JP4858125B2 - Fastening structure - Google Patents

Description

  The present invention relates to a fastening portion structure including a plate material made of a composite material of fibers and resin.

A fastening structure is known in which a metal nut is embedded in a window frame composed of a three-dimensional composite fabric, and a composite presser plate superimposed on the window frame is fixed by a bolt screwed into the nut. (For example, refer to Patent Document 1).
JP 2003-34296 A

  However, in the conventional technology as described above, there is a possibility that the fastening portion is loosened due to creep of the presser plate made of the composite material.

  In view of the above fact, an object of the present invention is to obtain a fastening portion structure that can prevent loosening due to creep of a composite material.

Fastening portion structure according to a first aspect of the present invention, Ri formed from composites of fiber and resin, and a plate member that constitutes a part of the closed cross, the first and second sandwiching the plate material in the thickness direction A metal member, fastening means for applying a fastening load to the first and second metal members, and interval setting means for setting the interval between the first and second metal members to a predetermined interval , The second metal is covered with the closed cross-sectional structure so that an outer surface thereof is in contact with the inner surface of the closed cross-sectional structure in a cross-sectional view, and the fastening means is formed on the second metal member and is therefore a screw. And a male screw member that is screwed into the female screw portion from the outside of the closed cross-sectional structure .

  In the fastening part structure according to claim 1, the first and second metal members are made of a composite material between each other while being kept at a predetermined interval by the interval setting means in a state where the fastening load is received by the fastening means. The board is sandwiched. Since the interval between the first and second metal members is kept at a predetermined interval, in other words, since the fastening load acting on the plate material can be suppressed, the creep of the plate material can be suppressed.

  Thus, in the fastening part structure according to the first aspect, loosening due to creep of the composite material can be prevented.

  The fastening part structure according to a second aspect of the present invention is the fastening part structure according to the first aspect, wherein at least one of the first and second metal members is bonded to the plate member.

  In the fastening part structure according to the second aspect, since at least one of the first and second metal members and the plate material are bonded, it is possible to prevent the passage of water or the like between them from being closed.

  A fastening part structure according to a third aspect of the invention is the fastening part structure according to the first or second aspect, wherein the fastening means includes the first metal member and the plate member with respect to the first metal member. The fastened member is fastened between the load receiving portion provided on the side opposite to the side.

  In the fastening part structure according to claim 3, the first metal member has a load receiving part (for example, a head of a screw or a bolt, a nut, etc.) in a state where the distance from the second metal member is held by the distance setting means. To be fastened). Since the fastening load acting on the composite plate is limited by the interval setting means, the member to be fastened can be fastened with the required fastening load.

Further, in this fastening portion structure, the second metal member is disposed in the closed cross section surrounded by the wall portion including the plate material, and the second metal member is formed on the second metal member and is screwed into the screw portion. The member to be fastened is fastened with a predetermined fastening load between the fastening portion of the screw member and the first metal member. Thereby, a to-be-fastened member can be fixed with respect to the 2nd metal member (namely, closed cross section) arrange | positioned inside a closed cross section. In addition, for example, it is possible to obtain a female thread portion by covering the periphery of the second metal member with a composite material constituting a closed cross section and then performing processing such as drilling or spiral cutting.

The fastening part structure according to a fourth aspect of the present invention is the fastening part structure according to the third aspect , wherein the distance setting means is a metal spacer portion positioned between the first and second metal members, The fastening means fastens the fastened member, the first metal member, and the spacer portion together between the load receiving portion and the second metal member.

In the fastening part structure according to claim 4 , the fastening means fastens the fastened member, the first metal member, and the spacer part between the load receiving part and the other metal member. Therefore, a fixed fastening load acts (balances) between them. And since the space | interval setting means has interposed the metal spacer part between a pair of metal members, it can restrict | limit the fastening load which acts on the board | plate material pinched | interposed between this pair of metal members reliably. .

According to a fifth aspect of the present invention, there is provided a fastening portion structure according to the fourth aspect , wherein the fastening means is formed on the second metal member, so that the screw portion and one end side are screwed to the female screw portion. And a male screw member provided with the load receiving portion on the other end side.

In the fastening part structure according to claim 5 , a female screw part is formed in the second metal member, and the male screw part screwed into the female screw part is, for example, a fixed head or screwed. A nut portion is provided as a load receiving portion. The fastening member, the first metal member, and the spacer portion are fastened together between the load receiving portion and the metal member on which the female screw portion is formed. Thereby, a to-be-fastened member can be fixed with a required fastening load with a simple structure, suppressing the fastening load which acts on a board | plate material.

The fastening part structure according to the invention of claim 6 is the fastening part structure of claim 4 or claim 4 , further comprising a stepped washer that penetrates the male screw member that constitutes the fastening means. The flange portion was used as the first metal member, and the portion of the stepped washer that protruded in the axial direction from the flange portion was used as the spacer portion.

In the fastening part structure according to the sixth aspect , since the first metal member and the spacer part are integrally formed as a stepped washer that allows the male screw member to pass therethrough, an increase in the number of parts is prevented. As the male screw member, for example, in addition to the male screw member according to claim 7, load receiving portions are provided at both ends in the axial direction and penetrate the second metal member, and stepped washers are provided on both sides of the second metal member. A bolt or the like for fastening the member to be fastened through (the first metal member and the spacer portion) can be employed.

According to a seventh aspect of the present invention, there is provided a fastening portion structure according to the third aspect , wherein the fastening means is formed on the second metal member, so that a screw portion, a first male screw portion, and a second screw portion are formed. A flange portion as the first metal member extends from between the male screw portion, and the flange portion and the second male screw in a state where the first male screw portion is screwed to the female screw portion. A male screw member that fastens the fastened member between a nut member that is screwed to the portion, and the interval setting means is configured to connect the first male screw portion to the female screw portion. The distance between the first and second metal members is set according to the screwing amount.

In the fastening portion structure according to claim 7 , the first metal member and the first screw member extended from the male screw member according to the screwing amount of the male screw member to the first female screw portion formed in the second metal member. The distance from the flange portion as the metal member is maintained at a predetermined distance. In this state, the fastened member is fastened between the flange portion and the nut member. Therefore, in this fastening part structure, it acts on the fastening load obtained by screwing the male screw member with the female screw part of the second metal part, that is, the plate material sandwiched between the second metal member and the flange part. The fastening load to be performed can be set independently with respect to the fastening load for fastening the fastened member between the flange portion and the nut member. Thereby, the fastening load which acts on a board | plate material can be suppressed, maintaining the required fastening load for fastening a fastening member.

According to an eighth aspect of the present invention, there is provided the fastening portion structure according to the seventh aspect , wherein the interval setting means is located between the flange portion and the second metal member, A metal spacer portion for limiting the screwing amount of the male screw portion to the female screw portion is included.

In the fastening part structure according to the eighth aspect , since the spacer is interposed between the flange part and the second metal member, further screwing of the first male thread part to the female thread part is restricted. Thereby, the fastening load which acts on a board | plate material can be suppressed reliably.

The fastening portion structure according to the invention of claim 9 is the fastening portion structure of claim 8 , wherein the spacer portion is integrated with the male screw member adjacent to the flange portion in the axial direction of the male screw member. Is formed.

In the fastening part structure according to the ninth aspect , since the spacer part is integrally formed adjacent to the flange part of the male screw member, an increase in the number of parts is prevented.

The fastening portion structure according to the invention of claim 10 is the fastening portion structure of claim 8 , wherein the spacer portion is configured as a separate body independent of any of the first and second metal members. ing.

In the fastening part structure according to claim 10 , since the spacer part is a separate body independent of the male thread part and the second metal member, the spacer part can be changed according to the thickness of the board material, so that the plate material having a different thickness can be obtained. It is possible to make the male screw member common.

Fastening portion structure according to the invention of claim 11, wherein, in the fastening portion structure of any one of claims 8 to claim 10, wherein the externally threaded member, the said flange portion in the axial direction a second external thread A tightening torque input portion by a tool is formed between the two portions.

In the fastening portion structure according to claim 11 , the tightening torque input portion can be set regardless of the size of the nut screwed into the second male screw portion, and the first male screw portion is connected to the second metal with a large tightening torque. It can be screwed into the female thread portion of the member.
The fastening part structure according to a twelfth aspect of the invention is the fastening part structure according to any one of the fourth to sixth and eighth to eleventh aspects, wherein the plate material includes the second metal. A countersink hole that exposes the end face of the member is formed, and the thickness of the spacer portion is larger than the depth of the countersink hole.

  As described above, the fastening portion structure according to the present invention has an excellent effect of being able to prevent loosening due to creep of the composite material.

A vehicle fastening part structure 10 to which a fastening part structure according to an embodiment of the present invention is applied will be described with reference to FIGS. 1 and 2. In the following description, for the sake of convenience, the side indicated by the arrow U is the upper side, and the side indicated by the arrow L is the lower side, but this limits the application direction of the vehicle fastening portion structure 10 to the vehicle body. There is no. In the following description, the first, third to fifth, and seventh embodiments are read as reference examples, respectively, and the second, sixth, eighth, and ninth embodiments are It shall be read as the first, second, third and fourth embodiments.

  FIG. 1 is a sectional view showing the overall configuration of the vehicle fastening portion structure 10. As shown in this figure, the vehicle fastening portion structure 10 is a structure for fastening a fastened member 14 to a vehicle body skeleton member 12 having a closed cross-sectional structure by fastening. This will be specifically described below.

  The vehicle body skeleton member 12 includes a lower panel 16 having a cross-sectional hat shape made of carbon fiber reinforced plastic (CFRP) as a composite material formed by solidifying carbon fibers with a resin, and a flat plate shape joined to a flange 16A of the lower panel 16. The upper panel 18 is configured as a main part. Although not shown, the vehicle body skeleton member 12 is elongated in the direction perpendicular to the cross section shown in FIG. In the vehicle fastening portion structure 10, a GFRP block 20 as a composite material block is disposed at a portion where the fastened member 14 is fastened in the longitudinal direction of the vehicle body skeleton member 12.

  The GFRP block 20 is formed by forming a glass fiber reinforced plastic into a block shape, and is covered with the vehicle body skeleton member 12 so that the periphery thereof is in contact with the inner surface of the vehicle body skeleton member 12. In the GFRP block 20, a metal collar 22 with a flange as a second metal member is embedded. The flanged metal collar 22 is configured such that a flange 26 is coaxially and integrally extended from one axial end portion of a collar body 24 having a substantially bottomed cylindrical shape. Further, a screw hole 25 is formed in the axial center portion of the collar body 24, and a female screw portion 25 </ b> A is formed on the inner surface of the screw hole 25.

  The flanged metal collar 22 is embedded in the GFRP block 20 up to the flange 26 by press fitting, and a portion including the screw hole 25 is exposed from the counterbore 27 formed in the upper panel 18. In this embodiment, the exposed portion of the flanged metal collar 22 from the counterbore hole 27 is formed so that the opening end surface of the screw hole 25 in the collar body 24 and the end surface of the flange 26 are substantially flush with each other to form the washer contact surface 22A. It is composed. That is, the counterbore hole 27 is exposed to a part of the flange 26. On the other hand, the portion of the flange 26 covered with the upper panel 18 is bonded to the upper panel 18. For this reason, an adhesive layer S is formed between the upper panel 18 and the flange 26 (the radially outer side of the washer contact surface 22A).

  Further, the vehicle fastening portion structure 10 includes a stepped washer 28 interposed between the fastened member 14 and the vehicle body skeleton member 12, that is, the flanged metal collar 22. The stepped washer 28 is configured such that a flange 32 is coaxially and integrally extended from one end side in the axial direction of a boss portion 30 formed in a short cylindrical shape. The outer diameter of the boss part 30 is slightly smaller than the inner diameter of the counterbore hole 27, and the inner diameter is slightly larger than the inner diameter (maximum diameter) of the screw hole 25. Further, the outer diameter of the flange 32 is sufficiently larger than the inner diameter of the counterbore hole 27.

  In the stepped washer 28, a portion of the boss portion 30 that protrudes in the axial direction from the flange 32 is a spacer portion 30A as a distance setting means. The spacer portion 30 </ b> A has the washer contact surface 22 </ b> A and the flange 32 in a state where the end surface 30 </ b> B opposite to the extending side of the flange 32 in the boss portion 30 is abutted against the washer contact surface 22 </ b> A of the flanged metal collar 22. The interval is maintained at a constant interval. In this embodiment, the flange 32 of the stepped washer 28 (and the portion excluding the spacer portion 30A in the boss portion 30) corresponds to the first metal member in the present invention.

  The stepped washer 28 sandwiches the upper panel 18 as a plate material between the flange 32 and the flange 26 of the flanged metal collar 22. The upper panel 18 and the flange 32 are bonded. That is, the adhesive layer S is formed between the upper panel 18 and the flange 32. In this embodiment, the adhesive layer S is also formed between the edge portion of the counterbore 27 in the upper panel 18 and the spacer portion 30A. In the vehicle fastening portion structure 10, the adhesion layer S prevents water from entering the vehicle body skeleton member 12.

  Further, the vehicle fastening portion structure 10 includes a bolt 34 as a male screw member. The bolt 34 is screwed into a female thread portion 25A of the flanged metal collar 22 with a male thread portion 34A penetrating the fastened member 14 and the stepped washer 28, thereby being stepped with the head portion 34B as its load receiving portion. The fastened member 14 is fastened with the attached washer 28. That is, in the vehicle fastening portion structure 10, the fastened member 14 is fastened to the vehicle body skeleton member 12 by the flanged metal collar 22 (female screw portion 25A) and the bolt 34 as fastening means.

  The vehicle fastening portion structure 10 described above includes, for example, a vehicle body such as a dash cross member that fastens a vehicle body part such as a suspension member to a vehicle body skeleton member 12 as a front side member or a rear side member, or is embedded in a dash panel or the like. It is used for applications such as fastening a connecting member interposed between the skeleton member 12 and the front side member. In this embodiment, the fastened member 14 is supported by the plurality of vehicle fastening part structures 10 provided on the vehicle body skeleton member 12 or is shared by the vehicle fastening part structures 10 provided respectively on the plurality of vehicle body skeleton members 12. The to-be-fastened member 14 is supported, and the vehicle body skeleton member 12 and the to-be-fastened member 14 do not rotate relative to each other around the bolt 34 (angular displacement).

  Next, the fastening (assembly) procedure of the vehicle fastening portion structure 10 will be described with reference to FIG. In assembling the vehicle fastening portion structure 10 having the above-described configuration, first, as shown in FIG. 2A, the GFRP block 20 is subjected to hole processing and countersink processing, and the press fitting into which the collar body 24 enters the GFRP block 20 is performed. A hole 36 is formed, and a counterbore hole 38 into which the flange 26 enters is formed. Next, as shown in FIG. 2B, the flanged metal collar 22 is press-fitted into the GFRP block 20 in which the press-fitting hole 36 and the counterbore hole 38 are formed. That is, the collar body 24 is press-fitted into the press-fitting hole 36 and the flange 26 is fitted into the counterbore hole 38.

  Next, as shown in FIG. 2C, the vehicle body skeleton member 12 is molded so as to wrap the collar body 24 into which the flanged metal collar 22 is press-fitted. Specifically, the GFRP block 20 is placed on a mold in which the lower panel 16 is molded, and the upper surface 20A of the GFRP block 20, the opening surface of the screw hole 25 in the collar body 24, and the upper surface of the flange 26 (washer contact surface). 22A) is coated with an adhesive, and the upper panel 18 is molded so as to close the open end of the lower panel 16. The vehicle body skeleton member 12 is fired from this state.

  Next, as shown in FIG. 2 (D), hole processing is performed from the outside of the upper panel 18 to form a screw hole 25 in the metal collar 22 with flange, and further, a female thread portion 25A is formed in the screw hole 25 by threading. . Thereafter, a countersink hole 27 is formed by countersink processing as shown in FIG. By this countersinking process, the adhesive layer S is removed so that the washer contact surface 22A is exposed. In this case, a part of the flanged metal collar 22 may be turned over.

  Next, an adhesive is applied to the lower surface of the flange 32 of the stepped washer 28 and the outer peripheral surface of the spacer portion 30 </ b> A, so that the spacer portion 30 </ b> A is inserted into the counterbore 27 as shown in FIG. The attached washer 28 is placed on the vehicle body skeleton member 12. In this state, the stepped washer 28 is temporarily held on the vehicle body skeleton member 12 by bonding the flange 32 and the upper panel 18.

  Then, the fastened member 14 is placed on the stepped washer 28, and the male thread portion 34A of the bolt 34 is screwed into the female thread portion 25A of the metal collar 22 with flange. By screwing the bolt 34 to the flanged metal collar 22, the upper panel 18 positioned between the flange 32 of the stepped washer 28 and the flange 26 of the flanged metal collar 22 receives a fastening (compression) load and is stepped. The end face 30B of the washer 28 is seated on the washer contact face 22A of the flanged metal collar 22. From this state, the bolt 34 is further rotated in the screwing direction to increase the screwing amount of the bolt 34 to the flanged metal collar 22. Thereby, as shown in FIG. 1, the vehicle fastening portion structure 10 in which the fastened member 14 is fastened and fixed to the vehicle body skeleton member 12 is obtained.

  Next, the operation of this embodiment will be described.

  In the vehicle fastening portion structure 10 configured as described above, the fastened member 14 is fixed to the vehicle body skeleton member 12 by fastening. Specifically, the fastened member 14 is fixed to the vehicle body skeleton member 12 by a fastening load that acts between the stepped washer 28 and the head 34B.

  Here, in the vehicle fastening portion structure 10, since the distance between the flange 32 of the stepped washer 28 sandwiching the upper panel 18 and the flange 26 of the flanged metal collar 22 is kept constant, the fastening load acting on the upper panel 18. Is suppressed. Therefore, in the vehicle fastening portion structure 10, for example, creep is prevented from occurring in the upper panel 18 in a high temperature environment, and even if creep occurs in the upper panel 18, the fastening load of the fastened member 14 is prevented from decreasing. Is done.

  Describing while comparing with the vehicle fastening portion structure 200 according to the comparative example shown in FIG. 15, in the vehicle fastening portion structure 200, the fastened member 14 is fastened and held between the head 34 </ b> B and the upper panel 18. Therefore, the entire fastening load acts on the upper panel 18 and the upper panel 18 is likely to creep in a high temperature environment. The creep of the upper panel 18 in the vehicle fastening portion structure 200 causes a reduction in fastening load, that is, loosening of the bolt 34.

  In contrast, in the vehicle fastening portion structure 10, since the fastening load acting on the upper panel 18 is suppressed as described above, it is difficult for the upper panel 18 to creep. Further, since the fastening load of the fastened member 14 between the head 34B of the bolt 34 and the stepped washer 28 can be set regardless of the fastening load of the upper panel 18, the upper panel 18 is temporarily creeped. However, it is possible to prevent the bolt 34 from being loosened, that is, the fastening load of the fastened member 14 from being lowered.

  Further, in the vehicle fastening portion structure 10, the adhesive layer S seals between the flange 26 of the flanged metal collar 22 and the upper panel 18 and between the flange 32 of the stepped washer 28 and the upper panel 18. Intrusion of water into the vehicle body skeleton member 12 is prevented. Thereby, in the fastening part structure 10 for vehicles, the electrolytic corrosion of the metal collar 22 with a flange and the volt | bolt 34 is prevented.

  Further, in the vehicle fastening portion structure 10, the end surface 30 </ b> B of the spacer portion 30 </ b> A in the stepped washer 28 is brought into contact with the washer contact surface 22 </ b> A of the flanged metal collar 22, in other words, with the stepped washer 28. Since the distance between the flange 32 and the flange 26 is kept constant by the metal touch with the flanged metal collar 22, the fastening load acting on the upper panel 18 can be surely limited. In particular, since the spacer portion 30A is formed integrally with the flange 32, the fastening load acting on the upper panel 18 can be reliably limited with a simple structure while suppressing an increase in the number of parts.

  Furthermore, in the vehicle fastening part structure 10, since the female screw hole 25 is provided in the flanged metal collar 22 disposed in the vehicle body skeleton member 12, for example, compared with a configuration in which a bolt is erected from the flanged metal collar 22. Thus, the assemblability and fastening performance are good. For example, when the bolt is erected from the flanged metal collar 22, an upper panel 18 that is molded in advance and formed with a countersink hole 27 is prepared, or the flange portion is on the lower side (the bottom wall 16B side of the lower panel 16). It is necessary to press-fit the flanged metal collar 22 from below through the bottom wall 16B so as to be positioned. In the former case, the assembly process increases, and in the latter case, the GFRP block 20 is positioned together with the upper panel 18 between the flange 26 and the flange 32. In this latter configuration, since the resin layer having a different linear expansion coefficient is disposed between the flange 26 and the flange 32 with a thick wall, the operating temperature range is limited. Since only the thin upper panel 18 is sandwiched between the flange 26 and the flange 32, it can be used in a wide temperature range required for automobiles.

  Furthermore, in the vehicle fastening portion structure 10, the flanged metal collar 22 is held in the vehicle body skeleton member 12 by the GFRP block 20, so that the flanged metal collar 22 is firmly fixed to the vehicle body skeleton member 12. In addition, the weight can be reduced as compared with the case where the portion including the portion corresponding to the GFRP block 20 is made of metal.

  Next, another embodiment of the present invention will be described. Note that parts or portions that are basically the same as those in the first embodiment or the above-described configuration are denoted by the same reference numerals as those in the first embodiment or the previous configuration, and the description thereof is omitted. May be omitted.

(Second Embodiment)
FIG. 3 is a sectional view showing a vehicle fastening portion structure 40 according to a second embodiment of the present invention. As shown in this figure, the vehicle fastening portion structure 40 according to the first embodiment is provided with an aluminum block 42 as a second metal member in place of the GFRP block 20 and the flanged metal collar 22. This is different from the vehicle fastening portion structure 10.

  The aluminum block 42 is made of aluminum or aluminum alloy and has substantially the same outer shape as that of the GFRP block 20 (before the press-fitting hole 36 and countersink hole 38 are formed), and the screw hole 25 is formed at the center. It is configured. A portion of the upper surface of the aluminum block 42 covered with the upper panel 18 is adhered to the upper panel 18 by an adhesive layer S, and a washer contact surface 42A exposed from the counterbore 27 is an end surface of the stepped washer 28. It comes in contact with 30B.

  Similar to the GFRP block 20 in which the flanged metal collar 22 is press-fitted, the aluminum block 42 is placed on a mold in which the lower panel 16 is molded, and the upper panel 18 is molded, whereby the aluminum frame 42 is placed in the vehicle body skeleton member 12. Fixedly sealed. Other configurations of the vehicle fastening portion structure 40 are the same as the corresponding configurations of the vehicle fastening portion structure 10.

  Therefore, the vehicle according to the first embodiment also has the effect of providing the GFRP block 20 made of a material different from that of the flanged metal collar 22 also by the vehicle fastening portion structure 40 according to the second embodiment. The same effect can be obtained by the same operation as the fastening part structure 10 for use. Moreover, each process corresponding to the press-fitting process for press-fitting the metal collar 22 with the flange into the GFRP block 20 and the processing step for forming the press-fitting hole 36 and the countersink hole 38 in the GFRP block 20 can be eliminated.

(Third embodiment)
FIG. 4 is a sectional view showing a vehicle fastening portion structure 50 according to a third embodiment of the present invention. As shown in this figure, the vehicle fastening portion structure 50 is different from the vehicle fastening portion structure 10 according to the first embodiment in that the fastened members 14 are fastened to both the upper and lower sides of the vehicle body skeleton member 12. Different. The upper and lower fastened members 14 are fastened to the vehicle body skeleton member 12 by a substantially symmetrical structure. This will be specifically described below.

  The vehicle fastening portion structure 50 includes a flanged metal collar 52 as a second metal member in which flanges 26 are formed at both ends in the longitudinal direction of a cylindrical collar body 54 instead of the flanged metal collar 22. I have. That is, the flanged metal collar 52 is formed vertically symmetrically, and a countersink hole 55 corresponding to the countersink hole 27 is formed in the bottom wall 16B of the lower panel 16. In addition, it is set as the through-hole in which the axial center part internal thread part of the collar main body 54 is not formed. For example, the flanged metal collar 52 can be embedded in the GFRP block 20 by insert molding, or can be press-fitted into the GFRP block 20 from both upper and lower sides by forming a two-part structure in the middle part of the collar body 54.

  In the vehicle fastening portion structure 50, the upper and lower fastened members 14 are fastened together by bolts 56 and nuts 58 that constitute fastening means. Specifically, the bolt 56 as a male screw member passes through the upper fastening member 14, the stepped washer 28, the flanged metal collar 52, the lower stepped washer 28, and the fastening member 14. The upper and lower fastened members 14 are fastened together with the vehicle body skeleton member 12 by screwing a nut 58 into the male screw portion 56A protruding from the lower fastened member 14. That is, the upper fastened member 14 is fastened between the stepped washer 28 and the head 56B as the load receiving portion of the bolt 56, and the lower portion 14 is the nut as the stepped washer 28 and the load receiving portion. It can be grasped that it is fastened with 58. Other configurations of the vehicle fastening portion structure 50 are the same as the corresponding configurations of the vehicle fastening portion structure 10.

  Accordingly, the vehicle fastening portion structure 50 according to the third embodiment also eliminates the operational effects of providing the screw hole 25 in the flanged metal collar 22 (the flanged metal collar 22 constitutes a fastening means). The same effect can be obtained by the same operation as that of the vehicle fastening portion structure 10 according to the first embodiment. In the vehicle fastening portion structure 50, the effects of preventing the upper panel 18 from creeping and preventing the fastening load of the fastened member 14 from being lowered when the upper panel 18 creeps are reduced with respect to the bottom wall 16 </ b> B of the lower panel 16. Can also be obtained. Further, in the vehicle fastening portion structure 50, the fastened member 14 is fastened on the upper and lower sides of the vehicle body skeleton member 12, so that the flanged metal collar 52 does not have the screw hole 25, but the fastening performance and assemblability are improved. It is good.

  In addition, although the example provided with the metal collar 52 with a flange of both flange shapes was shown in 3rd Embodiment, this invention is not limited to this, For example, it comprised with the single flange 26. A color main body 54 may be used. Further, instead of the configuration having the flanged metal collar 52, an aluminum block 42 having a through hole in the shaft center portion may be used.

(Fourth embodiment)
FIG. 5 is a sectional view showing a vehicle fastening portion structure 60 according to a fourth embodiment of the present invention. As shown in this figure, the vehicle fastening portion structure 60 is a second metal member in which a bolt 62 as a male screw portion is erected from the shaft center portion instead of the flanged metal collar 22 having the screw holes 25. It differs from the fastening part structure 10 for vehicles which concerns on 1st Embodiment by the point provided with the metal collar 64 with a flange as.

  The flanged metal collar 64 has the same outer shape as the flanged metal collar 22 and is embedded in the GFRP block 20. A bolt 62 is erected from the axial center portion of the washer contact surface 64A corresponding to the washer contact surface 22A. The bolt 62 may be formed integrally with the flanged metal collar 64 or may be fixed to the flanged metal collar 64 by welding or the like. In the latter case, the bolt 62 can be welded after the counterbore 27 is formed. In the vehicle fastening portion structure 60, the nut 66 is screwed onto the bolt 62 passing through the stepped washer 28 and the fastened member 14, so that the fastened member 14 is stepped with the nut 66 as the load receiving portion. It is set as the structure fastened between the washers 28. Other configurations of the vehicle fastening portion structure 60 are the same as the corresponding configurations of the vehicle fastening portion structure 10.

  Accordingly, the vehicle fastening portion structure 60 according to the fourth embodiment also has the effect of forming the screw holes 25 in the flanged metal collar 22, except for the vehicle fastening portion structure 60 according to the first embodiment. A similar effect can be obtained by the same operation as that of the structure 10.

  In the fourth embodiment, the example in which the bolt 62 is erected from the flanged metal collar 64 is shown. However, the present invention is not limited to this, and for example, the aluminum block 42 in which the screw hole 25 is not formed. Alternatively, the bolt 62 may be erected.

(Fifth embodiment)
FIG. 6 is a sectional view showing a vehicle fastening portion structure 70 according to a fifth embodiment of the present invention. As shown in this figure, the vehicle fastening part structure 70 uses a stud bolt 72 with a flange instead of the structure using the stepped washer 28 as the first metal member and the interval setting means (spacer part). This is different from the vehicle fastening portion structure 10 according to the first embodiment.

  The stud bolt 72 is a radial direction from between a bolt main body 74 in which male screw portions 74A and 74B are formed on both ends in the axial direction, and between the first male screw portion 74A and the second male screw portion 74B in the bolt main body 74. The main part is composed of a flange portion 76 extending to the main portion. The stud bolt 72 is held by the vehicle body skeleton member 12 by screwing the first male screw portion 74A with the female screw portion 25A of the metal collar 22 with flange. In this embodiment, an adhesive layer S is formed between the flange portion 76 and the upper panel 18. In the vehicle fastening portion structure 70, it is sufficient that the adhesive layer S is formed between the flanged metal collar 22 (flange 26) and the upper panel 18, and the adhesive layer S is interposed between the flange portion 76 and the upper panel 18. It is also possible to adopt a configuration in which no is provided.

  Further, in the vehicle fastening portion structure 70, as described above, the stud bolt 72 held by the vehicle body skeleton member 12 has the second male screw portion 74B passing through the fastened member 14, and the second male screw portion 74B. By screwing a nut 78 as a load receiving portion into the nut, the fastened member 14 is fastened between the nut 78 and the flange portion 76. Other configurations of the vehicle fastening portion structure 70 are the same as the corresponding configurations of the vehicle fastening portion structure 10.

  When assembling the vehicle fastening portion structure 70 having the above configuration, the processing up to the screw hole 25 and the female screw portion 25A shown in FIG. Thereafter, in the vehicle fastening portion structure 70, the male screw portion 74 </ b> A of the stud bolt 72 is screwed into the female screw portion 25 </ b> A of the flanged metal collar 22 until the flange portion 76 of the stud bolt 72 is seated on the upper panel 18. Next, the fastened member 14 is placed on the flange portion 76 of the stud bolt 72 so that the male screw portion 74A penetrates the fastened member 14, and a nut 78 is screwed onto the male screw portion 74A by a predetermined amount or with a predetermined torque. Combine. As a result, the fastened member 14 is fastened between the flange portion 76 and the nut 78 with a predetermined fastening load.

  As described above, in the vehicle fastening portion structure 70, the distance between the flange portion 76 and the flange 26 is kept constant in a non-contact manner by the screwing amount of the external thread portion 74 </ b> A with respect to the internal thread portion 25 </ b> A constituting the interval setting means. Thus, the fastening load acting on the upper panel 18 is suppressed. In other words, the fastening load acting on the upper panel 18 can be set independently of the fastening load of the fastened member 14 determined by the screwing amount of the nut 78 to the second female screw portion 74B. The mechanism for suppressing the fastening load acting on the upper panel 18 is the vehicle fastening part structure 10 that keeps the distance between the flange 32 and the flange 26 constant by the thickness of the spacer part 30A that makes a metal touch to the flanged metal collar 22 at the end face 30B. It is different from the mechanism in

  Therefore, the vehicle fastening portion structure 70 has the same operation as that of the vehicle fastening portion structure 10 according to the first embodiment except for the difference in operation caused by different mechanisms for suppressing the fastening load acting on the upper panel 18. A similar effect can be obtained. Further, in the configuration in which the adhesive layer S is formed between the flange portion 76 and the upper panel 18, the mounting rigidity of the stud bolt 72 to the vehicle body skeleton member 12 is improved. As described in the first embodiment, since the vehicle body skeleton member 12 and the fastened member 14 do not rotate relative to each other around the stud bolt 72, the male screw portion 74A and the female screw portion 25A having a relatively small fastening load. The screwing does not loosen.

(Sixth embodiment)
FIG. 7 is a sectional view showing a vehicle fastening portion structure 80 according to a sixth embodiment of the present invention. As shown in this figure, the vehicle fastening portion structure 80 according to the fifth embodiment is provided with an aluminum block 42 as a second metal member in place of the GFRP block 20 and the flanged metal collar 22. This is different from the vehicle fastening portion structure 70. Other configurations of the vehicle fastening portion structure 70 are the same as the corresponding configurations of the vehicle fastening portion structure 70.

  Therefore, the vehicle according to the fifth embodiment also has the effect of providing the GFRP block 20 made of a material different from that of the flanged metal collar 22 even by the vehicle fastening portion structure 80 according to the sixth embodiment. The same effect can be obtained by the same operation as the fastening part structure 70 for use. Moreover, each process corresponding to the press-fitting process for press-fitting the metal collar 22 with the flange into the GFRP block 20 and the processing step for forming the press-fitting hole 36 and the countersink hole 38 in the GFRP block 20 can be eliminated.

(Seventh embodiment)
FIG. 8 is a sectional view showing a vehicle fastening portion structure 90 according to a seventh embodiment of the present invention. As shown in this figure, the vehicle fastening portion structure 90 includes a flanged metal collar 64 and a first metal member 64 as a second metal member in which a bolt 62 is erected in place of the flanged metal collar 22 and the stud bolt 72. This is different from the vehicle fastening portion structure 70 according to the fifth embodiment in that a nut 92 with a flange as a metal member is provided.

  The flanged nut 92 is configured such that a flange 96 is extended from one axial end side of a nut main body 94 that is screwed to the bolt 62. The flanged nut 92 is screwed into the bolt 62 until the flange 96 is seated on the upper panel 18, and the fastened member 14 is fastened between the flange 96 and the nut 66 at this position. In this embodiment, an adhesive layer S is formed between the flange 96 and the upper panel 18. Other configurations of the vehicle fastening portion structure 90 are the same as the corresponding configurations of the vehicle fastening portion structure 70.

  Therefore, the vehicle fastening portion structure 90 according to the seventh embodiment also has the effect of the screw hole 25 being formed in the flanged metal collar 22, except for the vehicle fastening portion according to the fifth embodiment. A similar effect can be obtained by the same operation as that of the structure 70. In the seventh embodiment, the example in which the bolt 62 is erected from the flanged metal collar 64 is shown. However, the present invention is not limited to this, and for example, the aluminum block 42 in which the screw hole 25 is not formed. Alternatively, the bolt 62 may be erected.

(Eighth embodiment)
FIG. 9 is a sectional view showing a vehicle fastening portion structure 100 according to an eighth embodiment of the present invention. As shown in this figure, the vehicle fastening portion structure 100 includes a stud bolt 104 in which a stepped flange 102 is extended from between a male screw portion 74A and a male screw portion 74B in place of the stud bolt 72. This is different from the vehicle fastening portion structure 70 according to the fifth embodiment.

  As shown in FIG. 10, the stepped flange 102 is configured such that a spacer portion 106 protrudes from the male screw portion 74 </ b> A side with respect to the flange portion 76. The outer diameter of the spacer portion 106 is sufficiently smaller than the outer diameter of the flange portion 76. Further, in this embodiment, the external thread portion 74A is formed on the aluminum block 42, so that it is screwed into the thread portion 25A. A counterbore hole 27 having a diameter larger than the outer diameter of the spacer portion 106 is formed in the upper panel 18.

  In this embodiment, the counterbore 27 extends to a part of the aluminum block 42. That is, as shown in FIG. 11B, the depth H1 of the counterbore 27 is based on the sum H2 of the thicknesses of the upper panel 18 and the adhesive layer S (the adhesive layer S between the upper panel 18 and the aluminum block 42). Is also large (H1> H2). On the other hand, the protrusion height H3 (see FIG. 10) of the spacer portion 106 from the flange portion 76 is slightly larger than the depth H1 of the counterbore 27 (H3> H1). An adhesive can be filled between the flange portion 76 and the upper panel 18 in a state of being seated on the spacer contact surface 42B serving as the bottom surface (adhesive layer S can be formed).

  In the vehicle fastening portion structure 100, the fastened member 14 is fastened between the flange portion 76 and the nut 78 with the spacer portion 106 seated (metal touch) on the spacer contact surface 42 </ b> B of the aluminum block 42. ing. Further, a tool engaging portion 108 having, for example, a hexagonal cross section is formed at the end of the bolt body 74 opposite to the external thread portion 74A. Other configurations of the vehicle fastening portion structure 100 are the same as the corresponding configurations of the vehicle fastening portion structure 70. In this embodiment, the vehicle fastening portion structure 100 fastens the fastened member 14 that is long in the fastening direction.

  Supplementing the assembly of the vehicle fastening portion structure 100 having the above-described configuration, the aluminum block 42 is enclosed and fixed in the vehicle body skeleton member 12 as shown in FIG. This step is basically the same as the step of enclosing and fixing the GFRP block 20 (with the flanged metal collar 22) shown in FIG. The block 42 is bonded with an adhesive layer S. Next, as shown in FIG. 11B, a screw hole 25 and a female screw portion 25A are formed, and a counterbore hole 27 is formed. At this time, the part of the upper surface of the aluminum block 42 is strung. Thereby, the spacer contact surface 42B which is a metal surface is exposed reliably. Next, the male screw portion 74A is screwed into the female screw portion 25A until the spacer portion 106 is seated (metal touch) on the spacer contact surface 42B, and the gap between the flange portion 76 and the upper panel 18 is filled with an adhesive. Then, the fastened member 14 is fastened between the flange portion 76 and the nut 78.

  As described above, the vehicle fastening portion structure 100 according to the eighth embodiment is the vehicle fastening portion only in that the screwing amount of the external thread portion 74A to the female thread portion 25A is limited by the thickness of the spacer portion 106. Since it is different from the structure 70, the same effect can be obtained by the same operation as that of the basic 70 according to the fifth embodiment. Further, in the vehicle fastening portion structure 100, since the spacer portion 106 is in metal touch with the spacer contact surface 42B, the fastening load acting on the upper panel 18 can be reliably suppressed. Further, in the vehicle fastening portion structure 100, the mounting rigidity of the stepped flange 102 is improved by the adhesive layer S between the flange portion 76 and the upper panel 18. In this respect, the vehicle fastening portion structure 70 is the same, but in the vehicle fastening portion structure 100 in which the fastened member 14 that is long in the fastening direction is fixed by fastening, the contribution of the attachment rigidity of the stepped flange 102 is improved. large.

(Modification of the eighth embodiment)
FIG. 12 shows a stud bolt 110 according to a first modification that constitutes the vehicle fastening portion structure 100. As shown in this figure, in the stud bolt 110, the spacer portion 106 is not integrally formed, and a washer 112 as a separate spacer portion is provided between the flange portion 76 and the washer contact surface 42A of the aluminum block 42. It differs from the stud bolt 104 in that it is interposed. In the vehicle fastening part structure 100 using the stud bolt 110 and the washer 112, in addition to the above-described effects, the washer 112 (thickness) is changed with respect to the vehicle fastening part structure 100 in which the depth of the counterbore 27 is different. Thus, the common stud bolt 110 can be used.

  FIG. 13 shows a stud bolt 114 according to a second modification that constitutes the vehicle fastening portion structure 100. As shown in this figure, the stud bolt 114 is different from the stud bolt 104 in that it has a tool engaging portion 116 as a tightening torque input portion instead of the tool engaging portion 108. The tool engaging portion 116 is formed adjacent to the external thread portion 74B side with respect to the flange portion 76. In the vehicle fastening portion structure 100 using the stud bolt 114, in addition to the above effects, the tightening torque of the external thread portion 74A with respect to the internal thread portion 25A can be increased. Specifically, the tool engaging portion 108 of the stud bolt 104 has dimensional restrictions for allowing the nut 78 to pass therethrough. However, the tool engaging portion 116 has a required tightening torque regardless of the nut 78. Dimensions can be adopted. By increasing the tightening torque, the mounting rigidity of the stud bolt 114 can be further improved. This configuration is particularly suitable when the fastened member 14 has a large load input.

(Ninth embodiment)
FIG. 14 is a sectional view showing a vehicle fastening portion structure 120 according to a ninth embodiment of the present invention. As shown in this figure, the vehicle fastening portion structure 120 differs from the vehicle fastening portion structure 80 according to the sixth embodiment in that a stud bolt 122 having a stepped flange is provided instead of the stud bolt 72. Different. Specifically, in the stud bolt 122, a disk-like (short columnar) stepped portion 124 protruding from the flange portion 76 toward the first male screw portion 74A constitutes a stepped flange with the flange portion 76. is doing. On the other hand, the body frame member 12 is formed with a counterbore hole 27 that penetrates the upper panel 18 and reaches the aluminum block 42. In this embodiment, the inner diameter of the counterbore 27 substantially matches the outer diameter of the stepped portion 124.

  In the vehicle fastening portion structure 120, the male thread portion 74A of the stud bolt 72 is screwed into the female thread portion 25A of the flanged metal collar 22 until the flange portion 76 of the stud bolt 72 is seated on the upper panel 18, and the flange With the distance between the portion 76 and the flange 26 kept constant, the outer peripheral surface 124A of the stepped portion 124 is a peripheral wall surface of the block countersink hole 42C that is a portion formed in the aluminum block 42 in the countersink hole 27. It is set as the structure which contacts 42D. In other words, the stepped portion 124 of the stud bolt 122 is configured to fit into the block counterbore hole 42 </ b> C of the aluminum block 42. In this state, a gap is formed between the end surface of the stepped portion 124 and the bottom surface of the block countersink hole 42C (spot countersink hole 27). Other configurations of the vehicle fastening portion structure 120 are the same as the corresponding configurations of the vehicle fastening portion structure 80.

  Therefore, also by the vehicle fastening part structure 120 according to the ninth embodiment, the same effect can be obtained by the same action as the vehicle fastening part structure 80 according to the sixth embodiment. Further, in the vehicle fastening portion structure 120, the outer peripheral surface 124A of the stepped portion 124 and the peripheral wall surface 42D of the block countersink hole 42C in the aluminum block 42 are in contact with each other. Is received by the peripheral wall surface 42D of the block counterbore hole 42C in the aluminum block 42. Therefore, in the vehicle fastening portion structure 120, the vehicle body skeleton member 12 and the fastened member 14 can be more firmly coupled to the load in the direction perpendicular to the axis of the stud bolt 122 input from the fastened member 14. (Mounting rigidity is improved).

  In each of the above-described embodiments, the example in which the fastening portion structure of the present invention is applied to the application of fixing a part to the skeleton member 12 of the automobile has been shown. Needless to say, this is possible.

It is sectional drawing which shows the fastening part structure for vehicles which concerns on the 1st Embodiment of this invention. It is a figure which shows the assembly process of the fastening part structure for vehicles which concerns on the 1st Embodiment of this invention, Comprising: (A) is sectional drawing of the processing state of a GFRP block, (B) is a metal collar with a flange with respect to a GFRP block. FIG. 4C is a cross-sectional view of the press-fitted state, and FIG. (D) is a sectional view in a state where a metal collar with a hole is drilled and threaded, (E) is a sectional view in which a washer contact surface of the flanged metal collar is exposed by countersink, and (F) is in a state where (F) is FIG. 5 is a cross-sectional view of a temporarily holding state of a stepped washer with respect to a vehicle body skeleton member. It is sectional drawing which shows the fastening part structure for vehicles which concerns on the 2nd Embodiment of this invention. It is sectional drawing which shows the fastening part structure for vehicles which concerns on the 3rd Embodiment of this invention. It is sectional drawing which shows the fastening part structure for vehicles which concerns on the 4th Embodiment of this invention. It is sectional drawing which shows the fastening part structure for vehicles which concerns on the 5th Embodiment of this invention. It is sectional drawing which shows the fastening part structure for vehicles which concerns on the 6th Embodiment of this invention. It is sectional drawing which shows the fastening part structure for vehicles which concerns on the 7th Embodiment of this invention. It is sectional drawing which shows the fastening part structure for vehicles which concerns on the 8th Embodiment of this invention. It is a side view of the stud bolt which constitutes the conclusion part structure for vehicles concerning an 8th embodiment of the present invention. FIG. 9A is a view showing an assembly process of a vehicle fastening portion structure according to an eighth embodiment of the present invention, where FIG. 9A is a sectional view of a state in which a GFRP block is enclosed in a vehicle body skeleton member 12, and FIG. It is a side view which shows the 1st modification of the stud bolt which comprises the fastening part structure for vehicles which concerns on the 8th Embodiment of this invention. It is a side view which shows the 2nd modification of the stud bolt which comprises the fastening part structure for vehicles which concerns on the 8th Embodiment of this invention. It is sectional drawing which shows the fastening part structure for vehicles which concerns on the 9th Embodiment of this invention. It is sectional drawing of the fastening part structure for vehicles which concerns on the comparative example with embodiment of this invention.

Explanation of symbols

10 Vehicle fastening part structure (fastening part structure)
12 Car body frame member (closed section structure)
14 Fastened member 16B Bottom (plate material)
18 Upper panel (plate material)
20 GFRP block (composite material block)
22 Metal collar with flange (second metal member)
25A female thread (fastening means)
28 Stepped washer (first metal member, spacer)
30A Spacer 32 Flange (Flange)
34 Bolt (Male thread member, fastening means)
34B head (load receiving part, fastening means)
40/50/60/70/80/90/100/120 Fastening part structure for vehicles (fastening part structure)
42 Aluminum block (second metal member)
52 Metal collar with flange (second metal member)
56/62 Bolt (Male thread member, fastening means)
56B head (load receiving part, fastening means)
58, 66, 78 Nut (load receiving part, fastening means)
72 ・ 104 ・ 110 ・ 114 ・ 122 Stud bolt (Male thread member, fastening means)
74A First male thread part 74B Second male thread part 76 Flange part 92 Nut with flange (first metal member)
106 Spacer 112 Washer (Spacer)
116 Tool engaging part (tightening torque input part)

Claims (12)

Ri formed from composites of fiber and resin, and a plate member that constitutes a part of a closed section structure,
First and second metal members sandwiching the plate material in the plate thickness direction;
Fastening means for applying a fastening load to the first and second metal members;
An interval setting means for setting the interval between the first and second metal members to a predetermined interval;
Equipped with a,
The second metal is covered with the closed cross-sectional structure so that the outer surface is in contact with the inner surface of the closed cross-sectional structure in a cross-sectional view,
The fastening part structure includes a screw part formed on the second metal member and a male screw member screwed into the female screw part from the outside of the closed cross-sectional structure.   The fastening part structure according to claim 1, wherein at least one of the first and second metal members is bonded to the plate member.   The said fastening means fastens a to-be-fastened member between the said 1st metal member and the load receiving part provided in the opposite side to the said board | plate material side with respect to this 1st metal member. Or the fastening part structure of Claim 2. The interval setting means is a metal spacer portion located between the first and second metal members,
The fastening part according to claim 3 , wherein the fastening means fastens the fastened member, the first metal member, and the spacer part together between the load receiving part and the second metal member. Construction. The fastening means includes
A threaded portion formed on the second metal member;
The fastening part structure according to claim 4 , further comprising a male screw member having one end screwed to the female screw part and provided with the load receiving part on the other end side . A stepped washer that penetrates the male screw member constituting the fastening means;
The fastening portion according to claim 4 or 5 , wherein a flange portion of the stepped washer is the first metal member, and a portion protruding in the axial direction from the flange portion of the stepped washer is the spacer portion. Construction. The fastening means includes
A threaded portion formed on the second metal member;
In a state where a flange portion as the first metal member extends from between the first male screw portion and the second male screw portion, and the first male screw portion is screwed to the female screw portion, A male screw member that fastens the fastened member between a flange portion and a nut member screwed into the second male screw portion;
It is composed including
The fastening part structure according to claim 3 , wherein the distance setting means sets the distance between the first and second metal members according to a screwing amount of the first male screw part to the female screw part . The interval setting means includes a metal spacer portion that is located between the flange portion and the second metal member and limits a screwing amount of the first male screw portion to the female screw portion. The fastening part structure of Claim 7 comprised by these . The fastening portion structure according to claim 8 , wherein the spacer portion is formed integrally with the male screw member adjacent to the flange portion in an axial direction of the male screw member . The fastening portion structure according to claim 8 , wherein the spacer portion is configured as a separate body independent of any of the first and second metal members . The fastening part according to any one of claims 8 to 10 , wherein a fastening torque input part by a tool is formed between the flange part and the second male thread part in the axial direction of the male screw member. Construction. The plate material has a countersink hole that exposes an end face of the second metal member,
The fastening portion structure according to any one of claims 4 to 6, and 8 to 11, wherein a thickness of the spacer portion is larger than a depth of the counterbore hole.

Images