DE102019125386B4 - Height positioning device and panel system incorporating same - Google Patents

Abstract

A height positioning device (1) comprising: a) a body (2) positionable at a height H between an upper height H2 and a lower height H1, where: lower height H1 ≤ H ≤ upper height H2; andb) at least one support system (3) for the body (2) coupled to the body (2), comprisingb1) a gas spring (4,9),b2) a flexible traction means (5), andb3) at least one deflection element (6,7 ) around which the flexible traction means (5) is guided, characterized in that the gas spring (4,9) is located on a first side S1 of the deflection element (6) and the body (2) on a second side S2 of the deflection element ( 6), and the flexible traction means is a roller chain (5) which, due to its weight, essentially compensates for a progression of the gas spring (4), the at least one deflection element (6, 7) being a chain wheel or a chain disk, and the roller chain (5) is designed in such a way that when the height H2 of the body (2) is set, a longitudinal section L of the roller chain (5) that is displaced over a vertex P1 (13) of an upper deflection element (6) onto its second side has a mass ΔMZ that generates a force FZ exerts on the gas spring (4.9), which essentially balances out the progressive force ΔFP, with the progressive force ΔFP resulting from the difference between the force FI of the retracted gas spring (4.9) and the force FA of the extended gas spring (4.9).

Description

1. a) einen in einer Höhe H zwischen einer oberen Höhe H₂ und einer unteren Höhe H₁ positionierbaren Körper, wobei gilt:
   • untere Höhe H₁ ≤ H ≤ obere Höhe H₂; und
2. b) mindestens ein mit dem Körper gekoppeltes Tragsystem für den Körper, umfassend b1) eine Gasfeder,
   • b2) ein flexibles Zugmittel, und
   • b3) mindestens ein Umlenkelement, um welches das flexible Zugmittel geführt ist. Gegenstand der Erfindung ist außerdem ein diese Höhenpositioniervorrichtung enthaltendes Tafelsystem.

The invention relates to a height positioning device, comprising:

1. a) a body that can be positioned at a height H between an upper height H ₂ and a lower height H ₁ , where:
   • lower height H ₁ ≤ H ≤ upper height H ₂ ; and
2. b) at least one support system for the body coupled to the body, comprising b1) a gas spring,
   • b2) a flexible traction means, and
   • b3) at least one deflection element around which the flexible traction means is guided. The subject of the invention is also a panel system incorporating this height positioning device.

Positioning a body at a desired height conveniently and accurately is a common problem. Support systems are often used for this purpose, which are intended to enable a user to set a desired height as conveniently and precisely as possible with the least possible effort. The body is usually moved directly by a user. It is then desired that the body remains in the desired set height position as soon as a user no longer exerts any force on the body.

This also applies in particular to blackboard systems, blackboard systems with projection devices or displays, such as are used in classrooms, meeting rooms and conference rooms. Such panel systems generally include one or more panels, hereinafter abbreviated as "panel", and a support frame, the panel being/are generally slidably arranged along the support frame between a minimum and a maximum height position. In order to enable a power-saving displaceability, a counterweight is often used, which is coupled to the panel via a cable or chain element and which is arranged in or on the panel frame so that it can be adjusted in height. The counterweight often runs inside the pylons of a support frame and balances the weight of the panels, including all fittings and fasteners, so that the panel remains at any height position without further action. Such panels with a counterweight are, for example, in the publications DE 19 81 489 U , DE 69 02 282 U , DE 32 39 502 A1 , DE 16 72 884 U and DE 83 24 708 A1 described.

However, the heavy counterweights to be used increase the weight of a panel system considerably, making it more difficult to transport. This disadvantage also applies in particular to movement of the board system when it is actually being used in front of participants in a lesson or meeting. In addition, in such systems, a panel will still move somewhat if a user has already let go of it, ie is no longer exerting any force on the panel. This also often results in the panel hitting the upper or lower end of the height range. This leads to unwanted noise and can also affect the life and functionality of a board system. It is true that with such board systems, elastic stop elements are generally also used, which are intended to mitigate the consequences of hitting. However, even such stop elements cannot prevent unwanted movements of the carrying system, including the counterweight, from being struck.

In addition to panel systems in which the height is positioned by means of counterweights, however, such systems are also known in which the height is positioned with the aid of a spring mechanism such as a gas pressure spring. Such systems are for example in the publications DE 42 35 764 A1 , DE 19 18 262 A and DE 10 2008 033 059 A1 described.

• - einem Träger, an dem wenigstens ein Präsentationselement befestigbar ist;
• - einer Halterung, an welcher der Träger zwischen einer ersten und einer zweiten Höhenposition verschiebbar angebracht ist;
• - wenigsten einem flexiblen Zugmittel, dessen eines Ende an dem Träger bzw. einem mit dem Träger bewegbaren Element befestigt ist und dessen anderes Ende an der Halterung bzw. einem höhenfesten Element befestigt ist;
• - wenigstens einem Umlenkelement, um welches das wenigstens eine Zugmittel in der Art eines Flaschenzugs geführt ist; und
• - einem pneumatischen Kolbenmechanismus, an dessen einem Ende das wenigstens eine Umlenkelement befestigt ist und dessen anderes Ende so an der Halterung bzw. einem höhenfesten Element oder an dem Träger bzw. einem mit dem Träger bewegbaren Element abgestützt ist, dass der Kolbenmechanismus ein Gesamtgewicht des Trägers und des wenigstens einen daran befestigbaren Präsentationselements im Wesentlichen ausgleicht, um den Träger an einer beliebigen Position zwischen der ersten und der zweiten Höhenposition zu halten.

So describe the publications DE 10 2008 033 059 A1 and EP 2 145 565 A2 a height positioning device for a presentation device, with

• - A carrier to which at least one presentation element can be fastened;
• - A bracket on which the carrier is slidably mounted between a first and a second height position;
• - At least one flexible traction means, one end of which is attached to the carrier or an element that can be moved with the carrier and the other end of which is attached to the holder or an element that is fixed in height;
• - At least one deflection element, around which the at least one traction means is guided in the manner of a block and tackle; and
• - A pneumatic piston mechanism, at one end of which the at least one deflection element is attached and the other end of which is supported on the holder or a height-fixed element or on the carrier or an element that can be moved with the carrier such that the piston mechanism supports the total weight of the carrier and the at least one presentation element that can be attached thereto essentially compensates, to hold the carrier at any position between the first and second height positions.

wobei die Progressionskraft ΔF_P der Unterschied zwischen der Kraft F_I der eingefahrenen Gasfeder und der Kraft F_A der ausgefahrenen Gasfeder ist. Die Progression gibt es entsprechend auch bei Gaszugfedern, die nach dem umgekehrten Funktionsprinzip wie die Druckfedern arbeiten. D.h. bei einer Gaszugfeder wird durch den Gasdruck im Zylinder die Kolbenstange nach Innen gezogen.A gas pressure spring as an example of a gas spring essentially consists of a pressure tube, a piston rod and a piston, the pressure tube being filled with nitrogen gas which is under high pressure. The piston rod can enter the gas spring up to a certain extent, the so-called stroke of the gas spring. The force of a gas spring is determined by the pressure of the nitrogen gas. The further a gas spring is pushed in, the larger the volume that the piston rod takes up. The pressure in the gas spring and thus the force of the gas spring increase when the gas pressure spring is pushed in. The "Progression P (in %)" of a gas spring that describes this phenomenon is defined as follows: $$\text{P}=100\times \left(\mathrm{\Delta }{\text{f}}_{\text{P}}/{\text{f}}_{\text{A}}\right),$$

where the progressive force ΔF _P is the difference between the force F _I of the retracted gas spring and the force F _A of the extended gas spring. The progression also applies to gas springs, which work on the opposite principle to compression springs. In the case of a gas tension spring, the piston rod is pulled inwards by the gas pressure in the cylinder.

If a gas spring is used in a height positioning device to compensate for the gravitational force of a body to be positioned at a height, e.g. a board, the progression of the gas spring means that the force does not remain constant over the adjustment path and the height positioning device cannot be used without aids ( e.g. locking) remains at the set height position. The height positioning device therefore moves back from the set position to the position in which the gravitational force of the panel exactly corresponds to the opposing force of the gas spring.

When adjusting the height of a body, e.g. a board, the progression means that the force to move e.g. the board increases with increasing height adjustment. In addition, the panel then continues to move even after a force has been removed by a user of the panel. Compensation for the progression would therefore be desirable.

The publication US 2016/0 037 907 A1 relates to a height-adjustable table system and a method. In particular, a lift mechanism is described comprising a first leg assembly comprising: a first member; and a second member movable relative to the first member along a first longitudinal axis; a second leg assembly comprising a third member; and a fourth member movable relative to the third member along a second longitudinal axis; and a synchronizing assembly connecting the first and second leg assemblies, the synchronizing assembly being configured to balance movement between the first and second leg assemblies. The synchronization assembly includes a wheel assembly connected to a first tension member and a second tension member, the first and second tension members being connected to at least one of the first and second leg assemblies, respectively. A counterbalancing mechanism is also described that may include a gas spring having a cylinder and a piston that can move in and out of the cylinder. A moveable tension member may be attached between a first part at a fixed height and a second moveable part. The tension member can be any linear connecting element such as a rope, chain, wire, cable or belt.

The publication CN 1 08 720 266 A relates to a height-adjustable table, in particular an office lifting table. The office lift table is mainly composed of a left column, a right column, a connecting rod, a left sliding column, a right sliding column, a synchro bar, a left synchro mechanism, a right synchro mechanism, a supporting frame, a plate, a left air spring, a right air spring , a handle, a left steel wire rope and a right steel wire rope.

The publication DE 18 08 045 U describes a school blackboard. What is claimed is an arrangement of blackboards that can be raised and lowered on a supporting frame or a supporting frame, each board also being horizontally displaceable and the supporting frames of the supporting frames of two boards being arranged next to one another in such a way that the boards form a double board lying close together can be pushed together and each panel can be moved outwards by about half the panel width.

The object of the present invention is therefore to provide a height positioning device with a support system that includes a gas spring, in which a progression of a gas spring used therein can be compensated for in a simple and convenient manner. It should preferably be possible to design this height positioning device in a compact manner, so that it can be implemented in as space-saving a manner as possible even when it is used, for example, in a panel system is. It was also an object of the invention to provide a panel system incorporating this height positioning device.

The object on which the invention is based is achieved by a height positioning device and a panel system containing this height positioning device according to the independent patent claims. Preferred configurations of the invention are listed in the respective dependent patent claims. Preferred configurations of the height positioning device correspond to preferred configurations of the panel system and vice versa, even if this is not specifically pointed out in each case here.

1. a) einen in einer Höhe H zwischen einer oberen Höhe H₂ und einer unteren Höhe H₁ positionierbaren Körper, z.B. eine Tafel, wobei gilt:
   • untere Höhe H₁ ≤ H ≤ obere Höhe H₂; und
2. b) mindestens ein mit dem Körper gekoppeltes Tragsystem für den Körper, umfassend b1) eine Gasfeder,
   • b2) ein flexibles Zugmittel, und
   • b3) mindestens ein Umlenkelement, um welches das flexible Zugmittel geführt ist,

wobei sich die Gasfeder auf einer ersten Seite S1 des Umlenkelementes befindet und der Körper auf einer zweiten Seite S2 des Umlenkelements, und das flexible Zugmittel eine Rollenkette ist, die aufgrund ihres Gewichts eine Progression der Gasfeder im Wesentlichen ausgleicht, wobei das mindestens eine Umlenkelement ein Kettenrad oder eine Kettenscheibe ist. Eine Kettenscheibe weist im Allgemeinen keine Nabe auf. Vorzugsweise wird die Progression zu mindestens 90 % ausgeglichen. Das genaue Ausmaß eines erforderlichen Ausgleichs der Progression wird von den vorhandenen Reibungskräften abhängen. Besonders bevorzugt wird die Progression aber vollständig ausgeglichen, und wobei die Rollenkette derart ausgestaltet ist, dass bei einer eingestellten Höhe H₂ des Körpers ein über einen Scheitelpunkt P1 eines oberen Umlenkelementes auf dessen zweite Seite S2 verschobener Längenabschnitt L der Rollenkette eine Masse ΔMz hat, die eine Kraft Fz auf die Gasfeder ausübt, welche die Progressionskraft ΔF_P im Wesentlichen ausgleicht, wobei sich die Progressionskraft ΔF_P aus dem Unterschied der Kraft F_I der eingefahrenen Gasfeder zur Kraft F_A der ausgefahrenen Gasfeder ergibt.The invention thus relates to a height positioning device, comprising:

1. a) a body that can be positioned at a height H between an upper height H ₂ and a lower height H ₁ , e.g. a panel, where the following applies:
   • lower height H ₁ ≤ H ≤ upper height H ₂ ; and
2. b) at least one support system for the body coupled to the body, comprising b1) a gas spring,
   • b2) a flexible traction means, and
   • b3) at least one deflection element around which the flexible traction means is guided,

wherein the gas spring is on a first side S1 of the deflection element and the body is on a second side S2 of the deflection element, and the flexible traction means is a roller chain which, due to its weight, essentially compensates for a progression of the gas spring, the at least one deflection element being a chain wheel or a sprocket. A sprocket generally has no hub. Preferably, the progression is compensated for at least 90%. The exact amount of progression compensation required will depend on the frictional forces present. However, the progression is particularly preferably completely compensated for, and the roller chain is designed in such a way that with a set height _H2 of the body, a longitudinal section L of the roller chain that has been displaced over a vertex P1 of an upper deflection element onto its second side S2 has a mass ΔMz that a force Fz exerts on the gas spring, which essentially balances out the progressive force ΔF _P , the progressive force ΔF _P resulting from the difference between the force F _I of the retracted gas spring and the force F _A of the extended gas spring.

The vertex of the deflection element or of the upper deflection element, if there are several deflection elements, separates the first side S1 from the second side S2. Here, the term "gas spring on a first side of the deflection element" is to be understood broadly. If the height positioning device is designed, for example, as a block and tackle with two deflection elements, i.e. the height positioning device has a second, i.e. lower, deflection element which is connected to the first, i.e. upper, deflection element via a gas spring, it applies within the meaning of the invention that the second Deflection element is located with the gas spring on the first side of the deflection element.

In a preferred embodiment, the height positioning device has at least one pylon in or on which the support system b) is arranged. The positioning and the number of pylons will depend in particular on the body to be carried, i.e. its mass, the distribution of its mass and the relevant dimensions.

The gas spring b1) used in the present invention is not limited per se. Gas springs and gas tension springs of different types can be used for this, although their lifting height, dimensions, material and internal structure depend on the area of application and in particular on the height range, ie H ₁ and H ₂ , and the load to be moved vertically. According to the invention, the gas spring is preferably arranged essentially vertically.

In a preferred embodiment of the height positioning device, the gas spring b1) is a gas pressure spring. In this case, a height positioning device is preferred in which the body has a mass in the range from 30 to 100 kg and the extended gas pressure spring with a lifting height h in the range from 30 to 120 cm has a progression in the range from 5 to 15%, preferably in the range from 5 to 10%.

In a further preferred embodiment of the height positioning device according to the invention, a gas tension spring is advantageously used as the gas spring b1).

According to the invention, the body whose height is to be positioned is then located on a second side S2 of the deflection element, and a gas tension spring is located on a first side S1 of the deflection element, which is intended to compensate for the weight of the body or its mass.

If the body is to be positioned over the entire height adjustment path (H) without additional aids (e.g. locking devices), the forces on both sides of the deflection element, namely force F1 on side S2 and force F2 on side S1 over the entire elevation essentially be the same. While the progression should preferably be precisely balanced; due to the always existing frictional forces, however, this can be slightly deviated from.

For the flexible traction device, the part of the mass m of the flexible traction device that is on side S2 adds up to the total force on this side F1, and the part of the flexible traction device on side S1 adds up to F2. Changing the height position H results in a shift in the mass of the flexible traction means, for example from S2 to S1.

If you change the height position of the positioning device, e.g. by moving the body upwards, the gas spring is retracted and its tensile force is progressively reduced. At the same time, the proportion of the flexible traction device on side S1 increases and the proportion of traction device on side S2 decreases accordingly. This means that the gravity of the traction device adds to the total force F2 on side S1 and increases it, and reduces it accordingly on side S2.

According to the invention, a flexible traction device with a suitable mass is therefore selected to connect the body and gas spring to one another, so that the difference in force due to the displacement of the traction device and the difference in force due to the progression of the gas spring cancel out exactly over the entire height adjustment path.

The same principle can be applied to the aforementioned gas pressure spring by using a gas pressure spring and an additional second deflection element as a counteracting force to the gravitational force of the body, e.g. The advantage of such a structure is that the pulley principle doubles the height adjustment path (H) of the body compared to the stroke of the gas spring, with the extension force of the gas pressure spring also having to double in accordance with the weight of the body.

The body, e.g.

In the height positioning device according to the invention, it is particularly preferred that the roller chain is guided in the manner of a block and tackle with a gear ratio of 1:2 and has an upper deflection element and a lower deflection element, of which the upper deflection element has a larger diameter than the lower deflection element. The ratio between the diameters of the upper deflection element and the lower deflection element is not limited per se. However, the diameter of the lower deflection element is expediently chosen such that it is larger than the diameter of a cylinder of the gas spring.

According to the invention, it is preferred that the roller chain has a length-specific mass in the range from 0.8 to 2 kg/m, preferably in the range from 1 to 1.5 kg/m. It is again advantageous if the roller chain has a width in the range from 0.5 to 2 cm, preferably in the range from 0.8 to 1.5 cm. Such a roller chain can not only effectively compensate for the progression, but also contribute significantly to the stability of the height positioning device. Steel is preferably used as the material for the roller chain.

In the height positioning device according to the invention, the roller chain is designed in such a way that with a set height H ₂ of the body, a longitudinal section L of the roller chain that has been displaced over an apex P1 of an upper deflection element to its second side S2 has a mass ΔMz, which exerts a force Fz on the gas spring , which essentially compensates for the progressive force ΔF _P , the progressive force ΔF _P resulting from the difference between the force F _I of the retracted gas spring and the force F _A of the extended gas spring. It must be taken into account here that the displaced mass ΔMz no longer presses on the gas spring located on the first side of the upper deflection element.

1. a) eine in einer Höhe H zwischen einer oberen Höhe H₂ und einer unteren Höhe H₁ positionierbare Tafel, wobei gilt:
   • untere Höhe H₁ ≤ H ≤ obere Höhe H₂ ;
2. b) mindestens ein mit einer Tafel gekoppeltes Tragsystem für die Tafel, umfassend
   • b1) eine Gasfeder,
   • b2) ein flexibles Zugmittel, und
   • b3) mindestens ein Umlenkelement, um welches das flexible Zugmittel (5), im Allgemeinen in der Art eines Flaschenzugs, geführt ist; und
3. c) ein Tafelgestell, wobei die Tafel entlang des Tafelgestells zwischen der unteren Höhenposition H₁ und der höheren Höhenposition H₂ verschiebbar angeordnet ist;

wobei sich die Gasfeder auf einer ersten Seite S1 des Umlenkelementes befindet und die Tafel auf einer zweiten Seite S2 des Umlenkelements, und das flexible Zugmittel eine Rollenkette ist, die aufgrund ihres Gewichts eine Progression der Gasfeder im Wesentlichen ausgleicht, wobei das mindestens eine Umlenkelement ein Kettenrad oder eine Kettenscheibe ist, und wobei die Rollenkette derart ausgestaltet ist, dass bei einer eingestellten Höhe H₂ des Körpers ein über einen Scheitelpunkt P1 eines oberen Umlenkelementes auf dessen zweite Seite S2 verschobener Längenabschnitt L der Rollenkette eine Masse ΔMz hat, die eine Kraft Fz auf die Gasfeder ausübt, welche die Progressionskraft ΔF_P im Wesentlichen ausgleicht, wobei sich die Progressionskraft ΔF_P aus dem Unterschied der Kraft F_I der eingefahrenen Gasfeder zur Kraft F_A der ausgefahrenen Gasfeder ergibt. Hierbei bedeutet „im Wesentlichen“ vorzugsweise zu mindestens 90 % der Progression. Es wurde gefunden, dass aufgrund der vorhandenen Reibungskräfte ein vollständiger Ausgleich der Progression nicht unbedingt erforderlich ist. Das Ausmaß des Ausgleichs der Progression wird im Allgemeinen anhand der vorhandenen Reibungskräfte bestimmt. Dabei ist es erfindungsgemäß bevorzugt, dass der Kraftaufwand für die Verstellung des Tafelsystems, d.h. der Tafeln, < 50 N ist.The subject matter of the invention is also a panel system comprising

1. a) a panel positionable at a height H between an upper height H ₂ and a lower height H ₁ , where:
   • lower height H ₁ ≤ H ≤ upper height H ₂ ;
2. b) comprising at least one support system for the panel coupled to a panel
   • b1) a gas spring,
   • b2) a flexible traction means, and
   • b3) at least one deflection element around which the flexible traction means (5) is guided, generally in the manner of a block and tackle; and
3. c) a panel frame, the panel being slidably arranged along the panel frame between the lower height position H ₁ and the higher height position H ₂ ;

wherein the gas spring is on a first side S1 of the deflection element and the panel on a second side S2 of the deflection element, and the flexible traction means is a roller chain which, due to its weight, essentially compensates for a progression of the gas spring, the at least one deflection element being a chain wheel or a chain disk, and the roller chain being designed in such a way that at one set height H ₂ of the body, a longitudinal section L of the roller chain displaced over a vertex P1 of an upper deflection element on its second side S2 has a mass ΔMz, which exerts a force Fz on the gas spring, which essentially balances out the progressive force ΔF _P , with the Progressive force ΔF _P results from the difference between the force F _I of the retracted gas spring and the force F _A of the extended gas spring. Here, “substantially” preferably means at least 90% of the progression. It was found that due to the frictional forces that are present, complete compensation of the progression is not absolutely necessary. The amount of progression compensation is generally determined by the frictional forces present. It is preferred according to the invention that the force required to adjust the panel system, ie the panels, is <50 N.

The panel frame generally has appropriate rails along which the panel can be moved as precisely as possible. For example, the board can also have suitable rollers to ensure it slides smoothly on the rails. A suitable choice of material and/or coating of the contacting surfaces can also contribute to better guidance of the panel.

A panel system according to the invention will generally have a mass in the range 50 to 150 kg, more preferably in the range 55 to 75 kg. The difference ΔH, which is also referred to as the travel distance, is generally between 80 and 120 cm, more preferably 90 to 110 cm.

The panel system preferably has at least one pylon in or on which a support system b) is arranged. Preferably, the support system is found in the pylon. Panel systems generally have a central panel that is greater in width than height. If a pylon is used, it is therefore generally arranged in the area of the center of the central panel, with the pylon also having to have a sufficient width for reasons of stability. However, such an arrangement is particularly disadvantageous when it comes to a heavy panel system, which may also consist of several individual panels.

In a particularly preferred embodiment of the panel system according to the invention, the panel frame therefore has two pylons, in each of which a support system b) is arranged, so that a load to be borne by each of the support systems b) is halved. Since the support system b) used according to the invention can be configured very narrowly, it can be accommodated in one of the pylons arranged to the left and right of a central panel in a very space-saving manner. These pylons can then also be very narrow.

The pylons, which may be made of aluminum, for example, are generally parallel to each other and aligned vertically.

Instead of pylons, however, other columns, supports, support elements and the like can also be used.

In a preferred embodiment of the panel system, the gas spring b1) is a gas pressure spring. Gas pressure springs are particularly preferred in which a piston rod diameter is 5 to 15 mm and a diameter of the pressure tube is 25 to 60 mm, preferably 30 to 50 mm, and the stroke is 70 to 100 cm. A required lift depends on the height difference ΔH to be overcome, although the lift only has to be half as large when using a block and tackle with a transmission ratio of 1:2.

In a further preferred embodiment of the panel system, the gas spring b1) is a gas pressure spring.

In the panel system according to the invention, the roller chain is designed in such a way that with a set height _H2 of the body, a length section L of the roller chain that has been displaced over a vertex P1 of an upper deflection element on its second side S2 has a mass ΔMz, which exerts a force Fz on the gas spring, which essentially balances out the progressive force ΔF _P , the progressive force ΔF _P resulting from the difference between the force F _I of the retracted gas spring and the force F _A of the extended gas spring. It is preferably the case here that the mass ΔM _Z of the roller chain is the product of the length ΔH=(H ₂ −H ₁ ) and a length-specific mass M _I of the roller chain.

The panel system can be attached to the wall of a building or it can be mobile, i.e. it can be equipped with a movable base frame or another frame that can be moved locally.

The board system according to the invention and the boards used therein are not particularly restricted according to the invention, but are in particular interactive whiteboards and touch displays.

The invention has numerous advantages. With the height positioning device according to the invention, a height adjustment can be made in a simple, convenient and material-friendly manner, even with heavy bodies such as boards. This can be done with little effort. The invention makes it possible for the body or panel to remain immediately and stably at the set height after a user has removed the force. A separate brake can be omitted. The adjustment can be stepless without a separate own lock.

• 1 zeigt in einer seitlichen Schnittansicht eine erste Ausführungsform einer erfindungsgemäßen Höhenpositioniervorrichtung, bei welcher als Gasfeder eine Gaszugfeder eingesetzt wird. Die Gaszugfeder ist in dieser Ansicht vollständig ausgefahren.
• 2 zeigt in einer seitlichen Schnittansicht die in 1 gezeigte erste Ausführungsform einer erfindungsgemäßen Höhenpositioniervorrichtung, bei welcher als Gasfeder eine Gaszugfeder eingesetzt wird. Die Gaszugfeder ist in dieser Ansicht vollständig eingefahren.
• 3 zeigt in einer seitlichen Schnittansicht eine zweite Ausführungsform einer erfindungsgemäßen Höhenpositioniervorrichtung, bei welcher als Gasfeder eine Gasdruckfeder eingesetzt wird. Die Gasdruckfeder ist in dieser Ansicht vollständig ausgefahren.
• 4 zeigt in einer seitlichen Schnittansicht die in 3 gezeigte zweite Ausführungsform einer erfindungsgemäßen Höhenpositioniervorrichtung, bei welcher als Gasfeder eine Gasdruckfeder eingesetzt wird, wobei hier die Gasdruckfeder nur teilweise eingefahren ist.
• 5 zeigt in einer seitlichen Schnittansicht eine erste Ausführungsform eines erfindungsgemäßen Tafelsystems mit einer Höhenpositioniervorrichtung gemäß der in den 3 und 4 gezeigten zweiten Ausführungsform einer Höhenpositioniervorrichtung, bei welcher als Gasfeder eine Gasdruckfeder eingesetzt wird. Die Gasdruckfeder ist in dieser Ansicht vollständig ausgefahren.
• 6 zeigt in einer seitlichen Schnittansicht die in 5 gezeigte erste Ausführungsform eines erfindungsgemäßen Tafelsystems mit einer Höhenpositioniervorrichtung gemäß der in den 3 und 4 gezeigten zweiten Ausführungsform einer erfindungsgemäßen Höhenpositioniervorrichtung, bei welcher als Gasfeder eine Gasdruckfeder eingesetzt wird, wobei hier die Gasdruckfeder vollständig eingefahren ist.
• 7 zeigt in einer seitlichen Schnittansicht eine zweite Ausführungsform eines erfindungsgemäßen Tafelsystems mit einer Höhenpositioniervorrichtung gemäß der in den 3 und 4 gezeigten zweiten Ausführungsform einer erfindungsgemäßen Höhenpositioniervorrichtung, bei welcher als Gasfeder eine Gasdruckfeder eingesetzt wird, wobei hier die Gasdruckfeder vollständig ausgefahren ist.
• 8 zeigt eine perspektivische Ansicht der in 7 gezeigten zweiten Ausführungsform eines erfindungsgemäßen Tafelsystems.

Further details of the invention result from the following description of height positioning devices according to the invention and panel systems according to the invention. Reference is made to the 1 until 8th .

• 1 shows a first embodiment of a height positioning device according to the invention in a lateral sectional view, in which a gas tension spring is used as the gas spring. The gas spring is fully extended in this view.
• 2 shows a side sectional view of the in 1 shown first embodiment of a height positioning device according to the invention, in which a gas spring is used as a gas spring. The gas spring is fully retracted in this view.
• 3 shows a second embodiment of a height positioning device according to the invention in a lateral sectional view, in which a gas pressure spring is used as the gas spring. The gas spring is fully extended in this view.
• 4 shows a side sectional view of the in 3 shown second embodiment of a height positioning device according to the invention, in which a gas spring is used as a gas spring, wherein the gas spring is only partially retracted here.
• 5 shows in a side sectional view a first embodiment of a panel system according to the invention with a height positioning device according to the in the 3 and 4 shown second embodiment of a height positioning device, in which a gas spring is used as a gas spring. The gas spring is fully extended in this view.
• 6 shows a side sectional view of the in 5 shown first embodiment of a panel system according to the invention with a height positioning device according to the in the 3 and 4 shown second embodiment of a height positioning device according to the invention, in which a gas spring is used as a gas spring, wherein the gas spring is fully retracted here.
• 7 shows in a side sectional view a second embodiment of a panel system according to the invention with a height positioning device according to the in the 3 and 4 shown second embodiment of a height positioning device according to the invention, in which a gas spring is used as a gas spring, wherein the gas spring is fully extended here.
• 8th shows a perspective view of FIG 7 shown second embodiment of a panel system according to the invention.

1 shows a first embodiment of a height positioning device 1 according to the invention in a lateral sectional view, in which a gas tension spring 4 is used as the gas spring. The gas spring 4 is fully extended in this view.

In the first embodiment of a height positioning device 1 according to the invention shown here, the body 2, which is to be positioned in its height, is located on a second side S2 of the deflection element 6, here a chain disk, and the pneumatic tension spring is located on a first side S1 of the deflection element 6 4, which is intended to compensate for the weight of the body 2 or its mass. 3 means the carrying system.

The positioning of the body 2 over the entire height adjustment path (H) takes place here without additional aids (e.g. a lock). Therefore, the forces on both sides of the deflection element 6, namely the force F1 on the side S2 and the force F2 on the side S1, are essentially the same over the entire height adjustment path.

For the flexible traction device 5, here a roller chain, the part of the mass m of the flexible traction device 5 that is on side S2 is added to the total force on this side F1, and the part of the flexible traction device 5 on the Side S1 adds up to F2. The change in the height position results in a shift in the mass of the traction means 5, for example from S2 to S1.

If you change the height position of the height positioning device 1, for example by moving the body 2 upwards, the gas spring 4 is retracted and its tensile force is reduced as a result of the progression. At the same time, the proportion of flexible traction means 5 on side S1 increases and the proportion of traction means 5 on side S2 decreases accordingly. This means that the Gravity of the flexible traction means 5 added to the total force F2 on the side S1 and increased, and reduced accordingly on the side S1.

Therefore, a flexible traction device with such a mass was selected here that body 2 and gas tension spring 4 are connected to one another in such a way that the difference in force due to the displacement of the flexible traction element 5 and the force difference due to the progression of the gas tension spring 4 cancel out exactly over the entire height adjustment path.

2 shows a side sectional view of the in 1 shown first embodiment of a height positioning device 3 according to the invention, in which a gas spring 4 is used as a gas spring. The gas spring 4 is fully retracted in this view. Otherwise, the same reference symbols have the same meaning here as in FIG 1 .

3 shows a second embodiment of a height positioning device 1 according to the invention with a support system 3 in a lateral sectional view, in which a gas pressure spring 9 is used as the gas spring. The gas pressure spring 9 is fully extended in this view. The height positioning device 1 is designed here as a block and tackle with a translation of 1:2. In addition to an upper deflection element 6, here a chain pulley, since the flexible tension element 5 is a roller chain here, there is also a lower deflection element 7, which is smaller than the upper deflection element 6. The gas pressure spring 9 here connects the upper deflection element 6 to the lower deflection element 7. 13 here means an apex on the first (upper) deflection element 6, which separates a first side S1 from a second side S2 of the upper deflection element 6.

4 shows a side sectional view of the in 3 shown second embodiment of a height positioning device 1 according to the invention, in which a gas pressure spring 9 is used as a gas spring, which is only partially retracted here. Otherwise, the same reference symbols have the same meaning here as in FIG 3 .

5 shows a first embodiment of a panel system 11 according to the invention with a height positioning device 1 according to the one shown in FIGS 3 and 4 shown second embodiment of a height positioning device 1, in which a gas spring 9 is used as a gas spring. The gas pressure spring 9 is fully extended in this view. 2 here means a panel as a body that can be positioned at a height H. A (first) pylon 8 of the panel frame 12 is shown in this view. Otherwise, the same reference symbols have the same meaning here as in FIG 3 .

6 shows a side sectional view of the in 5 shown first embodiment of a panel system 11 according to the invention with a height positioning device 1 according to the in 3 and 4 shown second embodiment of a height positioning device 1 according to the invention, in which a gas pressure spring 9 is used as a gas spring, the gas pressure spring being fully retracted here. Otherwise, the same reference symbols have the same meaning here as in FIG 3 .

7 shows in a side sectional view an enlarged view of a section of a second embodiment of a panel system 11 according to the invention with a height positioning device 1 according to the in FIGS 3 and 4 shown second embodiment of a height positioning device according to the invention, in which a gas pressure spring 9 is used in the support system 3 as a gas spring, which is fully extended here. In 7 the same reference symbols have the same meaning as in 3 . Added here is a guide element 16, here a guide rail for the panel 4, which can be moved so accurately and easily in height. The upper deflection element 3 is located here in a fastening box 15, which also serves as a fastening element for the gas pressure spring 9 here. 17 means an attachment point for the roller chain 5 on the panel 4. 18 means rollers for facilitating the movement of the panel, which are arranged in the guide rail 16 here.

8th shows a perspective view of FIG 7 shown second embodiment of a panel system 11 according to the invention. Shown here are a first pylon 8 and a second pylon 10, on each of which a guide rail 16 for the vertical displacement of the panel 2 is attached.

reference list

1

height positioning device

2

Body that can be positioned at a height H, e.g. a board

3

support system

4

gas spring, gas spring

5

Flexible traction device, roller chain

6

First (upper) deflection element

7

Second (lower) deflection element

8th

(First) pylon

9

Gas spring, gas spring

10

Second pylon

11

panel system

12

table frame

13

Apex at the first (upper) deflection element

14

Guide element, guide rail for board

15

Fastening box, fastening element

16

guide rail (for board)

17

Attachment point (for the roller chain on the board)

18

Castors (to make it easier to move the board)

Claims (13)

A height positioning device (1) comprising: a) a body (2) positionable at a height H between an upper height H ₂ and a lower height H ₁ , where: lower height H ₁ ≤ H ≤ upper height H ₂ ; and b) at least one support system (3) for the body (2) coupled to the body (2), comprising b1) a gas spring (4, 9), b2) a flexible traction means (5), and b3) at least one deflection element ( 6.7) around which the flexible traction means (5) is guided, characterized in that the gas spring (4.9) is located on a first side S1 of the deflection element (6) and the body (2) on a second side S2 of the deflection element (6), and the flexible traction means is a roller chain (5) which, due to its weight, essentially compensates for a progression of the gas spring (4), the at least one deflection element (6, 7) being a chain wheel or a chain disk, and wherein the roller chain (5) is designed in such a way that when the body (2) is at a set height H ₂ , a longitudinal section L of the roller chain (5) displaced over a vertex P1 (13) of an upper deflection element (6) onto its second side has a mass ΔM _Z has which exerts a force F _Z on the gas spring (4.9), which essentially balances out the progressive force ΔF _P , the progressive force ΔF _P resulting from the difference in the force F _I of the retracted gas spring (4.9) for force F _A of the extended gas spring (4.9). Height positioning device (1) according to claim 1 , characterized in that it has at least one pylon (8) in or on which the support system b) (3) is arranged. Height positioning device (1) according to one of Claims 1 until 2 , characterized in that the gas spring b1) (4,9) is a gas pressure spring (9). Height positioning device (1) according to claim 3 , characterized in that the body (2) has a mass in the range of 30 to 100 kg and the extended gas pressure spring (9) with a lifting height h in the range of 30 to 120 cm has a progression in the range of 5 to 15%. Height positioning device (1) according to one of Claims 1 until 2 , characterized in that the gas spring b1) (4,9) is a gas spring (4). Height positioning device (1) according to one of Claims 1 until 5 , characterized in that the roller chain (5) is guided in the manner of a block and tackle with a gear ratio of 1 : 2 and has an upper deflection element (6) and a lower deflection element (7), of which the upper deflection element (6) has a larger Has diameter than the lower deflection element (7). Height positioning device (1) according to one of Claims 1 until 6 , characterized in that the roller chain (5) has a length-specific mass in the range from 0.8 to 2 kg/m, preferably in the range from 1 to 1.5 kg/m. Height positioning device (1) according to claim 7 , characterized in that the roller chain (5) has a width in the range of 0.5 to 2 cm, preferably in the range of 0.8 to 1.5 cm. A panel system (11) comprising a) a panel (2) positionable at a height H between an upper height H ₂ and a lower height H ₁ , where: lower height H ₁ ≤ H ≤ upper height H ₂ ; b) at least one support system (3) coupled to a panel (2) for the panel (2), comprising b1) a gas spring (4, 9), b2) a flexible traction mechanism (5), and b3) at least one deflection element (6 , 7) around which the flexible traction means (5) is guided; and c) a panel frame (12), the panel (2) being slidably arranged along the panel frame (12) between the lower height position H ₁ and the higher height position H ₂ ; characterized in that the gas spring (4,9) is on a first side S1 of the deflection element (6) and the panel (2) on a second side S2 of the deflection element (6), and the flexible traction means is a roller chain (5). which, due to its weight, essentially compensates for a progression of the gas spring (4), the at least one deflection element (6, 7) being a sprocket or a chain disk, and the roller chain (5) being designed in such a way that at a set height H ₂ of the body (2) a longitudinal section L of the roller chain (5) that is displaced over a vertex P1 (13) of an upper deflection element (6) on its second side has a mass ΔMz, which exerts a force Fz on the gas spring (4,9), which Progressive force ΔF _P essentially compensates, with the progressive force ΔF _P resulting from the difference between the force F _I of the retracted gas spring (4.9) and the force F _A of the extended gas spring (4.9). Table system (11) according to claim 9 , characterized in that the panel frame (12) has at least one pylon (8) in or on which a support system b) (3) is arranged. Table system (11) according to claim 10 , characterized in that the panel frame (12) has two pylons (8,10), in each of which a support system b) is arranged, so that a load to be borne by each of the support systems b) (3) is halved. Panel system (11) according to one of claims 9 until 11 , characterized in that the gas spring b1) (4,9) is a gas pressure spring (9). Table system (11) according to claim 12 , characterized in that the mass ΔM _Z of the roller chain (5) is the product of the length ΔH = (H ₂ - H ₁ ) and a length-specific mass M _I of the roller chain (5).

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