JP2004036730A - Rotation transmission device - Google Patents

Rotation transmission device Download PDF

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Publication number
JP2004036730A
JP2004036730A JP2002193609A JP2002193609A JP2004036730A JP 2004036730 A JP2004036730 A JP 2004036730A JP 2002193609 A JP2002193609 A JP 2002193609A JP 2002193609 A JP2002193609 A JP 2002193609A JP 2004036730 A JP2004036730 A JP 2004036730A
Authority
JP
Japan
Prior art keywords
outer ring
transmission device
rotation transmission
roller
transmitting device
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
Application number
JP2002193609A
Other languages
Japanese (ja)
Inventor
Hiromi Nojiri
野尻 博海
Isao Hori
堀 勲
Tatsuya Yamazaki
山崎 達也
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to JP2002193609A priority Critical patent/JP2004036730A/en
Priority to US10/609,482 priority patent/US20040182670A1/en
Publication of JP2004036730A publication Critical patent/JP2004036730A/en
Priority to US11/174,653 priority patent/US7063194B2/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To inexpensively provide an outer ring in a rotation transmission device provided with sufficient tolerance contact pressure. <P>SOLUTION: In the rotation transmission device incorporating an engaging element between the outer ring 6 and an inward member 4, the device inserts an inside sleeve 17 consisting of a high-strength member on the inner surface of the outer ring 6 and intends to enhance the tolerance contact pressure by the inside sleeve 17 and makes it possible to form the entire outer ring 6 by an inexpensive casting material. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
この発明は、動力伝達経路上において、動力の伝達と遮断の切り換えに用いる回転伝達装置に関する。
【0002】
【従来の技術とその課題】
従来、この種の回転伝達装置として、外輪と内方部材との間に、ローラ等の係合子を組み込み、外輪と内方部材の対向面の一方に、カム面を形成したものがある。
【0003】
ところで、複雑な形状をした外輪でもローラ係合面は所定の許容面圧を必要とするため、従来、浸炭材等の鍛造や削り出しで生産されている。
【0004】
ところが、浸炭材等の鍛造や削り出しでの製作は、量産性に劣り、製品コストが高いという問題があった。
【0005】
そこで、この発明は、十分な許容面圧を備える回転伝達装置の外輪を安価に提供しようとするものである。
【0006】
【課題を解決するための手段】
上記の課題を解決するために、外輪と内方部材との間に、係合子を組み込んだ回転伝達装置において、外輪の内面に高強度部材からなる内側スリーブを挿入し、上記外輪を鋳物材によって形成したのである。上記内側スリーブの内面は、円筒面に形成されている。
【0007】
この発明によれば、係合子の面圧が加わる部分だけを高強度部材によって形成することにより、外輪全体を安価な鋳物材によって形成することが可能となるため、製品コストを大幅に削減できる。
【0008】
上記外輪の外周面にも、外輪よりも強度の高い部材からなる外側スリーブを嵌めることにより、鋳物材によって外輪の肉厚を薄くすることが可能となる。
【0009】
上記内側スリーブを形成する高強度部材としては、軸受鋼、浸炭鋼または高周波鋼を熱処理したものを使用することができる。
【0010】
【発明の実施の形態】
図1〜図4にこの発明に係る回転伝達装置1の第1の実施形態を示す。
この回転伝達装置1の入力軸2の先端には、セレーション3を介して内方部材4が同軸上に回転不能に固定されている。
【0011】
入力軸2に回転不能に固定された内方部材4の外面には、軸受5を介して内方部材4の外周面に対向する筒状の外輪6を有するハウジング7が嵌められている。
【0012】
上記内方部材4の外周面は複数のカム面8になり、外輪6の内周面は円筒面9になり、各カム面8と円筒面9間に楔形空間を形成している。この楔形空間内には保持器10が内方部材4に対して嵌め入れ、この保持器10の各カム面8と対応する位置に形成したポケット内に係合子としてのローラ11が組込まれ、ツーウェイクラッチが構成される。
【0013】
上記ローラ11は、カム面8に対して中央の中立位置に位置するとき円筒面9との間に隙間を生じ、内方部材4の回転を外輪6に伝えないオフの状態となり、保持器10でローラ11を楔空間の一方に片寄らすと、ローラ11はカム面8と円筒面9間にかみ込み、内方部材4の回転を外輪6に伝達するオンの状態になる。
【0014】
上記保持器10に一方の端部を係止したスイッチバネ12の他方端部が内方部材4に係止され、ローラ11がカム面8と円筒面9に係合しない中立位置へ保持器10を支持付勢している。
【0015】
前記入力軸2と外輪6の間に設けられたツーウェイクラッチは、電磁クラッチによってオン・オフ制御される。
【0016】
電磁クラッチは、電磁コイル13をケース14にボルト等で回転不能に固定し、該コイル13の電極をケースを通して外部コントローラ(ECU)に接続し、外部コントローラを、例えば、前輪と後輪の回転数、モード選択スイッチ、ABS作動等から入力された各信号を演算および判断して、電磁コイル13に流す電流を制御することによって、オン・オフ制御されている。
【0017】
上記電磁コイル13に対して回転可能に設けられたロータ15は、外輪6に固定されて一体に回転するよう摩擦フランジとなり、このロータ15と保持器10の端部の間に、該保持器10と軸方向のスライド可能で相対回転不能に嵌合したアマチュア16をロータ15と適当な隙間を介して重なるように配置し、電磁コイル13に通電すると、ロータ15とアマチュア16が磁力により圧接して、外輪6と保持器10が回転方向に固定されるようになっている。
【0018】
前記外輪6は、全体が鋳物材によって形成され、ローラ11の面圧が加わる部分に内側スリーブ17を挿入し、この内側スリーブ17の内面に円筒面9を形成している。
【0019】
上記内側スリーブ17は、高強度部材、例えば、軸受鋼、浸炭鋼または高周波鋼を熱処理して形成されている。
【0020】
上記のように、ローラ11の面圧が加わる部分だけを高強度部材によって形成することにより、外輪6の全体を安価な鋳物材によって形成することが可能となるため、製品コストを大幅に削減できる。
【0021】
次に、図5及び図6は、この発明に係る回転伝達装置1の第2の実施形態を示している。
外輪6を鋳物材によって形成した場合、内周面に高強度部材からなる内側スリーブ17を挿入しても、外輪6の外形サイズを大きくしなければ、許容面圧を大きくすることができない。
【0022】
このため、第2の実施形態では、内周面に外輪よりも強度の高い部材からなる内側スリーブ17を挿入し、かつ外輪6の外周面にも、外輪よりも強度の高い部材からなる外側スリーブ18を嵌め入れ、許容面圧の加わる部分の強度を向上させ、外輪6の薄肉化を可能にしている。
【0023】
【発明の効果】
この発明によれば、以上のように、面圧が加わる部分だけを高強度部材によって形成し、その他の部分を鋳物材によって形成することができるので、回転伝達装置の製品コストを大幅に削減することができる。
【図面の簡単な説明】
【図1】この発明に係る回転伝達装置の第1の実施形態の全体を示す縦断正面図
【図2】図1のII−IIの縦断面図
【図3】図1のIII−IIIの縦断面図
【図4】この発明に係る回転伝達装置の第1の実施形態の外輪を示す縦断正面図
【図5】この発明に係る回転伝達装置の第2の実施形態の全体を示す縦断正面図
【図6】この発明に係る回転伝達装置の第2の実施形態の外輪を示す縦断正面図
【符号の説明】
1 回転伝達装置
2 入力軸
3 セレーション
4 内方部材
5 軸受
6 外輪
7 ハウジング
8 カム面
9 円筒面
10 保持器
11 ローラ
12 スイッチバネ
13 電磁コイル
14 ケース
15 ロータ
16 アマチュア
17 内側スリーブ
18 外側スリーブ
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rotation transmission device used for switching between transmission and interruption of power on a power transmission path.
[0002]
[Prior art and its problems]
2. Description of the Related Art Conventionally, as this kind of rotation transmission device, there is an apparatus in which an engaging element such as a roller is incorporated between an outer ring and an inner member, and a cam surface is formed on one of opposing surfaces of the outer ring and the inner member.
[0003]
By the way, even in the case of an outer ring having a complicated shape, the roller engaging surface requires a predetermined allowable surface pressure, and therefore, it is conventionally produced by forging or cutting a carburized material or the like.
[0004]
However, there is a problem that the production by forging or shaving of a carburized material or the like is inferior in mass productivity and the product cost is high.
[0005]
Therefore, the present invention is to provide an inexpensive outer ring of a rotation transmission device having a sufficient allowable surface pressure.
[0006]
[Means for Solving the Problems]
In order to solve the above problem, between the outer ring and the inner member, in a rotation transmission device incorporating an engaging element, an inner sleeve made of a high-strength member is inserted into the inner surface of the outer ring, and the outer ring is made of a casting material. It was formed. The inner surface of the inner sleeve is formed in a cylindrical surface.
[0007]
According to the present invention, since only the portion of the engaging element to which the contact pressure is applied is formed of a high-strength member, the entire outer ring can be formed of an inexpensive casting material, so that the product cost can be significantly reduced.
[0008]
By fitting the outer sleeve made of a member having higher strength than the outer ring also on the outer peripheral surface of the outer ring, the thickness of the outer ring can be reduced by the casting material.
[0009]
As the high-strength member forming the inner sleeve, a heat-treated bearing steel, carburized steel, or high-frequency steel can be used.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
1 to 4 show a first embodiment of a rotation transmission device 1 according to the present invention.
An inner member 4 is coaxially and non-rotatably fixed to a distal end of an input shaft 2 of the rotation transmitting device 1 via a serration 3.
[0011]
A housing 7 having a cylindrical outer ring 6 opposed to the outer peripheral surface of the inner member 4 via a bearing 5 is fitted on the outer surface of the inner member 4 which is fixed to the input shaft 2 so as not to rotate.
[0012]
The outer peripheral surface of the inner member 4 becomes a plurality of cam surfaces 8, and the inner peripheral surface of the outer race 6 becomes a cylindrical surface 9, forming a wedge-shaped space between each cam surface 8 and the cylindrical surface 9. A retainer 10 is fitted into the inner member 4 in the wedge-shaped space, and a roller 11 as an engaging element is incorporated in a pocket formed at a position corresponding to each cam surface 8 of the retainer 10, and a two-way A clutch is configured.
[0013]
When the roller 11 is located at the center neutral position with respect to the cam surface 8, a gap is formed between the roller 11 and the cylindrical surface 9, and the roller 11 is turned off so that the rotation of the inner member 4 is not transmitted to the outer ring 6. When the roller 11 is deviated to one side of the wedge space, the roller 11 bites between the cam surface 8 and the cylindrical surface 9 to be in an ON state where the rotation of the inner member 4 is transmitted to the outer ring 6.
[0014]
The other end of the switch spring 12 having one end locked to the retainer 10 is locked to the inner member 4 and the roller 10 is moved to a neutral position where the roller 11 does not engage with the cam surface 8 and the cylindrical surface 9. Is urged to support.
[0015]
The two-way clutch provided between the input shaft 2 and the outer ring 6 is on / off controlled by an electromagnetic clutch.
[0016]
The electromagnetic clutch fixes the electromagnetic coil 13 to the case 14 in a non-rotatable manner with bolts or the like, connects the electrodes of the coil 13 to an external controller (ECU) through the case, and connects the external controller to, for example, the rotational speeds of the front and rear wheels. On / off control is performed by calculating and judging signals input from a mode selection switch, an ABS operation and the like, and controlling a current flowing through the electromagnetic coil 13.
[0017]
A rotor 15 rotatably provided with respect to the electromagnetic coil 13 serves as a friction flange so as to be fixed to the outer ring 6 and rotate integrally therewith. An armature 16 fitted axially slidably and non-rotatably is arranged so as to overlap with the rotor 15 via a suitable gap, and when the electromagnetic coil 13 is energized, the rotor 15 and the armature 16 are pressed by magnetic force. The outer ring 6 and the retainer 10 are fixed in the rotation direction.
[0018]
The outer race 6 is formed entirely of a casting material, and has an inner sleeve 17 inserted into a portion of the roller 11 to which the surface pressure is applied, and forms a cylindrical surface 9 on the inner surface of the inner sleeve 17.
[0019]
The inner sleeve 17 is formed by heat-treating a high-strength member, for example, bearing steel, carburized steel, or high-frequency steel.
[0020]
As described above, by forming only the portion of the roller 11 to which the surface pressure is applied by a high-strength member, the entire outer ring 6 can be formed by an inexpensive casting material, so that the product cost can be significantly reduced. .
[0021]
Next, FIGS. 5 and 6 show a second embodiment of the rotation transmitting device 1 according to the present invention.
When the outer ring 6 is formed of a casting material, the allowable surface pressure cannot be increased without increasing the outer size of the outer ring 6 even if the inner sleeve 17 made of a high-strength member is inserted into the inner peripheral surface.
[0022]
Therefore, in the second embodiment, the inner sleeve 17 made of a member having higher strength than the outer ring is inserted into the inner peripheral surface, and the outer sleeve made of a member having higher strength than the outer ring is also inserted into the outer peripheral surface of the outer ring 6. 18, the strength of the portion where the allowable surface pressure is applied is improved, and the outer ring 6 can be made thinner.
[0023]
【The invention's effect】
According to the present invention, as described above, only the portion to which the surface pressure is applied can be formed by the high-strength member, and the other portions can be formed by the casting material, so that the product cost of the rotation transmission device is significantly reduced. be able to.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional front view showing the entirety of a first embodiment of a rotation transmitting device according to the present invention; FIG. 2 is a longitudinal sectional view taken along line II-II of FIG. 1; FIG. FIG. 4 is a longitudinal sectional front view showing the outer race of the first embodiment of the rotation transmitting device according to the present invention. FIG. 5 is a longitudinal sectional front view showing the entirety of the second embodiment of the rotation transmitting device according to the present invention. FIG. 6 is a longitudinal sectional front view showing an outer race of a second embodiment of the rotation transmitting device according to the present invention.
DESCRIPTION OF SYMBOLS 1 Rotation transmission device 2 Input shaft 3 Serration 4 Inner member 5 Bearing 6 Outer ring 7 Housing 8 Cam surface 9 Cylindrical surface 10 Cage 11 Roller 12 Switch spring 13 Electromagnetic coil 14 Case 15 Rotor 16 Amateur 17 Inner sleeve 18 Outer sleeve

Claims (4)

外輪と内方部材との間に、係合子を組み込んだ回転伝達装置において、外輪の内面に高強度部材からなる内側スリーブを挿入し、上記外輪を鋳物材によって形成したことを特徴とする回転伝達装置。A rotation transmission device incorporating an engaging element between an outer ring and an inner member, wherein an inner sleeve made of a high-strength member is inserted into the inner surface of the outer ring, and the outer ring is formed of a casting material. apparatus. 上記外輪の外周面に、外輪よりも強度の高い部材からなる外側スリーブを嵌めたことを特徴とする請求項1記載の回転伝達装置。2. The rotation transmitting device according to claim 1, wherein an outer sleeve made of a member having higher strength than the outer ring is fitted on an outer peripheral surface of the outer ring. 上記内側スリーブの内面が円筒面に形成されていることを特徴とする請求項1または2記載の回転伝達装置。3. The rotation transmitting device according to claim 1, wherein the inner surface of the inner sleeve is formed as a cylindrical surface. 上記内側スリーブを形成する高強度部材が、軸受鋼、浸炭鋼または高周波鋼を熱処理したものである請求項1〜3のいずれかに記載の回転伝達装置。The rotation transmitting device according to any one of claims 1 to 3, wherein the high-strength member forming the inner sleeve is obtained by heat-treating bearing steel, carburized steel, or high-frequency steel.
JP2002193609A 2002-07-02 2002-07-02 Rotation transmission device Pending JP2004036730A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2002193609A JP2004036730A (en) 2002-07-02 2002-07-02 Rotation transmission device
US10/609,482 US20040182670A1 (en) 2002-07-02 2003-07-01 Rotation transmission device
US11/174,653 US7063194B2 (en) 2002-07-02 2005-07-06 Rotation transmission device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002193609A JP2004036730A (en) 2002-07-02 2002-07-02 Rotation transmission device

Publications (1)

Publication Number Publication Date
JP2004036730A true JP2004036730A (en) 2004-02-05

Family

ID=31702533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002193609A Pending JP2004036730A (en) 2002-07-02 2002-07-02 Rotation transmission device

Country Status (1)

Country Link
JP (1) JP2004036730A (en)

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