JP5325064B2 - Wheel support device - Google Patents

Wheel support device Download PDF

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JP5325064B2
JP5325064B2 JP2009225246A JP2009225246A JP5325064B2 JP 5325064 B2 JP5325064 B2 JP 5325064B2 JP 2009225246 A JP2009225246 A JP 2009225246A JP 2009225246 A JP2009225246 A JP 2009225246A JP 5325064 B2 JP5325064 B2 JP 5325064B2
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cover member
cylindrical support
support device
lower arm
wheel
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JP2011073513A (en
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俊介 多鹿
敏晃 安福
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Daihatsu Motor Co Ltd
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Description

本発明は、車輪のハブを軸支する筒状支持部とロアアーム取り付け部とを有するナックル、及び、前記ハブと前記筒状支持部との車体内側を覆うカバー部材を備え、前記筒状支持部または前記カバー部材の下部に水抜き用切り欠きが形成されている車輪支持装置に関する。   The present invention includes a knuckle having a cylindrical support portion that pivotally supports a hub of a wheel and a lower arm attachment portion, and a cover member that covers a vehicle body inside of the hub and the cylindrical support portion, and the cylindrical support portion Alternatively, the present invention relates to a wheel support device in which a drain notch is formed in a lower part of the cover member.

この種の車輪支持装置に関連する先行技術文献情報として下記に示す特許文献1がある。この特許文献1に記された車輪支持装置では、車輪のハブを軸支するハブベアリングの外方部材(筒状支持部)にはカバー部材が外嵌固定されている。そして、カバー部材の下部の一部には円弧状の水抜き用切り欠き(ドレン)が貫通形成されているので、外部からカバー部材の内部に雨水などの異物が浸入しても、この異物はカバー部材の内部を流れ落ち、水抜き用切り欠きから自然に排出され易い。その結果、錆付きが生じ難くなるため、筒状支持部などに回転速度検出用のエンコーダが設置されている構成でも、このエンコーダに錆が付着して検出精度に影響を及ぼすなどの問題が生じ難い。   There exists patent document 1 shown below as prior art document information relevant to this kind of wheel support apparatus. In the wheel support device described in Patent Document 1, a cover member is fitted and fixed to an outer member (cylindrical support portion) of a hub bearing that pivotally supports a hub of a wheel. An arc-shaped drain notch (drain) is formed in a part of the lower part of the cover member so that even if foreign matter such as rainwater enters the cover member from the outside, the foreign matter It easily flows down from the inside of the cover member and is naturally discharged from the drain notch. As a result, rusting is unlikely to occur, and even with a configuration in which an encoder for detecting the rotational speed is installed on the cylindrical support portion, problems such as adhesion of rust to this encoder and affecting detection accuracy occur. hard.

特開2008−180617号公報(0037段落、図1、図4)JP 2008-180617 A (0037 paragraph, FIG. 1, FIG. 4)

しかし、特許文献1に記された車輪支持装置では、水抜き用切り欠きを細長い形状で設けてあるとはいえ、車両の内側と直接対向するように形成されているために、路面から跳ね上げられた小石や水などがこの水抜き用切り欠きからカバー部材の内部に進入し、場合によっては異物で水抜き用切り欠きが塞がれてしまう虞があった。   However, in the wheel support device described in Patent Document 1, although the drainage notch is provided in an elongated shape, it is formed so as to be directly opposed to the inner side of the vehicle, so it jumps up from the road surface. The pebbles, water, and the like that have entered the inside of the cover member from the drainage notch, and in some cases, the drainage notch may be blocked by foreign matter.

さらに、特許文献1に記された車輪支持装置では、ロアアーム取り付け部の位置とカバー部材の形状次第では、ロアアームをロアアーム取り付け部へ取り付けようとする際に、既に装着済みのカバー部材の下部などがロアアームの先端と干渉し、ロアアームの組み付け作業が困難になるという問題があった。   Furthermore, in the wheel support device described in Patent Document 1, depending on the position of the lower arm attachment portion and the shape of the cover member, when the lower arm is to be attached to the lower arm attachment portion, the lower portion of the already attached cover member, etc. There was a problem that it interfered with the tip of the lower arm, making it difficult to assemble the lower arm.

そこで、本発明の目的は、上に例示した従来技術による車輪支持装置が与える課題に鑑み、路面から跳ね上げられた小石や水がカバー部材の内部により進入し難い車輪支持装置を提供することにある。
また、本発明の他の目的は、カバー部材の取り付け後におけるロアアーム取り付け部へのロアアームの組み付け作業をより容易に行うことのできる車輪支持装置を提供することにある。
Therefore, in view of the problems given by the wheel support device according to the prior art exemplified above, an object of the present invention is to provide a wheel support device in which pebbles and water splashed from the road surface are less likely to enter the inside of the cover member. is there.
Another object of the present invention is to provide a wheel support device that can more easily perform the assembly work of the lower arm to the lower arm attachment portion after the cover member is attached.

本発明による車輪支持装置の第1の特徴構成は、
車輪のハブを軸支する筒状支持部とロアアーム取り付け部とを有するナックル、及び、前記ハブと前記筒状支持部との車体内側を覆うカバー部材を備え、
前記筒状支持部または前記カバー部材の下部に水抜き用切り欠きが形成された車輪支持装置であって、
前記水抜き用切り欠きは、前記車体の外側向きに引退するように前記筒状支持部に形成された凹部を含み、
前記カバー部材の下部に、前記凹部に向けて凹んだ引退部が設けられている点にある。
The first characteristic configuration of the wheel support device according to the present invention is:
A knuckle having a cylindrical support portion and a lower arm mounting portion that pivotally supports a hub of a wheel, and a cover member that covers a vehicle body inside of the hub and the cylindrical support portion,
A wheel support device in which a notch for draining is formed in a lower part of the cylindrical support part or the cover member,
The drainage notch includes a recess formed in the cylindrical support portion so as to retreat outwardly of the vehicle body,
In the lower part of the cover member, there is provided a retracting part that is recessed toward the recessed part.

本発明の第1の特徴構成による車輪支持装置では、車体の外側向きに引退するように筒状支持部に形成された凹部と、この凹部に向けて凹むように形成されたカバー部材の引退部との間隙が実質的な水抜き用通路として働くことになる。この間隙は、水抜き用切り欠きとしての凹部とカバー部材の下部とで囲まれた下方向きの経路を含むことで車両の内側と直接対向せず、しかも、ナックルの内側に引退した箇所に位置するので、そのため、路面から跳ね上げられた小石や水などがカバー部材の内部に進入し難くなった。また、カバー部材の下部が凹部に対応して車体の外側向きに引退するように配置されているため、ロアアームの取り付けの際にも、装着済みのカバー部材とロアアームの先端とが干渉し難いため、ロアアームの組み付け作業が容易になった。   In the wheel support device according to the first characteristic configuration of the present invention, a recess formed in the cylindrical support portion so as to retract toward the outside of the vehicle body, and a retraction portion of the cover member formed so as to be recessed toward the recess. Will act as a substantial drainage passage. This gap includes a downward path surrounded by a recess as a water drain notch and the lower part of the cover member, so that it does not directly face the inside of the vehicle, and is positioned at a position where it is retreated inside the knuckle. Therefore, it is difficult for pebbles, water, and the like jumped up from the road surface to enter the inside of the cover member. In addition, since the lower part of the cover member is disposed so as to retract toward the outside of the vehicle body corresponding to the recess, the attached cover member and the tip of the lower arm do not easily interfere when the lower arm is attached. Assembling work of the lower arm became easy.

本発明に係る車輪支持装置の破断側面図である。It is a fracture side view of the wheel support device concerning the present invention. 本発明に係る車輪支持装置の車体内側から見た正面図である。It is the front view seen from the vehicle body inside of the wheel support device concerning the present invention. 本発明に係る車輪支持装置の斜視図である。It is a perspective view of the wheel support device concerning the present invention. 本発明に係る車輪支持装置のカバー部材を外した要部の斜視図である。It is a perspective view of the principal part which removed the cover member of the wheel support device concerning the present invention. 本発明に係る車輪支持装置のカバー部材の三面図である。It is a three-plane figure of the cover member of the wheel support device concerning the present invention. 図1の要部を取り付け途中のロアアームと共に示す破断側面図である。It is a fracture | rupture side view which shows the principal part of FIG. 1 with the lower arm in the middle of attachment. 図6のさらに要部を示す破断側面図である。It is a fracture | rupture side view which shows the further principal part of FIG.

以下に本発明を実施するための形態について図面を参照しながら説明する。
図1及び図2に示すように、本発明に係る前輪用の車輪支持装置は、車輪1を取り付けるハブ2を軸支するステアリングナックル4を有する。
ステアリングナックル4は、ハブ2を軸心X回りで軸支する筒状支持部4aの他に、車両のストラット20を取り付けるための上部アーム5と、車両のロアアーム21を取り付けるための下部アーム6(ロアアーム取り付け部の一例)と、ステアリング装置のタイロッド22を連結するためのナックルアーム7とを有する。
EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated, referring drawings.
As shown in FIGS. 1 and 2, the wheel support device for a front wheel according to the present invention has a steering knuckle 4 that supports a hub 2 to which the wheel 1 is attached.
The steering knuckle 4 includes an upper arm 5 for attaching a strut 20 of a vehicle and a lower arm 6 (for attaching a lower arm 21 of the vehicle) in addition to a cylindrical support portion 4a that supports the hub 2 around an axis X. An example of a lower arm attachment portion) and a knuckle arm 7 for connecting a tie rod 22 of a steering device.

車輪1のハブ2と筒状支持部4aとの間にはボールベアリング8が介装されており、図3にも示すように、ボールベアリング8の内面側は、筒状支持部4aの内側端部に内嵌されたキャップ18(カバー部材の一例)によって覆われている。
図6に示すように、ハブ2と一体回転するボールベアリング8のインナレース8aの端面には磁性を帯びたエンコーダ9が全周に亘って取り付けられている。他方、ステアリングナックル4の一部には、回転速度検出用の検出素子10が一定の距離のギャップを介してエンコーダ9と対向するように配置されている。
A ball bearing 8 is interposed between the hub 2 of the wheel 1 and the cylindrical support portion 4a. As shown in FIG. 3, the inner surface side of the ball bearing 8 is the inner end of the cylindrical support portion 4a. It is covered with a cap 18 (an example of a cover member) fitted in the part.
As shown in FIG. 6, a magnetic encoder 9 is attached to the end surface of the inner race 8a of the ball bearing 8 that rotates integrally with the hub 2 over the entire circumference. On the other hand, a part of the steering knuckle 4 is provided with a detection element 10 for detecting the rotational speed so as to face the encoder 9 with a gap of a certain distance.

図4に示すように、ステアリングナックル4の筒状支持部4aの下部中央には、軸心Xに沿って車両の外側向きに大きく凹んだ排水用の切り欠き4B(車体の外側向きに引退するように形成された凹部の一例)が形成されている。切り欠き4Bが設けられた筒状支持部4aのさらに中央部の内周面には、キャップ18の内側に侵入した水分を集めて外部にスムースに流し出すための排水溝4Cが形成されている。キャップ18を内嵌状に支持するステアリングナックル4の支持内周面4Sは切削加工されているが、切り欠き4B及び排水溝4Cは鋳造されたステアリングナックル4の鋳肌面に錆止め塗装を施した状態であり、切削加工は施されていない。   As shown in FIG. 4, at the center of the lower portion of the cylindrical support portion 4a of the steering knuckle 4, a drainage notch 4B (retracted toward the outside of the vehicle body) that is greatly recessed along the axis X toward the outside of the vehicle. An example of a concave portion formed in this manner is formed. A drainage groove 4C is formed on the inner peripheral surface of the central portion of the cylindrical support portion 4a provided with the cutout 4B for collecting moisture that has entered the cap 18 and flowing it out smoothly. . The support inner peripheral surface 4S of the steering knuckle 4 that supports the cap 18 in an internally fitted shape is cut, but the cutout 4B and the drainage groove 4C are rust-prevented on the cast skin surface of the cast steering knuckle 4. It is in a state, and no cutting work has been applied.

排水溝4Cは、支持内周面4Sから径方向外側(下側)に段状に凹んだ第1溝部4C1と、第1溝部4C1から傾斜部4CSを経てさらに径方向外側(下側)に段状に凹んだ第2溝部4C2とを含む。排水用の切り欠き4Bが形成されているために、第1溝部4C1と傾斜部4CSと第2溝部4C2とからなる排水溝4Cは、その他の箇所における筒状支持部4aに比して軸心X方向の長さが非常に短くなっており、排水効率が高められている。 Culvert 4C, the first and groove portion 4C 1 recessed stepped into the support inner peripheral surface 4S from the radially outer side (lower side) further radially outward (downward through the inclined portion 4C S from the first groove portion 4C 1 ) Includes a second groove 4C 2 which is recessed stepwise. To cutout 4B for drainage is formed, the drainage groove 4C formed of the first groove portion 4C 1 and the inclined portion 4C S and a second groove 4C 2 Metropolitan, compared to the cylindrical support portion 4a in the other portions Thus, the length in the axial center X direction is very short, and drainage efficiency is enhanced.

図5に示すように、キャップ18は、車両内側に突出したハブボルト2Bの頭部に対応するように車両内側にドーム状に突出したキャップ本体部18aと、キャップ本体部18aの外周から径方向外向きに延出したフランジ部18bと、フランジ部18bの一部から車両の外側に向かって垂直に折り曲がった円筒状の係止部18cとを有する。キャップ18は、円筒状の係止部18cを介してステアリングナックル4の支持内周面4Sに内嵌固定される。   As shown in FIG. 5, the cap 18 includes a cap body portion 18 a that protrudes in a dome shape so as to correspond to the head of the hub bolt 2 B that protrudes toward the inside of the vehicle, and a radially outer side from the outer periphery of the cap body portion 18 a. A flange portion 18b extending in the direction and a cylindrical locking portion 18c bent vertically from a part of the flange portion 18b toward the outside of the vehicle. The cap 18 is fitted and fixed to the support inner peripheral surface 4S of the steering knuckle 4 via a cylindrical locking portion 18c.

フランジ部18bの一部は、車両内側に突出するように折り曲げ加工されることで、キャップ18を支持内周面4Sから取り外す際に工具の先端を受け入れるための被操作部18Tを構成している。被操作部18Tはキャップ18を正面から見て真上方向と、左右の両方向との3箇所に設けられている。
被操作部18Tが設けられていないフランジ部18bの真下方向には、被操作部18Tとは逆に車両外側に突出するように折り曲げ加工された引退部18Dが設けられている。引退部18Dは、筒状支持部4aの切り欠き4Bに向けて凹むことで、切り欠き4B及び排水溝4Cを近接位置から保護し、且つ、筒状支持部4aとキャップ18との間に形成される排水用の間隙の幅を必要最小限に規定する役目を果たしている。
A part of the flange portion 18b is bent so as to protrude to the inside of the vehicle, thereby constituting an operated portion 18T for receiving the tip of the tool when the cap 18 is removed from the support inner peripheral surface 4S. . The operated portion 18T is provided at three locations, that is, a directly upward direction when the cap 18 is viewed from the front and both left and right directions.
A retracting portion 18D that is bent so as to protrude outward of the vehicle is provided in the direction directly below the flange portion 18b where the operated portion 18T is not provided. The retracting portion 18D is recessed toward the notch 4B of the cylindrical support portion 4a, thereby protecting the notch 4B and the drainage groove 4C from the proximity position, and is formed between the cylindrical support portion 4a and the cap 18. It plays the role of regulating the width of the gap for drainage.

図7に示すように、キャップ18の内部からキャップ18の外部に向かう水抜き用通路は、前述した2段階状に連続的に凹んだ溝部4C1,4C2の形状と、引退部18D及び引退部18Dから延びた短い係止部18cとの協働によってジグザグ状の開口部で構成されている。特に、引退部18Dは筒状支持部4aの切り欠き4Bと軸心X方向に沿って近接しているので、ジグザグ状の開口部の最も出口側付近は、軸心X方向の間隙の狭い下方向きの経路空間Vとなっている。この経路空間Vは、車両の内側と直接対向せず、しかも、ステアリングナックル4の内側に引退した箇所に位置するので、路面から跳ね上げられた小石や水などがカバー部材の内部に進入し難くなった。
以上の構成の結果、車輪によって路面から跳ね上げられた小石や水などがキャップ18の内部に非常に進入し難くなっている。また、一旦侵入した小石や水は2段階状に連続的に凹んだ溝部4C1,4C2を介してスムースに排出される。
As shown in FIG. 7, the drainage passage from the inside of the cap 18 to the outside of the cap 18 has the shape of the grooves 4C1 and 4C2 that are continuously recessed in the above-described two steps, the retraction portion 18D, and the retraction portion 18D. A zigzag-shaped opening is formed in cooperation with a short locking portion 18c extending from. In particular, since the retracting portion 18D is close to the notch 4B of the cylindrical support portion 4a along the axial center X direction, the most outlet side vicinity of the zigzag opening is below the narrow gap in the axial center X direction. The path space V is directed. This route space V is not directly opposed to the inside of the vehicle and is located at a position where it is retracted to the inside of the steering knuckle 4, so that pebbles, water, etc. that are splashed up from the road surface do not easily enter the inside of the cover member. became.
As a result of the above configuration, pebbles, water, and the like that are splashed from the road surface by the wheels are very difficult to enter the cap 18. The pebbles and water once intruded are smoothly discharged through the grooves 4C1 and 4C2 that are continuously recessed in two steps.

また、図6に示すように、キャップ18の下部が、車体の外側向きに引退するように配置された引退部18Dとなっているため、キャップ18を取り付け後におけるロアアーム21の組み付け作業が容易になった。組み付け時におけるロアアーム21の先端箇所の円弧状の軌跡Lが図6に示されているが、下部に引退部18Dを備えたキャップ18の形状は軌跡Lと重なり合わない様子が図示されている。すなわち、ロアアーム21の先端箇所がキャップ18と干渉せず、ロアアーム21の組み付け作業を容易に行えることが理解される。   Further, as shown in FIG. 6, since the lower portion of the cap 18 is a retraction portion 18D arranged so as to be retracted toward the outside of the vehicle body, it is easy to assemble the lower arm 21 after the cap 18 is attached. became. FIG. 6 shows an arc-shaped locus L at the tip of the lower arm 21 at the time of assembly, but the shape of the cap 18 provided with the retracting portion 18D in the lower portion does not overlap the locus L. That is, it is understood that the tip portion of the lower arm 21 does not interfere with the cap 18 and the assembly work of the lower arm 21 can be easily performed.

車輪のハブを軸支する筒状支持部と、ハブと筒状支持部との車体内側を覆うカバー部材とを備え、筒状支持部またはカバー部材の下部に水抜き用切り欠きが形成された車輪支持装置の構造として、乗用車や商用車に限らずトラックやバス等にも利用可能である。   A cylindrical support portion that pivotally supports the hub of the wheel and a cover member that covers the inside of the vehicle body of the hub and the cylindrical support portion, and a notch for draining is formed in the lower portion of the cylindrical support portion or the cover member The structure of the wheel support device can be used not only for passenger cars and commercial vehicles but also for trucks and buses.

2 ハブ
4 ステアリングナックル
4a 筒状支持部
4B 切り欠き
4C 排水溝
4C1 第1溝部
4CS 傾斜部
4C2 第2溝部
6 下部アーム(ロアアーム取り付け部)
8 ボールベアリング
9 エンコーダ
10 検出素子
18 キャップ(カバー部材)
18a キャップ本体部
18b フランジ部
18T 被操作部
18D 引退部
L 軌跡
2 Hub 4 Steering knuckle 4a Cylindrical support part 4B Notch 4C Drainage groove 4C 1 1st groove part 4C S inclined part 4C 2 2nd groove part 6 Lower arm (lower arm attachment part)
8 Ball bearing 9 Encoder 10 Detection element 18 Cap (cover member)
18a Cap body part 18b Flange part 18T Operated part 18D Retraction part L Trajectory

Claims (1)

車輪のハブを軸支する筒状支持部とロアアーム取り付け部とを有するナックル、及び、前記ハブと前記筒状支持部との車体内側を覆うカバー部材を備え、
前記筒状支持部または前記カバー部材の下部に水抜き用切り欠きが形成された車輪支持装置であって、
前記水抜き用切り欠きは、前記車体の外側向きに引退するように前記筒状支持部に形成された凹部を含み、
前記カバー部材の下部に、前記凹部に向けて凹んだ引退部が設けられている車輪支持装置。
A knuckle having a cylindrical support portion and a lower arm mounting portion that pivotally supports a hub of a wheel, and a cover member that covers a vehicle body inside of the hub and the cylindrical support portion,
A wheel support device in which a notch for draining is formed in a lower part of the cylindrical support part or the cover member,
The drainage notch includes a recess formed in the cylindrical support portion so as to retreat outwardly of the vehicle body,
A wheel support device, wherein a retraction part that is recessed toward the recess is provided at a lower part of the cover member.
JP2009225246A 2009-09-29 2009-09-29 Wheel support device Active JP5325064B2 (en)

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