JP2011185381A - Connecting structure for shaft member and receiving member - Google Patents

Connecting structure for shaft member and receiving member Download PDF

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Publication number
JP2011185381A
JP2011185381A JP2010052619A JP2010052619A JP2011185381A JP 2011185381 A JP2011185381 A JP 2011185381A JP 2010052619 A JP2010052619 A JP 2010052619A JP 2010052619 A JP2010052619 A JP 2010052619A JP 2011185381 A JP2011185381 A JP 2011185381A
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Prior art keywords
shaft
hole
serration
receiving member
yoke
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JP2010052619A
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Japanese (ja)
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Tomohiro Seki
友宏 関
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Suzuki Motor Corp
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Suzuki Motor Corp
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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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F16D3/382—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another constructional details of other than the intermediate member
    • F16D3/387—Fork construction; Mounting of fork on shaft; Adapting shaft for mounting of fork
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/0852—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft
    • F16D1/0864—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft due to tangential loading of the hub, e.g. a split hub
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D1/108—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
    • F16D1/116—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling the interengaging parts including a continuous or interrupted circumferential groove in the surface of one of the coupling parts
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D2001/103—Quick-acting couplings in which the parts are connected by simply bringing them together axially the torque is transmitted via splined connections

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Steering Controls (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide connecting structure for a shaft member and a receiving member sufficiently securing fitting length between the shaft member and the receiving member without increase in axial length or weight, and to prevent insufficient insertion of the shaft member into the receiving member in assembly. <P>SOLUTION: In the connecting structure, an end of a pinion shaft (shaft member) 1 is inserted and fitted into a hole formed in a yoke (receiving member) 4, and a bolt 8 inserted into bolt holes 9, 10 formed in the yoke 4 is fastened to fasten and fix the pinion shaft 1 to the yoke 4. In the pinion shaft 1, a first shaft part 1A formed with serration, a recess part 1a, a second shaft part 1B of which the teeth are thicker than those of serration of the first shaft part 1A are sequentially arranged from a tip side in an insertion direction, and a hole of the yoke 4 has a first hole part 4A and a second hole part 4B each having a serration hole in which the serration of each of the first shaft part 1A and a second shaft part 1B of the pinion shaft 1 is fitted. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、受け部材に形成された孔に軸部材の端部を挿入嵌合して固定することによって両者を連結する連結構造に関するものである。   The present invention relates to a connection structure that connects both ends by inserting and fixing an end portion of a shaft member in a hole formed in a receiving member.

例えば、車両を操舵するためのステアリング装置は、ドライバによって操作されるステアリングホイールの回転をステアリングシャフトを介してステアリングギヤボックス内のギヤに伝達することによって車輪を転舵するものである。ここで、ステアリングハンドルは車室内に配置され、ステアリングギヤボックスはエンジンルーム内に配置されているため、車室とエンジンルームとを区画するダッシュパネル付近においてステアリングシャフトとステアリングギヤボックスのピニオンシャフトとを連結して操舵力を伝達する必要がある。   For example, a steering device for steering a vehicle steers wheels by transmitting rotation of a steering wheel operated by a driver to a gear in a steering gear box via a steering shaft. Here, since the steering handle is disposed in the vehicle interior and the steering gear box is disposed in the engine compartment, the steering shaft and the pinion shaft of the steering gear box are disposed near the dash panel that partitions the compartment and the engine compartment. It is necessary to connect and transmit steering force.

ところで、ステアリングシャフトとピニオンシャフトとの連結は、ステアリングシャフトの端部に設けられたユニバーサルジョイント（カルダンジョイント）部分にて行われる。詳細には、両者の連結は、セレーションが形成されたピニオンシャフトの先端部（セレーション軸）をダッシュパネルを貫通して車室内に突出させ、このセレーション軸をユニバーサルジョイントのヨークのセレーションが形成された孔（セレーション孔）に挿入することによってなされ、ステアリングシャフトとピニオンシャフトはセレーションによって嵌合するため、ステアリングシャフトからピニオンシャフトへと回転力（操舵力）が確実に伝達される。   By the way, the connection between the steering shaft and the pinion shaft is performed at a universal joint (cardan joint) provided at the end of the steering shaft. Specifically, in the connection between the two, the tip of the pinion shaft on which the serration was formed (the serration shaft) penetrates the dash panel and protrudes into the vehicle interior, and the serration of the universal joint yoke is formed on the serration shaft. Since the steering shaft and the pinion shaft are engaged by serration, the rotational force (steering force) is reliably transmitted from the steering shaft to the pinion shaft.

上記連結構造においては、ユニバーサルジョイントのヨークにはスリットがセレーション孔の開口端縁から軸方向に沿って形成されており、このスリットの両側にはボルト用孔がスリットに対して垂直方向に貫設されている。又、ピニオンシャフトの先端部外周には凹部が形成されている。そして、このピニオンシャフトの先端部をユニバーサルジョイントのヨークに形成されたセレーション孔に挿入し、ヨークに形成されたボルト用孔にボルトを通して該ボルトを締め付ければ、ヨークのスリットの幅が狭くなってピニオンシャフトのセレーション軸がヨークのセレーション孔によって締め付けられ、ピニオンシャフトとヨークとが確実に連結される。更に、ボルトがピニオンシャフトの凹部内に配置されることによってヨークのピニオンシャフトからの抜けが防がれる。   In the connecting structure, a slit is formed in the yoke of the universal joint along the axial direction from the opening edge of the serration hole, and bolt holes are provided on both sides of the slit in a direction perpendicular to the slit. Has been. A recess is formed on the outer periphery of the tip of the pinion shaft. Then, if the tip of the pinion shaft is inserted into a serration hole formed in the yoke of the universal joint, and the bolt is tightened through the bolt hole formed in the yoke, the width of the slit in the yoke becomes narrower. The serration shaft of the pinion shaft is tightened by the serration hole of the yoke, so that the pinion shaft and the yoke are securely connected. Further, the bolt is disposed in the recess of the pinion shaft, thereby preventing the yoke from coming off from the pinion shaft.

しかしながら、ピニオンシャフトとユニバーサルジョイントのヨークとの連結場所を車室とした場合には、その場所は車室内の乗員の足元となる狭い空間となり、連結場所をエンジンルーム内とした場合には、その場所はステアリングギヤボックスやサスペンション部品が近くに配置されている場所であるため、共に十分な作業空間が確保されず、連結の作業性が著しく悪く、連結の確認が困難であるという問題があった。   However, when the connection location between the pinion shaft and the universal joint yoke is a vehicle compartment, the location is a narrow space that is a foot of the passenger in the vehicle interior. Since the place is a place where the steering gear box and suspension parts are located nearby, there is a problem that sufficient work space is not secured, the connection workability is remarkably deteriorated, and it is difficult to check the connection. .

ところで、ヨークのボルト用孔に通されたボルトを締め付ける前の状態では、セレーションによって嵌合するヨークとピニオンシャフトが軸方向に相対移動可能であるために両者が抜け易い。ピニオンシャフトとヨークの間に軸方向の位置ズレ（抜け気味の不完全な挿入状態）がある場合には、ボルトとピニオンシャフトの凹部の位置が合わないためにボルトがヨークのボルト用孔に入らず、該ボルトを締め付けることができないめ、ピニオンシャフトとヨークの挿入不足を組付作業者が容易に発見することができて修正が可能であった。   By the way, in a state before the bolt passed through the bolt hole of the yoke is tightened, the yoke and the pinion shaft that are fitted by serration are relatively movable in the axial direction, so that both are easy to come off. If there is an axial misalignment between the pinion shaft and the yoke (an incomplete insertion state), the bolt does not fit into the recess of the pinion shaft and the bolt enters the bolt hole in the yoke. Therefore, the bolt cannot be tightened, and the assembly operator can easily find the insufficient insertion of the pinion shaft and the yoke, and correction is possible.

ところが、ヨークのセレーション孔にピニオンシャフトのセレーション軸の先端しか挿入されていない状態では、セレーション軸とボルトの干渉が発生せず、ボルトをヨークのボルト用孔に通すことができるため、該ボルトを締め付けることができてしまう。このため、組付作業者がピニオンシャフトの挿入不足を認識することができない場合がある。この場合、回転力（操舵力）を伝達するの長さが不足するとともに、ボルトとセレーション軸の凹部とが係合していないためにヨークの抜け止め効果を得ることができないという問題があった。   However, when only the tip of the serration shaft of the pinion shaft is inserted into the serration hole of the yoke, there is no interference between the serration shaft and the bolt, and the bolt can be passed through the bolt bolt hole. It can be tightened. For this reason, the assembly operator may not be able to recognize the insufficient insertion of the pinion shaft. In this case, there is a problem that the length for transmitting the rotational force (steering force) is insufficient and the effect of preventing the yoke from being removed cannot be obtained because the bolt and the recess of the serration shaft are not engaged. .

上記問題を解決するため、特許文献１には、セレーション孔の開口部付近にセレーションを形成せず、ボルトによる締め付けが可能であっても挿入不足が発生している場合には、セレーション孔とセレーション軸とが噛み合わないようにした構成が提案されている。   In order to solve the above-described problem, Patent Document 1 discloses that a serration hole and a serration are not formed in the case where insufficient insertion occurs even if tightening with a bolt is possible without forming serrations near the opening of the serration hole. A configuration has been proposed in which the shaft does not mesh.

又、特許文献２には、セレーション軸（ピニオン軸）の先端にセレーションが形成されていない突部を設け、ボルトによる締め付けが可能であっても挿入不足が発生している場合には、ボルトが突部に干渉し、セレーション孔とセレーション軸とが噛み合わないようにした構成が提案されている。   Further, in Patent Document 2, a protrusion having no serration is provided at the tip of a serration shaft (pinion shaft). A configuration has been proposed in which the serration hole and the serration shaft do not mesh with each other due to interference with the protrusion.

実公昭６０−０４０３８４号公報Japanese Utility Model Publication No. 60-040384 特開昭６１−０５２４２１号公報JP 61-052421 A

しかしながら、特許文献１，２において提案された構成では、セレーションが形成されていない部分が存在するため、その長さ分だけセレーションの噛み合い長さが短くなったり、組付時以外には不要な駄肉が必要となるために重量増加等の問題が発生する。セレーションに必要な噛み合い長さを確保するためには、部品の軸方向長さを長くする必要があり、部品の大型化や重量増加を招くという問題が発生する。   However, in the configurations proposed in Patent Documents 1 and 2, there is a portion where serrations are not formed, so that the meshing length of serrations is shortened by that length, or unnecessary waste other than during assembly. Since meat is required, problems such as weight increase occur. In order to secure the meshing length necessary for serration, it is necessary to increase the axial length of the component, which causes a problem of increasing the size and weight of the component.

本発明は上記問題に鑑みてなされたもので、その目的とする処は、軸方向長さや重量増加を招くことなく軸部材と受け部材との嵌合長さを十分確保することができるとともに、軸部材と受け部材の挿入不足での組み付けを防ぐことができる軸部材と受け部材との連結構造を提供することにある。   The present invention has been made in view of the above problems, and the intended process is to ensure a sufficient fitting length between the shaft member and the receiving member without incurring an increase in axial length or weight, An object of the present invention is to provide a connecting structure between a shaft member and a receiving member that can prevent assembly due to insufficient insertion of the shaft member and the receiving member.

上記目的を達成するため、請求項１記載の発明は、受け部材に形成された孔に軸部材の端部を挿入嵌合し、前記受け部材に形成されたボルト用孔に挿通するボルトを締め付けることによって前記軸部材を受け部材に締付固定するとともに、前記ボルトを軸部材の端部外周に形成された凹部に係合させて受け部材の軸部材からの抜けを防ぐようにした軸部材と受け部材との連結構造において、
前記軸部材に、セレーションが形成された第１軸部、前記凹部、前記第１軸部のセレーションよりも歯厚の厚いセレーションが形成された第２軸部を挿入方向先端側から順次配置するとともに、
前記受け部材の孔に、前記軸部材の第１軸部と第２軸部の各セレーションがそれぞれ嵌合するセレーション孔が形成された第１孔部と第２孔部を形成したことを特徴とする。 In order to achieve the above object, according to the first aspect of the present invention, the end portion of the shaft member is inserted and fitted into the hole formed in the receiving member, and the bolt inserted into the bolt hole formed in the receiving member is tightened. The shaft member is fastened and fixed to the receiving member, and the bolt is engaged with a recess formed on the outer periphery of the end of the shaft member to prevent the receiving member from coming off from the shaft member; In the connection structure with the receiving member,
In the shaft member, the first shaft portion on which the serration is formed, the concave portion, and the second shaft portion on which the serration having a thicker tooth thickness than the serration of the first shaft portion is sequentially arranged from the distal end side in the insertion direction. ,
In the hole of the receiving member, a first hole portion and a second hole portion are formed in which serration holes into which the serrations of the first shaft portion and the second shaft portion of the shaft member are respectively fitted are formed. To do.

請求項２記載の発明は、請求項１記載の発明において、前記軸部材の第１軸部と第２軸部にそれぞれ形成されたセレーションの歯数及び前記受け部材の第１孔部と第２孔部にそれぞれ形成されたセレーション孔の歯溝の数を全て同数としたことを特徴とする。   According to a second aspect of the present invention, in the first aspect of the invention, the number of serration teeth formed on the first shaft portion and the second shaft portion of the shaft member and the first hole portion and the second of the receiving member, respectively. The number of tooth spaces of the serration holes respectively formed in the hole portions is the same.

請求項３記載の発明は、請求項１又は２記載の発明において、互いに嵌合する前記軸部材の第１軸部のセレーションの歯厚と前記受け部材の第１孔部のセレーション孔の歯溝の幅及び前記軸部材の第２軸部のセレーションの歯厚と前記受け部材の第２孔部のセレーション孔の歯溝の幅を略同一に設定したことを特徴とする。   The invention according to claim 3 is the invention according to claim 1 or 2, wherein the tooth thickness of the serration of the first shaft portion of the shaft member and the tooth groove of the serration hole of the first hole portion of the receiving member are mutually fitted. And the tooth thickness of the serration of the second shaft portion of the shaft member and the width of the tooth groove of the serration hole of the second hole portion of the receiving member are set to be substantially the same.

請求項４記載の発明は、請求項１〜３の何れかに記載の発明において、前記軸部材は、車両のステアリングボックスから車室内に突出するピニオンシャフトであり、前記受け部材は、ステアリングシャフトの端部に結着されたジョイントのヨークであることを特徴とする。   The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the shaft member is a pinion shaft that protrudes from a steering box of a vehicle into a vehicle interior, and the receiving member is a steering shaft. It is the yoke of the joint bound to the end part.

請求項１記載の発明によれば、軸部材の受け部材への挿入が不完全であって、軸部材の第１軸部が受け部材の第２孔部までしか挿入されていない状態では、ボルトを受け部材のボルト用孔に通すことができても、歯厚の薄いセレーションが形成された第１軸部と歯溝の広いセレーション孔が形成された第２孔部との嵌合には周方向のガタが発生するため、組付作業者は軸部材の受け部材への挿入が不完全であることを容易に発見することができる。又、軸部材の第１軸部と第２軸部が受け部材の第１孔部と第２孔部にそれぞれ嵌合していても、これらの嵌合が不完全である場合には、ボルトを受け部材のボルト用孔に通すことができないため、組付作業者は軸部材の受け部材への挿入が不完全であることを容易に発見することができる。   According to the first aspect of the present invention, in a state where the insertion of the shaft member into the receiving member is incomplete and the first shaft portion of the shaft member is inserted only up to the second hole of the receiving member, the bolt Even if it can be passed through the bolt hole of the receiving member, the first shaft portion with a thin serration and the second hole portion with a wide serration hole are not suitable for fitting. Since the play of the direction is generated, the assembling operator can easily find out that the insertion of the shaft member into the receiving member is incomplete. If the first shaft portion and the second shaft portion of the shaft member are fitted in the first hole portion and the second hole portion of the receiving member, respectively, but the fitting is incomplete, the bolt Since it cannot pass through the bolt hole of the receiving member, the assembling operator can easily find out that the insertion of the shaft member into the receiving member is incomplete.

そして、軸部材の受け部材への挿入が完全である場合には、軸部材が受け部材に対して回転不能となるとともに、ボルトを受け部材のボルト用孔に通すことができるため、軸部材と受け部材とが確実に連結されて回転力の伝達が可能となるとともに、受け部材の軸部材からの抜けが確実に防がれる。この場合、軸部材の第１軸部と第２軸部及び受け部材の第１孔部と第２孔部はそれぞれその全長部分が嵌合（回転力の伝達が可能な嵌合）に寄与して無駄な部分が存在しないため、軸方向長さや重量増加を招くことなく軸部材と受け部材との嵌合長さを十分確保することができる。   When the insertion of the shaft member into the receiving member is complete, the shaft member becomes non-rotatable with respect to the receiving member and the bolt can be passed through the bolt hole of the receiving member. The receiving member is securely connected to transmit rotational force, and the receiving member is reliably prevented from coming off the shaft member. In this case, the first shaft portion and the second shaft portion of the shaft member and the first hole portion and the second hole portion of the receiving member respectively contribute to the fitting (fitting capable of transmitting a rotational force). In addition, since there is no useless portion, it is possible to sufficiently secure the fitting length between the shaft member and the receiving member without causing an increase in the axial length or weight.

請求項２記載の発明によれば、軸部材の第１軸部と第２軸部にそれぞれ形成されたセレーションの歯数及び受け部材の第１孔部と第２孔部にそれぞれ形成されたセレーション孔の歯溝の数を全て同数としたため、セレーションをそれぞれ形成するとともに、各セレーションの歯数を全て同じにしたため、軸部材と受け部材とは当該セレーションの歯数分の相対角度で組み付けることが可能となり、ステアリングホイールの向きが良好となる回転角度位置を選択して容易にセレーション嵌合によって連結される。   According to invention of Claim 2, the number of teeth of the serration formed in the 1st axial part and 2nd axial part of a shaft member, respectively, and the serration formed in the 1st hole part and 2nd hole part of a receiving member, respectively Since the number of tooth gaps in the holes is the same, serrations are formed, and since the number of teeth in each serration is the same, the shaft member and the receiving member can be assembled at a relative angle corresponding to the number of teeth of the serration. It is possible to select the rotation angle position at which the steering wheel has a good orientation and easily connect by serration fitting.

又、軸部材の第１軸部には歯厚の薄いセレーションが形成され、受け部材の第２孔部には歯溝の幅が大きなセレーション孔が形成されているため、軸部材と受け部材の挿入初期の両者の嵌合が容易になされる。   In addition, the first shaft portion of the shaft member is formed with a serration having a small tooth thickness, and the second hole portion of the receiving member is formed with a serration hole having a large tooth groove width. The two can be easily fitted in the initial stage of insertion.

請求項３記載の発明によれば、互いに嵌合する軸部材の第１軸部のセレーションの歯厚と受け部材の第１孔部のセレーション孔の歯溝の幅及び軸部材の第２軸部のセレーションの歯厚と受け部材の第２孔部のセレーション孔の歯溝の幅を略同一に設定したため、軸部材と受け部材とのセレーションによる嵌合がガタ無く緊密になされ、何れの回転方向においても確実な回転力の伝達が可能となる。又、全てのセレレーションの歯と歯溝を回転力の伝達に寄与させることができるため、セレーションの長さを最小限に抑えて軸部材と受け部材との連結構造を小型化することができる。   According to invention of Claim 3, the tooth thickness of the serration of the 1st axial part of the shaft member which mutually fits, the width of the tooth groove of the serration hole of the 1st hole part of a receiving member, and the 2nd axial part of an axial member Since the tooth thickness of the serration and the width of the serration hole of the serration hole of the second hole of the receiving member are set to be substantially the same, the fitting between the shaft member and the receiving member is made tight without looseness, and any rotation direction In this case, it is possible to reliably transmit the rotational force. Further, since all the teeth and tooth spaces of the serration can contribute to the transmission of the rotational force, the connecting structure between the shaft member and the receiving member can be miniaturized while minimizing the length of the serration. .

請求項４記載の発明によれば、ステアリングシャフトとピニオンシャフトとの連結は、狭い作業空間しか確保することができない作業となり、又、両者の連結箇所は、車両完成後の確認作業が難しい場所であるが、ステアリングシャフトとピニオンシャフトとの連結が不完全であることが容易に発見されるため、確実な連結作業が可能となる。   According to the fourth aspect of the present invention, the connection between the steering shaft and the pinion shaft is an operation that can ensure only a narrow work space, and the connection point between the two is a place where it is difficult to confirm the vehicle after completion of the vehicle. However, since it is easily found that the connection between the steering shaft and the pinion shaft is incomplete, a reliable connection operation is possible.

車両のステアリングシャフトとピニオンシャフトとの連結部の側面図である。It is a side view of the connection part of the steering shaft and pinion shaft of a vehicle. 本発明に係る連結構造を示す車両のピニオンシャフトとユニバーサルジョイントのヨークの斜視図である。It is a perspective view of the pinion shaft of the vehicle which shows the connection structure concerning this invention, and the yoke of a universal joint. （ａ）は本発明に係る連結構造の完全な連結状態を示す車両のピニオンシャフトとユニバーサルジョイントのヨークの側面図、（ｂ）は（ａ）のＡ−Ａ線断面図、（ｃ）は（ｂ）のＢ−Ｂ線断面図、（ｄ）は（ｂ）のＣ−Ｃ線断面図である。(A) is a side view of a vehicle pinion shaft and a universal joint yoke showing a completely connected state of the connecting structure according to the present invention, (b) is a cross-sectional view taken along line AA in (a), and (c) is ( FIG. 4B is a sectional view taken along line B-B in FIG. 5B, and FIG. 4D is a sectional view taken along line CC in FIG. （ａ）は本発明に係る連結構造の不完全な連結状態を示す車両のピニオンシャフトとユニバーサルジョイントのヨークの側面図、（ｂ）は（ａ）のＤ−Ｄ線断面図、（ｃ）は（ｂ）のＥ−Ｅ線断面図である。(A) is a side view of a vehicle pinion shaft and a universal joint yoke showing an incompletely connected state of the connecting structure according to the present invention, (b) is a sectional view taken along line DD of (a), and (c) is It is EE sectional view taken on the line of (b). （ａ）は本発明に係る連結構造の不完全な連結状態を示す車両のピニオンシャフトとユニバーサルジョイントのヨークの側面図、（ｂ）は（ａ）のＦ−Ｆ線断面図である。(A) is a side view of the pinion shaft of the vehicle and the yoke of the universal joint showing the incompletely connected state of the connecting structure according to the present invention, and (b) is a sectional view taken along line FF of (a).

以下に本発明の実施の形態を添付図面に基づいて説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図１は車両のステアリングシャフトとピニオンシャフトとの連結部の側面図、図２は本発明に係る連結構造を示すピニオンシャフトとユニバーサルジョイントのヨークの斜視図、図３（ａ）は本発明に係る連結構造によるピニオンシャフトとヨークの完全な連結状態を示す図であって、（ａ）は側面図、（ｂ）は（ａ）のＡ−Ａ線断面図、（ｃ）は（ｂ）のＢ−Ｂ線断面図、（ｄ）は（ｂ）のＣ−Ｃ線断面図、図４は同連結構造におけるピニオンシャフトとヨークの不完全な連結状態を示す図であって、（ａ）は側面図、（ｂ）は（ａ）のＤ−Ｄ線断面図、（ｃ）は（ｂ）のＥ−Ｅ線断面図、図５は同連結構造におけるピニオンシャフトとヨークの不完全な連結状態を示す図であって、（ａ）は側面図、（ｂ）は（ａ）のＦ−Ｆ線断面図である。   FIG. 1 is a side view of a connection portion between a steering shaft and a pinion shaft of a vehicle, FIG. 2 is a perspective view of a pinion shaft and a universal joint yoke showing a connection structure according to the present invention, and FIG. It is a figure which shows the complete connection state of the pinion shaft by a connection structure, and a yoke, Comprising: (a) is a side view, (b) is the sectional view on the AA line of (a), (c) is B of (b). FIG. 4B is a sectional view taken along the line CC of FIG. 4B, FIG. 4 is a diagram showing an incompletely connected state of the pinion shaft and the yoke in the connection structure, and FIG. (B) is a cross-sectional view taken along line DD of (a), (c) is a cross-sectional view taken along line EE of (b), and FIG. 5 shows an incompletely connected state of the pinion shaft and the yoke in the connection structure. It is a figure shown, Comprising: (a) is a side view, (b) is the FF sectional view taken on the line of (a). .

本実施の形態は、本発明を図１に示す車両のステアリング装置における軸部材であるピニオンシャフト１とステアリングシャフト２の端部に結着されたユニバーサルジョイント３の受け部材であるヨーク４との連結構造に適用したものである。   In this embodiment, the present invention is connected to a pinion shaft 1 that is a shaft member in the steering apparatus for a vehicle shown in FIG. 1 and a yoke 4 that is a receiving member of a universal joint 3 that is bound to an end of the steering shaft 2. It is applied to the structure.

上記ステアリングシャフト２は、その軸中心回りに回転可能であって、不図示の車室内に車両前方（図１の左方）に向かって下がるよう斜めに配されており、その下端には前記ユニバーサルジョイント３を介して前記ピニオンシャフト１が連結されている。尚、ステアリングシャフト２の上端には不図示のステアリングホイールが結着されている。又、ユニバーサルジョイント３は、２つのヨーク４，５同士を十字状の軸６によって連結して成る自在継手である。   The steering shaft 2 is rotatable about its axis, and is disposed obliquely in a vehicle interior (not shown) so as to descend toward the front of the vehicle (left side in FIG. 1). The pinion shaft 1 is connected via a joint 3. A steering wheel (not shown) is attached to the upper end of the steering shaft 2. The universal joint 3 is a universal joint formed by connecting two yokes 4 and 5 with a cross-shaped shaft 6.

上記ピニオンシャフト１は、ステアリングギヤボックス７から斜め上方に突出しており、ダッシュパネルを貫通して車室内に突出する上端部は本発明に係る連結構造によって前記ユニバーサルジョイント３の一方のヨーク４に連結されている。即ち、ピニオンシャフト１は、その先端部がユニバーサルジョイント３の一方のヨーク４に差し込まれ、ヨーク４に挿通螺合するボルト８を締め付けることによってヨーク４に連結されている。   The pinion shaft 1 protrudes obliquely upward from the steering gear box 7, and an upper end portion that protrudes into the vehicle interior through the dash panel is connected to one yoke 4 of the universal joint 3 by the connection structure according to the present invention. Has been. That is, the pinion shaft 1 is connected to the yoke 4 by tightening a bolt 8 that is inserted into and screwed into the yoke 4 at one end of the universal joint 3.

ここで、本発明に係る連結構造の詳細を図２に基づいて以下に説明する。   Here, the detail of the connection structure which concerns on this invention is demonstrated below based on FIG.

ピニオンシャフト１の先端部には、前記ボルト８の軸部を受け入れ可能に該ボルト８の軸断面形状の外周に沿って円弧曲面状に形成された溝である凹部１ａが軸回りの全周に亘って形成されており、該ピニオンシャフト１のヨーク４への挿入方向（図２の矢印方向）において前記凹部１ａの前後（先端部側とその後方部側）には第１軸部１Ａとこれよりも大径の第２軸部１Ｂが形成されている。つまり、ピニオンシャフト１の先端部から軸方向後方に向かって第１軸部１Ａ、凹部１ａ、第２軸部１Ｂが順に形成されている。そして、第１軸部１Ａと第２軸部１Ｂには歯数が同数の複数のセレーションが周方向に同位相で軸方向にそれぞれ形成されている。ここで、第１軸部１Ａと第２軸部１Ｂにそれぞれ形成されたセレーションの歯厚は互いに異なっており、第１軸部１Ａに形成されたセレーションの歯厚は薄く、第２軸部１Ｂに形成されたセレーションの歯厚は厚く設定されている。この場合、ピニオンシャフト１の軸方向において第１軸部１Ａと第２軸部１Ｂとの間に凹部１ａが形成されているため、第１軸部１Ａと第２軸部１Ｂに対するセレーションの加工が容易化する。   At the tip of the pinion shaft 1, there is a recess 1a that is a groove formed in an arcuate curved shape along the outer periphery of the axial section of the bolt 8 so as to be able to receive the shaft of the bolt 8. The first shaft portion 1A and the first shaft portion 1A are disposed at the front and rear (the tip portion side and the rear portion side) of the recess 1a in the insertion direction of the pinion shaft 1 into the yoke 4 (in the direction of the arrow in FIG. 2). A second shaft portion 1B having a larger diameter than the first shaft portion 1B is formed. That is, the first shaft portion 1A, the concave portion 1a, and the second shaft portion 1B are formed in this order from the distal end portion of the pinion shaft 1 toward the rear in the axial direction. A plurality of serrations having the same number of teeth are formed on the first shaft portion 1A and the second shaft portion 1B in the axial direction with the same phase in the circumferential direction. Here, the tooth thicknesses of the serrations formed on the first shaft portion 1A and the second shaft portion 1B are different from each other, the tooth thicknesses of the serrations formed on the first shaft portion 1A are thin, and the second shaft portion 1B. The tooth thickness of the serrations formed in is set to be thick. In this case, since the recess 1a is formed between the first shaft portion 1A and the second shaft portion 1B in the axial direction of the pinion shaft 1, serration processing for the first shaft portion 1A and the second shaft portion 1B is performed. Make it easier.

他方、ヨーク４にはピニオンシャフト１の先端部が差し込まれるセレーション孔が形成されており、このセレーション孔にはピニオンシャフト１の第１軸１Ａと第２軸１Ｂがそれぞれ嵌合する異径の第１孔部４Ａと第２孔部４Ｂが挿入方向に沿ってそれぞれ形成されている。即ち、セレーション孔の開口側には内径の大きな第２孔部２Ｂが形成され、その奥に内径の小さな第１孔部４Ａが形成されている。そして、第１孔部４Ａと第２孔部４Ｂには歯溝が同数（ピニオンシャフト１の第１軸部１Ａと第２軸部１Ｂに形成されたセレーションの歯数とも同数）の複数のセレーションが周方向に同位相で軸方向にそれぞれ形成されている。   On the other hand, the yoke 4 is formed with a serration hole into which the tip of the pinion shaft 1 is inserted, and the serration holes have different diameters to which the first shaft 1A and the second shaft 1B of the pinion shaft 1 are respectively fitted. The 1 hole part 4A and the 2nd hole part 4B are each formed along the insertion direction. That is, a second hole 2B having a large inner diameter is formed on the opening side of the serration hole, and a first hole 4A having a small inner diameter is formed in the back thereof. The first hole 4A and the second hole 4B have a plurality of serrations having the same number of tooth grooves (the same number of teeth as the serrations formed on the first shaft portion 1A and the second shaft portion 1B of the pinion shaft 1). Are formed in the axial direction with the same phase in the circumferential direction.

ここで、ヨーク４の第１孔部４Ａと第２孔部４Ｂにそれぞれ形成されたセレーション孔の歯溝の幅は互いに異なっており、第１孔部４Ａに形成されたセレーション孔の歯溝の幅は狭く、第２孔部４Ｂに形成されたセレーション孔の歯溝は広く設定されている。後述のように、ピニオンシャフト１とヨーク４との連結は、ピニオンシャフトの第１軸部１Ａと第２軸部１Ｂにそれぞれ形成されたセレーションがヨーク４の第１孔部４Ａと第２孔部４Ｂにそれぞれ形成されたセレーション孔に嵌合することによってなされるが、互いに嵌合する第１軸部１Ａのセレーションの歯厚と第１孔部４Ａのセレーション孔の歯溝の幅は略同一に設定され、第２軸部１Ｂのセレーションの歯厚と第２孔部４Ｂのセレーション孔の歯溝の幅も略同一に設定されている。   Here, the widths of the tooth grooves of the serration holes formed in the first hole 4A and the second hole 4B of the yoke 4 are different from each other, and the tooth grooves of the serration holes formed in the first hole 4A are different from each other. The width is narrow, and the tooth groove of the serration hole formed in the second hole 4B is set wide. As will be described later, the pinion shaft 1 and the yoke 4 are connected to each other by serrations formed on the first shaft portion 1A and the second shaft portion 1B of the pinion shaft, respectively. This is done by fitting into the serration holes formed in 4B respectively, but the tooth thickness of the serration of the first shaft portion 1A and the width of the tooth groove of the serration hole of the first hole portion 4A are substantially the same. The tooth thickness of the serration of the second shaft portion 1B and the width of the tooth groove of the serration hole of the second hole portion 4B are set substantially the same.

又、ヨーク４のセレーション孔（第１孔部４Ａと第２孔部４Ｂ）が形成された部位には軸方向に沿ったスリット４ａがセレーション孔の開口縁から所定長さに亘って形成されており、このスリット４ａを挟んでこれの両側にはフランジ４ｂ，４ｃがそれぞれ形成されている。そして、フランジ４ｂ，４ｃにはボルト用孔（一方のフランジ４ｂに形成されたボルト挿通孔９と他方のフランジ４ｃに形成されたネジ孔１０）が軸直角方向（ピニオンシャフト１の挿入方向に対して垂直方向）に貫設されている。ここで、ボルト用孔（ボルト挿通孔９とネジ孔１０）は軸方向において第１孔部４Ａの位置に形成されている。これによって、ボルト８をヨーク４のセレーション孔（第１孔部４Ａと第２孔部４Ｂ）の軸心に近づけて配置することができ、ヨーク４を小型化及び軽量化することができる。   In addition, a slit 4a along the axial direction is formed over a predetermined length from the opening edge of the serration hole at a portion of the yoke 4 where the serration holes (the first hole 4A and the second hole 4B) are formed. The flanges 4b and 4c are formed on both sides of the slit 4a. The flanges 4b and 4c have bolt holes (bolt insertion holes 9 formed in one flange 4b and screw holes 10 formed in the other flange 4c) in a direction perpendicular to the axis (relative to the insertion direction of the pinion shaft 1). In the vertical direction). Here, the bolt hole (bolt insertion hole 9 and screw hole 10) is formed at the position of the first hole 4A in the axial direction. Accordingly, the bolt 8 can be disposed close to the axis of the serration hole (the first hole portion 4A and the second hole portion 4B) of the yoke 4, and the yoke 4 can be reduced in size and weight.

而して、ピニオンシャフト１とヨーク４との連結作業に際して、組付作業者は、車両に乗り込み、不図示のダッシュパネルの孔から車室内に突出したピニオンシャフト１の先端に、ステアリングシャフト２の下端に取り付けられたユニバーサルジョイント３のヨーク４を取り付ける。或いは、ダッシュパネルの孔から不図示のエンジンルーム内に突出したヨーク４をピニオンシャフト１の先端に取り付ける。   Thus, when connecting the pinion shaft 1 and the yoke 4, the assembly operator gets into the vehicle and attaches the steering shaft 2 to the tip of the pinion shaft 1 protruding into the vehicle compartment from a hole in a dash panel (not shown). The yoke 4 of the universal joint 3 attached to the lower end is attached. Alternatively, the yoke 4 protruding into the engine room (not shown) from the hole in the dash panel is attached to the tip of the pinion shaft 1.

ここで、ピニオンシャフト１とヨーク４との連結要領を図３〜図５に基づいて説明する。   Here, the connection point between the pinion shaft 1 and the yoke 4 will be described with reference to FIGS.

ピニオンシャフト１とヨーク４との連結に際しては、ピニオンシャフト１の先端部がヨーク４のセレーション孔に差し込まれ（実際には、ピニオンシャフト１の先端部にヨーク４のセレーション孔が差し込まれる）、図３に示すようにピニオンシャフト１の第１軸部１Ａと第２軸部１Ｂがヨーク４の第１孔部４Ａと第２孔部４Ｂにそれぞれ適正に嵌合（セレーション嵌合）すると、ピニオンシャフト１に形成された凹部１ａがヨーク４の第１孔部４Ａに位置してボルト用孔（ボルト挿通孔９とネジ孔１０）に合致する。従って、この状態ではボルト８をヨーク４のボルト挿通孔９から通してネジ孔１０にねじ込むことができるため、ボルト８の締め込みによってヨーク４のスリット４ａの幅が狭くなってピニオンシャフト１の第１軸部１Ａと第２軸部１Ｂがヨーク４の第１孔部４Ａと第２孔部４Ｂによって締め付けられ、ピニオンシャフト１とヨーク４とが確実に連結され、ステアリングハンドルの操作によるステアリングシャフト２の回転がユニバーサルジョイント３を介してピニオンシャフト１に伝達され、車輪が所望の方向に確実に転舵される。   When the pinion shaft 1 and the yoke 4 are connected, the tip of the pinion shaft 1 is inserted into the serration hole of the yoke 4 (actually, the serration hole of the yoke 4 is inserted into the tip of the pinion shaft 1). As shown in FIG. 3, when the first shaft portion 1A and the second shaft portion 1B of the pinion shaft 1 are properly fitted into the first hole portion 4A and the second hole portion 4B of the yoke 4, respectively, the pinion shaft 1 is located in the first hole 4A of the yoke 4 and matches the bolt hole (bolt insertion hole 9 and screw hole 10). Therefore, in this state, the bolt 8 can be passed through the bolt insertion hole 9 of the yoke 4 and screwed into the screw hole 10, so that the width of the slit 4 a of the yoke 4 is narrowed by tightening the bolt 8 and the pinion shaft 1 The first shaft portion 1A and the second shaft portion 1B are fastened by the first hole portion 4A and the second hole portion 4B of the yoke 4, so that the pinion shaft 1 and the yoke 4 are securely connected, and the steering shaft 2 is operated by operating the steering wheel. Is transmitted to the pinion shaft 1 via the universal joint 3, and the wheel is reliably steered in a desired direction.

ところで、ピニオンシャフト１の第１軸部１Ａには歯厚の薄いセレーションが形成され、ヨーク４の第２孔部４Ｂには歯溝の幅が大きなセレーション孔が形成されているため、ピニオンシャフト１のヨーク４への挿入初期の両者の嵌合が容易になされる。   By the way, since the serration with a small tooth thickness is formed in the first shaft portion 1A of the pinion shaft 1 and the serration hole with a large tooth gap is formed in the second hole portion 4B of the yoke 4, the pinion shaft 1 In the initial stage of insertion into the yoke 4, the both can be easily fitted.

そして、図３に示すようにピニオンシャフト１とヨーク４が適正に連結された状態ではボルト８がピニオンシャフト１の凹部１ａに係合するため、ヨーク４のピニオンシャフト１からの抜けが確実に防がれる。   As shown in FIG. 3, when the pinion shaft 1 and the yoke 4 are properly connected, the bolt 8 is engaged with the recess 1a of the pinion shaft 1, so that the yoke 4 is reliably prevented from coming off from the pinion shaft 1. Can be removed.

而して、図３に示すようにピニオンシャフト１とヨーク４とが適正に連結された状態では、ピニオンシャフト１の第１軸部１Ａと第２軸部１Ｂ及びヨーク４の第１孔部４Ａと第２孔部４Ｂはそれぞれその全長部分が嵌合に寄与して無駄な部分が存在しないため、軸方向長さや重量増加を招くことなくピニオンシャフト１とヨーク４との嵌合長さを十分確保することができる。   Thus, as shown in FIG. 3, in a state where the pinion shaft 1 and the yoke 4 are properly connected, the first shaft portion 1 </ b> A and the second shaft portion 1 </ b> B of the pinion shaft 1 and the first hole portion 4 </ b> A of the yoke 4. The second hole 4B has a full-length portion that contributes to fitting and there is no useless portion, so that the fitting length between the pinion shaft 1 and the yoke 4 is sufficiently long without causing an increase in axial length or weight. Can be secured.

又、本実施の形態では、ピニオンシャフト１の第１軸部１Ａと第２軸部１Ｂ及びヨーク４の第１孔部４Ａと第２孔部４Ｂに歯数が同数で周方向に同位相のセレーションを形成したため、形状の異方性がなくなり、ピニオンシャフト１とヨーク４とをどの回転角度位置からでも容易にセレーション嵌合によって連結することができるとともに、製造及び製造管理が容易化する。   In the present embodiment, the first shaft portion 1A and the second shaft portion 1B of the pinion shaft 1 and the first hole portion 4A and the second hole portion 4B of the yoke 4 have the same number of teeth and the same phase in the circumferential direction. Since the serrations are formed, there is no shape anisotropy, and the pinion shaft 1 and the yoke 4 can be easily connected from any rotational angle position by serration fitting, and manufacturing and manufacturing management are facilitated.

更に、本実施の形態では、互いに嵌合するピニオンシャフト１の第１軸部１Ａのセレーションの歯厚とヨーク４の第１孔部４Ａのセレーション孔の歯溝の幅を略同一に設定し、ピニオンシャフト１の第２軸部１Ｂのセレーションの歯厚とヨーク４の第２孔部４Ｂのセレーション孔の歯溝の幅も略同一に設定したため、図３（ｃ），（ｄ）に示すように、第１軸部１Ａと第２軸部１Ｂの各セレーションの歯が第１孔部４Ａと第２孔部４Ｂの各セレーション孔の歯溝にそれぞれ緊密に嵌合し、ピニオンシャフト１とヨーク４とのセレーションによる嵌合がガタ無く確実になされ、何れの回転方向においても確実な回転力の伝達が可能となる。そして、この場合、全てセレレーションの歯と歯溝が回転力の伝達に寄与するため、セレーションの長さを最小限に抑えてピニオンシャフト１とヨーク４との連結構造を小型化することができる。   Furthermore, in the present embodiment, the tooth thickness of the serration of the first shaft portion 1A of the pinion shaft 1 and the width of the tooth groove of the serration hole of the first hole portion 4A of the yoke 4 are set to be substantially the same. Since the tooth thickness of the serration of the second shaft portion 1B of the pinion shaft 1 and the width of the tooth groove of the serration hole of the second hole portion 4B of the yoke 4 are set substantially the same, as shown in FIGS. Further, the teeth of the serrations of the first shaft portion 1A and the second shaft portion 1B are closely fitted in the tooth grooves of the serration holes of the first hole portion 4A and the second hole portion 4B, respectively, and the pinion shaft 1 and the yoke The fitting with the serration 4 is surely performed without any play, and a reliable rotational force can be transmitted in any rotational direction. In this case, all of the serration teeth and the tooth gap contribute to the transmission of the rotational force, so that the connection structure between the pinion shaft 1 and the yoke 4 can be miniaturized while minimizing the length of the serration. .

ところが、ピニオンシャフト１のヨーク４への挿入が不完全であって、図４に示すようにピニオンシャフト１の小径の第１軸部１Ａがヨーク４の大径の第２孔部４Ｂまでしか挿入されていない状態では、ボルト８をヨーク４のボルト用孔（ボルト挿通孔９とネジ孔１０）に通すことができても、歯厚の薄いセレーションが形成されたピニオンシャフト１の第１軸部１Ａと歯溝の広いセレーション孔が形成されたヨーク４の第２孔部４Ｂとの嵌合には図４（ｃ）に示すように周方向のガタが発生するため、組付作業者はピニオンシャフト１のヨーク４への挿入が不完全であることを容易に発見することができる。   However, the insertion of the pinion shaft 1 into the yoke 4 is incomplete, and the small-diameter first shaft portion 1A of the pinion shaft 1 is inserted only up to the large-diameter second hole portion 4B of the yoke 4 as shown in FIG. If not, the first shaft portion of the pinion shaft 1 in which the serration with a small tooth thickness is formed even though the bolt 8 can be passed through the bolt holes (the bolt insertion hole 9 and the screw hole 10) of the yoke 4. As shown in FIG. 4 (c), the fitting between 1A and the second hole 4B of the yoke 4 in which the serration hole having a wide tooth gap is formed generates a circumferential play. It can be easily found that the insertion of the shaft 1 into the yoke 4 is incomplete.

又、図５に示すようにピニオンシャフト１の第１軸部１Ａと第２軸部１Ｂがヨーク４の第１孔部４Ａと第２孔部４Ｂにそれぞれ嵌合していても、これらの嵌合が不完全であるためにピニオンシャフト１の凹部１ａがヨーク４の第１孔部４Ａの正規の位置に位置していない場合には、ステアリングシャフト２からピニオンシャフト１への回転力（操舵力）の伝達は可能であるものの、ボルト８をヨーク４のボルト用孔（ボルト挿通孔９とネジ孔１０）に通すことができないため、組付作業者はピニオンシャフト１のヨーク４への挿入が不完全であることを容易に発見することができる。   Further, as shown in FIG. 5, even if the first shaft portion 1A and the second shaft portion 1B of the pinion shaft 1 are fitted in the first hole portion 4A and the second hole portion 4B of the yoke 4, respectively, If the recess 1a of the pinion shaft 1 is not positioned at the normal position of the first hole 4A of the yoke 4 due to incomplete alignment, the rotational force (steering force) from the steering shaft 2 to the pinion shaft 1 ) Can be transmitted, but the bolt 8 cannot be passed through the bolt holes (the bolt insertion hole 9 and the screw hole 10) of the yoke 4, so that the assembly operator can insert the pinion shaft 1 into the yoke 4. Can be easily found to be incomplete.

ところで、車両におけるステアリングシャフト２とピニオンシャフト１との連結は、狭い作業空間しか確保することができない作業となり、又、両者の連結箇所は、車両完成後の確認作業が難しい場所であるが、本実施の形態に係る連結構造によれば、ステアリングシャフト２（ヨーク４）とピニオンシャフト１との連結が不完全であることが前述のように容易に発見されるため、確実な連結作業が可能となる。   By the way, the connection between the steering shaft 2 and the pinion shaft 1 in the vehicle is an operation that can ensure only a narrow work space, and the connection portion between the two is a place where it is difficult to confirm after the vehicle is completed. According to the connection structure according to the embodiment, since the connection between the steering shaft 2 (yoke 4) and the pinion shaft 1 is easily found as described above, a reliable connection operation is possible. Become.

尚、以上の実施の形態では、本発明を車両のステアリング装置のピニオンシャフトとユニバーサルジョイントのヨークとの連結構造に対して適用した形態について説明したが、本発明は、例えば車両のサスペンションにおけるサスペンションアームとナックルとの連結構造の等、他の任意の軸部材と受け部材との連結構造に対しても同様に適用可能であることは勿論である。   In the above embodiments, the present invention has been described with respect to a structure in which the present invention is applied to a connection structure between a pinion shaft of a vehicle steering device and a yoke of a universal joint. However, the present invention is, for example, a suspension arm in a suspension of a vehicle. Of course, the present invention can be similarly applied to a connection structure between any other shaft member and the receiving member, such as a connection structure between the knuckles and the knuckle.

１ ピニオンシャフト（軸部材）
１Ａ ピニオンシャフトの第１軸部
１Ｂ ピニオンシャフトの第２軸部
１ａ ピニオンシャフトの凹部
２ ステアリングシャフト
３ ユニバーサルジョイント
４ ユニバーサルジョイントのヨーク（受け部材）
４Ａ ヨークの第１孔部
４Ｂ ヨークの第２孔部
４ａ ヨークのスリット
４ｂ，４ｃ ヨークのフランジ
５ ユニバーサルジョイントのヨーク
６ ユニバーサルジョイントの軸
７ ステアリングギヤボックス
８ ボルト
９ ボルト挿通孔（ボルト用孔）
１０ ネジ孔（ボルト用孔）
1 Pinion shaft (shaft member)
1A First shaft portion of pinion shaft 1B Second shaft portion of pinion shaft 1a Recessed portion of pinion shaft 2 Steering shaft 3 Universal joint 4 Universal joint yoke (receiving member)
4A Yoke first hole 4B Yoke second hole 4a Yoke slit 4b, 4c Yoke flange 5 Universal joint yoke 6 Universal joint shaft 7 Steering gear box 8 Bolt 9 Bolt insertion hole (bolt hole)
10 Screw hole (Bolt hole)

Claims (4)

受け部材に形成された孔に軸部材の端部を挿入嵌合し、前記受け部材に形成されたボルト用孔に挿通するボルトを締め付けることによって前記軸部材を受け部材に締付固定するとともに、前記ボルトを軸部材の端部外周に形成された凹部に係合させて受け部材の軸部材からの抜けを防ぐようにした軸部材と受け部材との連結構造において、
前記軸部材に、セレーションが形成された第１軸部、前記凹部、前記第１軸部のセレーションよりも歯厚の厚いセレーションが形成された第２軸部を挿入方向先端側から順次配置するとともに、
前記受け部材の孔に、前記軸部材の第１軸部と第２軸部の各セレーションがそれぞれ嵌合するセレーション孔が形成された第１孔部と第２孔部を形成したことを特徴とする軸部材と受け部材との連結構造。 Inserting and fitting the end of the shaft member into the hole formed in the receiving member, and tightening and fixing the shaft member to the receiving member by tightening the bolt inserted into the bolt hole formed in the receiving member, In the connecting structure between the shaft member and the receiving member, the bolt is engaged with a recess formed on the outer periphery of the end of the shaft member to prevent the receiving member from coming off from the shaft member.
In the shaft member, the first shaft portion on which the serration is formed, the concave portion, and the second shaft portion on which the serration having a thicker tooth thickness than the serration of the first shaft portion is sequentially arranged from the distal end side in the insertion direction. ,
In the hole of the receiving member, a first hole portion and a second hole portion are formed in which serration holes into which the serrations of the first shaft portion and the second shaft portion of the shaft member are respectively fitted are formed. Connecting structure of shaft member and receiving member. 前記軸部材の第１軸部と第２軸部にそれぞれ形成されたセレーションの歯数及び前記受け部材の第１孔部と第２孔部にそれぞれ形成されたセレーション孔の歯溝の数を全て同数としたことを特徴とする請求項１記載の軸部材と受け部材との連結構造。   The number of teeth of the serration formed in the first shaft portion and the second shaft portion of the shaft member and the number of tooth grooves of the serration hole formed in the first hole portion and the second hole portion of the receiving member, respectively. The connecting structure of the shaft member and the receiving member according to claim 1, wherein the number is the same. 互いに嵌合する前記軸部材の第１軸部のセレーションの歯厚と前記受け部材の第１孔部のセレーション孔の歯溝の幅及び前記軸部材の第２軸部のセレーションの歯厚と前記受け部材の第２孔部のセレーション孔の歯溝の幅を略同一に設定したことを特徴とする請求項１又は２記載の軸部材と受け部材との連結構造。   The tooth thickness of the serration of the first shaft portion of the shaft member fitted to each other, the width of the tooth groove of the serration hole of the first hole portion of the receiving member, the tooth thickness of the serration of the second shaft portion of the shaft member, and the The connecting structure between the shaft member and the receiving member according to claim 1 or 2, wherein the width of the tooth groove of the serration hole of the second hole portion of the receiving member is set to be substantially the same. 前記軸部材は、車両のステアリングボックスから車室内に突出するピニオンシャフトであり、前記受け部材は、ステアリングシャフトの端部に結着されたジョイントのヨークであることを特徴とする請求項１〜３の何れかに記載の軸部材と受け部材との連結構造。
The shaft member is a pinion shaft that protrudes from a steering box of a vehicle into a vehicle compartment, and the receiving member is a joint yoke that is bound to an end portion of the steering shaft. The connection structure of the shaft member and receiving member in any one of.
JP2010052619A 2010-03-10 2010-03-10 Connecting structure for shaft member and receiving member Pending JP2011185381A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016156431A (en) * 2015-02-24 2016-09-01 日本精工株式会社 Connection structure of yoke of universal joint and shaft member, and steering device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016156431A (en) * 2015-02-24 2016-09-01 日本精工株式会社 Connection structure of yoke of universal joint and shaft member, and steering device

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