Vehicle body column structure

Abstract

The present invention relates to a vehicle body column structure using a fiber-reinforced resin composite material, which suppresses the breakage of a column using the fiber-reinforced resin composite material and enables the column to plastically deform to absorb collision energy when a side collision occurs. A vehicle body pillar structure using a fiber-reinforced resin composite material comprises: at least two tubular portions made of a fiber-reinforced resin, each tubular portion having an axis in the height direction of a vehicle body; and a metal plate that is disposed between any two cylindrical sections arranged in the front-rear direction of the vehicle body and that extends in the height direction of the vehicle body and in the width direction of the vehicle body.

Description

Technical Field

[0001] The technology disclosed herein relates to a vehicle body pillar structure using a fiber-reinforced resin composite material. Background Art

[0002] In recent years, the use of fiber-reinforced resins represented by carbon fiber reinforced resins (hereinafter referred to as CFRP) to manufacture vehicle body structures has been studied for the purpose of reducing the weight of the vehicle body of a sedan or other vehicle. Components made of fiber-reinforced resins have high rigidity, and in particular, they have high strength against compressive stress or tensile stress acting along the orientation direction of the fibers. For example, Patent Documents 1 and 2 disclose a center pillar using a fiber-reinforced resin composite material in a portion of a component.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2019-182168

[0006] Patent Document 2: Japanese Patent Application Publication No. 2015-47895 Summary of the invention

[0007] Technical problem to be solved by the invention

[0008] Here, even if the pillar is mainly composed of fiber-reinforced resin composite materials, it is necessary to have the same functions as the previous metal pillars. For example, in the case of a side collision of the vehicle, the upper part of the center pillar needs to be suppressed from bending to protect the head of the occupant, and the lower part of the center pillar needs to absorb the collision energy. However, the fracture strain of metal is more than 10%, while the fracture strain of carbon fiber reinforced resin parts is about a few percent. Therefore, compared with metal, it is necessary to increase the strength to prevent fracture and absorb energy.

[0009] On the other hand, when the strength of the center pillar is increased, the side beam connected to the lower part of the center pillar is easily deformed due to the load input during a side collision. In many cases, electric vehicles have batteries mounted under the floor. In the event of a side collision, if the side beam deforms significantly, a large load will be applied to the battery casing, so it is preferred to suppress the deformation of the side beam.

[0010] Therefore, the technology disclosed in the present invention is completed in view of the above-mentioned problems. The purpose of the present invention is to provide a vehicle body pillar structure made of fiber-reinforced resin composite materials, which can suppress the fracture of the pillar when a side collision occurs, and cause the pillar to undergo plastic deformation to absorb the collision energy.

[0011] Technical solutions for solving technical problems

[0012] In order to solve the above-mentioned problems, according to a certain viewpoint of the disclosed technology, there is provided a vehicle body pillar structure using a fiber-reinforced resin composite material, the vehicle body pillar structure comprising: at least two tubular portions made of fiber-reinforced resin, each having an axis along the vehicle body height direction; and a metal plate, which is arranged between any two of the above-mentioned tubular portions arranged along the front-rear direction of the vehicle body and extends along the above-mentioned vehicle body height direction and vehicle width direction.

[0013] Effects of the Invention

[0014] As described above, according to the technology disclosed in the present invention, it is possible to provide a vehicle body pillar structure that can suppress fracture of the pillar and plastically deform the pillar to absorb collision energy when a side collision occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram showing the overall structure of the vehicle body side structure according to the present embodiment.

[0016] Figure 2 This is an explanatory diagram shown to explain the structure of the center pillar structure portion of the present embodiment.

[0017] Figure 3 It is a perspective view of the center pillar structure part of this embodiment.

[0018] Figure 4 It is shown Figure 3 A perspective view of the metal plate, the first connecting portion and the second connecting portion in the center pillar structure is shown.

[0019] Figure 5 It is a perspective view of a pillar body portion constituting a center pillar structure portion according to the present embodiment.

[0020] Figure 6 It is a perspective view of the first connection portion of the center pillar structure according to the present embodiment.

[0021] Figure 7 It is a perspective view of the second connection portion of the center pillar structure part according to the present embodiment.

[0022] Figure 8 It is an explanatory diagram showing a cross-sectional structure of a first region of a lower portion of a center pillar according to the present embodiment.

[0023] Fig. 9 It is an explanatory diagram showing the cross-sectional structure of the second region of the upper portion of the center pillar according to the present embodiment. DETAILED DESCRIPTION

[0024] In the following, the preferred embodiments of the technology disclosed in the present invention are described in detail with reference to the accompanying drawings. In addition, in the present specification and the accompanying drawings, components having substantially the same functional composition are marked with the same reference numerals to omit repeated descriptions.

[0025] First, the outline of the vehicle body pillar structure according to the present embodiment will be described.

[0026] Figure 1 1 is a schematic diagram showing the appearance of the vehicle body side structure 1 . Figure 1 The vehicle body side structure 1 shown schematically shows a part of the structure of the left side of the vehicle. Figure 2 This is a side view of the center pillar 3 as viewed from the outside in the vehicle width direction. Figure 1 and Figure 2 As shown, in this specification, the front-rear direction of the vehicle body is represented as an X direction, the vehicle width direction is represented as a Y direction, and the height direction of the vehicle body is represented as a Z direction.

[0027] The vehicle body side structure 1 is composed of a roof rail 5, a rear pillar 4, a front pillar 2, a center pillar 3, and a side rail 6. The roof rail 5 extends in the vehicle body front-rear direction at the upper part of the vehicle cabin space to form the side edge of the roof. The side rail 6 extends in the vehicle body front-rear direction at the lower part of the side of the vehicle.

[0028] The lower end of the front pillar 2 is connected to the front end of the side beam 6, and the upper end is connected to the front end of the roof longitudinal beam 5. The front pillar 2 forms the front part of the vehicle interior space and is configured to support the side of the windshield. The lower end of the rear pillar 4 is connected to the rear end of the side beam 6, and the upper end is connected to the rear end of the roof longitudinal beam 5. The lower end of the center pillar 3 is connected to the center of the side beam 6 in the front-rear direction of the vehicle body, and the upper end is connected to the center of the roof longitudinal beam 5 in the front-rear direction of the vehicle body.

[0029] An opening for a front door is formed between the side sill 6, the roof rail 5, the front pillar 2, and the center pillar 3. Also, an opening for a rear door is formed between the side sill 6, the roof rail 5, the rear pillar 4, and the center pillar 3. Each member constituting the vehicle body side structure 1 may be constituted by a plurality of members.

[0030] In the vehicle body side structure 1, the center pillar 3 has a length direction along the height direction and is formed into a columnar shape. The center pillar 3 has a center pillar structure portion 10, and the upper end of the center pillar structure portion 10 is connected to the roof longitudinal beam 5, and the lower end is connected to the side beam 6. The center pillar structure portion 10 has flanges 7 and 9 on the side surfaces of the front side and the rear side of the vehicle body, respectively. The flanges 7 and 9 are used as door stops for vehicle doors, for example. The method of forming the flanges 7 and 9 on the center pillar structure portion 10 is not particularly limited, and the flanges 7 and 9 formed into other parts may be joined to the center pillar structure portion 10, or the flanges 7 and 9 may be provided on either or both of the outer panel and the inner panel joined by sandwiching the center pillar structure portion 10.

[0031] like Figure 2As shown, the first area 3a of the lower part of the center pillar 3, which includes a range equivalent to the height of the bumper of a car, is required to have the function of absorbing the collision energy input when the vehicle has a side collision and relieving the impact on the interior of the vehicle. The first area 3a is equivalent to the collision energy absorption area. On the other hand, the second area 3b of the upper part of the center pillar 3, which includes at least a range equivalent to the height of the occupant's head, is required to have the function of suppressing the bending of the center pillar 3 and protecting the occupant's head when the vehicle has a side collision.

[0032] Next, as the vehicle body pillar structure of the present embodiment, the structure of the center pillar structure portion 10 will be described in detail.

[0033] Figures 3 to 9 It is a diagram for explaining the structure of the center pillar structural portion 10 . Figure 3 A perspective view of the center pillar structure 10 is shown. Figure 4 Show Figure 3 1 is a perspective view of the metal plate 21 , the first connecting portion 31 , and the second connecting portion 35 in the center pillar structure 10 . Figure 5 A perspective view of the pillar body portion 11 constituting the center pillar structure portion 10 is shown. Figure 6 A perspective view showing the first connecting portion 31 is shown. Figure 7 A perspective view of the second connection portion 35 is shown. Figure 8 Show Figure 2 The arrow view of the II section of the center column structure 10 is shown. Fig. 9 Show Figure 2 The arrow view of the II-II cross section of the center pillar structure 10 is shown.

[0034] The center pillar structure 10 shown in the figure is omitted. Figure 2 The flanges 7 and 9 are shown. In each figure, the front-rear direction (X direction) of the vehicle body, the vehicle width direction (Y direction) and the height direction (Z direction) of the vehicle body are shown.

[0035] The center pillar structure 10 includes a pillar body 11, a first connection portion 31, and a second connection portion 35. The pillar body 11 is made of a fiber-reinforced resin composite material. The first connection portion 31 and the second connection portion 35 are connected to the upper end and the lower end of the pillar body 11, respectively, and have the function of connecting the center pillar structure 10 to the roof rail 5 and the side rail 6.

[0036] The column body portion 11 is formed in a columnar shape with its axial direction extending in the Z direction. The column body portion 11 includes two cylindrical portions 13 a and 13 b , a metal plate 21 , an outer cylindrical portion 15 , two reinforcing layers 17 a and 17 b , and an envelope layer 19 .

[0037] The two cylindrical portions 13a and 13b have axes along the Z direction. The two cylindrical portions 13a and 13b are respectively provided continuously from the upper end to the lower end of the column body portion 11 along the Z direction. The two cylindrical portions 13a and 13b are arranged side by side along the X direction. The two cylindrical portions 13a and 13b are respectively made of fiber-reinforced resin composite materials, and contain continuous fibers oriented in directions with angles of 0 degrees, plus or minus 45 degrees, and plus or minus 90 degrees relative to the Z direction. The column body portion 11 may have three or more cylindrical portions as long as it includes at least two cylindrical portions arranged along the X direction.

[0038] The metal plate 21 extends in the Z direction and the Y direction and is sandwiched between the two cylindrical parts 13a and 13b. The metal plate 21 is a plate-shaped member made of, for example, an aluminum plate or a steel plate. The metal plate 21 made of an aluminum plate can help to reduce the weight of the column body 11. A coupling portion 23 (see FIG. 2 ) coupled to the second coupling portion 35 is provided at the lower end of the metal plate 21. Figure 5 Although not shown in the figure, a connection portion connected to the first connection portion 31 is also provided at the upper end of the metal plate 21 .

[0039] In the end portion 21a on the vehicle body outer side in the vehicle width direction of the metal plate 21, a first distance D1 between a first end portion 21aa located in a first region (crash energy absorbing region) 3a and a surface 19a on the vehicle body outer side of the pillar body portion 11 is set to be larger than a second distance D2 between a second end portion 21ab located in a second region 3b outside the crash energy absorbing region and the surface 19a on the vehicle body outer side of the pillar body portion 11 (see Figure 8 and Fig. 9 ).

[0040] The outer cylindrical portion 15 is provided to surround the two cylindrical portions 13a and 13b sandwiching the metal plate 21. The outer cylindrical portion 15 is made of a fiber-reinforced resin composite material and includes continuous fibers oriented at angles of 0, plus or minus 45, and plus or minus 90 with respect to the Z direction.

[0041] The two reinforcing layers 17a and 17b are respectively arranged on the surfaces of both sides of the outer cylindrical portion 15 in the vehicle width direction. The two reinforcing layers 17a and 17b are respectively arranged on the vehicle body inner side and vehicle body outer side of the metal plate 21 in the vehicle width direction, and are provided from the upper end to the lower end of the pillar body portion 11. For example, the reinforcing layers 17a and 17b are composed of a fiber-reinforced resin composite material, and the fiber-reinforced resin composite material at least includes continuous fibers oriented in a direction intersecting the Z direction. The reinforcing layers 17a and 17b have a function of suppressing the metal plate 21 from flying out of the pillar body portion 11 when a load is applied to the pillar body portion 11 in a side collision.

[0042] However, the reinforcing layers 17a and 17b may be made of materials other than fiber-reinforced resin composite materials as long as they have strength to withstand the ends of the metal plate 21. For example, the reinforcing layers 17a and 17b may be sheets made of rubber composite materials having the required elasticity and strength.

[0043] The surrounding layer 19 is provided to surround the outer cylindrical portion 15 on which the reinforcing layers 17a and 17b are arranged on the surfaces of both sides in the vehicle width direction. The surrounding layer 19 has the function of integrally holding the pillar body portion 11. The surrounding layer 19 is made of a fiber-reinforced resin composite material and contains continuous fibers oriented in directions forming angles of 0 degrees, plus or minus 45 degrees, and plus or minus 90 degrees with respect to the Z direction.

[0044] The two cylindrical portions 13 a and 13 b , the outer cylindrical portion 15 , the two reinforcing layers 17 a and 17 b , and the envelope layer 19 are formed using a fiber-reinforced resin obtained by impregnating carbon fibers with a thermoplastic resin or a thermosetting resin as a matrix resin.

[0045] Examples of thermoplastic resins include polyethylene resin, polypropylene resin, polyvinyl chloride resin, ABS resin (acrylonitrile-butadiene-styrene copolymer resin), polystyrene resin, AS resin (acrylonitrile-styrene copolymer resin), polyamide resin, polyacetal resin, polycarbonate resin, polyester resin, PPS (polyphenylene sulfide) resin, fluororesin, polyetherimide resin, polyetherketone resin or polyimide resin.

[0046] The thermoplastic resin may be one of the above resins or a mixture of two or more thereof. Alternatively, the thermoplastic resin may be a copolymer of the above resins. When the thermoplastic resin is a mixture, a compatibilizer may also be used in combination. In addition, a bromine flame retardant, a silicon flame retardant, red phosphorus, etc. may also be added to the thermoplastic resin as a flame retardant.

[0047] In addition, as thermosetting resins, for example, epoxy resins, unsaturated polyester resins, vinyl ester resins, phenolic resins, polyurethane resins, silicone resins, etc. can be cited. The thermosetting resin can be one of the above resins or a mixture of two or more. In addition, a suitable curing agent or reaction accelerator can also be added to the thermosetting resin.

[0048] The carbon fiber may contain continuous fibers oriented in the Z direction and continuous fibers oriented in a direction intersecting the Z direction in an appropriate ratio. The tensile stress generated when a load is input due to a side collision can be adjusted by the amount of continuous fibers oriented in the Z direction. The rigidity of the input load during a side collision can be adjusted by the amount of continuous fibers oriented in a direction intersecting the Z direction, and the energy absorption amount can be adjusted. In addition, the carbon fiber may contain short fibers in addition to the continuous fibers, and may contain other fibers other than the carbon fiber as reinforcing fibers.

[0049] Since the two cylindrical parts 13a, 13b, the outer cylindrical part 15 and the surrounding layer 19 are cylindrical molded bodies with closed cross sections, the continuity of the fibers can be maintained not only in the axial direction (Z direction) but also in the circumferential direction around the axis, thereby improving the rigidity against the load input during a side collision.

[0050] The first connecting portion 31 and the second connecting portion 35 have the function of connecting the center pillar structure 10 to the roof rail 5 and the side rail 6, respectively. The first connecting portion 31 and the second connecting portion 35 are molded products made of metal. The first connecting portion 31 and the second connecting portion 35 can be molded into desired shapes using a 3D printer, for example.

[0051] The first connection portion 31 includes a fixing portion 32 for fixing to the pillar body portion 11 and a connection portion 33 for connecting to the roof rail 5. The fixing portion 32 includes two fitting portions 32a and 32b that are respectively fitted into the openings on the upper ends of the two cylindrical portions 13a and 13b of the pillar body portion 11. The first connection portion 31 is attached to the pillar body portion 11 by fastening bolts inserted through the pressure plates 41a and 41b disposed on the surface of the pillar body portion 11, with the fitting portions 32a and 32b respectively inserted into the openings on the upper ends of the two cylindrical portions 13a and 13b of the pillar body portion 11.

[0052] In addition, a slit (not shown) is formed between the two fitting parts 32a and 32b, and a connecting part (not shown) provided at the upper end of the metal plate 21 of the column body 11 is inserted into the slit. When the connecting part of the metal plate 21 is inserted into the slit, the connecting part 23 and the first connecting part 31 are connected by fastening members such as bolts or by welding. The connecting part 33 has a plurality of fins ( Figure 7 In the example of FIG. 1 , three are inserted into the roof rail 5 side and fixed by bolts (not shown).

[0053] Similarly, the second connection portion 35 has a fixing portion 36 for fixing to the column body portion 11, and a joint portion 37 for joining to the side beam 6. The fixing portion 36 has two fitting portions 36a, 36b that are respectively fitted into the openings on the lower end sides of the two cylindrical portions 13a, 13b of the column body portion 11. The second connection portion 35 is attached to the column body portion 11 by fastening bolts inserted through the pressure plates 43a, 43b arranged on the surface of the column body portion 11, with the fitting portions 36a, 36b respectively inserted into the openings on the lower end sides of the two cylindrical portions 13a, 13b of the column body portion 11. The vehicle body may also serve as the pressure plate 43b.

[0054] In addition, a slit (not shown) is formed between the two fitting parts 36a and 36b, and the joint part 23 provided at the lower end of the metal plate 21 of the column body 11 is inserted into the slit. When the joint part 23 of the metal plate 21 is inserted into the slit, the joint part 23 and the second connecting part 35 are joined using a fastening member such as a bolt or by welding. The joint part 37 has a plurality of fins ( Figure 8 In the example of FIG. 1 , three are used), which are inserted into the side member 6 and fixed by bolts (not shown).

[0055] The pillar body portion 11 of the center pillar structure portion 10 of the present embodiment has a metal plate 21 disposed between two tubular portions 13a and 13b made of fiber-reinforced resin arranged in the X direction. Since the metal plate 21 is extended in the Y direction and the Z direction, the strength against the load input in the Y direction is improved compared to the case where the metal plate 21 is extended in the X direction and the Z direction. Since the fracture strain of the metal plate 21 is larger than the fracture strain of the fiber-reinforced resin component, even if the pillar body portion 11 is made of a fiber-reinforced resin composite material, the center pillar 3 can be plastically deformed when a side collision occurs in the vehicle. Therefore, the strength against the input collision energy can be improved, and the fracture of the center pillar structure portion 10 can be suppressed.

[0056] In the second region 3b of the upper portion of the center pillar 3, the length of the metal plate 21 disposed between the two cylindrical portions 13a and 13b in the vehicle width direction is the same as the length of the two cylindrical portions 13a and 13b in the vehicle width direction, and both ends of the metal plate 21 in the vehicle width direction are in contact with the outer cylindrical portion 15. Reinforcement layers 17a and 17b are disposed on both side surfaces in the vehicle width direction of the outer cylindrical portion 15, respectively, and the metal plate 21 is in a state of being sandwiched and supported by the reinforcement layers 17a and 17b together with the two cylindrical portions 13a and 13b via the outer cylindrical portion 15.

[0057] The second region 3b is a region for preventing the center pillar 3 from bending to protect the occupant's head. The metal plate 21 is supported by the reinforcement layers 17a and 17b together with the two cylindrical portions 13a and 13b via the outer cylindrical portion 15, thereby improving the rigidity of the center pillar 3 in the second region 3b. In addition, in the second region 3b, the load input from the outer side of the center pillar 3 in the vehicle width direction when a side collision occurs is quickly transferred from the outer surface 19a of the surrounding layer 19 in the vehicle width direction to the reinforcement layer 17b via the two cylindrical portions 13a and 13b and the metal plate 21. As a result, the input load can be borne by the entire two cylindrical portions 13a and 13b and the metal plate 21, and the center pillar 3 can be prevented from bending in the second region 3b.

[0058] On the other hand, the first region 3a is required to absorb the collision energy input when the vehicle is hit from the side, and to mitigate the impact on the interior of the vehicle, etc. As described above, in the end portion 21a on the vehicle width direction outer side of the vehicle body of the metal plate 21, the first distance D1 between the first end portion 21aa located in the first region 3a and the surface 19a on the vehicle body outer side of the pillar body portion 11 is set to be larger than the second distance D2 between the second end portion 21ab located in the second region 3b outside the collision energy absorption region and the surface 19a on the vehicle body outer side of the pillar body portion 11. Specifically, in the first region 3a at the lower portion of the center pillar 3, the first end portion 21aa on the vehicle width direction outer side of the vehicle body of the metal plate 21 located between the two cylindrical portions 13a, 13b is separated from the outer cylindrical portion 15.

[0059] In the first region 3a, the metal plate 21 is in contact with the outer cylindrical portion 15 on the inner side in the vehicle width direction, and is separated from the outer cylindrical portion 15 on the outer side in the vehicle width direction. Therefore, in the first region 3a, when a side collision occurs, the pillar body portion 11 is easily crushed by the load input from the outer side of the center pillar 3 in the vehicle width direction, and the collision energy can be absorbed during the period until the outer cylindrical portion 15 contacts the first end portion 21aa of the metal plate 21. In addition, after the outer cylindrical portion 15 contacts the first end portion 21aa of the metal plate 21, the load can be borne by the entire two cylindrical portions 13a, 13b and the metal plate 21, and the center pillar 3 can be suppressed from entering the vehicle interior.

[0060] In the first region 3a, the energy absorption characteristics can be arbitrarily designed by the distance D1 of the space formed between the outer cylindrical portion 15 and the first end portion 21aa of the metal plate 21. In addition, in the first region 3a, when the outer cylindrical portion 15 is in contact with the first end portion 21aa of the metal plate 21, the rigidity against the input load caused by the side collision is improved. Thus, the center pillar 3 can be prevented from entering the vehicle interior. In addition, since the rigidity of the center pillar 3 against the input load caused by the side collision is improved, the side beam 6 can be prevented from being greatly deformed, and in the case of an electric vehicle in which the battery housing is arranged under the floor, the damage to the battery housing can be reduced.

[0061] In addition, the two cylindrical portions 13a and 13b are continuously arranged from the upper portion to the lower portion in the length direction of the center pillar structure portion 10. Therefore, the structural continuity in the length direction of the entire center pillar structure portion 10 can be achieved, the center pillar 3 can be suppressed from bending, and the center pillar 3 can be suppressed from entering the vehicle interior. In addition, since the center pillar 3 of the present embodiment has a closed cross-section structure with the outer cylindrical portion 15 and the surrounding layer 19 arranged around it, even if a collision load is input during a side collision, it is possible to suppress fracture based on the joint or the like, and it is possible to suppress the center pillar 3 from bending or entering the vehicle interior.

[0062] In addition, the first connection portion 31 and the second connection portion 35 for connecting the center pillar structure portion 10 with the roof side rail 5 and the side rail 6 have two fitting portions 32a, 32b, 36a, 36b respectively fitted with the two cylindrical portions 13a, 13b of the pillar body portion 11, and the pillar body portion 11 is connected to the first connection portion 31 and the second connection portion 35 in a state where the cylindrical portions 13a, 13b and the fitting portions 32a, 32b, 36a, 36b are fitted with each other. Therefore, the connection strength between the pillar body portion 11 and the first connection portion 31 and the second connection portion 35 is improved.

[0063] In addition, the first connection part 31 and the second connection part 35 are respectively formed of a molded article made of metal. Since the first connection part 31 and the second connection part 35 are formed of metal, the connection with the metal plate 21 can be made strong. In addition, since the first connection part 31 and the second connection part 35 are formed of metal, by also installing a metal connection part on the side of the roof longitudinal rail 5 or the side rail 6, the connection between the center pillar structure 10 and the roof longitudinal rail 5 and the side rail 6 can be made strong. In addition, since the second connection part 35 is formed of metal, a seat belt retractor that winds up the seat belt can be arranged inside the second connection part 35, and the seat belt retractor can be protected when a side collision of the vehicle occurs.

[0064] In addition, the first connection portion 31 and the second connection portion 35 are each made of metal and connected to the joint portion 23 of the metal plate 21. Therefore, by installing a metal connection portion also on the roof rail 5 or the side rail 6 side, the roof rail 5 and the side rail 6 are connected by the metal member of the center pillar structure portion 10, so that the connection strength of the center pillar 3 in the vehicle body side structure 1 is improved.

[0065] The preferred embodiments of the technology disclosed in the present invention are described in detail above in conjunction with the accompanying drawings, but the technology disclosed in the present invention is not limited to these examples. Those skilled in the art of the present invention can obviously think of various changes or modifications within the scope of the technical ideas recorded in the claims, and it should be understood that these changes or modifications should also belong to the technical scope of the present invention. In addition, the embodiments formed by combining the above-mentioned embodiments and various modified examples certainly also belong to the technical scope of the present invention.

[0066] For example, in the above-mentioned embodiment, the center pillar structure is described as an example of the vehicle body pillar structure, but the technology disclosed in the present invention can also be applied to the front pillar structure or the rear pillar structure.

[0067] Explanation of symbols

[0068] 1……Body side structure

[0069] 2...Front pillar

[0070] 3… Middle column

[0071] 3a……The first area (collision energy absorption area)

[0072] 4... Back Post

[0073] 5...Roof rails

[0074] 6...Side beam

[0075] 7……Flange

[0076] 9……Flange

[0077] 10……Center column structure

[0078] 11……Column body

[0079] 13a, 13b...cylindrical part

[0080] 15...Outer cylindrical part

[0081] 17a, 17b……Reinforcement layer

[0082] 19... Enveloping Layer

[0083] 21...Metal Plate

[0084] 31……First connection

[0085] 35...Second connecting part.

Claims

1. A vehicle body pillar structure using a fiber reinforced resin composite material, comprising: at least two fiber-reinforced resin tubular portions having axes extending in a vehicle body height direction; as well as The metal plate is arranged between any two of the cylindrical portions arranged in the front-rear direction of the vehicle body and extends in the vehicle body height direction and the vehicle body width direction.

2. The vehicle body pillar structure according to claim 1, wherein: At an end portion of the metal plate on the vehicle body outer side in the vehicle width direction, a first distance between a first end portion of a predetermined collision energy absorbing region located in the vehicle body pillar structure and a surface on the vehicle body outer side of the vehicle body pillar structure is greater than a second distance between a second end portion of a region located outside the predetermined collision energy absorbing region and the surface on the vehicle body outer side of the vehicle body pillar structure.

3. The vehicle body pillar structure according to claim 1, wherein: The metal plate has a first metal connection portion connected to a roof rail at one end portion in the vehicle body height direction, and has a second metal connection portion connected to a side sill at the other end portion.

4. The vehicle body pillar structure according to claim 3, wherein: The first connection portion and the second connection portion each include two fitting portions which are arranged in parallel on the vehicle body front side and the vehicle body rear side of the metal plate and are fitted with the two cylindrical portions, respectively.

5. The vehicle body pillar structure according to claim 1, comprising: a fiber-reinforced resin reinforcement layer, each of which is arranged on the vehicle body inner side and the vehicle body outer side of the metal plate in the vehicle width direction, and contains at least continuous fibers oriented in a direction intersecting the vehicle body height direction.

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