Adjustable hinge assembly

Abstract

A hinge for mounting a door-panel or window sash to a frame. The hinge includes first and second hinge parts connected by a stud-pin for rotatability. The first hinge part has outer hinge knuckles with bores having axially outer threaded sections and axially inner anti-rotation sections. The stud-pin includes a cylindrical pin section that is received in the central hinge knuckle of the second hinge part and a guide bushing in one outer hinge knuckle, and a head section that is received in the outer hinge knuckle. A grub screw is threaded into the threaded section behind the head section, wand adjusting a position of the grub screw axially adjusts a position of the head section to adjust a position of the first hinge part relative to the second hinge part via an axially inner part of the head section contacting a facing end of the central hinge knuckle.

Description

TECHNICAL FIELD

[0001] The present invention relates to a door or window hinge assembly, and more particularly to a hinge assembly used for a door or window which allows for adjustments in 3 directions.BACKGROUND

[0002] Window sashes or doors normally have a frame surrounding the sash or door panel with a jamb in which the window sash or door fits. The frames of the window sashes and doors, as well as the frames that surround them may be made of various materials, such as wood, aluminium or plastics.

[0003] In most instances, it is desirable to form the parts that connect the hinge to be fastened to the door panel or window sash so that they are visible only as little as possible at the hinge knuckle where the hinge parts pivot relative to one another. This is typically accomplished with a recessed assembly of the hinge parts except for the hinge knuckle into the door panel or window sash as well as the surrounding frame. The hinge must allow for adjustment in all 3 directions in a simple and convenient manner such that a precise side-to-side and up-and-down alignment of the door panel or sash parallel to the corresponding frame can be achieved for proper positioning as well as an in-and-out adjustment for proper sealing. Further, the arrangement must provide for security so that a door or window lock on an interior of a building is not circumvented by merely removing hinge pins form the hinges.

[0004] DE 10 2007 028 218 B3 discloses a hinge that offers a plurality of adjustment options in different directions. To allow an adjustment of the hinge perpendicular to the plate-like portion and perpendicular to the hinge axis, an adjusting screw is provided, the screw head of which is arranged between the plate-like portion and an intermediate piece, which in turn is connected to a retaining piece. In order to hold the plate-like portion and the intermediate piece together, screws are provided which pass through holes in the plate-like portion and are screwed into threads of the intermediate piece or into threaded sleeves formed on the intermediate piece.

[0005] DE 20 2014 100 431 U1 discloses a hinge having upper and lower hinge barrels that are separately mountable to a frame, and a central hinge barrel that can be attached to a sash or other movable part. The central hinge barrel is adjustably mounted to the part that is anchored to the sash or other movable part.

[0006] US 8,413,299 discloses one known arrangement for a hinge for doors and windows that is particularly adapted for plastic doors and windows. However, there are certain drawbacks to this known hinge related to the safety features to prevent unauthorized disassembly of the hinge.

[0007] US 10,246,918 discloses an adjustable hinge by the Applicant. Here, a retaining piece that is insertable into a groove of a door or a window, is part of a first hinge part that has a plate-like portion, an intermediate piece, and a retaining part and a plurality of mounting and adjusting elements therebetween.

[0008] It would be desirable to provide hinge of the above-noted type that provides enhanced stability and adjustment features in a reduced space envelope, and that is also suitable for left- or right-opening hinge installations without the need for additional parts.SUMMARY

[0009] A hinge assembly for mounting a door-panel or window sash to a frame is provided that addresses the issues noted above.

[0010] In one embodiment, the hinge assembly includes a first hinge part adapted to be mounted to one of the frame or the door or window sash, and a second hinge part adapted to be mounted to the other of the frame or the door or window sash. The first hinge part is operatively connected to the second hinge part by a stud-pin so as to be rotatable relative to one another about a common hinge axis. The first hinge part has a first attachment part on which two outer hinge knuckles are mounted, and the second hinge part has a second attachment part and a knuckle support part on which a central hinge knuckle is located. The central hinge knuckle is adapted to be located between the two outer hinge knuckles, and the knuckle support part is adjustably mounted in the second attachment part. The outer hinge knuckles each include a bore, and the bore in at least one of the outer hinge knuckles includes an axially outer threaded section and an axially inner anti-rotation section. A guide bushing is inserted from an axially inner end into the bore in one of the outer hinge knuckles, with the guide bushing including: a) a guide body having an outer surface that is received in the bore of the outer hinge knuckle, b) a guide bore for guiding an end of the stud-pin, and c) a flange that contacts the axially inner end of said outer hinge knuckle. The stud-pin includes: a) a cylindrical pin section that is received in the central hinge knuckle and the guide bushing, and b) a head section that is received in the bore of the other of the outer hinge knuckles from the outer hinge knuckle in which the guide bushing is located. The other of the outer hinge knuckles includes the axially outer threaded section and the axially inner anti-rotation section, and the head section of the stud-pin is received therein with an axially slidable, non-rotatable engagement. A grub screw that is received in the axially outer threaded section of the outer hinge knuckles behind the head section, wherein adjusting a position of the grub screw axially adjusts a position of the head section in the other of the outer hinge knuckles to axially adjust a position of the first hinge part relative to the second hinge part via an axially inner part of the head section contacting a facing end of the central hinge knuckle.

[0011] In one preferred embodiment, the head section of the stud-pin includes a plurality of part-cylindrical surface portions that define a diameter that is sized to be slidably received in the bore of the other of the outer hinge knuckles, and a plurality of axially extending, inwardly offset surfaces from the diameter that are spaced apart circumferentially from one another. Each of the inwardly offset surfaces is located between circumferentially adjacent ones of the part-cylindrical surface portions. The axially inner anti-rotation section of the other of the outer hinge knuckles includes complementary axially extending surfaces to the inwardly offset surfaces in order to rotationally fix the stud-pin in position while allowing for axially sliding movement.

[0012] In a preferred arrangement, the diameter of the part-cylindrical surface portions is less than or equal to an inside diameter of the axially outer threaded section.

[0013] In one preferred arrangement, there are six of the inwardly offset surfaces that are arranged in a hexagonal arrangement. However, more of less of the inwardly offset surfaces could be provided, for example between 4 and 10.

[0014] In one preferred arrangement, axially extending locking recesses are provided that are axially aligned with the inwardly offset surfaces and extend radially inwardly into the head section. In this arrangement, the hinge assembly preferably includes a locking screw opening that extends through the other of the outer hinge knuckles at the anti-rotation section, and a locking screw extends through the locking screw opening and into one of the axially extending locking recesses to prevent removal of the stud-pin.

[0015] Preferably, with the hinge assembly in a closed position, the second hinge part and / or frame or door or window sash attached to it, at least partially blocks access to the locking screw.

[0016] In a particularly preferred embodiment, the bore in both of the outer hinge knuckles includes the axially outer threaded section and the axially inner anti-rotation section, and the outer surface of the guide body is received in said outer hinge knuckle with a non-rotatable engagement. With this arrangement, for first hinge parts where the first attachment part is arranged with an offset rather than extending radially from the hinge axis, which would typically require different parts for left-opening and right-opening applications, the first hinge part can instead be vertically flipped since the outer hinge knuckles have the same configuration. This way the then uppermost one of the outer hinge knuckles in an installed position receives the stud-pin and a lowermost one of the outer hinge knuckles in the installed position receives the guide bushing.

[0017] In one preferred arrangement, the knuckle support part of the second hinge part is adjustably mounted in the second attachment part via upper and lower gasket pressure adjustment eccentrics and by upper and lower side adjustment screws. These may be arranged in a similar manner to the arrangement in US 10,246,918, which is incorporated herein by reference as if fully set forth. However, other adjustable attachment means can be provided for adjusting the in / out pressure between the door or window sash and the frame, as well as tilt, so that in combination with the axial adjustment provided in the direction of the hinge axis by the arrangement noted above, a 3-dimensional adjustment of the first hinge part relative to the second hinge part is provided.

[0018] In a preferred application, the second attachment part is adapted to be inserted in a pocket opening in the other of the frame or the door or window sash, and the upper and lower gasket pressure adjustment eccentrics and the upper and lower side adjustment screws are arranged on a side of the second attachment part and are adapted to be accessed via side openings in the other of the frame or the door or window sash.

[0019] In a preferred arrangement, a cover for the upper and lower gasket pressure adjustment eccentrics and the upper and lower side adjustment screws is provided that is adapted to be connected to the side openings.

[0020] In preferred window sash and dour mounting applications, the first hinge part adapted to be mounted to the door or window sash. A cover plate can optionally be provided for aesthetics. Here, the second hinge part is adapted to be mounted to the frame. Preferably, the pocket opening is machined into the frame, as well as the side openings for access to the and the upper and lower gasket pressure adjustment eccentrics and the upper and lower side adjustment screws.

[0021] In one preferred arrangement, the guide pushing is made of plastic material, and may be a molded part which can be made from a polyamide or any other suitable polymeric material. Alternatively, it could be a machined part made of metal, for example brass.

[0022] In one preferred arrangement, the cylindrical pin section of the stud-pin is made of metal, and the head section is made of plastic material. The plastic material can be over-molded onto the pin section. The head section can be a polyamide or any other suitable polymeric material. Alternatively, the stud-pin could be a machined part formed of metal.

[0023] The features noted above made be used individually or in various combinations within the scope of the present disclosure.BRIEF DESCRIPTION OF THE DRAWING(S)

[0024] The foregoing summary as well as the following detailed description will be best understood when read in conjunction with the appended drawings. In the drawings: Figure 1 is an elevational view showing an assembled hinge assembly in accordance with the present disclosure that is mounted between a door or window sash and a frame. Figure 2 is a top view of the hinge assembly shown in Figure 1 in position, mounted between a door or a window sash and a frame. Figure 3 is a view similar to Figure 1 showing removal of decorative covers from the hinge knuckles of the hinge assembly of Figure 1. Figure 4 is an elevational view showing the second hinge part of the hinge assembly of Figure 1 in an installed position on a door or window sash or a frame. Figure 5 is a perspective view similar to Figure 4 in which the second part of the hinge assembly has been removed from the door or window sash or frame showing the pocket opening in which the second part of the hinge assembly is installed as well as a cover used to cover the openings for the adjustment eccentrics and adjustment screws of the second hinge part. Figure 6 is a view showing the first hinge part mounted to one of the door or window sash or the frame, with a decorative cover over the first attachment part. Figure 7 is a view similar to Figure 6 showing the first hinge part mounted on the door or window sash or the frame, without the decorative cover shown in Figure 6. Figure 8 is a side view of the second hinge part shown in the mounted position in the door or window sash or frame with the adjustment eccentrics or adjustment screws visible through openings in the door or window part or the frame. Figure 9 is an exploded view showing the second hinge part prior to being assembled in the pocket opening in the door or window sash or frame. Figure 10 is a side view showing the second hinge part in detail. Figure 11 is a detail side view showing the first hinge part which includes the outer hinge knuckles connected to a first attachment part as well as a guide bushing in a position prior to insertion in one of the outer hinge knuckles. Figure 12 is a bottom view of the guide bushing shown in Figure 11. Figure 13 is an enlarged detail view showing the guide bushing installed in one of the outer hinge knuckles, in a lower-most position in an installed position of the hinge assembly. Figure 14 is a perspective view, partially exploded, showing assembly of a stud-pin into the aligned first and second hinge parts as well as a grub screw used for adjustment of the first hinge part relative to the second hinge part in a direction of the hinge axis. Figure 15 is an enlarged view showing the head section of the stud-pin in the upper one of the outer hinge knuckles contacting a facing end of the central hinge knuckle. Figure 16 is an enlarged perspective view showing one of the outer hinge knuckles. Figure 17 is a view looking down into the bore of the outer hinge knuckle shown in Figure 16. Figure 18 is an enlarged detail view showing the stud-pin in position for insertion into one of the outer hinge knuckles. Figure 19 is an enlarged top view showing the head section of the stud-pin in the installed position in the outer hinge knuckle prior to installation of the grub screw. Figure 20 is a bottom view of the outer hinge knuckle in which the head pin has been installed showing the anti-rotation section of the head section of the stud-pin engaged with the corresponding axially inner anti-rotation section of the outer hinge knuckle. Figure 21 is an enlarged detail top view of the head section of the stud-pin. Figure 22 is an enlarged perspective view showing the grub screw positioned above the head section of the stud-pin prior to installation. Figure 23 is an enlarged detail view showing the upper section of the assembled hinge assembly with the locking screw being inserted through the locking screw opening in the upper one of the outer hinge knuckles. Figure 24 is a view similar to Figure 23 showing the upper section of the hinge assembly in a closed position with the second hinge part at least partially blocking access to the locking screw. Figure 25 is a cross-sectional view through the hinge assembly in the assembled state. Figure 26 is a cross-sectional view through the uppermost one of the outer hinge knuckles showing the locking screw in position engaged in one of the axially extending locking recesses. DETAILED DESCRIPTION

[0025] Certain terminology is used in the following description for convenience only and is not limiting. "Axially" refers to a direction along the axis of the hinge pin. "Axially inner" and "axially outer" refer to directions along the hinge axis, respectively toward or away from a center of the hinge assembly along the hinge axis. A "door or window sash" refers to either of these elements that is mounted via hinges in a corresponding frame. A reference to a list of items that are cited as "at least one of a, b, or c" (where a, b, and c represent the items being listed) means any single one of the items a, b, or c, or combinations thereof. The terminology includes the words specifically noted above, derivatives thereof and words of similar import.

[0026] Referring to Figures 1-26, hinge assembly 20 for mounting a door or window sash 10 to a frame 12 is shown. Figures 1-9, 14, and 15 shown the hinge assembly 20 in connection with the door or window sash 10 and the frame 12, while Figures 10-13 and 16-26 are detail views of the hinge assembly 20.

[0027] As shown in Figures 1-5 and 8-10, the hinge assembly 20 includes a first hinge part 30 that is adapted to be mounted to one of the frame 12 or the door or window sash 10. Preferably, as illustrated throughout the figures, the first hinge part 30 is mounted to the door or window sash 10. As shown in Figures 6 and 7, the first hinge part 30 has a first attachment part 31 on which two outer hinge knuckles 32, 33 are mounted. The first hinge part 30 can be attached to the door or window sash 10 via three screws installed in the holes, for example, shown in Figure 7. A decorative cover plate 24, as shown in Figure 6, can be installed over the first attachment part 31 once the first hinge part 30 is installed on the door or window sash 10. While the first preferred embodiment shows the first hinge part 30 mounted to the door or window sash 10, it could also be mounted to the frame 12.

[0028] Still with reference to Figures 1-8, a second hinge part 50 is adapted to be mounted to an other of the frame 12 or the door or window sash 10, and in the illustrated embodiment, is mounted to the frame 12. As shown in detail in Figures 14, 15, and 25, the first hinge part 30 is operatively connected to the second hinge part 50 by a stud-pin 60 so as to be rotatable relative to one another about a common hinge axis X.

[0029] As shown in detail in Figures 4 and 8-10, the second hinge part 50 has a second attachment part 51 and a knuckle support part 52 on which a central hinge knuckle 54 is located. The central hinge knuckle 54 is adapted to be located between the two outer hinge knuckles 32, 33 when the hinge assembly 20 is assembled (see Figures 14, 15, and 25), and the knuckle support part 52 is adjustably mounted in the second attachment part 51.

[0030] As shown in detail in Figures 1 and 2, covers 21, 22, 23 can be snapped or slid on to the outer hinge knuckles 32, 33 as well as the central hinge knuckle 54 for decorative purposes. However, these covers 21-23 are not required.

[0031] The knuckle support part 52 of the second hinge part 50 can be adjustably mounted in the second attachment part 51 via upper and lower gasket pressure adjustment eccentrics 55U, 55L, shown in Figures 8-10, with the adjustment eccentrics allowing the knuckle support part 52 to be tilted in or out at the top or bottom by turning the adjustment eccentric 55U and / or 55L. Further, the knuckle support part 52 is adjustably mounted in the second attachment part 51 via upper and lower side adjustment screws 56, 57. By turning the adjustment screws clockwise or counter clockwise, the knuckle support part 52 can be moved from side to side, as indicated in Figure 4, within the second attachment part 51. A fixing grub screw 58 is also provided to fix the knuckle support part 52 in position in the second attachment part 51 once the position is properly adjusted. The specific arrangement of the upper and lower gasket pressure adjustment eccentrics 55U, 55L, as well as the upper and lower side adjustment screws 56, 57 is similar to Applicant's disclosure in U.S. 10,246,918 although in the present case, the knuckle support part 52 is received in a recess 53 in the second attachment part 51 as illustrated.

[0032] As shown in detail in Figure 9, the second attachment part 51 is adapted to be inserted in a pocket opening 14 in the other of the frame 12 or the door or window sash 10, and in the illustrated embodiment in the frame 12, and the upper and lower gasket pressure adjustment eccentrics 55U, 55L, as well as the upper and lower side adjustment screws 56, 57, are arranged on a side of the attachment part 51 and are adapted to be accessed via side opening 16 in the other of the frame 12 or the door or window sash 10, and in the illustrated embodiment, the frame 12.

[0033] Further, as can be discerned from Figure 5, a decorative cover 25 can be provided for the upper and lower gasket pressure adjustment eccentrics 55U, 55L, and the upper and lower side adjustment screws 56, 57, that is adapted to be connected to the side opening 16. However, the cover 25 is optional.

[0034] Referring now to Figures 16, 17, and 25, the outer hinge knuckles 32, 33 each include a bore 34, 35, with the bore extending along the common hinge axis X, and the bore 34, 35 in at least one of the outer hinge knuckles 32, 33, and preferably in both of the outer hinge knuckles 32, 33, includes an axially outer threaded section 36, 37, and an axially inner anti-rotation section 38, 39.

[0035] As shown in Figures 11-13, a guide bushing 70 is provided and is inserted from an axially inner end into the bore 34, 35 in one of the outer hinge knuckles 32, 33. Preferably, the lower-most one of the outer hinge knuckles 32, 33, in the installed position receives the guide bushing 70. The guide bushing 70 includes: a) a guide body 72 having an outer surface 73 that is received in the bore 34, 35 of the one of the outer hinge knuckles 32, 33, and b) a guide bore 74 for guiding an end 61 of the stud-pin 60, and c) a flange 76 that prevents the guide body (72) from slipping through the bore ((34, 35)

[0036] Preferably, the outer surface 73 of the guide body 72 that is received in the bore 34, 35 of the one of the outer hinge knuckles 32, 33, further includes a plurality of partial cylindrical sections 77 and an axially inner anti-rotation section 78 so that it is received in said one of the outer hinge knuckles 32, 33, with a non-rotatable engagement. Optional axially extending recesses 79 can be provided similar to the locking recesses 67. However, for the guide bushing 70, the axially inner anti-rotation section 78 and locking recesses are optional.

[0037] In a preferred embodiment, the guide bushing 70 is made of a plastic material. Various materials can be used, such as a polyamide or any other suitable material.

[0038] As shown in Figures 14, 18-22, and 25, the stud-pin 60 includes: a) a cylindrical pin section 62 that is received in the central hinge knuckle 54 and the guide bushing 70, and b) a head section 64 that is received in the bore 34, 35, of the other of the outer hinge knuckles 32, 33 from the one of the outer hinge knuckles 32, 33 in which the guide bushing 70 is located. This other of the outer hinge knuckles 32, 33 must include the axially outer threaded section 36, 37, and the axially inner anti-rotation section 38, 39. The head section 64 of the stud-pin 60 is received therein with an axially slidable, non-rotatable engagement. In the installed position, the stud-pin 60 rests on the central hinge knuckle 54, and the outer hinge knuckles (32, 33) of the first hinge part (3) are adapted to slide up or down on the stud-pin (60) to provide adjustment in the direction of the hinge axis X.

[0039] As shown in detail in Figures 18-22, the head section 64 of the stud-pin 60 preferably includes a plurality of part-cylindrical surface portions 65 that define a diameter D that is sized to be slidably received in the bore 34, 35, of the other of the outer hinge knuckles 32, 33 from the outer hinge knuckle 32, 33 that receives the guide bushing 70. Additionally, a plurality of axially extending, inwardly offset surfaces 66 from the diameter D are provided that are spaced apart circumferentially from one another, with each of these inwardly offset surfaces 66 providing the anti-rotation feature and being located between circumferentially adjacent ones of the part-cylindrical surface portions 65. The diameter D of the part-cylindrical surface portions is less than or equal to an inside diameter ID of the axially outer threaded section 36, 37 and complementary part-cylindrical portions 40 of the bore 34,35. In the illustrated embodiment, there are six of the inwardly offset, anti-rotation surfaces 66 that are arranged in a hexagonal arrangement. Here, the corners of the hexagonal shape (indicated in broken lines in Figure 21) are removed so that the hexagonal shape fits within the circle defined by the diameter D. However, more or less of these inwardly offset, anti-rotation surfaces 66, could be provided in order to provide the anti-rotation section that prevents relative rotation between the stud-pin 60 and the outer hinge knuckle 32, 33, in which it is received. For example, preferably there are between 4 and 10 of these inwardly offset, anti-rotation surfaces 66.

[0040] As shown in detail in Figures 16 and 17 as well as in Figure 25, the axially inner anti-rotation section 38, 39 of the other of the outer hinge knuckles includes complementary axially extending surfaces 41 to the inwardly offset surfaces 66 in order to rotationally fix the stud-pin 60 in position while allowing for axially sliding movement in a direction of the hinge axis X. Here, the number of the axially extending surfaces 41 is preferably the same as the number of inwardly offset surfaces 66 arranged on the head section 64 of the stud-pin 60.

[0041] Additionally, as shown in detail in Figures 18,19, 21 and 22, the head section 64 of the stud-pin 60 preferably also includes axially extending locking recesses 67 that are axially aligned with the inwardly offset surfaces 66 and extend radially inwardly into the head section 64 as well as axially upwardly to a head end of the stud-pin 60. This leaves a lower portion of the head section 64 with the inwardly offset, anti-rotation surfaces 66.

[0042] In one preferred arrangement, as can be seen from Figures 16, 18, 23, 25, and 26, a locking screw opening 42 extends through the other of the outer hinge knuckles 32, 33, and preferably both of the outer hinge knuckles 32, 33, at the anti-rotation section 38, 39, and a locking screw 44 extends through the locking screw opening 42 and into one of these axially extending locking recesses 67 once the stud-pin 60 is installed to prevent removal of the stud-pin 60. The stud-pin 60 is inserted so that one of these locking sections 67 is aligned with the locking screw opening 42. Based on the elongated shape of the axially extending locking recesses 67, it is possible to adjust the stud-pin 60 up and down with the locking screw 44 in a partially installed position.

[0043] As shown in Figures 18, 25, and 26, preferably the upper most one of the outer hinge knuckles 32, 33 in an installed position receives the stud-pin 60.

[0044] As shown in detail in Figures 23 and 24, when the hinge assembly 20 is in the closed position, the second attachment part 51 at least partially blocks access to the locking screw 44. With the locking screw 44 in position, the stud-in pin 60 cannot be removed based on the axially extending locking recesses 67 not extending all the way to the bottom of the head section 64, providing positive locking for security purposes so that the stud-pin 60 could not be removed merely by removing the decorative covers 21, 22 and driving the stud-pin 60 out in order to gain access by removing a door or window sash 10 mounted using the hinge assembly 20.

[0045] As can be seen from comparing the guide bushing 70 shown in Figures 11 and 12 with the head section 64 of the stud-pin 60 as shown in Figures 18 and 19, the outer surface configuration can be the same. To the extent that both of the outer hinge knuckles 32, 33 include the axially outer threaded sections 36, 37 as well as the inner anti-rotation sections 38, 39, this allows the hinge assembly 20 to be used in right- and left-opening hinge installations using the same parts. This can be done by merely flipping the first hinge part over as would be understood by a person of ordinary skill in the art from the present disclosure.

[0046] As shown in Figures 14 and 22-26, a grub screw 80 is received in the axially outer threaded section 36, 37, of the other of the outer hinge knuckles 32, 33, behind the head section 64 of the stud-pin 60. Adjusting a position of the grub screw 80 axially based on its threaded engagement with the axially outer threaded section 36, 37, adjusts a position of the head section 64 in the other of the outer hinge knuckles 32, 33, to axially adjust the position of the first hinge part 30 relative to the second hinge part 50 via an axially inner part 68 of the head section 64 contacting a facing end 59 of the central hinge knuckle 54. Thus, as can be discerned from Figures 25 and 26, threading the grub screw 80 further inwardly within the outer hinge knuckle 33 would raise the first hinge part 30 along the direction of the hinge axis X relative to the second hinge part 50. Conversely, threading the grub screw 80 further outwardly in the direction of the hinge axis X would lower the first hinge part 30 along the direction of the axis X relative to the second hinge part 50.

[0047] Using this hinge assembly 20, 3-dimensional adjustments of the hinge 20 in order to adjust the position of the door or window sash 10 relative to the frame 12 are possible. Further, the hinge assembly 20 is adapted for right- or left-opening applications using the same hinge parts 30, 50, merely by reversing which of the outer hinge knuckles 32, 33 faces upwardly to the extent that both of the outer hinge knuckles 32, 33 are provided with the axially outer threaded sections 36, 37 and the axially inner anti-rotation sections 38, 39.

[0048] In the illustrated embodiment, the stud-pin 60 has the cylindrical pin section 62 made of metal, preferably steel, while the head section 64 is made of a plastic material. This can be, for example, a polyamide or any other suitable polymeric material. It would also be possible to form the stud-pin 60 in one piece of a single material, for example, by machining.

[0049] The central hinge knuckle 54 includes a bore that has a diameter that is complementary to the cylindrical pin section 62 of the stud-pin 60. Alternatively, a bushing can be provided in the central hinge knuckle 54 in order to be sized to the proper inner diameter.

[0050] Having thus described various embodiments of the hinge in detail, it is to be appreciated and will be apparent to those skilled in the art that many physical changes, only a few of which are exemplified in the detailed description above, could be made without altering the inventive concepts and principles embodied therein. The present embodiment is therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore to be embraced therein.

Claims

1. A hinge assembly (20) for mounting a door or window sash (10) to a frame (12), the hinge assembly (20) comprising: a first hinge part (30) adapted to be mounted to one of the frame (12) or the door or window sash (10); a second hinge part (50) adapted to be mounted to an other of the frame (12) or the door or window sash (10; the first hinge part (30) being operatively connected to the second hinge part (50) by a stud-pin (60) so as to be rotatable relative to one another about a common hinge axis (X); the first hinge part (30) has a first attachment part (31) on which two outer hinge knuckles (32, 33) are mounted; the second hinge part (50) has a second attachment part (51) and a knuckle support part (52) on which a central hinge knuckle (54) is located, the central hinge knuckle (54) is adapted to be located between the two outer hinge knuckles (32, 33), and the knuckle support part (52) is adjustably mounted in the second attachment part (51); the outer hinge knuckles (32, 33) each include a bore (34, 35), and the bore (34, 35) in at least one of the outer hinge knuckles (32, 33) includes an axially outer threaded section (36, 37) and an axially inner anti-rotation section (38, 39); a guide bushing (70) is inserted from an axially inner end into the bore (34, 35) in one of the outer hinge knuckles (32, 33), the guide bushing (70) including: a) a guide body (72) having an outer surface (73) that is received in the bore (34, 35) of the outer hinge knuckle (32, 33), b) a guide bore (74) for guiding an end (61) of the stud-pin (60), and c) a flange (76) that prevents the guide body (72) from slipping through the bore ((34, 35) the stud-pin (60) including; a) a cylindrical pin section (62) that is received in the central hinge knuckle (54) and the guide bushing (70), and b) a head section (64) that is received in the bore (34, 35) of an other of the outer hinge knuckles (32, 33) from the outer hinge knuckle (32, 33) in which the guide bushing (70) is located, said other of the outer hinge knuckles (32, 33) having the axially outer threaded section (36, 37) and the axially inner anti-rotation section (38, 39), and the head section (64) is received therein with an axially slidable, non-rotatable engagement; and a grub screw (80) that is received in the axially outer threaded section (36, 37) of the other of the outer hinge knuckles (32, 33) behind the head section (64), wherein adjusting a position of the grub screw (80) axially adjusts a position of the head section (64) in the other of the outer hinge knuckles (32, 33) to axially adjust a position of the first hinge part (30) relative to the second hinge part (50) via an axially inner part (68) of the head section (64) contacting a facing end (59) of the central hinge knuckle (54).

2. The hinge assembly (20) of claim 1, wherein the head section (64) of the stud-pin (60) includes a plurality of part-cylindrical surface portions (64) that define a diameter (D) that is sized to be slidably received in the bore (34, 35) of the other of the outer hinge knuckles (32, 33), and a plurality of axially extending, inwardly offset surfaces (66) from the diameter (D) that are spaced apart circumferentially from one another, with each of the inwardly offset surfaces (66) being located between circumferentially adjacent ones of the part-cylindrical surface portions (65), and the axially inner anti-rotation section (38, 39) of the other of the outer hinge knuckles (32, 33) includes complementary axially extending surfaces (41) to the inwardly offset surfaces (66) in order to rotationally fix the stud-pin (60) in position while allowing for axially sliding movement.

3. The hinge assembly (20) of claim 2, wherein the diameter (D) of the part-cylindrical surface portions 65 is less than or equal to an inside diameter (ID) of the axially outer threaded section (36, 37).

4. The hinge assembly (20) of claim 3, wherein there are six of the inwardly offset surfaces (66) that are arranged in a hexagonal arrangement.

5. The hinge assembly (20) of claim 2, further comprising axially extending locking recesses (67) that are axially aligned with the inwardly offset surfaces (66) and extend radially inwardly into the head section (64).

6. The hinge assembly (20) of claim 5, further comprising a locking screw opening (42) extending through the other of the outer hinge knuckles (32, 33) at the anti-rotation section (38, 39), and a locking screw (44) extends through the locking screw opening (42) and into one of the axially extending locking recesses (67) to prevent removal of the stud-pin (60).

7. The hinge assembly (20) of claim 6, wherein with the hinge assembly (20) in a closed position, the second hinge part (50) at least partially blocks access to the locking screw (44).

8. The hinge assembly (20) of claim 1, wherein the bore (34, 35) in both of the outer hinge knuckles (32, 33) includes the axially outer threaded section (36, 37) and the axially inner anti-rotation section (38, 39), and the outer surface (73) of the guide body (72) that is received in the bore (34, 35) of one of the outer hinge knuckles (32, 33) further includes an axially inner anti-rotation section (78) so that the guide bushing (70) is received in said outer hinge knuckle (32, 33) with a non-rotatable engagement.

9. The hinge assembly (20) of claim 8, wherein an uppermost one of the outer hinge knuckles (32, 33) in an installed position receives the stud-pin (60) and a lowermost one of the outer hinge knuckles (32, 33) in the installed position receives the guide bushing (70).

10. The hinge assembly (20) of claim 1, wherein the knuckle support part (52) is adjustably mounted in the second attachment part (51) via upper and lower gasket pressure adjustment eccentrics (54, 55) and by upper and lower side adjustment screws (56, 57).

11. The hinge assembly (20) of claim 10, wherein the second attachment part (51) is adapted to be inserted in a pocket opening (14) in the other of the frame (12) or the door or window sash (10), and the upper and lower gasket pressure adjustment eccentrics (54, 55) and the upper and lower side adjustment screws (56, 57) are arranged on a side of the second attachment part (52) and adapted to be accessed via side openings (16) in the other of the frame (12) or the door or window sash (10).

12. The hinge assembly (20) of claim 11, further comprising a cover (25) for the upper and lower gasket pressure adjustment eccentrics (54, 55) and the upper and lower side adjustment screws (56, 57) that is adapted to be connected to the side openings (16).

13. The hinge assembly (20) of claim 1, wherein the first hinge part (30) is adapted to be mounted to the door or window sash (10), and the second hinge part (50) is adapted to be mounted to the frame (12).

14. The hinge assembly (20) of claim 1, wherein the guide bushing (70) is made of plastic material.

15. The hinge assembly of claim 1, wherein the cylindrical pin section (64) of the stud-pin (60) is made of metal, and the head section (64) is made of plastic material.

16. The hinge assembly (20) of claim 1, wherein covers (21, 22, 23) can be snapped or slid on to the outer hinge knuckles (32, 33) as well as the central hinge knuckle (54) for decorative purposes.

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