Door structure

Abstract

The present invention provides a door structure that can reduce the weight of the door and improve the door strength compared to the past. The door structure (1) of the present invention has an outer panel (8) and an inner panel (7), characterized in that the outer panel member (10) of the inner panel (7) has: a front longitudinal edge (19) extending longitudinally at the front end of the outer panel member (10); a rear longitudinal edge (20) extending longitudinally at the rear end of the outer panel member (10); a lower edge (21) connecting the lower end of the front longitudinal edge (19) to the lower end of the rear longitudinal edge (20); connecting members (23a, 23b) connecting the front longitudinal edge (19) and the rear longitudinal edge (20) in the front-rear direction; and reinforcing members (25a, 25b) separately joined to the connecting members (23a, 23b) in such a way that they extend along the connecting members in the front-rear direction, forming a closed section between them.

Description

Technical Field

[0001] This invention relates to vehicle door construction. Background Technology

[0002] Conventionally, as a door structure, it is known that a panel-like reinforcing member is disposed between a generally flat metal panel disposed on the exterior of the vehicle body and a generally U-shaped metal panel disposed on the interior of the vehicle body (see, for example, Patent Document 1).

[0003] The door's design allows for thinner inner and outer metal panels, resulting in a lighter door.

[0004] Prior art literature

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2007-508186 Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] However, existing door designs (for example, see Patent Document 1) involve panelizing the reinforcing components, which can lead to deformation of the reinforcing components themselves due to input loads during a vehicle collision. Therefore, existing door designs cannot adequately improve door strength.

[0009] Therefore, the objective of this invention is to provide a door structure that achieves reduced door weight and superior door strength compared to conventional designs.

[0010] Methods for solving problems

[0011] The door structure that solves the aforementioned problem is a door structure having an outer panel and an inner panel, characterized in that the inner panel is composed of an inner panel member disposed inside the vehicle interior and an outer panel member disposed outside the vehicle interior. The outer panel member has: a front longitudinal edge extending longitudinally at the front end of the outer panel member; a rear longitudinal edge extending longitudinally at the rear end of the outer panel member; a lower edge connecting the lower end of the front longitudinal edge to the lower end of the rear longitudinal edge; a connecting member connecting the front longitudinal edge and the rear longitudinal edge in a front-rear direction; and a reinforcing member separately joined to the connecting member in a manner extending along the connecting member in a front-rear direction, forming a closed section between the member and the connecting member.

[0012] Invention Effects

[0013] According to the present invention, a door structure that achieves reduced door weight and superior door strength compared to the past can be provided. Attached Figure Description

[0014] Figure 1 This is a perspective view of a vehicle door using the door structure according to an embodiment of the present invention.

[0015] Figure 2 This is an exploded perspective view of a vehicle door using the door structure of an embodiment of the present invention.

[0016] Figure 3 This is a partially enlarged perspective view showing the angle formed by the connecting component constituting the door structure and the front longitudinal edge, viewed from the inside downward direction in the vehicle width direction.

[0017] Figure 4 yes Figure 1 Sectional view IV-IV.

[0018] Figure 5A This is a right-side view of the outer panel component in the modified door structure.

[0019] Figure 5B This is a left-side view of the outer panel component in the modified door structure.

[0020] Explanation of reference numerals in the attached figures

[0021] 1. Door Structure

[0022] 7. Inner Panel

[0023] 8. Outer Panel

[0024] 9. Panel internal components

[0025] 10. External components of the panel

[0026] 16. Adhesive sealant (bonding material)

[0027] 17. Rolled edge joint

[0028] 18 Hinge Mounting Section

[0029] 19. Front longitudinal edge

[0030] 20 Rear longitudinal edge

[0031] 21. Lower part

[0032] 23 Connecting components

[0033] 23a First connecting component

[0034] 23b Second connecting component

[0035] 25 Reinforced Components

[0036] 25a First Reinforcing Component

[0037] 25b Second Reinforcement Component

[0038] 26. Protruding wall Detailed Implementation

[0039] Next, the door structure of the method of implementing the present invention (this embodiment) will be described in detail.

[0040] Figure 1 This is a perspective view of the left-side side door 2 of a vehicle using the door structure 1 of this embodiment. Figure 2 yes Figure 1 An exploded perspective view of side door 2. It should be noted that, for ease of drafting, Figure 1 The side door 2 shown omits the outer panel 8 (see reference). Figure 2 Additionally, in Figure 2 In the middle, the outer panel 8 is represented by an imaginary line (double-dotted line).

[0041] In this embodiment, the directions of front, back, up, down, left, and right are consistent with the directions of the vehicle.

[0042] The following description only covers the door structure 1 used in the left-side side door 2 of the vehicle, omitting the description of the door structure 1 used in the right-side side door 2, which is symmetrical to the vehicle body's central axis.

[0043] Although the illustrations are omitted, the door structure 1 of this embodiment is applied. Figure 1 The side door 2 shown is mounted on the side of the vehicle body by means of a hinge to allow the opening and closing of the side opening of the vehicle.

[0044] like Figure 2 As shown, the side door 2 has an inner panel 7 and an outer side disposed on the inner panel 7 in the vehicle width direction. Figure 2 The outer panel 8 (also called the door skin) is located on the left side. Furthermore, in this embodiment, the outer panel 8 and the inner panel 7 are arranged at a predetermined interval. Thus, a hollow portion is formed between the outer panel 8 and the inner panel 7.

[0045] like Figure 2 As shown, the inner panel 7 is divided into sections located on the interior side of the vehicle ( Figure 2 The inner panel 9 on the right side and the outer panel on the outside of the vehicle ( Figure 2 It is formed by the outer panel component 10 on the left side.

[0046] When viewed from the side of the side door 2, the inner panel member 9 is narrower in both the front-to-back and vertical directions compared to the outer panel member 10.

[0047] The panel inner component 9 has a speaker mounting hole 15 and two working holes 14 that allow access to the hollow part of the door.

[0048] It should be noted that the panel inner component 9 in this embodiment can be obtained using a conventional stamping method for steel plates.

[0049] The panel outer member 10 includes: a front longitudinal edge 19 extending longitudinally (vertically) on the front side of the side door 2 for mounting a hinge (not shown); a rear longitudinal edge 20 extending longitudinally (vertically) on the rear side of the side door 2 alongside the front longitudinal edge 19; and a lower edge 21 extending longitudinally in the front-rear direction to connect the lower ends of the front longitudinal edge 19 and the rear longitudinal edge 20 to each other.

[0050] It should be noted that the outer panel component 10 in this embodiment is envisioned to be composed of a steel plate frame, which is manufactured in such a way that the front longitudinal edge 19, the rear longitudinal edge 20 and the lower edge 21 are integrally formed by hot pressing.

[0051] like Figure 1 As shown, the front longitudinal edge 19 has an outward ( ) in the vehicle width direction Figure 1 The left side of the rear longitudinal edge 20 has a protruding wall 26. Additionally, the rear longitudinal edge 20 has a side extending outward in the vehicle width direction. Figure 1 The left side) protruding wall 27. These protruding walls 26 and 27 have wall surfaces 26a and 27a that are opposite each other in the front-rear direction. These wall surfaces 26a and 27a become the reinforcing members 25a and 25b described later (see reference). Figure 2 The mounting surfaces at both ends of the ).

[0052] like Figure 2 As shown, the outer panel member 10 has a first connecting member 23a and a second connecting member 23b.

[0053] The first connecting component 23a connects the upper ends of the front longitudinal side 19 and the rear longitudinal side 20 to each other by welding. The second connecting component 23b connects the center of the front longitudinal side 19 and the rear longitudinal side 20 to each other by welding.

[0054] The aforementioned connecting parts 23a and 23b are equivalent to the "connecting parts" in the technical solution, connecting the front longitudinal side 19 and the rear longitudinal side 20 in the front-rear direction. It should be noted that in the following description, unless otherwise specified, the connecting parts 23a and 23b may be simply referred to as connecting part 23.

[0055] Figure 3 yes Figure 2 A magnified 3D view of a portion of arrow III. Figure 3 This is a partially enlarged perspective view showing the angle formed by the connecting member 23a and the front longitudinal edge 19 when viewed from the lower right side (lower inside in the vehicle width direction).

[0056] like Figure 3As shown, the front end of the first connecting member 23a is on the inner side in the vehicle width direction ( Figure 3 The right side of the slope has an inclined surface 28.

[0057] The inclined surface 28 moves away from the central side of the first connecting member 23a toward the forward longitudinal edge 19 and is in contact with the outer panel 8 (see reference). Figure 2 The sides gradually separate and tilt. As a result, the closed cross section formed by the first connecting member 23a and the first reinforcing member 25a (described later) increases as it approaches the front longitudinal edge 19.

[0058] Furthermore, although the illustration is omitted, an inclined surface is also formed on the rear longitudinal edge 20 side of the first connecting member 23a, where the closed cross-section increases as it approaches the rear longitudinal edge 20. Additionally, although the illustration is omitted, both ends of the second connecting member 23b also have inclined surfaces that increase in cross-section as they approach the front longitudinal edge 19 or the rear longitudinal edge 20, connecting with the second reinforcing member 25b (described later, see reference 25b). Figure 2 The inclined surface with an increased closed cross section is formed.

[0059] Figure 4 yes Figure 1 Sectional view IV-IV. Figure 4 In the figure, reference numeral 31 represents the car window glass, indicated by an imaginary line.

[0060] like Figure 4 As shown, the upper edge of the first connecting member 23a constituting the outer panel member 10 forms the upper edge of the inner panel member 9, which is arranged at a predetermined interval from the outer panel member 10, and forms the lower edge of the window opening (not shown). The window glass 31, which is arranged in a manner that allows it to slide in the vertical direction, can be housed in the hollow part 34 of the door through the gap between the upper edge of the first connecting member 23a and the upper edge of the inner panel member 9.

[0061] The upper edge of such a first connecting member 23a is joined to the outer panel 8 by a bend-edge process that bends the upper edge of the outer panel 8 (bend-edge joining).

[0062] like Figure 2 As shown, the second connecting component 23b extends in parallel with the first connecting component 23a in the front-rear direction.

[0063] In this embodiment, the second connecting member 23b is positioned towards the lower edge 21 compared to the center of the vertical width of the outer panel member 10.

[0064] Specifically, such as Figure 2 As shown, the second connecting member 23b is configured such that the front end of the second connecting member 23b is connected to the hinge mounting portion 18 formed on the front longitudinal edge portion 19.

[0065] The aforementioned panel outer component 10 (refer to) Figure 2 ) At appropriate locations, connect to the panel internal components 9 (refer to) by spot welding or other means. Figure 2 The inner panel 7 is formed by joining together (see reference). Figure 2 ).

[0066] Next, the reinforcement component 25 will be explained (refer to...). Figure 2 ).

[0067] like Figure 2 As shown, the reinforcing member 25 is composed of a first reinforcing member 25a corresponding to the first connecting member 23a and a second reinforcing member 25b corresponding to the second connecting member 23b.

[0068] It should be noted that in the following description, without specifically distinguishing between the aforementioned reinforcing components 25a and 25b, they may also be referred to simply as reinforcing component 25.

[0069] like Figure 1 As shown, the reinforcing members 25a and 25b are long-length members that are separate from the connecting members 23a and 23b that extend along the connecting members 23a and 23b in the front-rear direction, respectively.

[0070] like Figure 2 As shown, the aforementioned reinforcing components 25a and 25b extend from the outer side in the vehicle width direction (refer to...). Figure 2 (The left side) is respectively engaged with connecting parts 23a and 23b.

[0071] As Figure 1 IV-IV sectional view Figure 4 As shown, the first reinforcing member 25a is formed from a curved plate. Figure 4 When viewed in a cross section intersecting the longitudinal direction, the first reinforcing member 25a is hat-shaped. The first reinforcing member 25a includes a main body portion 25a1 corresponding to the dome of the hat shape and a flange portion 25a2 corresponding to the brim of the hat shape.

[0072] like Figure 4 As shown, the main body 25a1 of the first reinforcing member 25a has a generally triangular shape with a bevel along the inner surface of the outer panel 8, which serves as the door skin. It should be noted that this shape is for ease of drawing. Figure 4 The gap between the beveled edge of the main body 25a1 and the outer panel 8 is exaggerated in the drawing. In reality, the beveled edge of the main body 25a1 and the outer panel 8 are close to each other through the adhesive sealant 16 (adhesive material).

[0073] The pair of flanges 25a2 of the first reinforcing member 25a extend outward along the vehicle width direction of the first connecting member 23a (see reference). Figure 4 The flange portions 25a2 are formed in a manner that resembles the left side of the flange. This pair of flange portions 25a2 are joined to the first connecting member 23a by spot welding or the like.

[0074] Specifically, the first reinforcing member 25a is mounted below the rolled edge joint 17 of the first connecting member 23a.

[0075] Thus, the first reinforcing member 25a forms a closed cross section of approximately triangular shape between itself and the first connecting member 23a.

[0076] like Figure 1 As shown, the two ends of the first reinforcing member 25a are arranged opposite to the wall surfaces 26a and 27a of the protruding walls 26 and 27, respectively.

[0077] As previously described, the two ends of the first reinforcing member 25a are respectively joined to the wall surfaces 26a and 27a of the protruding walls 26 and 27. Specifically, the flange portions 25a3 formed at the two ends of the first reinforcing member 25a are spot-welded to the wall surfaces 26a and 27a. It should be noted that in Figure 1 In this drawing, for ease of reference, only the front flange 25a3 of the first reinforcing member 25a is drawn, while the rear flange 25a3 is omitted.

[0078] Furthermore, although the illustration is omitted, when observing a cross-section intersecting the longitudinal direction, Figure 1 The second reinforcing member 25b shown is also cap-shaped. The second reinforcing member 25b is joined to... Figure 1 The second connecting member 23b shown forms a closed cross section with the first reinforcing member 25a. The two ends of the second reinforcing member 25b are respectively engaged with the wall surfaces 26a and 27a of the protruding walls 26 and 27 by means of flanges 25b3.

[0079] <Effects>

[0080] Next, the effects of the door structure 1 in this embodiment will be explained.

[0081] In this embodiment, the outer panel member 10 of the door structure 1 is formed by a frame, wherein the frame is composed of a front longitudinal side 19, a rear longitudinal side 20, a lower side 21 and a connecting member 23.

[0082] The panel outer member 10 of the door structure 1 in this embodiment differs from the panel-based structure of existing door structures (for example, see Patent Document 1) and is composed of a frame. The door structure 1 makes the side door 2 lighter than before.

[0083] In addition, the door structure 1 of this embodiment has a reinforcing member 25, which forms a closed cross section between itself and the connecting member 23.

[0084] This door structure 1 can improve the overall strength of the side door 2.

[0085] Furthermore, in this door structure 1, the reinforcing member 25 engages with the connecting member 23 from the outside in the vehicle width direction. Also, the two ends of each reinforcing member 25 are arranged opposite to the protruding walls 26 and 27.

[0086] The door structure 1 can form a closed section in the longitudinal direction of the connecting member 23 by means of the reinforcing member 25. According to such a door structure 1, the bending deformation of the connecting member 23 caused by the input load during a side collision is effectively suppressed.

[0087] In addition, in this door structure 1, the inner side of the connecting member 23 in the vehicle width direction is inclined in such a way that it gradually separates from the outer panel 8 side as it moves away from the central side of the connecting member 23.

[0088] With this door structure 1, it is possible to ensure a large area of ​​the closed cross-section formed by the reinforcing member 25 extending linearly outward in the vehicle width direction of the connecting member 23 and the connecting member 23 at the end. As a result, the rigidity of the end of the connecting member 23 is improved.

[0089] According to this door structure 1, the side door 2 can be prevented from intruding into the interior of the vehicle during a side collision.

[0090] Furthermore, with this door structure 1, the shape of the outer panel 8 side of the reinforcing member 23 can remain unchanged, so it will not affect the appearance of the outer panel 8.

[0091] Furthermore, according to this door structure 1, since the inclination is only provided on the reinforcing member 23, the reinforcing structure will not hinder the stamping process when forming the outer panel 8.

[0092] Furthermore, the outer panel 8, which has a simple reinforcing structure formed by such an inclination, can be produced not only by conventional stamping but also by hot pressing.

[0093] In addition, the end of the connecting member 23b in the door structure 1 is connected to the hinge mounting portion 18 formed on the front longitudinal edge 19.

[0094] In this door structure 1, stress is generated in the hinge mounting portion 18 due to the input load from the front during a frontal collision. However, the door structure 1 suppresses stress concentration in the hinge mounting portion 18 by dispersing the input load rearward through the connecting member 23b.

[0095] Furthermore, in this door structure 1, it is not necessary to sandwich the reinforcing member 25a between the outer panel 8 and the connecting member 23a; the connecting member 23a is joined by the rolled edge of the outer panel 8. The reinforcing member 25a is installed below the rolled edge joint 17.

[0096] According to this door structure 1, the joint between the connecting member 23a and the outer panel 8 can be made thin-walled through the rolled edge joint 17. Furthermore, the door structure 1 utilizes the rolled edge joint 17 to prevent rainwater, car wash water, etc., from intruding between the connecting member 23a and the outer panel 8. According to the door structure 1, water can be prevented from adhering to the joint surface between the reinforcing member 25a and the connecting member 23a.

[0097] In addition, in this door structure 1, at least the outer panel component 10 of the outer panel component 10 and the inner panel component 9 is a thermoformed component.

[0098] According to this door structure 1, the strength of the outer panel member 10 is higher than that of a structure produced by a conventional stamping method. It should be noted that the inner panel member 9 in this embodiment is envisioned as a conventionally stamped material, but a hot-pressed component may also be used.

[0099] In addition, in this door structure 1, the reinforcing component 25 is fixed to the outer panel 8 by means of adhesive sealant (adhesive material).

[0100] According to this door structure 1, the deformation of the outer panel 8 during a side collision can be suppressed more effectively compared to the case where no adhesive sealant 16 (adhesive material) is used.

[0101] The embodiments of the present invention have been described above, but the present invention is not limited to the foregoing embodiments and can be implemented in various ways.

[0102] Figure 5A This is a right-side view of the outer panel member 10 in the modified door structure 1. Figure 5B This is a left-side view of the panel outer component 10 in the modified door structure 1.

[0103] As described above, the second connecting member 23b and the second reinforcing member 25b are connected to the outer panel member 10 at a height corresponding to the hinge mounting portion 18 (see reference). Figure 1 and Figure 2 ).

[0104] In contrast, in variant examples, such as Figure 5A and Figure 5B As shown, the second connecting member 23b and the second reinforcing member 25b are arranged on the outer panel member 10 such that they overlap with the lower edge 21 of the outer panel member 10.

[0105] In addition, in the aforementioned embodiment, a door structure 1 in which the front longitudinal edge 19 of the panel outer member 10 has a hinge mounting portion 18 is described.

[0106] However, the present invention can also be applied to vehicles with hinges on the rear side of the side door 2. In such a door structure 1, although the figure is omitted, the end of the connecting member 23b is connected to the hinge mounting portion formed on the rear longitudinal edge 20.

Claims

1. A door structure having an outer panel and an inner panel, characterized in that, The inner panel is composed of an inner panel component disposed on the inside of the vehicle interior and an outer panel component disposed on the outside of the vehicle interior. The outer panel component has: The front longitudinal edge extends longitudinally at the front end of the outer panel member; The rear longitudinal edge extends longitudinally at the rear end of the outer panel member; The lower part connects the lower end of the front longitudinal side to the lower end of the rear longitudinal side; A connecting component that connects the front longitudinal edge to the rear longitudinal edge in the front-rear direction; as well as A reinforcing member, which separately engages with the connecting member in a manner extending along the front-rear direction, forming a closed cross-section between itself and the connecting member. The front longitudinal edge has a protruding wall that extends outward in the vehicle width direction. The reinforcing member engages with the connecting member from the outside in the vehicle width direction. The end of the reinforcing member is positioned opposite the protruding wall.

2. The door structure according to claim 1, characterized in that, The inner side of the end of the connecting member in the vehicle width direction is inclined in such a way that it gradually separates from the outer panel side as it moves away from the central side of the connecting member.

3. The door structure according to claim 2, characterized in that, The end of the connecting component is connected to the hinge mounting portion formed on the front longitudinal edge or the rear longitudinal edge.

4. The door structure according to claim 1, characterized in that, At least one of the outer panel component and the inner panel component is a thermoformed component.

5. The door structure according to claim 1, characterized in that, The reinforcing component is fixed to the outer panel by means of adhesive material.

Images