KR19980061678U - Impact bar mounting structure of car door - Google Patents

Abstract

The present invention relates to the structure of the impact bar (impact bar) that is mounted inside the side door of the vehicle, in order to improve the safety of the occupant in the event of a side collision, the inner panel to form the front, rear, upper and lower edges of the door by the bent 21 is coupled to the inner surface of the outer panel with a predetermined space, the front portion of the inner panel is supported by the hinge 31 so as to be rotatable in the intermediate column 30, the impact bar ( 40, wherein both ends of the inner panel are supported by the brackets 41 mounted to the front and rear bent portions of the inner panel, wherein the first reinforcing brackets 42 are bent between the front portion and the bracket 41 of the inner panel. It is coupled to the closed cross-sectional structure, the both ends of the second reinforcing bracket 22 is flanged to the closed cross-sectional structure between the first reinforcing bracket and the inner surface of the inner panel, the load acting on both ends of the impact bar 40 This Since the first reinforcing bracket 42 and the second reinforcing bracket 22 are distributed evenly to the side and inner surface of the inner panel 21 of the door, the deformed outer panel and the impact bar 40 are prevented from invading the interior. The impact bar mounting structure of the car door.

Description

Impact bar mounting structure of car door

The present invention relates to the mounting structure of the impact bar (impact bar) mounted inside the side door of the car, improve the mounting structure so that the side door intrusion of the side door in the event of side collision effectively suppressed to improve the safety of the occupants It is.

Generally, as shown in FIGS. 1 and 2, a vehicle body having a front pillar, a center pillar 30, and a rear pillar are formed at both side surfaces of a vehicle body in which openings are formed. ) Is extended to the upper side and the upper end of each pillar is coupled with the roof rail forming the outer part of the roof, and the bottom panel of each pillar and the side sills at both ends of the floor panel It is coupled to, the front door (front door) 10 is installed in the opening formed between the front column and the intermediate column 30 so as to be opened and closed, the rear door in the opening between the rear column and the intermediate column 30 (rear door) 20 is provided by the hinge 31 so that opening and closing is possible.

The side body of the vehicle configured as described above is connected to the roof and the side body and the floor panel by the front column, the middle pillar 30 and the rear column to form a structure that withstands external forces below a certain level. On the other hand, the front door 10 and the rear door 20 is rotatably supported on the column by the hinge 31 to open and close the side opening, so that the occupant can board or get off, and also closed to the opening When the outer parts of the front door 10 and the rear door 20 are supported by the pillars and the external force is applied toward the side openings due to side collisions of the vehicle, the external body is distributed to the pillars and the vehicle body so that the vehicle body is deformed. Prevent entry into the room.

Here, in the conventional rear door 20, as shown in FIG. 2, the inner panel 21, which is bent on the inner side, is coupled to have a predetermined space, and the bent portion forms the front, rear, upper and lower edges of the door. Thus, the front part of the inner panel 21 is supported by the hinge 31 so as to be rotatable on the outer surface of the intermediate column 30 formed in the closed cross-sectional structure.

Meanwhile, the conventional rear door 20 has brackets 41 mounted to the front and rear bent portions of the inner panel 21 of the inner space, so that both ends of the impact bars 40 to absorb shocks are both brackets 41. It is fixed to).

In the conventional rear door, the impact energy is primarily absorbed by the outer panel of the door when the collision accident occurs on the side of the vehicle, and the impact energy is secondarily absorbed by the impact bar 40, thereby deforming the outer side. Suppress panels from entering the room.

However, such a conventional rear door is supported in such a manner that both ends of the impact bar 40 are simply hung over the bent portion of the inner panel 21 by the bracket 41, so that the amount of energy absorption to the actual impact load is small. When a relatively large impact is applied to the side portion there was a problem that the safety of the crew threatened.

The present invention is designed to supplement the conventional problems as described above, so as to improve the support structure of the impact bar to increase the amount of impact energy absorbed to effectively suppress the intrusion of the interior side of the door in the event of a side collision.

1 is a side view showing a side door part of a general vehicle

2 is a cross-sectional view taken along the line A-A of FIG.

Figure 3 is a cross-sectional view showing the impact bar mounting structure of the present invention car door

Explanation of symbols on the main parts of the drawings

10: front door 20: rear door

21: inner panel 22: second reinforcement bracket

30: middle pillar 31: hinge

40: impact bar 41: bracket

42: first reinforcement bracket

First, the rear door of the present invention is also shown in Figure 3, the inner panel (inner panel) 21 bent to the inner surface of the rear door 20 is coupled with a predetermined space, the bent portion is the front and rear of the door By forming the upper and lower outer portion, the front portion of the inner panel 21 is supported by the hinge 31 so as to be rotatable on the outer surface of the intermediate column 30 formed in a closed cross-sectional structure, the inner panel 21 of the inner space Brackets 41 are attached to the front and rear bent portions, and both ends of the impact bar 40 are fixed to both brackets 41.

However, in the present invention, one end of the first reinforcing bracket 42 having both ends bent outwardly with a predetermined width is fixed to the front surface of the inner panel 21 together with the hinge 31, and the first reinforcing bracket 42 The lower end of the) is coupled to form a closed end face with the bracket 41 for supporting the end of the impact bar 40, a second between the other end of the first reinforcing bracket 42 and the inner side of the inner panel (21) Both ends of the reinforcing bracket 22 is flange-coupled as a basic feature of the technical configuration.

According to the present invention, the impact energy is primarily absorbed by the outer panel of the door and the impact energy is secondarily absorbed by the impact bar 40 when a collision accident occurs at the side of the vehicle. At this time, the load applied to both ends of the impact bar 40 is evenly distributed and deformed by the first reinforcing bracket 42 and the second reinforcing bracket 22 to the inner panel 21 side and inner surface of the door and deformed The impact bar 40 is suppressed from entering the room. On the other hand, since the first reinforcing bracket 42 and the second reinforcing bracket 22 each form a closed cross-sectional structure, the structural rigidity of the entire door is improved, the external force acting on the door when the impact load is applied from the outside of the door This allows the body to be distributed to the pillars and the side vehicle body as a whole, thereby preventing the vehicle body from entering the opening.

The present invention is constructed and operated as described above, the both ends of the impact bar is supported by the reinforcing bracket brackets forming a closed cross-sectional structure, the energy absorption amount to the impact load acting on the door is increased, thereby increasing the safety of the occupant Has the effect of being enhanced.

Claims (1)

The inner panel forming the front, upper and lower outer periphery of the door by the bent portion is coupled with a predetermined space on the inner surface of the outer panel, the front portion of the inner panel is supported by the hinge to enable the rotational movement in the middle pillar, In both ends of the impact bar in the space supported by the brackets attached to the front and rear bent portion of the inner panel, the first reinforcing bracket bent between the front portion and the bracket of the inner panel is coupled in a closed cross-sectional structure And an impact bar mounting structure of an automobile door, wherein both ends of the second reinforcing bracket are flanged together in a closed cross-sectional structure between the first reinforcing bracket and the inner side surface of the inner panel.