JPH0433130Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] This invention relates to a vehicle door structure.

[Prior Art] As a conventional vehicle door structure, for example, the 11th
As shown in FIG. 12, a door outer panel 103 and a door inner panel 105 are joined at their peripheral edges to form a bag shape. and,
The vehicle door 101 has a hinge 1 at the edge in the front and rear direction of the vehicle body.
07, this hinge 107 is attached to the vehicle body side, and the vehicle door 101 is supported so as to be openable and closable. A door lock 109 is attached to the rear edge of the vehicle door 101, and the door lock 109 is configured to be engaged with a striker 111 attached to the vehicle body when the door is closed, thereby fixing the vehicle door 101 to the vehicle body. There is.

By the way, when the vehicle door 101 is in the open state and a person leans on the top of the door 101 and a vertical load W is applied as shown in FIG. When the door lock 109 side sags downward and the amount of sagging increases, the engagement position between the door lock 113 and the striker 117 shifts, causing the door 10 to sag downward.
There was a fear that 1 would not close. In particular, the door outer panel 103
If the door 101 is made of synthetic resin, the overall rigidity of the door 101 is low, and as shown by the broken line in FIGS. 13 and 14, the door lock side is displaced downward and torsionally deformed due to the vertical load W. . As shown in FIG. 14, this torsional deformation is caused by the angles α ₁ and α ₂ formed by the corner portions of the door inner panel 105 changing to the angles β ₁ and β ₂ due to the vertical load W, and α ₁ <β ₁ ，
This is caused by the relationship α ₂ > β ₂ . If the amount of torsional deformation becomes large, the engagement position between the door lock 109 and the striker 111 will shift, and the door 101 will not close. Also,
At the upper part of the door 101 on the door lock 109 side, the door outer panel 103 and the door inner panel 105
There was a risk that the adhesive bond with the door would come off and the door outer panel 103 would open outward.

On the other hand, there is a method as described in Japanese Utility Model Application Publication No. 57-48116. This is designed to increase the overall rigidity of the door by extending a gusset over each corner of the door inner panel and fixing both ends of the gusset to the inside of the door inner panel.

[Problems to be solved by the invention] However, in this type of door structure, when the door is deformed under the vertical load as described above, when a moment acts on the joint surface between the gusset and the door inner panel, There is a risk that mutual bonding may peel off. Furthermore, since the gusset of the door inner panel is located inside the door inner panel and there is a gap between the gusset and the door inner panel, the door outer panel may easily dent and give a weak feeling.

Therefore, it is necessary to increase the rigidity of the door outer panel itself, and there is a limit to the weight reduction.

This invention was devised in view of these conventional problems, and it is possible to improve the rigidity of the door and the mounting rigidity between the gusset and the door inner panel, while making the door outer panel thinner. An object of the present invention is to provide a vehicle door structure that can easily prevent dents.

[Means for solving the problem] In order to achieve the above object, this invention has a front wall 1a, a rear wall 1b, and a lower wall that protrude outward in the vehicle width direction at the front and rear edges and the lower edge of the door inner panel 1. wall 1
c, and the outer edge 1 of each wall 1a, 1b, 1c
In a vehicle door structure in which a circumferential edge of a door outer panel is aligned and connected to p, a mounting surface facing the door outer panel is provided on at least one of the front wall 1a, the rear wall 1b, and the inner surface on the outer edge 1p side of the lower wall 1c. 1e, 1d, 1f are provided, and the door inner panel 1
The mounting surfaces 1d, 1 at the corner portions 1g, 1h of
A reinforcing material 5 is provided to span e and 1f, and a projecting shape having upper and lower locking surfaces 1j is provided on the mounting surfaces 1d and 1e of at least one of the front wall 1a and the rear wall 1b at the corner portions 1g and 1h. A first locking portion 1k is provided, and locking surfaces 1j are provided on the front and rear of the mounting surface 1f of the lower wall 1c.
A second locking portion 1k having a projecting shape is provided, and an engagement opposite to the locking surface 1j of the first locking portion 1k is provided at the end of the reinforcing member 5 on the front wall 1a or rear wall 1b side. A first engaging portion 5a having a surface 5b is provided, and engaging pieces 5 that abut against the mounting surfaces 1d and 1e of the front wall 1a or the rear wall 1b are provided on both upper and lower sides of the first engaging portion 5a.
c, and a second engaging portion 5a having an engaging surface 5b opposite to the locking surface 1j of the second locking portion 1k is provided at the end of the reinforcing member 5 on the lower wall 1c side. , lower walls 1c on both front and rear sides of the second engaging portion 5a.
An engaging piece 5c is provided which abuts against the mounting surface 1f, and the first engaging portion 5a is engaged with the first locking portion 1k, and the engaging piece 5c is brought into contact with the mounting surface 1d, 1e.
The second engaging part 5a is engaged with the second engaging part 1k, and the engaging piece 5c is fixed to the mounting surface 1f.

[Function] According to the configuration of this invention, the door inner panel is reinforced by the reinforcing material, and the rigidity of the entire door is improved. Therefore, even if a vertical load is applied due to someone leaning on the open door, the door is prevented from lowering or twisting. In other words, when a moment is applied to the fixed part of the reinforcing material due to a vertical load, the reinforcing material engages with the door inner panel via the first and second engaging parts and the first and second locking parts. This allows the moment to be effectively received. In other words, when a moment is applied to one end of the reinforcing material due to a vertical load on the mounting surface of the front or rear wall of the corner part, the engagement surface and the locking surface face this moment. The load is reliably transferred to the reinforcement through the surface. At the other end of the reinforcement, this load is transmitted to the door inner panel at the attachment surface in the lower wall through the moment-opposed engagement surface and locking surface. Therefore, the load that would otherwise be concentrated on the corner portion of the door inner panel can be distributed over the entire door.

When the reinforcing material is fixed to the door inner panel by the engaging piece, the vertical load acting on the door is received in the shearing direction, so that the reinforcing material and the door inner panel can be firmly connected.

[Example] Hereinafter, a first example of this invention will be described based on the drawings.

FIG. 1 shows a perspective view of the door inner panel 1. The door inner panel 1 includes a front wall 1a that protrudes outward in the vehicle width direction at the front and rear edges and the lower edge.
It has a rear wall 1b and a lower wall 1c, each wall 1a, 1b,
The outer edge side of 1c is folded back, and a front folded part 1d, a rear folded part 1e, and a lower folded part 1f, each of which constitutes a mounting surface facing the outer panel, are formed on the inner surface of the outer edge side. Each folded part 1d, 1
A joining flange 1p is formed on the outer edges of e and 1f as an outer edge portion to which a door outer panel is attached.

A hinge 3 is attached to the front wall 1a of the door inner panel 1, and a door lock (not shown) is attached to the rear wall 1b.

On the other hand, the door inner panel 1 has a front wall 1a.
and a corner portion 1 between the rear wall 1b and the lower wall 1c
A gusset 5 is stretched diagonally across the door inner panel 1 as a reinforcing material for reinforcing the door inner panel 1.
It is fixed at f.

As shown in FIG. 2, the gusset 5 has an engagement recess 5a as an engagement part.
An engagement piece 5c is connected to the edge of the engagement wall 5b of a.

The engagement recesses 5a located on the front wall 1a and rear wall 1b sides of the door inner panel 1 constitute the first engagement part (however, in FIG. 2, the engagement recesses 5a on the rear wall 1b side are shown). ), and the one located on the lower wall 1c constitutes the second engaging portion (not shown in FIG. 2, see FIG. 1).

Therefore, the gusset 5 has an engaging wall 5b constituting an engaging surface, and has a substantially constant cross-sectional shape.

Note that the engaging piece 5c is formed to be slightly wider at the end of the gusset 5.

Furthermore, the engaging walls 5b located on the front wall 1a and rear wall 1b side of the door inner panel 1 constitute a first engaging surface, and the engaging wall 5b located on the lower wall 1c side constitutes a second engaging surface. Configure.

On the other hand, the door inner panel 1 has a locking surface that engages with the engagement wall 5b of the gusset 5 as shown in FIGS. A protruding locking protrusion 1k with a wall 1j
is formed.

The locking wall 1j of the locking protrusion 1k is the folded portion 1
The ones on the d and 1e sides are provided above and below the locking protrusion 1k and face approximately in the vertical direction, and the ones on the folded portion 15 side are provided on the front and rear of the locking protrusion 1k (see Fig. 1) and face approximately in the vertical direction. It faces forward and backward.

Therefore, the locking protrusions 1k on the front wall 1a and the rear wall 1b constitute a protruding first locking portion, and the locking protrusion 1k on the lower wall 1c constitutes a protruding second locking portion. are doing.

The end of each gusset 5 is
As shown in the figure, each engagement recess 5a is connected to each locking protrusion 1.
k while each engaging piece 5c is fitted into each folded part 1
d, 1e, and 1f, and are fixed by spot welding.

Corner parts 1g, 1h of door inner panel 1
Both gussets 5 that are hung over have the same configuration,
Each end thereof is connected to the locking protrusion 1k and the engagement recess 5a as described above. In this state, the outer surface of the engagement recess 5a of the gusset 5 is formed substantially flush with the joining flange 1p of the door inner panel 1.

Joint flange 1p of the door inner panel 1
For example, the peripheral edge of a resin-molded door outer panel (not shown) is adhesively fixed to the door outer panel.

Next, the operation of the above embodiment will be described.

When the door is in the open state, if a vertical load W as shown in Fig. 1 is applied to the door lock side of the door due to someone leaning on it, etc., the door inner panel 1 tends to be displaced downward and torsionally deformed. , a moment M acts on the joint ends of the gussets 5. As shown by the arrows in FIGS. 1 and 5, this moment M is generated from the locking wall 1j of the locking protrusion 1k on the door inner panel 1 side to the engagement of the gusset 5 at the folded portion 1e. It is transmitted to the engagement wall 5b of the recess 5a, and is further transmitted to the gusset 5 at the other end of the gusset 5.
from the engagement recess 5a to the locking protrusion 1k of the folded portion 1f.
is transmitted to. Also in the gusset 5 on the hinge 3 side, from the folded part 1f to the locking protrusion 1k and the engagement recess 5
The load is transmitted to the gusset 5 via the gusset 5, and the load is transmitted from the other end of the gusset 5 to the folded portion 1d via the engagement recess 5a and the locking protrusion 1k.

Therefore, the load is distributed over the entire door.

Further, since the gusset 5 has a substantially uniform cross-sectional shape, deformation due to stress concentration can be prevented. Therefore, the gusset 5 suppresses angular changes in the corner portions 1g, 1h of the door inner panel 1, thereby restricting downward displacement and torsional deformation of the door. Therefore, it is possible to prevent the engagement position between the door lock and the striker from shifting, and the door will not become unable to close. Also,
Since twisting deformation of the door is suppressed, the door outer panel molded from resin is replaced by the door inner panel 1.
This prevents the door outer panel from peeling off from the joint flange 1p, and prevents the door outer panel from opening outward.

Note that rather than fixing the gusset 5 between the walls 1a, 1b, and 1c, the gusset 5 is attached to each of the outer folded portions 1d, 1e, and
It has been experimentally confirmed that the downward displacement and torsional deformation of the door inner panel 1 due to the vertical load W are reduced when the door inner panel 1 is fixed between 1f.

Further, when the door outer panel receives an external pressing force, the outer surface of the engaging recess 5a of the gusset 5 receives the door outer panel, so that the door outer panel does not easily dent, and the rigidity against pressing can be significantly improved. Therefore, it is possible to make the door outer panel thinner and lighter.

When a car encounters a side collision or the like and external force is applied to the door from the side, this external force is dispersed by the gusset 5 to the front wall 1a, rear wall 1b, and lower wall 1c, and is concentrated on some members. It is suppressed from acting on At the same time, the front pillar (not shown)
The external force is transmitted and dispersed to the front and center pillars, and the collision energy can be absorbed not only by the door itself but also by the entire side structure including the front pillar and center pillar. Therefore,
Breaking of the hinge 3 and door lock (not shown) is prevented, and the door does not intrude into the vehicle interior.

6 to 8 show a second embodiment of this invention, in which locking pieces 5c of a gusset 5 are attached to the front wall 1a, rear wall 1b, and lower wall 1c of the door inner panel 1. Bracket 7 with an L-shaped cross section that overlaps with
is fixed by spot welding or the like, and the locking piece 5c of the gusset 5 is fixed to this bracket 7 by spot welding or the like to reinforce the attachment portion of the gusset 5 to the door inner panel 1. Note that the same components as those in the first embodiment are given the same reference numerals and the explanation thereof will be omitted. According to such an embodiment,
Since force can also be transmitted to the gusset 5 through the bracket 7, deformation can be further prevented.

FIG. 9 shows a third embodiment of this invention, which is a modification of the first and second embodiments. In this embodiment, a locking protrusion 1 is formed as a locking portion on each folded portion 1e of a door inner panel 1.
m is formed in a wave shape consisting of a plurality of protrusions 1Q, and an engagement recess 5d as an engagement portion formed in the gusset 5 is formed in a wave shape consisting of a plurality of recesses 5e.

Therefore, substantially the same effects as those of the first embodiment can be expected, and the surface receiving the moment increases, the load can be received in a distributed manner, and the mounting strength can be further improved.

FIG. 10 shows a fourth embodiment of this invention, and this embodiment is a structural example in which the gusset 5 is fastened together with a door outer panel 9 formed of resin. In this embodiment, a locking protrusion 1k is provided on each folded portion 1d, 1e, 1f of the door inner panel 1.
At the same time, a bolt insertion hole 11 is formed, and a bolt insertion hole 13 corresponding to the bolt insertion hole 11 of the door inner panel 1 is formed in the engaging piece 5c of the gusset 5. On the other hand, nuts 15 corresponding to the bolt insertion holes 11 and 13 are attached to the door outer panel 9 via a retainer 17. Then, the engagement recess 5a of the gusset 5 is inserted into each of the folded parts 1d, 1e, 1e of the door inner panel 1.
While engaging with the locking protrusion 1k of 1f, the engaging piece 5c is overlapped with each folded portion 1d, 1e, 1f. Then, the door outer panel 9 is superimposed on this, and the bolts 19 are inserted into the bolt insertion holes 11 and 13.
The engaging piece 5c of the gusset 5 and the door outer panel 9 are fixed to the door inner panel 1 by tightening them with a nut 15.

Therefore, in this embodiment, substantially the same effects as in the first embodiment can be expected, and the gusset 5 can also be replaced.

[Effects of the device] As is clear from the above explanation, according to the configuration of this device, even if a vertical load is applied to the door due to someone leaning on the open door, the first and second engagements are The locking surface and the engaging surface of the stopper and the engaging part can reliably receive the moment, and the load that would otherwise be concentrated at the corner can be distributed over the entire door, improving the rigidity of the entire door and preventing the door from falling. This suppresses torsional deformation and prevents the door from closing incorrectly. Also,
When the reinforcing material is fixed to the door inner panel, the vertical load acting on the door is received in the shear direction, so the bond is strong, and from this point of view as well, the rigidity can be improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a door inner panel according to a first embodiment of the invention, FIG. 2 is an exploded perspective view showing a gusset attachment part, and FIG. 3 is a cross-sectional view taken along the - line in FIG. 4 is a cross-sectional view taken along the - line in FIG. 2, FIG. 5 is a cross-sectional view taken along the - line in FIG. 7 is a sectional view taken along the - line in FIG. 6, FIG. 8 is a sectional view taken along the - arrow in FIG. 6, and FIG. 9 is a sectional view taken along the - line in FIG. FIG. 10 is an exploded perspective view of a door outer panel according to a fourth embodiment of the present invention; FIG. 11 is a side view of an automobile having a conventional vehicle door structure; FIG. 12 is a sectional view similar to FIG. 13 is an explanatory diagram showing a displacement state of the door, and FIG. 14 is an explanatory diagram showing a displacement state of a door having a door outer panel made of synthetic resin. Explanation of symbols representing main parts of the drawings: 1...Door inner panel, 1a...Front wall, 1b...Rear wall,
1c... lower wall, 1d, 1e, 1f... folded part (mounting surface), 1g, 1h... corner part, 1j...
Locking wall (locking surface), 1k, 1m... Locking protrusion (first, second locking part), 1p... Joining flange (outer edge), 5... Gusset (reinforcing material), 5b ...Engagement wall (engagement surface), 5c...Engagement piece.

Claims (1)

[Scope of utility model registration request] A front wall 1a, a rear wall 1b, and a lower wall 1c that protrude outward in the vehicle width direction are provided at the front and rear edges and the lower edge of the door inner panel 1, and a door outer is provided at the outer edge 1p of each of the walls 1a, 1b, and 1c. In a vehicle door structure in which peripheral edges of panels are joined together, at least one of the front wall 1a, the rear wall 1b, and the lower wall 1c.
Mounting surfaces 1e, 1d, 1f facing the door outer panel are provided on the inner surface on the outer edge 1p side of the door, and the mounting surfaces 1 are provided at the corner portions 1g, 1h of the door inner panel 1
A reinforcing material 5 is provided across d, 1e, and 1f, and the front wall 1a and the rear wall 1b are provided at the corner portions 1g and 1h.
A protruding first locking portion 1k having locking surfaces 1j on the top and bottom is provided on at least one of the mounting surfaces 1d and 1e, and a protrusion having locking surfaces 1j on the front and rear is provided on the mounting surface 1f of the lower wall 1c. A second locking portion 1k having a shape is provided,
A first engaging portion 5a having an engaging surface 5b opposite to the locking surface 1j of the first locking portion 1k is provided at the end of the reinforcing member 5 on the front wall 1a or rear wall 1b side; , a front wall 1 is provided on both upper and lower sides of the first engaging portion 5a.
An engaging piece 5c is provided that abuts against the mounting surfaces 1d and 1e of the rear wall 1b, and is provided at the end of the reinforcing member 5 on the lower wall 1c side, facing the locking surface 1j of the second locking portion 1k. A second engaging portion 5a having an engaging surface 5b is provided, and engaging pieces 5c that abut against the mounting surface 1f of the lower wall 1c are provided on both front and rear sides of the second engaging portion 5a, and The first engaging portion 5 is attached to the locking portion 1k.
a and the engagement piece 5c to the mounting surface 1.
d, 1e, and engages the second engaging part 5a with the second engaging part 1k, and the securing piece 5
A vehicle door structure characterized in that c is fixed to the mounting surface 5f.