GB2232705A

GB2232705A - Horizontally sliding sash windows

Info

Publication number: GB2232705A
Application number: GB9011758A
Authority: GB
Inventors: Tatsuhiko Ienaga
Original assignee: Fujisash Co Ltd
Current assignee: Fujisash Co Ltd
Priority date: 1989-06-13
Filing date: 1990-05-25
Publication date: 1990-12-19
Anticipated expiration: 2010-05-25
Also published as: DE4018388C2; GB2232705B; KR910001207A; FR2648174A1; KR940003269B1; DE4018388A1; FR2648174B1; JPH0317369A; GB9011758D0

Description

TITLE OF THE INVENTION

HORIZONTALLY SLIDING SINGLE-PLANE SASH WINDOW BACKGROUND OF THE INVENTION (Field of the Invention)

The present invention relates to a horizontally sliding single-plane sash window whose inner sash and outer sash are located in the same plane when the sash window is closed and which is opened by horizontally sliding the window sashes.

(Description of the Related Art)

Conventional horizontally sliding single-plane sash windows have been disclosed in, for example, Japanese Patent Publication No.37194/1987. In this sash window, inner and outer lower guide rails are provided on a sill parallel to each other in such a manner that they are aligned in a direction transverse to the plane of the sash window. An outer sash is received by a lower wheel which rolls along the -ing piece is outer lower guide rail. One end of a suppor-1,1. pivotally supported on a lower wheel which rolls along the inner lower guide rail, and the other end of the supporting piece is pivotally supported on an inner sash so as to allow the inner sash to be received by the lower wheel which rolls along the lower guide rail through the supporting piece.

In the above-described conventional sash window, the weight of both the inner and outer sashes is loaded on thee c> sill, so the depth of the window frame can not be reduced to that of the window frame ofa normal horizontally sliding sash. More specifically, the horizontally sliding sin'le-plane sash window is a horizontally sliding sash 9 window devised to attain the same appearance as that of a fixedly fitted sash window when it is closed, and the function of the horizontally sliding single-plane sash window increases as the depth of the window frame decreases. However, in a case where the weight of the inner and outer sashes is applied to the sill, the sill must be strong enough to receive the weight. At least, the depth of the window f rame mu st. be large enough to disperse the weight of the inner and outer sashes.

Furthermore, in the above-des=ibed conventional sliding single-plane sash window, since the rail for the inner sash is provided on the sill the lower guide rail for the outer sash, the the inner sash must be displaced inwardly when horizontally lower guide parallel to entirety of the window troublesome sash. SUMMARY OF THE INVENTION

An object of the present invention is to provide a horizontally sliding single-plane sash window in which the weight of an outer sash is applied to a sill while the weight of an inner sash is received by a head so as to allow the is opened, making the opening operation a task and preventing the use of a heavy inner Fig.

total weight of the window to be dispersed by the head and sill and hence allow the depth of the window frame to be reduced. Another object of the present invention is to provide a horizontally sliding single-plane sash window which can be opened without inwardly displacing the entiretly of an inner sash.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 shows an embodiment of a horizontally sliding single-plane sash window according to the present invention; Fig. 2 is a section taken along the line 1A - 1A of Fig. 1; Fig. 3 is a section taken along the line 1B 1B of Fig. 1; Fig. 4 is a section taken along the line 2A - 2A of 2; Fig. 5 is a section taken along the line 2B - 2B of Fig. 2; Fig. 6 is a section taken along the line 2C - 2C of Fig. 2; Fig. 7 is a section taken along the line 5A - 5A of Fig. 5; Fig. 8 is a section taken along the line 5B 5B of Fig. 5; Fig. 9 is a section taken along the line 5C - 5C of Fig. 5; Fig. 10 is a section taken along the line 5D - 5D of Fig. 5; Fig. 11 is a section taken along the line 5E - 5E of Fig. 5; Fig. 12 is a section taken along the line 1C - 1C of Fig. 1; Fig. 13 is an enlarged view of the essential parts of Fig. 12; Fig. 14 is a section taken along the line 12A - 12A of Fig.

12; Fig. 15 is a section taken along the line 1D - 1D of Fig. 1; Fig. 16 is a section taken along the line 15A - 15A of Fig. 15; Fig. 17 is a section taken along the line 15B - 15B of Fig. 15; Fig. 18 is a section taken along the line 1E - 1E of Fig. 1; -ion taken along the line 18A 18A of Fig. 19 is a sect Fig.

18; Fig. 20 is a section taken along the line 1F - 1F of Fig. 1; Fig. 21 is a section taken along the line 20A - 20A of Fig. 20; Fig. 22 is a section taken along the line 20B - 20B of Fig. 20; Fig. 23 is a section taken along the line 1G - 1G of Fig. 1; Fig. 24 is a section taken along the line 23A - 23A of Fig. 23; Fig. 25 is a section taken along the line 23B - 23B of Fig. 23; Fig. 26 is a section taken along the line 1H - 1H of Fig. 1; Fig. 27 is a section taken along the line 26A 26A of Fig. 26; Fig. 28 is a section taken along the line II II of Fig. 1; and Fig. 29 is a section taken along the line 28A 28A of Fig. 28. DETAILED DESCRIPTION OF THE INVENTION

An embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

A horizontally sliding sash window according to the present invention includes a window frame A, an outer sash B and an inner sash B ' (See Fig. 1. Since Fig. 1 shows the arrangement of the components of the sash window,. collazion of Fig. 1 with other drawings will be helpful). The w41.ndc,,%r frame A includes a head 1, a sill 2, and left and right jambs 3 and 31, as shown in Figs. 2 and 15. The window frame A has an opening R which is opened and closed by the sashes B and B 1.

The opening R of the window frame A is surrounded by an outer piece la of the head 1, an outer piece 2a of the sill 2, an outer piece 3a of the left jamb 3, and an outer piece 3'a of the right jamb 31. First mounting grooves 4, 41, 411 and 4111 are respectively provided on the inner sides of the forward ends of the outer pieces la, 2a, 3a and 31a in such a manner that they communicate with each other, and a first tightening material 5 is provided in these first mounting grooves 4, 41, 411 and 4111 in such a way that it surrounds the opening R. A forward end 51 of the first tightening material 5 protrudes inwardly from the first mounting grooves 4, 41, 411 and 4111.

As shown in Figs. 2, 5, 6, 16 and 20 receiving pieces lb, 2b, 3b and 3'b are respectively provided on the head 1, the sill 2 and the left and right jambs 3a and 3b near the outer pieces la, 2a, 3a and 3 1 a. The f orward ends of the receiving pieces lb, 2b, 3b and 31b are located closer to the outer periphery of the window frame A than the forward ends of the outer pieces la, 2a, 3a and 3 1 a. Second mounting grooves 6, 61, 61' and 6111 are respectively provided on the inner sides of the receiving pieces lb, 2b, 3b and 31b in such a manner that they communicate with each other, and a second tightening member 7 is provided in these second mounting grooves 6, 61, 61' and 6111. A forward end 71 of the second tightening member 7 protrudes inwardly from the second mounting grooves 6, 61 611 and 6111.

The outer sash B includes an upper rail 8, a low-er rail 9, meeting style 10, a style 101 and a glass panel 11 (See Figs. 2, 4, 23 and 26). The glass panel 11 is gripped by inner and outer tightening materials 12 and 121.

As shown in Figs. 2, 4 and 23, the upper rail 8, the lower rail 9 and the style 10 1 of the outer sash B are disposed such that the forward ends of outer pieces 8a, 9a and 101a of the upper rail 8, the lower rail 9 and the style 10 are respectively located closer to the outer periphery of the window frame A than the outer pieces la, 2a and 3a of the head 1, the sill 2 and the left jamb 3 when the sash window is closed. The outer surface of the meeting style 10 has a first shoulder 13a and a second shoulder 13b. The first shoulder 13a has a second mounting groove 6b, and a cent.ral second tightening material 14 is provided in the second mounting groove 6b in such a manner that a forward end 14' thereof protrudes inwardly. The central second tightening material 14 is located in the same plane as that in which the second tightening material 7 is positioned when t,-,e sash window is closed. A pair of L-shaped upper and lower intermediate receiving pieces 15 and 151 (Fig. 3) and a pair of upper and lower separation receiving pieces 16 and 161 (Fig. 2) are provided on the second shoulder 13b and a meeting style outer surface 13c extending between the second shoulder 13b and the inner end of the meeting style 10 in such a manner that they protrude toward the right jamb 3'.

A central third tightening material 17 is mounted on one end of the outer piece 10a of the meeting style 10 which is closer to the left jamb 3. A forward end 171 of the third tightening material 17 is brought into contact with the outer tightening material 12 of the outer sash B when the sash window is closed. The third tightening material 17 is located in the same plane as that in which the first tightening material 5 is located when the sash window is closed. A central first tightening material 18 is mounted on the other end of the outer piece 10a which protrudes from the first shoulder 13a toward the right jamb 3'. A forward end 181 of the first tightening material 18 is brought into contact with the outer tightening material 12 of the inner sash B' when the sash window is closed. The first tightening material 18 is located in the same plane as that in which the first tightening material 5 is located when the sash window is closed.

As shown in Fig. 14, block members 19 and 19' are mounted on the outer surface of the upper and lower ends of the meeting style 10, and first tightening materials 20 and 20' and second tightening materials 21 and 21' are respectively mounted on the block members 19 and 19'. The first tightening members 20 and 201 each extend between the ends of the central first tightening material 18 and the central third tightening material 17. The second tightening materials 21 and 211 are connected to the end of the central second tightening material 14. When the sash window is closed, the first tightening materials 20 and 201 are brought into contact with the first tightening material 5 while the second tightening materials 21 an 211 are brought into contact with the second tightening material 7 so as to hermetically seal the gap between the outer sash meeting style 10 and the head I and the sill 2.

In the outer sash B, an upper outer piece 8a' of the upper rail 8 is in engagement with an upper guide portion 22 constructed by the outer piece la and a receiving piece lb of the head 1, and a lower outer piece 9a' of the lower rail 9 is in engagement with a lower guide portion 221 constructed by the outer piece 2a and a receiving piece 2b of the lower rail 2. A lower wheel 23 provided on the inner side of' -..'-,.e lower rail 9 is placed on a guide rail 24 protruding from the sill 2 in such a manner that it can roll therealong, by whiclli the lower rail 9 is mounted on the window frame A. Central drawing pieces 25 and 251 for the outer sash B with right and left tapered edges are provided on the inner surface of the outer pieces 8a' and 9a' of the upper and lower rails 8 and 9 at the center in the horizontal direction of the sash window, and central receiving pieces 26 and 26' for the outer sash are provided on the receiving pieces lb and 2b at the center of the left half thereof symmetrically with respect to the drawing pieces 25 and 251 (Figs. 23, 24 and 25). The drawing pieces 25 and 251 are respectively brought into alignment-, with the receiving pieces 26 and 261 in a direction transverse to the plane of the sash window when the sash window is closed. Spacers 27, 27, 271 and 271 with right and left tapered edges, which have a configuration similar to that of the central drawing pieces 25 and 251, are provided on the outer surface of the outer pieces 8a' and 9a' at the two sides of the central drawing pieces 25 and 251 for the outer sash B.Protrusions 28 and 281 with which the spacers 27 and 271 are brought into contact are provided on the inner surface of the outer pieces la and lb of the head 1 and the which the is closed The rail 31, 11 1(Figs -ical direction. The sill 2 at the center thereof in the vert portions of the protrusions 28 and 28' which a--!-e closer to the left jamb 3 are notched to form notches 29 and 29' into spacers 27 and 271 are fitted when the sash window (Fig. 26 and 27).

inner sash BI includes an upper rail 30, a lower a meeting style 32, a style 321 and a glass panel 2, 15 and 20).The glass panel 111 is interposed between the inner and outer tightening materials 12 and 121, like the glass panel 11 of the outer sash B. As shown in Figs. 2 and 15, the upper rail 30, the lower rail 31 and the style 321 are disposed such that the forward ends of outer pieces 30a, 31a and 321 a of the upper rail 30, the lower rail 31 and the style 321 are located closer to the outer periphery of the window frame A than the outer pieces la, 2a and 31 of the head 1, the sill 2 and the right jamb 3' when the sash window is closed, as in the case of the outer sash B. The meeting style 32 is located within the width of the outer piece 10a of the meeting style 10 of the outer sash B when the sash window is closed.

A meeting side sash and an upper guide member rail 33 provided on the rail 30. A meeting side pulley 34, an outer sash pulley 35 36, which move along an upper guide head 1, are provided on the upper lower guide member 38 and an outer lower guide member 39, which move along lower guide groove 37 provided in the sill 2, are provided on the lower rail 31. As the sash pulleys 34 and 35 and the guide members 36, 38 and 39 are moved, the inner sash B' is moved and aligned with c:- the outer sash B when the sash window is opened, and is moved -o and located in the same plane as that of the outer sash B t close the opening R in cooperation with the outer sash B when the sash window is closed.

The upper guide rail 33 is constructed by horizontal pieces formed by bending the lower end of an inner piece lc and the lower end of an intermediate piece id interposed between the inner piece lc and the receiving piece 1b in opposed directions with a guide gap 40 formed therebetween, as shown in Figs. 6 and 15. The end portion of the horizontal piece of the intermediate piece ld and the end portion of the horizontal piece of the inner piece lc, which are closer to the right jamb 31, are notched to form a no tch 41, into which an upper auxiliary block 42 is fitted. The upper auxiliary block 42 is fixed to the head 1 by means of a screw 43 (Figs. 20 and 21). The auxiliary block 42 has a curved gap 44 one end of which is aligned with the guide gap and the other end of which is located adjacent to the outer piece la of the head 1.

More specifically, the upper guide rail 33 is disposed parallel to the upper guide portion 22 for the outer sash B on the inner side thereof. The guide gap 40 between the upper guide rails 33 and 33 communicate with the curved gap 44 formed in the upper auxiliary block 42. The sash pulleys 34 and 35 move along upper guide member 36 and the curved gap 44 The upper guide piece 2c of the sill adjacent to the inner the upper guide rails 33 and 33, the are in engagement with the guide gap -10 and move along the gaps 40 and 44. groove 37 is constructed by an inner 2 and an intermediate piece 2d located piece 2c, as shown in Figs. 6, 11 and 20. The lower guide groove 37 and the lower guide portion 221 for the outer sash B have the same positional relation as that between the upper guide rail 33 and the upper guide portion 22, so the lower guide groove 37 is disposed on the inner side of and parallel to the lower guide portion 221 for the outer sash B. The central portion of the intermediate piece 2d which forms the lower guide groove 37, i.e., the portion of the intermediate piece 2d, where the meeting rail of the outer sash B is aligned with the meeting rail 32 of the inner sash BI when the sash window is closed, is notched to form a notch 46 through which a first roller 38a of the meeting side lower guide member 38 enters and exits from a groove 45 formed by the intermediate piece 2d of the sill 2 and the guide rail 24 located on the outer side of the intermediate piece 2d (Figs. 6 and 11). As shown in Fig. 22, the end portion of the intermediate piece 2d and the end portion of the guide rail 24, which are located closer to the right jamb 3', are notched to form a notch 411 into which a lower auxiliary block 421 is fitted. The lower auxiliary block 421 is located substantially just below the upper auxiliary block 42-2, and is fitted to the sill 2 by means of a screw 431. One end c-L a curved groove 47 formed in the lcwer auxiliary block 42' is in alignment with the lower guide groove 37, and an open end of the curved groove 47 which is provided on the other end thereof is located adjacent to the receiving piece 2b of the sill 2 provided on the outer side of the guide rail 24. The open end 471 communicates with a drain hole 49 provided in the receiving piece 2b through a gap 48 between the lower auxiliary block 421 and the receiving piece 2b.

The meeting side lower guide member 38 and the outer lower guide member 39 move along the lower guide groove 37. The outer lower guide member 39 is disposed such that it enters and exits from the curved groove 47 which communicates with the lower guide grooves 37, as shown in Fig. 22.

The drain hole 49 communicates with the outdoor through a drain port 50 provided in the outer lower end of the sill 2 (Fig. 22).

The meeting side sash pulley 34 (Figs. 7, 8 and 9) has wheels 34a which roll along the upper guide rail 33. The wheels 34a are pivotaly supported on a main frame 52 through shafts 51. An upper drawing roller 53 which also serves as a locking device is pivotaly supported on one end of the main frame 52 which is closer to the meeting rail 312-1. The proximal end of a sash supporting piece 54 pivotaly supported on the intermediate portion of the main frame 52 through a shaft, 55. A coil spring 56 is provided between the shaft 55 and the upper drawing roller 53 so as to urge a first stopper 57 in a direction in which it is raised. A supporting piece 58 hangs from one end of the main frame 52 which is closer to the style 321 through the guide gap 40. A roller 59 is rotatably supported on the supporting piece 58. The roller 59 is in engagement with a first arcuate groove 60 provided in the intermediate portion of the sash supporting piece 54. A second stopper 62 hangs from the portion of the main frame 52 located between the supporting piece 58 and the shaft 55 into a second arcuate groove 62 provided adjacent to and on the side of the first arcuate groove 60 which is closer to the shaft 55.

A shaft pin 63 hangs from the forward end of the sash supporting piece 54, and a square cylindrical mediating frame 64 is loosely fitted on the shaft pin 63. The mediating frame 64 is fitted into a connecting block 65 fixed to the upper rail 30 of the inner sash B I in such a manner as to be -ical direction, and the forward end of an movable in the vert adjusting screw 66 which passes through the connecting block 65 is threadedly engaged with the mediating block 64.

In other words, the portion of the inner sash B' which is closer to the meeting style 32 is supported by the meeting side sash pulley 34 through the sash supporting piece 554.

When the sash window is to be closed, an upper end 571 of the first stopper 57 is brought into contact with a protruding edge 67 provided at the central portion of the head 1, i.e., provided immediately above the guide crap 40, and thereby falls against the urging force of the coil spring 56. When the sash window is to be opened, the first stopper 57 rises due to the urging of the coil spring 56. This brings a lower end 57" thereof into contact with the inner end surface of a proximal end 541 of the sash supporting piece 54, and thus restricts pivot of the sash supporting piece 54 about the shaft 55 in one direction (counterclockwise pivot as viewed in Fig. 9). Pivot of the sash supporting piece 54 in the opposite direction (clockwise direction as viewed in Fig. 9) is restircted by the contact of the second stopper 62 with a protrusion 68 provided on the outer end of the side wall of the second arcuate groove 61.

The gap between the upper rail 30 of the inner sash B' and the head 1 is adjusted by operating the adjusting screw 66. In Fig. 7, a reference numeral 69 denotes a lid plate.

The outer sash pulley 35 is disposed between the meeting side sash pulley 34 and the upper guide member 36 near the upper guide member 36. As shown in Figs. 18 and 19, the outer sash pulley 35 has wheels 35a which roll along the upper guide rail 33. The wheels 35a are pivotaly supported th on a main frame 71 t rough shafts 70. The main frame 71 has branched pieces 711 and 71' on which receiving rollers 72 are supported in such a manner as to be rotatable in a direction transverse to the plane of the sash window. A sash supporting frame 73 is provided on the upper surface of the upper rail 30 of the inner sash B'. The sash supporting frame 73 has a pair of opposed supporting pieces 731 and 731 which are directed toward the outdoor. The supporting pieces 731 and 731 are received by the receiving rollers 72 and 72 in such a manner as to be movable in the direction transverse to the plane of the sash window. In other words, the portion of the inner sash B' which is closer to the style 321 is received by the outer sash pulley 35 through the sash supporting frame 73 in such a manner as to be displacable in a direction transverse to the plane of the sash window.

As shown in Figs. 20 and 21, the upper guide member 36 includes an arm piece 74 whose proximal end is pivotaly mounted on the outer side of the inner sash B I, and rollers 36a and 36a rotatably supported on the forward end of the arm piece 74. Movement of the upper portion of the style 321 side of the inner sash B' between the jambs 3 and 3' is restricted by the movement of the rollers 36a and 36a of the upper guide member 36 along the guide gap 40 and the curved gap 44.

As shown in Figs. 6, 10 and 11, the meeting side lower guide member 38 has a mounting piece 75 which is fixed to the meeting rail 32 by means of screws 4311. The mounting piece 75 has a horizontal piece 751. The proximal end of an arm piece 76 which is bent substantially at its center is pivotaly supported on the horizontal piece 751, and the first roller 38a and a second roller 38b are rotatably supported on the forward end of the arm piece 76. The rollers 38a and 38b are in engagement with the lower guide groove 37. The first roller 38a moves into the groove 45 through the notch 46 and thereby permits the sashes B and B 1 to close the opening R when the sash window is closed.

Thus., movement of the lower portion of the meeting side of the inner sash B 1 is restricted by the meeting side lower guide member 38.

A reference numeral 77 denotes a receiving roller which receives the horizontal piece 751. The receiving roller 77 is rotatably supported on the sill 2 between the receiving piece 2b and the guide rail 24.

The outer lower guide member 39 is mainly shown in Fig.

22. The outer lower guide member 39 has the same configuration as that of the upper guide member 36, i.e., the outer lower guide member 39 has an arm piece 78 whose proximal end is pivotaly supported on the style 321 of the inner sash B' and rollers 39a and 39a rotatably supported on the forward end of the arm piece 78. The rollers 39a and 39a are in engagement with the lower guide groove 37. The lower portion of the style 321 side of the inner sash B 1 is guided along the lower guide groove 37 and the curved groove A7 which communicates with the lower guide groove 37 by means of the outer side guide member 39.

The meeting style 32 of the inner sash B', which is located within the horizontal length of the meeting style 10 of the outer sash B when the sash window is closed, hasa slit 79 substantially at a center thereof in the vertical direction. The slit 79 is closed by a frame 80 with an operation handle 81 thereon (Figs. 12 and 14).

A pinion 83 is provided on the forward end of a rotary shaft 82 of the operation handle 81, and upper and lower racks 84 and 841 which are in engagement with the pinion 83 are provided on base plates 84a and 84al. The base plates 84a and 84b 1 have notches 85 and 851 with which pieces 86a and 861 of upper and lower mediating pieces 86 and 861 are in engagement. The lower end of an upper vertically movable rod 87 and the upper end of a lower vertically movable rod 87' are respectively mounted on the upper mediating piece 86 and the lower mediating piece 861 (Fig. 14). An upper drawing member 88 is mounted on the upper end of the upper vertically movable rod 87, as shown in Figs. 5 and 7, and a lower drawing member 881 is mounted on the lower end of the lower vertically movable rod 871, as shown in Figs. 5 and 10. An up-per drawing piece 89 which is engaged with and disenziged from the upper drawing roller 53 to lock and unlock the sash window is provided on the upper end of the upper drawing member 88, and a lower drawing piece 891 which is engaged C= with and disengaged from the guide rail 24 of the sill 2 to lock and unlock the sash window is provided at the lower end of the lower drawing member 881.

An upper separating protrusion 90 which protrudes toward the tmeeting style 10 of the outer sash B is provided at the lower end of the upper drawing member 88 (Figs. 5 and 7), and a lower separating protrusion 901 which protrudes toward the meeting style 10, like the upper separating protrusion 90, is provided at the upper end of the lower drawing member 88' (Figs. 2, 5 and 10). As stated above, the upper.and lower separation receiving pieces 16 and 161, which are respectively brought into contact with the protrusions 90 and 901 when the sash window is closed, are provided on the inner surface 13c of the meeting rail 10 of the outer sash B. Upper and lower intermediate drawing rollers 91 and 91' are respectively provided on the intermediate portions of the upper and lower vertically movable rods 87 and 871 (Fig. 3.

In Fig. 3, only the lower intermediate drawing roller 911 is shown.). The upper and lower intermediate receiving pieces 15 and 151 which are brought into contact with the rollers 91 and 911, are provided on the of the meeting style 10, like 'the intermediate drawing inner surface 13c separation receiving pieces 16 and 161, as stated earlier. The intermediate drawing rollers 91 and 911 are respectively pressed against the intermediate receiving pieces 15 and 151. As stated above, the central second tightening material 14, which presses against the outer piece 32b of the meeting style 32 of the inner sash B' when the intermediate drawing rollers 91 and 911 are pressed against the intermediate receiving pieces 15 and 151, is provided on the first shoulder 13a of the meeting style 10 of the outer sash B (Fig. 2).

One end of an upper plate spring 92 (Fig. 7) is mounted on the upper portion of the upper drawing member 88. One end of a lower plate spring 921 (Fig. 10) is mounted on the lower portion of the lower drawing member 881. The other end of the upper plate spring 92 is mounted on the proximal end of an upper connecting piece 93, and the proximal end ofan upper horizontally movable upper rod 94 is mounted on the forward end of the upper connecting piece 93 (Fig. 15).

The upper horizontally movable rod 94 is in engagement with an upper horizontal guide groove 95a whose outer side wall is formed by the outer piece 30b of the inner sash upper rail 30 which is brought into contact with and separated from the second tightening member 7, like the upper vertically movable rod 87 (as the upper vertically movable rod 87 is in engagement with a vertical guide groove 95 provided in the meeting style 32) (Figs. 7, 15 and 16). An unDer intermediate drawing piece 96 is mounted on the forward end of the upper horizontally movable rod 94.

As shown in Figs. 15 and 16, the upper intermedia-ce drawing piece 96 has a rising piece 96a on the outer side thereof. The intermediate portion of the protruding portion 96a is notched to form a notch 98 through which an upper intermediate receiving piece 97 enters and exits. The upper intermediate receiving piece 97 hangs substantially from the

center of the half of the head 1 which is closer to the right jamb 31 and is located substantially below the intermediate piece ld (Fig. 15).

The other end of the lower plate spring 921 is mounted on the proximal end of a lower connecting piece 931, and the proximal end of a lower horizontally movable rod 941 is mounted on the lower connecting piece 931.

The lower horizontally movable rod 941 is in engagement with a lower horizontal guide groove 95b whose outer side wall is formed by the outer piece 31b of the lower rail 31 which is brought into contact with and separated from the second tightening material 7, just like the upper horizontally movable rod 94 is in engagement with the upper horizontal guide groove 95a (Figs. 10 and 15). A lower intermediate drawing piece 961 is provided of the lower horizontally movable rod 941.

The lower intermediate drawing substantially the same configuration as intermediate drawing piece 96, i.e., the drawing piece 961 has a hanging portion side thereof, as shown in Figs. 15 and 17.

at the forward end piece 961 has that of the upper lower intermediate 96 1 a on the outer The intermediate portion of the hanging portion 961a is notched to form a notch 981 through which a lower intermediate receiving piece 971 enters and exits.

The lower intermediate receiving piece 971 is provided at a position which is symmetrical with respect to the upper' intermediate receiving piece 97 in the vertical direction, i.e., the lower intermediate receiving piece 971 protrudes upwardly from the sill 2 near the receiving piece 2b of the sill 2 substantially at the,midpoint between the right jamb 31 of the sill 2 and the which is in a close state meeting style 10 of the outer sash B (Fig. 15).

A supporting piece 99 is provided on a surface 32e of the meeting style 32 of the inner sash B' which faces the meeting style 10 of the outer sash B at the midpoint in the vertical direction (Figs. 12 and 14). The supporting piece 99 has a pair of horizontal pieces 99a and 99a between which the proximal end of a restricting member 100 is in engagement so as to allow the restricting member 100 to be supported on the horizontal pieces 99a and 99a in such a manner as to be pivotal about a shaft 101.

The restricting member 100 has a central piece 100a and upper and lower restricting pieces 100b and 100bl provided above and below the central piece 100a. A protrusion 1001 is provided on the outer side of the central piece 100a in the vertical direction. The forward ends of therestricting -24pieces 100b and 100b 1 are supported by the supporting piece 99 in such a manner as to be pivotal about the shaft 101. The restricting member 100 is urged by a coil spring 102 wound around the shaft 101 clockwise as viewed in Fig. 12, i.e., in a direction in which the protrusion 1001 is separated from the surface 32e, so as to allow the restricting pieces 100b and 100bl to be located within the locus of the vertical movement of the upper and lower mediating pieces 86 and 861. An upper restriction receiving piece 103 which is engaged with the upper restricting piece 100b protrudes toward the meeting style 10 of the outer sash B from the lower end of the upper mediating piece 86, and a lower restriction receiving piece 1031 which is engaged with the lower restricting piece 100bl protrudes toward the meeting style 10 from the upper end of the lower mediating piece 861.

As shown in Fig.

provided between the inner pieces 3c and 3cl and auxiliary drawing 2, roller frames 104 are appropriately receiving pieces 3b and 31b and the of the left and right jambs 3 and 31, rollers 104a which press against the roller frames 104 are rotatably provided on the inner pieces 10 1 c and 32 1 c of the styles 10 1 and 321 of the inner and outer sashes B and By.

_A handle left jamb3 is provided on the inner surface of the in such a manner as to be pivotal in the direction of the right jamb 31. An arm piece 106 which is formed integrally with the handle 105 is brought into engagement with a groove 107 provided on the outer surface of the style 10 1 of the outer sash B when the sash window is closed. A pressing roller 108 is rotatably mounted -on the forward end of the arm piece 106 (Figs. 28 and 29).

The drain hole 49 is covered by a lid 109, as shown in Fig. 22.

Next, the operation of the components of the sash window will be described.

Figs. 9, 11, 18, 20 21, 22 and 27 show the sash window whose inner sash B' is fully or partially opened. At that time, as shown by the broken line in Figs. 12 and 14, the restricting member 100 is pivoted about the shaft 101 clockwise as viewed in Fig. 12 by the urging force of the coil spring 102. Thus, the upper restricting piece 100b of the restricting member 100 and the lower restricting piece 100bl are respectively in engagement with the upper restriction receiving piece 103 and the lower restriction receiving piece 1031, and upward movement of the vertically movable upper rod 87 mounted on the upper restriction receiving piece 103 through the upper mediating piece 86 and downward movement of the vertically movable lower rod 87' mounted on the lower restriction receiving piece 103' through the lower mediating piece 861 are thereby prevented. In other words, although the upper and lower mediating pieces 86 and 861 are connected to the pinion 83 through the upper and lower racks 84 and 841, the above-described restriction prevents erroneous operation of the operation handle 81.

At the same time, the lower end 5711 of the first stopper 57 is in engagement with the inner surface of the proximal end 541 of the sash supporting piece 54 while the second stopper 62 is in engagement with the protrusion 68, and pivot of the sash supporting piece 54 is thereby prevented. Hence, the side of the inner sash BI which is closer to the style 321 is separated from the outer sash pulley 35 by a fixed distance, like the side of the inner sash BI which is closer to the meeting style 32, and pivot of the arm piece 74 of the upper guide member 36, of the arm piece 76 of the meeting is side lower guide member 38 and of the arm piece 78 of the outer lower guide member 39 is restricted.

In this state, when the outer sash B along which the inner sash BI is to be made to slide is pushed toward the left jamb 3, the outer sash B moves toward the left jamb 3 by the rolling of the lower wheel 23 along the guide rail 24, and the inner piece 101c of the style 101 makes contact with the auxiliary drawing roller 104a provided on the left jamc 3. Also, the spacers 27 and 271 provided on the upper and lower outer pieces 8a' and 9a' partially come into alignment with the notches 29 and 29' in a direction transverse to the plane of the sash window while the central drawing pieces 25 and 251 provided on the outer pieces 8al and gal partially come into alignment with the central receiving pieces 26 and 261 in a direction transverse to the plane of the sash This state provided immediately before the sash closed is shown in Figs. 2, 4 and 23.

window.

window is When the inner sash B' is moved toward to right jamb 31, i.e., the inner sash B' is moved to close the sash window, after the above-described state shown in Figs. 2, 4 and 23 has been attained or concurrently with the movement of the outer sash B toward the left jamb 3, the wheels 34a of the meeting side sash pulley 34 and the wheels 35a of the outer sash pulley 35 travel along the upper guide rail 33 while the rollers 36a of the upper guide member 36 first move along the guide gap 40 and then advances into the curved gap 44. Also, the rollers 38a and 38b of the meeting side lower guide member 38 move along the lower guide groove 37 (with the first roller 38b reaching the notch 46, as shown in Fig. 11) while the rollers 39a of the outer lower guide member 39 first move along the lower guide groove 37 and then advance into the curved groove 47, and the inner piece 321c of the style 32' makes contact with the auxiliary drawing roller 104a, like the inner piece 101c of the style 10 of the outer sash B. This state in which the inner sash B' is disposed slantingly with respect to the window frame A is partially shown in Figs. 9 and 11.

At that time, the upper end 571 makes contact with the projecting edge 67, and the first stopper 57 thereby falls against the urging force of the coil spring 56 and is disengaged from the inner end surface of the proximal end 54' of the sash supporting piece 54, by which the sash supporting frame 73, i.e., the side of inner sash B' which is closer to the style 321, is made movable toward the outer sash pulley 35, and restriction of the movement of the arm pieces 74, 76 and 78 is released.

Next, when the operation handle 81 is pressed to press the meeting style 32 of the inner sash B' toward the outdoor, i.e., toward the meeting style 10 of the outer sash B, the first roller 38a of the meeting side lower guide member 38 passes through the notch 46 and enters the groove 45, and the style 32' of the inner sash B ' is almost located between the auxiliary drawing roller 104a and the receiving piece 31b of the right jamb 3', like the style 101 of the outer sash B. Also, the protrusion 1001 makes engagement with the inner end surface of the meeting style 10 of the outer sash B, by which the restricting member 100 is pivoted against the urging force of the coil spring 102, releasing the restriction of the upper and lower restriction receiving pieces 103 and 1031 by means of the upper and lower restricting pieces 100b and 100b' and making the operation handle 81 operable.

When the operation handle 81 is pivoted, the pinion 83 mounted on the rotary shaft 82 pivots,. by which the upper and lower racks 84 and 841 are moved in the vertical direction.

Upward movement of the upper rack 84 raises the vertically movable upper rod 87 through the upper mediatingpiece 86.

This in turn raises the upper drawing member 88 connected to the vertically movable upper rod 87 and brings the upper separating protrusion 90 provided on the upper drawing member 88 into contact with the upper separation receiving piece 16.

Downward movement of the lower rack 841 lowers the vertically movable lower rod 871 through the lower mediating piece 861.

This in turn lowers the lower drawing member 881 connected to the vertically movable lower rod 871 and brings the lower separating protrusion 901 provided on the lower drawing member 881 into contact with the lower separation receiving piece 16 1. As the upper and lower separating protrusion 90 and 901 are respectively brought into contact with the upper and lower separation receiving piece 16 and 16', the inner sash B' and the outer sash B are respectively pressed toward the right and left jambs 3' and 3, and the styles 10' and 32' of the inner and outer sashes B and B' are therebv inzerposed between the receiving pieces 3b and 3bl and the auxiliary roller 104, by which the side of the inner and outer sashes B and B' which are closer to the styles 10' and 321 are drawn toward the outdoor. Concurrently with this, the spacers 27 and 271of the upper and lower rails 8 and 9 of the outer sash B are brought into engagement with the notches 29 and 29' and the central drawing pieces 25 and 25' of the outer sash B are brought into alignment with the central receiving pieces 26 and 261 in a direction transverse to the plane of the sash window, by which the central portions of the upper and lower rails 8 and 9 of the outer sash B are drawn toward the outdoor. Also, the meeting rail 10 of the outer sash B is also drawn toward the outdoor as the upper and lower intermediate receiving pieces 15 and 151 are pressed against the upper and lower intermediate drawing rollers 91 and 91', which will be described later. As a result, the entiretly of the outer sash B is drawn toward the outer, and the outer tightening material 12 located on the outer pieces 8a, 9a and 101a of the upper rail 8, the lower rail 9 and the style 101 of the outer sash B thereby makes contact with the firs-lt, tightening material 5 while the first tightening materials 20 and 201 provided at the upper and lower ends of the meeting rail 10 make contact with the upper and lower frame portions of the first tightening mazerial 5. Also, the outer pieces 8b, 8b and 101b of the upper rail 8, the lower rail 9 and the style 101 make contact with the second tightening material 7 while the second tightening materials 21 and 21' provided on the upper and lower ends of the meeting style 10 make contact with the upper and lower frame portions of the second tightening material 7, thereby achieving double sealing of the gap between the outer sash B and the window frame A.

As the upper drawing member 88 is raised, the upper drawing piece 89 mounted on the drawing member 88 makes contact with the upper drawing roller 53, as shown in F igs. 5 and 7. As the lower drawing piece 881 is lowered, the lower drawing piece 891 mounted on the drawing member 881 makes contact with the guide rail 24 provided on the sill 2, as shown in Fig. 5, by which the upper and lower portions of the meeting rail 32 of the inner sash B 1 are drawn toward the outdoor (while the portion of the inner sash which is close to the style 321 is pressed against the auxiliary drawing roller 104a and is thereby drawn toward the receiving piece 31b of the right jamb 31). Also, the upper and lower intermediate drawing rollers 91 and 911 provided on the vertically movable upper and lower rods 87 and 871 respectively press against the upper and lower intermediate receiving pieces 15 and 151 provided on the inner surface 13c of the meeting rail 10 of the outer sash B, by which the intermediate portion of the meeting rail 32 is drawn toward the outdoor.

As the upper drawing member 88 is raised, the horizontally movable upper rod 94 is moved toward the style 32' (the right jamb 31) through the upper plate spring 92 and the upper intermediate drawing piece 96 mounted on the horizontally movable upper rod 94 is thereby pressed against the outer surface of the upper intermediate receiving piece 97 moved through the notch 98 and located on the inner _side of the rising piece 96a due to the displacement of the inner sash B' toward the outdoor. Also, as the lower drawing member 881 is lowered, the horizontally movable lower rod 94' is moved toward the style 321 through the lower plate spring 921, and the lower intermediate drawing piece 961 mounted on the horizontally movable lower rod 941 is thereby pressed against the outer surface of the lower intermediate receiving piece 971 moved through the notch 981 and located on the inner side of the hanging piece 961a due to the displacement of the inner sash B' toward the outdoor, by which the intermediate portions of the upper and lower rails 30 and 31 is of the inner sash B' are drawn toward the outdoor.

As a consequence of outward movement of the above-described comDonents, the outer tightening material 12 of the inner sash B' comes into contact the central firat tightening material 18 provided on the outer piece 10a of the meeting rail 10 of the outer sash B, and the first- tightening material 5 provided on the outer pieces la and 2b of the head 1 and the sill 2 and the outer piece 3'a of the right jamb 3' comes into contact with the outer tightening material 12, as in the case of the outer sash B. Furthermore, as in the case of the outer sash B, the outer pieces 30b, 31b and 321b of x the upper rail 30, the lower rail 31 and the style 321 comes into contact with the second tightening material 7, and double sealing of the inner sash BI in the same plane as that for the gap between the outer sash and the window frame A is_ thereby achieved. The gap between the meeting rail 10 of the outer sash B and the meeting rail 32 of the inner sash BI is hermetically double-sealed by the contact of the central second tightening material 14 with the outer piece 32b of the meeting style 32 of the inner sash BI and by the outer tightening material 12 provided on the meeting style 32 of the inner sash with the central first tightening material 18.

When the opening R (window) is to be opened, the components are returned to their original positions by the operation of the operation handle 81, and the inner sash B' is is thereby moved toward the indoor. When the handle 10S is operated, the arm piece 106 is pivoted, by which the pressing roller 108 provided on the arm piece 106 pushes the outer sash B toward the right jamb 3'. As a result, the spacers 27 and 271 are disengaged the notches 29 and 291 and the opening operation of the outer sash B is thereby made smooth.

Claims

CLAIMS:

1. A horizontally sliding plane sash window in which an inner sash and an outer sash are horizontally slidably provided in an opening provided in a window frame formed by a head, a sill and right and left jambs and in which the outer end surface of a glass panel of said inner sash and the outer end surface of a glass panel of said outer sash are located in the same plane when said opening is closed by moving said inner sash toward one of said jambs and said outer sash toward the other jamb, the improvement being characterized in that said outer sash is supported by at least pair of lower wheels which move along a lower guide rail provided on said sill while said inner sash is supported by at least pair of sash pulleys which move in that a said upper guide rail along an upper guide rail provided on said head, curved gap is provided between one end portion of guide rail located on the inner side of said lower which is closer to one of said jambs and said jamb in such a manner that it gradually approaches said lower guide rail, and in. that a roller which moves along said curved gap is fitted into said curved gap, said roller being rotatably supported at one end of an arm piece whose other end is. pivotaly mounted on an upper end of a style of said inner sash.

2. A horizontally sliding plane sash window according to claim 1, wherein said upper guide rail is constructed by a pair of horizontal piece which are in alignment with each other in a direction transverse to the plane of said _sash window with a guide gap therebetween.

3. A horizontally sliding plane sash window according to either of claims 1 and 2, wherein said guide gap communicates with said curved gap.

4. A sash window comprising an outer frame including a head# a cill and opposed jambsy the head and cill being provided with respective guide rails, a first sash supported for horizontal sliding movement on the cill guide rail, and a second sash supported for horizontal sliding movement from the head guide rail, the first and second sashes being arranged in a common plane between the jambs when the window is closed and one of the sashes being movable out of said common plane when the window is opened.

5. A sash window substantially as hereinbefore described with reference to the accompanying drawings.

Published 1990 at The Patent Office. State Hcuse-66 71 High Holborn. London WClR4TP.Ftrther copies may be obtained from The Patent Office. Sales Branch, St Mary Cray, Orpington, Kent BR5 3RD. Printed by Multiplex techniques ltd, St Mazi Cray, Kent, Con. 1187