JP6003848B2 - Pop-up hood device for vehicle - Google Patents

Description

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

  A vehicle pop-up hood device described in Patent Literature 1 below includes a fixing member (hinge arm) fixed to a hood, a second hinge portion (hinge base) fixed to a vehicle body, a second hinge portion, and a fixing member. And a rocking member (link) that connects the two. The swing member is provided with a piston cylinder unit (actuator), and the piston (rod) of the piston cylinder unit is connected to the fixed member. Then, when the piston cylinder unit is operated, the hood is pushed upward.

  Further, an annular bead is formed on the piston (rod), and the teeth of the annular bead engage with a ring provided on the cylinder. Thereby, the hood is held in the push-up position. When the collision load acts on the hood, the piston moves backward into the cylinder, and the teeth of the annular bead of the piston are sheared by the ring. Thereby, collision energy is absorbed. In addition, as a vehicle pop-up hood apparatus, there exists a thing described in the following patent document 2. FIG. Moreover, there exists a thing described in the following patent document 3 as a lock mechanism which controls the movement of the piston (rod) which pushed up the hood.

Japanese Patent No. 4887512 Japanese Patent No. 4410822 JP 2011-208738 A

  However, the above vehicle pop-up hood device has the following problems. In other words, at the push-up position, the piston cylinder unit is disposed so as to incline toward the vehicle upper side as it goes to the vehicle rear side in a side view. On the other hand, the direction of the collision load that occurs when a pedestrian or the like falls on the hood is a diagonally lower side behind the vehicle. For this reason, the direction in which the piston moves backward in the cylinder is greatly different from the direction of the collision load acting on the hood. Thereby, it is difficult to retreat the piston into the cylinder by the collision load and to shear the teeth of the annular bead of the piston. Therefore, the above vehicle pop-up hood device has room for improvement in that it effectively absorbs collision energy.

  In view of the above fact, an object of the present invention is to provide a vehicle pop-up hood device that can effectively absorb the collision energy to the hood.

  The pop-up hood device for a vehicle according to claim 1 is provided with a hinge base fixed to a vehicle body, a link rotatably supported by the hinge base, and a link rotatably supported by the link. A hinge arm fixed on the rear side and a hinge arm accommodated in an actuator provided on the link, and one end portion connected to the hinge arm to push the hinge arm upward in the hood when the actuator is operated. The hood is disposed at the push-up position and the link is rotated to the upper side of the hood, and is provided on one of the hinge base and the link, and in contact with the other of the hinge base and the link at the push-up position. The hood is held in the push-up position, and when a collision load is applied to the hood, the hood is plastically deformed to cause a collision error. It comprises an energy absorbing member that absorbs Energy, a.

  In the vehicle pop-up hood apparatus according to the first aspect, the link is rotatably supported by the hinge base fixed to the vehicle body. A hinge arm is rotatably supported on the link, and the hinge arm is fixed to the rear side of the hood. Further, one end of a rod is connected to the hinge arm, and the rod is accommodated in an actuator provided in the link. When the actuator is activated, the rod pushes up the hinge arm to the upper side of the hood, the hood is disposed at the upper position, and the link is rotated to the upper side of the hood.

  Here, an energy absorbing member is provided on one of the hinge base and the link. Then, at the push-up position, the other of the hinge base and the link and the energy absorbing member come into contact with each other, and the hood is held at the push-up position. This eliminates the need to use a lock mechanism that restricts the movement of the rod at the push-up position.

  When a collision load acts on the hood, the collision load is transmitted to the energy absorbing member via the link, and the energy absorbing member is plastically deformed. Thereby, collision energy is absorbed. At this time, since the movement of the rod is not restricted, the rod retracts to the lower side of the hood inside the actuator, and the link rotates to the lower side of the hood. As described above, since the collision energy is absorbed by the energy absorbing member different from the rod, when the collision energy is absorbed, it is possible to reduce the influence caused by the difference between the retreat direction of the rod and the direction of the collision load. As described above, the collision energy to the hood can be effectively absorbed.

  The pop-up hood device for a vehicle according to a second aspect is the invention according to the first aspect, wherein the hinge arm is arranged to be offset inward in the vehicle width direction with respect to the hinge base, and the link is a vehicle in the push-up position. By bending and deforming outward in the width direction, the energy absorbing member and the other of the link and the hinge base come into contact with each other.

  In the vehicle pop-up hood apparatus according to the second aspect, the hinge arm is arranged to be offset inward in the vehicle width direction with respect to the hinge base. Therefore, when the hinge arm pushes the hood up to the push-up position, if a force on the hood lower side acts on the hinge arm due to the reaction of pushing up the hood, a rotational moment acts on the link. Then, the link is bent and deformed outward in the vehicle width direction, and the other of the link and the hinge base is brought into contact with the energy absorbing member.

  Therefore, the hinge base and the hinge arm are brought into contact with the other of the hinge base and the link and the energy absorbing member by utilizing the flexural deformation of the link with respect to the vehicle arranged offset in the vehicle width direction. be able to.

  The vehicle pop-up hood apparatus according to a third aspect is the invention according to the second aspect, wherein the energy absorbing member is provided on the hinge base, and a lower end of the link is brought into contact with the energy absorbing member at a push-up position. The

  In the vehicle pop-up hood apparatus according to the third aspect, the energy absorbing member is provided on the hinge base, and the lower end of the link is brought into contact with the energy absorbing member at the push-up position. For this reason, a link and an energy absorption member can be made to contact | abut using the site | part with a large displacement amount when a link bends and deforms. Thereby, a link can be made to contact | abut to an energy absorption member favorably.

  The vehicle pop-up hood apparatus according to a fourth aspect is the invention according to the third aspect, wherein the energy absorbing member is provided with an abutting piece disposed to face the lower end of the link in the push-up position. A protruding portion that protrudes upward is formed at the inner end of the contact piece in the vehicle width direction.

  In the vehicle pop-up hood apparatus according to the fourth aspect, the contact piece is provided on the energy absorbing member, and the lower end of the link is arranged to face the contact piece at the push-up position. Further, a protruding portion that protrudes upward is formed at the inner end of the contact piece in the vehicle width direction. As a result, when the link moves inward in the vehicle width direction at the push-up position, the lower end of the link abuts (locks) with the protruding portion, and the movement of the link inward in the vehicle width direction is suppressed.

  When a collision load is applied to the hood, the contact piece is bent and deformed to the lower side of the hood, so that the collision energy is absorbed. For this reason, for example, by appropriately changing the protrusion height of the protrusion, the period from the start of bending deformation of the contact piece to the release of the contact state between the contact piece and the lower end of the link can be easily achieved. Can be adjusted. Therefore, it is possible to easily set a period for absorbing the collision energy by the contact piece.

  According to the pop-up hood device for a vehicle according to claim 1, collision energy to the hood can be effectively absorbed.

  According to the vehicle pop-up hood apparatus of the second aspect, the hood can be held in the push-up position with a simple configuration.

  According to the vehicle pop-up hood apparatus of the third aspect, the link can be satisfactorily brought into contact with the energy absorbing member.

  According to the vehicle pop-up hood apparatus of the fourth aspect, it is possible to easily set the period for absorbing the collision energy by the contact piece.

It is the typical perspective view seen from the vehicle right diagonal front which expands and shows the state where the hood hinge used for the pop-up hood apparatus for vehicles concerning this embodiment pushed up the hood to the pushing-up position. It is a top view which shows the whole structure of the pop-up hood apparatus for vehicles which concerns on this Embodiment. FIG. 3 is a side view of the hood hinge in a normal state (actuator inoperative state) arranged on the right side of the vehicle shown in FIG. It is a front view which shows the hood hinge shown by FIG. It is a perspective view corresponding to FIG. 1 which shows the hood hinge shown by FIG. It is a side view corresponding to FIG. 3 which shows the hood hinge shown by FIG. It is a front view corresponding to FIG. 4 which shows the hood hinge shown by FIG. It is a front view which expands and shows the other example of the EA bracket shown by FIG.

  Hereinafter, the vehicle pop-up hood apparatus 10 according to the present embodiment will be described with reference to the drawings. Note that an arrow FR appropriately shown in the drawings indicates the front of the vehicle, an arrow UP indicates the upper side of the vehicle, and an arrow RH indicates the right side of the vehicle.

  As shown in FIG. 2, the vehicular pop-up hood apparatus 10 is mainly configured by a pair of left and right pop-up mechanism sections 20 disposed on both sides of the rear end side of the hood 12 that opens and closes the engine room. . Since the left and right pop-up mechanism units 20 have the same configuration, the following description will explain the configuration of the pop-up mechanism unit 20 disposed on the right side of the vehicle, and the configuration of the pop-up mechanism unit 20 disposed on the left side of the vehicle. Is omitted.

  As shown in FIG. 3, the pop-up mechanism 20 includes a hood hinge 22 that supports the hood 12 so that the hood 12 can be opened and closed, an actuator 50 that operates at the time of a collision with a collision object such as a pedestrian, and a rod provided on the actuator 50. 56 and an energy absorption bracket (hereinafter referred to as “EA bracket”) 60 as an energy absorption member provided on the hood hinge 22. Hereinafter, the configuration of the hood 12 will be described first, and then each of the above configurations will be described.

  The hood 12 includes a hood outer panel 14 that is disposed outside the vehicle and forms a design surface, and a hood inner panel 16 that is disposed on the engine room side and reinforces the hood outer panel 14. Are connected by hemming. Further, the rear end side (rear side) of the hood inner panel 16 bulges toward the lower side of the hood, thereby forming a rear end bulge portion 16A on the rear end side of the hood 12.

<Configuration of Hood Hinge 22>

  As shown in FIGS. 3 to 5, the hood hinge 22 includes a hinge base 24, a rotation link 30 as a link, and a hinge arm 40. The hinge base 24 is formed in a substantially inverted L shape when viewed from the front of the vehicle, and is substantially V-shaped when opened obliquely forward on the vehicle when viewed from the side in the vehicle width direction (see FIG. 6 for details). Is formed. The hinge base 24 includes a plate-like attachment portion 24A extending along the vehicle front-rear direction. The mounting portion 24A is disposed on the upper surface portion 18A (see FIG. 3) of the cowl top side 18 that is a vehicle body side component, with the plate thickness direction being substantially the vehicle vertical direction. The cowl top side 18 is provided on both sides of the cowl extending along the vehicle width direction between the rear end side of the hood 12 and the lower end portion of the windshield glass. In addition, a pair of mounting holes 26 (see FIG. 5) are formed through the mounting portion 24A, mounting bolts (not shown) are inserted into the mounting holes 26, and the mounting portion 24A is attached to the upper surface portion by the mounting bolts. It is fixed to 18A. Further, the hinge base 24 is provided with a support portion 24B. The support portion 24B is bent from the inner end of the mounting portion 24A in the vehicle width direction to the vehicle upper side, and the plate thickness direction is substantially the vehicle width direction. It is formed in a shape.

  The rotation link 30 is disposed on the inner side in the vehicle width direction (one side in the vehicle width direction) of the hinge base 24 and is formed in a substantially inverted triangular plate shape in a side view. Specifically, the rotation link 30 includes a lower end 30A, a front end 30B disposed on the vehicle front side and the vehicle upper side of the lower end 30A, a vehicle rear side and a vehicle upper side of the lower end 30A in a side view. It is formed in a substantially inverted triangular plate shape with the rear end portion 30C arranged on the side as a vertex (see FIG. 3). Further, a bending portion 32 (see FIGS. 4 and 5) is formed in the vehicle longitudinal direction intermediate portion of the turning link 30. The bending portion 32 is inward in the vehicle width direction toward the front side of the vehicle in plan view. Is inclined to. As a result, the front portion of the turning link 30 (the portion on the vehicle front side with respect to the bending portion 32) is the vehicle width direction inner side than the rear portion of the turning link 30 (the portion on the vehicle rear side with respect to the bending portion 32). The lower end portion 30 </ b> A of the rotation link 30 is formed at the front portion of the rotation link 30.

  Further, the rear end portion 30 </ b> C of the rotation link 30 is hinged to the upper end portion of the support portion 24 </ b> B of the hinge base 24 by a hinge pin 34. Thereby, the rotation link 30 is comprised so that rotation in the vehicle up-down direction (arrow A direction and arrow B direction of FIG. 3) centering | focusing on the hinge pin 34 is possible. Further, a connecting shaft 36 that rotatably supports a lower end portion of an actuator 50 to be described later is provided at the lower end portion 30A of the rotation link 30. The connecting shaft 36 is formed in a substantially cylindrical shape, and protrudes inward in the vehicle width direction from the rotary link 30 with the axial direction as the vehicle width direction. A flange 38 is integrally formed on the outer peripheral portion of the rotation link 30 except for the upper side (side connecting the front end portion 30B and the rear end portion 30C), and the flange 38 is inward in the vehicle width direction. It is bent.

  The hinge arm 40 is disposed on the inner side in the vehicle width direction of the front portion of the rotation link 30 and extends substantially along the vehicle front-rear direction. Specifically, the hinge arm 40 includes a side wall portion 40 </ b> A arranged in parallel to the front portion of the rotation link 30, and the front end portion of the side wall portion 40 </ b> A is a hinge pin on the front end portion 30 </ b> B of the rotation link 30. 42 is hinged. Accordingly, the hinge arm 40 is configured to be rotatable relative to the rotation link 30 in the vehicle vertical direction (the arrow C direction and the arrow D direction in FIG. 3) with the hinge pin 42 as the rotation center.

  In addition, the hinge arm 40 includes a top wall portion 40B. The top wall portion 40B is formed by being bent inward in the vehicle width direction from the upper end portion of the side wall portion 40A, and extends in the vehicle front-rear direction along the lower surface of the rear end bulge portion 16A of the hood 12 ( (See FIG. 3). A mounting hole 44 (see FIGS. 4 and 5) is formed through the front portion of the top wall portion 40B, and a weld is formed in the rear end bulge portion 16A of the hood 12 at a position corresponding to the mounting hole 44. A nut (not shown) is fixed. A hinge bolt (not shown) is inserted into the mounting hole 44 from the lower side of the vehicle and screwed into the weld nut, whereby the top wall portion 40B is fastened (fixed) to the rear end bulge portion 16A. Thus, the hinge base 24 and the hood 12 (the rear end bulge portion 16A) are connected by the hinge arm 40 and the rotation link 30.

  Further, as described above, the hinge base 24, the rotation link 30, and the hinge arm 40 are arranged in this order toward the inner side in the vehicle width direction. Therefore, in the hood hinge 22, the top wall portion 40 </ b> B (fixed portion with the hood 12) of the hinge arm 40 is offset inward in the vehicle width direction with respect to the mounting portion 24 </ b> A (fixed portion with the vehicle body) of the hinge base 24. Are arranged.

  Further, a connecting shaft 46 for connecting a rod 56 described later is integrally provided at the rear end portion of the side wall portion 40 </ b> A of the hinge arm 40. The connecting shaft 46 is formed in a substantially cylindrical shape and protrudes inward in the vehicle width direction from the side wall portion 40A.

  The hood hinge 22 is essentially a hinge part for supporting the hood 12 on the body (vehicle body) so as to be openable and closable. In the present embodiment, the hood hinge 22 is also a component of the vehicle pop-up hood device 10. That is, when the hood 12 is opened and closed during normal operation, the relative rotation of the hinge arm 40 with respect to the rotation link 30 is regulated by an actuator 50 and a rod 56 (described later) (the state shown in FIGS. 3 to 5). The rotation link 30 is rotated about the hinge pin 34 as a rotation center.

<Configuration of actuator 50>

  As shown in FIGS. 3 and 6, the actuator 50 is formed in a substantially cylindrical shape and is disposed on the inner side in the vehicle width direction of the rotation link 30. An actuator bracket 52 is integrally provided at the lower portion of the actuator 50, and the lower end portion of the actuator bracket 52 is rotatably supported on the connecting shaft 36 of the rotation link 30. Thereby, the lower end portion of the actuator 50 is configured to be rotatable relative to the rotation link 30.

  A gas generator (not shown) is accommodated in the housing 54 of the actuator 50. This gas generator is electrically connected to an ECU (control means) (not shown), and the ECU detects or predicts a collision with a collision object such as a pedestrian disposed in a front bumper or the like. It is electrically connected to (collision detection means).

<Configuration of rod 56>

  The rod 56 is accommodated in the housing 54 of the actuator 50. The rod 56 is a straight rod-like member, and is disposed coaxially with the housing 54. A piston (not shown) is provided at the lower end of the rod 56, and the piston is tightly accommodated in the housing 54. The gas generated by the gas generator of the actuator 50 is supplied into the housing 54, and the piston rises along the axial direction of the housing 54 due to the gas pressure in the housing 54.

  A rod connecting portion 58 is integrally provided at the upper end portion (one end portion) of the rod 56, and the rod connecting portion 58 is formed in a substantially cylindrical shape whose axial direction is the vehicle width direction. Then, the connecting shaft 46 of the hinge arm 40 is inserted into the rod connecting portion 58, and the upper end portion of the rod 56 is connected to the hinge arm 40 so as to be relatively rotatable. Thus, the actuator 50 connects the rear end portion of the hinge arm 40 and the lower end portion 30A of the rotation link 30 and is disposed so as to be inclined toward the vehicle rear side as it goes to the vehicle upper side in a side view.

  And if the actuator 50 act | operates from the non-operation state (state shown by FIGS. 3-5) of the actuator 50, the rod 56 will move upwards with a raise of a piston. Accordingly, the rear end portion of the hinge arm 40 is pushed upward by the rod connecting portion 58 of the rod 56, and the hood 12 is arranged at the pushed-up position (position shown in FIG. 6). . At this time, the hinge arm 40 is relatively rotated to the upper side of the hood (arrow C direction side in FIG. 3) with respect to the rotation link 30 with the hinge pin 42 as the rotation center. Further, in conjunction with the rotation of the hinge arm 40, the rotation link 30 is rotated relative to the upper side of the hood (in the direction of arrow A in FIG. 3) with respect to the hinge base 24 with the hinge pin 34 as the rotation center. It is configured. Further, in the push-up position, the piston and the rod 56 are not locked to the housing 54, and a load on the hood lower side that is a predetermined value or more acts on the rod 56, so that the rod 56 moves inside the housing 54 to the hood lower side. It is configured to retreat.

<Configuration of EA bracket 60>

  As shown in FIGS. 3 to 5, when the actuator 50 is in an inoperative state, the EA bracket 60 is disposed between the front portion of the rotation link 30 and the front end portion of the hinge base 24 and is substantially in a front view. It is formed in an inverted L-shaped plate shape. Specifically, the EA bracket 60 has a bracket mounting portion 62, and the bracket mounting portion 62 is fixed to the support portion 24B of the hinge base 24 by welding or the like with the plate thickness direction being the vehicle width direction. The EA bracket 60 has a contact piece 64, and the contact piece 64 extends inward in the vehicle width direction from the upper end of the bracket mounting portion 62 with the plate thickness direction being the vehicle vertical direction. The contact piece 64 is disposed at a position corresponding to the lower end 30AA of the rotation link 30 at the push-up position, and the lower end 30AA of the turn link 30 disposed at the push-up position contacts the upper surface of the contact piece 64. (See FIG. 1, FIG. 6, and FIG. 7). Thereby, the rotation of the rotation link 30 to the lower side of the hood (the direction of the arrow B in FIG. 6) is restricted by the EA bracket 60, and the hood 12 is held at the push-up position.

  Further, a bent portion 66 as a protruding portion is formed at the tip end portion (vehicle width direction inner side end portion) of the contact piece 64, and the bent portion 66 is on the vehicle upper side and the vehicle width direction inner side in a front view. It is bent. Then, the rotation link 30 (the flange 38) abutted on the upper surface of the abutment piece 64 abuts (locks) to the bent portion 66, so that the rotation link 30 moves inward in the vehicle width direction. It is supposed to be suppressed.

  Further, when the rotation of the rotation link 30 is restricted by the contact piece 64, the lower end 30 </ b> AA of the rotation link 30 is configured to contact the front portion of the contact piece 64. In other words, the lower end 30AA of the rotation link 30 is set so as to be in contact with the front side of the vehicle in the vehicle longitudinal direction center portion of the contact piece 64.

  Further, when the hood 12 is held at the pushed-up position by the EA bracket 60 and a collision load of a predetermined value or more on the lower side of the hood acts on the hood 12, the contact piece 64 is bent and deformed downward on the hood. Is configured to do.

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

  The state shown in FIGS. 3 to 5 is the non-operating state of the vehicle pop-up hood device 10. In this state, since the actuator 50 is in an inoperative state, the rod 56 is accommodated in the housing 54 of the actuator 50. Further, the rod connecting portion 58 at the tip of the rod 56 is rotatably connected to the connecting shaft 46 at the rear end of the hinge arm 40.

  From this state, when a collision object such as a pedestrian collides with the vehicle, the collision detection unit detects that the collision object collides with the collision object and outputs a collision signal to the ECU. Based on the input collision signal, the ECU determines whether or not the vehicle pop-up hood device 10 should be operated. When the ECU determines that the vehicle pop-up hood device 10 should be operated, an operation signal is output to the actuator 50. The As a result, the gas generation device of the actuator 50 is operated, and gas is supplied into the housing 54.

  When gas is supplied into the housing 54, the piston is moved to the axial front end side of the housing 54 (that is, the hood upper side) by the gas pressure in the housing 54. Since the lower end portion of the rod 56 is connected to the piston, when the piston moves up in the housing 54, the rod 56 moves in the axial direction toward the upper side of the hood.

  Then, when the rod 56 moves in the axial direction toward the upper side of the hood, the rear end portion of the hinge arm 40 is pushed upward by the rod connecting portion 58 of the rod 56 and the hood 12 is arranged at the pushed-up position. (See FIGS. 1, 6, and 7). At this time, the hinge arm 40 is rotated relative to the upper side of the hood with respect to the rotation link 30 with the hinge pin 42 as the rotation center, and the rotation link 30 is relative to the hinge base 24 with the hinge pin 34 as the rotation center. The hood is relatively rotated upward.

  Further, when the hood 12 is disposed at the push-up position, a force on the hood lower side acts on the hinge arm 40 by the reaction of pushing up the hood 12. On the other hand, in the hood hinge 22, the top wall portion 40B (fixed portion with the hood 12) of the hinge arm 40 is offset inward in the vehicle width direction with respect to the mounting portion 24A (fixed portion with the vehicle body) of the hinge base 24. Is arranged. Therefore, when a force on the lower side of the hood acts on the hinge arm 40, a clockwise turning moment (see arrow M in FIG. 7) acts on the turning link 30 in a front view. Thereby, the turning link 30 is bent and deformed outward in the vehicle width direction, and the lower end 30AA of the turning link 30 moves outward in the vehicle width direction (the other side in the vehicle width direction) (indicated by a two-dot chain line in FIG. 7). Move from the position to the position indicated by the solid line).

  Here, an EA bracket 60 is provided on the hinge base 24. At the push-up position, the lower end 30AA of the pivot link 30 that has moved outward in the vehicle width direction abuts (climbs on) the upper surface of the abutment piece 64 of the EA bracket 60, and the pivot link 30 moves downward on the hood. The rotation is restricted. Accordingly, since the hood 12 is held at the push-up position by the EA bracket 60, it is not necessary to use a lock mechanism that restricts the movement of the rod 56 at the push-up position. In addition, after the lower end 30AA of the rotation link 30 comes into contact with the upper surface of the contact piece 64 of the EA bracket 60, the force on the lower side of the hood acts on the hinge arm 40 due to the weight of the hood 12, and thus the rotation link 30. The contact state between the EA bracket 60 and the EA bracket 60 is maintained.

  When a collision load of a predetermined value or more is applied to the hood 12, the collision load is transmitted to the contact piece 64 of the EA bracket 60 via the rotation link 30, and the contact piece 64 moves downward in the hood. Bend and deform. Thereby, collision energy is absorbed. At this time, since the movement of the rod 56 is not restricted, the rod 56 moves backward in the actuator 50 to the lower side of the hood, and the rotation link 30 rotates to the lower side of the hood (arrow B direction side in FIG. 6). . As described above, since the collision energy is absorbed by the EA bracket 60 different from the rod 56, when the collision energy is absorbed, it is possible to reduce the influence caused by the difference between the retraction direction of the rod 56 and the direction of the collision load. As described above, collision energy can be effectively absorbed.

  As described above, in the hood hinge 22, the top wall portion 40 </ b> B (fixed portion with the hood 12) of the hinge arm 40 is in the vehicle width direction with respect to the mounting portion 24 </ b> A (fixed portion with the vehicle body) of the hinge base 24. It is arranged offset inside. For this reason, in the push-up position, the rotating link 30 is bent and deformed outward in the vehicle width direction by the force on the hood lower side acting on the hinge arm 40. And the lower end 30AA of the rotation link 30 contacts the upper surface of the EA bracket 60 as the rotation link 30 moves outward in the vehicle width direction. As a result, the vehicle in which the hinge base 24 and the hinge arm 40 are arranged offset in the vehicle width direction is applied to the EA bracket 60 and the rotation link 30 by utilizing the bending deformation of the rotation link 30. Can be touched. Therefore, the hood 12 can be held at the push-up position with a simple configuration.

  Further, as described above, the lower end 30AA of the rotation link 30 is brought into contact with the contact piece 64 of the EA bracket 60. For this reason, the rotation link 30 and the EA bracket 60 can be brought into contact with each other using a portion having a large displacement when the rotation link 30 is bent and deformed. Thereby, the lower end 30AA of the rotation link 30 can be satisfactorily brought into contact with the contact piece 64 of the EA bracket 60.

  Further, a bent portion 66 is formed at the tip end portion (vehicle width direction inner side end portion) of the contact piece 64, and movement of the lower end 30 </ b> AA of the rotation link 30 to the vehicle width direction inner side is suppressed by the bent portion 66. Has been. For this reason, for example, the contact state between the contact piece 64 and the lower end 30AA of the rotary link 30 is released from the start of the bending deformation of the contact piece 64 by appropriately adjusting the bending height and the bending angle of the bent portion 66. The period until it is done can be easily adjusted. That is, it is possible to easily set the period for absorbing the collision energy by the contact piece 64.

  In the present embodiment, the EA bracket 60 is provided on the hinge base 24, but the EA bracket 60 may be provided on the rotating link 30. For example, the bracket attachment portion 62 may be fixed to the lower end portion 30 </ b> A of the rotation link 30 and the contact piece 64 may be configured to extend outward from the bracket attachment portion 62 in the vehicle width direction. In this case, the contact piece 64 may be configured to contact the outer peripheral edge portion of the support portion 24B of the hinge base 24.

  Furthermore, in the present embodiment, the contact piece 64 of the EA bracket 60 is arranged with the plate thickness direction being the vehicle vertical direction. In other words, the contact piece 64 is horizontally arranged in a side view. Instead of this, the contact piece 64 may be slightly inclined toward the vehicle upper side as it goes to the vehicle rear side in a side view. Thereby, the contact piece 64 can be arranged along the direction orthogonal to the rotation direction of the rotation link 30. Therefore, the collision load can be efficiently transmitted to the contact piece 64.

  Further, as shown in FIG. 9, the contact piece 64 may be inclined toward the vehicle lower side toward the vehicle width inner side when viewed from the front, and although not shown, the contact piece 64 and the bent portion 66 You may form the groove | channel open | released to the vehicle upper side in the ridgeline part of the boundary. Accordingly, the lower end 30AA of the rotation link 30 is arranged at the ridge line portion at the boundary between the abutment piece 64 and the bent portion 66, and therefore, the lower end 30AA of the rotation link 30 moves outward in the vehicle width direction. Can be suppressed. As a result, the posture of the rotation link 30 when the lower end 30AA of the rotation link 30 comes into contact with the upper surface of the contact piece 64 can be stabilized.

  Further, in the present embodiment, the bent portion 66 is formed at the tip end portion (the vehicle width direction inner end portion) of the contact piece 64, but the bent portion 66 may be omitted. Further, instead of the bent portion 66, a boss or the like protruding upward from the vehicle may be formed at the tip of the contact piece 64.

10 Vehicle Pop-up Hood Device 12 Hood 18 Cowl Top Side 24 Hinge Base 30 Rotating Link (Link)
30AA Lower end of rotating link (lower end of link)
40 Hinge arm 50 Actuator 56 Rod 60 Energy absorption bracket (energy absorption member)
64 Contact piece 66 Bent part (protruding part)

Claims (4)

A hinge base fixed to the vehicle body,
A link rotatably supported by the hinge base;
A hinge arm supported rotatably on the link and fixed to the rear side of the hood;
It is housed in an actuator provided in the link, and one end is connected to the hinge arm, and when the actuator is operated, the hinge arm is pushed upward to place the hood in the push-up position; A rod for rotating the link to the upper side of the hood;
It is provided on one of the hinge base and the link, abuts against the other of the hinge base and the link at the push-up position to hold the hood at the push-up position, and is plastically deformed when a collision load acts on the hood. An energy absorbing member that absorbs collision energy,
Pop-up hood device for vehicles equipped with. The hinge arm is disposed offset inward in the vehicle width direction with respect to the hinge base,
The vehicle pop-up hood device according to claim 1, wherein the energy absorbing member and the other of the link and the hinge base come into contact with each other when the link is bent and deformed outward in the vehicle width direction at the push-up position. The energy absorbing member is provided on the hinge base;
The vehicle pop-up hood apparatus according to claim 2, wherein a lower end of the link is brought into contact with the energy absorbing member at a push-up position. The energy absorbing member is provided with an abutting piece arranged to face the lower end of the link in the push-up position,
The vehicle pop-up hood apparatus according to claim 3, wherein a protruding portion protruding upward is formed at an end of the abutting piece on the inner side in the vehicle width direction.

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