JP2016037106A - Vehicle popup hood device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a vehicle popup hood device which can suppress the movement of a front end part of a hood to a lower side when forces from actuators are inputted.SOLUTION: A vehicle popup hood device 10 comprises a hood lock device 14 to which a hood striker 20 arranged at a front end part 12F of a front hood 12 is locked, and a pair of left and right actuators 18 which are arranged in a vehicle width direction at an interval. The pair of the actuators 18 move the front hood 12 to an upper side of a vehicle by pressing a region 12A at a rear side of the vehicle rather than the hood striker 20 and at a front side of the vehicle rather than a center of gravity G of the front hood 12 at the front hood 12 toward an upper side of the vehicle.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle pop-up hood device.

  In Patent Document 1 below, when an airbag device provided between an apron upper member and a hood is activated and an airbag bag body of the airbag device is inflated, an intermediate portion in the front-rear direction of the hood is provided. An automobile hood structure that is deformed to the upper side of the vehicle is disclosed. According to the hood structure of the automobile, the load absorbing stroke at the intermediate portion in the front-rear direction of the hood is secured by deforming the intermediate portion in the front-rear direction of the hood toward the vehicle upper side.

JP 2003-191866 A

  By the way, when the force input to the hood from the actuator (for example, the airbag device described in Patent Document 1 above) is shifted in the front-rear direction with respect to the center of gravity of the hood, the force from the actuator is input to the hood. When the hood tries to rotate. In particular, in a configuration in which the actuator is disposed on the rear side with respect to the center of gravity of the hood, when the force from the actuator is input to the hood, the front end of the hood tends to move downward (sink down). And).

  In view of the above facts, the present invention has an object to obtain a pop-up hood device for a vehicle that can prevent the front end of the hood from moving downward when a force from an actuator is input to the hood. is there.

  The pop-up hood device for a vehicle according to claim 1 is arranged with a hood lock device to which a hood striker provided at a front end portion of the hood is locked, and is spaced from the hood striker in the vehicle width direction. And a pair of left and right actuators for moving the hood to the upper side of the vehicle by pressing the vehicle rear side and the front side of the hood toward the upper side of the vehicle.

  According to the vehicle pop-up hood device of the first aspect, the pair of actuators are operated, and the pair of actuators pushes the hood toward the vehicle upper side, so that the hood pops up. Here, in this invention, a pair of actuator presses the site | part of the vehicle rear side rather than the hood striker in the hood and the vehicle front side rather than the gravity center of the hood. As a result, when a force from the actuator is input to the hood, the hood pops up while rotating in a direction in which the end portion of the hood on the front side of the vehicle moves to the upper side of the vehicle (while the rotational moment is acting).

  The pop-up hood device for a vehicle according to claim 2 is the hood lock device according to claim 1, wherein the hood lock device is capable of moving the hood lock device to the vehicle upper side in conjunction with the operation of the actuator. An end of the hood on the rear side of the vehicle is supported by a hood hinge that allows the end of the hood on the rear side of the vehicle to move upward in conjunction with the operation of the actuator. Yes.

  According to the vehicle pop-up hood apparatus of the second aspect, by providing the hood lock device and the hood hinge, the front end portion and the rear end portion of the hood can be lifted by the pair of actuators. In addition, in the present invention, the pair of actuators presses the above-described portion of the hood, so that the front end portion of the hood is lifted more quickly than the rear end portion of the hood.

  According to a third aspect of the present invention, there is provided the vehicle pop-up hood device according to the second aspect, wherein the hood lock device base moves the hood lock device to the upper side of the vehicle before the actuator is operated. And a lift restriction releasing device for releasing the restriction of the movement of the hood lock device to the vehicle upper side when the actuator is operated, and the hood hinge includes a hinge base fixed to the vehicle body, A first arm that is pivotally connected to the hinge base and that opens and closes the hood by being pivoted relative to the hinge base, and is fixed to an end of the hood on the vehicle rear side. An end of the hood on the vehicle rear side is rotatably connected to the first arm and rotated with respect to the first arm. A second arm that moves the first arm to the vehicle upper side, and in a state before the actuator is actuated, the rotation of the second arm relative to the first arm is restricted, and when the actuator is actuated, the first arm And a rotation restriction releasing device for releasing the restriction of the rotation of the second arm with respect to.

  According to the pop-up hood device for a vehicle according to claim 3, the movement restriction and release of the hood lock device are realized by the lifting restriction release device, and the rotation and release of the first arm by the rotation restriction release device. Is realized.

  The vehicle pop-up hood device according to the present invention has an excellent effect that the front end of the hood can be prevented from moving downward when the force from the actuator is input to the hood.

It is a side view which shows the front part of the vehicle provided with the pop-up hood apparatus for vehicles which concerns on 1st Embodiment. It is a side view which shows the hood hinge which supports the rear-end part of a hood, and has shown the state which the hood is located in a closed position. It is a side view corresponding to FIG. 2 which shows the hood hinge when an actuator act | operates. It is a side view corresponding to FIG. 1 which shows the front part of the vehicle provided with the pop-up hood apparatus for vehicles which concerns on 2nd Embodiment. It is a side view corresponding to FIG. 4 which shows the front part of the vehicle when an actuator act | operates. It is a front view which shows the front part of the vehicle provided with the pop-up hood apparatus for vehicles which concerns on 2nd Embodiment.

  The vehicle pop-up hood apparatus according to the first embodiment of the present invention will be described with reference to FIGS. It should be noted that arrows FR, UP, and OUT appropriately shown in the drawings respectively indicate the front direction (traveling direction), the upward direction, and the outer direction in the vehicle width direction of the vehicle. In addition, hereinafter, when simply using front and rear, left and right, and up and down directions, unless otherwise specified, front and rear in the vehicle front and rear direction, left and right in the vehicle left and right direction (vehicle width direction), and up and down in the vehicle up and down direction And

  As shown in FIG. 1, the vehicle pop-up hood apparatus 10 according to the present embodiment has a front hood 12 as a hood, which is a lifted position (reference numeral) indicated by a virtual line from a closed position (indicated by reference numeral A) indicated by a solid line. A hood lock device 14 is provided for holding until the state shown in FIG. Further, the vehicle pop-up hood apparatus 10 includes a hood hinge 16 that supports a rear end portion of the front hood 12. Furthermore, the vehicle pop-up hood apparatus 10 includes a pair of left and right actuators 18 that are actuated to move the front hood 12 from the closed position to the lifted position. Hereinafter, the schematic configuration of the front hood 12 will be described first, then the configuration of the hood hinge 16 will be described, and finally the configuration of the actuator 18 will be described.

(Configuration of front hood 12)
The front hood 12 extends in the vehicle front-rear direction and the vehicle width direction and is formed in a substantially rectangular shape in a vehicle plan view. The front hood 12 has a power unit room in which a power unit (not shown) is accommodated from above the vehicle. Covering. The rear end 12R of the front hood 12 is rotatably supported by a pair of hood hinges 16 described later. A hood striker 20 is fixed to an intermediate portion in the vehicle width direction of the front end portion 12F of the front hood 12. The front hood 12 is held in the closed position by the hood striker 20 being locked to a single hood lock device 14 disposed at the middle portion in the vehicle width direction at the front end of the vehicle body, that is, the front hood. Twelve rotations are restricted. The hood striker 20 is formed in a substantially U-shape that is open toward the vehicle upper side in a side view of the vehicle, and the lower end portion of the hood striker 20 is the vehicle in a state where the front hood 12 is closed. The locking portion 20A extends in the front-rear direction.

(Configuration of Hood Hinge 16)
As shown in FIGS. 2 and 3, the hood hinge 16 includes a hinge base 22 fixed to the vehicle body, a first arm 24 rotatably connected to the hinge base 22, and a pivot to the first arm 24. And a second arm 28 that is connected to the rear end 12R of the front hood 12 through a fastening member 26.

  The hinge base 22 is formed by subjecting a steel plate material to press working or the like. The hinge base 22 is fixed to the vehicle body from the fixed portion 22A fixed to the vehicle body and the rear end of the fixed portion 22A. And a tongue piece 22B extending toward the surface.

  The first arm 24 is formed by subjecting a steel plate material to press work or the like, similarly to the hinge base 22, and the first arm 24 is formed in a substantially triangular shape in a side view. Further, the rear end portion 24R of the first arm 24 is connected to the tongue piece portion 22B of the hinge base 22 via a pin 30 so as to be rotatable. The first hood 24 rotates with respect to the hinge base 22 to rotate the front hood 12, that is, the front hood 12 can be opened and closed. Further, an insertion hole 24 </ b> A through which a pin 36 to be described later is inserted is formed in an intermediate portion in the front-rear direction of the first arm 24.

  Similar to the hinge base 22 and the first arm 24, the second arm 28 is formed by subjecting a steel plate to press working or the like, and the second arm 28 is front and rear when the front hood 12 is closed. It is formed in a rectangular shape whose direction is the longitudinal direction. Further, the front end portion 28F of the second arm 28 is rotatably connected to the front end portion 24F of the first arm 24 via a pin 32. Further, an insertion hole 28 </ b> A through which a pin 36 constituting a part of the rotation restriction release device 34 is inserted is formed in the rear end portion 28 </ b> R of the second arm 28. The pin 36 is inserted into the insertion hole 24 </ b> A formed in the first arm 24 and the insertion hole 28 </ b> A formed in the second arm 28, so that the rotation of the second arm 28 relative to the first arm 24 is restricted. It has become so. Further, the actuator 38 that constitutes another part of the rotation restriction release device 34 and is fixed to the first arm 24 or the second arm 28 is operated, so that the pin 36 comes out of the insertion holes 24A, 28A (pin 36). ), The restriction on the rotation of the second arm 28 relative to the first arm 24 is released. As shown in FIGS. 1 and 3, the rear end portion 12 </ b> R of the front hood 12 can move upward in the vehicle by rotating the second arm 28 with respect to the first arm 24. It has become. The actuator 38 includes a micro gas generator smaller than the actuator 18 described later, and the actuator 38 is operated in conjunction with the operation of the actuator 18.

(Configuration of actuator 18)
As shown in FIG. 1, the actuator 18 includes a cylinder 40 that is formed in a cylindrical shape, and a rod 42 that is accommodated in the cylinder 40 and extends upward of the vehicle with respect to the cylinder 40. It is configured. A micro gas generator (not shown) is attached to the lower end of the cylinder 40. When the micro gas generator is activated and the pressure in the cylinder 40 increases, the rod 42 accommodated in the cylinder 40 extends to the upper side of the vehicle with respect to the cylinder 40. The actuator 18 of the present embodiment includes a lock mechanism (not shown) so that the state in which the rod 42 extends from the cylinder 40 is maintained. Thus, the extended rod 42 is prevented from returning into the cylinder 40.

  The pair of actuators 18 described above are fixed to an apron upper member (not shown) in a state where they are arranged at an interval in the vehicle width direction. Further, in the present embodiment, the upper end portion 42A of the rod 42 that extends to the cylinder 40 has a portion 12A on the rear side of the front hood 12 relative to the hood striker 20 and on the front side of the vehicle relative to the center of gravity G of the front hood 12. The fixed position of the actuator 18 to the vehicle body is set so as to press. The center of gravity G of the front hood 12 is calculated including the weight of other members that move together with the front hood such as a sound absorbing material (not shown) attached to the front hood 12.

(Operation and effect of this embodiment)
Next, the operation and effect of this embodiment will be described.

  As shown in FIG. 1, in the present embodiment, the pair of actuators 18 are operated, and the upper end portions 42 </ b> A of the rods 42 of the pair of actuators 18 press the front hood 12 toward the vehicle upper side. Further, as shown in FIGS. 2 and 3, the actuator 38 provided on the hood hinge 16 operates in conjunction with the operation of the actuator 18. Then, the second arm 28 of the hood hinge 16 is rotated with respect to the first arm 24 by the operating force of the actuator 18 input to the front hood 12. As a result, the rear end portion 12R of the front hood 12 moves toward the vehicle upper side. That is, the front hood 12 pops up.

  Here, in the present embodiment, the upper end portions 42A of the rods 42 of the pair of actuators 18 press the portion 12A on the front hood 12 on the vehicle rear side with respect to the hood striker 20 and on the vehicle front side with respect to the center of gravity G of the front hood 12. To do. As a result, when the force from the actuator 18 is input to the front hood 12, the front hood 12 pops up with the rotational moment acting in the direction of the arrow C with the center of gravity G as the center of rotation. Thereby, in this embodiment, when the force from the actuator 18 is input into the front hood 12, it can suppress that the front-end part 12F of the said front hood 12 moves below. That is, the rising delay of the front end portion 12F of the front hood 12 can be suppressed.

(Vehicle Pop-up Hood Device 44 According to Second Embodiment)
Next, the vehicle pop-up hood device 44 according to the second embodiment will be described. In addition, about the member and part which have the same function as the said embodiment, the code | symbol same as the said embodiment is attached | subjected and the description is abbreviate | omitted.

  As shown in FIGS. 4 and 5, the vehicle pop-up hood device 44 according to the present embodiment is characterized in that the hood lock device 14 is movable upward in conjunction with the operation of the actuator 18. is there. Thereby, in addition to the rear end portion 12R of the front hood 12, the front end portion 12F of the front hood 12 can be moved to the vehicle upper side.

  As shown in FIG. 6, the hood lock device 14 is rotatably supported by a hood lock device base 46 (hereinafter simply referred to as “lock base 46”). The lock base 46 is formed by pressing a steel plate material or the like. The lock base 46 is formed in a rectangular plate shape extending in the vehicle width direction with the vehicle longitudinal direction being the plate thickness direction. Yes. Further, a circular support hole 48 is formed at the end of the lock base 46 on the right side in the vehicle width direction and on the upper side of the vehicle. By inserting the support pin 50 fixed to the hood lock device 14 into the support hole 48, the hood lock device 14 can be rotated with respect to the lock base 46.

  The lock base 46 is rotatably attached with a fixing piece 54 as an ascending restriction release device that contacts the fixing pin 52 fixed to the lower end of the hood lock device 14. The fixed piece 54 is formed in a substantially fan shape when viewed from the front of the vehicle. The fixed piece 54 has a contact surface 54 </ b> A that contacts the fixed pin 52. When the contact surface 54A is in contact with the fixed pin 52, the movement of the hood lock device 14 to the vehicle upper side is restricted, that is, the rotation of the hood lock device 14 with respect to the lock base 46 is restricted. . Further, when the fixed piece 54 is rotated and the contact surface 54A and the fixed pin 52 are not in contact with each other, the hood lock device 14 can move to the vehicle upper side, that is, the hood lock. The device 14 can be rotated with respect to the lock base 46.

  Further, the fixed piece 54 is connected to the rod 42 of the actuator 18 via the cable 56, whereby the fixed piece 54 is rotated in conjunction with the operation of the actuator 18.

  As shown in FIGS. 4 to 6, in the present embodiment described above, the actuator 38 (see FIGS. 2 and 3) provided on the hood hinge 16 operates in conjunction with the operation of the pair of actuators 18. At the same time, the fixed piece 54 is rotated via the cable 56. Thereby, the front end part 12F and the rear end part 12R of the front hood 12 move to the vehicle upper side. That is, the front hood 12 pops up.

  Here, in the present embodiment, the upper end portions 42A of the rods 42 of the pair of actuators 18 press the portion 12A on the front hood 12 on the vehicle rear side with respect to the hood striker 20 and on the vehicle front side with respect to the center of gravity G of the front hood 12. To do. As a result, as shown in FIG. 4, in the present embodiment, the front end portion 12 </ b> F of the front hood 12 can be lifted more quickly than the rear end portion 12 </ b> R of the front hood 12.

  In the present embodiment, the example in which the fixed piece 54 is rotated via the cable 56 has been described. However, the present invention is not limited to this. For example, the fixed piece 54 can be rotated using a small actuator that operates in conjunction with the operation of the actuator 18.

  In the first and second embodiments, an example in which the rear end portion 12R of the front hood 12 is moved to the vehicle upper side by rotating the second arm 28 relative to the first arm 24 will be described. However, the present invention is not limited to this. For example, the rear end portion 12R of the front hood 12 may be moved to the vehicle upper side by deforming a part of a hinge arm that is rotatably connected to the hinge base 22.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and various modifications other than the above can be implemented without departing from the spirit of the present invention. Of course.

10 Vehicle pop-up hood device 12 Front hood (hood)
Rear end of 12R front hood (rear end of hood)
12F Front hood front end (hood front end)
12A A part of the front hood (hood) on the rear side of the vehicle with respect to the hood striker and the front side of the vehicle with respect to the center of gravity of the front hood 14 Hood lock device 16 Hood hinge 18 Actuator 20 Hood striker 22 Hinge base 24 First arm 28 Second arm 34 Rotation restriction release device 44 Pop-up hood device 46 for vehicle Hood lock device base 54 Fixed piece (lift restriction release device)
G Front hood center of gravity (hood centroid)

Claims (3)

A hood lock device to which a food striker provided at the front end of the hood is locked;
The hood is arranged at intervals in the vehicle width direction, and the hood is pushed above the vehicle by pressing a portion of the hood toward the vehicle rear side of the hood striker and the vehicle front side of the center of gravity of the hood toward the vehicle upper side. A pair of left and right actuators to move to the side,
Pop-up hood device for vehicles equipped with. The hood lock device is supported by a hood lock device base that enables the hood lock device to move upward in the vehicle in conjunction with the operation of the actuator.
2. The vehicle according to claim 1, wherein an end of the hood on the vehicle rear side is supported by a hood hinge that allows the end of the hood on the vehicle rear side to move to the vehicle upper side in conjunction with the operation of the actuator. Pop-up hood device. In the food lock device base,
In a state before the actuator is activated, the movement of the hood lock device is restricted to move upward in the vehicle, and when the actuator is actuated, the movement to lift the restriction of movement of the hood lock device to the vehicle upward is lifted. A deregulatory device is provided,
The hood hinge is
A hinge base fixed to the vehicle body,
A first arm that is pivotally connected to the hinge base and opens and closes the hood by being pivoted relative to the hinge base;
The hood is fixed to an end of the hood on the rear side of the hood and is rotatably connected to the first arm. A second arm that moves upward,
In a state before the actuator is operated, the rotation of the second arm with respect to the first arm is restricted, and the restriction of the rotation of the second arm with respect to the first arm is released when the actuator is activated. A rotation restriction releasing device to
The pop-up hood apparatus for vehicles of Claim 2 comprised including this.

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