TWI747491B - Venetian blinds for easy adjustment of the blade angle - Google Patents

Abstract

The present invention relates to a blind, which includes an upper beam, a lower beam and a plurality of blades arranged between the upper beam and the lower beam, wherein a bracket is respectively provided at the left and right ends of the upper beam, and each bracket Set up a rotating drum. The two rotating drums can rotate synchronously through the connection of a transmission shaft, and are connected with a first pulling part and a second pulling part. If you want to control the closing of the blades, use the first A pulling member pulls down one of the rotating drums to rotate the two rotating drums from the first position to the second position. During the rotation, the two ladder ropes control the closing of the blades. When you want to control the opening of the blades, use The second pulling member pulls down another rotating drum to return the two rotating drums from the second position to the first position, and controls the blades to open through the two ladder ropes during the rotation.

Description

Venetian blinds for easy adjustment of the blade angle

The present invention is related to curtains, and particularly refers to a blind curtain that is convenient to adjust the angle of the blades.

In order to change the amount of light that the external light enters the room, the traditional curtain structure will be equipped with a set of blade angle adjustment mechanisms disclosed in patent documents such as TW M569787 and TW M551651 to control the angle of the blade. To put it simply, the conventional blade angle adjustment mechanism mainly includes a shell, a worm wheel and a worm. The shell is installed in the upper beam of the curtain. The worm wheel is rotatably installed in the shell, and one end of the worm penetrates the shell. The body is engaged with the worm wheel. The other end of the worm passes through the shell and protrudes out of the upper beam to provide a rotating rod for hooking, so that the user can drive the worm by the aforementioned rotating rod. When the worm is driven to rotate After that, the worm wheel can be driven to rotate, and then the worm wheel can adjust the angle of the blades through other transmission elements.

However, since the worm and the worm wheel are already installed in the housing when the product leaves the factory, the worm protruding from one end of the upper beam can easily squeeze to the uppermost blade after the product is packaged, causing the blade to be deformed or damaged. The problem of breakage may even occur due to collision during transportation. Therefore, it is necessary to improve the aforementioned structure.

The purpose of the present invention is to provide a blind, which has a simple structure and is easy to operate, and can avoid damage to the blades during packaging or transportation.

In order to achieve the above-mentioned object, the blind of the present invention includes an upper beam, a lower beam, a plurality of blades, a blade angle adjustment component, a first pulling member, and a second pulling member. The blade angle adjustment assembly has two brackets, a first rotating drum, a second rotating drum, a transmission shaft and two ladder ropes. The brackets are fixed in the upper beam and located on the left and right sides of the upper beam. At two ends, the first rotating drum and the second rotating drum are respectively rotatably arranged on a bracket, and the transmission shaft connects the first rotating drum and the second rotating drum so that the first rotating drum and the second rotating drum The drum can rotate synchronously between a first position and a second position. Each ladder rope has a front warp, a back warp and multiple wefts connected between the front warp and the back warp. , The front warp threads and the back warp threads are located on the front and back sides of the blades, and the top ends of the front warp threads and the back warp threads are respectively connected to the first drum and the second drum, The bottom ends of the front warp threads and the bottom ends of the back warp threads are respectively connected to the lower beam, and the weft threads respectively bear a bottom surface of the blade. When the first drum and the second drum are located in the first Position, the ladder ropes are pulled by the first rotating drum and the second rotating drum to keep the blades in the open state. When the first rotating drum and the second rotating drum are in the second position, The ladder ropes are pulled by the first rotating drum and the second rotating drum to drive the blades to deflect to a closed state; the first pulling member is suspended in front of the blades and is connected to the first Rotary drum; The second pulling member is suspended in front of the blades and is connected to the second rotating drum with its top end.

To control the closing of the blades, use the first pulling member to pull down the first rotating drum, so that the first rotating drum drives the second rotating drum through the transmission shaft to rotate from the first position to the second position. Position. During the rotation of the two, the blades are controlled to close by the ladder ropes. Then, when the blades are to be controlled to open, the second pulling member is used to pull down the second rotating drum to make the second rotating drum The first rotating drum is driven from the second position back to the first position through the transmission shaft, and the blades are controlled to open through the ladder ropes during the rotation of the two. In addition, since the first puller and the second puller are suspended in front of the blades, they will not be squeezed against the blades after the product is packaged. This can solve the problem of the problems of the blades. Deformation or damage that may occur during transportation.

Preferably, the first pulling member and the second pulling member are both a belt body, and the belt body is not limited to being made of leather, cloth or elastic materials.

Preferably, the first pulling member passes around the top surface of the first rotating drum and the rear side of the first rotating drum and is connected to the bottom surface of the first rotating drum, so that the first rotating drum is pulled by the first rotating drum. When the lead piece is pulled, it will turn over from top to bottom. The second drawing piece passes through the bottom surface of the second rotating drum and the rear side of the second rotating drum and is connected to the top surface of the second rotating drum, so that the When the second rotating drum is pulled by the second pulling member, it will turn over in situ from bottom to top.

Preferably, the left and right ends of the upper beam are respectively provided with a through hole, and the first pulling member and the second pulling member respectively pass through the through hole so as not to interfere with each other.

Preferably, the top end of the first drawing member has a first hollow groove, and the first hollow groove accommodates a part of the front and back warp threads of the ladder rope so as not to interfere with each other.

Preferably, the top end of the second drawing member has a second hollow groove, and the second hollow groove accommodates a part of the front and back warp threads of the ladder rope so as not to interfere with each other.

The detailed structure, characteristics, assembly or use of the blinds provided by the present invention for convenient adjustment of the angle of the blades will be described in the detailed description of the subsequent embodiments. However, those with ordinary knowledge in the field of the present invention should be able to understand that these detailed descriptions and specific examples for implementing the present invention are only used to illustrate the present invention, and are not intended to limit the scope of the patent application of the present invention.

The applicant first explains here that throughout the specification, including the following embodiments and claims in the scope of the patent application, the terms related to directionality are based on the directions in the drawings. Secondly, in the following embodiments and drawings, the same element numbers represent the same or similar elements or their structural features.

Please continue to refer to FIGS. 1 and 2. The blind 10 of the present invention includes a lower beam 20, an upper beam 30, a plurality of blades 40 (the number is not limited), a blade angle adjustment assembly 50, and a first drawing member 80, and a second pulling member 84.

As shown in Figures 3 and 5, the upper beam 30 has a bottom plate 31, a front side plate 32, and a rear side plate 33. The bottom end of the front side plate 32 is vertically connected to the front side of the bottom plate 31, and the bottom end of the back side plate 33 is vertically connected. On the rear side of the bottom plate 31, there are a perforation 34 and two embedding holes 35 at the left and right ends of the bottom plate 31 respectively (as shown in FIG. 7).

The blades 40 are arranged between the upper beam 30 and the lower beam 20 at equal intervals. As shown in Figures 3 and 5, the left and right ends of each blade 40 respectively have a long hole 42. The left and right long holes 42 are respectively penetrated by a lifting rope 12, and the top ends of the two lifting ropes 12 are connected. A rope reel 14 (this is a conventional technology and not the focus of this case, and its detailed structure will not be repeated here). The bottom ends of the two lifting ropes 12 are connected to the lower beam 20, and the user exerts an upward thrust on the lower beam 20 And the reeling force of the rope reel 14 on the two lifting ropes 12 causes all the blades 40 to be folded together during the movement of the lower beam 20 toward the upper beam 30 to achieve a folding effect.

The blade angle adjustment assembly 50 has two brackets 52, two rotating drums 58, 60, a transmission shaft 62 and two ladder ropes 66, of which:

As shown in FIGS. 2, 4 and 6, the two brackets 52 are located at the left and right ends of the upper beam 30 and respectively have a bottom wall 54 and two vertical walls 56. The bottom wall 54 has two embedding portions 542, and each embedding portion 542 is penetrated by a bottom hole 544. The two upright walls 56 are vertically connected to the left and right sides of the bottom wall 54 and each have a pivot slot with an opening facing upward. 562. As shown in Figures 7 and 9, each bracket 52 is assembled in the two insertion holes of the bottom plate 31 of the upper beam 30 with the two embedding portions 542 of the bottom wall 54, and the two brackets 52 are opposite to each other in the front and back. Way to assemble.

The two rotating drums 58 and 60 have exactly the same structure, but are assembled to the two brackets 52 in a reverse manner. The two rotating drums are respectively the first rotating drum 58 and the second rotating drum 60. As shown in FIG. 4, the first rotating drum 58 has a first shaft portion 582 and a first polygonal shape passing through the first shaft portion 582. Axle hole 584 (here, a hexagonal hole is taken as an example), the first rotating drum 58 is erected on the two pivot slots 562 of one of the brackets 52 with the first shaft portion 582; as shown in FIG. 6, the second rotating drum 60 has a second shaft portion 602 and a second polygonal shaft hole 604 passing through the second shaft portion 602 (here a hexagonal hole is taken as an example), and the second rotating drum 60 is mounted on the second shaft portion 602 Two pivot slots 562 of the other bracket 52.

As shown in FIGS. 2-6, the cross-sectional shape of the transmission shaft 62 is polygonal (here, a hexagonal hole is taken as an example). The left and right ends of the transmission shaft 62 respectively penetrate through the first polygonal shaft hole 584 of the first rotating drum 58 and the second polygonal shaft hole 604 of the second rotating drum 60, and are respectively sleeved at the left and right ends The stop ring 64 prevents separation, so that the first rotating drum 58 and the second rotating drum 60 can rotate synchronously through the transmission shaft 62.

Each ladder rope 66 has a front warp 68, a back warp 70, and a plurality of wefts 72 connecting the front warp 68 and the back warp 70. As shown in FIGS. 3 to 5, the front and back warps of the two ladder ropes The lines 70 are immediately adjacent to the front and back sides of the blades 40. The bottom ends of the front and back warp lines 70 of the two ladder ropes 66 are connected to the lower beam 20, and the top end of the front and back warp lines 70 of one of the ladder ropes 66 passes through a support The bottom hole 544 of the bottom wall 54 of the frame 52 is clamped to the top surface of the first drum 58, and the top end of another front and back warp thread 70 passes through the bottom hole 544 of the bottom wall 54 of the other bracket 52 and clamps Connected to the bottom surface of the second rotating drum 60. As for the weft 72 of the two ladder ropes 66 respectively, the bottom surface of a blade 40 is received.

It should be supplemented here that the blade angle adjustment assembly 50 can add a bracket 52 and a rotating drum 74 at the middle position of the upper beam 30 according to actual needs (such as the size of the overall structure), as shown in FIGS. 1 and 2 As shown, the third drum 74 is assembled on the same drive shaft 62 (the assembly method is the same as the aforementioned two drums, which will not be repeated here), and is also connected with the third ladder rope 66 (assembly method The same as the two ladder ropes mentioned above, which will not be repeated here.) The combination of the three rotating drums 58, 60, 74 and the three ladder ropes 66 can make the deflection of the blades 40 more stable.

The first pulling member 80 may be a belt body or a rope body. In this embodiment, the belt body is taken as an example. As for the material, it may be made of leather, cloth or elastic material, which is not limited herein. As shown in FIGS. 2 to 4, the first pulling member 80 is suspended in front of the blades 40 and passes through the left perforation 34 of the upper beam 30 with its top end, and then passes through the top surface of the first rotating drum 58 and The rear side of the first rotating drum 58 is fixed to the bottom surface of the first rotating drum 58 by adhesive bonding. In addition, the top end of the first pulling member 80 has a first hollowed-out groove 82, and the first hollowed-out groove 82 accommodates the left and right ladder rope 66. Do not interfere with each other to avoid affecting the smoothness of operation.

The second pulling member 84 may be a belt body or a rope body. In this embodiment, the belt body is taken as an example. As for the material, it may be made of leather, cloth or elastic material, which is not limited here. As shown in FIGS. 2, 5, and 6, the second pulling member 84 is suspended in front of the blades 40 and passes through the right through hole 34 of the upper beam 30 with its top end, and then passes through the second rotating drum 60 The bottom surface and the rear side surface of the second rotating drum 60 are fixed to the top surface of the second rotating drum 60 by bonding. In addition, the top end of the second pulling member 84 has a second hollowed-out groove 86, the second hollowed-out groove 86 accommodates the right ladder rope 66, the front and back warp threads 68, 70 are fixed to the part of the second drum 60, so that they are between each other. Do not interfere with each other to avoid affecting the smoothness of operation.

It can be seen from the above that when the blades 40 are to be controlled to close, the first pulling member 80 is first pulled down, so that the first rotating drum 58 is deflected from the first position P1 shown in FIG. 7 to the second position shown in FIG. 8 Location P2. Since the first rotating drum 58 and the second rotating drum 60 rotate synchronously through the transmission shaft 62, the second rotating drum 60 will be deflected from the first position P1 shown in FIG. 9 to the second position shown in FIG. 10 at the same time P2, and retract a small section of the second pulling member 84 during the deflection process. In addition, the ladder ropes 66 are simultaneously pulled during the synchronous rotation of the two, so that the ladder ropes 66 drive the blades 40 to deflect and form a closed state.

Afterwards, to control the opening of the blades 40, the second pulling member 84 is pulled down to make the second rotating drum 60 reversely deflect from the second position P2 shown in FIG. 11 to the first position shown in FIG. 9 At position P1, since the first rotating drum 58 and the second rotating drum 60 rotate synchronously through the transmission shaft 62, the first rotating drum 58 will be reversely deflected from the second position P2 as shown in FIG. 12 to as shown in FIG. 7 In the first position P1, and a short section of the first pulling member 80 is retracted during the deflection process. During the synchronous rotation of the two, the ladder ropes 66 are simultaneously pulled, so that the ladder ropes 66 keep the blades 40 in the open state.

In summary, the blind 10 of the present invention allows the user to control the closing of the blades 40 by pulling down the first pulling member 80 when the blades 40 are opened, and by pulling down the second when the blades 40 are closed. The pulling member 84 controls the opening of the blades 40, which is quite simple and convenient in operation. Since the first pull piece 80 and the second pull piece 84 are suspended close to the front of the blades 40, and a relatively soft material can be selected, they will not be squeezed after the product is packaged. Waiting for the blades 40 can solve the problem of deformation or damage of the blades 40 that may occur during the transportation process.

10: Venetian blinds 12: Lifting rope 14: Rope reel 20: Lower beam 30: upper beam 31: bottom plate 32: front side panel 33: Rear side panel 34: Piercing 40: blade 42: Long strip hole 50: Blade angle adjustment component 52: bracket 54: bottom wall 542: Insertion Department 544: bottom hole 56: Wall 562: Pivot Slot 58: first reel 582: first shaft 584: The first polygon shaft hole 60: second drum 602: second shaft 604: The second polygon shaft hole 62: drive shaft 64: stop ring 66: Ladder Rope 68: front warp 70: Back warp 72: Weft 80: The first pull piece 82: The first hollow slot 84: second pull piece 86: The second hollow slot P1: first position P2: second position

Figure 1 is a perspective view of the blind of the present invention. Figure 2 is a partial perspective view of the blind of the present invention. Fig. 3 is a partial enlarged cross-sectional view of Fig. 1, which mainly shows the structural relationship between the first pulling member and the first rotating drum. Fig. 4 is a partial three-dimensional exploded view of the blade angle adjustment assembly provided by the blind of the present invention and the first drawing member. Fig. 5 is a partial enlarged cross-sectional view of Fig. 1, which mainly shows the structural relationship between the second pulling member and the second rotating drum. Fig. 6 is a partial three-dimensional exploded view of the blade angle adjusting assembly provided by the blind of the present invention and the second pulling member. Fig. 7 is a partial cross-sectional view of the end face of the blind of the present invention, which mainly shows that the first rotating drum is located at the first position. Fig. 8 is similar to Fig. 7 and mainly shows the state where the first pulling member is pulled down. Fig. 9 is a partial cross-sectional view of the end face of the blind of the present invention, which mainly shows that the second drum is located at the first position. Fig. 10 is similar to Fig. 9 and mainly shows that the second rotating drum is driven by the transmission shaft and deflects following the first rotating drum. Fig. 11 is similar to Fig. 10, and mainly shows the state where the second pulling member is pulled down. Fig. 12 is similar to Fig. 8 and mainly shows that the first rotating drum is driven by the transmission shaft and deflects following the second rotating drum.

10: Venetian blinds

12: Lifting rope

14: Rope reel

20: Lower beam

30: upper beam

40: blade

50: Blade angle adjustment component

66: Ladder Rope

80: The first pull piece

84: second pull piece

Claims (6)

A type of blinds, including: A beam Lower beam A plurality of blades are arranged at intervals between the upper beam and the lower beam; A blade angle adjustment component, with two brackets, a first rotating drum, a second rotating drum, a transmission shaft and two ladder ropes, the brackets are fixed in the upper beam and located on the left and right sides of the upper beam End, the first rotating drum and the second rotating drum are respectively rotatably arranged on a bracket, and the transmission shaft connects the first rotating drum and the second rotating drum so that the one rotating drum and the second rotating drum The tube can rotate synchronously between a first position and a second position. Each ladder rope has a front warp, a back warp and a plurality of wefts connected between the front warp and the back warp. The front warp of the ladder ropes and the back warp of the ladder ropes are located on the front and back sides of the blades, and the top of the front warp of the ladder ropes and the top of the back warp of the ladder ropes are connected to the first turn And the second drum, the bottom ends of the front warp threads of the ladder ropes and the bottom ends of the back warp threads of the ladder ropes are respectively connected to the lower beam, and the weft threads of the ladder ropes respectively carry a blade of the blade On the bottom surface, when the first rotating drum and the second rotating drum are in the first position, the ladder ropes are pulled by the first rotating drum and the second rotating drum to keep the blades in an open state, When the first rotating drum and the second rotating drum are in the second position, the ladder ropes are pulled by the first rotating drum and the second rotating drum to drive the blades to deflect to a closed state; A first pulling member is suspended in front of the blades and connected to the first rotating drum with the top end thereof, so that the first pulling member drives the second rotating drum from the first rotating drum through the first rotating drum. The position is rotated to the second position; and A second pulling member is suspended in front of the blades and connected to the second rotating drum with its top end, so that the second pulling member drives the first rotating drum from the second rotating drum through the second rotating drum. The position is rotated to the first position. The blind according to claim 1, wherein the first drawing member and the second drawing member are both a belt. The blind according to claim 1 or 2, wherein the first drawing member passes around the top surface of the first rotating drum and the rear side of the first rotating drum and is connected to the bottom surface of the first rotating drum, the The second drawing member passes through the bottom surface of the second rotating drum and the rear side surface of the second rotating drum, and is connected to the top surface of the second rotating drum. The blind according to claim 1, wherein the left and right ends of the upper beam each have a perforation, and the first drawing member and the second drawing member respectively pass through the perforation. The blind according to claim 1, wherein the top end of the first drawing member has a first hollow groove, and the first hollow groove accommodates a part of the front and back warp threads of the ladder rope. The blind according to claim 1, wherein the top end of the second drawing member has a second hollow groove, and the second hollow groove accommodates a part of the front and back warp threads of the ladder rope.

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