KR20100081264A - Vehicle body structure - Google Patents

Abstract

PURPOSE: A vehicle body structure is provided to remove the need of installation of a separate passage pipe for wires and pipes because a center sill has crossing parts passing through a bolster and wires or pipe pass through the crossing parts. CONSTITUTION: A vehicle body structure comprises a bolster(5) and center sills(7a,7b). The bolster is installed in an underframe(1) in the width direction of a vehicle body. The center sill crosses the bolster and is installed to extend in the longitudinal direction of the vehicle body toward an end of the vehicle body. The center sill has crossing parts which are formed from the vehicle body end side to the vehicle body center side of the bolster. Wires or pipes passes through the inside of the crossing parts.

Description

Body structure {VEHICLE BODY STRUCTURE}

The present invention relates to a vehicle body structure having a bolster and a center sill intersecting the underframe. In particular, it relates to a vehicle body structure in which wiring and piping are laid under the floor.

In recent years, for the rolling stock, an aluminum alloy having excellent extrusion property, corrosion resistance and weldability has been developed. Therefore, in the railroad car, the vehicle body which effectively utilized the large shape material made of aluminum alloy currently becomes mainstream in light of weight reduction and rationalization of manufacture. In particular, the underframe constituting the bottom of the railroad vehicle needs to bear a large end compression load, and the body structure in which the underframe is made of a hollow extruded member made of aluminum alloy (hereinafter referred to as a hollow extruded member) which is advantageous in strength. Is designed. As such a vehicle body structure, the vehicle body structure of nonpatent literature 1 is mentioned, for example.

The vehicle body is composed of side structures, gable structures, roof structures and underframes. Among these, the underframe includes an end beam provided at both ends in the longitudinal direction of the vehicle body, a center room including a connector for connecting the end beam and connecting the vehicle, and a traveling device for railway vehicles. And a side beam provided at both ends in the width direction of the vehicle body, and a floor for providing a seat, and the like.

And in order to bear the above-mentioned blocking compressive load, the center chamber and the donor which are provided in the both-blocking part of the vehicle body longitudinal direction of the underframe are combined, and the large acting on the vehicle body via the connector provided in the center chamber is carried out. The vehicle body structure provided with the strength which can bear a load is employ | adopted.

As these vehicle body structure examples, the structure which welds a center chamber to the lower plate of a hollow extruded shape member is mentioned (refer patent document 1). Moreover, this applicant proposes the manufacturing method of the underframe which made it possible to manufacture the underframe comprised by the several shape member efficiently (refer patent document 2). Moreover, the vehicle body structure as described in the page 308 of said nonpatent literature 1 is mentioned as a structural example which bonded the lower surface of the hollow extruded shape member.

Conventionally, under the floor of a railway vehicle, various apparatuses, such as a power supply system, a control system, and a high-pressure air system, are installed in the state which complicatedly gathered. Under such a situation, although the wiring and piping which connect these apparatuses are arrange | positioned under the floor of a vehicle body, in particular around a trolley | bogie, the space for these wiring and piping cannot be fully secured. Through-tubes that route and route wiring and piping are effective means to simplify the subfloor structure. At present, through-pipes are provided in the barriers, and wiring and piping are allowed to extend through the through-tubes. However, it is not sufficiently considered to cope with the decrease in the rigidity and strength of the barriers and the increase in the number of parts and the manufacturing cost. .

14 to 16 show an example of a conventional vehicle body structure. 14 is a bottom view of a conventional vehicle body structure, and FIGS. 15 and 16 are E-E cross-sectional views and F-F cross-sectional views, respectively, of the vehicle body structure shown in FIG. This vehicle body structure has two center chambers 7, 7 arranged in the vehicle body width direction. In the underframe 1, 2 is the bottom, 3 is the side beam, 4 is the end beam, 5 is the donor, 6 is the air spring support, 8 is the connector support, 9 is the anti-rolling device support. The lower surface of the donation 5 is provided with the center pin base 20. An anti-rolling apparatus is a device for suppressing rolling vibration of a vehicle body, and is provided between the vehicle body and the bogie. On the lower surface of the bottom 2 of the underframe 1, wiring and piping 11 extending in the vehicle body longitudinal direction connecting the vehicle body end portion and the vehicle body central portion are arranged, and the wiring and piping 11 are arranged in a straight line. In order to prevent the volume from increasing in the vehicle body height direction, it is necessary to pass through the barrier 5 extending in the vehicle body width direction. The wiring and piping 11 are arrange | positioned through the through-pipe 15 provided in the barrier 5 separately. In particular, the donor 5 with the anti-rolling device base 9 which receives a high load from the anti-rolling device needs high rigidity and strength. For this reason, although it is preferable not to provide an opening part in the donation 5, the rigidity and intensity | strength of the donation 5 fall due to letting the through pipe 15 pass. The greater the number of through-pipes 15, the greater the tendency of stiffness reduction of the donor 5, and the closer the position of the through-tube 15 to the anti-rolling device support 9, the lower the strength of the donor 5. In addition, by installing the through pipe 15 and installing the reinforcing member due to the deterioration of the rigidity and strength of the donor 5, the number of parts increases, the bottom structure becomes complicated, and the bottom height becomes large. , Manufacturing costs rise.

[Patent Document 1]

JP-A 57-56929

[Patent Document 2]

Japanese Patent No. 3624527

[Non-Patent Document 1]

Weight reduction of aluminum alloys and vehicles (1990, issued by Nihon Aluminum Federation), pp. 308, pp. 320 to 368

SUMMARY OF THE INVENTION An object of the present invention is to facilitate laying of wiring or pipes through an impediment in a vehicle body structure in which various devices and wirings or pipes connecting them are arranged under the floor of the vehicle body, thereby increasing component scores and manufacturing costs. It is to provide a vehicle body structure that can solve the problems of the conventional vehicle body structures such as the above and at the same time efficiently secure the stiffness and strength of the obstruction.

MEANS TO SOLVE THE PROBLEM In order to solve the said subject, the vehicle body structure by this invention is a vehicle body structure provided with the provision provided in the underframe in the vehicle body width direction, and the center chamber which intersected the said provision and extended in the vehicle body longitudinal direction toward the vehicle body end side. In the center chamber, the center chamber has an intersection that passes through and intersects from the end of the vehicle body to the center of the vehicle body, and the intersection of the center chamber has a partition wall extending along a diagonal line in a cross section perpendicular to the longitudinal direction. It is characterized by an angled cylindrical shape member.

Since the vehicle body structure according to the present invention has an intersection where the center chamber penetrates through the donor and intersects, and is used as a penetrating portion through which wiring or piping passes through the internal space of the intersection, a pipe dedicated for conventional wiring and piping is used. It eliminates the need for a customs clearance, and at the same time loads the load on the anti-rolling device support into the partition wall installed along the diagonal line in the center room, so that a reinforcement member is installed to secure the rigidity and strength of the barrier. It may be unnecessary to increase the thickness of the center room.

According to the vehicle body structure of the present invention, since the center chamber has an intersection portion that passes through an obstruction, and is used as a penetration portion that allows wiring and piping to pass through the interior space of the intersection portion, the pipe for dedicated wiring and piping is conventional. In order to secure the rigidity and strength of the barrier, there is no need to install a clearance, and at the same time, the load applied to the anti-rolling device support is applied to the partition wall installed along the diagonal line in the longitudinal vertical section of the center chamber. There is no need to install reinforcing members or to increase the thickness of the center chamber. Therefore, it is easy to lay the wiring and piping through the barrier, and solve the problems of the conventional vehicle body structure such as the increase in the number of parts and the manufacturing cost, and secure the rigidity and strength of the barrier efficiently. have.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of the vehicle body structure by this invention is described based on an accompanying drawing. 1: is a bottom view (FIG. Which looked at the lower surface of the vehicle body from the bogie side) which shows one Embodiment of the vehicle body structure by this invention, FIG. 2 is AA sectional drawing of the vehicle body structure shown in FIG. 1, FIG. 3 is shown in FIG. BB sectional view of the vehicle body structure. The vehicle body structure shown in FIGS. 1-3 has two center chambers similarly to the vehicle body structure shown in FIGS. 14-16. In FIG. 1, the vehicle body structure is shown as a partial view including one end portion in the longitudinal direction.

In the vehicle body structure shown in FIGS. 1 to 3, the underframe 1 is provided with a bottom 2 formed by joining a plurality of members side by side in a plane and sides provided at both ends in the vehicle body width direction of the bottom 2. It consists of the beam 3, the end beam 4 provided in the both ends of the vehicle body longitudinal direction of the floor 2, the barrier 5 provided in the lower surface of the floor 2, and the center room 7 . Although not shown in detail, the bottom 2 is comprised by arranging the longitudinal direction of the member which consists of a some hollow extruded shape material along the longitudinal direction of a vehicle body, and joining the edge part of the width direction of adjacent members. Usually, the bottom 2 is joined by welding the upper surface and lower surface of an adjacent member, ie, both surfaces. The side beams 3 and 3 are disposed along the vehicle body longitudinal direction at both ends of the vehicle body width direction of the bottom 2. Each side beam 3 is a hollow extruded shape member, and as shown in FIGS. 2 and 3, the vertical dimension is longer than that of the bottom 2. The end beam 4 is arrange | positioned so that the longitudinal direction may follow the vehicle body longitudinal direction edge part of the floor 2. As shown in FIG.

The donor 5 is provided near the center of the vehicle body in the longitudinal direction away from the end beam 4 at the bottom of the bottom 2 by a predetermined distance. The donation 5 is provided in the position where a vehicle body is supported by a trolley | bogie, and is comprised between the side beams 3 and 3 over the full length of a vehicle body width direction. The donor 5 has a predetermined width in the vehicle body longitudinal direction, and an air spring support 6 is disposed at both ends thereof. The vehicle body weight is supported by the trolley via the air spring (not shown) which the trolley has at the position of the air spring support 6 provided in the barrier 5 provided in the lower surface of the bottom 2.

Between the end beam 4 and the donation 5, the two center chambers 7 and 7 are provided in the form extended in the vehicle body longitudinal direction in the state symmetrically arrange | positioned with respect to the vehicle body width center line. At the vehicle body longitudinal end positions of the center chambers 7 and 7, a connector support 8 is provided, on which a connector (not shown) for connecting with an adjacent vehicle is provided. The edge part of the vehicle body longitudinal direction center part side of the center chambers 7 and 7 is joined by crossing the donation 5. In the donation 5, an anti-rolling device for suppressing rolling vibration of the vehicle body in a space near the center of the vehicle body longitudinal direction of the air spring bearings 6, 6, and in this example, the air spring bearings 6, 6 (not shown). Anti-rolling device supports 9 and 9 are provided for fixing). The blocking compressive load acting via the coupler is transmitted through the center chambers 7 and 7 holding the connector support 8 to the floor 2 and the donation 5 coupled to the center chambers 7 and 7. .

In this embodiment, the center chamber 7 penetrates through the filling 5 and the intersection part of the center chamber 7 and the filling 5 becomes the penetrating part 10. As shown in FIG. 2, the center chamber 7 in the position of this penetrating part 10 is a hollow body which has the partition 13 which extends along a diagonal line inside as a single body in the cross section orthogonal to a longitudinal direction. It consists of a hollow extruded shape member of rectangular cross section. The partition 13 is directed from the corner portion 7a of the vehicle body width direction center part side on the bottom 2 side of the center chamber 7 toward the corner portion 7b of the vehicle body width direction end side on the opposite side to the floor 2. It is installed diagonally. That is, the interior space of the penetrating part 10 which is the intersection part with the insertion 5 of the center chamber 7 comprises the space which communicates the vehicle body longitudinal direction end side of the insertion 5 and the vehicle body longitudinal direction central part side. Then, by joining the plurality of divided donations 5 and these center chambers 7 and 7, the donations are formed over the entire length of the vehicle body width direction. By this structure, the wiring and piping 11 which penetrates in the vehicle body longitudinal direction extends in the vehicle body longitudinal direction using the internal space which became hollow of the center chamber 7, including the part of the penetration part 10. As shown in FIG. . The vehicle body longitudinal center portion side of the penetrating portion 10 is opened as the opening end 12.

The upper surface of the donor 5 and the center chamber 7 are joined to the bottom surface of the bottom 2, and the corner portions 7a and 7a ′ on the bottom 2 side of the center chamber 7 have a bottom ( It joins in the vicinity of the intersection of the face plate 2a and the rib 2b of the hollow extruded shape member of 2). Then, in order to provide the center pin support 20 over the lower surfaces of both the donation 5 and the center chamber 7, the thickness dimension of the donation 5 (the dimension in the height direction of the vehicle body) and the center chamber 7 are provided. The plane is formed by matching the thickness dimension (dimension in the height direction of the vehicle body). The configuration in which the center chamber 7 shown here is penetrated through the donation 5 is not dependent on the longitudinal vertical cross-sectional shape and the number of the center chambers 7, and the center chamber 7 and the donation (5) having substantially the same thickness dimensions. ) Is bonded to form an extension having a continuous surface covering both the center chamber 7 and the bonus 5 over the entire length of the vehicle body width direction. In this example, the center chamber 7 excluding the position of the penetrating portion 10 extends the center chamber 7 at the position of the penetrating portion 10 as it is, and the c-type in which one side surface and the partition wall 13 are removed. Other members such as a cross section, a c-shaped cross section, a hollow cross section having an opening in a part thereof, and an I-shaped cross section may be joined to the center chamber 7 at the position of the penetrating portion 10. Further, even when the thickness dimension (dimension in the vehicle body height direction) of the center chamber 7 is smaller than the thickness dimension (dimension in the vehicle body height direction) of the donor 5, the intersection of the center chamber 7 and the donor 5 is determined. By setting it as the above-mentioned structure, the wiring and piping 11 can be set as the penetrating part which penetrates the inside of the center chamber 7. As shown in FIG.

In such a structure, since it is not necessary to provide the penetrating pipe | tube dedicated for wiring and piping in the provision 5, a component number and manufacturing cost can be reduced. Moreover, since the partition 13 provided in the state extended along the diagonal inside the center room 7 in the position of the penetrating part 10 bears the load which acts on the anti-roller support 9, Installation of a reinforcing member for securing the stiffness and strength of (5) and an increase in the plate thickness of the center chamber 7 can be made unnecessary, and the rigidity and strength of the donation 5 can be secured efficiently. This principle can be explained as follows.

In FIG. 4, AA sectional drawing in the vehicle body structure shown in FIG. 1 when the partition 13 is not provided in the center room 7 in the position of the penetrating part 10 is shown, and FIG. The deformation | transformation (視 G in FIG. 1) when the load 14 from an anti rolling apparatus acts on the vehicle body structure shown is shown. Corner portions 7a 'and 7a' on the bottom 2 side of the center chamber 7 are joined to the intersection of the face plate 2a and the rib 2b of the hollow extruded shape member of the bottom 2. When the rolling vibration of the vehicle body occurs, in order to suppress this vibration, a load in the upward direction is applied to one anti-rolling device support 9 and a downward load on the other anti-rolling device support 9. That is, the shear load in the thickness direction (body height direction) acts on the center chamber 7 at the positions of the bottom 2, the donation 5, and the penetrating portion 10. At that time, the center chamber 7 at the position of the penetrating portion 10 having the cavity continuous in the vehicle body longitudinal direction cannot sufficiently support the shear load and is greatly sheared, and the periphery 5 of the periphery thereof is It is a seriously severe condition. In order to prevent this, it is necessary to install the reinforcing member or to increase the thickness of the center chamber 7 at the position of the penetrating portion 10, leading to an increase in the number of parts and the production cost. 6, the deformation degree (G) when the load 14 from an anti rolling apparatus acted on the vehicle body structure shown in FIG. 2 is shown. The partition 13 arranged at an angle close to 45 degrees which is the main stress direction with respect to the tip load in the thickness direction (body height direction) effectively suppresses the shear deformation of the center chamber 7 at the position of the penetrating portion 10. do. In addition, since the vicinity of the intersection of the face plate 2a and the rib 2b of the hollow extruded shape member in the bottom 2 of the anti-rolling device support 9 and the rib 2b is combined with the partition 13, the load from the anti-rolling device The 14 can be smoothly delivered to the bottom 2. That is, the stiffness and strength of the donation 5 can be ensured efficiently.

In addition, as shown in FIG. 3, the center chamber 7 in the vicinity of the vehicle body longitudinal direction side of the donor 5 is a c-shaped cross section, and the wiring and piping 11 extended along the center chamber 7 is shown. ) Is pulled in from the open surface of the c-shaped cross section, penetrates through the inside of the center chamber 7 at the position of the penetrating portion 10, and opens the opening end 12 on the vehicle body longitudinal center portion side. (See Fig. 1) is installed extending from the longitudinal center portion of the body of the underframe (1). That is, these wirings and pipes 11 extend so as to extend from the vehicle body longitudinal end side of the donor 5 to the vehicle body longitudinal center portion side through the inside of the center chamber 7 at the position of the penetrating portion 10. I'm going.

7 and 8 are views showing another embodiment of the vehicle body structure according to the present invention, and are sectional views A-A of the vehicle body structure shown in FIG. 1. In the embodiment shown in FIG. 7, the partition wall 13 of the center chamber 7 at the position of the penetrating portion 10 is provided in a state extending along the diagonal line opposite to the embodiment shown in FIG. 2, and in FIG. 8. In the example shown, the partition 13 of the center chamber 7 in the position of the penetrating part 10 is provided simultaneously in the state extended along both diagonal lines. All have the same effects as the embodiment shown in FIG. 2.

In addition, the vehicle body structure shown in FIGS. 9-11 is embodiment which has one center room in the center of the vehicle body width direction. 9 is a bottom view of a vehicle body structure having one center chamber in the center of the vehicle body width direction, and FIGS. 10 and 11 are C-C cross-sectional views and D-D cross-sectional views of the vehicle body structure shown in FIG. 9, respectively. Since the vehicle body structure shown in FIGS. 9-11 does not change with the vehicle body structure shown in FIGS. 1-3 with respect to other vehicle body structures other than the center chamber and the structure of the grant concerning it, the vehicle body structure shown in FIGS. Detailed description of the same components as will be omitted.

In the underframe 1 illustrated in FIGS. 9 to 11, one center chamber 7 intersects the conduit 5 at the center portion in the vehicle body width direction. The center chamber 7 extends through the filling 5, and the intersection of the center chamber 7 and the filling 5 is a penetrating portion 10. The center chamber 7 at the position of the penetrating portion 10 integrates the partition wall 13 extending over the edge portion 7a and the edge portion 7b along a diagonal line as viewed in a cross section perpendicular to the longitudinal direction. It consists of a hollow extruded shape member of the hollow rectangular cross section which it has inside. That is, the interior space of the penetrating part 10 which is the intersection part with the insertion 5 of the center chamber 7 comprises the space which communicates the vehicle body longitudinal direction end side of the insertion 5 and the vehicle body longitudinal direction central part side. The center chamber 7 is joined by welding to the donation 5 at the position of the penetrating part 10. The wiring and piping 11 which penetrates in the vehicle body longitudinal direction extends using the internal space which became the hollow of the center chamber 7, including the part of the penetration part 10. As shown in FIG. The upper surface of the donor 5 and the center chamber 7 are joined to the bottom surface of the bottom 2, and the corner portions 7a and 7a ′ on the bottom 2 side of the center chamber 7 have a bottom ( It joins in the vicinity of the intersection of the face plate 2a and the rib 2b of the hollow extruded shape member of 2).

As shown in FIG. 11, openings are formed in both side surfaces of the center chamber 7 in the vicinity of the vehicle body longitudinal end side of the donor 5, and the wiring extends outward of the center chamber 7. The piping 11 penetrates the inside of the center chamber 7 at the position of the penetrating part 10 through the opening part, and the opening end 12 of the penetrating part 10 in the vehicle body longitudinal direction side part (refer FIG. 9). ) Extends toward the vehicle body longitudinal center portion side of the underframe 1. That is, these wirings and pipes 11 extend so as to extend from the vehicle body longitudinal end side of the donor 5 to the vehicle body longitudinal center portion side through the inside of the center chamber 7 at the position of the penetrating portion 10. I'm going. In addition, although the partition 13 is provided only along one diagonal line in the embodiment shown to FIG. 9-11, as shown in FIG. 7 or FIG. 8 in the above-mentioned embodiment, it extends along the other diagonal line. It is clear that they may be installed in such a state that they may be installed, or may be installed in an extended state along both diagonal lines.

12 and 13 are views showing still another embodiment of the vehicle body structure according to the present invention, which are A-A cross-sectional view and B-B cross-sectional view of FIG. In the underframe 1 shown in FIG. 12 and FIG. 13, the upper surface of the center chamber 7 and the donor 5 is lifted up to the face plate 2c of the floor 2, and the bottom portion of the railway vehicle is the center chamber ( 7), the donor (5) and the bottom (2). Since there is no change with the vehicle body structure shown in FIGS. 1-3 about the vehicle structure other than this structure, detailed description about the same component as the vehicle body structure shown in FIGS. 1-3 is abbreviate | omitted.

The edge parts 7a and 7a 'of the vehicle body width direction center part side of the center room 7 side, and the face plate 2c of the bottom 2 are joined by welding, and the bottom part is formed. Moreover, the upper surface of the donor 5 is also joined by the face plate 2c of the bottom 2 by welding at the vehicle body longitudinal direction edge part, and the bottom part is formed. Thereby, as shown in FIG. 12, the wiring / piping 11 is provided in the inside by making the whole penetration section 10 the whole vertical cross section perpendicular | vertical to the longitudinal direction of the center chamber 7 as a penetrating part 10. As shown in FIG.

Moreover, as shown in FIG. 13, the center chamber 7 in the vicinity of the vehicle body longitudinal direction side of the donation 5 is a c-shaped cross section. The wiring and piping 11 extending along the center chamber 7 has a gap 7c between the open surface of the c-shaped cross section of the center chamber 7 and the bottom 2 in the vicinity of the barrier 5. From the inside of the center chamber 7 through the inside of the center chamber 7 at the position of the penetrating portion 10, and the opening end 12 of the penetrating portion 10 on the vehicle body longitudinal center side. It extends to the vehicle body longitudinal center part side of the underframe 1 from (refer FIG. 1), and is installed. That is, these wirings and pipes 11 extend so as to extend from the vehicle body longitudinal end side of the donor 5 to the vehicle body longitudinal center portion side through the inside of the center chamber 7 at the position of the penetrating portion 10. I'm going.

In such a structure, since it is not necessary to provide the penetrating pipe | tube dedicated for wiring and piping in the provision 5, a component number and manufacturing cost can be reduced. Moreover, since the partition 13 provided in the state extended along the diagonal inside the center room 7 in the position of the penetrating part 10 bears the load which acts on the anti rolling device support 9, Installation of a reinforcing member for securing the stiffness and strength of (5) and an increase in the plate thickness of the center chamber 7 can be made unnecessary, and the rigidity and strength of the donation 5 can be efficiently ensured. In addition, there is an advantage that the thickness of the underframe 1 can be reduced. In addition, if the thickness of the underframe 1 is the same as the vehicle body structure shown in Fig. 1, the space of the center chamber 7 at the position of the penetrating portion 10 can be made wide enough to correspond to the thickness of the underframe 2. It is possible to increase the amount of wiring and piping 11 passing through the inside of the center chamber 7 at the position of the penetrating portion 10.

When the height of the platform is low, the floor height is also lowered on the vehicle side. In vehicles with low floor height, there is a tendency that the thickness thickness (the dimension in the vehicle body height direction) of the obstruction cannot be largely taken. It is not possible to pass a sufficient number of wirings or pipes only by providing a through tube extending in the longitudinal direction of the vehicle body only for the purpose of providing. However, according to the present invention, the wiring or pipes can be extended through a center chamber having a sufficient cross-sectional area. have. In addition, by using the through tube and the through portion of the center chamber together, more wirings and piping can be extended.

The technical scope of the present invention is not limited to the words described in the claims of the claims or the means for solving the problems, but also to the range easily replaced by those skilled in the art.

1 is a bottom view showing an embodiment of a vehicle body structure according to the present invention;

FIG. 2 is a cross-sectional view A-A of the vehicle body structure shown in FIG. 1; FIG.

3 is a sectional view taken along line B-B of the vehicle body structure shown in FIG. 1;

Figure 4 is a cross-sectional view A-A of the underframe which is a vehicle body structure according to the present invention,

FIG. 5 is a modified view (VIIG) of the vehicle body structure shown in FIG. 4; FIG.

FIG. 6 is a modified view (VIIG) of the vehicle body structure shown in FIG. 2; FIG.

7 is a sectional view A-A showing another embodiment of the vehicle body structure according to the present invention;

8 is a sectional view A-A showing another embodiment of the vehicle body structure according to the present invention;

9 is a bottom view showing another embodiment of the vehicle body structure according to the present invention;

10 is a C-C cross-sectional view of the vehicle body structure shown in FIG. 9;

FIG. 11 is a sectional view taken along the line D-D of the vehicle body structure shown in FIG. 9; FIG.

12 is a sectional view A-A showing still another embodiment of the vehicle body structure according to the present invention;

Fig. 13 is a sectional view taken along the line B-B, showing still another embodiment of the vehicle body structure according to the present invention;

14 is a bottom view of an underframe that is a conventional vehicle body structure;

FIG. 15 is a sectional view taken along the line E-E of the vehicle body structure shown in FIG. 14;

FIG. 16 is a cross-sectional view taken along the line F-F of the vehicle body structure shown in FIG. 14.

[Description of Drawings]

1: underframe 2: floor

2a, 2c: face plate 2b: rib

3, 3: side beam 4: end beam

5: 6, 6: air spring bearing

7, 7: center room 7a, 7a ', 7b, 7b': corner part

7c: clearance 8: connector support

9, 9: anti-rolling device support 10, 10: through part

11: wiring and piping 12, 12: opening end

13 bulkhead 14 load

15: through tube 20: center pin bearing

Claims (14)

In a vehicle body structure having a bolster provided in the underframe in the vehicle body width direction and a center sill intersecting the grant and extending in the vehicle body longitudinal direction toward the vehicle body end side, The center chamber has an intersection portion that penetrates and crosses from the vehicle body end portion side to the vehicle body center portion side, The intersection portion of the center chamber is an angled cylindrical shape member having a partition wall extending along a diagonal line in a cross section perpendicular to the longitudinal direction thereof. The method of claim 1, The partition wall is provided in a diagonal shape from the corner portion of one of the vehicle body width direction center portion or the vehicle body width direction end portion of the vertically upward side of the angled cylindrical shape member toward the corner portion of the vertically downward side. Body structure characterized by the above. The method of claim 1, The partition wall is provided in a diagonal shape from corner portions at both sides of the vehicle body width direction on the upper side in the vertical direction toward corner portions at both sides of the vehicle body width direction on the lower side in the vertical direction, respectively. The method according to any one of claims 1 to 3, A vehicle body structure characterized in that it penetrates wiring and piping inside an angled cylindrical shape member. The method of claim 4, wherein An opening is provided in any one surface of the center chamber not intersecting with the donation except for the upper side in the vertical direction of the center chamber. The method of claim 5, The wiring body and the piping which penetrate the inside of the said angled cylindrical shape member are drawn in from the said opening, The vehicle body structure characterized by the above-mentioned. The method of claim 6, The center body of the part which does not intersect the said donation is produced by processing the said square cylindrical shape member, The vehicle body structure characterized by the above-mentioned. The method according to any one of claims 1 to 3, A body structure comprising two center chambers arranged side by side in the vehicle body width direction. The method according to any one of claims 1 to 3, A vehicle body structure, wherein said center chamber is one structure arranged in the center of the vehicle body width direction. The method according to any one of claims 1 to 3, The donor is divided by the center chamber, and the donor is configured over the entire length of the vehicle body width direction by joining the donor segmented with the center chamber. The method according to any one of claims 1 to 3, The bottom of the underframe is composed of a hollow extruded shape member consisting of two face plates and a plurality of ribs connecting them, And a corner portion at the bottom side of the angled cylindrical shape member disposed below the bottom in the vertical direction, in the vicinity of an intersection point of the face plate and the rib. The method according to any one of claims 1 to 3, The center chamber and the donor are characterized in that the upper surface of the center chamber and the donor is lifted up to the face plate of the underframe floor and serves as a part of the bottom of the underframe. The method of claim 11, An edge portion on the vehicle body width direction side of the center chamber and an end portion of the donor body longitudinal direction are joined to the face plate of the bottom of the underframe by welding. The method according to any one of claims 1 to 3, An air spring support and an anti-rolling device support are provided at both ends of the long body width direction.

Images