WO2018198213A1 - Structure pour ajustement par pression et fixation d'un collier métallique à un élément en résine et procédé de fixation par ajustement par pression - Google Patents

Structure pour ajustement par pression et fixation d'un collier métallique à un élément en résine et procédé de fixation par ajustement par pression Download PDF

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Publication number
WO2018198213A1
WO2018198213A1 PCT/JP2017/016464 JP2017016464W WO2018198213A1 WO 2018198213 A1 WO2018198213 A1 WO 2018198213A1 JP 2017016464 W JP2017016464 W JP 2017016464W WO 2018198213 A1 WO2018198213 A1 WO 2018198213A1
Authority
WO
WIPO (PCT)
Prior art keywords
press
resin member
metal collar
main body
hole
Prior art date
Application number
PCT/JP2017/016464
Other languages
English (en)
Japanese (ja)
Inventor
大久保　洋志
Original Assignee
日産自動車株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日産自動車株式会社 filed Critical 日産自動車株式会社
Priority to PCT/JP2017/016464 priority Critical patent/WO2018198213A1/fr
Publication of WO2018198213A1 publication Critical patent/WO2018198213A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B4/00—Shrinkage connections, e.g. assembled with the parts at different temperature; Force fits; Non-releasable friction-grip fastenings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread

Definitions

  • the present invention relates to a press-fit fixing structure to a resin member of a metal collar and a press-fit fixing method.
  • a metal collar is attached to a through-hole formed in a resin member such as FRP (Fiber Reinforced Plastics), and another part is fixed to the resin member via the metal collar. Another part is secured to the metal collar by fasteners such as bolts and nuts.
  • fasteners such as bolts and nuts.
  • Patent Document 1 discloses a metal collar fixed to a through hole of a resin member with an adhesive. Patent Document 1 also discloses another member (metal plate) fixed to a resin member via a metal collar.
  • An object of the present invention is to prevent a change in the positional relationship between a resin member and a metal collar press-fitted into the resin member, and to securely fix the resin member and the metal collar.
  • the resin member 1 in the press-fit fixing structure according to the present embodiment will be described.
  • the resin member 1 of this embodiment is formed of CFRP (Carbon Fiber Reinforced Plastics).
  • CFRP Carbon Fiber Reinforced Plastics
  • the resin member 1 is formed with a through-hole 1h into which a metal collar 2 described later is press-fitted and fixed.
  • the inner diameter of the through hole 1h before the metal collar 2 is press-fitted is D.
  • the metal collar 2 includes a cylindrical main body 2b and a flange 2f extending outward from one end (upper end in the figure) of the peripheral side surface of the main body 2b.
  • An insertion hole 2h through which the bolt 5 is inserted is formed at the center of the main body 2b.
  • the outer diameter of the main body 2b is d.
  • the outer diameter d of the main body 2b is larger than the inner diameter D of the through hole 1h (D ⁇ d).
  • a tapered surface is formed on the outer peripheral edge of the other end (the lower end in the figure) of the peripheral side surface of the main body 2b, so that the main body 2b can be easily press-fitted into the through hole 1h.
  • the center part of the outer surface of the flange 2f is a flat surface (seat surface of the volt
  • the outer peripheral part is made thin, so that an outer peripheral edge is approached. That is, the outer peripheral portion of the outer surface of the flange 2f is an inclined surface, and the step on the surface of the resin member 1 is reduced.
  • FIG. 2 shows a state in which the metal plate 4 is fixed to the resin member 1 through the metal collar 2.
  • bolts 5 and nuts 6 as fasteners are used.
  • the fastener (bolt 5 and nut 6) and the metal plate 4 are not components of the press-fit fixing structure of this embodiment.
  • the coefficient ⁇ is 0.0007 or more and 0.0090 or less. That is, the press-fit fixing structure of this embodiment is constructed by the through hole 1h (resin member 1) and the main body 2b (metal collar 2) satisfying the coefficient ⁇ .
  • the fastening allowance ⁇ can be measured nondestructively from the residual stress of the metal collar 2 (main body 2b) after the through hole 1h. Further, the above-described lower limit (0.0007) and upper limit (0.0090) of the coefficient ⁇ will be described in detail later.
  • the through hole 1h is formed in the resin member 1 (step S10). Since the metal collar 2 (outer diameter d) to be press-fitted has already been determined, the through hole 1h (inner diameter D) is formed so as to satisfy the coefficient ⁇ described above.
  • the adhesive 3 is applied to at least one of the inner surface of the flange 2f and the periphery of the through hole 1h facing the inner surface (step S20). In the present embodiment, the adhesive 3 is applied only to the inner surface of the flange 2f (see FIG. 1).
  • the adhesive 3 is also applied to at least one of the peripheral side surface of the main body 2b of the metal collar 2 and the inner peripheral edge of the through hole 1h (step S20). In the present embodiment, the adhesive 3 is applied to both the peripheral side surface of the main body 2b and the inner peripheral edge of the through hole 1h (see FIG. 1).
  • step S30 the main body 2b of the metal collar 2 is press-fitted into the through hole 1h (step S30).
  • the through hole 1h is slightly expanded.
  • a part of the adhesive 3 applied to the peripheral side surface of the main body 2b and the inner peripheral edge of the through hole 1h is scraped, but the remaining part enters the inside of the resin member 1 (CFRP) from the inner peripheral edge of the through hole 1h. (See FIG. 2).
  • the adhesive 3 is cured (step S40).
  • the adhesive 3 is cured by evaporating the solvent in the adhesive 3, reacting with oxygen or moisture in the air, and curing by receiving heat or ultraviolet rays.
  • the lower limit of the coefficient ⁇ is a limit value on the loose press-fitting side to prevent the metal collar 2 from rotating together with the fastener when the fastener (bolt 5 and nut 6) is fastened to the metal collar 2.
  • the upper limit value of the coefficient ⁇ is a limit value on the tight press-fitting side, and is a value for preventing adverse effects caused by the tight press-fitting (for example, cracking of the resin member 1 or excessive deformation [strain exceeding the allowable strain]). is there.
  • [Table 1] shows the results of actual examination by variously changing the size of the fastener, the inner diameter D of the through hole 1h, and the fastening allowance ⁇ .
  • the fastener sizes M6 to M14 indicate the nominal diameter of the bolt 5, and a desired fastening torque is defined for each size. For example, the nominal diameter of the M6 bolt is 6 mm. Naturally, as the size of the fastener increases, the size (diameter) of the through hole 1h also increases.
  • the values in [Table 1] are the values of the coefficient ⁇ .
  • the center range surrounded by the thick line in [Table 1] is a case where an OK determination is obtained.
  • the NG range above the OK range is an NG determination when the press-fitting is too loose, and the NG range below the OK range is an NG determination when the press-fitting is too tight.
  • Tc is the tightening torque of the fastener (bolt 5 and nut 6)
  • Ts is the slip limit torque due to press-fitting into the through hole 1h of the resin member 1 of the body 2b of the metal collar 2, and the inner surface of the flange 2f of the metal collar 2 and the resin member
  • the slip limit torque due to the adhesive 3 with the surface of 1 is Tas.
  • the slip limit torque Ts between the peripheral side part of the main body 2b and the inner peripheral edge of the through hole the slip resistance effect by the adhesive 3 with respect to the slip resistance effect due to press-fitting is small. Therefore, the anti-slip effect by the adhesive 3 between the peripheral side portion of the main body 2b and the inner peripheral edge of the through hole is not considered here.
  • conditional expression for preventing the metal collar 2 from idling due to the fastening torque of the fastener is the following expression (1).
  • the press-fit slip limit torque Ts is obtained from the following formula (2).
  • Ts r ⁇ cf PS (2)
  • r radius of through-hole 1h after press-fitting metal collar 2
  • ⁇ cf coefficient of friction between metal collar 2 and resin member 1 (CFRP)
  • P contact surface pressure between main body 2b and through-hole 1h
  • said contact surface pressure P is obtained from the following formula (3).
  • P ⁇ E / ⁇ (Ds 2 + Dh 2 ) / (Ds 2 ⁇ Dh 2 ) + ⁇ (3)
  • Ds outer diameter of the main body 2b of the metal collar 2 (d in the above embodiment)
  • Dh inner diameter of the through hole 1h before the metal collar 2 is press-fitted (D in the above embodiment)
  • E Young's modulus of resin member 1 (CFRP)
  • ⁇ Poisson's ratio of resin member 1 (CFRP)
  • Tas r ⁇ a S (4) ⁇ a : Adhesive strength between the inner surface of the flange 2f and the surface of the resin member 1
  • the upper limit value of the coefficient ⁇ is set to 0.0090 from the numerical value in the above [Table 1] because various factors such as the fiber orientation direction of the resin member 1 (CFRP) influence.
  • the outer surface of the flange 2f of the metal collar 2 also functions as a seating surface for the fastener. For this reason, the size of the flange 2f is affected by the size of the fastener. Accordingly, the area of the adhesive 3 between the inner surface of the flange 2f and the surface of the resin member 1 facing the inner surface is also affected.
  • the metal collar 2 since the metal collar 2 (main body 2b) is press-fitted into the resin member 1 (through hole 1h), the peripheral side surface of the main body 2b and the inner peripheral edge of the through hole 1h.
  • the layer of the adhesive 3 is not formed between them, and the creep of the adhesive 3 does not occur. Therefore, a change in the positional relationship between the resin member 1 and the metal collar 2 can be prevented, and the positional relationship can be maintained for a long time.
  • a metal plate (another member) 4 is fixed to the resin member 1 via the metal collar 2, the positional relationship between the resin member 1 (metal collar 2) and the metal plate 4 can also be maintained for a long time.
  • the resin member 1 and the metal collar 2 can be securely fixed by press-fitting the main body 2b and the through hole 1h.
  • the press-fitting between the peripheral side surface of the main body 2b and the inner peripheral edge of the through hole 1h and the fixing with the adhesive 3 in this embodiment are stronger than the fixing with only the adhesive 3 shown in FIG.
  • the fixing by the adhesive 3 between the inner surface of the resin and the surface of the resin member 1 can be reduced. Therefore, the outer diameter of the flange 2f can be reduced.
  • the distance between adjacent metal collars 2 can be shortened (compared to the fixing structure shown in FIGS. 4 and 5). That is, the number of fixed points of the metal plate (another member) 4 shown in FIG. 2 per unit area can be increased.
  • the resin member 1 of this embodiment was CFRP
  • other FRPs such as GFRP (Glass
  • GFRP Glass
  • another member fixed to the resin member 1 via the metal collar 2 is the metal plate 4, but the other member is not limited to the metal plate 4.
  • the bolt 5 and the nut 6 are used as the fastener, and the preferable range of the coefficient ⁇ described above is determined in consideration of the fastening torque.
  • the fasteners are not limited to the bolts 5 and the nuts 6, and other fasteners such as rivets may be used for fixing other members (such as the metal plate 4).
  • the press-fit fixing structure to the resin member of the metal collar which can prevent the change of the positional relationship between a resin member and a metal collar, and can fix a resin member and a metal collar reliably. And a press-fitting and fixing method.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

La présente invention concerne une structure pour ajuster par pression et fixer un collier métallique à un élément en résine, comprenant: un collier métallique ayant un corps principal cylindrique et une bride s'étendant vers l'extérieur à partir de la surface latérale circonférentielle du corps principal; un élément en résine ayant un trou traversant formé à l'intérieur de celui-ci qui comporte le corps principal du collier métallique ajusté par pression; et un adhésif appliqué entre le collier métallique et l'élément en résine. Le diamètre externe du corps principal du collier métallique est d, le diamètre interne du trou traversant avant que le corps principal ne soit ajusté par pression à l'intérieur de celui-ci est D, et l'interférence du corps principal par rapport au trou traversant est δ = (D–d). Un coefficient α défini par δ = αD est de 0,0007 à 0,0090.
PCT/JP2017/016464 2017-04-26 2017-04-26 Structure pour ajustement par pression et fixation d'un collier métallique à un élément en résine et procédé de fixation par ajustement par pression WO2018198213A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/016464 WO2018198213A1 (fr) 2017-04-26 2017-04-26 Structure pour ajustement par pression et fixation d'un collier métallique à un élément en résine et procédé de fixation par ajustement par pression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/016464 WO2018198213A1 (fr) 2017-04-26 2017-04-26 Structure pour ajustement par pression et fixation d'un collier métallique à un élément en résine et procédé de fixation par ajustement par pression

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI700437B (zh) * 2019-01-09 2020-08-01 達霆精密工業有限公司 可存置扣件焊錫的結構
US11486520B2 (en) 2019-07-25 2022-11-01 Newfrey Llc Press-fit, friction-retention coupling assembly between hard, inflexible material components

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4985979A (en) * 1989-01-23 1991-01-22 Mcdonnell Douglas Corporation Method of installing interference fit sleeved fasteners having radiused intersection for stress coining
JP2003079082A (ja) * 2001-09-03 2003-03-14 Hitachi Powdered Metals Co Ltd 永久磁石型ロータおよびその製造方法
JP2005178615A (ja) * 2003-12-19 2005-07-07 Sanyo Electric Co Ltd 車両用の電源装置
JP2009204139A (ja) * 2008-02-29 2009-09-10 Ntn Corp 転がり軸受、およびそれを用いた主軸装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4985979A (en) * 1989-01-23 1991-01-22 Mcdonnell Douglas Corporation Method of installing interference fit sleeved fasteners having radiused intersection for stress coining
JP2003079082A (ja) * 2001-09-03 2003-03-14 Hitachi Powdered Metals Co Ltd 永久磁石型ロータおよびその製造方法
JP2005178615A (ja) * 2003-12-19 2005-07-07 Sanyo Electric Co Ltd 車両用の電源装置
JP2009204139A (ja) * 2008-02-29 2009-09-10 Ntn Corp 転がり軸受、およびそれを用いた主軸装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI700437B (zh) * 2019-01-09 2020-08-01 達霆精密工業有限公司 可存置扣件焊錫的結構
US11486520B2 (en) 2019-07-25 2022-11-01 Newfrey Llc Press-fit, friction-retention coupling assembly between hard, inflexible material components

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