JP4107103B2 - Lift up hood - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lift-up hood, and more particularly to a lift-up hood that lifts the front portion of the hood for pedestrian protection.
[0002]
[Prior art]
Conventionally, in a mechanism that lifts the front part of the hood of a vehicle for protecting a pedestrian, when a collision between the vehicle and the pedestrian is detected, the hood lock mechanism and the striker are disengaged, and the hood jumping means A configuration in which the front portion of the hood is flipped up by a predetermined lift amount is known (for example, see Patent Document 1).
[0003]
In addition, there exists patent document 2 as a related patent document.
[0004]
[Patent Document 1]
JP 2002-79906 A
[Patent Document 2]
JP 2000-219094 A
[0005]
[Problems to be solved by the invention]
However, in Patent Document 1, the spring-up means for lifting the hood front part is a spring constituting a hood lock mechanism. For this reason, it is necessary to set the spring force to a predetermined value or less that does not hinder normal hood opening / closing operations, particularly hood closing operations. On the other hand, in pedestrian protection, it is necessary to complete the lifting of the front part of the hood, that is, lift-up, in a short time after detecting a collision between the vehicle and the pedestrian. For this purpose, the spring force is increased. Therefore, it is necessary to increase the moving speed of the front portion of the hood or shorten the collision detection time by the sensor. As a result, in Patent Document 1, in consideration of the hood opening / closing operation, the spring force cannot be increased so much, so the movement speed of the front portion of the hood is slow, and it is necessary to use a sensor with a short collision detection time, Sensors that can be used are limited, leading to an increase in sensor cost.
[0006]
An object of the present invention is to obtain a lift-up hood that can increase the moving speed of the front portion of the hood at the time of a vehicle collision without increasing the spring force constituting the hood lock mechanism in consideration of the above facts.
[0007]
[Means for Solving the Problems]
  The present invention according to claim 1 is a lift-up hood that moves the front part of the hood upward of the vehicle body at the time of a vehicle collision in which a collision with a collision object is detected or predicted.
  Hood side engagement means provided at the front end of the hood body;
  A vehicle body side engagement means provided at a vehicle body front end, wherein the hood side engagement means is engaged from above the vehicle body;
  Provided at the front end of the vehicle body at the time of the vehicle front collision,While maintaining the engagement state between the engagement means on the hood side and the engagement means on the vehicle body side,By moving the engagement means on the vehicle body side upward, the engagement means on the hood side is moved.Moving means for moving the front portion of the hood upward of the vehicle bodyWhen,
  It is characterized by having.
[0008]
  Therefore,The engagement state between the hood-side engagement means provided at the front end of the hood and the engagement means provided at the front end of the hood and engaged with the hood-side engagement means from above the vehicle body It was installed at the front end of the vehicle during a frontal collision that detected or predicted a collision with a colliding body.By means of transportationBy moving the engagement means on the vehicle body side above the vehicle body, the front portion of the hood can be moved above the vehicle body via the engagement means on the hood side.As a result, the spring force constituting the hood lock mechanism is not affected by the moving speed of the hood front. For this reason, the moving speed of the front portion of the hood can be increased without increasing the spring force constituting the hood lock mechanism.
[0011]
  Claim 2The invention described isClaim 1The lift-up hood described in the above item is characterized in that a plurality of sets of the hood side engaging means and the vehicle body side engaging means are arranged along the vehicle width direction.
[0012]
  Therefore,Claim 1In addition to the contents described in the above, a plurality of sets of engaging means on the hood side and engaging means on the vehicle body side are arranged along the vehicle width direction, so that a wide range along the vehicle width direction at the front portion of the hood can be obtained. Improves shock absorption performance.
[0013]
  Claim 3In the lift-up hood according to any one of claims 1 and 2, the vehicle body side engaging means is attached to the vehicle body via a base member, and the moving means is the base. The member is moved upward of the vehicle body.
[0014]
Therefore, in addition to the contents described in any one of claims 1 and 2, since the engagement means on the vehicle body side moves upward of the vehicle body by the movement means via the base member, energy absorption is performed by deformation of the base member. Performance can be improved.
[0015]
  Claim 4The invention described isClaims 1-3In the lift-up hood according to any one of the above,Placed on the body side,The engagement means on the vehicle body side moves upward by the moving means.ByClose the gap between the hood and the vehicle bodyMove to closed positionIt has a wind shielding plate.
[0016]
  Therefore,Claims 1-3In addition to the contents described in any one of the above, the engagement means on the vehicle body side moves upward by the movement meansTherefore, the wind shielding plate arranged on the vehicle body sideCreate a gap between the hood and the car bodyMove to the blocking positionFor this reason, the wind shielding plate can suppress the inflow of the traveling wind into the engine room.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
A lift-up hood according to a first embodiment of the present invention will be described with reference to FIGS.
[0020]
In the figure, the arrow FR indicates the vehicle body front direction, the arrow UP indicates the vehicle body upward direction, and the arrow IN indicates the vehicle width inside direction.
[0021]
As shown in FIG. 3, in the present embodiment, a sensor 14 is built in the vehicle 10 near the surface of the front bumper 12, and the sensor 14 detects contact of a collision object. The sensor 14 is connected to the control device 18, and the control device 18 receives a vehicle speed signal, for example, a signal that the automobile is traveling at a predetermined speed (eg, 20 km / h) or more, In the case where it is determined that the contact is during traveling in combination with the output signal, a current is supplied to the actuator 24 as a moving means disposed at the upper end of the engine room.
[0022]
Note that the vehicle 10 of the present embodiment is a vehicle equipped with a rear drive engine, and the drive shaft 26 passes through the lower part of the vehicle body. Therefore, the engine 28 has a layout in which the front side of the vehicle body is high and the rear side of the vehicle body is low. ing. Therefore, the gap between the engine 28 and the hood 30 is small on the front side of the vehicle body.
[0023]
As shown in FIG. 1, a radiator mounting opening 34 is formed at the center of the radiator support 32 in the vehicle width direction. The radiator support 32 has an opening 34 on the rear side of the vehicle body near the outside in the vehicle width direction. Reinforcement 36 is respectively arranged. Further, the actuator 24 is fixed to the rear side surface of each reinforcement 36 by a fixing member 41 such as a bolt via a bracket 38.
[0024]
As shown in FIG. 2, the actuator 24 is composed of a motor, and the rotary shaft 24A is disposed from the lower side of the vehicle body toward the upper side of the vehicle body. Further, a screw is cut on the rotating shaft 24A of the actuator 24, and a nut 42 fixed to the base plate 40 is screwed onto the rotating shaft 24A.
[0025]
The base plate 40 is fixed with a lower end portion 44A of a lock striker 44 as an engagement means on the vehicle body side bent in an inverted U shape. And a through hole 48 formed in the upper wall portion 36 </ b> A of the reinforcement 36. Further, a lower end portion 46A of a hood lock 46 as an engaging means on the hood side is engaged with the upper portion 44B of the lock striker 44 from the vehicle body upper side, and the mounting portion 46B of the hood lock 46 is fixed with a bolt or the like. The member 48 is fixed to the lower front end 30 </ b> A of the hood 30.
[0026]
Therefore, when the actuator 24 is operated and the rotating shaft 24A rotates in a predetermined direction, the lock striker 44 together with the base plate 40 to which the nut 42 screwed to the rotating shaft 24A is fixed is moved to the lower limit position (normally shown in FIG. 2), the front portion 30B of the hood 30 to which the hood lock 46 is fixed is moved to the protruding position indicated by a two-dot chain line in FIG. It is designed to move upward.
[0027]
When the actuator 24 is operated and the rotating shaft 24A rotates in the reverse direction, the lock striker 44 together with the base plate 40 to which the nut 42 screwed to the rotating shaft 24A is fixed is moved from the protruding position indicated by a two-dot chain line in FIG. The front portion 30B of the hood 30 moves downward in the vehicle body by moving downward (in the direction of arrow B in FIG. 2) and returning to the lower limit position indicated by the solid line in FIG.
[0028]
The reinforcement 36 is provided with a stopper 52 that supports the base plate 40 at the lower limit position from below the vehicle body. Further, a seal rubber 53 is fixed to a portion 30C of the hood 30 near the rear of the vehicle body of the hood lock mounting portion by a fixing member 54 such as a pin. A gap 56 with the front portion 30B is closed.
[0029]
In FIG. 2, reference numeral 60 denotes a hood outer panel, and reference numeral 62 denotes a hood inner panel. Reference numeral 64 denotes a first hood lock reinforcement for attaching the hood lock 46 and securing rigidity along the vehicle width direction of the front end of the hood. Reference numeral 66 denotes a load when the front end of the hood is pushed and closed. A second hood lock reinforcement for transmitting to the lock 46 is shown.
[0030]
Next, the operation of this embodiment will be described.
[0031]
In the present embodiment, when the control device 18 determines from the vehicle speed signal that, for example, the automobile is traveling at a predetermined speed (e.g., 20 km / h) or more, a sensor incorporated in the front bumper 12 of the vehicle 10. 14 determines whether or not the contact of the collision object has been detected. When the control device 18 determines that the contact of the collision object S has been detected, the control device 18 causes a current to flow through the actuator 24 disposed in the radiator support 32 to operate the actuator 24.
[0032]
As a result, the rotary shaft 24A of the actuator 24 rotates in a predetermined direction, and the lock striker 44 together with the base plate 40 to which the nut 42 screwed to the rotary shaft 24A is fixed is moved to the lower limit position (normal position shown in FIG. 2). ) From above to the vehicle body (in the direction of arrow A in FIG. 2) and to the protruding position indicated by the two-dot chain line in FIG. 2, the front portion 30B of the hood 30 to which the hood lock 46 is fixed moves upward. The distance to the engine 28 increases. Therefore, the impact acting on the hood 30 due to the collision of the colliding body S is absorbed by deformation of the members constituting the hood 30 such as the hood outer panel 60, and when the impact is large, It can also be absorbed by bending.
[0033]
Further, in the present embodiment, two sets of the lock striker 44 on the hood 30 side and the hood lock 46 on the vehicle body side are arranged along the vehicle width direction, so that the vehicle width direction in the front portion 30B of the hood 30 is aligned. Improves shock absorption performance over a wide range.
[0034]
As described above, in this embodiment, the hood lock 46 disposed on the hood 30 side by the actuator 24 and the lock striker 44 disposed on the radiator support 32 on the vehicle body side are maintained while the hood lock is maintained. The front part 30B of 30 can be moved upward of the vehicle body.
[0035]
Accordingly, the spring force constituting the hood lock mechanism, that is, the spring force for moving the front portion 30B of the hood 30 upward in the vehicle body when the hood 30 is opened in a normal use state, It is not affected by the moving speed of the front portion 30B. For this reason, the spring force which comprises a hood lock mechanism can be set to the spring force below the predetermined value which does not interfere with the closing operation of the hood 30. On the other hand, at the time of a vehicle collision, the actuator 24 detects a collision between the vehicle 10 and the collision object S, and thus the front part 30B of the hood 30 is completely lifted up in a short time, so use a sensor with a long collision detection time. This makes it possible to reduce the restrictions on the sensors that can be used and reduce the cost of the sensors.
[0036]
In this embodiment, two sets of the lock striker 44 on the hood 30 side and the hood lock 46 on the vehicle body side are disposed along the vehicle width direction. Instead, the lock striker 44 on the hood 30 side and the vehicle body Three or more sets of the side hood locks 46 may be disposed along the vehicle width direction.
[0037]
Next, a second embodiment of the lift-up hood according to the present invention will be described with reference to FIG.
[0038]
In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0039]
As shown in FIG. 4, in this embodiment, the actuator 24 as a moving means is configured by an inflator. The actuator 24 includes an outer cylinder 70, a piston 72, an insulator 74 that performs ignition and gas generation, and an outer cylinder 70. A cylinder 76 is provided at the upper end to guide the piston 72. Further, a ring-shaped groove 78 is formed in the inner peripheral portion of the upper portion of the outer cylinder 70, and a ring 79 made of a spring material and having a C shape is disposed in the groove 78.
[0040]
On the other hand, the lower end portion 72A of the piston 72 has a conical shape, and when the piston 72 moves upward), the inclined surface 72B of the lower end portion 72A passes through the ring 79 by expanding the ring 79. However, as shown by a two-dot chain line in FIG. 4, when passing through the ring 79, the bottom surface 72 </ b> C of the lower end portion 72 </ b> A engages with the ring 79 and the downward movement of the piston 72 is prevented. .
[0041]
The upper end portion 72D of the piston 72 is connected to a nut 42 fixed to the base plate 40 that supports the lock striker 44.
[0042]
Next, the operation of this embodiment will be described.
[0043]
In the present embodiment, as in the first embodiment, when the actuator 24 is operated, the gas generated from the insulator 74 of the actuator 24 raises the piston 72 and together with the base plate 40 to which the nut 42 connected to the piston 72 is fixed. By moving the lock striker 44 from the lower limit position (normal position) indicated by the solid line in FIG. 4 to the upper side of the vehicle body (in the direction of arrow A in FIG. 4), to the protruding position indicated by the two-dot chain line in FIG. The front portion 30B of the hood 30 to which the hood lock 46 is fixed moves upward in the vehicle body, and the impact when the collision body S collides is reduced.
[0044]
As described above, in this embodiment, the hood lock 46 disposed on the hood 30 side by the actuator 24 and the lock striker 44 disposed on the radiator support 32 on the vehicle body side are maintained while the hood lock is maintained. The front part 30B of 30 can be moved upward of the vehicle body.
[0045]
Accordingly, the spring force constituting the hood lock mechanism, that is, the spring force for moving the front portion 30B of the hood 30 upward in the vehicle body when the hood 30 is opened in a normal use state, It is not affected by the moving speed of the front portion 30B. For this reason, the spring force which comprises a hood lock mechanism can be set to the spring force below the predetermined value which does not interfere with the hood closing operation. On the other hand, at the time of a vehicle collision, the actuator 24 detects a collision between the vehicle 10 and the collision object S, and thus the front part 30B of the hood 30 is completely lifted up in a short time, so use a sensor with a long collision detection time. This makes it possible to reduce the restrictions on the sensors that can be used and reduce the cost of the sensors.
[0046]
Next, a third embodiment of the lift-up hood according to the present invention will be described with reference to FIGS.
[0047]
In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0048]
As shown in FIG. 5, in this embodiment, the radiator support 32 is divided into a left and right radiator support side 80 and an upper radiator support upper member 82, and the radiator support upper member 82 has a reinforcement as a base member. 84 is arranged. Further, the vehicle width direction central portion 82A of the radiator support upper member 82 and the vehicle width direction central portion 84A of the reinforcement 84 are joined, and a through hole 86 is formed in the joint portion. A lock striker 88 as an engagement means on the vehicle body side that is bent in an inverted U shape is disposed at the center of the through hole 86 in the vehicle width direction, and is provided at both ends of the radiator support upper member 82 in the vehicle width direction. A cylindrical rubber damper 89 that prevents the hood 30 from flapping during traveling is disposed on the upper wall portion 82B.
[0049]
As shown in FIG. 6, the vertical wall portion 88 </ b> A of the lock striker 88 is welded to the inner side surface of the central portion 84 </ b> A in the vehicle width direction of the reinforcement 84 having a U-shaped side section, and the upper portion 88 </ b> B of the lock striker 88. The lower end portion 46A of the hood lock 46 is engaged from above the vehicle body.
[0050]
As shown in FIG. 5, nuts 42 are fixed to both ends 84 </ b> B in the vehicle width direction of the reinforcement 84 that is directly below the rubber damper 89, and the rotation shaft of the actuator 24 is attached to the nut 42 as in the first embodiment. 24A is screwed. In addition, between the vehicle width direction center part 84A and the vehicle width direction both ends 84B in the reinforcement 84 is an inclined part 84C extending from the vehicle width direction inner upper part toward the vehicle width direction outer lower part.
[0051]
Therefore, when the actuator 24 is operated and the rotating shaft 24A rotates in a predetermined direction, the lock striker 88 together with the reinforcement 84 and the radiator support upper member 82 to which the nut 42 screwed to the rotating shaft 24A is fixed is shown in FIG. The hood with the hood lock 46 fixed by moving from the lower limit position (normal position) indicated by the solid line to the upper side of the vehicle body (in the direction of arrow A in FIG. 7) and to the protruding position indicated by the two-dot chain line in FIG. The front part 30B of 30 moves to the upper part of the vehicle body.
[0052]
Further, when the actuator 24 is operated and the rotating shaft 24A rotates in the reverse direction, the lock striker 88 together with the reinforcement 84 and the radiator support upper member 82 to which the nut 42 screwed to the rotating shaft 24A is fixed are shown in FIG. The front portion 30B of the hood 30 to which the hood lock 46 is fixed is moved from the protruding position shown by the dotted line to the lower side of the vehicle body (in the direction of arrow B in FIG. 7) and back to the lower limit position shown by the solid line in FIG. It is designed to move downward.
[0053]
The left and right radiator support sides 80 are each provided with a stopper 52 to support the reinforcement 84 at the lower limit position from below the vehicle body.
[0054]
Next, the operation of this embodiment will be described.
[0055]
In the present embodiment, similarly to the first embodiment, when the actuator 24 is operated, the rotary shaft 24A of the actuator 24 rotates in a predetermined direction, and the reinforcement 84 and the radiator to which the nut 42 screwed to the rotary shaft 24A is fixed. The lock striker 88 together with the support upper member 82 moves from the lower limit position (normal position) indicated by a solid line in FIG. By moving, the front portion 30B of the hood 30 to which the hood lock 46 is fixed moves upward and the distance from the engine 28 increases. Therefore, the impact acting on the hood 30 due to the collision of the collision body S is absorbed by deformation of the members constituting the hood 30 such as the hood outer panel 60. When the impact is large, the impact is transmitted to the lock striker 88 and the reinforcement 84 Further, it can be absorbed by the downward bending of the radiator support upper member 82, and the energy absorption performance can be improved.
[0056]
Thus, in this embodiment, the engagement state between the hood lock 46 disposed on the hood 30 side by the actuator 24 and the lock striker 88 disposed on the radiator support upper member 82 on the vehicle body is maintained. The front portion 30B of the hood 30 can be moved upward in the vehicle body.
[0057]
Accordingly, the spring force constituting the hood lock mechanism, that is, the spring force for moving the front portion 30B of the hood 30 upward in the vehicle body when the hood 30 is opened in a normal use state, It is not affected by the moving speed of the front portion 30B. For this reason, the spring force which comprises a hood lock mechanism can be set to the spring force below the predetermined value which does not interfere with the hood closing operation. On the other hand, at the time of a vehicle collision, the actuator 24 detects a collision between the vehicle 10 and the collision object S, and thus the front part 30B of the hood 30 is completely lifted up in a short time, so use a sensor with a long collision detection time. This makes it possible to reduce the restrictions on the sensors that can be used and reduce the cost of the sensors.
[0058]
Next, a fourth embodiment of the lift-up hood according to the present invention will be described with reference to FIG.
[0059]
In addition, about the same member as 3rd Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0060]
As shown in FIG. 8, in the present embodiment, a mounting portion 82C that bulges downward in the vehicle body is formed at the center of the radiator support upper member 82 in the vehicle width direction. Is fixed. The rotation of the output shaft of the actuator 24 is decelerated by the gear box 90. The rotation of the gear box 90 is a first link 92 fixed to the gear box 90, and a first link 92 rotatably connected to both ends of the first link 92. It is transmitted to one end portion 96 </ b> A of the third link 96 through the two links 94.
[0061]
The third link 96 is an L-shaped link, and the bent portion 96B is pivotally supported on the left and right radiator support sides 80 by pins 98. A pin 100 is erected on the other end 96 of the third link 96, and the pin 100 is engaged with a long hole 102 formed in the radiator support upper member 82 and extending in the vehicle width direction. .
[0062]
Therefore, when the gear in the gear box 90 rotates in a predetermined direction (in the direction of arrow C in FIG. 8), the third link 96 is centered on the pin 98 via the first link 92 and the second link 94 in FIG. The radiator support upper member 82 that rotates in the direction of arrow D and engages with the pin 100 of the third link 96 in the long hole 102 moves upward in the vehicle body.
[0063]
Next, the operation of this embodiment will be described.
[0064]
In the present embodiment, as in the first and third embodiments, when the actuator 24 operates and the rotation shaft 24A of the actuator 24 rotates in a predetermined direction, the gear box 90 in the gear box 90 that is screwed to the rotation shaft 24A is provided. The gear rotates in the direction of arrow C in FIG. When the shaft in the gear box 90 rotates in the direction of arrow C in FIG. 8, the third link 96 rotates in the direction of arrow D in FIG. 8 about the pin 98 via the first link 92 and the second link 94. When the radiator support upper member 82 engaged with the pin 100 of the third link 96 moves in the elongated hole 102, the front portion 30B of the hood 30 to which the hood lock 46 is fixed moves upward. The distance between the front portion 30B of the hood 30 and the engine 28 increases.
[0065]
Therefore, the impact acting on the hood 30 due to the collision of the collision body S is absorbed by deformation of the members constituting the hood 30 such as the hood outer panel 60, and when the impact is large, it is transmitted to the lock striker 88 and the radiator support upper Absorption can also be achieved by bending the member 82 downward.
[0066]
Thus, in this embodiment, the engagement state between the hood lock 46 disposed on the hood 30 side by the actuator 24 and the lock striker 88 disposed on the radiator support upper member 82 on the vehicle body is maintained. The front portion 30B of the hood 30 can be moved upward in the vehicle body.
[0067]
Accordingly, the spring force constituting the hood lock mechanism, that is, the spring force for moving the front portion 30B of the hood 30 upward in the vehicle body when the hood 30 is opened in a normal use state, It is not affected by the moving speed of the front portion 30B. For this reason, the spring force which comprises a hood lock mechanism can be set to the spring force below the predetermined value which does not interfere with the hood closing operation. On the other hand, at the time of a vehicle collision, the actuator 24 detects a collision between the vehicle 10 and the collision object S, and thus the front part 30B of the hood 30 is completely lifted up in a short time, so use a sensor with a long collision detection time. This makes it possible to reduce the restrictions on the sensors that can be used and reduce the cost of the sensors.
[0068]
Next, a fifth embodiment of the lift-up hood according to the present invention will be described with reference to FIGS.
[0069]
In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0070]
As shown in FIG. 9, in this embodiment, a mounting portion 32B extending downward is formed at the center portion of the radiator support 32 in the vehicle width direction, and the actuator 24 is fixed to the rear side surface of the mounting portion 32B. Has been.
[0071]
As shown in FIG. 10, when the actuator 24 is operated and the rotating shaft 24A rotates in a predetermined direction, the lock striker 44 together with the base plate 40 to which the nut 42 screwed to the rotating shaft 24A is fixed is shown by a solid line in FIG. The hood 30 to which the hood lock 46 is fixed is moved from the lower limit position (ordinary position) shown in FIG. The front portion 30B moves upwards of the vehicle body.
[0072]
When the actuator 24 is operated and the rotating shaft 24A rotates in the reverse direction, the lock striker 44 together with the base plate 40 to which the nut 42 screwed to the rotating shaft 24A is fixed is moved from the protruding position shown by the two-dot chain line in FIG. By moving downward in the vehicle body (in the direction of arrow B in FIG. 10) and returning to the lower limit position indicated by the solid line in FIG. 10, the front portion 30B of the hood 30 to which the hood lock 46 is fixed moves downward in the vehicle body. ing.
[0073]
As shown in FIG. 9, a shroud panel 110 serving as a wind shielding plate is disposed at the vehicle width direction center portion of the upper wall portion 32 </ b> A of the radiator support 32, and the front end edge portion of the shroud panel 110 has a vehicle width. A shaft 112 extending along the direction is rotatably connected to the upper edge of the base plate 114. Further, the lower portion of the base plate 114 is fixed to the front surface of the vehicle body of the vertical wall portion 32C of the radiator support 32 by a fixing member 116 such as a bolt, and the shroud panel 110 is rear-end by a spring 118 wound around the shaft 112. The portion 110 </ b> A is pressed against the upper wall portion 32 </ b> A of the radiator support 32.
[0074]
As shown in FIG. 10, a notch 119 is formed in the vehicle width direction center portion 110B of the shroud panel 110 from the rear side of the vehicle body, and the vehicle width direction center portion 110B of the shroud panel 110 is formed on the upper portion 44B of the lock striker 44. It is in contact with the top surface. Therefore, when the actuator 24 is operated and the rotating shaft 24A rotates in a predetermined direction, the lock striker 44 together with the base plate 40 to which the nut 42 is fixed moves from the lower limit position (normal position) indicated by the solid line in FIG. (In the direction of arrow A in FIG. 10), the front portion 30B of the hood 30 to which the hood lock 46 is fixed moves upward and the vehicle locks by moving to the protruding position indicated by the two-dot chain line in FIG. The shroud panel 110 pressed upward by the striker 44 resists the biasing force of the spring 118, and moves upward from the lower limit position (normal position) indicated by the solid line in FIGS. 10 and the direction of arrow E in FIG. 11) and moves to the closed position indicated by the two-dot chain line in FIGS. 10 and 11.
[0075]
As indicated by a two-dot chain line in FIG. 11, the shroud panel 110 moves to the closed position so that the rear end portion 110 </ b> A faces the front portion 30 </ b> B of the raised hood 30 with a slight gap 120. .
[0076]
When the actuator 24 is operated and the rotating shaft 24A rotates in the reverse direction, the lock striker 44 together with the base plate 40 to which the nut 42 screwed to the rotating shaft 24A is fixed is moved from the protruding position shown by the two-dot chain line in FIG. When the vehicle moves downward (in the direction of arrow B in FIG. 10) and returns to the lower limit position indicated by the solid line in FIG. 10, the front portion 30B of the hood 30 to which the hood lock 46 is fixed moves downward, and the shroud The panel 110 also rotates downward from the closed position indicated by a two-dot chain line in FIG. 10 around the shaft 112 to the lower limit position (normal position) indicated by the solid line in FIG. It is like that.
[0077]
A cushioning material 112 such as rubber is disposed on the rear end portion 110A of the shroud panel 110, and the rear end portion 110A of the shroud panel 110 is disposed on the upper wall portion 32A of the radiator support 32 via the cushioning material 112. Abut.
[0078]
Next, the operation of this embodiment will be described.
[0079]
In the present embodiment, similarly to the first embodiment, when the actuator 24 operates and the rotation shaft 24A of the actuator 24 rotates in a predetermined direction, the nut 42 that is screwed to the rotation shaft 24A is locked together with the fixed base plate 40. The striker 44 moves from the lower limit position (normal position) indicated by the solid line in FIG. 10 to above the vehicle body (in the direction of arrow A in FIG. 10) and moves to the protruding position indicated by the two-dot chain line in FIG. The front portion 30B of the hood 30 to which the lock 46 is fixed moves upward in the vehicle body, and the shroud panel 110 pressed by the lock striker 44 resists the biasing force of the spring 118 and is shown by a solid line in FIGS. From the lower limit position (ordinary position) shown, the vehicle rotates about the shaft 112 upward (in the direction of arrow E in FIGS. 10 and 11), and in FIGS. Moving to be occluded position.
[0080]
Therefore, the impact acting on the hood 30 due to the collision of the collision body S is absorbed by deformation of the members constituting the hood 30 such as the hood outer panel 60, and can be absorbed by deformation of the shroud panel 110 when the impact is large. . At this time, since the shroud panel 110 is extended in the vehicle width direction, the shock absorbing performance in a wide range along the vehicle width direction is improved as compared with the case where the shock is absorbed only by the lock striker 44.
[0081]
Further, as shown by a two-dot chain line in FIG. 11, the shroud panel 110 moves to the closed position, so that the rear end portion 110 </ b> A faces the front portion 30 </ b> B of the raised hood 30 with a slight gap 120. As a result, when the shroud panel 110 moves to the closed position, the inflow of the traveling wind into the engine room when the front portion 30B of the hood 30 moves upward of the vehicle body can be suppressed. For this reason, in the unlikely event that the front portion 30B of the hood 30 rises other than in a vehicle collision, the air resistance when the actuator 24 is driven and the front portion 30B of the hood 30 is lowered can be reduced.
[0082]
Further, since the shroud panel 110 moves to the closed position where the gap 120 is closed by the upward movement of the lock striker 44, the configuration of the apparatus can be simplified.
[0083]
As described above, in this embodiment, the hood lock 46 disposed on the hood 30 side by the actuator 24 and the lock striker 44 disposed on the radiator support 32 on the vehicle body side are maintained while the hood lock is maintained. The front part 30B of 30 can be moved upward of the vehicle body.
[0084]
Accordingly, the spring force constituting the hood lock mechanism, that is, the spring force for moving the front portion 30B of the hood 30 upward in the vehicle body when the hood 30 is opened in a normal use state, It is not affected by the moving speed of the front portion 30B. For this reason, the spring force which comprises a hood lock mechanism can be set to the spring force below the predetermined value which does not interfere with the hood closing operation. On the other hand, at the time of a vehicle collision, the actuator 24 detects a collision between the vehicle 10 and the collision object S, and thus the front part 30B of the hood 30 is completely lifted up in a short time, so use a sensor with a long collision detection time. This makes it possible to reduce the restrictions on the sensors that can be used and reduce the cost of the sensors.
[0085]
Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in each of the above embodiments, the actuator is operated when the contact of the collision object is detected by the sensor 14 built in the vehicle 10 near the surface of the front bumper 12, but instead of this, an infrared sensor, CCD is used. It is good also as a structure which act | operates an actuator, when the collision with a collision body is estimated by non-contact-type sensors, such as a camera.
[0086]
In each of the above embodiments, the lift-up hood of the present invention is applied to a vehicle equipped with a rear drive engine. It can also be applied to other vehicles.
[0087]
【The invention's effect】
  The present invention according to claim 1 is a lift-up hood that moves the front part of the hood upward of the vehicle body at the time of a vehicle collision in which a collision with a collision object is detected or predicted.A hood-side engagement means provided at the front end of the hood, a vehicle-side engagement means provided at the vehicle front end and engaged with the hood-side engagement means from above the vehicle, and the vehicle front end At the front of the vehicle,While maintaining the engagement state of the engagement means on the hood side and the engagement means on the vehicle body side,By moving the engagement means on the vehicle body side upwards through the engagement means on the hood sideMoving means for moving the front part of the hood upward of the vehicle bodyWhen,Therefore, the moving speed of the front portion of the hood can be increased without increasing the spring force constituting the hood lock mechanism.
[0089]
  Claim 2The invention described isClaim 1In the lift-up hood described in the above, a plurality of sets of hood side engaging means and vehicle body side engaging means are arranged along the vehicle width direction.Claim 1In addition to the effects described in (1), the shock absorbing performance in a wide range along the vehicle width direction at the front portion of the hood is improved.
[0090]
  Claim 3The lift-up hood according to any one of claims 1 and 2, wherein the engagement means on the vehicle body side is attached to the vehicle body via a base member, and the moving means attaches the base member to the vehicle body. Since it moves upward, in addition to the effect of any one of Claims 1 and 2, it has the outstanding effect that energy absorption performance can be improved by deformation | transformation of a base member.
[0091]
  Claim 4The invention described isClaims 1-3In the lift-up hood according to any one of the above,Placed on the body side,The engagement means on the vehicle body side moves upward by the moving means.ByClose the gap between the hood and the car bodyMove to closed positionBecause it has a wind shield,Claims 1-3In addition to the effect described in any one of the above, there is an excellent effect that the inflow of the traveling wind into the engine room can be suppressed.
[Brief description of the drawings]
FIG. 1 is a perspective view of a lift-up hood according to a first embodiment of the present invention viewed from an obliquely front side of a vehicle body in a normal use state.
FIG. 2 is a side sectional view showing a normal use state of the lift-up hood according to the first embodiment of the present invention.
FIG. 3 is a schematic side view showing a front portion of a vehicle body to which the lift-up hood according to the first embodiment of the present invention is applied.
FIG. 4 is a side sectional view showing a normal use state of a lift-up hood according to a second embodiment of the present invention.
FIG. 5 is a perspective view of the lift-up hood according to the third embodiment of the present invention as seen from the front side of the vehicle body in a normal use state.
6 is a cross-sectional view taken along line 6-6 of FIG.
7 is a cross-sectional view taken along line 7-7 in FIG.
FIG. 8 is a perspective view of the lift-up hood according to the fourth embodiment of the present invention as seen from an obliquely forward direction of the vehicle body showing a normal use state.
FIG. 9 is a perspective view of the lift-up hood according to the fourth embodiment of the present invention as seen from the obliquely forward direction of the vehicle body in a normal use state.
10 is a cross-sectional view taken along line 10-10 of FIG.
11 is a cross-sectional view taken along line 11-11 in FIG.
[Explanation of symbols]
18 Control device
24 Actuator (moving means)
30 food
32 Radiator support
36 Reinforcement
40 Base plate
44 Lock striker (engagement means on the vehicle body side)
46 Hood lock (engagement means on the hood side)
80 Radiator support side
82 Radiator support upper member
84 Reinforcement (base material)
88 Lock striker (engagement means on the vehicle body)
110 Shroud panel (wind shield)

Claims (4)

A lift-up hood that moves the front part of the hood upward at the time of a vehicle collision when a collision with a collision object is detected or predicted,
Hood side engagement means provided at the front end of the hood body;
A vehicle body side engagement means provided at a vehicle body front end, wherein the hood side engagement means is engaged from above the vehicle body;
At the front end of the vehicle body , the vehicle body side engagement means is moved upward while maintaining the engagement state between the hood side engagement means and the vehicle body side engagement means at the time of the vehicle front collision . A moving means for moving the front part of the hood upward through the engagement means on the hood side ,
A lift-up hood characterized by comprising: The lift-up hood according to claim 1, wherein a plurality of sets of the hood side engaging means and the vehicle body side engaging means are arranged along the vehicle width direction . The engagement means on the vehicle body side is attached to the vehicle body via a base member, and the moving means moves the base member upward of the vehicle body. Lift up hood. A wind shielding plate that is disposed on the vehicle body side and moves to a closed position that closes a gap formed between the hood and the vehicle body side when the engagement means on the vehicle body side moves upward by the moving unit; The lift-up hood according to any one of claims 1 to 3 .

Images