Patent Application
20140245932
Desks and workstations in use today are predominantly conventionally designed furniture having a relatively large, flat, and fixed horizontal working surface. Research into the health implications of a one-size-fits-all approach to such furniture suggests that workers may be more alert and more productive in a working environment that can be adjusted to the user's particular needs and preferences. Much of the progress in this area has been directed to the user's chair, for example providing adjustment functions that enable a custom comfortable fit and desired support. More recently, ergonomically designed workstations have become available wherein the workstation is designed to provide a better fit to the user rather than requiring the user to accommodate to the workstation. Ergonomic improvements include, for example, angled work surfaces that are designed to comfortably support the user's arms, height-adjustable work surfaces, foot supports, and the like. Such ergonomic improvements are all generally directed to increasing the user's comfort, particularly over longer periods of time, and to preventing injuries such as repetitive motion injuries.
Moreover, in some application, for example in emergency dispatch rooms, a particular workstation may be used by different dispatchers at different times, and therefore is preferably adjustable in relevant ways to accommodate the needs and preferences of different users. Of course, the emergency nature of the calls and the inherent stress in an emergency dispatch environment, and the importance of avoiding any errors, further mandates that such workstations provide adequate ergonomic assistance to the users.
Prior art desks and workstations have been proposed that provide certain ergonomic features. For example, desks are available that have an adjustable-height work surface, which may also be angle-adjustable.
In U.S. Pat. No. 8,051,782, to Nethken et al., which is hereby incorporated by reference, an ergonomic desk is disclosed having a work surface or table section and monitor display stand that are both mounted on a movable sled assembly, such that the work surface and monitors can be moved together as a unit by the user forward and rearward using an electronically controllable sled drive. The monitor display stand can also be moved vertically to adjust the height of the monitor relative to the work surface.
It is ergonomically beneficial to provide users with a height-adjustable work surface. However, Nethken et al. discloses an apparatus wherein the forward/rearward position of the monitor display stand is fixed with respect to the forward/rearward position of the work surface, which are both supported by the sled assembly.
It is known that users generally have a preferred or optimal viewing distance or “focal distance” from a monitor that varies from user to user. The “focal distance,” as used herein refers to the distance between a user's eyes and the front face of the monitor. As noted in U.S. Pat. No. 7,878,476, to Carson et al., which is hereby incorporated by reference, “Inappropriate focal lengths or distance from the eye to the computer screen can cause visual fatigue, headaches or other symptoms of eye strain.” It is also believed that the optimal focal distance for a particular user may vary, depending on a variety of factors, including the nature of the items being viewed on the monitor, the time of day and the user's level of fatigue, ambient lighting conditions, and the like. Therefore, it is ergonomically desirable to provide users with the ability to adjust the focal length.
As best understood, Carson et al. discloses a computer monitor mounting apparatus for mounting a plurality of monitors that includes a frame for supporting the monitors that is attached to a platform with at least one guide having one or more wheels or rollers for rolling the platform on the work surface. The user can therefore adjust the focal length by moving the guide-mounted platform forward or rearward across the work surface. It may be difficult or undesirable, however, to move a large monitor or array of monitors horizontally. The difficulty may be particularly evident when the monitor or array of monitors are mounted on an upright support structure that is attached to the workstation at its base, because of the dynamic bending moments that can be generated in the support structure when moving the monitors.
Additionally, for ergonomic optimization it would be advantageous for a particular user of a workstation to be able to adjust the height of the work surface, and independently adjust the height of the monitor(s) supported on the workstation.
There remains a need for a desk, workstation, or the like that supports one or a plurality of monitors wherein the user can adjust the vertical position of the monitors, and the focal length between the user and the monitor, without requiring moving the monitors horizontally.
This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This summary is not intended to identify key features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
A workstation for use with a plurality of monitors includes height and focal distance adjustability for the monitors that is achieved without requiring moving the monitors horizontally. The workstation includes a plurality of lower lifting columns that are attached to a lower support structure. A work surface is suspended over the lower support structure, and can be moved horizontally between a retracted position and an extended potion. A monitor support assembly is attached to the lower support structure, and includes upper lifting columns and a curved transverse support configured for mounting the monitors. A utility enclosure assembly includes a first portion attached to the back of the work surface. The elevation of the work surface is adjustable by the lower lifting columns, and the height of the monitors is independently adjustable by the upper lifting columns. The focal length for the user is independently adjustable by sliding the work surface between the retracted and extended positions. The horizontal position of the monitors is fixed with respect to the lower support structure. In an embodiment the work surface is attached to the lower support structure with left and right slides having first portions that extend from the work surface, and second portions that extend from the lower support structure. In an embodiment, the upper work surface includes separate control panels for controlling the upper and lower lifting columns.
In an embodiment the utility enclosure defines a user-accessible enclosure that moves with the upper work surface when the upper work surface is moved between the retracted position and the extended position, and the utility enclosure encloses one or more power strips, wherein one or more power strips may be fixed with respect to the support structure, and one or more power strips may be fixed with respect to the movable work surface.
In an embodiment, the monitor support assembly mounts the plurality of monitors horizontally, along a substantially circular arc.
An ergonomic workstation includes a plurality of first lifting column linear actuators adjustably supporting a lower support structure; a work surface attached to the lower support structure with a plurality of slides such that the work surface is movable between a retracted position and an extended position; a second lifting column linear actuator attached to the lower support structure, and a curved monitor support fixed to the second lifting column; and a dashboard assembly comprising a front portion attached to a back end of the work surface and a separable back portion attached to a back end of the lower support structure; wherein the plurality of first lifting column linear actuators are configured to selectively adjust the elevation of the work surface, and the second lifting column linear actuator is configured to selectively adjust the height of the curved monitor support.
The foregoing aspects and many of the attendant advantages of this invention will become more readily appreciated as the same become better understood by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:
A current embodiment of a workstation 100 in accordance with the present invention will now be described, with reference to the FIGURES, wherein like numbers indicate like parts.
The workstation 100 includes a height-adjustable and horizontally adjustable work surface assembly 120. The work surface assembly 120 is adjustably attached to a left base assembly 102 and a right base assembly 104 through four telescoping lifting columns 106 (one visible in
A monitor support structure 140 is attached to the work surface assembly 120, and is configured to support a plurality of conventional monitors 90 (five shown). In this embodiment, the monitor support structure 140 includes a pair of spaced-apart lifting columns 146, for example, Linak A/S DL5 DESKLIFT™ two-part lifting column linear actuators. The monitor support structure 140 is only height adjustable and is not adjustable in a horizontal plane. It should be appreciated that the design of the monitor support structure 140 is significantly simplified by providing only vertical adjustability because the support structure 140 is not required to accommodate the dynamic loads associated with lateral movement of the monitors 90. In addition, the risk of monitors 90 becoming inadvertently detached from the monitor support structure 140 is significantly reduced, improving the workstation 100 reliability.
The lifting columns 146 cooperatively support a curved horizontal bar 144 (
A perspective view of the work surface assembly 120 supported on the lifting columns 106 is shown in
The workstation 100 also includes a bifurcated utility bar, referred to herein as a dashboard assembly 123. The dashboard assembly 123 is defined cooperatively by a back dashboard assembly 124 that extends upwardly from a back portion of the lower support structure 121, and a front dashboard assembly 134 that is fixed to a back portion of the movable upper work surface 131. The back dashboard assembly 124 is therefore fixed, and the front dashboard assembly moves forward and rearward with the upper work surface 131. When the upper work surface 131 is in the fully retracted position shown in
The back dashboard assembly 124 provides an enclosure defining an interior volume that is preferably at least partially accessible to the user. In a current embodiment, the back dashboard assembly 124 includes a left enclosure 124L, a right enclosure 124R, and a center enclosure 124C. The left and right enclosures 124L, 124R have an upper panel that is hingedly attached to the enclosure to provide access to the enclosed volume. The back dashboard assembly 124 encloses components for the workstation 100, including, for example, power strips (not shown) for the monitors 90, lifting columns 106, 146, computers, and other equipment. The back dashboard assembly 124 may also enclose control hardware for the workstation 100, for example, control systems to allow the user to adjust the height and/or horizontal position of the upper work surface 131.
The front dashboard assembly 134 moves with the upper work surface 131 and provides enclosures and front panels for various workstation 100 components.
Preferably, at least some of the volume enclosed by the front dashboard assembly 134 is accessible to the user. In the current embodiment, the front dashboard assembly 134 includes a left enclosure 134L, a right enclosure 134R, and a center enclosure 134C. The front dashboard assembly 134 encloses equipment and outlets that are beneficially fixed with respect to the upper work surface 131. For example, the front dashboard assembly 134 provides externally accessible connectors 132, for example, power outlets, speaker jacks, headphone jacks, and/or microphone jacks. Other peripheral equipment that may be incorporated into the front dashboard assembly 134 include user lighting, memory ports such as universal serial bus ports, CD and/or DVD players and the like, biometric or other user-verification equipment, teleconferencing video cameras, proximity sensors, and the like. The front dashboard assembly 134 in this embodiment also includes a status display 136 that displays information regarding the current adjustment of the workstation 100, such as the work surface 131 height or the like.
In a current embodiment, the left and right enclosures 134L, 134R house power strips (not shown), and the upper panel 137 on the left and right enclosures 134L, 134R are hingedly attached, providing the user with easy access to the power outlets. The center enclosure 134C houses one or more controllable user fans 133. As seen most clearly in
A perspective side view of the work surface assembly 120 supported on the lifting columns 106 is shown in
The front dashboard assembly 134 provides a raised stop or barrier on the upper work surface 131, which guards against objects on the upper work surface 131 being pushed off the back of the surface, and also providing a visual environment that is relatively consistent, even when the upper work surface is moved between the fully retracted and fully extended positions. Moreover, devices on the upper work surface that plug into, or otherwise interface with components on or in the front dashboard assembly 134 are not disturbed and do not need to be adjusted or unplugged when moving the upper work surface 131. In a current embodiment, a locking mechanism (not shown) is provided for releasably locking the upper work surface 131 in a desired extension position.
It will now be appreciated that a user may obtain optimal ergonomic adjustment of the workstation, including monitor height and focal distance, by using one of the control panels 135 to adjust the work surface assembly 120 to a desired height, using the other of the control panels 135 to adjust the monitor 90 height to a desired level, and then slidably adjusting the horizontal position of the upper work surface 131 to obtain a desired focal distance to the monitors 90, and locking the upper work surface 131 in place.
Although a currently preferred embodiment of a workstation in accordance with the present invention has been described in detail, to better understand the present invention, it will be appreciated that the invention is not restricted to the particular details of the present embodiment. For example, it is contemplated that the dashboard assembly 123 may comprise only a forward dashboard assembly, and/or the dashboard assembly may not allow user access to the enclosed volume. It is also contemplated that the horizontal position of the upper work surface 131 may be provided with a motorized or power-assisted means for moving the upper work surface 131 between the retracted and extended positions. It is contemplated that the upper work surface may be slidably connected to the lower support structure 121 by alternative means, including, for example, with wheels disposed on the bottom of the work surface, a track, or other low friction supports disposed between the upper work surface and the lower support structure, or the like. Although the upper work surface 131 is described as moving horizontally, it is contemplated that the upper work surface may be disposed at an angle, which may be adjustable. It is contemplated that more or fewer monitors may be mounted to the monitor support structure 140, and may be spaced apart and/or disposed at different elevations.
While illustrative embodiments have been illustrated and described, it will be appreciated that various changes can be made therein without departing from the spirit and scope of the invention.
