CN214930076U

CN214930076U - Longitudinal beam of vehicle and vehicle

Info

Publication number: CN214930076U
Application number: CN202023016134.2U
Authority: CN
Inventors: 蒋毅
Original assignee: Baoneng Automobile Group Co Ltd
Current assignee: Baoneng Automobile Group Co Ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-11-30
Anticipated expiration: 2030-12-14

Abstract

The utility model discloses a longeron and vehicle of vehicle, the length direction's of longeron one end have be used for with the connecting portion that the preceding bounding wall of vehicle is connected, just the longeron is equipped with and is used for inducing the induced portion of bending of the longeron energy absorption that contracts, wherein on the length direction of longeron, induced portion of bending with the interval of connecting portion is less than or equal to the third of the length of longeron. According to the utility model discloses longeron of vehicle, through set up the induced portion of bending on the longeron, and the induced portion of bending is less than or equal to the third of the length of longeron with the interval of connecting portion, makes the induced portion of bending can induce the longeron and crumple the energy-absorbing, effectively reduces the acceleration impact of collision, and reduces the uncontrollable deformation of longeron, and the induced bending performance of longeron is high, effectively reduces the invasion volume of dash board, the safety of protection passenger cabin.

Description

Longitudinal beam of vehicle and vehicle

Technical Field

The utility model relates to the field of automotive technology, more specifically relates to a longeron and vehicle of vehicle.

Background

The automobile longitudinal beam is the most important component in the automobile body structure, and the deformation of the middle and rear sections of the automobile longitudinal beam is a key factor influencing the increase of the invasion of the front wall plate in the automobile collision process. The unreasonable deformation of the middle and rear sections of the longitudinal beam can cause large invasion amount of the front wall plate in the collision process, and is not beneficial to protecting the safety of the passenger compartment.

In the related art, adopt the structure of strengthening the longeron root to resist longeron root and warp, it is poor to reduce the invasion volume effect of dash panel, and has increased the weight and the cost of longeron, is unfavorable for the car to subtract heavy.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a longeron of vehicle, the induced bending performance of longeron is high, can effectively reduce the invasion amount of dash panel among the collision process, protects the safety in passenger cabin.

Another object of the present invention is to provide a vehicle having the longitudinal beam of the above vehicle.

According to the utility model discloses longeron of vehicle, include: the automobile front wall structure is characterized in that one end of the longitudinal beam in the length direction is provided with a connecting portion used for being connected with a front wall plate of an automobile, the longitudinal beam is provided with an induced bending portion used for inducing the longitudinal beam to collapse and absorb energy, and the distance between the induced bending portion and the connecting portion is smaller than or equal to one third of the length of the longitudinal beam in the length direction of the longitudinal beam.

According to the utility model discloses longeron of vehicle, through set up the induced portion of bending on the longeron, and the induced portion of bending is less than or equal to the third of the length of longeron with the interval of connecting portion, makes the induced portion of bending can induce the longeron and crumple the energy-absorbing, effectively reduces the acceleration impact of collision, and reduces the uncontrollable deformation of longeron, and the induced bending performance of longeron is high, effectively reduces the invasion volume of dash board, the safety of protection passenger cabin.

In addition, the longitudinal beam of the vehicle according to the above embodiment of the present invention may further have the following additional technical features:

according to the utility model discloses some embodiments's longeron of vehicle in the length direction of longeron, the induced bend with the minimum interval of connecting portion is 50mm-100 mm.

According to some embodiments of the invention, the longitudinal beam comprises: the induction bending part is arranged on at least one of the inner plate and the outer plate.

According to some embodiments of the present invention, the induced bending portion includes a plurality of weakening holes, and a plurality of the weakening holes are distributed along the width direction of the longitudinal beam.

According to some embodiments of the present invention, the induced bending portion is a bending groove extending along the width direction of the longitudinal beam, the depth of the bending groove is 2mm to 6mm, and the size of the notch of the bending groove along the length direction of the longitudinal beam is 10mm to 30 mm.

According to some embodiments of the utility model, the induced portion of bending is including locating the first portion of bending of inner panel with locate the second portion of bending of planking, wherein, first portion of bending with the second portion of bending respectively with the interval of connecting portion equals.

According to some embodiments of the utility model, the inner panel includes interior body and locates the inside flanging of the width direction both sides of interior body, the planking includes outer body and locates the flanging of the width direction both sides of outer body, two the inside flanging respectively with two the flanging corresponds the connection, so that interior body with the cavity is injectd in the cooperation of outer body, wherein, at least one the inside flanging is equipped with first bending portion, and at least corresponding the flanging is equipped with the second bending portion.

According to some embodiments of the utility model, first bending portion for bend the groove and be formed in interior body and two the inside turn-ups, second bending portion for bend the groove and be formed in outer body and two the outside turn-ups, first bending portion with second bending portion communicates each other in order to constitute annular bending groove.

According to some embodiments of the present invention, the longitudinal beam includes a first beam body and a second beam body that are connected to each other, the second beam body is provided with the connecting portion and the induced bent portion, wherein the rigidity of the first beam body is smaller than the rigidity of the second beam body.

According to the utility model discloses vehicle, include according to the utility model discloses the longeron of vehicle.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of an outer panel according to some embodiments of the present invention;

fig. 2 is a schematic structural view of an inner panel according to some embodiments of the present invention;

fig. 3 is a sectional view taken along line a-a (B-B) of fig. 1 (fig. 2).

Reference numerals:

a connecting portion 10;

a bending part 20 is induced; a first bent portion 201; a second bend 202;

an inner plate 30; an inner body 31; an inner flange 32;

an outer panel 40; an outer body 41; the outer flange 42.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "a first feature" or "a second feature" may include one or more of the features, and "a plurality" means two or more, and the first feature may be "on" or "under" the second feature, and may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature therebetween, and the first feature being "on", "above" and "above" the second feature may include the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is higher in level than the second feature.

A longitudinal beam of a vehicle according to an embodiment of the present invention is described below with reference to the drawings.

Referring to fig. 1 and 2, according to the embodiment of the present invention, a longitudinal member of a vehicle has a connecting portion 10 at one end in a length direction, and the connecting portion 10 is used for being connected to a dash panel of the vehicle, so as to connect the longitudinal member to the dash panel. The longitudinal beam is further provided with a bent induction portion 20, the bent induction portion 20 is used for inducing collapse energy absorption of the longitudinal beam, and the distance between the bent induction portion 20 and the connecting portion 10 in the longitudinal direction of the longitudinal beam (for example, in the X direction shown in fig. 1) is less than or equal to one third of the length of the longitudinal beam.

Through set up the induced portion of bending 20 in the above-mentioned position range of longeron, when the car bumps, the induced portion of bending 20 can induce the longeron to bend the energy-absorbing according to preset deformation mode, the longeron is the bending deformation steadily, carry out Y to the power that receives the longeron to with Z to transmission, the unreasonable deformation of the middle and back section (being close to the part of connecting portion 10) of longeron has been reduced, effectively reduce the longeron and warp uncontrollably and the excessive deformation that causes and lead to the panel beating tear, risk such as solder joint inefficacy, the induced bending performance of longeron promotes, the invasion volume of dash panel has been reduced to collision in-process, thereby make passenger cabin invasion volume effectively reduce, the safety in passenger cabin has been protected.

And, compare with the structure of strengthening the longeron root in the correlation technique, the utility model discloses the mode that sets up induced portion of bending 20 has effectively reduced the structure complexity of longeron to reduce structure weight, be favorable to realizing the lightweight of longeron, and reduced manufacturing cost.

It should be noted that, in the embodiment of the present invention, one or more inducing bending portions 20 may be provided. In the embodiment that the number of the induced bending portions 20 is multiple, the distance between each induced bending portion 20 and the connecting portion 10 is less than or equal to one third of the length of the longitudinal beam.

In the embodiment of the present invention, the number of the induced bending portions 20 can be flexibly set according to actual situations, for example, the induced bending portions 20 can be two, three, four, five, six or more, which are all within the protection scope of the present invention.

In some embodiments, the induced bending portion 20 can be integrally formed with the longitudinal beam, and is simple to manufacture and high in production efficiency.

For convenience of description, the directions "X", "Y", and "Z" in the present invention are based on the orientation relationship shown in the drawings, and are not limited to the orientation in the practical application.

According to the utility model discloses longeron, through set up the induced portion of bending 20 on the longeron, and the induced portion of bending 20 and the third of the length of connecting portion 10's interval less than or equal to longeron, make the induced portion of bending 20 can induce the longeron energy-absorbing that contracts of bursting, effectively reduce the acceleration impact of collision, and reduce the uncontrollable deformation of longeron, the induced bending performance of longeron is high, effectively reduces the invasion amount of dash panel, protects the safety in passenger cabin.

According to some embodiments of the present invention, as shown in fig. 1 and fig. 2, in the length direction of the longitudinal beam, the minimum distance between the induced bending portion 20 and the connecting portion 10 is 50mm to 100mm, so as to ensure that the induced bending portion 20 has a good inducing effect on the longitudinal beam. In the event of a collision, the minimum distance between the bent portion 20 and the connecting portion 10 is within the above range, so that the bending deformation of the side member can be controlled, the intrusion amount of the dash panel is reduced, and the side member portion between the bent portion 20 and the connecting portion 10 is less likely to deform. For example, in some embodiments, the minimum spacing of induced bends 20 from connection 10 can be 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, etc.

In the embodiment where there are a plurality of induced bent portions 20, the plurality of induced bent portions 20 may be distributed along the longitudinal direction of the longitudinal beam, and the minimum distance is the distance between the induced bent portion 20 closest to the connecting portion 10 and the connecting portion 10.

In some embodiments of the present invention, as shown in fig. 1 and 2, the stringer includes an inner panel 30 and an outer panel 40. The induced bending portion 20 is provided in at least one of the inner panel 30 and the outer panel 40, and both can achieve an effect of inducing the longitudinal beam by the induced bending portion 20, and improve controllability of bending deformation of the longitudinal beam.

The specific structure of the induction bending part 20 can be flexibly set according to actual conditions. For example, in some embodiments, the induced bend portion 20 may include a plurality of weakening holes distributed along the width direction of the side member (e.g., along the Z direction shown in fig. 1), so that the plurality of weakening holes weaken the local structural strength of the side member, so as to induce the collapse energy absorption of the side member during the vehicle collision, and the induced bend performance of the side member is good, thereby effectively reducing the intrusion amount of the passenger compartment. Moreover, the weakening hole has a simple structure, is easy to process, and effectively reduces the production cost.

In the embodiment of the present invention, the number of the weakening holes can be flexibly set according to actual situations, for example, the weakening holes can be two, three, four, five, six or more, which is within the protection scope of the present invention.

For another example, in some embodiments, as shown in fig. 1 to 3, the induced bent portion 20 may be a bent groove extending in the width direction of the side member, and the bent groove is more easily bent and deformed in the collision so as to transmit the collision force in the length direction of the side member in the width direction and the thickness direction.

Furthermore, in some embodiments, as shown in FIGS. 1-3, the depth of the bending groove may be 2mm-6mm, i.e., the depth of the bending groove is L1 and satisfies 2mm ≦ L1 ≦ 6 mm. The size of the notch of the bending groove along the length direction of the longitudinal beam can be 10mm-30mm, namely the size of the notch of the bending groove along the length direction of the longitudinal beam is L2 and satisfies that L2 is more than or equal to 10mm and less than or equal to 30 mm. The bending groove is not easy to bend due to the fact that the depth of the bending groove is too small or the size of the notch of the bending groove is too small, and the induced bending effect is poor; an excessive depth of the bending groove or an excessive size of the notch of the bending groove may result in poor structural strength of the longitudinal beam. Within the size range, the strength requirement required by the longitudinal beam can be met, and the induced bending effect of the bending groove on the longitudinal beam is obvious, so that the induced bending performance of the longitudinal beam is good.

For example, in some embodiments, the depth of the bending groove may be 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, etc., and the notch of the bending groove may have a dimension along the length of the stringer of 10mm, 15mm, 20mm, 25mm, 30mm, etc.

It should be noted that the cross-sectional structure of the bending groove can be flexibly configured according to actual requirements, for example, the cross-section of the groove wall of the bending groove can extend along at least one of a straight line, a curve, a broken line, and the like. The cross-sectional shape of the bending groove may be trapezoidal as shown in fig. 3, or may be semicircular, triangular, or the like.

For example, in some embodiments, as shown in fig. 3, the induced bent portion 20 is a bent groove extending along the width direction of the longitudinal beam, the depth of the bent groove is 5mm, the size of the notch of the bent groove along the length direction of the longitudinal beam is 20mm, the longitudinal beam meets the required rigidity requirement, and the inducing effect of the induced bent portion 20 is good.

According to some embodiments of the present invention, as shown in fig. 1 and 2, the induced bending portion 20 includes a first bending portion 201 and a second bending portion 202. The first bending portion 201 is disposed on the inner panel 30, the second bending portion 202 is disposed on the outer panel 40, and the first bending portion 201 and the second bending portion 202 are respectively equal to the distance between the connecting portion 10, that is, the first bending portion 201 of the inner panel 30 is opposite to the second bending of the outer panel 40, so that the induced bending effect of the induced bending portion 20 on the longitudinal beam is further improved.

It should be noted that, first portion 201, the second portion 202 of bending can be the groove of bending, perhaps is the reduction hole, also can be for the combination in groove of bending and reduction hole, and the homoenergetic enough realizes the induction to the longeron, and forming process is simple, and the induction is bent effectually, and this is all within the protection scope of the utility model.

In some embodiments, as shown in fig. 1 and 2, the inner panel 30 includes an inner body 31 and inner flanges 32, and the inner flanges 32 are provided on both sides of the inner body 31 in the width direction (e.g., in the Z direction shown in fig. 2). The outer panel 40 includes an outer body 41 and flanged edges 42, the flanged edges 42 are disposed on two sides of the outer body 41 in the width direction (for example, in the Z direction shown in fig. 1), and the two flanged edges 32 are respectively connected to the two flanged edges 42, so that the inner body 31 and the outer body 41 cooperate to define a cavity, and the longitudinal beam has high strength and light weight, and can realize light weight of the vehicle.

In addition, at least one of the inner flanges 32 is provided with a first bent portion 201, and at least the outer flange 42 corresponding to the inner flange 32 provided with the first bent portion 201 is provided with a second bent portion 202, so that the first bent portion 201 and the second bent portion 202 correspond to each other in the inner and outer directions (i.e., the thickness direction) of the side member, thereby improving the effect of induced bending, enhancing the deformation controllability when the inner panel 30 collides with the outer panel 40, and reducing the intrusion amount of the dash panel.

For example, in the example shown in fig. 1 and 2, the first bending portion 201 and the second bending portion 202 are both bending grooves, the first bending portion 201 is formed on one of the inward turned edges 32, the second bending portion 202 is formed on the outer body 41 and one of the outward turned edges 42, and the second bending portion 202 formed on the outward turned edge 42 is opposite to the first bending portion 201 formed on the inward turned edge 32, so that the bending grooves of the inner panel 30 and the outer panel 40 are penetrated, and the bending inducing effect is improved.

For another example, in some embodiments, the first bending portion 201 is a bending groove, the first bending portion 201 is formed on the inner body 31 and the two inward turned edges 32, the second bending portion 202 is a bending groove, the second bending portion 202 is formed on the outer body 41 and the two outward turned edges 42, the first bending portion 201 and the second bending portion 202 are communicated with each other to form an annular bending groove, the rigidity of the positions where the first bending portion 201 and the second bending portion 202 are located is further weakened, the induced bending performance of the longitudinal beam is better, and the intrusion amount of the dash panel is reduced.

According to the utility model discloses a some embodiments, the longeron is including the first roof beam body and the second roof beam body that link to each other, and the second roof beam body is equipped with connecting portion 10 and the induced portion of bending 20, and the rigidity of the first roof beam body is less than the rigidity of the second roof beam body. In other words, the longitudinal beam is formed by splicing two parts with different rigidity. When a vehicle collides, the longitudinal beam receives an acting force in the X direction, so that the first beam body can be crumpled and absorbed under the induction of the acting force in the X direction and the induction bent part 20, and the acting force in the X direction is transmitted to the Y direction and the Z direction, so that the acting force transmitted to the front panel through the connecting structure of the connecting part 10 of the second beam body and the front panel is reduced, the invasion amount of the front panel is reduced, and the safety of a passenger compartment is protected.

In some embodiments, the length of the first beam is twice that of the second beam, i.e. the first beam corresponds to the front section and the middle section of the longitudinal beam, the second beam corresponds to the rear section of the longitudinal beam, the front section and the middle section of the longitudinal beam are subjected to collapse energy absorption, the rear section of the longitudinal beam is connected with the front wall plate, and the induced bending portion 20 is located on the rear section of the longitudinal beam.

In some embodiments, the first beam body and the second beam body may be made of different materials, and the deformation of the longitudinal beam is induced by using the rigidity difference of the materials. For example, the strength of the material of the first beam may be lower than the strength of the material of the second beam, so that the rigidity of the first beam is lower than that of the second beam.

In some embodiments, the plate thicknesses of the first beam body and the second beam body can be different, and the deformation of the longitudinal beam is induced by using the rigidity difference formed by the different plate thicknesses. For example, the plate thickness of the first beam may be less than the plate thickness of the second beam, such that the stiffness of the first beam is less than the stiffness of the second beam.

According to the utility model discloses vehicle includes according to the utility model discloses the longeron of vehicle. Because according to the utility model discloses the longeron has above-mentioned profitable technological effect, consequently according to the utility model discloses the vehicle, through set up induced portion of bending 20 on the longeron, and the interval of induced portion of bending 20 and connecting portion 10 is less than or equal to the third of the length of longeron, make induced portion of bending 20 can induce the longeron energy-absorbing that contracts of bursting, effectively reduce the acceleration of collision and strike, and reduce the uncontrollable deformation of longeron, the induced bending performance of longeron is high, effectively reduce the invasion volume of dash panel, the safety of protection passenger cabin.

Other configurations and operations of the longitudinal member and the vehicle according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description of the present invention, it is to be noted that, 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; can be mechanically or electrically 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 in specific cases to those skilled in the art.

In the description herein, references to the description of the terms "embodiment," "specific embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A longitudinal beam of a vehicle, characterized in that one end in a longitudinal direction of the longitudinal beam has a connecting portion for connecting with a dash panel of the vehicle, and the longitudinal beam is provided with an induced bent portion for inducing crush absorption energy of the longitudinal beam, wherein,

in the length direction of the longitudinal beam, the distance between the induced bending part and the connecting part is less than or equal to one third of the length of the longitudinal beam.

2. The vehicle longitudinal member according to claim 1, wherein a minimum distance between the induced bending portion and the connecting portion in a longitudinal direction of the longitudinal member is 50mm to 100 mm.

3. The vehicle rail of claim 1, wherein the rail comprises:

the induction bending part is arranged on at least one of the inner plate and the outer plate.

4. The vehicle side rail according to claim 3, wherein the induced bend portion includes a plurality of weakened holes distributed in a width direction of the side rail.

5. The vehicle longitudinal beam according to claim 3, wherein the induced bending portion is a bending groove extending in a width direction of the longitudinal beam, the bending groove has a depth of 2mm to 6mm, and a notch of the bending groove has a dimension of 10mm to 30mm in a length direction of the longitudinal beam.

6. The vehicle longitudinal beam of claim 3, wherein the induced bend portion includes a first bend portion provided in the inner panel and a second bend portion provided in the outer panel, wherein the first bend portion and the second bend portion are respectively spaced apart from the connecting portion by the same distance.

7. The vehicle side member according to claim 6, wherein the inner panel includes an inner body and inner flanges provided on both sides in a width direction of the inner body, the outer panel includes an outer body and outer flanges provided on both sides in the width direction of the outer body, and the two inner flanges are respectively connected to the two outer flanges in correspondence to each other so that the inner body and the outer body cooperate to define a cavity, wherein,

at least one the inside flanging is equipped with first portion of bending, and at least corresponding the outside flanging is equipped with the second portion of bending.

8. The vehicle longitudinal member of claim 7, wherein the first bending portion is a bending groove and is formed in the inner body and the two inner flanges, the second bending portion is a bending groove and is formed in the outer body and the two outer flanges, and the first bending portion and the second bending portion communicate with each other to form an annular bending groove.

9. The vehicle longitudinal member according to any one of claims 1 to 8, comprising a first member and a second member connected to each other, the second member being provided with the connecting portion and the induced bend portion, wherein the first member has a rigidity lower than that of the second member.

10. A vehicle, characterized by comprising a longitudinal beam of a vehicle according to any one of claims 1-9.