JPS6425716U - - Google Patents
Info
- Publication number
- JPS6425716U JPS6425716U JP11960787U JP11960787U JPS6425716U JP S6425716 U JPS6425716 U JP S6425716U JP 11960787 U JP11960787 U JP 11960787U JP 11960787 U JP11960787 U JP 11960787U JP S6425716 U JPS6425716 U JP S6425716U
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- circumferential surface
- rotation sensor
- thermal expansion
- utility
- 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
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 229920005992 thermoplastic resin Polymers 0.000 claims 1
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
第１図は、この考案の一実施例であるロータを
示す断面図である。第２図は、第１図に示す実施
例の一部を示す側面図である。第３図は、この考
案の他の実施例を示す断面図である。第４図は、
第３図に示す実施例の側面図である。第５図は、
第３図に示す実施例の−線に沿う断面図であ
る。第６図は、従来のロータと回転センサを示す
断面図である。
図において、５は磁極、１１，２１はロータ、
１２，２２はロータ本体、１３，２３は樹脂磁石
、１２ａ，２２ａは貫通孔、２２ｂは凸部、２２
ｃは切欠部を示す。
FIG. 1 is a sectional view showing a rotor that is an embodiment of this invention. FIG. 2 is a side view showing a part of the embodiment shown in FIG. 1. FIG. 3 is a sectional view showing another embodiment of this invention. Figure 4 shows
FIG. 4 is a side view of the embodiment shown in FIG. 3; Figure 5 shows
FIG. 4 is a sectional view taken along the - line of the embodiment shown in FIG. 3; FIG. 6 is a sectional view showing a conventional rotor and rotation sensor. In the figure, 5 is a magnetic pole, 11 and 21 are rotors,
12, 22 are rotor bodies, 13, 23 are resin magnets, 12a, 22a are through holes, 22b are convex portions, 22
c indicates a notch.
Claims (1)
うに該回転体の外周面に取付けられるリング状の
ロータ本体と、 前記ロータ本体の外周面に取付けられ、交互に
逆極性の部分を周面に沿つて有するリング状の樹
脂磁石とを備え、 前記ロータ本体の熱膨張係数の値が、回転体の
熱膨張係数の値と樹脂磁石の熱膨張係数の値との
間の範囲内にある、回転センサ用ロータ。 (2) 前記回転体は鉄族金属からなり、前記樹脂
磁石は熱可塑性樹脂に磁石粉を混合してなり、前
記ロータ本体の熱膨張係数の値は１５×１０−６
／℃〜３０×１０−６／℃である、実用新案登録
請求の範囲第１項記載の回転センサ用ロータ。 (3) 前記ロータ本体はシリコンを含有したアル
ミニウム合金からなる、実用新案登録請求の範囲
第２項記載の回転センサ用ロータ。 (4) 前記ロータ本体は、前記範囲内で熱膨張係
数の異なる多層体により構成されている、実用新
案登録請求の範囲第１，２または３項に記載の回
転センサ用ロータ。 (5) 前記ロータ本体の外周面および前記樹脂磁
石の内周面の一方に凸部が、他方に凹部が形成さ
れ、該凸部と凹部が嵌合している、実用新案登録
請求の範囲第１〜４項のいずれか１項に記載の回
転センサ用ロータ。 (6) 前記回転体の外周面と前記ロータ本体の内
周面とが圧接して取付けられることにより、回転
体およびロータ本体に圧縮応力が残留している、
実用新案登録請求の範囲第１〜５項のいずれか１
項に記載の回転センサ用ロータ。 (7) 前記ロータ本体の外周面と前記樹脂磁石の
内周面とが圧接して取付けられることにより、ロ
ータ本体および樹脂磁石に圧縮応力が残留してい
る、実用新案登録請求の範囲第１〜６項のいずれ
か１項に記載の回転センサ用ロータ。[Claims for Utility Model Registration] (1) A ring-shaped rotor body attached to the outer peripheral surface of the rotating body to rotate together with the rotating body to be detected; a ring-shaped resin magnet having a portion of opposite polarity along the circumferential surface, and the value of the thermal expansion coefficient of the rotor body is equal to the value of the thermal expansion coefficient of the rotating body and the value of the thermal expansion coefficient of the resin magnet. Rotor for rotation sensor within the range between. (2) The rotating body is made of iron group metal, the resin magnet is made of a thermoplastic resin mixed with magnet powder, and the rotor body has a coefficient of thermal expansion of 15×10 −6
/°C to 30×10 −6 /°C, the rotor for a rotation sensor according to claim 1 of the utility model registration claim. (3) The rotor for a rotation sensor according to claim 2, wherein the rotor body is made of an aluminum alloy containing silicon. (4) The rotor for a rotation sensor according to claim 1, 2 or 3, wherein the rotor main body is constituted by a multilayer body having different coefficients of thermal expansion within the range. (5) Utility model registration claim 1, wherein a convex portion is formed on one of the outer circumferential surface of the rotor body and an inner circumferential surface of the resin magnet, and a concave portion is formed on the other, and the convex portion and the concave portion are fitted. The rotor for a rotation sensor according to any one of items 1 to 4. (6) Compressive stress remains in the rotating body and the rotor body due to the fact that the outer circumferential surface of the rotating body and the inner circumferential surface of the rotor body are attached in pressure contact with each other;
Any one of claims 1 to 5 for utility model registration
The rotor for the rotation sensor described in section. (7) Utility model registration claims 1 to 3, wherein compressive stress remains in the rotor body and the resin magnets due to the fact that the outer circumferential surface of the rotor body and the inner circumferential surface of the resin magnets are attached in pressure contact with each other. The rotor for a rotation sensor according to any one of Item 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11960787U JPS6425716U (en) | 1987-08-04 | 1987-08-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11960787U JPS6425716U (en) | 1987-08-04 | 1987-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6425716U true JPS6425716U (en) | 1989-02-13 |
Family
ID=31364983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11960787U Pending JPS6425716U (en) | 1987-08-04 | 1987-08-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6425716U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0383873U (en) * | 1989-12-14 | 1991-08-26 | ||
| JP2005214874A (en) * | 2004-01-30 | 2005-08-11 | Nsk Ltd | Encoder, and rolling bearing equipped with encoder |
| JP2020053590A (en) * | 2018-09-27 | 2020-04-02 | 日立金属株式会社 | Yoke-integrated bonded magnet and manufacturing method thereof |
| USRE48526E1 (en) | 2004-01-22 | 2021-04-20 | Nsk Ltd. | Magnetic encoder and bearing |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53145814A (en) * | 1977-05-25 | 1978-12-19 | Tokyo Shibaura Electric Co | Device for reinforcing ceramic parts with resins |
-
1987
- 1987-08-04 JP JP11960787U patent/JPS6425716U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53145814A (en) * | 1977-05-25 | 1978-12-19 | Tokyo Shibaura Electric Co | Device for reinforcing ceramic parts with resins |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0383873U (en) * | 1989-12-14 | 1991-08-26 | ||
| USRE48526E1 (en) | 2004-01-22 | 2021-04-20 | Nsk Ltd. | Magnetic encoder and bearing |
| JP2005214874A (en) * | 2004-01-30 | 2005-08-11 | Nsk Ltd | Encoder, and rolling bearing equipped with encoder |
| JP2020053590A (en) * | 2018-09-27 | 2020-04-02 | 日立金属株式会社 | Yoke-integrated bonded magnet and manufacturing method thereof |