JPH053652U - Universal yoke - Google Patents
Universal yokeInfo
- Publication number
- JPH053652U JPH053652U JP5798791U JP5798791U JPH053652U JP H053652 U JPH053652 U JP H053652U JP 5798791 U JP5798791 U JP 5798791U JP 5798791 U JP5798791 U JP 5798791U JP H053652 U JPH053652 U JP H053652U
- Authority
- JP
- Japan
- Prior art keywords
- yoke
- outer peripheral
- coupling
- peripheral surface
- universal joint
- 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.)
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Abstract
(57)【要約】
【目的】切削加工等の機械加工を要せず、塑性加工のみ
で、他のヨークと干渉しないヨークを造る。
【構成】ヨーク１４は金属材料を塑性加工する事により
一体に造る。このヨーク１４は、軸の端部に結合自在な
結合筒部１９を基端部に設け、この結合筒部１９の先端
縁に１対の結合腕１５を一体に設けている。前記１対の
結合腕１５の外周面側先端縁部周方向両側部分に、各結
合腕１５の外周面３６よりも凹んだ凹部３５、３５を設
けている。又、各凹部３５、３５と前記結合腕１５の外
周面３６とを、結合腕１５の外周縁に向かう程凹部３
５、３５に近付く方向に傾斜した傾斜面３７、３７によ
り連続させている。凹部３５、３５よりも先端部分の寸
法はラフでも、この部分が他のヨークと干渉する事はな
い。
(57) [Abstract] [Purpose] To make a yoke that does not interfere with other yokes by only plastic working without the need for machining such as cutting. [Structure] The yoke 14 is integrally formed by plastically processing a metal material. The yoke 14 is provided with a coupling cylinder portion 19 that can be coupled to the end portion of the shaft at the base end portion, and a pair of coupling arms 15 is integrally provided at the tip edge of the coupling cylinder portion 19. Recesses 35, 35, which are recessed from the outer peripheral surface 36 of each coupling arm 15, are provided at both outer peripheral surface side end edge circumferential portions of the pair of coupling arms 15. Further, the recesses 35, 35 and the outer peripheral surface 36 of the connecting arm 15 are recessed toward the outer peripheral edge of the connecting arm 15.
5 and 35 are made continuous by inclined surfaces 37 and 37 that are inclined in the direction of approaching. Even if the size of the tip portion is rougher than that of the concave portions 35, 35, this portion does not interfere with other yokes.
Description
【０００１】[0001]
この考案に係る自在継手のヨークは、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 ヨークとして利用する。 The yoke of the universal joint according to the present invention is incorporated in, for example, a steering device of an automobile, and is used as a yoke forming a universal joint for transmitting the movement of the handle shaft to a steering gear.
【０００２】[0002]
自動車のステアリング装置は、例えば図１２に示す様に構成されている。この 図１２に於いて、１はステアリングホイールで、このステアリングホイール１の 動きを、ハンドル軸２、連結ロッド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様にしている。 A steering device for an automobile is configured, for example, as shown in FIG. In FIG. 12, reference numeral 1 denotes a steering wheel, which transmits the movement of the steering wheel 1 to a steering gear 4 via a handle shaft 2 and a connecting rod 3 so that the steering gear 4 steers the wheels. ing.
【０００３】 ところで、前記ハンドル軸２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出来ないのが通常である。この為従来から、前記両軸２、 ５の間に連結ロッド３を設け、この連結ロッド３の両端部とハンドル軸２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 在しないハンドル軸２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 。Incidentally, the handle shaft 2 and the input shaft 5 of the steering gear 4 cannot normally be provided on the same straight line. Therefore, conventionally, a connecting rod 3 is provided between the shafts 2 and 5, and both ends of the connecting rod 3 and the ends of the handle shaft 2 and the input shaft 5 are connected via universal joints 6 and 6. By connecting them, power can be transmitted between the handle shaft 2 and the input shaft 5, which do not exist on the same straight line.
【０００４】 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１対のヨーク７、８と、両ヨーク７、８同士を変 位自在に結合する為の十字軸９とから構成されている。各ヨーク７、８は、十分 な剛性を得られる様に、例えば１枚の厚肉の金属板をプレス成形する事で造られ ている。そして、各ヨーク７、８には、連結ロッド３等の軸の端部に結合自在な 結合筒部を基端部に設けると共に、この結合筒部の先端縁に１対の結合腕１０、 １０を、前記結合筒部と一体に設けている。As shown in FIG. 13, the universal joint 6 incorporated in such a power transmission mechanism has a pair of yokes 7 and 8 each formed in a bifurcated shape, and the two yokes 7 and 8 are changed. It is composed of a cross shaft 9 for freely connecting. Each of the yokes 7 and 8 is manufactured by press-molding, for example, one thick metal plate so as to obtain sufficient rigidity. Then, each of the yokes 7 and 8 is provided with a coupling cylinder portion that can be coupled to the end portion of the shaft of the coupling rod 3 or the like at the base end portion, and a pair of coupling arms 10 and 10 is provided at the tip edge of the coupling cylinder portion. Is integrally provided with the coupling cylinder portion.
【０００５】 前記１対の結合腕１０、１０の先端部にはそれぞれ、本考案の実施例を示す図 １〜４、６、１１図に示す様に、互いに同心の円孔１１を形成し、各円孔１１の 内側に転がり軸受１２（図１１参照）を介して、前記十字軸９の端部を回転自在 に支承している。As shown in FIGS. 1 to 4, 6 and 11 showing an embodiment of the present invention, circular holes 11 are formed concentrically at the distal ends of the pair of coupling arms 10 and 10, respectively. The end of the cross shaft 9 is rotatably supported inside the circular holes 11 via rolling bearings 12 (see FIG. 11).
【０００６】 ところで、前述の様に、自動車のステアリング装置に組み込まれた状態で使用 される自在継手として、車輪側から連結ロッド３に伝わった振動が、ハンドル軸 ２に迄伝達されるのを防止する、防振型の自在継手がある。この防振型の自在継 手の構造に就いて、本考案の実施例を示す図１１により説明する。By the way, as described above, as a universal joint used in a state where it is incorporated in a steering device of an automobile, vibration transmitted from the wheel side to the connecting rod 3 is prevented from being transmitted to the handle shaft 2. There is a vibration-proof universal joint. The structure of this vibration-proof type universal joint will be described with reference to FIG. 11 showing an embodiment of the present invention.
【０００７】 この防振型の自在継手１３は、１対のヨーク７、１４を十字軸９を介して連結 する事により構成されており、各ヨーク７、１４の結合腕１０、１５の先端部に 形成した円孔１１の内側に前記十字軸９の端部を、転がり軸受１２を介して、回 転自在に支承している。前記１対のヨーク７、１４の内、一方（図１１の右方） のヨーク７は、前記図１３に示した自在継手６のヨークと同様に、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いる。The vibration-proof type universal joint 13 is configured by connecting a pair of yokes 7 and 14 via a cross shaft 9, and the tip ends of the connecting arms 10 and 15 of the yokes 7 and 14, respectively. The end portion of the cross shaft 9 is rotatably supported by a rolling bearing 12 inside the circular hole 11 formed in. Of the pair of yokes 7 and 14, one (right side in FIG. 11) of the yoke 7 is a metal plate having sufficient rigidity, such as a carbon steel plate, like the yoke of the universal joint 6 shown in FIG. It is made by press molding.
【０００８】 又、他方（図１１の左方）のヨーク１４は、ピン１６とゴムブッシュ１７とを 介して、軸筒１８の端部に、若干の変位自在に支持される。即ち、前記他方のヨ ーク１４は、アルミニウム合金等の金属材料に鍛造加工を施す事により構成され るもので、円筒形の結合筒部１９と、この結合筒部１９の端縁から軸方向に延出 する１対の結合腕１５、１５とを有する。The other yoke 14 (on the left side in FIG. 11) is supported by the end of the barrel 18 via the pin 16 and the rubber bush 17 so as to be slightly displaceable. That is, the other yoke 14 is formed by forging a metal material such as an aluminum alloy, and has a cylindrical connecting cylinder portion 19 and an axial direction from the end edge of the connecting cylinder portion 19. And a pair of connecting arms 15 and 15 extending to.
【０００９】 この内、結合筒部１９の直径方向反対側の２箇所位置には、前記ピン１６の両 端部を遊合させる為、このピン１６の両端部の外径寸法よりも大きな内径寸法を 有する、円孔２０が形成されている。前記ゴムブッシュ１７の内外両周面には、 ぞれぞれスリーブ２１、２２を、焼き付け等により固定している。又、前記ゴム ブッシュ１７と外周面側のスリーブ２２との一部で、前記円孔２０と整合する位 置には、この円孔２０とほぼ同径の円孔２３、２４を形成し、内周面側のスリー ブ２１の一部で、前記円孔２０と整合する位置には、前記ピン１６の端部をがた つきなく挿通出来るだけの内径を有する、円孔２５を形成している。Of these, at both positions on the diametrically opposite side of the coupling cylinder portion 19, both ends of the pin 16 are loosely engaged, so that the inner diameter dimension larger than the outer diameter dimension of both ends of the pin 16. A circular hole 20 is formed. Sleeves 21 and 22 are fixed to the inner and outer peripheral surfaces of the rubber bush 17 by baking or the like. Further, circular holes 23 and 24 having substantially the same diameter as the circular hole 20 are formed in a part of the rubber bush 17 and a part of the sleeve 22 on the outer peripheral surface side so as to be aligned with the circular hole 20. A circular hole 25 having an inner diameter that allows the end of the pin 16 to be inserted without rattling is formed at a position aligned with the circular hole 20 in a part of the sleeve 21 on the peripheral surface side. ..
【００１０】 そして、前記１対のスリーブ２１、２２の内、内周面側のスリーブ２１を前記 軸筒１８の端部外周面に外嵌固定し、外周面側のスリーブ２２を前記結合筒部１ ９の端部内周面に内嵌固定する事で、前記軸筒１８と結合筒部１９とを、緩衝的 に結合している。軸筒１８と結合筒部１９とを、この様にゴムブッシュ１７を介 して結合する事により、車輪から連結ロッド３を介して軸筒１８に迄伝わった振 動が、前記ゴムブッシュ１７により吸収され、前記結合筒部１９に迄伝達される 事がなくなる。Then, of the pair of sleeves 21 and 22, the sleeve 21 on the inner peripheral surface side is externally fitted and fixed to the outer peripheral surface of the end portion of the shaft cylinder 18, and the sleeve 22 on the outer peripheral surface side is fixed to the coupling cylindrical portion. The shaft cylinder 18 and the coupling cylinder portion 19 are buffer-coupled by being internally fitted and fixed to the inner peripheral surface of the end portion of 19. By connecting the shaft cylinder 18 and the coupling cylinder portion 19 via the rubber bush 17 in this way, the vibration transmitted from the wheel to the shaft cylinder 18 via the connecting rod 3 is transmitted to the shaft cylinder 18 by the rubber bush 17. It is absorbed and is not transmitted to the connecting cylinder portion 19.
【００１１】 ステアリングホイール１の操作時には、前記ゴムブッシュ１７を介してハンド ル軸２の動きを連結ロッド３に伝達するが、ハンドル軸２に大きな回転トルクが 加わった場合には、前記ピン１６の先端部外周面が結合筒部１９の円孔２０の内 周面に衝合し、前記ゴムブッシュ１７に無理な力が加わるのを防止する。When the steering wheel 1 is operated, the movement of the handle shaft 2 is transmitted to the connecting rod 3 through the rubber bush 17, but when a large rotational torque is applied to the handle shaft 2, the pin 16 of the pin 16 is moved. The outer peripheral surface of the tip portion abuts against the inner peripheral surface of the circular hole 20 of the coupling cylinder portion 19 to prevent an unreasonable force from being applied to the rubber bush 17.
【００１２】 上述の様に構成され作用する防振型の自在継手を構成する１対のヨーク７、１ ４の内、防振機構を組み込むヨーク１４は、例えば特公平２−５９０１４号公報 に記載されている様に、アルミニウム合金等の金属材料に鍛造加工を施す事によ り造られるが、この鍛造加工は、例えば図１４〜１７に示す様にして行なう。Among the pair of yokes 7, 14 constituting the vibration-proof type universal joint configured and functioning as described above, the yoke 14 incorporating the vibration-proof mechanism is described in, for example, Japanese Patent Publication No. 2-59014. As described above, it is manufactured by subjecting a metal material such as an aluminum alloy to a forging process. The forging process is performed, for example, as shown in FIGS.
【００１３】 先ず、加工の第一段階として図１４〜１５に示す様に、囲み型２６の円筒孔２ ７内に金属材料２８を投入し、第一の上型２９と下型３０との間で、この金属材 料２８を押圧する。前記第一の上型２９は前記円筒孔２７の内側に、隙間なく押 し込まれ、しかも前記下型３０には、前記結合腕１５、１５（図１１）に相当す る凹部３１、３１が設けられている為、この第一段階で、前記結合腕１５、１５ が形成される。First, as a first step of processing, as shown in FIGS. 14 to 15, a metal material 28 is put into the cylindrical hole 27 of the surrounding die 26, and the metal material 28 is placed between the first upper die 29 and the lower die 30. Then, the metal material 28 is pressed. The first upper mold 29 is pressed into the cylindrical hole 27 without any gap, and the lower mold 30 has recesses 31 and 31 corresponding to the connecting arms 15 and 15 (FIG. 11). Since they are provided, the connecting arms 15 and 15 are formed in this first step.
【００１４】 第一段階の終了後、加工の第二段階として図１６〜１７に示す様に、前記金属 材料２８の上面に、第二の上型３２を押し付ける。この第二段階の作業は、第一 段階と同じ円筒孔２７の内側で行なっても、或は（金属材料２８を移し替えて） 別の円筒孔２７の内側で行なっても良い。前記第二の上型３２の外径は、円筒孔 ２７の内径よりも十分に小さく、しかも第二の上型３２と円筒孔２７とを同心に 保持した状態のまま、この第二の上型３２を金属材料２８に押し付ける為、この 金属材料２８の上部に、結合筒部１９が形成され、ヨーク１４（図１１）を造る 為の素材３３となる。After the completion of the first step, as the second step of processing, as shown in FIGS. 16 to 17, the second upper mold 32 is pressed against the upper surface of the metal material 28. This second stage operation may be performed inside the same cylindrical hole 27 as in the first stage, or inside another cylindrical hole 27 (by transferring the metal material 28). The outer diameter of the second upper mold 32 is sufficiently smaller than the inner diameter of the cylindrical hole 27, and the second upper mold 32 is kept concentric with the second upper mold 32. Since 32 is pressed against the metal material 28, the coupling cylinder portion 19 is formed on the upper portion of the metal material 28, and becomes the material 33 for forming the yoke 14 (FIG. 11).
【００１５】 この様にして造られた素材３３は、突き出しピン３４を上昇させる事によって 、前記円筒孔２７の内側から取り出される。そして、次の加工工程に送られて、 ボール盤等による機械加工によって前記各円孔１１、２０を穿設され、ヨーク１ ４として完成する。The material 33 manufactured in this manner is taken out from the inside of the cylindrical hole 27 by raising the protrusion pin 34. Then, it is sent to the next processing step, and the circular holes 11 and 20 are bored by machining with a drilling machine or the like to complete the yoke 14.
【００１６】[0016]
ところが、上述の様にしてヨーク１４を造る場合、次に述べる様な問題を生じ る。即ち、ヨーク１４の結合腕１５、１５の内、円孔１１から突出した部分４１ の長さ寸法（軸方向寸法）は、自在継手１３として組み立てた場合に、各結合腕 １５、１５の先端縁ともう一方のヨーク７（図１１）との干渉を避ける為に、過 大にならない様に規制する必要がある。又、前記突出した部分４１の長さ寸法が 短過ぎると、前記円孔２０の周囲部分の幅寸法が小さくなって、前記十字軸９の 支持強度が弱くなる為、過小にならない様に規制する必要がある。 However, when the yoke 14 is manufactured as described above, the following problems occur. That is, of the connecting arms 15, 15 of the yoke 14, the length dimension (axial dimension) of the portion 41 projecting from the circular hole 11 is such that, when assembled as the universal joint 13, the tip edges of the connecting arms 15, 15 are In order to avoid interference with the other yoke 7 (FIG. 11), it is necessary to regulate it so that it does not become excessive. Further, if the length of the protruding portion 41 is too short, the width of the peripheral portion of the circular hole 20 becomes small, and the supporting strength of the cross shaft 9 becomes weak. There is a need.
【００１７】 前記突出した部分４１の長さ寸法が多少長くなった場合でも、この部分４１と ヨーク７の結合腕１０、１０とを結ぶ結合筒部分とが干渉しない様に、各結合腕 １０、１０を十分に長くする事は、自在継手全体としての大型化と重量増大とを 招く為、好ましくない。Even if the length of the projecting portion 41 becomes slightly longer, each coupling arm 10, so that this portion 41 and the coupling cylinder portion connecting the coupling arms 10, 10 of the yoke 7 do not interfere with each other. It is not preferable to make 10 sufficiently long because it causes the size and weight of the entire universal joint to increase.
【００１８】 一方、上述の様に鍛造加工により前記ヨーク１４を造る場合、円筒孔２７内に 投入する金属材料２８の量が僅かに変わったり、或は第一の上型２９の押圧力が 僅かに変わっただけでも、前記突出した部分４１の長さ寸法が設計値とは異なっ てしまう。On the other hand, when the yoke 14 is manufactured by the forging process as described above, the amount of the metal material 28 charged into the cylindrical hole 27 is slightly changed, or the pressing force of the first upper die 29 is small. However, the length dimension of the projecting portion 41 is different from the design value even if it is changed to.
【００１９】 この為従来は、金属材料２８に鍛造加工を施す事により、前記素材３３を造っ た後、この素材３３に形成された結合腕１５、１５の先端縁部分に切削等の機械 加工を施す事により、前記突出した部分４１を含め、各結合腕１５、１５の寸法 を設計値通りのものとしていた。金属材料２８に鍛造加工を施した後、更に機械 加工を施す事は、加工の手間の増大により、ヨーク１４の製作費を増大させる原 因となる為、改良が望まれている。For this reason, conventionally, after the metal material 28 is forged, the material 33 is manufactured, and then mechanical processing such as cutting is performed on the tip edge portions of the connecting arms 15 formed on the material 33. By doing so, the dimensions of the respective coupling arms 15, 15 including the protruding portion 41 were made to be the designed values. It is desired to improve the metal material 28 by subjecting the metal material 28 to forging and then further machining it, since it causes an increase in the manufacturing cost of the yoke 14 due to an increase in the time and labor required for the machining.
【００２０】 本考案の自在継手のヨークは、上述の様な事情に鑑みて考案されたものである 。The yoke of the universal joint of the present invention was devised in view of the above circumstances.
【００２１】[0021]
本考案の自在継手のヨークは、前述した従来の自在継手のヨークと同様に、金 属材料を塑性加工する事により一体に造られ、軸の端部に結合自在な結合部を基 端部に設けると共に、この結合部の先端縁に１対の結合腕を、前記結合部と一体 に設けている。 The yoke of the universal joint of the present invention, like the yoke of the conventional universal joint described above, is integrally formed by plastically processing a metal material, and a coupling portion that can be coupled to the end of the shaft is formed at the base end. At the same time, the pair of connecting arms is provided integrally with the connecting portion at the leading edge of the connecting portion.
【００２２】 更に、本考案の自在継手のヨークに於いては、前記１対の結合腕の外周面側先 端縁部周方向両側部分に、各結合腕の外周面よりも凹んだ凹部を設けると共に、 各凹部と前記結合腕の外周面とを、結合腕の外周縁に向かう程凹部に近付く方向 に傾斜した傾斜面（傾斜した曲面を含む。本明細書全体で同じ。）により連続さ せた事を特徴としている。Further, in the yoke of the universal joint of the present invention, recesses recessed from the outer peripheral surfaces of the respective coupling arms are provided at both outer peripheral surface side front end edge circumferential portions of the pair of coupling arms. At the same time, each recess and the outer peripheral surface of the connecting arm are connected by an inclined surface (including an inclined curved surface, which is the same throughout the present specification) inclined toward the outer peripheral edge of the connecting arm so as to approach the recess. It is characterized by
【００２３】[0023]
上述の様に構成される本考案の自在継手のヨークの場合、１対の結合腕の外周 面側先端縁部周方向両側に設けた凹部の存在により、この部分が別のヨークと干 渉しにくくなる。そして、上記部分の長さ寸法に多少の長短が存在しても、この 部分が別のヨークと干渉する事がない。この為、ヨークを鍛造等の塑性加工によ り造る場合に、金属材料の量や押圧力をあまり厳密に管理しなくても、機械加工 が不要で、しかも別のヨークと干渉する事がなく、且つ、十分な強度を有するヨ ークを得られる。 In the case of the yoke of the universal joint of the present invention configured as described above, the presence of the recesses provided on both sides in the circumferential direction on the outer peripheral surface side tip edges of the pair of coupling arms causes this portion to interfere with another yoke. It gets harder. Even if the length of the above-mentioned portion has some length, this portion does not interfere with another yoke. For this reason, when the yoke is made by plastic working such as forging, machining is unnecessary and it does not interfere with another yoke even if the amount of metal material and the pressing force are not strictly controlled. Moreover, a yoke having sufficient strength can be obtained.
【００２４】[0024]
図１〜１１は本考案の実施例を示している。本考案の自在継手のヨークは、図 ７〜１０図に示す様な工程により、金属材料２８に鍛造加工を施した後、十字軸 ９（図１１）を支持する為の円孔１１、１１並びにピン１６の両端部を挿入する 為の円孔２０（図１１）を形成する事で、図１〜６に示す様な形状とされる。 1 to 11 show an embodiment of the present invention. The yoke of the universal joint of the present invention has a circular hole 11, 11 and a circular hole 11 for supporting the cross shaft 9 (Fig. 11) after the metal material 28 is forged by the steps shown in Figs. By forming a circular hole 20 (FIG. 11) into which both ends of the pin 16 are inserted, a shape as shown in FIGS.
【００２５】 即ち、本考案による自在継手のヨーク１４は、前述した従来のヨークと同様に 、アルミニウム合金等の金属材料２８を塑性加工する事により一体に造られ、図 １１に示す様に、回転力伝達用の軸筒１８の端部に結合自在な、結合部の一形態 である結合筒部１９を、その基端部に設けている。これと共に、この結合筒部１ ９の先端縁に１対の結合腕１５、１５を、前記結合筒部１９と一体に設けている 。That is, the yoke 14 of the universal joint according to the present invention is made integrally by plastically processing a metal material 28 such as an aluminum alloy as in the conventional yoke described above, and as shown in FIG. A coupling cylinder portion 19 which is a form of a coupling portion and is freely coupled to the end portion of the shaft cylinder 18 for force transmission is provided at the base end portion thereof. Along with this, a pair of coupling arms 15 and 15 are provided integrally with the coupling cylinder portion 19 at the tip edge of the coupling cylinder portion 19.
【００２６】 又、本考案の自在継手のヨーク１４に於いては、前記１対の結合腕１５、１５ の外周面側先端縁部周方向両側部分（図１の上端部左右両側部分）に、各結合腕 １５、１５の外周面３６、３６よりも凹んだ凹部３５、３５を設けている。そし て、各凹部３５、３５の内側端部と前記結合腕１５、１５の外周面３６、３６と を、傾斜面３７、３７により連続させている。各傾斜面３７、３７は、それぞれ 各結合腕１５、１５の外周縁に向かう程、前記各凹部３５、３５に近付く方向に 傾斜している。Further, in the yoke 14 of the universal joint of the present invention, the outer peripheral surface side tip edge circumferentially both side portions of the pair of coupling arms 15 and 15 (upper end portion left and right side portions in FIG. 1), Recesses 35, 35 that are recessed from the outer peripheral surfaces 36, 36 of the respective coupling arms 15, 15 are provided. Then, the inner ends of the recesses 35, 35 and the outer peripheral surfaces 36, 36 of the coupling arms 15, 15 are made continuous by inclined surfaces 37, 37. The inclined surfaces 37, 37 are inclined toward the outer peripheral edges of the coupling arms 15, 15 in the direction of approaching the recesses 35, 35, respectively.
【００２７】 更に、図示の実施例に於いては、前記各結合腕１５、１５の先端縁中央部分で 、各結合腕１５、１５に対をなして形成された前記傾斜面３７、３７の間部分に も、同様の傾斜面３８を形成している。Further, in the illustrated embodiment, between the inclined surfaces 37, 37 formed in a pair with each of the connecting arms 15, 15 at the central portion of the tip edge of each of the connecting arms 15, 15. The same inclined surface 38 is also formed on the portion.
【００２８】 上述の様な形状を有する、本考案による自在継手のヨーク１４は、図７〜１０ 図に示す様な工程で、アルミニウム合金等の金属材料２８に鍛造加工を施す事に より造られる。The yoke 14 of the universal joint according to the present invention having the above-described shape is manufactured by forging a metal material 28 such as an aluminum alloy in the steps shown in FIGS. ..
【００２９】 即ち、先ず、加工の第一段階として図７〜８に示す様に、囲み型２６の円筒孔 ２７内に金属材料２８を投入し、第一の上型２９と下型３０との間で、この金属 材料２８を押圧する。前記第一の上型２９は前記円筒孔２７の内側に隙間なく押 し込まれ、しかも前記下型３０には、前記結合腕１５、１５（図１１）に相当す る凹部３１、３１が設けられている為、この第一段階で、前記結合腕１５、１５ が形成される。That is, first, as a first step of processing, as shown in FIGS. 7 to 8, a metal material 28 is put into the cylindrical hole 27 of the enclosing die 26, and the first upper die 29 and the lower die 30 are separated. In between, the metallic material 28 is pressed. The first upper mold 29 is pressed into the cylindrical hole 27 without a gap, and the lower mold 30 is provided with recesses 31 and 31 corresponding to the connecting arms 15 and 15 (FIG. 11). Therefore, in this first step, the connecting arms 15 and 15 are formed.
【００３０】 更に、本考案による自在継手のヨーク１４を加工する為の囲み型２６に設けら れた、円筒孔２７の内周面の一部で、前記各凹部３１、３１の先端部分には、前 記凹部３５、３５を形成する為の凸部３９、３９を形成している。そして、各凸 部３９、３９と前記円筒孔２７の内周面とを、傾斜面４０、４０により連続させ ている。Further, a part of the inner peripheral surface of the cylindrical hole 27 provided in the enclosing die 26 for processing the yoke 14 of the universal joint according to the present invention, and the tip portions of the recesses 31, 31 are The convex portions 39 and 39 for forming the concave portions 35 and 35 are formed. Then, the respective convex portions 39, 39 and the inner peripheral surface of the cylindrical hole 27 are made continuous by the inclined surfaces 40, 40.
【００３１】 円筒孔２７の内周面の一部に、上述の様な凸部３９、３９と傾斜面４０、４０ とを形成する事により、前記第一段階の加工により形成される結合腕１５、１５ の外周面側先端縁部周方向両側部分に、前記凹部３５、３５と傾斜面３７、３７ とが形成される。即ち、前記第一の上型２９の下降に伴なって、前記結合腕１５ 、１５が形成されるが、各結合腕１５、１５の外周面側先端縁部周方向両側部分 には、円筒孔２７内周面の凸部３９、３９に対応して前記凹部３５、３５が、円 筒孔２７内周面の傾斜面４０、４０に対応して傾斜面３７、３７が、それぞれ形 成される。但し、この第一段階では、必ずしも前記結合腕１５、１５の形成作業 を完了させる必要はなく、この場合には、各結合腕１５、１５の先端部には未だ 凹部３５、３５並びに傾斜面３７、３７は形成されない事もある。By forming the convex portions 39, 39 and the inclined surfaces 40, 40 as described above on a part of the inner peripheral surface of the cylindrical hole 27, the connecting arm 15 formed by the first-stage processing. The concave portions 35 and 35 and the inclined surfaces 37 and 37 are formed on both circumferential side portions of the outer peripheral surface side end edge portion of the concave portions 35 and 15. That is, as the first upper mold 29 descends, the connecting arms 15 and 15 are formed, but cylindrical holes are formed in the outer peripheral surface side end edge portions on both sides in the circumferential direction of the connecting arms 15 and 15. The concave portions 35 and 35 are formed corresponding to the convex portions 39 and 39 of the inner peripheral surface 27, and the inclined surfaces 37 and 37 are formed corresponding to the inclined surfaces 40 and 40 of the inner peripheral surface of the cylindrical hole 27, respectively. .. However, in this first stage, it is not always necessary to complete the work of forming the connecting arms 15 and 15, and in this case, the concave portions 35 and 35 and the inclined surface 37 are still formed at the tips of the connecting arms 15 and 15. , 37 may not be formed.
【００３２】 上述の様な第一段階の加工を終了した後、加工の第二段階として図９〜１０に 示す様に、前記金属材料２８の上面に、第二の上型３２を押し付ける。この第二 段階の作業により、金属材料２８の上部に、結合筒部１９が形成される。又、前 記結合腕１５、１５は、更に円筒孔２７の奥に迄押し込まれ、前記第一段階の加 工で前記凹部３５、３５と傾斜面４０、４０とが形成されていなかった場合でも 、これら各部３５、４０が形成され、ヨーク１４を造る為の素材３３となる。After the above-described first stage processing is completed, as a second step of the processing, as shown in FIGS. 9 to 10, the second upper mold 32 is pressed against the upper surface of the metal material 28. By this second-stage operation, the coupling cylinder portion 19 is formed on the upper portion of the metal material 28. Further, even if the above-mentioned connecting arms 15 and 15 are pushed further into the cylindrical hole 27 and the concave portions 35 and 35 and the inclined surfaces 40 and 40 are not formed in the first-stage processing, These parts 35 and 40 are formed, and become the material 33 for making the yoke 14.
【００３３】 この様にして造られた素材３３は、前述した従来例の場合と同様に、突き出し ピン３４を上昇させる事によって、前記円筒孔２７の内側から取り出される。そ して、次の加工工程に送られて、ボール盤等による機械加工によって前記各円孔 １１、２０を穿設され、ヨーク１４として完成する。The material 33 manufactured in this manner is taken out from the inside of the cylindrical hole 27 by raising the ejection pin 34 as in the case of the above-mentioned conventional example. Then, it is sent to the next processing step, and the circular holes 11 and 20 are bored by machining by a drilling machine or the like to complete the yoke 14.
【００３４】 前述の様な形状を有し、上述の様にして造られる本考案による自在継手のヨー ク１４は、図１１に示す様に、十字軸９を介して、別のヨーク７に対し揺動変位 自在に結合され、自在継手１３とされるが、本考案のヨーク１４を、この様な自 在継手１３に組み込んだ場合、前記ヨーク１４の１対の結合腕１５、１５の外周 面側先端縁部周方向両側に設けた凹部３５、３５並びに傾斜面３８の存在により 、各結合腕１５、１５の先端部外周縁が別のヨーク７と干渉しにくくなる。As shown in FIG. 11, the yoke 14 of the universal joint according to the present invention having the above-mentioned shape and manufactured as described above is connected to another yoke 7 via the cross shaft 9 as shown in FIG. The yoke 14 of the present invention is incorporated into such a natural joint 13, and the outer peripheral surfaces of the pair of connecting arms 15 and 15 of the yoke 14 are swingably displaced. Due to the presence of the recesses 35, 35 and the inclined surfaces 38 provided on both sides in the circumferential direction of the side tip edge portion, the outer peripheral edge of the tip end portion of each coupling arm 15, 15 is less likely to interfere with another yoke 7.
【００３５】 即ち、ヨーク１４、７同士の変位に基づいてヨーク１４は、十字軸９を中心と して揺動するが、この揺動に基づいてヨーク１４の先端部外周縁は、図１１に鎖 線ａで示す様に、前記十字軸９を中心とする円弧状の軌跡を描く。本考案の自在 継手のヨーク１４の場合、前記各結合腕１５、１５の先端部外周縁中央部分が、 前記十字軸９の中心から最も離れており、前記凹部３５、３５の内側部分が前記 鎖線ａの外側に突出する事はない。That is, the yoke 14 swings around the cross shaft 9 based on the displacement of the yokes 14 and 7, and the outer peripheral edge of the tip end portion of the yoke 14 is shown in FIG. As indicated by a chain line a, an arcuate locus about the cross shaft 9 is drawn. In the case of the yoke 14 of the universal joint of the present invention, the central portion of the outer peripheral edge of the distal end portion of each of the coupling arms 15 and 15 is farthest from the center of the cross shaft 9, and the inner portion of the concave portions 35 and 35 is the chain line. It does not project outside a.
【００３６】 従って、前記凹部３５、３５の内側部分の長さ寸法に多少の長短が存在しても 、この部分が前記別のヨーク７の一部と干渉する事がない。この為、ヨーク１４ を鍛造等の塑性加工により造る場合に、金属材料２８の量や第一、第二の上型２ ９、３２による押圧力をあまり厳密に管理しなくても、鍛造加工後に各結合腕１ ５、１５の先端部外周縁を切削する等の機械加工が不要で、しかも別のヨーク７ と干渉する事がなく、且つ、十分な強度を有するヨークを得られる。Therefore, even if the lengths of the inner portions of the recesses 35, 35 have some length, this portion does not interfere with a part of the other yoke 7. Therefore, when the yoke 14 is formed by plastic working such as forging, the amount of the metal material 28 and the pressing force by the first and second upper molds 29, 32 are not strictly controlled after the forging process. It is possible to obtain a yoke that does not require machining such as cutting the outer peripheral edges of the tip ends of the coupling arms 15 and 15 and does not interfere with another yoke 7 and has sufficient strength.
【００３７】[0037]
本考案の自在継手のヨークは、以上に述べた通り構成され使用されるが、機械 加工が不要で、しかも金属材料の量や押圧力を厳密に管理する必要がなくなり、 安価に製作出来る。 The yoke of the universal joint of the present invention is constructed and used as described above, but it does not require machining, and it does not require strict control of the amount of metal material or pressing force, and can be manufactured at low cost.
【図１】本考案のヨークの実施例を示す側面図。FIG. 1 is a side view showing an embodiment of a yoke of the present invention.
【図２】同じく平面図。FIG. 2 is a plan view of the same.
【図３】図２のＡ矢視図。FIG. 3 is a view on arrow A of FIG.
【図４】図１のＢ−Ｂ断面図。FIG. 4 is a sectional view taken along line BB of FIG.
【図５】図１のＣ−Ｃ断面図。5 is a sectional view taken along line CC of FIG.
【図６】結合腕の先端部分を示す斜視図。FIG. 6 is a perspective view showing a tip portion of a connecting arm.
【図７】本考案のヨークを鍛造加工する際の第一工程を
示す断面図。FIG. 7 is a sectional view showing a first step in forging the yoke of the present invention.
【図８】図７のＤ−Ｄ断面図。8 is a cross-sectional view taken along the line DD of FIG.
【図９】同じく第二工程を示す断面図。FIG. 9 is a sectional view showing a second step in the same manner.
【図１０】図９のＥ−Ｅ断面図。10 is a cross-sectional view taken along line EE of FIG.
【図１１】本考案のヨークを組み込んだ自在継手を示
す、部分縦断側面図。FIG. 11 is a partial vertical sectional side view showing a universal joint incorporating the yoke of the present invention.
【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Ｆ矢視図。FIG. 13 is an enlarged view of arrow F in FIG.
【図１４】従来の自在継手のヨークを鍛造加工する際の
第一工程を示す断面図。FIG. 14 is a cross-sectional view showing a first step in forging a yoke of a conventional universal joint.
【図１５】図１４のＧ−Ｇ断面図。15 is a sectional view taken along line GG of FIG.
【図１６】同じく第二工程を示す断面図。FIG. 16 is a sectional view showing a second step of the same.
【図１７】図１６のＨ−Ｈ断面図。17 is a cross-sectional view taken along line HH of FIG.
１ ステアリングホイール ２ ハンドル軸 ３ 連結ロッド ４ ステアリングギヤ ５ 入力軸 ６ 自在継手 ７ ヨーク ８ ヨーク ９ 十字軸 １０ 結合腕 １１ 円孔 １２ 転がり軸受 １３ 自在継手 １４ ヨーク １５ 結合腕 １６ ピン １７ ゴムブッシュ １８ 軸筒 １９ 結合筒部 ２０ 円孔 ２１ スリーブ ２２ スリーブ ２３ 円孔 ２４ 円孔 ２５ 円孔 ２６ 囲み型 ２７ 円筒孔 ２８ 金属材料 ２９ 第一の上型 ３０ 下型 ３１ 凹部 ３２ 第二の上型 ３３ 素材 ３４ 突き出しピン ３５ 凹部 ３６ 外周面 ３７ 傾斜面 ３８ 傾斜面 ３９ 凸部 ４０ 傾斜面 ４１ 部分 1 Steering wheel 2 Handle shaft 3 Connecting rod 4 Steering gear 5 Input shaft 6 Universal joint 7 Yoke 8 Yoke 9 Cross shaft 10 Joint arm 11 Circular hole 12 Rolling bearing 13 Universal joint 14 Yoke 15 Joint arm 16 pin 17 Rubber bush 18 Axle tube 19 Combined cylindrical part 20 Circular hole 21 Sleeve 22 Sleeve 23 Circular hole 24 Circular hole 25 Circular hole 26 Enclosing type 27 Cylindrical hole 28 Metal material 29 First upper mold 30 Lower mold 31 Recess 32 Second upper mold 33 Material 34 Overhang Pin 35 Recessed portion 36 Outer peripheral surface 37 Sloped surface 38 Sloped surface 39 Convex portion 40 Slope surface 41 Part
Claims (1)
造られ、軸の端部に結合自在な結合部を基端部に設ける
と共に、この結合部の先端縁に１対の結合腕を、前記結
合部と一体に設けた自在継手のヨークに於いて、前記１
対の結合腕の外周面側先端縁部周方向両側部分に、各結
合腕の外周面よりも凹んだ凹部を設けると共に、各凹部
と前記結合腕の外周面とを、結合腕の外周縁に向かう程
凹部に近付く方向に傾斜した傾斜面により連続させた事
を特徴とする自在継手のヨーク。[Claims for utility model registration] [Claim 1] A metal material is integrally formed by plastic working, and a joint portion that can be joined to the end portion of the shaft is provided at the base end portion, and the tip edge of this joint portion is formed. In the yoke of the universal joint in which a pair of connecting arms is integrally provided with the connecting portion,
Outer peripheral surface side tip edge portions of the pair of coupling arms are provided on both sides in the circumferential direction, and concave portions that are recessed from the outer peripheral surface of each coupling arm are provided, and each concave portion and the outer peripheral surface of the coupling arm are provided on the outer peripheral edge of the coupling arm. A universal joint yoke characterized in that it is made continuous by an inclined surface that is inclined in a direction that approaches the recess as it goes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991057987U JP2553096Y2 (en) | 1991-06-28 | 1991-06-28 | Universal joint yoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991057987U JP2553096Y2 (en) | 1991-06-28 | 1991-06-28 | Universal joint yoke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH053652U true JPH053652U (en) | 1993-01-19 |
| JP2553096Y2 JP2553096Y2 (en) | 1997-11-05 |
Family
ID=13071365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991057987U Expired - Lifetime JP2553096Y2 (en) | 1991-06-28 | 1991-06-28 | Universal joint yoke |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2553096Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007333189A (en) * | 2006-06-19 | 2007-12-27 | Jtekt Corp | Yoke for universal-joint and universal joint |
| JP2017150551A (en) * | 2016-02-24 | 2017-08-31 | 日本精工株式会社 | Yoke for cross shaft joint and cross shaft joint |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017207126A (en) | 2016-05-18 | 2017-11-24 | 株式会社ジェイテクト | Universal joint yoke and intermediate shaft |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58113633A (en) * | 1981-12-25 | 1983-07-06 | Yamada Seisakusho:Kk | Yoke member for universal joint and production method thereof |
-
1991
- 1991-06-28 JP JP1991057987U patent/JP2553096Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58113633A (en) * | 1981-12-25 | 1983-07-06 | Yamada Seisakusho:Kk | Yoke member for universal joint and production method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007333189A (en) * | 2006-06-19 | 2007-12-27 | Jtekt Corp | Yoke for universal-joint and universal joint |
| JP4702627B2 (en) * | 2006-06-19 | 2011-06-15 | 株式会社ジェイテクト | Universal joint yoke and universal joint |
| JP2017150551A (en) * | 2016-02-24 | 2017-08-31 | 日本精工株式会社 | Yoke for cross shaft joint and cross shaft joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2553096Y2 (en) | 1997-11-05 |
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