JP2015145208A - Vehicle pop-up hood device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inhibit addition of the weight of a front hood.SOLUTION: A vehicle pop-up hood device 10 includes: a front hood 12 extending in a vehicle width direction and a vehicle fore and aft direction at a vehicle front part; and a stopper 13 which is disposed below the front hood 12 and supports the front hood 12 by its upper end 13A contacting with the front hood 12. The vehicle pop-up hood device 10 includes an actuator 16 which is disposed below the front hood 12 so as to be located adjacent to the stopper 13 and spaced away from the front hood 12. The actuator 16 contacts with the front hood 12 and brings up the front hood 12 to the vehicle upper side thereby moving the front hood 12 from a closed position to a lifted position.

Description

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

  Patent Documents 1 to 5 below disclose a pop-up hood device for a vehicle in which an actuator disposed on the lower side of the front hood lifts the front end portion of the front hood or the entire front hood toward the upper side of the vehicle. Yes. Further, in the vehicle pop-up hood device described in Patent Literature 1 to Patent Literature 5 below, the front hood is a stopper (see FIG. 4 of the above Patent Literature 4) in a state before the actuator is operated and the front hood is closed. 3), the clearance between the front hood and the radiator support member is ensured.

Special table 2006-518016 gazette Japanese Patent Laid-Open No. 2004-249872 JP 2004-299614 A JP 2005-28931 A JP 2006-199179 A

  By the way, when the front hood is deformed with the hood hinge supporting the front hood or the stopper described above as a fulcrum, it is conceivable that the front hood comes into contact with an actuator constituting a part of the pop-up hood device. If the clearance between the front hood and the actuator is increased in order to prevent the front hood from coming into contact with the actuator, the free running distance until the actuator comes into contact with the front hood becomes longer, and the actuator hits the front hood. The impact when touching is increased. As a result, it is necessary to reinforce the portion of the front hood where the actuator abuts, and as a result, the weight of the front hood increases.

  In view of the above facts, an object of the present invention is to provide a vehicle pop-up hood device that can suppress an increase in the weight of a front hood.

  The vehicle pop-up hood device according to claim 1 is disposed at a front portion of the vehicle in a vehicle width direction and a vehicle front-rear direction at a front portion of the vehicle, and is disposed on a lower side of the front hood, and an upper end abuts the front hood. A stopper that supports the front hood, and is disposed adjacent to the stopper on the lower side of the front hood and spaced apart from the front hood, and abuts the front hood so that the front hood And an actuator that moves the front hood from the closed position to the lifted position by lifting it up.

  According to the vehicle pop-up hood apparatus of the first aspect, when the actuator is operated, the front hood is moved from the closed position to the lifted position after the actuator comes into contact with the front hood. This pops up the front hood. By the way, in a state where the front hood is located at the closed position, a part of the front hood is supported by the stopper. In other words, the portion of the front hood where the stopper abuts and the displacement of the peripheral portion of the portion in the vehicle vertical direction are regulated by the stopper. This makes it possible to set a small clearance between the actuator and the front hood that are arranged adjacent to the stopper, that is, to shorten the idle running distance until the actuator contacts the front hood. It becomes. As a result, the impact when the actuator comes into contact with the front hood is reduced, so that it is not necessary to reinforce the portion of the front hood where the actuator comes into contact, thereby suppressing an increase in the weight of the front hood. .

  The vehicle pop-up hood apparatus according to claim 2 is the invention according to claim 1, wherein the rear end portion of the front hood is rotatably supported by a hood hinge, and the stopper is a front end portion of the front hood. The front hood of the front hood is supported by coming into contact with the actuator, and the actuator is disposed on the vehicle rear side of the stopper.

  According to the pop-up hood device for a vehicle according to claim 2, the actuator is disposed on the vehicle rear side of the stopper, that is, the actuator is disposed on the hood hinge side with respect to the stopper. The contact of the hood with the actuator can be suppressed.

  A pop-up hood device for a vehicle according to claim 3 is the invention according to claim 1 or 2, wherein the front hood is disposed on the vehicle upper side and extends in the vehicle front-rear direction and the vehicle width direction, and the hood A hood inner panel disposed on the vehicle lower side of the outer panel, and a portion of the hood inner panel facing the stopper and the actuator in the vehicle vertical direction is disposed on the stopper and the actuator side. A convex portion is formed in which the front end surface in the protruding direction is a contacted surface that contacts the stopper and the actuator.

  According to the vehicle pop-up hood apparatus of the third aspect, the rigidity of the portion where the stopper and the actuator come into contact with each other in the hood inner panel can be improved without providing an additional reinforcing member.

  The vehicle pop-up hood apparatus according to claim 4 is the invention according to any one of claims 1 to 3, wherein a thickness of a portion of the front hood where the stopper and the actuator abut is a peripheral portion thereof. It is set to be thicker than the thickness.

  According to the vehicle pop-up hood apparatus of the fourth aspect, it is possible to improve the strength and rigidity of the portion of the front hood where the stopper and the actuator come into contact while suppressing an increase in the weight of the front hood.

  The vehicle pop-up hood device according to the first to fourth aspects of the present invention has an excellent effect that an increase in the weight of the front hood can be suppressed.

It is the front view which showed typically the pop-up hood apparatus for vehicles of this embodiment. It is the perspective view which showed typically the front part of the vehicle provided with the pop-up hood apparatus for vehicles shown by FIG. FIG. 3 is an enlarged side cross-sectional view showing a cross section of a front portion of a vehicle body cut along line 3-3 shown in FIG. 2. It is an expansion perspective view which expands and shows the site | part in which the convex bead was formed in the food inner panel. It is an expansion perspective view which expands and shows the part to which the stopper and the actuator were attached in the front part of a vehicle body. It is a sectional side view which shows the cross section of the actuator cut | disconnected along the axial direction. It is a sectional side view corresponding to FIG. 3 which shows the front hood which the impactor for a collision test contact | abutted.

  Next, a vehicle pop-up hood apparatus according to an 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 FIGS. 1 and 2, the vehicle pop-up hood device 10 of the present embodiment has a front hood 12 that extends in the vehicle width direction and the vehicle front-rear direction at the front of the vehicle, and an upper end that abuts the front hood 12. And a stopper 13 for supporting the front hood 12. Further, the pop-up hood device 10 for a vehicle lifts the front hood 12 from the closed position (indicated by the symbol A) to the raised position (indicated by the symbol B) by lifting the front hood 12 upward. A pair of actuators 16 to be moved is provided. Further, the vehicle pop-up hood device 10 holds the front hood 12 from the closed position to the lifted position, and the hood lock device 14 is fixed to fix the hood lock device 14 in the closed position (indicated by the symbol C). A device 18 and a fixing release device 20 that releases the fixing of the hood lock device 14 by the fixing device 18 in conjunction with the operation of the actuator 16 are provided. Hereinafter, the schematic configuration of the front hood 12 will be described first, and then the hood lock device 14, the stopper 13, and the actuator 16 will be described.

(Configuration of front hood 12)
As shown in FIG. 2, the front hood 12 is formed in a substantially rectangular shape in a vehicle plan view, and the front hood 12 covers a power unit room in which a power unit (not shown) is accommodated from above the vehicle. Specifically, as shown in FIG. 3, the front hood 12 is disposed on the vehicle upper side and extends in the vehicle front-rear direction and the vehicle width direction, and is disposed on the vehicle lower side of the hood outer panel 70. And a hood inner panel 72. The hood outer panel 70 and the hood inner panel 72 are integrated by subjecting the end portion of the hood outer panel 70 to hemming or the like.

  The front end portion 70A of the hood outer panel 70 is gently curved so as to be convex toward the vehicle upper side, and the front end portion 72A of the hood inner panel 72 is joined to which the front end portion of the hood outer panel 70 is joined. A portion 74, a general portion 76 extending from the rear end of the joint portion 74 toward the vehicle rear side, and an inclined portion 78 extending inclined toward the vehicle rear side from the rear end of the general portion 76 toward the vehicle upper side. Have. By forming the front end portion 70A of the hood outer panel 70 and the front end portion 72A of the hood inner panel 72 as described above, there is a predetermined gap between the front end portion 70A of the hood outer panel 70 and the front end portion 72A of the hood inner panel 72. The void S is formed.

  A convex bead 80 as a convex portion protruding toward the stopper 13 and the actuator 16 is formed at a portion of the hood inner panel 72 facing the stopper 13 and the actuator 16 described in detail later in the vehicle vertical direction. . The front end surface in the protruding direction of the convex bead 80, that is, the lower surface of the convex bead 80 is a contacted surface 82 on which the stopper 13 and the actuator 16 abut. As shown in FIG. 4, the front side 82A of the abutted surface 82 is formed with a rectangular edge in a plan view of the vehicle, and the rear side 82B of the abutted surface 82 has an edge in a plan view of the vehicle. It is formed in a circular shape. The stopper 13 and the actuator 16 are in contact with the front side 82A and the rear side 82B of the contacted surface 82, respectively.

  As shown in FIG. 1, the rear end portion of the front hood 12 described above is rotatably supported by a pair of hood hinges 84 arranged on the left and right sides. A hood striker 22 is attached to an intermediate portion in the vehicle width direction at the front end portion of the front hood 12. The front hood 12 is held in the closed position by the hood striker 22 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. Twelve rotations are restricted.

  The hood striker 22 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 22 is the vehicle front-rear direction when the front hood 12 is closed. It is set as the latching | locking part 22A extended in this.

(Food lock device 14)
The hood lock device 14 includes a hood lock device main body 24 and a lock base 26 that supports the hood lock device main body 24.

  The hood lock device main body 24 is formed in a substantially rectangular shape when viewed from the front of the vehicle, and a locking recess 28 for locking the locking portion 22A of the hood striker 22 is formed on the upper portion of the hood lock device main body 24. Has been.

  In addition, a fixing pin 30 with which a fixing piece 19 constituting a main part of the fixing device 18 abuts is joined to the lower end portion of the hood lock device main body 24. Further, the hood lock device main body 24 includes a latch (not shown) that holds the locking portion 22A of the hood striker 22 at the end of the locking recess 28 in the depth direction. A support pin 32 is fixed to the right end of the hood lock device body 24 in the vehicle width direction.

  The lock base 26 is formed in a rectangular plate shape that extends in the vehicle width direction with the vehicle front-rear direction as the plate thickness direction. A circular base is formed at the right end of the lock base 26 in the vehicle width direction and on the vehicle upper side. Support holes are formed. The support pin 32 fixed to the hood lock device main body 24 is inserted into the support hole formed in the lock base 26, so that the hood lock device main body 24 is lifted from the closed position of the solid line to the lifted position (reference symbol D). It is possible to rotate within the range shown.

  As shown in FIG. 2, the hood lock device 14 described above is fixed to an intermediate portion of the upper member 66 of the radiator support 60 in the vehicle width direction.

(Stopper 13)
As shown in FIGS. 3 and 5, the stopper 13 is disposed below the front end portion of the front hood 12, and the stopper 13 is formed in the vehicle vertical direction using a viscoelastic material such as rubber. It is formed in a substantially columnar shape in the axial direction. Further, the upper end 13A of the stopper 13 is formed in a spherical shape, and the front end portion of the front hood 12 located at the closed position abuts on the upper end 13A of the stopper 13 so that the front end portion of the front hood 12 and the radiator are disposed. A clearance between the support 60 and the upper member 66 is secured.

  The stopper 13 described above is fixed to the upper member 66 of the radiator support 60 via the stopper bracket 86.

(Actuator 16)
As shown in FIGS. 1 and 2, the actuator 16 is provided on the right side and the left side of the hood lock device 14 in the vehicle width direction, respectively. As shown in FIG. 6, the actuator 16 includes a cylinder 34 that is formed in a cylindrical shape, and a rod 36 that is accommodated in the cylinder 34 and that extends toward the vehicle upper side with respect to the cylinder 34. It is configured. By extending the rod 36 with respect to the cylinder 34, the dimension of the actuator 16 in the vertical direction of the vehicle is increased.

  A micro gas generator 38 (hereinafter referred to as “MGG 38”) is attached to the lower end of the cylinder 34, and as a result, the lower end of the cylinder 34 is closed by the MGG 38. A support member 40 that supports a shaft portion 46 of a rod 36 described later is attached to the upper end portion of the cylinder 34. Since the clearance between the shaft portion 46 and the support member 40 is a predetermined clearance, the shaft portion 46 can slide along the support member 40.

  The rod 36 is attached to a shaft portion 46 formed in a rod shape whose longitudinal direction is the same as the longitudinal direction of the cylinder 34, a piston portion 48 provided at the lower end portion of the shaft portion 46, and an upper end portion of the shaft portion 46. A distal end portion 50. The piston portion 48 is formed in a cylindrical shape having a larger diameter than the outer diameter of the shaft portion 46, and the outer diameter of the piston portion 48 is slightly smaller than the inner diameter of the cylinder 34. Further, an O-ring 52 is interposed between the piston portion 48 and the cylinder 34, thereby sealing between the piston portion 48 and the cylinder 34. Then, when the MGG 38 is actuated to increase the pressure in the cylinder 34, the piston portion 48 moves together with the shaft portion 46 to the vehicle upper side.

  As shown in FIGS. 3 and 5, the actuator 16 described above is disposed on the vehicle rear side of the stopper 13 and is disposed adjacent to the stopper 13 in the front-rear direction and the upper member 66 of the radiator support 60. It is fixed to. In other words, the actuator 16 is disposed on the rear side of the stopper 13 in a state of being close to the stopper 13. Specifically, the distance D between the shaft center L1 of the stopper 13 and the shaft center L2 of the actuator 16 is made as short as possible in consideration of the dimensional tolerances of the stopper 13, the actuator 16, the upper member 66, and the stopper bracket 86. Is set to The upper member 66 has an opening 68 through which the rod 36 of the actuator 16 passes.

  Further, in a state where the actuator 16 is fixed to the upper member 66, the distal end portion 50 of the actuator 16 and the front hood 12 are separated from each other.

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

  As shown in FIG. 1, the hood lock device main body 24 is fixed to the closed position by the fixing device 18 before the actuator 16 is operated. The hood striker 22 attached to the front hood 12 is locked in the locking recess 28 of the hood lock device body 24, and the hood striker 22 is held in a state of being locked in the locking recess 28 by a latch (not shown). Thus, the front hood 12 is held in the closed position.

  Further, in this embodiment, when the actuator 16 is operated, the fixing device 18 releases the fixing of the hood lock device main body 24 by the fixing releasing device 20. Further, when the rod 16 moves upward with respect to the cylinder 34 by the operation of the actuator 16, the distal end portion 50 of the rod 36 contacts the front hood 12. Then, when the rod 36 further moves upward, the rod 36 lifts the front hood 12. Thereby, the front hood 12 moves from the closed position to the lifted position, that is, the front hood 12 pops up.

  Incidentally, as shown in FIG. 3, in a state where the front hood 12 is held at the closed position, the stopper 13 is in contact with the front end portion of the front hood 12, that is, the upper end 13A of the stopper 13 is the hood inner panel. 72 is in contact with the contacted surface 82 of the convex bead 80 formed in 72. That is, the displacement of the abutted surface 82 in the vehicle vertical direction is restricted by the stopper 13. Thereby, the clearance C between the actuator 16 disposed adjacent to the stopper 13 and the contacted surface 82 can be set small, that is, the empty space until the actuator 16 contacts the front hood 12. The running distance C can be shortened. As a result, the impact when the actuator 16 abuts against the front hood 12 is reduced, so that additional reinforcement of the front hood 12 at the portion where the actuator 16 abuts is unnecessary, and consequently the weight of the front hood 12 is increased. Can be suppressed.

  Further, in the present embodiment, the actuator 16 is disposed on the vehicle rear side of the stopper 13, that is, the actuator 16 is disposed on the hood hinge 84 (see FIG. 1) side with respect to the stopper 13, thereby opening and closing the front hood 12. Sometimes, the front hood 12 can be prevented from coming into contact with the actuator.

  Furthermore, in this embodiment, the convex bead 80 is formed at a portion where the stopper 13 and the actuator 16 abut on the hood inner panel 72, so that the stopper 13 and the actuator 16 can be connected to the hood inner panel 72 without providing an additional reinforcing member. The rigidity of the abutting portion can be improved.

  Further, as shown in FIG. 7, in this embodiment, the actuator 16 is disposed below the front end portion of the front hood 12, that is, the actuator 16 is connected to the front end portion 70 </ b> A of the hood outer panel 70 and the hood inner panel 72. It is arrange | positioned below the space | gap S formed between 72A of front-end parts. By arranging the actuator 16, energy absorption performance at the front end portion of the front hood 12 can be ensured without providing an energy absorption structure in the actuator 16 itself. It is to be noted that the impact tester 88 is in contact with the front hood 12.

  In the present embodiment, an example in which the convex bead 80 is formed in a portion where the stopper 13 and the actuator 16 abut on the hood inner panel 72 has been described, but the present invention is not limited to this. Whether or not the convex bead 80 is formed on the hood inner panel 72 may be appropriately set in consideration of the rigidity of the portion of the hood inner panel 72 where the stopper 13 and the actuator 16 abut. Further, in place of the convex bead 80, the thickness of the portion of the front hood 12 where the stopper 13 and the actuator 16 abut is set larger than the thickness of the peripheral portion thereof, so that the stopper 13 and the actuator in the front hood 12 are set. It is also possible to improve the strength and rigidity of the portion where 16 abuts.

  In the present embodiment, the example in which the actuator 16 is disposed on the vehicle rear side of the stopper 13 has been described. However, the present invention is not limited to this, and for example, the actuator 16 is disposed on the vehicle front side of the stopper 13 or in the vehicle width direction. It can also be set as the structure arrange | positioned on the right side or the vehicle width direction left side.

  Furthermore, in this embodiment, although the example which comprised the front hood 12 by integrating the hood outer panel 70 and the hood inner panel 72 was demonstrated, this invention is not limited to this, For example, fiber reinforced resin etc. The front hood can also be configured using

  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
13 Stopper
13A top
16 Actuator
70 Hood outer panel
72 Hood Inner Panel
80 Convex beads (convex part)
82 Contacted surface
84 Hood Hinge

Claims (4)

A front hood extending in the vehicle width direction and the vehicle front-rear direction at the front of the vehicle;
A stopper which is disposed on the lower side of the front hood and supports the front hood by an upper end contacting the front hood;
The front hood is disposed adjacent to the stopper on the lower side of the front hood and spaced apart from the front hood, and the front hood is lifted by contacting the front hood and lifting the front hood upward. An actuator to move from the closed position to the lifted position;
Pop-up hood device for vehicles equipped with. The rear end of the front hood is rotatably supported by a hood hinge,
The stopper supports the front end portion of the front hood by contacting the front end portion of the front hood,
The vehicle pop-up hood device according to claim 1, wherein the actuator is disposed on the vehicle rear side of the stopper. The front hood includes a hood outer panel disposed on the vehicle upper side and extending in the vehicle front-rear direction and the vehicle width direction, and a hood inner panel disposed on the vehicle lower side of the hood outer panel.
A portion of the hood inner panel that faces the stopper and the actuator in the vertical direction of the vehicle protrudes toward the stopper and the actuator, and a tip surface in the protruding direction contacts the stopper and the actuator. The vehicle pop-up hood device according to claim 1 or 2, wherein a convex portion which is a surface is formed.   The vehicle pop-up hood according to any one of claims 1 to 3, wherein a thickness of a portion of the front hood where the stopper and the actuator are in contact with each other is set larger than a thickness of a peripheral portion thereof. apparatus.