Background
With the development of the automobile industry, the safety requirements of people on automobile driving are increasingly improved. The safety performance of the whole automobile is one of important indexes reflecting the design level of the automobile and is also a key factor influencing the psychology of consumers. Minimizing the mortality and injury level of occupants in a vehicle, particularly a passenger vehicle, during a traffic collision event is a core design technology for the development and manufacture of a complete vehicle. In a traffic accident, the probability of a side impact on the automobile is very high, and therefore, it is important to ensure the safety of passengers when the automobile is impacted on the side.
The automobile body is provided with three types of upright columns, namely an A column, a B column and a C column from front to back in sequence. For cars, the pillars, in addition to supporting, also function as door frames. Wherein, the A column is a connecting column for connecting the roof and the front cabin on the left front side and the right front side. The structural strength of the a-pillar plays a very important role in frontal and offset crash during a vehicle collision, and directly affects the structural integrity of the passenger compartment and the passenger living space. Motor vehicle bodies typically have an automobile rocker panel structure extending longitudinally along the body to define the bottom of front and rear door openings, and the rocker of the body is severely deformed due to concentrated stress during a side collision of the vehicle. As the degree of deformation of the rocker increases, and the amount of center filler entering the vehicle increases, the occupant may be more seriously injured. Therefore, the vehicle doorsill is a key part of a vehicle body, plays an important role in structural strength, rigidity and collision performance of the whole vehicle, and is an important structure for guaranteeing the side collision safety performance of the vehicle.
The vehicle door sill is generally welded to corresponding positions of an A pillar, a B pillar and a C pillar, and the lower part of the A pillar is in a lap joint with the door sill, so that the structure is weak, the lap joint area is insufficient in rigidity and strength and the energy absorption space is limited due to the influence of a welding process and design requirements. When the whole vehicle is in 25-degree offset collision, the threshold beam in the lower area of the A column is easy to deform seriously, so that the problem of overlarge invasion is caused, and the safety performance of the vehicle is further influenced. In the prior art, the threshold is generally reinforced by changing the cross section or increasing the wall thickness, so that the weight of the threshold beam is increased relatively, the lightweight design of a vehicle is not facilitated, the process is complex, and the manufacturing cost is high.
Therefore, there is a need for an improved vehicle rocker beam that solves the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a vehicle threshold beam with a support part, which is used for overcoming the technical problem that the threshold beam at the lower part of an A-pillar is easy to deform seriously to further influence the safety performance of a vehicle when the vehicle threshold beam in the prior art is subjected to offset collision.
The invention is realized by the following technical scheme:
a vehicle threshold beam with a support member comprises a threshold beam body and a metal support member arranged in the threshold beam body; one end of the threshold beam body is connected with the lower portion of the pillar A of the vehicle, a cavity structure is arranged inside the threshold beam body, the metal supporting piece is fixed in the cavity structure, and the metal supporting piece is located at the position corresponding to the lower portion of the pillar A.
Further, metal support's both ends are located respectively the threshold roof beam body with both sides around A post laminating plane department, metal support's tip is apart from the distance of laminating plane department is 80 ~ 120 mm.
Furthermore, the inside strengthening rib that is used for with the cavity structure subdividing into a plurality of die cavity that is equipped with of threshold roof beam body, threshold roof beam body with the corresponding position department in A post below has first die cavity, metal support spare locates in the first die cavity.
Furthermore, the shape of the metal support piece is matched with that of the first cavity, and the metal support piece is connected with the inner cavity wall of the first cavity in a welding mode.
Further, the material of threshold roof beam body is the aluminium alloy, the strengthening rib includes at least one first strengthening rib and at least one second strengthening rib, vertical direction setting is followed to first strengthening rib, the second strengthening rib sets up along the horizontal direction, first strengthening rib with the second strengthening rib all extends along automobile body length direction.
Preferably, the material of the metal support is 6082-T6 high-strength aluminum alloy, and the wall thickness of the metal support is at least 2 mm.
Preferably, the interior of the metal supporting part is a hollow structure, a third reinforcing rib is arranged in the hollow structure, the third reinforcing rib is arranged along the vertical direction, and the third reinforcing rib extends along the length direction of the metal supporting part.
Furthermore, the metal support comprises a bottom part, a top part arranged opposite to the bottom part and a side part connecting the bottom part and the top part, and weight-reducing holes are formed in the top part and the bottom part.
Further, the clearance between the metal support piece and the inner cavity wall of the first cavity is 1.5-3 mm.
Accordingly, the present invention provides a vehicle including the vehicle rocker beam with brace described above.
The implementation of the invention has the following beneficial effects:
according to the vehicle doorsill beam with the support member and the vehicle with the vehicle doorsill beam, the easily-deformed region of the doorsill beam at the corresponding position of the lower part of the A-pillar of the vehicle is reinforced and supported through the high-strength aluminum alloy support member, the overall structural strength is high, the deformation of the doorsill beam can be effectively reduced, the collision performance of the whole vehicle is improved, and the safety factor of the vehicle is improved. Moreover, adopt the performance of local support assurance threshold roof beam, need not whole die cavity of whole change threshold roof beam, also need not to increase the wall thickness of threshold roof beam, adopt among the prior art to change the cross-section or increase the mode that the wall thickness carries out the enhancement to the threshold, can reduce the weight of threshold roof beam by a wide margin, be favorable to the lightweight design of vehicle. In addition, the aluminum alloy supporting piece is adopted to reinforce the local part of the threshold beam, the process is simple, the manufacturing is convenient, and the production cost can be saved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the following examples. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms first, second, third and the like 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.
In the present invention, unless otherwise expressly stated or limited, the terms "connected" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise specified, terms of orientation such as "up, down, left, right, front, and rear" are defined with reference to the up-down direction, the left-right direction, and the front-rear direction of the vehicle.
Examples
In the present embodiment, referring to fig. 1-3, a vehicle rocker beam with a support member is provided, which includes a rocker beam body 1 and a metal support member 2 disposed inside the rocker beam body 1; one end of the threshold beam body 1 is connected with the lower portion of an A column of a vehicle, a cavity structure is arranged inside the threshold beam body 1, the metal supporting piece 2 is fixed in the cavity structure, and the metal supporting piece 2 is located at the corresponding position of the lower portion of the A column. The vehicle doorsill beam with the supporting piece is characterized in that the easily-deformed area of the doorsill beam at the lower part of the A-pillar is reinforced and supported through the metal supporting piece, so that the deformation of the doorsill beam can be effectively reduced, and the improvement of the collision performance of the whole vehicle is facilitated. Compared with the prior art, under the condition that the structure of the sill beam body is not changed or the wall thickness is increased, the problem that the sill beam in the lower area of the A column is seriously deformed during offset collision and further the invasion amount is overlarge is solved, the injury possibly caused to passengers is reduced, and the safety factor when the side collision of a vehicle is improved.
In this embodiment, according to the biography power passageway during offset collision, only strengthen the atress region, metal support member 2's both ends are located threshold roof beam body 1 and A post laminating plane front and back both sides respectively, and the distance of metal support member 2 tip apart from laminating plane department is 80 ~ 120 mm. Beyond this area, the contribution of the metal support 2 decreases rapidly, i.e. a stronger structure is added but the contribution to the crash performance is smaller.
In this embodiment, the sill beam body 1 is internally provided with a reinforcing rib for subdividing the cavity structure into a plurality of cavities, the sill beam body 1 is provided with a first cavity 111 at a position corresponding to the lower part of the a-pillar, and the metal supporting member 2 is arranged in the first cavity 111.
As a preferred embodiment, the shape of the metal support 2 is matched with the shape of the first cavity 111, and the metal support 2 is connected with the inner cavity wall of the first cavity 111 by welding, so that the connection process is simple and easy to implement, the structural strength of the doorsill is improved, and the stability is good.
In a specific embodiment, after the metal supporting part 2 is placed in the first cavity 111 through the tool, the metal supporting part is pre-fixed by using the positioning pin, and then is connected by aluminum arc welding, so that the supporting and reinforcing effects are achieved.
It should be noted that, in other embodiments, the metal supporting member 2 may be fixedly connected to the inner cavity wall of the first cavity 111 in other manners as long as the same function can be achieved.
In a specific embodiment, for the convenience of production and installation, and considering the supporting effect of the metal support 2 on the rocker beam body 1, the gap between the metal support 2 and the inner cavity wall of the first cavity 111 is 1.5-3 mm.
As a preferred embodiment, the gap between the metal stay 2 and the rocker beam body 1 is 2mm, which ensures effective support and reinforcement of the rocker beam body 1 while facilitating installation.
In this embodiment, threshold roof beam body 1's material is the aluminium alloy, adopts threshold roof beam body 1 of this material, and weight is little, and structural strength is big, is favorable to the lightweight design of car. The strengthening rib includes at least one first strengthening rib 11 and at least one second strengthening rib 12, and first strengthening rib 11 sets up along vertical direction, and second strengthening rib 12 sets up along the horizontal direction, and first strengthening rib 11 and second strengthening rib 12 all extend along automobile body length direction for threshold roof beam body 1 forms the grid box structure who does benefit to the energy-absorbing, can satisfy when the vehicle takes place frontal collision and side collision to the demand of rigidity and intensity, is favorable to having reduced the weight and the cost of part. And the setting of strengthening rib has still increased threshold roof beam body 1's intensity, and the frame construction that has grid formula cavity that this threshold roof beam body 1 formed for the crashworthiness of vehicle is outstanding more, excellent.
It should be noted that the arrangement of the reinforcing beads inside the rocker beam body 1 is not limited to the one described in the present embodiment, and in other embodiments, the reinforcing beads may be provided in other shapes and arrangements to meet the design requirements of the rocker beam of the vehicle.
As a preferred embodiment, the material of the metal support 2 is 6082-T6 high-strength aluminum alloy, and the material is high in strength, is not easy to deform when being impacted, can play a good supporting role for the threshold beam body 1, reduces the weight of the threshold beam, and meets the strength requirement.
The metal stay 2 may be made of other materials as long as the same function as described above can be achieved.
In this embodiment, the wall thickness of the support member 2 is at least 2mm to meet the support strength requirement.
In the present embodiment, referring to fig. 3, in consideration of the light weight design requirement of the vehicle, the interior of the metal support 2 is a hollow structure, a third reinforcing rib 21 is provided in the hollow structure, the third reinforcing rib 21 is provided in the vertical direction, and the third reinforcing rib 21 extends in the length direction of the metal support 2 in the hollow structure. The third reinforcing rib 21 reinforces the stress direction of the threshold beam to increase the structural strength of the threshold, and can effectively guide the transmission and dispersion of the side impact force in time when the side impact occurs, so that the weight of the threshold beam is reduced while the overall impact strength of the threshold beam is improved, and the light-weight requirement of the vehicle is met.
In this embodiment, the metal support 2 includes a bottom portion, a top portion disposed opposite to the bottom portion, and a side portion connecting the bottom portion and the top portion, and since the top portion and the bottom portion do not bear a load, lightening holes are formed in the top portion and the bottom portion, which is favorable for light weight design requirements of vehicles.
In the vehicle doorsill beam with the supporting piece in the embodiment, the metal supporting piece 2 is welded with the doorsill beam body 1, the connection process is simple, the metal supporting piece 2 is made of 6082-T6 high-strength aluminum alloy, the force is transferred through the metal supporting piece 2 when the collision happens according to the structure strengthening principle, the aluminum alloy supporting piece locally strengthens the first cavity 111 at the position, and the first cavity 111 is allowed to deform slightly. The vehicle sill beam has high overall structural strength, can effectively reduce the deformation of the sill beam, is favorable for improving the collision performance of the whole vehicle and improves the safety factor of the vehicle; and the process is simple, the manufacturing is convenient, and the production cost can be saved.
The present invention also provides a vehicle including a vehicle rocker beam with a brace as in the above embodiments. The vehicle sill beam with the supporting piece can effectively reduce the deformation of the sill beam and is beneficial to improving the collision performance of the whole vehicle; the light weight design of the vehicle is facilitated; and the process is simpler and the manufacturing cost is lower.
The above embodiment of the invention has the following beneficial effects: according to the vehicle doorsill beam with the support member and the vehicle with the vehicle doorsill beam, the easily-deformed region of the doorsill beam at the corresponding position of the lower part of the A-pillar of the vehicle is reinforced and supported through the high-strength aluminum alloy support member, the overall structural strength is high, the deformation of the doorsill beam can be effectively reduced, the collision performance of the whole vehicle is improved, and the safety factor of the vehicle is improved. Moreover, adopt the performance of local support assurance threshold roof beam, need not whole die cavity of whole change threshold roof beam, also need not to increase the wall thickness of threshold roof beam, adopt among the prior art to change the cross-section or increase the mode that the wall thickness carries out the enhancement to the threshold, can reduce the weight of threshold roof beam by a wide margin, be favorable to the lightweight design of vehicle. In addition, the aluminum alloy supporting piece is adopted to reinforce the local part of the threshold beam, the process is simple, the manufacturing is convenient, and the production cost can be saved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.