JP5235538B2 - Car hood - Google Patents

Description

  The present invention relates to an automobile hood that opens and closes an engine room.

In this type of hood, a structure in which a sheet metal inner panel is fixed to a resin outer panel with a bolt may be employed from the viewpoint of reducing the weight while ensuring the necessary rigidity (for example, Patent Document 1). reference).
Japanese Utility Model Publication No. 1-95483

  By the way, in the conventional hood, although the outer panel is made of resin, the weight can be reduced. However, since the inner panel is made of sheet metal that covers substantially the entire surface of the outer panel, improvement in further weight reduction is achieved. Is requested.

  The present invention has been made in view of the above-described conventional situation, and an object thereof is to provide an automobile hood capable of further reducing the weight while ensuring necessary rigidity.

The invention of claim 1 is an automobile hood for opening and closing the engine room, comprising a hood outer having an exterior surface, and arranged frame members so as along the outer periphery of the hood outer, scaffold member, the vehicle width Hinge mounting portions provided at both ends in the direction;
A lock attachment portion provided in a middle portion in the vehicle width direction; and a cross portion for connecting the hinge attachment portion and the lock attachment portion, wherein each of the hinge attachment portions and the lock attachment portion is an inner wall of the hood outer It is characterized by being coupled to each other by a fastening member.

  According to a second aspect of the present invention, in the automobile hood according to the first aspect, the skeleton member includes a connecting portion that connects a middle portion of the skeleton member in the vehicle width direction in the vehicle front-rear direction.

  According to the hood of the first aspect of the present invention, the skeleton member is disposed on the hood outer having the exterior surface along the outer peripheral portion of the hood outer, and the skeleton member is provided with the hinge attachment portion and the lock attachment portion, Since the cross part that connects the hinge attachment part and the lock attachment part is provided, the rigidity of the entire hood can be secured with the minimum necessary members, and when the inner panel is arranged on the entire surface of the conventional outer panel In comparison, the overall weight of the hood can be reduced.

  Further, since the skeleton member is coupled to the hood outer by a fastening member, that is, by being fixed with bolts, rivets, screws or the like, it can be easily assembled, and special equipment can be dispensed with. For example, when joining by heat caulking or welding, a large-scale facility is required, resulting in high cost.

  In the invention of claim 2, since the middle part in the vehicle width direction of the skeleton member is connected by the connecting member extending in the vehicle front-rear direction, the rigidity of the entire hood can be further enhanced.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIGS. 1 to 3 are views for explaining a hood of an automobile according to a first embodiment of the present invention, FIG. 1 is a side view of the automobile in which the hood is disposed, and FIG. 2 is an exploded perspective view of the hood. FIG. 3 is a bottom view of the hood.

  In the figure, reference numeral 1 denotes a hood that opens and closes an engine room A of an automobile. The engine room A includes left and right front pillars 2 and 2 extending substantially in the vertical direction, fender members 3 and 3 extending from the left and right front pillars 2 to the front of the vehicle, and the left and right fender members 3. It is formed by the space enclosed by the radiator support member (not shown) arrange | positioned between the front ends of this, and the cowl member 4 arrange | positioned between the rear ends. A windshield 7 is disposed between the left and right front pillars 2 and the cowl member 4.

  The hood 1 is supported by the left and right fender members 3 via hinge members 5 and 5 attached to the left and right rear ends of the hood 1 so as to be rotatable up and down.

  Further, the hood 1 can be locked in the fully closed position by engaging the striker 6 attached to the center front end portion in the vehicle width direction with a hood lock (not shown) disposed on the radiator support member. It has become.

  The hood 1 includes a hood outer 9 having an exterior surface 9 a that is painted to enhance the appearance, and a skeleton member 10 that is disposed along the outer periphery of the hood outer 9.

  The hood outer 9 is made of fiber reinforced plastic using carbon fiber, glass fiber or the like, or synthetic resin, and is integrally formed by a mold.

  The hood outer 9 includes a wide hood main body 9b that covers the upper end opening of the engine room A, and a flange portion 9c that is bent inward from the outer peripheral edge of the hood main body 9b.

  The skeleton member 10 is made of a light metal such as an aluminum alloy and is formed by extrusion.

  The skeleton member 10 includes a rectangular pipe-shaped rear side portion 11 extending in the vehicle width direction along the rear edge portion 9d of the hood outer 9, and the left and right side edge portions 9e, 9e of the hood outer 9 in the front-rear direction. Extending square pipe-shaped left and right hinge mounting portions 12, 12, a generally flat plate-shaped lock mounting portion 13 extending in the vehicle width direction along the front edge 9f of the hood outer 9, and the left and right hinge mounting It has square pipe-shaped left and right cross portions 14, 14 that connect the portion 12 and the lock mounting portion 13.

  The skeleton member 10 has left and right reinforcing portions 20 and 20 each having a square pipe shape for connecting the lock attaching portion 13 and the front flange portion 9c ′ of the hood outer 9 in the vehicle width direction. The left and right reinforcing portions 20 are fixed to the lock mounting portion 13 and the front flange portion 9c ′ by bolts 21, respectively.

  Left and right end portions 11a and 11a of the rear side portion 11 are joined to the left and right hinge mounting portions 12 by welding. The left and right cross portions 14 are formed in a straight line, and are fixed to the hinge mounting portion 12 and the lock mounting portion 13 by bolts 19. Thereby, the skeleton member 10 has a structure in which the rear side portion 11, the hinge attachment portions 12, the lock attachment portion 13, and the cross portions 14 are integrally connected.

  The hinge member 5 is fixed to the left and right hinge mounting portions 12 by bolts 15 and 15, and the striker 6 is fixed to the lock mounting portion 13 by bolts 16 and 16.

  The skeleton member 10 is detachably coupled to the inner wall of the hood outer 9 by a plurality of fastening members 18. The fastening member 18 is made of a bolt / nut, a rivet, a screw or the like. Specifically, the left and right hinge attachment portions 12 and the lock attachment portion 13 are respectively attached to the hood outer 9 by fastening members 18.

  According to the present embodiment, since the aluminum alloy skeleton member 10 is arranged along the outer peripheral portion of the hood outer 9 on the resin hood outer 9, the rigidity of the entire hood is increased with the minimum necessary members. And deformation of the hood outer 9 due to cold heat can be prevented.

  The frame member 9 includes a rear side portion 11 along the rear edge portion 9d of the hood outer 9, the hinge attachment portions 12 and 12 along the left and right side edge portions 9e and 9e, and the lock attachment portion along the front edge portion 9f. 13 and the cross portions 14 and 14 for connecting the left and right hinge mounting portions 12 and the lock mounting portion 13 to each other, the entire hood is compared with the case where the inner panel is disposed on the entire surface of the conventional outer panel. Can be reduced in weight.

  In addition, since the skeleton member 10 is disposed on the outer periphery of the hood outer 9, when the collision object falls from above due to a vehicle collision, the hood outer 9 is elastically deformed to absorb the collision load, The influence can be suppressed. That is, when the entire surface of a conventional outer panel is covered with a sheet metal inner panel, the absorbing function is low because the inner panel directly receives a collision load.

  Since the skeleton member 10 is detachably coupled to the inner wall of the hood outer 9 by each fastening member 18, it can be easily assembled by fixing with bolts, rivets, screws, etc., and no special equipment is required. it can. For example, when joining by heat caulking or welding, a large-scale facility is required, resulting in high cost.

  Further, since the skeleton member 10 is mechanically coupled to the hood outer 9, the skeleton member can be shared by various hood outers having different designs, and can be applied to a derivative vehicle.

  In the above-described embodiment, the skeleton member 10 includes the rear side portion 11, the left and right hinge attachment portions 12 and 12, the lock attachment portion 13, and the left and right cross portions 14 and 14. In the present invention, as shown by a two-dot chain line in FIG. 3, the connecting member 25 having a hat-shaped cross section extends between the rear side portion 11 and the lock mounting portion 13 in the vehicle width direction center portion of the skeleton member 10 in the vehicle longitudinal direction. You may connect by. In such a case, the rigidity of the entire hood can be further increased.

  In the embodiment, the case where the hood outer 9 is made of resin and the skeleton member 10 is made of aluminum alloy has been described as an example. However, the present invention is not limited to this, and the design and required performance of the hood are not limited thereto. It is also possible to combine various materials depending on the situation. For example, aluminum or a steel plate can be used for the hood outer, and a resin or a steel plate can be used for the skeleton member. Furthermore, the frame member can be of various shapes such as a round pipe, as well as a square pipe.

  FIG. 4 is a view for explaining a hood according to a second embodiment of the present invention. In the figure, the same reference numerals as those in FIG. 3 denote the same or corresponding parts.

  The skeleton member 10 of the second embodiment includes a hood outer so as to connect the rear side portion 11, the left and right hinge attachment portions 12 and 12, the lock attachment portion 13, and the left and right hinge attachment portions 12. 9 and a single cloth portion 26 made of an aluminum alloy extending along the front edge portion 9f.

  The cross portion 26 is bent along the front edge portion 9 f of the hood outer 9. Both end portions 26 a of the cross portion 26 are coupled to the hinge attachment portion 12, and the lock attachment portion 13 is attached to the central portion 26 b of the pipe member 26.

  In the said 2nd Embodiment, since the frame | skeleton member 10 was arrange | positioned in the outer peripheral part of the hood outer 9 over the perimeter, the rigidity of a hood can be improved further.

1 is a side view of an automobile provided with a hood according to a first embodiment of the present invention. It is a disassembled perspective view of the said food | hood. It is a bottom view of the hood. It is a bottom view of the hood by a 2nd embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hood 9 Hood outer 9a Exterior surface 10 Frame member 12 Hinge attachment part 13 Lock attachment part 14, 26 Cross part 18 Fastening member 25 Connection part A Engine room

Claims (2)

A car hood that opens and closes an engine room,
A hood outer having an exterior surface;
A skeleton member arranged along the outer periphery of the hood outer,
The skeleton member has hinge mounting portions provided at both ends in the vehicle width direction,
A lock mounting portion provided in the middle of the vehicle width direction;
A cross portion for coupling the hinge mounting portion and the lock mounting portion;
Each of the hinge mounting portions and the lock mounting portion is coupled to an inner wall of the hood outer by a fastening member. The automobile hood according to claim 1,
The skeleton member has a connecting portion for connecting a middle portion in the vehicle width direction of the skeleton member in the vehicle front-rear direction.

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