JPS6349725Y2 - - Google Patents
Info
- Publication number
- JPS6349725Y2 JPS6349725Y2 JP1982159442U JP15944282U JPS6349725Y2 JP S6349725 Y2 JPS6349725 Y2 JP S6349725Y2 JP 1982159442 U JP1982159442 U JP 1982159442U JP 15944282 U JP15944282 U JP 15944282U JP S6349725 Y2 JPS6349725 Y2 JP S6349725Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- crank gear
- crank
- magnetic
- rotation speed
- 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
- 238000001514 detection method Methods 0.000 claims description 18
- 239000000696 magnetic material Substances 0.000 claims description 5
- 235000014676 Phragmites communis Nutrition 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003796 beauty Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
【考案の詳細な説明】
(イ) 産業上の利用分野
本案は自転車や美容車等のクランクギヤに装備
されて該クランクギヤの回転数を検出するクラン
ク回転数検出装置に関する。[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a crank rotation speed detection device that is installed on a crank gear of a bicycle, a beauty car, etc., and detects the rotation speed of the crank gear.
(ロ) 従来技術
此種クランクギヤ回転数検出装置として、クラ
ンクギヤ自身に複数個の磁石を取り付け、これら
磁石の通過面に対峙してリードスイツチ等の磁気
検出素子を配設し、該クランクギヤの回転に伴な
つて通過する磁石により該磁気検出素子から回転
数出力を取り出すようにしたものが知られてい
る。しかし乍らこのような従来例によれば、高価
な磁石が複数個必要であり使用部品点数を多数に
すると共に、これら磁石の磁極方向も一致させな
ければならないので組立作業性が悪く、製造コス
トをアツプしていた。(B) Prior art As this type of crank gear rotation speed detection device, a plurality of magnets are attached to the crank gear itself, and a magnetic detection element such as a reed switch is disposed facing the passing surface of these magnets. It is known that a rotational speed output is extracted from the magnetic detection element by a magnet that passes through the magnetic detection element as it rotates. However, according to such a conventional example, multiple expensive magnets are required, which increases the number of parts used, and the magnetic pole directions of these magnets must also be matched, resulting in poor assembly workability and high manufacturing costs. was uploaded.
(ハ) 考案の目的
本案は複数個の孔を有する鉄製等の磁性体製の
クランクギヤを直接利用して磁石から磁気検出素
子に印加する磁力線を通過・遮断することによ
り、簡単な構成で、しかも高価な磁石を１個使用
するだけでクランク回転数の検出を行なうように
したもので、組立作業性の良好な、製造コストの
低減化に寄与するクランク回転数検出装置を得る
ようにしたものである。(c) Purpose of the invention This invention has a simple structure by directly using a crank gear made of magnetic material such as iron and having multiple holes to pass and block the lines of magnetic force applied from the magnet to the magnetic detection element. Furthermore, the crank rotation speed can be detected by using only one expensive magnet, thereby providing a crank rotation speed detection device that is easy to assemble and contributes to reducing manufacturing costs. It is.
(ニ) 考案の構成
本案のクランク回転数検出装置は磁性体よりな
り複数個の孔を軸支軸から等距離に有したクラン
クギヤと、該クランクギヤの前記孔の通過面に対
峙して配設された磁石と、該クランクギヤを挟ん
で前記磁石に対向して配設され、該磁石との間に
前記孔が位置したときに作動して回転数パルスを
得る磁気検出素子と、を有してなることを特徴と
する。(d) Structure of the invention The crank rotation speed detecting device of the invention comprises a crank gear made of a magnetic material and having a plurality of holes equidistant from a shaft supporting shaft, and a crank gear disposed facing the passage surface of the holes of the crank gear. and a magnetic detection element that is disposed opposite to the magnet with the crank gear in between and is activated to obtain a rotational speed pulse when the hole is located between the magnet and the magnet. It is characterized by:
(ホ) 作用
従つてペダルの足踏駆動によりクランクギヤは
回転し、磁石から発生した磁力線は該磁石と磁気
検出素子との間にクランクギヤの孔が位置したと
きに該磁気検出素子に到達して該検出素子を作動
させると共に該磁石と該検出素子との間に該孔が
位置しないときには該クランクギヤで遮断されて
該検出素子に到達せず、該検出素子を非作動状態
にするもので、このようにしてクランクギヤの回
転にともない前記検出素子は接断を繰り返し、回
転数出力を取り出すものである。(E) Effect Therefore, the crank gear rotates due to the foot drive of the pedal, and the magnetic lines of force generated from the magnet reach the magnetic detecting element when the hole in the crank gear is located between the magnet and the magnetic detecting element. At the same time, when the hole is not located between the magnet and the detection element, the magnet is blocked by the crank gear and does not reach the detection element, and the detection element is rendered inactive. In this way, as the crank gear rotates, the detection element repeatedly connects and disconnects, and extracts a rotational speed output.
(ヘ) 実施例
１は自転車の車体フレーム、２はこのフレーム
１に回転自在に軸支された軸支軸で、該軸支軸２
の一方には自転車タイヤをチエーン３駆動して回
転させるためのクランクギヤ４を軸着している。(F) Embodiment 1 is a bicycle body frame, 2 is a shaft rotatably supported on the frame 1, and the shaft 2 is rotatably supported on the frame 1.
A crank gear 4 for rotating a bicycle tire by driving a chain 3 is attached to one of the shafts.
そして前記クランクギヤ４は鉄板等の磁性体か
らなつており、軸支軸２の中心から、即ち回転の
中心から等距離で且つ所定角度毎に複数個の孔５
…を開設してある。 The crank gear 4 is made of a magnetic material such as an iron plate, and has a plurality of holes 5 arranged at predetermined angles at equal distances from the center of the shaft 2, that is, from the center of rotation.
... has been established.
６は前記フレーム１に取り付けた中空箱体、７
はこの箱体６に基片８を螺子９止め固定した型
部材で、この型部材７の遊片１０は前記クラン
クギヤ４の孔５…の通過面に対峙している。 6 is a hollow box attached to the frame 1, 7
is a mold member in which a base piece 8 is fixed to the box body 6 by screws 9, and loose pieces 10 of this mold member 7 face the passage surfaces of the holes 5 of the crank gear 4.
１１はこの遊片１０の取付凹所１０ａに取り付
けた磁石、１２は前記箱体６の前記クランクギヤ
４を挟んで該磁石１１に対向する位置に穿設した
窓、１３はこの窓１２の内側の前記箱体６に取り
付けた磁気検出素子であるリードスイツチで、該
リードスイツチ１３は前記クランクギヤ４の孔５
…通過面を挟んで前記磁石１１と対向している。 11 is a magnet attached to the mounting recess 10a of the loose piece 10; 12 is a window bored in the box body 6 at a position facing the magnet 11 across the crank gear 4; and 13 is the inside of the window 12. The reed switch 13 is a magnetic detection element attached to the box body 6, and the reed switch 13 is connected to the hole 5 of the crank gear 4.
...It faces the magnet 11 across the passage surface.
而してペダルの足踏駆動によりクランクギヤ４
は回転し、前記磁石１１から発生した磁力線は該
クランクギヤ４の複数個の孔５…が前記リードス
イツチ１３を通過したときのみ該リードスイツチ
１３に到達してそのたびにリードスイツチ１３を
オンするもので、このようにして回転数出力を取
り出すようになつている。 Then, crank gear 4 is shifted by foot drive of the pedal.
rotates, and the magnetic lines of force generated from the magnet 11 reach the reed switch 13 only when the plurality of holes 5 of the crank gear 4 pass through the reed switch 13, turning on the reed switch 13 each time. This is how the rotational speed output is extracted.
(ト) 考案の効果
従つて本案に依れば、複数個の孔を有した磁性
体製のクランクギヤを直接利用して磁石から磁気
検出素子であるリードスイツチに印加する磁力線
を通過・遮断することにより、構成を簡単にする
と共に従来複数個必要であつた磁石を１個ですま
すことができて使用部品を減少し、従来に比較し
て組立作業性を大幅に良好にしてコストダウンに
大きく寄与できるクランク回転数検出装置を得る
ことができる。(G) Effect of the invention Therefore, according to the present invention, the magnetic force lines applied from the magnet to the reed switch, which is a magnetic detection element, are passed through and blocked by directly utilizing a crank gear made of a magnetic material having a plurality of holes. This simplifies the configuration, reduces the number of parts used by requiring only one magnet instead of multiple, and significantly improves assembly workability compared to conventional methods, leading to significant cost reductions. It is possible to obtain a crank rotation speed detection device that can contribute to the above.
図面は何れも本案クランク回転数検出装置の実
施例に関し、第１図は全体図、第２図は要部の一
部切欠正面図である。
５……孔、４……クランクギヤ、１１……磁
石、１３……リードスイツチ。
The drawings all relate to an embodiment of the crank rotation speed detection device of the present invention, with Fig. 1 being an overall view and Fig. 2 being a partially cutaway front view of the essential parts. 5: hole, 4: crank gear, 11: magnet, 13: reed switch.
Claims (1)
よりなるクランクギヤと、該クランクギヤの前記
孔の通過面に対峙して配設された磁石と、該クラ
ンクギヤを挟んで前記磁石に対向して配設され、
該磁石との間に前記孔が位置したときに作動して
回転数パルスを得る磁気検出素子と、を有してな
るクランク回転数検出装置。 a crank gear made of a magnetic material having a plurality of holes equidistant from a supporting shaft; a magnet disposed facing a passage surface of the holes of the crank gear; and a magnet with the crank gear in between. is placed opposite the
A crank rotation speed detection device comprising: a magnetic detection element that is activated to obtain a rotation speed pulse when the hole is located between the magnet and the magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15944282U JPS5964574U (en) | 1982-10-20 | 1982-10-20 | Crank rotation speed detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15944282U JPS5964574U (en) | 1982-10-20 | 1982-10-20 | Crank rotation speed detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5964574U JPS5964574U (en) | 1984-04-28 |
| JPS6349725Y2 true JPS6349725Y2 (en) | 1988-12-21 |
Family
ID=30350979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15944282U Granted JPS5964574U (en) | 1982-10-20 | 1982-10-20 | Crank rotation speed detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5964574U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201600131281A1 (en) * | 2016-12-27 | 2018-06-27 | Campagnolo Srl | Bicycle detector |
| IT201600131314A1 (en) * | 2016-12-27 | 2018-06-27 | Campagnolo Srl | Wireless electronic bicycle derailleur |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56155366U (en) * | 1980-04-19 | 1981-11-19 | ||
| JPS6035899Y2 (en) * | 1980-10-28 | 1985-10-24 | 日本精機株式会社 | speed detection device |
-
1982
- 1982-10-20 JP JP15944282U patent/JPS5964574U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5964574U (en) | 1984-04-28 |
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