EP4233158A1 - Cylindre électrique, cylindre électrique doté d'un aimant pour déterminer la position d'un élément rotatif d'un cylindre électrique et utilisation d'un aimant pour déterminer la position d'un élément rotatif - Google Patents

Cylindre électrique, cylindre électrique doté d'un aimant pour déterminer la position d'un élément rotatif d'un cylindre électrique et utilisation d'un aimant pour déterminer la position d'un élément rotatif

Info

Publication number
EP4233158A1
EP4233158A1 EP21794866.0A EP21794866A EP4233158A1 EP 4233158 A1 EP4233158 A1 EP 4233158A1 EP 21794866 A EP21794866 A EP 21794866A EP 4233158 A1 EP4233158 A1 EP 4233158A1
Authority
EP
European Patent Office
Prior art keywords
electric cylinder
housing
motor
control device
cylinder according
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
Application number
EP21794866.0A
Other languages
German (de)
English (en)
Inventor
Jeremias WEHRLI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cyltronic Ag
Original Assignee
Cyltronic Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Cyltronic Ag filed Critical Cyltronic Ag
Publication of EP4233158A1 publication Critical patent/EP4233158A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003—Couplings; Details of shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/2015—Means specially adapted for stopping actuators in the end position; Position sensing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2031—Actuator casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/2075—Coaxial drive motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
    • H02K2211/03—Machines characterised by circuit boards, e.g. pcb
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof

Definitions

  • Electric cylinder electric cylinder with a magnet for determining the position of a rotary element of an electric cylinder, and use of a magnet for determining the position of a rotary element
  • the invention relates to an electric cylinder and an electric cylinder with a magnet for determining an angular position and an axial position of an extending element.
  • Known electric cylinders include an electric motor in order to control a lifting movement of an extension element by converting a rotary movement of a motor into a linear movement of the extension element.
  • Previous versions of electric cylinders are large in relation to their stroke length. Furthermore, the use of electric cylinders is usually provided with an external and/or large control device and the motor is arranged either coaxially or offset to the side of the spindle device.
  • An electric cylinder is described in EP3429065A1.
  • the motor, as well as the associated electronics and spindle devices and traversing element are located in a housing.
  • An electric motor is used, which is mounted offset to the spindle device axis and drives the spindle device via a mechanical transmission. This drive moves the spindle device and moves the extending element.
  • This device has the disadvantage that it does not save space and is therefore not able to compete with established pneumatic cylinders.
  • an electric cylinder which includes a motor with a stator and rotor, a spindle device with a rotary element and an extension element, a control device and a housing with a housing interior.
  • the controller controls the engine.
  • the rotor and the rotary element have the same axis of rotation, so that the motor drives the spindle device.
  • the rotor is preferably fixed on the rotating element.
  • the control device includes a printed circuit board for the motor control, the motor, the rotary element and the control device and in particular the spindle device being arranged in the interior of the housing.
  • Such an electric cylinder has a very space-saving design and does not require an external controller.
  • the circuit board can be rigid. Furthermore, exactly one printed circuit board can be provided.
  • rigid printed circuit board means a non-plastically deformable printed circuit board, which in particular has a flat, planar surface on which the electronic components can be attached.
  • a printed circuit board under one of the sides of the electric cylinder assumes that the control device is optimized with regard to the limited space inside the housing and that all electronic components can be mounted on a printed circuit board, with the dimensions of the electric cylinder including the layout of the printed circuit board being kept as small as possible.
  • a printed circuit board in the housing facilitates maintenance, reduces production costs and enables a smaller housing.
  • the arrangement of such a printed circuit board enables a short connection to the motor, which has a positive effect on the electromagnetic compatibility behavior.
  • the printed circuit board and its electronic components are arranged in such a way that the moving components, such as the extending element or the spindle nut, have the best possible electromagnetic compatibility with them.
  • the rotor and the rotating element also have the same axis of rotation. This has the advantage that no additional mechanical transmission is required and the motor can be mounted directly behind or coaxially with the rotating element, which means further space and cost savings.
  • the preferably fixing of the rotor on the rotary element offers the advantage of saving a mechanical gear or other transmission elements such as a clutch.
  • the consequence of this is that the bearing of the spindle device is also the bearing of the motor, and therefore fewer components are required and the costs are minimized.
  • the spindle device of the electric cylinder preferably comprises a spindle nut, which grips the thread of the rotating element and is rigidly connected to the extending element by means of a thread on the spindle nut, without an additional connecting element and the rotational movement of the rotating element converts into an axial extending movement of the extending element converts .
  • This structure is also very space-saving and as low-wear as possible.
  • the electric cylinder preferably includes a torque support between the spindle nut and the extending element.
  • the torque arm preferably consists of a metal ring and a plastic slider or a single plastic part.
  • This torque support serves to transmit the forces of the spindle device resulting from the torque to the slideway in the housing.
  • the printed circuit board of the electric cylinder preferably comprises small and large electronic components arranged perpendicularly to the plane of the printed circuit board in relation to the structural height. At least one of these electronic components, preferably all large electronic components, in particular transistors and/or wall ler, are arranged at the edge of the circuit board, in particular at the edge of a longer side of the circuit board.
  • the printed circuit board takes up less space inside the housing.
  • the larger electronic components in particular transistors and/or converters, can be arranged in a small space in the housing in order to ensure the smallest possible housing. Therefore, the electronic components are preferably mounted on the printed circuit board in such a way that they are mounted as far away from the spindle axis as possible and protrude into the housing interior to the sides of the spindle device, since space is available at this point.
  • the printed circuit board this means that the larger electronic components are fitted as far as possible on the edge of the longer sides of the rigid printed circuit board with the longest extension of the electronic components perpendicular to the printed circuit board.
  • the control device of the electric cylinder preferably includes two connections. One connection is used for the control device to supply power and voltage, and one connection is used for communication with the control device.
  • connections of the control device have the advantage that a high degree of safety is ensured in the event of a defect or failure, since the power supply is independent of the controller.
  • the connections of the control device are advantageously designed in such a way that they can be connected and operated in the same way as a pneumatic cylinder and can therefore serve a wide range of applications without the disadvantage of having to rely on compressed air.
  • the control device of the electrocylinder preferably comprises an interaction element.
  • This interaction element includes a Control elements and/or status indicators.
  • the adjustment elements are used to adjust the speed and/or force directly on the cylinder.
  • An interaction element directly on the electric cylinder offers the advantage that no external electronics are required.
  • the adjustment options are attached directly to the electric cylinder in the same way as the adjustment options of a pneumatic cylinder, so that direct control is possible without external electronics.
  • Possible elements that can be adjusted with the interaction element are: the potentiometer for the retraction and extension speed and the force. The commutation and regulation of the motor is then automatically adjusted by the control device.
  • the interaction element preferably has adjustment screws for the speed when extending and retracting (Speed IN/OUT) and an adjustment screw for the force.
  • the interaction element preferably includes status display elements that display the settings of the user's values and/or the status of the device, preferably by means of lights, diodes, LEDs and/or a display.
  • the interaction element is attached directly to the housing with fastening elements and preferably serves at least partially as a housing cover.
  • the electric cylinder preferably has connection elements.
  • connection elements is arranged on the extending element.
  • a connection element is formed on one or both end faces of the housing.
  • connection elements offer advantages through, in particular standardized, mounting options and flexible use of the electric cylinder.
  • connection elements have the advantage that the electric cylinder can be equipped with an appropriate connection element depending on the problem. Analogous to a pneumatic cylinder, preferably for a 32 mm cylinder diameter, all add-on parts can be used. Thus, the electric cylinder is not only competitive with a pneumatic cylinder in terms of appearance, in particular the connection elements (preferably according to DIN ISO 15552), but also in terms of possible applications.
  • the housing of the electric cylinder is preferably so small that an orthogonal section to the axis of rotation through the electric cylinder is never wider than 150%, in particular 130%, more particularly 120%, of the outer diameter of the motor.
  • the outer diameter of the motor means the outer diameter of the outer part of the motor, ie either the stator as the outer part or the rotor as the outer part.
  • no part of the housing is very much wider than the motor. This has the advantage that the case is very small, despite the internal attachment of all components.
  • the electric cylinder preferably has two ball bearings arranged coaxially to the rotary element and arranged on both sides of the rotor.
  • the housing of the electric cylinder has a substantially polygonal, preferably substantially quadrangular, particularly preferably substantially square housing in cross section and/or the body of the housing is made of an aluminum extruded profile.
  • the polygonal shape has the advantage that it allows a printed circuit board to be accommodated in the interior of the housing in as space-saving a manner as possible, without enlarging the housing.
  • the square shape is particularly suitable because it also corresponds to the shape of a conventional pneumatic cylinder.
  • the housing of an electric cylinder should ideally be made of a light but stable material.
  • An aluminum extruded profile has a low weight, is inexpensive and is therefore very suitable.
  • the use of an extruded aluminum profile enables the electric cylinder to have a very compact design with the advantage that no external electronics or even cooling have to be used. Nevertheless, the electric cylinder could very easily be provided with additional internal cooling, such as fans or heat exchangers, or external cooling because the stator coils, which are heated during operation, are mounted on the outside of the housing.
  • the size of the motor is therefore easy to adjust, which can slightly improve the heat dissipation of the motor.
  • no compression device with corresponding lines and valves is necessary.
  • no components in the electric cylinder are cooled by rapidly expanding air. Since the electric cylinder can still be used in the same way as pneumatic cylinders, there are many areas of application that are difficult to access and/or do not allow external components.
  • the electric cylinder is preferably characterized in that the housing, in particular the housing and the housing cover, has essentially the same cross-section over the entire length, apart from the connections and status display elements.
  • the housing of the electric cylinder should also preferably include a housing cover on the body side and two on the front side.
  • one of the end-side housing covers is preferably at the same time the motor housing of the motor.
  • the circuit board can be covered with the body-side housing cover on which the interaction elements are arranged.
  • the housing cover is preferably detachable from the housing body fastened, such as screwed. This has the advantage that easily accessible access to the electronic components is guaranteed.
  • the rigid printed circuit board can be exchanged easily, or a defect in the interaction elements can be remedied.
  • the attachment of the motor in the housing cover enables a compact design, since the front housing cover is also the motor housing, thus saving space.
  • the housing cover of the motor can be designed in one piece, so that the motor is essentially completely inside the housing cover.
  • Fastening elements for fastening the housing cover to the housing can be arranged in such a way that a connecting groove between the housing and the housing cover is arranged axially next to the motor.
  • a bearing for supporting the spindle can also be located in the housing cover. Thus the spindle rotates without imbalance.
  • the motor thus drives the spindle directly, not the spindle nut.
  • the cover can thus be adapted to the dimensions of the rotor and/or stator and additional space can be saved in the interior of the housing, which leads to smaller external dimensions of the cylinder.
  • the front cover with the opening for the extending element also includes a bearing and seal for the extending element.
  • the seal prevents damage and contamination from dust or dirt, as well as wear and tear from humidity.
  • the housing covers are fastened to the housing with one or more fastening elements and are preferably detachable.
  • a slide bearing is often placed in the space between the rotary element and the extension element at the end of the rotary element in order to better support the rotary element.
  • An electric cylinder preferably as described above, comprises a motor with a stator and a rotor, a spindle device with a rotary element and an extension element.
  • the spindle device includes a combination bearing.
  • Such a combination bearing includes a sliding bearing and a ball bearing. This combination bearing is placed between the rotary element and the extension element, preferably on a side of the rotary element furthest from the engine.
  • the combination bearing thus increases the durability of the electric cylinder. This is a particular advantage over many other electric cylinders.
  • the combination bearing is mounted as close as possible to the maximum distance to the motor between the rotary element and the travel element, because there the longest lever arm is present. Accordingly, the combination bearing is preferably arranged on the end face facing away from the motor between the rotary element and the extending element.
  • the motor of the electric cylinder is preferably a brushless motor, since it is subject to significantly less wear and tear and has a longer service life.
  • Determining the axial position of the extending element and the angular position of the rotating element are sometimes only possible with electric cylinders in the prior art using large components and are therefore associated with a large amount of space. Determining the axial position and angular position should also allow conclusions to be drawn about the position of the rotor in relation to the stator, as this has the advantage that the motor can be commutated and a brushless motor can be used.
  • the electric cylinder in particular an electric cylinder as described above, comprises a motor with a stator and rotor, a spindle device with a rotary element and an extension element, in particular a control device, and at least one magnet on or in an end face of the rotary element, and an electronic transmitter device.
  • the encoder device is arranged essentially axially to the axis of rotation of the rotary element. The encoder device is used to read the Angular position of the magnet and/or determining the axial position of the extension element.
  • This attachment of the transmitter device and the magnet has the advantage that the position of the magnet can be read out in a very space-saving manner.
  • attachment of the magnet to the rotor would also be conceivable if the rotor is not firmly connected to the rotating element.
  • the magnet is preferably arranged on the axis of rotation of the rotary element, since this offers the advantage that no imbalance can occur.
  • the magnet is designed in such a way that the south pole of the magnet is arranged on one side of the axis of rotation and the north pole of the magnet is arranged on the other side of the axis of rotation, opposite the south pole.
  • the axial position of the extension element can now be determined by the control device and/or transmitter device. This offers the advantage that the position of the extending element can be determined without the reading device consisting of magnet and transmitter device having to carry out an axial movement along the axis of rotation of the rotary element.
  • the magnet can also be attached to the side of the end face of the rotary element, away from the axis of rotation, while the transmitter device is attached centrally and axially to the rotary element.
  • the information on the angular position therefore results from the change in the direction of the magnetic field as a result of the rotation of the rotating element.
  • the electric cylinder preferably comprises a magnet which has the north pole on one side radially away from the axis of rotation. has and in particular has the south pole radially on the opposite side of the axis of rotation.
  • the magnet preferably has a polarity orthogonal to the axis of the rotating element. This offers the advantage that it is placed in the middle without shifting the center of gravity of the rotary element and can be read out easily.
  • a diametral magnet is very well suited for this application, but other magnet shapes are also possible.
  • the object is also preferably achieved through the use of a magnet on or in an end face of the rotary element, that the magnet with transmitter device is used to determine the rotational speed of the rotary element and/or commutation of the motor based on the signal from the electronic transmitter device and/or control device.
  • the position/angular position of the rotor in relation to the stator must be known at all times.
  • the position of the rotor is also determined by the angular position of the magnet. This has the advantage that the relative position of the rotor to the stationary stator can be measured at any time.
  • a brushless motor preferably a BLDC motor
  • BLDC motor is more efficient than brushed motors or stepper motors, which have a high holding torque and are less dynamic, and have a longer service life due to the lower wear.
  • the commutation of the motor ie the energization of the right coils at the right time, must take place via the electronic components of the control device and/or transmitter device and the specific angular position.
  • FIG. 1 A longitudinal section through an electric cylinder according to the invention
  • FIG. 2 an external view of the housing of the electric cylinder.
  • Figure 3 an external view of the housing of the electric cylinder
  • Figure 4 a cross section of the electric cylinder
  • Figure 5 an external view of the end of the electric cylinder facing the motor
  • FIG. 6 an external view of the end of the electric cylinder facing away from the motor.
  • the same reference symbols in the figures identify the same components.
  • FIG. 1 shows an electric cylinder 27 according to the invention with a rigid circuit board 13 and a control device 14 .
  • a motor 8 with a stator 9 and a rotor 10 and a spindle device 4 with a rotating element 5 and extending element 6 are arranged in the housing interior 26 .
  • the interior space 26 of the housing is closed off from the outside by the delimitation of the housing 21 and all the housing covers 1 , 3 and 12 .
  • the opening through which the extending element protrudes from the electric cylinder in the front housing cover 3 also delimits the interior space 26 of the housing.
  • the magnet 15 and the transmitter device 16 for reading out the angular position and axial position of the extending element 6 are also arranged.
  • Figure 1 also shows the spindle nut 7 and the associated position of the torque support 19 and the use of a combination bearing 20, which consists of a slide bearing and ball bearing, between the rotary element 5 and extension element 6, and the components of the control device 14: the rigid printed circuit board 13 , the interaction element 12 and the connections 11 .
  • a combination bearing 20 which consists of a slide bearing and ball bearing, between the rotary element 5 and extension element 6, and the components of the control device 14: the rigid printed circuit board 13 , the interaction element 12 and the connections 11 .
  • FIG. 1 shows the arrangement of the motor 8 coaxially with the spindle device 4 within the housing cover 1 .
  • the rotor surrounded by two grooved ball bearings 17, is rigidly connected to the rotating element 5 of the spindle device 4 in this embodiment.
  • the housing covers 1 and 3 and the extension element 6 also include connection elements 18 .
  • the motor of the electric cylinder can convert current at the right time into a rotational movement of the rotor 8, which is supported by the grooved ball bearings 17 on both sides.
  • the rotary element 5 also rotates.
  • the rotating element 5 engages in a spindle nut 7 which transfers the rotating movement to a translational movement of the extending element 6 .
  • the extending element 6 can only perform a translational movement in and out of the housing 21 and does not rotate.
  • the two ball bearings around the rotor 17 and the combination bearing 20 at the front end of the rotary element 5 ensure that friction is minimized, the force is not greatly reduced, or parts wear out quickly.
  • This translational movement allows the extension element 6 , which protrudes through an opening in the front housing cover 3 , to be moved out of the housing interior 26 and back into the housing interior 26 .
  • the extending element 6 can protrude partially out of the housing interior 26, as can be seen in FIG.
  • the speed, force, energization of the stator 9 and determination of the axial position of the extending element 6 and angular position is controlled or regulated by the control 14 and/or transmitter device 16 .
  • FIG. 2 shows the side view of the electric cylinder from FIG. Furthermore, Figure 2 shows the attachment of the rear housing cover 1 and front housing cover 3 with screws 29 preferably with thread lock.
  • the cross section B of the electric cylinder is shown in FIG.
  • the thread dimension of the connection element 18 of the extending element 6 was denoted by KK.
  • the length A designates the length of the connecting element 18 of the extending element 6 outside of the housing 21 .
  • the length L is less than or equal to the following dimension :
  • H designates the maximum stroke length in millimeters and Lb, the length dependent on the cylinder force ( Fmax ), with the cylinder force ( Fmax ) representing the maximum force that can be achieved by the electric cylinder 27, with Lb in particular relating to the following force-dependent characteristics that the table can be taken from .
  • pneumatic cylinder pendant means that the values are to be understood analogously to a pneumatic cylinder with such a piston diameter.
  • the length TG is shown in FIG.
  • Figure 3 shows the top of the electric cylinder 27 with the
  • Control device 14 consisting of the terminals 11 and the Interaction element 12 .
  • the interaction element 12 has setting elements 23 , 24 and 25 for the speed adjustment 24 and force adjustment 23 , as well as status display elements in the form of lights 25 , preferably LEDs.
  • the setting elements 24 of the speed adjustment enable different settings when extending (OUT) and retracting (IN) the extending element 6 .
  • the body-side housing cover is at the same time the interaction element 12 , which in this exemplary embodiment is fastened by 6 screws 28 .
  • FIG. 4 shows the cross section B of the electric cylinder 27 at the location of the connections 11 and the interior space 26 of the housing.
  • the spindle device 4 and the rigid printed circuit board 13 can be seen.
  • FIG. 4 shows the form in which the large electronic components 22 are arranged and protrude into the interior of the housing in order to save space. This space-saving construction enables the function of the electric cylinder and its properties to be enabled with only one rigid printed circuit board 13 of the control device 14 .
  • a preferably insulating, thermally conductive film is applied to the electronic components 22 and it is ensured that the electronic components do not touch the housing.
  • the housing 2 also encloses the spindle device 4 on the side of the rigid printed circuit board 13 with a housing partition wall 2a. It can thereby be ensured that possible inclusions of dust, dirt or moisture, which result from the retraction and extension of the extension element 6, cannot impair the control device 14.
  • the essentially square base of this version of the electric cylinder has rounded corners and the sides run slightly like a funnel to the opposite side of the electronics.
  • FIG. 5 shows the rear face of the electric cylinder 27 .
  • the rear housing cover 1 is detachably fastened with 4 screws 29 and each has 4 connection elements 18 in the form of threaded holes.
  • the distance TG referenced in the table is shown between the connection devices of the connection elements 18 of the rear housing cover 1 and the front housing cover 3 in FIG.
  • FIG. 6 shows the front face of the electric cylinder 27 with the front housing cover 3 .
  • the front housing cover 3 also has 4 connection elements 18 .
  • FIG. 6 shows the connecting element 18 of the extending element 6, in this embodiment as a thread.
  • the arrangement of the connecting elements 18 have a diameter RT and are also arranged squarely in this essentially square structure of the housing cover 1 and 3 .

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne un cylindre électrique comprenant un moteur disposé à l'intérieur du boîtier, un dispositif de commande et un dispositif à broche servant à produire un mouvement linéaire de l'élément d'extension. Le rotor du moteur et l'élément rotatif du dispositif à broche ont le même axe de rotation. Tous les éléments du cylindre électrique sont disposés de manière particulièrement compacte dans un boîtier, et le dispositif de commande comprend une carte de circuit imprimé pour la commande du moteur.
EP21794866.0A 2020-10-22 2021-10-21 Cylindre électrique, cylindre électrique doté d'un aimant pour déterminer la position d'un élément rotatif d'un cylindre électrique et utilisation d'un aimant pour déterminer la position d'un élément rotatif Pending EP4233158A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20203317.1A EP3989414A1 (fr) 2020-10-22 2020-10-22 Électrocylindre, électrocylindre doté d'un aimant permettant de déterminer la position d'un élément rotatif d'un électrocylindre ainsi qu'utilisation d'un aimant pour déterminer la position d'un élément rotatif
PCT/EP2021/079161 WO2022084427A1 (fr) 2020-10-22 2021-10-21 Cylindre électrique, cylindre électrique doté d'un aimant pour déterminer la position d'un élément rotatif d'un cylindre électrique et utilisation d'un aimant pour déterminer la position d'un élément rotatif

Publications (1)

Publication Number Publication Date
EP4233158A1 true EP4233158A1 (fr) 2023-08-30

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP20203317.1A Withdrawn EP3989414A1 (fr) 2020-10-22 2020-10-22 Électrocylindre, électrocylindre doté d'un aimant permettant de déterminer la position d'un élément rotatif d'un électrocylindre ainsi qu'utilisation d'un aimant pour déterminer la position d'un élément rotatif
EP21794866.0A Pending EP4233158A1 (fr) 2020-10-22 2021-10-21 Cylindre électrique, cylindre électrique doté d'un aimant pour déterminer la position d'un élément rotatif d'un cylindre électrique et utilisation d'un aimant pour déterminer la position d'un élément rotatif

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP20203317.1A Withdrawn EP3989414A1 (fr) 2020-10-22 2020-10-22 Électrocylindre, électrocylindre doté d'un aimant permettant de déterminer la position d'un élément rotatif d'un électrocylindre ainsi qu'utilisation d'un aimant pour déterminer la position d'un élément rotatif

Country Status (5)

Country Link
US (1) US20230383824A1 (fr)
EP (2) EP3989414A1 (fr)
JP (1) JP2023550205A (fr)
CN (1) CN116529991A (fr)
WO (1) WO2022084427A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3617989A1 (de) * 1986-05-28 1987-12-03 Mulfingen Elektrobau Ebm Asymmetrischer elektromotor
US6392322B1 (en) * 2000-01-31 2002-05-21 Precision Engine Controls Corporation Rugged explosion-proof actuator with integral electronics
DE102007038841A1 (de) * 2007-08-16 2009-02-19 Dorma Gmbh + Co. Kg Linearmotor-Anordnung
KR101558563B1 (ko) * 2008-07-28 2015-10-08 엘지이노텍 주식회사 스텝 액츄에이터
EP2499398B1 (fr) * 2009-11-13 2018-10-10 Linak A/S Actionneur linéaire
IT201700079738A1 (it) 2017-07-14 2019-01-14 Topp S R L Apparato di schermatura con alette orientabili
JP6765570B2 (ja) * 2018-04-05 2020-10-07 三菱電機株式会社 モータ、及びモータ製造方法

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Publication number Publication date
CN116529991A (zh) 2023-08-01
WO2022084427A1 (fr) 2022-04-28
JP2023550205A (ja) 2023-11-30
US20230383824A1 (en) 2023-11-30
EP3989414A1 (fr) 2022-04-27

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