Frames

Abstract: A frame is formed from at least one frame member (28) and at least one connecting member (g). The connecting member (g) is directly coupled to the frame member (1) in a manner allowing relative angular rotation between them without disassembling the frame member (1) and/or the connecting member (g) from the frame as a whole. This relative rotation allows an article to be accommodated within the frame or to be removed therefrom.

Description: This invention relates to frames, for example for pictures, photographs, and the like. The prior art is replete with proposals for frames of this kind. For example, Japanese Patent Publication 26439/1964 proposes a frame comprising a plurality of elements connected by connecting members to form an enclosure. In the said Japanese Patent Publication 26439/1964 the connecting members have respective connection engaging pawls which engage with the frame elements. Each has an L-shaped portion in the form of a thin plate. To accommodate an article in the frame, the pawls must be operated and the frame elements demounted. Japanese Utility Model Publication 27391/1973 proposes connecting elements comprising flat plates folded perpendicularly to form arms with an inclined surface. A dove tail groove in a frame element is inserted into the connecting arm and screws tighten to wedge the elements together. With this construction insertion of articles into the frame or removal therefrom is a complicated procedure. In the disclosure of Japanese Utility Model Publication No: 24390/1975, frame members are formed in two halves angularly movable relative to each other to some extent but biased together by a spring. An article to be accommodated in the frame is held between the portions of the frame members by this spring bias. Japanese Utility Model Provisional Publication No: 161565/1988 is concerned with a spring bias frame system intended for use with record-jackets. A display frame is described in GB 1 574 142 having inner frame members bolted to corner plates, with outer frame members engaged with the inner frame members. The outer members must be removed to allow display material to be inserted in the frame. FR 2 076 339 discloses a frame wherein one frame member may be removed whilst supported on rods passing into the frame. Only then may the frame member be rotated to facilitate the insertion of display material. The frame of DE 88 06 432 comprises strip members joined by corner pieces with rotatable frontal members mounted on the strip members. A cover sheet is clamped against a support plate held by the strip members. Rotation of all the frontal members allows the cover sheet to be removed. In accordance with the present invention, there is provided a frame comprising a plurality of frame members which are generally longitudinal, and at least one corner connecting member, and characterised in the corner connecting member(s) being directly coupled to the frame members in a manner allowing relative angular rotation between the or at least one corner connecting member and at least one frame member without disassembling the frame member(s) and/or the corner connecting member(s) from the frame as a whole, to allow an article to be accommodated in the frame or to be removed therefrom. In preferred embodiments the frame member comprises an engaging section which engages with the front face of the article being accommodated and a side section. The frame member also has at least one partition dividing the space partially enclosed by the front-face engaging section and the side section into two distinct spaces. Of these, the first space is partially enclosed by the front-face engaging section and the partition and receives a peripheral edge of the article. The second space is partially enclosed by the partition and the side section and the connecting member is received in this second space. Suitably the side section has a flange at an edge opposite the front-face engaging section. This flange has a concave bearing surface extending inwardly of the side section towards the second space. The connecting member has a side plate having an edge with a correspondingly formed convex bearing section, thereby enabling the frame member to pivot relative to and over the connecting member. In preferred arrangements stop and/or location means serve to define fully open, fully closed and intermediate positions for the frame and connecting members. Additional springs may be provided to bias the members and/or to hold an article in place. In an alternative arrangement each frame member comprises a side section and an engaging section which extends from the side section and clamps against a surface of the article. The or each connecting member is formed with or is solid with a bottom wall which engages a surface of the article opposite the first surface, and the connecting member is also formed with or is solid with a side wall which lies alongside a side edge of the article. Additionally at least one frame member may be incapable of relative angular rotation relative to the connecting members. The invention is hereinafter more particularly described by way of example only with reference to the accompanying drawings in which:- Fig. 1 is a perspective view of part of a frame member in a first embodiment of frame constructed in accordance with the present invention; Fig. 2 is a perspective view of a connecting member adapted for use with the frame member of Fig. 1; Fig. 3 is an enlarged cross-sectional view illustrating cooperation between the frame member and connecting member of Figs. 1 and 2; Fig. 4 is a scrap sectional view of a modified embodiment; Fig. 5 is a cross-sectional view similar to that of Fig. 3 illustrating relative rotation of the members; Fig. 6 is a view similar to Fig. 5 for an alternative embodiment; Fig. 7 is a perspective rear view illustrating the coupling of two frame members to a single connecting member in one arrangement; Fig. 8 is an overall perspective view of an embodiment of frame constructed in accordance with the present invention; Fig. 9 is a cross-sectional view in an open position of a frame member and connecting member in one embodiment together with an edge of an article to be accommodated; Fig. 10 is a corresponding view of the frame in the closed position; Fig. 11 is a corresponding intermediate view; Fig. 12 is a partly cut away perspective view of a further embodiment of frame member for a frame in accordance with the present invention; Fig. 13 is a view similar to Fig. 9 for the embodiment of Fig. 12; Fig. 14 is a view corresponding to Fig. 10 for the embodiment of Fig. 12; Fig. 15 is a view similar to Fig. 9 for a yet further embodiment; Fig. 16 is a view similar to Fig. 10 for the embodiment of Fig. 15; Fig. 17 is a perspective exploded partial view of a frame member and cooperating connecting member of a yet further embodiment of frame in accordance with the present invention; Fig. 18 is a perspective view of a yet further embodiment of frame also in accordance with the present invention; Fig. 19 is a partially cut away perspective view of a finished frame utilizing the components illustrated in Fig. 18; Fig. 20 is a cross-sectional view corresponding to Fig. 9 of a yet further embodiment of frame also in accordance with the present invention; Fig. 21 is a cross-sectional view of a yet further embodiment also in accordance with the present invention; Fig. 22 is a perspective view of a connecting member of a yet further modified embodiment; Fig. 23 is a partially broken away perspective view illustrating a connecting member and one frame member of a yet further embodiment of frame also in accordance with the present invention; and Fig. 24 is a partially broken away and partially exploded view of a yet further embodiment of frame also in accordance with the present invention. In a first embodiment, a frame is composed of a plurality of frame members 1 (Fig.1) suitably extruded in aluminium or the like, and a plurality of connecting members 5 (Fig. 2) which may be moulded of a suitable resin such a polycarbonate, polyacetal, or the like. As can be seen from Figs. 1 and 3, the frame member 1 has a partition 11 extending from side section 20. Partition 11 is curved, and also serves to define two distinct spaces, namely a space A (see Fig. 1) partially enclosed by side section 20 and partition 11 and in which is received (see Fig. 3) the connecting member 5, and a space B (see Fig. 1) partially enclosed by a section 12 of the frame member extending longitudinally thereof along an edge of the side plate 20 and the side plate itself. As will be explained below with reference to Figs. 9 et seq. , the space B serves to receive a peripheral edge of an article to be mounted in the frame. The distal end of partition 11 is provided with a lug or other location means 13 which cooperates with the connecting member as explained in more detail below. A rib 14 extends into the space A from side section 20 and serves to support or engage side plate 51 of the connecting member 5. Side section 20 is also provided with a flange 15 having a concave bearing surface 15a, which flange extends inwardly of the side section towards the space A . The flange 15 is connected to side section 20 via a stepped portion 19 (best shown in Fig. 7). A shoulder portion 16 is provided adjacent concave bearing section 15a and assists in maintaining a corresponding convex bearing section 51a of connecting member 5 in engagement with the concave bearing section 15a of frame member 1. Figs. 1 and 2 also illustrate an arrangement for keying the frame member and the connecting member together to prevent relative longitudinal axial sliding. Thus, Fig. 1 shows a projection 17 into the space A which engages with a corresponding groove or slot 55 provided in the connecting member 5 (Fig. 2). Connecting element 5 includes the side plate 51 which serves as a leaf spring when the frame member and connecting member are inter-engaged. Stop 53 engages with lug 13 of the frame member to define a relatively fully open position for the frame member and connecting member (see Fig. 5). Surfaces 54a and 54b, which are interrupted by a groove 54 which serves as a location means, are generally convex and the corresponding surface of the partition 11 is generally concave, the surfaces being generally concentric about the pivot of the bearing surfaces 15a and 51a. As the frame member and connecting member rotate angularly relative to each other, lug 13 slides across surfaces 54a and 54b. Connecting member 5 is provided with a further location means in the form of surface 52 which defines the closed position of the frame member and connecting member. The location means 52 is integral with a reinforcing plate 50 which in the embodiment of Fig. 2 is generally triangular and interconnects two portions of the connecting member angularly related to each other and serving to define a corner of the finished frame. The third edge of the triangular reinforcing plate 50 has an upturned edge 56 which, as will be explained below with reference to Fig. 9, serves for support of an article to be accommodated in the frame. A through bore 57 in the reinforcing plate serves for fixing of the frame to a wall. So that the respective side plates 51 of this corner connecting element can flex relative to each other and thereby serve as leaf springs, a portion of these walls is cut away at 59. As can also be seen, particularly from Fig. 5, adjacent the locating surface 52 is a further surface 52a for receiving the lug 13, which surface, unlike surfaces 54a and 54b is not convexly curved. The connecting member shown in Fig. 3 is suitably provided with a tongue-like spring 152 having an inclined surface 152a at its forward end. As shown in Fig. 3, the tongue-like spring 152 inter-engages with lug 13 to locate the two parts. Fig. 4 shows an alternative arrangement in which the tongue-like spring 152 is provided with a pawl 152d engageable with the lug 13. To inter-engage the parts, lug 13 is received between pawl 152d and an adjacent wall 152h serving as a location means and pushed into place between the two. Fig. 6 shows a modified embodiment in which side plate 51 has a relatively angled configuration. The portion 5t engages lug 13 when the frame member is in the open position, and inner surface 1t when it is in the closed position. As can be seen in Fig. 8 the respective frame members are mitred at the corners P1, P2, P3 and P4 to form a neat and attractive finished appearance. The respective generally triangular reinforcing plates 50 in effect provide respective mounting means g1, g2, g3 and g4 which lie in substantially the same plane and allow the finished frame to be neatly mounted on a wall or other generally vertical surface. Fig. 8 shows two of the frame members in the closed position and two of the frame members in the relatively open position. We shall now explain below with more reference to Figs. 9 to 11 for one embodiment, Figs. 12 to 14 for a second embodiment and Figs. 15 and 16 for a third embodiment how an article is mounted in the frame. Fig. 9 shows a frame member and connecting member as illustrated in Figs. 1 and 2 in the fully open position. An article 3 to be mounted in the frame (for example a photograph) is placed between a generally rigid support 2 and a sheet of glass or other transparent material 4 and, as shown in Fig. 9, the support, article to be mounted and transparent sheet are located on the support wall 56 provided by the upturned edge of the reinforcing plate 50 and on the curved surface of the partition 11. As the frame member 1 is rotated relative to the connecting member effectively about a pivot 1a between the two through the position shown in Fig. 11 to the position shown in Fig. 10, the engaging section 12 of the frame member comes into engagement with the front face of the transparent sheet 4, thereby holding the sheet 4, the article 3 and the support 2 in position, the thickness of the support 2 being chosen appropriately. Referring again to Fig. 9, it will be seen that where the frame element can rotate through a substantial angle relative to the connecting member, the article 3 to be accommodated, with its support and transparent sheet can readily be slid into position laterally of the frame. Alternatively, if two or more frame members are moved to the open position, the article to be accommodated can readily be inserted into the frame from the front. Various means are available to serve as stops for the angular movement of the frame member relative to the connecting member and for determining intermediate located positions. Thus, the bias provided in effect by the spring strength of the side plate 51 and the elasticity of the partition 11 may together effectively define a limiting position. The edge between the surface 52a (Fig. 5) and the curved surface of the partition 11 serves to prevent the lug 13 inadvertently rotating from the closed position of the frame member towards an open position, as the lug 13 first needs to be deliberately pushed over this edge. The inclined surface 152a of the tongue-like spring 152 in the embodiment of Fig. 3 achieves a similar effect. In the Fig. 4 arrangement there is additionally shown a cut out 152e which may mark the boundary between the movable portion of the tongue 152 and a part which does not move. The tongue may be extended in the arrangement of Fig. 4 beyond the pawl 152d to a manually operable catch 152f. By pressing against catch 152f, pawl 152d may be disengaged from lug 13. As the ends of the respective frame members are mitred to form the neat corner joint shown in Fig. 8, the flange 15 which is inboard of the outer surface of the frame member 1 must necessarily be cut away as shown at 18 in Fig. 7 so that the respective flanges do not interfere with each other as the frame members are rotated. As can be seen in both Figs. 5 and 6, where the spring force in the connecting member is significant, releasing of the frame member from the connecting member in the closed position and its rotation towards the open position additionally has the effect that the frame member as a whole is pushed outwardly. As a result the extent of the cut-out 18 is less than it might otherwise need to be if the parts at 1a were not pushed outwardly. Additionally, if the convex bearing section at the end of the said plate 51 is relatively thin as shown at 151a in Fig. 6 additionally providing a step therealongside, this also reduces the extent necessary for the cut-out 18 as the concave bearing section provided in effect by the flange does not need to be so great in extent and moreover, the step butts against the edge of the flange in the open position. Inclining the surfaces of the groove 55 in the connecting member (as shown in Fig. 22) or of the cooperating projection 17 has the affect of drawing the frame member into the corner of the connecting member as the frame member is moved to its closed position. By having the step 19 as shown in Fig. 7, the cut-out portions at the longitudinal ends of the flanges will not readily be visible when the frame is in its fully assembled condition and the frame is mounted on a wall or other vertical surface. The arrangement illustrated in Figs. 12 to 14 is adapted for accommodating the article 3 together with support 2 and a transparent sheet 4 which has an overall thickness which is not so great as that for example in the arrangement of Figs. 9 to 11. Moreover, the arrangement shown in Figs. 12 to 14 ensures a firm fixing for the article 3, support 2 and transparent sheet 4. A leaf spring 61a is mounted on partition 11 and biases these members against engaging section 12 of the frame member. Figs. 15 and 16 illustrate an alternative configuration of leaf spring 61 which is fixedly mounted both to the partition 11 and to the engaging section 12 and has a curved portion n which engages the rear face of the support 2 to bias support 2, article 3 and transparent sheet 4 against the engaging section 12. Figs. 2 and 3 show a further modification, namely a partial cut-out 51p in the edge of sideplate 51 positioned for the insertion of an element such as a screwdriver to lever the edge of the frame member away from the edge of the side plate 51 enabling the parts to be released from each other. Referring again to Fig. 8, the frame may be constructed in a manner in which only one frame member is rotatable on the connecting members. Thus, if a single length of frame member is formed with a V-shaped cut-out to provide surfaces which, when the frame member is bent at the apex of the V-shaped cut-out, provide the mitred surfaces, with the respective side sections 20 of the, now bent, frame member being continuous. This will, in effect, provide two sides of the frame, for example at the corner P1 of Fig. 8. If the same construction were followed at corner P2, this would leave three sides of the frame immovable on the respective connecting members g1, g2, g3 and g4, leaving only one frame member 1Q which would be rotatable relative to the connecting members g3 and g4. By this means, it may be possible to dispense altogether with two of the connecting members g1 and g2. Fig. 5 shows a further modification in which a projection 58 is formed on the connecting member 5 so that when the frame is mounted to a wall or other vertical surface, the pivot 1a stands proud of the wall enabling the frame member to be rotated relative to the connecting member to mount or replace the article 3 without the edge of the frame member (shown at 1a) coming into contact with the wall surface. Fig. 17 shows another modified embodiment in which the partition 11 is provided with a cut-out 117 and the connecting member is provided with a cooperating projection 155. Edge 117a of cut-out 117 is inclined for guiding the parts into position. The convex surface of the connecting member in this embodiment is provided with a tongue-like spring 352 with an inclined surface 352a engageable with the lug 13 on the distal edge of the partition 11. Figs. 18 to 20 illustrate an alternative embodiment in which at least one side of the frame is provided by a frame portion 201 which is immovable relative to the connecting member and in which ends, both of the frame members and of the frame portions, are cut perpendicularly to the longitudinal length of these members. Caps 121 are provided for the corners. As can best be seen in Figs. 18 and 20, connecting members for the frame portions have side plates 251 which serve as spring elements to firmly hold together the connecting member and the immovable frame portion 201. Frame portion 201 has through openings 217, in which are received projections 255 formed on side plate 251 of the connecting member. The embodiment illustrated in Fig. 21 is significantly different from the rotatable embodiments of frame member shown in other figures. In the previous figures, the spaces A and B defined by the partition 11 are separated by the partition in the thickness of the finished frame. In the embodiment of Fig. 21 these spaces are separated by a partition 311 in the plane of the finished frame. Thus, in the embodiment of Fig. 21, the side section 20 of the frame member is coupled to a plate 301 which faces forwardly when the finished frame is mounted on a surface and which terminates in an engaging section 12 which is adapted for clamping engagement against the surface of the transparent sheet 4. As can be seen in Fig. 21, the connecting member is solid with (though in an alternative embodiment it may be additionally formed with) a rear wall 305, which bears against the rear surface of the support 2, and also with a side wall 306 which lies alongside the side edges of support 2, article 3 and transparent sheet 4. Projection 317 engages the groove 55 in the connecting member. Fig. 22 illustrates one possible configuration for the inclined surfaces 55a for the sides of the groove 55 into which the projection 17 of the frame member of Fig. 1 may extend. Fig. 23 shows yet another embodiment, incorporating two independent additional features. Firstly, it will be seen that the connecting members are formed in one solid piece and in effect define a box. Additionally, and independently, pockets 252p are formed in the connecting members to receive leaf springs 252 having inclined surfaces 252a. These operate in a similar manner to leaf spring 152 and its inclined surface 152a. Fig. 24 shows anotther embodiment of the same kind as in Fig. 21 in which the spaces A and B are provided alongside each other generally in the plane of the frame. In the arrangement of Fig. 24 a plurality of holding projections 7 are provided on the connecting members which, in this embodiment, are again formed in one piece with a generally dish-shaped common rear plate 6. In the illustrated arrangement, lugs 13 are received in recesses provided between upstanding pawls 8 and the curved surface of the connecting member and finger openings 9 are provided in the rear plate 6 so that the frame member can be pushed from its inner side manually to open the frame member enabling the article 3 to be inserted into position.

Claims: A frame comprising a plurality of frame members (1) which are generally longitudinal, and at least one corner connecting member (5), and characterised in the corner connecting member(s) (5) being directly coupled to the frame members (1) in a manner allowing relative angular rotation between the or at least one corner connecting member (5) and at least one frame member (1) without disassembling the frame member(s) and/or the corner connecting member(s) from the frame as a whole, to allow an article to be accommodated in the frame or to be removed therefrom. A frame according to Claim 1, further characterised in that each said frame member comprises an engaging section adapted for operative engagement with the front face of said article, a side section, and at least one partition dividing the space partially enclosed by said front-face engaging section and said side section into two distinct spaces, namely a first space partially enclosed by said front-face engaging section and said partition and being adapted to receive a peripheral edge of said article, and a second space partially enclosed by said partition and said side section; and in that a portion of the or a said corner connecting member is received in said second space. A frame according to Claim 2, further characterised in that said side section has a flange at an edge thereof opposite said front-face engaging section, said flange having a concave bearing surface and extending inwardly of said side section towards said second space. A frame according to Claim 3, further characterised in that said corner connecting member has a side plate having an edge formed in a convex bearing section, and in that said convex bearing section is received in said concave bearing surface. A frame according to Claim 4, further characterised in that said side plate is shaped to form a leaf spring. A frame according to any of Claims 2 to 5, further characterised in that said corner connecting member has a convex bearing section and said partition has a concave section, said convex and concave sections being generally concentric. A frame according to Claim 6, further characterised in that one said section is provided with a stop adapted to define a fully open position for said frame member and corner connecting member to allow said article to be inserted or removed. A frame according to Claims 6 or 7, further characterised in that at least one of said sections is provided with location means adapted to define a partially open position for said frame member and corner connecting member to allow at least limited access to the interior of said frame for said article to be inserted or removed. A frame according to any of Claims 6, 7 or 8, further characterised in that at least one of said sections is provided with location means adapted to define a fully closed position for said frame member and corner connecting member. A frame according to Claim 4 or any claim appendant thereto, further characterised in that said side plate is profiled adjacent said convex bearing section to define a step adapted for abutting relation with said side section in a fully open position of said frame member and corner connecting member, allowing insertion of said article into said frame or removal therefrom. A frame according to Claim 3, further characterised in that said frame member has mitred end faces; in that there is a step between said flange and said side plate; and in that said flange terminates short of said mitred end faces. A frame according to Claim 9, further characterised in that a tongue-like spring is provided in said convex section; and in that said location means is formed at the forward edge of said tongue-like spring. A frame according to Claim 2 or any claim appendant thereto, further characterised in that a spring is located between said partition and said front-face engaging section, said spring being adapted to present a surface on which a said article to be accommodated may be placed in an open position of said frame member and corner connecting member, and being further adapted, in a fully closed position of said frame member and corner connecting member, to bias said article against said front-face engaging section. A frame according to Claim 1, further characterised in that each said frame member comprises a side section and an engaging section extending from said side section and adapted for clamping engagement against a surface of said article; and in that the or each said corner connecting member is formed with or is solid with a rear wall adapted for engagement with a surface of said article opposite said first mentioned surface, and is further formed with or is solid with a side wall adapted to lie alongside a side edge of said article mounted in said frame. A frame according to any preceding claim, further characterised in that at least one said frame member is incapable of angular rotation relative to said corresponding corner connecting member(s). A frame according to Claim 15, further characterised in that a cap or caps is/are mounted to end(s) of said frame member(s) to close interior space thereof at at least one corner of said frame. A frame according to any preceding claim, further characterised in that each said frame member and/or corner connecting member(s) comprises a longitudinal extrusion, and in that said frame members and said corner connecting member(s) are keyed to prevent relative longitudinal axial sliding. A frame according to Claim 17, further characterised in that the or each said corner connecting member is provided with a slot or groove serving to provide keying with said frame member, said slot having angled sides. A frame according to any preceding claim, further characterised in that said frame members serve to define sides of said frame; in that the or each said corner connecting member includes location means serving to define a fully closed position for frame members relative thereto; and in that the or each corner connecting member comprises a reinforcing plate integral with said location means at a corner of said frame.

Inventors: KOMAMURA TAKEO, KOMAMURA, TAKEO
Applicants: KOMAMURA TAKEO, KOMAMURA, TAKEO
Application year: 1990
Main classification: A47G1
IPC codes: E04F19, E06B3, F16B21, A47G1, F16C11, G09F15, E04F13