Adjustable lifting system

Abstract

A lifting system is designed to raise and lower a load. The lifting system may include a movable part in sliding engagement with a fixed part. The lifting system may be configured to translate the load coupled to the movable part with respect to the fixed part. The lifting system may further include a counterbalancing mechanism having an arm rotatably coupled to the fixed part and one or more springs coupled to the arm and the fixed part. The arm may be operatively coupled to the movable part by a cable. Upon translation of the movable part, the arm may rotate to deflect the one or more springs to provide a lifting force to counterbalance the weight of the load.

Description

PRIORITY CLAIM

[0001] The present patent application claims priority over the preliminary US patent application with serial number 63 / 476,087 by Ergun, et al., entitled “ADJUSTABLE LIFTING SYSTEM”, filed on December 19, 2022 (Attorney File No. 5983.478PRV), which is hereby incorporated in full by reference into the present document. TECHNICAL AREA

[0002] This document refers generally, but not exclusively, to a lifting system for lifting and balancing a load. BACKGROUND

[0003] Electronic displays, such as computer monitors, tablets, televisions, and the like, and workstations, such as desks, trolleys, wall mounts, and the like, are used in a variety of environments. In some environments, a single electronic display can be used by multiple operators. For example, a television might be used in a conference center where many people use the electronic display throughout the day. In yet another example, a workstation might be used in a shared workspace. A flexible and adaptable workstation can enhance its use in a shared workspace. BRIEF DESCRIPTION OF THE DRAWINGS

[0004] The following drawings illustrate certain embodiments of the present invention and thus do not limit the scope of the invention. The drawings are not to scale and should be used in conjunction with the explanations in the detailed description below. The same reference numerals may describe similar components in different views. The same reference numerals with different letter suffixes may represent different examples of similar components. The drawings show, generally, by way of example, but not as a limitation, various embodiments discussed in this document. Fig. Figure 1 shows a block diagram representation of a positioning device according to an embodiment of the current disclosure. Fig. Figure 2 shows an isometric view of a mobile workstation according to an embodiment of the current disclosure. Fig. Figure 3 shows an isometric view of a wall-mounted workstation according to an embodiment of the current disclosure. Fig. Figure 4 shows an isometric view of a freestanding workstation (e.g., a table or the like) according to an embodiment of the current disclosure. Fig. Figure 5 shows an isometric view of a wall mount for an electronic display according to an embodiment of the current disclosure. Fig. Figure 6 shows a schematic view of a lifting mechanism according to an embodiment of the current disclosure. Fig. Figure 7 shows a schematic view of a lifting mechanism according to a further embodiment of the current disclosure. Fig. Figure 8 shows a schematic view of a lifting mechanism according to yet another embodiment of the current disclosure. Fig. Figure 9 shows a schematic view of a lifting mechanism according to yet another embodiment of the current disclosure. Fig. Figure 10 shows a schematic view of a lifting mechanism according to yet another embodiment of the current disclosure. Fig. Figure 11 shows a schematic view of a lifting mechanism according to yet another embodiment of the current disclosure. Fig. Figure 12 shows a schematic view of a lifting mechanism according to yet another embodiment of the current disclosure. Fig. Figure 13 shows a schematic view of a lifting mechanism according to yet another embodiment of the current disclosure. Fig. Figure 14 shows a schematic view of an amplifier unit according to an embodiment of the current disclosure. Fig. Figure 15 shows a schematic view of the amplifier unit. Fig. 14 in an activated configuration. Fig. Figure 16 shows a graphic representation of the lifting mechanism. Fig. 13 generated lifting force. Fig. Figure 17 shows a schematic view of the lifting mechanism of a freestanding workstation according to an embodiment of the current disclosure. Fig. Figure 18 shows a schematic view of the balancing mechanism. Fig. 17 in a maximum setting. Fig. Figure 19 shows a schematic view of the compensation mechanism. Fig. 17 corresponding to a low position of the work surface. Fig. 20 shows a front view of the freestanding workstation made of Fig. 17 according to an embodiment of the current disclosure. Fig. Figure 21 shows a view from below of the freestanding workstation. Fig. Figure 22 shows a schematic view of a leg arrangement according to an embodiment of the current disclosure. Fig. Figure 23 shows a schematic view of a leg arrangement according to a further embodiment of the current disclosure. Fig. Figure 24 shows a schematic view of a drive pulley unit. OVERVIEW

[0005] The present disclosure relates to devices capable of positioning a load (e.g., an electronic display, a work surface, a platform, or the like) along a lifting or travel range. In some cases, the positioning may include lifting and / or moving the load in a vertical direction. Furthermore, the positioning of the load may counteract the weight of the load and the weight of at least part of the positioning device to assist a user in moving the load.

[0006] In some configurations, the positioning device may include a lifting mechanism for raising and lowering the load. The lifting mechanism typically includes a fixed section for coupling to a superstructure and a moving section for coupling to the load. A sliding mechanism may be coupled to both the fixed and moving sections and may provide a travel range for the moving section relative to the fixed section. The travel range may include a high position and a low position, which in some cases may correspond to a minimum and a maximum height. In the high position, the moving section may be located near the upper end of the fixed section, and in the low position, the moving section may be located near the lower end of the fixed section.

[0007] In some embodiments, the lifting mechanism may include a counterbalancing mechanism. The counterbalancing mechanism may be attached to either the fixed or the moving section, and it may be coupled to both the fixed and moving sections. The counterbalancing mechanism may be configured to generate a lifting force to counteract the combined weight of the load coupled to the moving section (e.g., the weight of the electronic display, the weight of the work surface, or the like) and the weight of the moving section. In some embodiments (e.g., when the counterbalancing mechanism is attached to the moving section), the lifting force may also counteract the weight of the counterbalancing mechanism itself. DETAILED DESCRIPTION

[0008] The following detailed description is exemplary and is not intended to limit the scope of protection, applicability, or configuration of the invention in any way. Rather, the following description provides some practical illustrations for implementing exemplary embodiments of the present invention. For selected elements, examples of constructions, materials, dimensions, and manufacturing processes are given, and all other elements utilize what is known to a person skilled in the art in the field of the invention. Skilled workers will recognize that many of the given examples have a multitude of suitable alternatives.

[0009] Fig. Figure 1 shows a block diagram of a positioning device 10 according to an embodiment of the present disclosure. The positioning device 10 can either be a mobile workstation 160 (in Fig. 2 shown), a wall-mounted workstation 170 (in Fig. 3 shown), a freestanding workstation 180 (in Fig. 4 shown), a wall mounting arrangement 190 (in Fig. 5 shown) or the like. The positioning device 10 may include a lifting mechanism 100 coupled to a structure 140, including but not limited to a wall, a rolling base, a cabinet, or the like.

[0010] The lifting mechanism 100 can include a fixed section 110 and a movable section 120. The fixed section 110 can be stationary relative to the structure 140. The movable section 120 can be movably (e.g., sliding or the like) coupled to the fixed section 110. In some embodiments, one or more loads 130 (e.g., an electronic display, a work surface, a platform, or the like) can be coupled to the movable section 120. The lifting mechanism 100 can be configured to raise and lower the one or more loads 130 relative to the structure 140.

[0011] The lifting mechanism 100 can also include a balancing mechanism 150 coupled between the stationary section 110 and the movable section 120. The balancing mechanism 150 can be adapted to counteract a portion of the combined weight from the one or more loads 130 and the weight of the movable section 120.

[0012] The Fig. Figures 2 to 5 illustrate various applications of a positioning device 10 according to some embodiments of the present disclosure. The Fig. The embodiments shown in sections 2-5 each include different components of the components described in previous sections with regard to Fig. 1 described positioning device 10.

[0013] Fig. Figure 2 shows an isometric view of a mobile workstation 160 according to an embodiment of the present disclosure. The mobile workstation 160 can include a lifting mechanism 100 with a fixed section 110 (e.g., a support column 161) and a movable section 120 (e.g., a movable bracket 162). The movable bracket 162 can be in sliding engagement with the support column 161. The support column 161 can generally extend vertically from a first section 161A to a second section 161B. The support column 161 can be coupled to a superstructure 140 (e.g., a rolling base 163) near the first section 161A, and the movable bracket 162 can be located near the second section 161B of the support column 161. One or more loads 130 (e.g. a platform 164 or the like) can be coupled to the movable support 162.The platform 164 can include a work surface 165, a display holder 166, a keyboard tray, and other components. The display holder 166 can hold an electronic display 167 above the work surface 165. The lifting mechanism 100 can be used to raise and lower the platform 164 and other components coupled to the platform 164.

[0014] The lifting mechanism 100 of the mobile workstation 160 made of Fig. 2 can also include a balancing mechanism 150. The balancing mechanism 150 can be located inside the support column 161. The balancing mechanism 150 can be coupled between the support column 161 and the movable bracket 162. The balancing mechanism 150 can generate a lifting force to counteract a combined weight of one or more loads 130 (e.g., the weight of the platform 164, the display holder 166, the electronic display 167, or the like) and the weight of a section of the lifting mechanism 100 (e.g., the weight of the movable bracket 162, or the like).

[0015] Fig. Figure 3 shows an isometric view of a wall-mounted workstation 170 according to an embodiment of the present disclosure. The wall-mounted workstation 170 can include a lifting mechanism 100 with a fixed section 110 (e.g., support column 171) and a movable section 120 (e.g., movable bracket 172). The movable bracket 172 can be in sliding engagement with the support column 171. The support column can be coupled to a structure 140 (e.g., a wall 173). One or more loads 130 (e.g., a work surface 174 or the like) can be coupled to the movable bracket 172. In some embodiments, the one or more loads 130 can include one or more other components coupled to the work surface 174 (e.g., an electronic display, a keyboard, a printer, or the like).The lifting mechanism 100 can be set up to lift and lower one or more loads 130.

[0016] The lifting mechanism 100 of the wall-mounted workstation 170 made of Fig. 3 can also include a balancing mechanism 150. The balancing mechanism 150 can be located inside the support column 171. The balancing mechanism 150 can be coupled between the support column 171 and the movable bracket 172. The balancing mechanism 150 can generate a lifting force to counteract a combined weight of one or more loads 130 (e.g., the weight of the work surface 174 and other components coupled to the work surface 174) and the weight of a section of the lifting mechanism 100 (e.g., the weight of the movable bracket 172 or the like).

[0017] Fig. Figure 4 shows an isometric view of a freestanding workstation 180 (e.g., a table or the like) according to an embodiment of the present disclosure. The freestanding workstation 180 may have a lifting mechanism 100 including one or more leg assemblies 181 (e.g., a first leg assembly 181A and a second leg assembly 181B) that support one or more loads 130 (e.g., a work surface 175 and one or more other components coupled to the work surface 175). The one or more leg assemblies 181 may include a fixed section 110 (e.g., a first element 183) and a movable section 120 (e.g., a second element 184 and a third element 185). The first element 183 may generally extend vertically from a first section 183A to a second section 183B.The first element 183 can be coupled to a foot 186 near the first section 183A and movably (e.g., extendably) engaged with the second element 184 and the third element 185 near the second section 183B. The foot 186 can be positioned above a superstructure 140 (e.g., a base 187). The second element 184 or the third element 185 of the one or more leg assemblies 181 can be coupled to a bottom surface 188 of the work surface 175, as shown in [reference]. Fig. Figure 4 illustrates this. In some embodiments, a frame 189 can be coupled to the underside 188 of the work surface 175. The frame 189 can be adapted to accommodate the second element 184 or the third element 185 of the one or more leg assemblies 181 in order to couple the one or more leg assemblies 181 to the work surface 175.

[0018] The one or more leg assemblies 181 may be height-adjustable in some embodiments. The one or more leg assemblies 181 may include one or more telescopic elements (e.g., the second element 184 and the third element 185). The one or more telescopic elements may be adapted to move relative to the first element 183 in order to adjust the height of the one or more leg assemblies 181. The one or more leg assemblies 181 may also include a height adjustment mechanism 182.

[0019] The height adjustment mechanism 182 can be incorporated inside one or more leg assemblies 181 (e.g., the height adjustment mechanisms 503 or 524 of the Fig. 22-23). ​​The height adjustment mechanism 182 can be coupled to the first element 183, the second element 184, and the third element 185 of the one or more leg assemblies 181. The height adjustment mechanism 182 can be configured to adjust the height of the one or more leg assemblies 181. In some embodiments, the height adjustment mechanism 182 can include a synchronizing rod (e.g., the synchronizing rod 430 from Fig. 17) to synchronize a movement of the first leg assembly 181A with a movement of the second leg assembly 181B.

[0020] The lifting mechanism 100 of the freestanding workstation 180 made of Fig. 4 can also include a balancing mechanism 150. In some embodiments, the balancing mechanism 150 can be coupled to the underside 188 of the work surface 175 (e.g., coupled to the frame 189). The balancing mechanism 150 can be operatively coupled to the height adjustment mechanism 182. The balancing mechanism 150 can generate a lifting force to counteract a combined weight of one or more loads 130 (e.g., the weight of the work surface 175 and other components coupled to the work surface 175, such as the frame 189 and the balancing mechanism 150, or the like) and the weight of a section of the lifting mechanism 100 (e.g., the weight of the second element 184 and the third element 185, or the like).

[0021] Fig. Figure 5 shows an isometric view of a wall-mounting arrangement 190 for mounting an electronic display 191 on a wall 192 according to an embodiment of the present disclosure. For clarity, the electronic display 191 is shown in Fig. Figure 5 is shown transparently. The wall-mounting arrangement 190 can include a lifting mechanism 100 with a fixed section 110 (e.g., a support column 193) and a movable section 120 (e.g., a movable bracket 194). The support column 193 can be coupled to the wall 192, and the movable bracket 194 can slidably engage with the support column 193. A display bracket 195 can be coupled to the movable bracket 194. One or more loads 130 can be coupled to the movable bracket 194 (e.g., the display bracket 195 can be adapted to hold the electronic display 191). The lifting mechanism 100 can be configured to raise and lower the electronic display 191 relative to the wall 192.

[0022] The lifting mechanism 100 of the wall mounting arrangement 190 made of Fig. 5 can also include a balancing mechanism 150. The balancing mechanism 150 can be located inside the support column 193. The balancing mechanism 150 can be coupled between the support column 193 and the movable bracket 194. The balancing mechanism 150 can generate a lifting force to counteract a combined weight of the load 130 (e.g., the electronic display 191 or the like) and a section of the lifting mechanism 100 (e.g., the weight of the movable bracket 194 and the display holder 195 or the like).

[0023] In the in the Fig. In the applications shown in Figures 2-5, it is evident that the load 130 coupled to the movable section 120 (e.g., the platform, the electronic display, the work surface, or the like) can have a wide range of weights. This weight range can depend on the make and model of the equipment (e.g., the electronic display, or the like) and the material used in its manufacture (e.g., the material of the work surface, the platform, or the like). In some embodiments, the force generated by the lifting mechanism 100 can be adjusted to accommodate this wide range of weights. Adjusting the lifting force can be accomplished by various methods, including, but not limited to, adjusting the tensile force of an energy storage element incorporated in the balancing mechanism (e.g., by adjusting the spring force of one or more springs 314 of the balancing mechanism 350). Fig. 13), an adjustment of an angle of an energy storage element incorporated in the balancing mechanism (e.g. by adjusting the spring angle 227 between the gas spring 221 and the arm 204 of the balancing mechanism 350) Fig. 13), or the like. In other configurations, one or more adjustment methods for setting the lifting force can be used simultaneously, as in Fig. 13 illustrated.

[0024] Fig. Figure 6 shows a schematic view of a lifting mechanism 100 according to an embodiment of the present disclosure. The lifting mechanism 100 can have a fixed section 110 and a movable section 120 coupled to the fixed section 110 in a manner that is movably (e.g., displaceable or the like). The fixed section 110 can be coupled either directly or indirectly to a structure 140 (e.g., a wall, a rolling base, or the like). One or more loads 130 (e.g., an electronic display, a platform, a work surface, or the like) can be coupled either directly or indirectly to the movable section 120. The movable section 120 can move relative to the fixed section 110 over a travel range 201. Thus, in some embodiments, a positioning device 10 (in the Fig. 2-5 shown) including the lifting mechanism 100 (in Fig. (Figure 6 illustrates) the one or more loads 130 relative to the structure 140 by moving the movable section 120 relative to the stationary section 110. In these embodiments, the movable section 120 can be configured to move between a high position 201A and a low position 201B along the travel range 201.

[0025] In some embodiments, the lifting mechanism 100 may include a compensating mechanism 150. The compensating mechanism 150 may be coupled to the stationary section 110, and the compensating mechanism 150 may be operatively coupled to the movable section 120, as shown in Fig. Figure 6 illustrates. The balancing mechanism 150 can generate a lifting force 203 to counteract a combined weight 205 from the one or more loads 130 coupled to the movable section 120 and the weight of the movable section 120.

[0026] In other embodiments, the compensating mechanism 150 can be coupled to the movable section 120 (e.g., coupled to the work surface 402, as in Fig. 20 illustrated). In such embodiments, the lifting force can counteract the weight of the balancing mechanism 150 in addition to the weights of the one or more loads 130 and the movable section 120.

[0027] In some embodiments, the compensating mechanism 150 can include an arm 204 and an adjustment mechanism 206, as in Fig. Figure 6 illustrates this. The arm 204 can have a first section 204A and a second section 204B. The arm 204 can extend along an arm axis 207 between the first section 204A and the second section 204B of the arm 204. The arm 204 can be made of an engineering material, including but not limited to a stamped sheet, a tube, a die-cast bracket, a rod, or the like. The arm 204 can be rotatably coupled to the stationary section 110 at a first joint 208 near the first section 204A. The arm axis 207 can be aligned at an arm angle 209 with respect to the stationary section 110. The arm 204 can be arranged to rotate in a first direction 210 around the first joint 208 in such a way that the arm angle 209 can increase as the movable section 120 moves along the travel range 201 from the high position 201A to the low position 201B.

[0028] The adjusting mechanism 206 can include a bracket 212, a sliding element 214, and a screw 216. The bracket 212 can be fixedly attached to the stationary section 110 away from the first joint 208. The sliding element 214 can engage slidably in the bracket 212. The screw 216 can be coupled to the bracket 212 and engage in threaded engagement with the sliding element 214. The sliding element 214 can be configured to move relative to the bracket 212 when the screw 216 is turned.

[0029] The lifting mechanism 100 can also include an energy storage element 220. In one embodiment, the energy storage element 220 can consist of a gas spring 221. In other embodiments, the energy storage element 220 can be a compression spring, a tension spring, a rubber band, or the like. The energy storage element 220 can be rotatably coupled to the arm 204 at a second joint 222 and rotatably coupled to the adjustment mechanism 206 at a third joint 224. The second joint 222 can be located between the first section 204A and the second section 204B of the arm 204, and the third joint 224 can be located on the sliding element 214, as shown in Fig. 6 illustrates.

[0030] The third joint 224 can be configured to move towards or away from the first joint 208 to establish a first distance 223 between the first joint 208 and the third joint 224 when the sliding element 214 moves relative to the support 212. The second joint 222 can be configured to move towards (e.g., when the arm 204 rotates in the first direction 210) or away from (e.g., when the arm 204 rotates in a second direction opposite to the first direction 210) the third joint 224 to establish a second distance 228 between the second joint 222 and the third joint 224 when the arm 204 rotates relative to the fixed section 110.

[0031] The energy storage element 220 (e.g., the gas spring 221) can be configured to generate a force (e.g., a gas spring force 226). The gas spring force 226 can act between the second joint 222 and the third joint 224, and the gas spring force 226 can bias the arm 204 for rotation in the second direction opposite to the first direction 210. Since the second distance 228 decreases when the arm 204 rotates in the first direction 210, the gas spring force 226 can increase.

[0032] The energy storage element 220 (e.g., the gas spring 221) can be oriented at an angle (e.g., a spring angle 227) to the arm 204. The spring angle 227 can decrease when the sliding element 214 moves toward the first joint 208 to reduce the first distance 223. The spring angle 227 can also decrease when the arm 204 rotates in the first direction 210. In an extreme orientation, the third joint 224 can be located close to the first joint 208 in a minimum setting configuration. The spring angle 227 can increase when the sliding element 214 moves away from the first joint 208 to increase the first distance 223. In the other extreme orientation, the third joint 224 can be located furthest from the first joint 208 in a maximum setting configuration. The spring angle 227 can be larger in the maximum setting configuration than the spring angle 227 in the minimum setting configuration.The gas spring force 226 can be proportional to the spring angle 227, so that the gas spring force 226 in the maximum setting configuration can be greater than the gas spring force 226 in the minimum setting configuration.

[0033] The lifting force 203 provided by the balancing mechanism 150 can be directly proportional to the gas spring force 226. Thus, the balancing mechanism 150 can provide a greater lifting force 203 in the maximum setting configuration than the lifting force 203 in the minimum setting configuration, as shown in Fig. Figure 16 illustrates this. In one embodiment, the third joint 224 can be located anywhere between the minimum adjustment configuration and the maximum adjustment configuration.

[0034] The energy storage element 220 (e.g., the gas spring 221) can extend between the second joint 222 and the third joint 224. When the arm 204 rotates about the first joint 208, the second distance 228 between the second joint 222 and the third joint 224 can change, resulting in a changing tension (or compression) on the energy storage element 220. As the tension force of the energy storage element 220 changes, the energy storage element 220 can exert a variable force on the arm 204 at the second joint 222. For example, when the arm 204 rotates in the first direction 210, the second distance 228 decreases, compressing the gas spring 221 and thus increasing the gas spring force 226. Similarly, when the arm 204 is rotated in the second direction opposite to the first direction 210, the second distance 228 increases, causing the gas spring 221 to extend and thus reducing the gas spring force 226.

[0035] In some embodiments, the lifting mechanism 100 can also include a cable 230. The compensating mechanism 150 can be operatively coupled to the movable section 120 via the cable 230. The cable 230 can run from a first section 230A to a second section 230B. The first section 230A can be coupled to the arm 204 at a first locking point 231, and the second section 230B can be coupled to the movable section 120 at a second locking point 232. In some embodiments, the first joint 208 and the first locking point 231 can be located on the arm axis 207, and the second joint 222 can also be located on the arm axis 207 between the first joint 208 and the first locking point 231. In other embodiments, the second joint 222 can be offset in a transverse direction relative to the arm axis 207, as in Fig. Figure 6 illustrates this. In other embodiments, the first locking device 231 can be located between the first joint 208 and the second joint 222. The rope 230 can be an elongated element made of an engineering material, including but not limited to a steel rope, a polymer pull rope, a chain, a cable, a cord, or the like.

[0036] In some embodiments, the lifting mechanism can also include a deflection pulley 234. The deflection pulley 234 can be rotatably coupled to the stationary section 110. The rope 230 can be routed around the deflection pulley 234 between the first section 230A and the second section 230B. The first section 230A of the rope 230 can be oriented at a rope angle 236 to the arm 204, as shown in Fig. Figure 6 illustrates this. The rope angle 236 can be defined by the position of the pulley 234 and the first locking mechanism 231. The rope angle 236 can change when the arm 204 rotates about the first joint 208, thus changing the orientation of the first locking mechanism 231 relative to the pulley 234. The pulley 234 can deflect the rope 230 such that the second section 230B of the rope 230 can run between the pulley 234 and the movable section 120 in a direction parallel to a direction of movement 237 of the movable section 120.

[0037] A force generated by the energy storage element 220 (e.g., the gas spring force 226) can act on the arm 204 at the second joint 222. The gas spring force 226 can exert a first clockwise torque 238 on the arm. A rope force 239, supported by the rope 230, can act on the arm 204 at the first locking point 231. The rope force 239 can exert a second counterclockwise torque 240 on the arm 204. The first torque 238 and the second torque 240 can be equal to maintain the arm 204 in equilibrium. From the equilibrium of the arm 204, the rope force 239 for a gas spring force 226 at a specific position of the arm 204 (e.g., at an arm angle 209) can be calculated. The rope force 239 can be equal to the lifting force 203. The rope force 239 (or the lifting force 203) can (e.g. due to the change in the spring angle 227 and the change in the rope angle 236) despite the variable gas spring force 226 (e.g.due to the variable second distance 228) during the rotation of the arm 204, it shall be essentially constant as the movable section 120 moves along the travel range 201.

[0038] Part of the force generated by the energy storage element 220 (e.g., the gas spring force 226) can be assisted by the cable 230 (e.g., a cable force 239 defined by torque compensation, as discussed in previous sections). The cable force 239 can define the lifting force 203. The lifting force 203 can counteract at least part of the combined weight 205 coupled to the movable section 120 (e.g., the combined weight of the movable section 120 and the weight of one or more loads 130 coupled to the movable section 120).

[0039] Fig. Figure 7 shows a schematic view of a lifting mechanism 100 according to a further embodiment of the present disclosure. In some embodiments, the lifting mechanism 100 may include a roller 242. The roller 242 may be coupled to the arm 204 near the second section 204B of the arm 204. The compensating mechanism 150 may be operatively coupled to the movable section 120 via a cable 244. The cable 244 may extend between a first section 244A and a second section 244B. The first section 244A may be coupled to the stationary section 110 at a first locking point 246, and the second section 244B may be coupled to the movable section 120 at a second locking point 247. The rope 244 can be routed around the pulley 242 and the deflection pulley 234 between the first section 244A and the second section 244B.Part of the gas spring force 226 generated by the gas spring 221 can be supported by the rope 244 to define a lifting force 203, as discussed below.

[0040] The rope 244 can include a first segment 248 and a second segment 249 between the first section 244A and the second section 244B, as shown in Fig. Figure 7 illustrates this. The first segment 248 can run between the first locking device 246 and the roller 242, and the second segment 249 can run between the roller 242 and the movable section 120. The first segment 248 can be aligned with the arm 204 at a first rope angle 251, and the second segment 249 can be aligned with the arm 204 at a second rope angle 252. The first rope angle 251 and the second rope angle 252 can change when the arm 204 is rotated about the first joint 208.

[0041] The second segment 249 can be deflected around the pulley 234 before it can be coupled to the movable section 120. The second section 244B of the rope 244 can run parallel to the direction of movement 237 of the movable section 120. As the movable part 120 moves along the travel range 201, the arm 204 can rotate (e.g., in a first direction 210), and a portion of the first segment 248 can move over the pulley 242 to the second segment 249 to allow the movement of the movable part 120. The first segment 248 of the rope 244 can support a first rope force 254, and the second segment 249 of the rope 244 can support a second rope force 256. The first rope force 254 can be equal to the second rope force 256, and a lifting force 203 can be equal to the second rope force 256.The lifting force 203 can act on the movable section 120 to counteract at least part of the combined weight 205 from the movable section 120 and the weight of one or more loads 130 coupled to the movable section 120.

[0042] The gas spring force 226 can act on the arm 204 at the second joint 222 to apply a first clockwise torque 238 to the arm 204, as shown in Fig. Figure 7 illustrates this. The first rope force 254 and the second rope force 256 can act on the arm 204 via the pulley 242 to apply a second counterclockwise torque 240 to the arm 204. The first torque 238 and the second torque 240 can be equal to keep the arm 204 in equilibrium. From the equilibrium of the arm 204, the first rope force 238 and the second rope force 240 can be calculated at any position of the arm 204 (e.g., at any arm angle 209, taking into account the first rope angle 251 and the second rope angle 252 at that point of the arm angle 209). The first rope force 254 and the second rope force 256 (and thus the lifting force 203) can remain essentially the same despite the changing gas spring force 226 due to the change in the first rope angle 251, the second rope angle 252 and the spring angle 227.

[0043] The Fig. Figures 8-12 show schematic views of lifting mechanisms 101, 102, 103 according to some embodiments of the present disclosure. The lifting mechanism 101, 102, 103 can have a fixed section 110 and a movable section 120. The fixed section 110 can extend between a first section 110A and a second section 110B. The fixed section 110 can be attached to a structure 140 (e.g., a wall 173 as shown in Figure 1). Fig. 3 shown, a rolling base 163 as in Fig. 2 shown, or the like) are attached, and one or more loads 130 (e.g. an electronic display 167 or a platform 164 as shown in Fig. 2 shown, a work surface 174 as in Fig. 3 shown, or the like) can be coupled to the movable section 120. The movable section 120 is configured to move relative to the stationary section 110 along a travel range 201 to allow height adjustment for the one or more loads 130 coupled to the movable section 120. The movable section 120 can move between a high position 201A, in which the movable section 120 is close to the first section 110A, and a low position 201B, in which the movable section 120 is close to the second section 110B. Various aspects of the lifting mechanisms 100, which were discussed in previous sections with regard to the Fig. 6-7 described, can be found in the Fig. Configurations 8-12 shown are used.

[0044] In some embodiments, one or more guide elements 260 can be coupled between the stationary section 110 and the movable section 120. The one or more guide elements 260 can be adapted to guide the movable section 120 as it moves relative to the stationary section 110. The one or more guide elements 260 can be slides (e.g., a first slide 261 and a second slide 262, as in Fig. 10), include sliding elements, rollers or the like, but are not limited to them.

[0045] The lifting mechanisms 101, 102, 103 of the Fig. 8-10 can each include balancing mechanisms 151, 152, 153. The balancing mechanisms 151, 152, 153 can be similar to the balancing mechanism 150. Fig. 7. The balancing mechanisms 151, 152, 153 can be positioned in different orientations with respect to the fixed section 110 and the movable section 120, but one or more aspects of the balancing mechanism 150 from Fig. 7 can be applied to the balancing mechanisms 151, 152, 153 of the Fig. 8-10 apply. In some embodiments, the compensating mechanisms 151, 152, 153 may be located near the first section 110A of the stationary part 110, as shown in the Fig. 8-10 illustrates. In further embodiments, the balancing mechanism can be located near the second section 110B of the stationary part 110.

[0046] In some embodiments, the first joint 208, located near the first section 204A of the arm 204, can be positioned away from the first section 110A of the fixed section 110, and the arm 204 can extend from the first joint 208 towards the first section 110A of the fixed section 110, with the second section 204B of the arm 204 being positioned near the first section 110A of the fixed section 110, as shown in the Fig. 8-9 illustrates this. In other configurations, the first joint 208 can be placed near the first section 110A of the fixed section 110, and the arm 204 can extend from the first joint 208 away from the first section 110A of the fixed section 110, with the second section 204B of the arm 204 being placed near the center of the fixed section 110, as shown in Fig. Figure 10 illustrates this. It can be seen that the balancing mechanism can be positioned in many other orientations with respect to the fixed section 110 and the movable section 120. In each configuration, the balancing mechanism can be operatively coupled to the movable section 120 via a cable 244. The arm 204 can rotate in a first direction 210 when the movable section 120 moves from the high position 201A towards the low position 201B. The energy storage element 220 can bias the arm 204 to rotate in a second direction opposite to the first direction 210.

[0047] The Fig. Figures 11-12 are schematic views of the lifting mechanisms 104, 105 according to some embodiments of the present disclosure. In some embodiments, the lifting mechanisms 104, 105 may include a transition disk arrangement 264. The transition disk arrangement 264 may be located near the first section 110A of the stationary section 110, as shown in the Fig. Figures 11-12 illustrate the following. The transition disk assembly 264 can be rotatably coupled to the stationary section 110. The transition disk assembly 264 can include a first disk 265 and a second disk 266. The first disk 265 can have a larger diameter than the second disk 266. The first disk 265 can be coaxial with the second disk 266, and these can rotate together about a common axis 267 with respect to the stationary section 110.

[0048] In some embodiments, the compensating mechanism 154 may be located near the second section 110B of the stationary section 110, as shown in Fig. Figure 11 illustrates this, and in other embodiments the balancing mechanism 155 may be located near the first section 110A of the fixed section 110, as shown in Fig. Figure 12 illustrates the lifting mechanisms 104, 105, which can include a first rope 268 and a second rope 269. One end of the first rope 268 can be coupled to the fixed section 110 at a first locking device 246. The first rope 268 can be guided around the guide pulley 242 and optionally around the deflection pulley 234, and the other end of the first rope 268 can be coupled to the second pulley 266 of the transition pulley assembly 264. One end of the second rope 269 can be coupled to the movable section 120 at a second locking device 247, and the other end of the second rope 269 can be coupled to the first pulley 265 of the transition pulley assembly 264. The second rope 269 can be wound around the first pulley 265 when the movable section 120 is in the high position 201A (e.g., when the movable section 120 is near the first section 110A of the fixed section 110).When the movable section 120 moves relative to the stationary section 110 within the travel range 201, the movable section 120 can pull on the second cable 269 to rotate the transition pulley assembly 264 clockwise. As the transition pulley assembly 264 rotates clockwise, the first cable 268 can wrap around the second pulley 266, allowing the arm 204 to rotate in a first direction 210 about a first joint 208.

[0049] The energy storage element 220 (e.g. the gas spring 221) of the Fig. 8-12 can be coupled between the arm 204 and the adjustment mechanism 206. The energy storage element 220 can apply a force (e.g., the gas spring force 226) to the arm 204, biasing it in a direction opposite to the first direction 210. From the equilibrium of the arm 204, the spring force 226 can be converted into a lifting force 203, as discussed in previous sections. If the lifting mechanism 100 includes a transition disc arrangement 264, as described in the Fig. As illustrated in Figures 11-12, the lifting force 203 can be adjusted by the ratio of the radius of the second disc 266 to the radius of the first disc 265. The lifting force 203 can act on the movable section 120 to counteract a portion of the combined weight 205 consisting of one or more loads 130 coupled to the movable section 120 and the weight of the movable section 120 itself.

[0050] Fig. Figure 13 shows a schematic view of a lifting mechanism 300 according to yet another embodiment of the present disclosure. The lifting mechanism 300 from Fig. 13 can select one or more aspects of the lifting mechanism 100 from Fig. 7. The lifting mechanism 300 can include a fixed section 110 coupled to a superstructure 140, a movable section 120 adapted to receive one or more loads 130, and a balancing mechanism 350. The movable section 120 can be configured to move relative to the fixed section 110 along a travel range 201 between a high position 201A and a low position 201B. The movable section 120 can provide a height adjustment for the one or more loads 130 coupled to the movable section 120 relative to the superstructure 140.

[0051] In some embodiments, the balancing mechanism 350 can include an arm 204, a first energy storage element 302, an adjustment mechanism 206, and an amplifier unit 304. The arm 204 can be rotatably coupled to the stationary section 110 about a first joint 208. The arm 204 can be operatively coupled to the movable section 120 via a cable 244. The cable 244 can be coupled to the stationary section 110 at a first locking point 246 and to the movable section 120 at a second locking point 247. The cable 244 can be routed around the roller 242 and the deflection roller 234 between the first locking point 246 and the second locking point 247, as shown in Fig. Figure 13 illustrates that the arm 204 can be configured to rotate in a first direction 210 when the movable section moves from the high position 201A to the low position 201B.

[0052] The adjustment mechanism 206 can include a first bracket 310 and a sliding element 214. The first bracket 310 can be attached to the bracket 212. Fig. 7. The first bracket 310 can be fixedly attached to the stationary section 110. The sliding element 214 can engage slidably in the first bracket 310. The adjusting mechanism 206 can include a first screw 311. The first screw 311 can be rotatably coupled to the first bracket 310 and engage in threaded engagement with the sliding element 214.

[0053] The first energy storage element 302 can be coupled at one end to the arm 204 via a second joint 222 and at the other end to the sliding element 214 via a third joint 224. The first energy storage element 302 can be a gas spring 221, a tension spring, a compression spring, or the like. The first energy storage element 302 can indirectly define part of a lifting force 203, as described in previous sections. The first screw 311 is configured to displace the sliding element 214 relative to the first support 310 in order to change a spring angle 227 between the first energy storage element 302 (e.g., gas spring 221) and the arm 204.

[0054] The amplifier unit 304 can be coupled at one end to the fixed section 110 and rotatably coupled at the other end to the arm 204 at a fourth joint 312, as shown in Fig. Figure 13 illustrates that the amplifier unit 304 can apply an additional force to the arm 204 to increase the lifting force 203, as will be shown in the following sections.

[0055] The amplifier unit 304 can include a second energy storage element 306. The second energy storage element 306 can include a gas spring, a tension spring, a compression spring, or the like. In some embodiments, the second energy storage element 306 can be selectively activated to enable the lifting of heavier loads.

[0056] In some embodiments, the second energy storage element 306 can include one or more springs 314 (e.g., one or more tension springs). The one or more springs 314 can be coupled at one end to a first spring plate 315 and at the other end to a second spring plate 316. The first spring plate 315 can be coupled to the stationary section 110, and the second spring plate 316 can be rotatably coupled to the arm 204 at the fourth joint 312.

[0057] In some embodiments, the compensating mechanism 350 may also include a second bracket 318. The second bracket 318 may be fixedly attached to the stationary section 110. A second screw 319 may be rotatably coupled to the second bracket 318 and engage in threaded engagement with the first spring plate 315. The second screw 319 may be configured to displace the first spring plate 315 along an axis of the second screw 319 when the second screw 319 is rotated, thus allowing adjustment of a spring force of one or more springs 314.

[0058] A first force 321 generated by the first energy storage element 302 (e.g. similar to the gas spring force 226 from Fig. 7) and a second force 322 generated by the second energy storage element 306 (e.g., a force generated by one or more springs 314) can exert a first torque 325 on the arm 204 in a second direction opposite to the first direction 210. A first rope force 254 and a second rope force 256, transmitted respectively by the first segment 248 and the second segment 249 of the rope 244, can exert a second torque 326 on the arm 204 in the first direction 210. The first rope force 325 and the second rope force 326 can be equal. To keep the arm 204 in equilibrium, the first torque 325 can be equal to the second torque 326, and thus the first rope force 325 and the second rope force 326 can be calculated from the equilibrium of the arm 204. The second rope force 326 can be equal to the lifting force 203.The lifting force 203 can counteract at least part of the combined weight 205 that is coupled to the movable section 120.

[0059] The Fig. Figures 14 to 15 show schematic views of an amplifier unit 304 according to an embodiment of the present disclosure. The amplifier unit 304 can include a first tube 331, a second tube 332, and a rod 333. The first tube 331, the second tube 332, and the rod 333 can be concentric around an amplifier axis 335.

[0060] The first tube 331 can extend between a first end 331A and a second end 331B. The first end 331A of the first tube 331 can be closed, and a first ring 336 can be fixedly attached to the first end 331A. The first tube 331 can be rotatably coupled to the fixed section 110 at the first ring 336 (e.g., rotatably with the second support 318). Fig. 13 coupled). The second end 331B of the first tube 331 can be open, and the second end 331B can be adapted to receive the second tube 332.

[0061] The second tube 332 can extend between a first end 332A and a second end 332B. The first end 332A of the second tube 332 can be adapted to be inserted into the first tube 331 through the opening at the second end 331B of the first tube 331. The second end 332B of the second tube 332 can be closed, and an opening 337 can be formed at the second end 332B. The second tube 332 can be located at least partially inside the first tube 331. The second tube 332 can slidably engage with the first tube 331, and the second tube 332 can be configured to slide relative to the first tube 331 along the amplifier axis 335.

[0062] The rod 333 can extend between a first end 333A and a second end 333B. The rod 333 can be inserted into the second tube 332 through the opening 337 located at the second end 332B of the second tube 332. The rod 333 can be located at least partially inside the second tube 332. The first end 333A of the rod 333 can be located inside the second tube 332, and the second end 333B of the rod 333 can protrude from the second end 332B of the second tube 332. A second ring 338 can be fixedly attached to the second end 333B of the rod 333. The rod 333 can be rotatably coupled to the arm 204 at the second ring 338 (e.g., rotatably coupled to the arm 204 at the fourth joint 312). The rod 333 can slidably engage in the second tube 332, and the rod 333 can be arranged so that it moves along the amplifier axis 335 with respect to the second tube 332.

[0063] The first tube 331, the second tube 332, and the rod 333 can slidably engage one another to form a telescopic tube assembly 339. The second tube 332 can extend from the first tube 331, and the rod 333 can extend from the second tube 332, as shown in Fig. 15 illustrates. The telescopic tube assembly 339 can be positioned between the second support 318 (in Fig. 13 shown) and coupled to the fourth joint 312 located on arm 204.

[0064] A first support 340 and a second support 342 can each be coupled to the rod 333 near the first end 333A and the second end 333B, respectively. The first support 340 can be located inside the second tube 332 near the first end 332A, and the second support 342 can be located outside the second tube 332 near the second end 332B, as shown in Fig. Figure 14 illustrates the second end 332B of the second tube 332 can be adapted to rest on the second support 342.

[0065] The amplifier unit 304 can also include a compression spring 345. The compression spring 345 can be located inside the second tube 332, and the compression spring 345 can be concentric with the second tube 332. The rod 333 can be located at least partially inside the compression spring 345. The compression spring 345 can be coupled at one end to the first support 340 and at the other end to the second end 332B of the second tube 332. In some embodiments, the compression spring 345 can be compressed between the first support 340 and the second end 332B of the second tube 332 to pre-tension the second tube 332 in the direction of the second support 342.

[0066] The amplifier unit 304 can be configured to form an angle of attack 347 between the telescopic tube assembly 339 and the arm 204. The angle of attack 347 can change when the arm 204 rotates in the first direction 210 about the first joint 208, as shown in the Fig. Illustrated on pages 14-15.

[0067] In some embodiments, the amplifier unit 304 can enclose a closure 348, as in Fig. Figure 15 illustrates this. The breechblock 348 can be coupled to the first tube 331 and optionally to the second tube 332. The breechblock 348 can be a mechanical component, including but not limited to a fastening element, a hook, a detent, a connecting piece, a pin, or the like. The breechblock 348 can be coupled to an actuator (e.g., a mechanical actuator, including but not limited to a handle, a lever, or the like, or an electronic actuator, including but not limited to an electric motor, an electromagnet, or the like).

[0068] The amplifier unit 304 can have a locked position and an unlocked position. In the locked position of the amplifier unit 304, the shutter 348 can be configured to engage both the first tube 331 and the second tube 332 to fix the second tube 332 relative to the first tube 331. In the unlocked position of the amplifier unit 304, the shutter 348 can disengage from one or both the first tube 331 and the second tube 332. In the unlocked position, the second tube 332 can move freely relative to the first tube 331 along the amplifier axis 335. The shutter 348 can optionally be actuated to move the amplifier unit 304 into the locked position.

[0069] In some embodiments, the closure 348 can be actuated when the movable section 120 is in a high position 201A. When the closure 348 is actuated, the amplifier unit 304 can be activated to provide additional lifting force 203. When the amplifier unit 304 is activated, the second tube 332 cannot move relative to the first tube 331 if the arm 204 rotates in a first direction 210 during the movement of the movable section 120, as shown in Fig. Figure 15 illustrates this. However, the rod 333 is coupled to the arm 204, and the rod 333 can displace relative to the second tube 332 when the arm 204 rotates in the first direction 210. The distance between the first support 340 and the second end 332B of the second tube 332, where the compression spring 345 is located, can decrease, as shown in Fig. Figure 15 illustrates how the compression spring 345 is compressed. As a result, a second force 322 can be generated by the compression spring 345 on the rod 333 in the axial direction of the rod 333 (e.g., in the direction of the amplifier axis 335). The second force 322 generated by the amplifier unit 304 can act on the arm 204 at the fourth joint 312, as shown in the Fig. 13 and Fig. 15 illustrated.

[0070] Fig. Figure 16 shows a graphical representation of the compensation mechanism 350. Fig. 13. The lifting force 203 generated can act on the movable section 120 to counteract at least part of the combined weight 205 (e.g., the combined weight of one or more loads 130 coupled to the movable section 120 and the weight of the movable section 120) over the entire travel range 201 from a high position 201A to a low position 201B. The lifting force 203 can act on the movable section 120 despite an increase in the first force 321 (e.g., that generated by the gas spring 221). Fig. 13 generated gas spring force 226) and an increase of the force from one or more springs 314 Fig. The second force generated in 13 must be constant at 322.

[0071] The lifting capacity 203 can have a low force range of 360 and a high force range of 365. When the amplifier unit 304 is deactivated (e.g., the lock 348 is not actuated and the second tube 332 can move relative to the first tube 331), the lifting force 203 can only be generated by the first energy storage element 302 (e.g., by the gas spring 221), and thus the lifting force 203 can be in the low force range 360. The third joint 224 can be aligned between a minimum setting configuration and a maximum setting configuration by influencing the adjustment mechanism 206 (e.g., by moving the third joint 224 towards or away from the first joint 208 by turning the first screw 311) such that the lifting force 203 is changed between a minimum lifting force 360A and a maximum lifting force 360B within the low force range 360. When the amplifier unit 304 is activated (e.g.,When the closure 348 is actuated and the second tube 332 is stationary relative to the first tube 331, the lifting force 203 can be generated by both the first energy storage element 302 and the amplifier unit 304, and thus the lifting force 203 can be in the high force range 365. Upon activation, the amplifier unit 304 can cause a force increase 369 to bring the lifting force 203 into the high force range 365. In the high force range 365, the adjustment mechanism 206 can still be influenced (e.g., by turning the first screw 311) so that the lifting force 203 is varied between a minimum lifting force 365A and a maximum lifting force 365B within the high force range 365.

[0072] Fig. Figure 17 shows a schematic view of a lifting mechanism 401 (e.g., the lifting mechanism 100 of the freestanding workstation 180). Fig. 4) according to an embodiment of the current disclosure. The lifting mechanism 401 can incorporate one or more aspects of the features described in the preceding sections relating to the Fig. The lifting mechanisms discussed in Sections 6-16 may be used. The lifting mechanism 401 may include a compensating mechanism 450, one or more leg assemblies 420, and a height adjustment mechanism 425. The height adjustment mechanism 425 may be located at least partially inside the one or more leg assemblies 420 and may be operatively coupled between the one or more leg assemblies 420 and the compensating mechanism 410. The one or more leg assemblies 420 may consist of different shapes, including but not limited to two-part telescopic legs (e.g., the leg assembly 500 made of Fig. 22), three-part telescopic legs (e.g. leg arrangement 520 from Fig. 23), or similar. Depending on the design of one or more leg arrangements 420, the height adjustment mechanism 425 can also have different forms, as shown in the Fig. Illustrated on pages 22-23.

[0073] The compensation mechanism 410 can be connected to a bottom surface 404 of a work surface 402 (e.g., to the bottom surface 188 of the work surface 175 of the freestanding workstation 180). Fig. 4) be coupled. In some embodiments, a frame 406 can be coupled to the underside 404 and the balancing mechanism 410 can be coupled to the frame 406, as in Fig. 17 illustrated.

[0074] In some embodiments, the one or more leg assemblies 420 can include a first element 421, a second element 422, and a third element 423. The first element 421, the second element 422, and the third element 423 can slidably interlock to adjust the height of the one or more leg assemblies 420, as shown in Fig. 20 illustrates. The third element 423 can be coupled to the work surface 402, and the first element 421 can be coupled to one or more feet 428 (in Fig. (20 shown). In further embodiments, the one or more leg assemblies 420 can enclose a first element 421 and a second element 422. The second element 422 can slidably engage with the first element 421. The second element 422 can be coupled to the work surface 402, and the first element 421 can be coupled to one or more feet 428. The one or more feet 428 can be positioned on a base 429. The work surface 402 coupled to the one or more leg assemblies 420 and one or more feet 428 can form a freestanding workstation 400.

[0075] The height adjustment mechanism 425 can be located at least partially inside one or more leg assemblies 420 (e.g., the height adjustment mechanisms 503 and 524 of the Fig. 22-23). ​​In some embodiments, the height adjustment mechanism 425 can include a synchronizing rod 430. The synchronizing rod 430 can run between a first leg assembly 420A and a second leg assembly 420B and enable the synchronization of a movement of the first leg assembly 420A with a movement of the second leg assembly 420B. The height adjustment mechanism 425 can interact with the leveling mechanism 410 to adjust the length of one or more leg assemblies 420 to enable height adjustment of the frame 406 and the work surface 402 relative to the ground 429.

[0076] In some embodiments, the compensating mechanism 410 can include an arm 411, a gas spring 412, and an adjustment mechanism 413, as shown in Fig. Figure 17 illustrates this. The balancing mechanism 410 can replace one or more aspects of the balancing mechanism 150. Fig. 7. The arm 411 can be rotatably coupled to the frame 406 at a first joint 415. The arm 411 can be operatively coupled to one or more leg assemblies 420, and the arm 411 can be configured to rotate in a first direction 417 or in a second direction opposite to the first direction 417 when the frame 406 and the work surface 402 each move towards or away from the floor 429.

[0077] The adjusting mechanism 413 can be coupled to the frame 406, and the gas spring 412 can be coupled between the arm 411 and the adjusting mechanism 413. The adjusting mechanism 413 can be configured to adjust an angle between the gas spring 412 and the arm 411, as discussed in previous sections (e.g., changing the spring angle 227 from Fig. 6) The gas spring 412 can pre-tension the arm 411 so that it rotates in a second direction opposite to the first direction 417.

[0078] In some embodiments, the height adjustment mechanism 425 can include a drive pulley assembly 437. The drive pulley assembly can include a wheel 431 and one or more bushings 432 coupled to the synchronizing rod 430, as shown in Fig. Figure 17 illustrates this. The synchronizing rod 430 can extend between a first end 430A and a second end 430B along a rod axis 433. The one or more bushings 432 with an opening 434 can be fixedly attached to the frame 406. In further embodiments, the one or more bushings 432 can be directly coupled to the underside 404 of the working surface 402. The wheel 431 can be concentric with the synchronizing rod 430, and the wheel 431 can be fixedly attached to the synchronizing rod 430 between the first end 430A and the second end 430B.

[0079] The synchronizing rod 430 can be inserted through the opening 434 located on the one or more bushings 432. The one or more bushings 432 can hold the synchronizing rod 430 at a distance from the underside 404 of the work surface 402 and allow the synchronizing rod 430 to rotate freely about the rod axis 433 with respect to the work surface 402. The wheel 431 can be adapted to rotate together with the synchronizing rod 430 with respect to the work surface 402.

[0080] The rod axis 433 can run essentially horizontally and parallel to the working surface 402. The synchronizing rod 430 can be made of an engineering material, including but not limited to a steel rod or tube, an aluminum rod or tube, or the like. A key 435 (e.g., a key in the form of a square, rectangle, hexagon, star, oval, triangle, polygon, or the like) can be formed near the first end 430A and the second end 430B of the synchronizing rod 430. The key 435 can be adapted to engage with one or more leg assemblies 420.

[0081] The synchronizing rod 430 can be coupled to one or more leg assemblies 420 (e.g., to the first leg assembly 420A and the second leg assembly 420B, respectively, near the first end 430A and the second end 430B of the synchronizing rod 430). The synchronizing rod 430 can interact with the one or more leg assemblies 420 such that it rotates about the rod axis 433 with respect to the work surface 402 when the work surface 402 moves with respect to the ground 429.

[0082] In some embodiments, the compensating mechanism 410 can include a roller 440, a deflection pulley 441, and a rope 442 (e.g., a cable, chain, wire, cord, or the like). The roller 440 can be rotatably coupled to the arm 411, and the deflection pulley 441 can be rotatably coupled to the frame 406. One end of the rope 442 can be coupled to the frame 406 (or to the underside 404) at a first locking device 443. The first locking device 443 can be a hook, a clamp, a connector, or the like. The rope 442 can be guided around the roller 440 and the deflection pulley 441, and the other end of the rope 442 can be coupled to the wheel 431. The rope 442 can be arranged to wrap around the wheel 431 when the work surface 402 moves towards the ground 429, and to unwind from the wheel 431 when the work surface 402 moves away from the ground 429.

[0083] The one or more leg arrangements 420 can be height-adjustable (e.g., extendable, as in Fig. (4 illustrated). The one or more leg assemblies 420 can be adapted to displace the frame 406 and the work surface 402 relative to the ground 429. A height adjustment mechanism 425 can be located at least partially inside the one or more leg assemblies 420. The height adjustment mechanism 425 can include a drive pulley 445. The drive pulley 445 can be rotatably coupled to the one or more leg assemblies 420 near the work surface 402 (e.g., to the third element 185 of the one or more leg assemblies 181 of the freestanding workstation 180). Fig. 4 rotatably coupled). The drive disc 445 can be operatively coupled to the height adjustment mechanism 425 of one or more leg assemblies 420 (e.g., the height adjustment mechanisms 503 and 524 of the Fig. 22-23). ​​The drive disc 445 can rotate about a drive disc axis 446 relative to the one or more leg assemblies 420 when a height of the one or more leg assemblies 420 is set. The drive disc axis 446 can be essentially horizontal.

[0084] An opening 447 (e.g., the one in Fig. 22 shown opening 515, or the one in Fig. The opening 536 shown in Figure 23 can be formed on the drive pulley 445 near its center. The opening 447 can have a key shape (e.g., a square, a rectangle, a hexagon, a star, or the like) that fits the key 435 formed on the synchronizing rod 430 near the first end 430A and the second end 430B. The opening 447 can be adapted to receive the key 435. The drive pulley axis 446 can coincide with the rod axis 433. The drive pulley 445 can be configured to rotate the synchronizing rod 430 and drive (activate, move, or the like) the compensating mechanism 410 when the work surface shifts relative to the ground 429.

[0085] The Fig. Figures 18-19 show schematic views of a balancing mechanism 450 according to some embodiments of the present disclosure. The balancing mechanism 450 can include a main support 451. The main support 451 can be connected to the underside of a work surface (e.g., to the underside 188 of the work surface 175). Fig. 4) be coupled. In some embodiments, the main support 451 can include a first support 452, a second support 453, and a third support 454 to attach one or more components of the balancing mechanism 450 to the main support 451. The first support 452, the second support 453, and the third support 454 can be fixedly attached to the main support 451. In other embodiments, the first support 452, the second support 453, and the third support 454 can be formed from the main support 451 (e.g., bent, punched, extruded, or the like).

[0086] The compensating mechanism 450 can also include a gas spring 455, an arm 460, an amplifier unit 470, and an adjustment mechanism 480. The arm 460 can be rotatably coupled to the main support 451 at a first joint 461 located near one end of the arm 460, and an extension support 462 can be fixedly attached near the other end of the arm 460. The extension support 462 can simplify the coupling of one or more components of the compensating mechanism to the arm 460. In other embodiments, the arm 460 and the extension support 462 can be formed in a single component. In still other embodiments, the extension support 462 can be omitted, and one or more components of the compensating mechanism 450 can be coupled directly to the arm 460.

[0087] The compensating mechanism 450 can be operatively coupled with the height adjustment mechanism 425 to provide lifting assistance when adjusting the height of one or more loads coupled to the lifting mechanism (e.g., a work surface 175 coupled to the lifting mechanism 100). Fig. 4) The arm 460 can be adapted to rotate in a first direction 463 or in a second direction opposite to the first direction 463 when the height of the load is adjusted (e.g., the arm 460 can rotate in the first direction 463 when the load is lowered and in the second direction when the load is raised). The counterbalancing mechanism 450 can counteract at least part of the weight of the load coupled to the lifting mechanism.

[0088] The adjusting mechanism 480 can be coupled to the main bracket 451 near the first joint 461. The adjusting mechanism 480 can include a sliding element 481 and a first screw 482. The sliding element 481 can slidably engage in the first bracket 452. The first screw 482 can be coupled to the first bracket 452 and engage threadedly with the sliding element 481. The sliding element 481 is configured to move relative to the first bracket 452 when the first screw 482 is rotated.

[0089] The gas spring 455 can be coupled at one end to the extension bracket 462 via a second joint 456 and at the other end to the sliding element 481 via a third joint 457. The gas spring 455 can be configured to bias the arm 460 for rotation in a second direction opposite to the first direction 463.

[0090] The sliding element 481 can move relative to the first support 452 to change a spring angle 484 between the gas spring 455 and the arm 460. The sliding element 481 can move between a minimum adjustment configuration (e.g., the sliding element 481 is located near the first joint 461) and a maximum adjustment configuration (e.g., the sliding element is furthest from the first joint 461, as shown in Fig. 18 shown), to adjust a lifting force 203 generated by the balancing mechanism 410, as shown in Fig. 16 illustrated.

[0091] The amplifier unit 470 can be operatively coupled at one end to the main bracket 451 and at the other end to the extension bracket 462 via a fourth joint 458. The amplifier unit 470 can include one or more springs 472 (e.g., one or more tension springs). The one or more springs 472 can be coupled at one end to a first spring plate 473 and at the other end to a second spring plate 474. The first spring plate 473 can be coupled to the second bracket 453 via a second screw 475. The second screw 475 can be rotatably coupled to the second bracket 453 and engage in threaded engagement with the first spring plate 473. The second screw 475 can be adapted to adjust the spring force of the one or more springs 472.The first spring plate 473 can move towards or away from the second bracket 453 to increase or decrease the spring force on the one or more springs 472 when the second screw 475 is rotated relative to the second bracket 453. The one or more springs 472 can be configured to bias the arm 460 for rotation in a second direction opposite to the first direction 463.

[0092] The compensating mechanism 450 can also include one or more deflection pulleys (e.g., a first deflection pulley 485 and a second deflection pulley 486) and a track roller 487. The first deflection pulley 485 and the second deflection pulley 486 can be rotatably coupled to the main support 451, and the track roller 487 can be rotatably coupled to the extension support 462. In some embodiments, the one or more deflection pulleys can be indirectly coupled to the main support 451 (e.g., the second deflection pulley 486 can be coupled to the third support 454, as in Fig. 18 illustrated).

[0093] The compensating mechanism 450 can be operatively coupled to the height adjustment mechanism 425 via a cable 490. The cable 490 can be an elongated section extending between a first section 491 and a second section 492. The first section 491 of the cable 490 can be operatively coupled to the main support 451, and the second section 492 of the cable 490 can be operatively coupled to the height adjustment mechanism 425 (e.g., to the wheel 431). Fig. 17 (connected). The rope 490 can be routed around the first deflection pulley 485, the guide pulley 487, and the second deflection pulley 486 between the first section 491 and the second section 492. The rope 490 can be made of an engineering material, including but not limited to a steel cable, a polymer traction rope, a chain, a cord, or the like.

[0094] The first section of the cable 490 can be coupled to the main support 451 via a ring bolt 493. In some embodiments, the ring bolt 493 can be coupled to the third support 454, as shown in Fig. Figure 18 illustrates the ring bolt 493, which can have a threaded shank 494 and an eyelet 495. The threaded shank 494 can extend transversely from the eyelet 495. The first section 491 of the rope 490 can be coupled to the eyelet 495. The threaded shank 494 can be inserted through an opening 459 located on the third bracket 454, and a nut 496 can engage the threaded shank 494. A section of the third bracket 454 can be located, at least partially, between the eyelet 495 and the nut 496. The nut 496 can be positioned on the threaded shank 494 of the ring bolt 493 such that the eyelet 495 can be placed at a desired distance from the third support 454 to provide slack to the rope 490, which may occur when the rope 490 is between the main support 451 and the height adjustment mechanism (e.g., the height adjustment mechanism 425). Fig. 17) is coupled.

[0095] During height adjustment of the work surface 402, the synchronizing rod 430, coupled to the drive pulley 445, can rotate, thereby also rotating the wheel 431. The rotation of the wheel 431 can be configured such that the second section 492 of the rope 490 can wrap around the wheel 431 when the work surface 402 is lowered. Thus, the height adjustment mechanism 425 can pull the second section 492 of the rope 490 in a second direction 497 when the work surface 402 is moved towards the floor 429. The arm 460 can rotate in the first direction 463 to allow the work surface 402 to be lowered, as shown in Fig. 19 illustrated.

[0096] The gas spring 455 can be compressed between the second joint 456 and the third joint 457 to generate a first force 465 (e.g. similar to the first force 321 from Fig. 13), and the one or more springs 472 can be adapted to be stretched between the first spring plate 473 and the second spring plate 474 to generate a second force 466 (e.g. similar to the second force 322 from Fig. 13) The first force 465 can act on the second joint 456, and the second force 466 can act on the fourth joint 458, as in the Fig. Illustrated in 18-19. Due to the equilibrium of the arm 460, the first force 465 and the second force 466 can define a rope force 467 (e.g., the second rope force 256 from Fig. 13, as discussed in previous sections). The rope force 467 can act on the wheel 431, as in Fig. 24 illustrated.

[0097] The Fig. Figures 20-21 show a front view and a bottom view of a freestanding workstation 400 according to an embodiment of the present disclosure. The freestanding workstation 400 can have a lifting mechanism 401 with one or more leg assemblies 420, a height adjustment mechanism 425 (e.g., the height adjustment mechanism 524 from Fig. 23) and a balancing mechanism 450 (e.g. the balancing mechanism 450 from Fig. 18) include.

[0098] The main bracket 451 of the balancing mechanism 450 made of Fig. 18 can be coupled to a bottom surface 404 of the work surface 402. One or more bushings 432 can be coupled to the bottom surface 404. The one or more bushings 432 can hold a synchronizing rod 430 at a distance from the bottom surface 404. A wheel 431 can be coupled to the synchronizing rod 430. The wheel 431 and the synchronizing rod 430 can be configured to rotate together about the rod axis 433 with respect to the work surface 402. The compensating mechanism 450 can be operatively coupled to the wheel 431 via a cable 490. The wheel 431 can be positioned on the synchronizing rod 430 such that the second section 492 of the cable 490 can lie in line with the wheel 431.

[0099] One or more leg assemblies 420 (e.g., the first leg assembly 420A and the second leg assembly 420B) can be coupled to the base 404. In some embodiments, the one or more leg assemblies 420 can be coupled directly to the base 404 at one end using one or more fasteners 498 and coupled at the other end to one or more feet 428 (e.g., a first foot 428A and a second foot 428B). The one or more leg assemblies 420 can include a height adjustment mechanism 425. The height adjustment mechanism 425 can be at least partially enclosed within the one or more leg assemblies 420. The height adjustment mechanism 425 enclosed in the first leg assembly 420A and the second leg assembly 420B can be synchronized via the synchronizing rod 430.The height adjustment mechanism 425 can be configured to provide a height adjustment for the work surface 402 relative to one or more feet 428. The height adjustment mechanism 425 can be coupled with the counterbalancing mechanism 450 to counteract the weight of the components coupled to the lifting mechanism 401.

[0100] The synchronizing rod 430 can extend between a first end 430A and a second end 430B. The first end 430A can be located near the first leg assembly 420A, and the second end 430B can be located near the second leg assembly 420B. The synchronizing rod 430 can be adapted for coupling with the first leg assembly 420A at the first end 430A and for coupling with the second leg assembly 420B at the second end 430B. A key 435 (e.g., a key in the shape of a square, rectangle, hexagon, star, or the like) can be formed on the synchronizing rod 430 near both the first end 430A and the second end 430B. The key 435 located on the synchronization rod 430 can engage with the height adjustment mechanism 425, which is located inside one or more leg assemblies 420.

[0101] Fig. Figure 22 shows a schematic view of a leg assembly 500 according to an embodiment of the present disclosure. The leg assembly 500 can include a first element 501 and a second element 502, which slidably engages in the first element 501. The first element 501 can extend between a first section 501A and a second section 501B. The second element 502 can extend between a first section 502A and a second section 502B. In some embodiments, the first element 501 can be located at least partially inside the second element 502 (e.g., the second section 501B of the first element 501 can be located inside the first section 502A of the second element 502). In other embodiments, the second element 502 can be located at least partially inside the first element 501.

[0102] The first element 501 can be coupled to a work surface near the first section 501A (e.g., coupled to the work surface 402 from Fig. 20), and the second element 502 can be coupled near the second section 502B with a foot (e.g. coupled with the one or more feet 428 from Fig. 20) The first element 501 can be configured to shift relative to the second element 502 to establish a distance between the first section 502A of the first element 501 and the second section 502B of the second element 502, and thus the leg assembly 500 can provide a height adjustment for the work surface 402 relative to the feet 428. One or more slides (e.g., ball slides, friction slides, sliding elements, rollers, or the like) can be located between the first element 501 and the second element 502. The one or more slides can guide the first element 501 as it shifts relative to the second element 502.

[0103] The leg assembly 500 can include a height adjustment mechanism 503 with a drive unit 504 and a rod 505. The drive unit 504 can be located at least partially inside the first element 501. The drive unit 504 can be configured to rotate the synchronizing rod 430, and consequently, the drive unit 504 can be configured to drive the compensating mechanism 450, as discussed in previous sections.

[0104] In some embodiments, the drive unit 504 can include a first pinion 506 and a second pinion 507. The first pinion 506 can be rotatably coupled to the first element 501 near section 501A, and the second pinion 507 can be rotatably coupled to the first element 501 near the second section 501B. A traction element 508 (e.g., a chain, rope, cable, cord, or the like) can be coupled to the first pinion 506 and the second pinion 507. The traction element 508 can form a loop around the first pinion 506 and the second pinion 507, and the traction element 508 can at least partially wrap around the first pinion 506 and the second pinion 507, as shown in Fig. Figure 22 illustrates the following. The pull element 508 can be toothed (e.g., coupled, connected, fastened, or the like) with the first pinion 506 and the second pinion 507 in such a way that the pull element 508 can synchronize the rotation of the first pinion 506 and the second pinion 507.

[0105] The rod 505 can be located at least partially inside the second element 502. The rod 505 can extend between a first end 505A and a second end 505B. The first end 505A of the rod 505 can be coupled to the second element 502 near the second section 502B, and the second end 505B of the rod 505 can be located inside the first element 501. The pulling element 508 can be fixedly attached to the rod 505 at a closure 509 near the second end 505B of the rod 505. The closure 509 can be located inside the first element 501 between the first pinion 506 and the second pinion 507. The closure 509 can be fixed to the rod 505, and the closure 509 can move relative to the first element 501 when the first element 501 moves relative to the second element 502.Since the pulling element 508 is toothed with the first pinion 506 and the second pinion 507, the first pinion 506 and the second pinion 507 can be arranged to rotate with respect to the first element 501 in a first direction 511, and a part of the pulling element 508 can move in a second direction 512 when the first element 501 moves with respect to the second element 502 (e.g., when the first element 501 moves in the direction of the second part 502B of the second element 502), as in . Fig. 22 illustrated.

[0106] The first pinion may have an opening 515 formed near its center. The opening 515 may have a shape (e.g., a square, a rectangle, a hexagon, a star, or the like) corresponding to the key 435 formed on the synchronizing rod 430 (e.g., the key 435 formed at the first end 430A and the second end 430B of the synchronizing rod 430). The opening 515 may be adapted to receive the key 435. The synchronizing rod 430 may be configured to rotate together with the first pinion 506 when the first element 501 moves relative to the second element 502.

[0107] Fig. Figure 23 shows a schematic view of a leg assembly 520 according to a further embodiment of the present disclosure. The leg assembly 520 can include a first element 521, a second element 522, and a third element 523. The first element 521 can slidably engage the second element 522, and the second element 522 can slidably engage the third element 523. The first element 521 can extend between a first section 521A and a second section 521B. The second element 522 can extend between a first section 522A and a second section 522B. The third element 523 can extend between a first section 523A and a second section 523B. In some embodiments, the first element 521 can be located at least partially inside the second element 522 (e.g.,The second section 521B of the first element 521 can be located inside the second element 522 near the first section 522A of the second element 522), and the second element 522 can be located at least partially inside the third element 523 (e.g., the second section 522B of the second element 522 can be located inside the third element 523 near the first section 523A of the third element 523). In other embodiments, the second element 522 can be located at least partially inside the first element 521, and the third element 523 can be located at least partially inside the second element 522.

[0108] The first element 521 can be coupled to a work surface near the first section 521A (e.g., to the work surface 402 from Fig. 20 coupled), and the third element 523 can be connected with a foot (e.g., with the one or more feet 428). Fig. 20) be coupled near the second section 523B. The first element 521 can be configured to move relative to the second element 522 and the third element 523 to provide a height adjustment for the work surface 402. A first set of one or more slides (e.g., ball slides, friction slides, sliding blocks, rollers, or the like) can be located between the first element 521 and the second element 522 to guide the first element 521 as it moves relative to the second element 522. A second set of one or more slides can be located between the second element 522 and the third element 523 to guide the second element 522 as it moves relative to the third element 523.

[0109] In some embodiments, the leg assembly 520 can include a height adjustment mechanism 524 with a drive unit 525, which is located at least partially inside the first element 521, and a synchronization unit 526, which is located at least partially inside the second element 522. The synchronization unit 526 can synchronize the displacement of the first element 521 relative to the second element 522 with the displacement of the second element 522 relative to the third element 523. The drive unit 525 can be connected to the compensating mechanism 450. Fig. 21 are coupled to drive the compensation mechanism 450 when a height of the leg arrangement 520 is set.

[0110] In some embodiments, the drive unit 525 can include a first pinion 531 and a second pinion 532. The first pinion 531 can be rotatably coupled to the first element 521 near the first section 521A, and the second pinion 532 can be rotatably coupled to the first element 521 near the second section 521B. A first traction element 533 (e.g., a chain, rope, cable, cord, or the like) can be coupled to the first pinion 531 and the second pinion 532. The first traction element 533 can form a loop around the first pinion 531 and the second pinion 532, and the first traction element 533 can at least partially wrap around the first pinion 531 and the second pinion 532, as shown in Fig. Figure 23 illustrates the first pull element 533 can be toothed (e.g. coupled, connected, fastened or the like) with the first pinion 531 and the second pinion 532 in such a way that the first pull element 533 can synchronize the rotation of the first pinion 531 and the second pinion 532.

[0111] A first rod 534 can be coupled to the second element 522. The first rod 534 can be located at least partially inside the second element 522. The first rod 534 can extend between a first end 534A and a second end 534B. The first end 534A of the first rod 534 can be coupled to the second element 522 near the second section 522B, and the second end 534B of the first rod 534 can be located inside the first element 521. The first pull element 533 can be fixedly attached to the first rod 534 at a first lock 535 near the second end 534B of the first rod 534. The first lock 535 can be located inside the first element 521 between the first pinion 531 and the second pinion 532.The first locking element 535 can be fixedly attached to the first rod 534, and the first locking element 535 can displace relative to the first element 521 when the first element 521 displaces relative to the second element 522. Since the first pulling element 533 is toothed with the first pinion 531 and the second pinion 532, the first pinion 531 and the second pinion 532 can be configured to rotate relative to the first element 521 when the first element 521 displaces relative to the second element 522. For example, the first pinion 531 may be configured to rotate in a first direction 511, while part of the first pull element 533 may be configured to shift in a second direction 512 as the first element 521 shifts in the direction of the second part 523B of the third element 523, as in . Fig. 23 illustrated.

[0112] The first pinion 531 may have an opening 536 formed near its center. The opening 536 may have a shape (e.g., a square, a rectangle, a hexagon, a star, or the like) corresponding to the key 435 formed on the synchronizing rod 430 (e.g., the key 435 formed at the first end 430A and the second end 430B of the synchronizing rod 430). The opening 536 may be adapted to receive the key 435. The synchronizing rod 430 may be configured to rotate with the first pinion 531 when the first element 521 moves relative to the second element 522.

[0113] The synchronizing unit 526 can include a third pinion 541, a fourth pinion 542, and a second rod 543. The second rod 543 can extend between a first end 543A and a second end 543B. The first end 543A of the second rod 543 can be coupled to the second element 522 (e.g., coupled to the second section 522B of the second element 522), and the second end 543B of the second rod 543 can be located inside the first element 521, as shown in Fig. Figure 23 illustrates this. The third pinion 541 and the fourth pinion 542 can each be rotatably coupled to the second rod 543 near its second end 543B and first end 543A, respectively. Thus, the third pinion 541 can be rotatably coupled to the second element 522 near its first section 522A, and the fourth pinion 542 can be coupled to the second element 522 near its second section 522B, as shown in Figure 23. Fig. 23 illustrated.

[0114] A second traction element 545 (e.g., a chain, rope, cable, cord, or the like) can be coupled to the third sprocket 541 and the fourth sprocket 542. The second traction element 545 can form a loop around the third sprocket 541 and the fourth sprocket 542, and the second traction element 545 can wrap at least partially around the third sprocket 541 and the fourth sprocket 542, as shown in Fig. Figure 23 illustrates this. The second pull element 545 can be toothed (e.g. coupled, connected, fastened or the like) with the third pinion 541 and the fourth pinion 542 in such a way that the second pull element 545 can synchronize the rotation of the third pinion 541 and the fourth pinion 542.

[0115] A third rod 547 can be coupled to the third element 523. The third rod 547 can be located at least partially inside the third element 523. The third rod 547 can extend between a first end 547A and a second end 547B. The first end 547A of the third rod 547 can be coupled to the third element 523 near the second section 523B, and the second end 547B of the third rod 547 can be located inside the second element 522.

[0116] The second pull element 545 can be fixedly attached to the first element 521 near the second section 521B of the first element 521 at a second lock 548, and the second pull element 545 can be fixedly attached to the third rod 547 near the second end 547B of the third rod 547 at a third lock 549. The second lock 548 and the third lock 549 can be located between the third pinion 541 and the fourth pinion 542. The second lock 548 and the third lock 549 can displace relative to the second element 522 if the first element 521 displaces relative to the second element 522 and the second element 522 displaces relative to the third element 523.Since the second pull element 545 is toothed with the third pinion 541 and the fourth pinion 542, the third pinion 541 and the fourth pinion 542 can be arranged to rotate by the same amount with respect to the second element 522 in order to compensate for the movement of the first element 521 with respect to the second element 522 and the movement of the second element 522 with respect to the third element 523.

[0117] In some embodiments, the first pinion 506 of the leg arrangement 500 can be made of Fig. 22 or the first pinion 531 of the leg arrangement 520 from Fig. 23 synonymous with the drive pulley 445 of the lifting mechanism 401 from Fig. 17. In other versions, a separate drive pulley can be coupled to the height adjustment mechanism (e.g., with the first pinion 506 from Fig. 22 or with the first sprocket 531 from Fig. 22 coupled). The drive pulley 445 can be operatively coupled to the compensating mechanism 410 via a drive pulley unit 437 (in Fig. 17 shown). The drive disc 445 can drive the compensating mechanism 410 during the height adjustment of the one or more leg assemblies 420 to generate a lifting force acting on the moving section in order to counteract the weight of the one or more loads coupled to the moving section.

[0118] Fig. Figure 24 shows a schematic view of the drive pulley unit 437. Fig. 17 according to an embodiment of the present disclosure. The drive pulley unit can include a drive pulley 445 with a first radius 449, a synchronizing rod 430, and a wheel 431 with a second radius 439. The drive pulley 445, the synchronizing rod 430, and the wheel 431 can be concentric about the rod axis 433. The synchronizing rod 430 can be coupled to the drive pulley 445, as discussed in previous sections, and the wheel 431 can be coupled to the synchronizing rod 430, as described in Fig. Figure 17 illustrates this. The drive pulley unit 437 can rotate about the rod axis 433, enabling the lifting mechanism 401 to raise and lower the moving section and one or more loads coupled to the moving section (e.g., the work surface 402 made of Fig. 17).

[0119] A tension element 550 (e.g. the tension element 508 from Fig. 22 or the first pull element 533 from Fig. 23) can be coupled to the drive pulley 445. The tension element 550 can be adapted to pull at least part of a combined weight 552 from the moving section (e.g., the moving section 120 of the freestanding workstation 180). Fig. 4, or the like) and the weight of the one or more loads coupled to the movable section (e.g., the one or more loads 130 from Fig. 4, or the like). The tension element 550 can be adapted to rotate the drive pulley unit 437 in a first direction 511, and the combined weight 552 acting on the drive pulley 445 via the tension element 550 can apply a first torque 554 to the drive pulley unit 437 in the first direction 511, as shown in Fig. 24 illustrated.

[0120] The rope force 467 generated by the compensating mechanism 450 and acting on the wheel 431 via the rope 490 (in the Fig. (as shown in Figures 18-19) a second torque 556 can be applied to the drive pulley unit 437 in a direction opposite to the first direction 511. The first torque 554 can be equal to the second torque 556 to keep the drive pulley unit 437 in equilibrium. To keep the drive pulley unit 437 in equilibrium (e.g., the rope force 467 generated by the balancing mechanism 450 can counteract the combined weight 552), the rope force 467 can be equal to the combined weight 552 multiplied by the ratio between the first radius 449 and the second radius 439.

[0121] The rope force 467 can be defined by one or more parameters of the gas spring 455, one or more parameters of the one or more springs 472, and a geometry of the balancing mechanism 450. By selecting the parameters and the geometry, the rope force 467 can be generated in such a way that it keeps the drive pulley unit in equilibrium. Although the first force 465 and the second force 466 are in the Fig. As shown in Figures 18-19, while the displacement of the movable section may change due to the changing spring angle 484 and the arm angle 464, the rope force 467 can be essentially constant.

[0122] When the drive pulley unit 437 is in equilibrium, it can be stationary (e.g., the drive pulley unit 437 cannot rotate about the rod axis 433), thus maintaining the position (e.g., a height) of the moving section and one or more loads coupled to the moving section (e.g., the work surface 402). In the equilibrium state of the drive pulley unit 437, a user of the positioning device 10 (e.g., the freestanding workstation 400) can Fig. 20) adjust the height of the movable section by applying a small amount of force to the movable section.

[0123] In some embodiments, a locking mechanism can be coupled between the movable section 120 and the stationary section 110 to maintain the position of the movable section 120 relative to the superstructure 140. In some embodiments, the locking arrangement can be coupled between the work surface 402 or the frame 406 and the drive pulley unit 437. Additional remarks and aspects

[0124] Example 1 shows a lifting system for raising and lowering a load, wherein the lifting system comprises: a fixed section that can be coupled to a structure; a movable section that can be coupled to the load, wherein the movable section is displaceable relative to the fixed section; one or more sliding mechanisms coupled between the fixed section and the movable section, wherein the one or more sliding mechanisms at least partially define a range of travel of the movable section relative to the fixed section; and a balancing mechanism coupled to the fixed section and the movable section, wherein the balancing mechanism can be actuated to generate a lifting force to counteract the weight of the load.

[0125] In Example 2, the object from Example 1 optionally includes the balancing mechanism comprising: an arm rotatably coupled to the stationary section; an adjustment mechanism coupled to the stationary section; an energy storage element coupled between the arm and the adjustment mechanism, the energy storage element being configured to bias the arm for rotation in a first direction; and a rope coupled to the arm and the movable section.

[0126] In Example 3, the object from Example 2 optionally includes the energy storage element, which includes one or more gas springs, compression springs, and tension springs.

[0127] In Example 4, the object of one or more of Examples 2-3 optionally includes a roller coupled to the arm; and one or more deflection pulleys coupled to the stationary section; wherein the rope is coupled to the stationary section at a first end and to the movable section at a second end, wherein the rope is guided around the roller and one or more deflection pulleys between the first end and the second end, and wherein the rope is arranged to rotate the arm in a second direction opposite to the first direction when the movable section moves from a high position towards a low position.

[0128] In Example 5, the object of one or more of Examples 2-4 optionally includes the adjustment mechanism comprising: a bracket coupled to the fixed section; a sliding element movably coupled to the bracket and rotatably coupled to the energy storage element; and a screw rotatably coupled to the bracket and threaded in engagement with the sliding element, the screw being adapted to displace the sliding element relative to the bracket when rotated; wherein the adjustment mechanism is configured to change an angle between the energy storage element and the arm when the sliding element displaces relative to the bracket.

[0129] Example 6 shows a lifting system for raising and lowering a work surface, comprising: a work surface with a bottom; a counterbalancing mechanism coupled to the bottom; and one or more leg assemblies detachably coupled to the bottom and operatively coupled to the counterbalancing mechanism; wherein the one or more leg assemblies are configured to move the work surface between a high position and a low position, wherein the one or more leg assemblies are configured to activate the counterbalancing mechanism when the work surface is moved, and wherein the counterbalancing mechanism is adapted to provide lifting assistance by counteracting any weight of the work surface when the work surface moves between the high position and the low position.

[0130] In Example 7, the object from Example 6 optionally includes a frame coupled to the underside; wherein one or more leg arrangements are detachably coupled to the frame, and the compensating mechanism is coupled to the frame.

[0131] In Example 8, the object of one or more of Examples 6-7 optionally includes one or more leg arrangements comprising: a first element coupled to the underside; a second element slidably engaging the first element at a first end and coupled at a second end to a foot, the second end being opposite the first end; the foot being adapted to be placed over a superstructure, and the first element being configured to move relative to the second element to provide a height adjustment for the work surface.

[0132] In Example 9, the object of one or more of Examples 6-8 optionally includes one or more leg arrangements comprising: a first element coupled to the underside; a second element slidably engaging the first element; and a third element slidably engaging the second element at a first end and coupled at a second end to a foot opposite the first end; the foot being adapted to be placed over a superstructure; and the first and second elements being arranged to move relative to the third element to provide a height adjustment for the work surface.

[0133] In Example 10, the article of one or more of Examples 8-9 optionally includes a drive pulley assembly, the drive pulley assembly comprising: one or more bushings coupled to the underside; a rod extending between a first rod end and a second rod end, the rod being coupled to the one or more leg assemblies at the first rod end and at the second rod end, and rotatably coupled to the one or more bushings between the first rod end and the second rod end; and a wheel coupled to the rod between the first rod end and the second rod end;wherein the drive pulley unit is detachably coupled to the one or more leg assemblies and operatively coupled to the compensating mechanism, wherein a displacement of the work surface is adapted to rotate the rod with respect to the work surface, and wherein a rotation of the rod is arranged to activate the compensating mechanism.

[0134] In Example 11, the object of Example 10 optionally includes the rod which encloses a key formed at the first rod end and at the second rod end, the key being formed in a shape selected from a group which includes a star, an oval, a square, a rectangle, a hexagon, a triangle and a polygon.

[0135] In Example 12, the object of one or more of Examples 10-11 optionally includes the balancing mechanism comprising: an arm rotatably coupled to the underside; a first adjustment mechanism coupled to the underside; and a first energy storage element coupled between the arm and the first adjustment mechanism, wherein the first energy storage element is configured to bias the arm to rotate in a first direction; wherein the first adjustment mechanism is configured to modify an aspect of the first energy storage element.

[0136] In Example 13, the subject of Example 12 optionally includes the first adjustment mechanism comprising: a bracket coupled to the underside; a sliding element movably coupled to the bracket; and a screw rotatably coupled to the bracket and threaded in engagement with the sliding element; wherein the first energy storage element is rotatably coupled to the sliding element, the screw being adapted to displace the sliding element relative to the bracket when rotated, and wherein the first adjustment mechanism is configured to change an angle between the first energy storage element and the arm when the sliding element displaces relative to the bracket.

[0137] In Example 14, the object of Example 13 optionally includes a roller coupled to the arm; one or more deflection pulleys coupled to the underside; and a rope having a first end and a second end; wherein the rope is coupled to the underside at the first end and to the wheel at the second end, wherein the rope is guided around the roller and one or more deflection pulleys between the first end and the second end, and wherein the rope is arranged to rotate the arm in a second direction opposite to the first direction when the work surface moves from the high position towards the low position.

[0138] In Example 15, the object of one or more of Examples 11-14 optionally includes one or more leg arrangements comprising a drive unit; the drive unit comprising: a first pinion rotatably coupled to the first element near the underside, the first pinion having an opening in a shape corresponding to a shape of the key formed at the first rod end and the second rod end; a second pinion rotatably coupled to the first element away from the first pinion near the second element; a first pull element coupled to the first pinion and the second pinion, the first pull element forming a loop around the first pinion and the second pinion, and the first pull element being toothed with the first pinion and the second pinion to synchronize the rotation of the first pinion with the rotation of the second pinion;and a first rod coupled at one end to the second element and coupled at the other end to the first pull element; wherein the drive unit is at least partially contained within the first element, and a section of the drive unit is configured to move with the first element, wherein the first pinion and the second pinion are configured to rotate in relation to a height setting of one or more leg assemblies, and wherein the opening is adapted to receive the key located at the first rod end or the second rod end, and wherein the first pinion is adapted to rotate the rod in relation to a height setting of one or more leg assemblies.

[0139] In Example 16, the object of one or more of Examples 9-15 optionally includes one or more leg arrangements, which further comprise a synchronizing unit; wherein the synchronizing unit comprises: a second rod extending from a first end to a second end, the first end of the second rod being coupled to the second element and the second end of the second rod being located inside the first element; a third rod extending from a first end to a second end, the first end of the third rod being coupled to the third element and the second end of the third rod being located inside the second element; a third pinion rotatably coupled to the second rod near the second end of the second rod; a fourth pinion rotatably coupled to the second rod near the first end of the second rod;and a second pull element coupled to the third and fourth pinions, the second pull element forming a loop around the third and fourth pinions, the second pull element being toothed with the third and fourth pinions to synchronize the rotation of the third pinion with the rotation of the fourth pinion, the second pull element also being coupled to the third rod near the second end of the third rod and to the first element; the synchronizing unit being at least partially contained within the second element, and a section of the synchronizing unit being arranged to displace with the second element, and the synchronizing unit being arranged to synchronize a movement between the first element and the second element with a movement between the second element and the third element.

[0140] In Example 17, the object of one or more of Examples 12-16 optionally includes the balancing mechanism, which further includes an amplifier unit coupled between the underside and the arm, the amplifier unit being configured to optionally be activated to pre-tension the arm in the first direction.

[0141] In Example 18, the subject of Example 17 optionally includes the amplifier unit comprising: a first spring plate rotatably coupled to the arm; a second spring plate having a threaded bore near its center; a second energy storage element coupled between the first spring plate and the second spring plate; and a screw rotatably coupled to the underside and engaging the threaded bore of the second spring plate; wherein the screw is adapted to displace the second spring plate along a screw axis to adjust a tensile force of the second energy storage element.

[0142] In Example 19, the object of one or more of Examples 17-18 optionally includes the amplifier unit comprising: a first tube having a first end and a second end coupled to a first ring, the first tube rotatably coupled to the underside of the first ring; a second tube in sliding engagement with the first tube, the second tube having a first end and a second end located inside the first tube; a rod in slidable engagement with the first tube, the rod having a first end and a second end located inside the second tube; the rod comprising: a first support coupled to the first end of the rod; a second support coupled near the second end of the rod; and a second ring coupled to the second end of the rod, the rod being rotatably coupled to the arm at the second ring;a second energy storage element coupled between the first support and the second end of the second tube, wherein the second energy storage element is compressed between the first support and the second end of the second tube to bias the second tube in the direction of the second support; and a closure that is selectively coupling between the first tube and the second tube, wherein the amplifier unit is activated when the closure engages both the first tube and the second tube, and is deactivated when the closure is released from one or both the first tube and the second tube; wherein the amplifier unit is configured to bias the arm to rotate in the first direction when the amplifier unit is activated.

[0143] In Example 20, the object of one or more of Examples 6-19 optionally includes a main support coupled to the underside, wherein the balancing mechanism is coupled to the main support.

[0144] These non-restrictive examples can each stand alone or can be combined in any permutation or combination with one or more of the other examples.

[0145] The foregoing detailed description includes references to the accompanying drawings, which form part of the detailed description. The drawings illustrate specific embodiments in which the present subject matter can be implemented. These embodiments are also referred to herein as "examples." Such examples may include additional elements beyond those shown or described. However, the present inventor also considers examples in which only the elements shown or described are provided.Furthermore, the present inventor also considers examples that use any combination or permutation of the elements shown or described (or one or more aspects thereof), either with reference to a particular example (or one or more aspects thereof) or with reference to other examples shown or described herein (or one or more aspects thereof).

[0146] In case of conflicting uses between this publication and all publications referenced herein, the use in this publication shall prevail.

[0147] In the following patent claims, the terms "including" and "comprising" are open, meaning that a system, device, article, composition, formulation, or method which includes elements in addition to those listed in a claim under such a term is still considered to fall within the scope of protection of that claim. Furthermore, in the following claims, the terms "first," "second," and "third," etc., are used merely as designations and are not intended to impose numerical requirements on their subject matter.

[0148] The foregoing description is intended to be illustrative and not limitative. For example, the examples described above (or one or more aspects thereof) may be used in combination with one another. Other embodiments may be used, for example, by a person skilled in the art after examining the above description. The summary is presented in accordance with 37 CFR §1.72(b) to enable the reader to quickly grasp the nature of the technical disclosure. It is presented with the understanding that it will not be used to interpret or limit the scope of protection or the meaning of the claims. Furthermore, in the detailed description above, various features may be grouped together to streamline the disclosure. This should not be interpreted as making an unclaimed disclosed feature essential to a claim.Rather, the subject matter of the invention may consist of fewer than all features of a particular disclosed embodiment. Therefore, the following claims are hereby incorporated into the detailed description as examples or embodiments, each claim constituting a separate embodiment on its own, and it is intended that such embodiments may be combined with one another in various combinations and permutations. The scope of protection of the present subject matter should be determined with reference to the accompanying claims together with the full scope of equivalents that these claims may assert. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited non-patent literature

[0000] Ergun, et al., entitled “ADJUSTABLE LIFTING SYSTEM”, filed on December 19, 2022 (Attorney File No. 5983.478PRV

[0001]

Claims

[1] Lifting system for raising and lowering a load, wherein the lifting system comprises: a fixed part that can be coupled to a structure; a movable part that can be coupled to the load, wherein the movable part is displaceable relative to the stationary part; one or more sliding mechanisms coupled between the stationary part and the moving part, wherein the one or more sliding mechanisms at least partially define a travel range of the moving part relative to the stationary part; and a balancing mechanism coupled to the stationary and the moving part, wherein the balancing mechanism can be actuated to generate a lifting force in order to counteract the weight of the load. [2] Lifting system according to claim 1, wherein the balancing mechanism comprises: an arm that is rotatably coupled to the fixed part; an adjustment mechanism coupled to the stationary part; an energy storage element coupled between the arm and the adjustment mechanism, wherein the energy storage element is configured to bias the arm for rotation in a first direction; and a rope coupled to the arm and the moving part. [3] Lifting system according to claim 2, wherein the energy storage element includes one or more of a gas spring, a compression spring and a tension spring. [4] Lifting system according to claim 2, further comprising: a roller coupled to the arm; and one or more deflection pulleys coupled to the stationary part; wherein the rope is connected at one end to the fixed part and at the other end to the movable part, wherein the rope is guided around the pulley and one or more deflection pulleys between the first end and the second end, and the rope is designed to rotate the arm in a second direction opposite to the first direction when the movable part moves from a high position towards a low position. [5] Lifting system according to claim 2, wherein the adjustment mechanism comprises: a bracket coupled to the stationary part; a sliding element movably coupled to the holder and rotatably coupled to the energy storage element; and a screw rotatably coupled to the holder and in thread engagement with the sliding element, wherein the screw is adapted to move the sliding element relative to the holder when rotated; wherein the adjustment mechanism is designed to change an angle between the energy storage element and the arm when the sliding element moves relative to the bracket. [6] Lifting system for raising and lowering a work surface, comprising: a work surface with an underside; a balancing mechanism coupled to the underside; and one or more leg arrangements that are detachably coupled to the underside and are operatively coupled to the balancing mechanism; wherein one or more leg arrangements are designed to move the work surface between a high position and a low position, wherein one or more leg arrangements are designed to actuate the compensating mechanism when the work surface is moved, and wherein the compensation mechanism is adapted to provide lifting assistance by counteracting the weight of the work surface when the work surface moves between the high position and the low position. [7] Freestanding workstation according to claim 6, which further comprises a frame coupled to the underside; where one or more leg arrangements are detachably coupled to the frame, the compensation mechanism is coupled to the frame. [8] Lifting system according to claim 6, comprising one or more leg arrangements: a first element coupled to the underside; a second element which engages slidably with the first element at a first end and is coupled to a foot at a second end, with the second end being opposite the first end; the foot is adapted to be placed over a structure, and where the first element is set up to shift relative to the second element in order to provide a height adjustment for the work surface. [9] Lifting system according to claim 6, comprising one or more leg arrangements: a first element coupled to the underside; a second element that is slidably interlocked with the first element; and a third element which engages slidably with the second element at a first end and is coupled to a foot at a second end, with the second end being opposite the first end; the foot is adapted to be placed over a structure, and wherein the first element and the second element are set up to be shifted relative to the third element in order to provide a height adjustment for the work surface. [10] Lifting system according to claim 8 or 9, further comprising a drive pulley unit, wherein the drive pulley unit includes: one or more sockets connected to the underside; a rod extending between a first rod end and a second rod end, wherein the rod is coupled to the one or more leg assemblies at the first rod end and at the second rod end and is rotatably connected to the one or more bushings between the first rod end and the second rod end; and a wheel coupled to the rod between the first rod end and the second rod end; wherein the drive pulley unit is detachably coupled to one or more leg arrangements and is operatively coupled to the compensating mechanism, wherein a shift of the work surface is adapted to rotate the rod relative to the work surface, and a rotation of the rod is designed to activate the balancing mechanism. [11] Lifting system according to claim 10, wherein the rod encloses a key formed at the first rod end and at the second rod end, the key being formed in a shape selected from a group comprising a star, an oval, a square, a rectangle, a hexagon, a triangle and a polygon. [12] Lifting system according to claim 10, wherein the balancing mechanism comprises: an arm rotatably coupled to the underside; a first adjustment mechanism coupled to the underside; and a first energy storage element coupled between the arm and the first adjustment mechanism, wherein the first energy storage element is configured to pre-tension the arm for rotation in a first direction; the first adjustment mechanism is designed to change an aspect of the first energy storage element. [13] Lifting system according to claim 12, wherein the first adjustment mechanism comprises: a bracket coupled to the underside; a sliding element coupled to the bracket; and a screw rotatably coupled to the bracket and in thread engagement with the sliding element; wherein the first energy storage element is rotatably coupled to the sliding element, the screw is designed to move the sliding element relative to the bracket when rotated, and wherein the first adjustment mechanism is designed to change an angle between the first energy storage element and the arm when the sliding element shifts relative to the mount. [14] Lifting system according to claim 13, further comprising: a roller coupled to the arm; one or more deflection pulleys coupled to the underside; and a rope with a first end and a second end; where the rope is coupled to the underside at the first end and to the wheel at the second end, wherein the rope is guided around the pulley and one or more deflection pulleys between the first end and the second end, and the rope is designed to rotate the arm in a second direction opposite to the first direction when the work surface moves from the high position towards the low position. [15] Lifting system according to claim 11, wherein the one or more leg arrangements comprise a drive unit; wherein the drive unit includes: a first pinion rotatably coupled to the first element near the underside, the first pinion having an opening in a shape corresponding to a shape of the key formed at the first rod end and the second rod end; a second pinion that is rotatably coupled to the first element at a distance from the first pinion, close to the second element; a first pull element coupled to the first and second pinions, wherein the first pull element forms a loop around the first and second pinions and the first pull element is toothed with the first and second pinions to synchronize the rotation of the first pinion with the rotation of the second pinion; and a first rod that is coupled at one end to the second element and at the other end to the first pulling element; wherein the drive unit is at least partially contained within the first element and part of the drive unit is designed to move with the first element, wherein the first and second pinions are configured to rotate depending on a height setting of one or more leg assemblies, and wherein the opening is adapted to receive the key located at the first rod end or the second rod end, and wherein the first pinion is adapted to rotate the rod depending on a height setting of one or more leg assemblies. [16] Lifting system according to claim 9, wherein the one or more leg arrangements further comprise a synchronization unit; wherein the synchronization unit includes: a second rod extending from a first end to a second end, wherein the first end of the second rod is coupled to the second element and the second end of the second rod is located inside the first element; a third rod extending from a first end to a second end, wherein the first end of the third rod is coupled to the third element and the second end of the third rod is located inside the second element; a third pinion, which is rotatably coupled to the second rod near the second end of the second rod, a fourth pinion, rotatably coupled to the second rod near the first end of the second rod; and a second pull element coupled to the third pinion and the fourth pinion, wherein the second pull element forms a loop around the third pinion and the fourth pinion, wherein the second pull element is toothed with the third pinion and the fourth pinion to synchronize the rotation of the third pinion with the rotation of the fourth pinion, wherein the second pull element is also coupled to the third rod near the second end of the third rod and is coupled to the first element; wherein the synchronization unit is at least partially contained within the second element and part of the synchronization unit is configured to move with the second element, and wherein the synchronization unit is set up to synchronize a movement between the first element and the second element with a movement between the second element and the third element. [17] Lifting system according to claim 12, wherein the balancing mechanism further includes an amplifier unit coupled between the underside and the arm, wherein the amplifier unit is configured to be selectively activated to pre-tension the arm in the first direction. [18] Lifting system according to claim 17, wherein the amplifier unit comprises: a first spring plate rotatably coupled to the arm; a second spring plate with a threaded hole near its center; a second energy storage element coupled between the first spring plate and the second spring plate; and a screw rotatably coupled to the underside and engaged in threaded engagement with the second spring plate at the threaded bore; the screw is adapted to move the second spring plate along the screw axis in order to adjust a tensile force of the second energy storage element. [19] Lifting system according to claim 17, wherein the amplifier unit comprises: a first tube with a first end and a second end coupled to a first ring, wherein the first tube is rotatably coupled to the underside of the first ring; a second tube which slidably engages in the first tube, the second tube having a first end and a second end located inside the first tube; a rod which slidably engages in the first tube, wherein the rod has a first end and a second end located inside the second tube; wherein the rod includes: a first support coupled to the first end of the rod; a second support coupled near the second end of the rod; and a second ring coupled to the second end of the rod, wherein the rod is rotatably coupled to the arm at the second ring; a second energy storage element coupled between the first support and the second end of the second tube, wherein the second energy storage element is compressed between the first support and the second end of the second tube to prestress the second tube in the direction of the second support; and a closure which can be selectively coupled between the first tube and the second tube, wherein the amplifier unit is activated when the closure engages both the first tube and the second tube, and is deactivated when the closure is released from one or both the first tube and the second tube; wherein the amplifier unit is configured to pre-tension the arm to rotate in the first direction when the amplifier unit is activated. [20] Lifting system according to claim 6, further comprising a main support coupled to the underside, wherein the balancing mechanism is coupled to the main support.

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