US3594852A - Pin hinge - Google Patents

Pin hinge Download PDF

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Publication number
US3594852A
US3594852A US680518A US3594852DA US3594852A US 3594852 A US3594852 A US 3594852A US 680518 A US680518 A US 680518A US 3594852D A US3594852D A US 3594852DA US 3594852 A US3594852 A US 3594852A
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US
United States
Prior art keywords
plate member
pivot axis
resilient arm
hinge
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.)
Expired - Lifetime
Application number
US680518A
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English (en)
Inventor
Alois Albin Krawagna
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westhem Corp Ltd
Original Assignee
Westhem Corp Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Westhem Corp Ltd filed Critical Westhem Corp Ltd
Application granted granted Critical
Publication of US3594852A publication Critical patent/US3594852A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
    • E05F1/1284—Mechanisms in the shape of hinges or pivots, operated by springs with a leaf or similar spring
    • 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
    • F16H—GEARING
    • F16H35/00—Gearings or mechanisms with other special functional features
    • F16H35/14—Mechanisms with only two stable positions, e.g. acting at definite angular positions

Definitions

  • ABSTRACT A snap hinge which includes a plate member ML CL Eosd 7/00 pivoted to a rigid member. Extending from the plate member 1 Field olsflldl 16/150 at a location spaced from the first pivot is a resilient arm the B; 220/31 end of which is integral through a flexible web with a connecting arm. The other end of the connecting arm is pivoted to the [56] References Cmd rigid member at a point spaced from the plate member pivot. UNITED STATES PATENTS Depending on the distance between the pivots, the snap hinge 3,289,877 12/ l 966 Wolf 16/150 has either one or two at-rest positions.
  • This invention relates to biased hinges, or snap-hinges" as they are sometimes called, in which the hinge tends to hold itself in either the closed position or the open position, or both positions.
  • the object of this invention is to provide a two-part, biased hinge in which the biasing structure is incorporated integrally into one of the two parts, the other of the two parts being merely a rigid member.
  • this invention provides a snap hinge comprising: a plate member having a first pivot, a resilient arm integral with said plate member and extending therefrom at a location spaced from said first pivot, the resilient arm tending to seek an unstressed position with respect to said plate member, a connecting arm integral through a flexible web with a portion of the resilient arm spaced from the plate member, said connecting arm having a second pivot remote from said flexible web, said web portion constituting a hinge axis which is, space d from said first pivot when said resilient arm is in said unstressed position.
  • FIG. 1 is a perspective view of one embodiment of this invention
  • FIGS. 2, 3, 4 and 5 are sectional views, taken at the line A-A of FIG. 1, showing sequential rotational positions of the first embodiment of this invention.
  • FIGS. 6, 7, 8 and 9 are sectional views, similar to FIGS. 2 to 5, of the second embodiment of this invention.
  • the first embodiment of this invention is seen to include a first part 10 and a second part 11.
  • the first part 10 consists of a plate member 12, which is shown to be substantially in the shape of a tuning fork, although any other suitable shape can be used.
  • the plate member 12 thus has two arms 14 and a base 16.
  • the plate member 12 has a first pivot 18 defined by two integral, aligned bosses 20, one projecting outwardly from either arm 14.
  • Integral with the plate member 12 and extending from the plate member between its two arms 14 is a resilient arm 22.
  • the resilient arm 22 extends from the plate member 12 at a location 23 spaced rightwardly from the pivot 18, and is constructed such that it tends to seek an unstressed position with respect to the plat member 12, this unstressed position being shown in dotted lines in FIG. 2.
  • the resilient arm 22 in its unstressed position forms an acute angle with hypothetical line extending between the pivot 18 and the location 23 at which the resilient arm extends from the plate member 12.
  • a connecting arm 25 is integral with the resilient arm 22 through a flexible web 26.
  • the flexible web 26 is remote from the location 23 at which the resilient arm 22 extends from the plate member 12, and constitutes a hinge axis between arms 22 and 25.
  • the connecting arm 25 has a pivot 28 at its end remote from the flexible web 26, and the pivot 28 is define by two cylindrical extensions 30, one projecting from either side of the connecting arm 25.
  • the second part of the hinge has been shown as a I single, rigid disc 32 having a central aperture 33 and a plurality of eccentric apertures 34 all equidistant from the central aperture 33.
  • the second part 11 actually consists of two such discs 32, but the nearer one has not been shown, in order to permit the structure of the first part 10 to be viewed.
  • the bosses 20 are adapted to enter the apertures 33 in the discs 32, and the cylindrical extensions 30 are adapted to lodge in particularones of the eccentric apertures 34 of thediscs 32.
  • the ends of the arms 14 have curved seating portions 36 which are adapted to rest against the extensions 30 and thereby provide a limit to the counterclockwise rotation of the plate member 12 about the pivot 18.
  • the limit-providing property of the curved portions 36 is best seen in FIG. 2.
  • the resilient arm 22 is pulling upwardly and rightwardly on the pivot 28 through the' medium of the connecting arm 25. This slight tension of the resilient arm 22 tends to maintain the plate member 12 in the FIG. 2 position, and can be said to bias the plate member 12 to the FIG. 2 position.
  • the first embodiment of this invention is one wherein the plate member 12 is adapted to be biased into two positions, the first one being that shown in FIGS. 1 and 2, the second position being that shown in FIG. 5, which is almost rotated from the position of FIG. 2.
  • the plate member 12 is pivoted to the discs 32 about the pivot 18, and downward pressure on the base 16 of the plate member 12 will begin to rotate the plate member in the clockwise direction about the pivot 18.
  • FIG. 3 shows the plate member 12 rotated approximately 60 clockwise from the position in FIG. 2. It will be noted that the resilient arm 22 is flexed further toward the pivot 18 in FIG. 3 than it is in FIG. 2.
  • the line 40 is the hypothetical line along which tension in the connecting arm 25 is directed. It will be noted that, in FIG. 2, the line 40 lies well away to one side of the pivot 18. As the plate member 12 reaches the FIG. 3 position, the hypothetical line 40 moves closer to the pivot 18, but still remains on the same side of the latter. Because the line 40 is still on the same side of the pivot 18, the effect of the spring action in the resilient arm 22 will remain one of biasing the plate member counterclockwise towards the FIG. 2 position. It will be noted however, that when the plate member 12 reaches the FIG. 4 position, the hypothetical line 40 is coincident with the pivot 18, and it is in this position that the biasing action of the resilient arm 22 is completely nullified. In effect, when the plate member 12 reaches the FIG.
  • the principal criterion which determines that the hinge will function in the way just described with reference to FIGS. 2 to 5 is that the discs 32 maintain the pivot 18 separated from the pivot 28 by a distance which is less than the distance between the pivot 28 and the web 26, i.e., the intcrpivot distance is less than the effective length of the connecting arm 25.
  • FIGS. 6 to 9 The operation of the hinge when the length of the connecting arm 25 is less then the distance between the pivots l8 and 28 is shown in FIGS. 6 to 9, and this constitutes the second embodiment of this invention.
  • the second embodiment is one which is only biased in one direction, and which never reaches the null point beyond which it is biased in the other direction.
  • the unstressed position for the resilient arm 22 is again shown in dotted lines
  • the plate member 12 is again adapted to pivot about the pivot 18
  • the connecting arm 25 (visibly shorter than the distance between the pivots l8 and 28) is again integral with the resilient arm 22 through a web portion 26, and tension in the connecting arm 25 is exerted along a hypothetical line 40.
  • the plate member 12 is always biased in the counterclockwise direction with respect to the discs 32, with a biasing effect which grows greater with every degree of clockwise rotation of the plate member 12, due to the increasing flexure of the arm 22.
  • the first and second embodiments of this invention can be compared in terms of moment arms by considering that the discs 32 are exerting a leftward force on the projections 30 along the hypothetical line 40, and that this leftward force along the line 40 is transmitted to the entire plate member through the resilient arm 22.
  • the moment arm at any given point is the product of the perpendicular distance from the pivot 18 to the line 40 and the force exerted by the connecting arm 25 on the discs 32.
  • the plate member reaches the FIG. 3 position, the force has increased due to the greater flexing of the arm 22, but the perpendicular distance from the pivot 18 to the line 40 has decreased, so that their produce may be greater or smaller than in FIG. 2.
  • FIG. 3 the force has increased due to the greater flexing of the arm 22, but the perpendicular distance from the pivot 18 to the line 40 has decreased, so that their produce may be greater or smaller than in FIG. 2.
  • an on-off switch in which the on" position can be selected from a number of radial positions around the discs 32.
  • the connecting arm 25 is forked in such a way that the projections 30 can be moved toward one another under pressure.
  • the outer ends of the projections 30 are made hemispherical, and the apertures 34, equally spaced from the aperture 33, are replaced by hemispherical depressions.
  • the projections 30 can be moved from any given pair of hemispherical depressions to the next adjacent pair of hemispherical depressions merely by applying pressure at the end of the base 16 of the plate member 12. For example, when the assembly is in the situation of FIG. 2, the projections 30 can be moved to the next counterclockwise pair of hemispherical depressions by exerting pressure upwardly on the rightward end of the base 16 of the plate member 12. When the plate member is in the FIG. position, the projections 30 can be moved to the next clockwise pair of hemispherical depressions by pushing upwardly on the outer (now leftward) end of the plate member 12.
  • the elements of the hinge as sembly herein disclosed do not need to be identical to those shown.
  • the discs 32 can be replaced by a single plate member having sockets into which the bosses and the pro'ections 30 can be received.
  • a snap-hinge comprising:
  • connecting arm being pivotally mounted ,to said rigid member at a location remote from said flexible web by a second pin-and-socket connection defining a second pivot axis
  • said web constituting a hinge axis which is spaced from said first pivot axis when said resilient arm is in said given position
  • the rigid member maintaining said first pivot axis separated from said second pivot axis by a distance which is less than the distance between said second pivot axis and said hinge axis.
  • a snap-hinge comprising:
  • connecting arm being pivotally mounted to said rigid member at a location remote from said flexible web by a second pin-and-socket connection defining a second pivot axis
  • said web constituting a hinge axis which is spaced from said first pivot axis when said resilient arm is in said given position
  • the rigid member maintaining said first pivot axis separated from said second pivot axis by a distance which is greater than the distance between said second pivot axis and said hinge axis.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Hinges (AREA)
  • Mechanisms For Operating Contacts (AREA)
US680518A 1967-11-03 1967-11-03 Pin hinge Expired - Lifetime US3594852A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68051867A 1967-11-03 1967-11-03

Publications (1)

Publication Number Publication Date
US3594852A true US3594852A (en) 1971-07-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US680518A Expired - Lifetime US3594852A (en) 1967-11-03 1967-11-03 Pin hinge

Country Status (8)

Country Link
US (1) US3594852A (de)
AT (1) AT280092B (de)
BE (1) BE723025A (de)
CH (1) CH479798A (de)
DE (1) DE1805267C3 (de)
FR (1) FR1590252A (de)
GB (1) GB1230215A (de)
NL (1) NL160064C (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5176463A (en) * 1987-07-30 1993-01-05 Trw United-Carr Gmbh & Co. Joint connection between two plastic parts
US5285556A (en) * 1992-12-14 1994-02-15 Shorin Joseph E Integral polymeric clamp
US5803549A (en) * 1997-06-06 1998-09-08 General Motors Corporation Self-locking forkbolt
US6022166A (en) * 1998-06-25 2000-02-08 Lear Corporation Self locking, rattle resistant fork bolt
US6215081B1 (en) 1998-08-31 2001-04-10 Brigham Young University Bistable compliant mechanism
US6757975B1 (en) 2001-01-25 2004-07-06 Brigham Young University Multi-layered compliant mechanisms and method of manufacture

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289877A (en) * 1963-03-20 1966-12-06 Westhem Corp Ltd Unitary hinge
GB1056999A (en) * 1964-12-09 1967-02-01 Initial Plastics Ltd Improvements in hinges of flexible plastics material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289877A (en) * 1963-03-20 1966-12-06 Westhem Corp Ltd Unitary hinge
GB1056999A (en) * 1964-12-09 1967-02-01 Initial Plastics Ltd Improvements in hinges of flexible plastics material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5176463A (en) * 1987-07-30 1993-01-05 Trw United-Carr Gmbh & Co. Joint connection between two plastic parts
US5285556A (en) * 1992-12-14 1994-02-15 Shorin Joseph E Integral polymeric clamp
US5803549A (en) * 1997-06-06 1998-09-08 General Motors Corporation Self-locking forkbolt
US6022166A (en) * 1998-06-25 2000-02-08 Lear Corporation Self locking, rattle resistant fork bolt
US6215081B1 (en) 1998-08-31 2001-04-10 Brigham Young University Bistable compliant mechanism
US6757975B1 (en) 2001-01-25 2004-07-06 Brigham Young University Multi-layered compliant mechanisms and method of manufacture

Also Published As

Publication number Publication date
DE1805267C3 (de) 1974-05-02
NL6814132A (de) 1969-05-06
NL160064C (nl) 1979-09-17
GB1230215A (de) 1971-04-28
FR1590252A (de) 1970-04-13
BE723025A (de) 1969-04-01
CH479798A (fr) 1969-10-15
DE1805267A1 (de) 1969-12-11
NL160064B (nl) 1979-04-17
DE1805267B2 (de) 1973-09-27
AT280092B (de) 1970-03-25

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