WO2018198213A1 - Structure for press-fitting and fixing metal collar to resin member and press-fit fixing method - Google Patents

Structure for press-fitting and fixing metal collar to resin member and press-fit fixing method 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
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WO
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Prior art keywords
press
resin member
metal collar
main body
hole
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PCT/JP2017/016464
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French (fr)
Japanese (ja)
Inventor
大久保　洋志
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日産自動車株式会社
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Priority to PCT/JP2017/016464 priority Critical patent/WO2018198213A1/en
Publication of WO2018198213A1 publication Critical patent/WO2018198213A1/en

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    • 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

A structure for press-fitting and fixing a metal collar to a resin member, comprising: a metal collar having a cylindrical main body and a flange extending outwards from the circumferential side surface of the main body; a resin member having a through-hole formed therein that has the main body of the metal collar press-fitted therein; and an adhesive applied between the metal collar and the resin member. The outer diameter of the main body of the metal collar is d, the inner diameter of the through-hole prior to having the main body press-fitted therein is D, and the interference of the main body relative to the through-hole is δ = (D–d). A coefficient α defined by δ = αD is 0.0007–0.0090.

Description

金属カラーの樹脂部材への圧入固定構造、及び、圧入固定方法Press-fit fixing structure and press-fit fixing method of metal collar to resin member
　本発明は、金属カラーの樹脂部材への圧入固定構造[press-fit fixing structure]及び圧入固定方法に関する。 The present invention relates to a press-fit fixing structure to a resin member of a metal collar and a press-fit fixing method.
　金属カラーをＦＲＰ（Fiber Reinforced Plastics）などの樹脂部材に形成された貫通孔に取り付け、金属カラーを介して樹脂部材に別の部品を固定する場合がある。別の部品は、ボルト・ナットなどの締結具によって金属カラーに固定される。締結具の締結力が樹脂部材に直接作用すると、樹脂部材にクリープが生じて締結力が低下する。このため、上述した金属カラーを樹脂部材に固定して、この金属カラーに別の部品を固定する。 In some cases, 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. When the fastening force of the fastener acts directly on the resin member, creep occurs in the resin member and the fastening force decreases. For this reason, the metal collar mentioned above is fixed to a resin member, and another component is fixed to this metal collar.
　下記特許文献１は、樹脂部材の貫通孔に接着剤で固定された金属カラーを開示している。特許文献１は、金属カラーを介して樹脂部材に固定された別の部材（金属板）も開示している。 The following 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.
特開２００７－３３２９７５号公報JP 2007-332975 A
　しかし、特許文献に開示された固定構造において、樹脂部材や金属板に、締結具（ボルト）のせん断方向の外力が負荷されると、この外力は金属カラーと樹脂部材の貫通孔の内周縁との間の接着剤に作用する。従って、接着剤にはクリープが生じて変形し、樹脂部材、金属カラー及び金属板の間の位置関係が変化してしまう。例えば、樹脂部材が車体を構成する車体で、金属板がドアのヒンジの場合、位置関係の変化によってドアの開閉に支障が生じる場合がある。 However, in the fixing structure disclosed in the patent document, when an external force in the shearing direction of the fastener (bolt) is applied to the resin member or the metal plate, the external force is generated between the metal collar and the inner peripheral edge of the through hole of the resin member. Acting on the adhesive between. Accordingly, creep occurs in the adhesive and deforms, and the positional relationship among the resin member, the metal collar, and the metal plate changes. For example, when the resin member is a vehicle body constituting the vehicle body and the metal plate is a door hinge, there is a case where the opening and closing of the door may be hindered due to a change in the positional relationship.
　本発明の目的は、樹脂部材とこの樹脂部材に圧入された金属カラーとの間の位置関係の変化を防止でき、かつ、樹脂部材と金属カラーとを確実に固定することにある。 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.
　本発明の特徴は、金属カラーの本体の外径がｄであり、当該本体が圧入される前の樹脂部材の貫通孔の内径がＤであり、貫通孔に対する本体の締め代がδ＝（Ｄ－ｄ）であるときに、δ＝αＤで規定される係数αが、０．０００７以上０．００９０以下である。 The feature of the present invention is that the outer diameter of the main body of the metal collar is d, the inner diameter of the through hole of the resin member before the main body is press-fitted is D, and the tightening margin of the main body with respect to the through hole is δ = (D -D), the coefficient α defined by δ = αD is 0.0007 or more and 0.0090 or less.
　上記特徴によれば、樹脂部材と金属カラーとの間の位置関係の変化を防止でき、かつ、樹脂部材と金属カラーとを確実に固定することができる。 According to the above feature, it is possible to prevent a change in the positional relationship between the resin member and the metal collar, and to securely fix the resin member and the metal collar.
実施形態に係る圧入固定構造における金属カラー及び樹脂部材を分離して示す断面図である。It is sectional drawing which isolate | separates and shows the metal collar and resin member in the press-fit fixing structure which concerns on embodiment. 上記圧入固定構造の断面図である。It is sectional drawing of the said press-fit fixing structure. 実施形態に係る圧入固定方法のフローチャートである。It is a flowchart of the press-fit fixing method which concerns on embodiment. 従来の固定構造を示す断面図である。It is sectional drawing which shows the conventional fixing structure. 上記の従来の固定構造において接着剤にクリープが生じた状態を示す断面図である。It is sectional drawing which shows the state which the creep produced in the adhesive agent in said conventional fixing structure.
　以下、金属カラーの樹脂部材へ圧入固定構造（圧入固定方法）の実施形態について、図面を参照しつつ説明する。 Hereinafter, an embodiment of a press-fit fixing structure (press-fit fixing method) to a metal collar resin member will be described with reference to the drawings.
　まず、本実施形態に係る圧入固定構造における樹脂部材１について説明する。本実施形態の樹脂部材１は、ＣＦＲＰ（Carbon Fiber Reinforced Plastics）で形成されている。図１及び図２に示されるように、樹脂部材１には、後述する金属カラー２が圧入固定された貫通孔１ｈが形成されている。金属カラー２が圧入される前の貫通孔１ｈの内径はＤである。 First, 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). As shown in FIGS. 1 and 2, 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.
　金属カラー２は、円筒状の本体２ｂと、本体２ｂの周側面の一端（図では上端）から外方に延出されたフランジ２ｆとからなる。本体２ｂの中央には、ボルト５が挿通される挿通孔２ｈが形成されている。本体２ｂの外径はｄである。ここで、金属カラー２を貫通孔１ｈに圧入する前は、本体２ｂの外径ｄの方が貫通孔１ｈの内径Ｄよりも大きい（Ｄ＜ｄ）。本体２ｂの周側面の他端（図では下端）の外周縁にはテーパー面が形成されており、本体２ｂを貫通孔１ｈに圧入し易くなっている。また、フランジ２ｆの外面の中央部は平坦面（ボルト５の座面）であるが、外周部は外周縁に近づくほど薄くされている。即ち、フランジ２ｆの外面の外周部は傾斜面とされており、樹脂部材１表面の段差が小さくされている。 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. Here, before the metal collar 2 is press-fitted into the through hole 1h, 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. Moreover, although the center part of the outer surface of the flange 2f is a flat surface (seat surface of the volt | bolt 5), 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.
　なお、図２は、金属カラー２を介して、樹脂部材１に金属板４が固定されている状態を示している。金属板４の固定には、締結具としての、ボルト５及びナット６が用いられている。締結具（ボルト５及びナット６）及び金属板４は、本実施形態の圧入固定構造の構成要素ではない。 FIG. 2 shows a state in which the metal plate 4 is fixed to the resin member 1 through the metal collar 2. For fixing the metal plate 4, 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.
　樹脂部材１の貫通孔１ｈの内径Ｄ及び金属カラー２の本体２ｂの外径ｄに関して、締め代[interference]δ＝（Ｄ－ｄ）＝αＤの関係を満たす係数αを定義する。本実施形態の圧入固定構造では、係数αは０．０００７以上０．００９０以下である。即ち、この係数αを満たす貫通孔１ｈ（樹脂部材１）と本体２ｂ（金属カラー２）によって、本実施形態の圧入固定構造が構築されている。なお、締め代δは、貫通孔１ｈにされた後の金属カラー２（本体２ｂ）の残留応力から、非破壊計測が可能である。また、係数αの上述した下限値（０．０００７）および上限値（０．００９０）については、追って詳しく説明する。 For the inner diameter D of the through hole 1h of the resin member 1 and the outer diameter d of the main body 2b of the metal collar 2, a coefficient α that satisfies the relationship of interference [interference] δ = (D−d) = αD is defined. In the press-fit structure of this embodiment, the coefficient α 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 α. The fastening allowance δ 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 α will be described in detail later.
　次に、図２に示される圧入固定構造を構築する手順、即ち、圧入固定方法について、図３のフローチャートを参照しつつ説明する。ただし、樹脂部材１への金属カラー２の圧入固定方法のみを説明し、締結具（ボルト５及びナット６）を用いた金属板４の固定は説明しない。金属板４の固定は通常の方法で行われる。また、樹脂部材１に複数の金属カラー２を固定する場合、通常は、全ての固定箇所についての一つの処理が終わった後に次の処理に移り、全ての固定箇所について当該次の処理が行われる。しかし、ここでは、一つの貫通孔１ｈに一つの金属カラー２を圧入固定する手順を説明する。 Next, the procedure for constructing the press-fit fixing structure shown in FIG. 2, that is, the press-fit fixing method will be described with reference to the flowchart of FIG. However, only the press-fitting and fixing method of the metal collar 2 to the resin member 1 will be described, and fixing of the metal plate 4 using the fasteners (bolts 5 and nuts 6) will not be described. The metal plate 4 is fixed by a normal method. When a plurality of metal collars 2 are fixed to the resin member 1, usually, after one process for all the fixing points is completed, the process proceeds to the next process, and the next process is performed for all the fixing points. . However, here, a procedure for press-fitting and fixing one metal collar 2 in one through-hole 1h will be described.
　まず、樹脂部材１に貫通孔１ｈを形成する（ステップＳ１０）。圧入する金属カラー２（外径ｄ）はすでに決まっているので、貫通孔１ｈ（内径Ｄ）は、上述した係数αを満たすように形成される。次に、フランジ２ｆの内面、及び、この内面と対向する貫通孔１ｈの周囲の少なくとも一方に接着剤３を塗布する（ステップＳ２０）。本実施形態では、フランジ２ｆの内面にのみ接着剤３が塗布される（図１参照）。また、金属カラー２の本体２ｂの周側面、及び、貫通孔１ｈの内周縁の少なくとも一方にも接着剤３が塗布される（ステップＳ２０）。本実施形態では、本体２ｂの周側面及び貫通孔１ｈの内周縁の両方に接着剤３が塗布される（図１参照）。 First, 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 α described above. Next, 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).
　そして、金属カラー２の本体２ｂを貫通孔１ｈに圧入する（ステップＳ３０）。この時、貫通孔１ｈは若干押し広げられる。また、本体２ｂの周側面及び貫通孔１ｈの内周縁に塗布された接着剤３の一部は掻き出されるが、残りは貫通孔１ｈの内周縁から樹脂部材１（ＣＦＲＰ）の内部に侵入する（図２参照）。その後、接着剤３が硬化される（ステップＳ４０）。なお、接着剤３は、接着剤３中の溶剤が蒸発して硬化したり、空気中の酸素や水分と反応して硬化したり、熱や紫外線を受けて硬化したりする。 Then, the main body 2b of the metal collar 2 is press-fitted into the through hole 1h (step S30). At this time, the through hole 1h is slightly expanded. In addition, 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). Thereafter, 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.
　上述した、係数αの好ましい範囲（０．０００７≦α≦０．００９０）について説明する。上述したδ＝（Ｄ－ｄ）＝αＤの関係から分かるように、金属カラー２は、係数αが小さいほどゆるく圧入され、係数αが大きいほどきつく圧入される。本実施形態ではＤ＜ｄなのでαは正であるが、仮にαが負の場合（Ｄ＞ｄ）は、図４に示されるように樹脂部材１と金属カラー２との間に隙間が形成され、この隙間に接着剤３が充填される（上述した特許文献１と同様の構成）。このような構造の場合、樹脂部材１や金属板４に図５に示される外力Ｆが作用すると、図５中のＡ部の接着剤３には、圧縮力によるクリープが生じてしまう。 The preferable range (0.0007 ≦ α ≦ 0.0090) of the coefficient α described above will be described. As can be seen from the relationship of δ = (D−d) = αD described above, the metal collar 2 is more gently press-fitted as the coefficient α is smaller and tighter as the coefficient α is larger. In this embodiment, since D <d, α is positive. However, if α is negative (D> d), a gap is formed between the resin member 1 and the metal collar 2 as shown in FIG. The gap 3 is filled with the adhesive 3 (the same configuration as in Patent Document 1 described above). In the case of such a structure, when the external force F shown in FIG. 5 acts on the resin member 1 or the metal plate 4, creep due to compressive force is generated in the adhesive 3 in the portion A in FIG. 5.
　係数αの下限値は、ゆるい圧入側の限界値であり、金属カラー２に締結具（ボルト５及びナット６）が締結される際に金属カラー２が締結具と共回りするのを防止するための値である。一方、係数αの上限値は、きつい圧入側の限界値であり、きつい圧入による弊害（例えば、樹脂部材１の割れや過度の変形［許容歪を超える歪］など）を防止するための値である。 The lower limit of the coefficient α 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. Is the value of On the other hand, the upper limit value of the coefficient α 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.
　締結具のサイズ、貫通孔１ｈの内径Ｄ、締め代δを種々変更して実際に検討した結果を、［表１］に示す。なお、締結具のサイズＭ６～Ｍ１４は、ボルト５の呼び径[nominal diameter]を示しており、各サイズごとに所望の締結トルクが規定されている。例えば、Ｍ６ボルトの呼び径は６ｍｍである。当然、締結具のサイズが大きくなれば、貫通孔１ｈのサイズ（直径）も大きくなる。［表１］中の値が係数αの値である。［表１］中の太線で囲われた中央の範囲がＯＫ判定を得たケースである。ＯＫ範囲より上方のＮＧ範囲は、圧入がゆる過ぎた場合のＮＧ判定であり、ＯＫ範囲より下方のＮＧ範囲は、圧入がきつ過ぎた場合のＮＧ判定である。 [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 δ. 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 α. 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.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　上側のＯＫ範囲の境界値から、係数αの下限値は０．０００７（Ｍ１４－Ｄ：２９ｍｍの値）とすべきことが分かる。同様に、下側のＯＫ範囲の境界値から、係数αの上限値は０．００９０（Ｍ１０－Ｄ：２１ｍｍ及びＭ１４－Ｄ：２９ｍｍの値）とすべきことが分かる。 From the boundary value of the upper OK range, it can be seen that the lower limit value of the coefficient α should be 0.0007 (M14-D: 29 mm value). Similarly, it can be understood from the boundary value of the lower OK range that the upper limit value of the coefficient α should be 0.0090 (values of M10-D: 21 mm and M14-D: 29 mm).
　ここで、係数αの下限値について検証した。締結具（ボルト５及びナット６）の締め付けトルクをＴｃ、金属カラー２の本体２ｂの樹脂部材１の貫通孔１ｈへの圧入によるスリップ限界トルクをＴｓ、金属カラー２のフランジ２ｆの内面と樹脂部材１の表面との間の接着剤３によるスリップ限界トルクをＴａｓとする。なお、本体２ｂの周側部と貫通孔内周縁との間のスリップ限界トルクＴｓに関して、圧入による耐スリップ効果に対する接着剤３による耐スリップ効果は小さい。従って、本体２ｂの周側部と貫通孔内周縁との間の接着剤３による耐スリップ効果は、ここでは考慮しない。 Here, the lower limit value of the coefficient α was verified. 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. In addition, regarding 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.
　ここで、締結具の締結トルクによって金属カラー２が空回りしないための条件式は、下記式（１）である。
　　　Ｔｃ＜（Ｔｓ＋Ｔａｓ）　…（１） Here, the conditional expression for preventing the metal collar 2 from idling due to the fastening torque of the fastener is the following expression (1).
Tc <(Ts + Tas) (1)
　圧入スリップ限界トルクＴｓは、下記式（２）より得られる。
　　　Ｔｓ＝ｒμｃｆＰＳ　…（２）
　ｒ：金属カラー２圧入後の貫通孔１ｈの半径
　μｃｆ：金属カラー２と樹脂部材１（ＣＦＲＰ）との間の摩擦係数
　Ｐ：本体２ｂと貫通孔１ｈとの間の接触面圧
　Ｓ：本体２ｂと貫通孔１ｈとの間の接触面積［＝πｒｔ］
　ｔ：樹脂部材１の厚さ（＝貫通孔１ｈの深さ・高さ） The press-fit slip limit torque Ts is obtained from the following formula (2).
Ts = rμ cf PS (2)
r: radius of through-hole 1h after press-fitting metal collar 2 μ 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 S: main body Contact area between 2b and through-hole 1h [= πrt]
t: thickness of the resin member 1 (= depth / height of the through-hole 1h)
　ここで、上記の接触面圧Ｐは下記式（３）より得られる。
　　　Ｐ＝γＥ／｛（Ｄｓ２＋Ｄｈ２）／（Ｄｓ２－Ｄｈ２）＋ν｝　…（３）
　γ：圧入歪［＝（Ｄｓ－Ｄｈ）／Ｄｈ］
　Ｄｓ：金属カラー２の本体２ｂの外径（上記実施形態ではｄ）
　Ｄｈ：金属カラー２圧入前の貫通孔１ｈの内径（上記実施形態ではＤ）
　Ｅ：樹脂部材１（ＣＦＲＰ）のヤング率
　ν：樹脂部材１（ＣＦＲＰ）のポアソン比 Here, said contact surface pressure P is obtained from the following formula (3).
P = γE / {(Ds 2 + Dh 2 ) / (Ds 2 −Dh 2 ) + ν} (3)
γ: press-fit strain [= (Ds−Dh) / Dh]
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) ν: Poisson's ratio of resin member 1 (CFRP)
　接着スリップ限界トルクＴａｓは、下記式（４）より得られる。
　　　Ｔａｓ＝ｒσａＳ　…（４）
　σａ：フランジ２ｆの内面と樹脂部材１の表面との間の接着強度 The adhesion slip limit torque Tas is obtained from the following equation (4).
Tas = rσ a S (4)
σ a : Adhesive strength between the inner surface of the flange 2f and the surface of the resin member 1
　上記式（１）～（４）を用いて締め代δ＝０．０１及び０．０２に関して検証したところ、係数αの数値及びＯＫ／ＮＧの判定は上記［表１］の数値及び判定とほぼ一致した。締め代δ＝０．０１では締結具のサイズによってはＮＧ判定となり、締め代δ＝０．０２では全てのサイズでＯＫ判定となった（その際の係数αの下限値は０．０００７）。 As a result of verifying the interference δ = 0.01 and 0.02 using the above formulas (1) to (4), the numerical value of the coefficient α and the determination of OK / NG are almost the same as the numerical value and the determination of [Table 1]. Matched. When the tightening allowance δ = 0.01, NG determination was made depending on the size of the fastener, and when the tightening allowance δ = 0.02, OK determination was made for all sizes (the lower limit value of the coefficient α at that time was 0.0007).
　係数αの上限値については、樹脂部材１（ＣＦＲＰ）の繊維の配向方向など、様々な要因が影響するため、上記［表１］の数値から０．００９０とした。 The upper limit value of the coefficient α 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.
　なお、金属カラー２のフランジ２ｆの外面は、締結具の座面としても機能する。このため、フランジ２ｆの大きさは締結具のサイズの影響を受ける。それに伴って、フランジ２ｆの内面と当該内面に対向する樹脂部材１の表面との間の接着剤３の面積も影響を受ける。 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.
　本実施形態（圧入固定構造及び圧入固定方法）によれば、金属カラー２（本体２ｂ）が樹脂部材１（貫通孔１ｈ）に圧入されるため、本体２ｂの周側面と貫通孔１ｈの内周縁との間に接着剤３の層は形成されず、接着剤３のクリープは生じない。従って、樹脂部材１と金属カラー２との間の位置関係の変化を防止でき、当該位置関係を長期間維持できる。金属カラー２を介して樹脂部材１に金属板（別の部材）４が固定された場合は、樹脂部材１（金属カラー２）と金属板４との位置関係も長期間維持できる。また、本体２ｂと貫通孔１ｈとの圧入によって、樹脂部材１と金属カラー２とを確実に固定することもできる。 According to this embodiment (press-fit fixing structure and press-fit fixing method), 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. When 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. In addition, 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.
　また、本実施形態によれば、最適な締め代δ（＝αＤ）の範囲を樹脂部材１に形成する貫通孔１ｈの内径Ｄに関する係数αの範囲として設定できる。従って、圧入固定構造の設計や、貫通孔１ｈの内径Ｄの決定を行いやすくできる。 Further, according to the present embodiment, the range of the optimum tightening allowance δ (= αD) can be set as the range of the coefficient α related to the inner diameter D of the through hole 1 h formed in the resin member 1. Therefore, it is possible to easily perform the design of the press-fit fixing structure and the determination of the inner diameter D of the through hole 1h.
　さらに、本実施形態における本体２ｂの周側面と貫通孔１ｈの内周縁との間の圧入及び接着剤３による固定は図４に示される接着剤３のみによる固定よりも強力であるので、フランジ２ｆの内面と樹脂部材１の表面と間の接着剤３による固定を低減できる。従って、フランジ２ｆの外径を小さくすることができる。この結果、隣接する金属カラー２間の距離を（図４及び図５に示される固定構造よりも）短くできる。即ち、図２に示される金属板（別の部材）４の固定点の単位面積当たりの数を増やすことができる。 Furthermore, 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. As a result, 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.
　なお、本実施形態の樹脂部材１はＣＦＲＰであったが、ＧＦＲＰ（Glass Fiber Reinforced Plastics）などの他のＦＲＰでもよいし、ＦＲＰでない樹脂製の部材であってもよい。また、本実施形態では、金属カラー２を介して樹脂部材１に固定される別の部材は金属板４であったが、別の部材は金属板４に限られない。さらに、本実施形態では、締結具としてボルト５及びナット６が用いられ、上述した係数αの好ましい範囲は、それらの締結トルクを考慮して決定された。しかし、締結具はボルト５及びナット６に限定されず、別の部材（金属板４など）の固定にはリベットなどの他の締結具が用いられてもよい。 In addition, although the resin member 1 of this embodiment was CFRP, other FRPs, such as GFRP (Glass | Fiber | Reinforced | Plastics), may be sufficient and it may be a resin-made member which is not FRP. In the present embodiment, 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. Furthermore, in this embodiment, the bolt 5 and the nut 6 are used as the fastener, and the preferable range of the coefficient α described above is determined in consideration of the fastening torque. However, 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).
　本発明によれば、樹脂部材と金属カラーとの間の位置関係の変化を防止でき、かつ、樹脂部材と金属カラーとを確実に固定することのできる、金属カラーの樹脂部材への圧入固定構造及び圧入固定方法を提供できる。 ADVANTAGE OF THE INVENTION According to this invention, 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.
１　　 樹脂部材（ＣＦＲＰ）
１ｈ　 貫通孔
２　　 金属カラー
２ｂ　 本体
２ｆ　 フランジ
２ｈ　 挿通孔
３　　 接着剤
４　　 金属板（別の部材）
５　　 ボルト（締結具）
６　　 ナット（締結具） 1 Resin member (CFRP)
1h Through hole 2 Metal collar 2b Main body 2f Flange 2h Insertion hole 3 Adhesive 4 Metal plate (another member)
5 bolts (fasteners)
6 Nut (fastener)

Claims (2)

  1. 　金属カラーの樹脂部材への圧入固定構造であって、
    　円筒状の本体と当該本体の周側面から外方に延出されたフランジとを有する金属カラーと、
    　前記金属カラーの前記本体が圧入された貫通孔が形成されている樹脂部材と、
    　前記金属カラーと前記樹脂部材との間に塗布された接着剤と、を備えており、
    　前記金属カラーの前記本体の外径がｄであり、前記本体が圧入される前の前記貫通孔の内径がＤであり、前記貫通孔に対する前記本体の締め代がδ＝（Ｄ－ｄ）であり、δ＝αＤで規定される係数αが０．０００７以上０．００９０以下である、圧入固定構造。     It is a press-fit fixing structure to the resin member of the metal collar,
    A metal collar having a cylindrical main body and a flange extending outward from the peripheral side surface of the main body;
    A resin member in which a through hole into which the main body of the metal collar is press-fitted is formed;
    An adhesive applied between the metal collar and the resin member,
    The outer diameter of the main body of the metal collar is d, the inner diameter of the through hole before the main body is press-fitted is D, and the tightening margin of the main body with respect to the through hole is δ = (D−d) A press-fit fixing structure in which a coefficient α defined by δ = αD is 0.0007 or more and 0.0090 or less.
  2. 　金属カラーの樹脂部材への圧入固定方法であって、
    　前記樹脂部材に貫通孔を形成し、
    　前記貫通孔に圧入される円筒状の本体と当該本体の周側面から外方に延出されたフランジとを有する前記金属カラーの前記フランジの内面、及び、前記内面と対向する前記樹脂部材の前記貫通孔の周囲の少なくとも一方に接着剤を塗布するとともに、前記金属カラーの前記本体の周側面、及び、前記樹脂部材の前記貫通孔の内周縁の少なくとも一方にも接着剤を塗布し、
    　前記金属カラーの前記本体を前記樹脂部材の前記貫通孔に圧入する、ことを備えており、
    　前記金属カラーの前記本体の外径がｄであり、前記本体が圧入される前の前記貫通孔の内径がＤであり、前記貫通孔に対する前記本体の締め代がδ＝（Ｄ－ｄ）であり、δ＝αＤで規定される係数αが０．０００７以上０．００９０以下である、圧入固定方法。     A method for press-fitting and fixing a metal collar to a resin member,
    Forming a through hole in the resin member;
    An inner surface of the flange of the metal collar having a cylindrical main body press-fitted into the through-hole and a flange extending outward from a peripheral side surface of the main body, and the resin member facing the inner surface Applying an adhesive to at least one of the periphery of the through hole, and applying an adhesive to at least one of the peripheral side surface of the main body of the metal collar and the inner peripheral edge of the through hole of the resin member,
    Press fitting the main body of the metal collar into the through-hole of the resin member,
    The outer diameter of the main body of the metal collar is d, the inner diameter of the through hole before the main body is press-fitted is D, and the tightening margin of the main body with respect to the through hole is δ = (D−d) A press-fit fixing method in which the coefficient α defined by δ = αD is 0.0007 or more and 0.0090 or less.
PCT/JP2017/016464 2017-04-26 2017-04-26 Structure for press-fitting and fixing metal collar to resin member and press-fit fixing method WO2018198213A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI700437B (en) * 2019-01-09 2020-08-01 達霆精密工業有限公司 Structure for storing fastener solder
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 (en) * 2001-09-03 2003-03-14 Hitachi Powdered Metals Co Ltd Permanent magnet rotor and method of manufacture therefor
JP2005178615A (en) * 2003-12-19 2005-07-07 Sanyo Electric Co Ltd Power supply unit for vehicle
JP2009204139A (en) * 2008-02-29 2009-09-10 Ntn Corp Rolling bearing and main shaft device using the same

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 (en) * 2001-09-03 2003-03-14 Hitachi Powdered Metals Co Ltd Permanent magnet rotor and method of manufacture therefor
JP2005178615A (en) * 2003-12-19 2005-07-07 Sanyo Electric Co Ltd Power supply unit for vehicle
JP2009204139A (en) * 2008-02-29 2009-09-10 Ntn Corp Rolling bearing and main shaft device using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI700437B (en) * 2019-01-09 2020-08-01 達霆精密工業有限公司 Structure for storing fastener solder
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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