JP4288920B2 - Vehicle side door structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
According to the present invention, a center pillar-less door opening is so-called openable and closable by a front door pivotally attached to the vehicle body via a hinge and a rear door provided behind the front door. The present invention relates to a side door structure of a vehicle having a freestyle structure (double door structure).
[0002]
[Prior art]
Conventionally, as a side door structure of a vehicle in the above-described example, there is the following structure. That is, a continuous door opening without a partition is provided on the side of the vehicle body, and this door opening is covered with a front door and a rear door so that it can be opened and closed, but the front door is pivotally attached to the vehicle body via a front door hinge, The rear door is pivotally attached to the vehicle body via the rear door hinge, and the side door composed of the front door and the rear door is configured as a so-called double door structure, and the rear end of the front door is overlapped outside the front end of the rear door. And the reinforcement member extended in an up-down direction is provided in the front-end part of a rear door (for example, refer patent document 1).
[0003]
[Patent Document 1]
JP 2001-138864 A.
[0004]
[Problems to be solved by the invention]
In the center pillarless double door described above, a reinforcing member formed by bending a plate-like member at the front part of the rear door is provided, and the rear door front end is overlapped on the outer front end of the rear door. There is a problem that the rigidity against the side collision is insufficient and it is difficult to sufficiently reduce the amount of the side door entering the vehicle compartment at the time of the side collision of the vehicle.
[0005]
According to the present invention, in a side door structure of a vehicle, a vertical longitudinal portion of a rear door is formed to be inclined rearward, and a vertical reinforcement is formed in an internal space sandwiched between an outer panel and an inner panel of the rear door front vertical portion. And the vertical impact bar are overlapped when viewed from the side, and the vertical impact bar is substantially vertical in the vertical direction between the front upper corner of the rear door and the portion separated from the front lower corner. In the side door with a double door structure, the rigidity against side collision is improved, and the amount of the door entering the vehicle compartment at the time of side collision can be reduced, thereby improving the safety of passengers. An object of the present invention is to provide a side door structure for a vehicle.
[0006]
[Means for Solving the Problems]
A side door structure for a vehicle according to the present invention (Claim 1) includes a front door in which a continuous door opening without a partition on a vehicle side portion is pivotally attached to a vehicle body via a hinge so as to be opened and closed. A vehicle side door structure that is openably and closably covered by a rear door provided at the rear of the front door, the front vertical side portion of the rear door being formed to be inclined rearward, and the rear door front vertical side portion. The vertical reinforcement bar and the vertical impact bar are arranged in an internal space sandwiched between the outer panel and the inner panel, and the vertical reinforcement bar and the vertical impact bar are arranged so as to overlap in a side view. The vertical reinforcement is vertically extended from the upper and lower ends of the vertical impact bar. The upper and lower end portions of the vehicle body side member overlap with the vehicle body side member in a side view, and a striker is provided at a position overlapping the vertical reinforcement upper end portion of the vehicle body side member. Has a door latch member that extends substantially vertically in the vertical direction between the front upper corner portion and the front lower corner portion of the rear door, and is engaged with the striker above the upper end of the vertical impact bar. It is characterized by being.
[0007]
The longitudinal impact bar having the above-described configuration is preferably formed of high-tensile steel.
According to the above configuration, the vertical reinforcement bar and the vertical impact bar are disposed in the inner space sandwiched between the outer panel and the inner panel of the front vertical side of the rear door, and both are overlapped in a side view. Therefore, the rigidity against the side collision can be improved by the synergistic effect of the vertical reinforcement provided on the front vertical side portion of the rear door and the vertical impact bar.
Further, since the vertical impact bar is disposed so as to extend substantially vertically in the vertical direction between the front upper corner portion and the front lower corner portion of the rear door, the rigidity against the side impact is improved and the side impact is improved. The amount of the rear door entering the vehicle compartment at the time can be reduced, and the safety of the passenger can be improved.
[0008]
The side door structure for a vehicle according to the present invention (Claim 2) also includes a front door that is pivotally attached to a vehicle front side through a hinge so that a continuous door opening without a partition on the side of the vehicle can be opened and closed. A vehicle side door structure that is openably and closably covered by a rear door provided at the rear of the front door, wherein a front vertical side portion of the rear door is formed to be inclined rearward, and a front upper side of the rear door. A vertical impact bar extending substantially vertically in the vertical direction between the corner and the portion spaced from the front lower corner is disposed, A vertical reinforcement extending in the vertical direction along the front vertical side portion is disposed on the front vertical side portion of the rear door, An intermediate portion in the vertical direction of the vertical impact bar is supported by a bracket connected to both the vertical reinforcement and the door inner panel.
[0009]
The longitudinal impact bar having the above-described configuration is preferably formed of high-tensile steel.
According to the above configuration, since the vertical impact bar extending in the vertical direction is disposed substantially vertically at the front portion of the rear door, the rigidity against the side collision is improved, and the amount of the rear door entering the vehicle interior during the side collision is reduced. It is possible to improve the safety of passengers.
Moreover, since the vertical middle part of the vertical impact bar is supported by a bracket connected to both the vertical reinforcement and the door inner panel, it is possible to improve the support rigidity of the vertical impact bar. it can.
[0010]
In one embodiment of the present invention, the vertical impact bar is constituted by a rigid pipe member.
According to the above configuration, since the vertical impact bar is configured by the rigid pipe member, it is possible to improve the rigidity against the side collision without causing an excessive increase in weight.
[0011]
In one embodiment of the present invention, the vertical reinforcement forms a closed section with the rear door body, and the vertical impact bar is disposed inside the closed section between the vertical reinforcement and the rear door body. It is.
[0012]
According to the said structure, while the rigidity with respect to a side collision is further improved with the above-mentioned closed cross-section structure, since the vertical impact bar was arrange | positioned inside the closed cross section, the rigidity with respect to a side collision can be improved further.
[0013]
In one embodiment of the present invention, a lateral impact bar extending in the front-rear direction of the vehicle is disposed so as to overlap the vertical impact bar in the front-rear direction.
According to the above configuration, the rigidity against side collision is further improved by the above-described overlap structure, and bending deformation of the rear door at the time of side collision can be prevented.
[0014]
In one embodiment of the present invention, the front end portion of the lateral impact bar is joined to a vertical reinforcement.
According to the said structure, the rigidity with respect to a side collision can be improved further by the above-mentioned joining structure.
[0015]
In one embodiment of the present invention, the lateral impact bar, the vertical reinforcement, and the bracket are fixed together.
According to the said structure, while being able to aim at these assembly | attachment improvement by the said 3 party joint fastening structure, the improvement of the rigidity can be aimed at.
[0016]
In one embodiment of the present invention, the upper and lower portions of the rear door are provided with a lock mechanism that can be engaged with and disengaged from the vehicle body, and the front portion of the rear door is capable of being engaged and disengaged with respect to the rear portion of the front door. Is provided.
[0017]
According to the above configuration, since the rear door is locked to the vehicle body and the front door by the above-described lock mechanisms, the rigidity is further improved, and the amount of entry of the door into the vehicle compartment when the vehicle collides is further reduced. Can be made.
[0018]
In one embodiment of the present invention, the locking mechanism for the rear door is attached to the upper and lower ends of the vertical impact bar.
According to the above configuration, since the lock mechanism on the rear door side is attached to both ends of the vertical impact bar having rigidity, the support rigidity of the rear door with respect to the vehicle body is improved and the structure is advantageous against side collision.
[0019]
【Example】
An embodiment of the present invention will be described in detail with reference to the drawings.
The drawing shows a side door structure of a vehicle. In FIG. 1, a side door composed of a front door 2 and a rear door 3 is provided on a side surface of the vehicle 1, and the front end of the front door 2 and the rear door 3 are rearward. A front door hinge 4 and a rear door hinge 5 as hinge portions are provided at the end portions, respectively, to form a side door having a freestyle structure (a double door structure). Each of the door hinges 4 and 5 described above has a door side hinge bracket, a hinge pin, and a body side hinge bracket.
[0020]
The above-mentioned front door 2 is pivotably attached to a hinge pillar as a vehicle body rigid member via front door hinges 4, 4, and the above-mentioned rear door 3 is pivotally attached to a rear body via rear door hinges 5, 5. These two doors 2 and 3 cover a continuous door opening 15 (see FIG. 11) without a partition on the side of the vehicle, that is, a center pillar-less door opening that can be opened and closed.
[0021]
The front door 2 and the rear door 3 constituting these side doors are respectively a door main body 6, 7, a door sash portion 8, 9, a window glass 10 (including those made of resin), and a flip window member 11. Of these, impact bars 12, 13, 14 extending in the front-rear direction of the vehicle are provided inside the door bodies 6, 7.
[0022]
The door of the double door structure of this embodiment is configured such that the front door 2 is opened preferentially, and the rear door 3 is allowed to open after the front door 2 is opened.
[0023]
Each of the doors 2 and 3 opens and closes a door opening 15 (see FIG. 11). As shown in FIG. 1, a door latch 16 that can be engaged and disengaged with respect to the rear door 3 is provided at the rear end of the front door 2. The door latch 16 is locked by a striker provided at the front end portion of the rear door 3, and door latches 17 and 18 that can be attached to and detached from the vehicle body are provided above and below the front end portion of the rear door 3. The door opening 15 (see FIG. 11) is configured to be locked by body-side strikers 19 and 20 (see FIG. 11), which will be described later, provided at the upper and lower sides of the door opening 15 (see FIG. 11).
[0024]
FIG. 2 is a side view showing the right side door as viewed from the vehicle interior side, and FIG. 3 is a partial cross-sectional view taken along the line A-A in FIG. 2. When the front door 2 and the rear door 3 are closed, As shown in FIG. 3, an overlap structure is formed in which a rear portion of the front door 2 overlaps a predetermined amount with respect to an outer front portion of the rear door 3.
[0025]
The above-described front door 2 includes a door outer panel 21 and a door inner panel 22, and the door inner panel 22 is positioned between two openings 23 and 24 and these openings 23 and 24 as shown in FIG. 2. Thus, a partition portion 25 is formed that is inclined in the oblique direction, that is, in the front-rear and rear-lower direction and extends in the up-down direction.
[0026]
The rear door 3 described above includes door outer panels 26 and 28 divided into two members, and a door inner panel 27. These panels 26, 27 and 28 are made of light metal such as aluminum or aluminum alloy or light alloy. In addition, a striker 29 is attached to a predetermined portion of the door outer panel 28 constituting the front vertical side portion of the rear door 3 corresponding to the door latch 16 of the front door 2.
[0027]
4 is a side view showing the right front door 2 as viewed from the vehicle interior side, and FIG. 5 is a cross-sectional view taken along the line B-B in FIG. 4, in which the door outer panel 21 and the door inner panel 22 are joined. A hinge reinforcement 30 as a rigid member extending in the vertical direction along the front vertical side portion is provided on the front vertical side portion of the front door 2 configured as described above. As a result, the door rigidity is improved.
[0028]
The hinge reinforcement 30 includes a front piece 30a extending in the front-rear direction of the vehicle on the outside of the vehicle, a rear piece 30b extending in the front-rear direction of the vehicle on the inside of the vehicle, and connecting both the pieces 30a, 30b in the vehicle width direction. And a connecting piece 30c extending in a thick plate member so as to have a substantially Z-shaped cross section.
[0029]
A front door rear reinforcement 31 is provided on the rear vertical side of the front door 2 as a rigid member extending in the vertical direction along the rear vertical side. Thus, the door rigidity is improved and the rigidity against the side collision is improved to reduce the amount of the door 2 entering the vehicle compartment at the time of the side collision of the vehicle.
[0030]
As shown in FIGS. 3, 5, 6, and 7, the front door rear reinforcement 31 includes a rear piece 31a extending in the vehicle front-rear direction on the vehicle exterior side and a front portion extending in the vehicle front-rear direction on the vehicle interior side. A thick plate member is formed in a substantially Z-shaped cross section so as to have a piece 31b and a connecting piece 31c that connects both the pieces 31a and 31b and extends in the vehicle width direction.
[0031]
Furthermore, as shown in FIG. 4, the upper end portion of the front door rear reinforcement 31 is provided with an extending portion 32 continuously extending into the rear vertical side portion 8a of the door sash portion 8, thereby improving the sash rigidity. Further, the seal member is configured to be prevented from being sucked out to the outside of the vehicle due to the negative pressure during high speed traveling.
[0032]
In addition, as shown in FIG. 4, the lower end portion of the front door rear reinforcement 31 is provided with an extension 33 extending forward along the front and rear sides of the lower portion of the front door 2, and the front door rear reinforcement 31 is provided. While improving the rigidity of itself, it is configured to improve the rigidity of the lower part of the front door.
[0033]
Further, as shown in FIG. 6, a plurality of concave and convex portions are formed on the entire front door rear reinforcement 31 having the extending portion 32 and the extending portion 33 at both upper and lower ends, and the front door rear reinforcement is formed. The strength of 31 is improved.
[0034]
As shown in FIGS. 4, 5, and 8, the impact bar 12 described above is provided between the front piece 30 a of the hinge reinforcement 30 and the rear piece 31 a of the front door rear reinforcement 31, that is, between the rigid members. It is joined and fixed so as to extend in the front-rear direction of the vehicle. In other words, the front end portion and the rear end portion of the impact bar 12 are provided so as to overlap with the hinge reinforcement 30 and the front door rear reinforcement 31, and are configured to ensure a strong structure.
[0035]
As shown in FIG. 4, the lower impact bar 13 that is spaced apart from the above-described impact bar 12 in the vertical direction also has a front piece 30 a of the hinge reinforcement 30 and a rear piece 31 a of the front door rear reinforcement 31. Between the rigid members, that is, between the rigid members so as to extend in the longitudinal direction of the vehicle. In other words, the front end portion and the rear end portion of the impact bar 13 are provided so as to overlap with the hinge reinforcement 30 and the front door rear reinforcement 31, and are configured to ensure a strong structure.
[0036]
Further, as shown in FIG. 8, the plurality of impact bars 12 and 13 spaced apart in the vertical direction have a laterally convex cross-sectional shape protruding outward from the vehicle, and the impact bars 12 and 13 themselves are formed by this cross-sectional structure. The impact bars 12 and 13 are provided apart from each other in the vertical direction so that the load input at the time of a side collision can be handled in a wide range in the vertical direction.
[0037]
FIG. 9 is an enlarged cross-sectional view of a main part along the line EE in FIG. 4, and a lower end portion on the rear side of the front door 2 protrudes from the front door 2 toward the side sill outer 35 of the side sill 34 on the vehicle body side. A catcher pin 36 protruding in a shape is provided.
[0038]
That is, a nut 37 is welded and fixed in advance to the extension 33 at the lower end of the front door rear reinforcement 31 described above, and the threaded portion of the catcher pin 36 is attached to the extension 33 and the door inner panel 22 facing the nut 37. A hole to be inserted is formed, and the above-described catcher pin 36 is fastened and fixed to the nut 37 from the vehicle interior side of the door inner panel 22.
[0039]
The catcher pin 36 described above restricts the intrusion of the front door 2 at the time of a side collision of the vehicle. The side sill outer 35 is made of synthetic resin and has a concave catcher at a position corresponding to the catcher pin 36. A pin receiving portion 38 is provided so that the above-described catcher pin 36 is inserted into the catcher pin receiving portion 38 when the front door 2 is closed.
[0040]
FIG. 9 is a sectional view of the front door 2 when the front door 2 is fully closed. The inner diameter of the catcher pin receiving portion 38 is set to be relatively larger than the outer diameter of the catcher pin 36. Further, the catcher pin 36 described above is a door intrusion restricting member for restricting the intrusion of the front door 2 at the time of a side collision of the vehicle.
[0041]
The catcher pins are provided not only at the front door 2 but also at the lower part of the rear door 3 as shown in FIGS. 1 and 2, and the catcher pins 36, 39, 40 are arranged in the front-rear direction at substantially equal intervals. ing.
[0042]
On the other hand, in FIG. 9, a seal member 41 that seals between the vehicle body and the front door 2 is provided on the outer surface of the upper end portion of the side sill outer 35, and the front door 2 is disposed below the door inner panel 22 of the front door 2. And a side sill 34 as a vehicle body.
[0043]
10 is a side view showing the right rear door 3 as viewed from the vehicle interior side, FIG. 11 is a cross-sectional view taken along line GG in FIG. 10, and FIG. 12 is a cross-sectional view taken along line HH in FIG. As shown in FIGS. 10 and 11, an opening 45 for attaching the bracket 44 of the seat belt retractor 43 is formed in a predetermined portion of the inner panel 27 at the lower portion of the rear door 3.
[0044]
Further, as shown in FIGS. 3, 10, and 11, a vertical reinforcement 46 extending in the vertical direction is disposed on the front vertical side portion of the rear door 3 over substantially the entire height including the door sash portion 9 of the rear door 3. Has been.
[0045]
The vertical reinforcement 46 is formed of a light metal or light alloy thick plate member such as aluminum or aluminum alloy, and as shown in FIG. 3, a front piece 46a extending in the front-rear direction of the vehicle at the front side of the vehicle. A front piece 46b extending in the vehicle width direction from the rear end of the front piece 46a, a side piece 46c extending rearward in the vehicle front-rear direction from the outer end of the front piece 46b, and a vehicle from the rear end of the side piece 46c. The rear surface piece 46d extends rearward in the front-rear direction and inward in the vehicle width direction, and has a substantially hat-shaped cross section so as to have a rear piece 46e extending rearward in the front-rear direction of the vehicle from the inner end of the rear surface piece 46d. .
[0046]
The front piece 46a is sandwiched and fixed between the door inner panel 27 and the door outer panel 28, and the striker 29 is attached to the portion where the front piece 46b and the door outer panel 28 overlap. The rear piece 46e is joined to the inner surface of the door inner panel 27 in the front-rear direction intermediate portion.
[0047]
Further, as shown in FIG. 3, a hinge reinforcement 47 as a rigid member extending along the vertical direction of the rear door 3 is disposed on the rear vertical side portion of the rear door 3.
[0048]
The hinge reinforcement 47 includes a front piece 47a extending in the front-rear direction of the vehicle on the inner side of the vehicle, a rear piece 47b extending in the front-rear direction of the vehicle on the outer side of the vehicle, and the two pieces 47a, 47b. And a connection piece 47c extending in the shape of a thick metal member of light metal such as aluminum or aluminum alloy or light alloy, and having a substantially Z-shaped cross section.
[0049]
3, 10, and 11, the above-described lateral impact bar 14 is provided between the side piece 46 c of the vertical reinforcement 46 and the rear piece 47 b of the hinge reinforcement 47, that is, between the rigid members. Are fixed so as to extend in the front-rear direction. In other words, the lateral impact bar 14 is provided so that both front and rear end portions thereof overlap with the vertical reinforcement 46 and the hinge reinforcement 47, and this overlapping structure improves the rigidity against the side collision of the rear door 3. It is comprised so that it may aim.
[0050]
Further, the above-described lateral impact bar 14 is formed in a concavo-convex shape as shown in a cross-sectional shape in FIG. 11, and this concavo-convex structure is configured to improve the rigidity of the lateral impact bar 14 itself.
[0051]
As shown in FIG. 10, the rear door 3 described above is formed such that the front vertical side portion thereof is inclined rearward. The front upper corner portion 3U (front upper corner portion) of the front vertical side portion and the front lower corner portion are formed. A vertical impact bar 48 extending substantially vertically in the vertical direction is provided between a portion spaced from the portion 3D (front lower corner portion).
[0052]
The longitudinal impact bar 48 is formed of a high-tensile steel pipe member (rigid pipe member).
As shown in FIG. 10, the vertical reinforcement 46 described above is disposed so as to overlap with the longitudinal impact bar 48 in the front-rear direction of the vehicle in a side view. More specifically, as shown in FIG. 3, a closed section 49 is formed between the above-described vertical reinforcement 46 and the door inner panel 27 of the rear door body 7, and the vertical impact bar 48 is formed inside the closed section 49. It is arranged.
[0053]
Further, as shown in FIGS. 3 and 10, the front portion of the lateral impact bar 14 described above is disposed so as to overlap the longitudinal impact bar 48 in the longitudinal direction of the vehicle.
In addition, as shown in FIG. 3, the front door 2 and the rear door 3 are shown in a closed state, and when the doors 2 and 3 are closed, the front door rear reinforcement 31 is a vertical rain provided on the front vertical side of the rear door 3. Arranged so as to overlap with the force 46, this overlapping structure is designed to improve the rigidity of the overlapping portion and reduce the amount of the side door entering the vehicle compartment at the time of a side collision.
[0054]
By the way, as shown in FIG. 11, a door latch reinforcement 50 having a concave cross section is provided in the lower portion of the rear door 3.
The door latch reinforcement 50 is fixed to the lower portion of the vertical reinforcement 46 by using a rivet 51 (attachment member) while the vehicle interior rising piece is attached to an inner rising piece using bolts, nuts, rivets and the like. The bracket 44 and the lower end bracket 55 of the vertical impact bar 48 to be described later are fixed to the door inner panel 27 together.
[0055]
The vertical impact bar 48 described above is fixed to the vertical reinforcement 46 and the door inner panel 27 using an upper end bracket 53, an intermediate bracket 54, and a lower end bracket 55 as shown in FIGS.
[0056]
Here, the upper end bracket 53 is composed of two members, an external bracket 57 having a holding part 56 having a substantially semicircular cross section and an internal bracket 59 having a holding part 58 having a substantially semicircular cross section. Are joined to hold the upper end of the vertical impact bar 48, the outer bracket 57 is fixed to the upper part of the vertical reinforcement 46 using a rivet 60 (attachment member), and the inner bracket 59 is made of bolts, nuts, etc. Attached to the door inner panel 27 together with the door latch 17 and an anchor bracket 62 for a shoulder belt anchor using mounting members 61.
[0057]
Further, the intermediate bracket 54 includes a holding portion 63 having a substantially semicircular cross section, an upper mounting piece 64, and a lower mounting piece 65, and as shown in FIG. The upper mounting piece 64 is fixed to the door inner panel 27 together with the bracket 44 using a mounting member 66 such as a bolt or a nut, and the lower mounting piece 65 is laterally fixed using a rivet 67 (mounting member). The impact bar 14 and the vertical reinforcement 46 are fastened together.
[0058]
That is, the vertical middle portion of the vertical impact bar 48 is supported by the intermediate bracket 54 connected to both the vertical reinforcement 46 and the door inner panel 27. Further, the lateral impact bar 14, the vertical reinforcement 46, and the intermediate bracket 54 are fastened and fixed together by the rivet 67 described above.
[0059]
Further, the lower end bracket 55 includes a holding portion 68 having a substantially semicircular cross section and front and rear mounting pieces 69, 70. The holding portion 68 holds the lower end portion of the vertical impact bar 48 and the front and rear mounting pieces 69, 70. Are fixed to the door inner panel 27 together with the door latch reinforcement 50 and the bracket 44 by using mounting members 52 such as bolts, nuts and rivets.
The predetermined portions of the upper end bracket 53, the intermediate bracket 54, and the lower end bracket 55 are fixed to the outer peripheral portion of the vertical impact bar 48 by welding.
[0060]
Here, as shown in FIG. 11, the locking mechanism of the rear door 3, that is, the upper door latch 17 and the lower door latch 18 are attached to the upper and lower ends of the vertical impact bar 48. Specifically, the upper door latch 17 is attached to the upper end of the vertical impact bar 48 via an internal bracket 59, and the lower door latch 18 has a lower end bracket 55 and a door latch reinforcement 50 at the end of the vertical impact bar 48. Is attached via.
[0061]
In FIG. 11, a roof rail outer 72 and a roof rail inner 73 are joined to the side portion of the roof panel 71 on the vehicle body upper side, and the striker 19 is attached to the roof rail inner 73.
[0062]
Further, a side sill 34 including a side sill inner 75 and a side sill outer 35 is joined to a side portion of the floor panel 74 at the lower side of the vehicle body, and the striker 20 is attached to a predetermined portion of the side sill outer 35 described above. The door latches 17 and 18 attached to the upper and lower ends of the vertical impact bar 48 of the rear door 3 are engaged with the strikers 19 and 20 on the vehicle body side.
[0063]
In the above description, the structures of the right front door 2 and the rear door 3 are mainly described. However, the left front door 2 and the rear door 3 are configured symmetrically with those on the right side. In the figure, F indicates the front of the vehicle, R indicates the rear of the vehicle, IN indicates the inside of the vehicle, and OUT indicates the outside of the vehicle.
[0064]
As described above, the vehicle side door structure of the embodiment shown in FIGS. 1 to 13 has a continuous door opening (refer to the center pillar-less door opening 15) without a partition on the side of the vehicle, and the front part on the front of the vehicle body. A side door structure of a vehicle having a double door structure that is openably and closably covered by a front door 2 pivotably attached via a door hinge 4 and a rear door 3 provided behind the front door 2. The vertical impact bar 48 is formed so that the front vertical side portion 3 of the rear door 3 is inclined rearward and extends substantially vertically between the front upper corner portion 3U of the rear door 3 and the portion separated from the front lower corner portion 3D. Is arranged.
[0065]
According to this configuration, since the vertical impact bar 48 extending in the vertical direction is disposed substantially vertically at the front portion of the rear door 3, the rigidity against the side collision is improved, and the amount of penetration of the rear door 3 into the vehicle interior at the time of the side collision is improved. Can be reduced, and the safety of passengers can be improved.
[0066]
The vertical impact bar 48 is constituted by a rigid pipe member.
According to this configuration, since the vertical impact bar 48 is configured by the rigid pipe member, it is possible to improve the rigidity against the side collision without causing an excessive increase in weight.
[0067]
In addition, a vertical reinforcement 46 extending in the vertical direction along the front vertical side portion is disposed on the front vertical side portion of the rear door 3.
[0068]
According to this structure, the rigidity with respect to a side collision can be further improved by the synergistic effect of the vertical reinforcement 46 provided in the front vertical side part of the rear door 3, and the vertical impact bar 48 mentioned above.
[0069]
Further, as shown in FIG. 10, the vertical reinforcement 46 is disposed so as to overlap with the longitudinal impact bar 48 in the front-rear direction of the vehicle as viewed from the side.
According to this configuration, the overlap structure between the vertical reinforcement 46 and the vertical impact bar 48 further improves the rigidity against the side collision.
[0070]
The vertical reinforcement 46 forms a closed section 49 with the rear door body 7 (refer to the door inner panel 27 for details), and the vertical impact bar 48 closes between the vertical reinforcement 46 and the rear door body 7. It is disposed inside the cross section 49.
[0071]
According to this configuration, the rigidity against the side collision is further improved by the above-described closed cross-sectional structure, and the vertical impact bar 48 is disposed inside the closed section 49, so that the rigidity against the side collision can be further improved. .
[0072]
In addition, a lateral impact bar 14 extending in the longitudinal direction of the vehicle is disposed so as to overlap the longitudinal impact bar 48 in the longitudinal direction.
According to this configuration, the rigidity with respect to the side collision is further improved by the above-described overlap structure, and bending deformation of the rear door 3 at the time of the side collision can be prevented.
[0073]
The front end portion of the lateral impact bar 14 is joined to a vertical reinforcement 46.
According to this structure, the rigidity with respect to a side collision can be further improved by the above-mentioned joining structure.
[0074]
Further, the vertical middle portion of the vertical impact bar 48 is supported by a bracket (see the middle bracket 54) connected to both the vertical reinforcement 46 and the door inner panel 27 as shown in FIG. It is a thing.
According to this configuration, the support rigidity of the vertical impact bar 48 can be improved.
[0075]
In addition, the lateral impact bar 14, the vertical reinforcement 46, and a bracket (see the intermediate bracket 54) are fixed together.
According to this configuration, it is possible to improve these assembling properties and to improve the rigidity thereof by the above-described three-part joint fixing structure.
[0076]
In addition, a lock mechanism (see door latches 17 and 18) that can be engaged and disengaged with respect to the vehicle body is provided at both the upper and lower parts of the rear door 3, and the front part of the rear door 3 can be engaged and disengaged with respect to the rear part of the front door 2. A lock mechanism (see striker 29) is provided.
[0077]
According to this configuration, the rear door 3 is locked to the vehicle body and the front door 2 by the above-described lock mechanisms (see the door latches 17 and 18 and the striker 29). It is possible to further reduce the amount of intrusion of 2 and 3 into the vehicle interior.
[0078]
Further, the locking mechanism (see the door latches 17 and 18) of the rear door 3 is attached to the upper and lower ends of the vertical impact bar 48.
According to this configuration, since the locking mechanism (see the door latches 17 and 18) on the rear door 3 side is attached to both ends of the rigid vertical impact bar 48, the support rigidity of the rear door 3 with respect to the vehicle body is improved and the side collision is improved. This is also an advantageous structure.
[0079]
FIG. 14 shows another embodiment of the side door structure of the vehicle, in which a plurality of lateral impact bars 14, 76 provided inside the rear door 3 are spaced apart in the vertical direction. The upper lateral impact bar 76 is disposed so as to extend in the front-rear direction of the vehicle at a height position substantially equal to the impact bar 12 in the front door 2.
[0080]
As described above, when the plurality of lateral impact bars 14 and 76 are provided in the rear door 3 so as to be spaced apart from each other in the vertical direction, the door rigidity can be further improved and the load input at the time of a side collision can be increased in a wide range in the vertical direction. Since it can respond, the safety of passengers is further improved.
[0081]
In this embodiment shown in FIG. 14 as well, the other configurations, operations, and effects are almost the same as those of the previous embodiment. Therefore, in FIG. Description is omitted.
[0082]
In the correspondence between the configuration of the present invention and the above-described embodiment,
The bracket of the present invention corresponds to the intermediate bracket 54 of the embodiment,
Similarly,
The locking mechanism for the upper and lower parts of the rear door corresponds to the door latches 17 and 18,
The locking mechanism at the front of the rear door corresponds to the striker 29,
The continuous door opening without partitioning on the vehicle side corresponds to the center pillar-less door opening 15,
The present invention is not limited to the configuration of the above-described embodiment.
[0083]
【The invention's effect】
According to the present invention, in the vehicle side door structure, the front vertical side portion of the rear door is formed to be inclined rearward, and the vertical space is formed in the internal space sandwiched between the outer panel and the inner panel of the rear door front vertical side portion. Reinforcement and vertical impact bar are arranged, and both of them are overlapped in side view, and the vertical impact bar extends vertically between the front upper corner of the rear door and the part separated from the front lower corner. Since it is provided so as to extend substantially vertically, the side door with a double door structure has improved rigidity against side collisions, and the amount of entry of the door into the vehicle compartment during side collisions can be reduced, improving occupant safety. There is an effect that can be achieved.
[Brief description of the drawings]
FIG. 1 is a side view showing a side door structure of a vehicle according to the present invention.
FIG. 2 is a side view showing the side door as viewed from the vehicle interior side.
3 is a cross-sectional view taken along line AA in FIG.
FIG. 4 is a side view of the front door.
5 is a cross-sectional view taken along line BB in FIG.
FIG. 6 is a perspective view of a front door rear reinforcement.
7 is a cross-sectional view taken along line DD in FIG.
8 is a cross-sectional view taken along the line CC of FIG.
FIG. 9 is an enlarged cross-sectional view of a main part taken along line EE in FIG.
FIG. 10 is a side view of the rear door.
11 is a cross-sectional view taken along line GG in FIG.
12 is an enlarged cross-sectional view taken along the line HH in FIG.
FIG. 13 is an exploded perspective view of a vertical impact bar and its mounting bracket.
FIG. 14 is a sectional view showing another embodiment of the side door structure for a vehicle according to the present invention.
[Explanation of symbols]
2 ... Front door
3 ... Rear door
3U ... Front upper corner
3D ... lower front corner
4, 5 ... Hinge
7 ... Rear door body
14 ... Lateral impact bar
15 ... Door opening (opening)
17, 18 ... Door latch (locking mechanism)
19 ... striker
26, 28 ... Door outer panel
27 ... Door inner panel
29 ... striker (lock mechanism)
46 ... Vertical reinforcement
48 ... Vertical impact bar
49 ... Closed section
54 ... Intermediate bracket (bracket)

Claims (9)

A continuous door opening without partitioning on the side of the vehicle is covered with a front door whose front part is pivotally attached to the vehicle body via a hinge and a rear door provided behind the front door. Vehicle side door structure,
The front vertical side portion of the rear door is formed to be inclined rearward,
A vertical reinforcement bar and a vertical impact bar are disposed in the inner space sandwiched between the outer panel and the inner panel on the vertical side of the front part of the rear door,
The vertical reinforcement and vertical impact bar are arranged to overlap in side view,
The vertical reinforcement extends above and below the upper and lower ends of the vertical impact bar,
The upper and lower ends of the vertical reinforcement are provided so as to overlap the vehicle body side member in side view,
A striker is provided at a position overlapping the upper end of the vertical reinforcement of the vehicle body side member, and the vertical impact bar moves up and down between the front upper corner and the front lower corner of the rear door. Extending substantially perpendicular to the direction,
A side door structure for a vehicle, wherein a door latch member that engages with the striker is attached above an upper end of the vertical impact bar. A continuous door opening without partitioning on the side of the vehicle is covered with a front door whose front part is pivotally attached to the vehicle body via a hinge and a rear door provided behind the front door. Vehicle side door structure,
The front vertical side portion of the rear door is formed to be inclined rearward,
A vertical impact bar extending substantially vertically between the front upper corner of the rear door and the portion spaced from the front lower corner is disposed in a vertical direction.
A vertical reinforcement extending in the vertical direction along the front vertical side portion is disposed on the front vertical side portion of the rear door,
An intermediate portion in the vertical direction of the longitudinal impact bar, said vertical reinforcement and the side door structure of a vehicle which is supported by a bracket which is connected to both the door inner panel. The side door structure for a vehicle according to claim 1, wherein the vertical impact bar is formed of a rigid pipe member. The vertical reinforcement forms a closed section with the rear door body,
The side door structure for a vehicle according to claim 1 or 2, wherein the vertical impact bar is disposed inside a closed cross section between a vertical reinforcement and a rear door main body. The side door structure for a vehicle according to claim 1 or 2, wherein a lateral impact bar extending in the front-rear direction of the vehicle is disposed so as to overlap the vertical impact bar in the front-rear direction. 6. The vehicle side door structure according to claim 5, wherein a front end portion of the lateral impact bar is joined to a vertical reinforcement. The side door structure for a vehicle according to claim 2, wherein the lateral impact bar, the vertical reinforcement, and the bracket are fixed together. The upper and lower parts of the rear door are provided with lock mechanisms that can be engaged with and disengaged from the vehicle body
The side door structure for a vehicle according to any one of claims 1 to 7, wherein a lock mechanism that can be engaged and disengaged with respect to a rear portion of the front door is provided at a front portion of the rear door. The vehicle side door structure according to claim 8, wherein the rear door locking mechanism is attached to both upper and lower ends of the vertical impact bar.

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