Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
  • A47B9/00—Tables with tops of variable height
  • A47B9/02—Tables with tops of variable height with balancing device, e.g. by springs, by weight
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
  • A47B27/00—Drawing desks or tables; Carriers for drawing-boards
  • A47B27/04—Adjustable drawing-board carriers with balancing means for the board
  • A47B27/06—Adjustable drawing-board carriers with balancing means for the board balancing by means of springs
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
  • A47B9/00—Tables with tops of variable height
  • A47B9/12—Tables with tops of variable height with flexible height-adjusting means, e.g. rope, chain
• • 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
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F1/00—Springs
  • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
  • F16F1/04—Wound springs
  • F16F1/06—Wound springs with turns lying in cylindrical surfaces
• • 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
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F1/00—Springs
  • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
  • F16F1/04—Wound springs
  • F16F1/08—Wound springs with turns lying in mainly conical surfaces, i.e. characterised by varying diameter
• • 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
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F2236/00—Mode of stressing of basic spring or damper elements or devices incorporating such elements
  • F16F2236/08—Torsion

Definitions

• the invention relates to a spring storage device for mounting between a base part and a relative to the base member movable member, with a coil spring arrangement for storing spring forces upon actuation of the movable member by torsion of at least one helical spring torsion winding portion of the fferenfederanssen and a piece of furniture and a Closure device equipped with such a spring storage device.
• the helical spring assembly includes a torsion spring which is torsionally activated upon actuation of the gate, i. of the movable member, absorbs or releases a spring force.
• the torsion spring on the spring shaft always gives so much force to the gate that this is free in any position.
• the windings of the torsion spring must have a sufficiently large diameter that the torsional forces can be absorbed. As torsion increases, the torsion spring tends to become undulated transverse to its longitudinal direction. This leads to friction between adjacent windings of the torsion spring. Furthermore, with man- Chen spring storage devices rotary shafts for storing spring forces on the torsion spring inserted through the torsion spring therethrough. When the torsion spring deforms and tensions during a torsional load, it rubs it on the rotating shaft. This leads to friction losses.
• a spring memory device lo of the type mentioned has a rod-like support means for supporting the coil spring assembly in the torsion, which engages in an interior of the coil spring assembly or engages through the interior, and that on the support means at least one Drehla- The device is rotatably mounted, via which the at least one torsional winding section is supported during the torsion.
• the support means extends e.g. from a longitudinal end of the coil spring assembly into its interior.
• a first longitudinal end of the coil spring assembly is non-rotatable in a storage of spring forces in the coil spring assembly by a projecting from the region of its second longitudinal end torsion takes the at least one torsional winding section on a torsional load.
• the rotary bearing device causes the at least one torsional winding section to be supported on the support device so that it rotates with little friction during the torsion.
• the at least one pivot bearing device is rotatable about the support means with or without play.
• the helical spring arrangement may, for example, contain a plurality of torsion springs or torsion winding sections, between each of which a pivot bearing device is arranged, which is rotatably supported on the support device.
• the support means is for example a fixed rod or a rotary shaft which is inserted through the coil spring assembly. In a torsional load of the coil spring assembly, the support means forms, so to speak, a guide for the pivot bearing devices. As a result, a wave-like deformation of the support spring arrangement is suppressed.
• a Torsionswicklungsabrough is arranged axially adjacent to a Torsionswicklungsabrough.
• two Torsionswicklungsab- sections between a single pivot bearing device of a coil spring assembly according to the invention can be arranged.
• the pivot bearing devices and Torsionswicklungsabête alternate in the longitudinal direction of the coil spring assembly.
• the at least one torsional winding section may extend over at least two axially spaced pivot bearing devices.
• the at least one torsional winding section extends, for example, between end regions of the helical spring arrangement, one of which is motion-coupled to the movable component and the other is fixed relative to the base part.
• the movable component is expediently height-adjustable relative to the base part.
• the spring storage device is used in this construction variant to balance the weight at a height adjustment of the component.
• the spring storage device according to the invention is particularly advantageous for furniture used.
• the spring accumulator device forms, for example, a spring-loaded fitting. Electric drives that are common, for example, see for height adjustable Schreibti- are not required.
• the spring storage device according to the invention absorbs forces during an adjustment of the movable component, for example a desk top, which it releases in the event of a subsequent adjustment of the component or the desk top upwards.
• the spring storage device is expediently arranged in the manner of a crossbeam between vertical supports of the furniture.
• the spring storage device can be arranged, for example, in the vicinity of the movable component, directly on the movable component or on the base part.
• the furniture according to the invention is preferably an office furniture, for example a
• Writing desk Particularly preferred is the range of children's furniture or children's furniture.
• a particularly expedient variant provides that in one or more vertical supports or feet of the furniture, a transmission is arranged, which couples the spring-loaded device with the movable member.
• the vertical supports are advantageously telescopic.
• an outer telescopic part is telescopically attached to an inner telescopic part, wherein a driver engages through the inner telescope part at a slot and connects the transmission with the outer telescopic part.
• the slot is advantageously narrow, that is smaller than 8 mm, so that it can not be penetrated by a hand or a finger. This avoids injuries.
• closure devices for closing openings, for example building openings.
• the spring storage device is used for example a weight balance for the movable member, which is for example a sectional door, a tilting door, a roller shutter or the like.
• the closure device may also be a closure device, for example a piece of furniture, for example a roll container with a roller shutter.
• the pivot bearing devices and the Torsionswicklungsabschnit- te can each be formed by separate units that are interconnected.
• the pivot storage devices may e.g. be formed by rotary sleeve members and / or ring bearings and the Torsionswicklungsabête by coil springs. There may be a plurality of coil springs and / or a plurality of pivot bearing devices.
• an at least partially integral construction of the helical spring arrangement which has at least one Torsionswicklungsabexcellent and at least one support winding portion which forms a pivot bearing device at least partially.
• a sleeve-like pivot bearing device connects two coil springs, of which at least one has a torsion winding section.
• a torsion coil spring according to the invention which in itself constitutes an independent invention, expediently has at least one support winding section and a torsion winding section, which adjoin one another in one piece and are arranged side by side in the longitudinal extension direction of the helical spring.
• the windings of the at least one torsion winding section have a larger diameter than the windings of the at least one support winding. lung portion.
• the torsion coil portion receives a larger torsional load in a torsion than the support coil portion.
• the support winding section on the other hand, which is not or only insignificantly loaded by the torsion, can then be rotationally supported on the support device.
• the helical spring has a waist in the area of the at least one support winding section and a larger diameter in the case of the torsion winding sections.
• the winding diameter of the torsion coil section is about twice as large as the winding diameter of the support winding section.
• the windings of the at least one torsional winding section advantageously have an axial distance from one another. This distance in the longitudinal axis of the fferenfe- deranssen corresponds to the design of a compression spring. In a torsional load, the windings of the at least one torsional winding section do not rub against each other due to the axial distance, at least in an initial range or in a normal load range of the torsional load.
• the windings of the at least one torsional winding section advantageously have different diameters.
• the diameters of the windings increase from a region near a pivot bearing device to a region remote therefrom. Up to a next pivot bearing device, the diameter of the Torsionswicklungsabitess can decrease accordingly again.
• the increase or decrease are advantageously linear, so that a conical or conical outer contour is formed. It is understood that also spherical, hyperbolic or other outer contours are possible. Also a stepped outer contour of the torsion Winding section is conceivable.
• the diameter of the windings may initially increase greatly away from the respective rotary bearing device, for example in a jump-like manner and then be constant or substantially constant in a middle section of the torsional winding section.
• the pivot bearing devices comprise support winding sections, it is advantageous if the winding diameters of the torsion winding sections merge into the winding diameters of the support winding sections so to speak harmoniously into one another.
• the windings have a smaller axial distance from one another than the windings of the at least one torsional winding section.
• the windings of the support winding section are suitably wound in the manner of a tension spring.
• the windings may already touch if the coil spring is not yet loaded by torsion. It is also conceivable that the helical spring is already under a torsion bias, in which the windings of the support winding section already touch. In this case, it is conceivable that the windings of the support winding section do not yet touch when the coil spring is fully relaxed.
• the diameter of the windings of the support winding section is expediently substantially constant in torsionsbelasteter and torsion-free or only by TorsionsvorSpannung loaded coil spring assembly. This is the case, for example, in the case of the aforementioned variant, in which the support windings are wound "in a block.”
• the cross section remains constant that the respective support winding section is freely rotatably mounted on the support means or with low friction.
• For rotation suitably contributes a Gleitelement-, which is arranged on an inner circumference of the at least one Stitzwicklungs- section. It is also possible to provide an inner circumference of a pivot bearing device or a support coil section with a lubricious coating.
• the sliding element has on its inside expediently ribs which slide on the rod-like support means.
• On an outer periphery of the sliding member is advantageously provided a helical projection which engages in adjacent windings of the support winding section.
• the sliding element can be screwed into the support winding section so to speak.
• a projection or a plurality of projections are arranged on at least one end face of the sliding element, which is, for example, annular or sleeve-like, which engage in adjacent windings of the respective support winding section. The Drehbegrenzungsvor- jumps prevent unintentional unscrewing of the sliding element.
• the sliding element is advantageously designed as a clamping ring or as a clamping sleeve, which, in the mounted state, clamps against an inner circumference of the supporting winding section.
• a gap is provided in the longitudinal direction of extension of the sliding elements or the helical spring arrangement.
• the sliding element is advantageous legally plastic, whereby, for example, a coated metal sliding element is expedient.
• the sliding element advantageously limits a narrowing of an inner cross section of the support winding section. This ensures at all times that the support winding section is rotatable on the support device with or without play.
• the rotary bearing device comprises at least one rotary sleeve element or ring bearing.
• the respective ring bearing is formed for example by a ball bearing or roller bearings.
• the rotary sleeve element or the ring bearing are advantageously mounted axially displaceable on the support means.
• the at least one torsion winding section is supported on the rotary sleeve element or the ring bearing.
• the torsion winding portion is formed either by an aforementioned waisted structure or by a conventional coil spring, that is, a coil spring whose windings in the longitudinal direction of the helical spring have the same diameter. While the torsion spring tends to assume a wave-like shape during a torsion. However, it then rotates on the rotary sleeve elements or ring bearings on the rod-like support means rotating. An axial play of the ring bearings or rotary sleeve elements counteract torsions of the torsion spring.
• the Torsionwicklungsabites has a radial distance to the rotary sleeve member or ring bearing, if it is not or only slightly torsionally loaded. Only when the Torsionswicklungsabêt has reached a predetermined torsion and / or braces like a wave, it is based on the or the ring bearings / rotary sleeve elements.
• at least one spacer element is arranged between at least two rotary sleeve elements or ring bearings.
• the spacer may be, for example, a pipe part through which the support means is inserted. It is particularly preferred if the spacer element is resilient and, for example, comprises a spring penetrated by the support device.
• the support device is advantageously formed by a rotatably mounted on a holding device rotary shaft.
• the rotary shaft is advantageously rotatably mounted in the region of its two longitudinal ends on a housing of the spring storage device. It is understood that a pivot bearing at other locations of the rotary shaft is conceivable.
• the helical spring arrangement is in the region of its first longitudinal transmission, e.g. fixed in rotation on the holding device.
• the holding device for non-rotatably holding the longitudinal end is advantageously formed by a housing of the spring storage device or is arranged in such a housing.
• the second longitudinal end is advantageously fixed against rotation on the rotary shaft.
• One or both longitudinal ends of the rotary shaft advantageously form a force tap for a force coupling with the movable component.
• forces can be stored in the coil spring assembly via the rotary shaft or tapped again on the rotary shaft.
• the rotary shaft of the housing of the spring storage device penetrates with one or both longitudinal ends.
• the rotary shaft is arranged in the interior of the housing and, for example, a Kraftkopplungselernent pushed through the housing and is rotatably connected to the rotary shaft.
• a helical spring arrangement according to the invention can also have, for example, two helical springs wound in opposite directions, which are coupled together at their two second longitudinal ends by a coupling element.
• the coupling element is, for example, a rotatably mounted on the support means rotary sleeve element.
• the coupling element expediently forms a force tap, can be introduced via the torsion in the coil spring assembly and stored spring forces of the coil spring assembly can be tapped.
• a transmission in particular a cable transmission or a chain transmission is provided, which couples the movable member with the spring storage device and / or the spring storage device.
• the transmission may be a reduction gear or a transmission gear. It is particularly expedient if the transmission converts a linear movement of the movable component, for example a height adjustment movement, into a rotary movement for the rotary actuation of the second longitudinal end of the helical spring arrangement and vice versa.
• an adjusting device for setting different TorsionsvorSpannungen the coil spring assembly having a rotatable and fixable in at least two rotational positions rotary support on which the coil spring assembly is fixed.
• the helical spring arrangement can be prestressed, for example in order to allow an adaptation of the spring-loaded device to the respective weight of the movable component.
• the adjusting device expediently has a self-locking gearbox for actuating the rotary holder, for example example, a worm gear, and / or a locking device for non-rotatable locking of the rotary holder.
• the adjusting device also has a display device for displaying the respective Torsionsvor- tension of the coil spring assembly.
• the display device includes, for example, a motion-coupled with the rotary holder or the coil spring count wheel.
• the counting wheel expediently engages in several rotational positions. This allows a simple coupling via the driver, which is arranged on the rotary holder or the coil spring assembly and engages in a suitable projection on the counter wheel and this entrains.
• the counting wheel and the rotary holder or the helical spring arrangement are advantageously coupled in the manner of a reduction gear, so that rotations of the rotary holder cause fewer revolutions of the counting wheel.
• a transmission gear is conceivable.
• the rotary support of the adjustment is rotatably mounted on the rod-like support means. It is understood that the rotary holder can also be mounted on the housing or on the holding device of the spring storage device.
• the spring storage device has a bearing arrangement for a movable mounting on the base part or the movable component.
• the bearing assembly allows, so to speak, a floating bearing to prevent tension of the spring-loaded device on the device to which it is attached.
• the bearing assembly suitably allows rotational movements about a rotation axis parallel to the longitudinal axis of the coil spring assembly. Axial movements are also parallel to the longitudinal axis of the coil spring arrangements advantageously possible by the bearing arrangement.
• the bearing arrangement can be arranged, for example, on the holding device, for example on the housing, of the spring storage device.
• bearing journals or bearing mounts are present, which engage in corresponding bearing mounts or bearing journals on the base part or the movable component (depending on where the spring-loaded device is mounted).
• a rotational movement caused by storage of spring forces in the spring accumulator device or by delivery of spring forces is enabled by the "floating" bearing assembly but is conveniently limited by a force take-off element or the second longitudinal end of the coil spring assembly.
• the rod-like support means or a power take-off part connected thereto limits this rotational movement.
• An axial movement is limited for example by vertical supports or feet of the device on which the spring storage device is arranged.
• a releasable locking device for fixing the second longitudinal end of the coil spring arrangement.
• An operator can expediently actuate the locking device by an actuating device which is arranged, for example, in the region of the movable component.
• the actuator includes, for example, a Bowden cable.
• FIG. 1 shows a perspective view of a piece of furniture according to the invention
• FIG. 2 shows a partially sectioned side view of the piece of furniture according to FIG. 1 along a line A - A in FIG. 1, FIG.
• FIG. 2 a shows an enlarged detail from FIG. 2,
• FIG. 3 shows a perspective view of a first spring storage device of the piece of furniture of FIG. 1,
• FIG. 4 shows the spring storage device according to FIG. 3 with a transparent drawn housing
• FIG. 5 is a cross-sectional view of the spring accumulator device of FIG. 3 along a line B-B in FIG.
• FIG. 6 shows a cross-sectional view of the spring storage device according to FIG. 5 along a section line C-C in FIG. 5,
• FIG. 7 shows a cross-sectional view of the spring accumulator device according to FIG. 5 along a section line D - D in FIG. 5, FIG.
• FIG. 8 shows a cross-sectional view of the spring storage device according to FIG. 5 along a section line EE in FIG. 5
• FIG. 9 is a perspective view of a sliding element for supporting parts of a helical spring arrangement of the spring-loaded device according to FIG. 4;
• Figure 10 is a side view of the sliding element of Figure 9.
• Figure 11 is a in at least one vertical support of the furniture according to Figure 1, 2 arranged, shown in perspective gear.
• FIG. 12 shows a perspective, partially cutaway view of a second spring storage device for the furniture of FIG. 1 with a transparent drawn housing and a
• FIG. 12a shows an enlarged detail V1 of FIG. 12
• FIG. 13 shows a partial representation of the spring-type storage device according to FIG. 12, but with a non-cut helical spring
• FIG. 14 is a cross-sectional view of the spring accumulator device of FIG. 12, approximately corresponding to a line B-B in FIG. 12.
• a piece of furniture 10, for example an office furniture, has a worktop 11, which is height-adjustable relative to a frame 12.
• the work surface 11 is a component 14 that is movable relative to the frame 12, which forms a base part 13.
• a vertical movement of the work surface 11 is supported by a spring storage device 15 according to the invention.
• the spring accumulator device 15 balances the weight and is expediently balanced in such a way that it worktop 11 holds in different height positions without intervention or essentially without intervention by an operator.
• a lower position of the work surface 11 5 is shown in solid lines and in dashed lines.
• the spring storage device 15 forms e.g.
• the spring storage device 15 is arranged between two vertical supports or columns 16 of the frame 12 in the manner of a cross-beam.
• the lo columns 16 stand on feet 17.
• the feet 17 project forward so that C-legs are formed. T-feet would also be possible.
• the columns 16 are longitudinally adjustable, advantageously e.g. telescoping to allow the height adjustment of the worktop 11.
• An upper column part 19 is guided on a lower column part 18 of the columns 16.
• a body 20 is expediently attached, of which, for example, side cheeks 21 are shown.
• the worktop 11 is tilted with respect to the body 20, wherein tilting means are not shown.
• the body 20 may comprise further elements, for example a drawer, not shown, or other pull-out elements.
• a total of the body 20 with the worktop 11 arranged thereon is height-adjustable.
• the spring-storage device 15 and the movable component 14 are coupled in motion via a gear 22.
• the pillars 16 herein are for example made of metal, e.g. Sheet metal and / or plastic.
• the columns 16 are hollow inside. This creates a space in which each case a gear 22 can be arranged
• the transmission 22 is arranged in the right-hand column 16 in FIG. 1 and thus in one protected, not accessible to an operator interior 23.
• the transmission 22 translates a linear movement, which takes place with a height adjustment of the component 14, into a rotational movement for storing spring forces in the spring accumulator device 15.
• the spring accumulator device 15 transmits rotational forces to the transmission 22, which reduces these rotational forces an upwardly directed, the component 14 supporting linear force translated.
• One or more dogs 24 fixed to the upper column part 19 pass through a vertical slot 25 on the lower column part 18 and are connected to a chain 26.
• the drivers are 24 bolts, which are pushed through bores on the upper pillar part 19 and are screwed into a middle part 27 of the chain 26.
• the driver part 27 further forms a chain lock for the chain 26th
• the chain 26 runs around a lower and an upper pinion 28, 29, which are rotatably mounted on vertical support members 30.
• the vertical support members 30 are, for example, plate-like, e.g. Sheet metal parts which are interconnected by cross connector 31.
• the pinions 28, 29 are sandwiched between the support members 30. Conveniently, at least one of the two pinions 28, 29 for adjusting the tension of the chain 26 in the vertical direction adjustable.
• support rollers 33 are further arranged, on which the inner side of the upper pillar part 18 rolls.
• the support rollers 33 each support mutually opposite narrow sides of the upper column part 19, which for example has a substantially rectangular interior.
• the support rollers 33 prevent tilting th of the upper pillar part 19, which is loaded not only vertically, but also horizontally, for example by the forwardly projecting body 20. It is understood that in a uniform or symmetrical loading of the column parts 19, the support rollers 33 are not essential.
• a transmission in the manner of the transmission 22 and / or a support roller assembly the support rollers in the manner of the support rollers 33, arranged.
• the support rollers 33 for example, sliders or the like could be provided.
• the slot 25 is expediently so narrow, in particular smaller than 8 mm, that it can not be penetrated by an operator, in particular a child. This avoids injuries.
• the furniture 10 can therefore also be used as a youth or children's furniture.
• a transmission 22 can be arranged only in one of the two columns 16. In the following example, it is assumed that in each case a transmission 22 is arranged in both columns 16.
• the spring storage device 15 is then force coupled to both gears 22.
• bolts 34 are inserted into receptacles 35 on the lower pinions 28 and receptacles 36 of the spring-loaded device 15.
• the force taps forming receptacles 36 are arranged on the end faces of a rotary shaft 37 of the spring storage device 15.
• the rotary shaft 37 extends in a longitudinal extension direction 38 of the spring storage device 15 and is rotatably mounted on a housing 39 thereof.
• Longitudinal ends 40, 41 of Rotary shaft 37 are rotatably mounted on bearings 42, 43 of the housing 39.
• the bearings 42, 43 are arranged in covers 44, 45 which close a central part 46 of the housing 39 in each case on the front side.
• the middle part 46 is, for example, a continuous casting made of metal casting.
• the covers 44, 45 are screwed to the central part 46, for example with bolts 47.
• the support shaft 48 penetrates an inner space 89 of the coil spring 49.
• the screw spring 49 is fixed against rotation on the one hand on the housing 39 and on the other hand on the rotary shaft 37.
• a first longitudinal end 51 of the coil spring 49 is rotatably connected to a relative to the housing 39 rotatably fixable holding means 53 and in the region of its second longitudinal end 52 with the rotary shaft 37.
• a coil spring tends in principle to a wave-like deformation, that is to a deformation transverse to the longitudinal direction 38 and transverse to the rod-like support means 48.
• the support means 48 limits the wave-like deformation, in the present case, the design of the coil spring 49, in turn represents an independent invention, which counteracts wave-shaped deformation and in particular ensures a uniform and rotatable support on the support means 48.
• Torsion winding sections 55 of the helical spring arrangement 50 serve to accommodate torsion or to deliver stored spring forces.
• the pivot bearing devices 54 contain support winding sections 56 of the helical spring 49. Windings 57 of the torsion winding sections 55, in contrast to windings 58 of the support winding sections 56, have a larger diameter.
• the windings 58 of the support winding sections 56 are also advantageously wound on block, that is, they touch each other when the coil spring 49 is not torsionally or torsionally loaded only in the range of their usual bias, they already has when the movable member 14 is in - i5 ner extended, in Figure 1 upper position, is.
• the windings 57 are axially spaced apart in the longitudinal extension direction 38.
• the inner cross section of the support winding sections 56 does not decrease or only in the absorption of torsional forces
• the support winding portions 56 are substantially freely rotatable on the support means 48 and the rotary shaft 37.
• the coil spring 49 is guided by the support means 48, but can rotate substantially freely, so that it is not undesirable friction
• the sliding properties of the support winding portions 56 are improved by sliding members 59 disposed on a respective inner periphery 60 of a support winding portion 56.
• the sliding elements 59 are, for example, plastic sleeves which are inserted into the support winding sections 56.
• the sliding elements 59 may, for example, be glued to the support winding sections 56.
• the sliding elements 59 are designed as clamping rings or clamping sleeves and have a longitudinally extending slot 61 so that they can be compressed and clamp in the mounted state against an inner periphery of the respective support winding section 56.
• the projection 62 is a helical projection on the outer circumference 64 of a sliding element which engages in the mounted state between adjacent windings 58 of a support winding portion 56.
• the sliding elements 59 can be screwed into the support winding sections 56 or, in the case of torsional actuation of the helical spring 49, also unintentionally unscrewed.
• ribs 65 Arranged on an inner circumference of the sliding element 59 are ribs 65 extending in the longitudinal direction 38, which improve the sliding properties of the sliding element 59 and also facilitate compression for the function as a clamping sleeve.
• the diameter of the windings 57 of the Torsionswicklungsab- sections 55 increases from one pivot bearing device 54 to the next initially, increases to a maximum and then decreases linearly again, so that a conical or waisted outer contour of the coil spring 49 is formed.
• the respective longitudinal ends 51, 52 are expediently designed as support winding sections 56 or pivot bearing devices 54, so that a simple force tap or a simple force coupling with the holding device 53 on the one hand and in the present case with the rotary shaft 37 on the other hand is possible.
• the first longitudinal end 51 of the coil spring 49 is rotatably fixed to the holding device 53 with respect to the housing 39.
• the second longitudinal end 52 is fixed against rotation on a holding device 66 of a locking device 67.
• Holding device 66 is rotatably connected to the rotary shaft 37, for example, shrunk onto this.
• the holding device 53 is rotatable relative to the housing 39 and rotatably fixed.
• the holding device 53 forms a rotary holder 68 of an adjusting device 70 for setting different TorsionsvorSpannungen the coil spring 49.
• the rotary shaft 37 penetrates the rotary support 68 and with respect to this - unlike the holding device 66 - rotatable.
• the rotary holder 68 is rotatably mounted with bearings 69 on the rotary shaft 37.
• the holding devices 53, 66 have end-side grooves 71, 72 for receiving the longitudinal ends 51, 52.
• the longitudinal ends 51, 52 are each secured by at least one bolt 73.
• the holes 73 penetrate the grooves 71, 72 radially outwardly bounding peripheral walls 74, 75 and expediently penetrate in each case between two adjacent windings of the helical spring 59.
• the groove 71 is bounded on the outside by the peripheral wall 74 and on the inside by an inner wall 76.
• the groove 72 is bounded by the peripheral wall 75 and by the rotary shaft 37, which penetrates the holding device 66.
• Flange-like projections 77, 78 on an outer periphery 79 of the holding device 66 each have at least one recess 80, 81, in the latch 82, 83 of the locking device 67 and a transport lock 84, with the coil spring assembly 50 in torsionsvorgespannten state for a
• the latches 82, 83 engage from radially outward into the recesses 80, 81, which in the present case are substantially uniformly distributed over the entire outer circumference of the projections 77, 78, in order to secure the holding device 66 in a rotationally fixed manner in each case.
• the latch 83 is e.g. formed by a bolt which is screwed into a bore 85 on a side wall of the housing 39 and the lid 45.
• the bolt 83 is not in the unlocked state of the transport lock 84 in front of an outer periphery of the housing 39 before.
• a fastening part 86 for attaching a Bowden cable 87 to an actuating device 88 for actuating the locking device 67.
• the Bowden cable 87 runs from the spring memory device 15 to the movable component 14, namely, for example, to the upper side or to a side edge the worktop 11, where it is easily operated by an operator.
• two pinion-like projections 77, 78 are present. It is possible that latches of a locking device and a transport securing engage in the same recesses of a rotatable holding device for a coil spring assembly. Furthermore, it is conceivable that projections protrude in front of a rotatable holding device, which engage in recesses on locking elements for non-rotatable securing.
• the actuating device 88 expediently contains a spring arrangement, for example a spring 107 on the fastening part 86 and / or on the Bowden cable 87, which automatically actuates the latch 82 into a latching locking position securing the retaining device 66.
• the adjusting device 70 has a gear 90 for actuating the rotary holder 68.
• the gear 90 is expediently a self-locking gear, such as a worm gear.
• a worm shaft 91 meshes with a serration 92 on the outer circumference 93 of the rotary mount 68 or the holding device 53.
• the worm shaft 91 extends transversely to the longitudinal extension direction 38.
• the worm shaft 91 is rotatably mounted on the cover 45.
• an actuating device 104 for the transmission 90 is arranged, for example a hexagon socket.
• the worm shaft 91 is captively secured to the housing 39 by a locking ring 94 screwed into the cover 45.
• a display device 95 of the adjusting device 70 is used to display a respective TorsionsvorSpannung the coil spring 49.
• at least one driver 96 is disposed on the outer circumference 93 of the rotary support 68, for example, projecting radially from the rotary support 68.
• the driver 96 is arranged on a flange projection 97 between the receiving groove 71 or the receiving section for the helical spring 49 and the pinion toothing 92.
• the driver 96 actuates a counter wheel 98 of the display device 95 by engaging on the outside circumference of the counting wheel 98 distributed recesses 99.
• the recesses 30 are formed, for example, between pin-like protrusions 106 projecting from an end face of the counting wheel 98.
• the counting wheel 98 is rotatably mounted on the housing 39.
• the counting wheel 98 has a detent, that is, with each rotational movement by the driver 96 it engages a rotational position on.
• On an outer periphery of the counting wheel 98 are advantageously marks, such as numbers or symbols, available, which indicate the TorsionsvorSpannung the coil spring 49. The markings are visible for example by a window 100 at the top of the lid 45.
• the counting wheel 98 and the flange projection 97 with the driver 96 form a reduction gear, in which, for example, per revolution of the rotary holder 68, the counting wheel 98 is further actuated by one locking position.
• a floating bearing is provided by means of a bearing assembly 101.
• the bearing arrangement 101 permits rotational movements about a rotation axis 105 parallel to the longitudinal axis or longitudinal extension direction 38 and furthermore axial movements parallel to the longitudinal axis 38.
• At least one end face 103 of the housing 39 is spaced from the columns 16 for the axial movements.
• Bearing pins 102 of the bearing assembly 101 project in front of the end faces 103.
• the bearing pins 102 engage in not visible in the drawing bearing recesses on the columns 16 a.
• the bearing pins 102 are spaced apart from the longitudinal ends 40, 41, so that the housing 39 is rotatable about the bearing bolts 102 by a predetermined amount and axially movable in the longitudinal extension direction 38 or longitudinal direction of the bearing bolts 102.
• the spring accumulator device 15 can thus move in a floating manner, which avoids tension.
• the spring storage device 115 has partly similar components as the spring storage device 15, so that the same reference numerals are used in this respect and the components are not described in detail. Similar components are provided, as far as possible, with reference numbers larger by 100, as in the case of the spring-type storage device 15.
• the helical spring 149 In contrast to the helical spring 49, the helical spring 149 is not waisted, but has essentially the same winding diameter over its entire longitudinal extension direction.
• the helical spring 149 is rotationally fixed at its longitudinal ends 151, 152 to a holding device 166 and a rotary support 168, e.g. on projections 186 to accommodate torsional forces can.
• the components 166, 168 are not waisted, but has essentially the same winding diameter over its entire longitudinal extension direction.
• the helical spring 149 is rotationally fixed at its longitudinal ends 151, 152 to a holding device 166 and a rotary support 168, e.g. on projections 186 to accommodate torsional forces can.
• Coil spring 149 has e.g. a substantially continuous torsional winding section.
• the pivot bearing assembly 154 includes ring bearings 180, e.g. Ring ball bearing 182, on which the coil spring 149 in the Torsionsbelas-
• the ring bearings 180 are expediently arranged axially displaceably on the support device 48 at axial distances 181.
• the inner diameters of inner bearing rings 187 of the ring bearings 180 are, for example, larger than an outer diameter of the support means 48.
• the axial clearance serves for a suitable reduction of tension when the coil spring 149 is supported on the ring bearings 180.
• the axial play of the ring bearings 180 on the support means 48 also allows easy mounting of the ring bearings 180. It is understood that the pivot bearing devices 180 could also be fixedly mounted on the support means 48, for example glued or shrunk.
• spacer elements 183 are arranged, which define the axial distances 181 substantially, but advantageously allow axial play of the pivot bearing devices 154.
• the spacers 183 are e.g. Springs 184.
• the springs 184 are supported on the inner bearing rings 187 of the ring bearings 180.
• the support means 48 is pushed through the springs 184.
• the coil spring 149 In the non-twisted state, the coil spring 149 is spaced from the annular bearings 180 radially by a distance 185. An inner circumference of the coil spring 149 is larger than an outer circumference of outer bearing rings 188 of the ring bearings 180. Only when the coil spring is torsionally loaded, e.g. at a bias voltage or when storing torsional forces, an inner circumference of the coil spring 159 is wholly or partially at an outer periphery of the ring bearing 180 at. The ball bearings 182, however, allow the coil spring 149 to rotate in a friction-poor manner on the support device 48 even in the twisted state.

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• 2006
  • 2006-03-31 DE DE102006016237.4A patent/DE102006016237B4/de active Active
• 2007
  • 2007-02-26 EP EP07722931A patent/EP2001325A1/de not_active Withdrawn
  • 2007-02-26 JP JP2009501881A patent/JP2009531095A/ja active Pending
  • 2007-02-26 KR KR1020087021492A patent/KR20080114710A/ko not_active Application Discontinuation
  • 2007-02-26 CN CN200780012477XA patent/CN101415351B/zh active Active
  • 2007-02-26 WO PCT/EP2007/001619 patent/WO2007115605A1/de active Application Filing
  • 2007-02-26 RU RU2008143235/12A patent/RU2412635C2/ru active

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