JP5448713B2 - Automotive exterior resin panels - Google Patents

Description

  The present invention relates to, for example, an exterior resin panel that forms an exterior of an automobile.

  Conventionally, an exterior panel of an automobile is sometimes molded with a resin. For example, Patent Document 1 discloses a bonnet hood in which a resin outer panel and a resin inner panel are joined to each other with a predetermined closed cross-sectional space facing each other, and the bonnet hood is a hinge bracket. It can be attached to the car body via On the back surface of the outer panel, a boss is integrally projected toward the inner panel side, and a fitting hole is formed through the inner panel. Then, with the tip of the boss fitted into the fitting hole of the inner panel, the hinge bracket is placed along the inner panel, a fixing bolt is inserted into the through hole formed in the hinge bracket, and the boss The outer panel, the inner panel and the hinge bracket are assembled together by screwing the fixing bolt into the mounting hole formed at the tip.

Japanese Utility Model Publication No. 3-40172 (FIG. 1)

  By the way, in recent years, the automobile industry has been trying to obtain high customer satisfaction by reducing the weight of the vehicle body and improving the quality of the vehicle body for the purpose of improving fuel efficiency. On the other hand, in Patent Document 1, since the boss is integrally projected on the back surface of the outer panel, sink marks are likely to occur at the boss-corresponding portion on the outer panel surface when the outer panel is molded, and the appearance quality is stable. It is hard to do. Further, the bonnet hood is heavier as a whole because the space between the outer panel and the inner panel is designed to be relatively wide, and the bosses project from the outer panel. In order to improve these, a method of eliminating the boss of the outer panel and making the inner panel as small as possible to reduce the weight can be considered. However, to reduce the weight, the space between the outer panel and the inner panel is reduced to make the inner panel smaller, and the inner panel is also made thinner.If the hinge bracket is fixed to the bonnet hood with fixing bolts, When the tip of the fixing bolt protrudes to near the back surface of the outer panel between the outer panel and the inner panel, and when a large impact is applied to the outer panel such that a person collides, the outer panel and the fixing bolt The tip of the fixing bolt may come into contact with the tip, and the tip of the fixing bolt may break through the outer panel, or the impact may cause the fixing bolt to come off the inner panel, causing the bonnet hood to fall off and causing parts to scatter. There is.

  The present invention has been made in view of such points, and an object of the present invention is to provide an exterior resin panel that is lightweight and has good appearance quality and is safe even when subjected to a large impact.

  In order to achieve the above object, the present invention is characterized in that a protrusion is integrally projected toward the outer panel in the vicinity of a mounting hole formed in the inner panel.

That is, in 1st invention, it is comprised by the resin-made outer panel and the resin-made inner panel joined so that it might overlap with the back side of this outer panel, and it becomes a junction part with the said outer panel in the said inner panel. A leg part and a flat part that is continuous so as to have a space part between the leg part tip and the outer panel back surface are formed, and an attachment hole for attaching a member to be attached is formed in the flat part. The fixing member is attached to the inner panel by inserting the fixing member into the through hole formed in the mounting member and the mounting hole along the flat portion, and mounting the mounting member to the inner panel. tip a packaging resin panel of a motor vehicle which is located above the space portion through the mounting hole, the planar portion, a plurality have a thick portion of the insert nut is embedded with the mounting hole Between the該隣Ri fit thick portion, the protruding portion extending over the thick portion adjacent the is integrally projected toward the outer panel side, the from the tip of the tip of the protruding portion the fixing member It was set as the structure located in the outer panel side.

In 2nd invention, it was set as the structure in which the clearance gap was formed between the said projection part and the said outer panel back surface in 1st invention .

  According to the first invention, even when a large impact is applied such that a person collides with the outer panel, the outer panel comes into contact with the tip of the protrusion before contacting the tip of the fixing member. Therefore, the front end of the fixing member does not break through the outer panel and can be a safe exterior resin panel, and the fixing member does not come off from the inner panel, and scattering of components can be prevented. Moreover, the inner panel is reduced in size by eliminating the boss integrally projecting from the outer panel as in Patent Document 1, and by narrowing the space between the outer panel and the inner panel, thereby reducing the weight of the exterior resin panel. be able to. Furthermore, by eliminating the boss of the outer panel, sink marks caused by the boss do not occur when the outer panel is molded, and the appearance quality of the exterior resin panel can be improved.

Moreover, since the strength between the adjacent mounting holes in the flat portion is increased, the rigidity around the mounting holes can be increased.

According to the second invention, even when the exterior resin panel vibrates during traveling of the automobile, the outer panel and the protrusion do not contact each other. Therefore, it is possible to suppress abnormal noise generated by the contact between the outer panel and the protrusion .

It is the top view which looked at the bonnet hood which concerns on embodiment from the inner panel side. 2A is a cross-sectional view taken along line AA in FIG. 1, and FIG. 2B is a view of the inner panel around the hinge bracket as viewed from the outer panel side. 3A is a cross-sectional view taken along line BB in FIG. 1, and FIG. 2B is a view of the inner panel around the striker as seen from the outer panel side. FIG. 3 is a diagram corresponding to FIG. 2 according to a modification of the embodiment.

Will be described in detail with reference to the drawings in the example of embodiment is applied to the attachment site of Hinjiburake' bets hood of the present invention. The following description of the preferred embodiment is merely exemplary in nature.

  FIG. 1 shows a hood hood (exterior resin panel) 1 according to an embodiment of the present invention. The bonnet hood 1 is a plate-like component extending in the vehicle width direction, and is attached to the vehicle body Bd side via a hinge bracket (attached member) 11 so as to cover an engine room (not shown) in front of the vehicle body. (See FIG. 2). The hinge bracket 11 includes a first hinge constituent member 13 having a through hole h2 through which a fixing bolt (fixing member) B1 for fixing to the hood hood 1 is inserted, as indicated by phantom lines in FIG. The second hinge constituting member 15 is rotatably attached to the first hinge constituting member 13 with the rotating shaft 17 as an axis, and is fixed to the vehicle body Bd side with a fixing bolt B3. The hinge bracket 11 is attached to the bonnet hood 1 by inserting a fixing bolt B1 into a mounting hole h1 and a through hole h2, which will be described later. The hood hood 1 can be opened and closed with respect to the vehicle body Bd by the hinge bracket 11.

  The front and rear peripheral edges of the bonnet hood 1 are gently curved so that the center portion in the vehicle width direction is located in the front of the vehicle body, and the vehicle body front and rear of the bonnet hood 1 as it goes to the left and right sides of the vehicle body Bd. The shape is narrowed in the direction. The bonnet hood 1 is composed of a resin outer panel 3 constituting the outer plate side of the vehicle body Bd and a resin inner panel 5 joined so as to overlap the back side of the outer panel 3. Further, as shown in FIG. 1, a striker St is attached to the center of the front end of the hood hood 1, and by engaging the striker St with a latch mechanism (not shown) provided on the vehicle body Bd, The bonnet hood 1 can be fixed to the vehicle body Bd.

  The outer panel 3 and the inner panel 5 are formed by injection molding using, for example, a sheet molding compound (SMC), glass fiber reinforced polypropylene, or the like as a molding material.

  As shown in FIG. 1, the inner panel 5 has an outer peripheral frame 5a formed along an outer peripheral edge of the inner panel 5, and a lattice shape in the vehicle longitudinal direction and the vehicle width direction on the inner side of the outer peripheral frame 5a. And a pair of left and right mounting seats 7 for attaching the hood hood 1 to the hinge bracket 11 is formed on the left and right ends of the inner panel 5 at the rear of the vehicle body. Yes.

  As shown in FIG. 2, the mounting seat 7 has a leg portion 71 having a flange portion 71 a that has a hat-like longitudinal section and a joint portion with the back surface side of the outer panel 3, and a tip of the leg portion 71. And a flat portion 73 that is continuous so as to have a space portion R1 between the outer panel 3 and the back surface of the outer panel 3.

The flat portion 73 has a plate shape that is gently inclined downward toward the front of the vehicle body, and a pedestal portion (thick portion) 77 in which an insert nut Nu for attaching the first hinge constituent member 13 is embedded. , And a projecting portion 75 projecting integrally toward the outer panel 3 side across the adjacent pedestal portions 77 .

  As shown in FIGS. 2A and 2B, the pedestal portion 77 is formed side by side on both sides of the protrusion 75 in the longitudinal direction of the vehicle body, and protrudes toward the outer panel 3 and in a plan view. It has a substantially circular shape. The outer diameter of the pedestal portion 77 is reduced as it goes upward, and the thickness thereof is larger than the thickness of the flat portion 73. A mounting hole h1 for screwing the fixing bolt B1 is formed in the insert nut Nu. The insert nut Nu is embedded in the pedestal portion 77 so that the central axis of the mounting hole h1 is substantially in the vertical direction. .

  The protrusion 75 protrudes upward and extends in the longitudinal direction of the vehicle body, and a plate-like portion 75b extending in the vehicle width direction so as to intersect the plate-like portion 75a at the central portion of the plate-like portion 75a. And has a cross-sectional shape. Further, the tip shape of the plate-like portion 75 a of the protrusion 75 is parallel to the back surface of the outer panel 3 so as not to contact the back surface of the outer panel 3. A gap s1 is formed between the projection 75 and the back surface of the outer panel 3 so that the contact does not occur as long as the vehicle is vibrated during driving or is lightly pressed by a person. Furthermore, the tip of the protrusion 75 is located closer to the outer panel 3 than the tip of the fixing bolt B1 with the hinge bracket 11 attached to the inner panel 5.

On the other hand, as shown in FIG. 3, in front of the hood 1, rubber seal member C e for sealing is provided between the hood 1 and the front grill Fg and the vehicle body Bd, the inner panel 5 is formed with a mounting seat 9 for mounting the sealing member Ce.

  The sealing member Ce extends along the peripheral edge of the bonnet hood 1 on the back surface side of the front end, and has a substantially U-shaped cross section so as to open to the rear of the vehicle body. A reinforcing plate P having an L-shaped cross section is integrally embedded inside the base end of the sealing member Ce, and the sealing member Ce is attached to the mounting seat 9 at the reinforcing plate P embedded portion of the sealing member Ce. A through hole h3 is formed.

  As shown in FIG. 3 (a), the mounting seat 9 has a substantially U-shaped longitudinal section, and has a leg portion 91 having a flange portion 91a that becomes a joint portion with the back surface side of the outer panel 3. The leg portion 91 is provided with a flat portion 93 that is continuous with the space R3 between the outer panel 3 and the back surface of the outer panel 3.

The planar portion 93 is formed in a lower inclined the plate toward the vehicle front, a fastener engaging hole h 4 for fixing the sealing member Ce in Fast Na F 1, the peripheral edge of said fastener engaging hole h4 And a protrusion 95 protruding integrally with the outer panel 3 side. As shown in FIG. 1, the fastener engaging holes h4 are provided at four positions at substantially equal intervals on the front end portion of the inner panel 5, and the protrusions 95 are adjacent to one side of the fastener engaging holes h4 in the vehicle width direction. Is formed.

  As shown in FIG. 3 (b), the projecting portion 95 protrudes upward from the periphery of the fastener engaging hole h4 and extends in the longitudinal direction of the vehicle body, and from the central portion of the plate portion 95a in the longitudinal direction of the vehicle body. It consists of a plate portion 95b extending to the opposite side of the position where the fastener engaging hole h4 is formed, and has a T-shaped cross section. The tip shape of the protrusion 95 is parallel to the back surface of the outer panel 3 so as not to contact the back surface of the outer panel 3, similarly to the protrusion 75 formed on the mounting seat 7 for mounting to the hinge bracket 11. ing. A gap s3 is formed between the protrusion 95 and the back surface of the outer panel 3. Further, the tip of the projection 95 is located closer to the outer panel 3 than the tip of the fastener F1 in a state where the seal member Ce is attached to the inner panel 5.

According to embodiments of the above, the present invention, even when applied humans outer panel 3 is large impact such as a collision, the leading end of the protrusion 75 is positioned on the outer panel 3 side from the front end of the fixing bolt B1 because there, the outer panel 3 comes into contact with the tip of the projection portion 7 5 before contacting the distal end of the fixing bolt B 1, to keep the space provided between the rear surface of the inner panel 5 and the outer panel 3 It becomes like this. Therefore, the tip of the fixing bolt B1 does not break through the outer panel 3, and the hood hood 1 can be made safe. Further, the fixing bolt B1 does not come off the inner panel 5 and prevents the parts from scattering. can do. Moreover, the inner panel 5 is reduced in size by eliminating the boss formed integrally with the outer panel 3 as in Patent Document 1 and by narrowing the space between the outer panel 3 and the inner panel 5. The weight can be reduced. Further, by eliminating the boss of the outer panel 3, sink marks caused by the boss do not occur when the outer panel 3 is molded, and the appearance quality of the hood hood 1 can be improved.

Further, since the gap s 1 is formed between the outer panel 3 the rear surface and the protruding portion 7 5, even if hood 1 is vibrated during the running of an automobile and the outer panel 3 and the protrusion 7 5 without contact, thereby, it is possible to the outer panel 3 and the protrusion 7 5 suppresses abnormal noise generated by contact.

  Further, by providing the protrusion 75, the strength between the mounting holes h1 of the adjacent insert nuts Nu of the flat surface portion 73 is increased, so that the rigidity around the mounting hole h1 can be increased.

  FIG. 4 shows a modification of the present embodiment. In this modified example, except that the following points are different from the above-described embodiment, it is configured in the same manner as the above-described embodiment. Therefore, the same components are denoted by the same reference numerals and detailed description thereof is omitted. To do. That is, in the above embodiment, the shape of the protrusion 75 is a cross-shaped cross section, but in this modification, the protrusion 79 is formed so as to bulge upward from the flat surface portion 73.

  The protrusion 79 has a substantially rectangular box shape that is longer in the vehicle width direction than in the vehicle longitudinal direction. The length of the projecting portion 79 in the vehicle width direction is substantially the same as the outer diameter of the lower end of the pedestal portion 77, and a recess 79a that opens downward is formed. The upper surface of the protrusion 79 is parallel to the back surface of the outer panel 3 so as not to contact the back surface of the outer panel 3. A gap s5 is formed between the protrusion 79 and the back surface of the outer panel 3. Therefore, in this modified example, similar to the above-described embodiment, the hood hood 1 can be obtained which is light in weight and good in appearance quality, and can be safe and prevent the parts from being scattered even when a large impact is applied.

  In the present embodiment, the sheet molding compound and the glass fiber reinforced polypropylene are used as the material of the outer panel 3 and the inner panel 5, but the present invention is not limited to this.

  In this embodiment, two attachment holes h1 and four fastener engagement holes h4 are provided. However, the number of attachment holes h1 is not limited to this, and an arbitrary number can be provided depending on the required attachment strength.

  The present invention can also be applied to exterior resin panels other than the hood hood 1.

  The present invention is suitable for application to, for example, a hood hood that forms the exterior of an automobile.

1 Bonnet hood (exterior resin panel)
3 Outer panel 5 Inner panel 11 Hinge bracket (attached member)
71 Leg part 73 Plane part 75, 79 Protrusion part
77 base (thick part)
B 1 Fixing bolt (fixing member)
Bd Auto Body
R1 sky between the part
Nu insert nut h1 mounting hole h 2 consistently hole
s 1 and s 5 gaps

Claims (2)

A resin outer panel (3), is constructed out with the outer panel (3) bonded resin inner panel so as to overlap the back side of (5),
Above the inner panel (5), the legs comprising a joint portion between the outer panel (3) and (71), the space between the outer panel (3) back surface leg portion (71) tip ( A continuous flat portion (73) so as to have R1) ,
The planar portion (73), mounting holes for mounting the mounted member (11) (h1) is formed by a mounted member (11) along a said planar portion (73), said member being attached to In the state where the fixing member (B1) is inserted into the through hole (h2) formed in (11) and the mounting hole (h1) and the mounted member (11) is mounted to the inner panel (5) , the fixing member (B1) is a vehicle exterior resin panel in which the tip of the (B1) penetrates the mounting hole (h1) and is positioned in the space (R1) ,
The plane portion (73) has a plurality of thick portions (77) in which insert nuts (Nu) having the mounting holes (h1) are embedded,
Between the adjacent thick portions (77), projections (75 , 79) straddling the adjacent thick portions (77) are integrally projected toward the outer panel (3) side,
The exterior resin panel of an automobile, wherein the tip of the projection (75, 79) is positioned closer to the outer panel (3) than the tip of the fixing member (B1) . The automobile exterior resin panel according to claim 1,
An exterior resin panel for automobiles, wherein gaps (s1, s5) are formed between the protrusions (75, 79) and the back surface of the outer panel (3) .

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