JP3155141B2 - Automatic hub clutch device for vehicles - Google Patents
Automatic hub clutch device for vehiclesInfo
- Publication number
- JP3155141B2 JP3155141B2 JP35080793A JP35080793A JP3155141B2 JP 3155141 B2 JP3155141 B2 JP 3155141B2 JP 35080793 A JP35080793 A JP 35080793A JP 35080793 A JP35080793 A JP 35080793A JP 3155141 B2 JP3155141 B2 JP 3155141B2
- Authority
- JP
- Japan
- Prior art keywords
- ring
- cam
- key block
- outer cam
- axle
- 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.)
- Expired - Fee Related
Links
Landscapes
- Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はトランスフアロツドの操
作により後輪駆動と前後輪駆動とに切換え可能の車両、
特に前輪の車軸が回転駆動されない時、前輪の車軸に対
し前輪が遊回転し、前輪の車軸が回転駆動されると、車
軸の回転が自動的に前輪へ伝達される、車両の自動ハブ
クラツチ装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle which can be switched between rear-wheel drive and front-rear wheel drive by operating a transfer flange.
Particularly, the present invention relates to an automatic hub clutch device for a vehicle, in which when the axle of the front wheel is not rotationally driven, the front wheel freely rotates with respect to the axle of the front wheel, and when the axle of the front wheel is rotationally driven, the rotation of the axle is automatically transmitted to the front wheel. Things.
【０００２】[0002]
【従来の技術】例えば、実願平4-81432 号に開示される
従来の自動ハブクラツチ装置では、切口ないし切欠を有
する捕縛環（ホールドリング）が外カムに外嵌され、外
カムに弾性的に摩擦係合し、捕縛環の端部カム縁がキー
ブロツクから径外方へ突出する突起に係合している。ハ
ブクラツチの接続時、内カムと外カムの噛合いが解除さ
れると、捕縛環の回転に伴い端部カム縁が前記突起に摺
接した後に停止し、捕縛環は軸移動して外カムを内カム
から完全に切り離す。2. Description of the Related Art For example, in a conventional automatic hub clutch device disclosed in Japanese Utility Model Application No. 4-81432, a catch ring (hold ring) having a cut or notch is externally fitted to an outer cam and elastically attached to the outer cam. In frictional engagement, the end cam edge of the catch ring engages a projection that projects radially outward from the key block. At the time of connection of the hub clutch, if the engagement between the inner cam and the outer cam is released, the end cam edge slides on the protrusion and stops after the rotation of the capture ring, and the capture ring moves axially to move the outer cam. Disconnect completely from the inner cam.
【０００３】しかし、ハブクラツチの接続中も、捕縛環
は摩擦係合力を外カムに及ぼし、外カムが捕縛環に対し
滑り回転するので、特に車両の高速走行中は捕縛環と外
カムとの嵌合部に摩擦熱が発生し、封入グリースが劣化
すると、捕縛環と外カムとの嵌合部が早期に摩耗を来た
すという不具合がある。However, even when the hub clutch is connected, the catching ring exerts a frictional engagement force on the outer cam, and the outer cam slides and rotates with respect to the catching ring. When frictional heat is generated in the joint portion and the sealed grease is deteriorated, there is a problem that the fitting portion between the captive ring and the outer cam is quickly worn.
【０００４】[0004]
【発明が解決しようとする課題】本発明の目的は上述の
問題に鑑み、ハブクラツチの接続時、切欠き捕縛環が拡
開され、捕縛環が外カムに及ぼす摩擦係合力が弱くな
る、車両の自動ハブクラツチ装置を提供することにあ
る。SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a vehicle in which the notch catching ring is expanded when the hub clutch is connected, and the frictional engagement force exerted on the outer cam by the catching ring is reduced. An automatic hub clutch device is provided.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明の構成は、車軸ケースに固定した断面コ字形
をなす環状のキーブロツクと、該キーブロツクの内空部
に所定範囲で回転可能かつ軸移動不能に外嵌した内カム
と、車軸にスプライン嵌合されかつ前記内カムに係脱す
る外カムとを備えており、前記外カムの軸移動により車
軸のクラツチ歯と車輪ハブのクラツチ歯との係脱を得る
車両の自動ハブクラツチ装置において、前記外カムに回
転可能かつ軸移動不能に切欠付き捕縛環を外嵌し、前記
キーブロツクから径外方へ突出する突起に係合するカム
縁を前記捕縛環の端部に設け、前記捕縛環に切欠付き補
助環を軸移動不能に外嵌し、該補助環の周方向両端から
径内方へ突出する１対の折曲片を前記捕縛環の切欠へ緩
く係合し、ハブクラツチ装置の接続時、前記捕縛環のカ
ム縁が前記キーブロツクの突起に係合して前記外カムを
軸移動させ、前記補助環から軸方向へ突出する突片が前
記キーブロツクの突起に当接し、前記捕縛環だけが前記
外カムに引き擦られて回転すると、前記捕縛環の切欠が
前記補助環の折曲片へ当接して拡開されるようにしたこ
とを特徴とする。In order to achieve the above object, the present invention provides an annular key block fixed to an axle case and having a U-shaped cross section, and is rotatable within a predetermined range in an inner space of the key block. An inner cam fitted externally so that the shaft cannot be moved; and an outer cam fitted spline-fitted to the axle and engaged with and disengaged from the inner cam. The clutch of the axle and the clutch of the wheel hub are provided by the axial movement of the outer cam. In an automatic hub clutch device for a vehicle for engaging and disengaging a tooth, a notch-shaped catching ring is fitted around the outer cam so as to be rotatable and immovable with respect to a shaft, and engages with a projection projecting radially outward from the key block. Is provided at an end of the captive ring, and a notched auxiliary ring is fitted around the captive ring so that the auxiliary ring cannot move axially, and a pair of bent pieces protruding radially inward from both circumferential ends of the auxiliary ring are caught by the captive ring. Loosely engage the notch in the ring, When the touch device is connected, the cam edge of the catching ring engages with the projection of the key block to axially move the outer cam, and the projection projecting from the auxiliary ring in the axial direction comes into contact with the projection of the key block. When only the capture ring is rotated by being rubbed by the outer cam, the notch of the capture ring abuts on the bent piece of the auxiliary ring and expands.
【０００６】[0006]
【作用】ハブクラツチの接続時、切欠付き捕縛環に外嵌
係合する切欠付き補助環がキーブロツクの突起に当り、
捕縛環だけが外カムに引きずられて僅かながら回転しよ
うとすると、捕縛環が補助環の折曲片により拡開され、
捕縛環の外カムに対する摩擦係合力が弱くなる。したが
つて、捕縛環が停止し外カムが回転しても、捕縛環と外
カムとの嵌合部の摩耗が抑えられる。[Function] When the hub clutch is connected, the notched auxiliary ring, which is externally engaged with the notched capture ring, hits the projection of the key block.
If only the catch ring is pulled by the outer cam and tries to rotate slightly, the catch ring is expanded by the bent piece of the auxiliary ring,
The frictional engagement force of the capture ring with the outer cam is reduced. Therefore, even if the capture ring stops and the outer cam rotates, wear of the fitting portion between the capture ring and the outer cam is suppressed.
【０００７】[0007]
【実施例】図１は本発明に係る車両の自動ハブクラツチ
装置のハブクラツチの接続状態を示す側面断面図、図２
は同要部を拡大して示す側面断面図である。車体に懸架
される車軸ケース２は内部に車軸３を挿通支持し、車軸
３の基端（図の左端）は差動装置の側方歯車に結合され
る。車軸３の先端は車軸ケース２から突出され、スリー
ブ８にスプライン嵌合される。車軸３はスリーブ８の内
周段部と車軸３の小径端部の間に嵌合する押え環１０と
内外１対の止め輪１２，１３とにより軸方向移動を規制
される。FIG. 1 is a side sectional view showing a connection state of a hub clutch of an automatic hub clutch device for a vehicle according to the present invention, and FIG.
FIG. 3 is a side cross-sectional view showing the main part in an enlarged manner. An axle case 2 suspended from a vehicle body supports an axle 3 inserted therein, and a base end (the left end in the figure) of the axle 3 is coupled to a side gear of a differential device. The tip of the axle 3 protrudes from the axle case 2 and is spline-fitted to the sleeve 8. The axial movement of the axle 3 is restricted by a retaining ring 10 fitted between the inner peripheral step of the sleeve 8 and the small diameter end of the axle 3 and a pair of inner and outer retaining rings 12 and 13.
【０００８】一方、車軸ケース２は１対のスラスト軸受
１６，１７により車輪ハブ２２を回転可能に支持する。
車輪ハブ２２はフランジ２２ａに公知の車輪デイスク２
１を重ね合され、かつ複数のボルト１８により締結され
る。車輪ハブ２２は右端に延長ハブ２５をキヤツプ２８
と一緒に、図示してない複数のボルトにより突合せ結合
される。しかし、延長ハブ２５は車輪ハブ２２と一体
に、スリーブ８は車軸３と一体にそれぞれ構成してもよ
い。On the other hand, the axle case 2 rotatably supports the wheel hub 22 by a pair of thrust bearings 16 and 17.
The wheel hub 22 is mounted on the flange 22a by a known wheel disk 2.
1 are overlapped and fastened by a plurality of bolts 18. The wheel hub 22 has an extension hub 25 at the right end and a cap 28.
Together with a plurality of bolts (not shown). However, the extension hub 25 may be formed integrally with the wheel hub 22, and the sleeve 8 may be formed integrally with the axle 3.
【０００９】運転室から図示してないトランスフアロツ
ドの操作により、車軸３が回転駆動されると、スリーブ
８にスプライン嵌合したハブクラツチ２７のクラツチ歯
２７ａが、延長ハブ２５のクラツチ歯２５ａに図１のよ
うに噛み合され、車軸３の回転がスリーブ８、ハブクラ
ツチ２７、延長ハブ２５、車輪ハブ２２を経て車輪へ伝
達される。When the axle 3 is driven to rotate by the operation of a not-shown transformer fork from the cab, the clutch teeth 27a of the hub clutch 27 spline-fitted to the sleeve 8 are connected to the clutch teeth 25a of the extension hub 25. 1, and the rotation of the axle 3 is transmitted to the wheels via the sleeve 8, the hub clutch 27, the extension hub 25, and the wheel hub 22.
【００１０】車軸３の回転に伴いハブクラツチ２７のク
ラツチ歯２７ａを延長ハブ２５のクラツチ歯２５ａへ自
動的に噛み合せるクラツチ作動機構が、延長ハブ２５と
スリーブ８との間の環状空部に配設される。ハブクラツ
チ作動機構は車軸ケース２に固定した断面コ字形をなす
環状のキーブロツク５と、キーブロツク５の環状の内空
部に軸移動不能かつ所定範囲で回動可能に嵌合した内カ
ム６と、スリーブ８にスプライン嵌合した外カム７と、
外カム７に外嵌した切欠付き捕縛環２４と、捕縛環２４
に外嵌した切欠付き補助環４１とから構成される。A clutch operating mechanism for automatically engaging the clutch teeth 27a of the hub clutch 27 with the clutch teeth 25a of the extension hub 25 with the rotation of the axle 3 is provided in the annular space between the extension hub 25 and the sleeve 8. Is done. The hub clutch operating mechanism includes an annular key block 5 fixed to the axle case 2 and having a U-shaped cross section, an inner cam 6 fitted to the annular inner space of the key block 5 so as to be non-axially movable and rotatable within a predetermined range, and a sleeve. 8, an outer cam 7 spline-fitted to
A notched capture ring 24 externally fitted to the outer cam 7, a capture ring 24
And a notched auxiliary ring 41 fitted to the outside.
【００１１】断面コ字形をなす環状のキーブロツク５
は、軸穴に形成した１対の突条５ａ（図４）を車軸３の
キー溝へ係合され、かつ回止め板１９ａへ当接される。
回止め板１９ａはスラスト軸受１７の内輪を締め付ける
ナツト４をボルト１９により固定し、ナツト４の弛みを
抑える。内カム６は左半部をキーブロツク５の内空部へ
回転可能に外嵌され、かつ弾性環６ｂにより軸移動を阻
止される。An annular key block 5 having a U-shaped cross section
Is engaged with a pair of protrusions 5a (FIG. 4) formed in the shaft hole in the keyway of the axle 3 and abuts against the detent plate 19a.
The detent plate 19a fixes the nut 4 for tightening the inner ring of the thrust bearing 17 with a bolt 19 to suppress the nut 4 from loosening. The inner cam 6 is rotatably fitted to the left half of the inner space of the key block 5 and is prevented from moving axially by the elastic ring 6b.
【００１２】内カム６は左方へ突出する１対の突起６ａ
（図２）を、キーブロツク５の端壁に設けた１対の円弧
状のスリツト５ｂ（図４）へ係合される。キーブロツク
５の内空部に収容したコイル状のばね２３は、一端をキ
ーブロツク５に、他端を内カム６にそれぞれ係止され、
内カム６を中立位置（突起６ａがスリツト５ｂの周方向
中央に係合する位置）へ回転付勢する。内カム６は右端
面にカム歯６ｃ（図３）を形成され、外カム７の左端面
に形成したカム歯７ａに係合し、両者が相対回転する
時、外カム７の軸移動に伴いカム歯６ｃ，７ａの係合が
解除される。The inner cam 6 has a pair of projections 6a projecting leftward.
(FIG. 2) is engaged with a pair of arc-shaped slits 5b (FIG. 4) provided on the end wall of the key block 5. The coiled spring 23 housed in the inner space of the key block 5 has one end locked to the key block 5 and the other end locked to the inner cam 6, respectively.
The inner cam 6 is rotationally biased to a neutral position (a position at which the protrusion 6a engages with the center of the slit 5b in the circumferential direction). The inner cam 6 has a cam tooth 6c (FIG. 3) formed on the right end face thereof, and engages with a cam tooth 7a formed on the left end face of the outer cam 7, so that when the two rotate relatively, the axial movement of the outer cam 7 accompanies the movement. The engagement of the cam teeth 6c, 7a is released.
【００１３】外カム７は外周面に形成した環状溝７ｂ
に、捕縛環２４の内周面に形成した周方向の突条２４ｂ
を係合される。捕縛環２４、補助環４１と外カム７の右
端フランジとの間に、滑り座板が３１が介装される。切
欠４４（図５）を有する捕縛環２４は弾性的に拡開可能
であり、外カム７に軸移動不能に外嵌されている。外カ
ム７が回転する時、捕縛環２４の端面に形成したカム縁
２４ｄが、キーブロツク５から径外方へ突出する突起５
ｃに係合し、捕縛環２４を外カム７と一緒に軸移動させ
る。The outer cam 7 has an annular groove 7b formed on the outer peripheral surface.
A circumferential ridge 24b formed on the inner peripheral surface of the capture ring 24;
Is engaged. A sliding seat plate 31 is interposed between the capture ring 24, the auxiliary ring 41, and the right end flange of the outer cam 7. The capture ring 24 having the notch 44 (FIG. 5) is elastically expandable, and is fitted to the outer cam 7 so as not to be axially movable. When the outer cam 7 rotates, a cam edge 24d formed on the end face of the capture ring 24 projects from the key block 5 radially outward.
c, and the capture ring 24 is axially moved together with the outer cam 7.
【００１４】外カム７とハブクラツチ２７の間にばね２
６が介装され、外カム７と座板２９の間に、ハブクラツ
チ２７の溝２７ｂ（図３）を貫通する滑りキー９が介装
される。座板２９はスリーブ８の右端に係止した保持環
１４との間に介装したばね３０により、ハブクラツチ２
７の右端面に当接される。A spring 2 is provided between the outer cam 7 and the hub clutch 27.
The sliding key 9 is interposed between the outer cam 7 and the seat plate 29 and penetrates the groove 27b (FIG. 3) of the hub clutch 27. The spring plate 30 interposed between the seat plate 29 and the holding ring 14 locked to the right end of the sleeve 8 causes the hub clutch 2
7 is in contact with the right end face.
【００１５】図５，６に示すように、捕縛環２４は切欠
４４により拡開可能に構成され、一端縁に１対の突起５
ｃにそれぞれ係合可能の切欠縁２４ｃと傾斜したカム縁
２４ｄとを備えている。本発明によれば、切り欠かれた
補助環４１が捕縛環２４に外嵌され、かつ周方向の両端
から軸方向位置を異にして径内方へ突出する１対の折曲
片４１ｂを、捕縛環２４の切欠４４の内部へ緩く係合さ
れる。補助環４１はキーブロツク５の１対の突起５ｃに
係合可能に軸方向へ延びる１対の突片４１ａを備えてい
る。As shown in FIGS. 5 and 6, the capture ring 24 is configured to be openable by a notch 44, and a pair of protrusions 5 is provided at one edge.
c is provided with a notch edge 24c and an inclined cam edge 24d which can be engaged respectively. According to the present invention, a pair of bent pieces 41b in which the notched auxiliary ring 41 is fitted to the capture ring 24 and projects radially inward from both ends in the circumferential direction at different axial positions, The captive ring 24 is loosely engaged with the inside of the notch 44. The auxiliary ring 41 has a pair of projections 41a extending in the axial direction so as to be engageable with a pair of projections 5c of the key block 5.
【００１６】次に、本発明による車両の自動ハブクラツ
チ装置の作動について説明する。後輪駆動時、機関の回
転はトランスフアで遮断され、車軸３は回転駆動されな
い。この時、ハブクラツチ２７はばね３０の力により図
１の左方へ押されて図３のように解除され、外カム７は
ばね２６の力により左方へ押され、カム歯７ａがカム歯
６ｃに噛み合つている。Next, the operation of the automatic hub clutch device for a vehicle according to the present invention will be described. When the rear wheels are driven, the rotation of the engine is cut off by the transfer, and the axle 3 is not driven to rotate. At this time, the hub clutch 27 is pushed to the left in FIG. 1 by the force of the spring 30 to be released as shown in FIG. 3, the outer cam 7 is pushed to the left by the force of the spring 26, and the cam teeth 7a become the cam teeth 6c. Are engaged.
【００１７】トランスフアロツドの操作により、後輪駆
動から前後輪駆動へ切り換えると、機関の回転が車軸３
へ伝達される。車軸３の回転はスリーブ８、外カム７を
経て捕縛環２４と補助環４１と内カム６へ伝達される。
内カム６の突起６ａがキーブロツク５のスリツト５ｂの
端部に当ると、外カム７が図５の矢印ｘ方向へ軸移動
し、内カム６と外カム７の噛合いが解かれ、外カム７だ
けが回転する。When the rear-wheel drive is switched to front-rear wheel drive by operating the transfer flange, the rotation of the engine is changed to the axle 3.
Is transmitted to The rotation of the axle 3 is transmitted to the capture ring 24, the auxiliary ring 41, and the inner cam 6 via the sleeve 8 and the outer cam 7.
When the protrusion 6a of the inner cam 6 comes into contact with the end of the slit 5b of the key block 5, the outer cam 7 is axially moved in the direction of the arrow x in FIG. 5, and the inner cam 6 and the outer cam 7 are disengaged. Only 7 rotates.
【００１８】同時に、外カム７と捕縛環２４の矢印ｙ方
向への回転と矢印ｘ方向への軸移動に伴い、捕縛環２４
の切欠縁２４ｃがキーブロツク５の突起５ｃから外れ、
捕縛環２４のカム縁２４ｄが突起５ｃに摺接する。した
がつて、捕縛環２４と一緒に外カム７がさらに矢印ｘ方
向へ軸移動し、カム歯６ｃとカム歯７ａの各端縁が互い
に離隔し、接触しない状態になる。At the same time, with the rotation of the outer cam 7 and the capture ring 24 in the direction of arrow y and the axial movement in the direction of arrow x, the capture ring 24
The notch edge 24c of the key block 5 comes off the projection 5c of the key block 5,
The cam edge 24d of the capture ring 24 slides on the projection 5c. Accordingly, the outer cam 7 is further axially moved in the direction of the arrow x together with the capture ring 24, and the respective edges of the cam teeth 6c and the cam teeth 7a are separated from each other so that they do not come into contact with each other.
【００１９】捕縛環２４と一緒に補助環４１が回転する
内に、補助環４１の図５の左側の突片４１ａがキーブロ
ツク５の突起５ｃに当る。捕縛環２４だけが外カム７に
引きずられて矢印ｙ方向へ回転しようとすると、捕縛環
２４の切欠４４の右端縁が補助環４１の軸方向中心の折
曲片４１ｂに当り、捕縛環２４が拡開されることにな
り、捕縛環２４の外カム７に対する引きずり力（摩擦ト
ルク）が減じられる。したがつて、捕縛環２４との外カ
ム７と回転摺動部の摩耗が抑えられる。While the auxiliary ring 41 rotates together with the capture ring 24, the left side projection 41 a of the auxiliary ring 41 in FIG. 5 hits the projection 5 c of the key block 5. When only the catch ring 24 is dragged by the outer cam 7 and tries to rotate in the direction of arrow y, the right edge of the notch 44 of the catch ring 24 hits the bent piece 41 b at the center of the auxiliary ring 41 in the axial direction, and the catch ring 24 As a result, the drag force (friction torque) of the capture ring 24 against the outer cam 7 is reduced. Accordingly, wear of the outer cam 7 and the rotary sliding portion with the capture ring 24 is suppressed.
【００２０】一方、外カム７の矢印ｘ方向への軸移動
は、まず滑りキー９を介して座板２９を図１の右方へ押
してばね３０の力を殺し、次いでばね２６を介してハブ
クラツチ２７を右方へ押し、クラツチ歯２７ａをクラツ
チ歯２５ａに噛み合せる。したがつて、車軸３の回転は
スリーブ８、ハブクラツチ２７のクラツチ歯２７ａ、延
長ハブ２５のクラツチ歯２５ａ、車輪ハブ２２を経て車
輪へ伝達される。On the other hand, the axial movement of the outer cam 7 in the direction of the arrow x first pushes the seat plate 29 rightward in FIG. 1 through the slide key 9 to kill the force of the spring 30, and then the hub clutch through the spring 26. 27 is pushed to the right to engage the clutch teeth 27a with the clutch teeth 25a. Accordingly, the rotation of the axle 3 is transmitted to the wheels via the sleeve 8, the clutch teeth 27a of the hub clutch 27, the clutch teeth 25a of the extension hub 25, and the wheel hub 22.
【００２１】トランスフアロツドの操作により、前後輪
駆動から後輪駆動へ切り換えると、機関の回転はトラン
スフアで遮断され、車軸３は回転駆動されない。車両を
後進させると、前輪により車輪ハブ２２、延長ハブ２
５、ハブクラツチ２７、スリーブ８、外カム７、捕縛環
２４、補助環４１が逆回転され、突起５ｃと突片４１ａ
との関係が図３に示すようになる。この時、内カム６は
ばね２３の力により中立位置へ戻され、外カム７はばね
２６の力により内カム６に噛み合され、座板２９、ハブ
クラツチ２７がばね３０の力により左方へ押され、クラ
ツチ歯２７ａがクラツチ歯２５ａから外れる。When the drive is switched from front-rear wheel drive to rear wheel drive by operation of the transformer, the rotation of the engine is cut off by the transfer, and the axle 3 is not driven to rotate. When the vehicle is moved backward, the wheel hub 22 and the extension hub 2 are driven by the front wheels.
5, the hub clutch 27, the sleeve 8, the outer cam 7, the capture ring 24, and the auxiliary ring 41 are rotated in reverse, so that the protrusion 5c and the protrusion 41a are formed.
Is as shown in FIG. At this time, the inner cam 6 is returned to the neutral position by the force of the spring 23, the outer cam 7 is meshed with the inner cam 6 by the force of the spring 26, and the seat plate 29 and the hub clutch 27 are moved to the left by the force of the spring 30. When pressed, the clutch teeth 27a come off the clutch teeth 25a.
【００２２】[0022]
【発明の効果】本発明は上述のように、車軸ケースに固
定した断面コ字形をなす環状のキーブロツクと、該キー
ブロツクの内空部に所定範囲で回転可能かつ軸移動不能
に外嵌した内カムと、車軸にスプライン嵌合されかつ前
記内カムに係脱する外カムとを備えており、前記外カム
の軸移動により車軸のクラツチ歯と車輪ハブのクラツチ
歯との係脱を得る車両の自動ハブクラツチ装置におい
て、前記外カムに回転可能かつ軸移動不能に切欠付き捕
縛環を外嵌し、前記キーブロツクから径外方へ突出する
突起に係合するカム縁を前記捕縛環の端部に設け、前記
捕縛環に切欠付き補助環を軸移動不能に外嵌し、該補助
環の周方向両端から径内方へ突出する１対の折曲片を前
記捕縛環の切欠へ緩く係合し、ハブクラツチ装置の接続
時、前記捕縛環のカム縁が前記キーブロツクの突起に係
合して前記外カムを軸移動させ、前記補助環から軸方向
へ突出する突片が前記キーブロツクの突起に当接し、前
記捕縛環だけが前記外カムに引き擦られて回転すると、
前記捕縛環の切欠が前記補助環の折曲片へ当接して拡開
されるようにしたので、捕縛環の外カムに対する摩擦係
合力が弱くなり、捕縛環と外カムとの嵌合部の摩耗が抑
えられる。As described above, the present invention provides an annular key block fixed to an axle case and having a U-shaped cross section, and an inner cam rotatably fitted in the inner space of the key block within a predetermined range and non-movable on the shaft. And an outer cam that is spline-fitted to the axle and engages with and disengages from the inner cam. The automatic cam of the vehicle obtains disengagement between the clutch teeth of the axle and the clutch teeth of the wheel hub by axial movement of the outer cam. In the hub clutch device, a notched capture ring is rotatably fitted to the outer cam so as to be non-rotatable and axially displaceable, and a cam edge is provided at an end of the capture ring for engaging with a projection projecting radially outward from the key block. A notched auxiliary ring is fitted around the captive ring so that it cannot move axially, and a pair of bent pieces protruding radially inward from both circumferential ends of the auxiliary ring are loosely engaged with the notches of the captive ring to form a hub clutch. When connecting the device, The edge engages with the projection of the key block to axially move the outer cam, and a protruding piece projecting from the auxiliary ring in the axial direction comes into contact with the projection of the key block, and only the capture ring rubs against the outer cam. And rotate,
Since the notch of the captive ring abuts on the bent piece of the auxiliary ring and is expanded, the frictional engagement force of the captive ring with the outer cam is reduced, and the fitting portion between the captive ring and the outer cam is formed. Wear is reduced.
【図１】本発明に係る自動ハブクラツチ装置の接続状態
を示す側面断面図である。FIG. 1 is a side sectional view showing a connection state of an automatic hub clutch device according to the present invention.
【図２】同ハブクラツチ装置の遮断状態の要部を拡大し
て示す側面断面図である。FIG. 2 is an enlarged side sectional view showing a main part of the hub clutch device in a cut-off state.
【図３】同ハブクラツチ装置の遮断状態を示す平面断面
図である。FIG. 3 is a cross-sectional plan view showing a shut-off state of the hub clutch device.
【図４】同ハブクラツチ装置のキーブロツクの正面図で
ある。FIG. 4 is a front view of a key block of the hub clutch device.
【図５】同自動ハブクラツチ装置の接続状態におけるキ
ーブロツクと捕縛環と補助環の関係を示す平面図であ
る。FIG. 5 is a plan view showing a relationship between a key block, a capture ring, and an auxiliary ring in a connected state of the automatic hub clutch device.
【図６】図５の線６Ａ−６Ａによる正面断面図である。FIG. 6 is a front sectional view taken along line 6A-6A in FIG. 5;
２：車軸ケース ３：車軸 ５：キーブロツク ５ｃ：
突起 ６：内カム ７：外カム ２２：車輪ハブ ２
４：捕縛環 ２４ｄ：カム縁 ２５：延長ハブ ２５
ａ：クラツチ歯 ２７：ハブクラツチ ２７ａ：クラツ
チ歯2: Axle case 3: Axle 5: Key block 5c:
Projection 6: Inner cam 7: Outer cam 22: Wheel hub 2
4: Captive ring 24d: Cam edge 25: Extension hub 25
a: Clutch teeth 27: Hub clutch 27a: Clutch teeth
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 平３−112142（ＪＰ，Ｕ) 実開 昭61−124426（ＪＰ，Ｕ) 実開 平６−56527（ＪＰ，Ｕ) 実開 昭63−122132（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16D 41/00 - 41/36 ──────────────────────────────────────────────────続 き Continued on the front page (56) References JP-A 3-112142 (JP, U) JP-A 61-124426 (JP, U) JP 6-56527 (JP, U) JP-63 122132 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) F16D 41/00-41/36
Claims (1)
状のキーブロツクと、該キーブロツクの内空部に所定範
囲で回転可能かつ軸移動不能に外嵌した内カムと、車軸
にスプライン嵌合されかつ前記内カムに係脱する外カム
とを備えており、前記外カムの軸移動により車軸のクラ
ツチ歯と車輪ハブのクラツチ歯との係脱を得る車両の自
動ハブクラツチ装置において、前記外カムに回転可能か
つ軸移動不能に切欠付き捕縛環を外嵌し、前記キーブロ
ツクから径外方へ突出する突起に係合するカム縁を前記
捕縛環の端部に設け、前記捕縛環に切欠付き補助環を軸
移動不能に外嵌し、該補助環の周方向両端から径内方へ
突出する１対の折曲片を前記捕縛環の切欠へ緩く係合
し、ハブクラツチ装置の接続時、前記捕縛環のカム縁が
前記キーブロツクの突起に係合して前記外カムを軸移動
させ、前記補助環から軸方向へ突出する突片が前記キー
ブロツクの突起に当接し、前記捕縛環だけが前記外カム
に引き擦られて回転すると、前記捕縛環の切欠が前記補
助環の折曲片へ当接して拡開されるようにしたことを特
徴とする、車両の自動ハブクラツチ装置。An annular key block having a U-shaped cross section fixed to an axle case, an inner cam rotatably fitted in an inner space of the key block so as to be rotatable within a predetermined range and unable to move in a shaft, and spline fitted to the axle. And an outer cam engaged with and disengaged from the inner cam, wherein the clutch of the axle and the clutch tooth of the wheel hub are engaged and disengaged by the axial movement of the outer cam. A notch-shaped catching ring is fitted outside so as to be rotatable and axially immovable, and a cam edge is provided at an end of the catching ring for engaging with a projection projecting radially outward from the key block, and the catching ring has a notched auxiliary ring. And a pair of bent pieces projecting radially inward from both ends in the circumferential direction of the auxiliary ring are loosely engaged with the notches of the captive ring, and when the hub clutch device is connected, the captive ring is Cam edge of the key block When the outer cam is axially moved by engaging with the protrusion, the protrusion projecting from the auxiliary ring in the axial direction comes into contact with the protrusion of the key block, and when only the catching ring is rubbed by the outer cam and rotated, An automatic hub clutch device for a vehicle, wherein the notch of the catching ring is expanded by contacting the bent piece of the auxiliary ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35080793A JP3155141B2 (en) | 1993-12-29 | 1993-12-29 | Automatic hub clutch device for vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35080793A JP3155141B2 (en) | 1993-12-29 | 1993-12-29 | Automatic hub clutch device for vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07197952A JPH07197952A (en) | 1995-08-01 |
| JP3155141B2 true JP3155141B2 (en) | 2001-04-09 |
Family
ID=18413010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35080793A Expired - Fee Related JP3155141B2 (en) | 1993-12-29 | 1993-12-29 | Automatic hub clutch device for vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3155141B2 (en) |
-
1993
- 1993-12-29 JP JP35080793A patent/JP3155141B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07197952A (en) | 1995-08-01 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |