CN112498286B

CN112498286B - Front support and lower support structure for protecting lower leg of pedestrian

Info

Publication number: CN112498286B
Application number: CN202011383756.0A
Authority: CN
Inventors: 徐立笑; 谭冰花; 李博
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2022-05-03
Anticipated expiration: 2040-12-01
Also published as: CN112498286A

Abstract

The invention provides a front support structure for protecting the lower leg of a pedestrian, wherein a support body comprises a vertical strip plate and a horizontal strip plate, the plate surfaces of the vertical strip plate and the horizontal strip plate are vertical, the lengths of the vertical strip plate and the horizontal strip plate extend along the width of a vehicle, the plate surfaces of the vertical strip plate and the horizontal strip plate are integrally in a flat state, mounting seats are arranged at intervals in the length direction of the support body and are connected with a front support cross beam or a front support inner side plate surface, a support plate block protruding forwards is arranged on the front plate surface of the vertical strip plate, and the support plate block is arranged at intervals in the length direction of the vertical strip plate. The mount pad is continuous with preceding beam or preceding inboard face of protecting, and the support plate on the support body is protected the lower part of inboard face one side forward and is extended for the resistance to deformation ability of preceding fender lower part increases.

Description

Front support and lower support structure for protecting lower leg of pedestrian

Technical Field

The invention relates to a support structure on the inner side of a front bumper of an automobile, in particular to a front bumper support structure beneficial to protecting the lower leg of a pedestrian.

Background

In recent years, pedestrian safety outside the vehicle has become more and more important to be emphasized in various countries, and pedestrian protection has become an important issue of concern for all vehicle manufacturers in improving passive safety, overall vehicle layout and styling. All countries such as iran, india and russia need to meet the ECER127 pedestrian protection regulations, so that vehicles can enter the sales market. Pedestrian protection is closely related to the modeling of the vehicle and the rigidity matching of the front end of the vehicle, wherein the X-direction space of a front protection skin and a front protection beam is particularly important; when the space is enough, the pedestrian protection regulation passing ability is relatively easy; but hamper the styling and welfare restrictions where insufficient space is likely to fail pedestrian protection legislation. Under the condition that the space between the anterior protection beam and the anterior protection beam is insufficient, various manufacturers take many countermeasures, such as increasing the upper support and the lower support to reduce the elongation of the knee ligament; by adding the middle energy absorbing part, the leg injury caused by overlarge bending moment of the tibia is relieved.

Disclosure of Invention

The invention aims to provide a front lower support structure which is beneficial to protecting the lower leg of a pedestrian, and the local rigidity of the front lower part of a vehicle is enhanced to reduce the extension of knee ligaments and relieve the bending moment of the lower leg.

In order to realize the purpose, the invention adopts the following scheme: the utility model provides a preceding under-support structure of shank under protection pedestrian, its characterized in that: the support body includes that the face lies in vertical, the length is along the board of erecting of car width extension and the board of the higher authority backward extension of vertical slat, and the interval arrangement mount pad links to each other with preceding guarantor crossbeam or preceding inboard face of guarantor on the length direction of support body, the preceding face of vertical slat on have convex support plate block forward, the support plate block is along the length direction interval arrangement of erecting the slat.

Among the above-mentioned scheme, the mount pad links to each other with preceding crossbeam or the preceding inboard face of guarantor, the support plate on the support body is protected the lower part of inboard face one side forward and is extended for the anti deformability of preceding guarantor lower part increases, when guaranteeing to contact with the pedestrian before, the shin bone is supported in the great range of upper and lower direction on the whole and is kept out, the shin bone hypomere and foot have been avoided being in to be thrown into in the state of unrestrainment with huge relative speed and the ground clearance department of preceding guarantor below, the effect of the huge inertia force that shin bone hypomere and foot received has been reduced remarkably.

Brief description of the drawings

Fig. 1 and 2 are schematic perspective views in front and rear directions, respectively;

FIG. 3 is a front view looking toward the vehicle head;

fig. 4 and 5 are top and bottom views of fig. 3, respectively.

Detailed Description

The utility model provides a preceding under-support structure of shank under protection pedestrian, its characterized in that: support body 10 includes that the face lies in vertical, length along the board 11 of the wide vertical bar that extends of car and the whole horizontal bar 12 that is the form of putting of the face of the last back extension of vertical bar 11, supports the length direction of body 10 and goes up interval arrangement connection mount pad 13 and protect crossbeam or preceding inboard face of protecting and link to each other, vertical bar 11's preceding face on have convex support plate 111 forward, support plate 111 along vertical bar 11's length direction interval arrangement. The shape of the supporting plate 111 may be a U-shaped cross section, which is a projection shape of the supporting plate on a plumb line perpendicular to the vehicle length direction, and can reduce weight and support.

As shown in the figure, the basic shape of the support body 10 formed by the vertical strip plates 11 and the horizontal strip plates 12 is an angle steel section structure, the corresponding part mounting seats 13 on the support body are connected with the front protection cross beam or the front protection inner side plate surface, the support plate 111 supports the inner side surface part of the front protection, once the phenomenon that a vehicle collides with a pedestrian occurs, the lower part of the front protection has good strength, the leg part of the pedestrian cannot be bent excessively, the damage of knee ligaments is relieved, and the lower leg injury caused by overlarge tibial bending moment is avoided; the invention is especially suitable for the condition that the original lower support part is not enough to effectively support, and can be used alone or combined with the original lower support part through actual conditions.

In order to ensure the reliability of connection, the two ends and the middle section of the transverse bar plate 12 are provided with connecting installation seats 13 connected with the inner side plate surface of the front protector. This allows for easy connection to the front guard.

More preferably, the support body 10 is disposed at a front section of the front fender inner panel in the vehicle width direction, and the support body 10 is disposed at a lower section of the front fender inner panel in the vertical direction. When the side portion of the vehicle contacts with a pedestrian, the relative movement direction of the side portion and the pedestrian is still larger in the vehicle length direction, the vehicle model direction is relatively smaller, and the size of the front protection side portion is relatively shorter, namely the strength of the front protection side portion is relatively higher, so that the collision position is the most serious injury area of the pedestrian at the front protection front portion position when the pedestrian and the vehicle collide, and the front portion of the support body 10 arranged on the inner side of the front protection in the vehicle width direction can play a good protection role.

In order to ensure the strength of the support body 10, reinforcing ribs 14 are arranged in a rear lower included angle region formed between the vertical batten 11 and the horizontal batten 12, and the reinforcing ribs 14 are arranged at intervals in the vehicle width direction. Furthermore, a reinforcing rib 15 is arranged between the front plate surface of the vertical batten 11 and the upper plate surface of the horizontal batten 12, and the reinforcing ribs 15 are arranged at intervals in the vehicle width direction. The reinforcing ribs 14 and the reinforcing ribs 15 are arranged, so that the strength of the support body 10 can be obviously improved, and the support effect of the support plate 111 on the front bumper can be ensured.

The mounting surface of the mounting seat 13 is provided with four connecting holes 131 which are vertically or horizontally located, and the four connecting holes 131 are symmetrically arranged at two ends and the middle section of the supporting body 10 in the length direction. This is for the convenience of connection with the front bumper, and if the connection with the front bumper beam is required, the direction of the connection hole 131 may be appropriately selected.

In specific implementation, an injection molding scheme can be selected, the vertical strip plate 11 and the horizontal strip plate 12 form an L-shaped angle steel type, the material thickness is usually set to be 2.5mm, and structural ribs are added in an auxiliary mode to enhance the front support supporting rigidity.

The technical scheme provided by the invention can effectively improve the lower leg tibia bending moment and knee ligament elongation, and ensure that a vehicle type smoothly passes the ECER127 pedestrian protection regulation in the international market; the invention has small structure volume and low requirement on space, and can be placed at a position closer to the front (in the direction of the vehicle head) as much as possible; the invention has light structure weight, and can reduce more than half weight when being used as a lower support for independent use compared with similar lower supports; when the structure of the invention is matched with the original lower support for use, the original lower support can be continuously used without re-opening the mold and considering the problems of performance assembly of the edge parts and the like.

Claims

1. The utility model provides a preceding under-support structure of shank under protection pedestrian, its characterized in that: support body (10) including the face be located vertical, length along the board wide vertical bar board (11) that extends and the whole horizontal bar board (12) that is the form of putting of the last side backward extension of vertical bar board (11), support body (10) length direction on interval arrangement connect mount pad (13) and protect crossbeam or preceding inboard face of protecting and link to each other, the preceding face of vertical bar board (11) on have convex support plate piece (111) forward, support plate piece (111) along the length direction interval arrangement of vertical bar board (11).

2. A front under support structure for protecting a pedestrian's lower leg according to claim 1, wherein: the two ends and the middle section of the horizontal strip plate (12) are provided with connecting installation seats (13) which are connected with the front protection inner side plate surface.

3. A front under support structure for protecting a pedestrian's lower leg according to claim 1 or 2, wherein: the support body (10) is arranged at the front section of the front protective inner panel in the vehicle width direction.

4. A front under support structure for protecting a pedestrian's lower leg according to claim 3, wherein: the support body (10) is arranged at a lower part of the upper and lower directions of the front protection inner side plate surface.

5. A front under support structure for protecting a pedestrian's lower leg according to claim 1 or 2, wherein: reinforcing ribs (14) are arranged in a rear lower included angle area formed between the vertical batten plates (11) and the transverse batten plates (12), and the reinforcing ribs (14) are arranged at intervals in the vehicle width direction.

6. A front under support structure for protecting a pedestrian's lower leg according to claim 5, wherein: reinforcing convex ribs (15) are arranged between the front plate surface of the vertical strip plate (11) and the upper plate surface of the horizontal strip plate (12), and the reinforcing convex ribs (15) are arranged at intervals in the vehicle width direction.

7. A front under support structure for protecting a pedestrian's lower leg according to claim 1 or 2, wherein: the mounting surface of the mounting seat (13) is provided with four connecting holes (131) with hole cores positioned in the vertical or horizontal direction, and the two ends and the middle section of each connecting hole (131) in the length direction of the support body (10) are symmetrically arranged.