US20160291636A1 - Electronic device and hinge assembly - Google Patents
Electronic device and hinge assembly Download PDFInfo
- Publication number
- US20160291636A1 US20160291636A1 US14/676,420 US201514676420A US2016291636A1 US 20160291636 A1 US20160291636 A1 US 20160291636A1 US 201514676420 A US201514676420 A US 201514676420A US 2016291636 A1 US2016291636 A1 US 2016291636A1
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- United States
- Prior art keywords
- friction wheel
- hinge
- electronic device
- shaft
- pivot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000004308 accommodation Effects 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 11
- 230000013011 mating Effects 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005381 potential energy Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D11/00—Additional features or accessories of hinges
- E05D11/0054—Covers, e.g. for protection
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D11/00—Additional features or accessories of hinges
- E05D11/08—Friction devices between relatively-movable hinge parts
- E05D11/082—Friction devices between relatively-movable hinge parts with substantially radial friction, e.g. cylindrical friction surfaces
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D3/00—Hinges with pins
- E05D3/06—Hinges with pins with two or more pins
- E05D3/12—Hinges with pins with two or more pins with two parallel pins and one arm
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F5/00—Braking devices, e.g. checks; Stops; Buffers
- E05F5/02—Braking devices, e.g. checks; Stops; Buffers specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/181—Enclosures
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
- G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
- G06F2200/161—Indexing scheme relating to constructional details of the monitor
- G06F2200/1612—Flat panel monitor
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
- G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
- G06F2200/163—Indexing scheme relating to constructional details of the computer
- G06F2200/1631—Panel PC, e.g. single housing hosting PC and display panel
Definitions
- the present invention relates to hinge technology, and more particularly to an electronic device and hinge assembly, which includes an electronic device body including a base and a main unit, and hinge devices to pivotally connect the base and main unit of the electronic device body, wherein each hinge device consists of a pivot shaft, a friction wheel set and a damper for allowing adjustment of the angular position of the main unit relative to the base smoothly and stably through a series of angles.
- hinge devices are known and widely used in electronic devices to pivotally connect a display device, face panel or outer cover to a mainframe or base, allowing adjustment of the angular position of the display device, face panel or outer cover relative to the mainframe or base.
- a user may apply excessive force to turn the display device, face panel or outer cover relative to the mainframe or base over the limited range of angles, leading to internal flexible circuit board or bus line damage.
- the display device face panel or outer cover can be crushed.
- There are improved designs of hinge devices capable of providing high torque however, these improved designs of hinge devices commonly have a complicated structure, and their fabrication requires high precision. Thus, these improved designs of hinge devices are not suitable for mass fabrication, and their manufacturing cost is inevitably high.
- the present invention has been accomplished under the circumstances in view. It is therefore the main object of the present invention to provide an electronic device and hinge assembly, which comprises an electronic device body comprising a base and a main unit, and hinge devices pivotally connecting the base and the main unit for allowing adjustment of the angular position of the main unit relative to the base step by step through a series of angles.
- Each hinge device comprises a casing affixed to one of the base and main unit of the electronic device body, a pivot shaft connected to the other of the base and main unit of the electronic device body and rotatably inserted through the casing and secured thereto by a retaining ring, and a friction wheel set and a damper mounted on the pivot shaft in the casing and abutted against each other.
- the friction wheel set comprises a first friction wheel affixed to the casing and having recessed portions equiangularly spaced at one side thereof, and a second friction wheel rotatable with the pivot shaft relative to the first friction wheel and having raised portions respectively engageable into the recessed portions of the first friction wheel.
- the main unit can be biased relative to the base smoothly and stably and positively positioned in the desired angular position.
- the second friction wheel when biasing the main unit relative to the base, the second friction wheel is rotated relative to the first friction wheel, and each raised portion of the second friction wheel is shifted from one recessed portion of the associating first friction wheel to another. After each raised portion moved away from one recessed portion and reached to a respective next recessed portion, elastic members of the damper release an elastic potential energy to hold down the raised portions of the second friction wheel in the respective recessed portions of the first friction wheel.
- the hinge devices allow adjustment of the angular position of the main unit relative to the base step by step through a series of angles. Further, the first and second friction wheels and the elastic members of the damper are easy and inexpensive to manufacture.
- each hinge device further comprises an outer thread extending around the periphery of the shaft body thereof; each hinge device further comprises a locking member threaded onto the outer thread of the shaft body and stopped at the damper against the friction wheel set.
- the elastic potential energy of the elastic members of the damper is relatively adjusted, and thus, the torque produced by the damper during rotation of the pivot shaft is relatively adjusted to buffer the biasing speed of main unit during its angular adjustment by the user.
- the invention enhances angular adjustment smoothness and stability.
- the casing of each hinge further comprises an insertion slot radially cut through the periphery thereof in communication with the accommodation chamber and disposed adjacent to the opening, a position-limit groove located in one end thereof in communication with the opening, and two stop edges located at two opposite sides of the position-limit groove.
- the pivot shaft of each hinge device further comprises a stop block connected between the mating connection portion and shaft body thereof and biasable with the respective pivot shaft in the position-limit groove of the casing and stoppable at one of the two stop blocks of the casing to limit the range of rotation of the pivot shaft.
- the first friction wheel of the friction wheel set of each hinge device comprises an engagement lug extended from the periphery thereof and engaged into the insertion slot of the casing.
- FIG. 1 is an oblique top elevational view of an electronic device and hinge assembly in accordance with the present invention.
- FIG. 2 is an exploded view of the electronic device and hinge assembly in accordance with the present invention.
- FIG. 3 corresponds to FIG. 2 when viewed from another angle.
- FIG. 4 is a sectional side view of the hinge of the electronic device and hinge assembly in accordance with the present invention.
- FIG. 5 is a schematic enlarged view of a part of the electronic device and hinge assembly in accordance with the present invention.
- FIG. 6 is a side view of the present invention, illustrating the angular position of the electronic device and hinge assembly adjusted.
- FIGS. 1-6 an oblique top elevational view of an electronic device and hinge assembly in accordance with the present invention, an exploded view of the electronic device and hinge assembly, another exploded view of the electronic device and hinge assembly, a sectional side view of the hinge of the electronic device and hinge assembly, a schematic enlarged view of a part of the electronic device and hinge assembly and an adjusted side view of the electronic device and hinge assembly are shown.
- the electronic device and hinge assembly comprises an electronic device body 1 , and a plurality of hinge devices 2 .
- the electronic device body 1 comprises a base 11 , a main unit 12 , and a support arm 122 pivotally coupled between the base 11 and the main unit 12 by the hinge devices 2 .
- the base 11 comprises a first pivot-connection block 111 raised from a top wall thereof.
- the first pivot-connection block 111 comprises a first shaft groove 1111 extending along the length thereof on the middle, and two mounting holes 1112 defined in two opposite ends thereof and respectively disposed in communication with two opposite ends of the first shaft groove 1111 .
- the main unit 12 comprises a second pivot-connection block 121 raised from a back wall thereof.
- the second pivot-connection block 121 comprises a second shaft groove 1211 extending along the length thereof on the middle, and two positioning holes 1212 defined in two opposite ends thereof and respectively disposed in communication with two opposite ends of the second shaft groove 1211 .
- the support arm 122 comprises a mounting groove 1221 transversely located in each of opposing top and bottom ends thereof.
- the electronic device body 1 can be an all-in-one computer, i.e., the base 11 and the main unit 12 can be respectively the base and touch panel (LCD monitor) of the all-in-one computer.
- the all-in-one computer has built in the touch panel (LCD monitor) thereof a motherboard with related electronic component parts (such as processor, memory, display card, connectors, etc.), hard disk drive, CD-ROM, power supply device, cooling fan, etc.
- the base 11 can be made in the form of a computer mainframe, and the main unit 12 can be a LCD monitor mating with the base 11 .
- the electronic device body 1 can be configured as a point of sales (POS) system, electronic ordering system (EOS), computer assisted ordering (CAO) system, notebook computer, printer, or any other flip-up or swivel electronic device.
- POS point of sales
- EOS electronic ordering system
- CAO computer assisted ordering
- Each hinge device 2 comprises a cylindrical casing 21 , a pivot shaft 22 , a friction wheel set 23 , a damper 24 , and a locking member 25 .
- the cylindrical casing 21 comprises an accommodation chamber 20 axially defined therein, an opening 201 defined in one end thereof in communication with the accommodation chamber 20 , an axle hole 211 axially extending through the two opposite ends thereof in a bottom side relative to the accommodation chamber 20 , an insertion slot 212 radially cut through the peripheral wall thereof near the opening 201 and disposed in communication with the accommodation chamber 20 , a position-limit groove 213 abutted to the opening 201 , two stop edges 2131 located at two opposite sides of the position-limit groove 213 , a first mounting plate 214 extended from the opposite end thereof remote from the opening 201 , a plurality of mounting through holes 2141 located in the first mounting plate 214 , and a locating slot 215 located in the first mounting plate 214 in communication with the axle hole 211 .
- the pivot shaft 22 comprises a shaft body 221 inserted through the axle hole 211 of the casing 21 , an expanded mating connection portion 222 located at one end of the shaft body 221 and disposed outside the opening 201 of the casing 21 , a stop block 2221 connected between the mating connection portion 222 and the shaft body 221 and movable with the shaft body 221 in the position-limit groove 213 to selectively stop against one of the two stop edges 2131 of the casing 21 , an outer thread 223 spirally extending around the periphery of the shaft body 221 within the accommodation chamber 20 , a cut plane (not shown) located on the periphery of the shaft body 221 and abutted to one end of the outer thread 223 within the accommodation chamber 20 , a retaining groove 224 extending around the periphery of the shaft body 221 and disposed outside the axle hole 211 and suspending in the locating slot 215 , a retaining ring 225 fastened to the retaining groove 224 and stopped at a part of
- the friction wheel set 23 and the damper 24 are mounted around the shaft body 221 of the pivot shaft 22 and positioned between the outer thread 223 and the casing 21 .
- the friction wheel set 23 comprises a first friction wheel 231 and a second friction wheel 232 .
- the first friction wheel 231 comprises a plurality of recessed portions 2311 equiangularly spaced at one side thereof.
- the second friction wheel 232 comprises a plurality of raised portions 2321 equiangularly spaced at one side thereof and respectively facing toward the recessed portions 2311 .
- the first friction wheel 231 further comprises an engagement lug 2312 extended from the outer perimeter thereof and engaged into the insertion slot 212 to stop the first friction wheel 231 from rotation relative to the casing 21 .
- the damper 24 comprises a plurality of elastic members 241 such as compression springs, spring leaves or torsion springs, and two washers 242 stopped at two opposite sides of the elastic members 241 .
- One washer 242 of the damper 24 is abutted against the second friction wheel 232 .
- the second friction wheel 232 and the washers 242 each define therein a non-circular center mounting hole (not shown) set into engagement with the cut plane at the periphery of the shaft body 221 .
- the locking member 25 for example, lock nut
- the casing 21 of each hinge device 2 and each mounting hole 1112 in the first pivot-connection block 111 and each positioning hole 1212 in the second pivot-connection block 121 can be configured having a non-circular cross section, such as rectangular, elliptical, rhombic or polygonal cross section. After fitting of the casings 21 of the hinge devices 2 into the respective mounting holes 1112 and positioning holes 1212 in the first and second pivot-connection block 111 , 121 , the casings 21 of the hinge devices 2 are prohibited from rotation relative to the base 11 or main unit 12 of the electronic device body 1 .
- the support arm 122 can be eliminated from the electronic device body 1 , and two hinge devices 2 can be used to pivotally connect the second pivot-connection block 121 of the main unit 12 to the first pivot-connection block 111 of the base 11 .
- the user can bias the main unit 12 of the electronic device body 1 through a desired angle, causing the shaft body 221 of the pivot shaft 22 of each associated hinge device 2 to be rotated by the second pivot-connection block 121 of the main unit 12 or the support arm 122 in the axle hole 211 of the respective associating casing 21 in the same angle, at the same time, each raised portion 2321 of the second friction wheel 232 of the friction wheel set 23 of each associating hinge device 2 is shifted from one recessed portion 2311 of the respective associating first friction wheel 231 to another.
- each raised portion 2321 is moved away from one recessed portion 2311 before reaching to another recessed portion 2311 , the second friction wheel 232 imparts an axial pressure to the adjacent washer 242 of the damper 24 against the respective associating elastic members 241 , and thus, each respective pivot shaft 22 produces no torque during its rotation at this time.
- the respective elastic members 241 release their elastic potential energy to hold down the raised portions 2321 of the respective second friction wheels 232 of the respective hinge devices 2 in the respective recessed portions 2311 of the respective first friction wheels 231 , and thus, the main unit 12 is held in the desired angle, at the same time, the elastic members 241 of the respective dampers 24 are respectively abutted against the respective washers 242 , providing a damping effect.
- the elastic potential energy of the associating elastic members 241 is relatively adjusted, and thus, the torque produced by the respective damper 24 during rotation of the respective pivot shaft 22 is relatively adjusted to buffer the biasing speed of main unit 12 during its angular adjustment by the user.
- the invention enhances angular adjustment smoothness and stability.
- the raised portions 2321 of the second friction wheel 232 of the friction wheel set 23 of each hinge device 2 are shifted relative to the recessed portions 2311 of the respective associating first friction wheel 231 , and the elastic potential energy of the elastic members 241 of the damper 24 of each hinge device 2 can positively hold down the raised portions 2321 of the second friction wheel 232 of the friction wheel set 23 of each hinge device 2 in the respective recessed portions 2311 of the respective associating first friction wheel 231 .
- the invention allows adjustment of the main unit 12 of the electronic device body 1 relative to the base 11 or support arm 122 step by step through a series of angles.
- the first friction wheel 231 and second friction wheel 232 of the friction wheel set 23 are easy to fabricate.
- the elastic members 241 of the damper 24 are commercially available components convenient for mass production at a low cost.
- the respective stop block 2221 is moved in the respective position-limit groove 213 and stoppable at one of the two stop edges 2131 at the two opposite sides of the position-limit groove 213 , and thus, the biasing angle of the main unit 12 relative to the base 11 is controlled within a predetermined range, avoiding main unit damage due to overbiasing.
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
Description
- 1. Field of the Invention
- The present invention relates to hinge technology, and more particularly to an electronic device and hinge assembly, which includes an electronic device body including a base and a main unit, and hinge devices to pivotally connect the base and main unit of the electronic device body, wherein each hinge device consists of a pivot shaft, a friction wheel set and a damper for allowing adjustment of the angular position of the main unit relative to the base smoothly and stably through a series of angles.
- 2. Description of the Related Art
- Following fast development of electronic technology, advanced electronic apparatus having the characteristics of strong operational capabilities, high operating speed and small size have been continuously created. With the popularity of computers and networks, most general family or company will use computers and the Internet. Even in the shops, restaurants and other places, we can see the use of computers and the Internet. Further, the retailing industry is moving toward the chain system. Many retail operators adopt point of sales management system (POS), electronic ordering system (EOS) or computer assisted ordering system for registering and calculating transactions, scanning barcodes, drawing up invoices or receipts, ordering, providing the latest news, analyzing and handling product information, membership information and sales data, saving a large amount of manpower and operating costs.
- Further, various different designs of hinge devices are known and widely used in electronic devices to pivotally connect a display device, face panel or outer cover to a mainframe or base, allowing adjustment of the angular position of the display device, face panel or outer cover relative to the mainframe or base. However, a user may apply excessive force to turn the display device, face panel or outer cover relative to the mainframe or base over the limited range of angles, leading to internal flexible circuit board or bus line damage. Further, if the user closes the display device face panel or outer cover on the mainframe or base in a rush, the display device face panel or outer cover can be crushed. There are improved designs of hinge devices capable of providing high torque, however, these improved designs of hinge devices commonly have a complicated structure, and their fabrication requires high precision. Thus, these improved designs of hinge devices are not suitable for mass fabrication, and their manufacturing cost is inevitably high.
- The present invention has been accomplished under the circumstances in view. It is therefore the main object of the present invention to provide an electronic device and hinge assembly, which comprises an electronic device body comprising a base and a main unit, and hinge devices pivotally connecting the base and the main unit for allowing adjustment of the angular position of the main unit relative to the base step by step through a series of angles. Each hinge device comprises a casing affixed to one of the base and main unit of the electronic device body, a pivot shaft connected to the other of the base and main unit of the electronic device body and rotatably inserted through the casing and secured thereto by a retaining ring, and a friction wheel set and a damper mounted on the pivot shaft in the casing and abutted against each other. The friction wheel set comprises a first friction wheel affixed to the casing and having recessed portions equiangularly spaced at one side thereof, and a second friction wheel rotatable with the pivot shaft relative to the first friction wheel and having raised portions respectively engageable into the recessed portions of the first friction wheel. Subject to the functioning of the friction wheel set and the damper, the main unit can be biased relative to the base smoothly and stably and positively positioned in the desired angular position.
- Further, when biasing the main unit relative to the base, the second friction wheel is rotated relative to the first friction wheel, and each raised portion of the second friction wheel is shifted from one recessed portion of the associating first friction wheel to another. After each raised portion moved away from one recessed portion and reached to a respective next recessed portion, elastic members of the damper release an elastic potential energy to hold down the raised portions of the second friction wheel in the respective recessed portions of the first friction wheel. Thus, the hinge devices allow adjustment of the angular position of the main unit relative to the base step by step through a series of angles. Further, the first and second friction wheels and the elastic members of the damper are easy and inexpensive to manufacture.
- Preferably, the pivot shaft of each hinge device further comprises an outer thread extending around the periphery of the shaft body thereof; each hinge device further comprises a locking member threaded onto the outer thread of the shaft body and stopped at the damper against the friction wheel set. Further, by means of adjusting the fastening tightness of the locking member on the outer thread of the pivot shaft, the elastic potential energy of the elastic members of the damper is relatively adjusted, and thus, the torque produced by the damper during rotation of the pivot shaft is relatively adjusted to buffer the biasing speed of main unit during its angular adjustment by the user. Thus, the invention enhances angular adjustment smoothness and stability.
- Preferably, the casing of each hinge further comprises an insertion slot radially cut through the periphery thereof in communication with the accommodation chamber and disposed adjacent to the opening, a position-limit groove located in one end thereof in communication with the opening, and two stop edges located at two opposite sides of the position-limit groove. Further, the pivot shaft of each hinge device further comprises a stop block connected between the mating connection portion and shaft body thereof and biasable with the respective pivot shaft in the position-limit groove of the casing and stoppable at one of the two stop blocks of the casing to limit the range of rotation of the pivot shaft. Further, the first friction wheel of the friction wheel set of each hinge device comprises an engagement lug extended from the periphery thereof and engaged into the insertion slot of the casing.
- Other advantages and features of the present invention will be fully understood by reference to the following specification in conjunction with the accompanying drawings, in which like reference signs denote like components of structure.
-
FIG. 1 is an oblique top elevational view of an electronic device and hinge assembly in accordance with the present invention. -
FIG. 2 is an exploded view of the electronic device and hinge assembly in accordance with the present invention. -
FIG. 3 corresponds toFIG. 2 when viewed from another angle. -
FIG. 4 is a sectional side view of the hinge of the electronic device and hinge assembly in accordance with the present invention. -
FIG. 5 is a schematic enlarged view of a part of the electronic device and hinge assembly in accordance with the present invention. -
FIG. 6 is a side view of the present invention, illustrating the angular position of the electronic device and hinge assembly adjusted. - Referring to
FIGS. 1-6 , an oblique top elevational view of an electronic device and hinge assembly in accordance with the present invention, an exploded view of the electronic device and hinge assembly, another exploded view of the electronic device and hinge assembly, a sectional side view of the hinge of the electronic device and hinge assembly, a schematic enlarged view of a part of the electronic device and hinge assembly and an adjusted side view of the electronic device and hinge assembly are shown. The electronic device and hinge assembly comprises anelectronic device body 1, and a plurality ofhinge devices 2. - The
electronic device body 1 comprises abase 11, amain unit 12, and asupport arm 122 pivotally coupled between the base 11 and themain unit 12 by thehinge devices 2. Thebase 11 comprises a first pivot-connection block 111 raised from a top wall thereof. The first pivot-connection block 111 comprises afirst shaft groove 1111 extending along the length thereof on the middle, and two mountingholes 1112 defined in two opposite ends thereof and respectively disposed in communication with two opposite ends of thefirst shaft groove 1111. Themain unit 12 comprises a second pivot-connection block 121 raised from a back wall thereof. The second pivot-connection block 121 comprises asecond shaft groove 1211 extending along the length thereof on the middle, and twopositioning holes 1212 defined in two opposite ends thereof and respectively disposed in communication with two opposite ends of thesecond shaft groove 1211. Thesupport arm 122 comprises a mountinggroove 1221 transversely located in each of opposing top and bottom ends thereof. - Further, the
electronic device body 1 can be an all-in-one computer, i.e., thebase 11 and themain unit 12 can be respectively the base and touch panel (LCD monitor) of the all-in-one computer. Further, the all-in-one computer has built in the touch panel (LCD monitor) thereof a motherboard with related electronic component parts (such as processor, memory, display card, connectors, etc.), hard disk drive, CD-ROM, power supply device, cooling fan, etc. Alternatively, thebase 11 can be made in the form of a computer mainframe, and themain unit 12 can be a LCD monitor mating with thebase 11. In actual application, theelectronic device body 1 can be configured as a point of sales (POS) system, electronic ordering system (EOS), computer assisted ordering (CAO) system, notebook computer, printer, or any other flip-up or swivel electronic device. - Each
hinge device 2 comprises acylindrical casing 21, apivot shaft 22, a friction wheel set 23, adamper 24, and a lockingmember 25. Thecylindrical casing 21 comprises anaccommodation chamber 20 axially defined therein, anopening 201 defined in one end thereof in communication with theaccommodation chamber 20, anaxle hole 211 axially extending through the two opposite ends thereof in a bottom side relative to theaccommodation chamber 20, aninsertion slot 212 radially cut through the peripheral wall thereof near theopening 201 and disposed in communication with theaccommodation chamber 20, a position-limit groove 213 abutted to theopening 201, twostop edges 2131 located at two opposite sides of the position-limit groove 213, afirst mounting plate 214 extended from the opposite end thereof remote from theopening 201, a plurality of mounting throughholes 2141 located in the first mountingplate 214, and a locatingslot 215 located in the first mountingplate 214 in communication with theaxle hole 211. - The
pivot shaft 22 comprises ashaft body 221 inserted through theaxle hole 211 of thecasing 21, an expandedmating connection portion 222 located at one end of theshaft body 221 and disposed outside theopening 201 of thecasing 21, astop block 2221 connected between themating connection portion 222 and theshaft body 221 and movable with theshaft body 221 in the position-limit groove 213 to selectively stop against one of the twostop edges 2131 of thecasing 21, anouter thread 223 spirally extending around the periphery of theshaft body 221 within theaccommodation chamber 20, a cut plane (not shown) located on the periphery of theshaft body 221 and abutted to one end of theouter thread 223 within theaccommodation chamber 20, a retaininggroove 224 extending around the periphery of theshaft body 221 and disposed outside theaxle hole 211 and suspending in the locatingslot 215, a retainingring 225 fastened to the retaininggroove 224 and stopped at a part of thecasing 21 outside theaxle hole 211 to prohibit theshaft body 221 from falling out of thecasing 21, asecond mounting plate 226 outwardly extended from themating connection portion 222 opposite to thestop block 2221, and a plurality of mounting throughholes 2261 located in thesecond mounting plate 226. - The friction wheel set 23 and the
damper 24 are mounted around theshaft body 221 of thepivot shaft 22 and positioned between theouter thread 223 and thecasing 21. The friction wheel set 23 comprises afirst friction wheel 231 and asecond friction wheel 232. Thefirst friction wheel 231 comprises a plurality of recessedportions 2311 equiangularly spaced at one side thereof. Thesecond friction wheel 232 comprises a plurality of raisedportions 2321 equiangularly spaced at one side thereof and respectively facing toward the recessedportions 2311. Thefirst friction wheel 231 further comprises anengagement lug 2312 extended from the outer perimeter thereof and engaged into theinsertion slot 212 to stop thefirst friction wheel 231 from rotation relative to thecasing 21. Thedamper 24 comprises a plurality ofelastic members 241 such as compression springs, spring leaves or torsion springs, and twowashers 242 stopped at two opposite sides of theelastic members 241. Onewasher 242 of thedamper 24 is abutted against thesecond friction wheel 232. Thesecond friction wheel 232 and thewashers 242 each define therein a non-circular center mounting hole (not shown) set into engagement with the cut plane at the periphery of theshaft body 221. Thus, rotating thepivot shaft 22 through an angle can carry thesecond friction wheel 232 of the friction wheel set 23 and thewashers 242 of thedamper 24 to rotate synchronously. Further, the locking member 25 (for example, lock nut) is threaded onto theouter thread 223 of thepivot shaft 22 and stopped against theother washer 242 of thedamper 24. - When assembling the electronic device and hinge assembly, connect two
hinge devices 2 between the two opposite ends of the mountinggroove 1221 at the bottom end of thesupport arm 122 and the two mountingholes 1112 in the two opposite ends of thefirst shaft groove 1111 of the first pivot-connection block 111 at thebase 11 of theelectronic device body 1 by: inserting thecasing 21 and first mountingplate 214 of eachrespective hinge device 2 into onerespective mounting hole 1112 in thefirst shaft groove 1111 and fixedly fastening the mounting throughhole 2141 of the first mountingplate 214 of eachrespective hinge device 2 to the first pivot-connection block 111 with fastening elements (such as screws or rivets) and then inserting thesecond mounting plate 226 with themating connection portion 222 of thepivot shaft 22 of eachrespective hinge device 2 into the mountinggroove 1221 at the bottom end of thesupport arm 122 and fixedly fastening the mounting throughhole 2261 of thesecond mounting plate 226 of eachrespective hinge device 2 to thesupport arm 122 with fastening elements (such as screws or rivets). Thereafter, connect the other twohinge devices 2 between the two opposite ends of the mountinggroove 1221 at the top end of thesupport arm 122 and the twopositioning holes 1212 in the two opposite ends of thesecond shaft groove 1211 of the second pivot-connection block 121 at themain unit 12 of theelectronic device body 1 by: inserting thecasing 21 and first mountingplate 214 of eachrespective hinge device 2 into onerespective positioning hole 1212 in thesecond shaft groove 1211 and fixedly fastening the mounting throughhole 2141 of the first mountingplate 214 of eachrespective hinge device 2 to the second pivot-connection block 121 with fastening elements (such as screws or rivets) and then inserting thesecond mounting plate 226 with themating connection portion 222 of thepivot shaft 22 of eachrespective hinge device 2 into the mountinggroove 1221 at the top end of thesupport arm 122 and fixedly fastening the mounting throughhole 2261 of thesecond mounting plate 226 of eachrespective hinge device 2 to thesupport arm 122 with fastening elements (such as screws or rivets). - Further, the
casing 21 of eachhinge device 2 and each mountinghole 1112 in the first pivot-connection block 111 and eachpositioning hole 1212 in the second pivot-connection block 121 can be configured having a non-circular cross section, such as rectangular, elliptical, rhombic or polygonal cross section. After fitting of thecasings 21 of thehinge devices 2 into the respective mountingholes 1112 andpositioning holes 1212 in the first and second pivot-connection block casings 21 of thehinge devices 2 are prohibited from rotation relative to the base 11 ormain unit 12 of theelectronic device body 1. Further, as an alternate form of the present invention, thesupport arm 122 can be eliminated from theelectronic device body 1, and twohinge devices 2 can be used to pivotally connect the second pivot-connection block 121 of themain unit 12 to the first pivot-connection block 111 of thebase 11. - If the user wishes to adjust the angular position of the
main unit 12 relative to thebase 11, the user can bias themain unit 12 of theelectronic device body 1 through a desired angle, causing theshaft body 221 of thepivot shaft 22 of each associatedhinge device 2 to be rotated by the second pivot-connection block 121 of themain unit 12 or thesupport arm 122 in theaxle hole 211 of the respective associatingcasing 21 in the same angle, at the same time, each raisedportion 2321 of thesecond friction wheel 232 of the friction wheel set 23 of each associatinghinge device 2 is shifted from one recessedportion 2311 of the respective associatingfirst friction wheel 231 to another. After each raisedportion 2321 is moved away from one recessedportion 2311 before reaching to another recessedportion 2311, thesecond friction wheel 232 imparts an axial pressure to theadjacent washer 242 of thedamper 24 against the respective associatingelastic members 241, and thus, eachrespective pivot shaft 22 produces no torque during its rotation at this time. After each raisedportion 2321 moved away from one recessedportion 2311 and reached to a respective next recessedportion 2311, the respectiveelastic members 241 release their elastic potential energy to hold down the raisedportions 2321 of the respectivesecond friction wheels 232 of therespective hinge devices 2 in the respective recessedportions 2311 of the respectivefirst friction wheels 231, and thus, themain unit 12 is held in the desired angle, at the same time, theelastic members 241 of therespective dampers 24 are respectively abutted against therespective washers 242, providing a damping effect. Further, by means of adjusting the fastening tightness of the lockingmember 25 on theouter thread 223 of the associatingpivot shaft 22, the elastic potential energy of the associatingelastic members 241 is relatively adjusted, and thus, the torque produced by therespective damper 24 during rotation of therespective pivot shaft 22 is relatively adjusted to buffer the biasing speed ofmain unit 12 during its angular adjustment by the user. Thus, the invention enhances angular adjustment smoothness and stability. - During rotation of the
pivot shaft 22 of eachhinge device 2, the raisedportions 2321 of thesecond friction wheel 232 of the friction wheel set 23 of eachhinge device 2 are shifted relative to the recessedportions 2311 of the respective associatingfirst friction wheel 231, and the elastic potential energy of theelastic members 241 of thedamper 24 of eachhinge device 2 can positively hold down the raisedportions 2321 of thesecond friction wheel 232 of the friction wheel set 23 of eachhinge device 2 in the respective recessedportions 2311 of the respective associatingfirst friction wheel 231. Thus, the invention allows adjustment of themain unit 12 of theelectronic device body 1 relative to the base 11 orsupport arm 122 step by step through a series of angles. Further, thefirst friction wheel 231 andsecond friction wheel 232 of the friction wheel set 23 are easy to fabricate. Further, theelastic members 241 of thedamper 24 are commercially available components convenient for mass production at a low cost. - Further, when adjusting the angular position of the
main unit 12 of theelectronic device body 1 to bias thepivot shaft 22 of eachrespective hinge device 2 in therespective axle hole 211 of therespective casing 21, therespective stop block 2221 is moved in the respective position-limit groove 213 and stoppable at one of the twostop edges 2131 at the two opposite sides of the position-limit groove 213, and thus, the biasing angle of themain unit 12 relative to thebase 11 is controlled within a predetermined range, avoiding main unit damage due to overbiasing. - Although a particular embodiment of the invention has been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.
Claims (8)
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US10880423B2 (en) * | 2018-07-31 | 2020-12-29 | Aslam Ajani | Holder |
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US10159158B2 (en) | 2016-04-14 | 2018-12-18 | Microsoft Technology Licensing, Llc | Device with a rotatable display |
US10172248B1 (en) | 2016-04-14 | 2019-01-01 | Microsoft Technology Licensing, Llc | Device with a rotatable display |
US10345851B2 (en) | 2016-04-14 | 2019-07-09 | Microsoft Technology Licensing, Llc | Device with a rotatable display |
US9936593B2 (en) * | 2016-04-14 | 2018-04-03 | Microsoft Technology Licensing, Llc | Device with a rotatable display |
US10996710B2 (en) | 2016-04-14 | 2021-05-04 | Microsoft Technology Licensing, Llc | Device with a rotatable display |
US10999944B2 (en) | 2016-04-26 | 2021-05-04 | Microsoft Technology Licensing, Llc | Structural device cover |
US9946309B2 (en) | 2016-06-10 | 2018-04-17 | Microsoft Technology Licensing, Llc | Device wiring |
US10754391B2 (en) | 2016-08-08 | 2020-08-25 | Microsoft Technology Licensing, Llc | Axial cam hinge |
USD888054S1 (en) * | 2018-02-05 | 2020-06-23 | Dell Products L.P. | Monitor with integrated camera |
USD886819S1 (en) * | 2018-04-19 | 2020-06-09 | Compal Electronics, Inc. | Notebook computer |
USD935459S1 (en) * | 2019-03-19 | 2021-11-09 | Elo Touch Solutions, Inc. | Electronic device |
CN216619151U (en) * | 2021-11-26 | 2022-05-27 | 广州泊霖科技有限公司 | Turntable support and flat plate protective shell using same |
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US6561333B2 (en) * | 2000-07-14 | 2003-05-13 | Reell Precision Manufacturing Corporation | Spring clutch utilizing torque slip clips |
KR101063408B1 (en) * | 2004-10-11 | 2011-09-07 | 삼성전자주식회사 | Hinge Device and Electronic Device Having the Same |
CN101614236B (en) * | 2008-06-27 | 2012-05-30 | 鸿富锦精密工业(深圳)有限公司 | Hinge structure |
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