JPH03157202A - Bolt press-in part structure for hub - Google Patents
Bolt press-in part structure for hubInfo
- Publication number
- JPH03157202A JPH03157202A JP29522389A JP29522389A JPH03157202A JP H03157202 A JPH03157202 A JP H03157202A JP 29522389 A JP29522389 A JP 29522389A JP 29522389 A JP29522389 A JP 29522389A JP H03157202 A JPH03157202 A JP H03157202A
- Authority
- JP
- Japan
- Prior art keywords
- hub
- bolt
- bolt hole
- press
- rotor
- 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
- 230000002093 peripheral effect Effects 0.000 abstract description 11
- 230000000717 retained effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、車両の車輪に使用されるハブのボルト圧入
部構造の改良に関し、特に、ハブのボルト孔にハブボル
トを圧入した際のボルト孔内周面の変形の影響をなくし
、このハブボルトに共締めされるブレーキのロータやホ
イールの面振れをなくすようにしたハブのボルト圧入部
構造に関する。[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to an improvement in the structure of a bolt press-fit part of a hub used in a vehicle wheel, and in particular, to improve the bolt hole structure when a hub bolt is press-fitted into a hub bolt hole. This invention relates to a bolt press-fitting structure for a hub that eliminates the influence of deformation of the inner circumferential surface and eliminates surface runout of a brake rotor or wheel that is fastened together with the hub bolt.
［従来の技術］
従来のハブのボルト圧入部構造としては、例えば、実開
昭６１−１２７００１号公報に記載されたものが知られ
ている。[Prior Art] As a conventional hub bolt press-fitting structure, for example, one described in Japanese Utility Model Application Publication No. 127001/1983 is known.
この従来構造は、第２図に示すように、ハブ１に形成し
たボルト孔１ａにハブボルト２を圧入し、このハブボル
ト２に、ブレーキのロータ３とホイール４とを、ワッシ
ャ５を介してハブナツト６により共締めしている。In this conventional structure, as shown in FIG. 2, a hub bolt 2 is press-fitted into a bolt hole 1a formed in a hub 1, and a brake rotor 3 and a wheel 4 are attached to the hub bolt 2 through a washer 5 and a hub nut 6. They are tightened together.
（発明が解決しようとする課題）
しかしながら、このような従来のハブのボルト圧入部構
造にあっては、ハブ１のボルト孔１ａへのハブボルト２
の圧入に伴って、ボルト孔１ａの内周面部分が圧入の方
向に変形し、ボルト孔１ａの内周面部分と、圧入された
ハブボルト２の先端側のハブｌの側面とのなす角部が浮
き上がってしまっていた。(Problem to be Solved by the Invention) However, in such a conventional hub bolt press-fitting structure, the hub bolt 2 is inserted into the bolt hole 1a of the hub 1.
With the press-fitting, the inner circumferential surface of the bolt hole 1a deforms in the direction of press-fitting, and the corner formed by the inner circumferential surface of the bolt hole 1a and the side surface of the hub l on the tip side of the press-fitted hub bolt 2. had risen to the surface.
この浮き上がりの変形量は、本発明者の実測の一例とし
ては、浮き上がりの高さＡが０．０３５ｍｍ。As an example of the deformation amount of this lifting, the height A of the lifting is 0.035 mm as an example actually measured by the inventor.
浮き上がり部分のボルト孔１ａの内周面からの幅Ｂが２
．０５ｍｍ程度のものである。The width B from the inner peripheral surface of the bolt hole 1a of the raised part is 2
．． It is about 0.05 mm.
このため、ハブボルト２に共締めされるロータ３及びホ
イール４がハブｌの側面に密着して固定されず、走行中
のホイール４や、制動時のロータ３に面振れが生じ、走
行や制動に悪影響があるという問題点があった。For this reason, the rotor 3 and wheel 4, which are jointly fastened to the hub bolt 2, are not tightly fixed to the side surface of the hub l, and surface runout occurs in the wheel 4 during running and in the rotor 3 during braking, resulting in poor running and braking. There was a problem that it had an adverse effect.
この発明は、このような従来の問題点に着目してなされ
たもので、ハブ側面の平面度を良くし、ハブボルト２に
共締めされるロータやホイールに面振れが発生せず、走
行や制動を安定させるようにしたハブのボルト圧入部構
造を提供することを目的とするものである。This invention was made by focusing on these conventional problems, and improves the flatness of the side surface of the hub, so that surface runout does not occur on the rotor and wheel that are fastened together with the hub bolt 2, and it is possible to improve running and braking. The object of the present invention is to provide a bolt press-fitting structure for a hub that is stabilized.
そこで、この発明に係わるハブのボルト圧入部構造は、
ハブに形成したボルト孔にハブボルトを圧入するハブの
ボルト圧入部構造において、ハブのボルト孔の内周面と
、圧入されたハブボルトの先端側のハブの側面とのなす
円周状の角部に、座ぐりを形成したことを特徴とするも
のである。Therefore, the structure of the bolt press-fit portion of the hub according to the present invention is as follows:
In the bolt press-fit structure of the hub, in which the hub bolt is press-fitted into the bolt hole formed in the hub, the circumferential corner formed by the inner peripheral surface of the hub bolt hole and the side surface of the hub on the tip side of the press-fitted hub bolt is , is characterized by forming a counterbore.
〔作用〕
ハブのボルト孔にハブボルトを圧入すると、ボルト孔の
内周面が圧入方向に変形し、ボルト孔の内周面と側面と
のなす円周状の角部が浮き上がるが、この浮き上がりの
変形は、角部に形成した座ぐりの内部に収まるので、ハ
ブの側面より出ることはなく、ハブ側面の平面度が保た
れる。従って、ハブの側面に密着してロータ及びホイー
ル４が共締めされ、これらのロータやホイールが面振れ
することが防止され、走行と制動の安定が保持される。[Operation] When a hub bolt is press-fitted into a hub bolt hole, the inner circumferential surface of the bolt hole is deformed in the press-fitting direction, and the circumferential corner formed by the inner circumferential surface of the bolt hole and the side surface is lifted up. Since the deformation is contained within the counterbore formed at the corner, it does not extend beyond the side surface of the hub, and the flatness of the side surface of the hub is maintained. Therefore, the rotor and wheel 4 are tightly fastened to the side surface of the hub, preventing the rotor and wheel from wobbling, and maintaining stability in running and braking.
以下、この発明の一実施例を図面を参照して説明する。 An embodiment of the present invention will be described below with reference to the drawings.
まず構成を説明する。First, the configuration will be explained.
第１図において、ハブ１にボルト孔１ａが形成され、さ
らに、このボルト孔１ａの内周面と、ボルト孔１ａにハ
ブボルト２を圧入した場合のハブボルト２の先端側のハ
ブ１の側面とのなす円周状の角部に座ぐり１ｂを形成す
る。In FIG. 1, a bolt hole 1a is formed in the hub 1, and the inner peripheral surface of the bolt hole 1a and the side surface of the hub 1 on the tip side of the hub bolt 2 when the hub bolt 2 is press-fitted into the bolt hole 1a are shown in FIG. A counterbore 1b is formed at the circumferential corner.
この座ぐり１ｂの具体的な寸法は、前述した浮き上がり
の変形量を考慮して、例えば、内周面からの幅Ｃを２１
１Ｉ１１１、深さを１躯程度とすればよい。The specific dimensions of this counterbore 1b are, for example, width C from the inner circumferential surface 21
1I111, the depth should be about 1 inch.
このように座ぐり１ｂを形成したボルト孔１ａにハブボ
ルト２を圧太し、このハブボルト２に、ロータ３とホイ
ール４とを、ワッシャ５を介してハブナツト６により共
締めする。A hub bolt 2 is pressed into the bolt hole 1a in which the counterbore 1b is formed in this way, and a rotor 3 and a wheel 4 are jointly tightened to the hub bolt 2 with a hub nut 6 through a washer 5.
次ぎに上記実施例の動作を説明する。Next, the operation of the above embodiment will be explained.
座ぐり１ｂを形成したハブ１のボルト孔１ａにハブボル
ト２を圧入すると、ボルト孔１ａの内周面がハブボルト
２の圧入方向に変形し、座ぐり１ｂがない場合と同様に
、ボルト孔１ａの内周面と座ぐり１ｂの底面とのなす角
部が変形して浮き上がるが、この浮き上がりは座ぐり１
ｂの範囲内に収まる。従って、変形の浮き上がりはハブ
１の側面より出っ張ることがなく、ハブ１の側面の平面
度が維持され、共締めされるロータ３がハブ１の側面に
かつホイール４がロータ３の側面に、それぞれ密着して
固定される。このため、ロータ３やホイール４の回転に
面振れがなくなり、走行及び制動が安定する。When the hub bolt 2 is press-fitted into the bolt hole 1a of the hub 1 in which the counterbore 1b is formed, the inner peripheral surface of the bolt hole 1a is deformed in the direction in which the hub bolt 2 is press-fitted. The corner formed by the inner peripheral surface and the bottom of counterbore 1b is deformed and floats up, but this uplift is caused by counterbore 1b.
It falls within the range of b. Therefore, the deformation does not protrude from the side surface of the hub 1, the flatness of the side surface of the hub 1 is maintained, and the rotor 3 and the wheel 4, which are fastened together, are on the side surface of the hub 1 and the wheel 4 is on the side surface of the rotor 3, respectively. It is tightly fixed. Therefore, there is no surface runout in the rotation of the rotor 3 or wheel 4, and running and braking are stabilized.
以上説明したように、この発明に係わるハブのボルト圧
入部構造によれば、ハブのボルト孔の内周面と、圧入さ
れたハブボルトの先端側のハブの側面とのなす円周状の
角部に、座ぐりを形成した構成としたため、ハブのボル
ト孔にハブボルトを圧入した際のボルト孔の内周面の変
形による浮き上がりが、座ぐりの内部に収まって、ハブ
の側面から出っ張らずに側面の平面度が保たれ、このた
め、ハブの側面にロータがかつロータの側面にホイール
が密着して共締めされ、ロータとホイールの面振れがな
（、走行と制動が安定するという効果が得られる。As explained above, according to the bolt press-fitting structure of the hub according to the present invention, the circumferential corner formed by the inner peripheral surface of the bolt hole of the hub and the side surface of the hub on the tip side of the press-fitted hub bolt In addition, since the configuration has a counterbore, the lifting caused by deformation of the inner peripheral surface of the bolt hole when the hub bolt is press-fitted into the bolt hole of the hub is contained within the counterbore, and the side surface of the hub does not protrude from the side of the hub. Flatness is maintained, and as a result, the rotor is tightly attached to the side of the hub, and the wheel is tightly tightened to the side of the rotor, resulting in no surface runout between the rotor and wheel (and stable running and braking). .
第１図はこの発明に係わるハブのボルト圧入部構造の一
実施例を示す断面図、第２図は従来のハブのボルト圧入
部構造の一例を示す第１図と同様の断面図である。
１・・・ハブ、１ａ・・・ボルト孔、１ｂ・・・座ぐり
、２・・・ハブボルト、３・・・ロータ、４・・・ホイ
ール、６・・・ハブナツト。FIG. 1 is a sectional view showing an embodiment of the bolt press-fitting structure of a hub according to the present invention, and FIG. 2 is a sectional view similar to FIG. 1 showing an example of the bolt press-fitting structure of a conventional hub. DESCRIPTION OF SYMBOLS 1...Hub, 1a...Bolt hole, 1b...Spot face, 2...Hub bolt, 3...Rotor, 4...Wheel, 6...Hub nut.
Claims (1)
ボルト圧入部構造において、前記ハブの前記ボルト孔の
内周面と、圧入された前記ハブボルトの先端側の前記ハ
ブの側面とのなす円周状の角部に、座ぐりを形成したこ
とを特徴とするハブのボルト圧入部構造。In a bolt press-fitting structure of a hub in which a hub bolt is press-fitted into a bolt hole formed in the hub, a circumferential shape formed by an inner circumferential surface of the bolt hole of the hub and a side surface of the hub on the tip side of the press-fitted hub bolt. A hub bolt press-fit structure characterized by a counterbore formed in the corner of the hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29522389A JPH03157202A (en) | 1989-11-14 | 1989-11-14 | Bolt press-in part structure for hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29522389A JPH03157202A (en) | 1989-11-14 | 1989-11-14 | Bolt press-in part structure for hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03157202A true JPH03157202A (en) | 1991-07-05 |
Family
ID=17817805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29522389A Pending JPH03157202A (en) | 1989-11-14 | 1989-11-14 | Bolt press-in part structure for hub |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03157202A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003025802A (en) * | 2001-07-18 | 2003-01-29 | Koyo Seiko Co Ltd | Wheel fitting structure in wheel bearing device |
| WO2003072973A1 (en) * | 2002-02-28 | 2003-09-04 | Nsk Ltd. | Bearing unit for wheels |
| WO2003072974A1 (en) * | 2002-02-28 | 2003-09-04 | Nsk Ltd. | Bearing unit for wheels |
| EP2241453A2 (en) | 2006-05-22 | 2010-10-20 | JTEKT Corporation | Rolling bearing device for wheels |
| US9637466B2 (en) | 2013-07-25 | 2017-05-02 | Dic Corporation | Liquid crystal compound having 2, 6-difluorophenyl ether structure and liquid crystal composition thereof |
-
1989
- 1989-11-14 JP JP29522389A patent/JPH03157202A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003025802A (en) * | 2001-07-18 | 2003-01-29 | Koyo Seiko Co Ltd | Wheel fitting structure in wheel bearing device |
| WO2003072973A1 (en) * | 2002-02-28 | 2003-09-04 | Nsk Ltd. | Bearing unit for wheels |
| WO2003072974A1 (en) * | 2002-02-28 | 2003-09-04 | Nsk Ltd. | Bearing unit for wheels |
| EP2241453A2 (en) | 2006-05-22 | 2010-10-20 | JTEKT Corporation | Rolling bearing device for wheels |
| US9637466B2 (en) | 2013-07-25 | 2017-05-02 | Dic Corporation | Liquid crystal compound having 2, 6-difluorophenyl ether structure and liquid crystal composition thereof |
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