JP4108020B2 - Vehicle hood structure - Google Patents

Description

  The present invention relates to a structure of a hood provided at a front portion of a vehicle body in a vehicle such as a passenger car, a commercial vehicle, a truck, or a bus.

  In a vehicle, for example, as disclosed in Patent Document 1, when a traveling vehicle collides with an obstacle, the rear portion of the hood is forcibly lifted to lower the hood when the obstacle gets on the hood. There is one configured to absorb the impact while securing the deformable amount (see FIGS. 1 and 8 of Patent Document 1).

  According to the structure of Patent Document 1, a first link member (in FIG. 2 of Patent Document 1) facing forward and swingable up and down around the horizontal axis (36 in FIG. 2 of Patent Document 1) of the fixed portion of the vehicle body. 37), and a second link member (in FIG. 2 of Patent Document 1) facing backward and swingable up and down around the horizontal axis (40 in FIG. 2 of Patent Document 1) of the first link member. 42), and the end of the second link member can swing around the horizontal axis (47 in FIG. 2 of Patent Document 1) on the back surface of the rear portion of the hood (21 in FIG. 2 of Patent Document 1). Connected to. A connecting member (50 in FIG. 2 of Patent Document 1) for connecting the first and second link members to the fixed portion of the vehicle body is provided, and the rear portion of the hood is forcibly forced along with a collision with an obstacle of the vehicle. Lifting means for lifting (24 in FIGS. 6 and 8 of Patent Document 1) is provided.

Accordingly, the hood can be opened and closed around the horizontal axis (47 in FIG. 5 of Patent Document 1) on the back surface of the rear portion of the hood during the stop.
Next, when the traveling vehicle collides with an obstacle, the connecting member (50 in FIG. 2 of Patent Document 1) is damaged or detached when the rear portion of the hood is forcibly lifted by the lifting means. Thus, the first and second link members swing upward and the rear portion of the hood is forcibly lifted (see FIGS. 7 and 8 of Patent Document 1).

Japanese Patent Laid-Open No. 2001-18843 (FIGS. 1, 2, 5, 7, and 8)

According to the structure of Patent Document 1, in order to configure the hood so that it can be freely opened and closed, and to configure the rear part of the hood to be forcibly lifted, the first and second link members (in FIG. 2 of Patent Document 1) 37, 42), there is room for improvement in terms of simplification of the structure.
An object of the present invention is to simply configure a structure in a hood structure of a vehicle that allows the hood to be opened and closed and the rear portion of the hood to be forcibly lifted.

(Constitution)
The first feature of the present invention resides in the following configuration in a vehicle hood structure.
In food and fenders provided at a front portion of the vehicle body, comprising a pivotably forward link members vertically to the first horizontal axis around the fender, the second lateral end portion of the link member of the rear part of the hood rear surface It is swingably connected around the axis. A first blocking unit that prevents the link member from swinging around the second horizontal axis in a direction approaching the rear surface of the rear portion of the hood; and the link member is separated from the rear surface of the rear portion of the hood about the second horizontal axis. A hood or a link member is provided with a second blocking portion that blocks the state of swinging in the direction, and the strength of the second blocking portion is set to be lower than the strength of the first blocking portion.
It comprises lifting means lifting the rear portion of the full over de forces with the collision with the obstacle of the vehicle.
In a state in which no operation of the lifting means, with the link member by the first and second blocking portion is fixed to the hood, by link member swings to the first horizontal axis around freely open and close off over de Configure.
Due to the operation of the lifting means, the second blocking portion is broken, the link member swings upward around the first horizontal axis, and the link member swings around the second horizontal axis in the direction away from the rear surface of the rear portion of the hood. And configured to force the rear of the hood to be lifted.

(Function)
[I]
According to the first feature of the present invention, the first blocking portion that prevents the link member from swinging around the second horizontal axis in the direction of approaching the rear surface of the rear portion of the hood, and the link member is the second horizontal axis. A second blocking portion for blocking the state of swinging in the direction away from the rear surface of the rear portion of the hood is provided in the hood or the link member, and the link member is fixed to the hood by the first and second blocking portions. It is in a state.
As a result, the link member is swung up and down around the first horizontal axis during the stop (when the lifting means is not activated) (the link member is fixed to the hood by the first and second blocking portions). The hood can be opened and closed.

Next, when the traveling vehicle collides with an obstacle, if the rear portion of the hood is forced to be lifted by the operation of the lifting means, the second blocking portion is broken and the link member is moved around the first horizontal axis. While swinging upward, the link member swings around the second horizontal axis, moves away from the rear surface of the rear portion of the hood, and the rear portion of the hood is forcibly lifted.
As described above, according to the first feature of the present invention, a structure that allows the hood to be opened and closed and the rear portion of the hood to be forcibly lifted can be obtained by the link member. There is no need to provide such first and second link members.

[II]
In a vehicle, for example, as shown in FIG. 4, in many cases, when the hood 1 is opened, the link member 4 is stopped and the opening operation of the hood 1 is stopped. In the state shown in FIG. 4, there is a case where the hood 1 is further opened by mistake (the hood 1 is pushed backward).
In the state as described above, a state in which a large load is applied to the first blocking portion 5b that blocks the link member 4 from swinging around the second horizontal axis P2 in the direction of approaching the rear surface of the rear portion of the hood 1. Thus, the second blocking portion 6 that prevents the link member 4 from swinging around the second horizontal axis P2 in the direction away from the back surface of the rear portion of the hood 1 is not so heavily loaded.

On the other hand, when the traveling vehicle collides with an obstacle, for example, as shown in FIG. 3, if the rear portion of the hood 1 is forcibly lifted by the operation of the lifting means 7, the link member 4 is The first blocking portion 5b that blocks the state of swinging in the direction of approaching the rear surface of the rear portion of the hood 1 around the horizontal axis P2 is not loaded so much, and the link member 4 is connected to the second horizontal axis. A large load is applied to the second blocking portion 6 that blocks the state of swinging in the direction away from the rear surface of the rear portion of the hood 1 around P2. As a result, the second blocking portion 6 is damaged, and the link member 4 swings upward about the first horizontal axis P1 while the link member 4 swings about the second horizontal axis P2 and the hood 1 The rear part of the hood 1 is forcibly lifted away from the rear surface of the rear part.

[III]
By taking into account the two types of states as described in [II] above, the first feature of the present invention sets the strength of the second blocking portion to be lower than the strength of the first blocking portion ( The strength of the first blocking portion is set higher than that of the second blocking portion).
As a result, according to the first feature of the present invention, for example, as shown in FIG. 4, after the opening operation of the hood 1 is stopped, the hood 1 is erroneously opened further (the hood 1 is pushed backward). For example, as shown in FIG. 3, the rear portion of the hood 1 is forcibly lifted by the lifting means 7 while setting the strength of the first blocking portion 5b to be sufficient. Thus, the strength of the second blocking portion 6 can be set to a relatively low value so that the second blocking portion 6 can be broken without any trouble and the rear portion of the hood 1 can be forcibly lifted (this). In other words, even if the lifting force of the lifting means 7 is not set to be unnecessarily large, the second blocking portion 6 can be broken without any trouble and the rear portion of the hood 1 can be forcibly lifted. ).

(The invention's effect)
According to the first feature of the present invention, in the hood structure of a vehicle, a structure in which the hood can be opened and closed and the rear portion of the hood is forcibly lifted can be obtained by the link member. There is no need to provide the first and second link members as in the structure, which is advantageous in terms of simplification of the structure.

  According to the first feature of the present invention, by setting the strength of the first blocking portion and the strength of the second blocking portion separately and appropriately, the hood opening operation is stopped, and then the hood is further opened by mistake. It is now possible to respond appropriately to both the state of trying to operate (pushing the hood backward) and the state where the rear part of the hood is forcibly lifted by the lifting means. The function of the hood structure of the vehicle could be enhanced.

(Constitution)
The second feature of the present invention resides in the following configuration in the first feature of the present invention.
The front of the hood Ru with a connection and releasable locking mechanism of the vehicle body fixing portion.
Due to the operation of the lifting means, the second blocking portion is broken, the link member swings upward around the first horizontal axis, and the link member swings around the second horizontal axis in the direction away from the rear surface of the rear portion of the hood. The locking mechanism is configured to move and allow the hood to move backward as the rear of the hood is forcibly lifted.

(Function)

When the traveling vehicle collides with an obstacle as described in [I] above and the rear portion of the hood is forcibly lifted by the operation of the lifting means, for example, as shown in FIGS. 4 swings around the second horizontal axis P2 in a direction away from the rear surface of the rear part of the hood 1, while the link member 4 swings upward around the first horizontal axis P1, and the rear part of the hood 1 is While trying to move backward and upward while drawing an arc trajectory around one horizontal axis P1, the entire hood 1 tries to move backward.

  According to the second feature of the present invention, when the front portion of the hood is provided with a lock mechanism that can be connected to and disconnected from the fixed portion of the vehicle body, the lock mechanism is configured to allow the hood to move backward. Therefore, as described above, when the link member swings upward around the first horizontal axis and the rear portion of the hood attempts to move upward while drawing an arc locus around the first horizontal axis, the lock mechanism The rearward movement of the hood is allowed. Thus, according to the second feature of the present invention, the link member swings upward around the first horizontal axis without disturbing the rearward movement of the hood by the lock mechanism, and the rear portion of the hood is It moves backward and upward without hindrance while drawing an arc locus around the horizontal axis.

(The invention's effect)

  According to the second feature of the present invention, when the front part of the hood is provided with a lock mechanism that can be connected to and disconnected from the fixed part of the vehicle body, the lock mechanism is configured to allow the hood to move backward. The link member swings upward around the first horizontal axis so that the rear part of the hood moves rearward and upward without hindrance while drawing an arc trajectory around the first horizontal axis. The function of the structure that can be forcibly lifted could be enhanced.

FIG. 1 shows a two-box type five-door type passenger car, and a hood 1 is provided at the front of the vehicle body. As shown in FIGS. 1, 2, and 5, a metal bracket 3 is fixed to the right and left fenders 2 at the front of the vehicle body, and a stopper 3 a is integrally provided on the bracket 3. A metal link member 4 is provided around the first horizontal axis P1 of the bracket 3 so as to be swingable up and down, and the link member 4 extends forward. A metal hinge member 5 is fixed to the right and left sides of the rear surface of the rear portion of the hood 1, and the end of the link member 4 is swingably connected around the second horizontal axis P <b> 2 of the hinge member 5.

  As shown in FIGS. 2 and 5, the arm portion 5 a is integrally extended rearward from the hinge member 5, and a bent portion 5 b (first blocking portion) is integrally formed laterally at the upper edge portion of the arm portion 5 a. Is formed. As shown in FIGS. 2, 5, and 6, a connecting member 6 (second blocking portion) made of synthetic resin having a J-shaped cross section is provided, and the connecting member 6 is attached to the attachment hole 5 c of the hinge member 5. The connecting member 6 holds the lower edge portions of both the link member 4 and the arm portion 5a of the hinge member 5 from below.

As a result, as shown in FIGS. 2, 5, and 6, the link member 4 is fixed to the hinge member 5 by the bent portion 5b and the connection member 6 of the hinge member 5 (the link member 4 is the second horizontal axis P2). The state in which the link member 4 swings in the direction of approaching the rear surface of the rear portion of the hood 1 around the second horizontal axis P2 is prevented by the bent portion 5b of the hinge member 5. A state where the connecting member 6 prevents the link member 4 from swinging in the direction away from the back surface of the rear portion of the hood 1 around the second horizontal axis P2.
In this case, the strength of the connecting member 6 is set to be lower than the strength of the bent portion 5b of the hinge member 5 (the strength of the bent portion 5b of the hinge member 5 is higher than the strength of the connecting member 6). Is set).

As shown in FIGS. 1 and 2, an actuator 7 (corresponding to a lifting means) is provided at a position below the hinge member 5 in the right and left fenders 2. The actuator 7 includes an igniter (not shown), an enhancer (not shown), and a gas generating agent (not shown) inside, and the piston portion 7a rapidly protrudes upward by the gas generated explosively. It is configured as follows. As shown in FIG. 1, a lock mechanism 8 is provided which can freely connect and disconnect the front portion of the hood 1 to the front portion, and the lock mechanism 8 allows the hood 1 to move backward in the connected state. It is configured. A collision sensor 9 for detecting that the vehicle body has collided with an obstacle is provided at the front portion (front bumper portion) of the vehicle body.

  The solid line in FIG. 1 and the state shown in FIG. 2 are states in which the hood 1 is closed, and the lock mechanism 8 is operated in the connected state. The lock mechanism 8 is configured to allow the rearward movement of the hood 1 in the connected state, but the link member 4 is connected across the bracket 3 and the hinge member 5 as shown in FIG. The hood 1 does not move backward.

  As shown in FIGS. 2 and 4, when the vehicle is stopped, the lock mechanism 8 is operated to release the connection, and the front portion of the hood 1 is lifted (the link member 4 is swung upward around the first horizontal axis P <b> 1). Open the hood 1 and operate. In this case, the link member 4 is fixed to the hinge member 5 by the bent portion 5b of the hinge member 5 and the connection member 6 (the link member 4 cannot swing around the second horizontal axis P2). Therefore, the hood 1 (link member 4) can be opened and closed around the first horizontal axis P1 without hindrance.

  As shown in FIG. 4, when the hood 1 is opened, the link member 4 comes into contact with the stopper portion 3 a of the bracket 3 so that the opening operation of the hood 1 is stopped. As shown in FIG. 4, after the link member 4 contacts the stopper portion 3a of the bracket 3, when the hood 1 is erroneously opened further (when the hood 1 is pushed backward), the link member 4 On the other hand, the hood 1 and the hinge member 5 try to swing around the second horizontal axis P2 in the clockwise direction in FIG. 4, but the bent portion 5b of the hinge member 5 is pressed against the upper edge portion of the link member 4. In this state, the opening operation of the hood 1 is stopped.

  As shown in the two-dot chain line of FIG. 1 and FIG. 3, when the traveling vehicle collides with an obstacle (the hood 1 is closed and the lock mechanism 8 is connected), the collision sensor 9 With this detection signal, the piston portion 7a of the actuator 7 rapidly protrudes upward and pushes up the hinge member 5 upward. When the hinge member 5 is pushed upward in this way, the connection member 6 is moved upward together with the hinge member 5, the connection member 6 is pressed against the lower edge portion of the link member 4, and the connection member 6 is It breaks or comes off. When the connecting member 6 is broken or detached, the link member 4 swings around the first horizontal axis P1 while the link member 4 swings around the second horizontal axis P2 in a direction away from the rear surface of the rear portion of the hood 1. Swings upward.

  In this case, as shown in the two-dot chain line of FIG. 1 and FIG. 3, the rear portion (second horizontal axis P2) of the hood 1 tries to move rearward and upward while drawing an arc trajectory around the first horizontal axis P1. To do. Since the lock mechanism 8 is configured to allow the rearward movement of the hood 1 in the connected state, the rear part of the hood 1 moves rearward and upward while the front part of the hood 1 moves rearward. Thus, the rear portion of the hood 1 can be lifted without hindrance.

[First Alternative Embodiment of the Invention]
Instead of the structure shown in FIG. 5 and FIG. 6 of the above-mentioned [Best Mode for Carrying Out the Invention], a structure as shown in FIG.
As shown in FIG. 7A, a bent portion 4a (first blocking portion) is integrally formed in the lateral direction at the lower edge portion of the link member 4. A connecting member 6 (second blocking portion) made of synthetic resin having a J-shaped cross section is provided, the connecting member 6 is mounted in the mounting hole 4b of the link member 4, and the arm portion of the link member 4 and the hinge member 5 The connection member 6 holds the upper edge portions of both 5a from above.

As a result, as shown in FIG. 7 (a), the link member 4 is fixed to the hinge member 5 by the bent portion 4a and the connection member 6 of the link member 4 (the link member 4 is around the second horizontal axis P2). The state in which the link member 4 swings around the second horizontal axis P2 in a direction approaching the rear surface of the rear portion of the hood 1 is prevented by the bent portion 4a of the link member 4. A state in which the connecting member 6 prevents the link member 4 from swinging in the direction away from the rear surface of the rear portion of the hood 1 around the second horizontal axis P2.
In this case, the strength of the connecting member 6 is set to be lower than the strength of the bent portion 4a of the link member 4 (the strength of the bent portion 4a of the link member 4 is higher than the strength of the connecting member 6). Is set).

[Second Embodiment of the Invention]
Instead of the structure shown in FIG. 5 and FIG. 6 in the above-mentioned [Best Mode for Carrying Out the Invention] and the structure shown in FIG. 7 (A) in [First Another Embodiment of the Invention], FIG. ) As shown in FIG.
As shown in FIG. 7 (b), a bent portion 5b (first blocking portion) is integrally formed laterally on the upper edge portion of the arm portion 5a of the hinge member 5, and the lower edge of the arm portion 5a of the hinge member 5 is formed. A bent portion 5e (second blocking portion) is integrally formed in the portion in the lateral direction, and a notch portion 5d is formed in the bent portion 5e of the hinge member 5. As a result, the upper and lower edge portions of the link member 4 are held by the bent portions 5b and 5e of the hinge member 5 from above and below, and the connection as shown in FIG. 6 and FIG. Member 6 is not used

As a result, as shown in FIG. 7B, the link member 4 is fixed to the hinge member 5 by the bent portions 5b and 5e of the hinge member 5 (the link member 4 is swung around the second horizontal axis P2). (The state in which the link member 4 swings in the direction of approaching the back surface of the rear portion of the hood 1 around the second horizontal axis P2 is blocked by the bent portion 5b of the hinge member 5). And the state in which the link member 4 swings around the second horizontal axis P2 in the direction away from the back surface of the rear portion of the hood 1 is prevented by the bent portion 5e of the hinge member 5).
In this case, since the notched portion 5d is formed in the bent portion 5e of the hinge member 5, the strength of the bent portion 5e of the hinge member 5 is set to be lower than the strength of the bent portion 5b of the hinge member 5. (The strength of the bent portion 5b of the hinge member 5 is set to be higher than the strength of the bent portion 5e of the hinge member 5).

7 (b), the bent portions 5b and 5e of the hinge member 5 are eliminated, and bent portions are integrally formed laterally on the upper and lower edge portions of the link member 4 so that the link member 4 There is a configuration in which the arm portion 5a of the hinge member 5 is held by the bent portions of the upper and lower edge portions, and a notch portion is formed in the bent portion of the upper edge portion of the link member 4.
The present invention can be applied not only to a hood 1 of a two-box type five-door type passenger car, but also to a hood 1 of a three-box type two-door or four-door type passenger car, and a hood 1 such as a commercial vehicle or a truck.

Side view of the front of the car body Side view of the back of the hood and the vicinity of the link member < Side view of the rear surface of the rear portion of the hood and the vicinity of the link member showing a state in which the rear portion of the hood is lifted when the traveling vehicle collides with an obstacle. Side view of the rear surface of the rear portion of the hood and the vicinity of the link member showing the state in which the hood is opened and operated while stopped Exploded perspective view of link member, connecting member, hinge member and bracket Longitudinal front view of link member, connecting member and hinge member (A) Longitudinal front view of link member, connecting member and hinge member according to first embodiment of invention, (B) Vertical front view of link member and hinge member according to second embodiment of invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hood 2 Fender 4 Link member 4a, 5b 1st prevention part 6, 5e 2nd prevention part 7 Lifting means 8 Lock mechanism P1 1st horizontal axis P2 2nd horizontal axis

Claims (2)

In food and fenders provided at a front portion of the vehicle body, comprising a pivotably forward link members vertically to the first horizontal axis around the fender, the backside of the end portion of the hood rear portion of the link member 2 A swingable connection around the horizontal axis,
A first blocking unit for blocking the link member from swinging in a direction approaching the back surface of the rear portion of the hood around the second horizontal axis; and the back surface of the rear portion of the hood around the second horizontal axis. A second blocking portion for blocking the state of swinging away from the hood or the link member, and setting the strength of the second blocking portion to be lower than the strength of the first blocking portion,
A lifting means for forcibly lifting the rear portion of the hood when the vehicle collides with an obstacle;
In a state where the lifting means is not operated , the link member swings around the first horizontal axis while the link member is fixed to the hood by the first and second blocking portions, thereby opening and closing the hood. Configure freely
Due to the operation of the lifting means, the second blocking portion is broken, the link member swings upward around the first horizontal axis, and the link member extends from the rear surface of the rear portion of the hood around the second horizontal axis. A hood structure for a vehicle configured to swing in a direction away from the rear and forcibly lift a rear portion of the hood. A lock mechanism that can freely connect and disconnect the front portion of the hood to the fixed portion of the vehicle body,
Due to the operation of the lifting means, the second blocking portion is broken, the link member swings upward around the first horizontal axis, and the link member extends from the rear surface of the rear portion of the hood around the second horizontal axis. 2. The lock mechanism according to claim 1 , wherein the lock mechanism is configured to swing in a direction away from the rear and allow the rear portion of the hood to move rearward as the rear portion of the hood is forcibly lifted . Vehicle hood structure.

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