JP2015131539A - Vehicular pop-up hood device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a vehicular pop-up hood device which secures a height at which a hood is brought up and concurrently inhibits increase in an operation amount of an actuator.SOLUTION: A vehicular pop-up hood device 10 includes: a hinge upper 20 fixed to the rear end side of a hood 12; a hinge base 22 fixed to a vehicle body; and a hinge arm 24 where one end part is rotatably connected with the hinge upper 20 and the other end part is rotatably connected with the hinge base 22. An actuator 26, which extends to the vehicle oblique rear side thereby rotating the hinge upper 20 relative to the hinge arm 24 and bringing up the rear end side of the hood 12 to the vehicle upper side, is provided between the hinge upper 20 and the hinge arm 24. Further, when the actuator 26 operates to rotate the hinge upper 20 relative to the hinge arm 24, the hinge base 22 may move to the vehicle front side relative to one end part of the hinge arm 24.

Description

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

  Patent Document 1 listed below discloses a vehicle pop-up hood apparatus in which the rear end side of the hood is lifted to ensure a deformation allowance on the rear end side of the hood. The vehicle pop-up hood apparatus described in this document includes a hinge upper (first hinge member) fixed to the rear end side of the hood, a hinge base (second hinge member) fixed to the vehicle body, one end, and the like. A hinge arm (swinging member) whose ends are rotatably connected to the hinge upper and the hinge base, respectively. An actuator (piston cylinder unit) is disposed between the hinge upper and the hinge arm, and the rear end of the hood can be lifted by operating the actuator.

Japanese Patent No. 4887512

  However, the vehicle pop-up hood device described in Patent Document 1 is configured to lift the rear end side of the hood while moving the hood toward the rear of the vehicle when the actuator is operated. On the other hand, the lift amount of the hood is reduced. For this reason, in the vehicle pop-up hood device described in Patent Document 1, it is necessary to set the operating amount of the actuator in anticipation of a decrease in the lifting amount of the hood.

  An object of the present invention is to obtain a pop-up hood device for a vehicle that can suppress an increase in the operation amount of an actuator while securing a lifting amount of the hood in consideration of the above facts.

  The vehicle pop-up hood device according to claim 1 is arranged at a front portion of the vehicle and is fixed to a rear end side of the hood extending in the vehicle front-rear direction and the vehicle width direction, a hinge base fixed to the vehicle body, One end is pivotally connected to the hinge upper and the other end is pivotally connected to the hinge base. The hinge arm is provided between the hinge upper and the hinge arm. An actuator that extends to the front side or obliquely rearward of the vehicle to rotate the hinge upper with respect to the hinge arm and lift the rear end side of the hood toward the vehicle upper side, and the actuator operates. When the hinge upper is rotated with respect to the hinge arm, the hinge base is in front of the vehicle with respect to one end of the hinge arm. It is movable in the side.

  According to the vehicle pop-up hood apparatus of the first aspect, the hood can be moved from the closed position to the open position by rotating the hinge arm with respect to the hinge base. In addition, when the actuator is operated in a state where the hood is in the closed position, that is, when the actuator extends obliquely forward or obliquely rearward of the vehicle, the hinge upper rotates with respect to the hinge arm. Thereby, the rear end side of the hood is lifted toward the vehicle upper side, that is, the hood pops up. Here, in the pop-up hood device for a vehicle, when the actuator is operated and the hinge upper is rotated with respect to the hinge arm, the hinge base moves to the vehicle front side with respect to one end of the hinge arm. Thereby, the change in the inclination angle of the actuator before and after the operation of the actuator is reduced, and the change in the length of the actuator can be effectively used for lifting the hood. Further, in the configuration in which the actuator extends toward the front side of the vehicle, the hood can be positively moved to the front side of the vehicle, and thus the amount of lift of the hood caused by the retraction of the hood when the actuator is operated. Reduction can be more reliably suppressed.

  The vehicle pop-up hood apparatus according to claim 2 is the vehicle pop-up hood apparatus according to claim 1, wherein the hinge upper and the hinge arm are a pin hole formed in the hinge upper and a pin formed in the hinge arm. It is connected via a connecting pin inserted through the hole, and either the pin hole formed in the hinge upper or the pin hole formed in the hinge arm is formed in a long hole shape in the vehicle front-rear direction.

  According to the pop-up hood device for a vehicle according to claim 2, when the hinge upper is rotated with respect to the hinge arm by moving in the pin hole in which the connecting pin is formed in a long hole shape, the hinge base is moved. It can be moved to the vehicle front side with respect to one end of the hinge arm.

  The vehicle pop-up hood device according to claim 3 is the vehicle pop-up hood device according to claim 2, wherein the connecting pin is a long hole in either of the hinge upper and the hinge arm when the hood is lifted. A holding portion for holding the pin hole in a predetermined position in the pin hole is provided.

  According to the pop-up hood device for a vehicle according to claim 3, the posture of the hood is obtained by holding the connecting pin at a predetermined position in the pin hole formed in a long hole shape in a state where the hood is popping up. Can be stabilized.

  The pop-up hood device for a vehicle according to the first to third aspects of the present invention has an excellent effect that an increase in the operation amount of the actuator can be suppressed while securing a lift amount of the hood.

It is a side view which shows the pop-up mechanism part arrange | positioned at the vehicle right side. It is a top view which shows the whole structure of the pop-up hood apparatus for vehicles which concerns on this embodiment. It is a side view corresponding to FIG. 1 which shows the pop-up mechanism part in the state which the actuator act | operated. FIG. 4 is a side view schematically showing a front portion of a vehicle cut along line 4-4 shown in FIG. 2. It is a side view corresponding to FIG. 3 which shows the pop-up mechanism part which concerns on the 1st modification in the state which the actuator act | operated. It is a side view corresponding to FIG. 3 which shows the pop-up mechanism part which concerns on the 2nd modification in the state which the actuator act | operated. It is a side view corresponding to FIG. 1 which shows the pop-up mechanism part which concerns on a 3rd modification. It is a side view corresponding to FIG. 7 which shows the pop-up mechanism part which concerns on the 2nd modification in the state which the actuator act | operated.

  A vehicle pop-up hood apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. 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. 2, the vehicle pop-up hood apparatus 10 according to the present embodiment includes a pair of left and right pop-up mechanism portions 14 disposed on both sides on the rear end side of the hood 12 as main parts. . Hereinafter, the schematic configuration of the hood 12 will be described first, and then the detailed configuration of the pop-up mechanism unit 14 will be described. Since the left and right pop-up mechanism sections 14 are both symmetrically configured, the following description will explain the configuration of the pop-up mechanism section 14 disposed on the right side of the vehicle, and the pop-up mechanism section 14 disposed on the left side of the vehicle. The description of the configuration is omitted.

(Food 12)
The 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 hood 12 covers a power unit room in which a power unit (not shown) is accommodated from above the vehicle. Yes. Further, the rear end portion of the hood 12 is rotatably supported by a pair of hinge arms 24 and the like (see FIG. 1) constituting the pop-up mechanism portion 14. A hood striker 16 is fixed to an intermediate portion of the front end portion of the hood 12 in the vehicle width direction. The hood 12 is held in the closed position by the hood striker 16 being locked to a single hood lock device 18 disposed in the vehicle width direction intermediate portion at the front end of the vehicle body. The rotation is restricted.

(Pop-up mechanism 14)
As shown in FIG. 1, the pop-up mechanism portion 14 is connected to a hinge upper 20 fixed to the rear end side of the hood 12, a hinge base 22 fixed to the vehicle body, and one end portion rotatably connected to the hinge upper 20. And a hinge arm 24 whose other end is rotatably connected to the hinge base 22. Further, the pop-up mechanism unit 14 includes an actuator 26 that rotates the hinge upper 20 with respect to the hinge arm 24 when the pop-up mechanism unit 14 extends.

  The hinge upper 20 is formed by pressing or the like on a steel plate material. The hinge upper 20 has a longitudinal direction in the vehicle front-rear direction and a substantially L-shaped cross section when viewed from the front of the vehicle. Specifically, the hinge upper 20 includes a fixed portion 28 that extends in the vehicle front-rear direction with the vehicle vertical direction as the plate thickness direction, and a base wall portion 30 that extends from the outer end of the fixed portion 28 toward the vehicle lower side. It is equipped with. A bolt (not shown) is inserted into the fixing portion 28, and the hinge upper 20 is fixed to the rear end of the hood 12 by being screwed into a weld nut (not shown) joined to the rear end of the hood 12. Has been. In addition, one end of an actuator 26, which will be described in detail later, is rotatably connected to the rear end of the base wall 30. The front and rear direction of the base wall 30 is the longitudinal direction of the vehicle. A pin hole 34 into which the connecting pin 32 is inserted is formed in the shape of a long hole. The inner diameter in the short direction of the pin hole 34 is slightly larger than the outer diameter of the connecting pin 32, and the inner diameter in the longitudinal direction of the pin hole 34 is larger than the outer diameter of the connecting pin 32. It is said that.

  The hinge base 22 is formed by subjecting a steel plate material to press work or the like, similar to the hinge upper 20, and the hinge base 22 has a longitudinal direction in the vehicle front-rear direction and a substantially L-shape in front view of the vehicle. The cross section is formed. Specifically, the hinge base 22 has a fixed portion 36 extending in the vehicle front-rear direction with the vehicle vertical direction as the plate thickness direction, and a vertical wall portion 38 extending from the inner end in the vehicle width direction of the fixed portion 36 toward the vehicle upper side. And. A bolt (not shown) is inserted into the fixing portion 36, and the hinge base 22 is fixed to the vehicle body by being screwed into a weld nut (not shown) joined to an apron upper member (not shown).

  The hinge arm 24 is formed by subjecting a steel plate material to press work or the like in the same manner as the hinge upper 20 and the hinge base 22, and the hinge arm 24 is formed in a substantially triangular shape in a vehicle side view. . The end portion of the hinge base 22 on the vehicle lower side is a flange portion 40 that is bent inward in the vehicle width direction. Further, the rear end portion of the hinge arm 24 is rotatably connected to the rear end portion of the vertical wall portion 38 of the hinge base 22. Further, the other end of an actuator 26 described later is rotatably connected to the lower end of the hinge arm 24.

  A circular pin hole 42 through which the connection pin 32 is inserted is formed at the front end of the hinge arm 24. The inner diameter of the pin hole 42 is slightly larger than the outer diameter of the connecting pin 32. The connecting pin 32 is inserted into the pin hole 42 formed in the front end portion of the hinge arm 24 and the pin hole 34 formed in the base wall portion 30 of the hinge upper 20, so that the front end portion of the hinge arm 24 rotates to the hinge upper 20. It is linked movably. The pin hole 34 formed in the front end portion of the hinge upper 20 is formed in a long hole shape whose longitudinal direction is the vehicle front-rear direction, so that the hinge base 22 is connected to the hinge arm 24 when the actuator 26 described later is operated. It is possible to move forward of the vehicle with respect to the front end.

  The actuator 26 includes a cylinder portion 44 formed in a bottomed cylindrical shape, and a rod portion 46 formed in a rod shape and inserted into the cylinder portion 44. The gas generating agent provided in the cylinder portion 44 burns, and the rod portion 46 moves to one side in the axial direction with respect to the cylinder portion 44, whereby the longitudinal dimension of the actuator 26 is extended. . The rod portion 46 and the cylinder portion 44 are provided with a stopper portion (not shown) so that the actuator 26 does not extend beyond a predetermined dimension and the actuator 26 extended to a predetermined dimension is provided. It does not shrink.

  The distal end portion of the rod portion 46 is rotatably connected to the rear end portion of the base wall portion 30 of the hinge upper 20, and the closed end side of the cylinder portion 44 is connected to the lower end portion of the hinge arm 24 via the bracket 48. It is connected to the pivotable. Accordingly, the actuator 26 is attached to the hinge upper 20 and the hinge arm 24. Further, in a state where the actuator 26 is attached to the hinge upper 20 and the hinge arm 24, the upper end portion of the actuator 26 is located on the vehicle rear side compared to the lower end portion of the actuator 26. By adopting the mounting posture of the actuator 26, the actuator 26 can be extended toward the oblique rear side of the vehicle.

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

  As shown in FIG. 2, according to the vehicle pop-up hood apparatus 10 of the present embodiment, the hood 12 is moved from the closed position to the open position by rotating the hinge arm 24 relative to the hinge base 22. Can be made.

  Further, when a vehicle equipped with the vehicle pop-up hood device 10 of the present embodiment is running, the actuator 26 is activated when it is detected that a pedestrian or the like has collided with the front portion of the vehicle. Further, when the actuator 26 is extended by operating the actuator 26, the hinge upper 20 is rotated with respect to the hinge arm 24 as shown in FIG. Thereby, as shown in FIG. 4, the rear end side of the hood 12 is lifted toward the vehicle upper side, that is, the hood 12 pops up.

  As shown in FIG. 3, in the pop-up hood device 10 for the vehicle, when the actuator 26 is operated and the hinge upper 20 is rotated with respect to the hinge arm 24, the inside of the pin hole 34 formed in the hinge upper 20 is passed. The connecting pin 32 moves. That is, the hinge base 22 moves to the vehicle front side with respect to the front end portion of the hinge arm 24. As a result, the change in the inclination angle of the actuator 26 before and after the operation of the actuator 26 is reduced, and the change in the length of the actuator 26 can be effectively used for lifting the hood 12. That is, in the present embodiment, an increase in the operation amount of the actuator 26 can be suppressed while securing the lifting amount of the hood 12.

  In this embodiment, an example in which the pop-up mechanism unit 14 is configured using an actuator 26 of a type in which the rod part 46 moves to one side in the axial direction with respect to the cylinder part 44 as the internal gas pressure rises will be described. However, the present invention is not limited to this. For example, the pop-up mechanism 14 can be configured by using an actuator of a type in which the rod part moves to the one side in the axial direction with respect to the cylinder part by extension of the compression coil sprink arranged in the cylinder part.

  Further, in the present embodiment, the pin hole 34 formed in the front end portion of the hinge upper 20 is formed in a long hole shape having the longitudinal direction in the vehicle front-rear direction, whereby the hinge base 22 is formed in the front end portion of the hinge arm 24. On the other hand, although the example comprised so that movement to the vehicle front side was demonstrated, this invention is not limited to this. For example, the pin hole formed in the front end portion of the hinge upper 20 is formed in a circular shape corresponding to the outer diameter of the connecting pin 32, and the portion on the rear side of the pin hole 34 in the base wall portion 30 of the hinge upper 20 is made thin. By doing so, the hinge base 22 can be configured to be movable forward of the vehicle with respect to the front end portion of the hinge arm 24. According to this configuration, the connecting pin 32 deforms the rear side portion of the pin hole 34 in the base wall portion 30 of the hinge upper 20, whereby the hinge base 22 moves to the vehicle front side with respect to the front end portion of the hinge arm 24. To do.

  Moreover, although this embodiment has demonstrated the example which formed the pin hole 34 formed in the front-end part of the hinge upper 20 in the shape of a long hole which makes a vehicle front-back direction a longitudinal direction, this invention is limited to this. is not. For example, the pin hole formed in the front end portion of the hinge upper 20 is formed in a circular shape corresponding to the outer diameter of the connecting pin 32, and the pin hole formed in the front end portion of the hinge arm 24 is defined as the longitudinal direction in the vehicle longitudinal direction. It can also be set as the structure formed in the shape of a long hole to do.

(Pop-up mechanism section according to first and second modifications)
Next, pop-up mechanism portions 50 and 52 according to the first and second modified examples of the embodiment will be described with reference to FIGS. 5 and 6. 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 FIG. 5, the pop-up mechanism 50 according to the first modified example holds the connecting pin 32 at the rear end of the pin hole 34 formed in the hinge upper 20 in a state where the hood 12 is popping up. It is characterized in that a pair of protrusions 54 are provided. The pair of protrusions 54 are disposed at the intermediate portion in the longitudinal direction of the pin hole 34 so as to face the short direction of the pin hole 34. Further, the distance between one protrusion 54 and the other protrusion 54 is set to be shorter than the outer diameter of the connecting pin 32. The connection pin 32 is held at the rear end portion of the pin hole 34 formed in the hinge upper 20 by the contact of the connection pin 32 with the pair of protrusions 54. The connecting pin 32 moves over the pair of protruding portions 54, that is, the connecting pin 32 elastically deforms or plastically deforms the peripheral portion of the protruding portion 54 and the pin hole 34, thereby causing the connecting pin 32 to move backward from the front end portion of the pin hole 34. It moves to the end.

  According to the pop-up mechanism unit 50 according to the first modification described above, the posture of the pop-up hood 12 can be stabilized.

  Further, even in a configuration in which a single protrusion 54 is provided on the upper edge of the pin hole 34 as in the pop-up mechanism 52 according to the second modification shown in FIG. The same effect as the mechanism part 50 can be obtained. Further, in the configuration in which the long hole-shaped pin hole 34 is formed at the front end portion of the base wall portion 30, the connecting pin 32 is in sliding contact with the lower edge portion of the pin hole 34 when the actuator 26 is operated. Therefore, the connection pin 32 can be smoothly moved in the pin hole 34 by providing the protrusion 54 at the upper edge of the pin hole 34. In the configuration in which the long hole pin hole is formed in the front end portion of the hinge arm 24, the connecting pin 32 is in sliding contact with the upper edge portion of the long hole pin hole when the actuator 26 is operated. Therefore, in the said structure, the connection part 32 can be smoothly moved in a pin hole by setting it as the structure which provided the projection part 54 in the lower edge part of the pin hole.

(Pop-up mechanism according to the third modification)
Next, a pop-up mechanism unit 56 according to a third modification of the above embodiment will be described with reference to FIGS. In addition, about the member and part which have the same function as the said embodiment etc., the code | symbol same as the said embodiment is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 7, the pop-up mechanism unit 56 according to this modification has the upper end of the actuator 26 compared to the lower end of the actuator 26 in a state where the actuator 26 is attached to the hinge upper 20 and the hinge arm 24. It is characterized by being located on the front side of the vehicle. By adopting the mounting posture of the actuator 26, the actuator 26 can be extended toward the obliquely forward side of the vehicle.

  According to the pop-up mechanism portion 56 according to the third modified example, the actuator 26 is configured to extend toward the front side of the vehicle, so that the hood 12 is positively moved toward the front side of the vehicle when the actuator 26 is operated. Can be moved to. Thereby, the lift amount of the hood 12 by the operation of the actuator 26 can be positively increased.

  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 Food
20 Hinge upper
22 Hinge base
24 Hinge arm
26 Actuator
32 Connecting pin
34 pin hole
42 pin holes
54 Protruding part (holding part)

Claims (3)

A hinge upper disposed at the front of the vehicle and fixed to the rear end side of the hood extending in the vehicle longitudinal direction and the vehicle width direction;
A hinge base fixed to the vehicle body,
A hinge arm having one end rotatably connected to the hinge upper and the other end rotatably connected to the hinge base;
The hinge upper is provided between the hinge upper and the hinge arm and extends toward the vehicle oblique front side or the vehicle oblique rear side to rotate the hinge upper with respect to the hinge arm so that the rear end side of the hood is on the vehicle upper side. An actuator that lifts toward
With
A pop-up hood device for a vehicle configured such that, when the actuator is operated and the hinge upper is rotated with respect to the hinge arm, the hinge base is movable to the vehicle front side with respect to one end of the hinge arm. . The hinge upper and the hinge arm are connected via a pin hole formed in the hinge upper and a connecting pin inserted through the pin hole formed in the hinge arm,
2. The vehicle pop-up hood device according to claim 1, wherein any one of a pin hole formed in the hinge upper and a pin hole formed in the hinge arm is formed in a long hole shape in the vehicle front-rear direction.   One of the hinge upper and the hinge arm is provided with a holding portion for holding the connecting pin at a predetermined position in the pin hole formed in a long hole shape when the hood is lifted. Item 3. The vehicle pop-up hood device according to Item 2.

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