JPH0121045Y2 - - Google Patents
Info
- Publication number
- JPH0121045Y2 JPH0121045Y2 JP1981025243U JP2524381U JPH0121045Y2 JP H0121045 Y2 JPH0121045 Y2 JP H0121045Y2 JP 1981025243 U JP1981025243 U JP 1981025243U JP 2524381 U JP2524381 U JP 2524381U JP H0121045 Y2 JPH0121045 Y2 JP H0121045Y2
- Authority
- JP
- Japan
- Prior art keywords
- hub
- wheel hub
- diameter
- cover
- wheel
- 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
Links
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 238000013459 approach Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Landscapes
- Arrangement Of Transmissions (AREA)
Description
【考案の詳細な説明】
本考案は大型車両等に使用されるハブ減速装置
に関し特にホイールデイスクやブレーキドラム等
の着脱性を向上させたハブカバーの取付構造に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hub reducer used in large vehicles, and more particularly to a hub cover mounting structure that improves the ease of attaching and detaching wheel discs, brake drums, etc.
例えば大型トラツク等ではアクスルシヤフトと
ホイールハブとの間に減速装置を介在させてトラ
ンスミツシヨン及びデフ機構の負荷トルクを軽減
させるようにしたものがある。 For example, some large trucks have a reduction gear interposed between the axle shaft and the wheel hub to reduce the load torque on the transmission and differential mechanism.
例えば、実公昭40−23850号公報に示すような
ものが、従来一般的な構造として知られるが、こ
のように減速機構の伝達経路をアクスルシヤフト
に支持されたサンギヤから、その外側のプラネタ
リギヤを介して、その外側のリングギヤ及びこれ
に連結されたホイールハブに駆動力を伝達するも
のでは、外径が大きくなり、重量が大きくなると
いう問題がある。 For example, the structure shown in Japanese Utility Model Publication No. 40-23850 is known as a conventional structure, but in this way, the transmission path of the reduction mechanism is transmitted from the sun gear supported by the axle shaft through the planetary gear on the outside. However, in a device that transmits driving force to the outer ring gear and the wheel hub connected thereto, there is a problem in that the outer diameter becomes large and the weight becomes large.
本考案は、このような従来の問題点に鑑みなさ
れたもので、小型軽量性を可及的に促進しつつ、
ホイールハブの外周に取りつけられるホイールデ
イスク、ブレーキドラムや減速機構を覆つて取り
つけられるハブカバーの脱着を容易に行えるよう
にした車両用ハブ減速装置を提供することを目的
とする。 The present invention was developed in view of these conventional problems, and while promoting compactness and lightness as much as possible,
To provide a hub speed reduction device for a vehicle in which a wheel disk mounted on the outer periphery of a wheel hub, a hub cover mounted to cover a brake drum and a speed reduction mechanism can be easily attached and detached.
このため本考案は、アクスルシヤフトを包持す
るアクスルチユーブにインナ及びアウタベアリン
グを介してホイールハブを軸支する一方、内周面
に歯を形成したリングギヤを該リングギヤ外径と
略同形又はこれより小径に形成されたアクスルシ
ヤフトの外端部に動力伝達される構造で連結し、
外周面に歯を形成したサンギヤをアクスルチユー
ブの外端部に装着すると共に、前記両ギヤを噛み
合い連動させるプラネタリギヤをホイールハブの
外側に配設したプラネタリキヤリアに軸着し、該
プラネタリキヤリアを前記リングギヤより内径側
に配設した締付部材を介してホイールハブの外端
面に締付固定し、かつ、前記ホイールハブのホイ
ールデイスクから外側に突出する部分及び該ホイ
ールハブの突出端部外周面に嵌着した薄肉プレス
成形金属板からなる円筒部を有するハブカバーの
全周面をホイールデイスク内径より小径に形成す
ると共に、該突出する部分は該ハブカバーの開放
端面が当接する段付部を備え、該ハブカバーはそ
の有底端部側に縮径したテーパ形状を備え、ハブ
カバーのホイールハブとの嵌合部に軸方向に孔径
一定の小孔を設け、ホイールハブ外周面に螺着し
たボルトの頭部を前記ハブカバーの小孔に係合さ
せてハブカバーを抜け止め固定した構成とした。 For this reason, the present invention pivots a wheel hub on an axle tube that encloses an axle shaft via an inner and an outer bearing, and a ring gear having teeth formed on its inner circumferential surface has a shape that is approximately the same as the outer diameter of the ring gear or has a diameter smaller than that. Connected to the outer end of the axle shaft formed with a small diameter in a structure that transmits power,
A sun gear having teeth formed on its outer circumferential surface is attached to the outer end of the axle tube, and a planetary gear that engages and interlocks the two gears is pivoted to a planetary carrier disposed outside the wheel hub, and the planetary carrier is attached to the ring gear. It is tightened and fixed to the outer end surface of the wheel hub via a tightening member disposed on the inner diameter side, and is fitted into the portion of the wheel hub that protrudes outward from the wheel disk and the outer peripheral surface of the protruding end of the wheel hub. The entire peripheral surface of the hub cover has a cylindrical portion made of a thin press-formed metal plate, and the entire circumferential surface thereof is formed to have a smaller diameter than the inner diameter of the wheel disk, and the protruding portion includes a stepped portion that the open end surface of the hub cover comes into contact with. The hub cover has a tapered shape with a reduced diameter on the bottom end side, and a small hole with a constant diameter is provided in the axial direction at the part where the hub cover fits with the wheel hub, and the head of the bolt screwed onto the outer circumferential surface of the wheel hub. The hub cover is fixed by engaging with the small hole of the hub cover to prevent it from coming off.
以下に本考案を図示実施例に基づいて詳細に説
明する。 The present invention will be explained in detail below based on illustrated embodiments.
図において、図示しないデフ機構等を介してト
ランスミツシヨンの出力軸に連結されたアクスル
シヤフト１の外端フランジ部２にはボルト３でギ
ヤ４を締付固定し、内周面に歯を形成したリング
ギヤ５を前記ギヤ４に噛合させてアクスルシヤフ
ト１とリングギヤ５とを一体回転させるようにし
ている。前記アクスルシヤフト１を被覆するアク
スルチユーブ６にはインナベアリング７及びアウ
タベアリング８を介してホイールハブ９を軸着す
る。 In the figure, a gear 4 is tightened and fixed with bolts 3 to the outer end flange portion 2 of an axle shaft 1 connected to the output shaft of the transmission via a differential mechanism (not shown), etc., and teeth are formed on the inner peripheral surface. The ring gear 5 is meshed with the gear 4, so that the axle shaft 1 and the ring gear 5 are rotated together. A wheel hub 9 is pivotally attached to an axle tube 6 covering the axle shaft 1 via an inner bearing 7 and an outer bearing 8.
又、前記アクスルチユーブ６の外端部外周面に
はスプライン１０を形成し該スプライン１０にサ
ンギヤ１１を挿着固定して該ギヤ１１の外周面に
形成した歯とリングギヤ５の歯とを対向させてい
る。 Further, a spline 10 is formed on the outer peripheral surface of the outer end of the axle tube 6, and a sun gear 11 is inserted and fixed onto the spline 10, so that the teeth formed on the outer peripheral surface of the gear 11 and the teeth of the ring gear 5 are opposed to each other. ing.
そして、リングギヤ５とサンギヤ１１とを噛み
合い連動させるプラネタリギヤ１２をホイールハ
ブ９の外端面にボルト１３で締結固定したプラネ
タリキヤリヤ１４に支軸１５を介して軸着するこ
とにより、リングギヤ５が回転するとプラネタリ
キヤリヤ１４を介してホイールハブ９が減速駆動
されるようになつている。尚、前記ホイールハブ
９の外端面とプラネタリキヤリヤ１４の内端面、
つまり両者の締付面にはそれぞれ断面半円状をな
す複数条の凹溝１６を放射状に形成すると共に、
対向する凹溝１６間に丸ピン１７をそれぞれ嵌合
保持させることで該丸ピン１７を介してプラネタ
リキヤリヤ１４とホイールハブ９とを噛み合い係
合させている。 A planetary gear 12 that meshes and interlocks the ring gear 5 and the sun gear 11 is pivotally attached to a planetary carrier 14 which is fastened and fixed to the outer end surface of the wheel hub 9 with bolts 13 via a support shaft 15, so that when the ring gear 5 rotates, The wheel hub 9 is decelerated and driven via the planetary carrier 14. Note that the outer end surface of the wheel hub 9 and the inner end surface of the planetary carrier 14,
In other words, a plurality of concave grooves 16 each having a semicircular cross section are formed radially on the tightening surfaces of both, and
By fitting and holding round pins 17 between the opposing grooves 16, the planetary carrier 14 and the wheel hub 9 are meshed and engaged via the round pins 17.
一方、前記ホイールハブ９にはハブカバー１８
を嵌着してアクスルシヤフト１の外端部、リング
ギヤ５及びプラネタリギヤ１２を覆つている。こ
のカバー１８は図示のように薄肉の金属板でプレ
ス成型されたものであつて、ホイールハブ９に近
づくに従つてその外径が次第に大きくなるように
緩やかな角度θのテーパ状になつている。 On the other hand, the wheel hub 9 has a hub cover 18
is fitted to cover the outer end of the axle shaft 1, the ring gear 5, and the planetary gear 12. As shown in the figure, this cover 18 is press-molded from a thin metal plate, and is tapered at a gentle angle θ so that its outer diameter gradually increases as it approaches the wheel hub 9. .
そして、ホイールハブ９の内端フランジ部にハ
ブボルト１９で取り付けられたブレーキドラム２
０及びホイールデイスク２１から突出するハブ９
部分及びカバー１８の最大径をプレーキドラム２
０及びホイールデイスク２１の内径より小さくす
る。又、前記ハブカバー１８のホイールハブ９と
の嵌合部周縁には複数（２〜３個程度）の小孔１
８ａを設けると共に、カバー１８装着時前記小孔
１８ａと重合するハブ９の外周面位置にねじ孔９
ａを設け、該ねじ孔９ａに螺着したボルト２２の
頭部を前記小孔１８ａに係合させることによりハ
ブカバー１８を抜け止め固定する。ここで、小孔
１８ａは抜け止め機能及び回り止めの機能のみ有
すればよいから、軸方向に孔径一定の孔でよく、
加工が容易である。２３はホイールハブ９とハブ
カバー１８との間をシールするシールリングであ
る。 A brake drum 2 is attached to the inner end flange portion of the wheel hub 9 with hub bolts 19.
0 and the hub 9 protruding from the wheel disc 21
The maximum diameter of the part and cover 18 is
0 and the inner diameter of the wheel disc 21. Further, a plurality of (about 2 to 3) small holes 1 are formed on the periphery of the fitting portion of the hub cover 18 with the wheel hub 9.
8a, and a screw hole 9 is provided on the outer peripheral surface of the hub 9, which overlaps with the small hole 18a when the cover 18 is attached.
a is provided, and by engaging the head of a bolt 22 screwed into the screw hole 9a with the small hole 18a, the hub cover 18 is fixed to prevent it from coming off. Here, since the small hole 18a only needs to have a function of preventing slippage and a function of preventing rotation, the hole 18a may have a constant diameter in the axial direction.
Easy to process. 23 is a seal ring that seals between the wheel hub 9 and the hub cover 18.
次にかかる減速装置の作動を説明する。アクス
ルシヤフト１が回転すると該シヤフト１に固定さ
れたギヤ４を介してリングギヤ５が回転する。こ
れにより該リングギヤ５と前記サンギヤ１１とに
噛合するプラネタリギヤ１２が自転と共にリング
ギヤ５の回転即ちアクスルシヤフト１の回転速度
より減速されて公転し、該プラネタリギヤ１２を
軸支するプラネタリキヤリヤ１４及び該キヤリヤ
１４に丸ピン１７を介して係合するホイールハブ
９が前記プラネタリギヤ１２の公転速度で減速駆
動されるのである。 Next, the operation of such a reduction gear will be explained. When the axle shaft 1 rotates, the ring gear 5 rotates via the gear 4 fixed to the shaft 1. As a result, the planetary gear 12 that meshes with the ring gear 5 and the sun gear 11 rotates on its own axis and revolves at a speed lower than the rotation speed of the ring gear 5, that is, the rotation speed of the axle shaft 1. The wheel hub 9, which is engaged with the wheel hub 14 through the round pin 17, is driven at a reduced speed at the revolution speed of the planetary gear 12.
そして、このようにして小型軽量化を図つた減
速機構を有すると共に、ブレーキドラム２０及び
ホイールデイスク２１から突出するホイールハブ
９部分及びこれに嵌着されるハブカバー１８の外
周面は締結用フランジ部がなく外側方向に外径が
漸減する形状であるためハブカバー１８を装着し
たままハブボルト１９の着脱のみでブレーキドラ
ム２０及びホイールデイスク２１の着脱が行なえ
るのである。 In this way, the wheel hub 9 protrudes from the brake drum 20 and the wheel disk 21, and the outer circumferential surface of the hub cover 18 fitted thereto has a fastening flange. Since the outer diameter gradually decreases in the outward direction, the brake drum 20 and wheel disc 21 can be attached and detached by simply attaching and detaching the hub bolts 19 while the hub cover 18 is attached.
又、ハブカバー１８の着脱もボルト２２の着脱
のみで簡単に行なえる。尚、このようにホイール
ハブ９がプラネタリキヤリヤ１４の径を小さくし
ても前記丸ピン１７の係合によりせん断面積及び
受圧面積を大きく採れるのでハブ９、キヤリヤ１
４間の伝達トルクは充分高くできる。但し本考案
はかかる丸ピン１７を使用しないものにも適用で
きることはいうまでもない。 Further, the hub cover 18 can be easily attached and detached by simply attaching and detaching the bolts 22. In this way, even if the diameter of the planetary carrier 14 in the wheel hub 9 is reduced, the engagement of the round pin 17 can increase the shearing area and pressure receiving area, so the hub 9 and the carrier 1
The transmission torque between the two can be made sufficiently high. However, it goes without saying that the present invention can also be applied to a device that does not use such a round pin 17.
以上説明したように、本考案によれば減速機構
の改良により小型軽量性を可及的に促進できると
共にハブカバーをホイールハブの端部周面に嵌着
しハブ周面に螺着したボルト頭部をハブカバーに
形成した軸方向に孔径一定の加工の容易な小孔に
係合させて抜け止め固定しホイールデイスクから
の突出部分を該デイスクの内径より小径としたた
め、ホイールデイスク、ブレーキドラム等の着脱
がハブカバーを装着したまま行なえ、ハブカバー
の着脱も容易に行なえる等点検整備性を大幅に向
上させるものである。 As explained above, according to the present invention, it is possible to promote compactness and light weight as much as possible by improving the speed reduction mechanism, and the hub cover is fitted onto the end circumferential surface of the wheel hub, and the bolt head screwed onto the hub circumferential surface. is fixed to prevent it from coming off by engaging with a small hole formed in the hub cover that is easy to machine and has a constant diameter in the axial direction.The protruding part from the wheel disc has a diameter smaller than the inner diameter of the disc, making it easy to attach and detach the wheel disc, brake drum, etc. This greatly improves the ease of inspection and maintenance, as it can be done with the hub cover attached, and the hub cover can be easily attached and detached.
図は本考案の一実施例を示す断面図である。
１……アクスルシヤフト、５……リングギヤ、
６……アクスルチユーブ、９……ホイールハブ、
９ａ……ねじ孔、１１……サンギヤ、１２……プ
ラネタリギヤ、１８……ハブカバー、１８ａ……
小孔、２０……ブレーキドラム、２１……ホイー
ルデイスク。
The figure is a sectional view showing an embodiment of the present invention. 1...Axle shaft, 5...Ring gear,
6...Axle tube, 9...Wheel hub,
9a...Screw hole, 11...Sun gear, 12...Planetary gear, 18...Hub cover, 18a...
Small hole, 20...brake drum, 21...wheel disc.
Claims (1)
にインナ及びアウタベアリングを介してホイール
ハブを軸支する一方、内周面に歯を形成したリン
グギヤを該リングギヤ外径と略同形又はこれより
小径に形成されたアクスルシヤフトの外端部に動
力伝達される構造で連結し、外周面に歯を形成し
たサンギヤをアクスルチユーブの外端部に装着す
ると共に、前記両ギヤを噛み合い連動させるプラ
ネタリギヤをホイールハブの外側に配設したプラ
ネタリキヤリアに軸着し、該プラネタリキヤリア
を前記リングギヤより内径側に配設した締付部材
を介してホイールハブの外端面に締付固定し、か
つ、前記ホイールハブのホイールデイスクから外
側に突出する部分及び該ホイールハブの突出端部
外周面に嵌着した薄肉プレス成形金属板からなる
円筒部を有するハブカバーの全周面をホイールデ
イスク内径より小径に形成すると共に、該突出す
る部分は該ハブカバーの開放端面が当接する段付
部を備え、該ハブカバーはその有底端部側に縮径
したテーパ形状を備え、ハブカバーのホイールハ
ブとの嵌合部に軸方向に孔径一定の小孔を設け、
ホイールハブ外周面に螺着したボルトの頭部を前
記ハブカバーの小孔に係合させてハブカバーを抜
け止め固定したことを特徴とする車両用ハブ減速
装置。 A wheel hub is pivotally supported by an axle tube that supports an axle shaft through inner and outer bearings, and a ring gear having teeth formed on its inner circumferential surface is formed on an axle having a diameter substantially the same as or smaller than the outer diameter of the ring gear. A sun gear connected to the outer end of the shaft in a structure that transmits power and having teeth formed on its outer circumferential surface is attached to the outer end of the axle tube, and a planetary gear that meshes and interlocks both gears is arranged on the outside of the wheel hub. The planetary carrier is fixed to the outer end surface of the wheel hub via a tightening member disposed on the inner diameter side of the ring gear, and The entire circumferential surface of the hub cover, which has a cylindrical portion made of a thin press-formed metal plate fitted to the outer circumferential surface of the protruding end of the wheel hub, is formed to have a smaller diameter than the inner diameter of the wheel disk, and the protruding portion is The hub cover has a stepped part that the open end surface of the hub cover comes into contact with, the hub cover has a tapered shape with a reduced diameter on the bottomed end side, and a small hole with a constant diameter is formed in the axial direction at the part of the hub cover that fits with the wheel hub. established,
A vehicle hub speed reducer, characterized in that the head of a bolt screwed onto the outer peripheral surface of a wheel hub is engaged with a small hole in the hub cover to prevent the hub cover from coming off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981025243U JPH0121045Y2 (en) | 1981-02-26 | 1981-02-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981025243U JPH0121045Y2 (en) | 1981-02-26 | 1981-02-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57139404U JPS57139404U (en) | 1982-08-31 |
| JPH0121045Y2 true JPH0121045Y2 (en) | 1989-06-23 |
Family
ID=29822945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981025243U Expired JPH0121045Y2 (en) | 1981-02-26 | 1981-02-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0121045Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008044460A (en) * | 2006-08-11 | 2008-02-28 | Toyota Industries Corp | Hub structure and assembling method for hub |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4023850Y1 (en) * | 1964-04-27 | 1965-08-14 |
-
1981
- 1981-02-26 JP JP1981025243U patent/JPH0121045Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4023850Y1 (en) * | 1964-04-27 | 1965-08-14 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008044460A (en) * | 2006-08-11 | 2008-02-28 | Toyota Industries Corp | Hub structure and assembling method for hub |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57139404U (en) | 1982-08-31 |
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