JP2010179734A - Hood structure for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hood structure for a vehicle, capable of maintaining the shape and strength of a hood and reducing the weight of the hood. <P>SOLUTION: This hood structure includes a hood panel 1 disposed as an outside face of a vehicle body. The hood panel 1 has a hood body 11. A wire cable 2 is extended between the terminals of an inside face in the hood body 11. By straining the wire cable 2 and curving the hood body 11, a tensile curved surface is formed in the hood panel 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle hood structure.

  As a hood structure provided with a hood such as a bonnet that covers an engine room in a vehicle, a hood structure for a vehicle in which an inner panel is attached to an outer panel is conventionally known (for example, see Patent Document 1). In this vehicular hood structure, the inner panel is attached to the outer panel to form the hood, thereby improving the impact absorption when an object collides with the hood.

Japanese Patent No. 4076487

  However, in the vehicle hood structure disclosed in Patent Document 1, since the hood has an outer panel and an inner panel, there is a concern that the weight may increase and the production process may be multi-stepped. The Therefore, it is conceivable to form the hood by the outer panel without using the inner panel. By omitting the inner panel, it is possible to reduce weight and improve productivity.

  However, when the hood without the inner panel is used, there is no member for maintaining the shape and strength of the hood, which makes it difficult to maintain the shape and strength of the hood. In order to maintain the shape and strength of the hood, it is conceivable to increase the resistance by increasing the thickness of the outer panel that forms the hood. However, if the thickness of the outer panel is increased, eventually the hood There was a problem that the weight could not be reduced.

  Therefore, an object of the present invention is to provide a vehicle hood structure that can maintain the shape and strength of the hood and can reduce the weight of the hood.

  A vehicle hood structure according to the present invention that has solved the above-described problems is a vehicle hood structure that includes a hood panel disposed as an outer side surface of a vehicle body, and a wire is stretched between terminals on the inner side surface of the vehicle body in the hood panel. And a tension curved surface is formed on the hood panel by bending the wire by tensioning the wire.

  In the hood structure for a vehicle according to the present invention, a tension curved surface is formed on the hood panel by stretching a wire between terminals on the inner surface of the vehicle body in the hood panel and bending the wire by bending the wire. For this reason, since the hood is curved by the tension of the wire, the shape and strength of the hood can be maintained by the hood panel without using the inner panel. Moreover, since the wire is used without using the inner panel, it can contribute to weight reduction of the hood.

  Here, it can be set as the aspect provided with the tension adjustment mechanism which adjusts the tension | tensile_strength of a wire.

  Thus, by providing the tension adjusting mechanism for adjusting the tension of the wire, the tension of the wire can be easily adjusted. Here, since the shape and strength of the hood can be adjusted by the tension of the wire, the shape and strength of the hood can be easily adjusted by using the tension adjusting mechanism.

  Further, the tension adjusting mechanism includes a slit member formed with a plurality of slit portions that are spaced apart from each other along the extending direction of the wire, and an engaging portion that is provided on the hood panel and engages the slit member. It can be set as the aspect provided with.

  As described above, by using the slit member in which the plurality of slit portions arranged apart from each other in the extending direction of the wire is used, the slit to be engaged with the engaging portion is selected from the plurality of slits. Only the length of the wire will be adjusted. Therefore, the length of the wire can be easily adjusted.

  Further, the tension adjustment mechanism includes a spiral slit member in which a spiral groove centered in the extending direction of the wire is formed, an engagement portion provided in the hood panel and engaged with the spiral groove member, It can be set as the aspect provided with.

  In this way, the length of the wire can be adjusted simply by changing the screwing amount of the spiral groove member by using the spiral groove member formed with the spiral groove centering on the extending direction of the wire. It becomes. Therefore, the length of the wire can be easily adjusted.

  The hood panel includes a hood panel main body and a flange portion that is formed on a side portion of the hood panel main body and serves as a terminal of the hood panel. The thickness of the flange portion is larger than the thickness of the hood panel main body. It can be set as the aspect made thick.

  As described above, the thickness of the flange portion is larger than the thickness of the hood panel main body. For this reason, the rigidity at the time of tensioning a wire can be secured, and the curved surface shape of the hood can be adjusted with high accuracy.

  Furthermore, the flange part can be made into the aspect thickened rather than the thickness of the hood panel main body by bending the part extended from the hood panel main body.

  Thus, the flange portion is thicker than the thickness of the hood panel main body by bending a portion extending from the hood panel main body, whereby a thick flange portion can be easily formed.

  Moreover, it can be set as the aspect made thicker than the thickness of a hood panel main body by attaching a reinforcement member to the part extended from the hood panel main body.

  Thus, the flange can be easily reinforced by attaching the reinforcing member to the flange portion so as to be thicker than the thickness of the hood panel main body.

  In addition, the hood panel includes a hood panel main body and a flange portion that is formed on a side portion of the hood panel main body and serves as a terminal of the hood panel, and a bead is formed on the lunge portion. .

  Thus, the flange can be easily reinforced by forming the bead in the flange portion.

  Furthermore, it can be set as the aspect which comprises the wire cutting means which cut | disconnects a wire, and cuts a wire by a wire cutting means, when the outer side load applied to a hood panel becomes a predetermined threshold value.

  The hood panel is curved so that the hood panel swells outward due to the tension of the wire. Here, when the outer load applied to the hood panel reaches a predetermined threshold value, the curved surface of the hood panel can be easily retracted by cutting the wire by the wire cutting means, and the shock absorbing performance can be improved. Can be increased. Here, the “outer load applied to the hood panel” in the present invention is calculated based on, for example, the relative relationship between the obstacle and the vehicle in addition to the outer load applied to the actual hood panel, and applied to the hood panel. Possible external loads are also included.

  Alternatively, a plurality of wires are stretched on the hood panel, and the plurality of wires can be cut sequentially each time the outer load applied to the hood panel reaches a predetermined threshold value.

  Thus, whenever the outer load applied to the hood panel reaches a predetermined threshold value, the hood panel can be retracted according to the magnitude of the outer load by sequentially cutting the plurality of wires. Therefore, the impact absorption performance can be improved accordingly.

  In addition, the wire cutting means may be disposed on the opposite side of the hood panel with the wire interposed therebetween, and may include a protruding portion that intersects with the wire stretching direction and faces the wire. it can.

  In this way, the wire cutting means is a protrusion disposed facing the direction facing the wire, so that the wire at the site retracted due to an external load is cut. Therefore, the wire at the position where the load on the outer surface of the hood panel is applied can be cut, and the shock absorbing performance can be enhanced.

  Furthermore, it can be set as the aspect which is equipped with the outer load acquisition means which acquires the outer load applied to a hood panel, and cuts a wire when the outer load acquired by the outer load acquisition means exceeds a predetermined threshold value. .

  As described above, by acquiring the outer load by the outer load acquisition means, for example, a pre-crash sensor provided separately for collision detection can be used as the outer load acquisition means.

  Moreover, it can be set as the aspect provided with the tension | tensile_strength adjustment means which is equipped with the adjustment wire which adjusts the tension | tensile_strength of an adjustment wire with the wire attached to the terminal of a food panel entangled with a wire.

  In this way, it is possible to adjust the tension of the wire just by adjusting the length of the adjustment wire by providing the adjustment wire that is attached to the end of the hood panel entangled with the wire and adjusts the tension of the wire. it can.

  Furthermore, it is provided with a pre-crash wire that connects the front and rear terminals of the vehicle body in the hood panel, and includes a pre-crash wire pulling means that pulls the pre-crash wire when a collision between the vehicle body and an obstacle is predicted. be able to.

  When the collision between the vehicle body and an obstacle is predicted, the hood panel is bent so that it protrudes outward by pulling the pre-crash wire, and the edge of the hood panel is in the vicinity of the hood panel For example, when the hood panel is an engine hood, the hood panel moves away from the front window. For this reason, it is possible to prevent the hood panel from colliding with the front window when a collision occurs in the vehicle body.

  In addition, an actuator that moves in a direction that intersects the direction in which the pre-crash wire is stretched and a drive unit that moves the actuator are provided. When a collision between the vehicle body and an obstacle is predicted, the actuator is moved by the drive unit. It can be set as the mode made to do.

  Thus, by providing an actuator that moves in a direction that intersects the direction in which the pre-crash wire is stretched, it is possible to immediately tension the pre-crash wire when a collision occurs in the vehicle body. Therefore, the contact of the hood panel with the front window can be suitably prevented.

  Or it can be set as the aspect which formed the heavy weight part in the wire.

  Thus, by forming the heavy weight portion on the wire, the resonance of the wire due to the vibration of the vehicle body can be suppressed. Therefore, the shape change of the hood accompanying the vibration of the wire can be reduced.

  Moreover, the heavy weight part can be formed by attaching a weight, and the shape of the weight can be set according to the vibration direction of the wire.

  Thus, when the shape of the weight is set according to the vibration direction of the wire, it can contribute to the suppression of vibration according to various aspects. As the shape of the weight, for example, the cross-sectional shape may be a circle, an ellipse, a rectangle, a rectangle, a triangle, or the like.

  Furthermore, the large weight part can be made into the aspect currently formed by making a wire into a thick diameter.

  In this way, by forming the large weight portion locally with the wire having a large diameter, the wire itself has vibration damping properties, and the shape change of the hood can be suppressed.

  In addition, the wire may be configured such that a large weight part is formed of a metal and a part other than the heavy weight part is formed of a lightweight material.

  Thus, while forming a wire with a lightweight material with strength, such as resin, a metal material can be used as a large weight part.

  In addition, a vehicle hood structure according to the present invention that has solved the above problems is a vehicle hood structure that includes a hood panel disposed as an outer side surface of a vehicle body, and is pulled between terminals on the inner side surface of the vehicle body in the hood panel. A tensile curved surface is formed on the hood panel by stretching the material and tensioning the traction material to curve the hood.

  In the hood structure for a vehicle according to the present invention, a pulling curved surface is formed on the hood panel by bending the hood by stretching a traction material between terminals on the inner side surface of the vehicle body in the hood panel. Since the hood is bent by the tension of the wire by adjusting the traction agent in this way, the shape and strength of the hood can be maintained by the hood panel without using the inner panel. Moreover, since the traction material is used without using the inner panel, it is possible to contribute to weight reduction of the hood.

  Here, the tension adjusting mechanism includes a slit member formed with a plurality of slit portions spaced apart along the extending direction of the traction material, and an engagement provided on the hood panel and engaged with the slit member. And an aspect provided with a part.

  Thus, by using a slit member formed with a plurality of slit portions that are spaced apart along the extending direction of the traction material, a slit to be engaged with the engaging portion is selected from the plurality of slits. Simply doing this will adjust the length of the traction material. Therefore, the length of the traction material can be easily adjusted.

  According to the vehicle hood structure of the present invention, the shape and strength of the hood can be maintained, and the weight of the hood can be reduced.

It is a perspective view of the hood structure for vehicles concerning a 1st embodiment. It is a front sectional view of the hood structure for vehicles concerning a 1st embodiment. It is an expansion perspective view of the junction position of a panel main body and a wire cable. It is a front sectional view of the hood structure for vehicles concerning a 2nd embodiment. (A) The expansion exploded perspective view of the attachment part of the wire cable with respect to a hood panel, (b) The expansion perspective view of the attachment part of the wire cable with respect to a hood panel. It is a perspective view of the hood structure for vehicles concerning a 3rd embodiment. It is a front sectional view of a tension adjusting member. It is a principal part front sectional view of the hood structure for vehicles concerning a 4th embodiment. It is a principal part expansion disassembled perspective view of the hood structure for vehicles which concerns on 5th Embodiment. It is a front sectional view of the hood structure for vehicles concerning a 5th embodiment. It is a principal part expansion disassembled perspective view of the hood structure for vehicles which concerns on 6th Embodiment. It is a front sectional view of the hood panel for vehicles concerning a 7th embodiment. It is a front sectional view of the hood panel for vehicles concerning an 8th embodiment. It is a front sectional view of the hood panel for vehicles concerning a 9th embodiment. It is a disassembled perspective view of the vehicle hood panel which concerns on 9th Embodiment. It is a perspective view of the food panel for vehicles concerning a 10th embodiment. It is the II sectional view taken on the line of FIG. It is the reverse view which looked at the hood structure for vehicles concerning an 11th embodiment from the back side. It is the II-II sectional view taken on the line of FIG. (A) is a schematic diagram which shows the state which the object collided with the hood panel, (b) is a graph which shows the change of the load with respect to a deformation | transformation amount when a wire cable does not cut | disconnect when the collision occurs. (A) is a schematic diagram which shows the state which the object collided with the hood panel, (b) is a graph which shows the change of the load with respect to the deformation | transformation amount in case a some wire cable cuts | disconnects sequentially when the collision occurs. . It is a front sectional view of the hood structure for vehicles concerning a 12th embodiment. It is a typical perspective view of the hood structure for vehicles concerning a 13th embodiment. The vehicle hood structure which concerns on 13th Embodiment is shown, (a) is a typical perspective view which shows the state before shortening the length of a subwire cable, (b) shortened the length of the subwire cable. It is a typical perspective view which shows a back state. It is a typical perspective view of the hood structure for vehicles which provided the length adjustment mechanism in each of several wire cables. The vehicle hood structure which concerns on 14th Embodiment is shown, (a) is a typical perspective view before the length adjustment of a subwire cable, (b) is a schematic perspective view after the length adjustment of a subwire cable. It is. The vehicle hood structure which concerns on 15th Embodiment is shown, (a) is a schematic perspective view before the length adjustment of a 3rd wire cable, (b) is a schematic perspective view after the length adjustment of a 3rd wire cable. It is. The vehicle hood structure which concerns on 16th Embodiment is shown, (a) is a typical perspective view before the length adjustment of a subwire cable, (b) is a schematic perspective view after the length adjustment of a subwire cable. It is. The vehicle hood structure provided with the main wire cable in which the knot is not formed is shown, (a) is a schematic perspective view before adjusting the length of the secondary wire cable, and (b) is after adjusting the length of the secondary wire cable. It is a typical perspective view. It is a partially cutaway perspective view of a vehicle provided with a vehicle hood structure according to a seventeenth embodiment. The hood structure for vehicles concerning a 17th embodiment is shown, (a) is a sectional side view before operating a motor, and (b) is a sectional side view after operating a motor. It is a figure which shows the state along the time-dependent change at the time of the collision of the vehicle hood structure which concerns on 17th Embodiment. It is a reverse view which shows typically the state which looked at the hood structure for vehicles concerning 18th Embodiment from the back side. It is the II-II sectional view taken on the line of FIG. It is a figure which shows a 2-degree-of-freedom vibration system model. It is a graph which shows the time-dependent change of the amplitude in a 2 degrees of freedom vibration system. (A)-(f) is sectional drawing which shows the cross-sectional shape of a wire cable. (A)-(d) is sectional drawing which shows the cross-sectional shape of a wire cable. (A)-(c) is a side view which shows the side surface shape of a wire cable. It is a side view which shows the example of another wire cable.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted. For the convenience of illustration, the dimensional ratios in the drawings do not necessarily match those described.

[First Embodiment]
FIG. 1 is a perspective view of a vehicle hood structure according to the first embodiment, and FIG. 2 is a front sectional view of the vehicle hood structure.

  As shown in FIGS. 1 and 2, the vehicle hood structure according to the present embodiment includes a hood panel 1 that covers an engine room disposed on an outer side surface of a vehicle body (not shown) and two hood panels 1 that are stretched on the hood panel 1. The wire cable 2 is provided. The wire cable 2 forms the wire or traction material of the present invention. The hood panel 1 has a panel main body 11, and flanges 12 are formed at both ends of the panel main body 11. The flange 12 is formed by folding back the panel body 11. For this reason, the panel main body 11 and the flange 12 are integrally formed.

  Moreover, the flange 12 is set as the aspect provided with the horizontal surface arrange | positioned substantially horizontal in the state which the hood panel 1 closed after being attached to the vehicle body. As shown in FIG. 3, engagement holes 13 for attaching the wire cable 2 are formed in the flanges 12 provided at both ends of the panel body 11, respectively. The engagement holes 13 are formed in the flanges 12 on both sides of the panel body 11 so as to be separated from each other in the front-rear direction of the vehicle to which the hood panel 1 is attached. For this reason, the two wire cables 2 are respectively stretched along the width direction of the vehicle, and the two wire cables 2 are arranged apart from each other in the front-rear direction of the vehicle. 1 and 3, the front-rear direction of the vehicle when the hood panel 1 is attached to the vehicle is indicated as the X direction, the left-right direction of the vehicle as the Y direction, and the vertical direction as the Z direction.

  The engagement hole 13 is formed in a state of penetrating the flange 12 and includes a large diameter portion 13A and a narrow portion 13B. The large diameter portion 13A and the narrow portion 13B are formed continuously. Among these, the large-diameter portion 13A has a substantially circular shape, and the narrow-width portion 13B is formed in a slit shape. The width of the narrow portion 13B is smaller than the diameter of the large diameter portion 13A, and the longitudinal direction of the narrow portion 13B is formed in a direction along the front-rear direction of the vehicle to which the hood panel 1 is attached.

  Furthermore, the wire cable 2 includes a cable main body 21 and engagement balls 22 attached to both ends of the cable main body 21. The cable body 21 is formed of a metal wire such as a steel wire or a resin wire made of resin. Further, the engaging spheres 22 are firmly fixed to the cable body 21 with respect to both ends.

  The engagement sphere 22 is made of, for example, a lead sphere, and the diameter thereof is smaller than the diameter of the large diameter portion 13A in the engagement hole 13 and larger than the width of the narrow portion 13B. The engagement cable 22 in the wire cable 2 is engaged with the engagement hole 13 in the hood panel 1, whereby the wire cable 2 is stretched on the hood panel 1.

  Before the wire cable 2 is attached to the hood panel 1, the length of the cable body 21 is shorter than the length of the panel body 11 in the width direction. Further, when the wire cable 2 is attached to the hood panel 1, the cable main body 21 in the wire cable 2 is stretched between the both side terminals of the panel main body 11 in the hood panel 1. For this reason, the panel main body 11 in the hood panel 1 is warped outward than before the wire cable 2 is stretched and is in a curved state.

Next, a procedure for attaching the wire cable 2 to the hood panel 1 will be described.
When the wire cable 2 is attached to the hood panel 1, the engagement ball 22 in the wire cable 2 is placed on the large diameter portion 13 </ b> A of the engagement hole 13 in one of the flanges 12 provided at both ends of the panel body 11. Insert from. Next, the engagement ball 22 is moved backward, and the end of the cable body 21 is moved from the large diameter portion 13A of the engagement hole 13 to the narrow portion 13B. Thus, one end of the wire cable 2 is engaged with the engagement hole 13.

  Subsequently, when one end portion of the wire cable 2 is engaged with the engagement hole 13, the wire cable 2 is pulled from the other end side, and the engagement formed on the flange 12 provided on the other end side of the hood panel 1. An engagement ball 22 provided on the other end side of the wire cable 2 is inserted into the large diameter portion 13 </ b> A of the joint hole 13. At this time, when the wire cable 2 is pulled, the panel body 11 of the hood panel 1 is bent by the tension of the wire cable 2.

  Then, the engagement ball 22 inserted in the large diameter portion 13A of the engagement hole 13 is moved in the direction of the narrow portion 13B, and the wire cable 2 is attached to the hood panel 1. Here, when the wire cable 2 is attached, the panel main body 11 is bent, and the cable main body 21 in the wire cable 2 is tensioned by a reaction force against the bending of the panel main body 11. Thus, the wire cable 2 is stretched.

  Then, the effect | action of the hood structure for vehicles which concerns on this embodiment is demonstrated. In the vehicle hood structure according to the present embodiment, the wire cable 2 is stretched between the terminals on the inner side surface of the vehicle body in the hood panel 1, the wire cable 2 is tensioned to bend the panel body 11 of the hood panel 1, and A tensile curved surface is formed on the panel. For this reason, since the hood panel 1 is curved by the tension of the cable body 21 in the wire cable 2, the shape and strength of the hood can be maintained by the hood panel 1 without using the inner panel. Moreover, since the wire cable 2 is used without using an inner panel, it can contribute to weight reduction of the whole hood.

  At this time, since it is not necessary to use an inner panel, the operation | work etc. at the time of providing an inner panel can be made unnecessary. Specifically, it is possible to eliminate the need for an outer peripheral adhesive and its application device. Furthermore, an outer periphery hemming type or the like can be eliminated. As a result, man-hours and costs can be reduced.

  In the vehicle hood structure according to the present embodiment, the engagement hole 13 is formed in the flange 12 of the hood panel 1, and the engagement sphere 22 of the wire cable 2 is inserted into the engagement hole 13 so that the wire cable 2 is attached to the hood. It is attached to both ends of panel 1. For this reason, the wire cable 2 can be easily stretched with respect to the hood panel 1 without performing welding or the like.

  Further, the panel body 11 of the hood panel 1 is curved by the tension of the wire cable 2, and the curved shape is maintained. For this reason, the curved shape of the panel main body 11 can be easily adjusted only by adjusting the tension of the wire cable 2. In addition to the large-diameter portion 13A, a narrow portion 13B is formed in the engagement hole 13. By forming the narrow portion 13 </ b> B, it is possible to prevent the engagement ball 22 in the wire cable 2 from coming out of the engagement hole 13.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. The vehicle hood structure according to the present embodiment is mainly different from the first embodiment in the manner of attaching the wire cable. FIG. 4 is a front sectional view of the vehicle hood structure according to the present embodiment, FIG. 5A is an enlarged exploded perspective view of a wire cable attachment portion with respect to the hood panel, and FIG. 4B is a wire cable attachment portion with respect to the hood panel. FIG.

  As shown in FIG. 4, the vehicle hood structure according to the present embodiment includes a hood panel 1 that covers an engine room that is disposed on an outer surface of a vehicle body (not shown), and a wire cable 2 that is stretched over the hood panel 1. ing. The hood panel 1 has a panel body 11, and L-shaped flanges 14 are formed on both side terminals of the panel body 11. The L-shaped flange 14 is formed by folding the panel body 11 in two stages. For this reason, the panel body 11 and the L-shaped flange 14 are integrally formed.

  The L-shaped flange 14 has a horizontal portion 14A having a horizontal surface that is horizontally disposed with the hood panel 1 closed when attached to the vehicle body, and a vertical portion 14B having a vertical surface that is vertically disposed. It is an aspect. An engaging portion 15 is formed in the vertical portion 14B of the L-shaped flange 14 as shown in FIG.

  The engaging portion 15 has a shape cut out along the rising direction (vertical direction) of the vertical portion 14B. The engaging portion 15 is formed by cutting out the lower end portion of the vertical portion 14B, a straight portion 15A cut out upward, and a locking hole 15B formed in the upper end portion. It has.

  The wire cable 2 includes a cable main body 21, and engaging members 23 are attached to both ends of the cable main body 21. The engaging member 23 includes a cylindrical portion 23A and a constricted portion 23B formed at a substantially central position in the height direction of the cylindrical portion 23A. The end of the cable body 21 is fixed to the tip of the cylindrical portion 23A. In addition, the diameter of the constricted portion 23B is shorter than the diameter of the cylindrical portion 23A.

  Further, the diameter of the locking hole 15B in the engaging portion 15 is larger than the width of the straight portion 15A. Further, the width of the straight portion 15 </ b> A is smaller than the width of the constricted portion 23 </ b> B in the engaging member 23. Further, the diameter of the locking hole 15B is larger than the width of the constricted portion 23B and smaller than the diameter of the cylindrical portion 23A. Then, as shown in FIG. 5B, one end of the wire cable 2 is engaged with the engaging portion 15.

  When the wire cable 2 is attached to the hood panel 1, the engagement member 23 in the wire cable 2 is moved down to the engagement portion 15 in one of the L-shaped flanges 14 provided at both ends of the panel body 11. Insert from the side. Next, the engaging member 23 is moved upward. Thus, one end of the wire cable 2 is engaged with the engaging portion 15.

  Thereafter, as in the first embodiment, the wire cable 2 is pulled from the other end side. Then, the engaging member 23 provided on the other end side of the wire cable 2 is inserted into the engaging portion 15 formed on the L-shaped flange 14 provided on the other end side of the hood panel 1. At this time, when the wire cable 2 is pulled, the panel body 11 of the hood panel 1 is bent by the tension of the wire cable 2.

  Then, the engaging member 23 inserted into the engaging portion 15 is moved upward, and the wire cable 2 is attached to the hood panel 1. Here, when the wire cable 2 is attached, the panel main body 11 is bent, and the cable main body 21 in the wire cable 2 is tensioned by a reaction force against the bending of the panel main body 11. Thus, the wire cable 2 is stretched.

  In the vehicle hood structure according to the present embodiment, the hood panel 1 is curved by the tension of the cable body 21 in the wire cable 2 as in the first embodiment, so that the hood panel can be used without using the inner panel. 1 can maintain the shape and strength of the hood. Moreover, since the wire cable 2 is used without using an inner panel, it can contribute to weight reduction of the whole hood. Further, an engagement member 23 is attached to the tip of the wire cable 2. Since the engaging member 23 includes the cylindrical portion 23A and the constricted portion 23B, the engagement member 23 can be easily fixed to the cable body 21.

[Third Embodiment]
Subsequently, a third embodiment of the present invention will be described. The vehicle hood structure according to the present embodiment is mainly different from the first embodiment in that a tension adjusting member is provided on the wire cable. FIG. 6 is a perspective view of the vehicle hood structure according to the present embodiment, and FIG. 7 is a front sectional view of the tension adjusting member.

  As shown in FIG. 6, the vehicle hood structure according to the present embodiment includes a hood panel 1 that covers an engine room that is disposed on an outer surface of a vehicle body (not shown), and two wire cables that are stretched on the hood panel 1. 2 is provided. The food panel 1 has the same configuration as that of the first embodiment.

  The wire cable 2 stretched on the hood panel 1 includes a cable main body 21 shown in FIG. 3, and engaging balls 22 are fixed to both ends of the cable main body 21. These points are the same as those in the first embodiment. Furthermore, in the present embodiment, a tension adjusting member 30 is provided at a midway position in the length direction of the cable body 21. The cable main body 21 includes two cable main bodies 21A and 21B with the tension adjusting member 30 interposed therebetween.

  The tension adjusting member 30 includes a casing member 31 and an inner member 32 as shown in FIG. The casing member 31 is a hollow member whose outer shape is a cylindrical shape, and the left surface, which is one of the left and right end surfaces, is closed, and the right surface, which is the other surface, is open. The other end of the first cable body 21A is joined to the left surface of the casing member 31. One end of the first cable main body 21 </ b> A is engaged with an engagement hole 13 formed in one flange 12 of the hood panel 1. Furthermore, an internal thread portion is formed inside the casing member 31, and the internal thread portion is formed up to the lower open surface of the casing member 31.

  On the other hand, the inner member 32 is a member whose outer shape is cylindrical, and the other end of the second cable body 21B is joined to the upper surface, which is one of the upper and lower end surfaces. One end portion of the second cable body 21B is engaged with an engagement hole 13 formed in the other flange 12 of the hood panel 1. Further, a male screw portion is formed on the outer peripheral surface of the casing member 31, and the male screw portion is formed up to the lower surface of the inner member 32.

  A male screw portion formed in the inner member 32 is screwed into the female screw portion formed in the casing member 31. For this reason, the cable body 21 is formed by joining the first cable body 21 </ b> A and the second cable body 21 </ b> B by the tension adjusting member 30.

  Further, in the tension adjusting member 30, a female screw portion is formed inside the casing member 31, a male screw portion is formed outside the inner member 32, and the male screw portion is screwed into the female screw portion, whereby the casing member 31 and the inner member 32 are formed. And are joined. For this reason, the length of the wire cable 2 can be adjusted by adjusting the screwing amount of the inner member 32 with respect to the casing member 31.

  Subsequently, the operation of the vehicle hood structure according to the present embodiment will be described. The vehicle hood structure according to the present embodiment is similar to the first embodiment in that the hood panel 1 is subjected to the tension of the cable body 21 in the wire cable 2. Therefore, the shape and strength of the hood can be maintained by the hood panel 1 without using the inner panel. Moreover, since the wire cable 2 is used without using an inner panel, it can contribute to weight reduction of the whole hood.

  In the vehicle hood structure according to the present embodiment, the wire cable 2 is provided with the tension adjusting member 30. In the tension adjusting member 30, the distance between the wire cables 2 joined to the casing member 31 and the inner member 32 can be adjusted by rotating the inner member 32 relative to the casing member 31. As a result, the length of the wire cable 2 is adjusted, and the tension of the wire cable 2 is adjusted. In this way, the tension of the wire cable 2 can be adjusted only by rotating the inner member 32 relative to the casing member 31. Therefore, the tension of the wire cable 2 can be adjusted very easily.

[Fourth Embodiment]
Subsequently, a fourth embodiment of the present invention will be described. The vehicle hood structure according to the present embodiment differs from the third embodiment in the configuration of the tension adjusting member. As shown in FIG. 8, the tension adjusting member 30 </ b> A in the vehicle hood structure according to the present embodiment includes a casing member 31 and a stud bolt 33. In this embodiment, the cable body 21 has a single configuration. The casing member 31 is the same as that shown in FIG. 7, and the other end of the cable body 21 is joined to the upper surface thereof.

  The stud bolt 33 is erected on the vertical portion 14B of the L-shaped flange 14 in the hood panel 1 according to the second embodiment. The stud bolt 33 is erected at a position where the engaging portion 15 is formed in the L-shaped flange 14 in the second embodiment. The engaging portion 15 is not formed in the vertical portion 14B of the L-shaped flange 14 on which the stud bolt 33 is erected. The male screw portion formed on the stud bolt 33 is screwed into the female screw portion formed on the casing member 31.

  In the vehicle hood structure according to the present embodiment, the hood panel 1 is curved by the tension of the cable body 21 in the wire cable 2 as in the first embodiment, so that the hood panel can be used without using the inner panel. 1 can maintain the shape and strength of the hood. Moreover, since the wire cable 2 is used without using an inner panel, it can contribute to weight reduction of the whole hood. Furthermore, the wire cable 2 is provided with a tension adjusting member 30 </ b> A, and the tension adjusting member 30 </ b> A includes a stud bolt 33. Even if the tension adjusting member 30 </ b> A of this aspect is used, the tension of the wire cable 2 can be easily adjusted.

[Fifth Embodiment]
Subsequently, a fourth embodiment of the present invention will be described. The vehicle hood structure according to the present embodiment differs from the third embodiment in the configuration of the tension adjusting member. As shown in FIG. 9, the tension adjusting member 30B according to the present embodiment includes a plurality of cylindrical portions 34A and a constricted portion 34B formed between the cylindrical portions 34A. The tension adjusting member 30B is formed in the same manner as the embodiment in which a plurality of cylindrical portions 23A and constricted portions 23B of the engaging member 23 (see FIG. 5) in the second embodiment shown in FIG. 5 are provided. .

  Moreover, the L-shaped flange 14 provided with the horizontal part 14A and the vertical part 14B is formed in the terminal of the food panel 1. Furthermore, the engaging part 15 provided with the linear part 15A and the locking hole 15B is formed in the vertical part 14B. The width of the linear portion 15A in the engaging portion 15 is smaller than the width of the constricted portion 34B in the tension adjusting member 30B. Further, the diameter of the locking hole 15B is larger than the width of the constricted portion 34B and smaller than the diameter of the cylindrical portion 34A.

  Furthermore, as shown in FIG. 10, the tension adjusting member 30 </ b> B is attached to one end side of the cable body 21 in the wire cable 2. On the other hand, an engagement member 23 shown in FIG. 5 is attached to one end side of the cable body 21 in the wire cable 2.

  In the vehicle hood structure according to the present embodiment having such a configuration, the inner panel is used because the hood panel 1 is bent by the tension of the cable body 21 in the wire cable 2 as in the first embodiment. Even if not, the shape and strength of the hood can be maintained by the hood panel 1. Moreover, since the wire cable 2 is used without using an inner panel, it can contribute to weight reduction of the whole hood.

  Further, a tension adjusting member 30 </ b> B is attached to one end side of the cable body 21 in the wire cable 2. Of the plurality of constricted portions 34B in the tension adjusting member 30B, the length of the wire cable 2 is selected by appropriately selecting the constricted portion 34B that engages with the engaging portion 15 formed in the L-shaped flange 14 in the hood panel 1. Can be adjusted easily. As a result, the tension of the wire cable 2 can be adjusted very easily.

  Here, the tension adjusting member 30 </ b> B is attached to one end side of the cable body 21 and the engaging member 23 is attached to the other end side, but the tension adjusting member 30 </ b> B can be attached to both ends of the cable body 21. Here, by attaching the tension adjusting member 30B to the one end side of the cable main body 21, the tension adjusting member 30B is a more complicated part than the engaging member 23, so that it is possible to reduce the number of complicated parts. There is. Further, if the tension adjusting members 30B are provided on both ends of the cable body 21, there is an advantage that the tension of the wire cable 2 can be adjusted on both ends of the hood panel 1.

[Sixth Embodiment]
Subsequently, a sixth embodiment of the present invention will be described. The vehicle hood structure according to the present embodiment differs from the third embodiment in the configuration of the tension adjusting member. As shown in FIG. 11, the tension adjusting member 30C according to the present embodiment includes a cylindrical portion 35A, and the cylindrical portion 35A is formed with a spiral groove 35B cut out in a spiral shape. The tension adjusting member 30C constitutes a spiral groove member.

  Further, a stepped engagement portion 16 is formed in the vertical portion 14B of the L-shaped flange 14 formed at the terminal of the panel body 11. The stepped engagement portion 16 includes a linear portion 16A and a locking hole 16B similar to the linear portion 15A and the locking hole 15B in the engaging portion 15 shown in FIG. Further, a step having substantially the same width as the pitch of the spiral groove 35B of the tension adjusting member 30C is formed at the notch end portion of the linear portion 15A of the stepped engagement portion 16.

  In the vehicle hood structure according to the present embodiment having such a configuration, the inner panel is used because the hood panel 1 is bent by the tension of the cable body 21 in the wire cable 2 as in the first embodiment. Even if not, the shape and strength of the hood can be maintained by the hood panel 1. Moreover, since the wire cable 2 is used without using an inner panel, it can contribute to weight reduction of the whole hood.

  Further, a tension adjusting member 30 </ b> C is attached to one end side of the cable body 21 in the wire cable 2. By engaging the spiral groove 35B in the tension adjusting member 30C with the stepped engagement portion 16 formed in the L-shaped flange 14 in the hood panel 1, the length of the wire cable 2 can be easily adjusted. .

  At this time, since the spiral groove 35B can be screwed into the stepped engagement portion 16 by rotating the tension adjusting member 30C, the screwing amount can be easily adjusted. Further, the tension of the wire cable 2 is adjusted by the screwing amount of the tension adjusting member 30 </ b> C with respect to the stepped engagement portion 16. Therefore, the tension of the wire cable 2 can be adjusted very easily.

[Seventh Embodiment]
Subsequently, a seventh embodiment of the present invention will be described. The vehicle hood structure according to the present embodiment is mainly different from the second embodiment in the aspect of the L-shaped flange. FIG. 12 is a front sectional view of the vehicle hood panel according to the present embodiment. As shown in FIG. 12, the vehicle hood structure according to this embodiment includes a hood panel 1 that covers an engine room that is disposed on the outer side of a vehicle body (not shown), and a wire cable 2 that is stretched over the hood panel 1. ing. The wire cable 2 includes a cable body 21 and an engagement member 23.

  The hood panel 1 has a panel body 11, and L-shaped flanges 41 are formed on both side terminals of the panel body 11. The L-shaped flange 41 is formed by folding the panel body 11 in two stages and further folding back at the lower end. Thus, the L-shaped flange 41 includes a horizontal portion 41A and a vertical portion 41B.

  Further, the panel body 11 and the L-shaped flange 14 are integrally formed, the vertical portion 41B is thicker than the horizontal portion 41A, and the thickness of the vertical portion 41B is approximately the thickness of the horizontal portion 41A. It has been doubled. Further, the horizontal portion 41A and the panel main body 11 have substantially the same thickness. For this reason, the vertical portion 41 </ b> B is thicker than the panel body 11, and the thickness of the vertical portion 41 </ b> B is approximately twice the thickness of the panel body 11.

  In the vehicular hood structure according to the present embodiment having such a configuration, the inner panel is used because the hood panel 1 is bent by the tension of the cable body 21 in the wire cable 2 as in the second embodiment. Even if not, the shape and strength of the hood can be maintained by the hood panel 1. Moreover, since the wire cable 2 is used without using an inner panel, it can contribute to weight reduction of the whole hood.

  Furthermore, the vertical part 41B in the L-shaped flange 41 is formed thicker than the horizontal part 41A. For this reason, since the rigidity of the vertical part 41B to which the wire cable 2 is connected can be increased, the tension of the wire cable 2 is suitably transmitted to the panel body 11. As a result, the curved shape of the panel body 11 can be adjusted with high accuracy.

[Eighth Embodiment]
Furthermore, an eighth embodiment of the present invention will be described. The vehicle hood structure according to the present embodiment is mainly different from the second embodiment in the aspect of the L-shaped flange. FIG. 13 is a front sectional view of the vehicle hood panel according to the present embodiment. As shown in FIG. 13, the vehicle hood structure according to this embodiment includes a hood panel 1 that covers an engine room that is disposed on the outer surface of a vehicle body (not shown), and two wire cables that are stretched over the hood panel 1. 2 is provided. The wire cable 2 includes a cable body 21 and an engagement member 23.

  The hood panel 1 has a panel body 11, and L-shaped flanges 42 are formed at both ends of the panel body 11. The L-shaped flange 42 is formed by folding the panel body 11 in two stages. Thus, the L-shaped flange 42 includes a horizontal portion 42A and a vertical portion 42B. Further, the panel body 11 and the L-shaped flange 42 are integrally formed. Here, the L-shaped flange 42 is thicker than the panel body 11, and the thickness of the L-shaped flange 42 is approximately twice the thickness of the panel body 11.

  In the vehicular hood structure according to the present embodiment having such a configuration, the inner panel is used because the hood panel 1 is bent by the tension of the cable body 21 in the wire cable 2 as in the second embodiment. Even if not, the shape and strength of the hood can be maintained by the hood panel 1. Moreover, since the wire cable 2 is used without using an inner panel, it can contribute to weight reduction of the whole hood.

  Further, the L-shaped flange 42 is formed thicker than the panel body 11 in the hood panel 1. For this reason, since the rigidity of the L-shaped flange 42 to which the wire cable 2 is connected can be increased, the tension of the wire cable 2 is suitably transmitted to the panel body 11. As a result, the curved shape of the panel body 11 can be adjusted with high accuracy.

[Ninth Embodiment]
Subsequently, a ninth embodiment of the present invention will be described. The vehicle hood structure according to the present embodiment is mainly different from the second embodiment in the aspect of the L-shaped flange. FIG. 14 is a front sectional view of a vehicle hood panel according to the present embodiment, and FIG. 15 is an exploded perspective view thereof.

  As shown in FIG. 14, the hood structure for a vehicle according to the present embodiment includes a hood panel 1 that covers an engine room that is disposed on an outer surface of a vehicle body (not shown), and two wire cables that are stretched on the hood panel 1. 2 is provided. The wire cable 2 includes a cable body 21 and an engagement member 23.

  The hood panel 1 has a panel body 11, and L-shaped flanges 43 are formed at both ends of the panel body 11. The L-shaped flange 43 is formed by folding the panel body 11 in two stages. Thus, the L-shaped flange 43 includes the horizontal portion 43A and the vertical portion 43B. Furthermore, the L-shaped flange 43 includes a reinforcing angle member 43C as shown in FIG. The reinforcing angle member 43C is fixed to the horizontal portion 43A and the vertical portion 43B of the L-shaped flange 43 by welding.

  In the vehicular hood structure according to the present embodiment having such a configuration, the inner panel is used because the hood panel 1 is bent by the tension of the cable body 21 in the wire cable 2 as in the second embodiment. Even if not, the shape and strength of the hood can be maintained by the hood panel 1. Moreover, since the wire cable 2 is used without using an inner panel, it can contribute to weight reduction of the whole hood.

  Further, the L-shaped flange 43 has a reinforcing angle member 43C attached to the horizontal portion 43A and the vertical portion 43B, and is formed thicker than the panel body 11 in the hood panel 1. For this reason, since the rigidity of the L-shaped flange 43 to which the wire cable 2 is connected can be increased, the tension of the wire cable 2 is suitably transmitted to the panel body 11. As a result, the curved shape of the panel body 11 can be adjusted with high accuracy.

[Tenth embodiment]
Next, a tenth embodiment of the present invention will be described. The vehicle hood structure according to the present embodiment is mainly different from the second embodiment in the aspect of the L-shaped flange. 16 is a perspective view of a vehicle hood panel according to the present embodiment, and FIG. 17 is a cross-sectional view taken along the line II of FIG.

  As shown in FIGS. 16 and 17, the vehicle hood structure according to this embodiment includes a hood panel 1 that covers an engine room that is disposed on an outer surface of a vehicle body (not shown), and two hood panels 1 that are stretched on the hood panel 1. The wire cable 2 is provided. The wire cable 2 includes a cable body 21 and an engagement member 23.

  The hood panel 1 has a panel body 11, and L-shaped flanges 44 are formed on both side terminals of the panel body 11. The L-shaped flange 44 is formed by folding the panel body 11 in two stages. Thus, the L-shaped flange 44 includes a horizontal portion 44A and a vertical portion 44B. Further, a beat 44C also shown in FIG. 17 is formed on the bent side between the horizontal portion 44A and the vertical portion 44B corresponding to the position where the engagement member 23 of the wire cable 2 is engaged in the L-shaped flange 44. ing.

  In the vehicular hood structure according to the present embodiment having such a configuration, the inner panel is used because the hood panel 1 is bent by the tension of the cable body 21 in the wire cable 2 as in the second embodiment. Even if not, the shape and strength of the hood can be maintained by the hood panel 1. Moreover, since the wire cable 2 is used without using an inner panel, it can contribute to weight reduction of the whole hood.

  Further, a beat 44 </ b> C is formed on the bent side between the horizontal portion 44 </ b> A and the vertical portion 44 </ b> B corresponding to the position where the engaging member 23 of the wire cable 2 is engaged in the L-shaped flange 44. For this reason, since the rigidity of the L-shaped flange 44 to which the wire cable 2 is connected can be increased, the tension of the wire cable 2 is suitably transmitted to the panel body 11. As a result, the curved shape of the panel body 11 can be adjusted with high accuracy.

[Eleventh embodiment]
Subsequently, an eleventh embodiment of the present invention will be described. 18 is a rear view of the vehicle hood structure according to the present embodiment as viewed from the back side, and FIG. 19 is a cross-sectional view taken along the line II-II in FIG. As shown in FIG. 18, the vehicle hood structure according to the present embodiment includes a hood panel 1 and a plurality of, here six, first wire cables 2A to 6F. As shown in FIG. 19, the hood panel 1 includes a panel main body 11 and a flange 12 as in the first embodiment.

  The flange 12 is formed with an engagement hole (not shown) similar to that of the first embodiment at each of the positions where the six wire cables 2A to 2F are provided. Furthermore, each of the wire cables 2A to 2F has the same configuration as that of the wire cable 2 in the first embodiment, and includes the cable body 21 and the engagement ball 22 shown in FIG. Yes.

  On the other hand, in the vehicle hood structure according to the present embodiment, the first cutting device 50A to the sixth cutting device 50F serving as wire cutting means are provided for each of the first wire cable 2A to the sixth wire cable 2F. Yes. Each of the first cutting device 50A to the sixth cutting device 50F includes a cutter member that cuts the first wire cable 2A to the sixth wire cable 2F and an actuator that drives the cutter member.

  Furthermore, the actuators in the first cutting device 50 </ b> A to the sixth cutting device 50 </ b> F are each connected to a drive control ECU (Electronic control unit) 51, and the drive control ECU 51 is connected to a pre-crash sensor 52. A pre-crash ECU 53 is interposed between the drive control ECU 51 and the pre-crash sensor 52.

  The drive control ECU 51 is a computer mounted on a vehicle, and includes a CPU, a ROM (Read Only Memory), a RAM (Random Access Memory), an input / output interface, and the like. The drive control ECU 51 determines a wire cable to be cut among the first wire cable 2A to the sixth wire cable 2F based on the pre-crash signal received from the pre-crash ECU 53.

  Drive control ECU51 is a cutting signal with respect to the cutting device among 1st cutting device 50A-6th cutting device 50F provided in the wire cable determined to cut among 1st wire cable 2A-6th wire cable 2F. Send. The cutting device that has received the cutting signal transmitted by the drive control ECU 51 drives the cutter with the actuator to cut the wire cable.

  The pre-crash sensor 52 is provided, for example, at the front of a vehicle (not shown), and detects the distance from the vehicle to the object in front of the vehicle and the relative speed of the object with respect to the vehicle. The pre-crash sensor 52 transmits to the pre-crash ECU 53 a distance signal corresponding to the distance from the vehicle to the object and a relative speed signal corresponding to the relative speed of the object with respect to the vehicle.

  The pre-crash ECU 53 calculates the possibility of collision between the vehicle and the object based on the distance signal and the relative speed signal transmitted from the pre-crash sensor 52. In addition, the possibility of collision between the vehicle and the object is high. For example, when a predetermined threshold value is exceeded, an outer load caused by the collision of the object with the vehicle is calculated. The pre-crash ECU 53 constitutes an outer load acquisition unit. Further, the pre-crash ECU 53 transmits a pre-crash signal corresponding to the calculated outer load to the drive control ECU 51.

  Next, the operation / action of the vehicle hood structure according to the present embodiment will be described. In the hood structure for a vehicle according to the present embodiment, when an object is assumed to collide with the hood panel, the outer load applied to the vehicle is estimated, and by cutting the wire cable in accordance with the estimated outer load, Reduce the load on the object.

  Specifically, an example in which an object M collides with the panel body 11 in the hood panel 1 as shown in FIG. In this case, for example, as shown in FIG. 20 (a), even if the object M collides with the panel body 11, if the cable body 21 in the wire cable 2 remains stretched on the hood panel 1, the shock absorption is high. Instead, as shown in FIG. 20B, as the deformation amount S of the panel body 11 increases, the load F applied to the object as a reaction force from the panel body 11 increases.

  On the other hand, as shown in FIG. 21A, when the object M collides with the panel main body 11, the load F applied to the object can be reduced by cutting the wire cable 2. However, in the state where the first wire cable 2A to the sixth wire cable 2F are stretched, even if one wire cable is cut, the load applied to the object M because other wire cables are stretched. F will continue to increase up to a certain range.

Accordingly, the first wire cable 2A to the sixth wire cable 2F are sequentially cut according to the outer load calculated by the pre-crash ECU 53, and as shown in FIG. Even if S increases, the load applied to the object M is adjusted so as not to exceed the preset maximum load F _MAX . Here, whenever the deformation amount S of the panel body 11 increases and the load applied to the object M reaches the maximum load F _MAX , the first wire cable 2A to the sixth wire cable 2F are sequentially cut one by one. .

Specifically, when the deformation amount S becomes the first deformation amount S1 and the load F reaches F _MAX , the fifth wire cable 2E is cut, and the second deformation amount S2 becomes the load F and the load F becomes F _MAX . When reaching, the sixth wire cable 2F is cut. Subsequently, when the deformation amount S becomes the third deformation amount S3 and the load F reaches F _MAX , the fourth wire cable 2D is cut, and the deformation amount S becomes the fourth deformation amount S4 and the load F becomes F. When reaching _MAX , the second wire cable 2B is cut.

Thus, in the vehicle hood structure according to the present embodiment, even if the deformation amount S of the panel body 11 increases, the load applied to the object M does not increase, and the load applied to the object M exceeds the maximum load F _MAX . Can not be. Accordingly, the curved surface of the hood panel 1 can be easily retracted, and the shock absorbing performance can be enhanced.

  Furthermore, in the vehicular hood structure according to the present embodiment, the hood panel 1 is bent by the tension of the cable body 21 in the wire cable 2 as in the first embodiment, so that the inner panel is not used. The shape and strength of the hood can be maintained by the hood panel 1. Moreover, since the wire cable 2 is used without using an inner panel, it can contribute to weight reduction of the whole hood.

[Twelfth embodiment]
The vehicle hood structure according to the present embodiment is mainly different from the eleventh embodiment in the aspect of the cutting device. The vehicle hood structure according to the present embodiment includes the hood panel 1 and a plurality of, here six, first to sixth wire cables, as in the eleventh embodiment.

  As shown in FIG. 22, a cutter device 55 is provided in the lower engine room at the position where the wire cable 2 is provided. This cutter member is provided so as to correspond to each of the six wire cables. The cutter device 55 includes a cutter unit 55A capable of cutting the cable body 21 in the wire cable 2, and a pedestal 55B that supports the cutter unit 55A.

  The cutter portion 55 </ b> A is disposed on the opposite side of the hood panel 1 with the wire cable 2 interposed therebetween, and includes a projecting portion that intersects the extending direction of the wire cable 2 and faces the direction facing the wire cable 2. . The pedestal 55B is disposed and fixed at a predetermined position in the engine room.

  In the vehicular hood structure according to the present embodiment having such a configuration, when the object M collides with the panel main body 11, the panel main body 11 is deformed to the engine room side. With the deformation of the panel body 11, the wire cable 2 also moves to the engine room side. When the wire cable 2 moves to the engine room side, it comes into contact with the cutter portion 55A in the cutter device 55, and the wire cable 2 is cut.

  Thus, in the vehicle hood structure according to the present embodiment, when the panel body 11 is deformed to the engine room side, the wire cable 2 is cut by the cutter device 55. Therefore, the curved surface of the hood panel 1 can be easily retracted, and the impact absorption performance can be enhanced.

  Moreover, since the part where the panel body 11 is deformed is a part where the object M collides, the wire cable in the vicinity of the part where the object collides is cut. For this reason, since the load applied to the object can be further reduced, the impact absorbability can be increased accordingly.

  Furthermore, in the vehicular hood structure according to the present embodiment, the hood panel 1 is bent by the tension of the cable body 21 in the wire cable 2 as in the first embodiment, so that the inner panel is not used. The shape and strength of the hood can be maintained by the hood panel 1. Moreover, since the wire cable 2 is used without using an inner panel, it can contribute to weight reduction of the whole hood.

[Thirteenth embodiment]
Next, a thirteenth embodiment of the present invention is described. The vehicle hood structure according to the present embodiment is mainly different from the first embodiment in the manner of attaching the wire cable. FIG. 23 is a schematic perspective view of the vehicle hood structure according to the present embodiment. As shown in FIG. 23, the vehicle hood structure according to this embodiment includes a hood panel 1 including a panel body 11. This is the same as in the first embodiment. Moreover, the flange is formed in the width direction edge part in the rear-end part of the panel main body 11, and the engagement hole 13 for attaching a wire cable is formed in the flange.

  Moreover, the vehicle hood structure according to the present embodiment includes a main wire cable 60 stretched in the left-right direction and a secondary wire cable 61 stretched in the front-rear direction, as wire cables. As in the first embodiment, the main wire cable 60 is attached and stretched to the engagement hole 13 formed in the side terminal of the panel body 11. On the other hand, the secondary wire cable 61 is attached to an attachment portion 62 formed at a substantially central position in the width direction of the rear end portion of the panel body 11.

  A length adjusting mechanism 63 is attached to the secondary wire cable 61. The length adjustment mechanism 63 allows the length of the sub wire cable 61 to be adjusted. The length adjustment mechanism 63 serves as tension adjustment means. Further, the secondary wire cable 61 becomes an adjustment wire for adjusting the tension of the main wire cable 60.

  Further, the secondary wire cable 61 is wound around the substantially central portion of the primary wire cable 60 and the primary wire cable 60 and the secondary wire cable 61 are joined. For this reason, the secondary wire cable 61 is attached to an attachment portion 62 formed at the rear end portion of the panel body 11 at both ends, and is folded back by the main wire cable 60.

  In the vehicle hood structure according to the present embodiment having the above-described configuration, the hood panel 1 is curved by the tension of the main wire cable 60. Therefore, even if the inner panel is not used, the hood panel 1 The strength can be maintained. Moreover, since the main wire cable 60 is used without using an inner panel, it can contribute to weight reduction of the whole hood.

  In the vehicular hood structure according to the present embodiment, the subordinate wire cable 61 is wound around a substantially central portion of the main wire cable 60, and the length adjusting mechanism 63 is attached to the subwire cable 61. The length of the secondary wire cable 61 is adjusted by the length adjustment mechanism 63.

  Here, as shown in FIG. 24A, when the length of the secondary wire cable 61 is shortened in a state where the secondary wire cable 61 is wound around the primary wire cable 60, it is shown in FIG. As described above, the central portion of the main wire cable 60 is pulled rearward, and the main wire cable 60 and the sub wire cable 61 form a substantially Y shape.

  At this time, since the tension of the main wire cable 60 is increased, the tension when the panel body 11 in the hood panel 1 is bent by the main wire cable 60 is increased, and the curved shape of the hood panel 1 can be adjusted. In this way, the curved shape of the panel body 11 in the hood panel 1 can be adjusted by adjusting the length of the sub-wire cable 61 by the length adjustment mechanism 63, so that the panel body 11 in the hood panel 1 can be easily adjusted. Can be adjusted.

  Also, for example, as shown in FIG. 25, when a plurality of wire cables 2 and 2 are stretched on the panel body 11, if these wire cables 2 are provided without being entangled, the length of the wire cable 2 In order to adjust the height, a plurality of length adjusting mechanisms are required.

  On the other hand, in the vehicle hood structure according to the present embodiment, the secondary wire cable 61 is wound around the main wire cable 60, and both are intertwined. For this reason, the tension | tensile_strength of the main wire cable 60 can also be adjusted only by providing the length adjustment mechanism 63 which adjusts the length of the subwire cable 61. FIG. Therefore, the number of parts can be reduced and the number of adjustments of the wire cable can be reduced.

[Fourteenth embodiment]
Subsequently, a fourteenth embodiment will be described. The vehicle hood structure according to the present embodiment is mainly different from the thirteenth embodiment in the manner in which the secondary wire cable 61 is wound around the primary wire cable 60. FIG. 26 shows a vehicle hood structure according to the present embodiment, wherein (a) is a schematic perspective view before adjusting the length of the secondary wire cable, and (b) is a schematic view after adjusting the length of the secondary wire cable. It is a perspective view.

  As shown in FIG. 26 (a), in the vehicle hood structure according to the present embodiment, the main wire cable 60 is stretched in the left-right direction of the panel body 11, and the sub-wire cable 61 is connected to the main wire cable 60. Is wound in three places. Further, the panel body 11 is provided with a rear end attaching portion 62 for attaching the subordinate wire cable 61 to two locations at both ends thereof, and a folding member 64 for hooking and folding the subordinate wire cable 61 at an intermediate position thereof. Is provided.

  Both ends of the sub-wire cable 61 are attached to the rear end attaching portion 62 in the panel main body 11, and are folded back by being hooked on the folding member 64 at a midway position in the length direction. The sub-wire cable 61 is wound around a plurality of intermediate positions in the length direction of the main wire cable 60, that is, in this embodiment, at three locations. Thus, the secondary wire cable 61 has a substantially V-shaped configuration. Further, a length adjusting mechanism 63 that adjusts the length of the sub-wire cable 61 is provided at a midway position in the length direction of the sub-wire cable 61.

  In the vehicle hood structure according to the present embodiment having the above-described configuration, the hood panel 1 is curved by the tension of the main wire cable 60. Therefore, even if the inner panel is not used, the hood panel 1 The strength can be maintained. Moreover, since the main wire cable 60 is used without using an inner panel, it can contribute to weight reduction of the whole hood.

  In the vehicular hood structure according to the present embodiment, the wire cable 61 is wound around the three positions of the main wire cable 60, and the length adjusting mechanism 63 is attached to the slave wire cable 61. . The length of the secondary wire cable 61 is adjusted by the length adjustment mechanism 63.

  Here, as shown in FIG. 26A, when the length of the secondary wire cable 61 is shortened in a state where the secondary wire cable 61 is wound around the primary wire cable 60, FIG. As shown, the central portion of the main wire cable 60 is pulled backward. Also in such an aspect, the curved shape of the panel body 11 in the hood panel 1 can be adjusted by adjusting the length of the sub-wire cable 61, so the curved shape of the panel body 11 in the hood panel 1 can be easily adjusted. Can be adjusted. Furthermore, the number of parts can be reduced and the number of adjustments of the wire cable can be reduced.

[Fifteenth embodiment]
Subsequently, a fifteenth embodiment will be described. The vehicular hood structure according to the present embodiment is mainly different from the thirteenth embodiment in the manner in which the wire cable is stretched. FIG. 27 shows the hood structure for a vehicle according to the present embodiment, wherein (a) is a schematic perspective view before adjusting the length of the third wire cable, and (b) is an outline after adjusting the length of the third wire cable. It is a perspective view.

  As shown in FIG. 27A, in the vehicle hood structure according to this embodiment, the left first wire cable 65 </ b> A, the right first wire cable 65 </ b> B, and the second wire cable 66 are attached to the panel body 11. It has been. A third wire cable 67 is wound around the first wire cables 65A and 65B.

  Further, the panel main body 11 is provided with a front end attaching portion 68 for attaching the first wire cables 65A and 65B at positions near both front ends. Further, a rear center mounting portion 62 is provided at a rear position in the panel main body 11 at a substantially central position in the width direction of the rear end portion of the panel main body 11 as in the thirteenth embodiment.

  The first wire cables 65 </ b> A and 65 </ b> B have one end attached to a front end attaching portion 68 provided near the front end of the panel body 11 and the other end attached to the engaging hole 13. Further, both end portions of the second wire cable 66 are attached to the rear center attaching portion 62.

  The third wire cable 67 has one end wound around the left first wire cable 65A and the other end wound around the right first wire cable 65B. Further, the second wire cable 66 is wound around the substantially central portion of the third wire cable 67. The second wire cable 66 is provided with a length adjustment mechanism 63.

  In the vehicle hood structure according to the present embodiment having the above-described configuration, the hood panel 1 is bent by the tension of the first wire cables 65A and 65B and the third wire cable 67, so that the inner panel is not used. The shape and strength of the hood can be maintained by the hood panel 1. Moreover, since the main wire cable 60 is used without using an inner panel, it can contribute to weight reduction of the whole hood.

  Further, in the vehicle hood structure according to the present embodiment, the second wire cable 66 is wound around the substantially central portion of the third wire cable 67, and the length adjustment mechanism 63 is attached to the second wire cable 66. ing. The length of the secondary wire cable 61 is adjusted by the length adjustment mechanism 63.

  Here, as shown in FIG. 27A, when the length of the second wire cable 66 is shortened while the second wire cable 66 is wound around the third wire cable 67, FIG. As shown to b), the center part of the 3rd wire cable 67 is pulled back, and the substantially Y shape is formed by the 3rd wire cable 67 and the 2nd wire cable 66. Furthermore, since the third wire cable 67 is pulled inward, the first wire cables 65A and 65B are also deformed.

  At this time, since the tension of the third wire cable 67 and the tension in the width direction of the first wire cables 65 </ b> A and 65 </ b> B increase, the panel body 11 in the hood panel 1 by the first wire cables 65 </ b> A and 65 </ b> B and the third wire cable 67. The tension at the time of bending is increased, and the curved shape of the hood panel 1 can be adjusted. In this way, the curved shape of the panel body 11 in the hood panel 1 can be adjusted by adjusting the length of the second wire cable 66 by the length adjustment mechanism 63, and thus the panel body in the hood panel 1 can be easily adjusted. 11 curved shapes can be adjusted.

  Moreover, even if the curved shape of the hood panel 1 is complicated by providing the first wire cables 65A and 65B and the third wire cable 67 and providing more wire cables, it is easy to cope with it. Become. Even at this time, the curved shape can be easily adjusted by the length adjusting mechanism 63.

[Sixteenth Embodiment]
Next, a sixteenth embodiment of the present invention will be described. The vehicle hood structure according to the present embodiment is mainly different from the fourteenth embodiment in the aspect of the main wire cable 60. FIG. 28 shows the hood structure for a vehicle according to the embodiment, wherein (a) is a schematic perspective view before adjusting the length of the secondary wire cable, and (b) is a schematic perspective view after adjusting the length of the secondary wire cable. FIG.

  As shown in FIG. 28A, in the vehicle hood structure according to the present embodiment, the main wire cable 60 is stretched in the left-right direction of the panel body 11, and the sub-wire cable 61 is connected to the main wire cable 60. Is wound in three places. Further, the panel body 11 is provided with a rear end attachment portion 62 for attaching the wire cable 61 to the two places on both ends thereof, and a folding member 64 for hooking and folding the slave wire cable 61 is provided at an intermediate position. It has been.

  Both ends of the sub-wire cable 61 are attached to the rear end attaching portion 62 in the panel main body 11, and are folded back by being hooked on the folding member 64 at a midway position in the length direction. The sub-wire cable 61 is wound around a plurality of intermediate positions in the length direction of the main wire cable 60, that is, in this embodiment, at three locations. Thus, the secondary wire cable 61 has a substantially V-shaped configuration. Further, a length adjusting mechanism 63 that adjusts the length of the sub-wire cable 61 is provided at a midway position in the length direction of the sub-wire cable 61.

  The main wire cable 60 has a plurality of knots 60A. The knot 60A is formed by simply tying the main wire cable 60. The knots 60A are formed on the inner side of the position where the secondary wire cable 61 is wound on both sides in the left-right direction of the main wire cable 60 and on both sides of the position where the secondary wire cable 61 is wound in the center in the left-right direction. .

  In the vehicular hood structure according to the present embodiment having the above configuration, the shape and strength of the hood can be maintained by the hood panel 1 without using the inner panel, as in the fourteenth embodiment. Moreover, it can contribute to the weight reduction of the whole food | hood. Furthermore, by attaching the length adjustment mechanism 63, the curved shape of the panel body 11 in the hood panel 1 can be easily adjusted, and the number of adjustments of the wire cable can be reduced.

  Furthermore, in the vehicle hood structure according to the present embodiment, the main wire cable 60 is formed with a plurality of knots 60A. A case where such a knot is not formed as shown in FIG. 29A will be described. In this case, depending on the arrangement of the sub-wire cable 61, when the length of the sub-wire cable 61 is shortened, the winding position of the sub-wire cable 61 around the main wire cable 60 is as shown in FIG. There is a concern that the wire cable 61 cannot be adjusted according to a desired position.

  In this regard, in the vehicle hood structure according to the present embodiment, the main wire cable 60 has a plurality of knots 60 </ b> A. For this reason, as shown in FIG. 28B, the knot 60A prevents the secondary wire cable 61 from moving to the center. For this reason, the position of the sub wire cable 61 can be adjusted easily.

[Seventeenth embodiment]
Subsequently, a seventeenth embodiment of the present invention will be described. FIG. 30 is a partially cutaway perspective view of a vehicle including the vehicle hood structure according to the present embodiment. As shown in FIG. 30, in the vehicle hood structure according to the present embodiment, a pre-crash wire 70 is used inside the hood panel 1 provided in front of the front window glass W in the vehicle C so as to correspond to the pre-crash of the vehicle. Is stretched.

  As shown in FIG. 31 (a), a pre-crash wire mounting portion 71 is provided at the front-rear direction terminal position on the back side of the panel body 11 in the hood panel 1, and both end portions of the pre-crash wire 70 are respectively It is attached to the pre-crash wire attaching portion 71. In this way, the pre-crash wire 70 is disposed along the front-rear direction of the vehicle.

  A swing actuator mechanism 72 serving as a pre-crash wire pulling means for pulling the pre-crash wire is provided in the engine room covered with the hood panel 1. The swing actuator mechanism 72 includes a casing 72A, and a motor 72B serving as a driving unit is provided inside the casing 72A. An arm member 72C is attached to the motor 72B. The arm member 72C is driven to swing by operating the motor 72B, and the pre-crash wire 70 is disposed on the swing locus.

  A push-down member 72D that pushes down the pre-crash wire 70 is attached to the tip of the arm member 72C. When the motor 72B is operated, the arm member 72C swings, and the position in the length direction of the pre-crash wire 70 is pushed down and pulled by the pressing member 72D. The arm member 72 </ b> C and the pressing member 72 </ b> D serve as an actuator that moves in a direction that intersects the direction in which the pre-crash wire 70 is stretched.

  Further, the pre-crash ECU 53 described in the eleventh embodiment is connected to the motor 72B in the swing actuator mechanism 72, and the pre-crash sensor 52 is connected to the pre-crash ECU 53. The pre-crash ECU 53 has a high possibility of collision between the vehicle and the object. For example, when a predetermined threshold value is exceeded, the pre-crash ECU 53 transmits a collision prediction signal to the motor 72B in the swing actuator mechanism 72. The motor 72B operates when a collision prediction signal is received, and swings the arm member 72C to push down the midway position of the pre-crash wire 70 as shown in FIG.

  Next, the operation / action of the vehicle hood structure according to the present embodiment will be described. In the vehicle hood structure according to the present embodiment, when an object is assumed to collide with the hood panel 1, the hood panel 1 is bent by pulling the pre-crash wire 70 so that the hood panel 1 is windshield glass. This prevents the collision with W.

  When an object collides with the front of the vehicle C, the hood panel 1 may be pushed backward by a load received by the collision, and may collide with the front window glass W. Therefore, when the object is predicted to collide with the front surface of the vehicle C, the hood panel 1 is bent stably, thereby preventing the front window glass W from being damaged by the hood panel 1.

  A specific flow when a collision occurs in the vehicle C will be described with reference to FIG. First, the pre-crash ECU 53 calculates and acquires the possibility that an object will collide with the vehicle C based on the relative speed and relative distance of the object in front of the vehicle C detected by the pre-crash sensor 52 with the vehicle C. . From the possibility that the object will collide with the vehicle C, a collision of the object with the vehicle C is detected in advance (S1).

  Next, when the collision of the object with respect to the vehicle C is detected, the pre-crash ECU 53 transmits a collision signal to the motor 72B in the swing actuator mechanism 72 to operate the motor 72B. When the motor 72B operates, the arm member 72C swings, and the pre-crash wire 70 is pushed down and pulled by the pressing member 72D (S2).

  Here, both ends of the pre-crash wire 70 are attached to the front and rear ends of the hood panel 1. For this reason, when the pre-crash wire 70 is pulled, the hood panel 1 is bent so as to protrude outward due to the tension of the pre-crash wire 70, and the hood panel 1 is bent into a "<" shape (S3).

  Thereafter, as detected by the pre-crash ECU 53, when an object collides in front of the vehicle C, the hood panel 1 is partially bent, so that the amount of bending increases from this bending position. Thus, after an object collides ahead of the vehicle C, the hood panel 1 can be stably deformed (S4). Thus, by stably deforming the hood panel 1, it is possible to avoid the rear end portion of the hood panel 1 from contacting the front window glass W (S5). As a result, damage to the front window glass W due to the hood panel 1 can be prevented.

[Eighteenth Embodiment]
Subsequently, an eighteenth embodiment of the present invention will be described. FIG. 33 is a back view schematically showing a state in which the vehicle hood structure according to this embodiment is viewed from the back side, and FIG. 34 is a cross-sectional view taken along line III-III in FIG. As shown in FIG. 33, the vehicle hood structure according to the present embodiment is similar to the eleventh embodiment in that the hood panel 1 and a plurality of, here six, first wire cables 2A to 6 wire cables. 2F is provided. The hood panel 1 includes a panel body 11 and a flange 12 as shown in FIG.

  The flange 12 is formed with an engagement hole (not shown) similar to that of the first embodiment at each of the positions where the six wire cables 2A to 2F are provided. Furthermore, each of the wire cables 2A to 2F has the same configuration as that of the wire cable 2 in the first embodiment, and includes the cable body 21 and the engagement ball 22 shown in FIG. Yes.

  On the other hand, in the vehicle hood structure according to the present embodiment, the first mass member 80A to the sixth mass member 80F, which are weights, are respectively attached to the first wire cable 2A to the sixth wire cable 2F. . In the example shown in FIG. 33, the first mass member 80A to the sixth mass member 80F are all provided at substantially the center positions in the longitudinal direction of the first wire cable 2A to the sixth wire cable 2F. The position is appropriately changed.

  Now, as shown in FIG. 34, a mass member 80 is sandwiched between the panel main body 11 and the wire cable 2 and the vibration of the panel main body 11 is directly transmitted to the wire. In this case, it can be considered as a two-degree-of-freedom vibration system including a first mass body M1, a second mass body M2, a first elastic body K1, and a second elastic body K2 as shown in FIG. When the vehicle hood structure shown in FIG. 34 is applied to the two-degree-of-freedom vibration system shown in FIG. 35, the first mass body M1 is the effective mass of the panel body, and the second mass body M2 is the effective mass of the wire cable 2 and the mass member 80. The first elastic body K1 is the rigidity of the panel body 11, and the second elastic body K2 is the rigidity of the wire cable 2 and the mass member 80.

In the two-degree-of-freedom vibration system, the resonance frequency f (t) is determined by the mass of the mass body and the elastic coefficient of the elastic body, and for example, draws the waveform shown in FIG. Here, when the masses of the first mass body M1 and the second mass body M2 are m1 and m2, and the elastic coefficients of the first elastic body K1 and the second elastic body K2 are k1 and k2, the first peak ωn1 of amplitude and The second peak ωn2 is calculated based on the following equations (1) and (2), respectively.

  Thus, the resonance frequency f (t) of the two-degree-of-freedom vibration system is determined by the mass of the mass body and the elastic coefficient of the elastic body. From this, the resonance frequency f (t) can be controlled by adjusting the mass and elastic modulus of the wire cable 2 and the mass member 80, and can contribute to suppression of vibration.

  Next, means for adjusting the mass and elastic modulus of the wire cable 2 will be specifically described. In the example shown in FIG. 33, the weight and the elastic coefficient are adjusted by attaching the mass member 80 to the wire cable 2, but by setting the cross-sectional shape of the wire cable 2, the mass and the elastic coefficient of the wire cable 2 are set. Can be adjusted.

  Specifically, as shown in FIG. 37 (a), the cross-sectional shape can be a hollow circular shape, and as shown in FIG. 37 (b), the solid circular shape is used. You can also Moreover, as shown in FIG.37 (c), it can also be set as a hollow rectangular shape, and as shown in FIG.37 (d), it can also be set as a solid rectangular shape. Furthermore, as shown in FIG. 37 (e), a hollow triangular shape may be used, or as shown in FIG. 37 (f), a solid triangular shape may be used.

  Alternatively, as shown in FIG. 38 (a), a hollow elliptical shape can be used, and as shown in FIG. 38 (b), a solid elliptical shape can also be used. Furthermore, as shown in FIG. 38 (c), it may be a hollow rectangular shape, or as shown in FIG. 38 (d), it may be a solid rectangular shape. As described above, by setting the cross-sectional shape of the wire cable 2, the mass and elastic modulus of the wire cable 2 can be adjusted.

  Furthermore, the mass and elastic modulus of the wire cable 2 can be adjusted by adjusting the shape of the wire cable 2 in the longitudinal direction. As the shape of the wire cable 2 in the longitudinal direction, as shown in FIG. 39 (a), the shape of the side surface is a rectangle, or as shown in FIG. A normal distribution in which the upper and lower ridgelines having a large diameter portion at the center in the longitudinal direction have a substantially normal distribution, as shown in FIG. 39 (c). Or shape. If these drum-like shapes and normal distribution shapes are used, a large weight portion is formed at the center in the longitudinal direction of the wire cable 2. Thus, the effective mass can be increased without increasing the entire mass of the wire cable 2.

  Here, in each example of FIGS. 39A to 39C, it is assumed that the cross-sectional shape is circular, but in addition, the cross-sectional shape is each shape shown in FIG. 37 and FIG. You can also. Of course, other shapes not illustrated here may be used.

  Furthermore, it can also be set as the wire cable 90 shown in FIG. The wire cable 90 includes a center position member 91 provided at a central portion in the longitudinal direction and an end position member 92 provided at an end portion in the longitudinal direction. Here, the center position member 91 is made of metal, and the end position member 92 is made of resin as a lightweight material, for example, fiber reinforced resin. The metal used as the center position member 91 is heavier than the resin used as the end position member 92. In this case, a heavy weight part is formed in the longitudinal center part of the wire cable 90 by the metal center position member 91.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments. In particular, in each embodiment, various forms of wire cables and the like are used, but it is also possible to appropriately combine the aspects in each embodiment. Moreover, as a hood panel, the hood panel which covers the engine room arrange | positioned on the outer side surface of a vehicle body is made into the example. On the other hand, other hoods can be targeted.

Moreover, in each said embodiment, although the wire cable is used as a traction material, another traction material can also be used. As the other pulling material, for example, a metal or resin long bar or long plate, or a combination of these bar and wire can be used. Moreover, as these traction materials, those having an appropriate shape such as a circular cross section and a rectangular cross section can be used.

  DESCRIPTION OF SYMBOLS 1 ... Hood panel, 2 ... Wire cable, 11 ... Panel main body, 12 ... Flange, 13 ... Engagement hole, 13A ... Large diameter part, 13B ... Narrow part, 14 ... L-shaped flange, 15 ... Engagement part, 15A ... Linear part, 15B ... Locking hole, 16 ... Stepped engaging part, 16A ... Linear part, 16B ... Locking hole, 21 ... Cable body, 22 ... Engaging ball, 23 ... Engaging member, 23A ... Cylindrical part , 23B constricted part, 30 ... tension adjusting member, 50A-50F ... cutting device, 52 ... pre-crash sensor, 55 ... cutter device, 60 ... main wire cable, 60A ... knot, 61 ... sub wire cable, 63 ... length Adjustment mechanism, 70 ... pre-crash wire, 72 ... swing actuator mechanism, 80 ... mass member.

Claims (21)

A vehicle hood structure including a hood panel disposed as an outer surface of a vehicle body,
A wire is stretched between terminals on the inner surface of the vehicle body in the hood panel,
A hood structure for a vehicle, wherein a tension curved surface is formed on the hood panel by bending the wire by tensioning the wire.   The vehicle hood structure according to claim 1, wherein a tension adjusting mechanism that adjusts the tension of the wire is provided. The tension adjusting mechanism is
A slit member in which a plurality of slit portions arranged apart from each other along the extending direction of the wire are formed;
An engagement portion provided on the hood panel and engaged with the slit member;
The hood structure for vehicles according to claim 2 provided with these. The tension adjusting mechanism is
A spiral groove member formed with a spiral groove centered in the extending direction of the wire;
An engagement portion provided on the hood panel and engaged with the spiral groove member;
The hood structure for vehicles according to claim 2 provided with these. The hood panel includes a hood panel main body, and a flange portion that is formed on a side portion of the hood panel main body and serves as a terminal of the hood panel.
The vehicle hood structure according to any one of claims 1 to 4, wherein a thickness of the flange portion is greater than a thickness of the hood panel main body.   The vehicle hood structure according to claim 5, wherein the flange portion is thicker than a thickness of the hood panel body by bending a portion extending from the hood panel body.   The hood structure for a vehicle according to claim 5, wherein the flange portion is thicker than a thickness of the hood panel body by attaching a reinforcing member to a portion extending from the hood panel body. The hood panel includes a hood panel main body, and a flange portion that is formed on a side portion of the hood panel main body and serves as a terminal of the hood panel.
The vehicle hood structure according to claim 1, wherein a bead is formed in the flange portion. Wire cutting means for cutting the wire,
The vehicle hood structure according to any one of claims 1 to 8, wherein when the outer load applied to the hood panel reaches a predetermined threshold value, the wire is cut by the wire cutting means. . A plurality of wires are stretched on the food panel,
The vehicle hood structure according to claim 9, wherein the plurality of wires are sequentially cut each time an outer load applied to the hood panel reaches a predetermined threshold value.   The wire cutting means is provided on a side opposite to the hood panel with the wire interposed therebetween, and includes a protruding portion that is disposed so as to cross a direction in which the wire is stretched and face the wire. The vehicle hood structure according to claim 9. An outer load acquiring means for acquiring an outer load applied to the food panel;
The vehicle hood structure according to claim 9, wherein the wire is cut when an outer load acquired by the outer load acquisition unit exceeds a predetermined threshold value. It is attached to the end of the hood panel entangled with the wire, and includes an adjustment wire that adjusts the tension of the wire,
The vehicle hood structure according to claim 1, further comprising a tension adjusting unit that performs tension adjustment of the adjustment wire. A pre-crash wire that connects between the longitudinal terminals of the vehicle body in the hood panel,
The vehicle hood structure according to any one of claims 1 to 13, further comprising pre-crash wire pulling means that pulls the pre-crash wire when a collision between the vehicle body and an obstacle is predicted. . An actuator that moves in a direction that intersects the direction in which the pre-crash wire is stretched, and drive means that moves the actuator,
The hood structure for a vehicle according to claim 14, wherein the actuator is moved by the driving means when a collision between the vehicle body and an obstacle is predicted.   The vehicle hood structure according to any one of claims 1 to 15, wherein a large weight portion is formed on the wire. The large weight part is formed by attaching a weight,
The vehicle hood structure according to claim 16, wherein a shape of the weight is determined in accordance with a vibration direction of the wire.   The vehicular hood structure according to claim 16, wherein the large weight portion is formed with the wire having a large diameter.   The hood structure for a vehicle according to claim 16, wherein the heavy portion is formed of a metal and a portion other than the heavy portion is formed of a lightweight material. A vehicle hood structure including a hood panel disposed as an outer surface of a vehicle body,
Tension material is stretched between the terminals on the inner surface of the vehicle body in the hood panel,
A hood structure for a vehicle, wherein a tension curved surface is formed on the hood panel by bending the hood by tensioning the traction material. The tension adjusting mechanism is
A slit member in which a plurality of slit portions arranged apart from each other along the extending direction of the traction material are formed;
An engagement portion provided on the hood panel and engaged with the slit member;
The vehicle hood structure according to claim 20.

Images