KR20220042819A - A front impact absorbing frame for electric vehicle - Google Patents

Abstract

The present invention relates to a front impact absorbing frame for an electric vehicle and more particularly, to a front impact absorbing frame for an electric vehicle that effectively distributes and absorbs a front impact force with a deformation-inducing member. The front impact absorbing frame for absorbing a front impact on an electric vehicle comprises: a bumper beam; a first transverse beam connected to a rear end of the bumper beam and arranged in a vehicle width direction; a second transverse beam arranged at a rear end of the first transverse beam; a first vertical beam connecting the bumper beam and the first transverse beam; a second vertical beam connecting the first transverse beam and the second transverse beam; and a first deformation-inducing unit and a second deformation-inducing unit provided on the first vertical beam and the second vertical beam, respectively. The front impact absorbing frame overcomes the structural limitations of small electric vehicles and much better absorbs front impact, thereby protecting occupants in a boarding space against shock from a frontal collision.

Description

A front impact absorbing frame for electric vehicle

The present invention relates to a front shock absorbing frame for an electric vehicle, and more particularly, to an electric vehicle front shock absorbing frame that provides a deformation inducing member to effectively disperse and absorb a front impact force.

An electric vehicle is a means of transportation operated using electric energy, and has recently been spotlighted as a next-generation means of transportation for environmental issues and energy efficiency.

The popularity of electric vehicles has been on the rise in recent years, led by American electric vehicle maker Tesla.

Meanwhile, in the recent electric vehicle market, there are expensive electric vehicle models such as Tesla, but electric vehicles for two people are also appearing due to miniaturization and light weight, and the expansion of the personal mobility market for one person.

However, in the case of such a small electric vehicle, there are many parts that are vulnerable to a frontal collision.

This is because, since the battery capacity that can be installed in a small electric vehicle is small, there is a limit to minimizing the structure of an incidental beam when considering the mileage.

Therefore, in the case of a conventional small electric vehicle, the beam structure is very simple, and there is a problem in that safety is not guaranteed in the event of an accident.

In particular, in the case of a vehicle accident, most accidents that seriously injure a driver may occur in a frontal collision.

Nevertheless, the small electric vehicle still has a structure that is vulnerable to a frontal collision, which is a problem.

KR1220768 B2

The present invention for overcoming the problems of the prior art as described above is to provide an electric vehicle beam that can protect the occupants of the boarding space from the impact in the case of a front collision by better absorbing the front impact of a small electric vehicle having a structural limit. There is a purpose.

A front shock absorbing frame for absorbing a front collision shock of an electric vehicle, comprising: a bumper beam (11); a first transverse beam 12 connected to the rear end of the bumper beam 11 and disposed in the vehicle width direction; a second transverse beam 13 disposed at the rear end of the first transverse beam 12; a first vertical beam 21 connecting the bumper beam 11 and the first horizontal beam 12; a second vertical beam (22) connecting the first horizontal beam (12) and the second horizontal beam (13); The first vertical beam 21 and the second vertical beam 22 have a first deformation inducing part and a second deformation inducing part, respectively; It includes an electric vehicle front shock absorption frame, characterized in that it is included.

In addition, the first deformation inducing portion includes an electric vehicle front shock absorption frame, characterized in that the first intaglio groove portion (21-3, 21-4, 21-5, 21-6) is formed so as to be deformed upon impact. .

In addition, the second deformation inducing portion includes an electric vehicle front shock absorbing frame, characterized in that the second intaglio groove (22-5, 22-6, 22-7) is formed so as to be deformed upon impact.

In addition, the size of the second intaglio groove portion (22-5, 22-6, 22-7) is larger than the size of the first intaglio groove portion (21-3, 21-4, 21-5, 21-6) It includes an electric vehicle front shock absorption frame, characterized in that.

In addition, the first engraved groove portions (21-3, 21-4, 21-5, 21-6) are electric vehicle front shock absorbing frame, characterized in that arranged at regular intervals along the first vertical beam (21) includes

In addition, the second intaglio groove portions 22-5, 22-6, 22-7 are arranged at regular intervals along the second vertical beam 22, and the second adjacent to the first horizontal beam 12. It includes an electric vehicle front shock absorbing frame, characterized in that only 1/2 of the length of the vertical beam 22 is formed.

In addition, the cross-sections of the bumper beam 11, the first horizontal beam 12, the second horizontal beam 13, the first vertical beam 21 and the second vertical beam 22 are rectangular. It includes an electric vehicle front shock absorption frame, characterized in that.

In addition, the interior of the first transverse beam 12 and the second transverse beam 13 includes an electric vehicle front shock absorbing frame, characterized in that the center solid portion 200 provided long along the longitudinal direction is formed.

In addition, the center solid portion 200 is supported on four sides by the hollow tube rib portions (111, 112, 113, 114) extending from the inner walls of the first cross beam (12) and the second cross beam (13) Electric, characterized in that Including the front shock absorption frame of the vehicle.

In addition, the interior of the bumper beam 11, the first vertical beam 21, and the second vertical beam 22 includes an electric vehicle front shock absorption frame, characterized in that formed of a solid.

In addition, the first intaglio groove portion (21-3, 21-4, 21-5, 21-6) and the second intaglio groove portion (22-5, 22-6, 22-7) has a cross section of the first engraved groove The first vertical beam 21 and the second vertical beam 22 include an electric vehicle front shock absorbing frame, characterized in that it is located at each vertex.

In addition, the bumper beam 11 , the first horizontal beam 12 , the second horizontal beam 13 , the first vertical beam 21 , and a tapped hole 105 are formed in the second vertical beam It includes an electric vehicle front shock absorption frame, characterized in that.

In addition, in the first transverse beam 12 and the second transverse beam 13 in which the tapped hole 105 is formed, a battery pack power distributor (PDU), a vehicle controller (VCU), and a low voltage mounted in the electric vehicle are provided. At least one of the converter (LDC) and the charger (OBC) includes an electric vehicle front shock absorption frame, characterized in that it is fixed.

In addition, the tapped hole 105 to which at least one of a battery pack power distributor (PDU), a vehicle controller (VCU), a low voltage converter (LDC), and a charger (OBC) mounted on the electric vehicle is not fixed is deformed during a collision It includes an electric vehicle front shock absorption frame, characterized in that formed for.

According to the present invention as described above, there are the following effects.

First, the strength of being able to protect the occupants of the boarding space from the impact of a frontal collision is demonstrated by better absorbing frontal impact beyond the structural limit of small electric vehicles.

Second, since it includes three shock-absorbing beams, it has the advantage of maximizing the amount of front shock absorption.

Third, there is an advantage of maximizing the ease of manufacture and productivity because it can smoothly absorb the front impact shock even with a simple structure.

1 is an overall perspective view of a front shock absorbing frame for an electric vehicle according to a preferred embodiment of the present invention;
2 is an enlarged view of the first vertical beam installed between the bumper beam and the first horizontal beam of the front shock absorbing frame of the electric vehicle according to the preferred embodiment of the present invention;
3 is an enlarged view of an electric vehicle front shock absorbing frame connected to a second horizontal beam and a third horizontal beam according to a preferred embodiment of the present invention;
4 is a perspective view of a second transverse beam and a third transverse beam of a front shock absorbing frame for an electric vehicle according to a preferred embodiment of the present invention;
5 is a cross-sectional view of a second transverse beam and a third transverse beam of an electric vehicle front shock absorbing frame according to a preferred embodiment of the present invention;
6 is a modified view when a front shock is generated in the front shock absorbing frame of the electric vehicle according to the preferred embodiment of the present invention.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing each figure, like reference numerals are used for like elements.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. The term “and/or” includes a combination of a plurality of related listed items or any of a plurality of related listed items.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. shouldn't

The front shock absorbing frame of the electric vehicle according to a preferred embodiment of the present invention is a bumper beam 11, a first horizontal beam 12, a second horizontal beam 13, a first vertical beam 21 and a second vertical beam ( 22) may be included.

At this time, it may be preferable that the cross-sections of the bumper beam 11 , the first horizontal beam 12 , the second horizontal beam 13 , the first vertical beam 21 and the second vertical beam 22 are rectangular. .

In addition, the inside of the bumper beam 11, the first vertical beam 21 and the second vertical beam 22 may be preferably formed of solid.

The bumper beam 11 forms the frontmost part of the electric vehicle beam.

The first transverse beam 12 is connected to the rear end of the bumper beam 11 and disposed in the vehicle width direction.

The first transverse beam 12 and the second transverse beam 13 are disposed in the vehicle width direction, and may be disposed side by side with the bumper beam 11 .

The second cross beam 13 is disposed at the rear end of the first cross beam 12 .

The first vertical beam 21 connects the bumper beam 11 and the first horizontal beam 12 .

Meanwhile, the first vertical beam 21 may include a first deformation inducing member 21-1 and a second deformation inducing member 21-2 spaced apart from each other by a predetermined distance.

The second vertical beam 22 connects the first horizontal beam 12 and the second horizontal beam 13 .

It may be preferable that the first vertical beam 21 and the second vertical beam 22 include a first deformation inducing part and a second deformation inducing part, respectively.

In more detail, the second vertical beam 22 is a third deformation inducing member 22-1, a fourth deformation inducing member 22-2, a fifth deformation inducing member 22-3, and a sixth deformation inducing member. (22-4) may be included.

The third deformation inducing member 22-1 and the sixth deformation inducing member 22-4 are maximally spaced apart from each other, and the fourth deformation inducing member 22-2 and the fifth deformation inducing member 22-3 are separated from each other. is adjacent to the maximum.

The distance between the third deformation inducing member 22-1 and the fourth deformation inducing member 22-2 may be the same as the distance between the fifth deformation inducing member 22-3 and the sixth deformation inducing member 22-4. there is.

On the other hand, the distance between the fourth deformation inducing member 22-2 and the fifth deformation inducing member 22-3 is greater than the distance between the third deformation inducing member 22-1 and the fourth deformation inducing member 22-2. can

In addition, the length of the bumper beam 11 may be shorter than the distance between the fourth deformation inducing member 22-2 and the fifth deformation inducing member 22-3.

The first vertical beam 21 is connected to the first transverse beam 12 between the fourth deformation inducing member 22-2 and the fifth deformation inducing member 22-3.

On the other hand, the first transverse beam 12 and the second transverse beam 13 may be formed to have the same length as each other, and the bumper beam 11 is shorter than the first transverse beam 12 and the second transverse beam 13 . .

At this time, a protrusion 22-9 may be provided at the end of the second vertical beam 22 in the longitudinal direction, and the protrusion 22-9 is a fastening groove formed on the side surface of the first transverse beam 12 ( 12-1) and can be assembled.

On the other hand, the first vertical beam 21 may include a first deformation inducing part.

The first deformation inducing part may be provided with a first intaglio groove (21-3), a second intaglio groove (21-4), a third intaglio groove (21-5), and a fourth intaglio groove (21-6), It is a structure that can be deformed upon impact.

It may be preferable that the size of the second intaglio groove portion is larger than the size of the first intaglio groove portion.

In more detail, the first intaglio groove 21-3, the second intaglio groove 21-4, the third intaglio groove 21-5, and the fourth intaglio groove 21-6 constituting the first intaglio groove portion are They have the same shape as each other, and may be formed at equal intervals at each of the four corners along the longitudinal direction of the first vertical beam 21 .

In other words, the first intaglio groove portion (21-3, 21-4, 21-5, 21-6) and the second intaglio groove portion (22-5, 22-6, 22-7) is a first longitudinal It may be preferable to be located at every vertex of the beam 21 and the second longitudinal beam 22 .

The first intaglio groove 21-3 may be formed by being depressed in a V-shape from the side surface of the first vertical beam 21 .

Since the first deformation inducing part is formed by being depressed in a V-shape, when an impact force is transmitted in the longitudinal direction of the first vertical beam 21, the first intaglio groove 21-3, the second intaglio groove 21-4, the second Since the third intaglio groove 21-5 and the fourth intaglio groove 21-6 are bent at an angle with respect to the longitudinal direction, the effect of dispersing the impact force is exhibited.

Accordingly, it is possible to minimize the impact force transmitted from the bumper beam 11 to the first horizontal beam 12 when the electric vehicle collides forward.

In addition, the second vertical beam 22 may include a second deformation inducing part.

As a whole, it may be preferable that the second deformation inducing part is formed only in a predetermined section with respect to the longitudinal direction of the second vertical beam 22 .

In more detail, the second deformation inducing part may be formed to be biased toward the first transverse beam 12 .

The second deformation inducing part may be provided with a fifth engraved groove 22-5, a sixth engraved groove 22-6, and a seventh engraved groove 22-7 constituting the second engraved groove.

The second intaglio groove portion is arranged at regular intervals along the second vertical beam 22, it may be preferable to be formed only up to 1/2 the length of the second vertical beam 22 close to the first horizontal beam 12.

The fifth intaglio groove 22-5, the sixth intaglio groove 22-6, and the seventh intaglio groove 22-7 constituting the second deformation inducing part have the same shape as each other, and It may be formed at equal intervals in each of the four corners along the longitudinal direction.

More specifically, since the second deformation inducing part is formed by being depressed in a V-shape, when the impact force is transmitted in the longitudinal direction of the second vertical beam 22 , the fifth engraved groove 22-5, the sixth engraved groove 22 -6), since it is bent at an angle with respect to the longitudinal direction in each of the seventh engraved grooves 22-7, the impact force is dispersed.

Therefore, when the electric vehicle collides forward, the impact force transmitted from the first cross beam 12 to the second cross beam 13 can be minimized, and the impact force finally transmitted to the occupant space can be maximally suppressed.

At this time, the seventh engraved groove 22-7 is spaced apart from the engraved groove unprocessed part 22-8 by a predetermined distance.

In more detail, the seventh engraved groove 22 - 7 may be provided in the center of the second vertical beam 22 .

On the other hand, in the intaglio groove unprocessed part 22-8, the intaglio part is not formed in each corner.

In other words, the engraved groove untreated portion 22-8 has an overall flat outer surface, and a fastening hole for bolt assembly may be provided.

Therefore, when the electric vehicle collides forward, the impact transmitted from the first transverse beam 12 to the second transverse beam 13 is a fifth engraved groove 22-5, a sixth engraved groove 22-6, It is reduced while being sequentially transmitted to the seventh intaglio groove 22-7, and finally, the impact force finally transmitted to the occupant space can be suppressed as much as possible because the intaglio groove unprocessed unit 22-8 strongly resists.

In other words, since the V-shaped engraved groove is not formed in the intaglio groove untreated unit 22-8, rigidity is secured, and ultimately, the engraved groove untreated unit 22-8 can strongly support the occupant space. safety can be guaranteed.

If described in more detail with respect to the V-shaped intaglio groove, one side is formed by being dug toward the lower side in a V shape from the upper side of the second vertical beam 22 , and the other side is V from the lower side of the second vertical beam 22 . It is formed by digging toward the upper side in a shape.

At this time, the V-shaped intaglio groove is not cut so as to be connected from the upper side to the lower side of the second vertical beam 22, and is no longer dug in the middle.

In other words, when viewed along the longitudinal direction from the side of the second vertical beam 22, the shape of the surface edge portion may form a “c” shape.

On the other hand, the first transverse beam 12 and the second transverse beam 13 according to the preferred embodiment of the present invention may be the same as each other.

On the other hand, at least one of a battery pack power distributor (PDU), a vehicle controller (VCU), a low voltage converter (LDC), and a charger (OBC) mounted on the electric vehicle is a first horizontal beam 12 and a second horizontal beam 13 ) may be fixed to at least any one of.

In other words,

A battery pack power distributor (PDU), a vehicle controller (VCU), a low voltage converter (LDC), and a charger mounted on an electric vehicle are provided in the first horizontal beam 12 and the second horizontal beam 13 having the tapped hole 105 formed therein. At least one of (OBC) may be fixed.

On the other hand, the tapped hole 105 to which at least one of a battery pack power distributor (PDU), a vehicle controller (VCU), a low voltage converter (LDC), and a charger (OBC) mounted on an electric vehicle is not fixed is deformed during a collision It may be formed for

In addition, the shape of the cross-section of the bumper beam 11, the first vertical beam 21 and the second vertical beam 22 may be a rectangular shape, and the inside may be hollow.

More preferably, the cross section of the bumper beam 11 may be square.

However, the cross-section of the first transverse beam 12 may have the following cross-sectional structure.

The cross section of the hollow tube 100 of the first transverse beam 12 to be described below is shown in a square shape, but it is a rectangle in which the upper and lower widths are longer than the left and right widths, or a rectangle in which the upper and lower widths are shorter than the left and right widths. good.

In more detail, the hollow tube 100 includes a first hollow tube outer surface portion 101 , a second hollow tube outer surface portion 102 , a third hollow tube outer surface portion 103 , and a fourth hollow tube outer surface portion 104 . and can be formed to have an elongated appearance in a rectangular shape as a whole.

The center solid part 200 is provided to be elongated along the longitudinal direction of the hollow tube 100 inside the hollow tube 100 .

The center solid portion 200 may be supported on four sides by the hollow tube rib portions 111 , 112 , 113 , and 114 extending from the inner walls of the first cross beam 12 and the second cross beam 13 .

The center solid part 200 is formed by filling the inside.

The first hollow tube rib portion 111 connects the first hollow tube outer surface portion 101 and the center solid portion 200 by the shortest distance.

The second hollow tube rib portion 112 connects the second hollow tube outer surface portion 102 and the center solid portion 200 by the shortest distance.

The third hollow tube rib portion 113 connects the third hollow tube outer surface portion 103 and the center solid portion 200 by the shortest distance.

The fourth hollow tube rib portion 114 connects the fourth hollow tube outer surface portion 104 and the center solid portion 200 by the shortest distance.

The first hollow tube rib portion 111 , the second hollow tube rib portion 112 , the third hollow tube rib portion 113 , and the fourth hollow tube rib portion 114 form the longitudinal direction of the center solid portion 200 . Therefore, it can be formed continuously.

On the other hand, the thickness of the first hollow tube rib portion 111 , the second hollow tube rib portion 112 , the third hollow tube rib portion 113 , and the fourth hollow tube rib portion 114 is the center solid portion 200 . It may be preferable to be formed smaller than the thickness of.

The tapped hole 105 shows a part tapped in the hollow tube 100 .

The tapped hole 105 may be formed in the bumper beam 11 , the first horizontal beam 12 , the second horizontal beam 13 , the first vertical beam 21 , and the second vertical beam.

In addition, the diameter of the tapped hole 105 may be preferably smaller than the width of the hollow tube rib portion (111,112,113,114), the width of the hollow tube rib portion (111,112,113,114) is preferably smaller than the maximum width of the center solid portion (200) can do.

The first hollow tube corner portion 301 is an inner corner point where the first hollow tube outer surface portion 101 and the second hollow tube outer surface portion 102 meet.

The second hollow tube corner portion 302 is an inner corner point where the second hollow tube outer surface portion 102 and the third hollow tube outer surface portion 103 meet.

The third hollow tube corner portion 303 is an inner corner point where the third hollow tube outer surface portion 103 and the fourth hollow tube outer surface portion 104 meet.

The fourth hollow tube corner portion 304 is an inner corner point where the fourth hollow tube outer surface portion 104 and the first hollow tube outer surface portion 101 meet.

On the other hand, the center solid part 200 includes a first solid part surface part 211 , a first solid part edge part 212 , a second solid part surface part 213 , a fourth solid part surface part 223 , 2 solid part edge part 222 , third solid part surface part 221 , fifth solid part surface part 231 , third solid part edge part 232 , sixth solid part surface part 233 , The seven solid part surface part 241 , the fourth solid part edge part 242 , and the eighth solid part surface part 243 may be formed.

More specifically, the first solid portion surface portion 211 extends horizontally from the point where the first hollow tube rib portion 111 meets the center solid portion 200 toward the second hollow tube outer surface portion 102 . do.

The first solid portion surface portion 211 is formed horizontally extending from the point where the first hollow tube rib portion 111 meets the center solid portion 200 toward the second hollow tube outer surface portion 102 .

The third solid portion surface portion 221 is formed horizontally extending from the point where the third hollow tube rib portion 113 meets the center solid portion 200 toward the second hollow tube outer surface portion 102 .

The fifth solid portion surface portion 231 is formed horizontally extending from the point where the third hollow tube rib portion 113 meets the center solid portion 200 toward the fourth hollow tube outer surface portion 104 .

The seventh solid portion surface portion 241 is formed horizontally extending from the point where the first hollow tube rib portion 111 meets the center solid portion 200 toward the fourth hollow tube outer surface portion 104 .

The second solid portion surface portion 213 extends vertically from the end of the first solid portion edge portion 212 toward the second hollow tube rib portion 112 and is formed to meet the second hollow tube rib portion 112 . .

The fourth solid portion surface portion 223 is formed to extend vertically from the end of the third solid portion surface portion 221 toward the second hollow tube rib portion 112 to meet the second hollow tube rib portion 112 . .

The sixth solid portion surface portion 233 is formed to extend vertically from the end of the fifth solid portion surface portion 231 toward the fourth hollow tube rib portion 114 to meet the fourth hollow tube rib portion 114 . .

The eighth solid portion surface portion 243 extends vertically from the end of the fourth solid portion edge portion 242 toward the fourth hollow tube rib portion 114 and is formed to meet the fourth hollow tube rib portion 114 . .

On the other hand, the first solid portion edge portion 212 forms a corner where the first solid portion surface portion 211 and the second solid portion surface portion 213 meet.

The second solid part edge part 222 forms a corner where the fourth solid part surface part 223 and the third solid part surface part 221 meet.

The third solid part edge part 232 forms a corner where the fifth solid part surface part 231 and the sixth solid part surface part 233 meet.

The fourth solid part edge part 242 forms a corner where the seventh solid part surface part 241 and the eighth solid part surface part 243 meet.

The height between the first hollow tube outer surface portion 101 and the third hollow tube outer surface portion 103 can be designed to be changed, and the width between the second hollow tube outer surface portion 102 and the fourth hollow tube outer surface portion 104 is Alternative designs are possible.

In addition, the length change design of the 1st solid part surface part 211, the 3rd solid part surface part 221, the 5th solid part surface part 231, and the 7th solid part surface part 241 is also possible.

In addition, the length change design of the 2nd solid part surface part 213, the 4th solid part surface part 223, the 6th solid part surface part 233, and the 8th solid part surface part 243 is also possible.

In other words, it is possible that the first hollow tube outer surface portion, the second hollow tube outer surface portion, the third hollow tube outer surface portion, and the fourth hollow tube outer surface portion all have the same length.

In addition, at least one of the first hollow tube outer surface portion, the second hollow tube outer surface portion, the third hollow tube outer surface portion, and the fourth hollow tube outer surface portion may have a length different from that of the other one.

Meanwhile, the first hollow tube rib portion 111 and the third hollow tube rib portion 113 may be positioned on the same line with each other, and the second hollow tube rib portion 112 and the fourth hollow tube rib portion 114 may be located on the same line. may also be located on the same line with each other.

The first hollow tube rib portion 111 has one end connected to the central portion of the first hollow tube outer surface portion 101 and the other end connected to the central portion of the center solid portion 200 .

The second hollow tube rib portion 112 has one end connected to the central portion of the second hollow tube outer surface portion 102 and the other end connected to the central portion of the center solid portion 200 .

The third hollow tube rib portion 113 has one end connected to the central portion of the third hollow tube outer surface portion 103 and the other end connected to the central portion of the center solid portion 200 .

The fourth hollow tube rib portion 114 has one end connected to the central portion of the fourth hollow tube outer surface portion 104 and the other end connected to the central portion of the center solid portion 200 .

On the other hand, the center of the center solid portion 200 and the second hollow tube corner portion 302 , the second solid portion edge portion 222 , the fourth solid portion edge portion 242 , and the fourth hollow tube corner portion 304 ) can be placed on the same line.

In addition, the center of the center solid portion 200 and the first hollow tube corner portion 301 , the first solid portion edge portion 212 , the third solid portion edge portion 232 and the third hollow tube corner portion 303 . can be placed on the same line.

As shown in FIG. 6, the impact force transmitted to the bumper beam 11 is first absorbed while the first vertical beam 21 is bent as described above, and then is secondarily absorbed while the first horizontal beam 12 is bent, and the second 2 The vertical beam 22 is absorbed tertiarily while being bent as described above.

At this time, as the second transverse beam 13 is also bent in the same direction as the first transverse beam 12, the impact force may be further reduced.

11: bumper beam
12: first transverse beam
13: second transverse beam
21: first vertical beam
22: second vertical beam
12-1: fastening groove
21-1: first deformation inducing member
21-2: second deformation inducing member
21-3: first engraved groove
21-4: second engraved groove
21-5: 3rd engraved groove
21-6: 4th engraved groove
22-1: third deformation inducing member
22-2: fourth deformation inducing member
22-3: fifth deformation inducing member
22-4: sixth deformation inducing member
22-5: 5th engraved groove
22-6: 6th engraved groove
22-7: 7th engraved groove
22-8: engraved groove unprocessed part
22-9: protrusion
100: hollow tube
101: first hollow tube outer surface portion
102: second hollow tube outer surface portion
103: third hollow tube outer surface portion
104: fourth hollow tube outer surface portion
105: tapped hole
106: tap processing unit
111: first hollow tube rib portion
112: second hollow tube rib portion
113: third hollow tube rib part
114: fourth hollow tube rib portion
200: center solid part
211: first solid part surface part
212: first solid part edge part
213: second solid part surface part
221: third solid part surface part
222: second solid part edge part
223: fourth solid part surface part
231: fifth solid part surface part
232: third solid part edge part
233: 6th solid part surface part
241: seventh solid part surface part
242: fourth solid part edge part
243: eighth solid part surface part
301: first hollow tube corner part
302: second hollow tube corner part
303: third hollow tube corner part
304: 4th hollow tube corner part

Claims (14)

In the front shock absorption frame for absorbing the front collision shock of the electric vehicle,
bumper beam (11);
a first transverse beam (12) connected to the rear end of the bumper beam (11) and disposed in the vehicle width direction;
a second transverse beam 13 disposed at the rear end of the first transverse beam 12;
a first vertical beam 21 connecting the bumper beam 11 and the first horizontal beam 12;
a second vertical beam (22) connecting the first horizontal beam (12) and the second horizontal beam (13);
The first vertical beam 21 and the second vertical beam 22 have a first deformation inducing part and a second deformation inducing part, respectively; characterized in that it contains,
Front shock absorbing frame for electric vehicle.
According to claim 1,
The first deformation inducing portion is characterized in that the first intaglio groove portion (21-3, 21-4, 21-5, 21-6) is formed so as to be deformed upon impact,
Front shock absorption frame for electric vehicle.
3. The method of claim 2,
The second deformation inducing portion is characterized in that the second intaglio groove portion (22-5, 22-6, 22-7) is formed so as to be deformed upon impact.
Front shock absorption frame for electric vehicle.
4. The method of claim 3,
The size of the second intaglio groove portion (22-5, 22-6, 22-7) is larger than the size of the first intaglio groove portion (21-3, 21-4, 21-5, 21-6) to do,
Front shock absorbing frame for electric vehicle.
5. The method of claim 4,
The first intaglio groove portions (21-3, 21-4, 21-5, 21-6) are characterized in that arranged at regular intervals along the first vertical beam (21),
Front shock absorbing frame for electric vehicle.
6. The method of claim 5,
The second intaglio groove portions 22-5, 22-6, 22-7 are arranged at regular intervals along the second vertical beam 22, and the second vertical beam close to the first horizontal beam 12 (22) characterized in that it is formed only up to 1/2 the length of,
Front shock absorbing frame for electric vehicle.
7. The method of claim 6,
The bumper beam 11, the first transverse beam 12, the second transverse beam 13, the first longitudinal beam 21 and the second longitudinal beam 22 have a rectangular cross section. doing,
Front shock absorbing frame for electric vehicle.
8. The method of claim 7,
The first transverse beam 12 and the second transverse beam 13, characterized in that the center solid portion 200 is formed long along the longitudinal direction,
Front shock absorption frame for electric vehicle.
9. The method of claim 8,
The center solid portion 200 is characterized in that it is supported on four sides by the hollow tube rib portions (111, 112, 113, 114) extending from the inner walls of the first cross beam (12) and the second cross beam (13),
Front shock absorbing frame for electric vehicle.
8. The method of claim 7,
The inside of the bumper beam 11, the first vertical beam 21, and the second vertical beam 22 is characterized in that it is formed as a solid,
Front shock absorbing frame for electric vehicle.
11. The method of claim 10,
The first intaglio groove portions 21-3, 21-4, 21-5, 21-6 and the second intaglio groove portions 22-5, 22-6, 22-7 are the first vertical The beam 21, characterized in that it is positioned at every vertex of the second vertical beam 22,
Front shock absorbing frame for electric vehicle.
11. The method of claim 10,
The bumper beam 11, the first horizontal beam 12, the second horizontal beam 13, the first vertical beam 21, the second vertical beam is characterized in that a tapped hole 105 is formed. to do,
Front shock absorbing frame for electric vehicle.
13. The method of claim 12,
A battery pack power distributor (PDU), a vehicle controller (VCU), a low voltage converter ( LDC), characterized in that at least one of the charger (OBC) is fixed,
Front shock absorption frame for electric vehicle. 13. The method of claim 12,
The tapped hole 105 to which at least one of a battery pack power distributor (PDU), a vehicle controller (VCU), a low voltage converter (LDC), and a charger (OBC) mounted on the electric vehicle is not fixed is formed in the event of a collision to deform characterized in that formed,
Electric vehicle front shock absorption frame

Images