JP2513719Y2 - Linear motion converter - Google Patents
Linear motion converterInfo
- Publication number
- JP2513719Y2 JP2513719Y2 JP1993014591U JP1459193U JP2513719Y2 JP 2513719 Y2 JP2513719 Y2 JP 2513719Y2 JP 1993014591 U JP1993014591 U JP 1993014591U JP 1459193 U JP1459193 U JP 1459193U JP 2513719 Y2 JP2513719 Y2 JP 2513719Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- piston
- pinion
- pistons
- axial direction
- 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 - Lifetime
Links
Landscapes
- Transmission Devices (AREA)
- Fluid-Driven Valves (AREA)
- Actuator (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、圧力流体により直線的
に往復動させられるピストンにより、回動運動を得るよ
うにした直線運動変換装置の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a linear motion converting device for obtaining a rotary motion by a piston which is linearly reciprocated by a pressure fluid.
【０００２】[0002]
【従来の技術】例えば弁体の駆動軸を正逆回転させるた
めに、駆動軸と一体的に設けたピニオンに、流体作動式
シリンダ内に設けた往復ピストンと一体をなすラックを
噛合させたものは、例をあげるまでもなく、数多くの特
許公報及び実用新案公報に記載されており、関係技術者
にとっては、公知もしくは周知に属するところである。2. Description of the Related Art For example, in order to rotate a drive shaft of a valve body forward and reverse, a pinion provided integrally with the drive shaft is engaged with a rack integral with a reciprocating piston provided in a fluid actuated cylinder. Is described in numerous patent publications and utility model publications without mentioning examples, and is well known or well known to the related engineers.
【０００３】[0003]
【考案が解決しようとする課題】上記各装置において
は、ラックは、通常、ピストン本体の径方向の一側部よ
り軸線方向に突設した突杆の求心側に刻設されている。In each of the above devices, the rack is usually formed on the centripetal side of the projecting rod projecting in the axial direction from one side portion of the piston body in the radial direction.
【０００４】前記突杆の径方向の外周面は、ピストンと
ともにシリンダの内面を摺動するが、前記ラックは、ピ
ニオンとの噛合による反作用により、遠心方向に逃げよ
うとする力を受けるため、ピストンの軸線方向の厚さを
十分に大きくしないと、ピストン及び突杆は、ピニオン
との噛合部を支点として傾動しようとして、シリンダの
内面を局部的に強く押圧し、シリンダ内におけるピスト
ンの摺動が不円滑となる。The radial outer peripheral surface of the projecting rod slides on the inner surface of the cylinder together with the piston, but the rack receives a force that tends to escape in the centrifugal direction due to the reaction due to the engagement with the pinion. If the axial thickness of the piston is not made sufficiently large, the piston and the rod try to tilt with the meshing part with the pinion as a fulcrum and locally press strongly the inner surface of the cylinder, causing the piston to slide in the cylinder. It becomes unsmooth.
【０００５】このようなおそれをなくすためには、ピス
トンまたは前記突杆の軸線方向の長さ、すなわちシリン
ダとの摺動部の長さを十分に大きくする必要があるが、
そのようにすると、シリンダを含む装置全体の小型化の
妨げとなる。In order to eliminate such a fear, it is necessary to sufficiently increase the axial length of the piston or the rod, that is, the length of the sliding portion with the cylinder.
This hinders downsizing of the entire device including the cylinder.
【０００６】[0006]
【課題を解決するための手段】本考案によると、両端を
閉塞したシリンダと、このシリンダ内に、その径方向に
向けて設けられ、かつピニオンと一体をなす駆動軸と、
前記シリンダの軸線方向におけるピニオンの外側方に、
軸線方向に摺動しうるようにして設けられた１対のピス
トンと、両ピストンの対向面における径方向の反対側
に、それぞれ内側方へ向かって軸線方向に突設され、径
方向の外周面がシリンダの内面に摺動自在に当接し、か
つ径方向の対向面に、前記ピニオンと噛合するラックが
刻設されている１対の突杆と、各ピストンの中心に、軸
線方向の外側方へ突出するように設けられ、外側端が、
シリンダの端部に摺動自在に支持されている１対の案内
杆とを備え、一方の案内杆に、内側端が両ピストンの対
向面の間に開口するとともに、外側端がシリンダの端部
に設けた圧力流体給排気孔に連通する貫通孔を設け、か
つ各ピストンの外側方において、前記シリンダに、圧力
流体給排気孔を設けたことにより上記課題は解決され
る。According to the present invention, a cylinder whose both ends are closed, and a radial direction inside the cylinder.
A drive shaft that is provided toward and is integral with the pinion,
On the outer side of the pinion in the axial direction of the cylinder,
A pair of pistons provided so as to be slidable in the axial direction
Ton and the opposite side in the radial direction on the facing surface of both pistons
On the inner side of the
Direction outer peripheral surface slidably contacts the inner surface of the cylinder,
A rack that meshes with the pinion is provided on the opposing surfaces in the radial direction.
A pair of engraved rods and the center of each piston
It is provided so as to project outward in the line direction, and the outer edge is
A pair of guides slidably supported on the ends of the cylinder
And one guide rod, the inner end of which is a pair of pistons.
Open between the facing surfaces and the outer end is the end of the cylinder.
A through hole communicating with the pressure fluid supply / exhaust hole provided on the
On the outer side of each piston, pressure is applied to the cylinder.
The above problems are solved by providing the fluid supply / exhaust holes .
【０００７】[0007]
【作用】ピストンの外周面はシリンダの内面により、ま
たピストンの中心は案内杆により案内支持されているの
で、ピストンは、傾くことなく、円滑に軸線方向に摺動
する。The outer peripheral surface of the piston is guided and supported by the inner surface of the cylinder, and the center of the piston is guided and supported by the guide rod. Therefore, the piston smoothly slides in the axial direction without tilting.
【０００８】[0008]
【実施例】図１は、本考案の実施例を示す平面図であ
る。なお図において、下方を前、上方を後とする。左右
両端を端部カバー(１)(２)で閉じたシリンダ(３)の中心
部には、径方向を向く垂直の駆動軸(４)が貫装され、駆
動軸(４)の上端には、中心がシリンダ(３)の軸線上に位
置するピニオン(５)が、一体的に設けられている。1 is a plan view showing an embodiment of the present invention. In the figure, the lower part is the front and the upper part is the rear. At the center of the cylinder (3) whose left and right ends are closed by end covers (1) and (2), a vertical drive shaft (4) facing the radial direction is inserted, and the upper end of the drive shaft (4) is attached. A pinion (5) whose center is located on the axis of the cylinder (3) is integrally provided.
【０００９】ピニオン(５)の左右両側方において、シリ
ンダ(３)内には、ピストン(６)(７)が設けられている。
左方のピストン(６)の後部、並びに右方のピストン(７)
の前部には、それぞれ、ピニオン(５)を超えて軸線方向
に内方へ突出する突杆(８)(９)が、一体的に設けられて
いる。Pistons (6) and (7) are provided in the cylinder (3) on both left and right sides of the pinion (5).
Rear of left piston (6) and right piston (7)
In the front part of each of these, there is integrally provided a projecting rod (8) (9) which projects axially inward beyond the pinion (5).
【００１０】各突杆(８)(９)の対向面には、それぞれ、
ピニオン(５)と適正に嵌合する軸線方向のラック(10)(1
1)が刻設されている。On the facing surfaces of the projecting rods (8) and (9), respectively,
Axial rack (10) (1) that fits properly with the pinion (5)
1) is engraved.
【００１１】左方のピストン(６)の中心には、左方すな
わち外側方へ突出する案内杆(12)の内側端が固着され、
案内杆(12)の外側端部は、左側のカバー(１)の内側面の
中心に設けた内方を向く受筒(13)内に、摺動可能に支持
されている。At the center of the left piston (6), the inner end of a guide rod (12) protruding leftward, that is, outward, is fixed.
The outer end of the guide rod (12) is slidably supported in an inwardly facing receiving tube (13) provided at the center of the inner surface of the left cover (1).
【００１２】右方のピストン(７)の中心には、軸線方向
の貫通孔(14)を有し、かつ右方へ突出する案内杆(15)の
内側端が固着され、案内杆(15)の外側端は、右側カバー
(２)の内側面の中心に設けた内方を向く受筒(16)内に、
摺動自在に支持されている。At the center of the right piston (7), there is an axial through hole (14), and the inner end of a guide rod (15) projecting to the right is fixed and the guide rod (15) is fixed. The outer edge of the right cover
Inside the receiving tube (16) facing inward provided at the center of the inner surface of (2),
It is slidably supported.
【００１３】左右のカバー(１)(２)及びシリンダ(３)に
は、左右の各カバー(１)(２)とそのおのおのに近い側の
ピストン(６)(７)との間における２つの空間を連絡する
ための給排気孔(17)があけられている。右側カバー(２)
には、受筒(16)の内部及び案内杆(15)の貫通孔(14)を介
して、左右のピストン(６)(７)の対向面間における空間
内に圧縮空気を給排気するための給排気孔(18)があけら
れている。The left and right covers (1) and (2) and the cylinder (3) are provided with two covers between the left and right covers (1) and (2) and the pistons (6) and (7) on the side close to each of them. Air supply / exhaust holes (17) are provided to connect the spaces. Right side cover (2)
For supplying and exhausting compressed air into the space between the facing surfaces of the left and right pistons (6) and (7) through the inside of the receiving cylinder (16) and the through hole (14) of the guide rod (15). The air supply / exhaust holes (18) are opened.
【００１４】給排気孔(17)(18)のいずれか一方より圧縮
空気を送入し、かつ他方より排出させることにより、両
ピストン(６)(７)は同時に内外へ摺動し、その各突杆
(８)(９)におけるラック(10)(11)を介して、ピニオン
(５)および駆動軸(４)は正逆回動させられる。By supplying compressed air from one of the air supply / exhaust holes (17) and (18) and discharging it from the other, both pistons (6) and (7) simultaneously slide in and out, and their respective Plunge
(8) Through the racks (10) and (11) in (9), pinion
(5) and the drive shaft (4) are rotated in the forward and reverse directions.
【００１５】各ピストン(６)(７)と一体をなす突杆(８)
(９)の求心側に設けたラック(10)(11)がピニオン(５)と
噛合しているため、ピストン(６)(７)の摺動時、ピスト
ン(６)(７)には、前記噛合点を中心とする傾動力が作用
するが、ピストン(６)(７)は、シリンダ(３)の内面ばか
りでなく、それぞれの中心が、案内杆(12)(15)によって
も案内されているので、ピストン(６)(７)の傾動は防止
される。そのため、従来の同型式のものに比して、突杆
(８)(９)の長さをかなり小としても、円滑かつ軽快に作
動することができる。A projecting rod (8) integral with each piston (6) (7)
Since the racks (10) and (11) provided on the centripetal side of (9) mesh with the pinion (5), when the pistons (6) and (7) slide, the pistons (6) and (7) Although the tilting force about the meshing point acts, the pistons (6) and (7) are guided not only by the inner surface of the cylinder (3) but also by the guide rods (12), (15). Therefore, the tilting of the pistons (6) and (7) is prevented. Therefore, compared to the conventional model of the same type,
(8) Even if the length of (9) is considerably small, it can operate smoothly and lightly.
【００１６】[0016]
【考案の効果】ピストンは、シリンダの内面と軸線方向
を向く案内杆とにより、外周と中心部との２個所におい
て、軸線方向に案内されているため、ピストンと一体を
なすラックのピニオンに対する噛合部を中心とする傾動
は効果的に防止されて、ピストンに無理な力が作用する
ことはなく、ピストンは円滑に作動する。The piston is axially guided by the inner surface of the cylinder and the guide rod facing the axial direction at the outer periphery and the central portion, so that the pinion of the rack integral with the piston meshes with the piston. The tilting about the part is effectively prevented, and the piston is operated smoothly without applying excessive force to the piston.
【図１】本考案の実施例を示す横断平面図である。FIG. 1 is a cross-sectional plan view showing an embodiment of the present invention.
(１)(２)端部カバー (３)シリンダ (４)駆動軸 (５)ピニオン (６)(７)ピストン (８)(９)突杆 (10)(11)ラック (12)案内杆 (13)受筒 (14)貫通孔 (15)案内杆 (16)受筒 (17)(18)給排気孔 (1) (2) End cover (3) Cylinder (4) Drive shaft (5) Pinion (6) (7) Piston (8) (9) Push rod (10) (11) Rack (12) Guide rod ( 13) Receptacle (14) Through hole (15) Guide rod (16) Receptacle (17) (18) Air supply / exhaust hole
Claims (1)
ピニオンと一体をなす駆動軸と、 前記シリンダの軸線方向におけるピニオンの外側方に、
軸線方向に摺動しうるようにして設けられた１対のピス
トンと、 両ピストンの対向面における径方向の反対側に、それぞ
れ内側方へ向かって軸線方向に突設され、径方向の外周
面がシリンダの内面に摺動自在に当接し、かつ径方向の
対向面に、前記ピニオンと噛合するラックが刻設されて
いる１対の突杆と、 各ピストンの中心に、軸線方向の外側方へ突出するよう
に設けられ、外側端が、シリンダの端部に摺動自在に支
持されている１対の案内杆とを備え、 一方の案内杆に、内側端が両ピストンの対向面の間に開
口するとともに、外側端がシリンダの端部に設けた圧力
流体給排気孔に連通する貫通孔を設け、 かつ各ピストンの外側方において、前記シリンダに、圧
力流体給排気孔を設けた ことを特徴とする直線運動変換
装置。1. A cylinder having both ends closed, and a cylinder provided in the cylinder in a radial direction thereof, and
A drive shaft that is integral with the pinion and an outer side of the pinion in the axial direction of the cylinder,
A pair of pistons provided so as to be slidable in the axial direction
Ton and the opposite side in the radial direction on the facing surfaces of both pistons.
Is projected inward in the axial direction and has a radial outer circumference.
Surface slidably contacts the inner surface of the cylinder, and
On the opposite surface, a rack that meshes with the pinion is engraved
A pair of protruding rods and the center of each piston so that they project outward in the axial direction.
The outer end is slidably supported on the end of the cylinder.
It is equipped with a pair of guide rods that are held, and one guide rod has an inner end opened between the facing surfaces of both pistons.
The pressure applied to the outside of the cylinder
A through hole communicating with the fluid supply / exhaust hole is provided, and pressure is applied to the cylinder on the outer side of each piston.
A linear motion conversion device having a force fluid supply / exhaust hole .
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993014591U JP2513719Y2 (en) | 1993-03-05 | 1993-03-05 | Linear motion converter |
| CN 94102672 CN1034757C (en) | 1993-03-05 | 1994-03-03 | Straight motion conversion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993014591U JP2513719Y2 (en) | 1993-03-05 | 1993-03-05 | Linear motion converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0669499U JPH0669499U (en) | 1994-09-30 |
| JP2513719Y2 true JP2513719Y2 (en) | 1996-10-09 |
Family
ID=11865422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993014591U Expired - Lifetime JP2513719Y2 (en) | 1993-03-05 | 1993-03-05 | Linear motion converter |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2513719Y2 (en) |
| CN (1) | CN1034757C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006218580A (en) * | 2005-02-10 | 2006-08-24 | Smc Corp | Chuck for work holding and its control method |
| CN100451389C (en) * | 2007-04-09 | 2009-01-14 | 王志 | Device for transform fluid-pressure into mechanical rotating motion |
| WO2010068965A1 (en) * | 2008-12-16 | 2010-06-24 | Allan Graeme Miners | Linear actuator with internal linear to rotary conversion and external rotary component |
| CN104295695B (en) * | 2014-09-30 | 2016-08-17 | 刘效辉 | Power switching device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6212082U (en) * | 1985-07-08 | 1987-01-24 | ||
| NL8800340A (en) * | 1988-02-11 | 1989-09-01 | Jft Technology B V | DRIVE DEVICE. |
| JPH0216805U (en) * | 1988-07-20 | 1990-02-02 | ||
| JPH03168402A (en) * | 1989-11-22 | 1991-07-22 | Messina Aurerio | Actuator for valve drive |
-
1993
- 1993-03-05 JP JP1993014591U patent/JP2513719Y2/en not_active Expired - Lifetime
-
1994
- 1994-03-03 CN CN 94102672 patent/CN1034757C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1034757C (en) | 1997-04-30 |
| CN1100502A (en) | 1995-03-22 |
| JPH0669499U (en) | 1994-09-30 |
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