阅读说明：本技术 一种转向柱连接支架、转向柱总成及汽车 (Steering column connecting support, steering column assembly and automobile ) 是由 路军凯 张鸿钧 刘佳龙 曾宇鹏 王香云 张云 于 2021-08-10 设计创作，主要内容包括：本发明涉及一种转向柱连接支架、转向柱总成及汽车,转向柱连接支架用于固定连接在汽车转向系统上,转向柱连接支架包括：第一刚性区、溃缩区和第二刚性区,所述溃缩区固定连接于所述第一刚性区和所述第二刚性区之间,所述第一刚性区用于和防火墙前围板固定连接,所述第二刚性区用于和CCB管柱横梁固定连接,所述溃缩区设置为当受到预设力时发生溃缩变形,在所述溃缩区发生溃缩变形时所述第二刚性区不发生形变。通过在第一刚性区和第二刚性区之间设置溃缩区,使得在汽车前部发生碰撞时转向柱连接支架在溃缩区可以发生结构溃缩,提升了整车碰撞安全性能；解决了现有技术中防火墙前围板侵入量过大,压缩乘客生存空间的问题。(The invention relates to a steering column connecting bracket, a steering column assembly and an automobile, wherein the steering column connecting bracket is fixedly connected to an automobile steering system and comprises: the device comprises a first rigid zone, a crumple zone and a second rigid zone, wherein the crumple zone is fixedly connected between the first rigid zone and the second rigid zone, the first rigid zone is used for fixedly connecting with a front wall panel of a firewall, the second rigid zone is used for fixedly connecting with a CCB tubular column beam, the crumple zone is set to deform when receiving preset force, and the second rigid zone does not deform when the crumple zone deforms. The crumple zone is arranged between the first rigid zone and the second rigid zone, so that the steering column connecting bracket can be structurally crumpled in the crumple zone when the front part of the automobile is collided, and the collision safety performance of the whole automobile is improved; the problem of among the prior art firewall front wall board invasion volume too big, compression passenger living space is solved.)

1. A steering column linking bracket for fixed connection to an automotive steering system, comprising: first rigid zone (1), the district that contracts of ulcerate (2) and second rigid zone (3), the district that contracts (2) fixed connection of ulcerate in first rigid zone (1) with between second rigid zone (3), first rigid zone (1) be used for with prevent hot wall preceding bounding wall fixed connection, second rigid zone (3) be used for with CCB tubular column crossbeam (4) fixed connection, the district that contracts (2) set up to take place to contract when receiving and warp when predetermineeing the power the district that contracts (2) and take place to contract when deforming the second rigid zone (3) do not take place to deform.

2. Steering column connection bracket according to claim 1, characterised in that the crumple zone (2) is provided with a convex bend (21), the bend (21) being arranged such that the bend (21) bends when the firewall front wall is pressed.

3. A steering column connection bracket according to claim 2, characterized in that the second rigid zone (3) is provided with a steering column connection portion (31), the second rigid zone (3) being fixedly connected with a steering column (5) in the steering system through the steering column connection portion (31), the steering column (5) being axially parallel to the CCB column cross member (4).

4. Steering column connection bracket according to claim 3, characterised in that the first rigid zone (1) is provided with a mounting beam (11), the mounting beam (11) being parallel to the steering column (5), the mounting beam (11) being axially perpendicular to the plane of the bend (21).

5. The steering column linking bracket of claim 4, characterized in that the mounting beam (11) is provided with a firewall dash panel mounting portion (111), the firewall dash panel is fixedly connected to the first rigid region (1) through the firewall dash panel mounting portion (111), and the first rigid region (1) is configured such that the mounting beam (11) is deformed by collapse at the firewall dash panel mounting portion (111) when the firewall dash panel is pressed.

6. Steering column connection bracket according to claim 1, characterized in that the second rigid zone (3) is provided with a mounting hole (32), the CCB column cross member (4) passing through the mounting hole (32) and being fixedly connected with the mounting hole (32).

7. The steering column connecting bracket according to claim 6, wherein the CCB column cross member (4) and the mounting hole (32) are fixedly connected by carbon dioxide arc welding.

8. Steering column connection bracket according to claim 1, characterized in that the first rigid zone (1), the crumple zone (2) and the second rigid zone (3) are of one-piece construction.

9. Steering column assembly, comprising a steering column (5), a CCB column cross member (4) and a steering column connection bracket according to any of claims 1-8, the steering column (5) being fixedly mounted on the steering column connection bracket, the steering column connection bracket being fixedly mounted on the CCB column cross member (4).

10. An automobile, characterized by comprising a steering column assembly according to claim 9.

Technical Field

The invention relates to the technical field of high-speed collision safety of automobiles, in particular to a steering column connecting support, a steering column assembly and an automobile.

Background

The steering column support on the CCB (CaX CXoss Beam, instrument board crossbeam) that the car is commonly used generally includes panel portion, Z shape support and the side plate portion of panel portion both sides, the welding of Z shape support one end is in panel portion one side inwards, and the other end also is fixed on the automobile body dash panel, panel portion then with panel board main Beam fixed connection, be equipped with the strengthening rib in the inboard of panel portion and side plate portion junction, steering column support, panel board main Beam and automobile body dash panel three link as an organic whole, and Z shape support and strengthening rib further improve and support fixed rigidity.

At present, the automobile CCB steering column support commonly used in the market, mainly satisfy NVH (Noise, vibxuation, HaXshiness, Noise, vibration, the roughness of sound vibration) performance, turn to the modal requirement in order to promote CCB, the design is mostly strengthening the supporting structure, however in whole automobile front portion bump process, it is limited to the invasion volume of controlling hot wall front boarding, lead to front portion frontal collision in-process interior decoration CCB steering column support to receive front deck motor/engine and prevent that hot wall front boarding extrusion leads to the invasion volume increase, compress passenger living space, the security performance reduces, can't effectual whole automobile collision security performance of promotion.

Therefore, it is desirable to provide a steering column connecting bracket that effectively improves collision safety performance and satisfies NVH performance of a whole vehicle to solve the above technical problems.

Disclosure of Invention

In order to solve the technical problem, the invention provides a steering column connecting bracket. The problem of among the prior art firewall front wall board invasion volume too big, compression passenger living space is solved.

The technical effects of the invention are realized as follows:

a steering column attachment bracket for fixed attachment to an automotive steering system, comprising: the device comprises a first rigid zone, a crumple zone and a second rigid zone, wherein the crumple zone is fixedly connected between the first rigid zone and the second rigid zone, the first rigid zone is used for fixedly connecting with a front panel of a firewall, the second rigid zone is used for fixedly connecting with a CCB tubular column beam, and a steering column connecting support is arranged to be used as the crumple zone deforms when the front panel of the firewall is extruded by collision of a front cabin motor or an engine, and the second rigid zone does not deform. Through set up the district that contracts of ulcerate between first rigid zone and second rigid zone for steering column linking bridge can take place the structure in the district that contracts of ulcerate when the car front portion bumps and contract, effectively guarantee the stability of the anterior collision in-process performance that contracts of ulcerate of whole car as a result, reduced the invasion amount of preventing hot wall front boarding, ensure the living space of passenger collision in-process, promoted whole car collision security performance, solved among the prior art in the collision in-process prevent hot wall front boarding invasion amount too big, compress passenger living space's problem.

Furthermore, the crumple zone is provided with a convex bending part, and the bending part is arranged to be bent when the firewall front panel is extruded. Through designing the crumple zone into the bending structure for steering column linking bridge does not occupy great arrangement space, can effectively expand peripheral functional electric device and a steering system's arrangement.

Furthermore, a steering column connecting part is arranged in the second rigid zone, the second rigid zone is fixedly connected with a steering column in the steering system through the steering column connecting part, and the axial direction of the steering column is parallel to the axial direction of the CCB column cross beam.

Further, the first rigid area is provided with a mounting beam, the mounting beam is parallel to the steering column, and the axial direction of the mounting beam is perpendicular to the plane where the bending part is located. Through setting up the installation roof beam and the steering column is parallel, installation roof beam axial perpendicular to kink place plane, the axial of installing the roof beam promptly and the axial of steering column are X to, the direction of installation roof beam to the steering column is Y to, make installation roof beam on the XZ cross-section, steering column and kink constitute the triangle-shaped structure, make ensure Y under the prerequisite of collapsing to the collision, also can guarantee Z NVH rigidity that makes progress, the shake problem of steering wheel at the in-process of traveling has been avoided, the balance of whole car security performance and NVH performance has been realized.

Further, be equipped with on the installation roof beam and prevent hot wall dash board installation department, prevent hot wall dash board and pass through prevent hot wall dash board installation department fixed connection in first rigidity district, first rigidity district sets up to work as prevent when hot wall dash board receives the extrusion the installation roof beam is in prevent that hot wall dash board installation department position takes place to burst and contracts and warp.

Further, the second rigid zone is provided with a mounting hole, and the CCB tubular column cross beam penetrates through the mounting hole and is fixedly connected with the mounting hole.

Further, the CCB tubular column cross beam and the mounting hole are fixedly connected in a carbon dioxide gas shielded welding mode.

Further, the first rigid zone, the crumple zone, and the second rigid zone are of a unitary structure.

In addition, still provide a steering column assembly, including steering column, CCB tubular column crossbeam and foretell steering column linking bridge, steering column fixed mounting be in on the steering column linking bridge, steering column linking bridge fixed mounting be in on the CCB tubular column crossbeam.

In addition, still provide an automobile, include above-mentioned steering column assembly.

As described above, the present invention has the following advantageous effects:

1) through set up the district that contracts of ulcerate between first rigid zone and second rigid zone for steering column linking bridge can take place the structure in the district that contracts of ulcerate when the car front portion bumps and contract, effectively guarantee the stability of the anterior collision in-process performance that contracts of ulcerate of whole car as a result, reduced the invasion amount of preventing hot wall front boarding, ensure the living space of passenger collision in-process, promoted whole car collision security performance, solved among the prior art in the collision in-process prevent hot wall front boarding invasion amount too big, compress passenger living space's problem.

2) Through designing the crumple zone into the bending structure for steering column linking bridge does not occupy great arrangement space, can effectively expand peripheral functional electric device and a steering system's arrangement.

3) Through setting up the installation roof beam and turning to the post parallel, installation roof beam axial perpendicular to kink place plane for on the XZ cross-section, installation roof beam, turning to post and kink constitute the triangle-shaped structure, thereby guaranteeing also can guarantee Z NVH rigidity that makes progress under the prerequisite that Y collapsed to the collision, avoided the shake problem of steering wheel at the in-process of traveling, realized the balance of whole car security performance and NVH performance.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art it is also possible to derive other drawings from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a steering column connecting bracket according to an embodiment of the present disclosure;

fig. 2 is a schematic structural view of a steering column connecting bracket according to an embodiment of the present disclosure before collision and collapse;

fig. 3 is a schematic structural view of a steering column connecting bracket according to an embodiment of the present disclosure after collision and collapse;

fig. 4 is a schematic structural diagram of a triangular structure formed by mounting a beam, a steering column and a bending portion on an XZ section according to an embodiment of the present application;

fig. 5 is a comparative data diagram of a front crash test according to the C-NCAP evaluation rule version 2022 and a C-IASI small offset crash test of the chinese automobile insurance association for testing the steering column connecting bracket to obtain a safe intrusion amount of crash, and a CAE simulation test for testing the steering column connecting bracket to obtain an NVH steering mode, according to the embodiment of the present application.

Wherein the reference numerals in the figures correspond to:

the mounting structure comprises a first rigid zone 1, a mounting beam 11, a firewall dash mounting part 111, a crumple zone 2, a bent part 21, a second rigid zone 3, a steering column connecting part 31, a mounting hole 32, a CCB column cross beam 4, a steering column 5, points A and points B.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1:

as shown in fig. 1, an embodiment of the present application provides a steering column connecting bracket for fixedly connecting to a steering system of an automobile, including: first rigid zone 1, the district of collapsing 2 and second rigid zone 3, the district of collapsing 2 fixed connection between first rigid zone 1 and second rigid zone 3, first rigid zone 1 be used for with prevent hot wall front panel fixed connection, second rigid zone 3 be used for with CCB tubular column crossbeam 4 fixed connection, steering column linking bridge sets up to be taken advantage of when preventing hot wall front panel and receive front deck motor or engine collision extrusion and the district of collapsing 2 takes place the deformation and the deformation does not take place in second rigid zone 3.

Specifically, the CCB tubular column crossbeam is an instrument board crossbeam, is installed at the front end of an automobile cab and hidden below the instrument board and is used for fixing the instrument board and accessories thereof, and the CCB tubular column crossbeam is used as a supporting piece below the instrument board and plays an important role in safe support.

Specifically, as shown in fig. 2 and 3, point B is the rear position of the CCB tubular column cross beam 4, point a is the position of a front cabin structure such as a front cabin motor or an engine, and in the collision process of the whole vehicle, the steering column connecting bracket can be structurally collapsed in the collapse area 2 by the extrusion (the extrusion direction is the X direction) of the front cabin structure such as the front cabin motor or the engine, so that the structural intrusion amount of the point B is reduced, the living space of a passenger is ensured, and the collision safety performance of the whole vehicle is improved. The direction from the front to the rear of the CCB column cross beam 4 is the X direction, the direction which is positioned on the plane of the automobile and is vertical to the X direction is the Y direction, and the direction which is vertical to the plane of the automobile is the Z direction.

Preferably, the crush zone 2 is provided with a convex bent portion 21, and the bent portion 21 is configured such that the bent portion 21 is bent when the firewall front panel is pressed. The crumple zone 2 is designed to be of a bending structure comprising a bending part 21, so that the steering column connecting support does not occupy a large arrangement space, and the arrangement of peripheral functional electric devices and a steering system can be effectively expanded.

Preferably, the second rigid area 3 is provided with a steering column connecting part 31, the second rigid area 3 is fixedly connected with a steering column 5 in a steering system through the steering column connecting part 31, and the axial direction of the steering column 5 is parallel to the axial direction of the CCB column cross beam 4.

Preferably, the first rigid zone 1 is provided with a mounting beam 11, the mounting beam 11 being parallel to the steering column 5, the mounting beam 11 being axially perpendicular to the plane of the bend 21.

It should be noted that, in the aspect of NVH performance, the structural design of the steering column connecting bracket that collapses during collision inevitably leads to a reduction in structural rigidity mode, resulting in a risk of steering wheel shaking during vehicle running, and the technical scheme principle of the present invention is to design a steering column connecting bracket with a special structure that can meet collapse of collision safety performance, and at the same time, the structure of the steering column connecting bracket can also provide sufficient rigidity to improve the system mode and meet the NVH performance requirement. The steering column linking bridge's structural principle is as shown in fig. 4, it is parallel to set up installation roof beam 11 and steering column 5, installation roof beam 11 axial perpendicular to kink 21 place plane for on the XZ cross-section, installation roof beam 11, steering column 5 and kink 21 constitute triangular structure, thereby ensure Y to the prerequisite of collapsing, also can guarantee Z upwards NVH rigidity at the car normal course of going (when not taking place to collide the collapse promptly), avoided the shake problem of steering wheel in the course of going, realized the balance of whole car security performance and NVH performance.

Preferably, the mounting beam 11 is provided with a firewall dash panel mounting portion 111, the firewall dash panel is fixedly connected to the first rigid region 1 through the firewall dash panel mounting portion 111, and the first rigid region 1 is configured such that the mounting beam 11 deforms at the firewall dash panel mounting portion 111 when the firewall dash panel is pressed.

Preferably, the second rigid region 3 is provided with a mounting hole 32, and the CCB column cross member 4 passes through the mounting hole 32 and is fixedly connected with the mounting hole 32.

Preferably, the CCB column cross beam 4 and the mounting hole 32 are fixedly connected by carbon dioxide arc welding.

Preferably, the first rigid region 1, the crush region 2 and the second rigid region 3 are of an integrated structure, so that the design process is simple and easy to assemble.

Specifically, in this embodiment, the steering column connecting bracket is a steel sheet metal part, the thickness is preferably 1.5mm, and in some other embodiments, the steel sheet metal part may be replaced by other rigid materials such as an aluminum sheet metal part, and the thickness of the plate material is adjusted by those skilled in the art through the rigidity of the material.

The collapsing process of the steering column connecting support comprises the following steps:

1) the front wall plate of the firewall is extruded by collision of a front cabin motor or an engine, and the bending part 21 is bent, so that the steering column connecting bracket is deformed in a crumpling mode in the crumpling area 2, and meanwhile, the second rigid area 3 is not deformed, and the requirement of rigidity modal performance is met;

2) the firewall dash panel mounting part 111 on the mounting beam 11 fixedly connected with the firewall dash panel is also subjected to collapsing deformation in the X direction;

3) the structure invasion amount of the point B is reduced, and the survival space of passengers is ensured.

In the embodiment of the application, the front impact test of 2022 version C-NCAP evaluation rules and the C-IASI small offset impact test of China automobile insurance Association are adopted to test the steering column connecting bracket to measure the safe impact intrusion amount, and the CAE simulation test is adopted to test the steering column connecting bracket to measure the NVH steering mode.

The collision safety intrusion amount is the intrusion amount of the point B when a collision occurs, and the smaller the intrusion amount is, the larger the living space reserved for passengers is, and the better the collision safety performance is; based on the requirement of the mode of the NVH system of the whole vehicle, the target of the NVH steering mode is larger than 37Hz, and the larger the difference value between the value of the NVH steering mode and the 37Hz is, the resonance frequency of the whole vehicle can be avoided, so that the risk that the steering system of the vehicle shakes in the driving process is avoided more effectively.

Fig. 5 shows the test results of the test performed on the steering column attachment bracket (optimized structure) provided with the crush zone 2 in the above-described embodiment and the steering column attachment bracket (original structure) in the prior art, respectively. The optimized structure corresponds to an optimized solution and the original structure corresponds to an original solution.

In terms of collision safety:

the above experimental data in fig. 5 illustrate that the intrusion amount of point B of the optimized structure of the present application, 40mm, is smaller than the intrusion amount of point B of the original structure, 89mm, after the collision, and therefore, the passenger survival space of the optimized structure of the present application is significantly increased compared to the original structure.

Meanwhile, in the original scheme, the relative displacement of A-B is smaller by 3mm, the steering column connecting support structure is stronger, and the collapse does not occur, so that the intrusion amount of the point B is directly increased; and the displacement of the point A-B is shown to be 78mm in the optimized scheme of the application, the steering column connecting support structure is collapsed, the collision energy is absorbed, the intrusion amount of the point B is reduced, the living space of passengers is ensured, and the collision safety performance is improved.

In terms of NVH performance (steering system modality):

based on the requirement of the mode of the entire vehicle NVH system, the mode target of the steering system needs to be larger than 37Hz, the NVH steering mode in the optimized scheme of the application is 38.5Hz, which is larger than the NVH steering mode in the original scheme, which is 38.1Hz, so that the risk of the steering system shaking in the vehicle running process is effectively avoided, and the entire vehicle NVH performance is improved.

Example 2:

the embodiment of the application provides a steering column assembly, including steering column 5, CCB tubular column crossbeam 4 and the steering column linking bridge among embodiment 1, steering column 5 fixed mounting is on steering column linking bridge, steering column linking bridge fixed mounting is on CCB tubular column crossbeam 4, and the both ends and the automobile body both sides A post structure fixed connection of CCB tubular column crossbeam 4. The steering column assembly structure is used for fixing a vehicle interior system, supporting the interior structure and providing support for the steering system by fixing the vehicle steering column system. Crumple at the collision in-process through the steering column linking bridge, prevent that the extrusion from preventing hot wall front boarding and leading to the invasion volume increase, ensure the living space of passenger's collision in-process, effectual whole car collision security performance that promotes.

Example 3:

the embodiment of the application provides an automobile, including the steering column assembly in embodiment 2 to realize the balance of collision security performance and NVH performance, the structural weakening design of steering column linking bridge in crumple zone 2 has ensured whole car collision security performance, has also satisfied the demand of rigidity modal property simultaneously, has promoted whole car NVH performance, has avoided the shake problem of steering wheel driving in-process.

As described above, the present invention has the following advantageous effects:

1) through set up the district that contracts of ulcerate between first rigid zone and second rigid zone for steering column linking bridge can take place the structure in the district that contracts of ulcerate when the car front portion bumps and contract, effectively guarantee the stability of the anterior collision in-process performance that contracts of ulcerate of whole car as a result, reduced the invasion amount of preventing hot wall front boarding, ensure the living space of passenger collision in-process, promoted whole car collision security performance, solved among the prior art in the collision in-process prevent hot wall front boarding invasion amount too big, compress passenger living space's problem.

2) Through designing the crumple zone into the bending structure for steering column linking bridge does not occupy great arrangement space, can effectively expand peripheral functional electric device and a steering system's arrangement.

3) Through setting up the installation roof beam and turning to the post parallel, installation roof beam axial perpendicular to kink place plane for on the XZ cross-section, installation roof beam, turning to post and kink constitute the triangle-shaped structure, thereby guaranteeing also can guarantee Z NVH rigidity that makes progress under the prerequisite that Y collapsed to the collision, avoided the shake problem of steering wheel at the in-process of traveling, realized the balance of whole car security performance and NVH performance.

Although the present invention has been described by way of preferred embodiments, the present invention is not limited to the embodiments described herein, and various changes and modifications may be made without departing from the scope of the present invention.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

The embodiments and features of the embodiments described herein above can be combined with each other without conflict.

While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.