JP2008045736A - Resin member, and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resin member and a method for manufacturing the resin member reducing cost and compatibly providing rigidity and energy absorbing performance. <P>SOLUTION: The resin member 1 comprising a body part 2 made of resin is provided with a buffer part for dispersing external input load, on the side to which external input load is applied, and a plastically deformable reinforcing member 3 fixed to the body part 2, on the opposite side to the side to which external input load is applied, of the buffer part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a resin member in which a reinforcing member is provided in a hollow portion formed inside, and a method for manufacturing the resin member.

  In recent years, for example, in structural members for vehicles, resins have been used for weight reduction, and in particular, FRP (fiber reinforced plastic) reinforced with fiber material is used. When manufacturing a structural member by FRP, a molding method that is a continuous fiber is preferred from the viewpoint of strength performance. For example, an autoclave or RTM (resin injection molding method) is used. When such a forming method is used, a honeycomb material or a urethane material is inserted into the FRP to further improve the strength (for example, see Patent Document 1).

  However, for example, when a honeycomb material excellent in rigidity, performance with respect to static load, and performance with respect to dynamic load (energy absorption performance) is inserted, the cost is high and it is not preferable as a mass-produced product.

For example, when filling or installing urethane material inside the structural member, if rigidity is important, high-density urethane material will be used, and deformation of the structural member when dynamic load is applied Since the amount decreases and the energy absorption performance decreases, it is difficult to achieve both rigidity and energy absorption performance.
JP-A-9-131817

  The present invention has been made in order to solve the problems associated with the above-described prior art, and provides a resin member that can reduce costs and achieve both rigidity and energy absorption performance, and a method for manufacturing the resin member. Objective.

  The resin member according to the present invention that achieves the above object is a resin member having a resin main body, and is provided with a buffer portion that disperses the external input load on the side on which the external input load acts. A reinforcing member capable of plastic deformation fixed to the main body is provided on the side opposite to the side on which the external input load acts on the buffer.

  The method for manufacturing a resin member according to the present invention that achieves the above object is a method for manufacturing a resin member including a resin main body, and the buffer portion disperses the external input load on the side on which the external input load acts. And a reinforcing member capable of plastic deformation is arranged on the side opposite to the side on which the external input load acts on the buffer portion and fixed to the main body portion.

  The resin member according to the present invention configured as described above is provided with an external input load because a reinforcing member capable of plastic deformation is installed on the side opposite to the side on which the external input load acts on the buffer portion. In this case, since the load is received by the reinforcing member after the load is gradually applied from the buffer portion, the rigidity can be maintained while absorbing energy. Moreover, since it is not necessary to use expensive members such as honeycomb materials, the cost can be reduced.

  The method of manufacturing a resin member according to the present invention configured as described above is manufactured because a reinforcing member capable of plastic deformation is installed on the side opposite to the side on which the external input load acts on the buffer portion. When an external input load is applied to the resin member, the resin member receives the load by the reinforcing member after the load is gradually applied from the buffer portion. Accordingly, a resin member capable of maintaining rigidity while absorbing energy can be manufactured, and it is not necessary to use an expensive member such as a honeycomb material, so that the cost can be reduced.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

<First Embodiment>
FIG. 1 is a sectional view of a resin member according to the first embodiment of the present invention, and FIG. 2 is a sectional view showing a reinforcing member of the resin member.

  As shown in FIGS. 1 and 2, the resin member 1 according to the first embodiment includes a main body 2 made of fiber reinforced plastic (FRP) and a reinforcing member 3 attached to the main body 2. Have. In this embodiment, the FRP of the main body 2 is, for example, CFRP using an epoxy resin as a matrix resin.

  The fiber applied to the FRP of the main body 2 is not particularly limited as long as it is a reinforcing material. In addition to carbon fiber, for example, graphite fiber or glass fiber, aramid, paraphenylene benzobisoxazole, polyvinyl Examples include organic fibers such as alcohol and polyarylate, or those using two or more of these in combination.

  As the resin applied to the FRP of the main body 2, any resin can be used as long as it becomes a matrix resin of FRP. In addition to the epoxy resin, for example, unsaturated polyester resin, vinyl ester resin, phenol Thermosetting resins such as resins, thermoplastic resins such as polyester, polyolefin, and polyamide resin, and mixed resins thereof can also be used.

  As for the main-body part 2, the hat-shaped outer member 4 and the inner member 5 are joined so that the hollow part 6 may be formed inside. In addition, as long as the hollow part 6 is formed in the inside, the shape and the number of members of the main body part 2 are not limited. For example, one member or three or more members may be joined.

  The resin member 1 according to the present embodiment is, for example, a vehicle member, and the outer member 4 is the outside of the vehicle and the inner member 5 is the inside of the vehicle. Therefore, an external input load from the outer member 4 side acts due to a collision or the like.

  The outer member 4 may be made thinner than the inner member 5, or only the thickness of the portion where the external input load acts may be made thinner. In this case, since the outer member 4 is easily broken, the initial reaction force when an external input load is applied can be reduced. For example, when the resin member 1 is a vehicle member, The load on passengers can be reduced.

  The reinforcing member 3 is joined to the inner side surface of the inner member 5 (the side opposite to the side on which the external input load acts on the hollow portion 6) with an adhesive 10. At this time, a space is provided between the reinforcing member 3 and the outer member 4. The outer member 4 and the interval function as a buffer when an external input load is applied.

  As shown in FIG. 2, the reinforcing member 3 includes a rigid holding portion 7 and a tensile holding portion 9. The rigid holding portion 7 holds strength while reducing the weight in the present embodiment. For this purpose, an aluminum extruded material is used, but other materials may be used as long as they can be plastically deformed, and the shape is not limited.

The tension holding unit 9 is installed on the side of the rigid holding unit 7 to be joined with the inner member 5. The tension holding unit 9 is CFRP, which is a prepreg obtained by impregnating carbon fiber with an epoxy resin. The tension holding part 9 is F which uses other fibers like the FRP described above in the main body part 2.
RP can also be applied. In addition, an epoxy resin is used for the tension holding portion 9, but any resin can be used as long as it becomes a matrix resin of FRP in the main body portion 2 as described above.

  The direction of the fibers used for the tension holding portion 9 matches the tension direction generated when an external input load is applied to the resin member 1 and corresponds to the depth direction of the drawings in FIGS. To do.

  As the adhesive 10 for joining the reinforcing member 3 to the inner member 5, an adhesive having an elongation of 30% or more is preferably used. In this embodiment, for example, the elongation is 50% and the tensile shear strength is 20 MPa. An acrylic adhesive is used.

  The operation of the resin member 1 according to this embodiment will be described.

  When an external input load is applied to the resin member 1 from the outer member 4 side, since a space is formed between the outer member 4 and the reinforcing member 3, no load is directly input to the reinforcing member 3, Crack extension, delamination, and the like occur from the resin main body 2. Therefore, energy is absorbed by the destruction of the main body 2 and the initial reaction force can be kept low. For this reason, the influence on the inner member 5 side (for example, the vehicle interior side) of the resin member 1 immediately after the external input load is applied can be reduced.

  After the main body 2 is destroyed, the load is transmitted to the reinforcing member 3. Thereby, an input load can be received by the reinforcing member 3, and the fall of the maintenance load of a structure can be suppressed.

  Further, since the rigid holding portion 7 of the reinforcing member 3 can be plastically deformed, it can absorb energy and reduce the impact of the resin member 1 on the inner member 5 side.

  In addition, the reinforcing member 3 attached to the opposite side of the outer member 4 is deformed to the inner member 5 side by a load input from the outer member 4 side. At this time, the tension holding portion 9 is the inner member 5 of the reinforcing member 3. Since the tension holding portion 9 is provided on the side, a tensile force is generated. The tensile holding portion 9 is strong in tensile force because the FRP fiber matches the tensile direction, and can suppress a decrease in the maintenance load of the structure.

  Further, since the reinforcing member 3 is provided on the side opposite to the side to which the load is applied, the degree of freedom of modeling on the side to which the load is applied is improved, and the internal reinforcing member 3 is subjected to shape constraints from the modeling surface. hard.

  Further, since it is not necessary to use an expensive material such as a honeycomb material, the material cost can be reduced.

  Moreover, since the elongation of the adhesive 10 for joining the reinforcing member 3 to the main body 2 is 30% or more, the adhesive 10 absorbs the deformation difference when the reinforcing member 3 or the main body 2 is deformed, The reinforcing member 3 and the main body 2 are not completely peeled off, and the strength can be maintained. Moreover, when using electroconductive materials, such as aluminum, for the rigid holding | maintenance part 7, the contact bonding layer formed with the adhesive agent 10 can play the role of electrical contact prevention.

  Moreover, in this embodiment, since the reinforcing member 3 is provided as a separate part from the main body 2, the main body 2 can be formed separately from the reinforcing member 3, thereby enabling molding by the RTM method or the like, and excellent mass productivity. .

As described above, according to the present embodiment, while the rigidity is maintained by the reinforcing member 3, energy can be absorbed by the destruction of the main body 2, and both rigidity and energy absorption performance can be achieved.

<Second Embodiment>
FIG. 3 is a sectional view of a resin member according to the second embodiment of the present invention. In addition, about the site | part which has the same function as 1st Embodiment, the same code | symbol is used and in order to avoid duplication, the description is abbreviate | omitted.

  In the resin member 1 ′ according to the second embodiment, a preliminary reinforcing material 11 having a rigidity lower than that of the reinforcing member 3 is provided between the reinforcing member 3 and the outer member 4. The preliminary reinforcing material 11 is, for example, a urethane material, but may be another material as long as the rigidity is lower than that of the reinforcing member 3. The outer member 4 and the preliminary reinforcing material 11 function as a buffer portion when an external input load is applied.

  When an external input load is applied to the resin member 1 ′ according to the second embodiment from the outer member 4 side, crack extension or delamination occurs from the main body 2, and the load is dispersed by the preliminary reinforcing material 11. While being done, a load is input to the reinforcing member 3. Therefore, the initial reaction force is larger than that in the first embodiment.

<Third Embodiment>
The structure of the resin member according to the third embodiment is substantially the same as that of the first embodiment shown in FIGS. 1 and 2, and the reinforcing fibers applied to the inner member 5 that is a fiber-reinforced plastic have a predetermined orientation. It differs only in having it.

  In the inner member 5 of the resin member according to the third embodiment, the fibers are oriented in the same direction (0 degree) and perpendicular direction (90 degrees) as the tensile direction generated in the inner member 5 when an external input load is input. The first cloth material arranged and the second cloth material in which fibers are arranged in two directions (+45 degrees and -45 degrees) inclined with respect to the tensile direction are overlapped to form reinforcing fibers, which are formed by an RTM method or the like. The two directions inclined with respect to the pulling direction are not necessarily +45 degrees and −45 degrees, and may be +30 degrees and −30 degrees, for example. Further, a plurality of first cloth materials and second cloth materials may be stacked, and cloth materials having other orientations may be further stacked.

  The 1st cross material which has the orientation of the same direction as a tension direction has high tensile strength, and suppresses the fall of the maintenance load of a structure.

  The second cloth material having an orientation inclined with respect to the tensile direction has a large breaking strain because a texture can be spread when a load is applied. Thereby, the followable | trackability to the bending deformation of the inner member 5 improves, and the fracture | rupture of the inner member 5 can be suppressed. Moreover, since the fracture | rupture at the time of the bending deformation of the inner member 5 can be suppressed, the energy absorption amount of a resin-made member can be improved.

<Fourth embodiment>
FIG. 4 shows a sectional view of a resin member according to the fourth embodiment of the present invention. In addition, about the site | part which has a function similar to 1st, 2 embodiment, the same code | symbol is used and in order to avoid duplication, the description is abbreviate | omitted.

  As shown in FIG. 4, the resin member 41 according to the fourth embodiment differs from the first to third embodiments in that the main body portion 42 does not have an outer member and is formed only from the inner member 45. Therefore, the main body portion 42 is not formed with a hollow portion, and the reinforcing member 3 capable of plastic deformation is installed on the side of the inner member 45 where the external input load acts, and the external input load of the reinforcing member 3 (in FIG. 4). The buffer material 43 as a buffer portion is exposed and provided on the side on which the arrow (see arrow) acts. That is, the reinforcing member 3 is provided on the side of the cushioning material 43 opposite to the side on which the external input load acts. The cushioning material 43 is lower in rigidity than the reinforcing member 3 and is, for example, a urethane material. However, other materials may be used as long as the rigidity is lower than that of the reinforcing member 3.

  When an external input load is applied to the resin member 41 according to the fourth embodiment, the external input load is first input from the cushioning material 43. Since the cushioning material 43 has lower rigidity than the reinforcing member 3, the load is dispersed, and thereafter, the load is input to the reinforcing member 3. Therefore, energy is absorbed by the deformation of the buffer material 43, and the initial reaction force can be kept low. For this reason, the influence on the inner member 45 side (for example, the vehicle interior side) of the resin member 41 immediately after the external input load is applied can be reduced.

  Thereafter, the load is transmitted to the reinforcing member 3, and the input load can be received by the reinforcing member 3. Thereby, the fall of the maintenance load of a structure can be suppressed.

  In 4th Embodiment, since an outer member is not required, the expense of an outer member and an assembly man-hour can be reduced, and cost reduction is possible, without reducing performance.

  Next, the impact test regarding each embodiment mentioned above is demonstrated.

  An impact test was performed in which a load was applied to the resin members 1 and 1 ′ according to the first and second embodiments.

  FIG. 5 is a sectional view of the specimen showing the load on the specimen and the displacement of the specimen in the impact test, FIG. 6 is a sectional view showing a steel structure used in the impact test, and FIG. 7 is the impact test result. It is a graph which shows the relationship between a load and a displacement amount.

  The following table shows the structure of the specimen used in each test example.

  Test Example 1 and Test Example 2 are resin members 1 according to the first embodiment, and the thickness of the outer member 4 of the resin member 1 in Test Example 2 is formed thinner than that of Test Example 1. .

  Test Example 3 uses the resin member 1 ′ according to the second embodiment as a specimen. Test Example 4 is a steel structure 21 as shown in FIG.

  The steel structure 21 includes an outer steel plate 22, an inner steel plate 23, a brace 24, and a reinforcing steel plate 25 made of a high-tensile steel plate.

  In the impact test, as shown in FIG. 5, an external input load F is applied from the outer member 4 (or outer steel plate 22) side, and the displacement amount X of the resin member 1 (or steel structure 21) in the load direction is determined. Measured.

  As a result, as shown in FIG. 7, in Test Example 4, the maintenance load decreases after receiving the maximum load, but in Test Examples 1 to 3 corresponding to the first and second embodiments, the maximum load was received. After that, it can be confirmed that the load is maintained by the inner member 5 and the reinforcing member 3.

  Further, in Test Examples 1 to 3, the reinforcing member 3 is attached to the opposite side of the hollow portion 6 from which the external input load is input. It can be confirmed that the initial reaction force can be suppressed.

  Moreover, when Test Example 1 and Test Example 2 are compared, the rise of the load is faster in Test Example 2. This is because, by reducing the plate thickness of the outer member 4 as in Test Example 2 as compared with Test Example 1, the fracture region of the outer member 4 is expanded and the load applied to the reinforcing member 3 is increased. As a result, the same amount of energy absorption as that of the steel structure of Test Example 4 was obtained.

  Moreover, in Test Example 3 corresponding to the second embodiment, the sustain load does not decrease after receiving the load, and an ideal energy absorption mode is obtained, which is about 1.3 of the steel structure of Test Example 4. Double the amount of energy absorption.

  Next, an impact test was performed to compare the case where the reinforcing member 3 was installed on the inner member 5 and the case where the reinforcing member 3 was installed on the outer member 4.

  FIG. 8 is a cross-sectional view showing a specimen in which a reinforcing member is installed on the outer member, and FIG. 9 shows a load as an impact test result for comparing the case where the reinforcing member is installed on the inner member with the case where the reinforcing member is installed on the outer member. It is a graph which shows the relationship of displacement amount.

  The following table shows the structure of the specimen used in each test example.

  Test Example 4 is the same steel structure 21 (see FIG. 6) as described above, and Test Example 5 is a resin member corresponding to the first embodiment in which the reinforcing member 3 is installed on the inner member 5 (FIG. 1). Reference Example) is a specimen, and Test Example 6 is a specimen made of a resin member (see FIG. 8) in which the reinforcing member 3 is installed on the outer member 4.

  The resin member 1 of Test Example 5 has a weight of about 70% compared to the steel structure 21 of Test Example 4.

  As shown in FIG. 9, in Test Example 6 in which the reinforcing member 3 is installed on the outer member 4, the load input to the outer member 4 is first received by the reinforcing member 3. Has also become higher.

  In Test Example 6, along with the deformation of the reinforcing member 3, the outer member 4 is also deformed into a "<" shape and the joint portion with the inner member 5 is elongated, but the inner member 5 that is CFRP has a tensile strength. Since it is high and does not extend so much, peeling is likely to occur at the joint between the outer member 4 and the inner member 5.

  Thus, it can confirm that energy can be absorbed, suppressing initial reaction force by installing the reinforcement member 3 in the inner member 5 like Test example 5 (1st Embodiment).

  Next, an impact test for comparing the first embodiment and the third embodiment was performed.

  FIG. 10 is a graph showing the relationship between the load due to fiber orientation of the inner member and the amount of displacement.

  The following table shows the structure of the specimen used in each test example.

  Test Example 7 uses a resin member (see FIG. 1) corresponding to the first embodiment in which a cloth material having an orientation of 0 degrees and 90 degrees is used for the inner member 5 as a test sample. 8 is a third embodiment in which a first cloth material having an orientation of 0 degrees and 90 degrees and a second cloth material in which fibers are aligned at +45 degrees and -45 degrees are stacked on the inner member 5 to form reinforcing fibers. A resin member corresponding to the form is used as a specimen.

  As shown in FIG. 10, in Test Example 7 corresponding to the first embodiment, the reinforcing fiber breaks and the load decreases due to the increase in displacement, but in Test Example 8 corresponding to the third embodiment, the displacement decreases. The load does not decrease even if the value increases. This is presumed that the texture of the second cloth material having an orientation inclined in the tensile direction spreads and the breaking strain increases, and it can be confirmed that the followability to bending deformation of the inner member 5 is improved.

  FIG. 11 is a stress strain diagram showing a tensile test result using a coupon test piece. As shown in FIG. 11, the coupon test piece of −45, +45 degree orientation has a strain of 5 times or more than the coupon test piece of 0,90 degree orientation, and the fiber is inclined in the tensile direction. It can be confirmed that the followability to deformation is improved by having.

  Next, the impact test for comparing 2nd Embodiment and 4th Embodiment was implemented.

  FIG. 12 is a graph showing the relationship between the load and the displacement amount depending on the presence or absence of the outer member.

  The following table shows the structure of the specimen used in each test example.

  Test Example 9 uses a resin member 1 ′ (see FIG. 3) corresponding to the second embodiment in which the outer member 4 is provided as a specimen, and Test Example 10 is a first example in which no outer member is provided. A resin member 41 (see FIG. 4) corresponding to the fourth embodiment is used as a specimen.

  As shown in FIG. 12, in Test Example 10 corresponding to the fourth embodiment, the load acts on the reinforcing member 3 after being dispersed by the buffer material 43, so that it is compared with Test Example 9 in which an outer member is provided. It can also be confirmed that the amount of energy absorption is not impaired.

  The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims. For example, the main body 2 may be a resin material to which reinforcing fibers are not applied instead of FRP. Further, the reinforcing member 3 may be directly integrated with the FRP portion of the main body 2 without providing the tension holding portion 9 on the reinforcing member 3. Moreover, the inner member in which the fibers in the third embodiment are oriented can be applied to the second and fourth embodiments.

It is sectional drawing of the resin-made members which concern on 1st Embodiment of this invention. It is sectional drawing which shows the reinforcement member of the resin-made members which concern on 1st Embodiment of this invention. It is sectional drawing of the resin-made members which concern on 2nd Embodiment of this invention. Sectional drawing of the resin-made members which concern on 4th Embodiment of this invention is shown. It is sectional drawing of the specimen which shows the load to the specimen in an impact test, and the displacement amount of a specimen. It is sectional drawing which shows the steel structure used for an impact test. It is a graph which shows the relationship between the load and displacement amount which are an impact test result. It is sectional drawing which shows the test body which installed the reinforcement member in the outer member. It is a graph which shows the relationship of the load and displacement amount which are the impact test results for comparing the case where a reinforcement member is installed in an inner member, and the case where it installs in an outer member. It is a graph which shows the relationship between the load by the fiber orientation of an inner member, and a displacement amount. It is a stress strain diagram which shows the tension test result using a coupon test piece. It is a graph which shows the relationship between the load by the presence or absence of an outer member, and a displacement amount.

Explanation of symbols

1,1 ', 41 resin member,
2,42 body part,
3 Reinforcing members,
4 outer member,
5,45 inner member,
6 hollow part,
7 Rigid holding part,
9 Tension holding part,
10 Adhesive,
11 Pre-reinforcement material,
43 cushioning material,
F External input load,
X Displacement amount.

Claims (26)

A resin member provided with a resin main body,
A buffer member for dispersing the external input load is provided on the side on which the external input load acts, and a reinforcing member capable of plastic deformation fixed to the main body on the side opposite to the side on which the external input load acts. A resin member characterized in that is provided. A resin member provided with a resin main body part in which a hollow part is formed,
The resin member according to claim 1, wherein a reinforcing member capable of plastic deformation is installed in the hollow portion on a side opposite to a side on which an external input load acts.   The resin member according to claim 2, wherein a pre-reinforcing material having rigidity lower than that of the reinforcing member is provided in the hollow portion between the side on which an external input load acts and the reinforcing member.   The main body includes an outer member on the side on which an external input load acts and an inner member on the side opposite to the side on which the external input load acts, and the reinforcing member is attached to the outer member. 4. The resin member according to claim 2, wherein the resin member is formed thinner than the member.   2. The resin member according to claim 1, wherein the buffer portion is a buffer material having a lower rigidity than the reinforcing member, which is exposed to a side on which an external input load acts.   The resin body according to any one of claims 1 to 5, wherein the main body is formed of fiber reinforced plastic.   The resin body according to claim 6, wherein the main body is made of carbon fiber reinforced plastic.   Reinforcing fibers in a portion of the main body portion to which the reinforcing member is attached include fibers arranged in the same direction as the tensile direction generated in the portion when an external input load is input, and fibers arranged in an inclined manner with respect to the tensile direction. The resin member according to claim 6 or 7, wherein the resin member is overlapped.   The resin member according to claim 1, wherein the reinforcing member has a metal rigid holding portion.   The resin member according to claim 9, wherein the rigidity holding portion is made of aluminum.   The resin member according to any one of claims 1 to 10, wherein the reinforcing member has a tensile holding portion formed of fiber reinforced plastic on a side fixed to the main body portion.   The resin member according to claim 11, wherein the fibers of the tension holding portion are arranged in the same direction as a tension direction generated in the tension holding portion when an external input load that acts is input.   The resin member according to claim 11 or 12, wherein the tension holding portion is made of carbon fiber reinforced plastic. A method for producing a resin member comprising a resin main body,
A buffer part for dispersing the external input load is provided on the side on which the external input load acts, and a reinforcing member capable of plastic deformation is arranged on the side opposite to the side on which the external input load acts on the body part. A method for producing a resin member, comprising fixing. It is a manufacturing method of a resin member provided with a resin main body portion in which a hollow portion is formed,
The method for manufacturing a resin member according to claim 14, wherein a reinforcing member capable of plastic deformation is installed in the hollow portion on a side opposite to a side on which an external input load acts.   16. The method for producing a resin member according to claim 15, wherein a pre-reinforcing material having rigidity lower than that of the reinforcing member is provided between the side of the hollow portion on which an external input load acts and the reinforcing member.   The main body portion includes an outer member on the side on which an external input load acts, and an inner member on the side opposite to the side on which the external input load acts, to which the reinforcing member is attached, and the outer member The method for producing a resin member according to claim 15 or 16, wherein the thickness is formed thinner than the inner member.   The method for manufacturing a resin member according to claim 14, wherein a buffer material having rigidity lower than that of the reinforcing member, which is exposed to a side on which an external input load acts, is provided as the buffer portion.   The method of manufacturing a resin member according to any one of claims 14 to 18, wherein the main body portion is formed of fiber reinforced plastic.   The method of manufacturing a resin member according to claim 19, wherein the main body portion is formed of a carbon fiber reinforced plastic.   Reinforcing fibers in a portion of the main body portion to which the reinforcing member is attached include fibers aligned in the same direction as the tensile direction generated in the portion when an external input load is input, and fibers aligned in an inclined manner with respect to the tensile direction. The method for producing a resin member according to claim 19 or 20, wherein the resin member is arranged in a stacked manner.   The method for producing a resin member according to any one of claims 14 to 21, wherein the reinforcing member is provided with a metal rigid holding portion.   The method for manufacturing a resin member according to claim 22, wherein the rigid holding portion is formed of aluminum.   The method for producing a resin member according to claim 22 or 23, wherein a tension holding portion made of fiber reinforced plastic is formed on a side of the reinforcing member fixed to the main body portion.   25. The resin member according to claim 24, wherein the tensile holding portion is formed using fibers arranged in the same direction as a tensile direction generated in the tensile holding portion when an external input load that acts is input. Manufacturing method.   26. The method for producing a resin member according to claim 24 or 25, wherein the tensile holding portion is formed of carbon fiber reinforced plastic.

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