GB2290345A - Rotational friction hinge - Google Patents
Rotational friction hinge Download PDFInfo
- Publication number
- GB2290345A GB2290345A GB9411914A GB9411914A GB2290345A GB 2290345 A GB2290345 A GB 2290345A GB 9411914 A GB9411914 A GB 9411914A GB 9411914 A GB9411914 A GB 9411914A GB 2290345 A GB2290345 A GB 2290345A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rotational
- compression ring
- mounting member
- friction hinge
- relative
- 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.)
- Withdrawn
Links
- 230000006835 compression Effects 0.000 claims abstract description 66
- 238000007906 compression Methods 0.000 claims abstract description 66
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000004033 plastic Substances 0.000 claims abstract description 4
- 229920003023 plastic Polymers 0.000 claims abstract description 4
- 238000012423 maintenance Methods 0.000 claims description 2
- 239000004677 Nylon Substances 0.000 abstract description 2
- 229920001778 nylon Polymers 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/10—Arrangements for locking
- F16C11/103—Arrangements for locking frictionally clamped
-
- 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
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1675—Miscellaneous details related to the relative movement between the different enclosures or enclosure parts
- G06F1/1679—Miscellaneous details related to the relative movement between the different enclosures or enclosure parts for locking or maintaining the movable parts of the enclosure in a fixed position, e.g. latching mechanism at the edge of the display in a laptop or for the screen protective cover of a PDA
-
- 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
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1675—Miscellaneous details related to the relative movement between the different enclosures or enclosure parts
- G06F1/1681—Details related solely to hinges
-
- 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
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2999/00—Subject-matter not otherwise provided for in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
A rotational friction hinge comprises a mounting bracket 12 having a flange 15 and a pivot shaft 17. A second mounting member 19 has a hexagonal external profile and a bore 23 which is larger than the outside diameter of the shaft 17. A compression ring 21 formed of a plastics material such as nylon is pressed into the bore 23 so as to be in a state of radial compression. The shaft 17 is a press fit in a bore 37 of the compression ring 21 and is held in position by a c-ring 27 engaging with groove 14 formed on a tapered extension 36 of the shaft. The compression ring 21 exerts a radial friction force on the shaft to maintain the two mounting members in any desired relative rotational position. The hinge provides infinitely adjustable positioning of a first member relative to a second and may be used with electronic equipment such as lap-top computers. <IMAGE>
Description
Background of the Invention
The present invention relates to hinges of the sort which are used for devices such as the hinge mechanisms of electronic apparatus such as notebook or palmtop computers, handheld electronic organizers or the like, or other apparatus having first portions which are rotationally movable relative to other, second portions of the apparatus.
In such apparatus it is often desirable to construct the hinges in such a manner that the first portion, such as a lid, may be rotationally moved between any number of possible positions, and once placed in one such position, such as by exertion of hand pressure, will remain in the desired position, until otherwise moved by the user, and will not move, for example, under the influence of the force of gravity. Such hinges are sometimes known as infinitely adjustable hinges.
One known technique for obtaining infinite adjustability of a hinge is to provide a friction producing member between relatively rotating members. A certain level of static friction force will be produced, which will resist the relative rotation of the members.
However, if an external force exerted on the members exceeds the maximum static friction force which the friction producing member is capable of producing, the members will begin to rotate relative to one another. Once the external force is removed, or drops below the maximum static friction force, the members will tend to stop and remain in the relative positions they were in at the time the external force was removed or reduced.
One such frictional hinge is disclosed in Schwarz, U.S. Pat. No.
4,639,147. The hinges of Schwarz are intended for such usages as the lids of phonograph turntables, toilet seats, or tillers on sailing craft. The hinge construction includes one or more hinge pins, mounted to either a base or the member to be rotationally moved, surrounded by compressible bushings made of soft pliable materials, such as polyethylene or soft rubber. The pins and bushings are placed in bores, located in the other of the base or the member to be rotationally moved, the bores having internal diameters which are equal to or greater than the external diameter of the bushings. An axially adjustable biasing means axially presses at least one of the bushings against an end wall in at least one of the bores.Under the action of the biasing means, the bushings are axially compressed, causing radial expansion of the bushings so that the bushings frictionally engage the inner circumferential surfaces of the bores, and the outer surfaces of the pins.
Another prior art friction hinge is disclosed in Emain, U.S. Pat.
No. 4,428,094. The hinge in Emain is for eyeglass frames, and comprises a compressible bushing which is both radially compressed around the hinge screw and within the bore created by the male tenon of the hinge, and axially compressed between the female mortise elements. The frictional forces, which are created to exert rotational braking forces on the hinge elements, are substantially created between the inner surface of the bore of the male tenon, the bushing, and the inwardly facing end surfaces of the female mortise elements.
SUMMARY OF INVENTION
The present invention is a rotational friction hinge, for enabling substantially infinitely adjustable positioning of a first member by rotational movement relative to a second member, upon exertion of a predetermined minimum rotational force upon said first and second members, and for subsequent maintenance of the first member in place relative to the second member after removal of the rotational force greater than the predetermined minimum rotational force.
The rotational friction hinge comprises a first mounting member, operably configured for attachment to one of the first and second members; a rotational shaft member, having an external diameter, operably associated with the first mounting member and rotationally fixed relative thereto and a second mounting member, operably configured for rotational movement relative to the first mounting member and the rotational shaft member, and operably configured for attachment to and rotation together with the other of the first and second members The second mounting member has an aperture therethrough having an internal diameter greater than the external diameter of the rotational shaft member, the rotational shaft member being positioned and telescopically received substantially concentrically within the aperture of the second mounting member.
In addition, means for providing frictional resistance to rotational movement of the first mounting member relative to the second mounting member, are operably associated with the first and second mounting members, the means for providing frictional resistance causing frictional resistance against relative rotation of the second mounting member relative to the first mounting mem ber, directed radially against at least the rotational shaft member, sufficient to maintain the first member in any desired rotational position, relative to the second member, upon removal of the rotational force greater than the predetermined minimum rotational force.
In a preferred embodiment, the means for providing frictional resistance comprises a radially substantially rigid, semi-elastic compression ring member disposed in the aperture of the second mounting member, the compression ring member having a further aperture disposed therein for receiving the rotational shaft member, the further aperture having an internal diameter which is less than the external diameter of the rotational shaft member, such that when the rotational shaft member is received within the aperture within the compression ring member, the compression ring member exerts radial compressive force on the rotational shaft member.
The compression ring member is disposed within the aperture of the second mounting member in a state of radial compression.
The second mounting member is in the form of a polygonal nut having a round internal aperture. In one embodiment, the polygonal nut has a hexagonal outer surface.
The invention may alternatively also include first means for precluding axial movement of the means for providing frictional resistance means, operably disposed between the first mounting member and the rotational shaft member and axially and rotationally fixed relative thereto; and second means for precluding axial movement of the means for providing frictional resistance, operably disposed on the rotational shaft member, and fixed against axial movement relative thereto. Thus, the means for providing frictional resistance are disposed axially between the first and second means for precluding axial movement of the means for providing frictional resistance, such that the means for providing frictional resistance are substantially fixed against axial movement relative to the rotational shaft member.
Preferably, the substantially rigid, semi-elastic compression ring member comprises an annular member fabricated from a resilient plastics material.
A bore is disposed in one of the first and second members, the second mounting member being received in the bore, the bore and the second mounting member being cooperatively configured so as to key the second mounting member against rotation relative to the one of the first and second members with which it is operably associated. Preferably, the bore in the one of the first and second members has a generally polygonal configuration. In one embodiment, the bore in the one of the first and second members has a generally hexagonal configuration.
The first mounting member has at least one aperture disposed therethrough and is attached to one of the first and second members by at least one fastener member extending through the at least one aperture into the one of the first and second members. In a preferred embodiment, the at least one fastener member is threaded.
The rotational friction hinge also includes means for facilitating inserting receipt of the compression ring member onto the rotational shaft member, so as to preclude damage to the compression ring member during receipt of same by the rotational shaft member, which may comprise at least one conical surface circumferentially disposed upon the rotational shaft member.
Brief Descrintion of the Drawings
Fig. 1 is a fragmentary perspective view of the rotational friction hinge, according to a preferred embodiment of the invention, shown in position in a portion of an apparatus housing;
Fig. 2 is an exploded view of the rotational friction hinge according to Fig. 1;
Fig. 3 is a perspective view of the rotational friction hinge according to Fig. 1;
Fig. 4 is a side elevation, in section, of the rotational friction hinge according to Fig. 1, generally taken along line 4-4 of Fig. 3; and showing in elevated section the bore in the housing in which a portion of the hinge is received; and
Fig. 5 is an enlarged perspective view of the tapper portion of the hinge shaft.
Detailed Description of the Drawings While this invention is susceptible of embodiment in many dif
ferent forms, there is shown in the drawings and will be described
in detail herein, a specific embodiment, with the understanding
that the present disclosure is to be considered as an exemplifica
tion of the principles of the invention and is not intended to limit
the invention to the embodiment illustrated.
The rotational friction hinge 10 of the present invention is illus
trated herein in Figs. 1-4. Hinge 10 includes a mounting bracket
12, which has a generally flattened rectangular cross section.
One or more apertures 13 are formed in mounting bracket 12, to
enable hinge 10 to be affixed to one portion 1 6 of a housing or
other part of an apparatus, such as by screws 20 or bolts or pegs intergrallvformed as part of the housing which are then capped or
upset. Hinge 10 also includes groove 14, annular flange 1 5 and
hinge shaft 17. In a preferred embodiment of the invention,
mounting bracket 12, annular flange 15 and hinge shaft 17 are all
formed as part of a single contiguous piece of material, such as
steel. Also in a preferred embodiment of the invention, mounting
bracket 12, groove 14, annular flange 1 5 and hinge shaft 1 7 are
formed by machining.
Hinge shaft 17 is surrounded by nut 19, into which compres
sion ring 21 has been set, in a manner to be described hereinafter.
Nut 1 9 is preferably formed from a metallic material, such as
brass, and has a generally smooth circular internal surface 23 and
an outer surface 25, which, as shown, has a hexagonal configura
tion, although other configurations may be employed and still be within the contemplated scope of the prsentinvention.
Compression ring 21 is preferably formed from a. resilient nonpliable, relatively rigid, yet relatively slightly compressible-material, such as a semi-elastic plastic material like nylon; acetal or a material known as ralfon, which may be obtained from Sunco Manufacturing Co. The material must have a sufficient coefficient of friction, when in contact with the steei of the hinge- shaft 17 and- the brase- of nut 19, to develop- the frictional torque necessary to provide the desired infinite adjustability in the parbsuiar application.When the components. of hinge 10 are assembled as illustrated, compression ring 21 is. in- a state of radial compression, and exerts.
radial friction forces against hinge shaft 17 and inner surface 23 of nut 19. Comprassion ring 21 and nut 19 are constrained. against axial movement relative to hinge shaft 17 by the presence- of Cring 27; which is fitted around hinge shaft 17, between compression ring 21 and annular ridge 29, which extends radial outwardly from shift shaft 17, and which, in a preferred embodiment of the invention, is formed integrally with hinge shaft 17.
Hinge shaft 17 may also be provi.dedwith a-tapperper-tion 36, generally, which includes conical portion 38, and conical portion 39- of ridge 29, so as to provide a decreasing diameter along hinge shaft 17 to screw-threaded portion 31 at its end. Hinge shaft 17, along its length from annular flange 15, up to conical portion 3, has a substantially uniform cross-sectional diameter and a relative- ly smooth circumferential surfaces Screw-threaded portion 31 has a decreasing average cross-sectional diameter.
The procedure for manufacture and assembly of the rotational friction hinge 10 is as follows. As previously mentioned, the mounting bracket 12, annular flange 15 and hinge shaft 17 are all formed from a piece of metal, such as steel, preferably by automatic lathe machining Likewise, nut 19- and compression ring 21 are also formed by machining processes. Prior to insertion into nut 19, compression ring 21- has an outer diameter which is slightly greater than the inner diameter of nut 19. In addition, compres sion ring 21 may also have a central bore 37 preliminarily formed therein, such as by drilling. Compression ring 21 is then pressed into nut 19, thus placing compression ring 21 in a state of radial compression.After compression ring 21 has been fitted into nut 19, central bore 37 of compression ring 21, if one has been already preliminarily provided, is redrilled, to assure that the central bore is concentrically positioned relative to ring 19. The redrilling also assures that the central bore 37 has a substantially constant diameter along its length. Central bore 37 has, prior to mounting on hinge shaft 17, an internal diameter which is slightly less than the outer diameter of the portion of hinge shaft 17 extending between conical portion 38 and annular flange 1 5. Annular ridge 29, as indicated hereinabove, also has a conical portion 39, the narrowest portion of which has a diameter which is less than the diameter of central bore 37.Accordingly tapper portion 36 provides the surface which acts as a tap to permit compression ring 21 to be pressed onto hinge shaft 17. The screw-threaded portion 31 of hinge shaft 17 has an initial outer diameter, at tip 35, which is substantially less than the diameter of the internal bore 37 of compression ring 21. The widest portion of screw-threaded portion 31, while also smaller in diameter than the internal bore 37 of compression ring 21, so as not to damage the internal surface of internal bore 37, is wide enough such that when compression ring 21 and nut 19 are initially placed upon screw-threaded portion 31, the portion 31 acts as an initial rough guide to reduce the angle of potential misalignment prior to pressing of compression ring 21 onto conical surfaces 38 and 39, and thereafter onto hinge shaft 17.
The conical portions 38 and 39 of tapper portion 36 act as the sliding face, to enable hinge shaft 17 to be inserted into internal bore 37. The conical portions 38 and 39 also help prevent damage or disruption to the inner surface of bore 37, so as to assure that the frictional characteristics of the inner surface of bore 37, relative to shaft 17, are not affected during the assembly process. As compression ring 21 is pressed onto hinge shaft 17, such as through the use of a pneumatic press, additional radial compression is applied to compression ring 21. At this stage of assembly, the components so far assembled are tested to assure concentric alignment of compression ring 21, nut 1 9 and hinge shaft 17 relative to one another.After nut 1 9 and compression ring 21 have been fully pressed onto hinge shaft 17 to a position substantially adjacent to, but not necessarily bearing against annular flange 15, C-ring 27 is snapped onto hinge shaft 17, in groove 14, between compression ring 21 and annular ridge 29. Cring 27 is substantially adjacent to, but not necessarily bearing against the axial ends of nut 19 and compression ring 21 that are distal from annular flange 15.
Nut 19, as previously stated, has, in a preferred embodiment of the invention, a hexagonal surface, although other non-circular polygonal configurations or even other keying elements such as an axial rib could also be employed. The non-circular outer surface of nut 19 is provided so that one part 22 of a housing or apparatus (as shown in broken lines in Fig. 1) may be provided with a similarly configured bore 24 or aperture into which the end of hinge 10, at which nut 19 is located, can be press fitted and keyed against rotation relative to the housing. The other end of hinge 10, at which mounting bracket 12 is located, can then be attached, as previously described, by bolts or screws through apertures 13, to another portion of the housing or apparatus.Due to the radial compression exerted by compression ring 21, both outwardly against nut 19 and inwardly against hinge shaft 17, frictional force is exerted between hinge shaft 17 and compression ring 21, and between compression ring 21 and the inner surface 23 of nut 19.
The amount of radial compression which is developed in compression ring 21 is such that when the two portions 16, 22 of an apparatus housing, such as shown in Figs. 1 and 4, are grasped and forces are exerted which would tend to rotate the two portions relative to one another around hinge shaft 17, the force exerted would overcome the amount of frictional force created by compression ring 21 and the two portions 16, 22 of the housing would thus move relative to one another. It is desired and intended that in rotational friction hinge 10, the relative movement of components which would occur during such an operation would be between compression ring 21 and hinge shaft 17.However, once the applied force tending to rotate the two portions of the housing is removed, the amount of friction developed by the radial compression of compression ring 21 is great enough to hold the two portions 16, 22 of the housing in whatever relative position had been attained at the time the external applied force was removed. For example, the two portions 16, 22 of the housing will not tend to close or fall further open under the action of the force of gravity.
It should be noted that the frictional force necessary for hinge 10 to operate as an infinitely adjustable hinge is sufficiently provided by the suitably determined degree of radial compression with which compression ring 21 is provided, once seated within nut 19 and onto hinge shaft 17. No axial compression is required to generate the radial compression. Further, axial contact, and thus axial friction, between ring 1 9 and/or compression ring 21, and flange 1 5 is not needed to accomplish the desired rotational friction. A hinge, such as disclosed herein, can be expected to develop a maximum static frictional torque of at least .145 ft-lbs. (20 kg-mm), although the amount of possible torque can be varied by suitable variation of the compression of compression ring 21, and increasing or shortening of the lengths of compression ring 21, nut 19 and shaft 17, as desired.
The foregoing description and drawings merely explain and illustrate the invention and the invention is not limited thereto except in so far as the appended claims are so limited, as those skilled in the art who have the disclosure before them will be able to make modifications and variations therein without departing from the scope of the invention.
Claims (1)
- What is claimed is:-1 A rotational friction hinge, for enabling substantially infinitely adjustable positioning of a first member by rotational movement relative to a second member, upon exertion of a predetermined minimum rotational force upon said first and second members, and for subsequent maintenance of the first member in place relative to the second member after removal of the rotational force greater than the predetermined minimum rotational force comprising:: a first mounting member, operably configured for attachment to one of the first and second members; a rotational shaft member, having an external diameter, operably associated with the first mounting member and rotationally fixed relative thereto; a second mounting member, operably configured for rotational movement relative to the first mounting member and the rotational shaft member, and operably configured for attachment to and rotation together with the other of the first and second members, the second mounting member having an aperture therethrough having an internal diameter greater than the external diameter of the rotational shaft member, the rotational shaft member being positioned and telescopically received substantially concentrically within the aperture of the second mounting member; and means for providing frictional resistance to rotational movement of the first mounting member relative to the second mounting member, operably associated with the first and second mounting members, the means for providing frictional resistance causing frictional resistance against relative rotation of the second mounting member relative to the first mounting member, directed radially against at least the rotational shaft member, sufficient to maintain the first member in any desired rotational position, relative to the second member, upon removal of the rotational force greater than the predetermined minimum rotational force.-2 The rotational friction hinge according to claim 1 wherein the means for providing frictional resistance comprises: a radially substantially rigid, semi-elastic compression ring member disposed in the aperture of the second mounting member, the compression ring member having a further aperture disposed therein for receiving the rotational shaft member, the further aperture having an internal diameter which is less than the external diameter of the rotational shaft member, such that when the rotational shaft member is received within the aperture within the compression ring member, the compression ring member exerts radial compressive force on the rotational shaft member.-3 The rotational friction hinge according to claim 2 wherein the compression ring member is disposed within the aperture of the second mounting member in a state of radial compression.-4 The rotational friction hinge according to claim 2 wherein the second mounting member is in the form of a polygonal nut having a round internal aperture.-5 The rotational friction hinge according to claim 4 wherein the polygonal nut has a hexagonal outer surface.-6 The rotational friction hinge according to claim 1, further com prising: first means, for precluding axial movement of the means for providing frictional resistance operably disposed between the first mounting member and the rotational shaft member and axially and rotationally fixed relative thereto; and second means for precluding axial movement of the means for providing frictional resistance, operably disposed on the rotational shaft member, and fixed against axial movement relative thereto, the means for providing frictional resistance being disposed axially between the first and second means, for precluding axial movement of the means for providing frictional resistance, such that the means for providing frictional resistance are substantially fixed against axial movement relative to the rotational shaft member.-7 The rotational friction hinge according to claim 2 wherein the substantially rigid, semi-elastic compression ring member comprises an annular member fabricated from a resilient plastics material.-8 The rotational friction hinge according to claim 1, wherein a bore is disposed in one of the first and second members, and the second mounting member is received in the bore, the bore and the second mounting member being cooperatively configured so as to key the second mounting member against rotation relative to the one of the first and second members with which it is operably associated.-9 The rotational friction hinge according to claim 8 wherein the bore in the one of the first and second members has a generally polygonal configuration.- 10 - The rotational friction hinge according to claim 9 wherein the bore in the one of the first and second members has a generally hexagonal configuration.- 11 The rotational friction hinge according to claim 8 wherein the first mounting member has at least one aperture disposed therethrough and is attached to one of the first and second members by at least one fastener member extending through the at least one aperture into the one of the first and second members.- 12 - The rotational friction hinge according to claim 11 wherein the at least one fastener member is threaded.- 13 - The rotational friction hinge according to claim 2, further comprising: means for facilitating inserting receipt of the compression ring member onto the rotational shaft member, so as to preclude damage to the compression ring member during receipt of same by the rotational shaft member.- 14 The rotational friction hinge according to claim 13, wherein the means for facilitating inserting receipt of the compression ring member onto the rotational shaft member comprises: at least one conical surface circumferentially disposed upon the rotational shaft member.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US25439994A | 1994-06-06 | 1994-06-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9411914D0 GB9411914D0 (en) | 1994-08-03 |
| GB2290345A true GB2290345A (en) | 1995-12-20 |
Family
ID=22964161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9411914A Withdrawn GB2290345A (en) | 1994-06-06 | 1994-06-14 | Rotational friction hinge |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2290345A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2305690A (en) * | 1995-09-28 | 1997-04-16 | Hewlett Packard Co | Friction hinge for a laptop computer. |
| GB2324830A (en) * | 1997-04-30 | 1998-11-04 | Sharp Manufacturing Company Of | Friction hinge for wordprocessor or similar |
| WO2001006144A1 (en) * | 1999-07-16 | 2001-01-25 | Ing. Gerhard Dekorsy Gmbh | Device for braking mobile elements |
| US6249426B1 (en) * | 1999-08-30 | 2001-06-19 | Dell Usa Corp | Portable computer having a sealed hinge clutch |
| WO2008112031A1 (en) * | 2007-03-09 | 2008-09-18 | Sony Ericsson Mobile Communications Ab | Hinge boot and method of assembling hinge mechanisms |
| WO2016037538A1 (en) * | 2014-09-11 | 2016-03-17 | 杭州安费诺飞凤通信部品有限公司 | Portable electronic product clamshell hinge and portable electronic product |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB747986A (en) * | 1954-03-27 | 1956-04-18 | Autoyre Company | Improvements in or relating to hinge connections in swinging arm racks |
| GB1137247A (en) * | 1967-09-27 | 1968-12-18 | Code Designs | Improvements in or relating to pivot hinges |
| GB1341885A (en) * | 1971-04-20 | 1973-12-25 | Sundaw Products Ltd | Hinge joints |
| GB2009834A (en) * | 1977-12-07 | 1979-06-20 | Chromex Sa | Self-clamping rod fitting pivot assembly |
| GB2154192A (en) * | 1984-02-15 | 1985-09-04 | Wardle And Company Limited Ber | Sun visor mountings |
| US4639147A (en) * | 1984-08-13 | 1987-01-27 | Schwarz Edward L | Friction pivot assembly |
| US5178481A (en) * | 1987-03-25 | 1993-01-12 | Kabushiki Kaisha Toshiba | Shaft slide-locking apparatus |
-
1994
- 1994-06-14 GB GB9411914A patent/GB2290345A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB747986A (en) * | 1954-03-27 | 1956-04-18 | Autoyre Company | Improvements in or relating to hinge connections in swinging arm racks |
| GB1137247A (en) * | 1967-09-27 | 1968-12-18 | Code Designs | Improvements in or relating to pivot hinges |
| GB1341885A (en) * | 1971-04-20 | 1973-12-25 | Sundaw Products Ltd | Hinge joints |
| GB2009834A (en) * | 1977-12-07 | 1979-06-20 | Chromex Sa | Self-clamping rod fitting pivot assembly |
| GB2154192A (en) * | 1984-02-15 | 1985-09-04 | Wardle And Company Limited Ber | Sun visor mountings |
| US4639147A (en) * | 1984-08-13 | 1987-01-27 | Schwarz Edward L | Friction pivot assembly |
| US5178481A (en) * | 1987-03-25 | 1993-01-12 | Kabushiki Kaisha Toshiba | Shaft slide-locking apparatus |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2305690A (en) * | 1995-09-28 | 1997-04-16 | Hewlett Packard Co | Friction hinge for a laptop computer. |
| GB2305690B (en) * | 1995-09-28 | 1999-07-21 | Hewlett Packard Co | A friction hinge device |
| GB2324830A (en) * | 1997-04-30 | 1998-11-04 | Sharp Manufacturing Company Of | Friction hinge for wordprocessor or similar |
| WO2001006144A1 (en) * | 1999-07-16 | 2001-01-25 | Ing. Gerhard Dekorsy Gmbh | Device for braking mobile elements |
| US6249426B1 (en) * | 1999-08-30 | 2001-06-19 | Dell Usa Corp | Portable computer having a sealed hinge clutch |
| US6297946B2 (en) * | 1999-08-30 | 2001-10-02 | Dell Usa, L.P. | Portable computer having a sealed hinge clutch |
| US6304433B2 (en) * | 1999-08-30 | 2001-10-16 | Dell Usa, L.P. | Portable computer having a sealed hinge clutch |
| WO2008112031A1 (en) * | 2007-03-09 | 2008-09-18 | Sony Ericsson Mobile Communications Ab | Hinge boot and method of assembling hinge mechanisms |
| WO2016037538A1 (en) * | 2014-09-11 | 2016-03-17 | 杭州安费诺飞凤通信部品有限公司 | Portable electronic product clamshell hinge and portable electronic product |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9411914D0 (en) | 1994-08-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |