KR20080114710A - Spring energy store apparatus, and furniture and closure apparatus - Google Patents

Abstract

The invention relates to a spring energy store apparatus (15) to be fitted between a base part (13) and a component (14) which can move relative to the base part (13), comprising a helical spring arrangement (50) for storing spring forces when the moving component (14) is operated by torsion of at least one helical spring-like torsion winding section (55) of the helical spring arrangement (50). The spring energy store apparatus has, for supporting the helical spring arrangement (50) in the event of torsion, a rod-like supporting device (48) which engages into an interior space (89) in the helical spring arrangement (50) or passes through the interior space. At least one rotary bearing device is rotatably mounted on the supporting device (48), and the at least one torsion winding section (55) is supported by means of said rotary bearing device in the event of torsion. ® KIPO & WIPO 2009

Description

SPRING ENERGY STORE APPARATUS, AND FURNITURE AND CLOSURE APPARATUS}

The present invention relates to a spring energy storage device, wherein the spring energy storage device is installed between a base part and a part that is relatively moveable relative to the base part, wherein the spring energy storage device has a movable component spiraled. And a spiral spring arrangement for storing the spring force when actuated by the torsion of at least one torsion winding section in the form of a spiral spring of the spring arrangement. The invention also relates to a furniture equipped with the spring energy storage device and a closing device equipped with the spring energy storage device.

Such spring energy storage linings are for example mounted for weight compensation in sectional doors. The helical spring arrangement includes a torsion spring, which torsional spring absorbs or releases the spring force by the torsion during operation of the door, ie the movable part. In an ideal state, the torsional spring always provides a lot of force to the door through the spring shaft such that the door is freely positioned in each position.

The winding of the torsion spring should have a diameter large enough so that the torsional force can be absorbed. As the torsion increases, the torsion spring tends to be tightened in a wave across its longitudinal direction of extension. This causes friction between adjacent windings of the torsion spring. In addition, in many spring energy storage devices, a rotating shaft for storing the spring force in the torsion spring is fitted through the torsion spring. If the torsion spring deforms and tightens in a wavy manner when subjected to a torsional load, the torsion spring rubs on the rotating shaft. This leads to frictional losses.

It is an object of the present invention to provide a spring energy storage device that operates smoothly and a device equipped with the spring energy storage device.

To achieve this object, a spring energy storage device of the type described above has a rod-shaped support device for supporting a helical spring arrangement when torsion is applied, said support device being engaged in an inner space of the helical spring arrangement. At least one rotary bearing device is rotatably mounted on the support device, the at least one torsion winding section being supported by the rotation bearing device when the torsion is applied. .

The support device extends, for example, from the longitudinal end of the helical spring arrangement into the inner space of the helical spring arrangement. For example, when the first longitudinal end of the helical spring arrangement is fixed rotatably and stores the spring force into the helical spring arrangement by torsion starting from the region of the second longitudinal end of the helical spring arrangement. The at least one torsion winding section absorbs torsional loads. The rotating bearing device allows the at least one torsional winding section to rotate with little friction and be supported by the support device when torsion is applied. The at least one rotating bearing device can rotate around the support device with or without play.

The helical spring arrangement may comprise, for example, several torsional springs or torsional winding sections, between which one rotational bearing device is arranged, each of which is rotatably mounted on the support device. Is supported. The support device is for example a stationary rod or a rotating shaft, which is fitted through the helical spring arrangement. When the helical spring arrangement is subjected to torsional load, the support device is a so-called guide for the rotary bearing device. This prevents the helical spring arrangement from deforming in a wavy manner.

One rotary bearing device each is arranged next to one torsion winding section, for example in the axial direction. Of course, for example two torsion winding sections may be arranged between one unique rotating bearing arrangement of the helical spring arrangement according to the invention. It is advantageous for the rotating bearing device and the torsion winding section to alternate with each other in the longitudinally extending direction of the helical spring arrangement. In addition, at least one torsional winding section may extend beyond at least two rotationally bearing devices axially spaced.

The at least one torsion winding section extends, for example, between end regions of the helical spring arrangement, one of which end regions is coupled with the movable component in relation to the movement, and the other end region is the base It is fixed in relation to wealth.

It is advantageous that the movable part can be adjusted in height relative to the base part. In this structural variant, the spring energy storage device is used for weight compensation in the height adjustment of the movable part.

The spring energy storage device according to the invention can be used particularly preferably in furniture. The spring energy storage device is for example a spring energy storage lining. For example, there is no need for an electric drive typically found on a height adjustable desk. The spring energy storage device according to the invention absorbs a force when a mobile component, such as a desk plate, is down regulated, and the spring energy storage device releases this force when the mobile component or desk plate is up regulated again. The spring energy storage device is advantageously arranged in the form of a transverse bar between the vertical struts of the furniture. The spring energy storage device may be arranged, for example, in the vicinity of the movable part, in direct contact with the movable part, or in the base part. The furniture according to the invention is preferably office furniture, such as a desk. Particularly preferred are youth furniture or children's furniture.

According to a particularly advantageous variant, the transmission is arranged in one or several struts or feet of the furniture, which couple the coupling to the spring energy storage device and the movable part. The vertical struts can preferably be nested. For example, an external telescope part is superimposed on an internal fitting, wherein a drive body penetrates the internal fitting in a slot, and connects the transmission to the external fitting. do. The slot is more preferably narrow, ie smaller than 8 mm and cannot be penetrated by the hand or finger. Therefore, there is no injury.

Another application area of the invention is a closure device for closing an opening, in particular a building opening. The spring energy storage device is used for weight compensation for movable parts such as sectional doors, tilting doors, roller shutters or the like. The closure device may be a closure device of a furniture, for example a closure device of a mobile storage container with a shutter.

The rotating bearing device and the torsion winding section may each be formed as separate units, which units are connected to each other. The rotary bearing device may for example be formed of a rotary sleeve element and / or a ring bearing, and the torsion winding section may be formed of a coil spring. Several coil springs and / or several rotary bearing devices may be mounted.

Particular preference is given to at least partly integral structure of the helical spring arrangement, having at least one torsion winding section and at least one support winding section, wherein the rotary bearing device is formed at least in part from the support winding section.

The variants described above can of course be combined with one another, for example a sleeve-shaped rotary bearing device connects two coil springs, at least one of which has a torsion winding section.

The torsion coil spring according to the present invention, which is itself an independent invention, It is advantageous to have at least one support winding section and at least one torsion winding section, wherein the support winding section and the torsion winding section are integrally connected to each other and arranged side by side in the longitudinal extension direction of the coil spring. The diameter of the winding of the at least one torsion winding section is larger than the diameter of the winding of the at least one support winding section. As a result, the torsion winding section absorbs a greater torsional load than the support winding section when torsion is applied. In contrast, the support winding section, which is not torsionally loaded or only slightly loaded, can rotate and be supported on the support device. The coil spring has a waist in the region of the at least one support winding section and a so-called waisted structure with a larger diameter results in the torsion winding section. For example, the winding diameter of the torsion winding section is approximately twice the winding diameter of the support winding section.

More preferably, the windings of the at least one torsion winding section are mutually spaced in the axial direction. This spacing in the longitudinal axis of the helical spring arrangement corresponds to the structure of the compression spring. The windings of the at least one torsion winding section when subjected to a torsional load do not rub against each other in at least the starting region of the torsional load or in the region of normal load due to the axial spacing.

The windings of the at least one torsion winding section more preferably have different diameters. For example, the diameter of the windings increases from the area in contact with one rotating bearing device towards the area away from the area. Thereafter, the winding diameter of the torsion winding section is preferably reduced until the next rotating bearing device. The increase or decrease is more preferably linear, thus forming an outer contour in the form of a cone or cone. Of course, ball-shaped, hyperbolic or other external contours are possible. A stepped outer contour of the torsion winding section is also possible. For example, the diameter of the winding may first increase dramatically away from each rotating bearing device, and then may be constant or essentially constant in the central section of the torsion winding section. In the integral structure of the helical spring arrangement in which the rotating bearing device comprises a supporting winding section, it is preferable if the winding diameter of the torsion winding section is merged so-called harmoniously with the winding diameter of the supporting winding section.

Preferably, the axial mutual spacing of the windings of the at least one support winding section is less than the axial mutual spacing of the windings of the at least one torsion winding section. The windings of the supporting winding section are advantageously wound in the form of a tension spring. The windings already touch each other when the coil spring is not yet subjected to torsional load. It is also possible that the coil spring is already under an initial torsional stress, at which time the windings of the supporting winding section already contact each other. In this case, the windings of the support winding section may not yet touch each other if the coil spring is fully relaxed.

The diameter of the winding of the supporting winding section is advantageously essentially constant in torsionally loaded helical spring arrangements or in torsional helical spring arrangements or only in helical spring arrangements loaded by torsional initial stresses. This corresponds, for example, to the variant in which the support windings are 'compressed into a mass'. The cross section remains constant at least at normal torsional loads resulting from the use of the spring energy storage device, so that the support winding section is freely installed on the support device or rotatably mounted with less friction.

It is advantageous for the sliding element to assist in the possibility of rotation, which sliding element is arranged in the inner circumference of the at least one support winding section. It is also possible to provide a slidable coating in the inner circumference of the rotating bearing device or the support winding section.

The sliding element advantageously has a rib on its inner surface, which rib slides on the rod-shaped support device. More preferably, there is a helical protrusion on the outer circumference of the sliding element, the protrusion engaging between adjacent windings of the support winding section. The sliding element can be so-called screwed into the support winding section. More preferably, one or several projections are arranged in front of at least one of the sliding elements, for example in the form of a ring or sleeve, which are engaged between adjacent windings of the supporting winding section. Rotationally restricting protrusions prevent the sliding element from being inadvertently released from screwing.

It is also possible to glue the sliding element into the support winding section.

The sliding element is more preferably formed as a clamping ring or clamping sleeve, which clamps against the inner circumference of the support winding section in the assembled state. For example, a gap is provided in the longitudinally extending direction of the sliding element or the helical spring arrangement. The sliding element is more preferably made of plastic, for example a coated metal sliding element is also advantageous.

More preferably, the sliding element limits the narrowing of the inner cross section of the support winding section. This ensures at any time that the support winding section can rotate with or without play on the support device.

It is also advantageous if the rotary bearing device comprises at least one rotary sleeve element or ring bearing. The ring bearing is formed, for example, as a ball bearing or a roller bearing. More preferably, the rotating sleeve element or the ring bearing is installed to be axially displaced on the support device. The at least one torsion winding section is supported on the rotating sleeve element or the ring bearing. For example, it is possible for the torsion winding section to be formed of the above-described waist-shaped structure or to form a conventional coil spring, ie a coil spring having the same diameter in the longitudinal extension direction of the coil spring. Coil springs tend to deform wavyly when torsion is applied. However, the coil spring is rotated and supported on the rod-shaped support device by the rotating sleeve element or the ring bearing. The axial play of the ring bearing or the rotating sleeve element prevents the tightening of the torsion spring.

When the torsion winding section is under no torsional load or only slightly torsional load, it is advantageous for the torsion winding section to have a radial distance to the rotating sleeve element or the ring bearing. The torsion winding section is supported on the ring bearing / rotating sleeve element only when the torsion winding section achieves a certain torsion and / or is tightened in a wave shape.

It is advantageous for at least one spacer element to be arranged between at least two said rotating sleeve elements or said ring bearings. The spacer element may, for example, be a tubular part, through which the support device is fitted. It is particularly preferred if the spacer element is elastic and comprises, for example, a spring pierced by the support device.

The support device is more preferably formed of a rotating shaft rotatably mounted to a holding device. More preferably, the regions of the two longitudinal ends of the rotating shaft are rotatably installed in the housing of the spring energy storage device. Of course, there may be a rotary bearing in other positions of the rotary shaft.

The region of the first longitudinal end of the helical spring arrangement is for example rotatably fixed to the holding device. The holding device for holding the longitudinal end in a rotatable manner is more preferably formed of or arranged in a housing of a spring energy storage device.

The second longitudinal end of the helical spring arrangement is more preferably rotatably fixed to the rotating shaft. More preferably, one or two longitudinal ends of the rotating shaft form a force drawer for force coupling with the movable part. Therefore, the force can be stored by or withdrawn from the rotating shaft into the helical spring arrangement. More preferably, one or two longitudinal ends of the rotating shaft pass through the housing of the spring energy storage device. It is also possible for the rotary shaft to be arranged in the interior space of the housing, for example a force coupling element fitted through the housing and rotatably connected to the rotary shaft.

The helical spring arrangement according to the invention may, for example, have two coil springs wound in opposite directions, the two second longitudinal ends of which are coupled to each other via a coupling element. The coupling element is for example a rotating sleeve element rotatably mounted to the support device. It is advantageous for the coupling element to form a force drawer, by which torsion is provided into the helical spring arrangement, and the stored spring force of the helical spring arrangement Can be withdrawn .

More preferably, the transmission, in particular Bowden, couples the movable part with the spring energy storage device. Cable cable Drive or chain drive is fitted. The transmission may be a reduction gear or an transmission gear. It is particularly advantageous for the transmission to convert a linear movement of the movable part, eg a height adjustment movement, into a rotational movement for rotating the second longitudinal end of the helical spring arrangement or vice versa.

More preferably, an adjustment device for adjusting the different torsional initial stresses of the helical spring arrangement is mounted, the adjustment device comprising a rotary holder which is rotatable and can be fixed in at least two rotational positions. And the rotating holder has the spiral The spring arrangement is fixed. By determining the rotational position of the rotary holder, the helical spring arrangement can be subjected to an initial stress, for example to adapt the spring energy storage device to the then-weight of the movable part.

The adjusting device may comprise a self-locking gear, such as a worm gear, for driving the rotary holder and / or a locking device for rotatably locking the rotary holder. It is advantageous.

More preferably, the adjusting device is provided with a display device for displaying the initial torsional stress of the helical spring arrangement at that time. The display device comprises, for example, a counter wheel coupled with movement with the rotation holder or the helical spring arrangement. This counter wheel is advantageously caught in several rotational positions. This allows simple coupling by means of a drive disposed in the rotation holder or the helical spring arrangement and engaging with and accommodating a suitable protrusion on the counter wheel. The counter wheel and the rotary holder or The helical spring arrangement is more preferably coupled in the form of a reduction gear, so that rotation of the rotation holder results in less rotation of the counter wheel. Electric gears are also possible.

More preferably, the rotary holder of the adjustment device is rotatably mounted on the rod-shaped support device. Of course, the rotary holder may be installed in the housing of the spring energy storage device or in the holding device.

More preferably, the spring energy storage device has a bearing arrangement for movably mounting the spring energy storage device to the base portion or to the movable component. This bearing arrangement is so-called floating to prevent the spring energy storage device from being tightened in a device in which the spring energy storage device is mounted. Enable installation It is advantageous for the bearing arrangement to allow rotational movement about the axis of rotation parallel to the longitudinal axis of the helical spring arrangement. Preferably, the bearing arrangement also enables axial movement in parallel to the longitudinal axis of the helical spring arrangement. The bearing arrangement may for example be arranged in the holding device of the spring energy storage device, for example in a housing. For example, a journal or bearing receptacle is provided, which journal or bearing receptacle engages with the corresponding bearing receptacle or journal (depending on where the spring energy storage device is mounted) in the base part or the movable part. . Rotational movement caused by storing spring force into the spring energy storage device or by releasing the spring force is enabled by the 'floating' bearing arrangement, but by the force drawing element or the second longitudinal end of the helical spring arrangement. It is advantageous to be limited. For example, the rod-shaped support device, or force extractor connected with the rod-shaped support device, limits this rotational movement. Axial motion is limited by, for example, vertical struts or feet of the device in which the spring energy storage device is disposed.

More preferably, a detachable fixing device is mounted to fix the second longitudinal end of the helical spring arrangement. It is advantageous for the operator to actuate the fixing device via a movable device, which is arranged, for example, in the region of the movable part. The movable device is for example a Bauden cable Include. The spring energy storage device or the helical spring arrangement may be separated or fixed by the fixing device.

It is advantageous to have a transport safety device, which allows the helical spring arrangement to be secured in a rotatable manner for the transport of the spring energy storage device in the initial stressed state. The transport safety device acts, for example, on the second longitudinal end of the helical spring arrangement.

Best Mode for Carrying Out the Invention Embodiments of the present invention will be described below with reference to the drawings.

1 is a perspective view of a furniture according to the invention,

2 is a partially cutaway side view of the furniture of FIG. 1, along line A-A of FIG. 1, FIG.

FIG. 2A is an enlarged view of a dotted line display portion of FIG. 2, FIG.

3 is a perspective view of a first spring energy storage device of the furniture of FIG. 1, FIG.

4 shows a spring energy storage device according to FIG. 3 with a transparently painted housing,

5 is a cross section of the spring energy storage device of FIG. 3, along line B-B of FIG. 3, FIG.

6 is a cross-sectional view of the spring energy storage device of FIG. 5, along the cutting line C-C of FIG. 5, FIG.

FIG. 7 is a cross-sectional view of the spring energy storage device of FIG. 5, along the cut line D-D of FIG. 5, FIG.

8 is a cross section of the spring energy storage device of FIG. 5, along the cutting line E-E of FIG. 5, FIG.

9 is a perspective view of the sliding element for the support of the helical spring arrangement of the spring energy storage device according to FIG. 4, FIG.

10 is a side view of the sliding element of FIG. 9, FIG.

11 is a perspective view of a transmission arranged in at least one vertical strut of the furniture according to FIGS. 1 and 2;

12 is a partially cutaway perspective view of a second spring energy storage device for the furniture of FIG. 1 with a transparently painted housing, FIG.

12A is an enlarged view of the section V1 of FIG. 12, FIG.

13 shows a partial view of the spring energy storage device according to FIG. 12 with an uncut coil spring, FIG.

FIG. 14 is a cross section of the spring energy storage device according to FIG. 12, corresponding to line B-B of FIG. 12.

The furniture 10, for example office furniture, has a working plate 11, the height of which can be adjusted relative to the pedestal 12. The working plate 11 is a component 14 which is movable relative to the pedestal 12 forming the base portion 13. The vertical movement of the working plate 11 is aided by the spring energy storage device 15 according to the invention. The spring energy storage device 15 realizes weight compensation, which spring energy storage device is advantageously balanced to hold the work plate 11 at different height positions without the operator's involvement or essentially without the operator's involvement. Do. The upper position of the working plate 11 is shown in solid lines in FIG. 1 and the lower position is shown in broken lines.

The spring energy storage device 15 is for example a component of the pedestal 12. For example, the spring energy storage device 15 is arranged between two vertical struts or pillars 16 of the pedestal 12 in the form of a horizontal bar. The pillar 16 is on the foot 17. The foot 17 protrudes forward, thus forming a C-shaped foot. But a T-foot is also possible. In order to be able to adjust the height of the working plate 11, the column 16 can be adjusted in the longitudinal direction, for example, it is preferable to be nested. The upper pillar 19 of the pillar 16 is guided in the lower pillar 18. It is advantageous for the trunk 20 to be fixed to the upper pillar 19, which has, for example, a side 21.

The working plate 11 can be adjusted at an angle with respect to the body 20 (the tilt adjusting device is not shown). Body 20 may have other elements, such as a drawer or sliding shelf (not shown). Therefore, the body 20 in the furniture 10 can be adjusted in height with the working plate 11 arranged on the body.

The spring energy storage device 15 and the movable component 14 are coupled in connection with the movement via the transmission 22. The pillar 16 is in this embodiment of metal, for example sheet metal and / or plastic. The pillar 16 is empty inside. In this way, a space in which one transmission device 22 can be arranged is created. For example, in the furniture 10 the transmission 22 is arranged in the right column 16 of FIG. 1, and therefore in a protected, ie inside space 23 inaccessible to the operator.

The transmission 22 converts the linear motion, which starts at the height adjustment of the part 14, into a rotational motion for storing the spring force into the spring energy storage device 15. In the opposite force direction, the spring energy storage device 15 provides a rotational force to the transmission 22, which converts the rotational force into an upward linear force supporting the part 14.

One or several drives 24 fixed to the upper pillar 19 are perpendicular to the lower pillar 18. It passes through the slot 25 and is connected with the chain 26. For example, the drive body 24 is a bolt, which is fitted through a bore in the upper column 19 and screwed into the drive body 27 of the chain 26. The drive body 27 is also a chain clamp for the chain 26.

The chain 26 rotates around the lower pinion 28 and the upper pinion 29 rotatably installed on the vertical support 30. The vertical supports 30 are, for example, plate-like parts, which are sheet metal parts connected to each other by lateral connectors 31. The pinions 28, 29 are sandwiched between the supports 30. At least one of the two pinions 28, 29 is advantageously adjusted to adjust the tension of the chain 26 in the vertical direction.

The support roller 33 is arrange | positioned at the upper end 32 of the transmission 22, and the inner surface of the upper pillar part 18 rolls on this support roller. The support roller 33 supports, for example, the narrow faces facing each other of the upper pillar 19 having an essentially contoured inner contour. The support roller 33 prevents the inclination of the upper pillar portion 19 which is loaded not only vertically but also horizontally, for example, by the trunk 20 protruding forward. Of course, the support roller 33 is not necessarily required when the pillar portion 19 is subjected to a uniform or symmetrical load.

It is advantageously also arranged in the left column 16 of FIG. 1 that the transmission is of the type of the transmission 22 and / or of the support roller arrangement, which is of the type of the support roller 33. And a support roller. Instead of the support roller 33, for example, a sliding piece or the like may be mounted.

The slot 25 is advantageously narrow, in particular smaller than 8 mm, so that the operator, in particular a child, cannot put a finger in the slot. Therefore, there is no injury. Therefore, the furniture 10 can be used as furniture for teenagers or children.

As described above, the transmission 22 may be arranged only in one of the two pillars 16. In the following, for example, one transmission device 22 is arranged in each of two pillars 16.

In this case, the spring energy storage device 15 is coupled in relation to the force with the two transmissions 22. In order to rotatably couple the units, a bolt 34 is fitted into the receiving portion 35 of the lower pinion 28 and into the receiving portion 36 of the spring energy storage device 15.

Forming power outlet The receptacle 36 is arranged in front of the rotating shaft 37 of the spring energy storage device 15. The rotary shaft 37 extends in the longitudinally extending direction 38 of the spring energy storage device 15 and is rotatably installed in the housing 39 of the spring energy storage device. The longitudinal ends 40, 41 of the rotary shaft 37 are rotatably mounted to the bearings 42, 43 of the housing 39. The bearings 42, 43 are arranged in the covers 44, 45, which cover the central portion 46 of the housing 39, respectively, from the front side. The central portion 46 is a continuous cast part, for example made of metal continuous casting. The covers 44, 45 are screwed to the central portion 46, for example with bolts 47.

The rod-shaped support device 48 for the coil spring 49 of the helical spring arrangement 50 is formed of a rotating shaft 37. The support device 48 penetrates through the inner space 89 of the coil spring 49. In order to store the spring force in operation of the movable component 14, the linear movement of the movable component is converted by the transmission 22 into rotational movement and transmitted to the helical spring arrangement 50. One side of the coil spring 49 is rotatably fixed to the housing 39 and the other side is rotatably fixed to the rotating shaft 37. For example, the first longitudinal end 51 of the coil spring 49 is connected to a holding device 53, which can be rotatably fixed in relation to the housing 39, and the second longitudinal end of the coil spring ( The region of 52 is rotatably connected to the rotating shaft 37. Therefore, the rotational movement of the rotary shaft 37 results in the twisting of the coil spring 49 supported by the holding device 53.

In this torsion the coil spring in principle tends to be wavy, ie it tends to deform across the longitudinal extension direction 38 or across the rod-shaped support device 48. The support device 48 restricts the deformation into a wave shape, in which case the deformation in the wave shape is prevented due to the structure of the coil spring 49, which is the original invention, and is particularly uniform in the support device 48. Rotatable support is secured.

For support on the rod-shaped support device 48 or the rotary shaft 37, the rotary bearing device 54 of the helical spring arrangement 50 is used. In order to absorb the torsion or to release the stored spring force, the torsion winding section 55 of the helical spring arrangement 50 is used. The rotary bearing device 54 comprises a support winding section 56 of the coil spring 49. The diameter of the winding 57 of the torsion winding section 55 is larger than the diameter of the winding 58 of the support winding section 56.

The windings 58 of the support winding section 56 are preferably compressed and wound into agglomerates, ie they are wound when the coil spring 49 is not subjected to torsional load or its general initial stress (movable part 14). It is already in contact with each other when subjected to torsional loads only in the range of its upper position (the coil spring already has an initial stress when in its upper position). In contrast, the windings 57 are mutually spaced in the axial direction in the longitudinal extension direction 38.

The inner cross section of the support winding section 56 does not decrease or only slightly decreases upon absorption of the torsional force, so that the support winding section 56 can essentially freely rotate on the support device 48 or the rotating shaft 37. . Therefore, the coil spring 49 is guided by the support device 48 but can rotate freely in nature, so that no unwanted frictional losses occur and the spring energy storage device 15 is not interrupted.

The sliding property of the support winding section 56 is improved by the sliding element 59 disposed in the inner circumference 60 of the support winding section 56. The sliding element 59 is for example a plastic sleeve, which is fitted into the supporting winding section 56.

For example, the sliding element 59 can be attached to the support winding section 56. In this case, the sliding element 59 is formed as a clamping ring or clamping sleeve, and has a slot 61 extending in its longitudinal direction, so that the sliding element can be compressed and, in the assembled state, the supporting winding section It is clamped about the inner circumference of 56.

In order to fix the sliding element 59, projections 62, 63 on the outer surface of the sliding element 59 are used. The protrusion 62 is a helical protrusion in the outer circumference 64 of the sliding element, which, when assembled, engages between adjacent windings 58 of the support winding section 56. The sliding element 59 may be screwed into the support winding section 56, or may be unintentionally released when twisting of the coil spring 49 occurs. The release of the screw engagement is prevented by the projection 63, which projects outwardly in the forward circumference 64 outwardly in the region of the front end of the sliding element 59 and likewise engages between the windings 58. .

In the inner circumference of the sliding element 59 is arranged a rib 65 extending in the longitudinally extending direction 38, which rib improves the sliding characteristics of the sliding element 59 and is compressed for its function as a clamping sleeve. Make it easy.

The diameter of the winding 57 of the torsion winding section 55 increases first from one rotary bearing device 54 toward the next rotary bearing device, increases to the maximum, and then decreases linearly, thus reducing the coil spring 49. Conical or waist shaped outer contours are formed.

Each longitudinal end 51, 52 is advantageously formed as a supporting winding section 56 or a rotary bearing device 54, thus rotating on the one hand (in this case) with the holding device 53 on the one hand. Simple force drawing or simple force coupling with the shaft 37 is possible.

The first longitudinal end 51 of the coil spring 49 is fixed to the holding device 53 in a rotatable manner with respect to the housing 39. The second longitudinal end 52 is fixedly rotatable to the holding device 66 of the fixing device 67. The holding device 66 is rotatably connected to the rotary shaft 37, for example heated on the rotary shaft. In contrast, the holding device 53 can be rotatably or rotatably fixed in relation to the housing 39. The holding device 53 is adapted to adjust the different torsional initial stresses of the coil spring 49. It is formed of the rotary holder 68 of the adjusting device 70. The rotary shaft 37 passes through the rotary holder 68 and can be rotated in relation to the rotary holder-unlike the holding device 66. The rotary holder 68 is rotatably mounted to the rotary shaft 37 together with the bearing 69.

In order to keep the coil spring 49 rotatable, the holding devices 53, 66 have front grooves 71, 72 for receiving the longitudinal ends 51, 52. In addition, the longitudinal ends 51, 52 are each secured by at least one bolt 73. The bolt 73 penetrates a circumferential wall 74. 75 that radially defines the grooves 71, 72 and enters between two adjacent windings of each of the coil springs 59. The groove 71 is defined by the circumferential wall 74 on the outside and by the inner wall 76 on the inside. The groove 72 is defined by the circumferential wall 75 and by the rotating shaft 37 passing through the holding device 66.

Flange-shaped protrusions 77, 78 in the outer circumference 79 of the holding device 66 are at least respectively engaged with the latch 82 of the fixing device 67 and the latch 83 of the transport safety device 84. One recess 80, 81 is provided in which the helical spring arrangement 50 is twisted by the transport safety device. It can be made rotatable and safe for transport of the furniture 10 or the spring energy storage device 15 in the initial stressed state. In order to secure the holding device 66 in a rotatable manner, the latches 82, 83 are engaged with recesses 80. 81 that are essentially uniformly distributed over the entire outer circumference of the projections 77, 78 from the radial outside. All.

The latch 83 is formed, for example, of a bolt, which can be screwed into the bore 85 in the side wall of the housing 39 or the cover 45. The latch 83 does not protrude forward of the outer circumference of the housing 39 even when the safety of the transport safety device 84 is released.

On the upper surface of the housing 39, there is a fixing portion 86 for installing the Bowden cable 87 of the movable device 88 for operating the fixing device 67. The Bowden cable 87 extends from the spring energy storage device 15 toward the movable part 14, ie toward the top surface of the work plate 11 or towards the side edges, which can be easily operated by an operator, for example.

In this embodiment, two projections 77 and 78 in the form of pinions are provided. It is also possible for the latch of the fixing device and the latch of the transport safety device to engage the recess of the rotatable holding device for the helical spring arrangement. It is also possible to provide protrusions in front of the rotatable holding device and to engage the protrusions with the recesses in the latch elements in order to make it impossible to rotate.

The movable device 88 advantageously comprises a spring arrangement, for example a spring 107 in the fixing 86 and / or in the Bowden cable 87, which spring automatically latches the latch 82. The holding device 66 is operated to a locking position which secures it in a rotatable manner.

The adjusting device 70 is for operating the rotary holder 68. A transmission device 90 is provided. The transmission 90 is advantageously a self-locking gear, such as a worm gear. The worm shaft 91 meshes with the teeth 92 in the outer holder 93 of the rotary holder 68 or the holding device 53. The worm shaft 91 extends across the longitudinal extension direction 38. The worm shaft 91 is rotatably installed in the cover 45. At least one longitudinal end of the worm shaft 91 penetrating the housing 39 is arranged a movable device 104, for example a hexagonal socket, for the transmission 90. The worm shaft 91 is secured in the housing 39 so as not to be lost by the safety ring 94 screwed into the cover 45.

The display device 95 of the adjusting device 70 is used to display the initial torsional stress of the coil spring 49 at that time. At least one drive body 96 is disposed on the outer circumference 93 of the rotary holder 68 to operate the display device 95, which is radially separated from the rotary holder 68, for example. The drive body 96 is arranged in the flange groove 97 between the receiving groove 71 or the receiving section and the pinion teeth 92 for the coil spring 49. The drive body 96 operates the counter wheel 98 of the display device 95 by engaging the recess 99 in which the drive body is distributed around the outer side of the counter wheel 98. The recess 99 is formed between the pin-shaped protrusions 106, for example, away from the front of the counter wheel 98.

The counter wheel 98 is rotatably installed in the housing 39. It is advantageous for the counter wheel 98 to have a detent mechanism, ie the counter wheel keeps stopping the rotational position during every rotational movement by the drive body 96. The outer circumference of the counter wheel 98 preferably has an indication, for example a number or symbol, which indicates the initial torsional stress of the coil spring 49. The indication can be seen through the window 100 on the top of the cover 45, for example. The flange wheel 97 with the counter wheel 98 and the drive body 96 forms a reduction gear, in which the counter wheel 98 per revolution of the rotary holder 68 is detent position, for example. continue running around position).

The spring energy storage device 15 can in principle be rigidly installed between the pillars 16. However, in the present embodiment, floating installation is provided by means of the bearing arrangement 101. The bearing arrangement 101 enables rotational movement about the axis of rotation 105 in parallel with respect to the longitudinal axis or longitudinal extension direction 38, and also enables axial movement in parallel with the longitudinal axis 38.

At least one front face 103 of the housing 39 is spaced from the pillar 16 for axial movement.

The bearing bolts 102 of the bearing arrangement 101 project in front of the front face 103. The bearing bolts 102 engage with the bearing recesses in the column 16, not shown in the figure. The bearing bolts 102 are spaced relative to the longitudinal ends 40, 41, so that the housing 39 is rotatable about the bolts 102 to a predetermined degree, and the longitudinal extension direction of the bearing bolts 102 ( 38) or axially move longitudinally. Therefore, the spring energy storage device 15 is floating and movable in the rotational operation of the rotary shaft 37 or the force release of the rotary shaft, which prevents tightening.

In a second embodiment having a spring energy storage device 115 according to the invention which can be used in place of the spring energy storage device 15 and shown in FIGS. 12-14, a coil spring suitable for absorbing torsional forces. Another concept for rotatably installing 149 is realized. Since the spring energy storage device 115 is partially provided with components of the same type as the spring energy storage device 15, these components are denoted by the same reference numerals, and redundant descriptions are omitted. Similar components are denoted by reference numerals 100 larger than the spring energy storage device 15.

Unlike the coil spring 49, the coil spring 149 is not waist-shaped and has essentially the same winding diameter over its entire longitudinal extension direction. The longitudinal ends 151, 152 of the coil spring 149 are rotatably fixed to the holding device 166 and the rotation holder 168, for example to the protrusion 186, to absorb the torsional force. The functionality of components 166 and 168 is the same as that of components 66 and 68. Coil spring 149 has, for example, an essentially continuous torsion winding section.

When torsion is applied the coil spring 149 tends to be wavy. In this case the rotary bearing device 154 becomes effective, that is, by means of the rotary bearing device the coil spring 149 has a small friction on the support device 48 disposed in the inner space 189 of the coil spring 149. It is rotated and supported. The rotary bearing device 154 includes a ring bearing 180, such as a ring-ball bearing 182, wherein the coil spring 149 is supported on the ring-ball bearing when subjected to a torsional load.

The ring bearings 180 are arranged on the support device 48 such that they can be advantageously moved axially at an axial gap 181. The inner diameter of the inner bearing ring 187 of the ring bearing 180 is larger than the outer diameter of the support device 48, for example. The axial play is used to advantageously reduce the tightening when the coil spring 149 is supported on the ring bearing 180. In addition, the axial play of the ring bearing 180 on the support device 48 simplifies the assembly of the ring bearing 180. Of course, the rotary bearing device 180 can be glued or heat-fitted, for example, to be firmly assembled on the support device 48.

A spacer element 183 is disposed between the ring bearings 180, which inherently establishes the axial spacing 181, but preferably allows the axial play of the rotary bearing device 154. Spacer element 183 is, for example, spring 184. The spring 184 is supported by the inner bearing ring 187 of the ring bearing 180. The support device 48 is fitted through the spring 184.

In the untwisted state, the coil spring 149 is radially spaced 185 from the ring bearings 180. The inner circumference of the coil spring 149 is greater than the outer circumference of the outer bearing ring 188 of the ring bearing 180. The inner circumference of the coil spring 159 is fully or partially adjacent to the outer circumference of the ring bearing 180 only when the coil spring is subjected to a torsional load, for example at initial stress or during storage of the torsional force. However, the ball bearing 182 allows the coil spring 149 to rotate on the support device 48 with little friction even in a twisted state.

Claims (33)

As a spring energy storage device, the spring energy storage device is installed between a base portion 13 and a component 14 that is relatively movable relative to the base portion 13, wherein the spring energy storage device is a movable component 14. A spring energy storage device having a spiral spring arrangement 50 for storing spring force when actuated by the torsion of at least one torsional winding section 55 of the spiral spring shape of the spiral spring arrangement 50. The spring energy storage device has a rod-shaped support device 48 for supporting the helical spring arrangement 50 when torsion is applied, the support device having an interior of the helical spring arrangement 50. At least one rotating bezel engaged with or passing through the interior spaces 89 and 189 and on the support device 48. Ring device is rotated and possibly installation, wherein the at least one torsion coil section 55 is the spring energy storage device being supported by the rotary bearing device, when the torsion is applied. The at least one torsion winding section 55 is arranged between two rotary bearing devices 54 and 154 and / or the at least one rotary bearing device 54 and 154 is Spring energy storage device, characterized in that arranged between the torsion winding sections (55). 3. Spring energy storage device according to claim 1 or 2, characterized in that the at least one torsion winding section (55) is supported on the at least one rotary bearing device (54, 154). 4. Spring energy storage device according to any one of the preceding claims, characterized in that the windings (57) of the at least one torsional winding section (55) have a mutual spacing (A) in the axial direction. 5. Spring energy storage device according to any one of the preceding claims, characterized in that at least two windings (57) of the at least one torsional winding section (55) have different diameters (D). 6. The diameter (D) of the winding (57) of the at least one torsion winding section (55) is separated from the area in contact with the at least one rotary bearing device (54, 154). Spring energy storage device characterized by increasing toward the area. 7. The at least one rotary bearing device (54, 154) comprises at least one support winding section (56) of the helical spring arrangement (50). The diameter d of the winding 58 of the supporting winding section is smaller than the diameter of the winding of the at least one torsion winding section 55, the supporting winding section being integrally connected to the torsion winding section, and thus to the torsional The storage of the spring force by means of the at least one torsion winding section 55 absorbs a torsional load greater than the at least one support winding section 56, the support winding section 56 being the support device 48. Spring energy storage device, characterized in that supported on the rotation. 8. The coil arrangement according to claim 7, wherein the helical spring arrangement 50 is one unique coil. Spring energy storage device, characterized in that the torsion winding section (55) and the support winding section (56) are alternately arranged next to each other in the coil spring. 9. The windings 57 of the at least one torsional winding section 55 of claim 7 or 8, wherein the axial mutual spacing a of the windings 58 of the at least one supporting winding section 56 is Spring energy storage device, characterized in that less than the axial mutual spacing. 10. The torsional load according to any one of claims 7 to 9, wherein the windings 58 of the at least one support winding section 56 are such that the helical spring arrangement 50 is essentially a torsional load due to the storage of spring force. Spring energy storage device characterized in that the contact with each other in the axial direction when not received. The at least one sliding element 59 is arranged in the inner circumference of the at least one support winding section 56 and / or the at least one support winding section (1). 56) A spring energy storage device, characterized in that the inner circumference has a slidable coating. 12. The spiral protrusion (62) according to claim 11, wherein the at least one sliding element (59) engages in its outer circumference (64) between adjacent windings (58) of the at least one support winding section (56). Spring energy storage device, characterized in that having a. 13. The at least one sliding element 59 according to claim 11 or 12, wherein the at least one sliding element 59 is formed as a clamping ring or clamping sleeve, in which the clamping ring or clamping sleeve is assembled. Spring energy storage device, characterized in that clamped against the inner circumference of the. 14. Spring energy storage device according to any of claims 11 to 13, characterized in that the at least one sliding element (59) limits the narrowing of the inner cross section of the at least one support winding section (56). . The method according to claim 1, wherein the at least one rotary bearing device 54, 154 comprises a rotary sleeve element or a ring bearing 180, in particular a ball bearing 182 or a roller bearing. Spring energy storage device characterized in that. 16. Spring energy storage device according to claim 15, characterized in that the at least one rotating sleeve element or the ring bearing (180) can be moved axially on the support device (48). 17. The at least one torsion winding section 55 according to claim 15 or 16 is adapted for the at least one rotating sleeve element or the ring bearing 180 when the torsion winding section is essentially free of torsional load. Spring energy storage device, characterized in that it has a radial gap (185). 18. The spring energy storage according to any one of claims 15 to 17, characterized in that at least one spacer element (183) is arranged between at least two said rotating sleeve elements or said ring bearings (180). Device. 19. Spring energy storage device according to claim 18, characterized in that the spacer element (183) comprises in particular a spring (184) pierced by the support device (48). 20. The support device (48) according to any one of claims 1 to 19, wherein the support device (48) is formed of a rotating shaft (37) rotatably mounted to a housing (39) or a frame of the spring energy storage devices (15, 115). Spring energy storage device, characterized in that. 21. The area of the second longitudinal end 52 of the helical spring arrangement 50 is rotatably fixed to the rotary shaft 37, and at least one longitudinal of the rotary shaft 37. The directional end (40, 41) forms a force drawer for force coupling with the movable component (14). 22. The spring energy storage device according to any of the preceding claims, wherein the spring energy storage device comprises a transmission (22), in particular a Bowden cable transmission and / or a chain transmission, wherein the transmission comprises: 14) Spring energy storage device, characterized in that disposed between the spring energy storage device (15, 115) or between the spring energy storage device (15, 115) and the base portion (13). 23. The device according to any one of the preceding claims, wherein the spring energy storage device is rotatable and can be fixed in at least two rotational positions to adjust different torsional initial stresses of the helical spring arrangement 50. And an adjusting device (70) having a rotating holder (68, 168) in which said spiral spring arrangement (50) is fixed to said rotating holder. 24. Spring energy storage device according to claim 23, characterized in that the adjustment device (70) comprises a self-locking gear (90), in particular a worm gear, for actuating the rotary holder (68, 168). 25. Spring energy according to claim 23 or 24, characterized in that the adjustment device (70) comprises a display device (95) for displaying the then torsional initial stress of the spiral spring arrangement (50). Storage device. 26. Spring energy storage device according to any one of claims 23 to 25, characterized in that the rotary holder (68, 168) is rotatably mounted on the rod-shaped support device (48). 27. The bearing arrangement according to any one of claims 1 to 26, wherein the spring energy storage device comprises a bearing arrangement for movably installing the spring energy storage device to the base portion 13 or to the movable component 14. 101, wherein the bearing arrangement 101 has a rotational movement about the axis of rotation parallel to the longitudinal axis of the helical spring arrangement 50 and / or parallel to the longitudinal axis of the helical spring arrangement 50. Spring energy storage device characterized by enabling axial movement. 28. A device according to any one of the preceding claims, wherein the spring energy storage device comprises a removable securing device (67) for securing the second longitudinal end (52) of the helical spring arrangement (50). Spring energy storage device characterized in that it comprises. 29. Movable device 88 according to claim 28, wherein the fastening device 67 is movable by an operator, in particular in the region of the movable part 14, for separating and / or securing the helical spring arrangement 50. Spring energy storage device comprising a. 30. The device of any one of the preceding claims, wherein the spring energy storage device has a transport safety device 84, by which the spiral spring arrangement 50 is subjected to a torsional initial stress. Spring energy storage device, characterized in that it can be made rotatable and safe for transport of the spring energy storage device (15, 115) in a state. 31. The movable element 14 according to any one of claims 1 to 30, wherein the movable component 14 can be adjusted relative to the base portion 13, and the spring energy storage devices 15, 115 are Spring energy storage device, characterized in that it is mounted for weight compensation in adjusting the height of the part (14). Furniture comprising a spring energy storage device (15, 115) according to claim 1, wherein the height adjustable part (14) is formed in particular from the working plate (11) of the furniture (10). , In particular office furniture and / or youth furniture and / or writing furniture. A spring energy storage device (15, 115) according to any of claims 1 to 28 for weight compensation for a movable component (14), in particular a prefabricated door, or a roller shutter mounted for closing an opening. A closure device for closing an opening, in particular a building opening.

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