JPH07186601A - Vehicular hub - Google Patents
Vehicular hubInfo
- Publication number
- JPH07186601A JPH07186601A JP33500793A JP33500793A JPH07186601A JP H07186601 A JPH07186601 A JP H07186601A JP 33500793 A JP33500793 A JP 33500793A JP 33500793 A JP33500793 A JP 33500793A JP H07186601 A JPH07186601 A JP H07186601A
- Authority
- JP
- Japan
- Prior art keywords
- hub
- bearing
- screw hole
- present
- center
- 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
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、車両用のブレーキ部
品、特に中型トラックのフロントハブの軽量化に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to weight reduction of brake parts for vehicles, especially front hubs of medium-duty trucks.
【０００２】[0002]
【従来の技術】トラック用ブレーキ部品としては、主に
ドラム型ブレーキ部品が使用されている。図３に示すよ
うに、ハブ１はフランジ２にブレーキドラム取付け孔３
（通常、フランジ円周上に等間隔で６個設けられてい
る）を有する。そして、図３に示す如く、ハブ１とブレ
ーキドラム５は、フランジ２の取付け孔３を介して、ボ
ルト４により固着されて使用される。ハブ１は強度と靱
性が要求されるため高強度の球状黒鉛鋳鉄（ＦＣＤ４０
０相当）が使用される。なお、図４において、上側１６
が車体側に位置する。2. Description of the Related Art As brake parts for trucks, drum type brake parts are mainly used. As shown in FIG. 3, the hub 1 has a flange 2 and a brake drum mounting hole 3
(Usually, six pieces are provided on the circumference of the flange at equal intervals). Then, as shown in FIG. 3, the hub 1 and the brake drum 5 are fixed to each other with bolts 4 through the mounting holes 3 of the flange 2 for use. Since the hub 1 is required to have strength and toughness, the high strength spheroidal graphite cast iron (FCD40
0) is used. In FIG. 4, the upper side 16
Is located on the vehicle body side.
【０００３】[0003]
【発明が解決しようとする課題】近年、車両の軽量化要
求がますます強くなり、車両を構成する各部品毎に軽量
化が要望され、その結果として、車両の軽量化を達成し
ようとする傾向にある。本発明はこの課題に鑑みてなさ
れたものであり、その目的とするところは、車両のブレ
ーキ部品の一つであるハブの従来形状について研究した
結果、剛性を落すことなく軽量化を達成することができ
るハブを提供するものである。In recent years, demands for weight reduction of vehicles have become stronger and stronger, and there is a demand for weight reduction of each component constituting the vehicle. As a result, there is a tendency to achieve weight reduction of vehicles. It is in. The present invention has been made in view of this problem, and an object of the present invention is to achieve weight reduction without lowering rigidity as a result of research on a conventional shape of a hub that is one of vehicle brake parts. It provides a hub that can
【０００４】[0004]
【課題を解決するための手段】本発明者は、上記目的に
鑑みて鋭意研究の結果、本発明を完成した。すなわち、
車両用ハブのグリース充填部側壁が車体側のベアリング
受座部からグリース溜り部底面のベアリングレース位置
まで延設された略均一な薄肉側壁を有すると共に、ブレ
ーキドラム取付ねじ孔の中心とベアリングキャップ取付
ねじ穴の中心とハブの中心が平面視で一直線上に位置す
るように形成したことを特徴としている。ここで、ベア
リングキャップ取付ねじ穴のボス部とリブとを複数の位
置で連接している。The present inventor has completed the present invention as a result of earnest research in view of the above object. That is,
The grease-filled side wall of the vehicle hub has an approximately uniform thin side wall that extends from the bearing seat on the vehicle body side to the bearing race position on the bottom of the grease reservoir, and the center of the brake drum mounting screw hole and the bearing cap mounting It is characterized in that the center of the screw hole and the center of the hub are formed so as to be aligned with each other in a plan view. Here, the boss portion of the bearing cap mounting screw hole and the rib are connected at a plurality of positions.
【０００５】[0005]
【実施例及び作用】以下本発明につき、図を参照して説
明する。図１および図２は本発明の一実施例による車両
用ハブを示す。図１は図２のＢ−Ｂ矢視断面図である。
図２は図１のＡ−Ａ矢視図である。図３はハブとブレー
キドラムとの組立断面図である。図４は車両用ハブの斜
視図である。図１において、１６は車体側を示し、その
反対方向は外側を示す。ハブは、テーパーローラーベア
リング（図示せず）装着部１０、１１を有し、１０と１
１の中間位置にグリース充填部４、そしてフランジ２よ
りなる。３はブレーキドラム取付け孔（図２に示すごと
く６ヶ所）、９はベアリングキャップ取付ねじ穴（図２
に示すごとく３ヶ所）である。従来品のハブにおいて
は、ベアリング受座部１２から従来品のグリース溜り部
底面１４にかけてグリース充填部内壁６を有する厚い側
壁が形成されていた。The present invention will be described below with reference to the drawings. 1 and 2 show a vehicle hub according to an embodiment of the present invention. 1 is a sectional view taken along the line BB of FIG.
FIG. 2 is a view on arrow AA of FIG. FIG. 3 is an assembled sectional view of the hub and the brake drum. FIG. 4 is a perspective view of the vehicle hub. In FIG. 1, 16 indicates the vehicle body side, and the opposite direction indicates the outside. The hub has taper roller bearing (not shown) mounting portions 10 and 11, and 10 and 1
A grease filling portion 4 and a flange 2 are provided at an intermediate position of 1. 3 is a brake drum mounting hole (6 places as shown in FIG. 2), 9 is a bearing cap mounting screw hole (FIG. 2)
There are 3 locations as shown in. In the hub of the conventional product, a thick side wall having the inner wall 6 of the grease-filled portion is formed from the bearing seat 12 to the bottom surface 14 of the grease reservoir of the conventional product.
【０００６】本発明においては、ベアリング受座部１２
の肉厚を削減しながら本発明のグリース充填部内壁５を
有する略均一な肉厚の壁を本発明のグリース溜り部底面
１５の位置まで延設させたものである。位置１５はベア
リングレース位置１３の近傍まで形成されている。７の
斜線部は、本発明における肉ぬすみ部を示している。こ
のようにして、厚い側壁を薄い側壁に形成した。この肉
ぬすみ部７による剛性低下を補充するために図１に示す
如くリブ盛り付け部８を付与した。詳述すると、図２に
おいて、従来品のリブ幅１７の両側にそれぞれリブ幅増
部１８を付与した。従来品のボス１９（３ヶ所）の位置
を、図２に示す如く、本発明におけるボス２０の位置に
移設し、ブレーキドラム取付ねじ孔の中心とベアリング
キャップ取付ねじ穴の中心とハブの中心とが平面視で一
直線上に位置する部位を３ヶ所設けた。このことより、
ブレーキドラム取付ねじ孔とベアリングキャップ取付ね
じ穴の位置が近接しかつ一直線上に位置することから強
度アップにも寄与する。ところで、自動車部品等の設計
を行うに際して、発泡ウレタンモデルを使って剛性や応
力解析を行う手法（ＭＡＣＤＡと呼ばれる）は、実物大
による試験結果と非常によく一致する値を得ることがで
きることから一般に行なわれているところである。本発
明者は、発泡ウレタンモデルを使って従来品と本発明品
の応力値（ｋｇｆ／ｍｍ2 ）と剛性値（ｇｆ／ｍｍ）を
測定した。In the present invention, the bearing seat portion 12
The wall having a substantially uniform thickness having the inner wall 5 of the grease-filled portion of the present invention is extended to the position of the bottom surface 15 of the grease reservoir of the present invention while reducing the wall thickness. Position 15 is formed up to the vicinity of bearing race position 13. The shaded portion 7 indicates the meat swelled portion in the present invention. In this way, the thick side wall was formed into the thin side wall. In order to supplement the decrease in rigidity due to the meat thinned portion 7, a rib mounting portion 8 is provided as shown in FIG. More specifically, in FIG. 2, rib width increasing portions 18 are provided on both sides of the rib width 17 of the conventional product. As shown in FIG. 2, the positions of the bosses 19 (three places) of the conventional product are moved to the positions of the bosses 20 in the present invention so that the center of the brake drum mounting screw hole, the center of the bearing cap mounting screw hole, and the center of the hub are moved. Was provided in three places located on a straight line in plan view. From this,
The positions of the brake drum mounting screw hole and the bearing cap mounting screw hole are close to each other and on a straight line, which contributes to an increase in strength. By the way, when designing automobile parts, etc., a method (called MACDA) of performing rigidity and stress analysis using a urethane foam model can generally obtain a value that is very well in agreement with the actual size test result. This is being done. The present inventor measured the stress value (kgf / mm 2 ) and rigidity value (gf / mm) of the conventional product and the product of the present invention using the urethane foam model.
【０００７】図２において、σ6 、σ5 、σ4 の各位置
と中心を結ぶ線上において、フランジ部に荷重を種々か
けながら、レーザー変位計で測定しつつ、ウレタンモデ
ルの形状を前述のごとく決定した。なお、荷重点Ｋ、
Ｌ、Ｍ、は図４を引用して示す位置、またＰは図２に示
すリブ部の位置である。すなわち、肉ぬすみ部７（斜線
部分）を削除することによってハブ１の軽量化を図ると
共に、剛性値を従来品と同様あるいはそれ以上に維持す
るために従来品のリブ幅部１７の両側にリブ幅増部１８
を付与して、外側リブ幅を厚くした。また、従来品のベ
アリングキャップ取付ねじ穴のボス１９の位置（３ヶ
所）を、平面視で、ブレーキドラム取付ねじ孔の中心と
ハブの中心とを結ぶ線上にボス２０の中心が位置するよ
うに移設した構造とした。In FIG. 2, the shape of the urethane model is as described above while measuring with a laser displacement meter while applying various loads to the flange on the line connecting the positions of σ 6 , σ 5 and σ 4 and the center. Were determined. The load point K,
L and M are positions shown by quoting FIG. 4, and P is a position of the rib portion shown in FIG. That is, the weight reduction of the hub 1 is achieved by removing the meat-thickened portion 7 (hatched portion), and ribs are provided on both sides of the rib width portion 17 of the conventional product in order to maintain the rigidity value equal to or higher than that of the conventional product. Widening part 18
Was added to thicken the outer rib width. In addition, the positions of the bosses 19 (three places) of the bearing cap mounting screw hole of the conventional product are so arranged that the center of the boss 20 is located on the line connecting the center of the brake drum mounting screw hole and the center of the hub in plan view. The structure was relocated.
【０００８】[0008]
【表１】 [Table 1]
【０００９】以上のハブ構造の形状変更によって、表１
の結果を得た。この結果から下記（１）、（２）を確認
できた。 （１）応力値は従来品に対して若干高い部分があるが問
題を生ずる程ではない。 （２）剛性値は本発明品の各荷重点すべてにおいて従来
品の剛性値よりも上まわっている。 そして、この場合の軽量化重量は１２７０ｇ（計算重
量）であった。この値は、実物大のハブにおいて１２％
の重量低減が期待できるものである。以上、本発明は、
中型トラックのフロントハブについて説明したが、本発
明の思想はこれに限定されるものではなく、他の車種の
ハブにおいても適用できるものである。By changing the shape of the hub structure described above, Table 1
Got the result. From these results, the following (1) and (2) were confirmed. (1) Although the stress value is slightly higher than that of the conventional product, it does not cause a problem. (2) The rigidity value exceeds the rigidity value of the conventional product at all load points of the product of the present invention. The weight reduction weight in this case was 1270 g (calculated weight). This value is 12% for a full-scale hub
It can be expected to reduce the weight. As described above, the present invention is
Although the front hub of the medium-duty truck has been described, the idea of the present invention is not limited to this, and can be applied to hubs of other vehicle types.
【００１０】[0010]
【発明の効果】本発明の車両用ハブは、従来品の剛性値
以上の値を有しかつ１０％以上の軽量化を達成できるの
で、車両の軽量化への寄与は効果大である。The vehicle hub of the present invention has a rigidity value equal to or higher than that of a conventional product and can achieve a weight reduction of 10% or more. Therefore, the contribution to the vehicle weight reduction is significant.
【図１】本発明の一実施例によるハブの図２に示すＢ−
Ｂ矢視断面図である。FIG. 1 is a view of a hub according to an embodiment of the present invention shown in FIG.
FIG.
【図２】本発明の図１のＡ−Ａ矢視図である。FIG. 2 is a view taken along the line AA of FIG. 1 of the present invention.
【図３】従来品のハブとブレーキドラムとの組立断面図
である。FIG. 3 is an assembled sectional view of a conventional hub and a brake drum.
【図４】従来品のハブの概略斜視図である。FIG. 4 is a schematic perspective view of a conventional hub.
１ ハブ ２ フランジ ３ ブレーキドラム取付孔 ４ グリース充填部 ５ 本発明のグリース充填部内壁 ６ 従来品のグリース充填部内壁 ７ 肉ぬすみ部 ８ リブ盛り付け部 ９ ベアリングキャップ取付ねじ穴 １０ ベアリング装着部 １１ ベアリング装着部 １２ ベアリング受座部 １３ ベアリングレース位置 １４ 従来品のグリース溜り部底面 １５ 本発明のグリース溜り部底面 １６ 車体側 １７ 従来品のリブ幅部 １８ 本発明品でのリブ幅増部 １９ 従来品のベアリングキャップ取付ねじ穴のボス位
置 ２０ 本発明におけるボス ２１ 平面視でのハブの中心1 Hub 2 Flange 3 Brake Drum Mounting Hole 4 Grease Filling Part 5 Inner Wall of Grease Filling Part of the Present Invention 6 Inner Wall of Grease Filling Part of Conventional Product 7 Meat-Thickening Section 8 Rib Mounting Section 9 Bearing Cap Mounting Screw Hole 10 Bearing Mounting Section 11 Bearing Mounting Part 12 Bearing receiving part 13 Bearing race position 14 Conventional grease reservoir bottom surface 15 Grease reservoir bottom surface 16 of the present invention 16 Car body side 17 Conventional rib width portion 18 Rib width increase portion of the present invention 19 Conventional product Boss position of bearing cap mounting screw hole 20 Boss 21 in the present invention 21 Center of hub in plan view
───────────────────────────────────────────────────── フロントページの続き (72)発明者 金丸 弘志 東京都日野市日野台３丁目１番地１ 日野 自動車工業株式会社内 (72)発明者 中山 弘武 東京都日野市日野台３丁目１番地１ 日野 自動車工業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Kanamaru 3-1-1 Hinodai, Hino-shi, Tokyo Hino Motor Co., Ltd. (72) Hirotake Nakayama 3-1-1 1-1 Hinodai, Hino-shi, Tokyo Hino Within Automotive Industry Co., Ltd.
Claims (2)
側のベアリング受座部からグリース溜り部底面のベアリ
ングレース位置まで延設された略均一な薄肉側壁を形成
すると共に、ブレーキドラム取付ねじ孔の中心とベアリ
ングキャップ取付ねじ穴の中心とハブの中心とが平面視
で一直線上に位置する部位を複数箇所設けることを特徴
とする車両用ハブ。1. A grease-filled side wall of a vehicle hub forms a substantially uniform thin side wall extending from a bearing seat on the vehicle body to a bearing race position on the bottom surface of the grease reservoir, and a brake drum mounting screw hole. A hub for a vehicle, characterized in that a plurality of portions are provided such that the center of the bearing, the center of the bearing cap mounting screw hole, and the center of the hub are located on a straight line in a plan view.
ス部とリブとが少なくとも１ヶ所以上連接されているこ
とを特徴とする請求項１に記載の車両用ハブ。2. The vehicle hub according to claim 1, wherein the boss portion of the bearing cap mounting screw hole and the rib are connected to each other at least at one or more places.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33500793A JPH07186601A (en) | 1993-12-28 | 1993-12-28 | Vehicular hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33500793A JPH07186601A (en) | 1993-12-28 | 1993-12-28 | Vehicular hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07186601A true JPH07186601A (en) | 1995-07-25 |
Family
ID=18283701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33500793A Pending JPH07186601A (en) | 1993-12-28 | 1993-12-28 | Vehicular hub |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07186601A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010195202A (en) * | 2009-02-25 | 2010-09-09 | Nsk Ltd | Bearing ring member of hub unit for supporting wheel, and method of manufacturing the same |
-
1993
- 1993-12-28 JP JP33500793A patent/JPH07186601A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010195202A (en) * | 2009-02-25 | 2010-09-09 | Nsk Ltd | Bearing ring member of hub unit for supporting wheel, and method of manufacturing the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20040430 |