JP4585350B2 - Vehicle body structure - Google Patents

Description

  The present invention relates to a vehicle body structure in the vicinity of right and left rockers and right and left cross members in a vehicle such as a passenger car or a commercial vehicle.

In rear-wheel drive type and four-wheel drive type vehicles, a transmission shaft that transmits power to the rear wheels is provided on the floor along the longitudinal direction of the vehicle body.
In this case, for example, as disclosed in Patent Document 1, the right and left lockers (16 of Patent Documents 1, 4 and 5 of FIG. And the left cross member (28, 30a, 30b in FIGS. 3, 4 and 5 of Patent Document 1) are connected, and a transmission shaft (12a in FIGS. 3, 4, and 5 in Patent Document 1) is connected to the rear wheel. 12b) is supported by a bearing portion (26 in FIGS. 3, 4 and 5 of Patent Document 1), and the right and left cross members are connected to the bearing portion.
Thus, for example, when a side collision occurs, the impact of the collision occurs from the right (left) rocker and the right (left) cross member through the bearing portion to the left (right) cross member and the left (right) rocker. Will be transmitted to.

  In Patent Document 1, the right cross member (28, 30a, 30b in FIGS. 3, 4, and 5 of Patent Document 1) moves the bearing portion (26 in Patent Document 1, FIGS. 3, 4, and 5) from right to left. Passing through, it is connected to the left side of the bearing (26a in FIGS. 3, 4 and 5 of Patent Document 1). Similarly, the left cross member passes through the bearing portion from the left to the right and is connected to the right portion of the bearing portion (26b in FIGS. 3, 4, and 5 of Patent Document 1). Thereby, in the bearing portion, the right and left cross members (28 in FIGS. 3, 4 and 5 of Patent Document 1) are shifted forward and backward (see FIG. 4 of Patent Document 1).

Japanese Patent Laid-Open No. 7-277227 (FIGS. 1, 3, 4, and 5)

  In general, in a vehicle, the right and left cross members are assembled in advance on the floor, and then the transmission shaft and the bearing portion are often assembled on the floor. As a result, as in Patent Document 1, the right (left) cross member passes through the bearing portion from right to left (left to right) and is connected to the left side portion (right side portion) of the bearing portion. In this case, it is often a relatively difficult task to assemble the transmission shaft and the bearing portion on the floor in a state where the right and left cross members are pre-assembled on the floor.

  In Patent Literature 1, the right and left cross members are displaced forward and backward in the bearing portion. Thereby, for example, when a side collision from the right occurs, if the impact of the collision is transmitted from the right rocker and the right cross member to the bearing portion, the impact of the collision is not transmitted to the left cross member as it is. While the bearing portion is twisted (in FIG. 4 of Patent Document 1, the bearing portion 26 tries to rotate counterclockwise), it can be considered that the bearing portion is transmitted to the left cross member.

  In the vehicle body structure of a rear-wheel drive type or four-wheel drive type vehicle, the present invention makes it possible to relatively easily assemble the transmission shaft and the bearing portion to the floor. Is intended to be transmitted without difficulty from the right cross member to the left cross member (or from the left cross member to the right cross member).

[I]
(Constitution)
The first feature of the present invention resides in the following structure in the vehicle body structure of the vehicle.
A transmission shaft for transmitting power to the rear wheels is provided on the floor along the longitudinal direction of the vehicle body, and a bearing portion for supporting the transmission shaft is provided in the middle portion of the transmission shaft. A right and left rocker disposed in the vehicle longitudinal direction across the lower part of the door, and a right and left cross member coupled to the right and left rocker and disposed in the vehicle lateral direction. Face each other across between the right and left vehicle body inner side of the end bearings of the cross member of, and right and between the right and the end portion of the vehicle body inner side of the cross member of the left and the bearing portion A horizontally long connecting member connected to the lower portion of the bearing portion is connected across the lower portions of the inner side ends of the right and left cross members so that a predetermined left interval is formed . The right and flexibility of the left and right and left cross member and the bearing part to allow the state to be displaced in the disappearance direction of the right and left of a predetermined interval, the right and left cross member of the vehicle body inner side of the end portion It is provided at a connecting portion between the lower portion and the connecting member . The right and left interchangeable portions are formed on the right and left sides of the connecting member along the left-right direction of the vehicle body, and the interchangeable length of the right interchangeable portion is set to be larger than the predetermined gap on the right, The accommodation length of the accommodation portion is set to be larger than the left predetermined gap.

(Function)
According to the first feature of the present invention, in the state where the right and left cross members are pre-assembled on the floor, the space between the ends of the right and left cross members on the vehicle body inner side is open (the bearing portion). The interval of the width plus a certain interval).
As a result, the transmission shaft and the bearing portion can be assembled to the floor relatively easily without being obstructed by the ends of the right and left cross members inside the vehicle body. Connecting the end part of the right and left cross members on the inner side of the vehicle body and the connecting member connected to the lower part of the bearing part with a predetermined interval between the end part on the inner side of the vehicle body and the bearing part. It is Ru can.

According to the first feature of the present invention, the end portions of the right and left cross members on the vehicle body inner side face each other with the bearing portion interposed therebetween, and the right and left cross members on the vehicle body inward side ends. The end portions of the right and left cross members on the vehicle body inner side and the connecting member connected to the lower portion of the bearing portion are connected to each other with a predetermined interval between the connecting portion and the bearing portion . An interchangeable portion is provided that allows a state in which the right and left cross members and the bearing portion are displaced in the disappearing direction at a predetermined interval.

  Thus, according to the first feature of the present invention, for example, when a side collision from the right occurs, the impact of the collision is received by the right rocker and the right cross member and transmitted from the right cross member to the bearing portion. Then, the predetermined distance between the end portion of the right cross member on the vehicle body inner side and the bearing portion disappears due to the action of the interchangeable portion, and the end portion of the right cross member on the vehicle body inner side becomes the bearing portion. Directly hit, the predetermined distance between the end of the left cross member on the vehicle body inward side and the bearing portion disappears due to the action of the interchangeable portion, and the bearing portion reaches the end of the left cross member on the vehicle body inward side. It will be in a state that hits directly.

  Therefore, according to the first aspect of the present invention, for example, when a side collision occurs, the impact of the collision is caused from the end of the right (left) cross member to the left (right) via the bearing portion from the inner side of the vehicle body. It is transmitted without difficulty to the end of the cross member on the inner side of the vehicle body, and is transmitted from the left (right) cross member to the left (right) rocker. The impact of the collision is left (right) while the bearing is twisted. ) Is not likely to be transmitted to the inner end of the cross member.

(The invention's effect)
According to the first aspect of the present invention, the end portions of the right and left cross members on the vehicle body inward side are provided with a predetermined interval between the end portions on the vehicle body inward side of the right and left cross members and the bearing portions. And the connecting member connected to the lower part of the bearing part , the transmission shaft and the bearing part are relatively easy to the floor with the right and left cross members assembled in advance on the floor. As a result, the productivity in the vehicle body structure of the vehicle can be improved.

  According to the first feature of the present invention, for example, when a side collision occurs, the impact of the collision is detected from the end of the right (left) cross member on the inner side of the vehicle body via the bearing portion to the left (right) cross member. By constructing it so that it can be transmitted without difficulty to the inner side of the vehicle body, the impact of the collision is distributed to the right rocker and right cross member, left rocker and left cross member without any difficulty. It became possible to improve the protection function of the passenger compartment.

[II]
(Constitution)
The second feature of the present invention resides in the following structure in the vehicle body structure of the vehicle of the first feature of the present invention.
The bases of the right and left center pillars are connected in the vicinity of the connecting portions of the right and left cross members in the right and left rockers.

(Function)
According to the second feature of the present invention, the “action” described in the preceding item [I] is provided in the same manner as the first feature of the present invention, and in addition to this, the following “action” is provided.
According to the second feature of the present invention, for example, when a side collision from the right occurs, the impact of the collision is received by the right center pillar in addition to being received by the right rocker and the right cross member. In addition to the impact of the collision being transmitted from the left cross member to the left rocker, it is transmitted without difficulty to the left center pillar.

(The invention's effect)
According to the second feature of the present invention, the “effect of the invention” described in the preceding item [I] is provided in the same manner as the first feature of the present invention. In addition, the following “effect of the invention” is provided. ing.
According to the second aspect of the present invention, for example, when a side collision occurs, the impact of the collision is received by the right (left) rocker and the right (left) cross member, and the right (left) center pillar. In addition to being able to be received without difficulty, the impact of the collision is transmitted from the right (left) cross member to the right (left) rocker, and also to the right (left) center pillar. This makes it possible to improve the protection function of the passenger compartment.

  FIG. 1 and FIG. 2 show a rear-wheel drive type or a four-wheel drive type four-door type passenger car, which is provided with a panel-like floor 1 and an upward convex floor tunnel 2 is a vehicle body center of the floor 1 Is formed along the vehicle body longitudinal direction. The right and left rockers 3 along the vehicle front-rear direction across the lower part of the door 15 are connected to the right and left side parts of the floor 1 by welding. The right and left center pillars 4 are connected by welding and extend upward. Channel-shaped right and left side members 5 are connected to the lower portions of the right and left rocker 3 on the floor 1 by welding along the longitudinal direction of the vehicle body.

  As shown in FIGS. 1, 2, and 3, across the inner side of the front and rear center of the right and left rocker 3 (the lateral side of the connecting portion of the right and left center pillars 4) and the floor tunnel 2, The right and left cross members 6 are connected by welding, and the right and left cross members 6 are divided into an outrigger 7 and an inner rigger 8.

  As shown in FIGS. 1, 2, and 3, the outrigger 7 is configured in a channel shape, and is an inner portion of the front and rear center portions of the right and left rockers 3 (the lateral side portion of the connecting portion of the right and left center pillars 4). ) And the right and left side members 5 are connected by welding, and are connected to the lower part of the floor 1 by welding. The inner rigger 8 is configured in a channel shape, and is connected to the right and left side members 5 and the floor tunnel 2 by welding, and is connected to the lower portion of the floor 1 by welding. A nut 14 is fixed to the lower part of the end 8a on the vehicle body inward side of the right and left cross members 6 (inner rigger 8) by welding. In the right and left cross members 6, the outrigger 7 and the inner rigger 8 are linearly arranged in the left-right direction of the vehicle body in plan view (see FIG. 1), and in the floor tunnel 2, the right and left cross members 6 (inner The end portion 8a of the rigger 8) on the vehicle body inner side faces each other.

As shown in FIGS. 1, 2, 3, and 4, a transmission shaft 10 that transmits power to the rear wheel 9 is provided below the floor tunnel 2 along the longitudinal direction of the vehicle body. A joint 11 is provided at an intermediate portion of the transmission shaft 10, and a portion slightly ahead of the joint 11 is supported by the bearing portion 12. As shown in FIGS. 5 and 6, a horizontally long connecting member 13 is connected to the lower portion of the bearing portion 12 by welding, and the right and left along the longitudinal direction of the connecting member 13 (the left-right direction in the plane of the paper). Are formed in the right and left side portions of the connecting member 13.

As shown in FIGS. 1, 3, and 5, in a state where the end portions 8 a on the vehicle body inward side of the right and left cross members 6 (inner rigger 8) are opposed to each other, The inner rigger 8) is inserted between the end portions 8a of the inner side of the vehicle body, and the bolts 16 are inserted into the right and left elongated holes 13a of the connecting member 13 and tightened to the nuts 14, and the right and left cross members 6 (inner rigger 8) is connected to the end portion 8a on the vehicle body inward side and the connecting member 13.

In this case, as shown in FIG. 5, the bolt 16 is located at the right end of the right long hole 13 a of the connecting member 13, and the bolt 16 is located at the left end of the left long hole 13 a of the connecting member 13. . Between the end portion 8a of the vehicle body inner side and the connecting member 13 of the right cross member 6 (inner trigger 8), and, connected to the end portion 8a of the vehicle body inner side of the left cross member 6 (inner trigger 8) A predetermined interval L1 is formed between the member 13 and the length of the right and left long holes 13a of the connecting member 13 is set to be sufficiently larger than the predetermined interval L1.

Thus, in the state shown in FIGS. 1, 2, 3, and 5, for example, when a side collision from the right occurs, the impact of the collision is received by the right rocker 3, the right cross member 6, and the right side member 5. The center pillar 4 on the right is also accepted. When the impact of the collision is transmitted from the right cross member 6 to the bearing portion 12 and the connecting member 13, the right bolt 16 moves along the right long hole 13a of the connecting member 13 on the vehicle body inward side (left side in FIG. 5). And the end 8a on the vehicle body inner side of the right cross member 6 (inner rigger 8) directly contacts the bearing 12 (a state in which the predetermined interval L1 has disappeared). Further, the left elongated hole 13a of the connecting member 13 moves along the left bolt 16 to the outside of the vehicle body (left side of the drawing in FIG. 5), and the vehicle body inward of the left cross member 6 (inner rigger 8). The side end portion 8a directly contacts the bearing portion 12 (a state in which the predetermined interval L1 has disappeared).

  In this case, as shown in FIGS. 1, 2, 3 and 5, the end portions 8a of the right and left cross members 6 (inner riggers 8) on the vehicle body inner side face each other with the bearing portion 12 therebetween. Therefore, the impact of the collision is caused in the vehicle body of the left cross member 6 (inner rigger 8) from the inner end 8a of the right cross member 6 (inner rigger 8) through the bearing 12 through the bearing portion 12. It is transmitted without difficulty to the side end 8a, and is transmitted from the left cross member 6 to the left side member 5 and the left rocker 3, and is also transmitted to the left center pillar 4 without difficulty.

[Another Embodiment of the Invention]
Instead of the right and left long holes 13a of the connecting member 13 in the above-mentioned [Best Mode for Carrying Out the Invention], as shown in FIG. 7, right and left round holes 13b are formed in the connecting member 13. Further, an elongated slit 13c (corresponding to the interchangeable portion) may be formed from the right and left round holes 13b toward the bearing portion 12. As a result, the bolt 16 is inserted into the right and left round holes 13b of the connecting member 13 and fastened to the nut 14, and the end 8a on the vehicle body inward side of the right and left cross members 6 (inner rigger 8) and the connecting member. 13 is connected.

For example, when a side collision from the right occurs, when the impact of the collision is transmitted from the right cross member 6 to the bearing portion 12 and the connecting member 13, the right bolt 16 is moved from the right round hole 13 a of the connecting member 13 to the right. The slit 13c of the right cross member 6 (inner rigger 8) on the inner side end 8a of the right cross member 6 (inner rigger 8) is a bearing portion. 12 (a state in which the predetermined interval L1 has disappeared). Further, the left slit 13c of the connecting member 13 is pushed and expanded so as to enter the left bolt 16 and move to the outer side of the vehicle body (the left side in FIG. 7), and the left cross member 6 (inner rigger 8). ) Directly contacts the bearing portion 12 (a state in which the predetermined interval L1 has disappeared).

Plan view near the floor of the vehicle 1 is a cross-sectional view as seen from the direction AA. Longitudinal front view near the left locker, left side member, left cross member, transmission shaft and bearing 3 is a cross-sectional view seen from the BB direction Longitudinal front view of the right and left cross members near the inner side of the vehicle body, bearings, and floor tunnel Overall perspective view of bearing Whole perspective view of bearing part in another embodiment of the invention

DESCRIPTION OF SYMBOLS 1 Floor 3 Locker 4 Center pillar 6 Cross member 8a End part of the cross member inside the vehicle body 9 Rear wheel 10 Transmission shaft 12 Bearing portion
13 connecting member 13a, 13c interchangeable part 15 door L1 predetermined interval

Claims (2)

A transmission shaft that transmits power to the rear wheels is provided on the floor along the longitudinal direction of the vehicle body, and a bearing portion that supports the transmission shaft is provided in the middle portion of the transmission shaft.
E Bei the right and left of the rocker being arranged in the longitudinal direction of the vehicle body over the bottom of the door, and the right and the right and left cross member of which is disposed connected to the left locker in the lateral direction of the vehicle body,
Faces sandwiched between the end portion of the vehicle body inner side of the right and left cross members with the bearing portion, and a body inner side of the end portion of the right and left cross member of said bearing portion A horizontally long connecting member connected to the lower portion of the bearing portion is formed between the lower portions of the inner side ends of the right and left cross members so that a predetermined interval between the right and left is formed therebetween. Concatenate,
The right and the right and flexibility of the left and the cross member and the bearing portion of the left to allow the state to be displaced in the disappearance direction of the right and left of a predetermined interval, the vehicle body inner side of the right and left cross member of Prepared at the connecting portion between the lower part of the end of the connecting member and the connecting member,
The right and left interchangeable portions are formed on the right and left sides of the connecting member along the left-right direction of the vehicle body, and the interchangeable length of the right interchangeable portion is set to be larger than the predetermined gap on the right. In addition, the vehicle body structure of the vehicle in which the accommodation length of the left accommodation portion is set to be larger than the left predetermined gap . Body structure of the in the vicinity of the right and the coupling portion of the cross member of the left in the right and left of the rocker, as claimed in claim 1 which are connected to the base of the right and left of the center pillar vehicle.

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