KR101862295B1 - Rotary cylinder - Google Patents

Rotary cylinder Download PDF

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Publication number
KR101862295B1
KR101862295B1 KR1020160022084A KR20160022084A KR101862295B1 KR 101862295 B1 KR101862295 B1 KR 101862295B1 KR 1020160022084 A KR1020160022084 A KR 1020160022084A KR 20160022084 A KR20160022084 A KR 20160022084A KR 101862295 B1 KR101862295 B1 KR 101862295B1
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KR
South Korea
Prior art keywords
stopper
bracket
stopper bracket
rotary
contact
Prior art date
Application number
KR1020160022084A
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Korean (ko)
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KR20170100102A (en
Inventor
정의충
Original Assignee
정의충
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Priority to KR1020160022084A priority Critical patent/KR101862295B1/en
Publication of KR20170100102A publication Critical patent/KR20170100102A/en
Application granted granted Critical
Publication of KR101862295B1 publication Critical patent/KR101862295B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F15B15/065—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement the motor being of the rack-and-pinion type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/24—Other details, e.g. assembly with regulating devices for restricting the stroke

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary cylinder used by converting a linear motion by fluid pressure into a rotary motion. The rotary cylinder includes: a body portion having a plurality of piston chambers formed therein; A piston portion having first and second pistons each of which is inserted into a plurality of piston chambers and on which a rack is formed so as to linearly move by fluid pressure; A rotating machine unit installed between the plurality of piston chambers and rotating by a rack; First and second stoppers spaced apart from the periphery of the rotator fisher unit so as to rotate within a predetermined angle range; A stopper bracket protruding in a radial direction around a rotation axis of the rotary shaft and extending in the circumferential direction to stop the rotary shaft by contact with the first and second stoppers; . Accordingly, it is possible to rotate the rotary fisher unit only within a certain angle range, to adjust the rotation angle of the rotary fisher unit according to the circumferential length of the stopper bracket, and to distribute the load generated upon contact with the stopper.

Description

Rotary cylinder {ROTARY CYLINDER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary cylinder, and more particularly, to a rotary cylinder used for converting linear motion due to fluid pressure into rotary motion.

The rotary cylinder is divided into a vane type and a rack-pinion type according to the driving method.

In the rack-and-pinion type, a piston in a cylinder in which a rack is formed on a surface is linearly moved by a fluid pressure, and a pinion is formed to rotate in engagement with a rack of a linearly moving piston. In some cases, it is necessary to design the rotating member to rotate within a certain angle range.

For example, Korean Patent Registration No. 10-0716240 discloses a rotary cylinder that sets the rotation angle of a rotating pinion by changing the supply path of air supplied to both ends of two cylinders to control the position of the piston .

Korean Patent Registration No. 10-0905406 discloses a rotary cylinder capable of improving the airtightness of the air port providing air pressure to the cylinder to minimize the occurrence of impact and controlling the minute speed and position.

Korean Patent Registration No. 10-0230967 discloses an internal combustion engine comprising an outer rotating body having a piercing hole pierced in a central portion thereof and a claw protruding inside the rotating shaft and an inner rotating body inserted into the rotating hole and having a driving block on one side, And a disk-shaped rotating cylinder capable of adjusting the rotating direction by the hydraulic pressure between the blocks.

As described above, in the conventional rotary cylinder, in order to adjust the rotation angle of the rotary member, the supply route of the air is changed to set the rotation angle of the rotary member according to the position of the piston, The control method is difficult and the rotation is restricted by the contact between the pendant and the driving block, so that a large load is applied to the pendant and the driving block, resulting in low durability.

On the other hand, in order to change the range of the rotation angle at which the rotary member is rotated, there is a problem that the supply amount of air must be recalculated and controlled, or the entire inner rotor must be replaced with the outer rotary member or the driving block formed with the interlock.

It is an object of the present invention to provide a rotary cylinder capable of simply controlling the rotation angle at which the rotary member rotates.

Another object of the present invention is to provide a rotary cylinder having a simple and easy to change rotation angle of a rotary member and high durability.

According to an aspect of the present invention, there is provided a rotary cylinder comprising: a body portion having a plurality of piston chambers formed therein; A piston portion having first and second pistons each of which is inserted into the plurality of piston chambers and on which a rack is formed so as to linearly move by fluid pressure; A rotating machine part installed between the plurality of piston chambers and rotating by the rack; First and second stoppers spaced apart from the circumference of the rotator to rotate the rotator fisher within a predetermined angular range; A stopper bracket protruding in a radial direction around a rotational axis of the rotary member and extending in the circumferential direction to stop the rotary member by contact with the first and second stoppers; .

Preferably, the apparatus further includes a bracket supporting portion provided on the upper portion of the rotator and detachably attached to the stopper bracket.

Preferably, a concavo-convex structure is formed on a surface where the outer peripheral surface of the bracket supporting portion and the inner peripheral surface of the stopper bracket are in contact with each other.

Preferably, the stopper bracket includes a first stopper bracket and a second stopper bracket extending in the circumferential direction from the first stopper bracket and engaged with the first stopper bracket in a state of being in contact with the first stopper bracket.

Preferably, the stopper supporting part is attached to a side surface of the body part and has a stopper insertion hole formed at a height at which the stopper bracket is provided. And the stopper adjusts a position of contact with the stopper bracket according to a length inserted into the stopper insertion port.

Preferably, the stopper bracket has a protective member detachably attached to a surface that contacts the stopper.

The rotary cylinder of the present invention includes the stopper and the stopper bracket, so that the rotary machine can rotate only within a certain angular range.

In addition, according to the present invention, since the stopper bracket extending in the circumferential direction is provided, the rotation angle of the rotary member can be adjusted according to the circumferential length of the stopper bracket, and the load generated upon contact with the stopper can be dispersed.

Further, according to the present invention, the concave and convex structure is formed on the surface where the outer circumferential surface of the bracket supporting portion and the inner circumferential surface of the stopper bracket are in contact with each other, so that the coupling force between the bracket supporting portion and the stopper bracket can be increased.

Further, according to the present invention, by providing the first and second stopper brackets, it is possible to simply change the rotation angle of the rotary machine part.

In addition, according to the present invention, since the protective member detachably attached to the stopper bracket is provided, the durability of the stopper bracket can be improved by replacing only the protective member damaged by contact with the stopper.

1 is a perspective view according to a first embodiment of the present invention;
2 is an exploded perspective view according to the first embodiment of the present invention.
3 is a plan view according to the first embodiment of the present invention.
4 is a partial plan view of a second embodiment of the present invention;
5 is a perspective view showing a first stopper bracket according to a second embodiment of the present invention;

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The rotary cylinder of the present invention can be classified into the first and second embodiments, and the constituent elements of the respective embodiments are basically the same, but there are differences in some configurations. In addition, among the various embodiments of the present invention, the same reference numerals in the drawings are used for the same functional elements and functions.

1 to 3, the rotary cylinder according to the first embodiment of the present invention includes a body 100, a piston 200, a rotator 300, a stopper 400, a bracket support 600, a stopper bracket 500, and a stopper support unit 700.

The body 100 has first and second piston chambers 110 and 120 and a gear insertion hole 130 formed therein and includes first and second covers 140 and 150.

The first and second piston chambers 110 and 120 are formed in parallel with each other through the inside of the body 100 so that the piston 200 is inserted. The fluid is supplied or discharged to both ends of the first and second piston chambers 110 and the position of the piston 200 inserted therein can be adjusted.

The gear insertion port 130 is formed to penetrate the inside of the body 100 between the first and second piston chambers 110 and 120 to receive the rotary body 300. The first and second piston chambers 110, 120 in the vertical direction.

The first and second covers 140 and 150 are provided on the side of the body portion 100 in the direction in which the first and second piston chambers 110 and 120 are opened and the first and second piston chambers 110 and 120, Respectively.

Although not shown in the drawing, the first and second piston chambers may be formed in any directions as long as they are adjacent to the gear insertion port, and may form two or more piston chambers.

In addition, a fluid passage connecting the piston chamber and the outside of the body may be formed in the first and second covers to supply and discharge the fluid to the first and second piston chambers.

The piston unit 200 includes first and second pistons 210 and 220 inserted into the first and second piston chambers 110 and 120, respectively.

The first and second pistons 210 and 220 are inserted into the first and second piston chambers 110 and 120 and are connected to each other by fluid pressure supplied to both ends of the first and second piston chambers 110 and 120, Move in the opposite direction. At this time, the outer circumferences of the first and second pistons 210 and 220 and the inner circumference of the first and second piston chambers 110 and 120, respectively, It is preferable to provide a hermetic member which is in close contact.

The first and second pistons 210 and 220 are connected to first and second racks 211 and 221 on the side of the gear insertion port 300, that is, on the surfaces facing the first and second pistons 210 and 220, respectively. And the first and second racks 211 and 221 are engaged with the corresponding gears 310 to rotate the rotary shaft 300. [

The rotary unit 300 is rotated by the first and second racks 211 and 221 inserted in the gear insertion port 130 between the first and second piston chambers 110 and 120 and linearly moving.

The rotation unit 300 may include a body insertion unit 320, a gear 310, and a bracket coupling unit 330.

The body insertion portion 320 is inserted into the gear insertion port 130.

The gear 310 is preferably provided on the outer circumferential surface of the body insertion part 320 and is formed so as to correspond to the first and second racks 211 and 221.

The bracket coupling part 330 is provided on the body insertion part 320 and is coupled to the bracket supporting part 600.

Thus, the linear motion of the piston unit 200 is converted into the rotational motion of the rotary body unit 300.

At this time, the bearing cover 340 may be provided to reduce the friction between the rotating body 300 and the rotating body 300 rotated from the body 100. The bearing cover 340 is provided on the upper portion of the body 100 around the gear insertion port 130.

The stopper 400 is spaced around the rotary shaft 300 to rotate the rotary shaft 300 within a predetermined angle range and includes first and second stoppers 410 and 420.

The first and second stoppers 410 and 420 are brought into contact with the stopper bracket 500 that rotates in accordance with the rotation of the rotary shaft 300 to restrict the rotary motion of the rotary shaft 300. This makes it possible to maintain the rotation angle of the rotating machine section 300. Here, the rotation angle is the range of the rotatable angular range of the rotator unit 300 whose rotation is restricted by the first and second stoppers 410 and 420.

The bracket supporting part 600 is provided on the upper part of the rotating part 300 so that the stopper bracket 500 is detachably attached.

The bracket support part 600 may include a gear engagement part 610, a stopper bracket coupling part 620, and a groove part 630.

The gear coupling portion 610 is coupled to the upper portion of the bracket coupling portion 330 of the rotary shaft 300.

The stopper bracket coupling portion 620 is coupled to the stopper bracket 500 and is formed on the upper portion of the gear coupling portion 610 and is formed to be larger than the diameter of the gear coupling portion 610.

The groove portion 630 is a groove formed in the outer circumferential surface of the stopper bracket coupling portion 620. When the bracket support portion 600 and the stopper bracket 500 are engaged, the projection portion 502 formed in the stopper bracket 500 is inserted, .

Although not shown in the drawing, a protrusion may be formed on the outer circumferential surface of the bracket support portion, and a groove may be formed on the inner circumferential surface of the stopper bracket 500 to increase the coupling force. That is, the concavo-convex structure can be formed on the surface where the outer peripheral surface of the bracket supporting portion 600 and the inner peripheral surface of the stopper bracket 500 are in contact with each other.

On the other hand, the upper part of the bracket supporting part can be machined by combining mechanical devices that require various rotational movements.

The stopper bracket 500 protrudes in the radial direction around the rotation axis of the rotary shaft 300 and contacts the first and second stoppers 410 and 420 to rotate the rotary shaft 300 in the circumferential direction As shown in FIG.

The stopper bracket 500 may include a coupling member 501, a protrusion 502, and a protection member 503.

The engaging member 501 protrudes from the inner circumferential surface of the stopper bracket 500 so as to extend in the circumferential direction about the rotational axis of the rotary member 300 and the upper surface thereof is engaged with the lower surface of the stopper bracket engaging portion 620, It can be fixed with a bolt.

The protruding portion 502 is protrudingly formed on the inner circumferential surface of the stopper bracket 500 so as to form a jaw in the radial direction about the rotation axis of the rotary member 300. The projection part 502 is inserted into the groove part 630 to increase the coupling force between the stopper bracket 500 and the bracket supporting part 600.

The protective member 503 is detachably attached to a surface of the stopper bracket 500 contacting the stopper 400 to protect the stopper bracket 500. [ The stopper bracket 500 rotates and is continuously struck by the stopper 400. Since the contact surface is easily damaged, the surface to be contacted is protected by the protective member 503 detachably attached to the contact surface, and when the protective member 503 is damaged, the entire stopper bracket 500 need not be replaced Only the protection member 503 can be detached and replaced, thereby reducing the replacement cost.

Since the stopper bracket 500 is extended in the circumferential direction, the load applied to the surface of the stopper 400 that contacts the stopper 400 when struck is dispersed throughout the extended stopper bracket 500, so that the durability of the stopper bracket 500 can be enhanced .

The stopper support 700 may be a member for fixing the stopper 400 at a predetermined position and may include first and second stopper supports 710 and 720 for supporting the first and second stoppers 400, respectively.

The first and second stopper supporting portions 710 and 720 may include first and second body attachment portions 711 and 721 and first and second stopper insertion holes 712 and 722, respectively.

The first and second body attachment portions 711 and 721 are respectively attached to the opposite side surfaces of the body portion 100 and the first and second body insertion portions 703 First and second insertion grooves (not shown) 103 are respectively formed on the side surfaces of the body portion 100 corresponding to the stopper supporting portion 700 and the body portion 100, Thereby enhancing the bonding strength of the substrate 100.

At this time, it is preferable that the first and second insertion grooves are formed integrally with the first and second stopper supporting portions to further increase the engaging force.

The first and second stopper inserting holes 712 and 722 are formed at the height of the stopper bracket 500 so that the first and second stoppers 410 and 420 are inserted, respectively.

The stopper 400 and the stopper bracket 500 may be in contact with each other depending on the length of the first and second stoppers 410 and 420 inserted into the first and second stopper insertion ports 712 and 722 . For example, when the first stopper 410 is further inserted into the first stopper insertion opening 712 to shorten the length of the stopper bracket 500 exposed from the first stopper insertion opening 712, the stopper bracket 500 originally contacts with the first stopper 410 So that the first stopper 410 is rotated. Therefore, the rotation angle of the stopper bracket 500 can be adjusted.

The rotation angle of the rotary shaft 300 is set such that the rotation angle of the stopper bracket 500 at the two points at which the first and second stoppers 410 and 420 are in contact with the stopper bracket 500, Is a value (? -?) Obtained by subtracting the angle? Of each point at which both ends of the bracket 500 are in contact with the first and second stoppers 410 and 420.

That is, as described above, changing the position of the stopper 400 changes the angle?.

On the other hand, the angle? Can be changed by adjusting the length of the stopper bracket 500 extending in the circumferential direction.

The second embodiment of the present invention differs from the first embodiment in the structure of the stopper bracket. Hereinafter, description of the same components as those of the first embodiment will be omitted, and components having a difference from the first embodiment will be described with reference to FIGS. 4 and 5. FIG.

A plurality of stopper brackets (500) are provided and can be additionally provided or removed as needed.

The stopper bracket 500 may include a first stopper bracket 510 and a second stopper bracket 520.

The second stopper bracket 520 extends from the first stopper bracket 510 in a circumferential direction about the rotation axis of the rotary member 300 and is engaged with the first stopper bracket 510 in a state of being in contact with the first stopper bracket 510.

From this, the stopper bracket 500 can be simply attached and detached, so that the rotation angle of the rotation unit 300 can be adjusted.

4, the angle? Of the first and second stoppers 410 and 420 is set to (? -?), And the angle? The first stopper bracket 510 is 90 degrees and the second stopper bracket 520 is 45 degrees and the rotation angle when only the first stopper bracket 510 is provided is 90 degrees, And the second stopper brackets 510 and 520, the angle of rotation is 45 degrees.

Therefore, the stopper bracket 500 can be additionally attached or removed as needed, so that the rotation angle of the rotator unit 300 can be easily adjusted.

At this time, the angle display unit 900 is provided on one surface of each stopper bracket, so that the user can easily recognize the angle of the stopper bracket to be selected.

On the other hand, the concave and convex structures are formed on both end faces of the stopper bracket 500, so that the engagement force of the stopper bracket 500 can be increased.

For example, a convex portion 515 is formed on one end face of the first stopper bracket 510, a convex portion 515 is formed on the other end face, and a convex portion 525 is formed on the second stopper bracket 520 similarly The convex portion of the second stopper bracket 520 is inserted into the concave portion 515 of the first stopper bracket 510 to increase the engaging force of the first and second stopper brackets 510 and 520.

At this time, it is preferable that the convex portion and the concave portion are formed in a portion of the surface of the stopper bracket 500 which is in contact with the stopper 400 or the other stopper bracket 500 except the area A, which is in contact with the stopper 400.

While the invention has been shown and described with reference to certain embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100:
110, 120: first and second piston chambers
130:
140, 150: first and second covers
200: piston part
210, 220: first and second pistons
300:
310; Gear
320:
330: Bracket coupling part
340: Bearing cover
400: Stopper
500: Stopper bracket
501:
502: protrusion
503: Protection member
600: Bracket support
610:
620: Stopper bracket coupling part
630:
700: stopper support
900:

Claims (6)

A body portion having a plurality of piston chambers formed therein;
A piston portion having first and second pistons each of which is inserted into the plurality of piston chambers and on which a rack is formed so as to linearly move by fluid pressure;
A rotating machine part installed between the plurality of piston chambers and rotating by the rack;
First and second stoppers spaced apart from the circumference of the rotator to rotate the rotator fisher within a predetermined angular range;
A stopper bracket protruding in a radial direction around a rotational axis of the rotary member and extending in the circumferential direction to stop the rotary member by contact with the first and second stoppers; / RTI >
Wherein the stopper bracket includes a first stopper bracket and a second stopper bracket extending in the circumferential direction from the first stopper bracket and engaged with the first stopper bracket in a state of being in contact with the first stopper bracket,
Wherein the rotation angle of the rotary cylinder is adjusted according to a length of the first and second stopper brackets extending in the circumferential direction and whether the first and second stopper brackets are provided. The method according to claim 1,
And a bracket supporting portion provided on the upper portion of the rotary member to detachably attach the stopper bracket. The method of claim 2,
Wherein a concavo-convex structure is formed on a surface where an outer circumferential surface of the bracket supporting portion and an inner circumferential surface of the stopper bracket are in contact with each other. delete The method according to claim 1,
A stopper supporting part attached to a side surface of the body part, the stopper supporting part having a stopper inserting hole at a height at which the stopper bracket is provided; Further comprising:
Wherein the stopper adjusts the position of contact with the stopper bracket according to a length inserted into the stopper insertion port. The method according to claim 1,
Wherein the stopper bracket includes a protective member detachably attached to a surface of the stopper bracket in contact with the stopper.
KR1020160022084A 2016-02-24 2016-02-24 Rotary cylinder KR101862295B1 (en)

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KR1020160022084A KR101862295B1 (en) 2016-02-24 2016-02-24 Rotary cylinder

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Application Number Priority Date Filing Date Title
KR1020160022084A KR101862295B1 (en) 2016-02-24 2016-02-24 Rotary cylinder

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KR20170100102A KR20170100102A (en) 2017-09-04
KR101862295B1 true KR101862295B1 (en) 2018-07-06

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112947599A (en) * 2021-03-09 2021-06-11 南京协鑫新能源动力技术研究院有限公司 Solar tracking system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002130209A (en) * 2000-10-30 2002-05-09 Koganei Corp Oscillating actuator
KR20060019369A (en) * 2004-08-27 2006-03-03 화인자동화(주) Rotary actuator
JP3755072B2 (en) * 1997-10-06 2006-03-15 株式会社近藤製作所 Small rotary actuator
KR100716240B1 (en) * 2005-11-28 2007-05-09 (주)주강 로보테크 Rotary cylinder possible in intermediate stoppage
KR20100032822A (en) * 2008-09-18 2010-03-26 에스엠시 가부시키가이샤 Double rack and pinion swinging apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3755072B2 (en) * 1997-10-06 2006-03-15 株式会社近藤製作所 Small rotary actuator
JP2002130209A (en) * 2000-10-30 2002-05-09 Koganei Corp Oscillating actuator
KR20060019369A (en) * 2004-08-27 2006-03-03 화인자동화(주) Rotary actuator
KR100716240B1 (en) * 2005-11-28 2007-05-09 (주)주강 로보테크 Rotary cylinder possible in intermediate stoppage
KR20100032822A (en) * 2008-09-18 2010-03-26 에스엠시 가부시키가이샤 Double rack and pinion swinging apparatus

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