JP2019177751A - Hinge arm attachment structure for vehicle front hoods - Google Patents

Abstract

To provide a hinge arm attachment structure for vehicle front hoods capable of exhibiting high rigidity against a load to be applied vertically at the time of opening or closing a front hood.SOLUTION: A hinge arm attachment structure (attachment structure 100) for vehicle front hoods according to the present invention includes a hinge arm 110 that bears a front hood 102 of a vehicle body front part, a hinge bracket 120 to which the hinge arm 110 is attached in a pivotable manner, a vehicle body flank panel (side dash panel 106) that forms a flank of a power unit installation room, and a cowl side panel 130 that couples the hinge bracket 120 with the vehicle body flank panel. The cowl side panel 130 includes a first joint surface 132 to which the hinge bracket 120 is joined, and a second joint surface 134 that extends upwards from an end inside in a vehicle width direction of the first joint surface and is joined with the vehicle body flank panel.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a hinge arm mounting structure for a vehicle front hood.

  For example, Patent Literature 1 discloses a hood hinge attached to a hood provided on the upper side of an engine room of a vehicle body. The hood is pivotally attached to the vehicle body side by the hood hinge. In particular, in Patent Document 1, the vehicle body side hinge member fixed to the vehicle body side includes a first support leg provided with a bent portion and a second support leg whose lower end is not fixed to the apron upper member.

  According to Patent Document 1, when the collision load of the collision body is applied, the second support leg falls inward in the vehicle width direction from the apron upper member, so that the second support leg is below the first support leg. It is said that limiting the deformation to can be suppressed. Further, since the first support leg can be easily deformed downward by the bent portion, it is possible to reduce the collision load acting on the collision body.

JP 2009-23550 A

  When the front hood is opened and closed and when traveling, the apron upper member is loaded in the vertical direction. At this time, when the upper wall of the apron upper member is joined to the vertical wall at the end portion outside the vehicle as in Patent Document 1, the load in the vertical direction is the direction in which the joint portion between the upper wall and the vertical wall is peeled off. It becomes the load of. For this reason, in the structure of patent document 1, it is necessary to further improve the rigidity with respect to the load at the time of opening and closing of a front hood.

  In the vehicle, a device such as a power train (hereinafter simply referred to as a device) is mounted below the hood. For this reason, if the hinge arm collapses toward the inside in the vehicle width direction at the time of a collision, the stroke necessary for shock absorption cannot be secured due to interference with the device, or the device may be damaged. there is a possibility.

  In view of such problems, the present invention has an object to provide a hinge arm mounting structure for a vehicle front hood capable of obtaining high rigidity with respect to a load in the vertical direction when opening and closing the front hood and a load during traveling. It is said.

  In order to solve the above-described problems, a typical configuration of a vehicle front hood hinge arm mounting structure according to the present invention includes a hinge arm that supports a front hood that covers a power unit mounting room at the front of the vehicle body, and the hinge arm rotates. A hinge bracket that can be attached, a vehicle body side panel that forms the side surface of the power unit mounting room, and a cowl side panel that connects the hinge bracket and the vehicle body side panel. The cowl side panel is joined to the hinge bracket. A first joint surface and a second joint surface that extends upward from an inner end in the vehicle width direction of the first joint surface and is joined to the vehicle body side panel.

  ADVANTAGE OF THE INVENTION According to this invention, the hinge arm attachment structure for vehicle front hoods which can obtain high rigidity with respect to the load of the up-down direction at the time of front hood opening and closing and the load at the time of driving | running | working can be provided.

1 is a perspective view of a vehicle to which a vehicle front hood hinge arm mounting structure according to an embodiment is applied. It is an enlarged view of the hinge arm attachment structure for vehicle front hoods of FIG. It is a perspective view of the hinge arm for vehicle front hoods of FIG. It is AA sectional drawing of FIG. FIG. 3 is a perspective view of the cowl side panel of FIG. 2. FIG. 3 is a detailed view of the vehicle front hood hinge arm mounting structure of FIG. 2. It is a figure explaining the hinge bracket of FIG. It is a figure explaining a reinforcement.

  A hinge arm mounting structure for a vehicle front hood according to an embodiment of the present invention includes a hinge arm that supports a front hood that covers a power unit mounting room at the front of the vehicle body, a hinge bracket to which the hinge arm is rotatably mounted, A vehicle body side panel constituting a side surface of the power unit mounting room, a cowl side panel connecting the hinge bracket and the vehicle body side panel, the cowl side panel comprising: a first joint surface to which the hinge bracket is joined; And a second joint surface that extends upward from an end portion of the first joint surface in the vehicle width direction and is joined to the vehicle body side panel.

  In the above configuration, the hinge bracket that rotatably supports the hinge arm is joined to the vehicle body side panel via the cowl side panel. At this time, the cowl side panel is joined to the vehicle body side panel at a second joint surface extending in the vertical direction. As a result, the load in the vertical direction that occurs when the front hood is opened and closed and when traveling is a load in the shear direction with respect to the joint portion between the cowl side panel and the vehicle body side panel. Therefore, it is possible to obtain high rigidity with respect to the load during opening and closing of the front hood and traveling.

  The cowl side panel further includes an inclined wall that inclines downward from the inner end in the vehicle width direction of the first joint wall toward the outer side in the vehicle width, and the hinge arm extends in the vehicle front-rear direction to the front hood. Including a front side portion that is fixed and a rear side portion that extends backward from the front side portion and is curved or bent downward and is fixed to the hinge bracket, and the lower end of the rear side portion overlaps the inclined wall when viewed from above. It should be in position.

  When the collision arm collides with the front hood above the hinge arm, the load is transmitted from the front hood to the hinge arm. By this load, the lowest point of the hinge arm comes into contact with the inclined wall of the cowl side panel. As a result, it is possible to secure a stroke that the hinge arm is displaced downward as much as the vehicle is lowered downward due to the inclination, and it is possible to obtain an effect of absorbing the impact load of the collision body.

  Furthermore, after the lower end of the hinge arm contacts the inclined wall, the hinge arm falls with the hinge bracket to the outside in the vehicle width direction using the inclined wall as a guide. Thereby, the impact absorption effect is enhanced by increasing the stroke corresponding to the collapse of the hinge arm. Further, since the second joint surface side on the vehicle inner side than the hinge bracket is strong against the load from above and has high rigidity, it is possible to further promote the fall of the hinge arm to the outside.

  The hinge bracket may be joined to the vehicle inner side than the hinge arm, and may have a flange that bends to the vehicle inner side and a bead that extends upward and rearward of the vehicle at the center of the hinge bracket. According to such a configuration, the flange and the bead are strong against a load from above the vehicle. For this reason, the lower end of the hinge arm can be reliably brought into contact with the inclined wall by suppressing the deformation to the minimum. Further, since the second joint surface side has high rigidity with respect to a load from above, it is possible to further promote the fall of the hinge bracket and the hinge arm to the outside.

  When viewed from above, a reinforcement may be joined to the back side of the cowl side panel where the lower end of the rear side portion and the inclined wall overlap. Thereby, since the position where the lower end of the hinge arm of the cowl side panel abuts is reinforced by reinforcement, the role of the guide for tilting the hinge arm outward can be sufficiently exhibited.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the examples are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

  FIG. 1 is a perspective view of a vehicle 101 to which a vehicle front hood hinge arm mounting structure (hereinafter referred to as a mounting structure 100) according to this embodiment is applied. In FIG. 1, the state which observed the vehicle 101 (the whole is not shown) from diagonally forward is shown. FIG. 2 is an enlarged view of the hinge arm mounting structure 100 for a vehicle front hood shown in FIG. In order to facilitate understanding, FIG. 2 shows the front hood 102 of FIG. 1 with phantom lines and the state in which the fender panel 104 and the fender top panel 154 are removed.

  As shown in FIG. 1, a front hood 102 that covers a power unit mounting room 103 (see FIG. 2) is disposed at the front of the vehicle body. Below the front hood 102, a fender panel 104 constituting the side surface of the vehicle body is arranged. Inside the fender panel 104, a dash side panel 106 (see FIG. 2) which is a vehicle body side panel constituting the side surface of the power unit mounting room 103 is arranged.

  As shown in FIG. 1, a cowl top panel 152, which is a design panel, is disposed behind the front hood 102 and windshield glass (not shown). A fender top panel 154 is disposed on the side of the cowl top panel 152. The front hood 102 in FIG. 1 is supported by the hinge arm 110 in FIG. 2, and the fender top panel 154 functions as a design panel that covers the hinge arm 110.

  As shown in FIG. 2, the hinge arm 110 is rotatably attached to an upper portion of a hinge bracket 120 that is joined to the vehicle inner side than the hinge arm 110. The hinge arm 110 and the front hood 102 (see FIG. 1) supported by the hinge arm 110 rotate about the hinge 122 shown in FIG. The hinge bracket 120 and the cowl side member outer 108 are connected by a cowl side panel 130.

  FIG. 3 is a perspective view of the vehicle front hood hinge arm mounting structure 100 of FIG. In FIG. 3, the mounting structure 100 is observed from the front inside the vehicle. As shown in FIG. 3, a cowl lower panel 156 is disposed inside the dash side panel 106. A fender apron panel 158 is disposed in front of the dash side panel 106. The fender apron panel 158 forms a closed cross section with the cowl side member outer 108. The front end of the cowl lower panel 156 is joined to the fender apron panel 158 by a fender apron brace 160 shown in FIG. The hinge bracket 120 is joined to the first joining surface 132 (see FIG. 4) of the cowl side panel 130.

  4 is a cross-sectional view taken along line AA in FIG. FIG. 5 is a perspective view of the cowl side panel 130 of FIG. 2, the cowl top panel 152 and the fender top panel 154 are illustrated. However, the cowl top panel 152 and the fender top panel 154 are replaced with the cowl top panel 152 and the fender top panel 154 if they are in front of the cowl top panel 152 and the fender top panel 154. Needless to say, the front hood 102 is disposed.

  As shown in FIGS. 4 and 5, the cowl side panel 130 of the present embodiment has a first joint surface 132 and a second joint surface 134. The first joint surface 132 is a part to which the hinge bracket 120 is joined. The second joint surface 134 is a portion that extends upward from the inner end in the vehicle width direction of the first joint surface 132 and is joined to the dash side panel 106.

  A dash side reinforcement 162 is disposed on the upper part of the dash side panel 106. As a result, the dash side panel 106 is held between the dash side reinforcement 162 and the second joint surface 134 of the cowl side panel 130. By joining at the second joining surface 134 extending in the up-down direction in this way, the up-down direction load generated when the front hood 102 is opened and closed becomes the load in the shear direction 135. Therefore, high bonding strength can be obtained with respect to the load when the front hood 102 is opened and closed.

  A cowl side absorber 164 extending upward therefrom is disposed on the vehicle exterior side of the dash side reinforcement 162. The cowl side absorber 164 has an effect of absorbing an impact by being deformed when receiving a load from above.

  Further, as described above, the strength of joining the cowl side panel 130 and the dash side panel 106 of FIG. 4 is increased, so that the hinge arm 110 and thus the front hood 102 can be stably supported. That is, the support rigidity of the front hood 102 is improved. Therefore, the parting between the front hood 102 and the dash side panel 106 is stable, and the appearance quality can be improved.

  Further, in the above configuration, as shown in FIG. 4, the joining location (second joining surface 134) between the dash side panel 106 and the cowl side panel 130 is the joining location (first joining surface) between the hinge bracket 120 and the cowl side panel 130. 132). Thereby, the load at the time of opening and closing the front hood 102 is reliably transmitted to the second joint wall 134 as a load in the shear direction. Therefore, the joining strength between the cowl side panel 130 and the dash side panel 106 is increased, the parting between the front hood 102 and the dash side panel 106 is stabilized, and the appearance quality can be improved.

  As shown in FIGS. 4 and 5, in the mounting structure 100 of this embodiment, the cowl side panel 130 further includes an inclined wall 136, a third joint surface 138, and a front wall 139. The inclined wall 136 is a portion that is inclined downward from the end on the inner side in the vehicle width direction of the first joint surface 132 toward the outer side in the vehicle width direction. The third joint surface 138 is a portion extending from the end of the inclined wall 136 on the outer side in the vehicle width direction toward the vehicle outer side. Further, as shown in FIG. 3, the front wall 139 is joined to the fender extension panel 166.

  Next, the behavior when the collision body collides with the front hood 102 will be described. The load position is assumed to be a position where the front hood 102 and the hinge arm 110 overlap each other when viewed from above. In the initial stage of the collision of the colliding body, the collision body collides with the front hood 102, whereby the load of the colliding body is transmitted from the front hood 102 to the hinge arm 110. Due to this load, the hinge arm 110 abuts against the inclined wall 136 of the cowl side panel 130.

  In the later stage of the collision of the collision body, after the hinge arm 110 abuts on the inclined wall 136, the hinge arm 110 falls with the hinge bracket 120 outward in the vehicle width direction with the inclined wall 136 as a guide. With this operation, more strokes for absorbing the impact can be secured, and the impact absorbing performance of the collision object can be improved.

  The hinge arm 110 continues to be crushed by the load from the front hood 102. However, since the cowl side panel 130 is highly rigid and joined to the highly rigid cowl side member outer 108, almost no deformation occurs. Further, in the configuration of the present embodiment, the dimension in the width direction of the front hood 102 is large with respect to the displacement amount of the hinge arm 110. Therefore, when the reverse side hinge arm 110, for example, a colliding body collides with the vicinity of the hinge arm 110 on the left side of the vehicle, the hinge arm 110 on the right side of the vehicle does not fall inward in conjunction with it.

  6 is a detailed view of the hinge arm mounting structure 100 for a vehicle front hood shown in FIG. 6A illustrates a state in which the mounting structure 100 in FIG. 2 is observed from above, and FIG. 6B illustrates a state in which the mounting structure 100 in FIG. 2 is observed from the outside of the vehicle. ing. As shown in FIGS. 2 and 6, the hinge arm 110 of this embodiment includes a front side portion 112 and a rear side portion 114. The front side portion 112 is a portion that extends in the vehicle front-rear direction and is fixed to the front hood 102. The rear side portion 114 extends rearward from the front side portion 112 and is curved downward so as to be fixed to the hinge bracket 120.

  As shown in FIG. 6, in this embodiment, the lower end P of the rear side portion 114 of the hinge arm 110 is disposed at a position overlapping the inclined wall 136 in a top view. When a collision object collides with the front hood 102, a load is transmitted from the front hood 102 to the hinge arm 110. With this load, the lower end P of the rear side portion 114 that is the lowest point of the hinge arm 110 abuts against the inclined wall 136 of the cowl side panel 130. At this time, the inclined wall 136 of the cowl side panel 130 is inclined downward from the inner end in the vehicle width direction toward the outer side in the vehicle width, thereby ensuring a stroke in which the hinge arm 110 is displaced downward. Can do. Therefore, it is possible to effectively absorb the impact load of the collision body.

  Furthermore, after the lower end P of the rear side portion 114 of the hinge arm 110 abuts on the inclined wall 136, the hinge arm 110 falls with the inclined wall 136 as a guide together with the hinge bracket 120 outward in the vehicle width direction. Thereby, since the stroke for which the hinge arm 110 falls is increased, the impact absorbing effect can be further enhanced. In addition, since the second joint surface 134 is strong against a load from above and has high rigidity, it is possible to further promote the behavior of the hinge arm 110 falling to the outside.

  FIG. 7 is a view for explaining the hinge bracket 120 of FIG. FIG. 7A illustrates a state where the hinge bracket 120 is observed from the outside of the vehicle, and FIG. 7B illustrates a state where the hinge bracket 120 is observed from the inside of the vehicle. As shown in FIGS. 7A and 7B, in the present embodiment, the hinge bracket 120 includes flanges 124a and 124b that are bent inward of the vehicle, and a bead 126 that extends upward and rearward of the vehicle at the center of the hinge bracket 120. Have

  Since the hinge bracket 120 has the flanges 124a and 124b and the beads 126 as in the present embodiment, the rigidity of the hinge bracket 120 with respect to the load from above the vehicle can be increased. Therefore, the deformation of the hinge bracket 120 can be suppressed to the minimum, and the lower end of the hinge arm 110 can be reliably brought into contact with the inclined wall 136. Further, since the second joint surface 134 side has high rigidity with respect to a load from above the vehicle, it is further promoted that the hinge bracket 120 and the hinge arm 110 fall to the outside.

  FIG. 8 is a diagram for explaining the reinforcement 170. 8A is a perspective view of the hinge arm 110 and the hinge bracket 120 extracted from FIG. 2, and FIG. 8B is a perspective view of the reinforcement 170. As shown in FIG. 8A, when the lower end P of the rear side portion 114 of the hinge arm 110 and the inclined wall 136 of the cowl side panel 130 overlap with each other when viewed from above, the reinforcement 170 is joined to the back side of the cowl side panel 130. Has been.

  As shown in FIG. 8B, the reinforcement 170 has a first contact surface 172, a second contact surface 176, and a third contact surface 178. The first contact surface 172, the second contact surface 176, and the third contact surface 178 are surfaces that contact the back surfaces of the first joint surface 132, the inclined wall 136, and the third joint surface 138 of the cowl side panel 130, respectively. is there. In this way, by reinforcing the position where the lower end of the hinge arm 110 of the cowl side panel 130 abuts with the reinforcement 170, the cowl side panel 130 can sufficiently exert the role of a guide for tilting the hinge arm 110 outward. It becomes possible.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to this example. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  The present invention can be used for a hinge arm mounting structure for a vehicle front hood.

DESCRIPTION OF SYMBOLS 100 ... Mounting structure, 102 ... Front hood, 103 ... Power unit mounting room, 104 ... Fender panel, 106 ... Dash side panel, 108 ... Cowl side member outer, 110 ... Hinge arm, 112 ... Front side part, 114 ... Rear side part, 120 ... Hinge bracket, 122 ... Hinge, 124a ... Flange, 124b ... Flange, 126 ... Bead 130 ... Cowl side panel, 132 ... First joint surface, 134 ... Second joint surface, 136 ... Inclined wall, 138 ... Third joint Surface, 139 ... Front wall, 152 ... Cowl top panel, 154 ... Fender top panel, 156 ... Cowl lower panel, 158 ... Fender apron panel, 160 ... Fender apron brace, 162 ... Dash side reinforcement, 164 ... Cowl side absorber, 166 ... Fe Zehnder extension panel 170 ... reinforcement, 172 ... first abutment surface 176 ... second contact surface, 178 ... third abutment surface

Claims (4)

A hinge arm that supports the front hood that covers the power unit mounting room at the front of the vehicle body,
A hinge bracket to which the hinge arm is rotatably attached;
A vehicle body side panel constituting a side surface of the power unit mounting room;
A cowl side panel connecting the hinge bracket and the vehicle body side panel;
The cowl side panel is

A first joining surface to which the hinge bracket is joined;
A hinge arm mounting structure for a vehicle front hood, comprising: a second joint surface that extends upward from an end of the first joint surface in the vehicle width direction and is joined to the vehicle body side panel. The cowl side panel is
Further including an inclined wall that inclines downward from the inner end in the vehicle width direction of the first joint wall toward the outer side in the vehicle width direction;
The hinge arm is
A front side portion extending in the vehicle front-rear direction and fixed to the front hood;
A rear side portion that extends rearward from the front side portion and is curved or bent downward and is fixed to the hinge bracket;
2. The hinge arm mounting structure for a vehicle front hood according to claim 1, wherein a lower end of the rear side portion is in a position overlapping the inclined wall in a top view. The hinge bracket is
It is joined to the vehicle inner side than the hinge arm,
The hinge arm mounting structure for a vehicle front hood according to claim 1 or 2, further comprising a flange that bends inward of the vehicle and a bead that extends upward and rearward of the vehicle at a central portion of the hinge bracket.   The reinforcement is joined to the back side of the cowl side panel of the position where the lower end of the said rear side part and the said inclination wall overlap in the top view, The Claim 1 characterized by the above-mentioned. Hinge arm mounting structure for vehicle front hood.

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