JP2009107496A - Hood flip-up device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hood flip-up device capable of preventing wetting of an actuator due to rain water from a cowl louver and making design better. <P>SOLUTION: In this hood flip-up device U, the actuator 31 having a cylinder 32 and a piston rod 33 is arranged on a lower side of a rear end 15c of a hood panel 15 of a vehicle. When an upper end 34a of the rising piston rod 33 is made to abut on a lower surface 21a side of a rear end of the hood panel 15 when performing an operation, the rear end 15c of the hood panel 15 is raised to extend a gap S with a lower cowl 8. An actuator cover 37 is disposed on an upper side of the actuator 31 before the operation. The cover 37 is disposed to connect from the cowl louver 10 on an upper part side of the cowl to an upper surface 37a side, and is provided with a passing opening 38 for passing the piston rod 33 when the piston rod 33 rises and a lid part 39 for closing the opening 38 to be pushed and opened by the piston rod 33. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a hood flip-up device used when a pedestrian is received by a hood panel with a rear end lifted when the pedestrian is in contact with a vehicle.

  Conventionally, in the hood flip-up device, the rear end side of the hood panel is raised so that a pedestrian can be received by the hood panel itself using energy absorption during plastic deformation of the hood panel (for example, (See Patent Documents 1 and 2).

  These hood panel raising actuators are configured as a piston-cylinder type that uses gas generated during the operation of the gas generator as a drive source so that it can operate quickly. The cylinder is filled with gas as fluid, the piston rod stored in the cylinder is raised, the upper end of the piston rod is brought into contact with the lower surface of the rear end of the hood panel, and the rear end of the hood panel is raised. It was. The piston rod has a structure in which a piston and a support rod that extends from the piston and can support the hood panel are integrated.

In addition, as the gas generator, a micro gas generator that ignites explosives or a gas generating agent by inputting an operation signal is used. In such a gas generator, a chemical reaction of explosive combustion gas or gas generating agent ( Gas generated by oxidation reaction / oxidation combustion reaction) is used as a gas for moving the piston rod.
JP 2002-29367 A JP 2003-191818 A

  However, in the conventional hood flip-up device, if the actuator that raises the hood panel is placed below the rear end of the hood panel and the hood panel is opened when checking the engine room, etc., the actuator cylinder and piston rod The upper end is exposed, the design is not good (look), and even when the hood panel is closed, rainwater that flows on the upper surface of the cowl louver located on the cowl drops on the actuator, causing the actuator to malfunction. There was a possibility of getting wet, and there was room for improvement.

  The present invention solves the above-described problems, and an object thereof is to provide a hood flip-up device that can prevent wetting of an actuator by rainwater from a cowl louver and can improve design.

In the hood flip-up device according to the present invention, an actuator having a cylinder and a piston rod disposed so as to protrude upward from the cylinder is disposed below the rear end of the hood panel of the vehicle,
During operation, the upper end of the piston rod is brought into contact with the lower surface of the rear end of the hood panel while raising the piston rod, and the rear end of the hood panel is raised so as to widen the gap between the lower cowl. A hood flip-up device,
Between the upper end of the piston rod before operation and the rear end of the hood panel, an actuator cover that covers at least the top of the actuator is disposed,
Actuator cover
The upper surface side is connected from the cowl louver disposed on the upper surface side of the cowl, and is disposed.
An opening for passing the piston rod so that the hood panel can be flipped up when the piston rod is raised, and a lid portion that closes the opening for opening so as to be able to be pushed open by the piston rod when raised,
It is characterized by comprising.

  In the hood flip-up device according to the present invention, when the piston rod of the actuator is raised during operation, the upper end of the piston rod pushes open the lid portion, passes through the opening for opening, and the lower surface of the rear end of the hood panel The rear end of the hood panel will be raised.

  In the state before the operation of the actuator, even if the hood panel is opened, the actuator cover is connected to the upper surface side from the cowl louver disposed on the upper surface side of the cowl and covers the upper side of the actuator. The cylinder and piston rod are not visible from above, and the design is good. Even if rainwater flows along the upper surface of the cowl louver, the actuator cover covers the upper side of the actuator, preventing the actuator from getting wet, and rainwater will be dripped onto other parts. .

  Therefore, in the hood flip-up device according to the present invention, the actuator can be prevented from being wetted by rainwater from the cowl louver and the design can be improved.

  And when the cowl louver is made of synthetic resin, if the actuator cover is formed by molding integrally with the cowl louver, the actuator cover can be composed of the cowl louver itself, and the actuator cover can be disposed without feeling uncomfortable with the cowl louver. Furthermore, the design property when the food panel is opened can be improved.

  Of course, if the above points are not taken into account, the actuator cover may be configured separately from the cowl louver.

  In addition, if the lid portion is provided with a thin portion to be broken by the piston rod at the time of ascending and is formed integrally with the peripheral portion of the passage opening, the upper surface of the entire actuator cover is provided. Since the sense of unity on the side is increased, the design can be improved.

  Of course, if the above points are not taken into account, the lid portion may be separately assembled from the peripheral portion of the passage opening and assembled to the actuator cover so that it can be opened.

  When the lid is integrated with the periphery of the passage opening or separate, in either case, the actuator cover is separated from the cowl louver or formed integrally with the cowl louver. Can be set.

  Furthermore, a case portion surrounding the actuator is formed around the actuator by forming at least a part thereof integrally with the actuator cover or as a separate body from the actuator cover, and the actuator is provided with a lid portion and a passage opening. By the peripheral edge and the case portion, wetting by rain water entering the engine room of the vehicle below the hood panel may be prevented and disposed.

  In such a configuration, the actuator cover can be covered with the lid portion of the actuator cover, the periphery of the opening for passage, and the case portion so that the actuator can be covered. Therefore, from the cowl louver, from the vehicle lower side to the engine room. Wetting due to invading rainwater can also be prevented, and further stable operation of the actuator can be ensured. If the number of parts where the case part is integrally formed with the actuator cover is increased, the number of components of the hood flip-up device is suppressed, and the periphery of the piston rod from the lower surface of the lid part to the upper part of the cylinder is separated from the actuator cover. The extending portion can be covered and foreign matter can be reliably prevented from entering between the lid portion and the piston rod.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 5, a hood flip-up device (hereinafter simply referred to as a flip-up device) U of the embodiment is mounted on a vehicle V. The flip-up device U has an actuator 31 disposed below the rear end 15c of the hood panel 15 at the upper end side from the cylinder 32 when operated. The projecting piston rod 33 is raised, and the rear end 15c of the hood panel 15 is flipped up.

  Note that the pedestrian protection device M includes a flip-up device U and an airbag device B having an airbag 25 that protects the pedestrian from the front pillar 4. Further, as shown in FIG. 1, a sensor 6 capable of detecting or predicting a collision with a pedestrian is disposed on the front bumper 5 of the vehicle V, and a signal from the sensor 6 is input. When the operation circuit that does not detect or predicts a collision with the pedestrian of the vehicle V based on the signal from the sensor 6, the inflator 26 (see FIGS. 4 and 5) of the airbag device B and the actuator of the flip-up device U A gas generator (not shown) as a drive source in 31 is operated.

  Further, in the present specification, the front and rear and up and down directions are based on the direction that coincides with the front and rear and up and down of the vehicle V, respectively, and the left and right directions are the left and right directions when the rear side is viewed from the front side of the vehicle V. Based on direction.

  As shown in FIGS. 1 to 5, the hood panel 15 is disposed so as to cover the upper part of the engine room ER in the vehicle V, and is a hinge portion 16 disposed in the vicinity of the rear end 15 c on both sides in the left-right direction. Thus, the vehicle 1 is connected to the body 1 of the vehicle V so that it can be opened and closed by opening it forward. The hood panel 15 is made of sheet metal made of aluminum (aluminum alloy) or the like, and includes an outer panel 15a on the upper surface side and an inner panel 15b that is positioned on the lower surface side and has higher strength than the outer panel 15a (see FIG. 4). The food panel 15 is plastically deformed so that the kinetic energy of the pedestrian can be absorbed when the pedestrian is received, and the hood panel 15 jumps when the vehicle V collides with the pedestrian so as to increase the amount of deformation. The actuator 31 of the raising device U is operated to secure a deformation space for the hood panel 15 above the engine room ER. At that time, in the embodiment, the rear end 15c is moved by the operation of the actuator 31 of the flip-up device U so that the hood panel 15 leaves a large gap S between the cowl 8 and the rear end 15c of the hood panel 15. Will be raised. Further, the gap S formed by the flip-up device U of the embodiment is also used as an opening for allowing the airbag 25 to easily protrude.

  The hinge portion 16 is disposed on the left edge 15d and the right edge 15e on the rear end 15c side of the hood panel 15 (see FIGS. 1 and 2), and as shown in FIGS. A hinge base 17 fixed to a mounting flange 2a connected to the ridgeline hose 2, a mounting bracket 20 fixed to the hood panel 15 side, and a hinge arm 19 connected to the hinge base 17 and the mounting bracket 20 It is prepared for. Each hinge arm 19 is configured as a shape in which a sheet metal angle member is curved in a substantially semicircular arc shape so as to protrude downward, and a base end 19 a on the hinge base 17 side is hinged using a support shaft 18. A tip 19b side that is rotatably connected to the base 17 and is separated from the base end 19a extends upward from the left and right edges 10c, 10d of the cowl louver 10 on the upper surface side of the cowl 8 (see FIG. 2). The mounting bracket 20 is coupled by welding or the like. The support shafts 18 are arranged with their axial directions along the left-right direction of the vehicle V. Therefore, when the hood panel 15 is opened, as shown by a two-dot chain line from the solid line in FIG. 4, the front end 15 f of the hood panel 15 along with the front end 19 b side of each hinge arm 19 with the left and right support shafts 18 as the rotation center. The side (see FIGS. 1 and 2) will be lifted with the front opening.

  The vicinity of the tip 19b of the hinge arm 19 is a plastic deformation portion 19c that plastically deforms when the rear end 15c of the hood panel 15 of the support rod 34 is pushed up when the actuator 31 is actuated (see FIG. 5). Incidentally, when the rear end 15c of the hood panel 15 is raised, the hood lock striker 22 is disposed on the front end 15f side of the hood panel 15 that is opened and closed by the front opening, and is disposed on the lower surface side of the front end 15f when normally closed. The front end 15 f side is not detached from the body 1 side by the latch mechanism 23, the secondary lever 24, or the like that stops.

  As shown in FIGS. 4 and 5, the airbag apparatus B includes an airbag 25, an inflator 26 that supplies inflation gas to the airbag 25, a case 27 that houses the airbag 25 and the inflator 26, and the airbag 25. And an air bag cover 28 that covers the case 27 that houses the inflator 26 so that the case 27 can be opened, and a mounting seat for the cowl 8 in the vicinity of the lower edge 15d and the right edge 15e of the rear end 15c of the hood panel 15. It is attached to 9b. When the flip-up device U is actuated to raise the rear end 15c of the hood panel 15, the airbag device B projects the airbag 25 from the gap S between the rear end 15c and the cowl 8. The inflator 26 is activated to supply inflation gas to the folded airbag 25. When the inflation gas flows in, the airbag 25 pushes and opens and expands the door 28a of the airbag cover 28 that covers the opening 27a on the rear side of the case 27, and the left and right front pillars 4, 4 Will be covered (see FIG. 1).

  As shown in FIGS. 4 and 5, the cowl 8 includes a highly rigid sheet metal cowl panel 9 on the body 1 side, and a cowl louver 10 formed of a synthetic resin such as polypropylene above the cowl panel 9. It is configured. The cowl louver 10 includes a large number of slits 10a for taking in air to the air conditioner (see FIG. 2), and the cowl panel 9 can supply air taken from the slits 10a of the cowl louver 10 to a predetermined air conditioner. An open box-shaped duct portion 9a is provided. The duct portion 9a is configured to flow rainwater that has entered from the slit 10a out of the vehicle from the vicinity of the left and right tire houses, and is configured to supply only air taken from the slit 10a to the predetermined air conditioner side. Yes. Further, on the front side of the cowl panel 9 near the left and right edges, mounting seats 9b for attaching the case 27 of the airbag apparatus B are disposed. And the airbag apparatus B inserts the attachment bolt 26a extended from the inflator 26 itself for attaching the inflator 26 and the airbag 25 with respect to the case 27 with respect to the attachment seat 9b, and fixes nut 26b. Attached.

  The cowl louver 10 is arranged so that the rear end 10b side is connected to the lower part 3a side of the front windshield 3 and extends forward from the lower part 3a to cover the upper side of the cowl panel 9. The cowl louver 10 is mounted and fixed by holding the rear end 10b side to the lower part 3a of the front windshield 3 and fastening the left and right edges 10c and 10d to members on the body 1 side such as the hood ridge reinhose 2 by bolting or the like. Is provided. In the case of the embodiment, the airbag cover 28 of the airbag apparatus B and the actuator cover 37 that covers the upper side of the left and right actuators 31 are formed integrally with the cowl louver 10. More specifically, the soft portion 10f in which the vicinity of the peripheral portion 37b of the lid portion 39 of the actuator cover 37 including the airbag cover 28 and the lid portion 39 is larger than the other general portion (or hard portion) 10e. As shown, a resin molded product (louver cover body) P composed of the cowl louver 10 and the actuator cover 37 is formed by two-color molding in which the hard portion 10e and the soft portion 10f are integrally molded (FIGS. 4 and 5). reference).

  In addition, in the vicinity of the lower part 3a of the front windshield 3 of the cowl louver 10, a rotating shaft (not shown) of the wipers 12 and 13 (see FIGS. 1 and 2) is penetrated.

  As shown in FIGS. 1 and 2, the flip-up device U is disposed near the lower portion of the left edge 15d and the right edge 15e on the left and right sides of the rear end 15c of the hood panel 15, and is shown in FIGS. As described above, the actuator 31, the receiving seat 21 disposed on the hood panel 15 side above the actuator 31 corresponding to each actuator 31, and the vicinity of the left and right edges 10 c and 10 d of the cowl louver 10, respectively, And an actuator cover 37 extending from the upper surface 10g side to the front side.

  As shown in FIGS. 1 and 2, each actuator 31 is disposed below the rear end 15c of the hood panel 15 in the vicinity of the left and right hinge portions 16 of the hood panel 15, and as shown in FIGS. Each of the cylinders 32 includes a cylindrical cylinder 32 and a piston rod 33 disposed in the cylinder 32. In the cylinder 32, when an operation signal is input, a predetermined medicine is ignited to explode. A gas generator (not shown) composed of a micro gas generator for generating combustion gas is provided. The piston rod 33 includes a support rod 34 that protrudes upward from the cylinder 32. When the actuator 31 operates, the gas generated by the gas generator in the cylinder 32 pushes up a piston (not shown) of the piston rod 33 in the cylinder 32, and the support rod 34 extending upward from the piston rises.

  In addition, each actuator 31 is fixedly attached to a mounting flange 2 b extending from the hood ridge rein hose 2 using a mounting bracket 30. In the embodiment, the mounting bracket 30 includes a cylindrical sleeve portion 30a for mounting and fixing the lower end side of the cylinder 32 using screws or the like (not shown), and a square plate-like base fixed to the mounting flange 2b with a screw 29. Part 30b.

  The receiving seat 21 is attached to a portion of the mounting bracket 20 disposed on the lower surface of the rear end 15 c of the hood panel 15, and the lower surface 21 a receives the head 34 a at the tip of the support rod 34 that moves up and down the actuator 31. It is configured to be possible.

  The left and right actuator covers 37 are symmetrical to each other with respect to the center in the left-right direction of the vehicle V, and are connected to the upper surface 37a side from the cowl louver 10 so as to cover the upper side of the left and right actuators 31, respectively. It is arrange | positioned so that it may extend ahead from edge 10c, 10d vicinity. Each actuator cover 37 has a passage opening 38 through which the support rod 34 of the piston rod 33 ascending the actuator 31 passes, and a lid portion 39 that closes the passage opening 38 so as to be able to be pushed open by the support rod 34 at the time of ascent. Are arranged. The lid portion 39 is formed in a disc shape, and has a thin portion to be broken 40 which is broken when pressed by the head 34a of the support rod 34, and a rotation when the lid portion 39 is opened without breaking. And a hinge portion 41 made of an integral hinge as a center. In the case of the embodiment, the hinge portion 41 is formed on the front edge side of the passage opening 38. The passage opening 38 is formed by opening the disk-shaped lid portion 39, so that the passage opening 38 is opened in a substantially circular shape and has a larger diameter than the head portion 34a so that the head portion 34a of the support rod 34 can be inserted. Has been.

  Furthermore, in the embodiment, on the lower surface side of each actuator cover 37 around each actuator 31, together with the periphery of the cover lid 39 and the passage opening 38, the waterproof has a waterproof property and can cover the periphery of the actuator. A case portion 43 is disposed so as to form the housing 48. The case part 43 is comprised from the upper case part 44 and the lower case part 45 so that the circumference | surroundings of the piston rod 33 and the cylinder 32 of the actuator 31 may be covered (refer FIG. 4).

  In the case of the embodiment, the upper case portion 44 is formed integrally with the actuator cover 37 and has a cylindrical shape extending downward from the periphery of the passage opening 38 so as to cover the upper end side of the sleeve portion 30 a of the mounting bracket 30. The sleeve portion 30a is inserted into the upper end. The lower case portion 45 is composed of the mounting bracket 30 and is composed of a sleeve portion 30 a that covers the outer peripheral surface of the lower end 32 a of the cylinder 32 and a base portion 30 b that covers the lower end surface of the cylinder 32.

  In other words, the waterproof housing 48 of the actuator according to the embodiment includes the lid portion 39 as a member on the actuator cover 37 side including the upper case portion 44 of the case portion 43, the periphery of the passage opening 38, and the upper case portion 44. It can be said that it is comprised from the upper housing 49 which consists of, and the lower housing 50 which consists of the attachment bracket 30 (refer FIG. 5).

  In the pedestrian protection apparatus M according to this embodiment, when an operation circuit (not shown) detects or predicts a collision with the pedestrian of the vehicle V based on a signal from the sensor 6, the cylinder of the actuator 31 of each flip-up apparatus U is used. A gas generator (not shown) in 32 is operated and the inflator 26 of the airbag apparatus B is operated.

  When a gas generator (not shown) of the actuator 31 is operated, the generated gas pushes up the piston rod 33 of the cylinder 32 as shown in FIGS. At that time, the head portion 34a at the upper end of the support rod 34 pushes up the lid portion 39 of the actuator cover 37, and causes the fracture portion 40 to break, so that the lid portion 39 is rotated forward with the hinge portion 41 as the rotation center. Push to open. Further, the head portion 34a of the support rod 34 is inserted through the open passage opening 38 from the lower side to the upper side, comes into contact with the receiving seat 21, raises the rear end 15c of the hood panel 15, and moves toward the rear end 15c. In addition, a gap S is formed between the hood panel 15 and the cowl 8. Further, since the inflator 26 of the airbag apparatus B is also operated, the airbag 25 that is folded and stored as shown in the two-dot chain line in FIGS. 1 and 3 and the gas from the inflator 26 flows in. Then, the door portion 28a of the airbag cover 28 is pushed open and protrudes from the case 27, and further expands so as to protrude above the front windshield 3 through the gap S. The airbag 25 that has been inflated covers the front side of the front pillar 4.

  At that time, if the hood panel 15 receives a pedestrian, the hood panel 15 can be plastically deformed to absorb the kinetic energy of the pedestrian, relieve the impact and receive the pedestrian. Even if the pedestrian slides on the hood panel 15 to the 4th side, the pedestrian is protected with good cushioning properties by the airbag 25 that has been inflated.

  In the flip-up device U according to the embodiment, in the state before the operation of the actuator 31, even if the hood panel 15 is opened, the actuator cover 37 is connected to the upper surface 37a side from the cowl louver 10 disposed on the upper surface side of the cowl. Since the upper part of the actuator 31 is covered, the cylinder 32 and the piston rod 33 of the actuator 31 are coupled with an engine room cover that covers an engine (not shown) in the engine room ER from the upper side. It is not visible and the design is good. Even if rainwater flows on the upper surface 10g side of the cowl louver 10, the actuator cover 37 covers the upper side of the actuator 31 to prevent the actuator 31 from getting wet, and rainwater drops on other parts. Will be.

  Therefore, in the flip-up device U of the embodiment, the actuator 31 can be prevented from being wetted by rainwater from the cowl louver 10 and the design can be improved.

  In the case of the embodiment, the cowl louver 10 is made of a synthetic resin such as polypropylene, and the actuator cover 37 is formed integrally with the cowl louver 10, and is configured by the cowl louver 10 itself, and can be disposed without a sense of incongruity with the cowl louver 10. Furthermore, the design property when the food panel 15 is opened can be improved.

  Of course, if the above points are not taken into account, the actuator cover 37 may be configured separately from the cowl louver 10.

  Further, in the embodiment, the lid portion 39 is also formed integrally with the peripheral portion 37b of the periphery of the passage opening 38 by providing a thin portion to be broken 40 that can be broken by the piston rod 33 when ascending. Since it is arranged and a sense of unity on the upper surface 37a side of the entire actuator cover 37 is increased, design properties can be improved.

  The passage opening 38 is arranged so that a part of the passage opening 38 is connected to the front edge and the left and right edges of the actuator cover 37 when the lid 39 is opened, even if the entire periphery is not surrounded by the peripheral portion 37b. You may let them.

  Further, in the embodiment, the passage opening 38 is configured to be closed by the single lid portion 39. However, the passage opening 38 may be composed of two or three lid portions or a larger number of open lid portions. The opening 38 may be closed. For example, like the actuator cover 37A shown in FIGS. 6 and 7, the fractured portion 40A is arranged radially from the center of the passage opening 38A, and the passage opening 38A is closed by a large number of triangular plate-shaped lid portions 39A. You may comprise. Even in this case, if the actuator 31 is actuated and the piston rod 33 is raised, the head 34a of the support rod 34 breaks the planned fracture portion 40A and pushes and opens a large number of triangular plate-shaped lid portions 39A. The rear end 15c of the hood panel 15 is pushed up by coming into contact with the lower surface 21a of the receiving seat 21.

  Of course, if the above points are not taken into account, the lid portion may be separately assembled from the peripheral portion of the passage opening and assembled to the cover so as to be openable. For example, like the actuator cover 37B shown in FIGS. 8 and 9, the lid portion 39B is assembled separately from the peripheral portion 37b of the passage opening 38B so as to be fitted to the inner peripheral surface 38a of the passage opening 38B. When the piston rod 33 is lifted, the cover rod 39B is separated from the passage opening 38B while the head portion 34a of the support rod 34 is fitted in the recess 39a on the lower surface side, and the rising support rod 34 is interposed via the cover portion 39B. The rear end 15c of the hood panel 15 may be pushed up by contacting the lower surface 21a of the receiving seat 21.

  When the lid is formed separately from the periphery of the passage opening, the lid and the periphery of the passage opening are separately connected with a belt-like flexible belt, As the hinge portion, a separate lid portion may be assembled to the periphery of the passage opening.

  When the lid is integrated with the periphery of the passage opening or separate, in either case, the actuator cover is separated from the cowl louver or formed integrally with the cowl louver. Can be set.

  Further, in the case of the embodiment, a case portion 43 surrounding the actuator 31 is formed integrally with the actuator cover 37 and disposed around the actuator 31, and the lid portion 39, the peripheral portion 37 b of the passage opening 38, And the waterproof housing 48 which can prevent the invasion of the rainwater to the actuator 31 from the case part 43 is comprised.

  In such a configuration, since the waterproof housing 48 including the lid portion 39 of the actuator cover 37 and the peripheral portion 37b of the passage opening 38 and the case portion 43 can enhance the waterproof property and cover the actuator 31, the cowl louver. In addition to 10, wetting by rainwater entering the engine room ER from the lower side of the vehicle can also be prevented, and further stable operation of the actuator 31 can be ensured. And if the case part 43 increases the site | part (upper case part 44) shape | molded integrally with the actuator cover 37 like embodiment, the number of components of the flip-up apparatus U will be restrained and the cover part 39 will be suppressed. The periphery of the support rod 34 of the piston rod 33 from the lower surface of the cylinder 32 to the upper portion 32b of the cylinder 32 can be covered with the upper case portion 44 extending from the actuator cover 37, and between the lid portion 39 and the piston rod 33 can be covered. It is also possible to reliably prevent foreign substances from entering.

  Of course, although the number of parts is increased, as shown in FIG. 10, as an upper case portion 44C of the case portion 43C extending downward from the peripheral portion 37b of the lid portion 39 in the actuator cover 37C, as shown in FIG. The waterproof housing 48C may be configured using the lower sleeve portion 45 and the sleeve 46 (upper case portion 44C) using the cylindrical sleeve 46. The waterproof housing 48C includes an upper housing portion 44C including an upper case portion 44C, a lid portion 39 of the actuator cover 37C, and a peripheral portion 37b of the passage opening 38, and a lower housing 50C including a base portion 30b of the mounting bracket 30. It will be composed of.

  In the actuator 31 of the embodiment, a piston cylinder type is illustrated in which a gas generator that generates gas by being ignited when an operation signal is input is disposed inside the cylinder 32. As a drive source for moving the oil, water, oil, air or the like may be used as the working fluid, and the water pressure, hydraulic pressure, air pressure, or the like may be used.

It is a schematic perspective view of the vehicle carrying the hood flip-up device of the embodiment of the present invention. It is a schematic perspective view of the state which opened the food panel of vehicles of an embodiment. It is an enlarged partial top view of the vehicle carrying the flip-up device of the embodiment. It is a schematic longitudinal cross-sectional view along the vehicle front-back direction to the flip-up apparatus of embodiment, and respond | corresponds to the IV-IV site | part of FIG. It is a schematic longitudinal cross-sectional view which shows the time of the action | operation of the flip-up apparatus of embodiment. It is an expanded partial top view of the state which excluded the food panel in the vehicle carrying the flip-up apparatus of the modification of embodiment. It is a schematic longitudinal cross-sectional view before and after the operation | movement of the flip-up apparatus shown in FIG. It is an expanded partial top view of the state which excluded the food panel in the vehicle carrying the flip-up apparatus of the modification of embodiment. It is a schematic longitudinal cross-sectional view before and after the operation | movement of the flip-up apparatus shown in FIG. It is a schematic longitudinal cross-sectional view which shows the flip-up apparatus of the other modification of embodiment.

Explanation of symbols

8 ... Cowl,
10 ... Cowl Luba,
15 ... food panel,
15c ... rear end (of food panel),
31 ... Actuator,
32 ... cylinder,
33 ... Piston rod,
37, 37A, 37B ... Actuator cover,
38, 38A, 38B ... passing openings,
39, 39A, 39B ... the lid,
40, 40A ... planned fracture part,
43, 43C ... case part,
U ... Hood jumping device.

Claims (5)

An actuator having a cylinder and a piston rod disposed so as to protrude upward from the cylinder is disposed below the rear end of the hood panel of the vehicle,
During operation, the upper end of the piston rod is brought into contact with the lower surface side of the rear end of the hood panel while raising the piston rod, so that the rear end of the hood panel is widened with the lower cowl. And a hood flip-up device for raising the hood,
Between the upper end of the piston rod before operation and the rear end of the hood panel, an actuator cover that covers at least the top of the actuator is disposed,
The actuator cover is
The upper surface side is connected from the cowl louver disposed on the upper surface side of the cowl, and is disposed.
A passage opening that allows the piston rod to pass therethrough so that the hood panel can be flipped up when the piston rod is lifted; and a lid that closes the passage opening so that it can be pushed open by the piston rod when lifted;
A hood flip-up device, comprising: The cowl louver is made of synthetic resin,
The hood flip-up device according to claim 1, wherein the actuator cover is formed integrally with the cowl louver.   The lid portion is provided with a thin portion to be broken that can be broken by the piston rod at the time of ascent, and is formed integrally with a peripheral portion of the passage opening. The hood flip-up device according to claim 1 or 2.   The said cover part is assembled | attached with respect to the said actuator cover so that opening is possible separately from the site | part of the periphery of the said opening for passage, The arrangement | positioning of Claim 1 or Claim 2 characterized by the above-mentioned. Hood jumping device. A case portion surrounding the actuator is formed at least partially integrally with the actuator cover, or disposed around the actuator as a separate body from the actuator cover,
The actuator is disposed so as to be prevented from being wetted by rainwater entering the engine room of the vehicle below the hood panel by the lid, the periphery of the passage opening, and the case. The hood flip-up device according to any one of claims 1 to 4, characterized in that:

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