JPH0329750Y2 - - Google Patents
Info
- Publication number
- JPH0329750Y2 JPH0329750Y2 JP1984020541U JP2054184U JPH0329750Y2 JP H0329750 Y2 JPH0329750 Y2 JP H0329750Y2 JP 1984020541 U JP1984020541 U JP 1984020541U JP 2054184 U JP2054184 U JP 2054184U JP H0329750 Y2 JPH0329750 Y2 JP H0329750Y2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- drive shaft
- pointer shaft
- pointer
- recess
- 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
- 239000002184 metal Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 230000005674 electromagnetic induction Effects 0.000 claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Landscapes
- Details Of Measuring Devices (AREA)
- Details Of Measuring And Other Instruments (AREA)
- Instrument Panels (AREA)
- Support Of The Bearing (AREA)
Description
【考案の詳細な説明】
本考案は駆動軸と指針軸とを電磁誘導手段によ
り連結した自動車等に用いられる速度計に係り、
特に駆動軸の先端に凹部を形成し、この凹部内に
指針軸の一端を回動自在に支持し、この支持部に
おいて金属製の指針軸と金属製の駆動軸を電気的
に接続するようにした速度計の指針軸軸受装置に
関するものである。[Detailed description of the invention] The present invention relates to a speedometer used in automobiles etc. in which a drive shaft and a pointer shaft are connected by electromagnetic induction means.
In particular, a recess is formed at the tip of the drive shaft, one end of the pointer shaft is rotatably supported within this recess, and the metal pointer shaft and the metal drive shaft are electrically connected at this support portion. This invention relates to a pointer shaft bearing device for a speedometer.
従来のこの種の装置を第１図に示す。 A conventional device of this type is shown in FIG.
同図において、１は駆動軸であり、フレーム２
のステム部中央に回転自在に固定されている。こ
の駆動軸１は電磁誘導手段によつて指針軸に連結
される。即ち３は磁石、４は透磁率の小さい材料
からなる誘導板であり、たわみ軸（図示せず）の
回転が下端連結部１４を介して駆動軸１および磁
石３に伝達されると、誘導板４に渦電流が発生
し、誘電板４に回転トルクが誘起される。 In the figure, 1 is a drive shaft, and frame 2
It is rotatably fixed in the center of the stem. This drive shaft 1 is connected to a pointer shaft by electromagnetic induction means. That is, 3 is a magnet, and 4 is a guide plate made of a material with low magnetic permeability. An eddy current is generated in the dielectric plate 4, and rotational torque is induced in the dielectric plate 4.
５は指針６の軸であり、上記誘導板４の回転ト
ルクをひげゼンマイ７によつて制御されて回転
し、軸５に固定された指針６に振れにより、文字
盤８上の目盛によつて速度を表示する。 Reference numeral 5 denotes a shaft of a pointer 6, which rotates the guiding plate 4 under the control of a hairspring 7, and causes the pointer 6 fixed to the shaft 5 to oscillate according to the scale on the dial 8. Display speed.
上記装置における指針軸５は駆動軸１の先端に
て回動自在に支持される。即ち、金属製の駆動軸
１の先端には凹部１ａが形成され、凹部１ａの底
部に受板９を固定し、受板９の上に断面樋状の金
属からなる止め金１０を嵌合し、止め金１０の中
心に穿つた孔１０ａに指針軸５の一端を回動自在
に嵌挿したものである。 The pointer shaft 5 in the above device is rotatably supported at the tip of the drive shaft 1. That is, a recess 1a is formed at the tip of the metal drive shaft 1, a receiving plate 9 is fixed to the bottom of the recess 1a, and a metal stopper 10 having a gutter-like cross section is fitted onto the receiving plate 9. , one end of the pointer shaft 5 is rotatably fitted into a hole 10a bored in the center of the stopper 10.
ところで、上記従来装置にあつては、金属製の
指針軸５が電気回路の一部を構成する場合があ
り、止め金１０、受板９、駆動軸１の先端をすべ
て導電性の金属で形成するとともに、金属製の止
め金１０を金属製の駆動軸１に圧入又はカシメに
より固着することにより、その結合を強固に行つ
ていたものであるが、止め金１０を介して指針軸
５から駆動軸１に流れる電流により、止め金１０
と指針軸５の相互接触面に電触作用が生じ、軸受
としての耐久性が劣化し、速度計の機能低下をも
たらすという欠点があつた。 By the way, in the above-mentioned conventional device, the metal pointer shaft 5 may constitute a part of the electric circuit, and the stopper 10, the receiving plate 9, and the tip of the drive shaft 1 are all made of conductive metal. At the same time, the metal stopper 10 is firmly fixed to the metal drive shaft 1 by press-fitting or caulking, so that the connection is firmly established. Due to the current flowing through the drive shaft 1, the stopper 10
This has the disadvantage that an electric contact occurs between the contact surfaces of the pointer shaft 5 and the pointer shaft 5, which deteriorates the durability of the bearing and causes a deterioration in the function of the speedometer.
本考案は上記の点に鑑みてなされたもので、指
針軸の一端を回動自在に支持する支持部に電流が
流れることによつて生じる電触作用を防いで指針
軸の軸受部分の耐久性を増した速度計の指針軸軸
受装置の提供を目的としている。 The present invention was developed in view of the above points, and is designed to prevent the electric contact effect caused by current flowing through the support part that rotatably supports one end of the pointer shaft, thereby increasing the durability of the bearing portion of the pointer shaft. The purpose of this invention is to provide a speedometer pointer shaft bearing device with increased performance.
以下に本考案の実施例を説明する。 Examples of the present invention will be described below.
第２図乃至第４図は本考案の第１乃至第３実施
例の要部を示す断面図で、第２図の第１実施例で
は、駆動軸１の凹部１ａの底部に導電金属からな
る受板９を配し、受板９の上に断面がコの字形状
を呈するリング状の軸受耐１１を載せ、この軸受
体１１の上に更にリング状の止め金１２を載せ
て、この止め金１２を凹部１ａの内壁に圧入また
はカシメることにより軸受体１１を固定している
ものである。前記軸受体１１は電気絶縁性の合成
樹脂からなり、中央の孔１１ａに指針軸５の先端
を挿通し、指針軸５の位置決めを行うとともに、
指針軸５と駆動軸１とを回動自在に連結してい
る。そして、指針軸５はその先端が導電性の受板
９に接触することにより、駆動軸１を介して電気
的にアースされる。従つて軸受体１１によつて支
えられている指針軸５の外周面は電触作用を受け
ることがないから、指針軸５は常に中心位置を正
確に保ちながら支持され、また軸受体１１は金属
製の止め金１２を金属製の駆動軸１内壁に喰い込
ませることで強固に固定される。 2 to 4 are sectional views showing essential parts of the first to third embodiments of the present invention. In the first embodiment shown in FIG. 2, the bottom of the recess 1a of the drive shaft 1 is made of conductive metal. A receiving plate 9 is arranged, a ring-shaped bearing member 11 having a U-shaped cross section is placed on the receiving plate 9, a ring-shaped stopper 12 is further placed on this bearing body 11, and this stopper is placed. The bearing body 11 is fixed by press-fitting or caulking gold 12 into the inner wall of the recess 1a. The bearing body 11 is made of electrically insulating synthetic resin, and the tip of the pointer shaft 5 is inserted into the central hole 11a to position the pointer shaft 5.
The pointer shaft 5 and the drive shaft 1 are rotatably connected. The pointer shaft 5 is electrically grounded via the drive shaft 1 by having its tip contact the conductive receiving plate 9 . Therefore, the outer peripheral surface of the pointer shaft 5 supported by the bearing body 11 is not subjected to electrical contact, so the pointer shaft 5 is always supported while maintaining its center position accurately, and the bearing body 11 is made of metal. It is firmly fixed by biting the stopper 12 made of metal into the inner wall of the metal drive shaft 1.
第３図の第２実施例では、軸受体１１の外径を
凹部１ａの内径より幾分小さく形成し、凹部内壁
と軸受体外周壁との間〓に断面コの字状に形成し
た止め金１２の周壁１２ａを圧入したものであ
る。これにより止め金１２と凹部１ａとの接触面
積が大となり、軸受体１１の固着強度を向上させ
ることができる。 In the second embodiment shown in FIG. 3, the outer diameter of the bearing body 11 is formed to be somewhat smaller than the inner diameter of the recess 1a, and a stopper 12 having a U-shaped cross section is formed between the inner wall of the recess and the outer peripheral wall of the bearing body. The peripheral wall 12a is press-fitted. This increases the contact area between the stopper 12 and the recess 1a, and improves the fixing strength of the bearing body 11.
第４図の第３実施例では、第１実施例の如く凹
部１ａの内壁に嵌着する止め金１２において、そ
の中心孔１２ｂに軸受体１１の外周部に形成した
リング状の溝１１ｂを嵌着し、両者を一体化した
ものである。 In the third embodiment shown in FIG. 4, a ring-shaped groove 11b formed on the outer periphery of the bearing body 11 is fitted into the center hole 12b of the stopper 12 which is fitted to the inner wall of the recess 1a as in the first embodiment. It is a combination of both.
本考案は以上の如くであり、駆動軸の凹部内に
電気絶縁性の合成樹脂からなるリング状の軸受体
を固定し、このリング状の軸受体により指針軸の
一端の外周のみを回動自在に支えるようにしてい
るため、指針軸と駆動軸との電気接続が確保され
指針軸から駆動軸に電流を流すことができと共に
支持軸の回動支持に重要な指針軸の一端の外周と
軸受体との相互接触面が電触作用を受けることが
なくなり、軸受としての耐久性が向上させること
ができる。 The present invention is as described above, and a ring-shaped bearing body made of electrically insulating synthetic resin is fixed in the recess of the drive shaft, and only the outer circumference of one end of the pointer shaft can be rotated by this ring-shaped bearing body. This ensures electrical connection between the pointer shaft and the drive shaft, allowing current to flow from the pointer shaft to the drive shaft, as well as supporting the outer periphery of one end of the pointer shaft and the bearing, which are important for supporting the rotation of the support shaft. The mutual contact surface with the body is no longer subjected to electrical contact, and the durability of the bearing can be improved.
第１図は従来の速度計の断面図、第２図は本考
案第１実施例の要部断面図、第３図は本考案第２
実施例の要部断面図、第４図は本考案第３実施例
の要部断面図である。
１……駆動軸、１ａ……凹部、５……指針軸、
１１……軸受体、１２……止め金。
Fig. 1 is a sectional view of a conventional speedometer, Fig. 2 is a sectional view of main parts of the first embodiment of the present invention, and Fig. 3 is a sectional view of the main part of the first embodiment of the present invention.
FIG. 4 is a cross-sectional view of the main part of the third embodiment of the present invention. 1... Drive shaft, 1a... Recessed portion, 5... Pointer shaft,
11... Bearing body, 12... Clasp.
Claims (1)
るとともに、この駆動軸の先端に凹部を形成し、
この凹部内に指針軸の一端を回動自在に支持し、
この支持部において金属製の指針軸と金属製の駆
動軸を電気的に接続するようにした速度計におい
て、 前記駆動軸の凹部内に電気絶縁性の合成樹脂か
らなるリング状の軸受体を固定し、このリング状
の軸受体により前記指針軸の一端の外周のみを回
動自在に支えたことを特徴とする速度計の指針軸
軸受装置。[Claims for Utility Model Registration] A drive shaft and a pointer shaft are connected by electromagnetic induction means, and a recess is formed at the tip of the drive shaft,
One end of the pointer shaft is rotatably supported within this recess,
In a speedometer in which a metal pointer shaft and a metal drive shaft are electrically connected at this support part, a ring-shaped bearing body made of electrically insulating synthetic resin is fixed in the recess of the drive shaft. A pointer shaft bearing device for a speedometer, characterized in that only the outer periphery of one end of the pointer shaft is rotatably supported by the ring-shaped bearing body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2054184U JPS60134167U (en) | 1984-02-17 | 1984-02-17 | Speedometer pointer shaft bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2054184U JPS60134167U (en) | 1984-02-17 | 1984-02-17 | Speedometer pointer shaft bearing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60134167U JPS60134167U (en) | 1985-09-06 |
| JPH0329750Y2 true JPH0329750Y2 (en) | 1991-06-25 |
Family
ID=30511124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2054184U Granted JPS60134167U (en) | 1984-02-17 | 1984-02-17 | Speedometer pointer shaft bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60134167U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2580725Y2 (en) * | 1993-02-23 | 1998-09-17 | 矢崎総業株式会社 | Indicating instrument |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819264B2 (en) * | 1980-11-17 | 1983-04-16 | 日本水産株式会社 | How to make frozen grilled fish |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6039818Y2 (en) * | 1981-07-31 | 1985-11-29 | 日本精機株式会社 | eddy current instrument |
-
1984
- 1984-02-17 JP JP2054184U patent/JPS60134167U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819264B2 (en) * | 1980-11-17 | 1983-04-16 | 日本水産株式会社 | How to make frozen grilled fish |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60134167U (en) | 1985-09-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2002156245A (en) | Noncontact displacement sensor | |
| US4853575A (en) | Tachometer generator | |
| JPS6248295B2 (en) | ||
| JPH0329750Y2 (en) | ||
| US4970462A (en) | Automotive wheel speed sensor assembly with rotor and stator, one of which has only a few poles | |
| US6084401A (en) | Rotational position sensor employing magneto resistors | |
| US4376915A (en) | Tachometer | |
| JP3653885B2 (en) | Magnetizer for encoder for rotational speed detector | |
| JP3061225B2 (en) | Magneto-electric conversion type rotation angle sensor | |
| US6297629B1 (en) | Device for measuring rotation having magnetic relative positioning of encoder and sensor | |
| EP0284195B1 (en) | Extended spindle electric gauge mechanism | |
| JP2980126B1 (en) | Rotation detection device in eddy current type indicating instrument | |
| RU2010229C1 (en) | Pickup of rotational speed | |
| JPH057579Y2 (en) | ||
| JPS6115555A (en) | Magnet rotary type fan motor | |
| JPH0442760A (en) | Motor | |
| JPH05122878A (en) | Motor apparatus | |
| JPH11295330A (en) | Vehicle speed sensor | |
| JPS6017741Y2 (en) | Vehicle instruments | |
| JP3019187B2 (en) | Cross-coil movement | |
| JP3606056B2 (en) | Instrument | |
| JP3490220B2 (en) | Rotation sensor | |
| JP3413596B2 (en) | Rotation sensor | |
| JPH0156627B2 (en) | ||
| JP3082056B2 (en) | Rotary encoder |