GB2394500A

GB2394500A - Shutter simulation blind with detachable side block elements

Info

Publication number: GB2394500A
Application number: GB0300659A
Authority: GB
Inventors: Ming Nien
Original assignee: Nien Made Enterprise Co Ltd
Current assignee: Nien Made Enterprise Co Ltd
Priority date: 2002-10-22
Filing date: 2003-01-13
Publication date: 2004-04-28
Anticipated expiration: 2023-01-13
Also published as: GB0300659D0; GB2394500B; AU2003200102A1; TW553305U

Abstract

A blind assembly comprises two longitudinal side blocks 14 fixed at the sides of a window, each side block having a front shielding wall (18, Fig 3) facing the inside of the room in which the window is formed, where each side block comprises at least two detachable modules 141, 142 connected in a line. The assembly as shown in Fig 2 also comprises a head rail (12) and a bottom rail with a set of slats (24) between them, with at least two ladder tapes (32) in parallel which join the slats. Also included in the assembly is a tilt control mechanism (42) which comprises a control rod (46) to pivot the slats, and a lift lock (48, Fig 4). The ladder tapes may be concealed behind the shield walls of the side blocks. Further defined is a shutter assembly with two side blocks and a middle block (83c, Fig 10), also made from detachable block elements, with a blind unit positioned either side of the middle block.

Description

SlllJTTER SIMULATION VENETIAN BLIND BACKGROUND OF THE INVENTION

1. Field of the Invention:

5 rIhe present invention relates to blinds and, more specifically, to a shutter simulation Venetian blind that simulates the outer appearance of a shutter.

2. Description of the Related Art:

FIG. 1 shows a typical conventional shutter 90 made of solid wooden material or metal (normally, aluminum). The shutter 90 comprises a shutter frame 92, 10 louvers 96 transversely arranged in parallel within the shutter frame 92 between the top and bottom blocks of the shutter frame 92 and respectively pivoted with the respective opposite ends to the two opposite side blocks of the shutter frames 92 at an equal pitch, and an operating rod 98 pivoted to each of the louvers 96 and vertically disposed at the front side of the shutter frame 92 on the middle. When the user pulled the operating rod 15 98 upwards or downwards, the louvers 96 are tilted between the open position and the close position. Because this design of shutter has a nice look, it decorates the window, making the room (house) beautiful. However, due to high manufacturing cost, many consumers are hesitating about buying a shutter when selecting a blind. Further, when regulating the view field through, the user can only move the operating rod to tilt the

20 louvers. Even when the louvers maintained in horizontal, the louvers and the operating rod still block a certain part of the view field.

SUMMARY OF THE INVENTION

The present invention has been accomplished under the circumstances in 25 view. It is the main object of the present invention to provide a shutter simulation

Venetian blind, which simulates the outer appearance of a shutter.

It is another object of' the present invention to provide a shutter simulation Venetian blind, which decorates the window, making the room (house) beautiful.

It is still another object of the present invention to provide a shutter 5 simulation Venetian blind, which has a simple structure, and is inexpensive to manufacture. It is still another object of the present invention to provide a shutter simulation Venetian blind, which enables the user to tilt the slats as well as to extend out or receive the slats.

10 To achieve these objects of the present invention, the shutter simulation Venetian blind comprises a plurality of longitudinal blocks including two side blocks fixedly provided at two opposite lateral sides of the window, a headrail, a top block, a bottom rail, a plurality of slats arranged in parallel between the headrail and the bottom rail, at least two ladder tapes, a tilting control mechanism, and a lift lock adapted to lock 15 the bottom rail at a desired elevation. Each longitudinal block is comprised of at least two block elements detachably connected in a line and has a top end and a bottom end respectively extended to the elevations of top and bottom sides of the window and a longitudinally extended front shielding wall facing the inside of the room in which the window is formed. The headrail is transversely and fixedly fastened to the top side of 20 the window between the top ends of the side blocks. The top block is fixedly provided at the top side of the window between the top ends of the side blocks to keep the headrail from sight. 'lithe bottom rail is transversely suspended below the headrail and vertically moveable relative to the headrail. 'I'he slats have two opposite ends respectively suspended behind the front shielding walls of the side blocks. The ladder 25 tapes are longitudinally arranged in parallel to join the slats. The ladder tapes include a

first ladder tape and a second latter tape longitudinally arranged in parallel at two sides and respectively connected to the ends of the slats behind the Front shielding walls of the side blocks. The ladder tapes each have a top end and a bottom end respectively fastened to the headrail and the bottom rail. The tilting control mechanism has a tilt rod 5 pivotally mounted inside the headrail for free rotation to drive the ladder tapes to tilt the slats' and at least one operating rod suspended between the side blocks and suspended from the headrail for twisting by the user to rotate the tilt rod.

BRIEF DF,SC'RIPl ION OF THE DRAWINGS 10 FIG. I is a perspective view of a conventional shutter.

FIG. 2 is a schematic front view of a shutter simulation Venetian blind constructed according to a first preferred embodiment of the present invention.

FIG. 3 is a sectional view taken along line 3-3 of FIG. 2.

FIG. 4 is a sectional view taken along line 4-4 of F IG. 2.

15 FIG. 5 is a perspective exploded view in an enlarged scale of one longitudinal side block according to the first preferred embodiment of the present invention. FIG. 6 is a front view in section in an enlarged scale of a part of the first embodiment of the present invention, showing the longitudinal side block assembled.

20 FlG. 7 is a front sectional view showing an alternate form of the longitudinal side block according to the first embodiment of the present invention.

FIG 8 is a sectional view in transverse direction of a shutter simulation Venetian blind constructed according to a second preferred embodiment of the present invention 25 FlG 9 is a sectional view in transverse direction of a shutter simulation

Venetian blind constructed according to a third preferred embodiment of the present invention. FIG. 10 is a sectional view in transverse direction of a shutter simulation Venetian blind constructed according to a fourth embodiment ofthc present invention.

DETAILED D}OSC'RIPTION OF TllE INVENTION Referring to FIG. 2, a Venetian blind l 0 in accordance with the first embodiment of the present invention is shown comprising a headrail 12, a transverse top block 13, two longitudinal side blocks 14, a transverse bottom block 19, a bottom 10 rail 22, a set of slats 24, two ladder- tapes 32, a tilting control mechanism 42, and a lift lock 48 (see also FIG. 4).

the headrail 12 is a tubular- rmcmber slightly shorter than the transverse length of the window and fixedly provided at the top side of the window (according to this embodiment, the head-ail is fixedly fastened to the wall inside the house above the I5 window; alternatively, the headrail can be fixedly fastened to fire top wall within the window). The longitudinal side blocks 14 are fixedly provided at the left and side sides of the window. The length of the longitudinal side blocks 14 is approximately equal to the longitudinal length of the window. As shown in FIGS. 3 and 4, the side 20 blocks 14 are shaped like an angle bar, each having a flat mounting wall 16 and a flat shielding wall 18 connected at right angles. The flat mounting wall 16 is fixedly fastened to one lateral sidewall within the window, keeping the flat shielding wall 18 suspended at the front side of the window (if the headrail is fixedly fastened to the top wall in the window, the flat shielding wall shall be maintained in flush with the wall 25 inside the house in which the window is formed) Because the length ol the longitudinal

side blocks 14 is approximately equal to the longitudinal length of the window which may be longer than 2 meters (normally, the longitudinal length of a regular window is longer than its transverse length), it is inconvenient to store, pack, or delivery long longitudinal side blocks. In order to eliminate this problem, the longitudinal side blocks 5 are preferably formed of multiple segments. According to this embodiment, each longitudinal side block 14 is comprised of a top block element 141, a bottom block element 142, and a coupling member 143 joining the top block element 141 and the bottom block element 142. The top block element 141 and the bottom block element 142 are about one half of the longitudinal length of the window. As illustrated in FIGS. 10 5 and 6, the coupling member 143 has an upwardly extended recessed top coupling hole 144 and a downwardly extended recessed bottom coupling hole 145 respectively formed in the top and bottom sides thereof The top block element 141 has a bottom end terminating in a bottom plug portion 146 detachably press-fitted into the upwardly extended recessed top coupling hole 144 of the coupling ruember 143. The bottom 15 block element 142 has a top end terminating in a top plug portion 147 detachably press-fitted into the downwardly extended recessed bottom coupling hole 145 of the coupling member 143. When assembled, the top block element 141, the bottom block element 142 and the coupling member 143 have the respective surfaces maintained in flush. Alternatively, each longitudinal side block 14 can be formed of a top block 20 element 141' and a bottom block element 142' as shown in FIG. 7. The top block element 141' and the bottom block element 142' are detachably connected in a line by means of, for example, a tongue-and-groove joint.

The transverse top block 13 is fixedly provided at the top side of the window and connected between the top ends of the side blocks 14, keeping the headrail 25 12 from sight.

The transverse bottom block] 9 is fixedly provided at the bottom side of the window and connected between the bottom ends of the side blocks 14.

I'he bottom rail 22 is shorter than the transverse length of the window and provided below the headrail 12 for vertical movement between the top block 13 and talc bottom block 19 The two opposite ends of' the bottom rail 22 are respectively suspended in the side blocks 14 behind the flat shielding walls I 8 of the side blocks 14 (see FIG. 4) The slats 24 arc equal to the bottom rail 22 in length, and arranged in parallel between the headrail 12 and the bottom rail 22. As illustrated in FIG. 3, each 10 slat 24 has end notches 26 symmetrically disposed at front and rear sides of the two distal ends thereof, forming two end protrusions 28 at the two distal ends. The end protrusions 2X of' the slats 24 are respectively suspended behind the flat shielding walls 18 of the side blocks 14 When the slats 24 held in horizontal as shown in FIG 3, the front edge of each slat 24 is maintained in flush with the front surfaces of the flat 15 shielding walls 18 of the side blocks 14 The ladder tapes 32 are longitudinally arranged in parallel to hold the slats 24 between the headrail 12 and the bottom rail 22. As illustrated in FIG 3, the ladder tapes 32 are respectively fastened to the end protrusions 28 of the slats 24, and kept from sight by the flat shielding walls 18 of the side blocks 14 Each ladder tape 32 20 comprises a longitudinal front tape 34 and a longitudinal rear tape 36 longitudinally arranged in par-allcl at two sides of the end protrusions 28 of the slats 24, and a plurality of transverse connecting cords 38 respectively fastened to the end protrusions 28 of the slats 24 and connected between the longitudinal front tape 34 and the longitudinal rear tape 36 25 'I'he tilting control mechanism 42 is comprised of a transverse tilt rod 44

an1 fin oTlcT;tiT" T ot1 4(.}3c tT i)T]S\eTSC tilt i od 4 1 is pi\ otilly pi ovidcd iT]Si3C ti]C lciclT-iil 1 2 toT T ot ittiOT1 on itS OWT] iXiS lie to| crlfTs ot tle it)T],L',itU(lilTill fi int tilc 3 aTi loTT-, itudiTiitl TCiT' tipc 3' OT tl]C lacilc' tapes 32 tiTC TCS|)CCti\!CIy tixColy TtaStCilCd to tle TiOilt a'd bck Si(TCS oi tlic tut' distal c'ids of tl3e tilt od 41. \:V'ei Totatitig tlie tilt oc1 i14, tle loTTy, itTTciiTil liot tv|'c:3 i i\T\ti ltiTig,itUtiiTTil] TC'aT till)C.3(y ot eacl liiLldei talc -32 aT-C Ino\!cci VeT-tiCally relatiVc tc, each otlier, thcT-chy casin' the slats 24 to he SyT]cllTt:)T]Isly tilled 1 Tle () lDel<itil], T()d 4() iS I()Tititil(]iTliLlly iSI))St-ii t)T] tlc Ticlill (egually spaced betweeT tTe loT,gitudiTlal side blocks 14) ITT iiont oi tle slits 24, 1aviig--

a top end pivoted to the headrail] 2 When twisting thc operatiny, rod 46, the tilt rod 44 10 is rotated to adjust the tilting angle of the slats 24 (RemaT-k- because the transmissio mechanisTn letween the tilt rod 44 and the oyerating ro<1 4G and the transTnission TneclTanisTn bctwoen the tilt rod 44 and the!adder tapes 32 are of the known art, no further detailed descriptions in this regard is necessary).

15 The lift lock 48 is adapted to lock the bottom rail 22 at the desired elevation As illustrated in FIG 4, the lift lock 48 comprises two elongated first magnetic elemerTts 52 respectively longitudinally located on the back side of the flat shielding wall 1X r-'I' each of the side blocks 14 (each t'ir-st magnetic element 52 may be i'ornTed of several parts respectively fastened to the top block element 141, bottom block element 142 and 2U coupling meTnber- 143 ot' the corresponding longitudinal side block 14), and two second Tnagnetic elenTents 54 respectively located on the fi<:>nt side near- the two distal ends of the bottom rail 22 COT-TCSpOnditlp to the t;T-St magnetic cleWcnts 52 When the botu'' tail 22 pullc.ri t<:'rwaTds, t'e fitst i,a,,tetic 1eTTetts 52 tttt-act tile SCCoTiCi tTlaTletiC Cl'T,C,tlS 54 r-csl:cctivl,,!, Itt, IciiT, tITe l!:>tl>t Tail 22 it |,SitiT ()t tlic C,tt'iN, \1 2> 1-liet tlTe l,ttotT <il 22 itch\ ils t' (iiSt'Ti.',tT,C tlc scc;t:i tTTC>tiC. Icrt, Tts 1

from the first magnetic elements 52, the user can then adjust the elevation of the bottom rail 22. Alter-natively, the side blocks 14 can be directly made of iron for- securing the magactic elements 54 at the ends of the bottom rail 22 by means of magnetic attraction In this case, the t'irst magnetic elements 52 are eliminated; or the bottom rail 22 can be 5 made of iron for fastening to the magnetic elements 52 at the side blocks 14 by means of magnetic attraction. In this case, the magnetic elements 54 are eliminated.

Referring to I<IG. 2 again, the Venetian blind 10 according to the first embodiment of the present invention has an outer appearance apparently dift'erent from conventional Venetian blind, i.e., the Venetian blind 10 simulates the outer appearance 10 of a shutter. In comparison with conventional shutters, the Venetian blind 10 is less expensive and, highly acceptable to consumers. By means of the tilting control mechanism 42 and the lift lock 4X, the user can conveniently adjust the tilting angle of the slats 24 and the elevation of the bottom rail 22 to regulate the light.

According to the aforesaid first embodiment, each longitudinal side block IS 14 is comprised of a top block element 141 and a bottom block element 142. In actual practice, each longitudinal side block can be formed of multiple block elements of different lengths For example, the supplier can provide block elements subject to three specifications, 36", 72", and 84" so that the consumer can connect two 36" block

elements to form a 72" longitudinal side block, one 36" block element and one 72" 20 block element to form a 108" longitudinal side block.

In the aforesaid first embodiment of the present invention, magnetic elements are used to lock the bottom rail at the desired elevation Other lift lock structures may be selectively used. I7or exampic7 the teaching ol'kooping spring t'or-ce and article gravity hi balance as disclosed in US patent Nos. 6,()12,5()6; 6,()24,154; 25 (S,O29,734 (equivalent. to Taiwan patent publication Nos. 392792, 363(j777 363G72)

issued to the present applicant may be employed to lock the bottom rail at the desired elevation. The lit's lock designs as shown in US No. 6,O44, 889 and Taiwan application No. 91204732 can also he used. According', to these designs, two positioning cord members are respectively extended from the hcadrail, and then inserted in parallel S thr-ougl1 the slats into the bottom rail, and then extended along the length of the bottom rail in reversed direction across each other to the outside of the ends of the bottom rail, and then respectively fastened to two vertical side rails outside the blind body. 'I'he invention eliminates the use of an exposed lift cord. The use of an exposed lift cord destroys the beauty of the shutter-like otTter appearance of the Venetian blind, and may 10 cause an accident when played by a child.

FIG. 8 is a sectional view of a Venetian blind 60 according to the second preferred cmbodimerIt of the present invention (corresponding to FIG. 3 of the first preferred embodiment of the present invention). According to this design, the slats 62 are relatively longer than the slats of the aforesaid first embodiment, and the two ladder 15 tapes 64a and 64b may be insut'ticient to support the slats 62 in balance. In order to eliminate this drawback, a third ladder tape 64c is installed in the slats 62 on the middle between the first ladder tape 64a and the second ladder tape 64b. Because the third ladder tape 64c is disposed behind the operating rod 66, the operating rod 66 keeps the third ladder tape 64c from sight (if necessary, the operating rod 66 can be thickened, or 20 the ladder tapes 64a- 64c can be made of transparent belts or cord members.).

FIG. 9 is a sectional view of a Venetian blind 70 according to the third preferred embodiment of the present invention. According to this design three ladder tapes 72 are provided to join the slats 71; a Oat middle block 73 is vertically connected between the top and bottom sides of the window on the middle in front of' 25 the slats 71, f'orTTling a shield 74 that keeps the middle ladder tape 72 Tom sight

According to this embodiment, the side blocks 75 and 76 are fixedly provided at the left and right sides of the window, and the flat middle block 73 divides the window into let's and right halves. L'urther, two operating rods 77 and 78 are arranged in parallel and respectively spaced between the net middle block 73 and the side blocks 5 75 and 76 on the middle t'or operation by hand to adjust the tilting angle of the slats 71 (the user can operate either of' the operating rods 77 and 78 to adjust the tilting angle ot' the slats 71). Alternatively, two flat blocks lady be vertically connected between the top and bottom sides of the window in front of the slats 71 to divide the window into three equal parts, and three operating rods may be respectively 10 suspended in the three equal parts of the window to join the slats for operation by the user to adjust. the tilting angle of the slats.

T7IG. 10 is a sectional view of the fourth preferred embodiment of the present invention. According to this design, two Venetian blinds 80A and 8013 are arranged in parallel. The length of headr-ails (not shown), slats 81a and 81b and 15 bottom rails (not shown) of the Venetian blinds 80A and 80B is about half of the transverse length of the window. The two Venetian blinds 80A and 80B are respectively arranged in the left and right halves of the window. The two Venetian blinds 80A and 80B each comprise a tilting control mechanism (having an operating rod 82a or 82b) and a lift lock. The user can adjust the tilting angle and elevation of 20 the slats 81a and 81b of the two Venetian blinds 80A and 80B separately. The two Venetian blinds 80A and 80B are used with two side blocks 83a and 83b and a middle block 83c. Similar to the aforesaid embodiments, the side blocks 83a and 83b are shaped like an angle bar-. The middle block X3c is an elongated bar ot'J'-shaped cross section comprising a front flat shielding wall 84, which keeps the protruded right 25 ends of the slats 81a ot' the first Venetian blind 80a and the protruded let's ends of the

slats 81a of the second Venetian blind 80b from sight, and a back partition wall 85 perpendicularly extended from the back side of the front flat shielding wall 84 to separate the slats 81a and 81b ofthc Venetian blinds 80a and 80b.

Claims

WIIAT IS CLAIMED IS:

1 A shutter simulation Venetian blind installed in a window formed in the wall of a room for regulating the light, comprising: 5 at least two longitudinal blocks including two side blocks fixedly respectively provided at two opposite lateral sides -'f said window, said longitudinal blocks each having a top end and a bottom end respectively extended to the elevations of top and bottom sides of said window and a longitudinally extended front shielding wall facing the inside ot the room in which said window is formed, said longitudinal 10 blocks each comprised of at least two detachable block elements connected in a line; a headrail transversely and fixedly fastened to a top side of said window between the top ends ot said side blocks, a bottom rail transversely suspended below said headrail and vertically moveable relative to said headrail, said bottom rail having a length approximately equal 15 to said headrail; a plurality of slats arranged in parallel between said headrail and said bottom rail, said slats having a length approximately equal to said headrail; at least two ladder tapes longitudinally arranged in parallel to join said slats, said ladder tapes each having a top end and a bottom end respectively fastened to said 20 headrail and said bottom rail, a tilting control mechanism including a tilt rod pivotally mounted inside said headrail for *bee rotation to drive said ladder tapes to tilt said slats, at least one operating rod suspended between said side blocks and suspended from said headrail for twisting by the user to rotate said tilt rod, said at least one operating rod having a length 25 approximately equal to the longitudinal length of said window, the number ot said at 1 2

least one operating rod being less one of the number of'said longitudinal blocks; and a lift lock adapted to lock said bottom rail at a desired elevation 2 'I'he shutter simulation Venetian blind as claimed in claim 1, wherein said 5 slats each have two opposite ends respectively suspended behind the Font shielding walls of said side blocks; said ladder tapes include a first ladder tape and a second latter tape longitudinally arranged in parallel at two sides and respectively connected to the ends of said slats behind the front shielding walls of said side blocks 10 3 The shutter simulation Venetian blind as claimed in claim l, wherein the at least one operating rod of said tilting control mechanism each is approximately equally spaced between two next longitudinal blocks 4 The shutter simulation Venetian blind as claimed in claim 1, wherein said 15 longitudinal blocks each comprise a coupling member having a recessed top coupling hole and a recessed bottom coupling hole, a top block element having a bottom plug portion longitudinally extended from a bottom end thereof and press-fitted into the recessed top coupling hole of said coupling member, and a bottom block element having a top plug portion longitudinally extended from a top end thereof and press-fitted into 20 the recessed bottom coupling hole of said coupling member.

5 The shutter simulation Venetian blind as claimed in claim l, wherein said longitudinal hocks each comprise a first longitudinal block clement and a second longitudinal block element detachably connected in a line, said first longitudinal block 25 element having a female coupling portion, said second longitudinal block element

having a male coupling portion for engaging into the female coupling portion of said first. longitudinal block element.

6. 'the shutter simulation Venetian blind as claimed in claim 1, wherein the 5 number of said longitudinal blocks is 2, which arc rcspect.ively fixedly provided at the twit opposite lateral sides of said window; the number of said ladder tapes is 2.

7. The shutter simulation Venetian blind as claimed in claim 1, wherein the number of said longitudinal blocks is 2, which are respectively fixedly provided at the 10 two opposite lateral sides of said window; said ladder tapes include a third ladder tape equally spaced between said first ladder tape and said second ladder tape behind one of said at least one operating rod of'said tilting control mechanism.

8. The shutter simulation Venetian blind as claimed in claim 1, said headrail 15 has a length approximately equal to the transverse length of said window, said longitudinal blocks include said two side blocks respectively fixedly provided at the two opposite lateral sides of said window and a middle block equally spaced between said side blocks; said ladder tapes include a third ladder tape equally spaced between said first ladder tape and said second ladder tape behind said middle block.

9. The shutter simulation Venetian blind as claimed in claim 1, wherein said side blocks are shaped like an angle bar, each having a flat mounting wall backwardly extended from one lateral side of the respective front shielding wall at right angles and fixedly fastened to one lateral sidewall within said window.

tb 10 The shutter simulation Venetian blind as claimed in claim 1, wherein said bottom rail has two distal ends respectively suspended behind the l'ront shielding walls of said side blocks.

S 11. 'I'hc shutter simulation Venetian blind as claimed in claim 10, wherein said lift lock comprises two first magnetic elements longitudinally located on the front shielding walls of said side blocks at a back side ['acing the ends Unsaid slats, and two second magnetic elements respectively located on the ends of said bottom rail for fastening to said first magnetic elements by magnetic attraction to hold said bottom rail 10 at the desired elevation.

12. 'I'he shutter simulation Venetian blind as claimed in claim 1, wherein said slats each have two protrusions respectively extended from the ends thereof and connected to said first and second ladder tapes and suspended behind the front shielding 15 walls of said side blocks.

13. The shutter simulation Venetian blind as claimed in claim], wherein said ladder tapes are made of transparent cord members.

20 14. 'I'he shutter simulation Venetian blind as claimed in claim I further comprising a top block and a bottom block respectively and fixedly fastened to the top and bottom sides of said window and connected between the top ends and bottom ends of said side blocks, said top block keeping said hcadrail l'rom sight.

25 15 'I'he shutter simulation Venetian blind as claimed in claim 1, wherein IS

said headrail is fixedly fastened to the wall of the room in which said window is formed and disposed above said window the front shielding walls of said side blocks protruded forwardly trom the wall ol the room in which said window is l-'rmed 5 16 The shutter simulation Venetian blind as claimed in claim 1 wherein said headrail is fixedly mounted within said window at a top side; the Front shielding walls ot said side blocks are disposed in tiush with the wall of the room in which said window is formed 10]7. The shutter simulation Venetian blind as claimed in claim 1 wherein said headrail is fixedly mounted within said window at a top side the front shielding walls of said side blocks are forwardly protruded over the wall of the room in which said window is formed 15 18 A shutter simulation Venetian blind installed in a window formed in the wall of a room for regulating the light comprising: two side blocks each having a top end and a bottom end respectively extended to the elevations of top and bottom sides of said window and a longitudinally extended front shielding wall facing the inside of the room in which said window is 20 formed said two side blocks each comprised of at least two detachable block elements connected in a line; a middle block longitudinally connected between the top and bottom sides of said window and equally spaced betweens aid side blocks said middle blocks each comprised of at least two detachable block elements connected in a line; and 25 two blind units err anged in parallel between said side blocks and said

middle block, said blind units each comprising a hcadrail transversely and fixedly fastened to the top side of said window between said middle block and one of said side block, a bottom rail transversely suspended below said hcadrail and vertically moveable relative to said hcadr-ail, a plurality of' slats ar-r-anged in parallel between said hcadrail 5 and said bottom rail, said slats having two opposite ends respectively suspended behind the front shielding wall of one of said side blocks and a part ol said middle block, at least two ladder tapes longitudinally arrangcd in parallel to join said slats, said ladder tapes including a first ladder tape and a second latter tape longitudinally ar-r-anged in parallel at two sides and respectively connected to the ends of said slats behind the front 10 shielding wall of one of said side blocks and a part of said middle block, said ladder tapes each having a top end and a bottom end respectively fastened to said headrail and said bottom rail, a tilting control mechanism having a tilt rod pivotally mounted inside said headrail for free rotation to drive said ladder tapes to tilt said slats, at least one operating rod suspended between said side blocks and suspended from said hcadrail lor 15 twisting by the user to rotate said tilt rod, and a lift lock adapted to lock said bottom rail at a desired elevation.

19. The shutter simulation Venetian blind as claimed in claim 18, wherein said middle block is formed of an elongated bar of T-shaped cross section comprising a 20 front flat shielding wall, which keeps one end of each slat of each of said blind units from right, and a back partition wall perpendicularly extended from a back side of the front flat shielding wall of said middle block to separ-atc the slats of said two blind units.

20. A shutter simulation Venetian blind substantially as hereinbefore described with reference to Figures 2 to 7, Figure 8, Figure 9 or Figure 10 of the accompanying drawings.