Source: https://patents.google.com/patent/JP2016055867A/en
Timestamp: 2020-01-23 23:44:42
Document Index: 75052211

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JP2016055867A - Vehicle skeleton member and method for manufacturing vehicle skeleton member - Google Patents
Vehicle skeleton member and method for manufacturing vehicle skeleton member Download PDF
JP2016055867A
JP2016055867A JP2015242979A JP2015242979A JP2016055867A JP 2016055867 A JP2016055867 A JP 2016055867A JP 2015242979 A JP2015242979 A JP 2015242979A JP 2015242979 A JP2015242979 A JP 2015242979A JP 2016055867 A JP2016055867 A JP 2016055867A
vehicle skeleton
JP2015242979A
JP6286411B2 (en
正 山路
Yasuji Suzukii
康司 鈴木
穣 八木
雅智 手島
Masatomo Teshima
2011-02-03 Priority to JP2011021650 priority Critical
2011-02-03 Priority to JP2011021650 priority
2015-12-14 Application filed by 帝人株式会社, Teijin Ltd filed Critical 帝人株式会社
2016-04-21 Publication of JP2016055867A publication Critical patent/JP2016055867A/en
2018-02-28 Publication of JP6286411B2 publication Critical patent/JP6286411B2/en
210000002356 Skeleton Anatomy 0 abstract title 4
229920000311 Fiber-reinforced composite Polymers 0 abstract 1
239000003733 fiber-reinforced composites Substances 0 abstract 1
PROBLEM TO BE SOLVED: To provide a vehicle skeleton member including a member formed of a composite material of a thermoplastic resin and a reinforced fiber which imparts a high bonding strength to a fastened site of the composite material, and has a sufficient strength as a vehicle structure.SOLUTION: A vehicle skeleton member includes a fastened surface fastened by vibration welding a plurality of members having a two-dimensionally random fiber-reinforced composite material containing a thermoplastic resin and a chopped fiber which is oriented in two-dimensionally random form, and includes an axis parallel to a front-rear direction of a vehicle and/or a right-left direction of the vehicle in the fastened surface. A ratio of the fastened surface is 50-100% of the area of the fastened surface.SELECTED DRAWING: Figure 3
The present invention relates to a vehicle skeleton member including a member composed of a composite material of a thermoplastic resin and a reinforced fiber, and particularly relates to a vehicle skeleton member that is lightweight and excellent in strength.
Current vehicle frame members generally have a structure in which steel is sheet-metal processed and combined by spot welding.
The vehicle skeleton member has a very complicated shape to provide a reinforcing structure for increasing the rigidity of the vehicle body and a living space, but the robotized spot welding technology requires a large restriction on the shape of the joint. High productivity is possible.
On the other hand, in recent years, in order to reduce the environmental load of automobiles, reduction of vehicle body weight has been strongly desired, and attempts have been made to apply carbon fiber composite materials to vehicle frame members. These carbon fiber composite material vehicle skeleton members are significantly lighter than existing steel vehicle skeleton members, but because they follow the complex shape of existing steel vehicle skeleton members, expensive carbon It uses fiber fabrics and is molded using hand lay-up and autoclave methods that have low productivity. Therefore, its spread is extremely limited from the economical aspect. Recently, attempts have been made to improve productivity by using an RTM method (resin transfer molding method) or the like (see Patent Document 1). However, the curing reaction time of a thermosetting resin used as a matrix is rate-determined, so that It is hard to say that this technology can be applied to vehicles.
Moreover, in applying a fiber reinforced composite material to a vehicle skeleton member, joining of fiber reinforced composite materials and joining of other materials such as a fiber reinforced composite material and a metal are problems. The fiber reinforced composite material is lightweight and high-strength, but it is not preferable to apply a local load such as bolt fastening. Therefore, many structures for dispersing the load of the fastening portion have been proposed. Patent Document 2 shows an example of a fiber reinforced composite material mounting structure. Although it is possible to avoid stress concentration at the fastening portion by these structures, there is a limit to improvement in productivity because the structure becomes complicated.
On the other hand, as a means for improving the productivity of fiber reinforced composite materials, thermoplastic fiber reinforced composite materials using a thermoplastic resin as a matrix have been developed. The thermoplastic fiber reinforced composite material can be heated and plasticized, and can be given a shape with a short tact by stamping, and the press pressure required for stamping is lower than that for steel stamping. If it is about the size of the floor, it can be integrally molded. In addition, since the thermoplastic fiber reinforced composite material can be softened by reheating, it is one of the characteristics that bonding by welding is possible.
JP 2008-68720 A JP 2006-64010 A
The present invention relates to a vehicle skeleton member including a member composed of a composite material of a thermoplastic resin and a reinforcing fiber, and a vehicle having sufficient strength as a vehicle structure by giving a high joint strength to a fastening portion of the composite material. It aims at providing a frame member.
The present inventors have constructed a vehicle skeleton member from a composite material of a thermoplastic resin and a reinforcing fiber, fastened the composite material by vibration welding, and further a fastening surface suitable for fastening by vibration welding, a vehicle structure It was found that the title problem can be solved by adopting the design.
That is, the vehicle skeleton member of one embodiment of the present invention includes a fastening surface in which a plurality of members having a two-dimensional random fiber reinforced composite material including a thermoplastic resin and two-dimensional randomly oriented chopped fibers are fastened by vibration welding. The fastening surface includes an axis parallel to the longitudinal direction of the vehicle body and / or the lateral direction of the vehicle body, and the proportion of the fastening surface is 50 to 100% of the fastening portion area.
In addition, the method for manufacturing a vehicle skeleton member according to one aspect of the present invention includes a plurality of members including a two-dimensional random fiber reinforced composite material including a thermoplastic resin and two-dimensional randomly oriented chopped fibers. Alternatively, vibration welding is performed by vibrating in an axial direction parallel to the left-right direction of the vehicle body, whereby the plurality of members are fastened by the vibration-welded fastening surface, and the proportion of the fastening surface is 50 to 100 of the fastening portion area. % Vehicle skeleton member.
According to the present invention, the vehicle skeleton member includes a portion where a plurality of members having a composite material of a thermoplastic resin and a reinforcing fiber are fastened, and the fastening surface thereof is parallel to the vehicle longitudinal direction and / or the vehicle lateral direction. In addition, a plurality of members can be simultaneously attached without installing a vibration welding device or a jig for each fastening portion by making the fastening surface into a plane including the shaft and / or a curved surface having an equivalent cross-sectional shape. It can be fastened by vibration welding. In addition, the fastening by vibration welding can obtain a higher joining strength in a shorter time than the joining by a normal adhesive, and requires almost no adhesive or metal fastening member, so that a vehicle structure excellent in weight reduction can be obtained. It can be obtained with high productivity.
It is a schematic diagram of a planar fastening surface and vibration direction. It is a schematic diagram of the fastening surface and vibration direction of an equal cross-sectional shape. It is a schematic diagram which shows the Example of the vehicle frame member of this invention. It is a schematic diagram which shows the structure of the vehicle frame member of this invention. It is a schematic diagram which shows the assembly method in case a vehicle frame member is an underfloor structural component. It is a schematic diagram which shows the assembly method in case a vehicle frame member is an underfloor structural component. It is a schematic diagram which shows the cross-sectional shape of the vibration welding part of an underfloor structure component. It is a schematic diagram which shows the assembly method in case a vehicle frame member is an upper floor structure component. It is a schematic diagram which shows the assembly method in case a vehicle frame member is an upper floor structure component. It is a schematic diagram which shows the cross-sectional shape of the vibration welding part of an upper floor structure component. It is a schematic diagram which shows the assembly method in case a vehicle frame member is a side sill structure component. It is a schematic diagram which shows the cross-sectional shape of the vibration welding part of a side sill structure component. It is a schematic diagram which shows the assembly method in case a vehicle frame member is a vehicle body superstructure part. It is a schematic diagram which shows the assembly method in case a vehicle frame member is a vehicle body superstructure part. It is a schematic diagram which shows the cross-sectional shape of the vibration welding part of a vehicle body upper structure component. It is a schematic diagram which shows the assembly method in case each structural component is integrated and a vehicle frame member is comprised. It is a schematic diagram which shows the cross-sectional shape of the vibration welding part of the integrated vehicle frame member.
1 Vehicle frame member 2 Under floor structure parts (2a, 2b, 2c, 2d parts)
3 Upper floor structure parts (3a, 3b, 3c, 3d, 3e, 3f, 3g parts)
4 Side sill structural parts (4a, 4b, 4c parts)
5 Side sill structural parts (5a, 5b, 5c parts)
6 Car body superstructure parts (pillar roof)
(6a, 6b, 6c, 6d, 6e, 6f parts)
Hereinafter, embodiments of the present invention will be sequentially described.
[Vehicle frame members]
The vehicle skeleton member of the present invention is a member that constitutes the body of an automobile. Specific examples thereof include a floor structure component, a side sill structure component, a vehicle body upper structure component including a pillar / roof rail, and the like, and a composite thereof. The vehicle skeleton member includes a member made of a composite material of a thermoplastic resin and a reinforcing fiber, and has a portion where these members made of the composite material are fastened. For vehicle frame members, in addition to members composed of composite materials of thermoplastic resin and reinforcing fibers, members composed of materials other than composite materials such as metals and ceramics, composite materials whose matrix is a thermosetting resin, etc. You may have. From the viewpoint of reducing the weight of the vehicle body, it is preferable that the ratio of the members made of the composite material in the vehicle skeleton member is high. Specifically, the weight ratio of the member made of the composite material in the vehicle skeleton member is 50% or more, more preferably 80% or more and 100% or less.
[Vibration welding and fastening surface]
Vibration welding is a method in which two members (resin parts, etc.) are brought into contact with each other under pressure, and the resin is melted and joined by frictional heat generated between the two members by periodically vibrating. The vibration welding machine can be used. In the vehicle skeleton member of the present invention, the thermoplastic resin that is the matrix of the composite material is melted and fastened by vibration.
The vehicle skeleton member according to the present invention is characterized in that the vehicle skeleton member is designed such that an axis parallel to the longitudinal direction of the vehicle body and / or the lateral direction of the vehicle body is included in a fastening surface to which vibration welding is performed. That is, the vehicle skeleton member of the present invention has a portion fastened by vibration welding by arranging a fastening portion so that an axis parallel to the longitudinal direction of the vehicle body and / or the lateral direction of the vehicle body is included in the fastening surface. Features. Here, the term “parallel” does not need to be completely parallel, and a deviation of about plus or minus 10 degrees can be tolerated. Also in this case, it is preferable that the plurality of fastening surfaces are displaced at a constant angle.
The vehicle skeleton member may have a fastening surface that does not include an axis parallel to the longitudinal direction of the vehicle body and / or the lateral direction of the vehicle body, but the fastening includes an axis parallel to the longitudinal direction of the vehicle body and / or the lateral direction of the vehicle body. The surface ratio is preferably 50 to 100% of the fastening portion area. Furthermore, it is preferable that the ratio of the fastening surface including parallel axes is 80 to 100% of the fastening part area.
In the present invention, the fastening area refers to a design fastening area that is individually set according to the type of fastening method when designing the strength of fastening parts between parts or members or between parts and members. The area is different. For example, in FIGS. 7, 10, 12, 15, and 17, a portion indicated by an arrow in the cross-sectional view is a vibration welding portion, and a total area of these portions is a fastening area. The sum total of the fastening areas of all fastening parts in the vehicle frame member is defined as the total fastening area.
When the vehicle skeleton member is produced at a commercial level, it is preferable that the ratio of the fastening surface including the axis parallel to the vehicle longitudinal direction and / or the vehicle lateral direction is high in the vehicle skeleton member. Specifically, it is preferable that 50% or more of all fastening portions include an axis parallel to the longitudinal direction of the vehicle body and / or the lateral direction of the vehicle body. Furthermore, it is preferable that 80% or more of all the fastening portions include an axis parallel to the longitudinal direction of the vehicle body and / or the lateral direction of the vehicle body.
A fastening surface that does not include an axis parallel to the longitudinal direction of the vehicle body and / or the lateral direction of the vehicle body in the vehicle skeleton member can also be fastened by vibration welding by adjusting the direction of the vibration welding apparatus or jig each time. However, it is also possible to fasten appropriately by a method other than vibration welding.
Since the production line is preferably arranged on an axis parallel to the front-rear direction and / or the left-right direction of the vehicle, the fastening surface of the composite material constituting the vehicle skeleton member is set to the front-rear direction and / or the left-right direction of the vehicle. Are preferably designed to include parallel axes.
When producing a vehicle skeleton member at a commercial level, it is preferable in terms of production efficiency that a plurality of fastening surfaces of the vehicle skeleton member are in the same direction. Specifically, the ratio of the fastening surface in the same direction to the total fastening area is preferably 50 to 100%, more preferably 80 to 100%. Here, the definition of the fastening area is as described above.
Specifically, with respect to the number of fastening surfaces, it is preferable that 50% or more of all fastening locations are in the same direction, and more than 80% are in the same direction.
In order to fasten by vibration welding, the fastening surface between the composite materials in the vehicle skeleton member is preferably a flat surface and / or a curved surface having an equal cross-sectional shape. A curved surface having an equal cross-sectional shape is a shape in which a plane having a curve is extruded in parallel. Examples of the cross-sectional shape include a circle, an ellipse, a semicircle, and a kamaboko shape. FIG. 1 shows the relationship between the planar fastening surface and the vibration direction, and the vibration direction can be arbitrarily selected within the surface. FIG. 2 shows the relationship between the fastening surface having the same cross-sectional shape and the vibration direction. In this case, the vibration direction is limited to the extrusion direction of the equal cross-section. In addition, when the fastening surface is other than a flat surface and / or a curved surface having an equal cross-sectional shape, the fastening surface can be appropriately fastened by a method other than vibration welding.
In the vehicle frame member of the present invention, 50% to 100% of the total fastening area of the composite material is preferably fastening by vibration welding. Here, the definition of the fastening area is as described above. The vehicle skeleton member may include a fastening portion that does not depend on vibration welding, but it is preferable to increase the fastening rate by vibration welding from the viewpoint of weight reduction. More preferably, 70 to 100% of the total fastening area is fastening by vibration welding. Further, with respect to the fastening surface, it is preferable that 50% or more of all fastening locations are fastening by vibration welding, and further 80% or more is fastening by vibration welding.
As a fastening method other than vibration welding in a composite material, a method using an adhesive, a method of mechanical fastening with bolts and nuts, a matrix resin thermoplastic resin by heat melting and bonding using a method other than vibration, and the like are known. The method is used.
In vibration welding, a clearance is required to vibrate and melt the fastening surface by friction. For example, since a known vibration welding apparatus requires a clearance of about 2 mm in the vibration direction, a member shape that allows clearance to be provided on the roof rail is used, and a method other than vibration welding is used in combination at a portion where it is difficult to secure the clearance. It is also possible.
As the reinforcing fiber constituting the composite material, various fibers according to the use of the fastening structure can be used, but glass fiber, polyester fiber, polyolefin fiber, carbon fiber, para-aramid fiber, meta-aramid fiber, boron fiber, At least one selected from the group consisting of azole fiber, alumina fiber and the like is mentioned as a preferable one, and carbon fiber excellent in specific strength and specific elasticity is particularly preferable.
The form of the reinforcing fiber in the composite material may be a discontinuous fiber or a continuous fiber, and two or more of these may be used in combination. The discontinuous fiber is specifically a short fiber having a fiber length of less than 0.1 to 10 mm or a long fiber having a fiber length of 10 mm to 100 mm. Of course, the continuous fiber is discontinuous depending on the size and shape of the member. Therefore, a fiber having a fiber length of more than 100 mm is regarded as a continuous fiber. In the case of discontinuous fibers, paper made using chopped strands or the like, or a two-dimensional random mat is preferable. In the case of continuous fibers, a woven or knitted fabric, a unidirectionally arranged sheet-like strand, a sheet such as a multiaxial woven fabric, or a non-woven fabric is preferred. In addition, multiaxial woven fabrics are generally nylon yarns, polyester yarns, glass fibers, which are bundles of fiber reinforcements that are aligned in one direction and are laminated at different angles (polyaxial woven fabric base material). This refers to a woven fabric that is stitched by stitches such as yarns, penetrates the laminate in the thickness direction, and reciprocates between the front and back surfaces of the laminate along the surface direction. The fiber reinforced material constituting the fiber reinforced composite material molded body may be one in which reinforcing fibers are randomly dispersed or one having a specific fiber orientation, one in which reinforcing fibers are plane-oriented or uniaxially oriented, or those A combination or a laminate thereof is preferable.
Among them, the fiber reinforced composite material is preferably a random fiber reinforced composite material in which chopped fibers are randomly oriented in a thermoplastic resin. Furthermore, a two-dimensional random fiber reinforced composite material in which chopped fibers are two-dimensionally randomly oriented in a thermoplastic resin is extremely excellent in moldability and has a complex shape including not only a planar shape but also a curved portion. It can also be used as a member, which is preferable. Those in which these random fiber reinforced composite materials are combined with other types of fiber reinforced composite materials or laminated materials can be suitably used for the vehicle skeleton member of the present invention.
The fiber reinforced composite material may be a laminate or a sandwich structure having a fiber reinforced composite material layer and a resin-only layer or a fiber reinforced composite material layer in which the type of the reinforced fiber is changed. In the case of a sandwich structure, the core member may be a composite material and the skin member may be a resin. Conversely, the core member may be a resin-only portion and the skin member may be a composite material.
The weight ratio of reinforcing fiber / thermoplastic resin in the fiber-reinforced composite material is preferably 20/80 to 80/20. More preferably, it is 30 / 70-70 / 30.
Specific examples of the thermoplastic resin include polycarbonate resin, polyolefin resin, polyester resin, acrylic resin, polylactic acid, polyamide resin, ASA resin, ABS resin, polyether ketone resin, polyether imide resin, polyphenylene ether resin, polyphenylene. Examples thereof include an oxide resin, a polysulfone resin, a polyethersulfone resin, a polyetherimide resin, a polyetheretherketone resin, a polyphenylene sulfide resin, a polyamideimide resin, and a mixture (resin composition) of two or more selected from these resins. There is no particular limitation.
Although the specific example of embodiment of this invention is demonstrated using FIGS. 3-17, this invention is not restrict | limited to these.
FIG. 3 is a schematic view showing a vehicle skeleton member according to an embodiment of the present invention. As shown in FIG. 4, the vehicle skeleton member 1 in this embodiment includes an under floor structural component 2, an upper floor structural component 3, left and right side sill structural components 4 and 5, and a vehicle body upper structural component 6 including pillars and roof rails. Consists of As in this embodiment, the under-floor structural component 2, the upper floor structural component 3, the side sill structural components 4 and 5, and the vehicle body upper structural component 6 may be combined to form a vehicle skeleton member. A composite of two or more structural parts may be used as the vehicle skeleton member.
FIGS. 5 to 6 show an assembling method when the vehicle frame member is the underfloor structural component 2. The underfloor structure component 2 can be manufactured by vibrating and welding the component 2a and the component 2b to manufacture the component 2c, and by vibrating and welding the component 2c to the lower surface of the component 2d. Here, the component 2c may be manufactured by being divided into a component 2a and a component 2b, or may be integrally formed. When the parts 2c and 2d are welded by vibration, a clearance is required in the front-rear direction and the rising portion of the part 2c cannot be welded by vibration. Therefore, it is desirable to use a method other than vibration welding.
FIG. 7 shows a cross-sectional shape of the vibration welded portion of the underfloor structural component 2, and an arrow in the cross-sectional view is a vibration welded portion.
FIGS. 8 to 9 show an assembling method when the vehicle frame member is the upper floor structural component 3. The parts 3a and 3b are vibration welded to produce the parts 3c, the parts 3d and 3e are vibration welded and then vibration welded to the parts 3c, and the parts 3f are vibration welded to the parts 3c. The part 3g may have a structure that can be removed as a cover for storing the battery in the floor, or may be joined to the part 3c by vibration welding. Here, the part 3a, the part 3b, and the part 3e may be divided and manufactured and then joined by vibration welding, or may be integrally formed in a mold. FIG. 10 shows the cross-sectional shape of the vibration welded portion of the upper floor structural component 3, and the arrow in the cross-sectional view is the vibration welded portion.
FIG. 11 shows an assembling method in the case where the vehicle skeleton member is the side sill structural parts 4 and 5. The side sill structure parts 4 and 5 can be manufactured by vibration welding the parts 4a and 4b and the parts 5a and 5b and then vibration welding the parts 4c and 5c, respectively. FIG. 12 shows the cross-sectional shape of the vibration welded portion of the side sill structural component 4, and the arrow in the sectional view is the vibration welded portion.
FIGS. 13 to 14 show an assembling method when the vehicle skeleton member is the vehicle body superstructure part 6. The parts 6a and 6b are vibration welded to produce a pair of left and right pillars 6c. Here, the component 6a and the component 6b may be manufactured separately, or may be integrally formed with a hollow body. Thereafter, the roof rail 6f is manufactured by vibration welding so that the component 6d is sandwiched between the components 6e, and the pillar 6c and the roof rail 6f are joined by vibration welding. Here, the part 6d may be manufactured by dividing the part 6e, or may be integrally formed. FIG. 15 shows a cross-sectional shape of the vibration welded portion of the vehicle body upper structural component 6, and an arrow in the cross-sectional view is the vibration welded portion.
FIG. 16 shows an assembling method in a case where the underbody structural component 2, the upper floor structural component 3, the left and right side sill structural components 4 and 5, and the vehicle body upper structural component 6 including pillars and roof rails are integrated into a vehicle body frame member.
The vehicle body skeleton member 1 is integrated by vibration welding the under floor structural component 2 and the side sill structural components 4 and 5, and then vibration welding the upper floor structural component 3 and further vibration welding the vehicle body upper structural component 5. Is produced. FIG. 17 shows a cross-sectional shape of the vibration welded portion of the vehicle body skeleton member 1 integrated. An arrow portion in the cross-sectional view is the vibration welded portion.
A plurality of members having a two-dimensional random fiber reinforced composite material including a thermoplastic resin and two-dimensional randomly oriented chopped fibers include a fastening surface fastened by vibration welding, and a vehicle body longitudinal direction and / or in the fastening surface A vehicle skeleton member including an axis parallel to the left-right direction of the vehicle body and having a fastening surface ratio of 50 to 100% of a fastening part area.
The vehicle skeleton member according to claim 1, wherein the plurality of members are made of only a composite material having a thermoplastic resin as a matrix.
The vehicle skeleton member according to claim 1, wherein the fastening surface is a flat surface and / or a curved surface having an equal cross-sectional shape.
The vehicle frame member according to any one of claims 1 to 3, wherein the vehicle frame member is a floor structure component.
The vehicle frame member according to any one of claims 1 to 3, wherein the vehicle frame member is a side sill structural component.
The vehicle skeleton member according to claim 1, wherein the vehicle skeleton member is a vehicle body superstructure part.
The vehicle skeleton member according to any one of claims 1 to 6, wherein the reinforcing fibers are carbon fibers.
The fastening surface includes a fastening surface fastened by vibration welding whose vibration direction is the vehicle body longitudinal direction, and a fastening surface fastened by vibration welding whose vibration direction is the vehicle body left-right direction. The vehicle skeleton member according to claim 1.
A plurality of members having a two-dimensional random fiber reinforced composite material including a thermoplastic resin and two-dimensional randomly oriented chopped fibers are vibrated by vibrating in a longitudinal direction parallel to the longitudinal direction of the vehicle body and / or the lateral direction of the vehicle body. A method of manufacturing a vehicle skeleton member, wherein the vehicle skeleton member is manufactured by welding, wherein the plurality of members are fastened by a vibration-welded fastening surface, and a ratio of the fastening surface is 50 to 100% of a fastening portion area. .
The method for manufacturing a vehicle frame member according to claim 9, wherein the plurality of members are made of only a composite material having a thermoplastic resin as a matrix.
The method of manufacturing a vehicle skeleton member according to claim 9 or 10, wherein the vehicle skeleton member has a plurality of fastening surfaces.
The method for manufacturing a vehicle skeleton member according to any one of claims 9 to 11, wherein the plurality of members are vibration welded simultaneously.
The method for manufacturing a vehicle skeleton member according to any one of claims 9 to 12, wherein the fastening surface is a flat surface and / or a curved surface having an equal cross-sectional shape.
The method for manufacturing a vehicle skeleton member according to any one of claims 9 to 13, wherein vibration directions of vibration welding for fastening the plurality of members are a vehicle body longitudinal direction and a vehicle body lateral direction.
The method for manufacturing a vehicle frame member according to any one of claims 9 to 14, wherein the vehicle frame member is a floor structure component.
The method for manufacturing a vehicle skeleton member according to claim 9, wherein the vehicle skeleton member is a side sill structural component.
The method for manufacturing a vehicle frame member according to any one of claims 9 to 14, wherein the vehicle frame member is a vehicle body superstructure part.
The method for manufacturing a vehicle skeleton member according to any one of claims 9 to 17, wherein the reinforcing fibers are carbon fibers.
JP2015242979A 2011-02-03 2015-12-14 Method for manufacturing vehicle skeleton member Active JP6286411B2 (en)
JP2011021650 2011-02-03
JP2012556006 Division 2012-02-01
JP2016055867A true JP2016055867A (en) 2016-04-21
JP6286411B2 JP6286411B2 (en) 2018-02-28
ID=46602914
JP2012052797A Pending JPWO2012105717A1 (en) 2011-02-03 2012-02-01 Vehicle frame member
JP2015242979A Active JP6286411B2 (en) 2011-02-03 2015-12-14 Method for manufacturing vehicle skeleton member
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KR101886897B1 (en) 2018-08-08
JPWO2012105717A1 (en) 2014-07-03
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