JP2000320564A - Yoke of universal joint and manufacturer thereof - Google Patents
Yoke of universal joint and manufacturer thereofInfo
- Publication number
- JP2000320564A JP2000320564A JP11128844A JP12884499A JP2000320564A JP 2000320564 A JP2000320564 A JP 2000320564A JP 11128844 A JP11128844 A JP 11128844A JP 12884499 A JP12884499 A JP 12884499A JP 2000320564 A JP2000320564 A JP 2000320564A
- Authority
- JP
- Japan
- Prior art keywords
- pair
- yoke
- flange
- universal joint
- hole
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Steering Controls (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、例えば自動車の
ステアリング装置に組み込み、ハンドル軸の動きをステ
アリングギヤに伝達する為の自在継手を構成するヨーク
とその製造方法の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yoke which is incorporated in, for example, a steering device of an automobile and constitutes a universal joint for transmitting the movement of a handle shaft to a steering gear, and an improvement in a manufacturing method thereof.
【０００２】[0002]
【従来の技術】自動車のステアリング装置は、例えば図
１２に示す様に構成している。ステアリングホイール１
の動きは、ステアリングコラム２内に回転自在に設けた
ステアリングシャフト（図示省略）及び中間シャフト３
を介してステアリングギヤ４に伝達し、このステアリン
グギヤ４によって車輪を操舵する。上記ステアリングシ
ャフトとステアリングギヤ４の入力軸５とは、互いに同
一直線上に設ける事ができないのが通常である。この為
従来から、上記ステアリングシャフトと入力軸５の間に
中間シャフト３を設け、この中間シャフト３の両端部と
ステアリングシャフト及び入力軸５の端部とを、自在継
手６、６を介して結合する事により、同一直線上に存在
しないステアリングシャフトと入力軸５との間での、動
力伝達を行なえる様にしている。2. Description of the Related Art A steering apparatus of an automobile is constructed as shown in FIG. Steering wheel 1
The movement of the steering shaft (not shown) rotatably provided in the steering column 2 and the intermediate shaft 3
Through the steering gear 4, and the steering gear 4 steers the wheels. Usually, the steering shaft and the input shaft 5 of the steering gear 4 cannot be provided on the same straight line. Therefore, conventionally, an intermediate shaft 3 is provided between the steering shaft and the input shaft 5, and both ends of the intermediate shaft 3 and ends of the steering shaft and the input shaft 5 are connected via universal joints 6, 6. By doing so, power can be transmitted between the steering shaft and the input shaft 5 that do not exist on the same straight line.
【０００３】この様な動力伝達機構等に組み込む自在継
手６は従来から、図１３に示す様に、それぞれ二股状に
形成された第一、第二のヨーク７、８と、これら両ヨー
ク７、８同士を変位自在に結合する為の十字軸９とから
構成している。この様な自在継手のヨークとして従来か
ら、例えば特公平７−８８８５９号公報、特許第２５３
４７７２号公報、実用新案登録第２５０８５７５号公報
に記載されている様に、鋼板にプレス加工を施す事によ
り造るものが、低コストで造れる事から、広く使用され
ている。このうちの特公平７−８８８５９号公報及び実
用新案登録第２５０８５７５号公報に記載されたヨーク
は、ヨーク全体を１枚の金属板により構成している。こ
れに対して、特許第２５３４７７２号公報に記載された
ヨークは、十字軸を支持すべき１対の結合腕を有する先
端部と、シャフトの端部を結合すべき基部とを別々に造
り、後から溶接により結合している。Conventionally, a universal joint 6 incorporated in such a power transmission mechanism or the like has, as shown in FIG. 13, first and second yokes 7, 8 each formed in a forked shape, and both yokes 7, 8. And a cross shaft 9 for displaceably connecting the members 8 to each other. Conventionally, as a yoke of such a universal joint, for example, Japanese Patent Publication No. 7-88859, Patent No. 253
As described in Japanese Patent No. 4772 and Japanese Utility Model Registration No. 2508575, those manufactured by pressing a steel plate are widely used because they can be manufactured at low cost. Among them, the yokes described in Japanese Patent Publication No. Hei 7-88859 and Japanese Utility Model Registration No. 2508575 have the entire yoke made of one metal plate. On the other hand, the yoke described in Japanese Patent No. 2534772 has a tip portion having a pair of connecting arms for supporting the cross shaft and a base portion for connecting the end of the shaft, which are separately formed. Are joined by welding.
【０００４】[0004]
【発明が解決しようとする課題】特公平７−８８８５９
号公報及び実用新案登録第２５０８５７５号公報に記載
されている様に、１枚の金属板をプレス加工する事によ
り造ったヨークの場合、十字軸を支承する為の１対の結
合腕と、ヨークをシャフトの端部等に固定する為のボル
トにより緊締される１対のフランジ部との円周方向に関
する位相が一致していた。この為、使用条件によって
は、このフランジ部に設けた通孔にボルトを挿通する作
業が面倒になる等の問題がある。特許第２５３４７７２
号公報に記載されたヨークの場合には、１対の結合腕と
１対のフランジ部との円周方向に亙る位相を自由に調節
できる為、この様な問題がない代わりに、別々に造った
先端部と基部とを溶接により固定する為、製造作業が面
倒でコストが嵩む。本発明の自在継手のヨークとその製
造方法は、この様な事情に鑑みて発明したものである。[Problems to be Solved by the Invention] Japanese Patent Publication No. 7-88859
In the case of a yoke manufactured by pressing a single metal plate as described in Japanese Patent Application Publication No. 2508575 and Utility Model Registration No. 2508575, a pair of connecting arms for supporting a cross shaft and a yoke are provided. The phase in the circumferential direction coincides with the pair of flanges tightened by bolts for fixing the shaft to the end of the shaft or the like. For this reason, depending on the use conditions, there is a problem that the work of inserting the bolt into the through hole provided in the flange portion becomes troublesome. Patent No. 2534772
In the case of the yoke described in Japanese Patent Application Laid-Open Publication No. H11-107, the phase in the circumferential direction between the pair of connecting arms and the pair of flanges can be freely adjusted. Since the front end and the base are fixed by welding, the manufacturing operation is troublesome and the cost increases. The yoke of the universal joint and the method of manufacturing the same according to the present invention were invented in view of such circumstances.
【０００５】[0005]
【課題を解決するための手段】本発明の自在継手のヨー
クとその製造方法のうち、請求項１に記載した自在継手
のヨークは、前述した各公報に記載される等により従来
から知られている自在継手のヨークと同様に、金属板を
プレス成形する事で造られ、基端寄り部分に切り割を、
先端寄り部分に突き合わせ部を、内周面にセレーション
溝を、それぞれ有する円管状の結合筒部と、この結合筒
部の基端部に、上記切り割を挟んで上記結合筒部と一体
に設けられた１対のフランジ部と、一方のフランジ部に
フランジ面に対して直角方向に形成された螺子孔と、こ
の螺子孔に螺合するボルトを挿通する為、他方のフラン
ジ部に、上記螺子孔と同心に形成された通孔と、上記結
合筒部の先端縁の直径方向反対位置から連続して形成さ
れた１対の結合腕と、各結合腕の先端部にそれぞれ形成
された、互いに同心の円孔とから成る。特に、本発明の
自在継手のヨークに於いては、上記１対の結合腕の中間
に位置し、当該仮想平面に関してこれら１対の結合腕が
対称に存在する状態となる仮想平面を考えた場合に、上
記切り割の中心がこの仮想平面に対して円周方向にずれ
た位置に存在する。SUMMARY OF THE INVENTION Among the yokes of a universal joint and a method of manufacturing the same according to the present invention, the yoke of the universal joint according to the first aspect is known from the prior art as described in the aforementioned publications. Like a universal joint yoke, it is made by press-forming a metal plate.
A butting portion is provided at a portion close to the distal end, and a cylindrical coupling cylinder portion having a serration groove on an inner peripheral surface thereof, and a coupling cylinder portion provided integrally with the coupling cylinder portion at the base end portion of the coupling cylinder portion with the cut-off therebetween. A pair of flanges, a screw hole formed in one of the flanges at right angles to the flange surface, and a bolt screwed into the screw hole. A through-hole formed concentrically with the hole, a pair of connecting arms formed continuously from diametrically opposite positions of the distal end edge of the connecting cylindrical portion, and a pair of connecting arms formed at the distal end of each connecting arm. And concentric circular holes. In particular, in the yoke of the universal joint according to the present invention, considering a virtual plane located in the middle of the pair of connecting arms and in which the pair of connecting arms is symmetrically present with respect to the virtual plane. In addition, the center of the cut exists at a position shifted in the circumferential direction with respect to the virtual plane.
【０００６】又、請求項２に記載した自在継手のヨーク
の製造方法は、先ず、素材となる金属板を打ち抜き加工
する事により、結合筒部の基端寄り部分及び１対のフラ
ンジ部を構成する為の基端側板部の中心と、この結合筒
部の先端寄り部分及び１対の結合腕を構成する為の先端
側板部の中心とをずらせた中間素材を造る。そして、こ
の中間素材に曲げ加工を施して、上記基端側板部により
上記結合筒部の基端寄り部分及び１対のフランジ部を、
上記先端側板部により上記結合筒部の基端寄り部分及び
１対のフランジ部を、それぞれ構成する。According to a second aspect of the present invention, there is provided a method for manufacturing a yoke for a universal joint, wherein a metal plate as a raw material is punched to form a portion near a base end of a connecting cylinder portion and a pair of flange portions. Then, an intermediate material is produced in which the center of the base plate for shifting the center is shifted from the center of the tip side plate for forming the pair of connecting arms and the portion near the front end of the connecting cylinder. Then, the intermediate material is subjected to bending processing, and the base-side plate portion is used to form a portion near the base end of the coupling cylinder portion and a pair of flange portions,
The distal end side plate portion constitutes a portion near the base end of the coupling cylindrical portion and a pair of flange portions.
【０００７】[0007]
【作用】上述の様に構成する本発明の自在継手のヨーク
とその製造方法の場合には、１枚の金属板により一体に
構成する構造であって、しかも１対の結合腕と１対のフ
ランジ部との円周方向に関する位相を変える事により、
フランジ部に設けた通孔にボルトを挿通する作業を容易
に行なえる構造を実現できる。In the case of the universal joint yoke and the method of manufacturing the same according to the present invention as described above, the yoke has a structure integrally formed by a single metal plate, and has a pair of connecting arms and a pair of connecting arms. By changing the phase in the circumferential direction with the flange,
A structure can be realized in which the work of inserting a bolt through the through hole provided in the flange portion can be easily performed.
【０００８】[0008]
【発明の実施の形態】図１〜１１は、本発明の実施の形
態の１例を示している。先ず、図１〜４により、本発明
のヨーク１０の構造に就いて説明する。尚、図示の例
は、それぞれ１対ずつ設けたフランジ部１６、１７と結
合腕１２、１２との円周方向に亙る位相を、前述の特公
平７−８８８５９号公報及び実用新案登録第２５０８５
７５号公報に記載されている構造に対して９０度ずらせ
た場合に就いて示している。即ち、本例の構造の場合に
は、上記１対の結合腕１２、１２の中間に位置し、当該
仮想平面に関してこれら１対の結合腕１２、１２が対称
に存在する状態となる仮想平面（図３で紙面に対し直角
で左右方向に存在する平面）を、上記１対のフランジ部
１６、１７の中間に位置し、当該仮想平面に関してこれ
ら１対のフランジ部１６、１７が対称に存在する状態と
なる第二の仮想平面（図３で紙面に対し直角で上下方向
に存在する面）を、それぞれ考えた場合に、これら両仮
想平面同士が互いに直交する構造を有する。1 to 11 show an example of an embodiment of the present invention. First, the structure of the yoke 10 of the present invention will be described with reference to FIGS. In the illustrated example, the circumferential phase of the pair of flange portions 16 and 17 and the connecting arms 12 and 12 provided in pairs is determined by the aforementioned Japanese Patent Publication No. Hei 7-88859 and Utility Model Registration No. 25085.
This figure shows a case where the structure is shifted by 90 degrees from the structure described in Japanese Patent No. 75. That is, in the case of the structure of the present example, a virtual plane which is located in the middle of the pair of connecting arms 12 and 12 and in which the pair of connecting arms 12 and 12 exist symmetrically with respect to the virtual plane ( A plane perpendicular to the paper surface in FIG. 3 and located in the left-right direction) is positioned between the pair of flange portions 16 and 17, and the pair of flange portions 16 and 17 are symmetrical with respect to the virtual plane. When each of the second virtual planes (the planes that are perpendicular to the paper surface in FIG. 3 and is present in the vertical direction in FIG. 3) is considered, these two virtual planes have a structure orthogonal to each other.
【０００９】上記ヨーク１０は、炭素鋼板等、十分な剛
性を有する金属板をプレス成形する事で造られており、
円管状の結合筒部１１の先端部（図１〜２の右端部）
に、１対の結合腕１２、１２を一体に設けている。この
うちの結合筒部１１は、基端寄り部分（図１〜２の左寄
り部分）に切り割１３を形成し、この部分の内径を、弾
性的に縮められる様にしている。又、上記結合筒部１１
の先端寄り部分（図１〜２の右寄り部分）には切り割を
形成せず、円管状に丸めた金属板の端縁同士を互いに突
き合わせた突き合わせ部１４を形成しており、上記結合
筒部１１の内周面にはセレーション溝１５を設けてい
る。The yoke 10 is made by press-forming a metal plate having sufficient rigidity such as a carbon steel plate.
The tip of the cylindrical connecting cylinder 11 (right end in FIGS. 1 and 2)
, A pair of connecting arms 12 and 12 are provided integrally. The connecting cylindrical portion 11 is formed with a cut 13 at a portion near the base end (a portion near the left in FIGS. 1 and 2) so that the inner diameter of this portion can be elastically reduced. In addition, the coupling cylinder 11
A cut portion is not formed at a tip portion (a right portion in FIGS. 1 and 2) of the metal plate, but a butt portion 14 is formed in which ends of metal plates rounded into a circular tube are butted against each other. A serration groove 15 is provided on the inner peripheral surface of 11.
【００１０】更に、上記結合筒部１１の基端部には、上
記切り割１３を挟んで、１対のフランジ部１６、１７
を、この結合筒部１１と一体に設けている。これら各フ
ランジ部１６、１７は、この結合筒部１１を構成する金
属板の一部を１８０度折り返す事により、厚肉に形成し
ている。そして、このうちの一方（図３の左方）のフラ
ンジ部１６にねじ孔１８を、他方（図３の右方）のフラ
ンジ部１７に通孔１９を、それぞれのフランジ面に対し
て直角方向に設けている。これらねじ孔１８と通孔１９
とは、互いに同心に形成すると共に、通孔１９の内径を
ねじ孔１８の内径よりも十分に大きくして（但し、次述
するボルトの頭部よりは小径として）、上記通孔１９を
挿通したボルトの先端部を、上記ねじ孔１８に螺合させ
られる様にしている。Further, a pair of flange portions 16 and 17 are provided at the base end of the connecting cylinder portion 11 with the cut 13 interposed therebetween.
Are provided integrally with the coupling cylinder 11. Each of the flange portions 16 and 17 is formed to be thick by folding a part of the metal plate constituting the connecting cylinder portion 11 by 180 degrees. A screw hole 18 is formed in one of the flange portions 16 (the left side in FIG. 3), and a through hole 19 is formed in the other flange portion 17 (the right side in FIG. 3). Is provided. These screw holes 18 and through holes 19
Is formed concentrically with each other, and the inner diameter of the through hole 19 is made sufficiently larger than the inner diameter of the screw hole 18 (however, smaller than the head of the bolt described below), and the through hole 19 is inserted. The tip of the bolt is screwed into the screw hole 18.
【００１１】一方、上述の様に構成される結合筒部１１
の先端縁で、直径方向反対位置には、１対の結合腕１
２、１２を形成し、各結合腕１２、１２の先端部に、互
いに同心の円孔２０、２０を、それぞれ形成している。
自在継手を構成した状態で、これら各円孔２０、２０に
は、十字軸の端部を揺動自在に支持するシェル型ニード
ル軸受を構成する外輪（シエル）を内嵌固定する。On the other hand, the coupling cylinder 11 constructed as described above
A pair of connecting arms 1 is provided at the tip edge of
2 and 12 are formed, and circular holes 20 and 20 concentric with each other are formed at the tips of the coupling arms 12 and 12, respectively.
In the state where the universal joint is formed, an outer ring (shell) constituting a shell-type needle bearing that supports the end of the cross shaft so as to swing freely is fixedly fitted into each of the circular holes 20.
【００１２】特に、本発明のヨーク１０の場合には、前
述した様に、それぞれ１対ずつ設けたフランジ部１６、
１７と結合腕１２、１２との円周方向に亙る位相を、９
０度ずらせている。即ち、図示の例の場合には、上記１
対の結合腕１２、１２の中間に位置し、当該仮想平面に
関してこれら１対の結合腕１２、１２が対称に存在する
状態となる仮想平面が、図１の紙面に対し直角方向に、
図２の紙面方向に、それぞれ存在する。これに対して、
上記１対のフランジ部１６、１７の中間に位置し、当該
仮想平面に関してこれら１対のフランジ部１６、１７が
対称に存在する状態となる第二の仮想平面が、図１の紙
面方向に、図２の紙面に対し直角方向に、それぞれ存在
する。従って、これら両仮想平面同士が互いに直交す
る。In particular, in the case of the yoke 10 of the present invention, as described above, a pair of flange portions 16 are provided.
The phase in the circumferential direction between the connecting arm 17 and the connecting arms 12 and 12 is 9
It is shifted 0 degrees. That is, in the case of the example shown in FIG.
A virtual plane located in the middle of the pair of connecting arms 12, 12 and in which the pair of connecting arms 12, 12 exists symmetrically with respect to the virtual plane is perpendicular to the plane of FIG.
Each exists in the direction of the paper surface of FIG. On the contrary,
A second imaginary plane located in the middle of the pair of flanges 16 and 17 and in which the pair of flanges 16 and 17 is symmetrical with respect to the imaginary plane is in the direction of the paper surface of FIG. Each exists in a direction perpendicular to the plane of FIG. Therefore, these two virtual planes are orthogonal to each other.
【００１３】上述の様に構成する本発明のヨーク１０を
自在継手に組み付け、更にこのヨーク１０に中間シャフ
ト３（図１２）等の端部を結合する場合、この連結ロッ
ド３等の端部に形成したセレーション部を前記結合筒部
１１の内側に挿入した後、図示しないボルトを上記フラ
ンジ部１７に形成した通孔１９に、図３の右方から挿通
して、上記フランジ部１６に形成したねじ孔１８に螺合
し、更に緊締する。この結果、上記ヨーク１０と上記中
間シャフト３等の端部とが、しっかりと結合される。When the yoke 10 of the present invention constructed as described above is assembled to a universal joint, and the end of the intermediate shaft 3 (FIG. 12) is connected to the yoke 10, the end of the connecting rod 3 is connected to the end of the connecting rod 3. After the formed serrations were inserted into the inside of the coupling cylinder 11, bolts (not shown) were inserted into the through holes 19 formed in the flanges 17 from the right in FIG. Screw it into the screw hole 18 and tighten it further. As a result, the yoke 10 and the ends of the intermediate shaft 3 and the like are firmly connected.
【００１４】この状態で、上記ヨーク１０を介してトル
ク伝達が行なわれるが、このヨーク１０は、上記結合筒
部１１の先端寄り部分に突き合わせ部１４を設け、この
突き合わせ部１４により、１対の結合腕１２、１２に加
わる、捩り方向の力を支える様にしている。この為、捩
り方向の力に対する剛性を向上させる事ができ、自在継
手を組み込んだステアリング装置等の剛性感を向上させ
る事ができる。尚、突き合わせ部１４は、必要に応じて
溶接すれば、剛性をより向上させる事が可能である。In this state, torque transmission is performed via the yoke 10. In the yoke 10, a butting portion 14 is provided at a portion of the connecting cylinder portion 11 near the front end. The torsional force applied to the connecting arms 12, 12 is supported. For this reason, the rigidity with respect to the force in the torsional direction can be improved, and the rigidity of a steering device or the like incorporating the universal joint can be improved. The butt portion 14 can be further improved in rigidity by welding if necessary.
【００１５】特に、本発明のヨーク１０の場合には、１
枚の金属板により一体に構成する構造であって、しかも
上記１対の結合腕１２、１２と上記１対のフランジ部１
６、１７との円周方向に関する位相を（図示の例では９
０度）変えている。この為、前述の特公平７−８８８５
９号公報及び実用新案登録第２５０８５７５号公報に記
載されている様に、１対の結合腕と１対のフランジ部と
の円周方向に関する位相が一致している構造で、このフ
ランジ部に設けた通孔にボルトを挿通する作業が面倒に
なる様な使用条件下でも、上記フランジ部１７に設けた
通孔１９にボルトを挿通する作業を容易に行なえる。
又、上記１対の結合腕１２、１２と上記１対のフランジ
部１６、１７との円周方向に関する位相のずれの大きさ
は、９０度に限らず、０度を越えて９０度以下の範囲で
自由に調節できる。尚、９０度を越えて１８０度未満の
範囲は、ねじ孔１８と通孔１９との形成位置を逆にすれ
ば、０度を越えて９０度以下の場合と同様になる為、材
料の歩溜りと製造作業の能率化とを考えた場合に意味が
ない。In particular, in the case of the yoke 10 of the present invention, 1
A pair of connecting arms 12 and 12 and a pair of flanges 1
The phase in the circumferential direction with respect to 6 and 17 (in the illustrated example, 9
0 degrees) For this reason, the aforementioned Japanese Patent Publication No. 7-8885
No. 9 and Utility Model Registration No. 2508575, the pair of connecting arms and the pair of flanges have a structure in which the phases in the circumferential direction coincide with each other. The operation of inserting a bolt into the through hole 19 provided in the flange portion 17 can be easily performed even under use conditions in which the operation of inserting a bolt into the through hole becomes troublesome.
Further, the magnitude of the phase shift in the circumferential direction between the pair of coupling arms 12 and 12 and the pair of flange portions 16 and 17 is not limited to 90 degrees, but may be more than 0 degrees and 90 degrees or less. You can adjust freely in the range. The range of more than 90 degrees and less than 180 degrees is the same as the case of more than 0 degrees and less than 90 degrees by reversing the positions where the screw holes 18 and the through holes 19 are formed. There is no point in considering the accumulation and the efficiency of the manufacturing operation.
【００１６】次に、上述の様なヨーク１０の製造方法に
就いて、図５〜１１により説明する。尚、ヨーク１０と
して完成した状態での各部の名称に対応する符号は、上
述した図１〜４或は後述する図１１に記載したものを使
用する。先ず、素材となる炭素鋼板をプレスで打ち抜き
加工する事により、図５に示す様な第一中間素材２１を
形成する。この第一中間素材２１は、基端側板部２２と
先端側板部２３とから成る。このうちの基端側板部２２
は、上記ヨーク１０を構成する結合筒部１１の基端寄り
部分及び１対のフランジ部１６、１７を構成する為の部
分である。又、上記先端側板部２３は、上記結合筒部１
１の先端寄り部分及び１対の結合腕１２、１２を構成す
る為の部分である。Next, a method of manufacturing the yoke 10 as described above will be described with reference to FIGS. In addition, the code | symbol corresponding to the name of each part in the state which completed the yoke 10 uses the thing described in above-mentioned FIGS. 1-4 or FIG. 11 mentioned later. First, a first intermediate material 21 as shown in FIG. 5 is formed by punching a carbon steel plate as a material by a press. The first intermediate material 21 includes a base plate 22 and a distal plate 23. Base end plate 22 of these
Is a portion for forming the pair of flange portions 16 and 17 near the base end of the coupling cylindrical portion 11 constituting the yoke 10. Further, the distal end side plate portion 23 is connected to the coupling cylindrical portion 1.
It is a portion for forming one of the leading end portions and a pair of connecting arms 12.
【００１７】上記１対のフランジ部１６、１７を形成す
る為に、上記基端側板部２２の中間部の長さ方向両端寄
り部分の両側縁部の互いに整合する位置には、それぞれ
三角形状の切り欠き２４ａ、２４ｂを形成し、それぞれ
切り欠き２４ａ、２４ｂにより挟まれる部分を、幅が狭
いくびれ部２５、２５としている。又、これら各くびれ
部２５、２５よりも長さ方向両端に寄った部分は、同一
方向（｛図５（Ｂ）の下方｝に少し折り曲げて、折り曲
げ端部２６、２６としている。In order to form the pair of flange portions 16 and 17, triangular shaped portions are provided at positions where both side edges of the intermediate portion of the base end plate portion 22 near both ends in the longitudinal direction are aligned with each other. The notches 24a and 24b are formed, and the portions sandwiched by the notches 24a and 24b are narrowed narrow portions 25 and 25, respectively. In addition, portions that are closer to both ends in the length direction than the constricted portions 25, 25 are slightly bent in the same direction (downward in FIG. 5B) to be bent end portions 26, 26.
【００１８】又、上記先端側板部２３は、上記結合筒部
１１の先端寄り部分を構成する為の、長さ方向両端縁２
７、２７同士を互いに平行にした連続板部２８の端縁か
ら、前記１対の結合腕１２、１２を構成する為の１対の
舌状板部２９、２９を、兎の耳状に突出形成している。Further, the front end side plate portion 23 is provided with two end edges 2 in the longitudinal direction for forming a portion near the front end of the connecting cylindrical portion 11.
A pair of tongue-like plate portions 29, 29 for forming the pair of connecting arms 12, 12 project from the edge of a continuous plate portion 28 in which the members 7, 27 are made parallel to each other in the shape of a rabbit ear. Has formed.
【００１９】特に、本発明の製造方法を実施する場合に
は、図５（Ａ）に鎖線αで示した、上記基端側板部２２
の中心と、同じく鎖線βで示した先端側板部２３の中心
とを、これら各板部２２、２３の長さ方向に亙って、図
５（Ａ）の△Ｌ分だけずらせている（両板部２２、２３
を互いにオフセットしている）。この様なオフセット量
△Ｌは、１対の結合腕１２、１２と上記１対のフランジ
部１６、１７との円周方向に関する位相のずれの大きさ
に対応して決定する。又、上記基端側板部２２と上記先
端側板部２３とは、連結板部３０により、互いに連結し
ている。この連結板部３０の長さ寸法Ｌ30は、上記連続
板部２８の長さ寸法Ｌ28よりも小さく（Ｌ30＜Ｌ28）し
ている。In particular, when the manufacturing method of the present invention is carried out, the base plate 22 shown by a chain line α in FIG.
And the center of the tip side plate portion 23 also indicated by a chain line β is shifted by ΔL in FIG. 5A along the length direction of each of the plate portions 22 and 23 (both sides). Plate parts 22, 23
Are offset from each other). Such an offset amount ΔL is determined according to the magnitude of the phase shift in the circumferential direction between the pair of connecting arms 12 and 12 and the pair of flange portions 16 and 17. The base plate 22 and the distal plate 23 are connected to each other by a connecting plate 30. Length L 30 of the connecting plate portion 30 is smaller (L 30 <L 28) than the length L 28 of the continuous plate section 28.
【００２０】上述の様な第一中間素材２１は、上記基端
側板部２２の両端部を、それぞれ前記各くびれ部２５、
２５部分で、図６〜７に示す様な順で、上記第一中間素
材２１の表裏方向に関して同方向に、密に（極く小さな
曲率半径で）１８０度折り返す事により、図８に示す様
な第二中間素材３１とする。この第二中間素材３１は、
上記基端側板部２２の長さ方向両端部に、素材となる金
属板２枚分の厚さを有する折り返し部３２ａ、３２ｂを
形成したものである。尚、この様な第二中間素材３１を
形成した状態で、上述の第一中間素材２１の基端側板部
２２の長さ方向両端部に形成した前記折り曲げ端部２
６、２６は、直線状に延ばされて、上記各折り返し部３
２ａ、３２ｂを構成する金属板の内周側面同士が、折り
返しの中心部を除いて互いに密接する。In the first intermediate material 21 as described above, both ends of the base-side plate portion 22 are connected to the constricted portions 25, respectively.
At the 25th portion, in the order shown in FIGS. 6 and 7, the first intermediate material 21 is folded 180 degrees in the same direction (with a very small radius of curvature) in the same direction with respect to the front and back sides, as shown in FIG. The second intermediate material 31. This second intermediate material 31
Folded portions 32a and 32b having a thickness of two metal plates as a material are formed at both ends in the longitudinal direction of the base-side plate portion 22. In the state where such a second intermediate material 31 is formed, the bent end portions 2 formed at both ends in the longitudinal direction of the base end plate portion 22 of the first intermediate material 21 described above.
6, 26 are linearly extended, and each of the folded portions 3
The inner peripheral side surfaces of the metal plates constituting 2a and 32b are in close contact with each other except for the center of the turn.
【００２１】続いて上述の様な第二中間素材３１のうち
の舌状板部２９、２９をプレスにより断面円弧状に塑性
変形させて、図９に示す様な第三中間素材３３とする。
この第三中間素材３３には、円孔２０、２０が形成され
ていない以外は、完成品のヨーク１０が備えているのと
同様の、結合腕１２、１２が設けられている。Subsequently, the tongue-shaped plate portions 29 of the second intermediate material 31 are plastically deformed into an arc shape in cross section by a press to form a third intermediate material 33 as shown in FIG.
This third intermediate material 33 is provided with connecting arms 12, 12 similar to those provided in the finished yoke 10, except that the circular holes 20, 20 are not formed.
【００２２】続いて、上述の様な第三中間素材３３の基
端側板部２２を、図１０に示す工程を経て図１１に示す
状態にまで、Ｕ字形に１８０度折り返す事により、図１
１に示す様な第四中間素材３４とする。この工程では、
同時に上記連続板部２８を円筒状に丸める成形を施し、
端縁２７、２７同士を互いに近づけ合って、突き合わせ
部１４を構成する。上記第四中間素材３４は、上記各結
合腕１２、１２の先端部に円孔２０、２０が、フランジ
部１６、１７にねじ孔１８及び通孔１９が、それぞれ形
成されていない以外は、完成品のヨーク１０と同様の構
成を有する。そこで、この様な第四中間素材３４を構成
する上記各結合腕１２、１２の先端部分に、ボール盤等
を使用した切削加工、或はプレスによる打ち抜き加工等
の穿孔加工を施す事により上記各円孔２０、２０を形成
する。又、上記各フランジ部１６、１７に、切削加工及
びタップ加工により、上記ねじ孔１８及び通孔１９を形
成する。そして、更に必要な座ぐり加工等に施して、前
述の図１〜４に示す様なヨーク１０とする。尚、本発明
を実施する場合に、上記各フランジ部１６、１７を肉厚
にするのは、素材となる金属板を図示の様に互いに密に
重ね合わせる構造の他、前述の特許第２５３４７２２号
公報等に記載されている様に、肉寄せにより肉厚を確保
した、１枚構造の中のでも良い。Subsequently, the base plate 22 of the third intermediate material 33 as described above is folded back in a U-shape by 180 degrees through the process shown in FIG. 10 to the state shown in FIG.
A fourth intermediate material 34 as shown in FIG. In this process,
At the same time, the continuous plate portion 28 is formed into a cylindrical shape by rounding,
The butting portions 14 are configured by bringing the edges 27, 27 closer to each other. The fourth intermediate material 34 is completed except that circular holes 20, 20 are not formed at the distal ends of the connecting arms 12, 12, and screw holes 18 and through holes 19 are not formed at the flange portions 16, 17, respectively. It has the same configuration as the product yoke 10. Therefore, the tip of each of the connecting arms 12 constituting the fourth intermediate material 34 is subjected to a cutting process using a drilling machine or the like or a punching process such as a punching process using a press to perform the above-described circles. The holes 20, 20 are formed. The screw holes 18 and the through holes 19 are formed in the flange portions 16 and 17 by cutting and tapping. Then, the yoke 10 as shown in FIGS. In practicing the present invention, the thickness of each of the flange portions 16 and 17 is increased by a structure in which metal plates serving as raw materials are closely overlapped with each other as shown in FIG. As described in a gazette or the like, a single-sheet structure in which the thickness is ensured by a meat approach may be used.
【００２３】[0023]
【発明の効果】本発明の自在継手のヨークとその製造方
法は、以上に述べた通り構成され作用するので、シャフ
ト同士の間等への組み付け作業が容易で、しかも安価な
自在継手の実現に寄与できる。The yoke of the universal joint and the method of manufacturing the same according to the present invention are constructed and operated as described above, so that the assembling work between the shafts and the like is easy and the inexpensive universal joint is realized. Can contribute.
【図１】本発明の実施の形態の１例を示す、完成したヨ
ークの部分切断側面図。FIG. 1 is a partially cut-away side view of a completed yoke, showing an example of an embodiment of the present invention.
【図２】図１の上方から見た図。FIG. 2 is a view as seen from above in FIG. 1;
【図３】図１のＡ−Ａ断面図。FIG. 3 is a sectional view taken along line AA of FIG. 1;
【図４】同Ｂ−Ｂ断面図。FIG. 4 is a sectional view taken along the line BB in FIG.
【図５】第一中間素材を示しており、（Ａ）は平面図、
（Ｂ）は（Ａ）の下方から見た図。FIG. 5 shows a first intermediate material, (A) is a plan view,
(B) is a diagram viewed from below (A).
【図６】第一中間素材を第二中間素材に加工する途中の
状態を示しており、（Ａ）は平面図、（Ｂ）は（Ａ）の
下方から見た図。FIGS. 6A and 6B show a state in which a first intermediate material is being processed into a second intermediate material, wherein FIG. 6A is a plan view and FIG. 6B is a view as seen from below FIG.
【図７】図６に続く工程を示しており、（Ａ）は平面
図、（Ｂ）は（Ａ）の下方から見た図。7A and 7B show steps subsequent to FIG. 6, wherein FIG. 7A is a plan view and FIG. 7B is a view seen from below (A).
【図８】第二中間素材を示しており、（Ａ）は平面図、
（Ｂ）は（Ａ）の下方から見た図。FIG. 8 shows a second intermediate material, (A) is a plan view,
(B) is a diagram viewed from below (A).
【図９】第三中間素材を示しており、（Ａ）は平面図、
（Ｂ）は（Ａ）の下方から見た図。FIG. 9 shows a third intermediate material, (A) is a plan view,
(B) is a diagram viewed from below (A).
【図１０】第三中間素材を第四中間素材に加工する途中
の状態を示しており、（Ａ）は平面図、（Ｂ）は（Ａ）
の下方から見た図。10A and 10B show a state in which a third intermediate material is being processed into a fourth intermediate material, wherein FIG. 10A is a plan view and FIG.
FIG.
【図１１】第四中間素材を示しており、（Ａ）は図１同
方向から見た側面図、（Ｂ）は（Ａ）の左方から見た
図、（Ｃ）は（Ｂ）の下方から見た図。11A and 11B show a fourth intermediate material, wherein FIG. 11A is a side view seen from the same direction in FIG. 1, FIG. 11B is a view seen from the left side of FIG. FIG.
【図１２】自在継手を組み込んだステアリング装置の斜
視図。FIG. 12 is a perspective view of a steering device incorporating a universal joint.
【図１３】図１２の拡大Ｘ矢視図。FIG. 13 is an enlarged view taken in the direction of the arrow X in FIG. 12;
１ ステアリングホイール ２ ステアリングコラム ３ 中間シャフト ４ ステアリングギヤ ５ 入力軸 ６ 自在継手 ７ 第一のヨーク ８ 第二のヨーク ９ 十字軸 １０ ヨーク １１ 結合筒部 １２ 結合腕 １３ 切り割 １４ 突き合わせ部 １５ セレーション溝 １６ フランジ部 １７ フランジ部 １８ ねじ孔 １９ 通孔 ２０ 円孔 ２１ 第一中間素材 ２２ 基端側板部 ２３ 先端側板部 ２４ａ、２４ｂ 切り欠き ２５ くびれ部 ２６ 折り曲げ端部 ２７ 端縁 ２８ 連続板部 ２９ 舌状板部 ３０ 連結板部 ３１ 第二中間素材 ３２ａ、３２ｂ 折り返し部 ３３ 第三中間素材 ３４ 第四中間素材 DESCRIPTION OF SYMBOLS 1 Steering wheel 2 Steering column 3 Intermediate shaft 4 Steering gear 5 Input shaft 6 Universal joint 7 First yoke 8 Second yoke 9 Cross shaft 10 Yoke 11 Coupling cylinder 12 Coupling arm 13 Cut 14 Butt portion 15 Serration groove 16 Flange part 17 Flange part 18 Screw hole 19 Through hole 20 Circular hole 21 First intermediate material 22 Base end side plate part 23 Front end side plate part 24a, 24b Notch 25 Constriction part 26 Bend end part 27 End edge 28 Continuous plate part 29 Tongue shape Plate part 30 Connecting plate part 31 Second intermediate material 32a, 32b Folded part 33 Third intermediate material 34 Fourth intermediate material
Claims (2)
端寄り部分に切り割を、先端寄り部分に突き合わせ部
を、内周面にセレーション溝を、それぞれ有する円管状
の結合筒部と、この結合筒部の基端部に、上記切り割を
挟んで上記結合筒部と一体に設けられた１対のフランジ
部と、一方のフランジ部にフランジ面に対して直角方向
に形成された螺子孔と、この螺子孔に螺合するボルトを
挿通する為、他方のフランジ部に、上記螺子孔と同心に
形成された通孔と、上記結合筒部の先端縁の直径方向反
対位置から連続して形成された１対の結合腕と、各結合
腕の先端部にそれぞれ形成された、互いに同心の円孔と
から成る自在継手のヨークに於いて、上記１対の結合腕
の中間に位置し、当該仮想平面に関してこれら１対の結
合腕が対称に存在する状態となる仮想平面を考えた場合
に、上記切り割の中心がこの仮想平面に対して円周方向
にずれた位置に存在する事を特徴とする自在継手のヨー
ク。1. A cylindrical connecting cylinder portion formed by press-forming a metal plate, having a cut at a base end portion, a butt portion at a tip end portion, and a serration groove on an inner peripheral surface. A pair of flange portions provided integrally with the connecting cylinder portion with the cut portion interposed therebetween at a base end portion of the connecting cylinder portion, and one flange portion formed in a direction perpendicular to the flange surface. In order to insert a screw hole and a bolt to be screwed into this screw hole, the other flange portion is continuously formed with a through hole formed concentrically with the screw hole from a position opposite to the diametrical end of the distal end edge of the coupling cylinder portion. A yoke of a universal joint comprising a pair of connecting arms formed as described above and circular holes concentric with each other formed at the distal end of each connecting arm. And the pair of connecting arms exists symmetrically with respect to the virtual plane. A yoke for a universal joint, characterized in that the center of the cut exists in a position displaced in the circumferential direction with respect to the virtual plane when a virtual plane in a state is considered.
製造方法であって、素材となる金属板を打ち抜き加工す
る事により、結合筒部の基端寄り部分及び１対のフラン
ジ部を構成する為の基端側板部の中心と、この結合筒部
の先端寄り部分及び１対の結合腕を構成する為の先端側
板部の中心とをずらせた中間素材を造り、この中間素材
に曲げ加工を施して、上記基端側板部により上記結合筒
部の基端寄り部分及び１対のフランジ部を、上記先端側
板部により上記結合筒部の基端寄り部分及び１対のフラ
ンジ部を、それぞれ構成する、自在継手のヨークの製造
方法。2. A method for manufacturing a yoke for a universal joint according to claim 1, wherein a portion near the base end of the connecting cylinder portion and a pair of flange portions are formed by punching a metal plate as a raw material. To make the center of the base side plate part to perform, and the center of the tip side plate part to constitute the pair of connecting arms and the part near the front end of this connecting cylinder part, and to bend this intermediate material By applying the base-side plate portion to the proximal end portion of the coupling cylinder portion and a pair of flange portions, the distal-side plate portion to the proximal end portion of the coupling cylinder portion and a pair of flange portions, respectively. A method of manufacturing a yoke of a universal joint to constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11128844A JP2000320564A (en) | 1999-05-10 | 1999-05-10 | Yoke of universal joint and manufacturer thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11128844A JP2000320564A (en) | 1999-05-10 | 1999-05-10 | Yoke of universal joint and manufacturer thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000320564A true JP2000320564A (en) | 2000-11-24 |
Family
ID=14994793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11128844A Pending JP2000320564A (en) | 1999-05-10 | 1999-05-10 | Yoke of universal joint and manufacturer thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000320564A (en) |
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| JP2009534603A (en) * | 2006-04-19 | 2009-09-24 | ゼットエフ システム ドゥ ディレクション ナカム，エス．アー．エス． | Stamped yoke member with cardan joint for automotive steering column |
| JP2010190404A (en) * | 2009-02-20 | 2010-09-02 | Nsk Ltd | Universal joint and machining method for the same |
| WO2011102212A1 (en) | 2010-02-17 | 2011-08-25 | 日本精工株式会社 | Joint cross type universal joint yoke and method of manufacturing same |
| JP2011220398A (en) * | 2010-04-07 | 2011-11-04 | Nsk Ltd | Yoke for cross-type universal joint and method of manufacturing the same |
| WO2015174433A1 (en) * | 2014-05-15 | 2015-11-19 | 日本精工株式会社 | Joint cross-type universal joint yoke |
| WO2015174432A1 (en) * | 2014-05-13 | 2015-11-19 | 日本精工株式会社 | Joint cross-type universal joint yoke and manufacturing method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009534603A (en) * | 2006-04-19 | 2009-09-24 | ゼットエフ システム ドゥ ディレクション ナカム，エス．アー．エス． | Stamped yoke member with cardan joint for automotive steering column |
| JP2010190404A (en) * | 2009-02-20 | 2010-09-02 | Nsk Ltd | Universal joint and machining method for the same |
| WO2011102212A1 (en) | 2010-02-17 | 2011-08-25 | 日本精工株式会社 | Joint cross type universal joint yoke and method of manufacturing same |
| US8845438B2 (en) | 2010-02-17 | 2014-09-30 | Nsk Ltd. | Yoke for a cross type universal joint and manufacturing method thereof |
| JP2011220398A (en) * | 2010-04-07 | 2011-11-04 | Nsk Ltd | Yoke for cross-type universal joint and method of manufacturing the same |
| WO2015174432A1 (en) * | 2014-05-13 | 2015-11-19 | 日本精工株式会社 | Joint cross-type universal joint yoke and manufacturing method therefor |
| CN106233014A (en) * | 2014-05-13 | 2016-12-14 | 日本精工株式会社 | Universal-joint-pin type universal joint fork yoke and manufacture method thereof |
| JPWO2015174432A1 (en) * | 2014-05-13 | 2017-04-20 | 日本精工株式会社 | Yoke for cross shaft type universal joint and method for manufacturing the same |
| US10156267B2 (en) | 2014-05-13 | 2018-12-18 | Nsk Ltd. | Yoke for cross shaft universal joint and method for manufacturing the same |
| CN106233014B (en) * | 2014-05-13 | 2019-08-23 | 日本精工株式会社 | Universal-joint-pin type universal connector fork yoke and its manufacturing method |
| WO2015174433A1 (en) * | 2014-05-15 | 2015-11-19 | 日本精工株式会社 | Joint cross-type universal joint yoke |
| US10119575B2 (en) | 2014-05-15 | 2018-11-06 | Nsk Ltd. | Yoke for cross shaft universal joint |
| EP3249253A1 (en) * | 2016-05-18 | 2017-11-29 | Jtekt Corporation | Universal joint yoke and intermediate shaft |
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