JP2006118599A - Axial one-way clutch - Google Patents

Axial one-way clutch Download PDF

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Publication number
JP2006118599A
JP2006118599A JP2004306889A JP2004306889A JP2006118599A JP 2006118599 A JP2006118599 A JP 2006118599A JP 2004306889 A JP2004306889 A JP 2004306889A JP 2004306889 A JP2004306889 A JP 2004306889A JP 2006118599 A JP2006118599 A JP 2006118599A
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Japan
Prior art keywords
wedge
axial
shaped space
way clutch
rod
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JP2004306889A
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Japanese (ja)
Inventor
Natsuo Murakami
夏雄 村上
Takahide Saito
隆英 齋藤
Ryozo Yoshizawa
亮蔵 吉沢
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Honda Motor Co Ltd
NTN Corp
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Honda Motor Co Ltd
NTN Corp
NTN Toyo Bearing Co Ltd
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Priority to JP2004306889A priority Critical patent/JP2006118599A/en
Publication of JP2006118599A publication Critical patent/JP2006118599A/en
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  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an axial one-way clutch with a rod movable in both axial directions and lockable in one direction as necessary. <P>SOLUTION: A wedge space 7 which is narrow at one axial end is formed between the inner periphery of a housing 1 and the outer periphery of the rod 4 inserted through the inside thereof, and a plurality of tapered rollers 8 are incorporated in the wedge space 7. Each of the tapered rollers 8 is energized to a wide portion of the wedge space 7 by an elastic member 9. A cylinder member 11 is mounted in the opening end of the housing 1, and a piston member 13 is slidably incorporated in a cylinder chamber 12 formed in the cylinder member 11. A solenoid selector valve 16 is incorporated in a passage 15 communicating with the cylinder chamber 12 and an high pressure air source 14. High pressure air is supplied into the cylinder chamber 12 by the change-over of the solenoid selector valve 16 into an operating position, so that the tapered rollers 8 are moved to a narrow portion of the wedge space 7 by the axial movement of the piston member 13 and the rod 4 is locked in one direction by the biting of the tapered rollers 8 into the narrow portion. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、往復動可能なロッドの一方向の移動を必要に応じて阻止し得るようにした軸方向のワンウェイクラッチに関するものである。   The present invention relates to an axial one-way clutch which can prevent movement in one direction of a reciprocable rod as required.

軸方向のワンウェイクラッチとして特許文献１に記載されたものが従来から知られている。この軸方向ワンウェイクラッチは、ボディに形成されたシリンダの開口部に、その開口端を大径端とするテーパ面を設け、そのテーパ面と前記シリンダ内に後端部がスライド自在に挿入されたロッドの外周円筒面間にボールと、そのボールを保持する保持器とを組込み、上記保持器に圧縮ばねのばね力を付与してボールがシリンダのテーパ面およびロッドの外周円筒面に圧接する方向に付勢し、上記ロッドに押し込み力が負荷されたとき、シリンダのテーパ面およびロッドの外周円筒面にボールを係合させてロッドをロックするようにしている。
特公昭５６−５３１３９号公報 Conventionally, an axial one-way clutch described in Patent Document 1 has been known. In this axial one-way clutch, a tapered surface having a large-diameter end at the opening end is provided at an opening of a cylinder formed in the body, and a rear end portion is slidably inserted into the tapered surface and the cylinder. A direction in which a ball and a retainer for holding the ball are assembled between the outer peripheral cylindrical surfaces of the rod and the spring is applied to the retainer by applying a spring force of the compression spring to the tapered surface of the cylinder and the outer peripheral cylindrical surface of the rod. When the pushing force is applied to the rod, the ball is engaged with the tapered surface of the cylinder and the outer cylindrical surface of the rod to lock the rod.
Japanese Patent Publication No. 56-53139

ところで、上記特許文献１に記載された軸方向のワンウェイクラッチにおいては、圧縮ばねのばね力によってボールがシリンダのテーパ面およびロッドの外周円筒面に圧接するスタンバイ状態にあり、ロッドに押し込み力が負荷されると、ボールが直ちに係合し、ロッドを押し込み方向に移動させることができない。   By the way, in the one-way clutch in the axial direction described in Patent Document 1, the ball is in a standby state in which the ball is pressed against the tapered surface of the cylinder and the outer cylindrical surface of the rod by the spring force of the compression spring, and the pushing force is applied to the rod. If this is done, the ball will immediately engage and the rod cannot be moved in the pushing direction.

このように、上記従来の軸方向のワンウェイクラッチは、ロッドを一方向にロックし、ロッドの他方向の移動を自由とする構成であってロッドを軸方向の両方向に移動させることができないため、チェーンテンショナのような特殊な用途にのみ使用可能であって用途範囲が狭く、例えば、産業用ロボットの腕や足、あるいは電動ブレーキの駐車ブレーキ機構のように、ロッドを両方向に移動自在とし、必要なときにのみロッドを一方向にロックすることができるようにした装置類には採用することができない。   As described above, the conventional axial one-way clutch is configured to lock the rod in one direction and freely move the rod in the other direction, and cannot move the rod in both axial directions. It can be used only for special applications such as chain tensioners and has a narrow range of applications. For example, the arm and legs of industrial robots, or the parking brake mechanism of electric brakes, the rod can be moved in both directions and is necessary. It is not possible to adopt the device which can lock the rod in one direction only at certain times.

この発明の課題は、ロッドを軸方向の両方向に移動自在とし、必要なときに一方向にロックすることができるようにした軸方向ワンウェイクラッチを提供することである。   An object of the present invention is to provide an axial one-way clutch in which a rod is movable in both axial directions and can be locked in one direction when necessary.

上記の課題を解決するために、この発明においては、固定の配置とされるハウジングと、そのハウジング内に挿通されて軸方向に移動可能とされ、前記ハウジングの内周との間に軸方向の一端が狭小となるくさび状空間を形成するロッドと、前記くさび状空間内に組込まれ、そのくさび状空間の狭小部に対する噛み込みによってロッドを一方向にロックする複数の環状配置の係合子と、その複数の係合子をくさび状空間の広幅部に向けて付勢する弾性部材と、電磁式切換弁の作動により前記弾性部材の弾性力より大きい押圧力を前記係合子に負荷してその係合子をくさび状空間の狭小部に向けて移動させるエア加圧手段とから成る構成を採用したのである。   In order to solve the above-described problems, in the present invention, the housing is fixedly arranged, and is inserted into the housing so as to be movable in the axial direction. A rod that forms a wedge-shaped space having one end narrowed; and a plurality of annularly arranged engagement members that are incorporated in the wedge-shaped space and lock the rod in one direction by biting into the narrow portion of the wedge-shaped space; An elastic member that urges the plurality of engagement elements toward the wide portion of the wedge-shaped space, and a pressure greater than the elastic force of the elastic member is applied to the engagement element by the operation of the electromagnetic switching valve. A configuration comprising air pressurizing means for moving the head toward the narrow portion of the wedge-shaped space is adopted.

ここで、係合子は、円錐ころであってもよく、ボールであってもよい。あるいは、円筒ころであってもよい。   Here, the engagement element may be a tapered roller or a ball. Alternatively, it may be a cylindrical roller.

また、エア加圧手段として、下記の（Ｉ）および（II）に示す構成から成るものを採用することができる。   Moreover, what consists of the structure shown to the following (I) and (II) as an air pressurization means is employable.

エア加圧手段（Ｉ）：ハウジングの開口端部内に取付けられ、係合子と対向する一側面に環状のシリンダ室が形成されたリング状のシリンダ部材と、そのシリンダ部材のシリンダ室内に組込まれてシリンダ室の開口部を閉塞する摺動可能な環状のピストン部材と、前記シリンダ室を高圧エア発生源に連通する通路と、その通路に組込まれ、前記シリンダ室を大気に連通する状態と前記高圧エア発生源とに連通する状態とに選択的に切換える電磁式切換弁とから成るもの。   Air pressurizing means (I): a ring-shaped cylinder member that is mounted in the open end of the housing and has an annular cylinder chamber formed on one side facing the engagement element, and is incorporated in the cylinder chamber of the cylinder member A slidable annular piston member that closes the opening of the cylinder chamber, a passage that communicates the cylinder chamber with a high-pressure air generation source, a state that is incorporated in the passage, and that communicates the cylinder chamber with the atmosphere and the high pressure It consists of an electromagnetic switching valve that selectively switches to a state communicating with an air source.

エア加圧手段（II）：ハウジングの開口端部内に取付けられて係合子と軸方向で対向するノズルプレートを有し、そのノズルプレートの各係合子と対向する位置にエア噴射ノズルを設け、各係合子には前記エア噴射ノズルが挿入される閉塞端を有するノズル挿入孔を形成し、前記エア噴射ノズルと高圧エア発生源とを通路で連通し、その通路にエア噴射ノズルを大気に連通する状態と高圧エア発生源に連通する状態に選択的に切換える電磁式切換弁を組込んだ構成から成るもの。   Air pressurizing means (II): It has a nozzle plate attached in the open end of the housing and facing the engagement element in the axial direction, and an air injection nozzle is provided at a position facing each engagement element of the nozzle plate, A nozzle insertion hole having a closed end into which the air injection nozzle is inserted is formed in the engagement element, the air injection nozzle and the high-pressure air generation source communicate with each other through the passage, and the air injection nozzle communicates with the atmosphere through the passage. Consists of a built-in electromagnetic switching valve that selectively switches between a state and a state communicating with a high-pressure air source.

上記エア加圧手段（Ｉ）において、前記くさび状空間内に複数の係合子を保持する保持器を設け、その保持器の前記くさび状空間の広幅部側に位置する一端に前記ピストン部材を一体化すると、係合子がスキューするのを防止することができると共に、シリンダ室内に対する高圧エアの供給により保持器をくさび状空間の狭小部に向けて移動させることができるため、保持器に保持された複数の係合子をくさび状空間の狭小部に同時に確実に精度よく噛み込ませることができる。   In the air pressurizing means (I), a retainer for holding a plurality of engagement elements is provided in the wedge-shaped space, and the piston member is integrated with one end of the retainer located on the wide-width portion side of the wedge-shaped space. In this case, it is possible to prevent the engagement element from skewing and to move the cage toward the narrow portion of the wedge-shaped space by supplying high-pressure air to the cylinder chamber. A plurality of engagement elements can be reliably and accurately inserted into the narrow portion of the wedge-shaped space at the same time.

上記の構成から成る軸方向のワンウェイクラッチにおいては、電磁式切換弁の切換え動作によって係合子に押圧力を負荷したり、あるいはその負荷を解除したりすることができ、上記負荷の解除により係合子は弾性部材によりくさび状空間の広幅部に保持されるため、ロッドを軸方向の両方向に移動させることができる。また、係合子に押圧力を負荷すると、係合子がくさび状空間の狭小部に向けて移動してその狭小部に噛み込むため、ロッドを一方向にロックすることができる。したがって、軸方向の両方向に移動可能なロッドを必要に応じて一方向にロックすることができる。   In the axial one-way clutch configured as described above, the pressing force can be applied to the engaging element or the load can be released by the switching operation of the electromagnetic switching valve, and the engaging element can be released by releasing the load. Since the elastic member holds the wide portion of the wedge-shaped space, the rod can be moved in both axial directions. Further, when a pressing force is applied to the engagement element, the engagement element moves toward the narrow part of the wedge-shaped space and engages with the narrow part, so that the rod can be locked in one direction. Therefore, the rod movable in both axial directions can be locked in one direction as required.

以下、この発明の実施形態を図面に基づいて説明する。図１乃至図３はこの発明に係る軸方向ワンウェイクラッチの第１の実施形態を示す。図示のように、固定の配置とされる円筒状のハウジング１は、一端に端板２を有し、その端板２に支持された軸受３によってハウジング１の内部に挿通されたロッド４が軸方向に移動自在に支持されている。   Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of an axial one-way clutch according to the present invention. As shown in the figure, a cylindrical housing 1 in a fixed arrangement has an end plate 2 at one end, and a rod 4 inserted into the inside of the housing 1 by a bearing 3 supported by the end plate 2 is a shaft. It is supported movably in the direction.

ロッド４の外周には円筒面５が形成され、一方、ハウジング１の内周には円錐面から成るカム面６が形成され、そのカム面６と円筒面５との間に軸方向の一端が狭小となるくさび状空間７が設けられている。   A cylindrical surface 5 is formed on the outer periphery of the rod 4, while a cam surface 6 formed of a conical surface is formed on the inner periphery of the housing 1, and one axial end is formed between the cam surface 6 and the cylindrical surface 5. A narrow wedge-shaped space 7 is provided.

くさび状空間７の内部には係合子としての複数の円錐ころ８が周方向に等間隔に設けられて環状の配置とされ、その環状配置の円錐ころ８とロッド４間にコイルスプリングをリング状とした弾性部材９が組込まれている。   A plurality of tapered rollers 8 as engaging elements are provided at equal intervals in the circumferential direction inside the wedge-shaped space 7 to form an annular arrangement, and a coil spring is provided between the annular arrangement and the rod 4 in a ring shape. The elastic member 9 is incorporated.

弾性部材９は各円錐ころ８の長さ方向中央部に形成されたリング溝８ａに一部が嵌り込む組込みとされている。また、弾性部材９は縮径状態で組込まれ、その復元弾性により各円錐ころ８をカム面６に押し付けて円錐ころ８をくさび状空間７の広幅部に向けて付勢している。   The elastic member 9 is incorporated so that a part thereof is fitted in a ring groove 8 a formed in the center portion in the length direction of each tapered roller 8. In addition, the elastic member 9 is incorporated in a reduced diameter state, and the tapered rollers 8 are pressed against the cam surface 6 by the restoring elasticity to urge the tapered rollers 8 toward the wide portion of the wedge-shaped space 7.

複数の円錐ころ８のそれぞれは、エア加圧手段１０によりくさび状空間７の狭小部に向けての押圧力が負荷されて上記狭小部に向けて移動される。   Each of the plurality of tapered rollers 8 is moved toward the narrow portion by applying a pressing force toward the narrow portion of the wedge-shaped space 7 by the air pressurizing means 10.

エア加圧手段１０は、ハウジング１の開口端部内にリング状のシリンダ部材１１を圧入等の手段により取付け、そのシリンダ部材１１の円錐ころ８と対向する一側面に環状のシリンダ室１２を形成し、そのシリンダ室１２にリング状のピストン部材１３を摺動自在に組込んでシリンダ室１２の開口を密閉し、このシリンダ室１２と高圧エア発生源１４とを通路１５で連通し、その通路１５に電磁式切換弁１６を組込んだ構成としている。   The air pressurizing means 10 is formed by attaching a ring-shaped cylinder member 11 in the opening end of the housing 1 by means such as press fitting, and forming an annular cylinder chamber 12 on one side surface of the cylinder member 11 facing the tapered roller 8. A ring-shaped piston member 13 is slidably incorporated in the cylinder chamber 12 to seal the opening of the cylinder chamber 12. The cylinder chamber 12 and the high-pressure air generation source 14 are communicated with each other through a passage 15. It is set as the structure which incorporated the electromagnetic switching valve 16.

ここで、電磁式切換弁１６は３ポート２位置切換弁から成り、その電磁式切換弁１６のノーマル位置でシリンダ室１２は大気と連通し、また、作動位置でシリンダ室１２が高圧エア発生源１４に連通するようになっている。   Here, the electromagnetic switching valve 16 comprises a three-port two-position switching valve. The cylinder chamber 12 communicates with the atmosphere at the normal position of the electromagnetic switching valve 16, and the cylinder chamber 12 is a high-pressure air source at the operating position. 14 is communicated.

第１の実施形態で示す軸方向のワンウェイクラッチは上記の構造から成り、図１は電磁式切換弁１６がノーマル位置にある状態を示し、シリンダ室１２は大気に連通し、複数の円錐ころ８のそれぞれは弾性部材９によりくさび状空間７の広幅部に変位されて、円筒面５およびカム面６に対して係合解除された位置に保持されている。   The axial one-way clutch shown in the first embodiment has the above structure. FIG. 1 shows a state where the electromagnetic switching valve 16 is in the normal position, the cylinder chamber 12 communicates with the atmosphere, and a plurality of tapered rollers 8 These are displaced by the elastic member 9 into the wide portion of the wedge-shaped space 7 and are held at positions where they are disengaged from the cylindrical surface 5 and the cam surface 6.

このため、ロッド４は軸方向の両方向（図１の右方向および左方向）に移動可能な状態にある。   For this reason, the rod 4 is in a state of being movable in both axial directions (the right direction and the left direction in FIG. 1).

図１に示す状態において、電磁式切換弁１６を作動位置に切換えると、シリンダ室１２と高圧エア発生源１４とが連通し、その高圧エア発生源１４の高圧エアがシリンダ室１２内に供給され、ピストン部材１３が軸方向に移動して複数の円錐ころ８を押圧する。このため、円錐ころ８は弾性部材９の弾性に抗してくさび状空間７の狭小部に向けて移動し、図３に示すように、円筒面５およびカム面６に係合する。このため、ロッド４はロックされて一方向（図３の矢印で示す反対方向）に移動するのが防止される。   In the state shown in FIG. 1, when the electromagnetic switching valve 16 is switched to the operating position, the cylinder chamber 12 communicates with the high pressure air generation source 14, and the high pressure air from the high pressure air generation source 14 is supplied into the cylinder chamber 12. The piston member 13 moves in the axial direction and presses the plurality of tapered rollers 8. For this reason, the tapered roller 8 moves toward the narrow portion of the wedge-shaped space 7 against the elasticity of the elastic member 9, and engages with the cylindrical surface 5 and the cam surface 6 as shown in FIG. For this reason, the rod 4 is locked and prevented from moving in one direction (the opposite direction indicated by the arrow in FIG. 3).

ここで、ロッド４に図３の矢印で示す方向の押圧力が負荷されると、円錐ころ８はくさび状空間７の広幅部に向けて移動するため、ロッド４は矢印で示す方向のみ移動することができる。   Here, when the pressing force in the direction indicated by the arrow in FIG. 3 is applied to the rod 4, the tapered roller 8 moves toward the wide portion of the wedge-shaped space 7, so the rod 4 moves only in the direction indicated by the arrow. be able to.

上記のように、電磁式切換弁１６を操作してシリンダ室１２を高圧エア発生源１４に連通させることにより、円錐ころ８が係合状態になってロッド４をロックするため、両方向に移動可能なロッド４を必要に応じて一方向にロックすることができる。   As described above, by operating the electromagnetic switching valve 16 to connect the cylinder chamber 12 to the high-pressure air generation source 14, the tapered roller 8 is engaged and locks the rod 4, so that it can move in both directions. The rod 4 can be locked in one direction as required.

図４および図５は、この発明に係る軸方向のワンウェイクラッチの第２の実施形態を示す。この第２の実施形態で示すワンウェイクラッチは、環状に配置された複数の円錐ころ８を円筒面５とカム面６間に組込まれた保持器２０で保持し、その保持器２０の端部にシリンダ部材１１のシリンダ室１２内で摺動可能なピストン部材２１を一体化している点で第１の実施形態で示すワンウェイクラッチと相違している。   4 and 5 show a second embodiment of the axial one-way clutch according to the present invention. In the one-way clutch shown in the second embodiment, a plurality of tapered rollers 8 arranged in an annular shape are held by a cage 20 incorporated between a cylindrical surface 5 and a cam surface 6, and the end of the cage 20 is held. This is different from the one-way clutch shown in the first embodiment in that the piston member 21 slidable in the cylinder chamber 12 of the cylinder member 11 is integrated.

このため、第１の実施形態で示すワンウェイクラッチと同一部品には同一の符号を付して説明を省略する。   For this reason, the same code | symbol is attached | subjected to the same component as the one-way clutch shown in 1st Embodiment, and description is abbreviate | omitted.

第２の実施形態で示すワンウェイクラッチのように、複数の円錐ころ８を保持器２０で保持することにより、円錐ころ８のスキューを防止することができると共に、シリンダ室１２内に対する高圧エアの供給により、保持器２０が軸方向に移動して複数の円錐ころ８がくさび状空間７の狭小部に同時に噛み込むため、ワンウェイクラッチを精度よく作動させることができる。   As in the one-way clutch shown in the second embodiment, the plurality of tapered rollers 8 are held by the cage 20, thereby preventing the skew of the tapered rollers 8 and supplying high-pressure air into the cylinder chamber 12. As a result, the cage 20 moves in the axial direction, and the plurality of tapered rollers 8 simultaneously engage with the narrow portion of the wedge-shaped space 7, so that the one-way clutch can be operated with high accuracy.

図６および図７は、この発明に係る軸方向のワンウェイクラッチの第３の実施形態を示す。この実施形態で示すワンウェイクラッチと第１の実施形態で示すワンウェイクラッチとは、円錐ころ８をくさび状空間７の狭小部に向けて移動させるエア加圧手段１０の構成のみが相違している。   6 and 7 show a third embodiment of the axial one-way clutch according to the present invention. The one-way clutch shown in this embodiment is different from the one-way clutch shown in the first embodiment only in the configuration of the air pressurizing means 10 that moves the tapered roller 8 toward the narrow portion of the wedge-shaped space 7.

このため、第１の実施形態と同一部品には同一の符号を付して説明を省略する。図６に示すエア加圧手段１０は、ハウジング１の開口端部内に取付けたノズルプレート３０の前記円錐ころ８のそれぞれと対向する位置にエア噴射ノズル３１を設け、各エア噴射ノズル３１を円錐ころ８の大端面に形成された盲孔から成るノズル挿入孔３２内に挿入し、前記ノズルプレート３０の外側面には環状のエアヘッダ３３を取付けて、そのエアヘッダ３３とノズルプレート３０間に各エア噴射ノズル３１と連通する環状のエア供給路３４を設け、このエア供給路３４と高圧エア発生源１４とを連通する通路３５に電磁式切換弁３６を組込んでいる。   For this reason, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted. The air pressurizing means 10 shown in FIG. 6 is provided with an air injection nozzle 31 at a position facing each of the tapered rollers 8 of the nozzle plate 30 attached in the opening end of the housing 1, and each air injection nozzle 31 is connected to the tapered roller. 8 is inserted into a nozzle insertion hole 32 consisting of a blind hole formed in the large end surface, and an annular air header 33 is attached to the outer surface of the nozzle plate 30, and each air jet is injected between the air header 33 and the nozzle plate 30. An annular air supply passage 34 that communicates with the nozzle 31 is provided, and an electromagnetic switching valve 36 is incorporated in a passage 35 that communicates the air supply passage 34 and the high-pressure air generation source 14.

ここで、電磁式切換弁３６は３ポート２位置切換弁から成り、その電磁式切換弁３６のノーマル位置でエア供給路３４は大気に連通し、作動位置で高圧エア発生源１４とエア供給路３４とが連通するようになっている。   Here, the electromagnetic switching valve 36 comprises a three-port two-position switching valve. The air supply path 34 communicates with the atmosphere at the normal position of the electromagnetic switching valve 36, and the high-pressure air generation source 14 and the air supply path at the operating position. 34 is in communication.

上記の構成から成るエア加圧手段１０において、電磁式切換弁３６を作動位置に切換えることにより、高圧エア発生源１４からエア供給路３４に高圧エアが供給され、その高圧エアはエア噴射ノズル３１からノズル挿入孔３２内に噴射されるため、円錐ころ８がくさび状空間７の狭小部に向けて移動し、円筒面５およびカム面６に係合してロッド４が一方向にロックされることになる（図７参照）。   In the air pressurizing means 10 configured as described above, the high-pressure air is supplied from the high-pressure air generation source 14 to the air supply path 34 by switching the electromagnetic switching valve 36 to the operating position. Is injected into the nozzle insertion hole 32, the tapered roller 8 moves toward the narrow portion of the wedge-shaped space 7 and engages with the cylindrical surface 5 and the cam surface 6 to lock the rod 4 in one direction. (See FIG. 7).

また、電磁式切換弁３６をノーマル位置に切換えることにより、図６に示すように、エア供給路３４が大気に連通するため、複数の円錐ころ８は弾性部材９の押圧によりくさび状空間７の広幅部に向けて移動して円筒面５およびカム面６に対して係合解除し、ロッド４の一方向のロックを解除する。   Further, by switching the electromagnetic switching valve 36 to the normal position, as shown in FIG. 6, the air supply path 34 communicates with the atmosphere, so that the plurality of tapered rollers 8 are pressed into the wedge-shaped space 7 by the pressing of the elastic member 9. It moves toward the wide part to disengage from the cylindrical surface 5 and the cam surface 6 and unlocks the rod 4 in one direction.

このように、第３の実施形態においても、軸方向の両方向に移動可能なロッド４を必要に応じて一方向にロックすることができる。   Thus, also in 3rd Embodiment, the rod 4 which can move to both directions of an axial direction can be locked to one direction as needed.

第１乃至第３の実施形態では、係合子として円錐ころ８を示したが、係合子はこれに限定されるものではない。例えば、ボールであってもよく、あるいは、円筒ころであってもよい。円筒ころを係合子とする場合は、その円筒ころを軸心がロッド４の軸方向に対して直交する配置とし、ハウジング１の内周およびロッド４の外周にはハウジング１の径方向で対向する一対の平坦面を形成し、その一対の平坦面の一方をロッド４の軸方向に傾斜させて、一対の平坦面間にくさび状空間を形成する。   In 1st thru | or 3rd embodiment, although the tapered roller 8 was shown as an engaging element, an engaging element is not limited to this. For example, it may be a ball or a cylindrical roller. When a cylindrical roller is used as an engagement element, the cylindrical roller is arranged so that its axis is perpendicular to the axial direction of the rod 4, and faces the inner periphery of the housing 1 and the outer periphery of the rod 4 in the radial direction of the housing 1. A pair of flat surfaces is formed, and one of the pair of flat surfaces is inclined in the axial direction of the rod 4 to form a wedge-shaped space between the pair of flat surfaces.

この発明に係る軸方向ワンウェイクラッチの第１の実施形態を示す縦断正面図1 is a longitudinal front view showing a first embodiment of an axial one-way clutch according to the present invention; 図１のII−II線に沿った断面図Sectional view along the line II-II in FIG. 図１に示す軸方向ワンウェイクラッチのロック状態を示す断面図Sectional drawing which shows the locked state of the axial one-way clutch shown in FIG. この発明に係る軸方向ワンウェイクラッチの第２の実施形態を示す縦断正面図A longitudinal front view showing a second embodiment of an axial one-way clutch according to the present invention 図４のＶ−Ｖ線に沿った断面図Sectional view along line VV in FIG. この発明に係る軸方向ワンウェイクラッチの第３の実施形態を示す縦断正面図Longitudinal front view showing a third embodiment of an axial one-way clutch according to the present invention. 図６に示すワンウェイクラッチのロック状態を示す断面図Sectional drawing which shows the locked state of the one-way clutch shown in FIG.

符号の説明Explanation of symbols

１ ハウジング
４ ロッド
７ くさび状空間
８ 円錐ころ（係合子）
９ 弾性部材
１０ エア加圧手段
１１ シリンダ部材
１２ シリンダ室
１３ ピストン部材
１４ 高圧エア発生源
１６ 電磁式切換弁
２０ 保持器
２１ ピストン部材
３０ ノズルプレート
３１ エア噴射ノズル
３２ ノズル挿入孔
３５ 通路
３６ 電磁式切換弁 1 housing 4 rod 7 wedge-shaped space 8 tapered roller (engagement element)
DESCRIPTION OF SYMBOLS 9 Elastic member 10 Air pressurization means 11 Cylinder member 12 Cylinder chamber 13 Piston member 14 High pressure air generation source 16 Electromagnetic switching valve 20 Cage 21 Piston member 30 Nozzle plate 31 Air injection nozzle 32 Nozzle insertion hole 35 Passage 36 Electromagnetic switching valve

Claims (5)

固定の配置とされるハウジングと、そのハウジング内に挿通されて軸方向に移動可能とされ、前記ハウジングの内周との間に軸方向の一端が狭小となるくさび状空間を形成するロッドと、前記くさび状空間内に組込まれ、そのくさび状空間の狭小部に対する噛み込みによってロッドを一方向にロックする複数の環状配置の係合子と、その複数の係合子をくさび状空間の広幅部に向けて付勢する弾性部材と、電磁式切換弁の作動により前記弾性部材の弾性力より大きい押圧力を前記係合子に負荷してその係合子をくさび状空間の狭小部に向けて移動させるエア加圧手段とから成る軸方向のワンウェイクラッチ。   A housing that is fixedly arranged, a rod that is inserted into the housing and is movable in the axial direction, and that forms a wedge-shaped space in which one end in the axial direction is narrowed between the inner periphery of the housing; and A plurality of annularly arranged engagement elements that are incorporated in the wedge-shaped space and lock the rod in one direction by biting into the narrow part of the wedge-shaped space, and the plurality of engagement elements are directed toward the wide portion of the wedge-shaped space. And an elastic member that urges the actuator and an air pressure that applies a pressing force larger than the elastic force of the elastic member to the engaging element by the operation of the electromagnetic switching valve and moves the engaging element toward the narrow portion of the wedge-shaped space. An axial one-way clutch consisting of pressure means. 前記係合子が、円錐ころ、ボール、円筒ころの一種から成る請求項１に記載の軸方向のワンウェイクラッチ。   The axial one-way clutch according to claim 1, wherein the engagement member is made of one of a tapered roller, a ball, and a cylindrical roller. 前記エア加圧手段が、ハウジングの開口端部内に取付けられ、係合子と対向する一側面に環状のシリンダ室が形成されたリング状のシリンダ部材と、そのシリンダ部材のシリンダ室内に組込まれてシリンダ室の開口部を閉塞する摺動可能な環状のピストン部材と、前記シリンダ室を高圧エア発生源に連通する通路と、その通路に組込まれ、前記シリンダ室を大気に連通する状態と前記高圧エア発生源とに連通する状態とに選択的に切換える電磁式切換弁とから成る請求項１又は２に記載の軸方向のワンウェイクラッチ。   The air pressurizing means is mounted in the open end of the housing, and a ring-shaped cylinder member having an annular cylinder chamber formed on one side facing the engaging element, and a cylinder incorporated in the cylinder chamber of the cylinder member A slidable annular piston member that closes the opening of the chamber; a passage that communicates the cylinder chamber with a high-pressure air generation source; a state that is incorporated in the passage and that communicates the cylinder chamber with the atmosphere; and the high-pressure air The axial one-way clutch according to claim 1 or 2, comprising an electromagnetic switching valve that selectively switches to a state communicating with a generation source. 前記くさび状空間内に複数の係合子を保持する保持器を設け、その保持器の前記くさび状空間の広幅部側に位置する一端に前記ピストン部材を一体化した請求項３に記載の軸方向のワンウェイクラッチ。   The axial direction according to claim 3, wherein a cage for holding a plurality of engagement elements is provided in the wedge-shaped space, and the piston member is integrated with one end of the cage located on the wide-width portion side of the wedge-shaped space. One-way clutch. 前記エア加圧手段が、前記ハウジングの開口端部内に取付けられて係合子と軸方向で対向するノズルプレートを有し、そのノズルプレートの各係合子と対向する位置にエア噴射ノズルを設け、各係合子には前記エア噴射ノズルが挿入される閉塞端を有するノズル挿入孔を形成し、前記エア噴射ノズルと高圧エア発生源とを通路で連通し、その通路にエア噴射ノズルを大気に連通する状態と高圧エア発生源に連通する状態に選択的に切換える電磁式切換弁を組込んだ構成から成る請求項１又は２に記載の軸方向のワンウェイクラッチ。   The air pressurizing means has a nozzle plate attached in the opening end of the housing and opposed to the engagement element in the axial direction, and an air injection nozzle is provided at a position facing each engagement element of the nozzle plate, A nozzle insertion hole having a closed end into which the air injection nozzle is inserted is formed in the engagement element, the air injection nozzle and the high-pressure air generation source communicate with each other through the passage, and the air injection nozzle communicates with the atmosphere through the passage. The axial one-way clutch according to claim 1 or 2, comprising an electromagnetic switching valve that selectively switches between a state and a state communicating with a high-pressure air generation source.
JP2004306889A 2004-10-21 2004-10-21 Axial one-way clutch Pending JP2006118599A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015148973A1 (en) * 2014-03-28 2015-10-01 Schaeffler Technologies AG & Co. KG Expandable piston assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015148973A1 (en) * 2014-03-28 2015-10-01 Schaeffler Technologies AG & Co. KG Expandable piston assembly
US10288130B2 (en) 2014-03-28 2019-05-14 Schaeffler Technologies AG & Co. KG Expandable piston assembly

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