KR101154318B1 - Hood latch assembly for vehicle - Google Patents

Abstract

The present invention relates to a hood latch assembly for a vehicle for improving a pedestrian protection performance in a vehicle collision, in the hood latch assembly for a vehicle for pedestrian protection,
A main latch 110 for first locking and unlocking the hood shaft H1; A safety hook 140 configured to secondly lock the hood shaft H1 when the primary lock is released by the main latch 110 to pop up, and to be rotatably assembled to penetrate through the second rotation shaft 143; An open lever 130 rotatably coupled to a lever coupling part 141 extending from one side of the safety hook 140 about a first rotation shaft 131; The first locking by the main latch 110 is released and at the same time returns to a position where interference occurs with the open lever 130, the open lever 130 can be opened by operating the hood around the first rotating shaft 131. Auxiliary latch 120 for rotating to the right position; configured to include, avoiding the secondary collision between the open lever 130 and the pedestrian when the hood is closed, and the open lever 130 when the hood is opened a second It provides a hood latch assembly for a vehicle, characterized in that to rotate the reference to the rotation shaft 143 to unlock the hood shaft (H1).

Description

HOOD LATCH ASSEMBLY FOR VEHICLE}

The present invention relates to a vehicle hood latch assembly for pedestrian protection, and more particularly to a vehicle hood latch assembly for improving the pedestrian protection performance in the event of a vehicle crash.

In general, the vehicle is equipped with an engine hood that opens and closes the upper part of the engine room, and the engine hood is installed to be open at any time for maintenance of various components installed in the engine room or general daily inspection. Accordingly, one side of the engine hood is hingedly connected to the vehicle body, and the other side is mounted to the hood latch assembly, which is a locking device of the engine hood, so as to be selectively opened.

Typically, the hood latch assembly is a locking and unlocking means for the hood opening and closing operation, it is composed of a secondary locking structure to prevent the opening of the engine hood and to keep the closed safely when the hood is required to be closed, such as during normal driving. Located under the front end of the hood, it is installed on the side of the vehicle body and functions to hold or release the hood shaft mounted on the inner panel of the hood.

For example, in the locked state of the hood, the latch of the hood latch assembly bites the hood shaft. When the latch is released by the operator's operation and the hood shaft is released, the latch is released. However, the hood shaft is opened by the safety lever of the open lever. It will lock and you will not be able to open the hood completely.

Therefore, the driver must push the open lever in the predetermined direction to fully open the hood.

1 is a view illustrating an analysis of pedestrian protection performance when a vehicle and a pedestrian collide with a conventional vehicle hood latch assembly is installed, and FIG. 2 is a view illustrating an analysis of pedestrian protection performance according to a mounting position of a conventional vehicle hood latch assembly. to be.

As shown in FIG. 1, when the vehicle collides with the pedestrian, the lower body of the pedestrian hits the upper leg region of the hood H, and may be hit.

However, in the conventional vehicle hood latch assembly, the open lever (or safety hook knob) 11 always protrudes and extends toward the upper leg region of the hood, whether the hood H is open or closed. The first pedestrian hitting the vehicle collides with the open lever 11 in the upper leg region of the hood of the vehicle, causing secondary injury.

In general, when the vehicle collides with the pedestrian, the secondary collision with the conventional open lever 11 occurs as shown in FIG. 2, regardless of the mounting position of the hood latch assembly 10.

In addition, due to the open lever 11 operating structure of the hood latch assembly 10 for vehicles as described above, in which the open lever 11 extends toward the tip side of the hood H, the pedestrian protection performance of the vehicle is deteriorated, resulting in crash performance. There is a falling problem.

The present invention has been invented to solve the above problems, the open lever is configured to change the position according to the opening and closing of the hood, when the hood is closed when the hood is closed, such as during normal driving or in the lateral position outside the pedestrian collision area The purpose of the present invention is to provide a hood latch assembly for a vehicle for pedestrian protection that allows the opening lever to be returned to its longitudinal position when the hood is opened, thereby enabling the opening operation of the hood through the open lever.

In order to achieve the above object, the present invention provides a vehicle hood latch assembly for pedestrian protection,

A main latch for first locking and unlocking the hood shaft; A safety hook configured to secondly lock the hood shaft to pop up when the primary lock is released by the main latch and to be rotatably assembled to penetrate a second rotation shaft; An open lever rotatably coupled around a first rotation shaft to a lever coupling part extending from one side of the safety hook; And an auxiliary latch for rotating the open lever to a fixed position capable of opening the hood about the first rotational axis while being returned to a position where interference with the open lever is generated while releasing the primary lock by the main latch. The hood latch assembly for the vehicle, characterized in that to prevent the secondary collision between the open lever and the pedestrian when the hood is closed, and to unlock the hood shaft by rotating the open lever relative to the second rotation axis when the hood is opened. To provide.

The present invention prevents the secondary collision of the pedestrian by the open lever for hood opening operation in the impact area of the hood during the vehicle collision, so that the injury caused by the secondary collision with the open lever does not occur when the vehicle and the pedestrian collide. As a result, the vehicle's pedestrian protection performance can be increased and collision performance merchandise can be secured.

FIG. 1 is a diagram illustrating an analysis of pedestrian protection performance when a vehicle and a pedestrian collide with a hood latch assembly for a vehicle.
2 is a view showing the analysis of the pedestrian protection performance according to the mounting position of the conventional vehicle hood latch assembly.
3 and 4 are respectively a front perspective view and a rear perspective view of the hood latch assembly for a vehicle according to the present invention, wherein the main latch is unlocked, and the open lever is rotated to the longitudinal position by the auxiliary latch. to be.
5A and 5B are rear and front views respectively illustrating a hood latch assembly for a vehicle according to the present invention when the hood is closed, showing a state in which the hood shaft is double locked by the main latch and the safety hook.
Figure 6a is a partial perspective view showing that the open lever is moved to the longitudinal position when the auxiliary latch is rotated by the interference between the auxiliary latch and the open lever in the vehicle hood latch assembly according to the present invention.
6B is a front view illustrating that the auxiliary latch is rotated and returned while the main latch is unlocked in the vehicle hood latch assembly according to the present invention.
Figure 6c is a plan view showing that the open lever is moved to the longitudinal position because the auxiliary latch is rotated back in the vehicle hood latch assembly according to the present invention.
FIG. 7 is a perspective view illustrating a process of releasing a hood shaft from a safety hook by rotating an open lever positioned in a longitudinal position in a vehicle hood latch assembly according to the present invention about a second rotating shaft.
8 is a view showing that it is easy to prepare a shock absorbing space in the engine room when the pedestrian and the vehicle collide due to the change of the position of the open lever according to the present invention.

The present invention relates to a hood latch assembly for a vehicle for improving the pedestrian protection performance of the impact performance of the vehicle, when the hood is closed by pressing the hood latch (H1) when the auxiliary latch 120 is rotated when the hood pops back By rotating the open lever 130 positioned in the direction to move to the home position by interference, the open lever 130 is out of the secondary collision area between the pedestrian and the open lever when the hood is closed, and the hood when the hood pops up. Allow the opening operation to be located in the longitudinal direction possible.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The hood latch assembly for a vehicle according to the present invention is mounted on a mounting bracket 160 fixed to a vehicle body to perform locking and unlocking of the hood shaft H1, and the mounting bracket 160 includes a hood latch assembly. Be prepared with the proper structure.

First, the main rotating shaft 111 for mounting the main latch 110 to perform the primary locking and unlocking of the hood shaft H1 is assembled and fixed to the front side of the mounting bracket 160.

As shown in FIG. 3, the main latch 110 rotatably assembled to penetrate the main rotating shaft 111 disposed on the right side of the mounting bracket 160 has one side of the hood shaft H1 lowered while the hood is closed. It catches and locks to prevent accidental opening of the hood.

Then, the side of the main shaft 111, that is, the left side of the mounting bracket 160, the auxiliary shaft 120 for mounting the auxiliary latch 120 is assembled and fixed.

The auxiliary latch 120 that is rotatably assembled to penetrate the auxiliary rotation shaft 121 also catches one side of the hood shaft H1 that descends while the hood is closed, but opens the hood like the main latch 110. There is no function to prevent it.

In detail, the main latch 110 may operate an operation for releasing the hood shaft H1 through a release handle in a vehicle interior. While the hood shaft H1 can be held by the hood shaft H1 to unlock the auxiliary latch 120, the auxiliary latch 120 is lowered by the descending hood shaft H1 while the hood shaft H1 is lowered. When the position is changed to the holding structure and the release handle unlocks the main latch 110 in one step to unlock the hood shaft H1, the hood is rotated counterclockwise by the hood shaft H1, which is moved up and down, and the hood shaft ( Releases H1).

That is, the auxiliary latch 120 structurally catches one side of the hood shaft H1 when the hood shaft H1 is lowered, but does not have a fixing force capable of maintaining the locked state of the hood shaft H1. When the hood shaft H1 is moved upward, it is released without blocking it.

Accordingly, when the first stage is unlocked by the release handle in the vehicle interior, the hood latch H1 pops up by the main latch 110 and the auxiliary latch 120 rotates in the counterclockwise direction. As shown in FIG. 6A, the upper end portion of 120 rotates the open lever 130 from the lateral position to the longitudinal position as shown in FIG. 6C through interference with the open lever 130.

In addition, in order to smoothly rotate the open lever 130 due to the interference, the locking step 125 is formed at a position that comes into contact with the open lever 130 of the upper end of the auxiliary latch 120.

Then, since the interference between the return latch 120 and the open lever 130 is increased by the locking step 125, when the auxiliary latch 120 rotates counterclockwise and returns, the open lever 130 Rotates to the longitudinal position, where it is pressed.

In addition, the present invention is to be used to return the auxiliary latch 120 in the counterclockwise direction by configuring the return spring, that is, the auxiliary return member 123 mounted through the auxiliary rotation shaft 121.

In the embodiment of the present invention, the auxiliary return member 123 is one end is connected to the auxiliary latch 120 and the other end is connected to the mounting bracket 160, rotated in the clockwise direction by the hood shaft (H1) is lowered It is possible to return the secondary latch 120 moved.

When the main latch 110 is released by releasing the first stage of the release handle to release the hood shaft H1, a return spring for rotating the main latch 110 in a clockwise direction, that is, the main return member ( 113 is mounted through the main rotating shaft 111.

In the embodiment of the present invention, the main return member 113 has one end connected to the main latch 110 and the other end connected to the mounting bracket 160 to enable the return of the main latch 110.

In addition, both ends of the main rotating shaft 111 and the auxiliary rotating shaft 121 penetrates and is mounted to the rigid member 150.

The rigid member 150 serves to reinforce the rigidity of the mounting bracket 160 and to prevent the hood from opening when the hood is forcibly opened without unlocking the main latch 110.

In addition, the operating force is connected via a cable and the release handle of the driver's seat for controlling the unlocking operation of the main latch 110 to provide a fixing force for maintaining the primary lock of the hood shaft (H1) to the main latch (110). The transmission means 115 is configured on the mounting bracket 160.

The operation force transmission means 115 is holding the main latch 110 so that the lock shaft (H1) can be held, and when the driver unlocks the first stage with the release handle, the main latch 110 is moved to the main latch 110. It is released to rotate clockwise by the return member 113 and is returned by the return spring 117.

In the hood latch assembly according to the present invention, the configuration as described above is arranged on the front portion of the mounting bracket 160 as shown in Figure 3, the configuration described below is configured to the rear portion of the mounting bracket 160 as shown in FIG. .

As shown in FIG. 4, in the hood latch assembly according to the present invention, a second rotation shaft 143 for rotatably mounting the safety hook 140 for performing secondary locking and unlocking of the hood shaft H1 is provided. The mounting bracket 160 is vertically fixed to the rear side of the mounting bracket, and the safety hook 140 penetrates through the second rotation shaft 143 to be rotatably assembled.

As shown in Figure 5a, the safety hook 140 is formed in the shape of a bar bent in a 'b' shape when viewed from the front, the upper end of the hook shape for the secondary locking of the hood shaft (H1) It is formed, the right end of the lower end is composed of a lever engaging portion 141 for coupling with the open lever 130 is rotated by the interference of the auxiliary latch.

The lever fastening portion 141 is formed integrally extending from the lower right side of the safety hook 140, and is formed to have a cross-section of a 'c' shape in which the open lever 130 may be inserted.

In addition, a first rotation shaft 131 is mounted to penetrate the lever coupling portion 141 into which the open lever 130 is inserted, from top to bottom, and to couple the open lever 130 to the lever coupling portion 141.

As described above, the open lever 130 is rotated by the secondary latch 120 is rotated counterclockwise to rotate, thereby rotating as it moves from the horizontal position to the longitudinal position as shown in FIG.

In addition, a return spring for returning the open lever 130 (rotational movement from the longitudinal position to the transverse position), that is, the first return member 133 penetrates through the first rotation shaft 131 and the lever coupling portion ( 141) is mounted to rest on.

One end of the first return member 133 is connected to the open lever 130 and the other end thereof is connected to the lever fastening portion 141 to enable the return of the open lever 130.

The other end of the return spring, that is, the second return member 145, one end of which is connected to the mounting bracket 160 is connected to the right side of the lower end of the safety hook 140.

Accordingly, the second return member 145 serves to return the safety hook 140 rotated by the hood opening operation of the open lever 130.

Hereinafter, the operating state of the embodiment according to the present invention.

As shown in Figures 5a-7, the present invention shows the position change of the open lever 130 for the opening operation of the hood.

When the hood is closed, as shown in FIG. 5A, the open lever 130 is positioned in the transverse direction by the spring force of the first return member 133 and maintains the state thereof, and the hood shaft H1 is shown in FIG. 5B. As the double latch by the main latch 110 and the safety hook 140 to maintain the hood closed state.

Accordingly, when the vehicle and the pedestrian collide while driving, the open lever 130 is not located in the collision area (hit area) in the engine room, thereby preventing secondary collision by the open lever 130 and performing the performance condition during the pedestrian protection hit test. Satisfied.

In the present invention, the open lever 130 is located in the lateral direction, as shown in Figs. 5a and 6a, located in the horizontal direction parallel to the safety hook 140, 2 of the pedestrian in the collision area in the engine room under the hood. It means you are in a position to avoid car collision.

And, the open lever 130 is located in the longitudinal direction, as shown in Figure 6c, by rotating about 90 ° with respect to the first rotating shaft 131 is located vertically perpendicular to the safety hook 140, the hood It means that it is located in the right position where the opening operation is possible.

When the hood is required to open, when the driver unlocks the first stage with the release handle in the vehicle interior, the hood shaft H1 and the hood are released as shown in FIG. 6B while the hood shaft H1 is unlocked by the main latch 110. Is popped up, and at the same time, the main latch 110 is rotated in a clockwise direction by the main return member 113, and the auxiliary latch 120 is released by the hood shaft H1 while the auxiliary return member is released. The spring force of 123 rotates counterclockwise.

As the auxiliary latch 120 is returned by the spring force, the auxiliary lever 120 causes interference with the open lever 130, and by the interference, the open lever 130 is rotated in the clockwise direction from the transverse position to the longitudinal position. In this case, the open lever 130 may open the hood.

In this case, the hood shaft H1 is in a popped state caught by the hook portion of the safety hook 140.

Next, as shown in FIG. 7, when the open lever 130 positioned at the longitudinal position is rotated counterclockwise about the second rotation shaft 143, the safety hook 140 rotates together and the hood shaft is rotated. (H1) will be fully unlocked and the hood will be fully open.

As such, the hood latch assembly for a vehicle according to the present invention configures the open lever 130 for the opening operation of the hood as a position change type, and the open lever 130 in the pedestrian striking area of the engine room in the hood closed state as shown in FIG. 8. By moving to the transverse position to enable the avoidance of the impact, it is easy to provide a shock absorbing space between the vehicle and the pedestrian, thereby satisfying the pedestrian protection performance during the pedestrian protection hit test.

For example, the secondary collision of the pedestrian by the open lever 130 of the hood latch assembly is prevented in the upper leg region of the hood during vehicle collision, so that the injury caused by the secondary collision with the open lever 130 when the vehicle and the pedestrian collide. Is not generated, thus increasing the pedestrian protection performance of the vehicle and ensuring the crash performance merchandise.

And, since the position of the open lever 130 is changed in accordance with the opening and closing of the hood, the freedom of design of the hood latch assembly is increased, and it is possible to install at the front of the engine room, thereby reducing the cost.

While the invention has been shown and described with respect to certain preferred embodiments, the invention is not limited to these embodiments, and those of ordinary skill in the art to which the invention pertains within the scope of the claims. It includes all embodiments of various forms that can be practiced.

110: Jurassic
111: main axis of rotation
113: main return member
115: operating force transmission means
120: auxiliary latch
121: auxiliary rotation shaft
123: auxiliary return member
125: jamming jaw
130: open lever
131: first rotating shaft
133: first return member
140: safety hook
141: lever fastening part
143: second rotating shaft
145: second return member
150: rigid member
160: mounting bracket

Claims (4)

delete delete In the vehicle hood latch assembly for pedestrian protection,
A main latch 110 for first locking and unlocking the hood shaft H1;
A safety hook 140 configured to secondly lock the hood shaft H1 when the primary lock is released by the main latch 110 to pop up, and to be rotatably assembled to penetrate through the second rotation shaft 143;
An open lever 130 rotatably coupled to a lever coupling part 141 extending from one side of the safety hook 140 about a first rotation shaft 131;
The first locking by the main latch 110 is released and at the same time returns to a position where interference occurs with the open lever 130, the open lever 130 can be opened by operating the hood around the first rotating shaft 131. Auxiliary latch 120 for rotating to the right position;
It is configured to include, to avoid the secondary collision between the open lever 130 and the pedestrian when the hood is closed, when the hood is opened by rotating the open lever 130 with respect to the second rotary shaft 143 by the hood shaft ( To unlock H1),
Vehicle latch assembly for the vehicle, characterized in that the auxiliary return member 123 for returning the auxiliary latch 120 to the position where the interference with the open lever 130 is configured.
In the vehicle hood latch assembly for pedestrian protection,
A main latch 110 for first locking and unlocking the hood shaft H1;
A safety hook 140 configured to secondly lock the hood shaft H1 when the primary lock is released by the main latch 110 to pop up, and to be rotatably assembled to penetrate through the second rotation shaft 143;
An open lever 130 rotatably coupled to a lever coupling part 141 extending from one side of the safety hook 140 about a first rotation shaft 131;
The first locking by the main latch 110 is released and at the same time returns to a position where interference occurs with the open lever 130, the open lever 130 can be opened by operating the hood around the first rotating shaft 131. Auxiliary latch 120 for rotating to the right position;
It is configured to include, to avoid the secondary collision between the open lever 130 and the pedestrian when the hood is closed, when the hood is opened by rotating the open lever 130 with respect to the second rotary shaft 143 by the hood shaft ( To unlock H1),
Vehicle hood, characterized in that formed on the upper end of the secondary latch 120, the engaging jaw 125 to increase the interference between the open lever 130 and the secondary latch 120 to rotate while pushing the open lever 130. Latch assembly.

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