JP7487760B2 - Vehicle side door - Google Patents

Description

The present invention relates to a vehicle side door.

As a method for increasing the rigidity of vehicle doors, a method of placing reinforcements inside the door has been used in the past. For example, in the vehicle door structure of Patent Document 1, a ratchet reinforcement extends in the vertical direction of the door body and is connected to a window shoulder reinforcement, a panel reinforcement upper that reinforces the outer panel is connected to the window shoulder reinforcement, and the panel reinforcement upper is connected to the ratchet reinforcement. Patent Document 1 claims that the above configuration can efficiently ensure the rigidity of the upper part of the door.

JP 2010-221971 A

According to the configuration of Patent Document 1, it is believed that the rigidity of the door can be increased by three reinforcements: ratchet reinforcement, window shoulder reinforcement, and panel reinforcement upper. However, using multiple reinforcements as in Patent Document 1 poses the problem that the increased number of parts increases costs and vehicle weight.

In view of these problems, the present invention aims to provide a vehicle side door that can ensure sufficient door rigidity with a smaller number of parts and that can suppress increases in costs and vehicle weight.

In order to solve the above problems, a representative configuration of a vehicle side door according to the present invention is a vehicle side door including an outer panel that constitutes an outer surface, and an inner panel that is disposed inside the outer panel and constitutes an inner surface, the vehicle side door further including a hinge reinforcing member that reinforces the hinge of the vehicle side door, a stopper reinforcing member that reinforces a door opening/closing stopper of the vehicle side door, a latch reinforcing member that reinforces an area where the latch of the vehicle side door is attached, and a reinforcement extending in the front-rear direction of the vehicle to reinforce the vehicle side door, the inner panel further including a window opening, a panel surface located below the window opening, a front wall that rises from the front edge of the panel surface toward the outside of the vehicle, and a rear wall that rises from the rear edge of the panel surface toward the outside of the vehicle. The hinge reinforcement member or stopper reinforcement member is joined to the front wall so as to span from the front wall to the panel surface, and the latch reinforcement member is joined to the rear wall so as to span from the rear wall to the panel surface. The front end of the reinforcement member is joined to the front wall and the outer panel at a position below the point where the door handle is fixed to the outer panel and at a position that vertically overlaps with the area of the hinge reinforcement member or stopper reinforcement member that is joined from the front wall to the panel surface, and the rear end of the reinforcement member is joined to the rear wall and the outer panel at a position above the point where the door handle is fixed to the outer panel and at a position that vertically overlaps with the area of the latch reinforcement member that is joined from the rear wall to the panel surface.

The present invention provides a vehicle side door that can ensure sufficient door rigidity with a smaller number of parts and can suppress increases in cost and vehicle weight.

1 is a diagram showing an embodiment of a vehicle side door of the present invention; FIG. 1B is an enlarged view of FIG. FIG. 2( b ) is an enlarged view of FIG. 2(b) is a cross-sectional view taken along line AA of FIG. FIG. 2 is an enlarged view of the vicinity of a door handle fixing portion in FIG. 1 .

A vehicle side door according to an embodiment of the present invention includes an outer panel that constitutes an outer surface, and an inner panel that is disposed inside the outer panel and constitutes an inner surface, and further includes a hinge reinforcing member that reinforces a hinge of the vehicle side door, a stopper reinforcing member that reinforces a door opening/closing stopper of the vehicle side door, a latch reinforcing member that reinforces an area where a latch of the vehicle side door is attached, and a reinforcement extending in the front-rear direction of the vehicle to reinforce the vehicle side door, and the inner panel has a window opening, a panel surface located below the window opening, a front wall that rises from the front edge of the panel surface toward the outside of the vehicle, and a rear wall that rises from the rear edge of the panel surface toward the outside of the vehicle, The hinge reinforcement member or the stopper reinforcement member is joined to the front wall and the panel surface so as to span from the front wall, and the latch reinforcement member is joined to the rear wall and the panel surface so as to span from the rear wall, the front end of the reinforcement is joined to the front wall and the outer panel at a position below the point where the door handle is fixed to the outer panel and at a position that vertically overlaps with the area of the hinge reinforcement member or the stopper reinforcement member that is joined from the front wall to the panel surface, and the rear end of the reinforcement is joined to the rear wall and the outer panel at a position above the point where the door handle is fixed to the outer panel and at a position that vertically overlaps with the area of the latch reinforcement member that is joined from the rear wall to the panel surface.

According to the above configuration, in the inner panel, the hinge reinforcement member or the stopper reinforcement member is joined to the front wall, and the latch reinforcement member is joined to the rear wall. This improves the rigidity of the front and rear walls of the inner panel against loads in the vehicle width direction and the front-rear direction. Then, by joining the reinforcement to the area where these joints are made, when the reinforcement receives a load, the load can be supported by the highly rigid front and rear walls, making it possible to effectively suppress stickiness in the outer panel.

In addition, by positioning the front end of the reinforcement below the point where the door handle is fixed and the rear end of the reinforcement above the point where the door handle is fixed, the reinforcement is diagonally hung inside the vehicle side door. This makes it possible to efficiently reinforce the entire door, and in particular to suppress the occurrence of a torsional deformation mode that occurs when a load is applied in the vertical direction. Therefore, with the above configuration, it is possible to ensure sufficient rigidity of the door with a smaller number of parts, and it is possible to suppress increases in costs and vehicle weight.

The outer panel has a reinforcing shape portion that extends in the vehicle front-rear direction, and the reinforcement has a first portion that overlaps with the reinforcing shape portion in a side view and is connected to the reinforcing shape portion. With this configuration, by forming a reinforcing shape portion in the outer panel, it is possible to more effectively suppress stickiness of the outer panel. And, by connecting the reinforcement to the reinforcing shape portion in the first portion that overlaps in a side view, it is possible to further increase rigidity against loads in the vehicle width direction.

The reinforcement has a second portion that overlaps in the vehicle front-rear direction with the location where the door handle is fixed to the outer panel, and an upward curved portion that curves upward from the lower edge of the second portion, the upward curved portion inclines downward as it approaches the front of the vehicle and reaches below the location where the door handle is fixed, and the upward curved portion is connected to the location at a position that overlaps with the location where the door handle is fixed in a side view.

By forming the upward curved portion as in the above configuration, the load from the vehicle width direction can be supported by the upward curved portion. Furthermore, by connecting the upward curved portion and the part where the door handle is fixed at a position where they overlap in a side view, the upward curved portion can receive the load in the vehicle width direction and forward direction applied from the door handle when the door is opened and closed. Therefore, deformation of the outer panel at the part where the door handle is fixed can be suitably suppressed. In addition, the part of the outer panel where the door handle is fixed has a concave shape, so it has high rigidity. Therefore, by connecting the part where the door handle is fixed to the reinforcement, the rigidity of the reinforcement against loads in the vehicle width direction can be improved.

The reinforcement has a second portion that overlaps in the vehicle front-rear direction with the location where the door handle is fixed to the outer panel, and a downward curved portion that curves downward from the lower edge of the second portion, and the downward curved portion is connected to the location where the door handle is fixed at a position where it overlaps in a side view. With this configuration, the curved portion and the location where the door handle is fixed are connected at a position where they overlap in a side view, and the same effect as above can be obtained. Note that if the connection between the curved portion and the location where the door handle is fixed is fastened or joined, a fixed point exists between the front wall and the rear wall, making it possible to more effectively suppress the torsional mode when a load is input in the vertical direction.

Below, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings. The dimensions, materials, and other specific values shown in the embodiment are merely examples to facilitate understanding of the invention, and do not limit the present invention unless otherwise specified. In this specification and drawings, elements having substantially the same functions and configurations are given the same reference numerals to avoid duplicated explanations, and elements not directly related to the present invention are not illustrated.

Figure 1 is a diagram showing an embodiment of a vehicle side door (hereinafter referred to as side door 100) of the present invention. Figure 1(a) is a diagram showing the side door 100 observed from the outside of the vehicle, and Figure 1(b) is a diagram showing the side door 100 of Figure 1(a) with the outer panel 110 removed. As shown in Figures 1(a) and (b), the side door 100 of this embodiment has an outer surface formed by the outer panel 110 and an inner surface formed by an inner panel 120 arranged inside the outer panel 110.

As shown in FIG. 1(a), a door handle 112 for opening and closing the side door 100 is attached. The door handle 112 is exposed from the outer panel 110, which is provided with a door handle fixing portion 114 (shown by a dashed line) where the door handle 112 is fixed. The door handle fixing portion 114 has a concave shape formed by recessing the outer panel 110 toward the inside of the vehicle, and therefore has high rigidity.

Figure 2 is an enlarged view of Figure 1(b). Figure 2(a) is an enlarged view of the vicinity of the reinforcement 140 in Figure 1(b), and Figure 2(b) is an enlarged view in which the inner panel 120 in Figure 2(a) is not shown and the outer panel 110 is virtually shown by a two-dot chain line. As shown in Figures 2(a) and (b), a hinge reinforcement member 132, a stopper reinforcement member 134, a latch reinforcement member 136, and a reinforcement 140 are provided inside the side door 100.

The hinge reinforcement member 132 is a member that reinforces the hinge (not shown) of the side door 100. The stopper reinforcement member 134 is a member that reinforces the door opening/closing stopper (not shown) of the side door 100. The latch reinforcement member 136 is a member that reinforces the area where the latch (not shown) of the side door 100 is attached. The reinforcement member 140 is a member that extends in the front-rear direction of the vehicle and reinforces the side door 100.

As shown in FIG. 2(a), the inner panel 120 has a panel surface 122 located below the window opening 100a. A front wall 124 rises from the front edge of the panel surface 122 toward the outside of the vehicle, and a rear wall 126 rises from the rear edge of the panel surface 122 toward the outside of the vehicle.

Figure 3 is an enlarged view of Figure 2(a). Figure 3(a) is an enlarged view of the vicinity of the front end 140a of the reinforcement 140 in Figure 2(a), and Figure 3(b) is an enlarged view of the vicinity of the rear end 140b of the reinforcement 140 in Figure 2(a). Note that, for ease of understanding, the reinforcement 140 is virtually shown by a two-dot chain line in Figures 3(a) and (b).

As shown in Figures 2(a) and 3(a), the hinge reinforcement member 132 and the stopper reinforcement member 134 are joined to the front wall 124 and the panel surface 122 so as to span between them. As shown in Figures 2(a) and 3(b), the latch reinforcement member 136 is joined to the rear wall 126 and the panel surface 122 so as to span between them. This makes it possible to increase the rigidity of the front wall 124 and the rear wall 126 of the inner panel 120 against loads in the vehicle width direction and the front-rear direction.

The side door 100 of this embodiment is characterized in that the front end 140a of the reinforcement 140 is located below the door handle fixing portion 114 as shown in FIG. 2(b). The front end 140a of the reinforcement 140 is joined to the front wall 124 and the outer panel 110 at a position overlapping with the region 141a where the hinge reinforcement member 132 and the stopper reinforcement member 134 are joined in the vertical direction as shown in FIG. 3(a). On the other hand, the rear end 140b of the reinforcement 140 is joined to the rear wall 126 and the outer panel 110 at a position above the door handle fixing portion 114 as shown in FIG. 2(b) and overlapping with the region 141b where the latch reinforcement member 136 is joined in the vertical direction as shown in FIG. 3(b).

According to the above configuration, the reinforcement 140 is joined to an area having high rigidity by the hinge reinforcement member 132, the stopper reinforcement member 134, and the latch reinforcement member 136. As a result, when the reinforcement 140 receives a load, the load can be supported by the highly rigid front wall 124 and rear wall 126, making it possible to effectively suppress stickiness in the outer panel 110.

As described above, in the side door 100, the front end 140a of the reinforcement 140 is located below the door handle fixing portion 114, and the rear end 140b of the reinforcement 140 is located above the door handle fixing portion 114. As a result, the reinforcement 140 is hung diagonally inside the side door 100, so that the entire door can be reinforced efficiently. Therefore, the occurrence of a torsional deformation mode that occurs especially when a load is applied in the vertical direction can be suppressed. Therefore, with the above configuration, it is possible to ensure sufficient rigidity of the door with a smaller number of parts, and it is possible to suppress increases in costs and vehicle weight.

Although not shown, when connecting the reinforcement 140 and the inner panel 120, it is advisable to connect the reinforcement 140 so that it is aligned with the vehicle front-to-rear direction of the inner panel 120. This allows the force acting on the connection points of the front end 140a and rear end 140b of the reinforcement 140 to be a shear load (front-to-rear direction) when the center of the reinforcement 140 is deflected under load. This makes it possible to increase the strength of the connection.

Furthermore, in this embodiment, as shown in Figures 2(a) and (b), a bead shape 142 is formed. The width of this bead shape 142 narrows from the center toward the front end and rear end. This allows the reinforcement 140 to be structured such that the rigidity increases toward the front end 140a and rear end 140b. In addition, since the central portion of the reinforcement 140 has a large area, it is possible to ensure a wide surface area that supports the outer panel 110.

In this embodiment, a configuration in which both the hinge reinforcement member 132 and the stopper reinforcement member 134 are hung from the front wall 124 to the panel surface 122 has been exemplified, but this is not limiting. In other words, even if either the hinge reinforcement member 132 or the stopper reinforcement member 134 is hung from the front wall 124 to the panel surface 122, the above-mentioned effects can be obtained.

Figure 4 is a cross-sectional view taken along line A-A in Figure 2(b). As shown in Figures 2(b) and 4, the outer panel 110 has a reinforcing shape portion 116 extending in the vehicle longitudinal direction. This makes it possible to more effectively suppress stickiness of the outer panel 110. As shown in Figure 2(b), in this embodiment, the reinforcement 140 has a first portion 147 (shown by hatching) that overlaps with the reinforcing shape portion 116 in a side view of the vehicle. Then, as shown in Figure 4, the reinforcing shape portion 116 and the reinforcement 140 are connected at the first portion. This makes it possible to further increase the rigidity against loads in the vehicle width direction in the vicinity of the connected area.

Figure 5 is an enlarged view of the vicinity of the door handle fixing portion 114 in Figure 1. Figure 5(a) is a view showing a first example of the vicinity of the door handle fixing portion 114 of the side door 100, and Figure 5(b) is a view showing a second example of the vicinity of the door handle fixing portion 114 of the side door 100. For convenience of illustration, only the door handle fixing portion 114 of the outer panel 110 is virtually illustrated by a dashed line.

In the example shown in FIG. 5(a), the reinforcement 140 has an upward curved portion 144 in which the lower edge of a second portion 148 (shown by hatching) that overlaps with the door handle fixing portion 114 in the vehicle front-rear direction in a side view curves upward. This allows the upward curved portion 144 to support the load from the vehicle width direction. The upward curved portion 144 is also inclined downward from the door handle fixing portion 114 as it moves toward the front of the vehicle. This allows the width of the reinforcement 140 to be expanded as it moves toward the front of the vehicle, making it possible to provide good support for the outer panel 110.

Furthermore, in this embodiment, the upward curved portion 144 and the door handle fixing portion 114 are connected at a second portion (shown with hatching). This allows the upward curved portion 144 to receive the load in the vehicle width direction and forward direction applied from the door handle 112 when the side door 100 is opened or closed, making it possible to suitably suppress deformation of the outer panel 110 at the door handle fixing portion 114. In addition, since the door handle fixing portion 114 in the outer panel 110 has high rigidity, by connecting the reinforcement 140 there, the rigidity of the reinforcement 140 against loads in the vehicle width direction can be improved.

In the example shown in FIG. 5(b), the reinforcement 140 has a downward curved portion 146 in which the lower edge of a second portion 148 that overlaps with the door handle fixing portion 114 in the vehicle front-rear direction in a side view is curved downward. The downward curved portion 146 and the door handle fixing portion 114 are connected by the second portion 148. With this configuration, the same effect as the example shown in FIG. 5(a) can be obtained.

As shown in FIG. 5(b), the lower edge of the reinforcement 140 curves downward, i.e., bulges toward the door handle fixing portion 114, and thus the area where the reinforcement 140 and the door handle fixing portion 114 overlap is increased. This increases the strength when connected. If the connection between the upper curved portion 144 and the lower curved portion 146 and the door handle fixing portion 114 is fastened or joined, a fixed point exists between the front wall 124 and the rear wall 126, making it possible to more effectively suppress the torsional mode when a load is input in the vertical direction.

Although the preferred embodiment of the present invention has been described above with reference to the attached drawings, it goes without saying that the present invention is not limited to the examples described. It is clear that a person skilled in the art can come up with various modified or revised examples within the scope of the claims, and it is understood that these also naturally fall within the technical scope of the present invention.

This invention can be used in vehicle side doors.

100...side door, 100a...window opening, 110...outer panel, 112...door handle, 114...door handle fixing portion, 116...reinforcement shape portion, 120...inner panel, 122...panel surface, 124...front wall, 126...rear wall, 132...hinge reinforcement member, 134...stopper reinforcement member, 136...latch reinforcement member, 140...reinforcement, 140a...front end, 140b...rear end, 141a, 141b...area, 142...bead shape, 144...upper curved portion, 146...downward curved portion, 147...first portion, 148...second portion

Claims (4)

A vehicle side door including an outer panel forming an outer surface and an inner panel arranged inside the outer panel forming an inner surface,
A hinge reinforcing member that reinforces a hinge of the vehicle side door;
A stopper reinforcing member that reinforces a door opening/closing stopper of the vehicle side door;
A latch reinforcing member that reinforces an area where a latch of the vehicle side door is attached;
Further including a reinforcement extending in the vehicle front-rear direction to reinforce the vehicle side door,
The front end of the reinforcement is joined to the outer panel at a position below a position where a door handle is fixed to the outer panel and overlaps in the up-down direction with a region of the hinge reinforcement member or the stopper reinforcement member that is joined to the inner panel,
The rear end of the reinforcement is joined to the outer panel at a position above a portion where a door handle is fixed to the outer panel and overlaps in the up-down direction with a region of the latch reinforcement member that is joined to the inner panel,
The outer panel has a reinforcing shape portion extending in a vehicle front-rear direction,
The reinforcement has a first portion that overlaps with the reinforcing shape portion in a side view and is connected to the reinforcing shape portion,
the inner panel has a window opening, a panel surface located below the window opening, a front wall rising from a front edge of the panel surface toward the outside of the vehicle, and a rear wall rising from a rear edge of the panel surface toward the outside of the vehicle,
the hinge reinforcing member or the stopper reinforcing member is joined to the front wall and the panel surface so as to span the front wall and the panel surface,
The vehicle side door , wherein the latch reinforcement member is joined to the rear wall and the panel surface so as to span from the rear wall to the panel surface . The reinforcement has a second portion that overlaps with a portion where a door handle is fixed to the outer panel in the vehicle front-rear direction, and an upward curved portion that curves upward from a lower edge of the second portion,
The upper curved portion is inclined downward toward the front of the vehicle and reaches a position below a position where the door handle is fixed,
2. The vehicle side door according to claim 1, wherein the upward curved portion is connected to a location where the door handle is fixed at a position that overlaps with the location in a side view. The reinforcement has a second portion that overlaps with a portion where a door handle is fixed to the outer panel in the vehicle front-rear direction, and a downward curved portion that curves downward from a lower edge of the second portion,
2. The vehicle side door according to claim 1, wherein the downward curved portion is connected to a location where the door handle is fixed at a position that overlaps with the location in a side view. A vehicle side door including an outer panel forming an outer surface and an inner panel arranged inside the outer panel forming an inner surface,
A hinge reinforcing member that reinforces a hinge of the vehicle side door;
A stopper reinforcing member that reinforces a door opening/closing stopper of the vehicle side door;
A latch reinforcing member that reinforces an area where a latch of the vehicle side door is attached;
Further including a reinforcement extending in the vehicle front-rear direction to reinforce the vehicle side door,
The front end of the reinforcement is joined to the outer panel at a position lower than a position where a door handle is fixed to the outer panel,
The rear end of the reinforcement is joined to the outer panel at a position above a position where a door handle is fixed to the outer panel,
The outer panel has a reinforcing shape portion extending in a vehicle front-rear direction,
The reinforcement has a first portion that overlaps with the reinforcing shape portion in a side view and is connected to the reinforcing shape portion,
the inner panel has a window opening, a panel surface located below the window opening, a front wall rising from a front edge of the panel surface toward the outside of the vehicle, and a rear wall rising from a rear edge of the panel surface toward the outside of the vehicle,
the hinge reinforcing member or the stopper reinforcing member is joined to the front wall and the panel surface so as to span the front wall and the panel surface,
The vehicle side door , wherein the latch reinforcement member is joined to the rear wall and the panel surface so as to span from the rear wall to the panel surface .

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