JP2015218881A - Component fastening structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a component fastening structure capable of suppressing occurrence of a crack even in a case where stress facing the plane direction of a flat plate material acts.SOLUTION: A component fastening structure fastens a component to an FRP(Fiber Reinforced Plastics)-based flat plate material 100. The flat plate plane material 100 includes a flat plate 13 in which plural flat fiber materials 15 are overlapped, and a columnar roller material 14 in which a flat plate material 15a is wound in a concentric circular shape and which is arranged inside the flat plate 13. Further, the flat plate material 100 includes an opening part 11 formed in the columnar roll material 14, and a collar 12 inserted into the opening 11. In the component fastening structure, a component is fastened to the collar 12 through a fastening tool.

Description

  The present invention relates to a component fastening structure using FRP, and more particularly to a technique for increasing strength against lateral stress.

  Conventionally, when a bolt (fastener) is inserted into a flat plate material made of FRP (Fiber Reinforced Plastics) and various parts are fastened, a metal collar is inserted into the flat plate material to reinforce the bolt. Is inserted and fastened (see, for example, Patent Document 1). When a bolt is fastened by such a method, if a force directed in the lateral direction (plane direction of the flat plate material) acts on the bolt, a shearing force is generated in the flat plate material, and the flat plate material is cracked and damaged. there is a possibility.

JP 2009-204159 A

  As described above, the flat plate material made of FRP is arranged so that the fibers (glass fiber, carbon fiber, etc.) included in the flat plate face the plane direction of the flat plate material, so that the flat plate material is inserted into the bolt inserted into the collar. When a strong force directed in the plane direction is applied, this force cannot be suppressed, and there is a problem that a crack occurs in the plate material.

  The present invention has been made to solve such a conventional problem, and the object of the present invention is to suppress the occurrence of cracks even when a stress directed in the plane direction of the flat plate material is applied. The object is to provide a possible component fastening structure.

  In order to achieve the above object, the present invention is a component fastening structure for fastening a component to a flat plate material made of FRP. The flat plate material includes a flat plate material in which a plurality of flat fiber materials are stacked, and a flat fiber material. It has a cylindrical roll material which is wound concentrically and is arranged inside a flat plate material. Furthermore, it has the opening part formed in the cylindrical roll material, and the color | collar penetrated by the opening part. Then, the parts are fastened through the fasteners to the collar.

  In the component fastening structure according to the present invention, a cylindrical roll material in which a flat fiber material is concentrically wound is inserted into a flat plate material. Therefore, even when a stress directed in the plane direction of the flat plate material acts, It is possible to suppress the occurrence of cracks.

It is explanatory drawing which shows the structure of the component fastening structure which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the structure of the cylindrical roll material used for the component fastening structure which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the procedure which forms the component fastening structure which concerns on 1st Embodiment of this invention, and shows the state which inserted the cylindrical roll material inside the flat plate-shaped board | plate material. It is explanatory drawing which shows the procedure which forms the component fastening structure which concerns on 1st Embodiment of this invention, and shows the state which formed the opening part in the cylindrical roll material. It is explanatory drawing which shows the component fastening structure which concerns on a comparative example. It is explanatory drawing which shows the structure of the component fastening structure which concerns on 2nd Embodiment of this invention. It is explanatory drawing which shows the structure of the cylindrical roll material used for the component fastening structure which concerns on 2nd Embodiment of this invention. It is explanatory drawing which shows the structure of the cylindrical roll material used for the component fastening structure which concerns on 2nd Embodiment of this invention. It is explanatory drawing which shows the procedure which forms the component fastening structure which concerns on 2nd Embodiment of this invention, and shows the state of a flat plate material. It is explanatory drawing which shows the procedure which forms the component fastening structure which concerns on 2nd Embodiment of this invention, and shows the state which inserted the color | collar and the cylindrical roll material in the flat plate-shaped board | plate material. It is explanatory drawing which shows the structure of the cylindrical roll material used for the 1st modification of 1st Embodiment. It is explanatory drawing which shows the structure of the cylindrical roll material used for the 2nd modification of 1st Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Description of First Embodiment]
1A and 1B are explanatory views showing a component fastening structure according to the first embodiment of the present invention. FIG. 1A is a plan view and FIG. 1B is a cross-sectional view. As shown in FIGS. 1A and 1B, the component fastening structure according to the present embodiment includes a flat plate material 100 made of FRP, and an opening 11 is formed at an appropriate position of the flat plate material 100. 11 is formed by inserting a metal collar 12. Then, various parts are fastened by inserting a fastener such as a bolt through the collar 12.

  The flat plate material 100 includes a flat plate member 13 formed by stacking a plurality of flat fiber members 15 and a cylindrical roll member 14 provided at an appropriate position of the flat plate member 13.

  The plate-like fiber material 15 is formed by dispersing short fibers of glass fiber or carbon fiber in the vertical and horizontal directions on the plane and in an oblique direction, and further attaching a binder as necessary to bond the short fibers. Accordingly, the short fibers contained in the flat fiber material 15 are substantially directed in the plane direction. In addition, the direction of a short fiber does not need to be orderly in the vertical / horizontal direction or the diagonal direction, and may be scattered randomly.

  The cylindrical roll material 14 is obtained by winding a long flat fiber material 15a as shown in FIG. 2 (a) in a spiral shape (concentric shape), and the flat fiber material 15a is a flat plate as described above. The same fiber material as the fiber material 15 or a different fiber material can be used.

  Next, a procedure for forming the flat plate material 100 shown in FIG. 1 will be described. First, as shown in FIG. 2 (a), a flat fiber material 15a identical to the flat fiber material 15 described above is formed into a long shape, and this is formed as shown in FIGS. 2 (b) and 2 (c). A cylindrical roll member 14 is formed by winding in a spiral shape. Under the present circumstances, the flat fiber material 15a which forms the cylindrical roll material 14, and the flat fiber material 15 which forms the flat plate material 13 are good also as a different material. For example, the flat fiber material 15 may be a carbon fiber, and the flat fiber material 15a may be a glass fiber. As a result, a cylindrical roll member 14 is formed as shown in FIG.

  Next, as shown in FIGS. 3A and 3B, an opening is formed at an appropriate position of the flat plate 13 by manual work or the like, and the cylindrical roll member 14 is inserted into the opening. In other words, the cylindrical roll member 14 is arranged so as to be orthogonal to the flat plate member 13. Further, as shown in the cross-sectional view of FIG. 3B, at least one flat fiber material 15 is disposed on the upper surface and the lower surface of the cylindrical roll material 14. And the whole flat material 100 is filled with resin, and the whole is formed as FRP.

  Thereafter, as shown in FIGS. 4A and 4B, an opening 11 is formed in a portion where the cylindrical roll member 14 is inserted. At this time, the central axis of the cylindrical roll member 14 and the central axis of the opening 11 are set to substantially coincide. Next, as shown in FIGS. 1A and 1B, a metal collar 12 is inserted into the opening 11. Then, by inserting a fastener (not shown) such as a bolt into the collar 12, various components can be fastened to the flat plate material 100 made of FRP.

  The short fibers contained in the flat fiber material 15a face the planar direction of the flat fiber material 15a. As shown in FIG. 3B, the central axis of the cylindrical roll material 14 is arranged in a direction orthogonal to the flat plate material 13, so that it is included in the flat fiber material 15 of the flat plate material 13. The direction of the short fibers and the direction of the short fibers contained in the flat fiber material 15a of the cylindrical roll member 14 are substantially orthogonal to each other.

  Next, the effect of the component fastening structure according to the first embodiment will be described in comparison with a comparative example. FIG. 5 is a plan view showing a configuration of a flat plate material 200 according to a comparative example. The flat plate material 200 according to the comparative example is formed by forming a circular opening in a flat plate 201 made of FRP and inserting a metal collar 202 into the opening. That is, it differs from the first embodiment of the present invention in that the cylindrical roll material 14 is not provided.

  In the flat plate material 200 according to the comparative example shown in FIG. 5, when a lateral stress acts on the fastener inserted through the collar 202, a shearing force along the direction of the arrow Y <b> 1 in FIG. 5 acts. To do. At this time, since the flat fiber material constituting the flat plate material 200 is arranged in a direction in which the short fibers are parallel to the plane of the flat fiber material, the collar 202 is in point contact with the fiber material. Become. Therefore, when the shear stress is increased, a crack may be generated from the contact point, and the flat plate material 200 made of FRP may be damaged.

  On the other hand, in the flat plate material 100 used in the component fastening structure according to this embodiment shown in FIG. 1, the cylindrical roll material 14 is provided around the opening 11. Therefore, even when a lateral stress is applied to the fastener inserted through the collar 12, the collar 12 is supported by the fiber material included in the cylindrical roll material 14. That is, since the strength against the stress in the lateral direction is reinforced, the occurrence of cracks can be suppressed.

  Thus, in the component fastening structure according to the first embodiment, the cylindrical roll material 14 is arranged so that the central axis of the cylindrical roll material 14 is in a direction substantially orthogonal to the surface of the flat plate material 13, An opening 11 is formed in the cylindrical roll member 14, and a collar 12 is inserted through the opening 11. Accordingly, when a component such as a bolt is inserted into the collar 12 to fasten the component and a stress is generated in the component in a direction parallel to the flat plate material 100 (lateral direction), the strength against the stress is increased. It can strengthen, and it becomes possible to suppress that the flat plate material 100 cracks.

  Moreover, since the elongate flat fiber material 15a is wound in a spiral shape to form the cylindrical roll material 14, the cylindrical roll material 14 can be produced by a simple method.

  Further, as shown in FIG. 1B, since at least one flat fiber material 15 is provided on the front surface and the back surface of the cylindrical roll material 14, the strength in the vertical direction with respect to the cylindrical roll material 14. Can be improved.

[Description of Modified Example of First Embodiment]
FIG. 11 is an explanatory diagram illustrating a configuration of a flat fiber material 15c according to a first modification of the first embodiment. As shown to Fig.11 (a), in the 1st modification, the one front-end | tip part of the flat fiber material 15c which makes long shape becomes narrow gradually. That is, the diameter of the cylindrical roll material 14 changes toward the direction of the central axis. Accordingly, when the flat fiber material 15c is wound to form the cylindrical roll material 14, the diameter of the central portion is slightly wider with respect to the front surface side and the back surface side as shown in FIG. 11 (b). Therefore, when a stress is applied to the cylindrical roll material 14 in the vertical direction (direction perpendicular to the flat plate material 100), the strength against the stress can be increased.

  FIG. 12 is an explanatory diagram illustrating a configuration of a flat fiber material 15d according to a second modification of the first embodiment. As shown to Fig.12 (a), in the 2nd modification, one front-end | tip part of the flat fiber material 15d which makes long shape has branched into two. Accordingly, when the flat fiber material 15d is wound to form the cylindrical roll material 14, the diameter of the central portion is slightly narrower than the front surface side and the back surface side as shown in FIG. That is, the diameter of the cylindrical roll material 14 changes toward the direction of the central axis. Therefore, as in the first modification described above, when stress is applied to the cylindrical roll member 14 in the vertical direction (direction perpendicular to the flat plate material 100), the strength against this stress can be increased. Become.

[Description of Second Embodiment]
Next, a second embodiment of the present invention will be described. 6A and 6B are explanatory views showing the configuration of the component fastening structure according to the second embodiment, where FIG. 6A is a plan view and FIG. 6B is a cross-sectional view. As shown in FIGS. 6A and 6B, the component fastening structure according to the second embodiment includes a flat plate material 101 made of FRP, and an opening 11 is formed at an appropriate position of the flat plate material 101. The metal collar 12 is inserted into the portion 11 and configured. Then, various parts are fastened by inserting fasteners such as bolts (not shown) through the collar 12.

  In contrast to the flat plate material 100 shown in FIG. 1 described above, the flat plate material 101 according to the second embodiment is a flat fiber material 15 for covering the cylindrical roll material 14 on the front and back surfaces of the flat plate material 13. It is different in that is not provided. Since the other configuration is the same as that of the flat plate material 100 shown in FIG. 1, the same reference numerals are given and the description of the configuration is omitted.

  Next, a procedure for forming the flat plate material 101 shown in FIG. 6 will be described. First, as shown in FIG. 7, a long flat fiber material 15b is wound along the side surface of the cylindrical portion having a short diameter of the collar 12 having a two-stage cylindrical shape. As a result, a cylindrical roll member 14 is formed as shown in the perspective view of FIG. 8A and the plan view of FIG.

  Also, as shown in FIGS. 9 (a) and 9 (b), a flat plate material 13 in which a plurality of flat fiber materials 15 are laminated is prepared. As shown in FIGS. 10 (a) and 10 (b), the flat plate material 13 is prepared. The opening 11 is formed at an appropriate position of the plate-like plate material 13. At this time, since each flat fiber material 15 is in a state in which short fibers of glass fiber or carbon fiber are bonded with a binder or the like, the operator can easily form the opening 11 by hand.

  After that, the collar 12 around which the cylindrical roll material 14 is wound as shown in FIG. 8 is inserted into the opening 11 and further filled with resin, so that the FRP product shown in FIG. A flat plate material 101 is formed. Various components can be fastened to the flat plate material 101 by inserting a fastening member such as a bolt into the collar 12 provided in the flat plate material 101.

  In this way, in the component fastening structure according to the second embodiment, as shown in FIGS. 7 and 8, the long flat fiber material 15b is wound around the collar 12 in a spiral shape, and this is flat. It inserts in the board | plate material 13, is filled with resin in this state, and forms FRP. Accordingly, when various components are fixed by inserting fasteners such as bolts into the collar 12, stresses in the plane direction (lateral direction) of the flat plate 13 are applied to the components, and shear stress is applied to the flat plate material 101. Even when it acts, since this shear stress is suppressed by the cylindrical roll material 14, the strength against the shear stress can be improved, and the occurrence of cracks in the flat plate material 101 can be suppressed.

  Also in the second embodiment, as shown in FIG. 11 described above, the flat fiber material 15c whose one end portion is gradually narrowed is wound around the collar 12 so as to move in the vertical direction. It is possible to improve the strength against the facing stress. Furthermore, as shown in FIG. 12 described above, by winding the flat fiber material 15d with one end portion bifurcated around the collar 12, the strength against stress in the vertical direction can be improved.

  As mentioned above, although the component fastening structure of this invention was demonstrated based on embodiment of illustration, this invention is not limited to this, The structure of each part is replaced with the thing of the arbitrary structures which have the same function. Can do.

  For example, in the first and second embodiments described above, the example in which the central axis of the columnar roll material 14 is orthogonal to the flat plate material 13 has been described, but the present invention is not limited to this. The central axis of the cylindrical roll member 14 only needs to intersect the flat plate member 13.

  Further, in the first and second embodiments, as an example in which the flat fiber materials 15a and 15b are wound concentrically, the case where the flat fiber materials 15a and 15b are wound in a spiral shape as shown in FIG. It is also possible to adopt a configuration in which the fibrous material is wound concentrically.

DESCRIPTION OF SYMBOLS 11 Opening part 12 Color | collar 13 Flat plate material 14 Cylindrical roll material 15, 15a-15d Flat fiber material 100,101 Flat plate material

Claims (4)

In a component fastening structure for fastening a component to a flat plate material made of FRP,
The flat plate material is
A flat plate material formed by stacking a plurality of flat fiber materials; and
A cylindrical roll material arranged in the flat plate material such that the flat fiber material is wound concentrically and the central axis is in a direction intersecting the flat plate material,
An opening formed in the cylindrical roll material;
A collar inserted through the opening;
Have
A component fastening structure in which a fastener is inserted into the collar to fasten the component.   2. The component fastening structure according to claim 1, wherein the cylindrical roll material is formed by winding a long flat fiber material in a spiral shape. 3.   3. The component fastening structure according to claim 1, wherein a diameter of the cylindrical roll material changes toward a direction of the central axis.   4. The component fastening structure according to claim 1, wherein the flat plate material includes a flat fiber material so as to cover a front surface and a back surface of the cylindrical roll material. 5. .

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