliding plate and is inserted into a fixing hole provided in the guide bracket to fix the sliding plate and the guide bracket together; the fixing pins are also configured to be cut off when subjected to a preset shear force, thereby allowing the sliding plate to slide on the guide brackets.
In a preferred embodiment of the energy-absorbing steering column, the fixing pin is made of a plastic material.
In a preferred embodiment of the energy-absorbing steering column, the mounting bracket includes a fixing plate and a housing, which are fixedly connected or integrally formed, and the mounting bracket is slidably connected to the column tube through the housing and is fixedly connected to the one end of the bar member.
Furthermore, the utility model also provides an automobile, the automobile includes any one of above-mentioned preferred technical scheme energy-absorbing formula steering column.
It can be understood by those skilled in the art that in the preferred embodiment of the present invention, the bar-shaped member is connected to the mounting bracket in an axially slidable manner, and the bar-shaped member is connected to the column tube in a press-fitting manner, and one end of the bar-shaped member is connected to the mounting bracket, so that the steering column of the present invention is configured to slide relative to the column tube and generate damping to prevent the first rotating shaft and the column tube from moving when the vehicle collides, i.e., when the first rotating shaft and the column tube move together to the second rotating shaft. Because the friction force (namely damping force) generated by crimping when the strip-shaped member slides relative to the column tube is not changed or the change range is very small, the stability of the damping force of the steering column during collapse is effectively ensured.
As is well known to those skilled in the art, the force of friction is the pressure x the coefficient of friction. Therefore, the generation of the constant value frictional force will not be described in detail here.
Preferably, the column tube is fixedly connected with a guide bracket, and the strip-shaped member is a plate-shaped member bent into a U shape. One end of the strip-shaped component is fixedly connected with the mounting bracket, and the other end of the strip-shaped component is inserted between the guide bracket and the column tube and is pressed onto the column tube by the guide bracket. During the movement of the first rotary shaft and the column tube together toward the second rotary shaft, the mounting bracket withdraws the bar-shaped member from between the guide bracket and the column tube and moves the bar-shaped member along the U-shaped trajectory. In this process, the damping force includes a frictional force when the bar-shaped member is withdrawn from between the guide bracket and the column tube and a deformation force generated by deformation along the trajectory of the U-shape. Because the bar-shaped component takes place the deformation power that produced when same deformation is the same, so the utility model discloses an energy-absorbing formula steering column is also the same at the power of contracting of ulcerate that offers when contracting, and the process of contracting of ulcerate is more stable.
Further preferably, the mounting bracket and the bar-shaped member are connected together through a motor, a lead screw, a nut and a sliding plate which are connected in sequence, so that the sliding plate, the bar-shaped member, the column tube and the first rotating shaft can be driven by the motor to do telescopic motion relative to the second rotating shaft, the length of the steering column is automatically adjusted, and the height of the steering wheel is automatically adjusted. Specifically, the motor is fixedly connected with the mounting bracket, the screw rod is in driving connection with the motor, the nut is in threaded connection with the screw rod, the sliding plate is fixedly connected with the nut, and the one end of the strip-shaped member is fixedly connected to the sliding plate.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a side view of an energy absorbing steering column of the present invention;
FIG. 2 is a schematic view of the energy-absorbing steering column of the present invention in a normal state;
FIG. 3 is a schematic view of the energy-absorbing steering column according to the present invention in a collision condition;
fig. 4 is a partial cross-sectional view of an energy absorbing steering column of the present invention.
List of reference numerals:
1. a first rotating shaft; 2. a second rotating shaft; 3. a column tube; 4. mounting a bracket; 5. a guide bracket; 6. a bar-shaped member; 7. a motor; 8. a lead screw; 9. a nut; 10. a sliding plate; 11. a fixing pin;
41. a fixing plate; 42. a housing;
51. and (5) a compression block.
Detailed Description
It should be understood by those skilled in the art that the embodiments in this section 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 utility model discloses an energy-absorbing formula steering column's application is not only limited to the car, and it can also be applied to in arbitrary feasible occasion, such as sightseeing bus, recreation car, boats and ships etc.. Those skilled in the art can make modifications as needed to suit a particular application, and such modifications will still fall within the scope of the present invention.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships 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 element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" 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," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 and 2, the energy-absorbing steering column of the present invention mainly includes a first rotating shaft 1, a second rotating shaft 2, a column tube 3, a mounting bracket 4, a guide bracket 5, a bar-shaped member 6, a motor 7, a screw 8, a nut 9, and a sliding plate 10.
Although not explicitly shown in the drawings, the first rotary shaft 1 and the second rotary shaft 2 are coupled together in a circumferentially fixed, axially slidable manner. It will be appreciated by those skilled in the art that the first shaft 1 and the second shaft 2 may be connected in any feasible manner. For example, an internal spline is provided in the first rotating shaft 1, an external spline matching the internal spline is provided on the second rotating shaft 2, the second rotating shaft 2 is inserted into the first rotating shaft 1, and the connection is achieved by the matching spline.
Although not explicitly shown in the drawings, the column tube 3 is fitted around the outside of the first and second rotary shafts 1 and 2, and the column tube 3 and the first rotary shaft 1 are connected together in a circumferentially rotatable, axially fixed manner. It will be appreciated by those skilled in the art that the first shaft 1 and the vial 3 may be connected in any feasible manner. For example, two bearings are disposed between the first rotating shaft 1 and the column tube 3, so that both ends of the first rotating shaft 1 are fixedly connected to the inner ring of one bearing, respectively, and both ends of the column tube 3 are fixedly connected to the outer ring of one bearing, respectively, thereby achieving the above-mentioned connection.
As shown in fig. 1, the mounting bracket 4 is slidably connected to the column tube 3. Specifically, the mounting bracket 4 includes a fixing plate 41 and a housing 42 fixed together by a pin or a bolt, or one skilled in the art may integrally form the fixing plate 41 and the housing 42 as needed. Wherein the fixed plate 41 is mounted to the body of the automobile by bolts, and the housing 42 is slidably connected to the column tube 3 in the axial direction of the column tube 3. In the mounted state, the housing 42 and the column tube 3 are further fixed together through the motor 7, the lead screw 8, the nut 9, the sliding plate 10 and the bar-shaped member 6, so that the mounting bracket 4 cannot move relative to the column tube 3, and a driver can normally drive the automobile.
As shown in fig. 1 to 3, a housing of the motor 7 is fixedly connected to the mounting bracket 4 (specifically, the housing 42), the lead screw 8 is drivingly connected to an output shaft of the motor 7, the nut 9 is threadedly connected to the lead screw 8, and the nut 9 is fixedly connected to the sliding plate 10. In addition, in the assembled state, the housing 42 of the mounting bracket 4 can wrap the bar-shaped member 6, thereby preventing the bar-shaped member 6 from being polluted by the external environment.
As shown in fig. 2 to 4, the guide bracket 5 is fixedly connected or integrally formed with the column tube 3, and a pressing block 51 is further provided on a side of the guide bracket 5 facing the column tube 3. In the assembled state, the slide plate 10 is slidably connected to the guide bracket 5, and a through hole is provided in the slide plate 10 and a fixing hole is provided in the guide bracket 5. The fixing pins 11 are inserted into the fixing holes provided in the guide bracket 5 through the through holes provided in the slide plate 10 to fix the slide plate 10 and the guide bracket 5 together. Wherein the fixing pins 11 are arranged to be cut off when subjected to a preset shear force, thereby allowing the guide bracket 5 to slide on the slide plate 10. The preset shearing force refers to a shearing force generated on the fixing pin 11 by the tendency of the sliding plate 10 and the guide bracket 5 to slide relatively when the automobile collides. The value of the preset shear force can be obtained by experiments. Further, the fixing pin 11 is preferably made of a plastic material, or any other feasible material, such as ceramic, rubber, metal with low strength, etc., may be used by those skilled in the art as needed.
Although not shown in the drawings, when the energy-absorbing steering column of the present invention is installed on the automobile, the fixing plate 41 is fixedly connected to the automobile body of the automobile, one end of the second rotating shaft 2 away from the first rotating shaft 1 is connected to the steering gear of the automobile, and one end of the first rotating shaft 1 away from the second rotating shaft 2 is fixedly connected to the steering wheel of the automobile.
As shown in fig. 1 and 2, when the steering wheel needs to be adjusted in height, the motor 7 rotates forwards or backwards according to the instruction of the user, the lead screw 8 is driven to rotate, and the nut 9 is close to or far away from the motor 7 under the action of the thread pair. Along with the movement of the nut 9, the sliding plate 10, the fixing pin 11, the guide bracket 5, the column tube 3, the first rotating shaft 1, the bar-shaped member 6 and the steering wheel are moved closer to or farther from the second rotating shaft 2 together, thereby achieving the lifting of the steering wheel.
As shown in fig. 2 to 4, the bar member 6 of the present invention is a plate member bent into a U shape, and the bar member 6 is preferably made of a metal material. Furthermore, the person skilled in the art may also provide the strip-shaped member 6 with any other feasible member, such as a metal wire, a metal strip with a square cross-section, a rubber band, etc., as required, provided that the strip-shaped member 6 can be crimped together with the column tube 3.
As shown in fig. 4, the first end of the bar member 6 is fixedly connected to the sliding plate 10 by a bolt in an assembled state, or a person skilled in the art may fix the bar member 6 and the sliding plate 10 together by any other feasible connection means, such as welding, riveting, clamping, etc. The second end of the bar-shaped member 6 is inserted between the guide bracket 5 and the column tube 3 and is pressed against the column tube 3 by the pressing block 51. Furthermore, the person skilled in the art may omit the provision of the pressing block 51, if necessary, so that the guide bracket 5 directly presses the bar-shaped member 6 against the column tube 3. Alternatively, the person skilled in the art may also crimp the strip-shaped member 6 and the column tube 3 together in any other feasible manner. Illustratively, the crimping is performed by forming a strip-shaped hole in the strip-shaped member 6 in the longitudinal direction, providing a threaded hole in the column tube 3, and inserting a bolt through the strip-shaped hole and tightening the bolt.
With continued reference to fig. 4, in the assembled state, the U-shaped configuration of the strip-shaped element 6 is located at the lower end of the guide bracket 5. When the sliding plate 10 moves the first end of the bar-shaped member 6 upward, the portion of the bar-shaped member 6 inserted between the guide bracket 5 and the column tube 3 is sequentially bent into a U-shape and then straightened, and the bent portion is bent into a U-shape just like the lower end of the guide bracket 5 shown in fig. 4. For convenience of description, the U-shape is defined herein as a locus of the U-shape.
The collapsing energy absorption principle of the energy absorption type steering column of the present invention will be briefly described with reference to fig. 2 to 4.
In the event of a collision of the vehicle, the securing pin 11 is initially subjected to a force and is cut off. Subsequently the first rotary shaft 1 and the column tube 3 start to move towards the second rotary shaft 2 and the guide bracket 5 slides relative to the slide plate 10. In this process, the portion of the bar-shaped member 6 inserted between the guide bracket 5 and the column tube 3 is sequentially drawn out along the trajectory of the U-shape, generating a frictional force and a deformation force. The friction force is generated between the strip-shaped member 6 and the guide bracket 5 and the column tube 3 due to sliding friction, and the deformation force is generated when the strip-shaped member 6 is bent into a U shape and straightened.
The technical personnel in the field can understand that, because the packing force of guide bracket 5 and pillar 3 to bar 6 is unchangeable, so frictional force also does not change to because bar 6 takes place the same deformation produced power when changing is the same, makes the damping force and the energy-absorbing capacity that steering column produced through bar 6 unchangeable, and then makes the utility model discloses an energy-absorbing formula steering column can provide lasting stable energy-absorbing when the car bumps, has guaranteed driver's safety. Further, the utility model discloses a bar-shaped component 6 has still been wrapped up by the casing 42 of installing support 4, has avoided damping bar-shaped component 6 to be polluted by external environment, and the energy-absorbing function that contracts bursts is safe and reliable more.
Furthermore, the person skilled in the art may also arrange the strip-shaped members 6 to be of unequal width and/or unequal thickness, as required, so that the damping force generated by the strip-shaped members 6 varies correspondingly with the collapsing displacement thereof. By way of example, the bar-shaped member 6 is provided as a trapezoidal plate-shaped member, and the damping force generated by the bar-shaped member 6 can be gradually increased or decreased as the collapse displacement thereof.
Although not shown in the drawings, in another possible embodiment of the present invention, unlike the above-described preferred embodiment, the motor 7, the lead screw 8 and the nut 9 are omitted, and the sliding plate 10 is fixedly connected to the mounting bracket 4 (specifically, the housing 42). In this embodiment, the steering column cannot be automatically telescopically adjusted in length.
Although not shown in the drawings, in another possible embodiment of the present invention, unlike the above-described preferred embodiment, the arrangement of the motor 7, the lead screw 8, the nut 9 and the sliding plate 10 is omitted, and the first end of the bar member 6 is fixedly connected with the mounting bracket 4 (specifically, the housing 42), and the fixing pin 11 is used to fix the housing 42 and the guide bracket 5 together. In this embodiment, the steering column cannot be automatically telescopically adjusted in length.
It will be appreciated by those skilled in the art that in any of the embodiments described above, the fixing pin 11 may also be omitted in case the crimp between the bar member 6 and the column tube 3 is capable of supporting normal use of the energy absorbing steering column of the present invention.
Furthermore, although not shown, the present invention also provides an automobile including all or part of the features of the energy absorbing steering column described in any of the above embodiments.
So far, the technical solution of the present invention has been described with reference to 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. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Claims (10)
1. An energy-absorbing steering column is characterized in that the steering column comprises a first rotating shaft, a second rotating shaft and a column tube which are coaxially arranged,
the first rotating shaft and the second rotating shaft are connected together in a circumferentially fixed and axially slidable manner,
the column tube is sleeved outside the first rotating shaft and the second rotating shaft, and the column tube and the first rotating shaft are connected together in a manner of being rotatable along the circumferential direction and fixed along the axial direction;
the steering column further comprises a mounting bracket and a bar member,
the vial is axially slidably connected with the mounting bracket,
the strip-shaped member and the column tube are pressed together, one end of the strip-shaped member is also connected with the mounting bracket,
during the movement of the first rotary shaft and the column tube together toward the second rotary shaft, the bar-shaped member slides relative to the column tube and thus generates damping, hindering the movement of the first rotary shaft and the column tube.
2. An energy absorbing steering column according to claim 1, wherein the strap member is a plate-like member bent into a U-shape,
the connection between the bar-shaped member and the column tube is arranged such that the bar-shaped member moves along the U-shaped trajectory during the movement of the first axis of rotation and the column tube together towards the second axis of rotation.
3. An energy absorbing steering column according to claim 2, wherein a guide bracket is fixedly attached to the column tube, the bar member is interposed between the guide bracket and the column tube and is pressed against the column tube by the guide bracket, and the U-shaped trajectory is formed at one end of the guide bracket.
4. An energy absorbing steering column according to claim 3, wherein a compression block is provided on the side of the guide bracket facing the column tube, the guide bracket compressing the strip member to the column tube via the compression block.
5. The energy absorbing steering column according to claim 4, further comprising a motor fixedly coupled to the mounting bracket, a lead screw drivingly coupled to the motor, a nut threadably coupled to the lead screw, and a slip plate fixedly coupled to the nut,
the sliding plate is slidably coupled to the guide bracket, the sliding plate is fixedly coupled to the one end of the bar member,
the motor drives the sliding plate, the bar-shaped member, the column tube and the first rotating shaft to move together through the lead screw and the nut.
6. An energy absorbing steering column according to claim 4, further comprising a sliding plate fixedly connected to the mounting bracket, the sliding plate being slidably connected to the guide bracket, the sliding plate being fixedly connected to the one end of the bar member.
7. An energy absorbing steering column according to claim 5 or claim 6, further comprising a fixing pin inserted through a through hole provided in the sliding plate and a fixing hole provided in the guide bracket to fix the sliding plate and the guide bracket together;
the fixing pins are also configured to be cut off when subjected to a preset shear force, thereby allowing the sliding plate to slide on the guide brackets.
8. An energy absorbing steering column according to claim 7, wherein the anchor pin is formed from a plastics material.
9. An energy absorbing steering column according to any one of claims 1 to 6, wherein the mounting bracket comprises a fixed plate and a housing which are fixedly connected or integrally formed, the mounting bracket being slidably connected to the column tube via the housing and fixedly connected to the one end of the strap member.
10. An automobile, characterized in that it comprises an energy absorbing steering column according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920549974.3U CN210191573U (en) | 2019-04-22 | 2019-04-22 | Energy-absorbing steering column and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920549974.3U CN210191573U (en) | 2019-04-22 | 2019-04-22 | Energy-absorbing steering column and automobile |
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| Publication Number | Publication Date |
|---|---|
| CN210191573U true CN210191573U (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920549974.3U Active CN210191573U (en) | 2019-04-22 | 2019-04-22 | Energy-absorbing steering column and automobile |
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| CN (1) | CN210191573U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112455535A (en) * | 2020-12-08 | 2021-03-09 | 斯沃博达汽车电子（昆山）有限公司 | Automobile steering power-assisted system module unit and production process |
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2019
- 2019-04-22 CN CN201920549974.3U patent/CN210191573U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112455535A (en) * | 2020-12-08 | 2021-03-09 | 斯沃博达汽车电子（昆山）有限公司 | Automobile steering power-assisted system module unit and production process |
| CN112455535B (en) * | 2020-12-08 | 2024-03-12 | 斯沃博达汽车电子（昆山）有限公司 | Automobile steering power-assisted system module unit and production process |
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