KR20240005498A - Active Hood System - Google Patents

Abstract

The present invention relates to an active hood system, which includes an actuator that operates according to the output signal of a collision sensor; A pop-up link that is rotatably mounted on the mounting bracket about the pop-up link rotation axis and rotates about the pop-up link rotation axis according to the operation of the actuator, a short link rotatably mounted on the pop-up link, and a short link on the mounting bracket. A long link rotatably mounted, and a hood arm rotatably mounted on each of the short link and the long link, wherein when the actuator operates, the pop-up link pushes the short link to lift the hood arm. You can.

Description

Active Hood System {Active Hood System}

The present invention relates to an active hood system, and more specifically, to an active hood system that ensures operational reliability by reducing the number of parts.

The active hood system is a system that minimizes head injuries to pedestrians by raising the hood when it detects that the vehicle has collided with a pedestrian while driving, or when a collision is expected, to prevent secondary collisions between the pedestrian's head and the engine parts inside the hood.

However, the general active hood system has a multi-joint structure for the dual function of opening and closing the hood for general vehicle maintenance and lifting the hood in the event of a pedestrian collision. However, the configuration is complex and the number of parts is large, so mass production is lacking. There is.

In addition, general active hood systems have problems such as lack of operational reliability and increased weight and cost due to the multi-joint structure.

The matters described in this background art section have been prepared to enhance understanding of the background of the invention, and may include matters that are not prior art already known to those skilled in the art in the field to which this technology belongs.

The present invention provides an active hood system that can secure mass production and robustness by reducing the number of parts.

An active hood system according to an embodiment of the present invention includes an actuator that operates according to the output signal of a collision sensor; A pop-up link that is rotatably mounted on a mounting bracket about the pop-up link rotation axis and rotates about the pop-up link rotation axis according to the operation of the actuator, a short link rotatably mounted on the pop-up link, and a short link that rotates on the mounting bracket. It may include a long link rotatably mounted, and a hood arm rotatably mounted on each of the short link and the long link, and when the actuator operates, the pop-up link pushes the short link to lift the hood arm. You can raise it.

The active hood system according to an embodiment of the present invention may further include a lock lever that secures the pop-up link to the mounting bracket and releases the fixation of the pop-up link and the mounting bracket when the actuator operates.

The active hood system according to an embodiment of the present invention may further include a pop rivet that secures the lock lever and the mounting bracket and breaks when the actuator operates.

The active hood system according to an embodiment of the present invention further includes a bracket rivet mounting portion formed on the mounting bracket, and a lever rivet mounting portion formed on the lock lever, and the pop rivet connects the bracket rivet mounting portion and the lever rivet mounting portion. You can.

The active hood system according to an embodiment of the present invention further includes a release pin rotatably connecting the pop-up link and the short link, and the lock lever may include a release pin fixing part for fixing the release pin. .

The release pin fixing part may include a fixing part long arm that pushes the release pin when the actuator operates, and a fixing part short arm that fixes the release pin and releases the fixation of the release pin when the actuator operates. .

The active hood system according to an embodiment of the present invention may further include a lock lever pin that rotatably couples the lock lever and the mounting bracket.

The actuator may be mounted on the vehicle body or the mounting bracket.

The pop-up link may include a pop-up plate formed at a position corresponding to the mounting position of the actuator.

The pop-up link may include a pop-up link stopper configured to push the short link when the actuator operates.

The short link may include a protruding short link stopper to limit rotation of the hood arm.

The active hood system according to an embodiment of the present invention may further include a short link pin rotatably connecting the short link and the hood arm.

The active hood system according to an embodiment of the present invention may further include an adjust bolt mounted on the mounting bracket to support the short link.

The active hood system according to an embodiment of the present invention further includes a long link hood arm pin that rotatably connects the long link and the hood arm, and a long link mounting pin that rotatably connects the long link and the mounting bracket. It can be included.

The actuator may include a built-in micro gas generator to operate according to the output signal of the collision sensor.

According to the active hood system according to an embodiment of the present invention, mass production can be improved and product robustness can be secured by reducing the number of parts.

In addition, according to the active hood system according to an embodiment of the present invention, cost and weight can be reduced and product reliability can be improved by reducing the number of parts.

In addition, effects that can be obtained or expected due to embodiments of the present invention will be disclosed directly or implicitly in the detailed description of the embodiments of the present invention. That is, various effects expected according to embodiments of the present invention will be disclosed in the detailed description to be described later.

Since these drawings are for reference in explaining exemplary embodiments of the present invention, the technical idea of the present invention should not be interpreted as limited to the attached drawings.
Figure 1 is a side view of an active hood system according to an embodiment of the present invention, showing the hood in a closed state.
Figure 2 is a side view of an active hood system according to an embodiment of the present invention, showing a general hood open operation state.
Figure 3 is a partial perspective view of the active hood system according to an embodiment of the present invention as seen from one direction, showing the hood in a closed state.
Figure 4 is a partial perspective view of the active hood system according to an embodiment of the present invention as seen from another direction, showing the hood in a closed state.
Figure 5 is a cross-sectional view taken along line V-V in Figure 4.
Figure 6 is a diagram showing a state before operation of an actuator that can be applied to an active hood system according to an embodiment of the present invention.
Figure 7 is a diagram showing the initial operating state of an actuator that can be applied to an active hood system according to an embodiment of the present invention.
Figure 8 is a partial perspective view of the active hood system according to an embodiment of the present invention as seen from another direction, and is a diagram showing the initial operating state of an actuator that can be applied to the active hood system according to an embodiment of the present invention.
Figure 9 is a diagram showing a mid-operation state of an actuator that can be applied to an active hood system according to an embodiment of the present invention.
Figure 10 is a partial perspective view of the active hood system according to an embodiment of the present invention as seen from another direction, and is a diagram showing the mid-operation state of an actuator that can be applied to the active hood system according to an embodiment of the present invention.
Figure 11 is a partial perspective view seen from one direction of the active hood system according to an embodiment of the present invention, and is a diagram showing the end-operation state of an actuator that can be applied to the active hood system according to an embodiment of the present invention.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention, parts that are not relevant to the description are omitted, and identical or similar components are assigned the same reference numerals throughout the specification.

The size and thickness of each component shown in the drawings are shown arbitrarily for convenience of explanation, so the present invention is not necessarily limited to what is shown in the drawings, and the thickness is enlarged to clearly express various parts and areas.

In addition, in the detailed description below, the names of the components are divided into first, second, etc. to distinguish them as the components are the same, and the order is not necessarily limited in the description below.

Throughout the specification, when it is said that a part includes a certain element, this does not mean excluding other elements, but may further include other elements, unless specifically stated to the contrary.

In addition, terms such as ... part, ... means, etc. described in the specification mean a comprehensive unit of structure that performs at least one function or operation.

When a part, such as a layer, membrane, region, or plate, is said to be "on" another part, this includes not only being directly above the other part, but also having another part in between.

Conversely, when a part is said to be “right on top” of another part, it means that there is no other part in between.

As used herein, “vehicle,” “vehicle,” “vehicle,” “vehicle,” or other similar terms refer to sports utility vehicles (SUV), buses, trucks, passenger vehicles, including various commercial vehicles, and various types of vehicles. Includes ships, including boats and ships, automobiles, including aircraft and the like, and includes hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-fueled vehicles, and other alternative fuels (e.g., fuels obtained from sources other than petroleum). fuel), including vehicles.

Additionally, some methods may be executed by at least one controller. The term controller refers to a hardware device that includes memory and a processor configured to execute one or more steps interpreted as algorithmic structures.

Hereinafter, a preferred embodiment of the present invention will be described in detail based on the attached drawings.

Figures 1 and 2 are side views of an active hood system according to an embodiment of the present invention.

Figure 3 is a partial perspective view of the active hood system according to an embodiment of the present invention as seen from one direction, and Figure 4 is a partial perspective view of the active hood system according to an embodiment of the present invention as seen from another direction.

Figures 1, 3 and 4 show the hood closed.

The active hood system according to an embodiment of the present invention includes an actuator 20 that operates according to the output signal of the collision sensor 12.

The collision sensor 12 may be an impact detection sensor, an image sensor, or a light detection and ranging (LiDAR) sensor that detects the impact of a pedestrian, and the controller 10 responds to the output signal of the collision sensor 12. Accordingly, the operation of the actuator 20 is controlled by detecting a collision with a pedestrian or determining whether a collision is expected.

The actuator 20 may include a built-in micro gas generator (22) to operate according to the output signal of the collision sensor 12, but is not limited thereto, and may be operated by physical or electrical operation as described later. It may include various types of devices that drive the active hood system according to an embodiment of the present invention by protruding the actuator rod 24.

The active hood system according to an embodiment of the present invention includes a mounting bracket 30, which is rotatably mounted on the mounting bracket 30 about a pop-up link rotation axis 42, and operates according to the operation of the actuator 20. A pop-up link 40 rotating about the pop-up link rotation axis 42, a short link 50 rotatably mounted on the pop-up link 40, and a long link rotatably mounted on the mounting bracket 30. (60), and a hood arm 70 rotatably mounted on the short link 50 and the long link 60, respectively.

A hood 75 (hood or bonnet) is mounted on the hood arm 70, and a gas lift ball joint 112 coupled with a gas lift, not shown, may be mounted on the hood arm 70.

The mounting bracket 30 is fixed to the car body 1 and supports the pop-up link 40, the short link 50, and the long link 60.

The actuator 20 may be mounted on the mounting bracket 30 using the actuator mounting bracket 120 and the actuator mounting pin 122.

However, it is not limited to what is shown in the drawing, and the actuator 20 may be directly fixed to the vehicle body 1. For example, it may be mounted on the vehicle body 1 through bolts or a separate actuator bracket.

The active hood system according to an embodiment of the present invention may further include an adjust bolt 34 mounted on the mounting bracket 30 to support the short link 50.

The adjust bolt 34 is rotatably mounted on the mounting bracket 30, and for example, the amount of protrusion can be adjusted depending on the degree of rotational coupling to support the short link 50.

The active hood system according to an embodiment of the present invention fixes the pop-up link 40 to the mounting bracket 30, and when the actuator 20 operates, the pop-up link 40 and the mounting bracket 30 It may further include a lock lever 80 for releasing the fixation.

The active hood system according to an embodiment of the present invention may further include a pop rivet 100 that secures the lock lever 80 and the mounting bracket 30 and is broken when the actuator 20 operates. For example, the pop rivet 100 may be made of soft metal or plastic, and when the actuator 20 operates to push the pop-up link 40, the pop rivet 100 is broken, Unfasten the pop-up link 40 and the mounting bracket 30. Then, the pop-up link 40 can rotate based on the pop-up link rotation axis 42 and push the short link 50.

The active hood system according to an embodiment of the present invention further includes a bracket rivet mounting portion 32 formed on the mounting bracket 30, and a lever rivet mounting portion 82 formed on the lock lever 80, and the pop The rivet 100 may connect the bracket rivet mounting portion 32 and the lever rivet mounting portion 82. That is, the pop rivet 100 can fix the lock lever 80 by connecting the bracket rivet mounting part 32 and the lever rivet mounting part 82 before the actuator 20 operates.

Figure 5 is a cross-sectional view taken along line V-V in Figure 4.

3 to 5, the active hood system according to an embodiment of the present invention further includes a release pin 48 rotatably connecting the pop-up link 40 and the short link 50, The lock lever 80 may include a release pin fixing part 84 that secures the release pin 48. That is, the release pin 48 rotatably connecting the pop-up link 40 and the short link 50 is fixed by the release pin fixing part 84 of the lock lever 80 to operate the actuator 20. ) is activated, the pop-up link 40 remains fixed, and the short link 50 can rotate around the release pin 48.

The release pin fixing part 84 fixes the fixing part long arm 86 that pushes the release pin 48 when the actuator 20 operates, and the release pin 48, and the actuator 20 It may include a fixed short arm 88 that releases the fixation of the release pin 48 when operated. The operation of the release pin fixing part 84 will be described later.

The active hood system according to an embodiment of the present invention may further include a lock lever pin 90 that rotatably couples the lock lever 80 and the mounting bracket 30. When the pop rivet 100 is broken, the lock lever 80 may rotate around the lock lever pin 90.

The active hood system according to an embodiment of the present invention may further include a release pin washer 92 disposed between the release pin fixing part 84 and the release pin 48. The release pin washer 92 serves as a kind of bush and fixes the release pin 48 before the actuator 20 operates, and when the actuator 20 operates, the lock lever 80 and the Ensure that the release pin (48) can be easily removed.

The pop-up link 40 may include a pop-up plate 44 formed at a position corresponding to the mounting position of the actuator 20. When the actuator rod 24 protrudes, the actuator rod 24 may push the pop-up plate 44 to rotate the pop-up link 40.

The pop-up link 40 may include a pop-up link stopper 46 formed to push the short link 50 when the actuator 20 operates. Before the actuator 20 operates, the pop-up link stopper 46 is located in a position separate from the short link 50, and when the actuator 20 operates, the pop-up link stopper 46 is positioned at the short link 50. The hood 75 is lifted by pushing the link 50.

The short link 50 may include a protruding short link stopper 52 to limit rotation of the hood arm 70. During a general opening and closing operation of the hood 75, the short link stopper 52 contacts the hood arm 70 to limit the opening amount of the hood 75.

The active hood system according to an embodiment of the present invention may further include a short link pin 54 that rotatably connects the short link 50 and the hood arm 70. The hood arm 70 can rotate around the short link pin 54.

The active hood system according to an embodiment of the present invention includes a long link hood arm pin 62 that rotatably connects the long link 60 and the hood arm 70, and the long link 60 and the mounting bracket. It may further include a long link mounting pin 64 that rotatably connects (30).

The long link 60 is rotatably mounted around the long link mounting pin 64, and the hood arm 70 is rotatably mounted around the long link hood arm pin 62.

1 and 2 show the hood 75 of the active hood system according to an embodiment of the present invention in a closed state and an open state, respectively. Here, the closed state and open state mean general opening and closing of the hood 75 without the actuator 20 operating. That is, Figures 1 and 2 show the user opening and closing the hood 75 for maintenance of the engine room, etc.

When the user opens the hood 75, the short link 50 rotates around the release pin 48, and the long link 60 rotates around the long link mounting pin 64. The hood 75 is opened as shown in Figure 2. The short link stopper 52 contacts the hood arm 70 to limit the opening amount of the hood 75.

When opening and closing the hood 75 in general, the active hood system according to an embodiment of the present invention opens and closes forming a four-section link structure. That is, the mounting bracket 30, the short link 50, the hood arm 70, and the long link 60 form a four-link structure. At this time, the release pin 48, the short link pin 54, the long link hood arm pin 62, and the long link mounting pin 64 function as joints that rotatably connect the four link structures. I do it.

Figure 6 is a diagram showing a state before operation of an actuator that can be applied to an active hood system according to an embodiment of the present invention.

As shown in Figure 6, the actuator 20 does not operate before a pedestrian collides with the front of the vehicle or when a collision is not expected.

Figure 7 is a diagram showing the initial operating state of an actuator that can be applied to an active hood system according to an embodiment of the present invention, and Figure 8 is a partial perspective view of the active hood system according to an embodiment of the present invention viewed from another direction. This is a diagram showing the initial operating state of an actuator that can be applied to an active hood system according to an embodiment of the invention.

Referring to FIGS. 3, 7, and 8, when a pedestrian collides in front of the vehicle or a collision is expected, the controller 10 controls the actuator 20 according to the output signal of the collision sensor 12. Outputs an operating signal. Then, the micro gas generator 22 operates to protrude the actuator rod 24 and push the pop-up plate 44.

Figure 9 is a diagram showing the mid-operation state of an actuator that can be applied to the active hood system according to an embodiment of the present invention, and Figure 10 is a partial perspective view of the active hood system according to an embodiment of the present invention viewed from another direction. This is a diagram showing the mid-operation state of an actuator that can be applied to an active hood system according to an embodiment of the invention.

The pop rivet 100 is broken by the force of the actuator rod 24 pushing the pop-up plate 44, and the connection between the bracket rivet mounting portion 32 and the lever rivet mounting portion 82 is disconnected.

In addition, the pop-up link 40 and the lock lever 80 push the short link 50 through the release pin 48 by the force of the actuator rod 24 pushing the pop-up plate 44. do.

That is, the pop-up link 40 maintains rotation based on the pop-up link rotation axis 42, and the lock lever 80 rotates around the lock lever pin 90 and the fixed long arm ( 86) pushes the release pin 48.

Figure 9 is a diagram showing the mid-operation state of an actuator that can be applied to the active hood system according to an embodiment of the present invention, and Figure 10 is a partial perspective view of the active hood system according to an embodiment of the present invention viewed from another direction. This is a diagram showing the mid-operation state of an actuator that can be applied to an active hood system according to an embodiment of the invention.

The pop-up link 40 maintains rotation based on the pop-up link rotation axis 42, and the fixed short arm 88 of the lock lever 80 rotates around the lock lever pin 90. This is separated from the release pin 48.

Figure 11 is a partial perspective view seen from one direction of the active hood system according to an embodiment of the present invention, and is a diagram showing the end-operation state of an actuator that can be applied to the active hood system according to an embodiment of the present invention.

Referring to FIG. 11, the pop-up link 40 rotates based on the pop-up link rotation axis 42 so that the pop-up link stopper 46 contacts the short link 50, and the short link 50 Push to lift the hood arm 70.

That is, the hood 75 mounted on the hood arm 70 is lifted to prevent a secondary collision in which a pedestrian colliding with a vehicle collides with the vehicle's engine, etc., thereby minimizing pedestrian head injuries.

As shown in Figure 9, during emergency operation of the active hood system according to an embodiment of the present invention, it operates through a five-bar link structure.

That is, in an emergency situation, the mounting bracket 30, the pop-up link 40, the short link 50, the hood arm 70, and the long link 60 form a five-link structure. At this time, the pop-up link rotation axis 42, the release pin 48, the short link pin 54, the long link hood arm pin 62, and the long link mounting pin 64 have a five-link structure. It functions as a rotatable joint.

As described above, according to the active hood system according to an embodiment of the present invention, mass production can be improved and product robustness can be secured by reducing the number of parts.

That is, according to the active hood system according to an embodiment of the present invention, it can operate through a four-link structure when opening and closing the general hood, and can operate through a five-link structure in an emergency situation of a pedestrian collision, so its operation and structure are simple. can do.

In addition, according to the active hood system according to an embodiment of the present invention, cost and weight can be reduced and product reliability can be improved by reducing the number of parts.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and can be easily modified by a person skilled in the art from the embodiments of the present invention to provide equivalent equivalents. Includes all changes within the scope deemed acceptable.

1: Body 10: Controller
12: collision sensor 20: actuator
22: Micro gas generator 24: Actuator rod
30: Mounting bracket 32: Bracket rivet mounting portion
34: Adjust bolt 40: Pop-up link
42: Pop-up link rotation axis 44: Pop-up plate
46: Pop-up link stopper 48: Release pin
50: Short link 52: Short link stopper
54: short link pin 60: long link
62: Long link hood arm pin 64: Long link mounting pin
70: hood arm 75: hood
80: Lock lever 82: Lever rivet mounting part
84: Release pin fixing part 86: Fixing part long arm
88: Fixed part short arm 90: Lock lever pin
92: Release pin washer 100: Pop rivet
112: gas lift ball joint 120: actuator mounting bracket
122: Actuator mounting pin

Claims (15)

An actuator that operates according to the output signal of the collision sensor;
a pop-up link rotatably mounted on a mounting bracket about the pop-up link rotation axis and rotating about the pop-up link rotation axis in response to operation of the actuator;
A short link rotatably mounted on the pop-up link;
a long link rotatably mounted on the mounting bracket; and
Hood arms rotatably mounted on the short link and the long link, respectively;
Including,
An active hood system wherein when the actuator operates, the pop-up link pushes the short link to lift the hood arm. In paragraph 1:
a lock lever that secures the pop-up link to the mounting bracket and releases the pop-up link and the mounting bracket when the actuator operates;
An active hood system further comprising: In paragraph 2,
a pop rivet that secures the lock lever and the mounting bracket and breaks when the actuator operates;
An active hood system further comprising: In paragraph 3,
A bracket rivet mounting portion formed on the mounting bracket; and
A lever rivet mounting portion formed on the lock lever;
Including more,
The pop rivet is an active hood system that connects the bracket rivet mounting portion and the lever rivet mounting portion. In paragraph 3,
a release pin rotatably connecting the pop-up link and the short link;
It further includes,
The lock lever is
a release pin fixing part that secures the release pin;
Active hood system including. In paragraph 5,
The release pin fixing part
a fixed long arm that pushes the release pin when the actuator operates; and
a fixed short arm that fixes the release pin and releases the release pin when the actuator operates;
Active hood system including. In paragraph 5,
a lock lever pin rotatably coupling the lock lever and the mounting bracket;
An active hood system further comprising: In paragraph 1:
The actuator is an active hood system mounted on the vehicle body or the mounting bracket. In paragraph 1:
The pop-up link above is
a pop-up plate formed at a position corresponding to the mounting position of the actuator;
Active hood system including. In paragraph 1:
The pop-up link above is
a pop-up link stopper formed to push the short link when the actuator operates;
Active hood system including. In paragraph 1:
The short link above is
a short link stopper protruding to limit rotation of the hood arm;
Active hood system including. In paragraph 1:
a short link pin rotatably connecting the short link and the hood arm;
An active hood system further comprising: In paragraph 1:
an adjust bolt mounted on the mounting bracket to support the short link;
An active hood system further comprising: In paragraph 1:
a long link hood arm pin rotatably connecting the long link and the hood arm; and
a long link mounting pin rotatably connecting the long link and the mounting bracket;
An active hood system further comprising: In paragraph 1:
The actuator is
a built-in micro gas generator to operate according to the output signal of the collision sensor;
Active hood system including.

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