CN110316256B

CN110316256B - Hinge arm mounting structure for vehicle front hood

Info

Publication number: CN110316256B
Application number: CN201910162959.8A
Authority: CN
Inventors: 大仓康平; 伊藤研作
Original assignee: Suzuki Motor Corp
Current assignee: Suzuki Motor Corp
Priority date: 2018-03-30
Filing date: 2019-03-05
Publication date: 2021-11-30
Anticipated expiration: 2039-03-05
Also published as: DE102019108195A1; CN110316256A; FR3079492A1; FR3079492B1; JP7110674B2; JP2019177751A

Abstract

The present invention aims to provide a hinge arm mounting structure for a front hood of a vehicle, which can obtain high rigidity relative to a load in a vertical direction when the front hood is opened and closed. The structure of a hinge arm mounting structure (100)) for a vehicle front hood according to the present invention is characterized by comprising: a hinge arm (110) that supports a front hood (102) at the front of the vehicle body; a hinge bracket (120) for mounting the hinge arm (110) and the hinge arm being rotatable; a vehicle body side panel (cowl side panel (106)) that constitutes a side surface of the power unit mounting chamber; and a cowl side panel (130) that connects the hinge bracket (120) and the vehicle body side panel, wherein the cowl side panel (130) has: a first engagement surface (132) that engages the hinge bracket (120); and a second joint surface (134) that extends upward from the vehicle width direction inner end of the first joint surface and is joined to the side body panel.

Description

Hinge arm mounting structure for vehicle front hood

Technical Field

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

Background

For example, patent document 1 discloses a hood hinge attached to a hood provided above an engine room of a vehicle body. The hood is rotatably attached to the vehicle body side by the hood hinge. In particular, in patent document 1, a vehicle body side hinge member fixed to a 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.

In patent document 1, when a collision load of a colliding body acts, the second support leg drops from the apron upper member toward the vehicle width direction inner side, and thereby the second support leg can be prevented from restricting the first support leg from deforming downward. Further, the first support leg can be easily deformed downward by the bent portion, and therefore, the collision load acting on the colliding body can be reduced.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2009-23550

Disclosure of Invention

Problems to be solved by the invention

When the front hood is opened or closed or when the vehicle is traveling, a vertical load is applied to the apron upper member. At this time, when the end portion of the upper wall of the apron upper member on the vehicle outer side is joined to the vertical wall as in patent document 1, the vertical load becomes a load in a direction in which the joined portion between the upper wall and the vertical wall is separated. Therefore, the structure of patent document 1 needs to further improve rigidity against a load when the front hood is opened and closed.

In addition, a device such as a power train (hereinafter simply referred to as a device) is mounted below the hood of the vehicle. Therefore, in the case of a structure in which the hinge arms fall toward the vehicle width direction inner side when the vehicle is involved in a collision, the stroke required for absorbing the impact may not be sufficiently ensured or the device may be damaged due to interference with the device.

The present invention has been made in view of the above-described problems, and an object thereof is to provide a hinge arm mounting structure for a vehicle front hood, which can obtain high rigidity against a vertical load when the front hood is opened and closed and a load when the vehicle is traveling.

Means for solving the problems

In order to solve the above problems, a typical structure of a hinge arm mounting structure for a vehicle front hood according to the present invention includes: a hinge arm that supports a front hood that covers a power unit mounting chamber in a front portion of a vehicle body; a hinge bracket for mounting the hinge arm, the hinge arm being rotatable; a vehicle body side panel that constitutes a side surface of the power unit mounting chamber; and a cowl side panel that connects the hinge bracket and the vehicle body side panel, the cowl side panel including: a first engagement surface that engages with the hinge bracket; and a second joint surface that extends upward from an end portion on the vehicle width direction inner side of the first joint surface and is joined to the vehicle body side panel.

ADVANTAGEOUS EFFECTS OF INVENTION

The present invention can provide a hinge arm mounting structure for a vehicle front hood, which can obtain high rigidity against a load in the vertical direction when the front hood is opened and closed and a load when the vehicle is running.

Drawings

Fig. 1 is a perspective view of a vehicle to which a hinge arm mounting structure for a vehicle front hood according to the present embodiment is applied.

Fig. 2 is an enlarged view of the vehicle front hood hinge arm mounting structure in fig. 1.

Fig. 3 is a perspective view of the hinge arm for the front hood of the vehicle in fig. 2.

Fig. 4 is a sectional view taken along line a-a in fig. 2.

Fig. 5 is a perspective view of the dash side panel in fig. 2.

Fig. 6 is a detailed view of the vehicle front hood hinge arm mounting structure in fig. 2.

Fig. 7 is a view for explaining the hinge bracket in fig. 3.

Fig. 8 is a diagram for explaining the reinforcing member.

Description of the reference numerals

100. An installation structure; 102. a front engine cover; 103. a power unit mounting chamber; 104. a fender; 106. a front wall side plate; 108. an outer cowl side member; 110. a hinge arm; 112. a front side portion; 114. a rear side portion; 120. a hinge frame; 122. a hinge; 124a, a flange; 124b, a flange; 126. reinforcing ribs; 130. a cowl side panel; 132. a first bonding surface; 134. a second bonding surface; 136. an inclined wall; 138. a third bonding surface; 139. a front wall; 152. a front wall upper cover plate; 154. a mud-blocking upper cover plate; 156. a front wall lower cover plate; 158. a mud baffle coaming; 160. a fender apron bracket; 162. a cowl side reinforcement; 164. a cowl side cover shock absorbing portion; 166. a fender extension plate; 170. a reinforcement; 172. a first abutting surface; 176. a second abutting surface; 178. a third abutting surface.

Detailed Description

A hinge arm attachment structure for a vehicle front hood according to an aspect of the present invention includes: a hinge arm that supports a front hood that covers a power unit mounting chamber in a front portion of a vehicle body; a hinge bracket for mounting the hinge arm, the hinge arm being rotatable; a vehicle body side panel that constitutes a side surface of the power unit mounting chamber; and a cowl side panel that connects the hinge bracket and the vehicle body side panel, the cowl side panel including: a first engagement surface that engages with the hinge bracket; and a second joint surface that extends upward from an end portion on the vehicle width direction inner side of the first joint surface and is joined to the vehicle body side panel.

In the above-described structure, the hinge bracket that rotatably supports the hinge arm is joined to the vehicle body side panel via the cowl side. At this time, the cowl side panel is joined to the body side panel at a second joining surface extending in the up-down direction. Thus, the vertical load generated when the front hood is opened or closed or during traveling becomes a load in the shearing direction with respect to the joint portion between the cowl side panel and the side body panel. Therefore, high rigidity can be obtained against the load during opening and closing of the front hood and during traveling.

The cowl side panel may further include an inclined wall that extends from an end portion on the vehicle width direction outer side of the first joint surface and is inclined downward as the inclined wall extends outward in the vehicle width direction, and the hinge arm may include: a front side portion that extends in a vehicle front-rear direction and is fixed to the front hood; and a rear portion extending rearward from the front portion and bent or curved downward in a convex shape, and fixed to the hinge bracket, wherein a lower end of the rear portion is positioned to overlap the inclined wall in a plan view.

Since the hinge arm is positioned to overlap the inclined wall in a plan view, when the front hood positioned above the hinge arm is collided with a collision body, a load is transmitted from the front hood to the hinge arm. Under this load, the lowest point of the hinge arm abuts against the inclined wall of the cowl side. This ensures a downward displacement stroke of the hinge arm by the amount of downward displacement of the hinge arm due to the inclination, and provides an effect of absorbing the impact load of the colliding body.

After the lower end of the hinge arm abuts against the inclined wall, the hinge arm is tilted outward in the vehicle width direction together with the hinge bracket under the guidance of the inclined wall. Thus, the impact absorption effect is improved by increasing the stroke corresponding to the falling amount of the hinge arm. Further, the second joint surface located on the vehicle inner side of the hinge bracket is strong in bearing capacity against a load from above and high in rigidity, and therefore, the hinge arm can be further promoted to fall to the outer side.

The hinge bracket may be joined to the hinge arm at a position on a vehicle inner side of the hinge arm, and the hinge bracket may include: a flange bent toward a vehicle inside; and a reinforcing rib extending upward and rearward of the vehicle at a central portion of the hinge bracket. With this structure, the flange and the reinforcing bead are strong against the load from above the vehicle. Therefore, the deformation can be suppressed to the minimum, and the lower end of the hinge arm can be reliably brought into contact with the inclined wall. Further, since the rigidity of the second joint surface side with respect to a load from above is high, the hinge bracket and the hinge arm can be further promoted to fall outward.

A reinforcement may be joined to a position where a lower end of the rear portion on the back surface side of the front panel overlaps the inclined wall in a plan view. Thus, the position of the cowl side panel that abuts the lower end of the hinge arm can be reinforced by the reinforcement, and therefore, the guide function of tilting the hinge arm outward can be sufficiently exhibited.

Examples

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Dimensions, materials, and other specific numerical values shown in the present embodiment are merely examples for facilitating understanding of the present invention, and are not intended to limit the present invention unless otherwise specifically described. In the present specification and the drawings, the same reference numerals are given to elements having substantially the same function and configuration, so that overlapping description is omitted, and elements not directly related to the present invention are not shown.

Fig. 1 is a perspective view of a vehicle 101 to which a hinge arm mounting structure for a vehicle front hood (hereinafter referred to as a mounting structure 100) of the present embodiment is applied. Fig. 1 shows a state of a vehicle 101 (not shown) viewed from diagonally forward. Fig. 2 is an enlarged view of the vehicle front hood hinge arm mounting structure 100 in fig. 1. Fig. 2 shows the front hood 102 in fig. 1 in a broken line for easy understanding, and fig. 2 shows a state where the fender 104 and the fender cover 154 are removed.

As shown in fig. 1, a front hood 102 that covers a power unit mounting chamber 103 (see fig. 2) is disposed at the front of the vehicle body. A fender 104 constituting a side surface of the vehicle body is disposed below the front hood 102. A cowl side 106 (see fig. 2) which is a side panel of the vehicle body constituting a side surface of the power unit mounting chamber 103 is disposed inside the fender 104.

As shown in fig. 1, a cowl top 152, which is an exterior decorative panel, is disposed behind the front hood 102 and between the front hood 102 and a windshield (not shown). A fender upper cover 154 is disposed on a side of the cowl upper cover 152. The front hood 102 in fig. 1 is supported by the hinge arm 110 in fig. 2, and the fender cover 154 functions as an appearance decorative plate covering the hinge arm 110.

As shown in fig. 2, the hinge arm 110 is rotatably attached to an upper portion of the hinge bracket 120, and the hinge bracket 120 is joined to the hinge arm 110 at a position on the vehicle inner side of the hinge arm 110. The hinge arm 110 and the front hood 102 (see fig. 1) supported by the hinge arm can rotate about the hinge 122 shown in fig. 2. Hinge bracket 120 and outer cowl side member 108 are joined together by cowl side cover 130.

Fig. 3 is a perspective view of the vehicle front hood hinge arm mounting structure 100 in fig. 2. The mounting structure 100 is viewed from the vehicle interior front side in fig. 3. As shown in fig. 3, a cowl panel 156 is disposed on the vehicle interior side of the cowl side panel 106. A fender 158 is disposed forward of the dash side panel 106. The mudguard 158 forms a closed section together with the outer cowl side member 108. The forward end of cowl 156 is coupled to a fender 158 by a fender bracket 160 shown in FIG. 3. Hinge bracket 120 is engaged with first engagement surface 132 (see fig. 4) of cowl side 130.

Fig. 4 is a sectional view taken along line a-a in fig. 2. Fig. 5 is a perspective view of the cowl side 130 in fig. 2. Note that, although the cowl panel 152 and the fender panel 154 are shown in the cross section taken along the line a-a in fig. 2 shown in fig. 4, it goes without saying that the cowl panel 152 and the fender panel 154 are disposed at a position forward of the cowl panel 152 and the fender panel 154, and the front hood 102 is disposed.

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

A cowl side reinforcement 162 is disposed at an upper portion of the cowl side 106. Thus, the cowl side 106 is sandwiched between the cowl side reinforcement 162 and the second joint surface 134 of the cowl side 130. By joining the second joining surfaces 134 extending in the vertical direction as described above, the vertical load generated when the front hood 102 is opened and closed can be converted into the load in the shear direction 135. Therefore, a high bonding strength can be obtained against the load when front hood 102 is opened and closed.

A cowl side cushion portion 164 extending upward from the cowl side reinforcement 162 is disposed on the vehicle exterior side of the cowl side reinforcement. The cowl side cushion portion 164 is deformed when receiving a load from above, and has an effect of absorbing an impact.

As described above, the joint strength between the cowl side 130 and the cowl side 106 in fig. 4 is high, and thus the hinge arm 110 and the front hood 102 can be stably supported. That is, the support rigidity with respect to the front hood 102 is improved. Therefore, the parting between the front hood 102 and the cowl side 106 is stabilized, and the appearance quality can be improved.

In the above configuration, as shown in fig. 4, the joint portion (second joint surface 134) between the cowl side 106 and the cowl side 130 is located above the joint portion (first joint surface 132) between the hinge bracket 120 and the cowl side 130. This allows the load when the front hood 102 is opened and closed to be reliably transmitted to the second joint surface 134 as a load in the shearing direction. Therefore, the joining strength between the cowl side 130 and the cowl side 106 can be improved, the parting between the front hood 102 and the cowl side 106 can be stabilized, and the appearance quality can be improved.

Further, as shown in fig. 4 and 5, in the mounting structure 100 of the present embodiment, the cowl side 130 further has an inclined wall 136, a third engagement surface 138, and a front wall 139. The inclined wall 136 extends from the vehicle width direction outer side end portion of the first joint surface 132 to the vehicle width direction outer side and is inclined downward. The third joint surface 138 is a portion extending from the vehicle width direction outer side end portion of the inclined wall 136 toward the vehicle outer side. Also, as shown in FIG. 3, the front wall 139 engages the fender extension panel 166.

Next, the behavior of the front hood 102 after the collision with the colliding body will be described. The load position is assumed to be a position where the front hood 102 overlaps the hinge arm 110 in a plan view. At the initial stage of the collision with the colliding body, the front hood 102 collides with the colliding body, and therefore, the load from the colliding body is transmitted from the front hood 102 to the hinge arms 110. Under this load, hinge arm 110 abuts inclined wall 136 of cowl side 130.

In the latter stage of the collision with the collision body, after the hinge arm 110 abuts against the inclined wall 136, the hinge arm 110 falls toward the vehicle width direction outer side together with the hinge bracket 120 under the guide of the inclined wall 136. With this operation, the stroke for absorbing the impact can be ensured longer, and the performance of absorbing the impact of the colliding body can be improved.

Further, the hinge arms 110 are continuously deformed by the load from the front hood 102. However, since the cowl side 130 has high rigidity and is joined to the highly rigid outer cowl side member 108, the cowl side 130 is hardly deformed. In the structure of the present embodiment, the dimension of the front hood 102 in the width direction is large relative to the displacement amount of the hinge arm 110. Therefore, the hinge arm 110 on the opposite side does not tilt inward in conjunction with a collision, and for example, in the case where a collision with a collision body occurs in the vicinity of the hinge arm 110 on the vehicle left side, the hinge arm 110 on the vehicle right side does not tilt inward in conjunction with a collision.

Fig. 6 is a detailed view of the hinge arm mounting structure 100 for a front hood of a vehicle in fig. 2. Fig. 6 (a) shows a state in which the mounting structure 100 in fig. 2 is viewed from above, and fig. 6 (b) shows a state in which the mounting structure 100 in fig. 2 is viewed from the vehicle exterior side. As shown in fig. 2 and 6, the hinge arm 110 of the present 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 portion 114 extends rearward from the front portion 112 and is bent downward in a convex shape and fixed to the hinge bracket 120.

In the present embodiment, as shown in fig. 6, the lower end P of the rear portion 114 of the hinge arm 110 is disposed at a position overlapping the inclined wall 136 in plan view. When the front hood 102 is collided with a collision body, load is transmitted from the front hood 102 to the hinge arms 110. Due to this load, the lowest point of the hinge arm 110, that is, the lower end P of the rear portion 114 abuts against the inclined wall 136 of the cowl side 130. At this time, since the inclined wall 136 of the cowl side 130 is inclined downward as it extends from the vehicle width direction outer side end portion of the first joint surface 132 toward the vehicle width direction outer side, a stroke of downward displacement of the hinge arm 110 can be ensured. Therefore, the impact load from the colliding body can be effectively absorbed.

Then, after the lower end P of the rear portion 114 of the hinge arm 110 abuts against the inclined wall 136, the hinge arm 110 falls toward the vehicle width direction outer side together with the hinge bracket 120 under the guide of the inclined wall 136. This can increase the stroke corresponding to the amount of fall of the hinge arm 110, and thus can further improve the impact absorption effect. Further, since the second joint surface 134 side has a strong ability to receive a load from above and has high rigidity, the behavior of the hinge arm 110 tilting outward can be further promoted.

Fig. 7 is a view illustrating the hinge bracket 120 in fig. 3. Fig. 7 (a) shows a state in which the hinge bracket 120 is viewed from the vehicle exterior side, and fig. 7 (b) shows a state in which the hinge bracket 120 is viewed from the vehicle interior side. As shown in fig. 7 (a) and 7 (b), in the present embodiment, the hinge bracket 120 includes: a flange 124a and a flange 124b that are bent toward the vehicle inside; and a reinforcing rib 126 extending upward and rearward of the vehicle at a central portion of the hinge bracket 120.

By providing the hinge bracket 120 with the

flanges

124a, 124b, and the rib 126 as in the present embodiment, the rigidity of the hinge bracket 120 against a load from above the vehicle can be increased. Therefore, the deformation of the hinge bracket 120 can be minimized, 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 against a load from above the vehicle, the hinge bracket 120 and the hinge arm 110 can be further promoted to fall to the outside.

Fig. 8 is a diagram illustrating the reinforcement 170. Fig. 8 (a) is a perspective view of the hinge arm 110 and the hinge bracket 120 shown in fig. 2, and fig. 8 (b) is a perspective view of the reinforcement 170. As shown in fig. 8 (a), a reinforcement 170 is joined to the back side of the cowl side 130, and the reinforcement 170 is located at a position where the lower end P of the rear portion 114 of the hinge arm 110 overlaps the inclined wall 136 of the cowl side 130 in a plan view.

As shown in fig. 8 (b), 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 is a surface that contacts the rear surface of the first joint surface 132 of the cowl side panel 130, the second contact surface 176 is a surface that contacts the rear surface of the inclined wall 136 of the cowl side panel 130, and the third contact surface 178 is a surface that contacts the rear surface of the third joint surface 138 of the cowl side panel 130. As described above, the reinforcement member 170 reinforces the position of the cowl side 130 that abuts the lower end of the hinge arm 110, and the guide function of the cowl side 130 to tilt the hinge arm 110 outward can be sufficiently exerted.

The preferred embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to these embodiments. It is obvious that various modifications and changes within the scope of the claims will occur to those skilled in the art, and it is needless to say that these modifications and changes also fall within the scope of the present invention.

Industrial applicability

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

Claims

1. A hinge arm mounting structure for a vehicle front hood,

the hinge arm mounting structure for a vehicle front hood includes:

a hinge arm that supports a front hood that covers a power unit mounting chamber in a front portion of a vehicle body;

a hinge bracket for mounting the hinge arm, the hinge arm being rotatable;

a vehicle body side panel that constitutes a side surface of the power unit mounting chamber; and

a cowl side panel that connects the hinge bracket and the vehicle body side panel,

the cowl side panel includes:

a first engagement surface that engages the hinge bracket;

a second joint surface that extends upward from an end portion on the vehicle width direction inner side of the first joint surface and is joined to the side body panel, an

An inclined wall extending from an end portion of the first joint surface on the vehicle width direction outer side and inclined downward toward the vehicle width direction outer side,

the hinge arm has:

a front side portion that extends in a vehicle front-rear direction and is fixed to the front hood; and

a rear portion extending rearward from the front portion and bent or curved downward in a convex shape, and fixed to the hinge frame,

the lower end of the rear side portion is located at a position overlapping the inclined wall in a plan view.

2. The vehicle front hood hinge arm mounting structure according to claim 1,

the hinge bracket is engaged with the hinge arm at a position further toward the vehicle inside than the hinge arm,

the hinge bracket has: a flange bent toward a vehicle inside; and a reinforcing rib extending upward and rearward of the vehicle at a central portion of the hinge bracket.

3. The vehicle front hood hinge arm mounting structure according to claim 1 or 2,

a reinforcement is joined to a position where a lower end of the rear portion on the back surface side of the front panel overlaps the inclined wall in plan view.