WO2019091997A1 - Entraînement de meuble par moteur électrique avec accouplment par griffes - Google Patents

Entraînement de meuble par moteur électrique avec accouplment par griffes Download PDF

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Publication number
WO2019091997A1
WO2019091997A1 PCT/EP2018/080397 EP2018080397W WO2019091997A1 WO 2019091997 A1 WO2019091997 A1 WO 2019091997A1 EP 2018080397 W EP2018080397 W EP 2018080397W WO 2019091997 A1 WO2019091997 A1 WO 2019091997A1
Authority
WO
WIPO (PCT)
Prior art keywords
fork
furniture drive
sliding sleeve
drive according
electromotive furniture
Prior art date
Application number
PCT/EP2018/080397
Other languages
German (de)
English (en)
Inventor
Andreas Oberndörfer
Original Assignee
Dewertokin Gmbh
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
Priority claimed from DE202018105597.6U external-priority patent/DE202018105597U1/de
Application filed by Dewertokin Gmbh filed Critical Dewertokin Gmbh
Publication of WO2019091997A1 publication Critical patent/WO2019091997A1/fr

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Classifications

    • 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
    • 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
    • F16H2025/2071—Disconnecting drive source from the actuator, e.g. using clutches for release of drive connection during manual control
    • 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
    • F16H2025/209—Arrangements for driving the actuator using worm gears

Definitions

  • the present invention relates to a elektromo ⁇ toric furniture drive with at least one electric motor, which is at least one worm wheel in drive connection.
  • the worm wheel is designed to drive in rotation the spindle accommodated therein via a spindle holder, on which runs a spindle nut, which is articulated to a furniture part to be adjusted, for example on a head or foot part of a hospital bed or an armchair.
  • a clutch is arranged, which for the separation of the drive connection between the electric motor and spindle from a coupled drive position in which the worm wheel transmits the torque to the spindle, in a disengaged freewheeling position can be converted, in which the spindle of the worm wheel is separated and thus a freewheel of the
  • Spindle is possible, e.g. for the emergency adjustment of the furniture, e.g. the head or foot of a bed.
  • Such a furniture drive is known, for example, from DE 20 2006 009 957 U1, in which a pivotable about a pivot axis and thus acting as a rocker swivel bracket is actuated by means of a Bowden cable which opens and closes a dog clutch. This is with a coupling part against rotation with the worm wheel and with a second coupling member rotatably connected to the spindle.
  • the dog clutch When pivoting the swivel bracket, the dog clutch is pushed from the drive position to the free-running position.
  • the jaw clutch of the prior art has been well proven in practice, however, is relatively complex and subject to the flanks of the claws a steady wear, which can adversely affect the performance of the clutch over time due to the occurring game.
  • the object of the invention is to avoid the disadvantages described above at least partially or largely and in particular to provide a compact furniture drive, which is as simple as possible.
  • the invention proposes a single ⁇ Lich in the longitudinal direction along the longitudinal axis of the clutch sliding sliding sleeve or sliding sleeve, which forms a sliding coupling element, which is ⁇ finally by executing a translational movement of the drive in the freewheeling position can be transferred.
  • an electromotive furniture drive with at least one electric motor that drives at least one worm wheel, which in turn drives a spindle and wherein zwi ⁇ tween the spindle and the worm wheel is arranged a clutch with a coupling element for separating the drive connection between the worm wheel and the spindle
  • the coupling element comprises a sliding sleeve or sliding sleeve, which is guided by means of Füh ⁇ approximately means on parts of the electromotive furniture drive.
  • the sliding sleeve is therefore only in the longitudinal direction along the longitudinal axis on the outer surface of the screw Rads displaced, so linear or axially adjustable along the longitudinal axis of the worm wheel, whose central axis preferably with the central longitudinal axis of the furniture drive to ⁇ sammassi.
  • this central axis of the worm wheel further extends collinear to the axis of rotation of the spindle.
  • embodiments include guide means, with which the sliding sleeve is guided axially movable in or on the furniture drive.
  • this is done by providing projections, pins or the like, which are guided longitudinally displaceable in complementarily formed guide grooves, guide grooves or the like in the respective joining partner for the engagement of the projections.
  • the projections on the sliding sleeve are asbil ⁇ det, which are guided longitudinally displaceably in guide grooves on the inside of the surrounding housing.
  • Sliding sleeve or sliding sleeve is guided directly, that is linearly guided, but instead or additionally, an actuating element of the clutch, which adjusts the sliding sleeve or sliding sleeve linearly or axially, ie disengages.
  • the guide or linear guide of the actuating element is preferably carried out in the surrounding housing.
  • the actuating element is preferably designed as a fork or shift fork, which acts on the sliding sleeve or is in operative connection therewith.
  • Embodiments include formed on the sliding sleeve, integrally molded projections or pins, which are guided longitudinally displaceably in the surrounding housing.
  • the embodiment of the invention has decisive ADVANTAGES ⁇ le.
  • a coupling with a pivoting element requires a certain space for the pivoting element, which is usually similar to a rocker pivotable about a center, is operated at one end of the rocker and engages the other end of the rocker on the actuated part of the coupling to the To open clutch. This will be for the
  • Swivel element requires a relatively large amount of space, although ⁇ this realized a simple operation due to the lever arm.
  • On a swivel bracket for releasing the clutch can be completely dispensed with the invention, which greatly simplifies the construction of the clutch and this insbesonde ⁇ re more compact design.
  • According to the invention it is possible to make all the components of powderan ⁇ drive of plastic, which significantly reduces the price rela ⁇ hung, the manufacturing costs.
  • An essential idea is that with the plastic parts a sufficient fit is realized in order to avoid a game and thus a deflection of the fork, which can lead to tilting of the sliding sleeve and / or the fork.
  • this is realized by appropriate fit at the between the joining partners, so the fork and the sliding sleeve and the fork and the housing which receives the fork.
  • projections and seats can be provided which does not have the same areas of this subject on ⁇ wattien fit systems, but only the immediate plant areas, ie which are in operation for engaging the respective joining partners.
  • this axial projections are formed on the front of the fork, which rest in the installed position on the sliding sleeve or attack on this.
  • a further embodiment provides for the improvement of the seat and the fit accuracy that additionally or alternatively Radial projections on the radial outer side of the fork are pre ⁇ see, which in the installed position on the surrounding housing, in particular the bearing housing derived and thus ensure a ⁇ with each other and accurate positioning of the fork.
  • Radial projections on the radial outer side of the fork are pre ⁇ see, which in the installed position on the surrounding housing, in particular the bearing housing derived and thus ensure a ⁇ with each other and accurate positioning of the fork.
  • Fork in the operation consists in the provision of fixing pins or at least one fixing pin, with wel ⁇ cher the fork is guided or stored next to a pull rod for operating the fork in the surrounding housing.
  • the fixing pin extends on the outside on the back of the fork on an upper side fastening ⁇ end, particularly preferably collinear extending to a pull rod, with which the fork for disengaging actu ⁇ bar is.
  • the sliding sleeve or sliding sleeve is in particular out ⁇ forms as a substantially circumferentially closed, preferably hollow cylindrical body having on the inside a form-fitting structure which is complementary to a corresponding positive locking structure of the other gear parts, ie in the installed position or engaged form ⁇ conclusively the worm wheel connects to the spindle holder.
  • the positive locking structure comprises a spline structure, that comprises, at the worm wheel and the spindle ⁇ holder at least one side, preferably on both sides outer spline portions on which the sliding sleeve is seated with the external spline portions inner spline structure to be longitudinally displaceable, but rotationally connected.
  • the complementary form-fitting structure between the gear parts and the sliding sleeve can also be designed differently, for example comprising one or more splines or spline pieces.
  • the configuration of the form-fitting structure as a splined shaft has the particular advantage of transmitting relatively high torques even when manufacturing the gear parts made of plastic with a compact design, to realize a good fit accuracy and to enable a long service life.
  • the attached ⁇ exaggerated by the drive electric motor or the worm drives the worm gear with the preferably arranged laterally next to Schneckenradkeilwelle.
  • the sliding sleeve which forms the coupling, sits on this worm shaft shaft in a rotationally connected and longitudinally displaceable manner. Engaged transmits the sliding sleeve, the torque of
  • the sliding sleeve thus moves according to the invention when engaging and disengaging purely translatory, in particular along the central longitudinal axis of the spindle or the linear gear.
  • the disengagement is preferably carried out against a Feder Wegstel ⁇ ment, so that the sliding sleeve is thus engaged in the rest position and thus transmits the torque from the worm to the spindle holder. Only when overcoming the spring force, which pushes the sliding sleeve in the engaged drive position, the freewheel is done.
  • the sliding sleeve in the engaged Stel ⁇ ment means acting on this sliding sleeve spring, preferably designed as a spiral spring, biased.
  • moving the sliding sleeve from the engaged drive position takes place is connected to the sliding sleeve in the free-running position by a fork or shift fork, which engages around the sliding sleeve at ⁇ least one side one side or encloses, but not rotatably, so that the sliding sleeve so enclosed or Edged by the fork in this turns.
  • a pull rod on the fork preferably engages a mounting position in the upper end of the fork.
  • the pull rod which preferably takes place via a Bowden cable connected to the drawbar, so that the fork and the pull rod only a Translations- perform, but no tilting movement.
  • Holding eyes mounted tie rod is suitably federge ⁇ spans, which takes place in particular via a tie rod spring, which is preferably designed as a spiral spring.
  • the pull rod is relatively movably mounted in the housing, in particular in the inner gear housing or on the outside of the inner gear housing, but accessible from outside the Moto ⁇ rengephaseuses.
  • the fork may comprise guiding means and is designed to be as stiff as possible in order to avoid tilting or distortion during loading . In the manufacture of the fork made of plastic this can be reinforced by the training
  • the fork has two arms or free legs, which may be exposed to a bending load and rest in the installed position on the sliding sleeve.
  • the free legs engage in a circumferential groove of the sliding sleeve, or they are against a radially projecting beyond the outer surface of the sliding sleeve shoulder, a stop or the like, so that the fork, the sliding sleeve during execution the Trans ⁇ lationsterrorism entrains and thus disengages.
  • the sliding sleeve comprises a radially over the outer surface of the sliding sleeve radially projecting shoulder or sliding sleeve shoulder, against which the shift fork abuts for disengaging.
  • This fork can eg centrally have a force application area for the attack of the train arrangement, from which, starting from two fork arms of the fork, which engage around the sliding sleeve and engage in this.
  • the fork arms form with the attachment end an arcuate semicircle which surrounds the sliding sleeve in the installation position half-way or somewhat further or is seated in a receptacle of the coupling.
  • the fork arms bent in an arc shape in the front view of the shift fork extend in an angle range of at least 120 degrees, preferably 180 degrees, that is to say down to the central transverse axis.
  • the central transverse axis runs through the greatest distance between the fork arms to each other. Since the force attack of the drawbar on the fork or shift ⁇ fork is in the plane of the tie rod and the Kraftablei ⁇ tion of the shift fork takes place in a spaced-apart plane, the fork arms can ver ⁇ bend due to the lever arm. Therefore, according to the invention, guide means or stabilizing means are preferably provided which prevent tilting or tilting of the fork during disengagement. These guiding or stabilizing means are preferably formed integrally on the shift fork, but may also be designed to be attachable to this.
  • These guiding or stabilizing means may comprise a pin formed on the shift fork, which preferably extends opposite in extension of the tie rod and engages in the surrounding housing or is guided in this axially displaceable.
  • the pull rod is connected either rigidly or via a screw thread with the shift fork can constitute a further guiding and stabilization ⁇ agent.
  • the guide means are preferably out ⁇ forms as sliding guides, whose sliding surfaces correspond with sliding bearing surfaces of the joint partners.
  • the housing of the furniture drive which preferably comprises a divisible motor housing and a housed therein, also divisible Getriebege- housing, having the sliding bearing surfaces.
  • Embodiments include a one-piece gearbox ⁇ begetude or a transmission plate designed to hold the engine and / or transmission components.
  • the guiding or stabilizing means can extend between the latter and the sliding sleeve in the longitudinal direction, preferably on the front side of the fork facing the stop of the sliding sleeve
  • Axial projections include, which are geometrically designed to avoid tilting or tilting or at least reduce. This Axialvorsprünge are thus formed acting in the pressing or pulling direction between the fork and the sliding sleeve. Before ⁇ the axial projections are formed on the fork Trains t, rapid So forth from the arms of the shift fork and act as sliding surfaces or are formed as Gleitlagerflä ⁇ chen.
  • the preferred embodiment comprises the formation of the axial protrusions ⁇ each at the outer free end of the fork arms, particularly ⁇ preferably on - in the front view - on the central ⁇ transverse axis extending free ends of the fork arms.
  • a particularly preferred embodiment provides for mutually spaced pairs of axial protrusions on each fork arm of the fork.
  • a first, outer axial projection of an axial projection pair on a fork arm which is further formed at the outer end of the respective fork arm, preferably designed slightly larger or higher than a second, inner axial projection of a Axialvorsprungcrues, which further inward on the respective fork arm is trained.
  • the axial projections are formed in the front view of the shift fork above and below the central transverse axis of the overall arc-shaped switch cable.
  • the outer axial projection of an axial projection pair on a fork arm is preferably approximately 0.2-0.8 mm larger than the inner axial projection formed on the same fork arm an Axialvorsprungpases.
  • the height ratios of Axi ⁇ alvorsprünge an Axialvorsprungcrues can thus be turned off on the geometric conditions of the linear transmission that they compensate for a possible deflection or bending of the shift cable due to its material properties completely.
  • tilting and jamming of the sliding sleeve or the fork with simple and cost-effective means is effectively avoided.
  • a low rigidity of plastic can be sufficiently compensated by this surprisingly simple solution by appropriate geo ⁇ metric design, so compensated by the flexibility occurring on the plastic part who ⁇ to the desired harmonic as possible and disturbance .
  • the four axial projections of two Axialvorsprungcruen to the fork arms of the fork are preferably formed such that they compensate for the compliance of the fork arm due to its material properties so that the outer axial projection Rather abuts the joining partner as the inner axial projection, which is located closer to the point of force application of the tie rod and the traction means.
  • the two axial projections of an axial projection pair thus act as an axial projection on each fork arm of the shift fork.
  • the shift fork is therefore preferably when disengaging with these four axial projections on the shoulder of the sliding sleeve.
  • preferred embodiments include besides or in addition to the
  • Axial projections radially outwardly projecting radial projections preferably has a rising in the pulling or moving direction run-on slope, so so rise in the pulling direction of the shift fork to the middle of the radial projection.
  • Particularly preferably bevels are formed on both sides to Mit ⁇ te of the zenith.
  • the linear transmission according to the invention is preferably arranged in a multipart design and thus openable housing.
  • Embodiments of this housing comprise an outer motor housing, in particular a two-part motor housing, which is designed to hold the one driving electric motor or drive and preferably also to be fastened to the furniture to be actuated.
  • a preferably also more ⁇ turban, so openable designed gear housing for receiving the actual linear transmission is also arranged in the ⁇ sem motor housing and in which the screw driven by the preferably electromotive latestbil ⁇ Deten drive protrudes.
  • the spindle is arranged at a distance to Mittellän ⁇ gsachse, preferably Füh ⁇ agents are provided for smooth guiding of the fork
  • the guide means are integrally formed on the sliding sleeve and are preferably designed as pins or as projections, which continue in the direction of movement ⁇ the sliding sleeve.
  • the non-rotatable connection of the spindle holder with the spindle is preferably carried out via the front side between the spindle and the spindle holder inserted or driven clamping pins ⁇ , in particular two on radially opposite Sei ⁇ th between spindle holder and spindle.
  • a particular embodiment of the linear transmission is realized when the substantially hollow cylindrical spindle holder, the inside rotatably receiving the spindle in the outer side further comprises a support surface on which the worm wheel is seated.
  • the worm wheel may include a Schneckenradhülse addition to the actual worm wheel, the preference ⁇ example is formed integrally with the worm wheel and extending in the installed position on an outer support area of the spindle holder, preferably to a rear shoulder or a bearing shoulder of the spindle holder.
  • a bushing sits at a rear end on the outside of this Schneckenradhülse, which forms an outer bearing surface for a bearing that is rotatably inserted in a surrounding housing.
  • this bearing bush is seated with a rear end against a radially on the outer circumferential surface of the substantially hollow cylindrical spindle holder radially outwardly bearing radial flange, in which an additional paragraph for receiving the bearing bush can be provided for this purpose.
  • sealing means are provided to prevent the ingress of dust and liquid into the interior of the furniture drive.
  • the pin formed as a guide and / or the projections of the sliding sleeve are formed as an extension of the actuating element.
  • the guide means are associated with parts of the housing of the electromotive furniture drive.
  • a transmission housing or a gearbox mounting for supporting at least the worm wheel provided, wherein the guide means contact the transmission housing or the gearbox mounting.
  • Embodiments include sealing means on the housing to prevent the ingress of dust and liquid into the interior of the furniture drive.
  • the pins formed as a guide and / or the projections of the sliding sleeve are designed as extensions, projections, pins or the like of the actuating element.
  • the guide means are in operative connection with parts of the housing of the furniture drive.
  • a transmission housing or a gearbox mounting ⁇ tion of at least the worm wheel is provided, wherein the guide means contact the gear housing or the gearbox mounting.
  • Fig. 1 is an isometric front view of the electromotive furniture drive with closed gear and Motorge ⁇ housing;
  • FIG. 2 shows a longitudinal section of the electromotive furniture drive according to FIG. 1;
  • Figure 3 is an isometric front view of the furniture drive according to FIG 2 with removed front-side half-shell of the motor housing, but still closed Geretege ⁇ housing and in the coupled position.
  • FIG. 4 shows the view according to FIG. 3 in the disengaged freewheeling position; 5 shows a somewhat enlarged isometric view of the Mö ⁇ belantriebs of Figure 1 with the engine and gearbox housing in engaged drive position.
  • Fig. 6 is the view according to Figure 5 in the disengaged freewheel ⁇ position.
  • Fig. 7 is a further enlarged front view of the electromotive toric furniture drive formed as a linear gear in the engaged drive position with the engine open and Ren gear housing;
  • Fig. 8 is the view according to Figure 7 in a disengaged position ⁇ freewheel.
  • FIG. 10 shows the longitudinal section according to FIG. 9 in the disengaged freewheeling position
  • Figure 11 is an enlarged isometric front view of the sliding sleeve with adjacent fork
  • Figure 12 is an enlarged isometric front view of the sliding sleeve itself
  • Figure 13 is an enlarged isometric front view of the fork itself
  • Figure 14 is an end view of the front end of the sliding ⁇ sleeve with adjacent fork.
  • Figure 15 shows a preferred embodiment of the erfindungsge ⁇ MAESSEN furniture drive with removed housing cover.
  • Figure 1 shows an isometric front view of the closed ⁇ nen, not built electromotive furniture drive, designed as a linear transmission.
  • the furniture drive essentially comprises a two-part, closed in Figure 1 illustrated motor housing 2, in the rear end of a rear clevis 4 is received and which has a ge at the rear clevis 4 gen ⁇ opposite end a front clevis 6, via a lifting tube 8 is adjustable, which is longitudinally displaceably guided in a surrounding this guide tube 10 and is adjustable by means of the linear gear.
  • Two Bowden cables 12, 14 engage in the front end of the Motorge ⁇ housing 2 and operate an emergency release device for disengaging the linear gear for Notverstellen provided with the linear gear cabinet.
  • the rear clevis 4 is attached to a first cross tube of a bed frame
  • the longitudinally displaceable front clevis 6 is attached to a cross tube of a foot or head part of the bed so that it can be adjusted.
  • the rengetudetude ⁇ begetudeinterteil 26.2 formed transmission housing 26.
  • Electric motor 16 is accommodated in a rear engine housing rear part 2.1, which extends transversely to the longitudinal axis of the furniture drive extending along the lifting tube 8 and drives a worm 18 which drives a worm wheel 20 arranged transversely to the longitudinal axis of the worm 18.
  • the worm wheel 20 includes laterally from the actual Worm wheel laterally thereof a Schneckenradkeilwelle 21, on which the sliding sleeve 22 is longitudinally displaceable, but rotatably disposed.
  • the sliding sleeve 22 has a sliding sleeve shoulder 23 projecting radially outward from the outer cylindrical lateral surface.
  • the sliding sleeve 22 is seated with a rear shoulder of a hollow cylindrical lateral surface at a front shoulder of a projecting beyond an outer circumferential surface of the spindle holder 27 radial flange 27.1.
  • the substantially hollow-cylindrical spindle holder 27 is circumferentially enclosed on the outside by the Schneckenradkeilwelle 21, which is formed as Stut ⁇ zen laterally adjacent to the worm wheel 20 and on which axially displaceable sliding sleeve 22 sits.
  • the worm wheel 20 thus sits outside on the spindle holder 27, wherein at the front end of the actual worm wheel 20 is formed, from which the Schneckenradkeilwelle 21 extends rearwardly to a worm wheel stop of the spindle ⁇ holder 27, where in turn the sliding sleeve 22 on the outside on the rear end of the Schneckenradkeilwelle 21 axially slidably seated.
  • a front axial roller bearing 28 fixes the worm wheel 20 on the front side, which in turn is held on the front, by a front, designed as deep groove ball bearings ⁇ radial ball bearing 30, which together with the axial roller bearing 28 on a front end of the spindle holder 27 ⁇ th front bearing seat 27.3 with reducedsuit barnmes ⁇ ser sits and thus superimposed on this front radial ball bearing 30, the transmission in the transmission housing 26.
  • the spindle holder 27 At the rear end in the installed position of the spindle holder 27 is mounted on a likewise designed as a deep groove ball bearing radial bearing 32 in the gear housing 26, which sits with its inner ring on a nozzle-shaped, rear bearing seat 27.2 of the spindle holder 27 and the spindle 34 is screwed by means of a screw 36.
  • the spindle 34 runs a substantially hollow cylindrical spindle nut 38 whose adjustment is limited by a rear limit switch 40 and a front limit switch 42 in a known manner, the layers are adjusted as needed ⁇ bar.
  • the spindle nut 38 has a front Hubrohrstutzen on which the lifting tube 8 sits to form a paragraph.
  • a the Schneckenradkeilwelle 21 enclosing a sliding ⁇ sleeve spring 44 formed tensioning means extends Zvi ⁇ rule the internal shoulder of the worm wheel 20 and the front of the sliding sleeve shoulder 23 of the sliding sleeve 22 and thus keeps this in the rest position in the engaged drive position in which the sliding sleeve 22, the Schneckenradkeilwelle 21 rotatably connected with a complementary to the internal geometry of the sliding sleeve spindle holder ⁇ splined connecting, which is formed on the inside of the radial flange 27.1 complementary to the êtgeomet ⁇ theory of the sliding sleeve 22nd
  • FIG. 4 shows the furniture drive with the engine housing front part 2.2 removed and the transmission housing 26 in the engaged drive position.
  • Figure 5 shows the furniture drive enlarged and also in the engaged drive position, but with removed gear housing front part 26.1.
  • the disengagement for the freewheel is done by pulling one of the two Bowden cables 12, 14, the front ends can end, for example, both sides of a hospital bed in handles. Seilkauschen at the rear ends of the Bowden cables 12, 14 sit in a pull rocker 46, which is externally placed on the guide tube 10 via a clamp.
  • This pull-rocker 46 is rotatably mounted on a pin 49 which is formed at the front end of a pull rod 48 and thus extends transversely to the longitudinal direction of this drawbar 48.
  • the pull rod 48 is connected at the end to a fork 50.
  • This fork 50 rests with a front bearing side in a ⁇ construction position against the radially projecting from the outer lateral surface of the sliding sleeve 22 sliding sleeve shoulder 23, thus enclosing the outer surface of the sliding sleeve 22 in the installed position almost completely.
  • Axial projections 50.4, 50.5, 50.6, 50.7 are formed on the front ⁇ side of the fork arms 50.1, 50.2 of the fork 50 or formed.
  • the fork arms 50.1, 50.2 forming a semi-circular shaped in Wesent ⁇ union, to range over a Malawickenden angle of slightly more than 180 degrees arc having at the top in the installed position the end of a drawbar eye 50.3 for the train ⁇ rod 48th
  • the fork 50 is biased by a fork spring 52, which extends between the fork 50 and spring holder on the outside of the gear housing 26, that shifts in the figures to the right, so that the fork 50 is not in the rest position so applied to the sliding sleeve shoulder 23.
  • a guide pin 56 Opposite of the pull rod 48 extends coaxially to this pull rod 48, a guide pin 56 which sits in the installed position in a correspondingly formed mecanicneh- tion on the gear housing 26 and is guided axially displaceably in this.
  • the guide pin 56 forms one of the means for avoiding bending or Abwin ⁇ none of the fork 50 during actuation of the sliding sleeve 22nd
  • none of the fork 50 are formed in the axial projections 50.4, 50.5, 50.6, 50.7 integrally formed on the front of the fork 50.
  • the Ga ⁇ belarme 50.1, 50.2 are formed arcuate and further via a - in the front view of the fork 50 duri ⁇ Fende central transverse axis extend, which substantially by the area of the largest inside distance between the Fork arms 50.1, 50.2 extends and at their height radially on the outside of the fork arms 50.1, 50.2 radial projections 50.6, 50.7 are formed, the case when moving the Ga ⁇ bel 50 for improved engagement in the surrounding gearbox housing 26 and simplified guidance in this two-sided run-on slopes respectively.
  • the radial projections 50.8, 50.9 along the longitudinal axis of the fork arms 50.1, 50.2 between the inner radial projections 50.4, 50.5 and the outer radial projections 50.6, 50.7 are arranged to a particularly stable Ausgestal ⁇ tion and good leadership of the fork 50 in the To ensure transmission housing 26.
  • FIG. 15 shows a furniture drive according to the invention with the housing cover removed, in the disengaged emergency release position.
  • the worm wheel 58 on the laterally molded spline 60 axially slidably, but rotatably the sliding sleeve 62 is seated, which is disengaged via the attracted shift fork 64.
  • the object of the present invention is derived not only from the subject of the individual claims, son ⁇ countries from the combination of the individual claims with each other. All the materials - including the summary - disclosed details and characteristics, in particular the one shown in the drawings spatial From ⁇ formation are essential to the invention claimed, as far as they individually or in combination over the prior art are new.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

Pour simplifier la construction d'un entraînement de meuble par moteur électrique comportant une entraînement conçu comme un moteur électrique et entraînant par le biais d'une vis sans fin (18) un engrenage à vis sans fin (20) pouvant être fixé solidairement en rotation à un support de broche (27) par le biais d'un accouplement actionnable au moyen d'un élément d'actionnement, le support de broche (27) recevant solidairement en rotation une broche (34) sur laquelle court un écrou de broche (38) qui est relié à un élément d'actionnement destiné à être déplacé au moyen de l'entraînement de meuble, tel qu'une partie de tête ou de pied d'un lit ou une autre élément de meuble, et pour prévoir un entraînement de meubles particulièrement compact, il est proposé selon l'invention que l'accouplement comporte un manchon coulissant ou une douille coulissante (22) et que l'élément d'actionnement soit conçu de manière à n'effectuer qu'un mouvement de translation pour l'actionnement de la douille coulissante (22).
PCT/EP2018/080397 2017-11-08 2018-11-07 Entraînement de meuble par moteur électrique avec accouplment par griffes WO2019091997A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE202017005798.0 2017-11-08
DE202017005798 2017-11-08
DE202018105597.6U DE202018105597U1 (de) 2018-09-28 2018-09-28 Elektromotorischer Möbelantrieb mit Klauenkupplung
DE202018105597.6 2018-09-28

Publications (1)

Publication Number Publication Date
WO2019091997A1 true WO2019091997A1 (fr) 2019-05-16

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019103356U1 (de) * 2019-06-14 2020-09-15 Dewertokin Gmbh Entstörter Linearantrieb
WO2020249617A1 (fr) * 2019-06-14 2020-12-17 Dewertokin Gmbh Entraînement linéaire pourvu d'un embrayage
WO2021122426A1 (fr) * 2019-12-17 2021-06-24 Dewertokin Gmbh Entraînement linéaire comprenant un boîtier de dispositif de commande
CN114096762A (zh) * 2019-06-17 2022-02-25 德沃康有限责任公司 具有在导管与主轴螺母之间的位置对准机构的线性驱动器
EP4064530A4 (fr) * 2020-04-29 2023-05-24 Zhejiang Jiecang Linear Motion Technology Co., Ltd Actionneur linéaire à mécanisme lisse

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29603174U1 (de) * 1996-02-22 1996-04-11 Dewert Antriebs- und Systemtechnik GmbH & Co KG, 32278 Kirchlengern Möbelantrieb
US20040093969A1 (en) * 2000-10-03 2004-05-20 Nielsen Jens Jorgen Linear actuator
DE202006009957U1 (de) 2005-12-27 2006-11-23 Jaeger Industrial Co., Ltd., Sindian Schnellösbarer Linearbetätiger
DE102015012348A1 (de) * 2015-09-22 2017-03-23 Daimler Ag Schaltgabel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29603174U1 (de) * 1996-02-22 1996-04-11 Dewert Antriebs- und Systemtechnik GmbH & Co KG, 32278 Kirchlengern Möbelantrieb
US20040093969A1 (en) * 2000-10-03 2004-05-20 Nielsen Jens Jorgen Linear actuator
DE202006009957U1 (de) 2005-12-27 2006-11-23 Jaeger Industrial Co., Ltd., Sindian Schnellösbarer Linearbetätiger
DE102015012348A1 (de) * 2015-09-22 2017-03-23 Daimler Ag Schaltgabel

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019103356U1 (de) * 2019-06-14 2020-09-15 Dewertokin Gmbh Entstörter Linearantrieb
WO2020249617A1 (fr) * 2019-06-14 2020-12-17 Dewertokin Gmbh Entraînement linéaire pourvu d'un embrayage
WO2020249735A1 (fr) 2019-06-14 2020-12-17 Dewertokin Gmbh Entraînement linéaire antiparasité
EP3983693A1 (fr) * 2019-06-14 2022-04-20 DewertOkin KFT Entraînement linéaire pourvu d'un embrayage
US11994172B2 (en) 2019-06-14 2024-05-28 Dewertokin Kft Linear drive with clutch
CN114096762A (zh) * 2019-06-17 2022-02-25 德沃康有限责任公司 具有在导管与主轴螺母之间的位置对准机构的线性驱动器
WO2021122426A1 (fr) * 2019-12-17 2021-06-24 Dewertokin Gmbh Entraînement linéaire comprenant un boîtier de dispositif de commande
US11994190B2 (en) 2019-12-17 2024-05-28 Dewertokin Kft Linear drive with control housing
EP4064530A4 (fr) * 2020-04-29 2023-05-24 Zhejiang Jiecang Linear Motion Technology Co., Ltd Actionneur linéaire à mécanisme lisse
US12013016B2 (en) 2020-04-29 2024-06-18 Zhejiang Jiecang Linear Motion Technology Co., Ltd. Linear actuator

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