Patent Application
20210219446
The present disclosure relates in general to information handling systems, and more particularly to management of vibrations and shocks in the transportation of information handling systems.
As the value and use of information continues to increase, individuals and businesses seek additional ways to process and store information. One option available to users is information handling systems. An information handling system generally processes, compiles, stores, and/or communicates information or data for business, personal, or other purposes thereby allowing users to take advantage of the value of the information. Because technology and information handling needs and requirements vary between different users or applications, information handling systems may also vary regarding what information is handled, how the information is handled, how much information is processed, stored, or communicated, and how quickly and efficiently the information may be processed, stored, or communicated. The variations in information handling systems allow for information handling systems to be general or configured for a specific user or specific use such as financial transaction processing, airline reservations, enterprise data storage, or global communications. In addition, information handling systems may include a variety of hardware and software components that may be configured to process, store, and communicate information and may include one or more computer systems, data storage systems, and networking systems.
Various problems are known in the field of transportation and delivery of information handling systems, particularly in the enterprise context of rack-mounted systems including a plurality of standard-sized server information handling systems. Currently, integrated rack solutions are typically delivered to customers on a wooden pallet with foam (e.g., extruded polystyrene foam) to mitigate shock events. The shipping environment is extremely harsh, and integrated rack solutions can see significant forces, causing damage to the rack or the internal equipment. Further, existing solutions tend to involve large quantities of single-use packing and shipping materials that must be discarded after delivery.
This application is related to U.S. application Ser. No. 16/681,336 (Attorney Docket No. 102450.00614), filed Nov. 12, 2019, which is incorporated by reference herein in its entirety. That application discusses in detail various embodiments of shippable “totes” that may be used as an all-in-one solution to dampen shock events via shock absorbers and/or isolators fully integrated into a server rack.
The present application addresses more specifically the vibrations and/or shocks that may arise during movement of information handling systems in totes or other transportation apparatuses.
Existing solutions typically involve vibration damping with a single degree-of-freedom (DOF) system. Such single DOF systems are able to dampen vibrations only at a single frequency, however. The frequency response of such systems may be spread out somewhat, but it will nevertheless be centered at that single frequency. During a large impact, even a spread-out frequency response may not be sufficient when there are multiple resonances at or near the resonant frequency of an information handling system.
Accordingly, some embodiments of this disclosure may include multiple-DOF damping systems. The use of such disparate types of dampers may allow a single large system resonance to be “split” into two or more smaller resonances.
In these and other embodiments, multiple dampers may be used having different resonance frequencies associated therewith. Such dampers may be arranged in parallel or in series, and they may engage at different loads. For example, dampers having different stiffnesses may be used. In these and other embodiments, dampers may be preloaded such that they do not begin to engage until some threshold load level has been surpassed.
Embodiments of this disclosure may allow the selection of multiple frequencies (e.g., for different loads of information handling systems, different environmental conditions, etc.). For example, a spacing may be selected for the dampers such that dampers may engage at selected weights, or such that a damper engages during impacts, but not during vibrations. In these and other embodiments, a transportation system may be tuned so that vibration frequency peaks typically associated with transit may be efficiently damped out without causing undesirable system resonances.
For purposes of this disclosure, a “damper” may include any of various types of vibration and/or shock attenuation components. For example, shock absorbers, linear dampers, spring isolators, wire rope isolators, elastomeric isolators, air springs, structural damping components, shock casters, etc., may all be considered “dampers.”
The use of techniques according to this disclosure may provide many benefits. It should be noted that for the sake of concreteness, this application describes the use of totes. However, one of ordinary skill in the art will appreciate its applicability to other designs as well, such as standard equipment racks, etc.
It should also be noted that the discussion of a technique in the Background section of this disclosure does not constitute an admission of prior-art status. No such admissions are made herein, unless clearly and unambiguously identified as such.
In accordance with the teachings of the present disclosure, the disadvantages and problems associated with vibrations and/or shocks that may arise during movement of information handling systems in totes or other transportation apparatuses may be reduced or eliminated.
In accordance with embodiments of the present disclosure, an apparatus may include an enclosure that includes a plurality of mounting features that are configured to receive information handling systems, a plurality of casters coupled to the enclosure, and first and second dampers. The first damper may have a first resonance frequency and be disposed such that, when the information handling systems are received in the enclosure, the first damper is coupled between the information handling systems and the plurality of casters. The second damper may have a second, different resonance frequency and be disposed such that, when the information handling systems are received in the enclosure, the second damper is coupled between the information handling systems and the plurality of casters.
In accordance with these and other embodiments of the present disclosure, a method may include forming an enclosure that includes a plurality of mounting features that are configured to receive information handling systems; coupling a plurality of casters to the enclosure; coupling a first damper having a first resonance frequency to the enclosure such that, when the information handling systems are received in the enclosure, the first damper is coupled between the information handling systems and the plurality of casters; and coupling a second damper having a second, different resonance frequency to the enclosure such that, when the information handling systems are received in the enclosure, the second damper is coupled between the information handling systems and the plurality of casters.
Technical advantages of the present disclosure may be readily apparent to one skilled in the art from the figures, description and claims included herein. The objects and advantages of the embodiments will be realized and achieved at least by the elements, features, and combinations particularly pointed out in the claims.
It is to be understood that both the foregoing general description and the following detailed description are examples and explanatory and are not restrictive of the claims set forth in this disclosure.
A more complete understanding of the present embodiments and advantages thereof may be acquired by referring to the following description taken in conjunction with the accompanying drawings, in which like reference numbers indicate like features, and wherein:
Preferred embodiments and their advantages are best understood by reference to
For the purposes of this disclosure, the term “information handling system” may include any instrumentality or aggregate of instrumentalities operable to compute, classify, process, transmit, receive, retrieve, originate, switch, store, display, manifest, detect, record, reproduce, handle, or utilize any form of information, intelligence, or data for business, scientific, control, entertainment, or other purposes. For example, an information handling system may be a personal computer, a personal digital assistant (PDA), a consumer electronic device, a network storage device, or any other suitable device and may vary in size, shape, performance, functionality, and price. The information handling system may include memory, one or more processing resources such as a central processing unit (“CPU”) or hardware or software control logic. Additional components of the information handling system may include one or more storage devices, one or more communications ports for communicating with external devices as well as various input/output (“I/O”) devices, such as a keyboard, a mouse, and a video display. The information handling system may also include one or more buses operable to transmit communication between the various hardware components.
For purposes of this disclosure, when two or more elements are referred to as “coupled” to one another, such term indicates that such two or more elements are in electronic communication or mechanical communication, as applicable, whether connected directly or indirectly, with or without intervening elements.
When two or more elements are referred to as “coupleable” to one another, such term indicates that they are capable of being coupled together.
For the purposes of this disclosure, the term “computer-readable medium” (e.g., transitory or non-transitory computer-readable medium) may include any instrumentality or aggregation of instrumentalities that may retain data and/or instructions for a period of time. Computer-readable media may include, without limitation, storage media such as a direct access storage device (e.g., a hard disk drive or floppy disk), a sequential access storage device (e.g., a tape disk drive), compact disk, CD-ROM, DVD, random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and/or flash memory; communications media such as wires, optical fibers, microwaves, radio waves, and other electromagnetic and/or optical carriers; and/or any combination of the foregoing.
For the purposes of this disclosure, the term “information handling resource” may broadly refer to any component system, device, or apparatus of an information handling system, including without limitation processors, service processors, basic input/output systems, buses, memories, I/O devices and/or interfaces, storage resources, network interfaces, motherboards, and/or any other components and/or elements of an information handling system.
Processor 103 may include any system, device, or apparatus configured to interpret and/or execute program instructions and/or process data, and may include, without limitation, a microprocessor, microcontroller, digital signal processor (DSP), application specific integrated circuit (ASIC), or any other digital or analog circuitry configured to interpret and/or execute program instructions and/or process data. In some embodiments, processor 103 may interpret and/or execute program instructions and/or process data stored in memory 104 and/or another component of information handling system 102.
Memory 104 may be communicatively coupled to processor 103 and may include any system, device, or apparatus configured to retain program instructions and/or data for a period of time (e.g., computer-readable media). Memory 104 may include RAM, EEPROM, a PCMCIA card, flash memory, magnetic storage, opto-magnetic storage, or any suitable selection and/or array of volatile or non-volatile memory that retains data after power to information handling system 102 is turned off.
As shown in
Network interface 108 may comprise one or more suitable systems, apparatuses, or devices operable to serve as an interface between information handling system 102 and one or more other information handling systems via an in-band network. Network interface 108 may enable information handling system 102 to communicate using any suitable transmission protocol and/or standard. In these and other embodiments, network interface 108 may comprise a network interface card, or “NIC.” In these and other embodiments, network interface 108 may be enabled as a local area network (LAN)-on-motherboard (LOM) card.
As discussed above, various problems are known in the art of transportation and delivery of information handling systems (e.g., information handling system 102). Accordingly, a transportation apparatus referred to herein as a tote may be used as an all-in-one solution that dampens shock events via shock absorbers and/or isolators fully integrated into a server rack, having a ship loadable design. Such a tote may be made of any suitable material (e.g., steel).
Turning now to
In some embodiments, tote 200 may be usable only for transport of information handling systems (e.g., it may not be configured for powering and operating such systems while they are received in the rack).
The rack may be isolated from vibrations during transit via the use of isolators 206. In various embodiments, isolators 206 may be wire rope, elastomeric, or any other suitable type of isolator. In the embodiment shown, isolators 206 are of the wire rope type. In some embodiments, tote 200 may also include lateral shock absorbers for protection from bumps that it may experience during integration and transportation (e.g., running into other racks, walls, truck walls, etc.).
Base portion 208 may also include casters 210 (e.g., four casters 210), which may be installed in an “outrigger” configuration. For example, enclosure portion 202 has a height H, a width W, and a depth D as shown. The width and the depth may define a footprint for enclosure portion 202, and casters 210 may be disposed in positions that are laterally displaced such that they reside outside of the footprint of enclosure portion 202. In the embodiment shown, casters 210 may be shock-absorbing casters. For example, they may have integral shock dampers and/or may be mounted on shock-damping mounts. More details are described below with reference to the embodiment of
The outrigger configuration for casters 210 may provide additional stability, when compared to a configuration in which casters 210 are within the footprint of enclosure portion 202 (e.g., below enclosure portion 202). Further, the displacement of casters 210 along the width direction but not along the depth direction may allow for the total depth of tote 200 may be minimized, allowing for movement through narrow doors, elevators, etc. Further, the need for pallet jacks may be eliminated.
The configuration of casters 210 and isolators 206 shown may further allow tote 200 to have a reduced total height, easing travel in constrained spaces.
In some embodiments, mounting features 306 may include dampers. For example, mounting features 306 may be coupled to the body of tote 300 via one or more dampers. In these and other embodiments, information handling systems may be coupled to mounting features 306 via one or more dampers interposed between the body of tote 300 and the mounting features 306.
Base 500 also includes a plurality of dampers 502 disposed on a top surface thereof. Dampers 502 may thus be disposed between base 500 and the enclosure portion of the tote, which may be installed on top of base 500 when the tote is fully assembled. In some embodiments, dampers 502 may comprise elastomeric isolators. In some embodiments, some of dampers 502 may be of different types, may have different resonant frequencies, may engage at different loadings, etc.
Accordingly,
As discussed herein, even in single-DOF systems, various dampers may advantageously be used having different resonance frequencies. In various embodiments, such dampers may be arranged in parallel, in series, or in a combination thereof.
In the embodiment shown in
In various embodiments, dampers 606 and 608 may be constructed to have similar or differing stiffnesses. For example, damper 606 may have a relatively lower stiffness (corresponding to a low resonance frequency). Damper 608 may have a relatively higher stiffness (corresponding to a higher resonance frequency).
In these and other embodiments, the arrangement of
For example, it may be advantageous to increase the damping after a small deflection to change the system dynamics during an impact or vibration. Many existing systems may protect against either impacts or vibrations, but not both; the arrangement of
Turning now to
Although various possible advantages with respect to embodiments of this disclosure have been described, one of ordinary skill in the art with the benefit of this disclosure will understand that in any particular embodiment, not all of such advantages may be applicable. In any particular embodiment, some, all, or even none of the listed advantages may apply.
This disclosure encompasses all changes, substitutions, variations, alterations, and modifications to the exemplary embodiments herein that a person having ordinary skill in the art would comprehend. Similarly, where appropriate, the appended claims encompass all changes, substitutions, variations, alterations, and modifications to the exemplary embodiments herein that a person having ordinary skill in the art would comprehend. Moreover, reference in the appended claims to an apparatus or system or a component of an apparatus or system being adapted to, arranged to, capable of, configured to, enabled to, operable to, or operative to perform a particular function encompasses that apparatus, system, or component, whether or not it or that particular function is activated, turned on, or unlocked, as long as that apparatus, system, or component is so adapted, arranged, capable, configured, enabled, operable, or operative.
Further, reciting in the appended claims that a structure is “configured to” or “operable to” perform one or more tasks is expressly intended not to invoke 35 U.S.C. § 112(f) for that claim element. Accordingly, none of the claims in this application as filed are intended to be interpreted as having means-plus-function elements. Should Applicant wish to invoke § 112(f) during prosecution, Applicant will recite claim elements using the “means for [performing a function]” construct.
All examples and conditional language recited herein are intended for pedagogical objects to aid the reader in understanding the invention and the concepts contributed by the inventor to furthering the art, and are construed as being without limitation to such specifically recited examples and conditions. Although embodiments of the present inventions have been described in detail, it should be understood that various changes, substitutions, and alterations could be made hereto without departing from the spirit and scope of the disclosure.
