WO2003021117A1 - Ball joint assembly and method for manufacturing the same - Google Patents

Ball joint assembly and method for manufacturing the same Download PDF

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Publication number
WO2003021117A1
WO2003021117A1 PCT/JP2001/007604 JP0107604W WO03021117A1 WO 2003021117 A1 WO2003021117 A1 WO 2003021117A1 JP 0107604 W JP0107604 W JP 0107604W WO 03021117 A1 WO03021117 A1 WO 03021117A1
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WO
WIPO (PCT)
Prior art keywords
spherical
housing
joint assembly
port
porto
Prior art date
Application number
PCT/JP2001/007604
Other languages
French (fr)
Japanese (ja)
Inventor
Hiromichi Mizuno
Ryuji Utsuno
Original Assignee
Aoyama Seisakusho Co., Ltd.
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 Aoyama Seisakusho Co., Ltd. filed Critical Aoyama Seisakusho Co., Ltd.
Priority to PCT/JP2001/007604 priority Critical patent/WO2003021117A1/en
Publication of WO2003021117A1 publication Critical patent/WO2003021117A1/en

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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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/0619—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part comprising a blind socket receiving the male part
    • F16C11/0623—Construction or details of the socket member
    • F16C11/0657—Construction or details of the socket member the socket member being mainly made of plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14754—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles being in movable or releasable engagement with the coating, e.g. bearing assemblies

Definitions

  • the present invention relates to a pole joint assembly suitable for an opening / closing mechanism of, for example, a back door or a hood of a vehicle.
  • an opening / closing mechanism Q as shown in FIG. 7 is known as an opening / closing mechanism for, for example, a back door of a vehicle.
  • a proximal end of a pair of left and right elastic In general, a part is pivotally connected to the vehicle body S side, and the tip end of each rod 51 and the door D are rotatably connected via a ball joint assembly 52.
  • a ball joint assembly 52 has a joint member having a substantially spherical portion (hereinafter referred to as a “spherical portion”) 53 k formed at the distal end thereof.
  • spherical recess a substantially spherical recess
  • the joint member 53 and the housing 54 have special shapes and the like, they are generally manufactured by cutting, and the spherical part 53 k and the spherical concave part 54 d are formed by spherical processing. When fitting, it is common to fit by shrink fitting or the like.
  • an object of the present invention is to solve the above problems, reduce the man-hours and costs involved in manufacturing, and provide a lightweight pole joint assembly that slides smoothly without any looseness. I do.
  • a pole joint assembly includes a port having a substantially spherical spherical portion on a base end side of a shaft portion, and rotatably fitted to the spherical portion of the porto.
  • the housing is made of a resin member that is insert-molded around a spherical portion of the port.
  • the housing is made of a resin member and is formed around the spherical portion of the porto by insert molding, so that the molding can be easily performed without any man-hours.
  • the slidability can be secured between the two, but a very small clearance can be set to the extent that no rattling occurs. For this reason, there is no noise due to the clearance even when shifting from the no-load state to the load state. In addition, production costs are reduced, which contributes to weight reduction.
  • the resin material of the housing is arbitrary, but from the viewpoint of strength and / or abrasion resistance, a fiber reinforced resin, for example, polyamide, polyamide imide, polyacetal or the like mixed with glass fiber is preferable.
  • the material of Porto is also arbitrary, and may be metal or resin.
  • a surface of the spherical portion is coated with a lubricant such as a wax, or a surface treatment is performed to reduce the friction coefficient. Is also good.
  • another pole joint assembly according to the present invention is characterized in that a washer is provided at an intermediate portion of a shaft portion of the porto.
  • the washer is used for the purpose of securing a wide contact area when fixing the vehicle to a vehicle body or the like and improving the stability of a bolt. If it is provided integrally, the work of attaching to the vehicle body etc. is facilitated, and for example, by installing such a washer before insert molding, the housing can be inserted. After molding, it is no longer necessary to attach the washer with a rear screw.This prevents problems such as prying or damaging the spherical fitting part between the bolt and the housing when inserting the washer during the rear screw. I can do it.
  • the material of the washer is arbitrary, and may be metal or resin.
  • the time for attaching the washer to the port is arbitrary, and may be before the housing is molded. It may be formed by insert molding, or may be mounted after the insert molding.
  • a method of manufacturing a ball joint assembly includes: a port in which a substantially spherical spherical portion is formed at a base end portion of a shaft portion and a washer is integrated in an intermediate portion of the shaft portion;
  • a pole joint assembly that has a housing that is rotatably fitted to the spherical part of Porto
  • the left and right sides of the port that are slidable on the lower die are restrained by the lower end of the Porto shaft when manufacturing the pole joint assembly.
  • a pair of slide dies constrain the periphery of the shaft near the spherical portion of Porto '.
  • the upper die is lowered to define a cavity for housing formation around the spherical portion, and the resin material is placed in the capity.
  • the housing is integrally formed around the spherical portion of the porto by filling the housing.
  • the undercut is formed by the washer. Is done. For this reason, it is difficult to define a cavity for molding the housing around the spherical portion on the base end side of the shaft using only the upper die and the lower die. Therefore, the housing is formed by using a slide die to avoid the undercut portion generated in the washer portion.
  • the upper die is provided with a pressing portion for pressing the upper surface of the spherical portion of Porto downward
  • the lower die portion where the tip end side of the shaft portion of the bolt is restrained is provided with a nest supported vertically by the urging member and capable of moving up and down.
  • FIG. 1 is an explanatory diagram of a rear door opening / closing mechanism of a vehicle to which a poll joint assembly according to the present invention is applied.
  • FIG. 2 is a perspective view of a pole joint assembly.
  • FIG. 3 is a plan view of the ball joint assembly.
  • FIG. 4 is a sectional view taken along line AA of FIG.
  • FIG. 5 is a cross-sectional view showing a state where the port and the housing are rotated.
  • FIG. 6 is a process diagram illustrating insert molding of the housing.
  • FIG. 7 is an explanatory diagram of a lid opening / closing mechanism of a vehicle to which a conventional pole joint assembly is applied.
  • FIG. 8 is a longitudinal sectional view of a conventional pole joint assembly. BEST MODE FOR CARRYING OUT THE INVENTION
  • the technology of the pole joint assembly according to the present invention is intended to reduce man-hours and costs in manufacturing a pole joint assembly to be applied to, for example, an opening / closing mechanism Q of a rear door D of a vehicle as shown in FIG. It is designed to slide smoothly with no backlash and to reduce weight.
  • the opening / closing mechanism Q of the rear door D of the vehicle is, as shown in FIG. 1, a pair of left and right extensible rods 1 whose base ends are pivotally supported by the vehicle body S, and connected between the rod 1 and the rear door D.
  • the ball joint assembly 2 is installed on the rear door D side as shown in Fig. 2.
  • the bolt 3 and the housing 4 attached to the tip of the rod 1 are physically connected, and the port 3 and the housing 4 are rotatable with respect to each other. In the middle of the bolt 3, a washer 5 is physically mounted.
  • the mounting relationship of the pole joint assembly 2 to the vehicle is not limited to the above relationship, but is opposite to the above relationship, that is, the base end of the mouth 1 is attached to the door D side, It is also possible to arrange the joint assembly 2 on the vehicle body S side.
  • the porto 3 has a substantially spherical spherical portion 3k on the base end side of the shaft portion 3j, and has a spherical surface portion 3k on the distal end side of the shaft portion 3j.
  • the male thread portion n is formed.
  • a cross-shaped hole e for fastening the bolt 3 with a Phillips screwdriver or the like is formed at the tip end surface of the spherical portion 3k (the cross-shaped hole is not limited as long as torque can be transmitted.
  • the shape of the port 3 is not limited as long as a plus screwdriver as a torque transmitting means can transmit torque in the same manner.)
  • such a port 3 is a heading machine or the like. After rolling with screws, it can be manufactured without the need for cutting work by thread rolling.
  • the bolts 3 are not limited to those made of metal, but may be made of fiber reinforced wood, for example, glass fiber mixed, polyamide (eg, nylon 6, nylon 66, nylon 11, nylon 12). , Monomer casting nylon, nylon MXD 6, special heat resistant polyamide glass fiber reinforced resin, etc.), polyamide imide, polyacetal, etc.
  • fiber reinforced wood for example, glass fiber mixed, polyamide (eg, nylon 6, nylon 66, nylon 11, nylon 12). , Monomer casting nylon, nylon MXD 6, special heat resistant polyamide glass fiber reinforced resin, etc.), polyamide imide, polyacetal, etc.
  • the washer 5 is attached to the intermediate portion of the shaft portion 3j of the bolt 3 so that it cannot be removed.
  • the washer 5 is used to secure a large grounding area so that the bolt 3 can be fixed in a stable state when the port 3 is attached to the door D or the like, and such a washer 5 will be described later.
  • the housing 4 may be mounted from the stage before the insert molding in a manner similar to the above, or may be mounted at a stage after the insert molding. If the material is made of metal, it can be attached by shrink fitting, etc. In this case, it can be mounted by insert molding or the like.
  • the housing 4 is made of a resin member such as a fiber reinforced resin (specifically, the resin can be used), and is integrated around the spherical portion 3 k of the port 3 by insert molding.
  • a resin member such as a fiber reinforced resin (specifically, the resin can be used)
  • the housing 4 is made of a resin member, the weight of the pole joint assembly 2 can be reduced.
  • the tip end side of the shaft portion 3j of the port 3 with the washer 5 is constrained to the lower mold 10.
  • the lower mold 10 is provided with a nest 12 supported by a spring 11 as an urging member so as to be able to move up and down, and a holding hole 1 2h formed in the nest 12 is provided. Insert the tip side of the shaft 3 j of the port 3 into the port, and bring the lower surface of the washer 5 into contact with the upper surface of the nest 12.
  • a pair of left and right slide molds 13 slidable on the lower mold 10 are advanced to restrain the periphery of the shaft portion 3j near the spherical portion 3k.
  • the slide mold 13 By using the slide mold 13 in this way, the undercut caused by the washer 5 is avoided.
  • the upper die 14 and the presser pin 15 as the presser are lowered, but when the slide die 13 is closed, the upper die 14 does not close, and the presser pin 15 is Not in contact with top surface.
  • the presser pin 15 presses the upper surface of the spherical portion 3k of the port 3, the nest 12 lowers while compressing and shrinking the lower panel 11, and the upper die 14 is moved downward.
  • Cavity C for housing molding in contact with the upper surface of slide mold 13 Is defined.
  • the position of the spherical portion 3 k is always fixed by pressing the port 3 with the holding pin 15, and the position of the cavity C defined around the spherical portion 3 k is accurately set. I can do it.
  • a small clearance is set between the spherical portion 3 k and the spherical concave portion 4 d to allow sliding.
  • the spherical portion 3k immediately after the insert molding and the spherical concave portion 4d are in close contact with each other, for example, by tilting the axis of the spherical portion 3k to form the housing 4). The close contact state can be easily released).
  • the resin material for the housing 4 is a material that easily adheres to the spherical portion 3k, etc., before the insert molding, the spherical portion 3
  • the surface of k may be coated with a lubricant, wax, or the like, or may be subjected to a surface treatment that reduces the friction coefficient.
  • the porter 3 with the washer 4 attached is inserted into the mold.However, the porto 3 alone is used as an insert, and the cavities for forming the pusher and the housing are simultaneously formed by the mold.
  • the housing 4 and the washer 5 may be insert-molded at the same time by filling the cavity with a resin material.
  • the pole joint assembly 2 described above has been applied to the opening / closing mechanism Q of the rear door D of the vehicle, the present invention is not limited to the rear door D, but may be, for example, a vehicle hood or other opening / closing parts. .
  • the pole joint assembly since a housing made of a resin member is integrally formed around the spherical surface of the bolt, the man-hour and cost for manufacturing are reduced.
  • a light pole joint assembly that slides smoothly without sunsets can be molded.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

A ball joint assembly comprising a bolt (3) having a substantially spherical part (3k) on the base end side of a shaft part (3j), and a housing (4) being fitted rotatably to the spherical part of the bolt, characterized in that the housing (4) is a resin member insert molded around the spherical part of the bolt (3). The weight is reduced while eliminating looseness and manufacture is simplified.

Description

明 細 書 ポールジョイントアッセンプリ及びその製造方法 ,技術分野  Description Pole joint assembly and its manufacturing method, Technical field
本発明は、 例えば車両のバックドアやボンネット等の開閉機構に好適なポ —ルジョイントアッセンプリに関する。 背景技術  The present invention relates to a pole joint assembly suitable for an opening / closing mechanism of, for example, a back door or a hood of a vehicle. Background art
従来、 例えば車両のバックドア等の開閉機構として、 図 7に示すような開 閉機構 Qが知られており、 このような機構 Qでは、 伸縮自在な左右一対の口 ッド 5 1の基端部を車体 S側に枢着し、 各ロッド 5 1の先端側とドア Dとを ボールジョイントアッセンプリ 5 2を介して回動自在に連結するような技術 が一般的である。 そして、 このようなボールジョイントアセンブリ 5 2は、 例えば、 図 8に示すように、 その先端部に実質的に球面状の部分 （以下、 「 球面部」 という） 5 3 kが形成されたジョイント部材 5 3をドア D側に取り 付け、 その先端部に実質的に球面状の凹部 （以下、 「球面凹部」 という） 5 4 dが形成されたハウジング 5 4をロッド 5 1の先端に取り付ける等によつ て構成し、 球面部 5 3 kと球面凹部 5 4 dを球面嵌合させて回動自在にして いる。  Conventionally, an opening / closing mechanism Q as shown in FIG. 7 is known as an opening / closing mechanism for, for example, a back door of a vehicle. In such a mechanism Q, a proximal end of a pair of left and right elastic In general, a part is pivotally connected to the vehicle body S side, and the tip end of each rod 51 and the door D are rotatably connected via a ball joint assembly 52. Then, as shown in FIG. 8, for example, such a ball joint assembly 52 has a joint member having a substantially spherical portion (hereinafter referred to as a “spherical portion”) 53 k formed at the distal end thereof. Attach 53 to the door D side, and attach a housing 54 with a substantially spherical recess (hereinafter referred to as “spherical recess”) at its tip to the tip of the rod 51. Thus, the spherical portion 53k and the spherical concave portion 54d are fitted into a spherical surface so as to be rotatable.
この際、 ジョイント部材 5 3とハウジング 5 4は、 その形状等が特殊であ るため、 切削加工により製造するのが一般的であり、 また、 球面部 5 3 kと 球面凹部 5 4 dを球面嵌合させる際は、 焼き嵌め等によって嵌め込むのが一 般的である。  At this time, since the joint member 53 and the housing 54 have special shapes and the like, they are generally manufactured by cutting, and the spherical part 53 k and the spherical concave part 54 d are formed by spherical processing. When fitting, it is common to fit by shrink fitting or the like.
ところが、 ジョイント部材 5 3やハウジング 5 4を機械加工したり、 焼き 嵌め等によって嵌め合わせる技術は、 工数やコストが嵩むとともに、 嵌合面 のクリアランス調整が難しく、 ガタツキが生じたり、 ドア開閉中に負荷がか かったりすると、 ガ夕音が発生する等の不具合があった。  However, the technology of fitting the joint member 53 and the housing 54 by machining or shrink-fitting increases the man-hours and cost, makes it difficult to adjust the clearance of the mating surface, causes rattling, and prevents the door from opening and closing. When the load was applied, there were problems such as the generation of noise.
また、 ジョイント部材 5 3やハウジング 5 4を金属製にする場合、 重量の 軽減化が図れないという問題もあつた。 発明の開示 When the joint member 53 and the housing 54 are made of metal, There was also a problem that reduction could not be achieved. Disclosure of the invention
そこで本発明は、 上記問題点を解決して、 製造にかかる工数やコストの削 減を図り、 また、 ガ夕ツキがなく円滑に摺動する軽量のポールジョイントァ ッセンプリを提供することを目的とする。  Therefore, an object of the present invention is to solve the above problems, reduce the man-hours and costs involved in manufacturing, and provide a lightweight pole joint assembly that slides smoothly without any looseness. I do.
かかる目的を達成するため、 本発明に係るポールジョイントアッセンプリ は、 軸部の基端側に実質的に球面状の球面部を有するポルトと、 このポルト の球面部に回動自在に嵌合するハゥジングを備えたポールジョイントアツセ ンブリにおいて、 ハウジングを、 ポルトの球面部の周囲にインサート成形し た樹脂製部材から構成するようにした。  In order to achieve the above object, a pole joint assembly according to the present invention includes a port having a substantially spherical spherical portion on a base end side of a shaft portion, and rotatably fitted to the spherical portion of the porto. In a pole joint assembly provided with a housing, the housing is made of a resin member that is insert-molded around a spherical portion of the port.
このように、 ハウジングを樹脂製部材とし、 ポルトの球面部の周囲にイン サ一卜成形することにより、 工数をかけないで簡単に成形することが出来、 また、 インサート成形により、 ハウジングと球面部との間に摺動性は確保さ れるがガ夕ツキは生じない程度の微少なクリアランスが設定出来る。 このた め、 無負荷状態から負荷状態に移行した場合でも、 クリアランスによるガ夕 音等はない。 しかも、 製作費の削減が図られ、 軽量化にも寄与する。  In this way, the housing is made of a resin member and is formed around the spherical portion of the porto by insert molding, so that the molding can be easily performed without any man-hours. The slidability can be secured between the two, but a very small clearance can be set to the extent that no rattling occurs. For this reason, there is no noise due to the clearance even when shifting from the no-load state to the load state. In addition, production costs are reduced, which contributes to weight reduction.
ここで、 ハウジングの樹脂材料は任意であるが、 強度的及び/又は耐磨耗 性等の面から繊維強化樹脂、 例えばガラス繊維を混入した、 ポリアミド、 ポ リアミドイミド、 ポリアセタール等が好ましい。  Here, the resin material of the housing is arbitrary, but from the viewpoint of strength and / or abrasion resistance, a fiber reinforced resin, for example, polyamide, polyamide imide, polyacetal or the like mixed with glass fiber is preferable.
また、 ポルトの素材等も任意であり、 金属製でも樹脂製でも良い。 この際 、 ハウジングと球面部の摺動性を考慮し、 インサート成形前に、 球面部の表 面にヮックスゃ潤滑剤等を塗布したり、 摩擦係数が低くなるような表面処理 を施したりしても良い。  The material of Porto is also arbitrary, and may be metal or resin. At this time, in consideration of the slidability of the housing and the spherical portion, before the insert molding, a surface of the spherical portion is coated with a lubricant such as a wax, or a surface treatment is performed to reduce the friction coefficient. Is also good.
また、 本発明に係る他のポールジョイントアッセンプリは、 前記ポルトの 軸部の中間部に、 ヮッシャがー体的に設けられていることを特徴とするもの である。  Further, another pole joint assembly according to the present invention is characterized in that a washer is provided at an intermediate portion of a shaft portion of the porto.
ここで、 ヮッシャは、 車体等に固定する際に広い接地面積を確保してボル 卜の安定性を高める等の目的で使用されるが、 このようなヮッシャをポルト と一体的に設けておけば、 車体等への取り付け作業の容易化が図られるとと もに、 例えば、 このようなヮッシャをインサート成形前に一体的に設けてお くことにより、 ハウジングをインサート成形した後、 ヮッシャを後バメで取 り付ける必要がなくなり、 例えば後バメ時にヮッシャを嵌め込む際、 ボル卜 とハウジングの球面嵌合部をこじったり、 傷を付けたりする等の不具合を防 止出来る。 Here, the washer is used for the purpose of securing a wide contact area when fixing the vehicle to a vehicle body or the like and improving the stability of a bolt. If it is provided integrally, the work of attaching to the vehicle body etc. is facilitated, and for example, by installing such a washer before insert molding, the housing can be inserted. After molding, it is no longer necessary to attach the washer with a rear screw.This prevents problems such as prying or damaging the spherical fitting part between the bolt and the housing when inserting the washer during the rear screw. I can do it.
このヮッシャの素材等は任意であり、 金属製でも樹脂製でも良い。 またポ ルトにヮッシャを取り付ける時期は任意であり、 ハウジングのインサート成 形前であっても良く、 ハウジングの成形時に、 ハウジング成形用キヤビティ とヮッシャ成形用キヤビティを同時に画成し、 ハウジングとヮッシャを同時 にィンサ一ト成形するようにしても良く、 またィンサ一ト成形の後に装着す るようにしても良い。  The material of the washer is arbitrary, and may be metal or resin. The time for attaching the washer to the port is arbitrary, and may be before the housing is molded. It may be formed by insert molding, or may be mounted after the insert molding.
また本発明に係るボールジョイントアッセンプリの製造方法は、 軸部の基 端部に実質的に球面状の球面部が形成され且つ軸部の中間部にヮッシャが一 体化されるポルトと、 このポルトの球面部に回動自在に嵌合するハウジング、 を備えたポールジョイントアッセンプリを製造する際、 ポルトの軸部の先^ 側を下型に拘束し、 下型上で摺動自在な左右一対のスライド型によりポルト ' の球面部近傍の軸部の周囲を拘束するとともに.、 上型を降下させて球面部の 周囲にハウジング形成用のキヤビティを画成し、 このキヤピティ内に樹脂材 料を充填することによりポルトの球面部の周囲にハウジングを一体的に成形 することを特徴とするものである。  Further, a method of manufacturing a ball joint assembly according to the present invention includes: a port in which a substantially spherical spherical portion is formed at a base end portion of a shaft portion and a washer is integrated in an intermediate portion of the shaft portion; When manufacturing a pole joint assembly that has a housing that is rotatably fitted to the spherical part of Porto, the left and right sides of the port that are slidable on the lower die are restrained by the lower end of the Porto shaft when manufacturing the pole joint assembly. A pair of slide dies constrain the periphery of the shaft near the spherical portion of Porto '. The upper die is lowered to define a cavity for housing formation around the spherical portion, and the resin material is placed in the capity. The housing is integrally formed around the spherical portion of the porto by filling the housing.
すなわち、 インサート成形のため、 ヮッシャが一体化されたポルトを金型 内にセッ卜する場合、 金型の型開閉方向をポルト軸方向と平行にしょうとす ると、 ヮッシャによってアンダーカット部が形成される。 このため、 上型と 下型だけでは、 軸部基端側の球面部の周囲にハウジング成形用のキヤビティ を画成することが困難になる。 そこで、 スライド型を使用してヮッシャ部に 生じるアンダーカツト部を避けてハウジングを成形する。  In other words, when inserting a porter integrated with a washer into a mold for insert molding, if the mold opening and closing direction is set to be parallel to the port axis direction, the undercut is formed by the washer. Is done. For this reason, it is difficult to define a cavity for molding the housing around the spherical portion on the base end side of the shaft using only the upper die and the lower die. Therefore, the housing is formed by using a slide die to avoid the undercut portion generated in the washer portion.
また本発明に係る他のボールジョイントアッセンプリの製造方法は、 前記 の上型に、 ポルトの球面部の上面を下方に押圧する押え部を設け、 また、 前 記のボルトの軸部の先端側が拘束される下型部分には、 付勢部材で支持され て上下に移動可能な入れ子を設けることを特徴としている。 Further, in another method of manufacturing a ball joint assembly according to the present invention, the upper die is provided with a pressing portion for pressing the upper surface of the spherical portion of Porto downward, The lower die portion where the tip end side of the shaft portion of the bolt is restrained is provided with a nest supported vertically by the urging member and capable of moving up and down.
このように上型を下降させる際、 押え部によってボルトを下方に押え付け 、 入れ子を一定の位置まで押し下げるようにすれば、 球面部の位置を常に一 定の位置に位置決めした状態でセットすることが出来、 ハウジングとポル卜 の位置関係を正確にすることが出来る。 図面の簡単な説明  When lowering the upper die in this way, if the bolts are pressed down by the holding part and the nest is pushed down to a certain position, the position of the spherical part is always set at a certain position. And the positional relationship between the housing and the port can be made accurate. BRIEF DESCRIPTION OF THE FIGURES
図 1は、 本発明に係るポ一ルジョイントアセンブリが適用される車両のリ ャドア開閉機構の説明図である。  FIG. 1 is an explanatory diagram of a rear door opening / closing mechanism of a vehicle to which a poll joint assembly according to the present invention is applied.
図 2は、 ポールジョイントアッセンプリの斜視図である。  FIG. 2 is a perspective view of a pole joint assembly.
図 3は、 ボールジョイントアッセンプリの平面図である。  FIG. 3 is a plan view of the ball joint assembly.
図 4は、 図 3の A— A線断面図である。  FIG. 4 is a sectional view taken along line AA of FIG.
図 5は、 ポルトとハウジングが回動した状態の断面図である。  FIG. 5 is a cross-sectional view showing a state where the port and the housing are rotated.
図 6は、 ハウジングのインサート成形を説明する工程図である。  FIG. 6 is a process diagram illustrating insert molding of the housing.
図 7は、 従来のポールジョイントアッセンプリが適用される車両のリャド ァ開閉機構の説明図である。  FIG. 7 is an explanatory diagram of a lid opening / closing mechanism of a vehicle to which a conventional pole joint assembly is applied.
図 8は、 従来のポールジョイントアッセンプリの縦断面図である。 発明を実施するための最良の形態  FIG. 8 is a longitudinal sectional view of a conventional pole joint assembly. BEST MODE FOR CARRYING OUT THE INVENTION
以下に、 図面を参照しつつ、 本発明を詳細に説明する。  Hereinafter, the present invention will be described in detail with reference to the drawings.
本発明に係るポールジョイントアッセンプリの技術は、 例えば図 1に示す ような車両のリヤドァ Dの開閉機構 Q等に適用されるポールジョイントアツ センプリの製造において、 工数やコストの削減を図り、 また、 ガ夕ツキがな く円滑に摺動するようにされるとともに、 軽量化にも配慮されている。 車両のリヤドァ Dの開閉機構 Qは、 図 1に示すように、 基端部が車体 S側 に枢支される伸縮自在な左右一対のロッド 1と、 このロッド 1とリヤドァ D 間に連結されるボールジョイントアッセンプリ 2を備えており、 このボール ジョイントアッセンプリ 2は、 図 2に示すように、 リヤドァ D側に取り付け られるボルト 3と、 ロッド 1の先端部に取り付けられるハウジング 4がー体 的に連結されたものであり、 ポルト 3とハウジング 4はお互いに回動自在に されている。 また、 ボルト 3の中間部には、 ヮッシャ 5がー体的に装着され ている。 The technology of the pole joint assembly according to the present invention is intended to reduce man-hours and costs in manufacturing a pole joint assembly to be applied to, for example, an opening / closing mechanism Q of a rear door D of a vehicle as shown in FIG. It is designed to slide smoothly with no backlash and to reduce weight. The opening / closing mechanism Q of the rear door D of the vehicle is, as shown in FIG. 1, a pair of left and right extensible rods 1 whose base ends are pivotally supported by the vehicle body S, and connected between the rod 1 and the rear door D. The ball joint assembly 2 is installed on the rear door D side as shown in Fig. 2. The bolt 3 and the housing 4 attached to the tip of the rod 1 are physically connected, and the port 3 and the housing 4 are rotatable with respect to each other. In the middle of the bolt 3, a washer 5 is physically mounted.
因みに、 車両に対するポールジョイントアッセンプリ 2の取り付け関係は 、 上記の関係に限定されるものではなく、 上記の関係とは逆、 すなわち、 口 ッド 1の基端部をドア D側に取り付け、 ポールジョイントアッセンプリ 2を 車体 S側に配置するようにすることも可能である。  Incidentally, the mounting relationship of the pole joint assembly 2 to the vehicle is not limited to the above relationship, but is opposite to the above relationship, that is, the base end of the mouth 1 is attached to the door D side, It is also possible to arrange the joint assembly 2 on the vehicle body S side.
前記のポルト 3は、 図 3、 図 4に示すように、 軸部 3 jの基端側に実質的 に球面状の球面部 3 kを備えており、 また、 軸部 3 jの先端側には、 雄ネジ 部 nが形成されている。 そして球面部 3 kの先端面には、 プラスドライバ一 等でボル卜 3を締結するための十字穴 eが形成され （トルクを伝達可能であ れば十字穴に限定されず、 例えば六角穴等他の形状のものであってもよい。 トルク伝達手段としてのプラスドライバーも同様にトルクを伝達できるもの であればそれに限定されない） 、 このようなポルト 3は、 本実施例ではへッ ディングマシン等で圧造した後、 ネジ転造することにより切削加工等の手間 をかけないで作製出来るようにしている。  As shown in FIGS. 3 and 4, the porto 3 has a substantially spherical spherical portion 3k on the base end side of the shaft portion 3j, and has a spherical surface portion 3k on the distal end side of the shaft portion 3j. The male thread portion n is formed. A cross-shaped hole e for fastening the bolt 3 with a Phillips screwdriver or the like is formed at the tip end surface of the spherical portion 3k (the cross-shaped hole is not limited as long as torque can be transmitted. The shape of the port 3 is not limited as long as a plus screwdriver as a torque transmitting means can transmit torque in the same manner.) In this embodiment, such a port 3 is a heading machine or the like. After rolling with screws, it can be manufactured without the need for cutting work by thread rolling.
尚、 このボルト 3は、 金属製のものに限られるものではなく、 繊維強化樹 月旨、 例えばガラス繊維を混入した、 ポリアミド （例えば、 ナイロン 6、 ナイ ロン 6 6、 ナイロン 1 1、 ナイロン 1 2、 モノマーキャスティングナイロン 、 ナイロン M X D 6、 特殊耐熱ポリアミドガラス繊維強化樹脂等） 、 ポリア ミドイミド、 ポリアセタール等の樹脂製にすることも可能である。  The bolts 3 are not limited to those made of metal, but may be made of fiber reinforced wood, for example, glass fiber mixed, polyamide (eg, nylon 6, nylon 66, nylon 11, nylon 12). , Monomer casting nylon, nylon MXD 6, special heat resistant polyamide glass fiber reinforced resin, etc.), polyamide imide, polyacetal, etc.
また、 このボルト 3の軸部 3 jの中間部には、 前述のようにヮッシャ 5が 抜脱不能に装着されている。 このヮッシャ 5は、 ポルト 3をドア D等に取り 付ける際、 広い接地面積を確保してボルト 3を安定した状態で固定出来るよ うにするためのものであり、 このようなヮッシャ 5は、 後述する要領でハウ ジング 4をインサート成形する前の段階から装着しても良く、 また、 インサ 一卜成形の後の段階で装着するようにしても良い。 そして、 素材を金属製に する場合は、 焼き嵌め等により装着することが可能であり、 樹脂製にする場 合はィンサート成形等により装着することが可能である。 In addition, as described above, the washer 5 is attached to the intermediate portion of the shaft portion 3j of the bolt 3 so that it cannot be removed. The washer 5 is used to secure a large grounding area so that the bolt 3 can be fixed in a stable state when the port 3 is attached to the door D or the like, and such a washer 5 will be described later. The housing 4 may be mounted from the stage before the insert molding in a manner similar to the above, or may be mounted at a stage after the insert molding. If the material is made of metal, it can be attached by shrink fitting, etc. In this case, it can be mounted by insert molding or the like.
前記ハウジング 4は、 繊維強化樹脂 （具体的には前記樹脂が使用し得る） 等の樹脂製部材から構成され、 ポルト 3の球面部 3 kの周囲にインサート成 形により一体化されている。  The housing 4 is made of a resin member such as a fiber reinforced resin (specifically, the resin can be used), and is integrated around the spherical portion 3 k of the port 3 by insert molding.
このため、 インサート成形によってハウジング 4に形成される実質的に球 面状の球面凹部 4 dと、 ポルト 3の球面部 3 kとの間には、 摺動が許容され る程度の微少なクリアランスを設定することが出来、 この場合にはガ夕ツキ が生じないため、 例えば図 5に示すようにポル卜 3とハウジング 4を相対回 動させた場合、 ガタツキのない円滑な回動が可能となる。 また、 開閉時に無 負荷状態から負荷状態に移行した場合でも、 クリアランスによるガタ音等が ない。  For this reason, a small clearance that allows sliding is provided between the substantially spherical spherical concave portion 4 d formed in the housing 4 by insert molding and the spherical portion 3 k of the port 3. In this case, rattling does not occur.For example, when the port 3 and the housing 4 are relatively rotated as shown in FIG. 5, smooth rotation without rattling is possible. . Also, there is no rattling due to the clearance, even when switching from a no-load state to a load state during opening and closing.
更に、 ハウジング 4を樹脂製部材にしていることから、 ポールジョイント アッセンブリ 2の軽量化が図られる。  Further, since the housing 4 is made of a resin member, the weight of the pole joint assembly 2 can be reduced.
ここで、 インサート成形の一例について、 図 6に基づき説明すると、 まず 、 図 6 ( a ) に示すように、 ヮッシャ 5付きポルト 3の軸部 3 jの先端側を 下型 1 0に拘束する。 この際、 下型 1 0には、 付勢部材としてのバネ 1 1に よって支持される入れ子 1 2が上下動可能に配設されており、 この入れ子 1 2に形成される保持孔 1 2 hにポルト 3の軸部 3 jの先端側を挿入し、 ヮッ シャ 5の下面を入れ子 1 2の上面に当接させる。  Here, an example of the insert molding will be described with reference to FIG. 6. First, as shown in FIG. 6 (a), the tip end side of the shaft portion 3j of the port 3 with the washer 5 is constrained to the lower mold 10. At this time, the lower mold 10 is provided with a nest 12 supported by a spring 11 as an urging member so as to be able to move up and down, and a holding hole 1 2h formed in the nest 12 is provided. Insert the tip side of the shaft 3 j of the port 3 into the port, and bring the lower surface of the washer 5 into contact with the upper surface of the nest 12.
次いで、 図 6 ( b ) に示すように、 下型 1 0上で摺動自在な左右一対のス ライド型 1 3を前進させて球面部 3 k近傍の軸部 3 jの周囲を拘束する。 そ してこのようにスライド型 1 3を使用することにより、 ヮッシャ 5によって 生じるアンダーカットを避けるようにする。 また、 これと同時に上型 1 4と 押え部としての押えピン 1 5を下降させるが、 スライド型 1 3が閉じる時点 では上型 1 4は閉まらず、 また押えピン 1 5は球面部 3 kの上面に当接して いない。  Next, as shown in FIG. 6 (b), a pair of left and right slide molds 13 slidable on the lower mold 10 are advanced to restrain the periphery of the shaft portion 3j near the spherical portion 3k. By using the slide mold 13 in this way, the undercut caused by the washer 5 is avoided. At the same time, the upper die 14 and the presser pin 15 as the presser are lowered, but when the slide die 13 is closed, the upper die 14 does not close, and the presser pin 15 is Not in contact with top surface.
次いで、 図 6 ( c ) に示すように、 押えピン 1 5がポルト 3の球面部 3 k 上面を押圧し、 入れ子 1 2は下方のパネ 1 1を押し縮めながら下がり、 また 上型 1 4がスライド型 1 3の上面に当接してハウジング成形用キヤビティ C が画成される。 この際、 押えピン 1 5によりポルト 3を押え付けることによ り、 球面部 3 kの位置が常に一定となり、 球面部 3 kの周囲に画成されるキ ャビティ Cの位置を正確に設定することが出来る。 Next, as shown in FIG. 6 (c), the presser pin 15 presses the upper surface of the spherical portion 3k of the port 3, the nest 12 lowers while compressing and shrinking the lower panel 11, and the upper die 14 is moved downward. Cavity C for housing molding in contact with the upper surface of slide mold 13 Is defined. At this time, the position of the spherical portion 3 k is always fixed by pressing the port 3 with the holding pin 15, and the position of the cavity C defined around the spherical portion 3 k is accurately set. I can do it.
そして、 このキヤビティ C内にハウジング成形用の樹脂材料を充填してハ ウジング 4を成形すると、 球面部 3 kと球面凹部 4 dとの間に、 摺動を許容 する程度の微少なクリアランスが設定されたハウジング 4が成形される （ィ ンサ一ト成形直後の球面部 3 kと球面凹部 4 dとは密着した状態にあるが、 例えば球面部 3 kの軸線を傾けた状態にすることによってその密着状態は簡 単に解除し得る） 。  Then, when the housing C is filled with a resin material for housing molding in the cavity C, a small clearance is set between the spherical portion 3 k and the spherical concave portion 4 d to allow sliding. (The spherical portion 3k immediately after the insert molding and the spherical concave portion 4d are in close contact with each other, for example, by tilting the axis of the spherical portion 3k to form the housing 4). The close contact state can be easily released).
尚、 以上のような成形方法において、 例えばハウジング 4用の樹脂材料が 球面部 3 kに付着しやすい材料である場合等には、 インサート成形前に、 必 要に応じてポルト 3の球面部 3 kの表面に、 潤滑剤やワックス等を塗布した り、 摩擦係数が低くなるような表面処理を施すようにしても良い。  In the above molding method, for example, if the resin material for the housing 4 is a material that easily adheres to the spherical portion 3k, etc., before the insert molding, the spherical portion 3 The surface of k may be coated with a lubricant, wax, or the like, or may be subjected to a surface treatment that reduces the friction coefficient.
また、 以上の実施例では、 ポルト 3にヮッシャ 4を取り付けたものを金型 にインサートするようにしているが、 ポルト 3単体をインサートとし、 金型 によってヮッシャ成形用キヤビティとハウジング成形用キヤビティを同時に 画成し、 それぞれめキヤビティに樹脂材料を充填して、 ハウジング 4とヮッ シャ 5を同時にインサート成形するようにしても良い。  Further, in the above embodiment, the porter 3 with the washer 4 attached is inserted into the mold.However, the porto 3 alone is used as an insert, and the cavities for forming the pusher and the housing are simultaneously formed by the mold. The housing 4 and the washer 5 may be insert-molded at the same time by filling the cavity with a resin material.
更に、 以上のポールジョイントアセンブリ 2は、 車両のリヤドァ Dの開閉 機構 Qに適用する例を示したが、 リヤドァ Dに限られるものではなく、 例え ば車両用のボンネットやその他の開閉部等でも良い。  Furthermore, although the pole joint assembly 2 described above has been applied to the opening / closing mechanism Q of the rear door D of the vehicle, the present invention is not limited to the rear door D, but may be, for example, a vehicle hood or other opening / closing parts. .
そして上記のような製造方法を採用することにより、 極めて簡単に製造す ることが出来、 コストダウン化が図れる。 産業上の利用可能性  And by adopting the above-mentioned manufacturing method, it is possible to extremely easily manufacture and reduce the cost. Industrial applicability
上記の通り、 本発明に係るポールジョイントアッセンプリは、 ボルトの球 面部の周囲に樹脂製部材からなるハウジングを一体成形するようにしたため 、 製造にかかる工数やコストの削減を図り、 また、 'ガ夕ツキがなく円滑に摺 動する軽量のポールジョイントアッセンプリを成形することができる。  As described above, in the pole joint assembly according to the present invention, since a housing made of a resin member is integrally formed around the spherical surface of the bolt, the man-hour and cost for manufacturing are reduced. A light pole joint assembly that slides smoothly without sunsets can be molded.

Claims

請 求 の 範 囲 The scope of the claims
1 . 軸部の基端側に実質的に球面状の球面部を有するポルトと、 このポル 卜の球面部に回動自在に嵌合するハウジングを備えたポールジョイントアツ センプリであって、 該ハウジングが、 該ポルトの球面部の周囲にインサート 成形された樹脂製部材であることを特徴とするポールジョイントアッセンブ 1. A pole joint having a port having a substantially spherical spherical portion on the base end side of a shaft portion and a housing rotatably fitted to the spherical portion of the port, the housing comprising: Is a resin member that is insert-molded around the spherical portion of the porto,
2 . 前記のポルトの軸部の.中間部に、 ヮッシャがー体的に設けられている 、 請求の範囲第 1項に 己載のボールジョイントアッセンプリ。 2. The ball joint assembly according to claim 1, wherein a washer is provided at an intermediate portion of the port portion of the porto.
3 . 軸部の基端側に実質的に球面状の球面部が形成され、 且つ軸部の中間 部にヮッシャがー体的に設けられているボルトと、 このポルトの球面部に回 動自在に嵌合するハウジングを備えたポールジョイントアッセンプリを製造 する方法であって、 該ポルトの軸部の先端側を下型に拘束する工程と、 下型 上で摺動自在な左右一対のスライド型によりボルトの球面部近傍の軸部の周 囲を拘束する工程と、 上型を降下させて球面部の周囲にハウジング形成用の キヤビティを画成する工程と、 このキヤビティ内に樹脂材料を充填すること によりポルトの球面部の周囲にハウジングを一体的にィンサート成形するェ 程からなるポールジョイントアッセンプリの製造方法。 3. A substantially spherical spherical portion is formed on the base end side of the shaft portion, and a bolt provided with a washer in the middle portion of the shaft portion, and is rotatable on the spherical portion of the porto. A method of manufacturing a pole joint assembly having a housing that fits into a lower mold, comprising: a step of restraining a distal end side of a shaft portion of the port with a lower mold; Restraining the circumference of the shaft near the spherical surface of the bolt, lowering the upper die to define a cavity for housing formation around the spherical surface, and filling the cavity with a resin material. Accordingly, a method of manufacturing a pole joint assembly comprising a step of integrally insert-molding a housing around a spherical portion of Porto.
4 . 前記の上型に、 ボルトの球面部の上面を下方に押圧する押え部が設け られ、 また、 前記のポルトの軸部の先端側が拘束される下型部分には、 付勢 部材で支持されて上下に移動可能な入れ子が設けられている、 請求の範囲第 3項に記載のポールジョイントアッセンプリの製造方法。 4. The upper die is provided with a pressing portion for pressing the upper surface of the spherical portion of the bolt downward, and the lower die portion where the tip side of the shaft portion of the port is restrained is supported by an urging member. 4. The method for manufacturing a pole joint assembly according to claim 3, wherein a nest that can be moved up and down is provided.
PCT/JP2001/007604 2001-09-03 2001-09-03 Ball joint assembly and method for manufacturing the same WO2003021117A1 (en)

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PCT/JP2001/007604 WO2003021117A1 (en) 2001-09-03 2001-09-03 Ball joint assembly and method for manufacturing the same

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WO (1) WO2003021117A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5716245B2 (en) * 1974-08-28 1982-04-03
JPS6386420U (en) * 1986-11-25 1988-06-06
WO1996037710A1 (en) * 1995-05-22 1996-11-28 Avm, Inc. Connector with insert molded captive ball
US5947627A (en) * 1996-02-14 1999-09-07 Chuouhatsu-Jo Kabushiki Kaisha Ball joint assembly having an integrally molded unitary or molded holder for the ball stud and link rod

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5716245B2 (en) * 1974-08-28 1982-04-03
JPS6386420U (en) * 1986-11-25 1988-06-06
WO1996037710A1 (en) * 1995-05-22 1996-11-28 Avm, Inc. Connector with insert molded captive ball
US5947627A (en) * 1996-02-14 1999-09-07 Chuouhatsu-Jo Kabushiki Kaisha Ball joint assembly having an integrally molded unitary or molded holder for the ball stud and link rod

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