JP2004009975A - Door structure of center pillarless vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure safety in a side collision and increase the degree of freedom in designing the structure of a door. <P>SOLUTION: Inside the door outer panel 46 in the rear end section of a front side door 12, an outer reinforcement 30 is arranged along the vertical direction of the vehicle from the upper end section to the lower end section of the front door side door 12, and inside the door inner panel 32 in the rear end section of the front side door 12, an inner reinforcement 34 is arranged along the vertical direction of the vehicle, and the inner reinforcement 34 is connected to the outer reinforcement 30. To the inner reinforcement 34, an upper door lock device 20, a lower door lock device 22 and a door connecting device 24 are fixed. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a door structure of a center pillar-less vehicle, and more particularly to a door structure of a center pillar-less vehicle having a front side door and a rear side door that have no center pillar and have no restriction on opening and closing order.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a door structure of a center pillar-less vehicle having a front side door and a rear side door in a vehicle such as an automobile having no center pillar, an example thereof is disclosed in JP-A-2001-26218.
[0003]
As shown in FIG. 20, in the center pillar-less vehicle door structure, a front side door 102 and a rear side door 104 provided at a side opening of the vehicle body 100 are provided in order to ensure safety in a side collision (side collision). The reinforcements 106 and 108 obtained by hydroforming high-strength steel are provided near the joint surfaces of the above.
[0004]
[Problems to be solved by the invention]
However, in the door structure of the center pillar-less vehicle, at the time of a side collision, the upper end portions 106A, 108A and the lower end portions 106B, 108B of the reinforcements 106, 108 respectively have an upper side sill 110 as a roof side portion and a lower side as a rocker portion. It is designed to engage with the side sill 112. As a result, in order to reliably prevent the front side door 102 and the rear side door 104 from moving to the passenger compartment side in the event of a side collision, and to ensure safety, the vertical length of the reinforcements 106 and 108 must be sufficient. And the degree of freedom in designing the door structure is reduced.
[0005]
An object of the present invention is to provide a door structure for a center pillarless vehicle that can ensure the safety in a side collision and increase the degree of freedom in designing the door structure in consideration of the above facts.
[0006]
[Means for Solving the Problems]
The present invention according to claim 1 is a door structure of a center pillarless vehicle including a front side door and a rear side door that have no restriction on the opening and closing order,
An outer reinforcement arranged along the vehicle vertical direction from the upper end to the lower end of the front side door inside the door outer panel at the rear end of the front side door;
An inner reinforcement arranged along the vehicle up-down direction inside the door inner panel at the rear end of the front side door and coupled to the outer reinforcement,
Door lower locking means fixed to the inner reinforcement,
Door upper locking means fixed to the inner reinforcement,
Door central locking means fixed to the inner reinforcement,
It is characterized by having.
[0007]
Therefore, when another vehicle or the like collides with the rear portion of the front side door from the outside in the vehicle width direction, a load is input inward in the vehicle width direction to the portion of the front side door where the door center locking means is provided. At the same time, a downward inward moment acts on a portion of the front side door where the upper door lock means is disposed, and an upward inward direction acts on a portion of the front side door where the lower door lock means is disposed. Moment acts. At this time, the load is dispersed in the vertical direction of the front side door via the inner reinforcement to which the door center locking means is fixed and the outer reinforcement to which the inner reinforcement is connected. Further, the respective moments are dispersed below or above the front side door through an inner reinforcement to which the upper door lock means or the lower door lock means is fixed and an outer reinforcement to which the inner reinforcement is connected. As a result, the upper door lock means, the lower door lock means, and the door center lock means can be reliably protected from damage at the time of a side collision, so that the front side door can be prevented from moving into the vehicle interior, and the safety at the time of a side collision can be prevented. Nature can be secured. Also, unlike the conventional structure, the vertical length of the reinforcement is sufficiently ensured, and there is no need to overlap the rocker part and the roof side part on the outside in the vehicle width direction. In addition, the degree of freedom in designing the door structure can be increased.
[0008]
According to a second aspect of the present invention, in the door structure of the center pillar-less vehicle according to the first aspect, a reinforcing pipe is disposed at a position across the door belt line in the outer reinforcement.
[0009]
Therefore, in addition to the contents described in claim 1, the reinforcing pipe arranged at a position straddling the door belt line in the outer reinforcement can be used as a substitute for the center pillar at the rear end of the front side door of the center pillarless vehicle. Strength and rigidity can be ensured, and the strength performance can be ensured in a minimum space as compared with the case where the strength and rigidity equivalent to the center pillar are ensured only by sheet metal reinforcement. Further, at the time of a side collision, the door belt line of the front side door and a portion in the vicinity thereof can be reliably prevented from moving toward the vehicle interior.
[0010]
According to a third aspect of the present invention, in the door structure of the center pillarless vehicle according to any one of the first and second aspects, the inner reinforcement is divided into a plurality of reinforcements.
[0011]
Therefore, in addition to the contents described in any one of the first and second aspects, the yield of materials at the time of manufacturing the inner reinforcement is improved, and the manufacturing cost can be reduced.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
One embodiment of a door structure of a center pillarless vehicle according to the present invention will be described with reference to FIGS.
[0013]
In the drawings, the arrow FR indicates the vehicle forward direction, the arrow UP indicates the vehicle upward direction, and the arrow IN indicates the vehicle width inside direction.
[0014]
As shown in FIG. 11, the vehicle according to the present embodiment is a center pillarless vehicle having no center pillar, and among front and rear doors on the side of the vehicle body 10, a front side door 12 is a swing door, and a rear side door. Reference numeral 14 denotes a sliding door.
[0015]
The front side door 12 has a front end portion 12A attached to a front pillar 18 by a pair of upper and lower well-known hinges 15 and 16, and when opening from the closed position, the front side door 12A extends outward in the vehicle width direction around the hinges 15 and 16. It is designed to rotate.
[0016]
On the other hand, the rear side door 14 is provided with rollers (not shown) as a well-known slide mechanism, and these rollers and a rail (not shown) as a well-known slide mechanism provided on the vehicle body 10 side are provided. It is slidable between a closed position and an open position. When the rear side door 14 is opened from the closed position, first, the rear side door 14 is moved diagonally rearward and outward of the vehicle. As a result, the opening order of the front side door 12 and the rear side door 14 is not limited, and even if one is closed, the other can be opened and closed.
[0017]
An upper door lock device 20 as a door upper locking means is disposed on a rear end upper part 12B of the front side door 12, and a lower part as a door lower locking means is provided on a rear lower part 12C of the front side door 12. A side door lock device 22 is provided.
[0018]
Further, a door connecting device 24 as a door central locking means is provided at a vertical intermediate portion 12D at the rear end of the front side door 12, and a striker 26 which engages with the door connecting device 24 has The rear side door 14 is disposed at a front middle portion 14A in the vertical direction.
[0019]
As shown in FIG. 3, the inside of the door outer panel at the rear end of the front side door 12, that is, the inside of the door at the rear end of the door outer panel not shown in FIG. An outer reinforcement 30 is provided along the vehicle up-down direction to the lower end.
[0020]
On the other hand, inside the door inner panel at the rear end of the front side door 12, that is, inside the door at the rear end 32A of the door inner panel 32, the upper side to the lower end of the front side door 12 extend in the vehicle vertical direction. Thus, an internal reinforcement 34 is provided. The inner reinforcement 34 is divided into a first reinforcement 36, a second reinforcement 38, a third reinforcement 40, and a fourth reinforcement 42, and the inner reinforcement 34 is an outer reinforcement. 30.
[0021]
As shown in FIG. 1, an upper door lock device 20 is fixed to an upper end of the inner reinforcement 34.
[0022]
As shown in FIG. 4, the cross-sectional shape of the upper end portion 36A of the first reinforcement 36 constituting the upper portion of the inner reinforcement 34 when viewed from the vehicle up-down direction is U-shaped, and the rear wall portion 36B has A flange 36C is formed on the outside in the vehicle width direction toward the rear of the vehicle. The rear end 36D of the flange 36C is coupled to the rear end 46A of the door outer panel 46 by hemming.
[0023]
The upper door lock device 20 is disposed in the U-shaped cross section of the upper end portion 36A of the first reinforcement 36, and the upper door lock device 20 connects the rear wall portion 36B of the first reinforcement 36. It is fixed to the rear wall portion 32B of the door inner panel 32 by screws 48 through the door. The rear wall portion 36B of the first reinforcement 36 is welded to the rear wall portion 32B of the door inner panel 32.
[0024]
In addition, the code | symbol 50 in FIG. 4 has shown the glass run, and the code | symbol 52 has shown the door glass.
[0025]
As shown in FIG. 2, in a portion 12E of the front side door 12 above the belt line 53, as shown in FIG. 5, the cross-sectional shape of the first reinforcement 36 viewed from the vehicle up-down direction has an opening. It has a U-shape facing outward in the vehicle width direction. A flange 36E is formed at the opening end on the front side of the vehicle toward the front of the vehicle. A flange 36F is formed obliquely outward and rearward. A front edge 30A of the outer reinforcement 30 is connected to the flange 36E of the first reinforcement 36, and a rear edge of the outer reinforcement 30 is connected to the flange 36F of the first reinforcement 36. 30B are connected. Therefore, the first reinforcement 36 and the outer reinforcement 30 constituting the inner reinforcement 34 form a closed cross-sectional structure.
[0026]
Further, in the outer reinforcement 30, a groove 54 having a semi-circular cross-sectional shape protruding toward the door inner panel 32 is formed along the vehicle vertical direction, and the semi-circular groove 54 includes: A reinforcing pipe 56 is provided.
[0027]
A flange 32C is formed toward the rear of the vehicle at a vehicle width direction outer end of a rear wall portion 32B of the door inner panel 32, and the flange 32C is formed on the rear end portion 46A of the door outer panel 46 by hemming. Are combined.
[0028]
Note that reference numeral 55 in FIG. 5 indicates a channel.
[0029]
As shown in FIG. 2, the groove 54 and the reinforcing pipe 56 of the outer reinforcement 30 are formed from a portion 12E above the belt line 53 to a portion 12F below the belt line 53 across the belt line 53 in the front side door 12. And are arranged.
[0030]
As shown in FIG. 2, at a portion 12F of the front side door 12 below the belt line 53, as shown in FIG. 6, the cross-sectional shape of the first reinforcement 36 as viewed in the vehicle vertical direction is L-shaped. The front end edge 36H of the vehicle width direction inner wall portion 36G is connected to the vehicle width direction inner wall portion 32D of the door inner panel 32. Further, a flange 36K is formed outwardly in the vehicle width direction at a vehicle width direction outer end of the rear wall portion 36J of the first reinforcement 36, and the flange 36K is connected to the rear wall portion of the door inner panel 32. 32B.
[0031]
A front wall portion 30C is formed on the front end edge of the outer reinforcement 30 inward in the vehicle width direction, and a flange 30D is formed on the front end portion of the front wall portion 30C in the vehicle width direction toward the front of the vehicle. Is formed. The flange 30D is connected to the flange 36H of the first reinforcement 36.
[0032]
A flange 30 </ b> E is formed at the rear end edge of the outer reinforcement 30 toward the outside in the vehicle width direction, and the flange 30 </ b> E is connected to the flange 36 </ b> K of the first reinforcement 36.
[0033]
As shown in FIG. 9, a lock means attaching portion 60 is formed on the rear end upper portion of the second reinforcement 38 constituting the inner reinforcement 34 toward the inside in the vehicle width direction.
[0034]
As shown in FIG. 7, the door connecting device 24 is mounted on the locking means mounting portion 60 of the second reinforcement 38 from the vehicle front side, and the striker provided on the rear side door 14 is attached to the door connecting device 24. 26 are engaged.
[0035]
As shown in FIG. 8, a lower end portion 32 </ b> E of the door inner panel 32 is connected to a lower end portion 30 </ b> F of the outer reinforcement 30. The lower door lock device 22 is fixed to the bottom portion 32G of the door inner panel 32 via a bottom portion 40A of the third reinforcement 40 having a plate-like shape made of a thick plate by a fastening means such as a bolt. The lower door lock device 22 is adapted to engage with a striker 64 disposed on the rocker 62 side.
[0036]
The lower edge 46 </ b> B of the door outer panel 46 is joined to the lower edge 32 </ b> F of the door inner panel 32 by hemming, and a surface of the lower part of the outer reinforcement 30 on the door outer panel 46 side via a bracket 66. An impact beam 68 made of a pipe material is attached.
[0037]
As shown in FIG. 9, a rear end upper part 42A of a fourth reinforcement 42 constituting the inner reinforcement 34 is joined to a lower end part 30G of the front wall part 30C of the outer reinforcement 30 by spot welding or the like. The front portion 42B of the fourth reinforcement 42 overlaps with the front portion 40B of the third reinforcement 40 to prevent the lower end of the front side door 12 from moving into the vehicle interior at the time of a side collision. A mounting portion for a sub-latch (not shown) for prevention together with the device 22 is formed.
[0038]
Further, an upper side vicinity 30H of the lower end portion 30F of the outer reinforcement 30 is coupled to the vehicle width direction outer side wall portion 40C of the third reinforcement 40 from the vehicle width direction outer side. The lower edge 38A of the second reinforcement 38 is joined to the wall 40D from the vehicle rear side by spot welding or the like.
[0039]
As shown in FIG. 10, a box-shaped wall is formed around the lower door lock device 22 by the outer reinforcement 30, the second reinforcement 38, and the like. A work opening 70 is formed below the inner wall portion 38B in the vehicle width direction of the second reinforcement 38, and a portion of the door inner panel 32 facing the opening 70 is also provided with an opening. 72 are formed.
[0040]
Next, the operation of the present embodiment will be described.
[0041]
In the present embodiment, as shown in FIG. 1, when another vehicle 80 or the like collides with the rear portion of the front side door 12 from the outside in the vehicle width direction (the direction of the arrow A in FIG. 1), the door coupling device in the front side door 12. A load F is input inward in the vehicle width direction to a portion where the upper side door lock device 20 is disposed in the portion where the upper side door 12 is disposed. Acting on the portion of the front side door 12 where the lower door lock device 22 is provided, a moment M2 directed upward and inward acts.
[0042]
At this time, the load F is applied to the inner reinforcement 34 having the second reinforcement 38 in which the lock means mounting portion 60 to which the door coupling device 24 is fixed is formed, and the outer reinforcement 30 to which the inner reinforcement 34 is coupled. And is distributed in the vertical direction of the front side door 12.
[0043]
In addition, the moment M1 is directed downward through the inner reinforcement 34 having the first reinforcement 36 to which the upper door lock device 20 is fixed and the outer reinforcement 30 to which the inner reinforcement 34 is coupled. Distributed.
[0044]
In addition, the moment M2 is generated on the front side door 12 via the inner reinforcement 34 having the third reinforcement 40 to which the lower door lock device 22 is fixed and the outer reinforcement 30 to which the inner reinforcement 34 is coupled. Distributed in the direction.
[0045]
In the present embodiment, as shown in FIG. 9, the fourth reinforcement 42 is coupled to the outer reinforcement 30 in front of the lower door lock device 22, and the third reinforcement 40 is connected to the second reinforcement 40 in the rear. As shown in FIG. 10, a box-shaped wall is formed around the lower door lock device 22. As a result, the moment M <b> 2 can be efficiently dispersed and received over the entirety of the walls, and the cross section of the lower door lock device 22 does not easily collapse during a side collision.
[0046]
As a result, the upper door lock device 20, the lower door lock device 22, and the door connecting device 24 can be firmly protected from damage, and the front side door 12 can be prevented from being deformed. Can be blocked. Further, in the present embodiment, unlike the conventional structure, the vertical length of the reinforcement is sufficiently ensured, and there is no need to overlap the reinforcement with the rocker portion and the roof side portion. And the degree of freedom in designing the door structure can be increased.
[0047]
Further, in the present embodiment, the reinforcing pipe 56 is provided at the portion of the outer reinforcement 30 from the portion 12E above the belt line 53 to the portion 12F below the belt line 53 in the front side door 12, so that the reinforcing pipe 56 is provided. By the pipe 56, at the rear end of the front side door 12 of the center pillarless vehicle, necessary and sufficient strength and rigidity that can be substituted for the center pillar can be secured, and strength and rigidity equivalent to the center pillar can be secured only by sheet metal reinforcement. Compared to the case, the strength performance can be secured with a minimum space. That is, the size of the cross section of the outer reinforcement 30 and the inner reinforcement 34 can be reduced as much as possible, and the dimension L (see FIG. 5) of the front side door 12 can be minimized. In addition, at the time of a side collision, the door belt line 53 of the front side door 12 and a portion in the vicinity thereof can be reliably prevented from moving toward the vehicle interior.
[0048]
Further, in the present embodiment, the inner reinforcement 34 is divided into the first reinforcement 36, the second reinforcement 38, the third reinforcement 40, and the fourth reinforcement 42, so that the inner reinforcement 34 is divided into four parts. In manufacturing, the yield of materials is improved, and manufacturing costs can be reduced.
[0049]
In the above, the present invention has been described in detail with respect to a specific embodiment, but the present invention is not limited to such an embodiment, and various other embodiments are possible within the scope of the present invention. Some will be apparent to those skilled in the art. For example, in the above-described embodiment, the groove 54 is formed in a part of the outer reinforcement 30 from the part 12E above the belt line 53 to the part 12F below the belt line 53 in the front side door 12, and the reinforcing pipe 56 is formed in the groove 54. Instead of this, as shown in FIGS. 12 and 13, as shown in FIGS. 12 and 13, the inner reinforce is formed in a portion from a portion 12 E above the belt line 53 to a portion 12 F below the belt line 53 in the front side door 12. A configuration may be adopted in which an auxiliary reinforcement 84 made of sheet metal is provided between the reinforcement 34 and the outer reinforcement 30.
[0050]
Further, as shown in FIGS. 14 and 15, in the part of the front side door 12 from the part 12E above the belt line 53 to the part 12F below the belt line 53, the inner reinforcement 34 and the outer reinforcement 30 A configuration in which a filler 88 made of a rigid foam or the like is provided in the space between the holes may be adopted. In this case, the weight can be reduced and the NV performance (noise and vibration performance) is improved.
[0051]
As shown in FIGS. 16 and 17, a part 34A of the inner reinforcement 34 is connected to the reinforcing pipe 56 with the groove 54 of the outer reinforcement 30 interposed therebetween. May be directly transmitted to the inner reinforcement 34 instantaneously without an idle running distance.
[0052]
In addition, as shown in FIGS. 18 and 19, in the above embodiment, the divided outer reinforcement 30 and inner reinforcement 34 are integrally formed from the beginning by bonding with a material having a different thickness, laser welding, or the like. By forming a cross section, a configuration may be employed in which the mold cost of each member can be reduced and the number of setting steps at the time of assembly can be reduced.
[0053]
Further, in the above-described embodiment, the inner reinforcement 34 is divided into the first reinforcement 36, the second reinforcement 38, the third reinforcement 40, and the fourth reinforcement 42, but the number of divisions is as follows. It is not limited to four. Further, the inner reinforcement 34 may be formed as a single member, and may be configured so that the die cost of each member can be reduced and the number of setting steps at the time of assembly can be reduced.
[0054]
【The invention's effect】
The present invention according to claim 1 is a door structure of a center pillarless vehicle having a front side door and a rear side door with no restriction on opening and closing order, wherein a front side door has a rear end inside a door outer panel. An outer reinforcement arranged along the vehicle vertical direction from the upper end to the lower end of the side door, and an outer reinforcement arranged along the vehicle vertical direction inside the door inner panel at the rear end of the front side door. Inner reinforcement, which is connected to the inner reinforcement, a door lower locking means fixed to the inner reinforcement, a door upper locking means fixed to the inner reinforcement, a door central locking means fixed to the inner reinforcement, Safety in the event of a side collision, and It has an excellent effect that the degree of freedom in the design of the door structure can be increased.
[0055]
According to the second aspect of the present invention, in the door structure of the center pillar-less vehicle according to the first aspect, the reinforcing pipe is disposed at a position across the door belt line in the outer reinforcement. The strength performance can be ensured in a minimum space, and the door belt line and its vicinity can be prevented from moving toward the vehicle interior.
[0056]
According to the third aspect of the present invention, in the door structure of the center pillarless vehicle according to any one of the first and second aspects, the inner reinforcement is divided into a plurality of reinforcements. In addition to the effects described above, there is an excellent effect that the manufacturing cost can be reduced.
[Brief description of the drawings]
FIG. 1 is an enlarged sectional view taken along line 1-1 of FIG.
FIG. 2 is a perspective view showing a main part of a door structure of the center pillarless vehicle according to one embodiment of the present invention, as viewed obliquely from the front outside of the vehicle.
FIG. 3 is an exploded perspective view showing a main part of a door structure of the center pillarless vehicle according to the embodiment of the present invention, as viewed obliquely from the front outside of the vehicle.
FIG. 4 is an enlarged sectional view taken along line 4-4 in FIG. 2;
FIG. 5 is an enlarged sectional view taken along line 5-5 of FIG. 2;
FIG. 6 is an enlarged sectional view taken along line 6-6 in FIG. 2;
FIG. 7 is an enlarged sectional view taken along line 7-7 of FIG. 2;
FIG. 8 is an enlarged sectional view taken along line 8-8 in FIG. 2;
FIG. 9 is a perspective view showing the lower part of the door structure of the center pillarless vehicle according to one embodiment of the present invention, as viewed from the obliquely front outer side of the vehicle.
FIG. 10 is an enlarged sectional view taken along line 10-10 of FIG. 9;
FIG. 11 is a schematic side view showing a vehicle to which a door structure of a center pillarless vehicle according to an embodiment of the present invention is applied.
FIG. 12 is a cross-sectional view corresponding to FIG. 5, illustrating a door structure of a center pillar-less vehicle according to another embodiment of the present invention.
FIG. 13 is a cross-sectional view corresponding to FIG. 6, showing a door structure of a center pillarless vehicle according to another embodiment of the present invention.
FIG. 14 is a cross-sectional view corresponding to FIG. 5, illustrating a door structure of a center pillar-less vehicle according to another embodiment of the present invention.
FIG. 15 is a cross-sectional view corresponding to FIG. 6, illustrating a door structure of a center pillar-less vehicle according to another embodiment of the present invention.
FIG. 16 is a cross-sectional view corresponding to FIG. 5, illustrating a door structure of a center pillarless vehicle according to another embodiment of the present invention.
FIG. 17 is a cross-sectional view corresponding to FIG. 6, illustrating a door structure of a center pillarless vehicle according to another embodiment of the present invention.
FIG. 18 is a cross-sectional view corresponding to FIG. 5, showing a door structure of a center pillar-less vehicle according to another embodiment of the present invention.
FIG. 19 is a cross-sectional view corresponding to FIG. 6, showing a door structure of a center pillar-less vehicle according to another embodiment of the present invention.
FIG. 20 is a schematic side view showing a vehicle to which a door structure of a center pillarless vehicle according to the related art is applied.
[Explanation of symbols]
10 vehicle body 12 front side door 14 rear side door 20 upper door lock device (door upper lock means)
22 Lower door lock device (Door lower lock means)
24 Door connecting device (door central locking means)
Reference Signs List 30 outer reinforcement 32 door inner panel 34 inner reinforcement 36 first reinforcement 38 second reinforcement 40 third reinforcement 42 fourth reinforcement 46 door outer panel 53 belt line 56 reinforcing pipe

Claims (3)

A door structure of a center pillarless vehicle having a front side door and a rear side door with no restriction on opening and closing order,
An outer reinforcement arranged along the vehicle vertical direction from the upper end to the lower end of the front side door inside the door outer panel at the rear end of the front side door;
An inner reinforcement arranged along the vehicle up-down direction inside the door inner panel at the rear end of the front side door and coupled to the outer reinforcement,
Door lower locking means fixed to the inner reinforcement,
Door upper locking means fixed to the inner reinforcement,
Door central locking means fixed to the inner reinforcement,
A door structure for a center pillarless vehicle, comprising: 2. A door structure for a center pillarless vehicle according to claim 1, wherein a reinforcing pipe is disposed at a position straddling a door belt line in the outer reinforcement. 3. The door structure for a center pillarless vehicle according to claim 1, wherein the inner reinforcement is divided into a plurality of reinforcements.

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