JPH0242241U - - Google Patents
Info
- Publication number
- JPH0242241U JPH0242241U JP12113188U JP12113188U JPH0242241U JP H0242241 U JPH0242241 U JP H0242241U JP 12113188 U JP12113188 U JP 12113188U JP 12113188 U JP12113188 U JP 12113188U JP H0242241 U JPH0242241 U JP H0242241U
- Authority
- JP
- Japan
- Prior art keywords
- rack
- pinion
- cam surface
- backward
- neutral point
- 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
- 230000007935 neutral effect Effects 0.000 claims 3
Description
第１図ないし第３図は、この考案のラツク・ピ
ニオン機構の一実施例をそれぞれ異なる動作位置
にて示す側面図、第４図は、従来のデイスク再生
装置の一例を示す斜視図、第５図は、第４図に示
したラツク・ピニオン機構の側面図である。
６……駆動歯車、７……従動歯車、１１……ラ
ツク・ピニオン機構、１２……ピニオン、１３…
…カム、１３ａ……放物線状カム面、１３ｂ……
円弧状カム面、１４……ラツク、１４ａ，１４ｂ
……溝部、１５……ロツクレバー、１６……ばね
。
1 to 3 are side views showing one embodiment of the rack and pinion mechanism of this invention at different operating positions, FIG. 4 is a perspective view showing an example of a conventional disc playback device, and FIG. 4 is a side view of the rack and pinion mechanism shown in FIG. 4. 6... Drive gear, 7... Driven gear, 11... Rack and pinion mechanism, 12... Pinion, 13...
...Cam, 13a... Parabolic cam surface, 13b...
Arc-shaped cam surface, 14...Rack, 14a, 14b
...Groove, 15...Lock lever, 16...Spring.
Claims (1)
駆動されるピニオンと、このピニオンに噛合しそ
の正逆転により進退駆動されるラツクと、前記ピ
ニオンに同軸結合され、軸芯からの距離が中立点
を中心に漸増する放物線状カム面と軸芯からの距
離が一定の円弧状カム面が連続するカム面を有す
るカムと、このカムのこのカム面に常時当接する
方向に付勢された状態で揺動自在に設けられ、前
記中立点に当接するときに前記ラツクに係合して
これを前進限界位置又は後退限界位置に変位不能
にロツクするとともに、当接位置が中立点から外
れるにつれて前記ラツクから離脱し、ラツクがピ
ニオンの有歯部分に噛合する前に前記ロツクを解
除するロツクレバーとを具備してなるラツク・ピ
ニオン機構。 A pinion that has some teeth missing and is driven forward and backward by motor power, a rack that meshes with this pinion and is driven forward and backward by the forward and reverse rotation, and a rack that is coaxially connected to the pinion and whose distance from the axis is the neutral point. A cam that has a cam surface in which a parabolic cam surface gradually increases around , and an arc-shaped cam surface with a constant distance from the shaft center are continuous, and this cam is biased in a direction in which it is constantly in contact with this cam surface. It is provided so as to be swingable, and when it comes into contact with the neutral point, it engages with the rack and locks it in the forward limit position or the backward limit position without being able to displace it, and as the abutting position deviates from the neutral point, the rack engages with the rack. a lock lever for disengaging from the lock and releasing the lock before the rack engages the toothed portion of the pinion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12113188U JPH0242241U (en) | 1988-09-14 | 1988-09-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12113188U JPH0242241U (en) | 1988-09-14 | 1988-09-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0242241U true JPH0242241U (en) | 1990-03-23 |
Family
ID=31367863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12113188U Pending JPH0242241U (en) | 1988-09-14 | 1988-09-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0242241U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013235629A (en) * | 2012-05-07 | 2013-11-21 | Fujitsu Ltd | Library apparatus |
| JP2015093670A (en) * | 2013-11-08 | 2015-05-18 | エンブラエル ソシエダージ アノーニマ | Force-balancing mechanism especially useful for assisted lifting/lowering of aircraft stair |
-
1988
- 1988-09-14 JP JP12113188U patent/JPH0242241U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013235629A (en) * | 2012-05-07 | 2013-11-21 | Fujitsu Ltd | Library apparatus |
| JP2015093670A (en) * | 2013-11-08 | 2015-05-18 | エンブラエル ソシエダージ アノーニマ | Force-balancing mechanism especially useful for assisted lifting/lowering of aircraft stair |