KR100726165B1 - Active hood hinge device for vehicle - Google Patents

Abstract

The present invention is the hood opening for the engine room maintenance is made from the front, in the case of a collision accident during the vehicle driving is opened in the rear of the hood so that the pedestrian's head can absorb the impact energy generated when the collision with the hood both front and rear A hinge device for an active hood that can be opened in the vehicle, which is provided in the vehicle body to cover the engine room of the vehicle, and is normally openable in the front, but in the event of a collision with a pedestrian, the rear end is lifted and the head of the pedestrian is injured. An active hood device for reducing teeth, comprising: a first link (110) hinged to a vehicle body in which an engine room is located; A second link 120 hinged to an end of the first link 110; The hinge 130 is hinged to the end of the second link 120, the bracket 130 is fixed to the lower surface of the hood, the hinge portion of the first link 110 and the second link 120 and the first The two links 120 and the hinge portion of the bracket 130 are provided with restraining members 150 and 160 for restricting free rotation at a predetermined torque or less, so that the hood is opened in front of the vehicle during normal maintenance. It is easy, and when the collision with the pedestrian is an invention that has the effect of buffering the impact of the pedestrian while opening and closing the hood rearward.

Active Hood, First Link, Second Link, Bracket, Fixing Pin, Pedestrian, Head Injury.

Description

Active hood hinge device for vehicle

1 is a view showing a hood open state of a typical vehicle,

2 is a view showing an operation example of a vehicle equipped with an active hood;

3 is a view showing a hinge device for an active hood of the present invention,

4 is an exploded perspective view of a hinge device for an active hood of the present invention;

5 and 6 are examples of the operation of the hinge device for an active hood of the present invention

    Showing drawings.

<Explanation of symbols for the main parts of the drawings>

110: first link 111: first hinge ball

112: second hinge ball 120: second link

121: second hinge ball 122: hinge protrusion

123: stopper 130: bracket

140: hinge pin 150, 160: fixed pin

The present invention relates to a hinge device for an active hood of a vehicle, in particular, the hood opening for the engine room maintenance is made from the front, in the event of a crash while driving the vehicle is opened from the rear of the hood when the head of the pedestrian collides with the hood It relates to a hinge device for an active hood that can be opened in both front and rear to absorb the impact energy generated in the.

In general, when maintenance of the engine room of the vehicle is required, necessary maintenance is performed after opening the hood in front of the vehicle.

That is, FIG. 1 is a view illustrating a hood opening state in general vehicle engine room maintenance, and the rear end (part A) of the hood panel 1 is hinged to the vehicle body. Therefore, the driver stands in front of the vehicle to release the hood lock lever and then lifts up the hood panel 1 to perform necessary engine room maintenance.

On the other hand, if a collision accident with a pedestrian occurs while driving a vehicle, the pedestrian often falls on the hood panel of the vehicle due to the impact, and in particular, a head injury of the pedestrian collides with the hood panel.

In order to solve this problem, various techniques for reducing injuries caused by the pedestrian falling on the hood during a frontal collision with the pedestrian have been proposed.

As shown in FIG. 2, as shown in FIG. 2, when the vehicle collides with the pedestrian, the front side of the hood panel 1 becomes a hinge portion (B portion), and the hood panel 1 opens to the rear, and thus, An active hood has been proposed that can absorb shocks in a collision.

That is, a sensor is mounted in the vehicle to detect a collision of a pedestrian, and an actuator operates to open the hood panel 1 rearward by the signal of the sensor, and at this time, the hinge part or the impact between the hood panel and the vehicle body is impacted. A damper or a cushioning material capable of absorbing the shock absorber may be provided to cushion a pedestrian's shock that collides with the hood panel 1.

However, in order to buffer the collision of the pedestrians by actively operating the hood panel according to the collision of the pedestrians, the hood panel must be opened rearward. On the other hand, however, it is easy to maintain that the hood can be opened from the front during maintenance of the engine room of a typical vehicle.

In other words, the hood can be opened from the front in consideration of the ease of maintenance of a normal engine room, and the hood must be able to be opened rearward in order to cushion the impact by actively interlocking the hood when colliding with a pedestrian. .

However, in this case, since the position of the hinge portion in accordance with the opening direction of the hood is different, it is difficult to satisfy these conditions only with the conventional hood hinge structure.

The present invention is to solve the above shortcomings, the hood opening for the engine room maintenance is made from the front, in the event of a collision during the vehicle can be opened rearward to prevent the shock of the pedestrian to cover the hood in both front and rear To provide a hinge device for an active hood that can be opened.

The hinge device for an active hood of the present invention is provided in the vehicle body to cover the engine room of the vehicle, and is normally openable from the front, but active to reduce the head injury of the pedestrian while hearing the rear end when the pedestrian collides with it. A hood device comprising: a first link hinged to a vehicle body in which an engine room is located; A second link hinged to an end of the first link; The hinge is fastened to the end of the second link, the bracket is fixed to the lower surface of the hood, the hinge portion of the first link and the second link, the hinge portion of the second link and the bracket is less than a certain torque Is achieved as a restraining member regulating free rotation.

3 to 6 is a view showing a hinge device for an active hood of the present invention, Figure 3 is a view showing a hinge device for an active hood of the present invention, Figure 4 is an exploded perspective view of the hinge device for an active hood of the present invention. 5 and 6 are views showing an operation example of the hinge device for an active hood of the present invention.

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 3, the hinge device for an active hood of the present invention is generally positioned at the rear end of the hood panel 1, and has a first link 110 fixed to a vehicle body in an engine room and a lower surface of the hood panel 1. The bracket 130 is fixed to, and the first link 110 and the second link 120 is hinged to both ends of the bracket.

A first hinge hole 111 is formed at one end of the first link 110, and the first link 110 is hinged to a vehicle body in the engine room by the first hinge hole 111. In addition, a second hinge hole 112 is formed at one end of the first link 110.

A third hinge hole 121 is formed at one end of the second link 120, and a hinge protrusion 122 is formed at the other end of the second link 120.

A stopper 123 bent in the assembly direction with the first link 110 may be formed in the second link 120, and the stopper 123 may rotate the first link 110 and the second link 120. When the stopper 123 is caught by the first link 110 to limit the maximum rotation angle between the first link and the second link.

The bracket 130 has a bolt fastening hole 131 which is bolted to the bottom surface of the hood panel, and includes a bent hinge portion 132. A fourth hinge hole 133 is formed in the hinge portion 132, and the hinge protrusion 122 of the fourth hinge hole 133 and the second link 120 is assembled to allow the second link and the bracket to rotate. Do.

The hinge pin 140 is assembled to the first hinge hole 111 of the first link 110 and the third hinge hole 121 of the second link 120 to hinge-assemble the first link and the second link.

Meanwhile, although the first link 110 and the second link 120 are hinge-assembled by the hinge pin 140 on the drawing, the first link and the first link and the bracket are hinge-assembled, as shown. It is apparent that the hinge hole is formed on one of the two links and the hinge protrusion is formed on the other side so that the hinge can be assembled to each other.

In the link structure of the hinge device of the present invention, the hinge portion of the second link 120 and the bracket 130 together with the hinge portion of the first link 110 and the second link 120 freely rotates below a certain torque. It is characterized by the technical feature that the restraining member is configured to regulate.

That is, the first link 110 has a first pin hole 112a formed in the second hinge hole 112 hinged to the second link 120, and also the second link 120 and the hinge pin 140. The second pin hole 121a and the third pin hole 140a are formed to correspond to the first pin hole 112a, respectively. The fixing pin 150 is inserted into and fixed to the first, second and third pin holes 112a, 121a and 140a.

Similarly, a fourth pin hole 122a is formed in the hinge protrusion 122 of the second link 120, and a fourth pin hole also in the fourth hinge hole 133 of the bracket 130 hinged to the hinge protrusion 122. A fifth pin hole 133a may be formed to correspond to the 122a. The fixing pin 160 is inserted into and fixed to the fourth pin hole 122a and the fifth pin hole 133a.

As such, the fixing pins 150 and 160 inserted into the hinge portion between the links and the bracket restrict the free rotation of the hinge portion, but when a predetermined or more torque acts on the link, the fixing pins 150 and 160 are fixed. The pin hole is detached from the pinhole and subsequently freely rotated by the link or the bracket.

On the other hand, each hinge portion may be further provided with a washer coupled to the fixing pin to prevent the separation of the fixing pin.

An operation example of the hinge device for an active hood of the present invention configured as described above will be described.

The hinge device for the active hood of the present invention is located substantially behind the hood panel and fixed to the hood panel and the vehicle body (see FIG. 3).

On the other hand, when the hood panel needs to be opened for maintenance of the engine room, the hood is opened by lifting the hood panel upward after releasing the hood lock lever in front of the vehicle.

Referring to FIG. 5, in the hinge device, the first hinge hole 111 of the first link 110 becomes a hinge axis to open the hood panel, and also the first link 110 and the second link 120. And the hinge portions of the bracket 130 are fixed by the fixing pins 150 and 160, and thus the first and second links 110 and 120 and the bracket 130 are integrally formed.

Next, an example of the operation of the hinge device in a collision with a pedestrian while driving a vehicle will be described with reference to FIG. 6.

First, when a collision with a pedestrian is detected through a sensor or the like while driving a vehicle, the active hood operating mode is activated by the control unit, and the actuator is not shown in the arrow F direction. Forces above the magnitude are applied.

Accordingly, the first and second links 110 and 120 and the fixing pins 150 and 160 which are fixed to the hinge portions of the brackets 130 are cut or separated from the pinholes by the operation of the actuator. The first and second links 110 and 120 and the bracket 130 are rotatable with each other and the rear of the hood panel is opened. In this case, the stopper 123 of the second link 120 is caught by the first link 110 to limit the maximum rotation angle between the first link 110 and the second link 120.

In the hinge device for the active hood operation, the fixing pin of the hinge portion which acts as a restraining force so that the first and second links and the bracket are integrally operated can be set for the size of the restraining force by adjusting its material or diameter.

The hinge device for the active hood of the present invention as described above can be opened from the front in the case of engine room maintenance, etc., the hinge can be opened from the rear to perform the active hood function in the event of a collision with a pedestrian. By providing a structure, since the hood is normally opened in front of the vehicle, vehicle maintenance is easy, and when the collision with the pedestrian is an invention that the effect of buffering the impact of the pedestrian while the hood is opened rearward.

Claims (3)

In the active body is provided on the vehicle body to cover the engine room of the vehicle, it is usually possible to open from the front, in the event of a collision with the pedestrian, the rear end is heard while reducing the head injury of the pedestrian, A first link hinged to a vehicle body in which the engine room is located; A second link hinged to an end of the first link; Is hinged to the end of the second link, consisting of a bracket fixed to the lower surface of the hood, The hinge portion of the first link and the second link, and the hinge portion of the second link and the bracket is provided with a hinge member for restricting free rotation at a predetermined torque or less. 2. The hinge device of claim 1, wherein the restraining member is a fixing pin inserted into the freely rotatable hinge portion to interrupt the rotation of the hinge portion. The hinge device for an active hood of claim 2, wherein the hinge portion further includes a washer for preventing separation of the pin.

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