JP2004352134A - Hood tip-up device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hood tip-up device for a vehicle which is not affected by various fender lengths of each vehicle model, for which the adjustment of the tip-up responsiveness of a hood for the vehicle can easily be performed, and which is constituted in such a manner that the tip-up height adjustment of the hood for the vehicle can easily be performed, and also, of which safety is increased. <P>SOLUTION: A rail R is fixed to a vehicle body 18, and a shoe S is freely slidably arranged in the rail. A front stopper FS is attached to a specified position of the rail, and a coil spring 14 is provided between the stopper FS and the shoe S. Also, a link mechanism 9 to one end of which a hood 2 is fixed, and to the other end of which shoe S is fixed is turned with a fixed point O as the pivot, and the hood 2 which is attached to the one end of the link mechanism 9 is lifted upward by the movement of the shoe S. A thread part 15 is formed in the rail in which the shoe S slides, and the stopper FS is made movable to the link member side by screwing the stopper FS on the front side with the thread part 15 of the rail R. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle hood jumping-up device that jumps up a vehicle hood and protects a pedestrian when a pedestrian or the like hits a vehicle, and particularly relates to a vehicle hood jumping-up state. The present invention relates to a vehicle hood flip-up device capable of changing a vehicle hood.
[0002]
[Prior art]
In recent years, when a pedestrian hits a running vehicle due to an increase in traffic accidents, the vehicle hood is instantly flipped up and lifted up for the purpose of protecting pedestrians. 2. Description of the Related Art A hood jumping-up device for a vehicle, which secures a space between a hood and an engine disposed in an engine room and absorbs an impact at the time of a collision to protect a pedestrian, has been developed in view of improving safety.
[0003]
As this type of device, for example, a device that operates a link mechanism connected to a vehicle hood by operating an inflator is known (for example, see Patent Document 1).
[0004]
In the device disclosed in Patent Document 1, a link mechanism including a first link and a second link having a predetermined length is provided between a vehicle body and a vehicle hood, and the height of the link mechanism is increased by operating an inflator. Is rising.
[0005]
[Patent Document 1]
JP-A-9-315266 (page 1, FIG. 2)
[0006]
[Problems to be solved by the invention]
However, in the apparatus disclosed in the above-mentioned publication, the height at which the vehicle hood is jumped is determined by the length of the first link and the second link or the amount of pushing up of the rod.
[0007]
On the other hand, with respect to the responsiveness of flipping up the vehicle hood, the amount of the inflator may be adjusted, but a large amount of explosive is required to improve the responsiveness. However, it is not preferable to have many explosives in the engine room.
[0008]
In general, vehicles have various fender lengths depending on the arrangement of the engine (for example, vertically or horizontally), the displacement of the engine, or a medium-sized vehicle or a large-sized vehicle. In the case where the present invention is applied to a vehicle having a long engine room in the front-rear direction of the vehicle), the length of the first link and the second link must be set as compared with the vehicle in front of the vehicle. It is necessary to determine the length of the first link and the second link, and to set the jumping height of the vehicle hood. Regarding the responsiveness, the amount of explosive for activating the inflator may be changed for each vehicle, but it is not preferable for the vehicle to increase the amount of explosive.
[0009]
Therefore, the present invention has been made in view of the above-described problems, and is not affected by the length of the fender of various vehicles for each type of vehicle, and can easily adjust the flip-up response of the vehicle hood. It is a technical object of the present invention to easily adjust the height of a vehicle hood jumped up and to improve the safety of a vehicle hood jumping-up device.
[0010]
[Means for Solving the Problems]
Technical measures taken to solve the above-mentioned problems include a rail fixed to a vehicle body, a shoe slidable in the rail, and a first locking member disposed in the rail. A biasing member disposed between the first locking member and the shoe, one end of which is connected to the vehicle hood, and the other end of which is fixed to the shoe; A vehicle hood jumping device comprising: a link mechanism that jumps up the vehicle hood from a closed position to an upper open position by moving the shoe; and a driving unit that allows the shoe to move. A screw portion is formed inside the rail, and the first locking member is screwed to the screw portion to be movable toward the link member.
[0011]
According to the above-described means, the screw portion is formed inside the rail, and the first locking member is screwed into the screw portion, so that the responsiveness of the vehicle hood jumping from the closed position to the open position is improved. It can be easily changed. This is because if the position of the first locking member that locks the urging member in the rail is adjusted for each vehicle type having a different fender length, the urging force of the urging member that operates the link mechanism can be adjusted. The responsiveness can be easily changed for each vehicle type. In this configuration, it is not necessary to adjust the explosive amount of the inflator as in the related art when adjusting the responsiveness of the vehicle hood when the vehicle hood is flipped up, and the adjustment is performed by the urging force of the urging member, thereby improving safety.
[0012]
In this case, the first locking member is inserted from the rail end, and if a polygonal hole is formed in the insertion direction, the polygonal hole of the first locking member formed in the insertion direction from the rail end is If the position of the first locking member in the rail is adjusted using a special tool (for example, a hexagon wrench), the responsiveness can be easily adjusted.
[0013]
When the link member is rotated by the urging force of the urging member to move the vehicle hood from the closed position to the open position, the second locking member that determines the open position can be adjusted in the rail. By adjusting the position of the second locking member in the rail, the height of the vehicle hood at the open position can be easily adjusted. In this case, if it is desired to increase the height of the vehicle hood, the height of the vehicle hood is increased relative to the vehicle body by moving the second locking member to the fixed point side of the link mechanism. Conversely, by moving the second locking member toward the shoe, the height of the vehicle hood is reduced relative to the vehicle body. Therefore, by adjusting the position of the second locking member in the rail, it is possible to adjust the jumping height of the vehicle hood regardless of the length of the fender of various vehicles for each vehicle type. Thus, the adjustment of the jumping height can be easily performed.
[0014]
Further, if the second locking member is fitted in the rail and is fixed so as to be adjustable by the fixing member from the side of the rail, the second locking member is adjusted in the rail by adjusting the fixing member from the side of the rail. The position of the stop member is determined, and the second locking member is fixed to the rail by the fixing member.
[0015]
Furthermore, if an adjusting member is interposed between the first locking member and the urging member, even if the first locking member is moved within the rail, the first locking member and the urging member can be moved. Since the adjusting member is interposed therebetween, the adjusting force of the first locking member does not directly act on the biasing member when the position of the first locking member in the rail is adjusted. Adjustment of the stop member is facilitated.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0017]
FIG. 1 is a layout view showing a mounting position when a vehicle hood lifting device (hereinafter, referred to as the present device) 1 is applied to a vehicle 19, and the present device 1 is a vehicle hood called a hood. (Simply called a hood) 2 and a vehicle body (simply called a body) 18.
[0018]
As shown in FIG. 1, the vehicle 19 includes a hood 2 in front of a driver's seat. The hood 2 covers an engine room 6 in which an engine 5 of the vehicle is disposed from above. The hood 2 is provided with a pair of symmetrical rear opening / closing devices 4a at both left and right ends behind the hood. A hood lock mechanism 7 is provided at the center in the vehicle width direction in front of the hood, and below the hood lock mechanism 7, the hood lock mechanism 7 is moved forward with respect to the vehicle 19 to flip the hood 2 upward. The device 4b is provided at the center in the vehicle width direction.
[0019]
The hood 2 is configured such that the hood front side is slidably opened and closed by the rear opening and closing device 4a, and the hood rear side is flipped up with a hood lock mechanism 7 that regulates rotation by the opening and closing operation in front of the hood. Has become. Further, the front opening / closing device 4b raises the front of the hood together with the hood lock mechanism 7, so that not only the rear of the hood but also the front of the hood can be raised.
[0020]
Since the above-mentioned rear opening and closing devices 4a and 4b are bilaterally symmetric, only one (right side) configuration will be described below.
[0021]
As shown in FIG. 2, the opening and closing structure of the hood 2 rotates with respect to a link mechanism 9 provided between the hood 2 and the main operating mechanism 8, and operates in cooperation with the main operating mechanism 8. An operation switching mechanism 11 for switching the operation of the motor M constituting the sub-operation mechanism 10, the auxiliary device Me and the main operation mechanism 8, and realizing the return operation by the operation of the sub-operation mechanism 10. The opening and closing operation of the hood 2 is configured to be allowed to rotate by the motor M.
[0022]
(Link mechanism 9)
The link mechanism 9 includes a first link L1 and a second link L2, as shown in FIG. The first link L1 has a fulcrum to which the second link L2 is rotatably connected, has a slightly bent shape around the fulcrum, and has a hinge arm 12 whose front end at the rear of the vehicle is fixed to the hood 2. The hinge arm 12 and the first link L1 are rotatable. A lower base end of the first link L1 is fixed to a shoe S slidably disposed in a rail R which is a component of the main operation mechanism 8. On the other hand, the second link L2 has a linear shape, one end of which is rotatably connected at about 1/3 from the lower end of the first link L1, and the other end (base end) of which is the end of the rail. It is supported by a fixed portion 18 provided on the body side facing the vehicle (rear side of the vehicle), and is rotatable around a rotation fulcrum (fixed point) O of the fixed portion.
[0023]
With such a configuration, with the movement of the shoe S in the front-rear direction on the rail, the second link L2 functions as a rotation link with the rotation fulcrum O as a fulcrum, and the first link L1 is centered on an intermediate fulcrum. And function as an ascending link. In FIG. 4, when the hood 2 is in the retracted state (the closed position), the center of the shoe S can move to the closed corresponding position s1, which is separated from the rotation fulcrum O of the second link L2 by a predetermined distance. is there. On the other hand, when the hood 2 is in the lift-up state (open position), the state shown in FIG. 5 is reached, and the shoe S can move to the open corresponding position s2 close to the center rotation fulcrum O of the shoe S.
[0024]
(Main operating mechanism 8)
The main operating mechanism 8 is a mechanism for moving the shoe S that determines the base position below the first link L1 from the closed corresponding position s1 to the open corresponding position s2, and an operation switching mechanism (driving means) described later. 11 has a function of moving the shoe S from the closed corresponding position s1 to the open corresponding position s2 when the movement of the shoe S is allowed and the free state is established. The main operating mechanism 8 is provided on a rail R on which the shoe S is housed, and on a bracket for fixing the rail R to a vehicle side (for example, an engine room side groove of a fender which is a part of the body 3), and a second link L2. Is constituted by a fixing portion 18 which rotatably supports the. The main operating mechanism 8 includes an urging mechanism 14 for urging the second link L2 clockwise about the rotation fulcrum O when the shoe S is at the closed position s1. The biasing mechanism 14 includes a coil spring C and a stopper FS for locking one end of the coil spring. The coil spring C is set to have a length close to the free length when the center of the shoe S reaches the opening corresponding position s2. For this reason, a front stopper FS is provided at a predetermined position in the rail at the front side of the coil spring C, and the extension of the spring C is stopped when the shoe S reaches the opening corresponding position s2. A rear stopper BS is provided at a predetermined position in the rail. The above-described front stopper FS and rear stopper BS will be described below.
[0025]
The front stopper FS is provided in a rail extending in the front-rear direction. The rail R has a substantially C-shaped cross section, and the side surface is open. The inside of the rail is machined, and a screw portion 15 is formed inside the rail R along the longitudinal direction of the rail R. In this case, the screw portion 15 may be formed continuously so as to connect both ends of the rail R, or may be formed within a predetermined range (several cm to several tens cm) from both ends or one end of the rail R. good. When the rail R is attached to the side groove of the fender of the vehicle 19, the length of the rail R is set to be independent of the length of the fender.
[0026]
The rail R has a front end opening forward, and a stopper FS that is screwed into a screw portion 15 formed therein is attached from the front of the rail R. In the direction (axial direction) in which the stopper FS enters the screw portion 14 in the rail, for example, a polygonal hole 16 is formed in the center of a hexagonal hole. The polygonal hole 16 is a hexagonal hole in the present embodiment, but is not limited to this, and may be a polygonal hole such as a triangular hole, a square hole, or a pentagonal hole. A special tool is inserted into the polygonal hole 16 formed in the stopper FS from the opening at the end of the rail R, and the position of the stopper FS in the rail is adjusted by rotating the special tool to rotate the stopper FS. In the direction, and can be positioned at a predetermined position in the rail. In this case, a washer 17 is interposed between the coil spring C and the stopper FS as an adjustment member. By interposing the washer 17 between the stopper FS and the coil spring C, the stopper FS is When the position of the stopper FS is adjusted while turning, the torsion force of the coil spring C acts on the end face of the coil spring C as a circumferential biasing force on the end face of the coil spring C. It can be absorbed by interposing a washer 17 between the spring C and the stopper FS. Thus, the reaction force of the torsional force is not directly transmitted to the stopper 17, so that the positioning of the stopper FS can be easily adjusted. For example, when the same coil spring C is used, in a certain vehicle (vehicle type), the position of the stopper FS is adjusted to a position near the tip of the rail R. In another vehicle (vehicle type), by adjusting the position of the stopper FS in the rail by moving the position of the stopper FS to the depth of the rail R as shown in FIG. It becomes possible by adjusting.
[0027]
On the other hand, the rear stopper BS disposed in the rail may be fitted from the opened rear end of the rail R and positioned at a predetermined position in the rail by the same method as the mounting of the front stopper 15. However, in this embodiment, the rear stopper BS adopts the following attachment. FIG. 11 schematically shows the mounting structure of the stopper BS in the rail.
[0028]
As the stopper BS, a cubic-shaped stopper BS is fitted into the rail from the rear end. The stopper BS has a through hole 23 on the side shown in FIG. 10, and a fixing member 21 such as a bolt is inserted into the through hole 22 as shown in FIG. 11, and a bolt end (male screw portion) of the fixing member 21 is inserted into the stopper BS. The nut 22 is screwed through the spacer 24 and is positioned and fixed at a predetermined position with respect to the rail R. In this case, on the opposite side surface 25 where the opening of the rail R is formed, a plurality of holes 23 into which the male screw portion 26 of the fixing member 21 is inserted are elongated in the longitudinal direction of the rail R or parallel to the longitudinal direction. Is formed. Therefore, when adjusting the position of the stopper BS, whether the fixing member 21 is removed from the nut 22 and inserted into any one of the plurality of holes and fixed to the rail R by coupling the nut and the fixing member 21 Alternatively, in a state where the fixing member 21 screwed with the nut 22 is loosened to the extent that the stopper BS moves, the position of the stopper BS is adjusted in the front-rear direction shown in FIG. In a state where the stopper is moved and positioned at a predetermined position, the fixing member 21 is turned by a dedicated tool and tightened to fix the stopper BS to the rail R.
[0029]
In this way, by adjusting the position of the stopper BS behind the rail, the biasing force of the compressed coil spring C at the closing corresponding position s1 of the hood 2 of the front stopper FS is arbitrarily changed, so that the hood jumps up. Adjustment of responsiveness at the time becomes easy. Further, since the rear stopper BS regulates the moving range in which the shoe S moves, the height of the hood 2 when the hood is flipped up can be easily adjusted by determining the position of the stopper BS in the rail. can do. That is, when the space between the hood 2 and the engine 5 is secured to some extent, the position of the stopper BS with respect to the rotation fulcrum O may be adjusted to the shoe side as shown in FIG. On the other hand, when there is not much space between the hood 2 and the engine 5 and the space is narrow, it is necessary to raise the hood 2 further upward. In such a case, as shown in FIG. 10, the shoe S is moved by fixing the position of the stopper BS to the rail R by bringing the position of the stopper BS as close to the rotation fulcrum O as possible. When the opening corresponding position s2 is reached, the first link L1 jumps higher in the stopper BS of FIG. 10 than in FIG. As a result, the height of the hood is further increased to secure a space between the engine 5 and the hood 2, and even when a pedestrian or the like hits the hood 2, the hood 2 is jumped high to absorb the impact force by the hood. Therefore, safety at the time of collision can be ensured.
[0030]
(Sub-operation mechanism 10)
In the present embodiment, a sub-operation mechanism 10 that assists the operation of the main operation mechanism 8 is provided. The sub-operation mechanism 10 includes a motor M serving as a drive source for allowing the movement of the shoe S, and an operation switching mechanism 11 for restricting or canceling the movement of the shoe S by the power of the motor M. And has a function of returning the position of the shoe S from the open corresponding position s2 to the closed corresponding position s1 by moving the shoe S. At the time of such a returning operation of the shoe S, the coil spring C is compressed, and the position of the shoe S can be returned to the home position shown in FIG. In this operation, as shown in FIG. 8, the motor M moves the output shaft Md from which the output from the motor M is output via the speed reduction mechanism Rd as the accessory mechanism Me to the clockwise direction W1 shown in FIG. It is fixed to a hinge bracket B provided integrally with the rail R so that it can be rotated in the direction W2.
[0031]
The clockwise rotation W1 of the motor M corresponds to the moving direction of the shoe S from the closed corresponding position s1 to the open corresponding position s2. On the other hand, the rotation in the counterclockwise direction W2 corresponds to the movement of the shoe S from the open corresponding position s2 to the close corresponding position s1.
[0032]
(Operation switching mechanism 11)
The operation switching mechanism 11 will be described below. The operation switching mechanism 11 is supported by a hinge bracket B as shown in FIG. 4, and rotates around the output shaft Md to change the posture with the movement of the shoe S moving within the rail. It has a disk-shaped lock plate Pr, and a disk-shaped motor plate Pm that is coaxial with the lock plate Pr and is disposed opposite to the back side of the lock plate Pr and rotates by the rotation of the motor M to change the posture.
[0033]
The lock plate Pr has a pressing claw Prc whose center is depressed in a part of the peripheral surface, and the pressing claw Prc is inserted into the shoe S from the side and connected to the connection pin Cp connecting the shoe S and the first link L1 in the front-back direction. By pressing the shoe S, a pressing force is applied to the shoe S, and the shoe S is pressed and moved in a predetermined direction.
[0034]
When the lock plate Pr rotates counterclockwise with the return rotation of the motor M (rotation in the counterclockwise direction W2) by the pressing claw Prc to change the posture, the shoe S is moved from the opening corresponding position s2. The shoe S can be moved to the close corresponding position s1 by applying a pressing force to the connection pin Cp to the close corresponding position s1. Further, the lock plate Pr has two elongated holes Prh at symmetrical positions of the output shaft Md, and the motor pins Pmp project from the side surfaces of the motor plate Pm to the lock plate side in the elongated holes Prh. Is movable in the elongated hole. Therefore, the lock plate Pr can rotate around the output shaft Md and change its posture due to the positional relationship with the motor pin Pmp protruding into the two elongated holes Prh. In this case, when the shoe S is moved from the close corresponding position s1 to the open corresponding position s2, the relative posture change between the motor plate Pm and the lock plate Pr is allowed. On the other hand, when returning the shoe S from the open corresponding position s2 to the close corresponding position s1, the lock plate Pr and the motor plate Pm including the shoe S cooperate to realize an integrated posture change. It is configured to be able to.
[0035]
Further, in addition to the above-described structure, the operation switching mechanism 11 is provided with a port Po for allowing or restricting a change in the posture of the lock plate Pr and the motor plate Pm. The pole Po is rotatably disposed between the lock plate Pr and the motor plate Pm and has a function of holding the attitude (rotational position) of the lock plate Pr, and thus controls the attitude of the hood 2. To be able to do so, a predetermined engagement structure is employed.
[0036]
That is, the pole Po has a substantially L-shape, and is rotatably disposed below the lock plate Pr. In the engagement state of the lock plate Pr with the rear end face Pob of the pole Po, the lock plate Pr is allowed to rotate in the counterclockwise direction W2, but is not allowed to rotate in the clockwise direction W1. A lock claw Prd that exhibits a rotation permitting function is provided integrally with the lock plate Pr on the side opposite to the pressing claw Prc. That is, the lock claw Prd includes a first engagement surface Prd1 that extends substantially in the radial direction of the lock plate Pr, and a second engagement surface Prd2 that is inclined in the circumferential direction and changes continuously in the radial direction. . Further, as shown in FIG. 6, the second engagement surface Prd2 abuts on the L-shaped front end surface Pof of the pole Po, and the line of action of the acting force acting on the pole Po from the second engagement surface Prd2. Is provided on the hinge bracket B so as to be located on the left side shown in FIG. 6 with respect to the rotation axis PoD of the pole Po. In addition, a pole pin Pop protrudes from the rear end portion of the pole Po on the Pob side in a state parallel to the output shaft Md, and the pole pin Pop is integrally formed below the motor plate Pm. In a state in which the protrusion Pmd abuts on the outermost diameter surface Pmd3 as shown in FIG. 6, it is configured to urge clockwise with respect to the rotation axis PoD of the pole Po to generate moments in opposite directions. As a result, the rotation of the lock plate Pr is stopped in the state shown in FIG. 6, and the position of the shoe S in the open position is fixed, so that the hood 2 maintains and maintains the posture in the open position at that time. Can be.
[0037]
The motor plate Pm is provided with a protruding portion Pmd that contacts the pole pin Pop provided integrally with the pole Po and determines the attitude of the pole Po. As shown in FIG. 4, the protruding portion Pmd has an inclined surface Pmd1 where the pole pin Pop contacts the protruding portion Pmd, and an outermost surface Pmd3 where the pole Po contacts clockwise and the pole Po rotates most clockwise. It is formed on the motor plate Pm.
[0038]
Accordingly, the pole Po rotates as the motor plate Pm changes from the state shown in FIG. 4 in which the hood 2 is in the closed position to the state shown in FIG. The attitude of the pole Po is determined by rotating about the axis PoD. In this case, the pole Po is constantly urged in the counterclockwise direction W2 by the torsion coil spring T disposed on the back surface. The rotation of the pole Po is regulated by a rear stopper Bs fixed at a predetermined position in the rail in the posture shown in FIG. 4, and is regulated in a counterclockwise direction, so that the pole pin Pop is connected to the protrusion Pmd of the motor plate Pm. The state shown in FIG. 6 in contact with the outermost diameter surface Pmd3 is the maximum rotation position in the clockwise direction W1.
[0039]
Next, the operation of the present device 1 will be described.
[0040]
(Open operation by lift-up)
In FIG. 4, when the motor M is driven by opening drive and the output shaft Md rotates clockwise W1, the motor plate Pm rotates clockwise W1. When the motor plate Pm rotates clockwise W1, the pole pin Pop rotates clockwise about the rotation axis PoD due to the contact of the protrusion Pmd of the motor plate Pm with the inclined surface Pmd1, and moves toward the outer diameter side. The lock plate Pr and the pole Po are released from being pushed out. As a result, the lock plate Pr is free from the restriction by the pole Po and becomes free to rotate.
[0041]
Then, since the coil spring C disposed in the rail is compressed and contracted in the closed state, the shoe S is immediately actuated by the urging force of the coil spring C when the regulation of the lock plate Pr is permitted. It becomes. Therefore, in such a state, the lock plate Pr is rotated clockwise W1, and the shoe S is instantaneously moved from the closed corresponding position s1 to the open corresponding position s2. In this case, the stop position of the shoe S in the rail is determined by the rear stopper BS. Further, the motor plate Pm is continuously operated, and the pole pin Pop is pushed out to the outer diameter side, and as shown in FIG. The locking portion Prd2 comes into contact with the locking plate Pr and stops in a state locked by the pole Po so as not to rotate in the counterclockwise direction W2. As a result, the hood 2 connected to the first link L1 is instantly jumped up from the closed state shown in FIG. 4 to the open state shown in FIG. 6 and lifted up. Therefore, in the state shown in FIG. 6, for example, when a pedestrian hits the running vehicle 19 or when it is expected that the pedestrian hits the vehicle 19, the lift of the hood 2 is increased. Since the up state can be reliably maintained by the engagement between the pole Po and the lock plate Pr, it is possible to secure a space between the hood 2 and the engine 5 and reduce damage caused by a pedestrian collision. And safety can be ensured.
[0042]
(Close operation from lift-up state)
When the motor M is driven from the state shown in FIG. 6 to return from the open state to the closed state shown in FIG. 4, the motor plate Pm rotates counterclockwise W2. Then, while returning, the state shown in FIG. 5 is obtained. In this state, the front end face Pof of the pole Po is disengaged from the lock claw Prd of the lock plate Pr. At the same time, the motor pin Pmp rotates counterclockwise along the elongated hole Prh of the lock plate Pr, and comes into contact with the counterclockwise end Prh1 of the elongated hole Prh. When the motor plate Pm further rotates in the counterclockwise direction W2, the lock plate Pr is rotated in the counterclockwise direction W2 with the motor pin Pmp in contact with the counterclockwise end Prh1 of the elongated hole Prh. By such an operation, the shoe S is pressed against the urging force of the coil spring C to the left side shown in FIG. 5 by the pressing claw Prc of the lock plate Pr. As a result, the first link L1 and the second link L2 of the link mechanism 9 move in the storage direction in which the hood 2 is closed by the movement of the shoe S to the closed corresponding position s1.
[0043]
In this case, the pole Po is rotated in the counterclockwise direction W2 by the biasing force of the torsion coil spring T provided on the rear surface, but is rotated clockwise W1 by the rear surface of the lock plate Pr. When the lock plate Pr reaches the predetermined position, as shown in FIG. 7, the rear end Pob of the pole Po and the first engagement surface Prd1 of the lock plate Pr are engaged with each other by the urging force of the torsion coil spring T. Become. Thereafter, the motor plate Pm further rotates clockwise W1, returns to the closed state shown in FIG. 4, and completes a series of operations.
[0044]
【The invention's effect】
According to the present invention, it is possible to easily change the responsiveness of the vehicle hood jumping from the closed position to the open position. This adjusts the urging force of the urging member that operates the link mechanism by a simple method of adjusting the position of the first locking member that locks the urging member in the rail for each vehicle type having a different fender length. Responsiveness can be easily changed for each vehicle type. Therefore, it is not necessary to adjust the explosive amount of the inflator as in the related art for adjusting the responsiveness of the vehicle hood when the vehicle hood is flipped, and safety can be improved.
[0045]
In this case, the first locking member is inserted from the end of the rail, and if a polygonal hole is formed in the insertion direction, the position of the first locking member in the rail is adjusted using a special tool with respect to the polygonal hole. It can be easily adjusted.
[0046]
Further, when the link member is rotated by the urging force of the urging member to move the vehicle hood from the closed position to the opened position raised, the second locking member that determines the open position can be adjusted in the rail. If provided, the height of the vehicle hood at the open position can be easily adjusted by adjusting the position of the second locking member in the rail.
[0047]
Further, if the second locking member is fitted in the rail and is fixed so as to be adjustable by the fixing member from the side of the rail, by adjusting the position of the fixing member in the rail from the side of the rail. The position of the second locking member can be determined and fixed in the rail, and the height of the vehicle hood can be easily adjusted.
[0048]
Furthermore, if an adjusting member is interposed between the first locking member and the urging member, even if the first locking member is moved within the rail, the first locking member and the urging member can be moved. Since the adjusting member is interposed therebetween, when the position of the first locking member in the rail is adjusted, the adjusting force of the first locking member does not directly act on the urging member, and the first locking member is not used. The members can be adjusted with good workability.
[Brief description of the drawings]
FIG. 1 is a layout view when a vehicle hood flip-up device according to an embodiment of the present invention is attached to a vehicle.
FIG. 2 is a side view showing a non-operating state (closed position) of the vehicle hood flip-up device according to the embodiment of the present invention.
FIG. 3 is a side view showing an operation state (open state) of the vehicle hood flip-up device according to the embodiment of the present invention.
FIG. 4 is a side view of the vehicle hood flip-up device shown in FIG. 2;
FIG. 5 is a side view of the vehicle hood flip-up device shown in FIG. 3;
FIG. 6 is a side view showing a state where the hood is held at an open position from the state shown in FIG. 5;
FIG. 7 is a side view showing a state of returning from the state shown in FIG. 5 to the closed position.
FIG. 8 is a cross-sectional view of the vicinity of an operation switching mechanism of the vehicle hood flip-up device.
FIG. 9 is a side view of a state in which the position of a front stopper has been moved from the state shown in FIG. 4;
FIG. 10 is a side view of a state in which the position of the rear stopper is further moved from the state shown in FIG. 9;
FIG. 11 is an explanatory view showing fixing of a rear stopper and a rail.
[Explanation of symbols]
1 Vehicle hood lifting device
2 Hood (vehicle hood)
3 body (vehicle body)
9 Link mechanism
11 Operation switching mechanism (drive means)
14 Coil spring (biasing member)
15 Screw part
16 hexagonal holes (polygonal holes)
17 Washer (adjustment member)
19 vehicles
21 bolt (fixing member)
FS stopper (first locking member)
BS stopper (second locking member)
O Rotating fulcrum (fixed point)
R rail
S shoe

Claims (5)

A rail fixed to the vehicle body,
A shoe slidable in the rail,
A first locking member disposed in the rail;
An urging member disposed between the first locking member and the shoe;
One end is connected to the vehicle hood side, and the other end is fixed to the shoe, pivots around a fixed point, and moves the shoe to jump the vehicle hood from a closed position to an upper open position. Link mechanism to raise,
A vehicle hood flip-up device comprising: a driving unit that allows the shoe to move;
A hood flip-up device for a vehicle, wherein a screw portion is formed inside the rail, and the first locking member is screwed to the screw portion so as to be movable toward the link member. 2. The vehicle hood flip-up device according to claim 1, wherein the first locking member is inserted from the end of the rail, and a polygonal hole is formed in an insertion direction. 3. When the link member is rotated by the urging force of the urging member to move the vehicle hood from the closed position to the open position, a second locking member that determines the open position is adjustable within the rail. The vehicle hood raising device according to claim 2, wherein the vehicle hood raising device is provided on the vehicle. 2. The vehicle hood flip-up device according to claim 1, wherein the second locking member is fitted in the rail, and is fixed by a fixing member from a side of the rail so as to be adjustable. 3. The hood flip-up device for a vehicle according to claim 1, wherein an adjusting member is interposed between the first locking member and the urging member.

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