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JP2007303480A - Joining structure of yoke and shaft of universal joint - Google Patents

Joining structure of yoke and shaft of universal joint Download PDF

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Publication number
JP2007303480A
JP2007303480A JP2006129253A JP2006129253A JP2007303480A JP 2007303480 A JP2007303480 A JP 2007303480A JP 2006129253 A JP2006129253 A JP 2006129253A JP 2006129253 A JP2006129253 A JP 2006129253A JP 2007303480 A JP2007303480 A JP 2007303480A
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Japan
Prior art keywords
shaft
yoke
wall surface
tabs
pair
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Pending
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JP2006129253A
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Japanese (ja)
Inventor
Kenji Sakamoto
賢志 坂本
Hideaki Ishii
秀明 石井
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JTEKT Corp
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JTEKT Corp
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Priority to JP2006129253A priority Critical patent/JP2007303480A/en
Publication of JP2007303480A publication Critical patent/JP2007303480A/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
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joining structure of a yoke and a shaft, capable of preventing generation of vibration of the shaft and an abnormal sound caused by its vibration. <P>SOLUTION: This yoke 2 has mutually parallel first and second tabs 7 and 8 and a connecting part 9 connecting the first and second tabs 7 and 8. The first and second tabs 7 and 8 have respectively sandwiching surfaces 10 and 11 forming a recessed part 50. The respective recessed parts 50 have a wall surface 52 orthogonal to the sandwiching surfaces 10 and 11. The shaft 1 has a pair of flat surfaces 24 and 25 respectively opposed to the sandwiching surfaces 10 and 11 and circular arc-shaped parts 26 and 27 respectively connecting the pair of flat surfaces 24 and 25. The respective flat surfaces 24 and 25 have a projection part 51 corresponding to the respective recessed parts 50, and a wall surface 53 of the projection part 51 is engaged with the wall surface 52 of the recessed parts 50. The shaft 1 is energized toward the connecting part 9 by a cam part 21 of a bolt 16 for inserting the first and second tabs 7 and 8, and the wall surface 53 is pressed to the wall surface 52. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

この発明は、自在継手のヨークとシャフトの結合構造に関するものである。   The present invention relates to a joint structure between a universal joint yoke and a shaft.

この種のヨークとシャフトの結合構造では、互いに平行な一対のタブを有して断面Ｕ字形状をなすヨークに、シャフトを嵌合し、一対のタブを挿通したボルトをナットにねじ込むことにより、シャフトを一対のタブで締め付けて固定している。
シャフトは、互いの間に二面幅を形成する一対の平坦面を有しており、これら一対の平坦面は、各タブの内側面に設けられた挟持面によって挟持されている（例えば、特許文献１参照）。
特開２００４−３６０８５６号公報 In this type of yoke-shaft coupling structure, a shaft is fitted into a yoke having a pair of tabs parallel to each other and having a U-shaped cross section, and a bolt inserted through the pair of tabs is screwed into a nut. The shaft is fixed with a pair of tabs.
The shaft has a pair of flat surfaces forming a two-sided width between each other, and the pair of flat surfaces are sandwiched by a sandwiching surface provided on the inner surface of each tab (for example, a patent) Reference 1).
JP 2004-360856 A

上述のような結合構造では、一対のタブは、Ｕ字の開放側の端部においてボルトおよびナットによって締め付けられている。このため、一対のタブ間の間隔が、Ｕ字の開放側の端部において相対的に狭くなるように、一対のタブが「ハ」の字状に撓んでいる。その結果、一対の平坦面とそれに対応する挟持面とは、ボルトおよびナットの近傍においてのみ接触している。このように、シャフトはヨークに安定して固定されていないため、ヨークに対してシャフトがその軸線回りに回転振動を発生する場合がある。すなわち、いわゆるスティックスリップを発生してシャフトが振動する場合がある。また、その際に音が発生し異音として問題視される場合もある。   In the coupling structure as described above, the pair of tabs are fastened by bolts and nuts at the end of the U-shaped open side. For this reason, the pair of tabs is bent in a “C” shape so that the distance between the pair of tabs is relatively narrow at the end of the U-shaped open side. As a result, the pair of flat surfaces and the corresponding clamping surfaces are in contact only in the vicinity of the bolts and nuts. Thus, since the shaft is not stably fixed to the yoke, the shaft may generate rotational vibration around the axis of the yoke. That is, the shaft may vibrate due to so-called stick slip. In addition, a sound may be generated at that time and may be regarded as a problem as an abnormal sound.

この発明は、かかる背景のもとになされたものであり、シャフトの振動やそれに伴う異音の発生を防止することができるヨークおよびシャフトの結合構造を提供することを目的とする。   The present invention has been made based on such a background, and an object of the present invention is to provide a coupling structure of a yoke and a shaft that can prevent the vibration of the shaft and the accompanying abnormal noise.

上記目的を達成するため、本発明は、互いに平行な一対のタブ（７，８）を有してＵ字状をなし、各タブの内側面に挟持面（１０，１１）を有するヨーク（２）と、互いの間に二面幅を形成する一対の被挟持面（２４，２５）を有するシャフト（１）と、一対のタブ間にシャフトを締め付けて固定する固定機構（１６，１７，１６０，１６１，１７０）とを備え、少なくとも一方の挟持面およびこれに対応する被挟持面の何れか一方に設けられた凸部（５１，３６）の壁面（５３，３７，３８）が、他方に設けられた凹部（５０，５００）の壁面（５２，３１，３２）に係合することにより、シャフトがその軸線回りにヨークに対して相対回転することが規制されている、自在継手のヨークとシャフトの結合構造（Ｐ１，Ｐ２，Ｐ３）である。   In order to achieve the above object, the present invention provides a yoke (2) having a pair of tabs (7, 8) parallel to each other and having a U-shape, and a holding surface (10, 11) on the inner surface of each tab. ) And a shaft (1) having a pair of sandwiched surfaces (24, 25) that form a two-sided width therebetween, and a fixing mechanism (16, 17, 160) for fastening the shaft between a pair of tabs. , 161, 170), and the wall surfaces (53, 37, 38) of the convex portions (51, 36) provided on at least one of the sandwiching surfaces and the sandwiched surfaces corresponding thereto are provided on the other side. A universal joint yoke, wherein the shaft is restricted from rotating relative to the yoke about its axis by engaging with the wall surface (52, 31, 32) of the provided recess (50, 500); It is a shaft coupling structure (P1, P2, P3)

本発明によれば、ヨークおよびシャフトの何れか一方に設けられた凸部の壁面が、他方に設けられた凹部の壁面に係合することにより、ヨークに対してシャフトがその軸線回りに回転することを規制することができる。これにより、シャフトをヨークに安定して固定することができ、その結果、いわゆるスティックスリップによるシャフトの振動やそれに伴う異音の発生を防止することができる。   According to the present invention, the wall surface of the convex portion provided on one of the yoke and the shaft is engaged with the wall surface of the concave portion provided on the other, whereby the shaft rotates about its axis with respect to the yoke. Can be regulated. As a result, the shaft can be stably fixed to the yoke, and as a result, vibration of the shaft due to so-called stick-slip and generation of abnormal noise associated therewith can be prevented.

また、本発明において、上記凸部はシャフトの被挟持面に設けられるとともに、上記凹部はヨークの挟持面に設けられ、上記固定機構は、シャフトの頂部（２９）を押すことによりシャフトをＵ字状のヨーク底（１２）に向けて付勢するカム部（２１）を有し、カム部によりシャフトが付勢されることにより、シャフトの被挟持面に設けられた凸部の壁面が、ヨークの対応する挟持面に設けられた凹部の壁面に押圧され、その結果、上記相対回転が規制されるようにしてある場合がある。この場合、カム部によって、シャフトをヨーク底に向けて付勢して、凸部の壁面を凹部の壁面に押圧することができるので、ヨークに対するシャフトの回転を効果的に防止することができる。   Further, in the present invention, the convex portion is provided on the sandwiched surface of the shaft, the concave portion is provided on the sandwiching surface of the yoke, and the fixing mechanism pushes the top portion (29) of the shaft to make the shaft U-shaped. Having a cam portion (21) that urges toward the yoke bottom (12), and the shaft is urged by the cam portion, so that the wall surface of the convex portion provided on the clamped surface of the shaft becomes the yoke May be pressed against the wall surface of the recess provided in the corresponding clamping surface, and as a result, the relative rotation may be restricted. In this case, the cam portion can urge the shaft toward the yoke bottom to press the wall surface of the convex portion against the wall surface of the concave portion, so that rotation of the shaft relative to the yoke can be effectively prevented.

また、本発明において、上記固定機構は、一対のタブを挿通するボルト（１６，１６０，１６１）と、ボルトに嵌合するナット（１７，１７０）とを含み、上記凹部はシャフトの被挟持面に設けられ、上記凸部はヨークの挟持面から突出する上記ナットの一部（３６）を含む、場合がある。この場合、シャフトの被挟持面に設けられた凹部とナットの一部の係合により、ヨークに対するシャフトの回転を規制することができる。また、ボルトをナットにねじ込むことにより、凹部の壁面に凸部の壁面を押圧することができるので、ヨークに対するシャフトの回転を効果的に防止することができる。   In the present invention, the fixing mechanism includes a bolt (16, 160, 161) for inserting a pair of tabs and a nut (17, 170) fitted to the bolt, and the concave portion is a sandwiched surface of the shaft. The protrusion may include a part (36) of the nut protruding from the holding surface of the yoke. In this case, the rotation of the shaft with respect to the yoke can be restricted by the engagement of the concave portion provided on the sandwiched surface of the shaft and a part of the nut. Further, by screwing the bolt into the nut, the wall surface of the convex portion can be pressed against the wall surface of the concave portion, so that rotation of the shaft relative to the yoke can be effectively prevented.

なお、上記において、括弧内の英数字は、後述の実施形態における対応構成要素の参照符号を表すものであるが、これらの参照符号により特許請求の範囲を限定する趣旨ではない。   In the above description, the alphanumeric characters in parentheses represent reference numerals of corresponding components in the embodiments described later, but the scope of the claims is not limited by these reference numerals.

以下には、図面を参照して、この発明の実施形態について具体的に説明する。
図１は、本発明の一実施形態に係るヨーク２およびシャフト１の結合構造Ｐ１の正面図である。
図１を参照して、自動車のステアリング装置における、例えばインターミディエイトシャフトからなるシャフト１は、ヨーク２に固定されており、このヨーク２は、十字軸３を介して他のヨーク４に連結されている。ヨーク２は、シャフト１を嵌合する嵌合部５と、十字軸３に連結するためのアーム部６とからなり、プレス成形により一体に形成されている。 Embodiments of the present invention will be specifically described below with reference to the drawings.
FIG. 1 is a front view of a coupling structure P1 of a yoke 2 and a shaft 1 according to an embodiment of the present invention.
Referring to FIG. 1, a shaft 1 made of, for example, an intermediate shaft in an automobile steering apparatus is fixed to a yoke 2, and this yoke 2 is connected to another yoke 4 via a cross shaft 3. Yes. The yoke 2 includes a fitting portion 5 that fits the shaft 1 and an arm portion 6 that is connected to the cross shaft 3 and is integrally formed by press molding.

図２は、結合構造Ｐ１の分解斜視図であり、図３は、シャフト１の軸方向Ｙ１と直交する方向に関する結合構造Ｐ１の断面図である。
図２を参照して、嵌合部５は、断面Ｕ字状をなしており、互いに平行に延びる第１および第２のタブ７，８と、これら第１および第２のタブ７，８を相互に接続する連結部９とを有している。第１および第２のタブ７，８は、Ｕ字の開放側となる第１の端部７ａ，８ａと、これと反対側の第２の端部７ｂ，８ｂとをそれぞれ有している。連結部９は、第１および第２のタブ７，８の第２の端部７ｂ，８ｂを連結している。また、第１および第２のタブ７，８は、その内側面からなり、互いに平行に向かい合う挟持面１０，１１をそれぞれ有している。挟持面１０，１１と、連結部９の内面からなるヨーク底としての受け面１２とによって、シャフト１を受け入れる受け入れ溝１３が区画されている。 FIG. 2 is an exploded perspective view of the coupling structure P1, and FIG. 3 is a cross-sectional view of the coupling structure P1 in a direction orthogonal to the axial direction Y1 of the shaft 1.
Referring to FIG. 2, fitting portion 5 has a U-shaped cross section, and includes first and second tabs 7 and 8 extending in parallel with each other, and first and second tabs 7 and 8. It has the connection part 9 connected mutually. The 1st and 2nd tabs 7 and 8 have 1st edge part 7a, 8a used as the open side of a U-shape, and 2nd edge part 7b, 8b on the opposite side, respectively. The connecting portion 9 connects the second ends 7 b and 8 b of the first and second tabs 7 and 8. Moreover, the 1st and 2nd tabs 7 and 8 consist of the inner surface, respectively, and have the clamping surfaces 10 and 11 which face mutually parallel. A receiving groove 13 for receiving the shaft 1 is defined by the clamping surfaces 10 and 11 and a receiving surface 12 as a yoke bottom formed by the inner surface of the connecting portion 9.

第１および第２のタブ７，８には、これら第１の端部７ａ，８ａに近接する位置においてボルト挿通孔１４，１５が、それぞれ、形成されている。第１および第２のタブ７，８のボルト挿通孔１４，１５に挿通された締結軸としてのボルト１６をナット１７にねじ込むことにより、両タブ７，８間にシャフト１が締め付けられて固定されるようになっている。   Bolt insertion holes 14 and 15 are formed in the first and second tabs 7 and 8 at positions close to the first ends 7a and 8a, respectively. By screwing a bolt 16 as a fastening shaft inserted into the bolt insertion holes 14 and 15 of the first and second tabs 7 and 8 into the nut 17, the shaft 1 is fastened and fixed between the tabs 7 and 8. It has become so.

ボルト１６は、頭部１８および首下部１９を有している。また、首下部１９は、その先端に設けられたねじ部２０と、頭部１８に隣接する円筒状の胴部からなり、ねじ部２０よりも大径のカム部２１と、ねじ部２０およびカム部２１の間に介在し、ねじ部２０に向かって先細りとなる円錐状のテーパ部２２とを有している。ねじ部２０およびカム部２１は、テーパ部２２によって連結されている。ボルト１６とナット１７とによって固定機構が構成されている。   The bolt 16 has a head portion 18 and a neck lower portion 19. The neck lower portion 19 includes a screw portion 20 provided at the tip thereof and a cylindrical body portion adjacent to the head portion 18, a cam portion 21 having a larger diameter than the screw portion 20, the screw portion 20, and the cam. It has a conical tapered portion 22 that is interposed between the portions 21 and tapers toward the screw portion 20. The threaded portion 20 and the cam portion 21 are connected by a tapered portion 22. The bolt 16 and the nut 17 constitute a fixing mechanism.

図２および図３を参照して、挟持面１０，１１には、凹部５０がそれぞれ形成されている。各凹部５０は、各タブ７，８の第１の端部７ａ，８ａから第２の端部７ｂ，８ｂに向けて所定長さで設けられており、シャフト１の軸方向Ｙ１に沿って延びている。また、各凹部５０は、それぞれ対応する挟持面１０，１１と平行な底面２３と、この底面２３と対応する挟持面１０，１１との間に段差状に形成され、対応する挟持面１０，１１に直交する壁面５２とを有している。また、第１および第２のタブ７，８に形成されたボルト挿通孔１４，１５は、それぞれ、対応する凹部５０の底面２３に開口している。   With reference to FIG. 2 and FIG. 3, concave portions 50 are respectively formed in the clamping surfaces 10 and 11. Each recess 50 is provided with a predetermined length from the first end 7a, 8a of each tab 7, 8 toward the second end 7b, 8b, and extends along the axial direction Y1 of the shaft 1. ing. Each recess 50 is formed in a step shape between a bottom surface 23 parallel to the corresponding sandwiching surfaces 10 and 11 and the sandwiching surfaces 10 and 11 corresponding to the bottom surface 23, and the corresponding sandwiching surfaces 10 and 11. And a wall surface 52 orthogonal to the. In addition, the bolt insertion holes 14 and 15 formed in the first and second tabs 7 and 8 open to the bottom surface 23 of the corresponding recess 50, respectively.

シャフト１の端部の外周面は、挟持面１０，１１にそれぞれ対向する被挟持面としての一対の平坦面２４，２５を有している。また、シャフト１の外周面は、連結部９の内面の受け面１２によって受けられる円弧状部２６と、これに対向する円弧状部２７とを有している。円弧状部２７には、上記ボルト１６のカム部２１の円周の一部を嵌合させるための嵌合溝２８が形成されている。嵌合溝２８の断面は、浅い円弧状をなしている。また、嵌合溝２８の底面２９は、図３に示すように、一対の平坦面２４，２５に直交する方向Ｘ１に延びる平坦な面となっている。   The outer peripheral surface of the end portion of the shaft 1 has a pair of flat surfaces 24 and 25 as sandwiched surfaces facing the sandwiching surfaces 10 and 11, respectively. Further, the outer peripheral surface of the shaft 1 has an arcuate portion 26 that is received by the receiving surface 12 on the inner surface of the connecting portion 9 and an arcuate portion 27 that faces the arcuate portion 27. The arcuate portion 27 is formed with a fitting groove 28 for fitting a part of the circumference of the cam portion 21 of the bolt 16. The cross section of the fitting groove 28 has a shallow arc shape. Further, the bottom surface 29 of the fitting groove 28 is a flat surface extending in the direction X1 orthogonal to the pair of flat surfaces 24 and 25, as shown in FIG.

一対の平坦面２４，２５には、凸部５１がそれぞれ形成されている。各凸部５１は、各平坦面２４，２５と円弧状部２７との境界部分に設けられており、シャフト１の軸方向Ｙ１に沿って延びている。また、各凸部５１は、円弧状部２７と対応する平坦面２４，２５とを連結し、対応する平坦面２４，２５と直交する方向Ｘ１に沿う平坦面からなる壁面５３を有している。   Convex portions 51 are respectively formed on the pair of flat surfaces 24 and 25. Each convex portion 51 is provided at a boundary portion between each flat surface 24, 25 and the arcuate portion 27, and extends along the axial direction Y <b> 1 of the shaft 1. In addition, each convex portion 51 has a wall surface 53 that connects the arcuate portion 27 and the corresponding flat surfaces 24 and 25, and is a flat surface along the direction X <b> 1 orthogonal to the corresponding flat surfaces 24 and 25. .

次に、ヨーク２とシャフト１との結合状態について説明する。
図３を参照して、シャフト１の端部は、嵌合部５の受け入れ溝１３内に嵌合している。また、一対のタブ７，８は、ボルト挿通孔１４，１５に挿通したボルト１６をナット１７にねじ込むことにより締め付けられている。このため、Ｕ字の開放側である第１の端部７ａ，８ａ間の間隔が、開放側と反対側の第２の端部７ｂ，８ｂよりも相対的に狭くなるように、一対のタブ７，８が「ハ」の字状に撓んでいる。したがって、シャフト１の平坦面２４，２５は、凸部５１の近傍においてのみ挟持面１０，１１と接触している。 Next, the coupling state of the yoke 2 and the shaft 1 will be described.
With reference to FIG. 3, the end portion of the shaft 1 is fitted in the receiving groove 13 of the fitting portion 5. The pair of tabs 7 and 8 are tightened by screwing bolts 16 inserted into the bolt insertion holes 14 and 15 into nuts 17. For this reason, a pair of tabs is formed so that the distance between the first ends 7a and 8a on the U-shaped open side is relatively narrower than the second ends 7b and 8b on the opposite side to the open side. 7 and 8 are bent in a “C” shape. Therefore, the flat surfaces 24 and 25 of the shaft 1 are in contact with the clamping surfaces 10 and 11 only in the vicinity of the convex portion 51.

また、ボルト１６のカム部２１が、シャフト１の嵌合溝２８の底面２９に当接することにより、シャフト１がヨーク底としての受け面１２に向けて付勢されている。さらに、シャフト１に形成された凸部５１は、ヨーク２の凹部５０にそれぞれ嵌め込まれており、凸部５１の壁面５３と凹部５０の壁面５２とが係合している。凸部５１の壁面５３は、ボルト１６のカム部２１の付勢力によって、凹部５０の壁面５２に押圧されている。   Further, the cam portion 21 of the bolt 16 abuts against the bottom surface 29 of the fitting groove 28 of the shaft 1 so that the shaft 1 is biased toward the receiving surface 12 as the yoke bottom. Further, the convex portions 51 formed on the shaft 1 are fitted into the concave portions 50 of the yoke 2, and the wall surface 53 of the convex portion 51 and the wall surface 52 of the concave portion 50 are engaged. The wall surface 53 of the convex portion 51 is pressed against the wall surface 52 of the concave portion 50 by the urging force of the cam portion 21 of the bolt 16.

したがって、シャフト１に対してその軸線回りの何れの方向に力が加わったとしても、互いに押圧状態で係合された凸部５１の壁面５３および凹部５０の壁面５２により、ヨーク２に対するシャフト１の相対回転が確実に規制される。その結果、ヨーク２に対するシャフト１の相対回転に起因する、シャフト１のスティックスリップによる振動の発生を確実に防止することができる。   Therefore, even if a force is applied to the shaft 1 in any direction around its axis, the wall surface 53 of the convex portion 51 and the wall surface 52 of the concave portion 50 that are engaged with each other in a pressed state are used. Relative rotation is reliably regulated. As a result, the occurrence of vibration due to stick-slip of the shaft 1 due to the relative rotation of the shaft 1 with respect to the yoke 2 can be reliably prevented.

図４は、本発明の別の実施形態に係る結合構造Ｐ２の断面図である。この図４において、上述の図３に示された各部と同等の構成部分については、図３と同一の参照符号を付してその説明を省略する。
図４を参照して、本実施の形態が上述の実施形態と主に相違するのは、凸部５１および凹部５０が、それぞれ、平坦面２４および第１のタブ７にのみ設けられていることにある。また、嵌合溝２８の底面２９０は、上記平坦面２４，２５と直交する方向Ｘ１に対して傾斜した平坦な面に形成されている。底面２９０は、平坦面２５から平坦面２４に向かうにしたがって高さが高くなるようにされている。すなわち、底面２９０は、ボルト１６０の頭部１８側から先端側に向かうにしたがってボルト１６０の軸線に近づくように傾斜している。 FIG. 4 is a cross-sectional view of a coupling structure P2 according to another embodiment of the present invention. In FIG. 4, the same components as those shown in FIG. 3 described above are denoted by the same reference numerals as those in FIG.
Referring to FIG. 4, this embodiment is mainly different from the above-described embodiment in that convex portion 51 and concave portion 50 are provided only on flat surface 24 and first tab 7, respectively. It is in. The bottom surface 290 of the fitting groove 28 is formed as a flat surface that is inclined with respect to the direction X1 orthogonal to the flat surfaces 24 and 25. The bottom surface 290 has a height that increases from the flat surface 25 toward the flat surface 24. That is, the bottom surface 290 is inclined so as to approach the axis of the bolt 160 from the head 18 side to the tip side of the bolt 160.

また、ボルト１６０の首下部１９０は、ねじ部２０と、頭部１８に隣接する円筒状の胴部からなり、ねじ部２０よりも大径の大径部２１ａと、ねじ部２０および大径部２１ａの間に介在し、ボルト１６０の軸方向に直交する環状段部４３とを有する。
大径部２１ａは、ねじ部２０に近い部分において底面２９０と当接しており、シャフト１にその軸線回りの時計回り方向の付勢力を与えている。これにより、凸部５１の壁面５３は、凹部５０の壁面５２に押圧されている。 The neck lower portion 190 of the bolt 160 includes a screw portion 20 and a cylindrical trunk portion adjacent to the head portion 18, a large diameter portion 21 a having a larger diameter than the screw portion 20, the screw portion 20 and the large diameter portion. 21a, and an annular step 43 that is orthogonal to the axial direction of the bolt 160.
The large-diameter portion 21a is in contact with the bottom surface 290 at a portion close to the screw portion 20, and gives the shaft 1 an urging force in the clockwise direction around the axis. Thereby, the wall surface 53 of the convex portion 51 is pressed against the wall surface 52 of the concave portion 50.

本実施形態では、ボルト１６０によってシャフト１に時計回りの付勢力を与えて、シャフト１が反時計回りに回転することを防止している。また、ボルト１６０による付勢力によって互いに加圧状態にある凸部５１の壁面５３および凹部５０の壁面５２の係合によって、ヨーク２に対するシャフト１の時計回りの相対回転が確実に規制されている。したがって、ヨーク２に対するシャフト１の相対回転に起因する、シャフト１のスティックスリップによる振動の発生を確実に防止することができる。   In the present embodiment, a clockwise urging force is applied to the shaft 1 by the bolt 160 to prevent the shaft 1 from rotating counterclockwise. Further, the clockwise relative rotation of the shaft 1 with respect to the yoke 2 is reliably restricted by the engagement of the wall surface 53 of the convex portion 51 and the wall surface 52 of the concave portion 50 which are in a pressurized state by the urging force of the bolt 160. Therefore, the occurrence of vibration due to stick-slip of the shaft 1 due to the relative rotation of the shaft 1 with respect to the yoke 2 can be reliably prevented.

図５は、本発明のさらに別の実施形態に係る結合構造Ｐ３の断面図であり、図６は、図５における結合構造Ｐ３の正面図である。この図５および図６において、上述の図１および図３に示された各部と同等の構成部分については、図１および図３と同一の参照符号を付してその説明を省略する。
図５を参照して、本実施の形態が上述の実施形態と主に相違するのは、凹部５００がシャフト１の平坦面２４に形成されており、この凹部５００に、挟持面１０から突出する凸部としてのナット１７０の一部（突出部３６）が係合していることにある。 FIG. 5 is a cross-sectional view of a coupling structure P3 according to still another embodiment of the present invention, and FIG. 6 is a front view of the coupling structure P3 in FIG. 5 and FIG. 6, the same components as those shown in FIG. 1 and FIG. 3 described above are denoted by the same reference numerals as those in FIG. 1 and FIG.
Referring to FIG. 5, this embodiment is mainly different from the above-described embodiment in that a recess 500 is formed in flat surface 24 of shaft 1 and projects from clamping surface 10 into recess 500. That is, a part of the nut 170 (projecting portion 36) as the convex portion is engaged.

凹部５００は、平坦面２４と円弧状部２７との境界部分に形成されており、平坦面２４と平行な第１の壁面３１と、平坦面２４に直交する第２の壁面３２とを有する。
図５および図６を参照して、ナット１７０は、第１のタブ７に形成されたナット係合溝３３に係合する断面Ｄ形形状をなす係合部３４と、第１のタブ７の外側面にその端部３９で当接して第１のタブ７に対するナット１７０の相対位置を規制する規制部３５とを有する。係合部３４と規制部３５とは、同軸的に結合されており、ナット１７０には、係合部３４および規制部３５の中心軸線を通り、ボルト１６１と螺合するねじ孔４２が形成されている。また、ボルト１６１の首下部１９１は、その先端から所定長さの範囲にねじ部２０が設けられている。 The concave portion 500 is formed at a boundary portion between the flat surface 24 and the arc-shaped portion 27, and has a first wall surface 31 parallel to the flat surface 24 and a second wall surface 32 orthogonal to the flat surface 24.
With reference to FIGS. 5 and 6, the nut 170 includes an engaging portion 34 having a D-shaped cross section that engages with a nut engaging groove 33 formed in the first tab 7, and the first tab 7. And a regulating portion 35 that abuts the outer side surface at the end 39 and regulates the relative position of the nut 170 with respect to the first tab 7. The engaging portion 34 and the restricting portion 35 are coaxially coupled, and the nut 170 is formed with a screw hole 42 that passes through the central axis of the engaging portion 34 and the restricting portion 35 and is screwed with the bolt 161. ing. Further, the neck portion 191 of the bolt 161 is provided with a threaded portion 20 within a predetermined length from the tip thereof.

係合部３４は、ナット係合溝３３に係合された状態で、挟持面１０よりも受け入れ溝１３側に突出する突出部３６を有している。突出部３６は、一部が凹部５００の第１の壁面３１に押圧された端面３７と、一部が第２の壁面３２に押圧された外周面３８とを有している。また、断面Ｄ形形状をなす係合部３４の周面に設けられた平坦部４０が、ナット係合溝３３の内側面４１に係合することにより、ナット係合溝３３に対するナット１７０の相対回転が規制されている。   The engaging portion 34 has a protruding portion 36 that protrudes toward the receiving groove 13 from the clamping surface 10 in a state of being engaged with the nut engaging groove 33. The protrusion 36 has an end surface 37 that is partially pressed against the first wall surface 31 of the recess 500 and an outer peripheral surface 38 that is partially pressed against the second wall surface 32. In addition, the flat portion 40 provided on the peripheral surface of the engaging portion 34 having a D-shaped cross section engages with the inner side surface 41 of the nut engaging groove 33, so that the nut 170 is relative to the nut engaging groove 33. Rotation is regulated.

本実施形態では、ボルト１６１をナット１７０にねじ込むことにより、シャフト１の凹部５００にナット１７０の突出部３６が係合され、凹部５００の第１および第２の壁面３１，３２に、それぞれ、係合部３４の端面３７および外周面３８が押圧されることになる。その結果、第１の壁面３１および端面３７により、ヨーク２に対するシャフト１の時計回りの相対回転が規制されている。また、第２の壁面３２と外周面３８とにより、ヨーク２に対するシャフト１の反時計回りの相対回転が規制されている。これにより、ヨーク２に対するシャフト１の相対回転に起因する、シャフト１のスティックスリップによる振動の発生を確実に防止することができる。   In this embodiment, by screwing the bolt 161 into the nut 170, the protruding portion 36 of the nut 170 is engaged with the concave portion 500 of the shaft 1, and the first and second wall surfaces 31 and 32 of the concave portion 500 are engaged with each other. The end surface 37 and the outer peripheral surface 38 of the joint portion 34 are pressed. As a result, the clockwise relative rotation of the shaft 1 with respect to the yoke 2 is restricted by the first wall surface 31 and the end surface 37. Further, the second wall surface 32 and the outer peripheral surface 38 restrict the counterclockwise relative rotation of the shaft 1 with respect to the yoke 2. Thereby, generation | occurrence | production of the vibration by the stick slip of the shaft 1 resulting from the relative rotation of the shaft 1 with respect to the yoke 2 can be prevented reliably.

この発明は、以上の実施形態の内容に限定されるものではなく、請求項記載の範囲内において種々の変更が可能である。例えば、図３および図４に示した実施形態では、凸部５１がシャフト１に形成され、凹部５０がヨーク２に形成されている例について説明したが、凸部５１をヨーク２に形成し、凹部５０をシャフト１に形成してもよい。   The present invention is not limited to the contents of the above embodiments, and various modifications can be made within the scope of the claims. For example, in the embodiment shown in FIG. 3 and FIG. 4, the example in which the convex portion 51 is formed on the shaft 1 and the concave portion 50 is formed on the yoke 2 has been described, but the convex portion 51 is formed on the yoke 2, The recess 50 may be formed in the shaft 1.

本発明の一実施形態に係るヨークおよびシャフトの結合構造の正面図である。It is a front view of the joint structure of the yoke and shaft which concerns on one Embodiment of this invention. 結合構造の分解斜視図である。It is a disassembled perspective view of a coupling structure. シャフトの軸方向と直交する方向に関する結合構造の断面図である。It is sectional drawing of the coupling structure regarding the direction orthogonal to the axial direction of a shaft. 本発明の別の実施形態に係る結合構造の断面図である。It is sectional drawing of the coupling structure which concerns on another embodiment of this invention. 本発明のさらに別の実施形態に係る結合構造の断面図である。It is sectional drawing of the coupling structure which concerns on another embodiment of this invention. 図５における結合構造の正面図である。It is a front view of the coupling structure in FIG.

符号の説明Explanation of symbols

１・・・シャフト、２・・・ヨーク、７・・・第１のタブ（タブ）、８・・・第２のタブ（タブ）、１０，１１・・・挟持面、１２・・・受け面（ヨーク底）、２４，２５・・・平坦面（被挟持面）、１６，１６０，１６１・・・ボルト（固定機構）、１７，１７０・・・ナット（固定機構）、２１・・・カム部、２９・・・底面（シャフトの頂部）、３１・・・第１の壁面（凹部の壁面）、３２・・・第２の壁面（凹部の壁面）、３６・・・突出部（ナットの一部）、３７・・・端面（凸部の壁面）、３８・・・外周面（凸部の壁面）、５０，５００・・・凹部、５１・・・凸部、５２・・・（凹部の）壁面、５３・・・（凸部の）壁面、Ｐ１，Ｐ２，Ｐ３・・・結合構造 DESCRIPTION OF SYMBOLS 1 ... Shaft, 2 ... Yoke, 7 ... 1st tab (tab), 8 ... 2nd tab (tab), 10, 11 ... clamping surface, 12 ... receiving Surface (yoke bottom), 24, 25 ... flat surface (clamped surface), 16, 160, 161 ... bolt (fixing mechanism), 17, 170 ... nut (fixing mechanism), 21 ... Cam part, 29 ... Bottom surface (top part of shaft), 31 ... First wall surface (wall surface of recess), 32 ... Second wall surface (wall surface of recess), 36 ... Projection (nut) ), 37... End face (wall surface of convex portion), 38... Outer peripheral surface (wall surface of convex portion), 50, 500... Concave portion, 51. (Concave) wall surface, 53 ... (convex) wall surface, P1, P2, P3 ... coupling structure

Claims (3)

互いに平行な一対のタブを有してＵ字状をなし、各タブの内側面に挟持面を有するヨークと、
互いの間に二面幅を形成する一対の被挟持面を有するシャフトと、
一対のタブ間にシャフトを締め付けて固定する固定機構とを備え、
少なくとも一方の挟持面およびこれに対応する被挟持面の何れか一方に設けられた凸部の壁面が、他方に設けられた凹部の壁面に係合することにより、シャフトがその軸線回りにヨークに対して相対回転することが規制されている、自在継手のヨークとシャフトの結合構造。 A yoke having a pair of tabs parallel to each other and having a U-shape, and a holding surface on the inner surface of each tab;
A shaft having a pair of sandwiched surfaces forming a two-sided width between each other;
A fixing mechanism for fastening and fixing the shaft between a pair of tabs;
The wall surface of the convex portion provided on at least one of the sandwiching surfaces and the sandwiched surface corresponding thereto engages with the wall surface of the concave portion provided on the other side, so that the shaft is attached to the yoke around its axis. A joint structure of a universal joint yoke and shaft that is restricted from relative rotation. 請求項１において、上記凸部はシャフトの被挟持面に設けられるとともに、上記凹部はヨークの挟持面に設けられ、
上記固定機構は、シャフトの頂部を押すことによりシャフトをＵ字状のヨーク底に向けて付勢するカム部を有し、
カム部によりシャフトが付勢されることにより、シャフトの被挟持面に設けられた凸部の壁面が、ヨークの対応する挟持面に設けられた凹部の壁面に押圧され、その結果、上記相対回転が規制されるようにしてある、自在継手のヨークとシャフトの結合構造。 In claim 1, the convex portion is provided on the sandwiched surface of the shaft, and the concave portion is provided on the sandwiching surface of the yoke.
The fixing mechanism has a cam portion that urges the shaft toward the U-shaped yoke bottom by pushing the top of the shaft.
When the shaft is urged by the cam portion, the wall surface of the convex portion provided on the sandwiched surface of the shaft is pressed against the wall surface of the concave portion provided on the corresponding sandwiching surface of the yoke. The joint structure of the universal joint yoke and shaft is designed to be regulated. 請求項１において、上記固定機構は、一対のタブを挿通するボルトと、ボルトに嵌合するナットとを含み、
上記凹部はシャフトの被挟持面に設けられ、
上記凸部はヨークの挟持面から突出する上記ナットの一部を含む、自在継手のヨークとシャフトの結合構造。 In Claim 1, the fixing mechanism includes a bolt that inserts a pair of tabs, and a nut that fits the bolt,
The recess is provided on the sandwiched surface of the shaft,
The joint of the yoke and shaft of the universal joint, wherein the convex part includes a part of the nut protruding from the clamping surface of the yoke.
JP2006129253A 2006-05-08 2006-05-08 Joining structure of yoke and shaft of universal joint Pending JP2007303480A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009204110A (en) * 2008-02-28 2009-09-10 Nsk Ltd Fastening structure of yoke and shaft of universal joint
US10143820B2 (en) 2014-12-12 2018-12-04 Dynasthetics, Llc System and method for delivery of variable oxygen flow
KR20180130275A (en) * 2017-05-29 2018-12-07 주식회사 한도 A yoke
US10159815B2 (en) 2014-12-12 2018-12-25 Dynasthetics, Llc System and method for detection of oxygen delivery failure
US11986592B2 (en) 2021-05-14 2024-05-21 Dynasthetics, Llc Electronic firebreak systems and methods for use with oxygen delivery device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009204110A (en) * 2008-02-28 2009-09-10 Nsk Ltd Fastening structure of yoke and shaft of universal joint
US10143820B2 (en) 2014-12-12 2018-12-04 Dynasthetics, Llc System and method for delivery of variable oxygen flow
US10159815B2 (en) 2014-12-12 2018-12-25 Dynasthetics, Llc System and method for detection of oxygen delivery failure
US10980965B2 (en) 2014-12-12 2021-04-20 Dynasthetics, Llc System and method for detection of oxygen delivery failure
US11638801B2 (en) 2014-12-12 2023-05-02 Dynasthetics, Llc System and method for delivery of variable oxygen flow
KR20180130275A (en) * 2017-05-29 2018-12-07 주식회사 한도 A yoke
KR101990860B1 (en) 2017-05-29 2019-06-19 주식회사 한도 A yoke
US11986592B2 (en) 2021-05-14 2024-05-21 Dynasthetics, Llc Electronic firebreak systems and methods for use with oxygen delivery device

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