WO1999014506A1 - Rotator device - Google Patents
Rotator device Download PDFInfo
- Publication number
- WO1999014506A1 WO1999014506A1 PCT/SE1998/001409 SE9801409W WO9914506A1 WO 1999014506 A1 WO1999014506 A1 WO 1999014506A1 SE 9801409 W SE9801409 W SE 9801409W WO 9914506 A1 WO9914506 A1 WO 9914506A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- adjustable
- rotation stop
- rotary actuator
- rotation
- housing
- Prior art date
Links
Classifications
-
- 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
- F15B15/12—Characterised by the construction of the motor unit of the oscillating-vane or curved-cylinder 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
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/24—Other details, e.g. assembly with regulating devices for restricting the stroke
Definitions
- This invention concerns a device in connection with a rotary actuator according to the preamble of claim 1.
- Such a device is previously known from for example DE-C2-39 43 716.
- the stop elements are adjustable in the rotational direction by friction means with screws.
- This device is relatively expensive and complicated to use. Besides it may occur that the stop elements are not sufficiently fastened and that they therefore may be displaced, for example after a certain time of use.
- a cover is provided for protection which must be removed in order to allow adjustment.
- the invention also provides possibility of providing the adjustable part with a setting scale, which is easily readable from the outside and which allows simple adjustment as well as control that a correct setting has been made.
- the fastening portion may be a unit which is separate from the rotary actuator housing but attachable thereto or simply an integral part of the rotary actuator housing which in that case provides the necessary connecting elements for allowing setting and fixing of the adjustable portion.
- the feature of claim 8 provides a very advantageous aspect of the invention meaning that a rotation position detector which is inserted into the receiving channel automatically follows the adjustment of the rotation stop housing and thereby the rotation stop element. This provides a considerable simplification compared to the prior art, wherein separate holders for rotation position detectors are provided which have to be set separately.
- Fig. 1 shows a detail of a limiting device according to the invention partly in a section perpendicular to the axis of the device
- Fig. 2 shows the device of Fig. 1 in an axial section
- Fig. 3 shows the device according to the invention connected to a rotary actuator.
- the device 1 of Fig. 1 for limiting a rotational movement includes an adjustable portion of a rotation stop housing (item 2 is a section through a "second" portion of this housing) .
- the portion 2 is essentially ring-shaped and adjustable in the rotational direction and fixable. Inwardly it provides a rotation stop 3 carrying a rotation stop element 4 which is adjustable by screwing in its axial direction, and which is intended to co-operate, limiting, with contact cushioning elements 5 on a rotary arm, which, as usual, is fastened to a shaft 10 of a rotary actuator.
- the figure further shows a channel 6, which in this case is comprised of a one-way bore, obliquely into the material of portion 2.
- This channel 6 is intended for receiving a rotation position detector, which is intended to detect a position of the rotary arm 9.
- a rotation position detector which is intended to detect a position of the rotary arm 9.
- magnetic detectors may be mentioned, which senses the presence of a magnet 8 being provided outmost on the rotary arm 9. 7 indicates a locking screw for fixing a detector being inserted into the channel 6.
- Fig. 1 also shows a rotation stop 3' having a rotation stop element 4', both elements belonging to a "first" portion 2' (see Fig. 2) of a device for limiting a rotational movement.
- the above described second portion 2 is shown in Fig. 2 as is also the first portion 2' of the device which is positioned axially displaced with respect to the second portion and which is generally cup-shaped and having a central hole 14 for a rotary actuator shaft bearing 13.
- the hole 14 further receives a reduced diameter portion 10' of a rotary actuator shaft 10, which is inside said bearing 13 and which further outmost is provided with an axial stop element, here a screw 12, between which element 12 and the bearing 13 a spring 11 is arranged.
- the spring 11 thus presses the bearing 13 and thereby the entire first portion 2' of the rotation stop housing and thus also its other portions 2 in the direction against the rotary actuator which is indicated with thin lines and is indicated with 18.
- a fixing portion 17 is fastened to this rotary actuator housing 18 which portion 17 is a part of the rotation stop housing in this embodiment.
- a first toothing 15 having radially extending teeth which in the position shown in the Figure prevents relative rotation between the portions 2 and 2', is provided between the first portion 2' and the second portion 2 and in more detail between the axially directed edge surfaces of the cup 2' and the ring.
- This arrangement gives a very rigid locking which can not be obtained by the conventional friction lock arrangement.
- the locking is also automatic by the axial spring load between the parts. In order to prevent play, also after some use and thereby possible wear between the teeth, they may have a tapering cross-section a certain angle in the direction of the free ends of the teeth.
- the craftsman In order to set a desired rotational limitation in two directions, the craftsman firstly only has to grip the envelope surface of the second portion, pull this portion axially to the left in Fig. 3 so that the co-operating teeth of the second toothing are disengaged from each other. Hereby the rotation of the second portion is allowed (in particular together with the first portion) so that the desired rotation stop 3 may be set as desired. After having completed the adjustment, the second portion may again be engaged through the second toothing 16 with the fastening portion 17 with the aid of the force of the spring 11. Fine adjustment may be obtained by screw setting the associated rotation stop element 4 in Fig. 1.
- the envelope surface of the first portion 2' of the rotation stop housing is gripped, so that the co-operating teeth on the first toothing 15 are disengaged whereupon also the first portion 2 ' is adjustable in the rotational direction to a desired position of the rotation stop 3' . Fine adjustment may be obtained with the aid of the element 4' .
- the invention thus provides very simple and efficient setting for the craftsman.
- Fig. 3 shows the device 1 for limiting a rotational movement being attached to the housing 18 of a rotary actuator. 19 indicates the cables to the rotation position detectors which are inserted into the respective channel 6 (see Fig. 1) .
- the device according to the invention may thus include only one adjustable part, in cases where for example the rotary actuator itself is used for limiting the movement in the other direction. Further, the adjustment may be achieved otherwise than through an axial displacement and turning. It is thus within the scope of the invention to provide also such devices where the setting rotation may be stopped through other means than be above described axial displacement and co-operating teeth. For example locking pins, screws or other fastening elements may thus be used for this purpose.
- the fastening portion may be a separate part of the rotation stop housing or an integral part of a rotary actuator housing.
- the rotary actuator housing is provided with the necessary elements such as for example toothing, locking recesses or the like for co-operation with the respective adjustable portion of the rotation stop housing.
- the invention provides a cost-effective solution which among other things depends on the parts of the rotation stop housing with integral rotation stop being easily manufactured and easily mounted.
- the invention also allows the different parts to be manufactured through rational production methods whereby for example die-casting in an aluminium alloy or possibly forming in a plastic material or in a plastic composite are contemplated.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Fluid-Damping Devices (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000512014A JP2001516855A (en) | 1997-09-03 | 1998-07-23 | Rotating device |
DE69815535T DE69815535T2 (en) | 1997-09-03 | 1998-07-23 | ROTATION DEVICE |
EP98934122A EP1007856B1 (en) | 1997-09-03 | 1998-07-23 | Rotator device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9703172-8 | 1997-09-03 | ||
SE9703172A SE510354C2 (en) | 1997-09-03 | 1997-09-03 | Device for rotary actuator and rotary actuator with such device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999014506A1 true WO1999014506A1 (en) | 1999-03-25 |
Family
ID=20408125
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1998/001409 WO1999014506A1 (en) | 1997-09-03 | 1998-07-23 | Rotator device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1007856B1 (en) |
JP (1) | JP2001516855A (en) |
DE (1) | DE69815535T2 (en) |
SE (1) | SE510354C2 (en) |
WO (1) | WO1999014506A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007118538A1 (en) * | 2006-03-31 | 2007-10-25 | Festo Ag & Co. Kg | Fluid-actuated rotary drive |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3943716C2 (en) * | 1989-12-14 | 1995-01-05 | Festo Kg | Motor of oscillating-piston type |
-
1997
- 1997-09-03 SE SE9703172A patent/SE510354C2/en not_active IP Right Cessation
-
1998
- 1998-07-23 EP EP98934122A patent/EP1007856B1/en not_active Expired - Lifetime
- 1998-07-23 JP JP2000512014A patent/JP2001516855A/en active Pending
- 1998-07-23 WO PCT/SE1998/001409 patent/WO1999014506A1/en active IP Right Grant
- 1998-07-23 DE DE69815535T patent/DE69815535T2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3943716C2 (en) * | 1989-12-14 | 1995-01-05 | Festo Kg | Motor of oscillating-piston type |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007118538A1 (en) * | 2006-03-31 | 2007-10-25 | Festo Ag & Co. Kg | Fluid-actuated rotary drive |
US7739944B2 (en) | 2006-03-31 | 2010-06-22 | Festo Ag & Co. Kg | Fluid operated rotary drive |
CN101415954B (en) * | 2006-03-31 | 2012-11-28 | 费斯托股份有限两合公司 | Fluid-actuated rotary drive |
Also Published As
Publication number | Publication date |
---|---|
SE9703172L (en) | 1999-03-04 |
SE510354C2 (en) | 1999-05-17 |
EP1007856B1 (en) | 2003-06-11 |
JP2001516855A (en) | 2001-10-02 |
SE9703172D0 (en) | 1997-09-03 |
DE69815535T2 (en) | 2004-05-13 |
EP1007856A1 (en) | 2000-06-14 |
DE69815535D1 (en) | 2003-07-17 |
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