JP7349799B2 - Vehicle resin door - Google Patents

Description

The present invention relates to a resin door for a vehicle that is excellent in terms of fixing strength of a window frame, weight reduction, and dimensional accuracy.

Conventional vehicle doors have generally been iron doors whose outer and inner panels are made of steel plates. However, in response to the recent demand for lighter vehicles, resin doors have been proposed in which outer panels and inner panels are molded from resin materials instead of steel plates. Furthermore, there are examples in which resin doors have actually been put into practical use for specific types of vehicle doors such as back doors.

Patent Documents 1 and 2 disclose automobile panel structures in which an outer panel material is made of a specific resin material and an inner panel is made of a specific fiber-reinforced resin material. It is also explained that this automotive panel structure is used as a panel structure for side doors, back doors, sliding doors, hoods, roofs, and the like.

Patent Document 3 discloses a reinforcing structure for a resin door in which an outer panel is provided with a groove constituted by ribs, and a reinforcing member is attached to the groove. The drawing also shows a swing door (hinge door) with the reinforcing member attached.

Patent Document 4 discloses a resin door in which an outer panel is provided with a rib and a side impact bar is attached to the rib. The drawing also shows a swing door (hinged door) with the side impact bar attached.

Japanese Patent Application Publication No. 2005-119380 Japanese Patent Application Publication No. 2010-195399 Utility Model Publication No. 62-165121 Utility Model Publication No. 62-95926

Although plastic doors are lightweight, they are usually less strong than steel doors. Therefore, in order to put resin doors into practical use, it is necessary to devise ways to improve their strength.

For example, regarding how to attach a window frame to a sliding door, for iron sliding doors, the outside of the window frame is fixed by wrapping the outer panel, but the inside (glass side) needs the necessary strength (rigidity) even if it is not fixed. ), so it is generally not fixed. On the other hand, since a resin sliding door is inferior in strength to an iron door, the inventors of the present invention thought that it would be undesirable to adopt the same structure as the iron sliding door.

The present invention has been made to solve the above problems. That is, an object of the present invention is to provide a resin door for a vehicle that is excellent in terms of fixing strength of a window frame, weight reduction, and dimensional accuracy.

As a result of intensive studies to achieve the above object, the inventors of the present invention found that it is very effective to fix the peripheral edge of the window frame on the outer panel side and the window frame peripheral edge on the inner panel side with rivets, and the present invention is based on the present invention. The invention was completed. That is, the present invention is specified by the following matters.

[1] A vehicle made of resin, which is equipped with an outer panel and an inner panel, and has a window frame periphery having a substantially closed cross-sectional structure formed by the window frame periphery on the outer panel side and the window frame periphery on the inner panel side. It is a door,
The peripheral edge of the window frame on the outer panel side protrudes toward the inside of the door from a portion bent in a substantially dogleg shape toward the outside of the door in cross-sectional view, and the outer panel side protrusion forms the closed cross-sectional structure. The window frame peripheral portion on the inner panel side protrudes toward the inside of the door from a portion bent in a substantially dogleg shape toward the outside of the door in cross-sectional view, and forms the closed cross-sectional structure. It has a protrusion on the inner panel side that
Among the window frame, a peripheral edge on the vehicle upper side and a peripheral edge on at least one of the front side and the rear side of the vehicle, the window frame peripheral edge on the outer panel side and the window frame peripheral edge on the inner panel side are on the outer panel side. A resin door for a vehicle, characterized in that the protrusion and the inner panel side protrusion are fixed with rivets.

[3] The resin door for a vehicle according to [ 1 ] , which is a sliding door.

According to the present invention, it is possible to provide a resin door for a vehicle that is excellent in terms of fixing strength of the window frame, weight reduction, and dimensional accuracy.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing an embodiment of a resin door for a vehicle (a resin sliding door for a vehicle) of the present invention. FIG. 3 is a cross-sectional view taken along the line AA' of the position of the rivet 31.

FIG. 1 is a diagram showing an embodiment of a vehicle resin door (vehicle resin sliding door) of the present invention. The resin sliding door 1 for a vehicle shown in FIG. 1 includes an outer panel 11 and an inner panel 12, and is slidably connected to a vehicle body (not shown) by two fixing points 11. One of the fixing points 21 is located at a clevis portion on the front side of the vehicle body, and the other one of the fixing points 21 is a portion on the rear side of the vehicle body where the door striker and lock are engaged and fixed.

In FIG. 1, the window frame periphery 11a (not shown in FIG. 1) on the outer panel side around the window 13 of the resin sliding door 1 for a vehicle and the window frame periphery 12a on the inner panel side are used to form the periphery of the window frame. The department is made up of: The window frame peripheral edge 11a on the outer panel side and the window frame peripheral edge 12a on the inner panel side are fixed by rivets 31. These rivets 31 are used at two locations above the window 13 and at three locations each on the left and right sides of the window.

FIG. 2 is a cross-sectional view taken along line AA' of the position of the rivet 31. As shown in FIG. 2, an outer panel protrusion 11b of the window frame peripheral edge 11a on the outer panel side protrudes toward the inside of the door, and a protrusion 11b of the window frame peripheral edge 12a of the inner panel side projects toward the inside of the door. The protruding inner panel protrusion 12b is fixed with a rivet 31. This improves the strength of fixing the window frame. A window glass holding elastic member 32 is provided at the lower part of each window frame peripheral portion 11a and 12a, and the window glass 33 is thereby held.

In the present invention, the type of rivet 31 is not limited, and various rivets known to be usable for fixing resin members and other members can be used.

In the present invention, the fixing position by the rivet 31 is preferably a position as shown in FIG. However, the present invention is not limited to this position, and any position where the fixing strength of the window frame can be improved by fixing the window frame peripheral edge 11a on the outer panel side and the window frame peripheral edge 12a on the inner panel side can be used. good. For example, the rivet 31 may be used at three or more positions on the upper side of the window 13, or may be at one position depending on the case. Furthermore, the rivets 31 may be used at four or more positions on the left and right sides of the window, or may be at two or one position depending on the case. Furthermore, it is also possible to use the rivet 31 only on the upper side of the window 13 and use other fixing means without using the rivet 31 on the left and right sides of the window 13 (or in some cases, no fixing means is used). Yes, and vice versa, use rivets 31 only on the left and right sides of the window 13, and use other fixing means without using rivets 31 on the upper side of the window (or in some cases, do not use any fixing means) is also possible. Furthermore, it is also possible to use the rivet 31 on only one of the left and right sides of the window 13 and use other fixing means without using the rivet 31 on the other side (or in some cases, no fixing means is used). be.

Furthermore, in FIG. 1, a reinforcing member 22 is provided between the two fixing points 21. The shape of the reinforcing member 22 is a band shape extending in the horizontal direction, and both ends of the reinforcing member 22 are fixed at two fixing points 21. The parts (stretched parts) of the reinforcing member 22 other than both ends are not fixed. The cross-sectional shape of the reinforcing member 12 has two recesses. This reinforcing member 22 is a member that suppresses the movement of the sliding door to rotate around the fixed point 21 due to the pressing force from the inner side surface of the sliding door. Providing such a reinforcing member 22 on the sliding door is very effective in improving strength.

As the vehicle resin door of the present invention, a resin sliding door 1 as shown in FIGS. 1 and 2 is preferable, but the present invention is not limited thereto. Since the resin door for a vehicle of the present invention is excellent in terms of fixing strength of a window frame and dimensional accuracy, it is also useful as a resin door other than a resin sliding door, such as a resin swing door (hinge door).

The resin door for a vehicle according to the present invention is advantageous in terms of weight reduction because the main portion thereof is made of resin. In a resin door, a polypropylene compound is preferably used as the material constituting the outer panel 11. The material constituting the inner panel 12 is preferably a sheet molding compound (SMC: a sheet in which fibers are impregnated with resin). Specific examples of resins for sheet molding compounds include unsaturated polyester resins. Specific examples of fibers in the sheet molding compound include glass fibers and carbon fibers.

The resin door for vehicles of the present invention is excellent in terms of fixing strength of the window frame, weight reduction, and dimensional accuracy, so it can be used for resin doors of various vehicles such as automobiles, such as resin sliding doors, resin swing doors It is very useful as a hinged door).

1 Resin sliding door for vehicles)
11 Outer panel 11a Window frame peripheral edge 11b on the outer panel side Outer panel side projection 12 Inner panel 12a Window frame peripheral edge 12b on the inner panel side Inner panel side projection 13 Window 21 Fixing point 22 Reinforcing member 31 Rivet 32 Window glass retention Elastic member 33 for window glass

Claims (2)

A resin door for a vehicle, comprising an outer panel and an inner panel, and a peripheral edge of the window frame having a substantially closed cross-sectional structure formed by a peripheral edge of the window frame on the outer panel side and a peripheral edge of the window frame on the inner panel side. hand,
The peripheral edge of the window frame on the outer panel side protrudes toward the inside of the door from a portion bent in a substantially dogleg shape toward the outside of the door in cross-sectional view, and the outer panel side protrusion forms the closed cross-sectional structure. The window frame peripheral portion on the inner panel side protrudes toward the inside of the door from a portion bent in a substantially dogleg shape toward the outside of the door in cross-sectional view, and forms the closed cross-sectional structure. It has a protrusion on the inner panel side that
Among the window frame, a peripheral edge on the vehicle upper side and a peripheral edge on at least one of the front side and the rear side of the vehicle, the window frame peripheral edge on the outer panel side and the window frame peripheral edge on the inner panel side are on the outer panel side. A resin door for a vehicle, characterized in that the protrusion and the inner panel side protrusion are fixed with rivets. The resin door for a vehicle according to claim 1, which is a sliding door.

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