Lifting system

Abstract

The invention relates to a lifting system. The lifting system is used for lifting and lowering loads around the structure. The lifting system includes: a first member; a second member; a sliding mechanism; and a balancing mechanism. The balancing mechanism includes: an arm; a first energy storage member; and a rope. The arm is rotatably coupled to the first member. A first energy storage member is coupled to the arm, the first energy storage member configured to bias the arm for rotation in a first direction. And a rope coupled to the arm, the rope including a first end portion coupled to the first member and a second end portion coupled to the second member, the rope coupled to the arm between the first end portion and the second end portion, the rope configured to rotate the arm when the second member translates relative to the first member.

Description

[0001] This application is a continuation-in-part of the application for patent, having an application date of December 18, 2023, application number 202380086729.2 (PCT / US2023 / 084663), entitled “ADJUSTABLE LIFT SYSTEM.”

[0002] CLAIM OF PRIORITY

[0003] This patent application claims the benefit of priority to U.S. Provisional Patent Application Serial No. 63 / 476,087, filed December 19, 2022 (Attorney Docket No. 5983.478PRV), entitled “ADJUSTABLE LIFT SYSTEM,” by Ergun et al., the entire contents of which are hereby incorporated by reference herein. TECHNICAL FIELD

[0004] This document relates generally to, but is not limited to, lift systems for lifting and balancing loads. BACKGROUND

[0005] Electronic displays such as, for example, computer monitors, tablets, televisions, and the like, and workstations such as, for example, desks, carts, wall mounts, and the like, are used in a variety of scenarios. In some scenarios, a single electronic display can be used by multiple operators. In another example, a television can be deployed in a conference center where many people use the electronic display throughout the day. In yet another example, a workstation can be deployed in a workplace that is shared by multiple employees. Flexible and adjustable workstations can increase their usage in shared workspaces. BRIEF DESCRIPTION OF DRAWINGS

[0006] The following drawings illustrate the specific embodiments of the present application and are not intended to limit the scope of the present application. The drawings are not drawn to scale and are intended for use in conjunction with the explanations in the following detailed description. Like reference numbers can describe similar components throughout the various views. Like reference numbers having different letter suffixes can represent different instances of the like components. The drawings generally illustrate various embodiments of the present document in an example manner and not by way of limitation.

[0007] Figure 1 is a block diagram representation of a positioning device according to an example configuration of the present disclosure.

[0008] Figure 2 is an isometric view of a mobile workstation according to an example configuration of the present disclosure.

[0009] Figure 3 is an isometric view of a wall-mounted workstation according to an example configuration of the present disclosure.

[0010] Figure 4It is an isometric view of a freestanding workstation (e.g., a desk, etc.) according to an example configuration of this disclosure.

[0011] Figure 5 This is an isometric view of a wall-mounted component for an electronic display according to an example configuration of this disclosure.

[0012] Figure 6 This is a schematic diagram of a lifting mechanism according to an example configuration of this disclosure.

[0013] Figure 7 This is a schematic diagram of a lifting mechanism according to another example configuration of this disclosure.

[0014] Figure 8 This is a schematic diagram of a lifting mechanism according to yet another example configuration of this disclosure.

[0015] Figure 9 This is a schematic diagram of a lifting mechanism according to yet another example configuration of this disclosure.

[0016] Figure 10 This is a schematic diagram of a lifting mechanism according to yet another example configuration of this disclosure.

[0017] Figure 11 This is a schematic diagram of a lifting mechanism according to yet another example configuration of this disclosure.

[0018] Figure 12 This is a schematic diagram of a lifting mechanism according to yet another example configuration of this disclosure.

[0019] Figure 13 This is a schematic diagram of a lifting mechanism according to yet another example configuration of this disclosure.

[0020] Figure 14 This is a schematic diagram of an accelerator component according to an example configuration of this disclosure.

[0021] Figure 15 It is in the enabled configuration. Figure 14 A schematic diagram of the booster component.

[0022] Figure 16 It is by Figure 13 A graphical representation of the lifting force generated by the lifting mechanism.

[0023] Figure 17 This is a schematic diagram of the lifting mechanism of a stand-alone workstation according to an example configuration of this disclosure.

[0024] Figure 18 It is in the maximum adjustment setting. Figure 17 A schematic diagram of the balancing mechanism.

[0025] Figure 19 It corresponds to the lower position of the working surface. Figure 17A schematic diagram of the balancing mechanism.

[0026] Figure 20 It is based on the example configuration of this disclosure. Figure 17 Front view of a standalone workstation.

[0027] Figure 21 This is a bottom view of a standalone workstation.

[0028] Figure 22 This is a schematic diagram of a leg assembly according to an example configuration of this disclosure.

[0029] Figure 23 This is a schematic diagram of a leg assembly according to another example configuration of this disclosure.

[0030] Figure 24 This is a schematic diagram of the drive pulley assembly. Summary of the Invention

[0031] This disclosure relates to means for positioning a load (e.g., an electronic display, a work surface, a platform, etc.) along a travel range. In some cases, positioning may include lifting the load in a vertical direction and / or translating the load in a vertical direction. Positioning the load may also involve offsetting the weight of the load and at least a portion of the weight of the positioning means to assist a user in moving the load.

[0032] In some configurations, the positioning device may include a lifting mechanism for raising and lowering the load. The lifting mechanism typically includes a fixed portion configured to be coupled to the structure and a movable portion configured to be coupled to the load. A sliding mechanism may be coupled to the fixed portion and the movable portion, and the sliding mechanism may provide a range of travel for the movable portion relative to the fixed portion. The range of travel may include a high position and a low position, which in some cases may be the same as a minimum height and a maximum height. In the high position, the movable portion may be close to the upper end of the fixed portion, and in the low position, the movable portion may be close to the lower end of the fixed portion.

[0033] In some example configurations, the lifting mechanism may include a balancing mechanism. The balancing mechanism may be mounted on either the fixed or movable portion, and may be coupled to both the fixed and movable portions. The balancing mechanism may be configured to generate a lifting force that counteracts the combined weight of the load coupled to the movable portion (e.g., the weight of an electronic display, the weight of a work surface, etc.) and the weight of the movable portion. In some example configurations (e.g., when the balancing mechanism is mounted on the movable portion), the lifting force may also counteract the weight of the balancing mechanism itself. Detailed Implementation

[0034] The following detailed description is exemplary in nature and is not intended to limit the scope, applicability, or configuration of the invention in any way. Rather, the following description provides some practical illustrations for carrying out exemplary embodiments of the invention. Examples of construction, materials, dimensions, and manufacturing processes are provided for selected elements, and all other elements employ construction, materials, dimensions, and manufacturing processes known to those skilled in the art. Those skilled in the art will recognize that many of the examples mentioned have various suitable alternatives.

[0035] Figure 1 This is a block diagram representation of a positioning device 10 according to an exemplary configuration of this disclosure. The positioning device 10 may be a mobile workstation 160 (in... Figure 2 (shown in the image), wall-mounted workstation 170 (in) Figure 3 (shown in), standalone workstation 180 (in) Figure 4 (shown in the image), wall-mounted assembly 190 (in) Figure 5 (as shown in the figure) One of the following. The positioning device 10 may include a lifting mechanism 100 connected to the structure 140, which includes, but is not limited to, a wall, a wheeled base, a cabinet, etc.

[0036] The lifting mechanism 100 may include a fixed portion 110 and a movable portion 120. The fixed portion 110 may be stationary relative to the structure 140. The movable portion 120 may be movably coupled to the fixed portion 110 (e.g., slidably, etc.). In some example configurations, one or more loads 130 (e.g., electronic displays, work surfaces, platforms, etc.) may be coupled to the movable portion 120. The lifting mechanism 100 may be configured to raise and lower one or more loads 130 relative to the structure 140.

[0037] The lifting mechanism 100 may also include a balancing mechanism 150 connected between the fixed portion 110 and the movable portion 120. The balancing mechanism 150 may be adapted to counteract the combined weight of one or more loads 130 and a portion of the weight of the movable portion 120.

[0038] Figures 2 to 5 The illustrations show various applications of the positioning device 10 according to some example configurations of the present disclosure. Figures 2 to 5 Each example configuration shown includes information about... Figure 1 The various components of the positioning device 10 described in the previous section.

[0039] Figure 2This is an isometric view of a mobile workstation 160 according to an exemplary configuration of the present disclosure. The mobile workstation 160 may include a lifting mechanism 100 having a fixed portion 110 (e.g., a support column 161) and a movable portion 120 (e.g., a movable bracket 162). The movable bracket 162 may be slidably engaged with the support column 161. The support column 161 may extend generally vertically from a first portion 161A to a second portion 161B. The support column 161 may be coupled to a structure 140 (e.g., a wheeled base 163) near the first portion 161A, and the movable bracket 162 may be located near the second portion 161B of the support column 161. One or more loads 130 (e.g., a platform 164, etc.) may be coupled to the movable bracket 162. The platform 164 may include a work surface 165, a display mount 166, a keyboard tray, and other components. The display mount 166 may 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 connected to the platform 164.

[0040] Figure 2 The lifting mechanism 100 of the mobile workstation 160 may further include a balancing mechanism 150. The balancing mechanism 150 may be located inside the support column 161. The balancing mechanism 150 may be coupled between the support column 161 and the movable bracket 162. The balancing mechanism 150 may generate a lifting force to counteract the combined weight of one or more loads 130 (e.g., the weight of the platform 164, display mount 166, electronic display 167, etc.) and the weight of a portion of the lifting mechanism 100 (e.g., the weight of the movable bracket 162, etc.).

[0041] Figure 3 This is an isometric view of a wall-mounted workstation 170 according to an exemplary configuration of the present disclosure. The wall-mounted workstation 170 may include a lifting mechanism 100 having a fixed portion 110 (e.g., a support column 171) and a movable portion 120 (e.g., a movable bracket 172). The movable bracket 172 may be slidably engaged with the support column 171. The support column may be coupled to a structure 140 (e.g., a wall 173). One or more loads 130 (e.g., a work surface 174, etc.) may be coupled to the movable bracket 172. In some exemplary configurations, one or more loads 130 may include one or more other components (e.g., an electronic display, keyboard, printer, etc.) coupled to the work surface 174. The lifting mechanism 100 may be configured to raise and lower one or more loads 130.

[0042] Figure 3The lifting mechanism 100 of the wall-mounted workstation 170 may further include a balancing mechanism 150. The balancing mechanism 150 may be located inside the support column 171. The balancing mechanism 150 may be coupled between the support column 171 and the movable support 172. The balancing mechanism 150 may generate a lifting force to counteract the 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 portion of the lifting mechanism 100 (e.g., the weight of the movable support 172, etc.).

[0043] Figure 4 This is an isometric view of a freestanding workstation 180 (e.g., a table, etc.) according to an exemplary configuration of this disclosure. The freestanding workstation 180 may have a lifting mechanism 100 including one or more leg assemblies 181 (e.g., first leg assembly 181A and second leg assembly 181B) supporting one or more loads 130 (e.g., a work surface 175 and one or more other components coupled to the work surface 175). One or more leg assemblies 181 may include a fixed portion 110 (e.g., a first member 183) and a movable portion 120 (e.g., a second member 184 and a third member 185). The first member 183 may extend generally vertically from the first portion 183A to the second portion 183B. The first member 183 may be coupled to a foot 186 near the first portion 183A and engage movably (e.g., in a collapsible telescopic manner) with the second member 184 and the third member 185 near the second portion 183B. The foot 186 can be mounted on the structure 140 (e.g., base plate 187). As in Figure 4 As illustrated, a second member 184 or a third member 185 of one or more leg assemblies 181 may be coupled to the underside 188 of the working surface 175. In some example configurations, a frame 189 may be coupled to the underside 188 of the working surface 175. The frame 189 may be adapted to receive a second member 184 or a third member 185 of one or more leg assemblies 181 to couple one or more leg assemblies 181 to the working surface 175.

[0044] In some example configurations, one or more leg assemblies 181 may be height-adjustable. One or more leg assemblies 181 may include one or more nesting telescopic members (e.g., a second member 184 and a third member 185). One or more nesting telescopic members may be adapted to move relative to a first member 183 to adjust the height of one or more leg assemblies 181. One or more leg assemblies 181 may also include a height adjustment mechanism 182.

[0045] Height adjustment mechanism 182 (e.g., Figures 22 to 23The height adjustment mechanism 503 or 524 may be housed within one or more leg assemblies 181. The height adjustment mechanism 182 may be coupled to a first member 183, a second member 184, and a third member 185 of one or more leg assemblies 181. The height adjustment mechanism 182 may be configured to adjust the height of one or more leg assemblies 181. In some example configurations, the height adjustment mechanism 182 may include a synchronizing lever (e.g., ) for synchronizing the movement of the first leg assembly 181A with the movement of the second leg assembly 181B. Figure 17 Synchronizing rod 430).

[0046] Figure 4 The lifting mechanism 100 of the stand-alone workstation 180 may also include a balancing mechanism 150. In some example configurations, the balancing mechanism 150 may be coupled to the lower side 188 of the work surface 175 (e.g., coupled to the frame 189). The balancing mechanism 150 may be operatively coupled to a height adjustment mechanism 182. The balancing mechanism 150 may generate a lifting force to counteract the 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) and the weight of a portion of the lifting mechanism 100 (e.g., the weight of the second member 184 and the third member 185).

[0047] Figure 5 This is an isometric view of a wall-mounted assembly 190 for mounting an electronic display 191 on a wall 192, according to an exemplary configuration of this disclosure. For clarity, the electronic display 191 is... Figure 5 The wall-mount assembly 190 may include a lifting mechanism 100 having a fixed portion 110 (e.g., a support column 193) and a movable portion 120 (e.g., a movable bracket 194). The support column 193 may be coupled to the wall 192, and the movable bracket 194 may be slidably engaged with the support column 193. A display mount 195 may be coupled to the movable bracket 194. One or more loads 130 may be coupled to the movable bracket 194 (e.g., the display mount 195 may be adapted to receive an electronic display 191). The lifting mechanism 100 may be configured to raise and lower the electronic display 191 relative to the wall 192.

[0048] Figure 5The lifting mechanism 100 of the wall-mounted assembly 190 may further include a balancing mechanism 150. The balancing mechanism 150 may be located inside the support column 193. The balancing mechanism 150 may be coupled between the support column 193 and the movable bracket 194. The balancing mechanism 150 may generate a lifting force to counteract the combined weight of the load 130 (e.g., the electronic display 191, etc.) and the weight of a portion of the lifting mechanism 100 (e.g., the weight of the movable bracket 194 and the display mount 195, etc.).

[0049] exist Figures 2 to 5 In each of the applications shown, it is understood that the load 130 (e.g., platform, electronic display, work surface, etc.) coupled to the movable part 120 can have a wide range of weights. The weight range can depend on the brand and model of the device (e.g., electronic display, etc.) and the manufacturing materials (e.g., the materials of the work surface, platform, etc.). In some example configurations, the force generated by the lifting mechanism 100 can be adjustable to accommodate a wide range of weights. Adjustment of the lifting force can be accomplished by various methods, including but not limited to adjusting the tension of the energy storage member included in the balancing mechanism (e.g., by adjusting...). Figure 13 The tension of one or more springs 314 in the balancing mechanism 350), and the adjustment of the angle of the energy storage member included in the balancing mechanism (e.g., by adjusting...). Figure 13 The balancing mechanism 350 includes the gas spring 221 and the arm 204 (spring angle 227), etc. In other configurations, such as in... Figure 13 As shown in the diagram, one or more adjustment methods can be used simultaneously to adjust lift.

[0050] Figure 6 This is a schematic diagram of a lifting mechanism 100 according to an exemplary configuration of the present disclosure. The lifting mechanism 100 may have a fixed portion 110 and a movable portion 120 movably coupled to the fixed portion 110 in a manner that is movably connected (e.g., slidably, etc.). The fixed portion 110 can be directly or indirectly coupled to a structure 140 (e.g., a wall, a wheeled base, etc.). One or more loads 130 (e.g., electronic displays, platforms, work surfaces, etc.) can be directly or indirectly coupled to the movable portion 120. The movable portion 120 can translate relative to the fixed portion 110 through a travel range 201. Therefore, in some exemplary configurations, the lifting mechanism 100 (in...) Figure 6 Positioning device 10 (shown in the middle figure) Figures 2 to 5(As shown in the figure) One or more loads 130 can be translated relative to structure 140 by translating the movable part 120 relative to the fixed part 110. In each of these example configurations, the movable part 120 can be configured to translate between a high position 201A and a low position 201B along the travel range 201.

[0051] In some example configurations, the lifting mechanism 100 may include a balancing mechanism 150. For example... Figure 6 As illustrated, the balancing mechanism 150 can be coupled to the fixed portion 110, and the balancing mechanism 150 can be operatively coupled to the movable portion 120. The balancing mechanism 150 can generate a lifting force 203 to counteract the combined weight 205 of one or more loads 130 coupled to the movable portion 120 and the weight of the movable portion 120.

[0052] In other example configurations, the balancing mechanism 150 may be coupled to the movable portion 120 (e.g., coupled to...). Figure 20 (Working surface 402 as shown in the figure). In this configuration, in addition to the weight of one or more loads 130 and movable parts 120, the lifting force can also offset the weight of the balancing mechanism 150.

[0053] In some example configurations, such as Figure 6 As illustrated, the balancing mechanism 150 may include an arm 204 and an adjusting mechanism 206. The arm 204 may have a first portion 204A and a second portion 204B. The arm 204 may extend along an arm axis 207 between the first portion 204A and the second portion 204B. The arm 204 may be made of an engineering material including, but not limited to, stamped sheet metal, tubing, die-cast supports, rods, etc. The arm 204 may be rotatably connected to a fixed portion 110 at a first hinge 208 near the first portion 204A. The arm axis 207 may be oriented relative to the fixed portion 110 at an arm angle 209. The arm 204 may be configured to rotate about the first hinge 208 in a first direction 210 such that the arm angle 209 may increase as the movable portion 120 translates along a travel range 201 from a high position 201A to a low position 201B.

[0054] The adjusting mechanism 206 may include a bracket 212, a slider 214, and a screw 216. The bracket 212 may be fixedly attached to the fixed portion 110 away from the first hinge 208. The slider 214 may be slidably engaged with the bracket 212. The screw 216 may be coupled to the bracket 212 and threadedly engaged with the slider 214. The slider 214 may be configured to translate relative to the bracket 212 when the screw 216 rotates.

[0055] The lifting mechanism 100 may also include an energy storage member 220. In an example configuration, the energy storage member 220 may be a gas spring 221. In other example configurations, the energy storage member 220 may be any of a compression spring, a tension spring, an elastic band, etc. The energy storage member 220 may be rotatably connected to the arm 204 at a second hinge 222 and rotatably connected to the adjusting mechanism 206 at a third hinge 224. Figure 6 As illustrated, the second hinge 222 may be located between the first portion 204A and the second portion 204B of the arm 204, and the third hinge 224 may be located on the slider 214.

[0056] The third hinge 224 may be configured to move toward or away from the first hinge 208 to adjust a first distance 223 between the first hinge 208 and the third hinge 224 as the slider 214 translates relative to the support 212. The second hinge 222 may be configured to move toward (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 hinge 224 to adjust a second distance 228 between the second hinge 222 and the third hinge 224 as the arm 204 rotates relative to the fixed portion 110.

[0057] Energy storage member 220 (e.g., gas spring 221) can be configured to generate a force (e.g., gas spring force 226). Gas spring force 226 can be applied between the second hinge 222 and the third hinge 224, and gas spring force 226 can bias arm 204 to rotate in a second direction opposite to the first direction 210. As the second distance 228 decreases as arm 204 rotates along the first direction 210, gas spring force 226 can increase.

[0058] The energy storage member 220 (e.g., a gas spring 221) can be oriented at an angle (e.g., spring angle 227) relative to the arm 204. The spring angle 227 can decrease as the slider 214 translates toward the first hinge 208, reducing the first distance 223. The spring angle 227 can also decrease as the arm 204 rotates in the first direction 210. In one extreme orientation, the third hinge 224 can be close to the first hinge 208 in the minimum adjustment configuration. The spring angle 227 can increase as the slider 214 translates away from the first hinge 208, increasing the first distance 223. In another extreme orientation, the third hinge 224 can be furthest from the first hinge 208 in the maximum adjustment configuration. The spring angle 227 in the maximum adjustment configuration can be larger than that in the minimum adjustment configuration. The gas spring force 226 can be proportional to the spring angle 227, so that the gas spring force 226 in the maximum adjustment configuration can be larger than that in the minimum adjustment configuration.

[0059] The lifting force 203 provided by the balancing mechanism 150 is proportional to the gas spring force 226. Therefore, as Figure 16 As illustrated, the balancing mechanism 150 can provide a greater lifting force 203 in the maximum adjustment configuration compared to the lifting force 203 in the minimum adjustment configuration. In the example configuration, the third hinge 224 can be located anywhere between the minimum and maximum adjustment configurations.

[0060] An energy storage member 220 (e.g., a gas spring 221) may extend between a second hinge 222 and a third hinge 224. As the arm 204 rotates about the first hinge 208, a second distance 228 between the second hinge 222 and the third hinge 224 may change, thereby causing varying tension (or compression) on the energy storage member 220. As the tension in the energy storage member 220 changes, the energy storage member 220 may exert varying forces on the arm 204 at the second hinge 222. For example, when the arm 204 rotates in a first direction 210, the second distance 228 decreases, resulting in compression of the gas spring 221 and thus an increase in the gas spring force 226. Similarly, when the arm 204 rotates in a second direction opposite to the first direction 210, the second distance 228 increases, resulting in extension of the gas spring 221 and thus a decrease in the gas spring force 226.

[0061] In some example configurations, the lifting mechanism 100 may further include a rope 230. The balancing mechanism 150 may be operably connected to the movable portion 120 via the rope 230. The rope 230 may extend from a first portion 230A to a second portion 230B. The first portion 230A may be connected to the arm 204 at a first latch 231, and the second portion 230B may be connected to the movable portion 120 at a second latch 232. In some example configurations, the first hinge 208 and the first latch 231 may be located on the arm axis 207, and the second hinge 222 may also be located on the arm axis 207 between the first hinge 208 and the first latch 231. In other example configurations, such as... Figure 6 As illustrated, the second hinge 222 may be offset laterally from the arm axis 207. In other example configurations, the first latch 231 may be located between the first hinge 208 and the second hinge 222. The rope 230 may be an elongated member made of engineering materials including, but not limited to, steel rope, tensile polymer rope, chain, cable, cord, etc.

[0062] In some example configurations, the lifting mechanism may also include a redirecting pulley 234. The redirecting pulley 234 may be rotatably connected to the fixed portion 110. A rope 230 may be routed around the redirecting pulley 234 between the first portion 230A and the second portion 230B. For example... Figure 6 As illustrated, the first portion 230A of the rope 230 can be oriented at a rope angle 236 relative to the arm 204. The rope angle 236 can be defined by the positions of the redirecting pulley 234 and the first latch 231. The rope angle 236 can change as the arm 204 rotates about the first hinge 208, causing the orientation of the first latch 231 relative to the redirecting pulley 234 to change. The redirecting pulley 234 can redirect the rope 230 such that the second portion 230B of the rope 230 can extend between the redirecting pulley 234 and the movable portion 120 in a direction parallel to the direction of movement 237 of the movable portion 120.

[0063] A force (e.g., gas spring force 226) generated by the energy storage member 220 can act on the arm 204 at the second hinge 222. The gas spring force 226 can apply a first torque 238 to the arm in a clockwise direction. A rope force 239 supported by the rope 230 can act on the arm 204 at the first latch 231. The rope force 239 can apply a second torque 240 to the arm 204 in a counterclockwise direction. The first torque 238 and the second torque 240 can be equal to keep the arm 204 balanced. Based on the balance of the arm 204, the rope force 239 can be calculated for the gas spring force 226 at a certain position of the arm 204 (e.g., at arm angle 209). The rope force 239 can be equal to the lifting force 203. Although the gas spring force 226 varies during the rotation of the arm 204 as the movable part 120 translates along the travel range 201 (e.g., due to the change in the second distance 228), the rope force 239 (or lifting force 203) can be substantially constant (e.g., due to changes in the spring angle 227 and the rope angle 236).

[0064] A portion of the force generated by the energy storage member 220 (e.g., gas spring force 226) may be supported by the rope 230 (e.g., rope force 239 defined by torque balance as discussed in the previous section). The rope force 239 may define a lifting force 203. The lifting force 203 may counteract at least a portion of the combined weight 205 coupled to the movable part 120 (e.g., counteracting the combined weight of the movable part 120 and the weight of one or more loads 130 coupled to the movable part 120).

[0065] Figure 7 This is a schematic diagram of a lifting mechanism 100 according to another exemplary configuration of the present disclosure. In some exemplary configurations, the lifting mechanism 100 may include a freewheeling pulley 242. The freewheeling pulley 242 may be coupled to the arm 204 near a second portion 204B of the arm 204. A balancing mechanism 150 may be operably coupled to a movable portion 120 via a rope 244. The rope 244 may extend between a first portion 244A and a second portion 244B. The first portion 244A may be coupled to a fixed portion 110 at a first latch 246, and the second portion 244B may be coupled to the movable portion 120 at a second latch 247. The rope 244 may be arranged around the freewheeling pulley 242 and the redirecting pulley 234 between the first portion 244A and the second portion 244B. A portion of the gas spring force 226 generated by the gas spring 221 may be supported by the rope 244 for defining a lifting force 203 as described below.

[0066] like Figure 7As illustrated, the rope 244 may include a first segment 248 and a second segment 249 located between a first portion 244A and a second portion 244B. The first segment 248 may extend between a first latch 246 and a freewheeling pulley 242, and the second segment 249 may extend between the freewheeling pulley 242 and the movable portion 120. The first segment 248 may be oriented relative to the arm 204 at a first rope angle 251, and the second segment 249 may be oriented relative to the arm 204 at a second rope angle 252. The first rope angle 251 and the second rope angle 252 may vary as the arm 204 rotates about the first hinge 208.

[0067] The second segment 249 can be redirected around the redirection pulley 234 before it can be connected to the movable part 120. The second portion 244B of the rope 244 can be parallel to the direction of movement 237 of the movable part 120. As the movable part 120 translates along the travel range 201, the arm 204 can rotate (e.g., in the first direction 210), and a portion of the first segment 248 can be displaced on the idle pulley 242 to the second segment 249 to achieve the translation 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 the lifting force 203 can be equal to the second rope force 256. The lifting force 203 can act on the movable part 120 to offset at least a portion of the combined weight 205 of the movable part 120 and the weight of one or more loads 130 connected to the movable part 120.

[0068] like Figure 7 As illustrated, a gas spring force 226 can act on the arm 204 at the second hinge 222 to apply a first torque 238 to the arm 204 in a clockwise direction. A first rope force 254 and a second rope force 256 can act on the arm 204 via a freewheeling pulley 242 to apply a second torque 240 to the arm 204 in a counterclockwise direction. The first torque 238 and the second torque 240 can be equal to keep the arm 204 balanced. Based on the balance 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, by considering the first rope angle 251 and the second rope angle 252 in this instance of arm angle 209). Although the gas spring force 226 varies due to changes in the first rope angle 251, the second rope angle 252, and the spring angle 227, the first rope force 254 and the second rope force 256 (and therefore the lifting force 203) can be substantially constant.

[0069] Figures 8 to 12These are schematic diagrams of lifting mechanisms 101, 102, and 103 according to some example configurations of this disclosure. Lifting mechanisms 101, 102, and 103 may have a fixed portion 110 and a movable portion 120. The fixed portion 110 may extend between a first portion 110A and a second portion 110B. The fixed portion 110 may be mounted on structure 140 (e.g., as in...). Figure 3 The wall 173 shown in the figure, as in Figure 2 On the base 163 with wheels shown in the figure, and one or more loads 130 (e.g., as in the figure) Figure 2 The electronic display 167 or platform 164 shown in the figure, as in Figure 3 The working surface 174 (as shown) can be coupled to the movable portion 120. The movable portion 120 is configured to translate relative to the fixed portion 110 along a travel range 201 to provide height adjustment for one or more loads 130 coupled to the movable portion 120. The movable portion 120 can translate between a high position 201A in which the movable portion 120 is close to the first portion 110A and a low position 201B in which the movable portion 120 is close to the second portion 110B. (Regarding...) Figures 6 to 7 The various aspects of the lifting mechanism 100 described in the previous section can be used for Figures 8 to 12 In the configuration shown in the figure.

[0070] In some example configurations, one or more guide members 260 may be coupled between the fixed portion 110 and the movable portion 120. One or more guide members 260 may be adapted to guide the movable portion 120 during translation relative to the fixed portion 110. One or more guide members 260 may include, but are not limited to, sliders (e.g., as in…). Figure 10 The first slider 261 and the second slider 262 shown in the figure, the slider, the roller, etc.

[0071] Figures 8 to 10 The lifting mechanisms 101, 102, and 103 can each include balancing mechanisms 151, 152, and 153, respectively. The balancing mechanisms 151, 152, and 153 can be similar to... Figure 7 The balancing mechanism 150. Balancing mechanisms 151, 252, and 153 can be positioned in different orientations relative to the fixed portion 110 and the movable portion 120; however, Figure 7 One or more aspects of the balancing mechanism 150 can be applied to Figures 8 to 10 The balancing mechanisms are 151, 152, and 153. In some example configurations, such as... Figures 8 to 10As illustrated, balancing mechanisms 151, 152, and 153 may be located near the first portion 110A of the fixing member 110. In other example configurations, the balancing mechanism may be located near the second portion 110B of the fixing member 110.

[0072] In some example configurations, such as Figures 8 to 9 As illustrated, the first hinge 208 located near the first portion 204A of the arm 204 can be positioned away from the first portion 110A of the fixed portion 110, and the arm 204 can extend from the first hinge 208 toward the first portion 110A of the fixed portion 110, thereby allowing the second portion 204B of the arm 204 to be positioned close to the first portion 110A of the fixed portion 110. In other configurations, such as Figure 10 As illustrated, the first hinge 208 can be positioned close to the first portion 110A of the fixed portion 110, and the arm 204 can extend from the first hinge 208 away from the first portion 110A of the fixed portion 110, thereby positioning the second portion 204B of the arm 204 close to the center of the fixed portion 110. It is understood that the balancing mechanism can be positioned relative to the fixed portion 110 and the movable portion 120 in many other orientations. In each configuration, the balancing mechanism can be operably coupled to the movable portion 120 via a rope 244. When the movable portion 120 translates from a high position 201A to a low position 201B, the arm 204 can rotate in a first direction 210. The energy storage member 220 can bias the arm 204 to rotate in a second direction opposite to the first direction 210.

[0073] Figures 11 to 12 These are schematic diagrams of lifting mechanisms 104 and 105 according to some example configurations of this disclosure. In some example configurations, lifting mechanisms 104 and 105 may include a transition pulley assembly 264. For example... Figures 11 to 12 As illustrated, the transition pulley assembly 264 may be located near the first portion 110A of the fixed portion 110. The transition pulley assembly 264 may be rotatably coupled to the fixed portion 110. The transition pulley assembly 264 may include a first pulley 265 and a second pulley 266. The first pulley 265 may have a larger diameter than the second pulley 266. The first pulley 265 may be coaxial with the second pulley 266, and the first pulley 265 and the second pulley 266 may rotate uniformly about a common axis 267 relative to the fixed portion 110.

[0074] In some example configurations, such as Figure 11 As illustrated, the balancing mechanism 154 can be located near the second part 110B of the fixed part 110, and in other configurations, such as Figure 12As illustrated, the balancing mechanism 155 may be located near the first portion 110A of the fixed portion 110. The lifting mechanisms 104, 105 may include a first rope 268 and a second rope 269. One end of the first rope 268 may be connected to the fixed portion 110 at a first latch 246. The first rope 268 may be routed around the idle pulley 242 and optionally around the redirecting pulley 234, and the other end of the first rope 268 may be connected to the second pulley 266 of the transition pulley assembly 264. One end of the second rope 269 may be connected to the movable portion 120 at a second latch 247, and the other end of the second rope 269 may be connected to the first pulley 265 of the transition pulley assembly 264. When the movable portion 120 is in a high position 201A (e.g., when the movable portion 120 is close to the first portion 110A of the fixed portion 110), the second rope 269 may be wound around the first pulley 265. When the movable part 120 translates relative to the fixed part 110 within the travel range 201, the movable part 120 can pull the second rope 269 to rotate the transition pulley assembly 264 clockwise. When the transition pulley assembly 264 rotates clockwise, the first rope 268 can be wound around the second pulley 266, thereby enabling the arm 204 to rotate about the first hinge 208 in the first direction 210.

[0075] Figures 8 to 12 An energy storage member 220 (e.g., a gas spring 221) can be coupled between the arm 204 and the adjusting mechanism 206. The energy storage member 220 can apply a force (e.g., a gas spring force 226) to the arm 204, thereby biasing the arm 204 in a direction opposite to the first direction 210. Depending on the balance of the arm 204, the spring force 226 can be converted into a lifting force 203 as discussed in the preceding sections. If the lifting mechanism 100 includes... Figures 11 to 12 As illustrated in the transition pulley assembly 264, the lifting force 203 can be adjusted by the ratio of the radius of the second pulley 266 to the radius of the first pulley 265. The lifting force 203 can be applied to the movable part 120 to counteract the combined weight 205 of one or more loads 130 coupled to the movable part 120 and a portion of the weight of the movable part 120.

[0076] Figure 13 This is a schematic diagram of a lifting mechanism 300 according to yet another example configuration of this disclosure. Figure 13 The lifting mechanism 300 may include Figure 7The lifting mechanism 300 may include one or more aspects of the lifting mechanism 100. The lifting mechanism 300 may have a fixed portion 110 coupled to the structure 140, a movable portion 120 adapted to receive one or more loads 130, and a balancing mechanism 350. The movable portion 120 may be configured to translate relative to the fixed portion 110 along a travel range 201 between a high position 201A and a low position 201B. The movable portion 120 may provide height adjustment relative to the structure 140 for one or more loads 130 coupled to the movable portion 120.

[0077] In some example configurations, the balancing mechanism 350 may include an arm 204, a first energy storage member 302, an adjustment mechanism 206, and an assist assembly 304. The arm 204 may be rotatably connected to the fixed portion 110 about a first hinge 208. The arm 204 may be operably connected to the movable portion 120 via a rope 244. The rope 244 may be connected to the fixed portion 110 at a first latch 246 and to the movable portion 120 at a second latch 247. Figure 13 As illustrated, rope 244 can be arranged around idle pulley 242 and redirecting pulley 234 between first latch 246 and second latch 247. Arm 204 can be configured to rotate in a first direction 210 when the movable part is translated from high position 201A to low position 201B.

[0078] The adjustment mechanism 206 may include a first support 310 and a slider 214. The first support 310 may be coupled with... Figure 7 The first bracket 310 is fixedly attached to the fixed portion 110. The slider 214 can be slidably engaged with the first bracket 310. The adjusting mechanism 206 may include a first screw 311. The first screw 311 can be rotatably connected to the first bracket 310 and threadedly engaged with the slider 214.

[0079] The first energy storage member 302 may be connected at one end to the arm 204 at the second hinge 222 and at the other end to the slider 214 at the third hinge 224. The first energy storage member 302 may be one of a gas spring 221, a tension spring, a compression spring, etc. As described in the previous section, the first energy storage member 302 may indirectly define a portion of the lifting force 203. The first screw 311 is configured to translate the slider 214 relative to the first support 310 to change the spring angle 227 between the first energy storage member 302 (e.g., gas spring 221) and the arm 204.

[0080] like Figure 13As illustrated, the booster assembly 304 can be coupled to the fixed portion 110 at one end and rotatably coupled to the arm 204 at the fourth hinge 312 at the other end. As will be apparent in the following sections, the booster assembly 304 can apply additional force to the arm 204 to increase the lifting force 203.

[0081] The booster assembly 304 may include a second energy storage member 306. The second energy storage member 306 may include a gas spring, a tension spring, a compression spring, etc. In some example configurations, the second energy storage member 306 may be selectively activated to enable the lifting of heavier loads.

[0082] In some example configurations, the second energy storage member 306 may include one or more springs 314 (e.g., one or more tension springs). One or more springs 314 may 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 may be coupled to the fixed portion 110, and the second spring plate 316 may be rotatably coupled to the arm 204 at the fourth hinge 312.

[0083] In some example configurations, the balancing mechanism 350 may also include a second support 318. The second support 318 may be fixedly attached to the fixed portion 110. A second screw 319 may be rotatably connected to the second support 318 and threadedly engaged with the first spring plate 315. The second screw 319 may be configured to cause the first spring plate 315 to translate along the axial direction of the second screw 319 when the second screw 319 rotates, thereby enabling adjustment of the tension of one or more springs 314.

[0084] The first force 321 generated by the first energy storage component 302 (e.g., similar to...) Figure 7 The gas spring force 226 and the second force 322 generated by the second energy storage member 306 (e.g., the force generated by one or more springs 314) can apply a first torque 325 to the arm 204 in a second direction opposite to the first direction 210. The first rope force 254 and the second rope force 256, respectively carried by the first segment 248 and the second segment 249 of the rope 244, can apply the second torque 326 to the arm 204 in the first direction 210. The first rope force 325 and the second rope force 326 can be equal. In order to keep the arm 204 balanced, the first torque 325 can be equal to the second torque 326, and therefore, the first rope force 325 and the second rope force 326 can be calculated based on the balance 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 a portion of the combined weight 205 connected to the movable part 120.

[0085] Figures 14 to 15 This is a schematic diagram of an booster assembly 304 according to an exemplary configuration of the present disclosure. The booster assembly 304 may 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 may be concentric about the booster axis 335.

[0086] 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 connected at the first ring 336 to the fixed portion 110 (e.g., with...). Figure 13 The second support 318 is rotatably connected. The second end 331B of the first tube 331 may be open, and the second end 331B may be adapted to receive the second tube 332.

[0087] The second tube 332 can extend between the first end 332A and the second end 332B. The first end 332A of the second tube 332 can be adapted to be inserted into the first tube 331 through an opening on the second end 331B of the first tube 331. The second end 332B of the second tube 332 can be closed, and an orifice 337 can be formed on the second end 332B. The second tube 332 can be at least partially located inside the first tube 331. The second tube 332 can be slidably engaged with the first tube 331, and the second tube 332 can be configured to translate relative to the first tube 331 along the booster axis 335.

[0088] 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 an aperture 337 located at the second end 332B of the second tube 332. The rod 333 can be at least partially located 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 extend out 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 connected to the arm 204 at the second ring 338 (e.g., rotatably connected to the arm 204 at the fourth hinge 312). The rod 333 can be slidably engaged with the second tube 332, and the rod 333 can be configured to translate relative to the second tube 332 along the booster axis 335.

[0089] The first tube 331, the second tube 332, and the rod 333 can be slidably joined together to form a nested telescopic tube assembly 339. For example... Figure 15As illustrated, the second tube 332 can extend from the first tube 331, and the rod 333 can extend from the second tube 332. The telescopic tube assembly 339 can be connected to the second bracket 318 (e.g., Figure 13 (as shown in the figure) between and the fourth hinge 312 located on the arm 204.

[0090] The rod 333 can be connected to a first support member 340 and a second support member 342 near the first end 333A and the second end 333B, respectively. For example... Figure 14 As illustrated, the first support 340 may be located inside the second tube 332 near the first end 332A, and the second support 342 may be located outside the second tube 332 near the second end 332B. The second end 332B of the second tube 332 may be adapted to rest on the second support 342.

[0091] The booster assembly 304 may also include a compression spring 345. The compression spring 345 may be located inside the second tube 332 and may be concentric with the second tube 332. A rod 333 may be at least partially located inside the compression spring 345. The compression spring 345 may be coupled at one end to the first support 340 and at the other end to a second end 332B of the second tube 332. In some example configurations, the compression spring 345 may be compressed between the first support 340 and the second end 332B of the second tube 332 to bias the second tube 332 toward the second support 342.

[0092] The booster assembly 304 can be configured to form an approach angle 347 between the nested telescopic tube assembly 339 and the arm 204. For example... Figures 14 to 15 As illustrated, the approach angle 347 can vary as the arm 204 rotates about the first hinge 208 in the first direction 210.

[0093] In some exemplary configurations, such as Figure 15 As illustrated, the booster assembly 304 may include a fastener 348. The fastener 348 may be coupled to a first tube 331 and selectively coupled to a second tube 332. The fastener 348 may be a mechanical component, including but not limited to fasteners, hooks, latches, straps, bolts, etc. The fastener 348 may be coupled to an actuator (e.g., a mechanical actuator, including but not limited to handles, levers, etc., or an electronic actuator, including but not limited to electric motors, solenoids, etc.).

[0094] The booster assembly 304 can have a locking configuration and an unlocking configuration. In the locking configuration of the booster assembly 304, the fastener 348 can be adapted to engage with both the first tube 331 and the second tube 332, thereby fixing the second tube 332 relative to the first tube 331. In the unlocking configuration of the booster assembly 304, the fastener 348 can be disengaged from one or both of the first tube 331 and the second tube 332. In the unlocking configuration, the second tube 332 can translate freely relative to the first tube 331 along the booster axis 335. The fastener 348 can be selectively actuated to place the booster assembly 304 in the locking configuration.

[0095] In some example configurations, fastener 348 can be actuated when the movable portion 120 is in the high position 201A. When fastener 348 is actuated, booster assembly 304 can be activated to provide additional lifting force 203. Figure 15 As illustrated, when the booster assembly 304 is activated, the second tube 332 cannot translate relative to the first tube 331 when the arm 204 rotates along the first direction 210 during translation of the movable portion 120. However, the rod 333 is coupled to the arm 204, and when the arm 204 rotates in the first direction 210, the rod 333 can translate relative to the second tube 332. Figure 15 As illustrated, the distance between the first support 340 and the second end 332B of the second tube 332, where the compression spring 345 is positioned, can be reduced, resulting in compression of the compression spring 345. Therefore, 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., along the direction of the booster axis 335). Figure 13 and Figure 15 As illustrated, the second force 322 generated by the booster assembly 304 can be applied to the arm 204 at the fourth hinge 312.

[0096] Figure 16 It is by Figure 13 A graphical representation of the lifting force 203 generated by the balancing mechanism 350. The lifting force 203 can be applied to the movable portion 120 to counteract at least a portion of the combined weight 205 (e.g., counteracting the combined weight of one or more loads 130 coupled to the movable portion 120 and the weight of the movable portion 120) throughout the entire travel range 201 of the movable portion 120 from the high position 201A to the low position 201B. Although the first force 321 (e.g., by...) Figure 13 The gas spring force 226 generated by the gas spring 221 increases and is increased by Figure 13 The second force 322 generated by one or more springs 314 increases, but the lifting force 203 can be constant.

[0097] The lifting force 203 can have a low force range 360 ​​and a high force range 365. When the booster assembly 304 is deactivated (e.g., the fastener 348 is not actuated and the second tube 332 can move relative to the first tube 331), the lifting force 203 can be generated solely by the first energy storage member 302 (e.g., by the gas spring 221), and therefore the lifting force 203 can be in the low force range 360. The third hinge 224 can be oriented between a minimum adjustment configuration and a maximum adjustment configuration by manipulating the adjustment mechanism 206 (e.g., by moving the third hinge 224 toward or away from the first hinge 208 by means of rotating the first screw 311). When the booster assembly 304 is activated (e.g., fastener 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 member 302 and the booster assembly 304, and therefore the lifting force 203 can be in the high force range 365. When activated, the booster assembly 304 can cause a force increase 369 to place the lifting force 203 in the high force range 365. In the high force range 365, the adjustment mechanism 206 can still be manipulated (e.g., by rotating the first screw 311) to change the lifting force 203 between a minimum lifting force 365A and a maximum lifting force 365B within the high force range 365.

[0098] Figure 17 The lifting mechanism 401 is based on the example configuration of this disclosure (e.g., Figure 4 A schematic diagram of the lifting mechanism 100 of the independent workstation 180. The lifting mechanism 401 can be used in relation to... Figures 6 to 16 The lifting mechanism 401 may include one or more aspects of the lifting mechanism discussed in the previous sections. The lifting mechanism 401 may include a balancing mechanism 450, one or more leg assemblies 420, and a height adjustment mechanism 425. The height adjustment mechanism 425 may be at least partially located within one or more leg assemblies 420 and operably coupled between one or more leg assemblies 420 and the balancing mechanism 410. The one or more leg assemblies 420 may be constructed in various forms, including but not limited to two-piece nested telescopic legs (e.g., Figure 22 Leg components 500), three-component nesting telescopic legs (e.g., Figure 23 Leg components 520, etc. For example... Figures 22 to 23 As illustrated, the height adjustment mechanism 425 can also take different forms depending on the configuration of one or more leg components 420.

[0099] The balancing mechanism 410 can be connected to the lower side 404 of the working surface 402 (e.g., connected to...). Figure 4The lower side 188 of the working surface 175 of the stand-alone workstation 180. In some example configurations, such as Figure 17 As shown in the figure, frame 406 can be connected to lower part 404, and balancing mechanism 410 can be connected to frame 406.

[0100] In some example configurations, one or more leg components 420 may include a first component 421, a second component 422, and a third component 423. For example... Figure 20 As illustrated, the first component 421, the second component 422, and the third component 423 can be slidably engaged with each other to adjust the height of one or more leg assemblies 420. The third component 423 can be coupled to the working surface 402, and the first component 421 can be coupled to one or more feet 428 (e.g., ...). Figure 20 (As shown in the diagram). In other example configurations, one or more leg assemblies 420 may include a first member 421 and a second member 422. The second member 422 may be slidably engaged with the first member 421. The second member 422 may be coupled to a work surface 402, and the first member 421 may be coupled to one or more feet 428. One or more feet 428 may be positioned on a base plate 429. The work surface 402 coupled to one or more leg assemblies 420 and one or more feet 428 may form a freestanding workstation 400.

[0101] Height adjustment mechanism 425 (e.g., Figures 22 to 23 The height adjustment mechanisms 503 and 524 may be at least partially located within one or more leg assemblies 420. In some example configurations, the height adjustment mechanism 425 may include a synchronizing rod 430. The synchronizing rod 430 may extend between the first leg assembly 420A and the second leg assembly 420B and is capable of synchronizing the movement of the first leg assembly 420A with the movement of the second leg assembly 420B. The height adjustment mechanism 425 may cooperate with the balancing mechanism 410 to adjust the length of one or more leg assemblies 420 to provide height adjustment of the frame 406 and the working surface 402 relative to the base plate 429.

[0102] In some example configurations, such as Figure 17 As illustrated, the balancing mechanism 410 may include an arm 411, a gas spring 412, and an adjusting mechanism 413. The balancing mechanism 410 can use... Figure 7One or more aspects of the balancing mechanism 150. Arm 411 may be rotatably coupled to frame 406 at first hinge 415. Arm 411 may be operably coupled to one or more leg assemblies 420, and arm 411 may be configured to rotate in a first direction 417 or in a second direction opposite to the first direction 417 as frame 406 and working surface 402 are conveyed toward or away from base plate 429, respectively.

[0103] Adjustment mechanism 413 can be coupled to frame 406, and gas spring 412 can be coupled between arm 411 and adjustment mechanism 413. Adjustment mechanism 413 can be configured as discussed in the previous sections to adjust the angle between gas spring 412 and arm 411 (e.g., change the angle between them). Figure 6 (Spring angle 227). Gas spring 412 can bias arm 411 to rotate in a second direction opposite to the first direction 417.

[0104] In some example configurations, the height adjustment mechanism 425 may include a drive pulley assembly 437. For example... Figure 17 As illustrated, the drive pulley assembly may include a wheel 431 and one or more bushings 432 coupled to a synchronizer bar 430. The synchronizer bar 430 may extend along a bar axis 433 between a first end 430A and a second end 430B. One or more bushings 432 having orifices 434 may be securely attached to a frame 406. In other example configurations, one or more bushings 432 may be directly coupled to the underside 404 of the working surface 402. The wheel 431 may be concentric with the synchronizer bar 430, and the wheel 431 may be securely attached to the synchronizer bar 430 between the first end 430A and the second end 430B.

[0105] The synchronizing rod 430 can be inserted through orifices 434 located on one or more bushings 432. One or more bushings 432 can hold the synchronizing rod 430 at a distance from the lower side 404 of the working surface 402, and allow the synchronizing rod 430 to rotate freely about its axis 433 relative to the working surface 402. The wheel 431 can be adapted to rotate synchronously with the synchronizing rod 430 relative to the working surface 402.

[0106] The rod axis 433 may be substantially horizontal and parallel to the working surface 402. The synchronizing rod 430 may be made of engineering materials including, but not limited to, steel rods or tubes, aluminum rods or tubes, etc. A key 435 (e.g., a key shaped as a square, rectangle, hexagon, star, ellipse, triangle, polygon, etc.) may be formed near the first end 430A and the second end 430B of the synchronizing rod 430. The key 435 may be adapted to engage with one or more leg assemblies 420.

[0107] The synchronizing rod 430 can be connected to one or more leg assemblies 420 (e.g., connected to the first leg assembly 420A and the second leg assembly 420B near the first end 430A and the second end 430B of the synchronizing rod 430, respectively). When the working surface 402 translates relative to the base plate 429, the synchronizing rod 430 can cooperate with one or more leg assemblies 420 to rotate about the rod axis 433 relative to the working surface 402.

[0108] In some example configurations, the balancing mechanism 410 may include a freewheeling pulley 440, a redirecting pulley 441, and a rope 442 (e.g., a rope, chain, cable, cord, etc.). The freewheeling pulley 440 may be rotatably coupled to the arm 411, and the redirecting pulley 441 may be rotatably coupled to the frame 406. One end of the rope 442 may be coupled to the frame 406 (or to the underside 404) at a first latch 443. The first latch 443 may be a hook, clamp, strap, etc. The rope 442 may be arranged around the freewheeling pulley 440 and the redirecting pulley 441, and the other end of the rope 442 may be coupled to the wheel 431. The rope 442 may be configured to wind around the wheel 431 as the working surface 402 translates toward the base plate 429 and to unwind from the wheel 431 as the working surface 402 translates away from the base plate 429.

[0109] One or more leg components 420 can be height-adjustable (e.g., can be as follows). Figure 4 (As illustrated in the figure, it is retractable and adjustable). One or more leg assemblies 420 may be adapted to translate the frame 406 and the working surface 402 relative to the base plate 429. A height adjustment mechanism 425 may be at least partially located inside one or more leg assemblies 420. The height adjustment mechanism 425 may include a drive pulley 445. The drive pulley 445 may be rotatably coupled to one or more leg assemblies 420 near the working surface 402 (e.g., rotatably coupled to...). Figure 4 The third component 185 of one or more leg assemblies 181 of the stand-alone workstation 180. The drive pulley 445 can be operably coupled to the height adjustment mechanism 425 of one or more leg assemblies 420 (e.g., Figures 22 to 23 Height adjustment mechanisms 503 and 524). When the height of one or more leg assemblies 420 is adjusted, the drive pulley 445 can rotate relative to one or more leg assemblies 420 about the drive pulley axis 446. The drive pulley axis 446 can be substantially horizontal.

[0110] An opening 447 may be formed near the center of the drive pulley 445 (e.g., Figure 22 The aperture 515 shown in the figure Figure 23(See aperture 536 shown). Aperture 447 may have a key shape (e.g., square, rectangular, hexagonal, star-shaped, etc.) that matches the key 435 formed on the synchronizing rod 430 near the first end 430A and the second end 430B. Aperture 447 may be adapted to receive key 435. The drive pulley axis 446 may coincide with the rod axis 433. The drive pulley 445 may be configured to rotate the synchronizing rod 430 and drive the balancing mechanism 410 (activate balancing mechanism 410, move balancing mechanism 410, etc.) when the working surface translates relative to the base plate 429.

[0111] Figures 18 to 19 This is a schematic diagram of a balancing mechanism 450 according to some example configurations of this disclosure. The balancing mechanism 450 may include a main support 451. The main support 451 may be coupled to the lower side of the working surface (e.g., coupled to...). Figure 4 The lower side 188 of the working surface 175. In some example configurations, the main support 451 may include a first support 452, a second support 453, and a third support 454 for attaching 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 may be fixedly attached to the main support 451. In other example configurations, the first support 452, the second support 453, and the third support 454 may be formed from the main support 451 (e.g., by bending, stamping, extrusion, etc.).

[0112] The balancing mechanism 450 may also include a gas spring 455, an arm 460, an assist assembly 470, and an adjustment mechanism 480. The arm 460 may be rotatably connected to the main support 451 at a first hinge 461 located near one end of the arm 460, and an extension support 462 may be fixedly attached near the other end of the arm 460. The extension support 462 may facilitate the connection of one or more components of the balancing mechanism to the arm 460. In other exemplary configurations, the arm 460 and the extension support 462 may be formed in a single component. In other exemplary configurations, the extension support 462 may be omitted, and one or more components of the balancing mechanism 450 may be directly connected to the arm 460.

[0113] The balancing mechanism 450 can be operably coupled to the height adjustment mechanism 425 to adjust one or more loads coupled to the lifting mechanism (e.g., coupled to...). Figure 4The lifting mechanism 100 provides lifting assistance during height adjustment of its working surface 175. When the height of the load is adjusted, the arm 460 may be adapted to rotate in a first direction 463 or in a second direction opposite to the first direction 463 (e.g., the arm 460 may rotate in the first direction 463 when the load is lowered and in the second direction when the load is raised). The balancing mechanism 450 may counteract at least a portion of the weight of the load coupled to the lifting mechanism.

[0114] Adjustment mechanism 480 may be coupled to main support 451 near first hinge 461. Adjustment mechanism 480 may include slider 481 and first screw 482. Slider 481 may be slidably engaged with first support 452. First screw 482 may be coupled to first support 452 and threadedly engaged with slider 481. Slider 481 is configured to translate relative to first support 452 when first screw 482 rotates.

[0115] The gas spring 455 may be coupled at one end to the extension bracket 462 at the second hinge 456, and at the other end to the slider 481 at the third hinge 457. The gas spring 455 may be configured to bias the arm 460 to rotate in a second direction opposite to the first direction 463.

[0116] The slider 481 can be translated relative to the first support 452 to change the spring angle 484 between the gas spring 455 and the arm 460. For example... Figure 16 As illustrated, slider 481 can be in a minimum adjustment configuration (e.g., slider 481 is close to the first hinge 461) and a maximum adjustment configuration (e.g., as shown in the figure). Figure 18 As shown in the figure, the slider is translated between the first hinge 461 (farthest from the first hinge) to adjust the lifting force 203 generated by the balancing mechanism 410.

[0117] The booster assembly 470 may be operably coupled to the main support 451 at one end and operably coupled to the extension support 462 at the fourth hinge 458 at the other end. The booster assembly 470 may include one or more springs 472 (e.g., one or more tension springs). One or more springs 472 may be coupled to a first spring plate 473 at one end and to a second spring plate 474 at the other end. The first spring plate 473 may be coupled to the second support 453 via a second screw 475. The second screw 475 may be rotatably coupled to the second support 453 and threadedly engaged with the first spring plate 473. The second screw 475 may be adapted to adjust the tension of one or more springs 472. When the second screw 475 rotates relative to the second support 453, the first spring plate 473 may move toward or away from the second support 453 to increase or decrease the tension on one or more springs 472, respectively. One or more springs 472 may be configured to bias the arm 460 to rotate in a second direction opposite to the first direction 463.

[0118] The balancing mechanism 450 may also include one or more redirecting pulleys (e.g., a first redirecting pulley 485 and a second redirecting pulley 486) and a freewheeling pulley 487. The first redirecting pulley 485 and the second redirecting pulley 486 may be rotatably coupled to the main support 451, and the freewheeling pulley 487 may be rotatably coupled to the extension support 462. In some example configurations, one or more redirecting pulleys may be indirectly coupled to the main support 451 (e.g., as shown in the image). Figure 18 As shown in the diagram, the second redirecting pulley 486 can be connected to the third bracket 454.

[0119] The balancing mechanism 450 can be operably connected to the height adjustment mechanism 425 via a rope 490. The rope 490 can be an elongated member extending between a first portion 491 and a second portion 492. The first portion 491 of the rope 490 can be operably connected to the main support 451, and the second portion 492 of the rope 490 can be operably connected to the height adjustment mechanism 425 (e.g., connected to...). Figure 17 (Reel 431). Rope 490 can be laid around the first redirecting pulley 485, the idle pulley 487, and the second redirecting pulley 486 between the first part 491 and the second part 492. Rope 490 can be made of engineering materials including but not limited to steel cables, tensile polymer ropes, chains, and cords.

[0120] The first portion of the rope 490 can be connected to the main support 451 via eye bolts 493. In some example configurations, such as... Figure 18As illustrated, an eye bolt 493 can be connected to a third bracket 454. The eye bolt 493 may have a threaded shaft 494 and a ring 495. The threaded shaft 494 may extend laterally from the ring 495. A first portion 491 of the rope 490 may be connected to the ring 495. The threaded shaft 494 can be inserted through an opening 459 located on the third bracket 454, and a nut 496 can be threadedly engaged with the threaded shaft 494. A portion of the third bracket 454 may be at least partially located between the ring 495 and the nut 496. The nut 496 may be positioned on the threaded shaft 494 of the eye bolt 493 such that the ring 495 can be positioned at a desired distance from the third bracket 454 to eliminate the possibility of the rope 490 being operably connected to the main bracket 451 and the height adjustment mechanism (e.g., Figure 17 The slack that occurs when the height adjustment mechanism 425 is between.

[0121] During height adjustment of the working surface 402, the synchronizing rod 430, connected to the drive pulley 445, can rotate, causing the wheel 431 to rotate. The rotation of the wheel 431 can be configured such that the second portion 492 of the rope 490 can be wound around the wheel 431 as the working surface 402 descends. Therefore, the height adjustment mechanism 425 can pull the second portion 492 of the rope 490 in a second direction 497 during the translation of the working surface 402 toward the base plate 429. Figure 19 As illustrated, arm 460 can rotate in a first direction 463 to enable the lowering of the working surface 402.

[0122] The gas spring 455 can be compressed between the second hinge 456 and the third hinge 457 to generate a first force 465 (e.g., similar to...). Figure 13 The first force 321), and one or more springs 472 may 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...). Figure 13 The second force (322). For example... Figures 18 to 19 As illustrated, a first force 465 can be applied to the second hinge 456, and a second force 466 can be applied to the fourth hinge 458. Depending on the balance of the arm 460, the first force 465 and the second force 466 can define a rope force 467 (e.g., as discussed in the previous sections). Figure 13 The second rope force is 256). (e.g., the second rope force is 256). Figure 24 As illustrated, rope force 467 can be applied to wheel 431.

[0123] Figures 20 to 21These are front and bottom views of a freestanding workstation 400 according to an example configuration of this disclosure. The freestanding workstation 400 may include a lifting mechanism 401, which includes one or more leg assemblies 420 and a height adjustment mechanism 425 (e.g., Figure 23 Height adjustment mechanism 524) and balancing mechanism 450 (e.g., Figure 18 The balancing mechanism 450).

[0124] Figure 18 The main support 451 of the balancing mechanism 450 can be connected to the lower side 404 of the working surface 402. One or more bushings 432 can be connected to the lower side 404. One or more bushings 432 can hold the synchronizing rod 430 at a distance from the lower side 404. A wheel 431 can be connected to the synchronizing rod 430. The wheel 431 and the synchronizing rod 430 can be configured to rotate uniformly about the rod axis 433 relative to the working surface 402. The balancing mechanism 450 can be operably connected to the wheel 431 via a rope 490. The wheel 431 can be positioned on the synchronizing rod 430 such that a second portion 492 of the rope 490 can be aligned with the wheel 431.

[0125] One or more leg assemblies 420 (e.g., first leg assembly 420A and second leg assembly 420B) may be coupled to the lower side 404. In some example configurations, one or more leg assemblies 420 may be directly coupled to the lower side 404 at one end using one or more fasteners 498, and coupled to one or more feet 428 (e.g., first foot 428A and second foot 428B) at the other end. One or more leg assemblies 420 may include a height adjustment mechanism 425. The height adjustment mechanism 425 may be at least partially housed within one or more leg assemblies 420. The height adjustment mechanism 425 housed within the first leg assembly 420A and second leg assembly 420B may be synchronized via a synchronizing rod 430. The height adjustment mechanism 425 may be configured such that a working surface 402 provides height adjustment relative to one or more feet 428. The height adjustment mechanism 425 may be coupled to a balancing mechanism 450 to counteract the weight of components coupled to the lifting mechanism 401.

[0126] 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 to be coupled to the first leg assembly 420A at the first end 430A and to the second leg assembly 420B at the second end 430B. A key 435 (e.g., a key with a shape of square, rectangle, hexagon, star, etc.) can be formed on the synchronizing rod 430 near the first end 430A and the second end 430B. The key 435 located on the synchronizing rod 430 can engage with a height adjustment mechanism 425 located inside one or more leg assemblies 420.

[0127] Figure 22 This is a schematic diagram of a leg assembly 500 according to an exemplary configuration of the present disclosure. The leg assembly 500 may include a first member 501 and a second member 502 slidably engaged with the first member 501. The first member 501 may extend between a first portion 501A and a second portion 501B. The second member 502 may extend between the first portion 502A and the second portion 502B. In some exemplary configurations, the first member 501 may be at least partially located inside the second member 502 (e.g., the second portion 501B of the first member 501 may be located inside the first portion 502A of the second member 502). In other exemplary configurations, the second member 502 may be at least partially located inside the first member 501.

[0128] The first component 501 may be coupled to the working surface near the first part 501A (e.g., coupled to...). Figure 20 The working surface 402), and the second member 502 can be coupled to the foot (e.g., coupled to) near the second part 502B. Figure 20 One or more feet 428). The first member 501 may be configured to translate relative to the second member 502 to adjust the distance between the first portion 502A of the first member 501 and the second portion 502B of the second member 502, and thus, the leg assembly 500 may provide height adjustment of the working surface 402 relative to the feet 428. One or more sliders (e.g., ball sliders, friction sliders, sliders, rollers, etc.) may be positioned between the first member 501 and the second member 502. One or more sliders may guide the first member 501 as it translates relative to the second member 502.

[0129] The leg assembly 500 may include a height adjustment mechanism 503 having a drive assembly 504 and a lever 505. The drive assembly 504 may be located at least partially inside the first member 501. The drive assembly 504 may be configured to rotate the synchronizing lever 430, and therefore the drive assembly 504 may be configured to drive the balancing mechanism 450 as discussed in the previous sections.

[0130] In some example configurations, the drive assembly 504 may include a first sprocket 506 and a second sprocket 507. The first sprocket 506 may be rotatably coupled to the first member 501 near a portion 501A, and the second sprocket 507 may be rotatably coupled to the first member 501 near a second portion 501B. A tension member 508 (e.g., a chain, rope, cable, cord, etc.) may be coupled to the first sprocket 506 and the second sprocket 507. Figure 22 As illustrated, the tension member 508 can form a loop around the first sprocket 506 and the second sprocket 507, and the tension member 508 can be at least partially wound around the first sprocket 506 and the second sprocket 507. The tension member 508 can be keyed (e.g., coupled, connected, attached, etc.) to the first sprocket 506 and the second sprocket 507 such that the tension member 508 can synchronize the rotation of the first sprocket 506 and the second sprocket 507.

[0131] Rod 505 may be at least partially located inside the second member 502. Rod 505 may extend between a first end 505A and a second end 505B. The first end 505A of rod 505 may be connected to the second member 502 near the second portion 502B, and the second end 505B of rod 505 may be located inside the first member 501. Tension member 508 may be securely attached to rod 505 near the second end 505B of rod 505 at fastener 509. Fastener 509 may be located inside the first member 501 between the first sprocket 506 and the second sprocket 507. Fastener 509 may be securely attached to rod 505, and may translate relative to the first member 501 when the first member 501 translates relative to the second member 502. Figure 22 As illustrated, since the tension member 508 is keyed to the first sprocket 506 and the second sprocket 507, the first sprocket 506 and the second sprocket 507 can be configured to rotate relative to the first member 501 in a first direction 511 when the first member 501 translates relative to the second member 502 (e.g., when the first member 501 moves toward the second portion 502B of the second member 502), and a portion of the tension member 508 can translate in a second direction 512 when the first member 501 translates relative to the second member 502 (e.g., when the first member 501 moves toward the second portion 502B of the second member 502).

[0132] The first sprocket may have an aperture 515 formed near its center. The aperture 515 may have a shape (e.g., square, rectangular, hexagonal, star-shaped, etc.) that matches a key 435 formed on the synchronizing rod 430 (e.g., a key 435 formed on the first end 430A and the second end 430B of the synchronizing rod 430). The aperture 515 may be adapted to receive the key 435. The synchronizing rod 430 may be configured to rotate together with the first sprocket 506 when the first member 501 translates relative to the second member 502.

[0133] Figure 23 This is a schematic diagram of a leg assembly 520 according to another exemplary configuration of the present disclosure. The leg assembly 520 may include a first member 521, a second member 522, and a third member 523. The first member 521 may be slidably engaged with the second member 522, and the second member 522 may be slidably engaged with the third member 523. The first member 521 may extend between a first portion 521A and a second portion 521B. The second member 522 may extend between a first portion 522A and a second portion 522B. The third member 523 may extend between a first portion 523A and a second portion 523B. In some example configurations, the first member 521 may be at least partially located inside the second member 522 (e.g., a second portion 521B of the first member 521 may be located inside the second member 522 near a first portion 522A), and the second member 522 may be at least partially located inside the third member 523 (e.g., a second portion 522B of the second member 522 may be located inside the third member 523 near a first portion 523A). In other example configurations, the second member 522 may be at least partially located inside the first member 521, and the third member 523 may be at least partially located inside the second member 522.

[0134] The first component 521 may be coupled to the working surface near the first portion 521A (e.g., coupled to...). Figure 20 The working surface 402), and the third member 523 can be coupled to the foot (e.g., coupled to) near the second part 523B. Figure 20One or more feet 428). The first member 521 may be configured to translate relative to the second member 522 and the third member 523 to provide height adjustment for the working surface 402. One or more sliders of a first group (e.g., ball sliders, friction sliders, sliders, rollers, etc.) may be positioned between the first member 521 and the second member 522 to guide the first member 521 when it translates relative to the second member 522. One or more sliders of a second group may be positioned between the second member 522 and the third member 523 to guide the second member 522 when it translates relative to the third member 523.

[0135] In some example configurations, the leg assembly 520 may include a height adjustment mechanism 524 having a drive assembly 525 at least partially located within a first member 521 and a synchronizer assembly 526 at least partially located within a second member 522. The synchronizer assembly 526 synchronizes the displacement of the first member 521 relative to the second member 522 with the displacement of the second member 522 relative to a third member 523. The drive assembly 525 may be operatively coupled to... Figure 21 The balancing mechanism 450 is driven when adjusting the height of the leg assembly 520.

[0136] In some example configurations, the drive assembly 525 may include a first sprocket 531 and a second sprocket 532. The first sprocket 531 may be rotatably coupled to the first member 521 near a first portion 521A, and the second sprocket 532 may be rotatably coupled to the first member 521 near a second portion 521B. A first tension member 533 (e.g., a chain, rope, cable, cord, etc.) may be coupled to the first sprocket 531 and the second sprocket 532. Figure 23 As illustrated, the first tension member 533 can form a loop around the first sprocket 531 and the second sprocket 532, and the first tension member 533 can be at least partially wound around the first sprocket 531 and the second sprocket 532. The first tension member 533 can be keyed (e.g., coupled, connected, attached, etc.) to the first sprocket 531 and the second sprocket 532 such that the first tension member 533 can synchronize the rotation of the first sprocket 531 and the second sprocket 532.

[0137] A first rod 534 may be connected to a second member 522. The first rod 534 may be at least partially located inside the second member 522. The first rod 534 may extend between a first end 534A and a second end 534B. The first end 534A of the first rod 534 may be connected to the second member 522 near the second portion 522B, and the second end 534B of the first rod 534 may be located inside the first member 521. A first tension member 533 may be fixedly attached to the first rod 534 near the second end 534B of the first rod 534 at a first fastener 535. The first fastener 535 may be located inside the first member 521 between a first sprocket 531 and a second sprocket 532. The first fastener 535 may be fixedly attached to the first rod 534, and the first fastener 535 may translate relative to the first member 521 when the first member 521 translates relative to the second member 522. Since the first tension member 533 is keyed to the first sprocket 531 and the second sprocket 532, the first sprocket 531 and the second sprocket 532 can be configured to rotate relative to the first member 521 when the first member 521 translates relative to the second member 522. For example, as Figure 23 As illustrated, the first sprocket 531 can be configured to rotate in a first direction 511 when the first member 521 translates toward the second part 523B of the third member 523, while a portion of the first tension member 533 can be configured to translate in a second direction 512 when the first member 521 translates toward the second part 523B of the third member 523.

[0138] The first sprocket 531 may have an aperture 536 formed near its center. The aperture 536 may have a shape (e.g., square, rectangular, hexagonal, star-shaped, etc.) that matches a key 435 formed on the synchronizing rod 430 (e.g., a key 435 formed on the first end 430A and the second end 430B of the synchronizing rod 430). The aperture 536 may be adapted to receive the key 435. The synchronizing rod 430 may be configured to rotate together with the first sprocket 531 when the first member 521 translates relative to the second member 522.

[0139] Synchronizer assembly 526 may include a third sprocket 541, a fourth sprocket 542, and a second lever 543. The second lever 543 may extend between a first end 543A and a second end 543B. Figure 23 As illustrated, the first end 543A of the second rod 543 can be connected to the second member 522 (e.g., connected to the second portion 522B of the second member 522), and the second end 543B of the second rod 543 can be located inside the first member 521. The third sprocket 541 and the fourth sprocket 542 can be rotatably connected to the second rod 543 near the second end 543B and the first end 543A, respectively. Therefore, as... Figure 23As illustrated, the third sprocket 541 can be rotatably connected to the second member 522 near the first portion 522A of the second member 522, and the fourth sprocket 542 can be connected to the second member 522 near the second portion 522B of the second member 522.

[0140] The second tension member 545 (e.g., chain, rope, cable, cord, etc.) can be connected to the third sprocket 541 and the fourth sprocket 542. Figure 23 As illustrated, the second tension member 545 can form a loop around the third sprocket 541 and the fourth sprocket 542, and the second tension member 545 can be at least partially wound around the third sprocket 541 and the fourth sprocket 542. The second tension member 545 can be keyed (e.g., coupled, connected, attached, etc.) to the third sprocket 541 and the fourth sprocket 542, such that the second tension member 545 can synchronize the rotation of the third sprocket 541 and the fourth sprocket 542.

[0141] The third rod 547 can be connected to the third member 523. The third rod 547 can be located at least partially inside the third member 523. The third rod 547 can extend between the first end 547A and the second end 547B. The first end 547A of the third rod 547 can be connected to the third member 523 near the second part 523B, and the second end 547B of the third rod 547 can be located inside the second member 522.

[0142] The second tension member 545 can be fixedly attached to the first member 521 near the second portion 521B at the second fastener 548, and the second tension member 545 can be fixedly attached to the third rod 547 near the second end 547B at the third fastener 549. The second fastener 548 and the third fastener 549 can be located between the third sprocket 541 and the fourth sprocket 542. When the first member 521 translates relative to the second member 522 and the second member 522 translates relative to the third member 523, the second fastener 548 and the third fastener 549 can translate relative to the second member 522. Since the second tension member 545 is keyed to the third sprocket 541 and the fourth sprocket 542, the third sprocket 541 and the fourth sprocket 542 can be configured to rotate by an equal amount relative to the second member 522, so that the movement of the first member 521 relative to the second member 522 and the movement of the second member 522 relative to the third member 523 are equal.

[0143] In some example configurations, Figure 22 The first sprocket 506 of the leg assembly 500 or Figure 23 The first sprocket 531 of the leg assembly 520 can be equivalent to Figure 17The lifting mechanism 401 has a drive pulley 445. In other configurations, a separate drive pulley may be coupled to a height adjustment mechanism (e.g., coupled to...). Figure 22 The first sprocket 506 or connected to Figure 22 The first sprocket 531). The drive pulley 445 can be driven by the drive pulley assembly 437 (in Figure 17 (As shown in the figure) is operably coupled to the balancing mechanism 410. The drive pulley 445 can drive the balancing mechanism 410 during height adjustment of one or more leg assemblies 420 to generate a lifting force acting on the movable part to counteract the weight of one or more loads coupled to the movable part.

[0144] Figure 24 It is based on the example configuration of this disclosure. Figure 17 A schematic diagram of a drive pulley assembly 437. The drive pulley assembly may include a drive pulley 445 having a first radius 449, a synchronizer 430, and a wheel 431 having a second radius 439. The drive pulley 445, synchronizer 430, and wheel 431 may be concentric about the axis 433 of the synchronizer. The synchronizer 430 may be connected to the drive pulley 445 as discussed in the previous section, and the wheel 431 may be connected as discussed in the previous section. Figure 17 The connection to the synchronizing rod 430 is illustrated in the figure. The drive pulley assembly 437 can rotate about the rod axis 433 so that the lifting mechanism 401 can raise and lower the movable part and one or more loads connected to the movable part (e.g., Figure 17 Working surface 402).

[0145] Tension member 550 (e.g., Figure 22 Tension member 508 or Figure 23 The first tension member 533 can be coupled to the drive pulley 445. The tension member 550 can be adapted to carry a movable part (e.g., Figure 4 The combined weight 552 of the movable part 120 of the stand-alone workstation 180 and one or more loads (e.g., ...) connected to the movable part Figure 4 At least a portion of the weight of one or more loads (e.g., 130, etc.). Figure 24 As illustrated, the tension member 550 can be adapted to rotate the drive pulley assembly 437 in a first direction 511, and the combined weight 552 acting on the drive pulley 445 via the tension member 550 can apply a first torque 554 to the drive pulley assembly 437 in the first direction 511.

[0146] The rope force 467 generated by the balancing mechanism 450 and acting on the wheel 431 via the rope 490 (e.g.) Figures 18 to 19(As shown in the diagram) A second torque 556 can be applied to the drive pulley assembly 437 in the direction opposite to the first direction 511. The first torque 554 can be equal to the second torque 556 to keep the drive pulley assembly 437 in a balanced state. To keep the drive pulley assembly 437 in a balanced state (e.g., the combined weight 552 can be offset by the rope force 467 generated by the balancing mechanism 450), the rope force 467 can be equal to the combined weight 552 multiplied by the ratio of the first radius 449 to the second radius 439.

[0147] The rope force 467 can be defined by one or more parameters of the gas spring 455, one or more parameters of the springs 472, and the geometry of the balancing mechanism 450. By selecting the parameters and geometry, a rope force 467 can be generated to keep the drive pulley assembly in a balanced state. Although Figures 18 to 19 The first force 465 and the second force 466 shown can vary during the translation of the movable part, but the rope force 467 can be substantially constant due to the varying spring angle 484 and arm angle 464.

[0148] If the drive pulley assembly 437 is in a balanced state, the drive pulley assembly 437 can be stationary (e.g., the drive pulley assembly 437 cannot rotate about the rod axis 433), thereby maintaining the position (e.g., height) of the movable part and one or more loads (e.g., working surface 402) coupled to the movable part. In the balanced state of the drive pulley assembly 437, the positioning device 10 (e.g., Figure 20 Users of the standalone workstation 400 can adjust the height of the movable part by applying a small amount of force to it.

[0149] In some example configurations, a locking mechanism may be coupled between the movable portion 120 and the fixed portion 110 to maintain the position of the movable portion 120 relative to the structure 140. In some example configurations, the locking assembly may be coupled between the working surface 402 or the frame 406 and the drive pulley assembly 437.

[0150] Additional notes and other aspects

[0151] Example 1 is a lifting system for raising and lowering a load, the lifting system comprising: a fixed portion coupled to a structure; a movable portion coupled to a load and capable of translation relative to the fixed portion; one or more sliding mechanisms coupled between the fixed portion and the movable portion, the sliding mechanisms at least partially defining the range of travel of the movable portion relative to the fixed portion; and a balancing mechanism coupled to the fixed portion and the movable portion, the balancing mechanism being operable to generate a lifting force to counteract the weight of the load.

[0152] In Example 2, the subject matter of Example 1 may optionally include: the balancing mechanism comprising: an arm rotatably coupled to the fixed portion; an adjustment mechanism coupled to the fixed portion; an energy storage member coupled between the arm and the adjustment mechanism, the energy storage member being configured to bias the arm to rotate in a first direction; and a rope coupled to the arm and the movable portion.

[0153] In Example 3, the subject matter of Example 2 may optionally include: wherein the energy storage component comprises one or more of a gas spring, a compression spring, and a tension spring.

[0154] In Example 4, the subject matter of any or more of Examples 2 to 3 may optionally include: an idler pulley coupled to the arm; and one or more redirecting pulleys coupled to the fixed portion; wherein the rope is coupled to the fixed portion at a first end and to the movable portion at a second end, wherein the rope is arranged around the idler pulley and one or more redirecting pulleys between the first end and the second end, and wherein the rope is configured to cause the arm to rotate in a second direction opposite to the first direction when the movable portion is translated from a high position to a low position.

[0155] In Example 5, the subject matter of any or more of Examples 2 to 4 may optionally include: the adjustment mechanism comprising: a bracket coupled to the fixed portion; a slider movably coupled to the bracket and rotatably coupled to the energy storage member; and a screw rotatably coupled to the bracket and threadedly engaged with the slider, the screw being adapted to cause the slider to translate relative to the bracket when the screw is rotated; wherein the adjustment mechanism is configured to change the angle between the energy storage member and the arm when the slider translates relative to the bracket.

[0156] Example 6 is a lifting system for raising and lowering a work surface, the lifting system comprising: a work surface having a lower side; a balancing mechanism coupled to the lower side; and one or more leg assemblies removably coupled to the lower side and operably coupled to the balancing mechanism; wherein the one or more leg assemblies are configured to translate the work surface between a high position and a low position, wherein the one or more leg assemblies are configured to activate the balancing mechanism during the translation of the work surface, and wherein the balancing mechanism is adapted to provide lifting assistance by counteracting the weight of the work surface during the translation of the work surface between the high position and the low position.

[0157] In Example 7, the subject of Example 6 may optionally include a frame attached to the lower side; wherein the one or more leg components are removably attached to the frame, and wherein the balancing mechanism is attached to the frame.

[0158] In Example 8, the subject matter of any or more of Examples 6 and 7 may optionally include: the one or more leg components comprising: a first member coupled to the lower portion; a second member slidably engaged with the first member at a first end and coupled to a foot at a second end opposite to the first end; wherein the foot is adapted to be mounted on a structure, and wherein the first member is configured to translate relative to the second member to provide height adjustment for the working surface.

[0159] In Example 9, the subject matter of any or more of Examples 6 to 8 may optionally include: the one or more leg components comprising: a first member coupled to the lower portion; a second member slidably engaged with the first member; and a third member slidably engaged with the second member at a first end and coupled to a foot at a second end opposite to the first end; wherein the foot is adapted to be mounted on a structure, and wherein the first member and the second member are configured to translate relative to the third member to provide height adjustment for the working surface.

[0160] In Example 10, the subject matter of any or more of Examples 8 to 9 may optionally include a drive pulley assembly comprising: one or more bushings coupled to the lower portion; a rod extending between a first rod end and a second rod end, the rod being coupled at the first rod end and the second rod end to the one or more leg assemblies and rotatably coupled between the first rod end and the second rod end to the one or more bushings; and a wheel coupled to the rod between the first rod end and the second rod end; wherein the drive pulley assembly is removably coupled to the one or more leg assemblies and operably coupled to the balancing mechanism, wherein translation of the working surface is adapted to rotate the rod relative to the working surface, and wherein rotation of the rod configures the balancing mechanism to be activated.

[0161] In Example 11, the subject matter of Example 10 optionally includes: the rod includes a key formed on the first rod end and the second rod end, wherein the key is formed in a shape selected from the group consisting of: star, ellipse, square, rectangle, hexagon, triangle and polygon.

[0162] In Example 12, the subject matter of any or more of Examples 10 to 11 may optionally include: the balancing mechanism comprising: an arm rotatably coupled to the lower portion; a first adjustment mechanism coupled to the lower portion; and a first energy storage member coupled between the arm and the first adjustment mechanism, the first energy storage member being configured to bias the arm to rotate in a first direction; wherein the first adjustment mechanism is configured to change an aspect of the first energy storage member.

[0163] In Example 13, the subject matter of Example 12 may optionally include: the first adjustment mechanism comprising: a bracket coupled to the lower portion; a slider movably coupled to the bracket; and a screw rotatably coupled to the bracket and threadedly engaged with the slider; wherein the first energy storage member is rotatably coupled to the slider, wherein the screw is adapted to translate the slider relative to the bracket when the screw is rotated, and wherein the first adjustment mechanism is configured to change the angle between the first energy storage member and the arm when the slider is translated relative to the bracket.

[0164] In Example 14, the subject matter of Example 13 may optionally include: an idler pulley coupled to the arm; one or more redirecting pulleys coupled to the lower portion; and a rope having a first end and a second end; wherein the rope is coupled to the lower portion at the first end and to the pulley at the second end, wherein the rope is arranged around the idler pulley and one or more redirecting pulleys between the first end and the second end, and wherein the rope is configured to cause the arm to rotate in a second direction opposite to the first direction as the working surface translates from the high position to the low position.

[0165] In Example 15, the subject matter of any or more of Examples 11 to 14 may optionally include: the one or more leg assemblies comprising a drive assembly; the drive assembly comprising: a first sprocket rotatably coupled to the first member near the lower portion, the first sprocket having an aperture shaped to match the shape of the key formed on the ends of the first and second rods; a second sprocket rotatably coupled to the first member near the second member away from the first sprocket; and a first tension member coupled to the first and second sprockets, the first tension member forming a loop around the first and second sprockets, and the first tension... A component is keyed to the first sprocket and the second sprocket to synchronize the rotation of the first sprocket with the rotation of the second sprocket; and a first rod is connected at one end to the second component and at the other end to the first tension component; wherein the drive assembly is at least partially housed within the first component, and a portion of the drive assembly is configured to translate together with the first component, wherein the first sprocket and the second sprocket are configured to rotate in response to height adjustment of one or more leg components, and wherein the orifice is adapted to receive the key located at the end of the first rod or the end of the second rod, and wherein the first sprocket is adapted to rotate the rod in response to height adjustment of the one or more leg components.

[0166] In Example 16, the subject matter of any or more of Examples 9 to 15 may optionally include: the one or more leg assemblies further comprising a synchronizer assembly; the synchronizer assembly comprising: a second rod extending from a first end to a second end, the first end of the second rod being coupled to a second member, and the second end of the second rod being located inside the first member; a third rod extending from a first end to a second end, the first end of the third rod being coupled to the third member, and the second end of the third rod being located inside the second member; a third sprocket rotatably coupled to the second rod near the second end of the second rod; and a fourth sprocket rotatably coupled to the second rod near the first end of the second rod. The first member is connected to the second rod in a manner that allows for the following: a second tension member is connected to the third sprocket and the fourth sprocket, the second tension member forms a loop around the third sprocket and the fourth sprocket, the second tension member is keyed to the third sprocket and the fourth sprocket to synchronize the rotation of the third sprocket with the rotation of the fourth sprocket, and the second tension member is also connected to the third rod and to the first member near the second end of the third rod; wherein the synchronizer assembly is at least partially housed within the second member, and a portion of the synchronizer assembly is configured to translate together with the second member, and wherein the synchronizer assembly is configured to synchronize the movement between the first member and the second member and the movement between the second member and the third member.

[0167] In Example 17, the subject matter of any or more of Examples 12 to 16 may optionally include: the balancing mechanism further comprising an assist assembly coupled between the lower portion and the arm, wherein the assist assembly is configured to be selectively activated to bias the arm in a first direction.

[0168] In Example 18, the subject matter of Example 17 may optionally include: the booster assembly comprising: a first spring plate rotatably coupled to the arm; a second spring plate having a threaded hole near the center of the second spring plate; a second energy storage member coupled between the first spring plate and the second spring plate; and a screw rotatably coupled to the lower portion and threadedly engaged with the second spring plate at the threaded hole; wherein the screw is adapted to translate the second spring plate along the screw axis to adjust the tension of the second energy storage member.

[0169] In Example 19, the subject matter of any or more of Examples 17 to 18 may optionally include: the booster assembly comprising: a first tube having a first end and a second end coupled to a first ring, the first tube being rotatably coupled to the lower portion at the first ring; a second tube slidably engaged with the first tube, the second tube having a first end and a second end located inside the first tube; a rod slidably engaged with the first tube, the rod having a first end and a second end located inside the second tube; the rod including 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 is rotatably connected to the arm at the second ring; a second energy storage member is coupled between the first support and the second end of the second tube, the second energy storage member being compressed between the first support and the second end of the second tube to bias the second tube toward the second bracket; and a fastener selectively coupled between the first tube and the second tube, the booster assembly being activated when the fastener is engaged with both the first tube and the second tube and deactivated when the fastener is disengaged from one or both of the first tube and the second tube; wherein the booster assembly is configured to bias the arm to rotate in the first direction when the booster assembly is activated.

[0170] In Example 20, the subject of any or more of Examples 6 to 19 may optionally include a main support connected to the lower portion, wherein the balancing mechanism is connected to the main support.

[0171] Each of these non-restrictive examples can exist independently or can be combined with any one or more examples from other examples in any permutation or combination.

[0172] The above detailed description includes reference to the accompanying drawings, which form part of the detailed description. The drawings illustrate, by way of illustration, specific embodiments in which the subject matter can be practiced. These embodiments are also referred to herein as “examples.” Such examples may include elements other than those shown or described. However, the inventors also contemplate examples in which only those elements shown or described are provided. Furthermore, the inventors contemplate examples of any combination or arrangement of those elements (or one or more aspects of those elements) shown or described with respect to a particular example (or one or more aspects of that particular example) or with respect to other examples shown or described herein (or one or more aspects of those other examples).

[0173] In the event of any inconsistency between the usage in this document and any other document incorporated by reference, the usage in this document shall prevail.

[0174] In the appended claims, the terms “comprising” and “including” are open-ended, meaning that a system, apparatus, article, composition, formulation, or process that includes elements other than those listed after such terms in the claims is still considered to fall within the scope of the claims. Furthermore, in the appended claims, the terms “first,” “second,” and “third,” etc., are used merely as labels and are not intended to impose numerical requirements on their subject matter.

[0175] The above description is intended to be illustrative and not restrictive. For example, the examples above (or one or more aspects thereof) may be used in combination with each other. Other embodiments may be used by those skilled in the art after consulting the above description. An abstract is provided to conform to 37C.FR §1.72(b) to allow the reader to quickly determine the nature of the disclosure. The abstract is submitted based on the understanding that it will not be used to interpret or limit the scope or meaning of the claims. Furthermore, in the detailed description above, various features may be combined to simplify the disclosure. This should not be construed as implying that any unclaimed disclosed feature is necessary for any claim. Rather, the subject matter of the invention may lie in fewer than all features of a particular disclosed embodiment. Therefore, the appended claims are incorporated herein by way of example or embodiment, wherein each claim exists independently as a separate embodiment, and it is contemplated that such embodiments may be combined with each other in various combinations or arrangements. The scope of this subject matter should be determined by reference to the appended claims and the full scope of equivalents conferred by such claims.

Claims

1. A lifting system for raising and lowering loads around a structure, the lifting system comprising: A first component, the first component being capable of being connected to a selected one of the structure or the load; A second component, which is translatable relative to the first component, and which is connectable to the other of the structure or the load; A sliding mechanism is connected between the first member and the second member, and the sliding mechanism at least partially defines the range of travel between the first member and the second member; as well as A balancing mechanism, connected to the first component and the second component, operable to generate a lifting force to counteract the weight of the load, the balancing mechanism comprising: An arm, which is rotatably connected to the first component; A first energy storage component, the first energy storage component being coupled to the arm, the first energy storage component being configured to bias the arm to rotate in a first direction; and A rope connected to the arm, the rope including a first end portion connected to the first member and a second end portion connected to the second member, the rope being connected to the arm between the first end portion and the second end portion, the rope being configured to rotate the arm when the second member translates relative to the first member.

2. The lifting system according to claim 1, wherein: The balancing mechanism includes an adjustment mechanism connected to the first component; and The first energy storage component is connected between the arm and the adjustment mechanism.

3. The lifting system according to claim 2, wherein the adjusting mechanism comprises: The bracket is connected to the first component; A slider, which is movably connected to the bracket and rotatably connected to the first energy storage component; as well as A screw rotatably connected to the bracket and threadedly engaged with the slider, the screw being configured to cause the slider to translate relative to the bracket as the screw rotates. The adjustment mechanism is configured to adjust the angle between the first energy storage member and the arm as the slider translates relative to the support.

4. The lifting system according to claim 2, wherein the first energy storage component comprises a gas spring, a compression spring, or a tension spring.

5. The lifting system according to claim 2, comprising: A slack pulley is connected to the arm; as well as A redirecting pulley, the redirecting pulley being connected to the first component; The rope is laid around the idle pulley and the redirecting pulley between the first end portion and the second end portion.

6. The lifting system according to any one of claims 1 to 5, wherein, The rope is configured to cause the arm to rotate in a second direction opposite to the first direction when the second member is translated from a first position to a second position relative to the first member.

7. The lifting system according to any one of claims 1 to 5, comprising a tensioning mechanism coupled to one of the first member or the second member and to one of the first end portion or the second end portion of the rope, the tensioning mechanism being configured to adjust the tension in the rope.

8. The lifting system according to any one of claims 1 to 5, wherein the balancing mechanism includes an assist assembly coupled between the first member and the arm, the assist assembly being operable to bias the arm in the first direction.

9. The lifting system according to claim 8, wherein the booster assembly comprises: A first spring plate, the first spring plate being rotatably connected to the arm; A second spring plate, the second spring plate including a threaded hole; A second energy storage component is connected between the first spring plate and the second spring plate; as well as A screw, which is rotatably connected to the first component and threadedly connected to the threaded orifice; The screw is adapted to cause the second spring plate to translate along the screw axis to adjust the tension of the second energy storage member.

10. The lifting system of claim 8, wherein the booster assembly comprises: A first tube, the first tube being rotatably connected to the first component; A second tube, which is slidably engaged with the first tube, the second tube comprising: The first tube end portion, the first tube end portion being configured to be at least partially disposed inside the first tube; and The end portion of the second tube; A rod, which is slidably engaged with the second tube and rotatably connected to the arm, the rod comprising: The first rod end portion is configured to be at least partially disposed inside the second tube; A first support member is connected to the end portion of the first rod; The end portion of the second rod; A second support member, the second support member being connected near the end portion of the second rod; and A ring, the ring being connected to the end portion of the second rod, the rod being rotatably connected to the arm at the ring; A second energy storage member is connected between the first support and the end portion of the second tube, and the second energy storage member is compressible between the first support and the end portion of the second tube to bias the second tube toward the second support; and Fasteners that can selectively engage with the first tube and the second tube; in: Engaging the fastener with the first and second tubes activates the booster assembly to increase the lifting force; and Disconnect the fastener from the first or second tube to deactivate the booster assembly.

11. A lifting system for raising and lowering loads around a structure, the lifting system comprising: A first component, which can be connected to the structure; A second component, which is capable of translation relative to the first component, is configured to receive a load that exerts gravity on the second component; as well as A balancing mechanism, coupled between the first member and the second member, is configured to provide a lifting force to at least partially counteract the gravity to limit or inhibit translation of the second member from a selected position, the balancing mechanism comprising: An arm, which is rotatably connected to the first component; A first energy storage component, the first energy storage component being coupled to the arm, the first energy storage component being configured to apply a first rotational force to the arm in a first direction; and A rope connected to the arm, the rope including a first end portion and a second end portion, the first end portion being connected to a first member and the second end portion being connected to a second member, the rope being configured to apply a second rotational force to the arm in a second direction, the second direction being different from the first direction.

12. The lifting system of claim 11, wherein the balancing mechanism includes an adjustment mechanism connected to the first member and the first energy storage member, the adjustment mechanism being configured to adjust the angle of the first energy storage member relative to the arm.

13. The lifting system according to claim 12, wherein the adjusting mechanism comprises: The bracket is connected to the first component; A slider, which is movably connected to the bracket and to the first energy storage component; as well as A screw is rotatably connected to the bracket and threadedly engaged with the slider, the screw being configured to cause the slider to translate relative to the bracket when the screw is rotated.

14. The lifting system according to claim 12, wherein the first energy storage component comprises a gas spring, a compression spring, or a tension spring.

15. The lifting system according to claim 12, comprising: A slack pulley is connected to the arm; as well as A redirecting pulley, the redirecting pulley being connected to the first component; The rope is laid around the idle pulley and the redirecting pulley between the first end portion and the second end portion.

16. The lifting system according to any one of claims 11 to 15, comprising a main support connected to the first member, the main support being configured to connect the balancing mechanism to the first member.

17. The lifting system according to any one of claims 11 to 15, comprising a tensioning mechanism coupled to one of the first member or the second member and to one of the first end portion or the second end portion of the rope, the tensioning mechanism being configured to adjust the tension in the rope.

18. The lifting system according to any one of claims 11 to 15, wherein the balancing mechanism includes an assist assembly coupled between the first member and the arm, the assist assembly being operable to increase the lifting force.

19. The lifting system of claim 18, wherein the booster assembly comprises: A first spring plate, the first spring plate being rotatably connected to the arm; A second spring plate, the second spring plate including a threaded hole; A second energy storage component is connected between the first spring plate and the second spring plate; as well as A screw, rotatably connected to the first member and threadedly engaged with the threaded orifice, the screw being operable to cause the second spring plate to translate along the screw axis to adjust the tension of the second energy storage member; Increasing the tension of the second energy storage component increases the lifting force.

20. The lifting system of claim 18, wherein the booster assembly comprises: A first tube, the first tube being rotatably connected to the first component; A second tube is slidably engaged with the first tube, and the second tube is configured to be at least partially disposed inside the first tube; A support member, the support member being configured to be disposed inside the second tube; A second energy storage component is configured to be disposed at least partially inside the second tube between the support and the end portion of the second tube; A rod, which is connected between the support and the arm, is slidably engaged with the second tube, and is configured to be at least partially disposed inside the second energy storage member; as well as Fasteners that can selectively engage with the first tube or the second tube; in: Engaging the fastener with the first tube and the second tube activates the booster assembly to increase the lifting force. and Disconnect the fastener from the first or second tube to deactivate the booster assembly.

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