KR101020487B1 - Active hinge apparatus of hood for car - Google Patents

Abstract

The present invention relates to an active hinge device of a hood for a vehicle, and more particularly, is provided in the vehicle body so as to open and close the engine room of the vehicle, and can be opened from the front in general, while the rear is heard during a collision with a pedestrian. An active hinge device for a hood for a vehicle for reducing injuries of pedestrians, comprising: a first member fixedly coupled to a vehicle body in which an engine room is located; A second member fixedly coupled to the hood; A connection member hinged to the first member so that one side can rotate about the first hinge axis, and hinged to the second member so that the other side can rotate about the second hinge axis; And when the hood is opened from the front, the second member and the connecting member are integrally coupled so that the second member and the connecting member can rotate about the first hinge shaft together, and when the hood is opened from the rear, The second member rotates about a second hinge axis, and the connection member includes a detachable fastening member that is rotatable about the first rotation axis.

Connecting member, removable fastening member, active hinge

Description

Active hinge apparatus of hood for car}

The present invention relates to an active hinge device for a hood for an automobile, and more particularly, to an active hinge device for a hood for a vehicle that enables reliable hinge driving with a simple structure.

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. 1 is a view showing a hood open state in the maintenance of a general automotive engine room, the rear of the hood panel (1) is hinged to the chassis. Therefore, the driver stands in front of the vehicle, releases the hood lock lever, and then lifts up the hood panel to perform necessary engine room maintenance.

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

In order to solve this problem, various active hinge devices have been proposed. However, the conventional active hinge device has a problem that the structure is complicated and does not work properly in an accident.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an active hinge device for a hood for an automobile that enables simple and reliable operation.

The active hinge device of the hood for a vehicle of the present invention for achieving the above object is provided in the vehicle body so as to open and close the engine room of the vehicle, it is usually possible to open from the front, when the collision with the pedestrian, the rear is lifted. In the active hinge device of the hood for cars for reducing the injuries of pedestrians,

A first member fixed to the vehicle body in which the engine room is located;

A second member fixedly coupled to the hood;

A connection member hinged to the first member so that one side can rotate about the first hinge axis, and hinged to the second member so that the other side can rotate about the second hinge axis; And

When the hood is opened from the front, the second member and the connecting member are integrally coupled so that the second member and the connecting member rotate together about the first hinge axis.

When the hood is opened from the rear, the second member rotates about a second hinge axis, and the connection member includes a detachable fastening member to rotate about the first rotation axis.

In the hinge device,

The removable fastening member,

A locking protrusion protruding from the connection member in a direction parallel to the first rotation shaft; And

It is preferable that the locking groove is provided in the second member so as to receive the locking projection detachably.

In the hinge device,

A second inlet having a smaller size than a cross section of the locking projection is formed at one side, and has a “C” shape having an inner diameter for accommodating the locking projection, and is made of a synthetic resin material and is accommodated in the second accommodation portion of the locking groove. Coupled to, but after the engaging projection inserted in one direction through the second inlet is accommodated inside the elastically deformed so as to open the second inlet when a predetermined or more force is applied in a direction opposite to the one direction of the insertion direction of the engaging projection It is preferable that a bushing is further provided to open the second inlet so that the locking projection can be moved outward.

In the hinge device, the locking projection is made of a synthetic resin material capable of elastic deformation, is detachably coupled to the second member,

The locking groove may include a first inlet having a smaller size than a cross section of the locking protrusion, and a first accommodation portion having a diameter corresponding to the locking protrusion and extending from the inlet.

When the locking projection is inserted into the locking groove, the locking projection is elastically contracted at the first inlet of the locking groove and moves in one direction toward the first accommodation portion to be seated inside the first accommodation portion. When a predetermined force or more is applied in a direction perpendicular to the direction, it is preferable that the locking projection is elastically contracted and passed through the inlet to be separated from the locking groove.

The active hinge device of the present invention having the above-described configuration has a structure that is simple in structure and capable of reliable operation, thereby reducing the overall production cost and reliably protecting the head of the pedestrian.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Figure 2 is a partial cutaway perspective view of a vehicle equipped with an active hinge device of the present invention, Figure 3 is an exploded perspective view of the active hinge device of Figure 2, Figure 4 is a side view of the combination of FIG.

The active hinge device 10 of the present invention includes a first member 20, a second member 30, a connecting member 40 and a removable fastening member 50.

The first member 20 is fixedly coupled to the vehicle body 80 in which the engine room is located. Specifically, one side of the first member 20 is fixed to the vehicle body 80, and the other side is connected to the vehicle body 80. The second hole 22, which can be hinged to the member 40, is formed, and is formed in the form of a long bar as a whole. The first member 20 is preferably made of a metal material. The first hole 21 may be fixed to the vehicle body 80 by fixing means such as a bolt.

The second member 30 is fixedly coupled to the hood 70, and specifically, the second member 30 is hinged to the first member 20 through the connection member 40. The second member 30 is formed in the form of a bar formed to extend in the same direction as the first member 20. One side is formed with a third hole 31 which can be fixedly coupled to the hood 70, the other side is formed in the locking groove 52 of the removable fastening member 50 to be described later. In addition, a fourth hole 32 through which the connecting member 40 can be hinged is formed between the third hole 31 and the locking groove 52. The second member 30 is preferably made of a metal material. The second member 30 may be coupled to the hood 70 through the third hole 31.

The connecting member 40 is hinged to the first member 20 so that one side can rotate about the first hinge shaft in which the first hinge pin 41 is inserted, and the lower side of the second hinge pin 42. The second member 30 is hinged so as to rotate about the inserted second hinge axis. Specifically, the first hinge pin 41 is inserted into one side of the connecting member 40 through the second hole 22 of the first member 20, the second hinge pin 42 is It is inserted into the other side of the connecting member 40 through the fourth hole 32 of the second member 30.

The connection member 40 is configured to connect the first member 20 and the second member 30 to each other to enable an active hinge structure of the hood 70 for a vehicle. Specifically, the connection member 40 is formed in the form of a bar, and the engaging projection 51 to be described later is formed between one side and the other side.

The removable fastening member 50 is composed of a locking protrusion 51, a locking groove 52, the bushing 53.

The detachable fastening member 50 includes a second member such that the second member 30 and the connection member 40 can rotate together with respect to the first hinge axis when the hood 70 is opened from the front. 30 and the connecting member 40 are integrally coupled, and when the hood 70 is opened from the rear, the second member 30 rotates about the second hinge axis, and the connecting member 40 is It is a configuration to enable the rotation around the first rotary shaft.

The locking protrusion 51 is provided to be coupled to the connection member 40 and protrudes with respect to the connection member 40. Specifically, the locking protrusion 51 protrudes in a direction parallel to the first hinge axis, and the locking protrusion 51 may be formed integrally with the connecting member 40, but the connecting member It is also possible to be detachably provided at 40. The locking protrusion 51 may be a metal material or various materials, but preferably made of a synthetic resin material having elasticity.

The locking groove 52 is provided in the second member 30 so as to receive the locking protrusion 51 detachably. Specifically, the locking groove 52 is recessed in a direction perpendicular to the first rotating shaft or the second rotating shaft. Home. The locking groove 52 extends from the first inlet 521 and the first inlet 521 and has a wider width than that of the first inlet 521 and has a shape corresponding to that of the locking protrusion 51. It consists of one accommodating part 522.

The bushing 53 is composed of a synthetic resin material which is generally formed in a “C” shape, and is inserted into the locking groove 52 to detachably receive the locking protrusion 51. The bushing 53 has a second inlet 531 having a size smaller than the cross-sectional area of the locking protrusion 51 so that the locking protrusion 51 can be forcibly inserted, and corresponding to the locking protrusion 51 therein. The second accommodating part 532 is formed to fix the locking protrusion 51 therein. On the other hand, the bushing 53 is accommodated in the second receiving portion 532 after the engaging projection 51 is inserted in one direction through the second inlet 531. In addition, when a force is applied in a direction opposite to the direction in which the inserted and received locking protrusion 51 is inserted, the second inlet 531 is elastically deformed so as to open so that the locking protrusion 51 escapes, and thus the locking protrusion ( 51) is allowed to escape.

On the other hand, the bushing 53 is provided with three elastic restoring holes 533 in the circumferential direction, the elastic restoring hole 533 is formed to extend in the circumferential direction in the form of a slit. The elastic restoring hole 533 acts as a buffer to allow the elastic restoring hole 533 to be narrowed to allow insertion of the locking protrusion 51 when the locking protrusion 51 is inserted, and once the locking protrusion 51 is closed. After being inserted into the bushing 53, the locking projection 51 is prevented from being pulled out while returning to the original state. Therefore, the bushing 53 is elastically contracted and expanded to restore the locking projection 51 detachably.

Reference numeral 60 denotes an actuator, which acts to suddenly inflate when a collision of a pedestrian is sensed to push up the hood 70 upward. As the actuator 60 lifts the hood 70, the locking protrusion 51 may be pulled out of the locking groove 52, and the hood 70 may be opened from the rear. Specific operation relationship will be described later.

The action of the hood 70 for the active hinge device 10 according to the preferred embodiment of the present invention is as follows.

When the hood 70 of the vehicle is normally opened from the front, as shown in FIG. 5, the second member 30 and the connecting member 40 rotate about the first hinge axis. Specifically, the second member 30 and the connecting member 40 are coupled to each other integrally while being coupled to each other by the second hinge shaft and the removable fastening member 50 to rotate about the same axis together. will be. At this time, the removable fastening member 50 is the locking projection 51 is to maintain a fixed state in the locking groove (52). On the other hand, in an accidental situation in which the pedestrian and the car collide, as shown in FIG. 6, while the actuator 60 is operated, the hood 70 is pushed upward, and the detachable fastening member 50 is separated from each other. While the connection member 40 and the second member 30 is to rotate around a different axis. Specifically, when the actuator 60 is operated, the second member 30 attempts to rotate counterclockwise around the second rotation axis, and this force is applied to the locking protrusion 51 from the locking groove 52. The locking projection 51 is released from the locking groove 52 while acting in the direction to be. In particular, the locking protrusion 51 located inside the bushing 53 of the locking groove 52 widens the second inlet 531 of the bushing 53 while elastically deforming the bushing 53 to secure the locking groove 52. A structure that can escape is made, and thus the locking protrusion 51 is released from the bushing 53 in which the second inlet 531 is sufficiently open. When the locking protrusion 51 is pulled out of the bushing 53, interconnecting the second member 30 and the connecting member 40 is a link connecting means by a second rotating shaft, the second member 30 Rotates counterclockwise about its second axis of rotation, and with this connection member 40 rotates clockwise around the first axis of rotation to allow the second member 30 to be lifted upwards. Will be done.

As the second member 30 is lifted up as described above, when the rear of the hood 70 is lifted while the front of the hood 70 is fixed to the vehicle body 80, the pedestrian hits the hood 70. It is possible to achieve the safety of pedestrians by eliminating the direct impact of the head directly on the engine in the engine room. The present invention has the following effects.

By means of a relatively simple mechanical operating structure, the active hinge device can be achieved simply, thereby reducing the overall manufacturing cost.

In addition, since both the engaging projection and the bushing are detachably installed, they can be easily replaced in case of damage by repeated operation. That is, when the hood is opened to the front or the movement of the car, a certain amount of force is applied to the removable fastening member. Such repeated fatigue loads may cause the contact between the engaging protrusion and the bushing to wear out, and such wear may be a removable fastening. Although it may cause damage to the member, in this embodiment, such a removable fastening member can be easily replaced to enable the active hinge device to operate correctly in case of emergency.

In addition, in the present embodiment, the active hinge device can be operated by a simple link structure, so that there is less risk of malfunction and less chance of malfunction.

The active hinge device of the hood for a vehicle according to the preferred embodiment of the present invention may be modified as follows.

In the embodiment of FIG. 3, the configuration in which the locking protrusion is accommodated in the bushing coupled to the inside of the locking groove is described. However, the configuration is not limited thereto, and the locking protrusion may be directly received inside the locking groove. As shown in FIG. 7, the locking protrusion 51 is made of a synthetic resin material capable of elastic deformation and maintains a detachably coupled state to the second member 30.

In addition, the locking groove 52 is formed of a first inlet 521 having a smaller size than a cross section of the locking protrusion 51 and a diameter of a diameter extending from the first opening 521 and corresponding to the locking protrusion 51. It consists of one accommodating part 522. When the locking protrusion 51 is inserted into the locking groove 52, the locking protrusion 51 passes through the first inlet 521 while elastically contracting at the inlet of the locking groove 52. After passing through the first inlet 521, the first inlet 521 may be moved in one direction toward the first accommodating part 522 to be seated on the first accommodating part 522.

On the other hand, in the case where the actuator is operated to lift the hood, when the second member 30 tries to move upward, the locking protrusion 51 is applied with a predetermined force or more in a direction perpendicular to the one direction. Accordingly, the locking protrusion 51 passes through the inlet while contracting, and thus, the locking protrusion 51 is separated from the locking groove 52, thereby releasing the coupling of the removable fastening member 50 from each other. This in turn enables the second member 30 to rotate about the second axis of rotation, and the first member 20 to be rotatable about the first axis of rotation to enable the hood to be lifted from the rear to the top. do.

The active hinge device of the present invention described above is not limited thereto, and the scope of rights may be extended as long as it can be interpreted by the claims.

1 is a view showing a hood for a vehicle according to the prior art.

Figure 2 is a partial cutaway perspective view of a vehicle equipped with an active hinge device of the present invention

3 is an exploded perspective view of the active hinge device of FIG.

4 is a side view of the combination of FIG.

5 and 6 show the operation of FIG.

Figure 7 is an exploded perspective view of the active hinge device according to another embodiment of the present invention.

<Detailed Description of Drawings>

10 ... active hinge device 20 ... first member

30 ... 2nd member 40 ... connection member

50. Detachable fastening member 51 ... Locking projection

52 ... engaging groove 53 ... bushing

60 ... actuator 70 ... hood

80 ... body

Claims (4)

In the vehicle body is provided in the vehicle body so as to open and close the engine room of the vehicle, in general, it is possible to open from the front, in the event of a collision with the pedestrian in the active hinge device of the hood for the vehicle to reduce the injury of the pedestrian, A first member fixed to the vehicle body in which the engine room is located; A second member fixedly coupled to the hood; A connection member hinged to the first member so that one side can rotate about the first hinge axis, and hinged to the second member so that the other side can rotate about the second hinge axis; And When the hood is opened from the front, the second member and the connecting member are integrally coupled so that the second member and the connecting member rotate together about the first hinge axis. When the hood is opened from the rear, the second member is rotated about the second hinge axis, and the connection member includes a removable hood for the rotatable around the first hinge axis, characterized in that the hood Active hinge device. The method of claim 1, The removable fastening member, A locking protrusion protruding from the connection member in a direction parallel to the first hinge axis; And An active hinge device for a hood for an automobile, comprising: a locking groove provided in the second member to detachably receive the locking protrusion. The method of claim 2, A second inlet having a smaller size than a cross section of the locking protrusion is formed on one side, and has a “C” shape having an inner diameter capable of accommodating the locking protrusion, and is made of a synthetic resin material and is accommodated in the locking groove and coupled thereto. After the locking projection inserted in one direction through the inlet is accommodated therein, when a predetermined or more force is applied in a direction opposite to the one direction, which is the insertion direction of the locking projection, the inlet is elastically deformed to open and the second opening is opened. An active hinge device for a hood for an automobile, characterized in that a bushing is further provided to escape to the outside. The method of claim 2, The locking projection is made of a synthetic resin material capable of elastic deformation, is detachably coupled to the second member, The locking groove may include a first inlet having a smaller size than a cross section of the locking protrusion, and a first accommodation portion having a diameter corresponding to the locking protrusion and extending from the first opening. When the locking projection is inserted into the locking groove, the locking projection is elastically contracted at the first inlet of the locking groove and moves in one direction toward the first accommodation portion to be seated inside the receiving portion and is perpendicular to the one direction to the locking projection. If a predetermined force is applied in the direction, the active hinge device of the hood for a vehicle, characterized in that the locking projection is elastically contracted, and passes through the first inlet to be separated from the locking groove.

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