Tandem multi-roller shutter

Abstract

The invention provides a tandem type multi-roller shutter. The tandem-type multi-roller shutter includes: a weight bar; a first screen window, the lower end of which is connected to the weight bar and the upper end of which is connected to the first winding roller, the first screen window being wound around or unwound from the first winding roller by the rotation of the first winding roller; a first winding bar rotatably coupled to the first winding roller therein; the lower end of the second screen window is connected to the first winding rod, the upper end of the second screen window is connected to the second winding roller, and the second screen window is wound around the second winding roller or unwound from the second winding roller by means of rotation of the second winding roller; and a second winding rod rotatably coupled to the second winding roller therein.

Description

Technical Field

[0001] The present invention relates to a rolling curtain which can be used to roll up or unroll a screen window in the form of a winding roller, and more specifically, to a series-connected multi-rolling curtain which can selectively or simultaneously be used for at least two screen windows continuously connected to each other in a window. Background Art

[0002] Roller blinds are one of the devices installed on windows to block sunlight. Since roller blinds are easier to operate and simpler to set up than traditional curtains or sunshades, they are often used not only in offices but also in homes.

[0003] There are many types of roller blinds, including wooden roller blinds that block sunlight by adjusting the angle of slats, combined roller blinds in the form of double-layer screens with dark and light parts intersecting each other, roller blinds with rolling screens that adjust the amount of light by winding on a winding roller or unwinding, etc. In addition, improved roller blinds (for example, Korean Patent No. 10-0866344, etc.) are also being developed.

[0004] However, conventional roller blinds generally have the following problems: In the past, the structure blocked the window in order to block the sunlight, so when the amount of light was reduced, the window was blocked and the scenery outside the window could not be appreciated.

[0005] On the other hand, when window tinting is performed, since sunlight is not completely blocked, a problem occurs in which a sunshade device such as a roller blind or a curtain needs to be used twice.

[0006] In addition, it is difficult for traditional roller blinds to separate a window, block part of it, dye part of it, and make part of it completely transparent, which makes it difficult to achieve user-customized operation. Therefore, there is also a problem of difficulty in meeting the diverse needs of users, including those with this need.

[0007] Prior art literature

[0008] Patent Literature

[0009] (Patent Document 1) Korean Patent Gazette No. 10-0866344, (2008.10.31) Summary of the invention

[0010] Problem to be solved

[0011] The technical problem of the present invention is proposed to solve this problem, and it provides a series-connected multi-roller blind that can selectively or simultaneously apply at least two types of screens on one window.

[0012] The technical problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by ordinary technicians in this field from the following description.

[0013] Means of solving the problem

[0014] The tandem multi-roller blind of the present invention includes: a weighted rod; a first screen, whose lower end is connected to the weighted rod and whose upper end is connected to the first winding roller, and which is wound around or unwound from the first winding roller by means of the rotation of the first winding roller; a first winding rod, which is internally rotatably combined with the first winding roller; a second screen, whose lower end is connected to the first winding rod and whose upper end is connected to the second winding roller, and which is internally rotatably combined with the second winding roller by means of the rotation of the second winding roller; and a second winding rod, which is internally rotatably combined with the second winding roller.

[0015] The first winding rod may include a torsion spring connected to the first winding roller, which is compressed and generates a first torque by the rotation of the first winding roller. During the rotation, the first torque and the second torque generated in the opposite direction are offset by the load of the first screen window and the weighting rod.

[0016] The first screen window can be automatically fixed in an unwinding or winding state according to the balance between the first torque and the second torque.

[0017] The window frame may further include a position fixing portion, which is disposed on the weighting rod and can fix the weighting rod on one side of the window frame.

[0018] The second winding rod may further include a rotation driving portion which applies a rotation force to the second winding roller to adjust positions of the second screen and the first winding rod.

[0019] The rotation drive portion may include a remotely controllable drive motor.

[0020] The light transmittance of the first screen window and the second screen window may be different.

[0021] Any one of the first screen window and the second screen window may be formed by a light-permeable translucent thin plate, and the other may be formed by an opaque thin plate.

[0022] The translucent sheet may be a transparent film that has been tinted to adjust light transmittance.

[0023] The first screen window may be formed of a translucent thin plate, and the second screen window may be formed of an opaque thin plate.

[0024] Effects of the Invention

[0025] According to the present invention, at least two types of screens are connected continuously on a window to block sunlight or adjust the amount of light. The present invention can also block sunlight with an opaque screen, or bring about a dyeing effect with a translucent screen, or enjoy the scenery outside the window, or completely roll up the screen to allow sunlight to enter directly through the window. In addition, the present invention divides a window longitudinally through the continuously connected screens, blocks part of the window, makes part of it in a dyeing state, and allows part of it to directly transmit light, so that user-customized operation can be achieved. Therefore, the blinds can be used in a variety of ways and can meet the needs of different users in various situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional diagram of the tandem multi-roller blind of the present invention.

[0027] Figure 2 is an example Figure 1 A three-dimensional diagram of the action of the roller blind.

[0028] Figure 3 Yes means Figure 1 A partial cross-sectional view of the internal structure of the first winding rod in the roller blind.

[0029] Figure 4 Yes means Figure 1 A partial cross-sectional view of the internal structure of the second winding rod in the roller blind.

[0030] Figure 5 is an example Figure 1 Action diagram of the operation of the second winding roller of the rolling blind and the second screen.

[0031] Figure 6 and Figure 7 yes Figure 1 Action diagram of the operation of the first winding roller and the first screen of the rolling blind.

[0032] Figure 8 In the state of fixing the weight rod, the steps are shown Figure 1 An action diagram of the rolling shutter action. DETAILED DESCRIPTION

[0033] The advantages and features of the present invention and the methods for achieving these advantages and features will be explained through the attached drawings and the embodiments described in detail below, which will make it clearer. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in different forms. This embodiment is only used to ensure that the disclosure of the present invention is complete and to fully explain the scope of the invention to ordinary technicians in the field. The present invention is only defined by the claims. The same figure numerals refer to the same structural elements throughout the specification.

[0034] Below, we will refer to Figures 1 to 8 The tandem type multi-roller blinds of the present invention are described in detail.

[0035] Figure 1 is a three-dimensional diagram of a series-connected multi-roller blind of the present invention, Figure 2 is an example Figure 1 A three-dimensional diagram of the action of the roller blind.

[0036] refer to Figure 1 In the tandem type multi-roller blind 1 (hereinafter referred to as the roller blind) of the present invention, the first screen 101 and the second screen 201 are connected in series with the first winding rod 100 placed in the middle [the end of one screen is connected to the other screen]. Therefore, the two connected screens can be operated simultaneously by rotating one winding roller [for example, the second winding roller 210].

[0037] However, the winding rollers [the first winding roller 110 and the second winding roller 210] for operating each screen window are independent of each other, so the areas of the first screen window 101 and the second screen window 201 can be adjusted independently. Figure 1 In addition to the states illustrated in the figure, the second screen 201 can be rolled up and only the first screen 101 can be unfolded, or the first screen 101 can be rolled up and only the second screen 201 can be unfolded. The ratio of the first screen 101 and the second screen 201 can be appropriately adjusted for configuration, or both screens can be rolled up to completely expose the window.

[0038] In particular, the first winding roller 110 generates a pair of torques in opposite directions when rotating and maintains balance at all rotation angles, so that it can be easily operated by applying a small force. For example, by applying a small amount of external force to pull the lower end of the first screen 101 (see Figure 6 ), or fix the lower end of the first screen window 101, and pull the upper end (see Figure 2 ), the first screen window 101 can be easily unfolded, and when the external force is removed, the state will be automatically fixed.

[0039] Taking advantage of this, Figure 2 As shown, the lower end of the first screen 101 [i.e., the weighting rod 300] can be fixed on the window frame B, and the second screen 201 can be pulled by the second winding roller 210, and the areas of the first screen 101 and the second screen 201 can be changed at the same time. Since the first screen 101 and the second screen 201 are made of materials with different light transmittances [e.g., a translucent sheet and an opaque sheet], by adjusting the area of ​​the screen, the light (A) shielding effect of the opaque sheet and the tinting effect of the translucent sheet can be achieved at a desired ratio.

[0040] The rolling blind 1 of the present invention is constructed as follows. The rolling blind 1 of the present invention includes a weighted rod 300; a first screen 101, the lower end of which is connected to the weighted rod 300, the upper end of which is connected to the first winding roller 110, and the screen is wound around the first winding roller 110 or unwound from the first winding roller 110 by the rotation of the first winding roller 110; a first winding rod 100, which is rotatably combined with the first winding rod 100 inside; a second screen 201, the lower end of which is connected to the first winding rod 100, the upper end of which is connected to the second winding roller 210, and the screen is wound around the second winding roller 210 or unwound from the second winding roller 210 by the rotation of the second winding roller 210; and a second winding rod 200, which is rotatably combined with the second winding roller inside.

[0041] In one embodiment of the present invention, the first winding rod 100 may include a torsion spring (see Figure 6 110a), the torsion spring is connected to the first winding roller 110, and is compressed and generates a first torque under the rotation of the first winding roller 110 (see Figure 6 T1), when rotating, with the help of the load of the first screen window 101 and the weight rod 300, the first torque and the second torque generated in the opposite direction (see Figure 6 of T2) will cancel each other out.

[0042] Therefore, the first screen window 101 can be automatically fixed in an unwinding or winding state according to the balance between the first torque and the second torque.

[0043] Furthermore, the light transmittances of the first screen window 101 and the second screen window 201 may be different. Either one of the first screen window 101 and the second screen window 201 may be formed by a light-transmitting semi-transparent sheet, and the other one may be formed by an opaque sheet.

[0044] Hereinafter, the structure and effects of the present invention will be described in more detail based on an embodiment of the present invention.

[0045] First, refer to Figures 1 to 4 Describe the structure of the roller blind in detail.

[0046] Figure 3 Yes means Figure 1 A partial cross-sectional view of the internal structure of the first winding rod in the roller blind, Figure 4 Yes means Figure 1 A partial cross-sectional view of the internal structure of the second winding rod in the roller blind.

[0047] like Figure 1As shown, the roller blind 1 of the present invention is a structure in which at least two screens are connected in series. The roller blind 1 of the present invention includes a weighted rod 300 at the bottom, a first screen 101 connected between the weighted rod 300 and the first winding rod 100, and a second screen 201 connected between the first winding rod 100 and the second winding rod 200. In this embodiment, an example of forming the first screen 101 and the second screen 201 is described, but the screen, the winding roller and the winding rod can also be additionally enlarged. For example, a third winding rod (not shown) can be placed on the second winding rod 200, and a third winding roller (not shown) can be formed inside the third winding rod, so that the third screen (not shown) can be connected between the third winding roller and the second winding rod 200. Therefore, the technical idea of ​​the present invention is not limited to this embodiment.

[0048] The structure of the present invention is described in order from bottom to top as follows.

[0049] refer to Figure 1 and Figure 2 The weighting rod 300 is disposed at the bottom of the rolling curtain 1. The weighting rod 300 plays the role of unfolding the first screen 101 by its own gravity. Within the possible scope of this role, the weighting rod 300 can be deformed with a variety of materials and shapes. Therefore, the shape of the weighting rod 300 shown is exemplary.

[0050] Preferably, the weighting rod 300 may be formed as a bar-shaped structure having a length corresponding to the width of the first screen 101 (the width in a direction perpendicular to the screen unfolding direction (gravity direction)). In this embodiment, a position fixing portion 310 is formed on the weighting rod 300 .

[0051] like Figure 2 As shown, the position fixing portion 310 may be formed to be able to fix the weighting rod 300 to one side of the window frame B. For example, the position fixing portion 310 may be composed of a magnet or the like built into the weighting rod 300. By the magnetic force of the magnet, the weighting rod 300 may be fixed to the iron window frame B or the like. However, the position fixing portion is deformable and therefore need not be limited thereto.

[0052] For example, the position fixing portion 310 may be formed on a window frame or the like using another coupling structure that can be detachably coupled to the window frame B using a clamp, a hook, or the like.

[0053] like Figure 1 As shown, in the first screen window 101, the lower end is connected to the weighting rod 300, and the upper end is connected to the first winding roller 110. Therefore, by the rotation of the first winding roller 110, the first winding roller 110 can be wound or unwound. The first winding roller 110 is rotatably coupled to the inside of the first winding rod 100.

[0054] The first screen window 101 and the second screen window 201 have different light transmittances. Specifically, any one of the first screen window 101 and the second screen window 201 can be formed by a light-transmitting translucent sheet, while the other can be formed by an opaque sheet (a material that blocks sight). Preferably, as in this embodiment, the first screen window 101 can be formed by a translucent sheet.

[0055] In this specification, an opaque sheet is made of a material such as fabric that is substantially impermeable to sunlight (or other types of incident light), and refers to a sheet that blocks a person's sight. Since an opaque sheet blocks sight, a person is substantially unable to appreciate the external scenery through the opaque sheet. In contrast, a translucent sheet is made of a material such as a colored or coated light-transmitting film that substantially partially transmits sunlight (or other types of incident light), and refers to a sheet that does not block a person's sight. A translucent sheet adjusts the transmittance of visible light and / or light outside the visible light (ultraviolet light and infrared light) by coloring and / or coating, but does not block sight, so a person can appreciate the external scenery through the translucent sheet.

[0056] Therefore, the first screen 101 composed of a translucent thin plate can transmit light A. However, due to the translucent state, the amount of light transmitted is adjusted, so a common dyeing (tinting) effect is produced. In this specification, dyeing refers to adjusting the amount of light of a material by coloring and / or coating the surface of a light-transmitting material without impairing vision. Therefore, dyeing includes anti-ultraviolet coating and the like to remove or reduce the amount of light transmitted by a specific wavelength without changing the color. The dyeing of this specification can be essentially the same as a common sunscreen.

[0057] The translucent sheet applicable to the first screen 101 may be, for example, a transparent film that has been tinted to adjust the light transmittance. The color of the translucent sheet can be adjusted arbitrarily, and the light transmittance can be changed arbitrarily by adjusting the color or the coating concentration. Therefore, even if the first screen 101 is superimposed on the window, the sight will not be blocked, and only the transmittance or light transmission amount of the light A will be reduced.

[0058] Figure 3 The internal structure of the first winding roller 110 for winding or unwinding the first screen 101 is shown. Figure 3 , the internal structure of the first winding rod 100 on which the first winding roller 110 is provided will be described.

[0059] like Figure 3As shown, the upper end of the first screen 101 is connected to the first winding roller 110. The upper end of the first screen 101 can be closely fixed around the outer periphery of the first winding roller 110 in various ways (e.g., bonding and / or pressurized fixing by a fixing member, etc.). Therefore, when the first winding roller 110 rotates, the first screen 101 is wound around the first winding roller 110 and rolled into the inside of the first winding rod 100, or unwound from the first winding roller 110 and discharged to the lower end of the first winding rod 100.

[0060] The first winding roller 110 is rotatably coupled to the inside of the first winding rod 100. The first winding rod 100 may include a first body 120 having an elongated box shape and a receiving space therein and a first end cap 130 coupled to both ends of the first body 120. Both ends of the first winding roller 110 are rotatably coupled to a shaft formed on the first end cap 130.

[0061] The manner in which the first winding roller 110 is axially coupled to the first winding rod 100 is exemplified as follows. For example, a rotating block 111 may be inserted into both ends of the first winding roller 110. The middle portion of the rotating block 111 may be formed through so that the shaft can pass through, and the first winding roller 110 may be axially coupled to the first end cap 130 through the rotating blocks 111 at both ends.

[0062] The shaft formed on the first end cover 130 can be deformed in various forms as needed. Since a driving structure or the like can be configured inside the winding roller, the shape or structure of the shaft can also be changed corresponding to such a structure. For example, as described in this embodiment, when the spring fixed shaft 113 connected to the first end cover 130 passes through the rotating block 111, the spring fixed shaft 113 can serve as the rotating shaft of the first winding roller 110.

[0063] However, this is only an example, and the shaft structure in other embodiments can be deformed in different forms. For example, the other end of the first winding roller 110 without a spring fixed shaft can also be formed with a rotating shaft of other shapes (not shown) that passes through the rotating block 111 and is connected to the first end cover 130.

[0064] The first winding rod 100 includes a torsion spring 110a connected to the first winding roller 110. The torsion spring 110a may be disposed inside the first winding rod 100, and at least a portion thereof may be inserted into the first winding roller 110. With an appropriate structure, one end of the torsion spring 110a may be fixed to the first winding rod 100, and only the other end may be formed to rotate together with the first winding roller 110.

[0065] The torsion spring 110a is connected to the first winding roller 110, and is compressed and generates a first torque when the first winding roller 110 rotates (see Figure 6By means of the load of the first screen window 101 and the weighting rod 300, a second torque in opposite direction is generated in pairs at the first winding roller 110 (see Figure 6 These torques are precisely adjusted to balance each other (this will be explained in more detail later).

[0066] That is, the torsion spring 110a of the first winding rod 100 is connected to the first winding roller 110, and is compressed and generates a first torque by the rotation of the first winding roller 110. During the rotation, the first torque and the second torque generated in the opposite direction are offset by the load of the first screen 101 and the weighting rod 300. Therefore, the first screen 101 can be automatically fixed in an unwinding or winding state according to the balance between the first torque and the second torque.

[0067] That is, the torsion spring 110a of the first winding rod 100 is formed to accurately offset the second torque that increases or decreases according to the unwinding length of the first screen 101 (for example, as the length of the first screen increases, the load applied by the first screen to the first winding roller also increases, and the torque (i.e., the second torque) acting on the first winding roller in the unwinding direction of the first screen also increases due to the increase in load) to the first torque generated in the opposite direction. Therefore, by balancing the torque, it can be fixed at any position, so that the first screen 101 can be easily operated even if a small external force is applied. This will be described in more detail later.

[0068] One end of the torsion spring 110a is connected to the first end cover 130 and can be fixed without rotation. For example, one end of the torsion spring 110a can be fixed to the spring fixing cover 112, and a spring fixing shaft 113 connecting the spring fixing cover 112 and the first end cover 130 can be formed. As mentioned above, the spring fixing shaft 113 can be formed by passing through the rotating block 111.

[0069] The other end of the torsion spring 110a is connected to the first winding roller 110 and rotates together with the first winding roller 110. Therefore, when the first winding roller 110 rotates, a torsion occurs between one end and the other end of the torsion spring 110a, thereby generating a first torque. For example, the other end of the torsion spring 110a can be fixed inside the first winding roller 110 by inserting and coupling with a snap-in block 114, and can be connected to the first winding roller 110.

[0070] The snap-in block 114 may be formed with a plurality of wings or protrusions on the outside of the cylindrical block, for example. The inner surface of the first winding roller 110 may be formed with a protrusion 110b protruding inward and extending in the length direction so as to be combined with the wings or protrusions of the snap-in block 114. This method may be a concave-convex combination method by inserting the protrusion 110b between the wings or protrusions of the snap-in block 114. By applying a variety of combination methods, the snap-in block 114 can be combined with the first winding roller 110, and the torsion spring 110a caused by the rotation of the first winding roller 110 is caused to be twisted.

[0071] Figure 3 Although the example of using a single torsion spring 110a is shown, in order to generate an appropriate torque, a plurality of torsion springs 110a may be dispersedly arranged at both ends of the first winding roller 110. In this case, the elasticity of the torsion spring 110a may be appropriately adjusted in consideration of the number of torsion springs 110a. In this way, the first winding rod 100 connecting the first winding roller 110 and the torsion spring 110a may be formed.

[0072] The second screen 201 is connected to the upper portion of the first winding rod 100 .

[0073] refer to Figure 1 In the second screen window 201, the lower end is connected to the first winding rod 100, and the upper end is connected to the second winding roller 210. Therefore, by the rotation of the second winding roller 210, the second winding roller 210 can be wound or unwound. The second winding roller 210 is rotatably coupled to the inside of the second winding rod 200.

[0074] The lower end of the second screen window 201 is fixed to the first body of the first winding rod 100 (see Figure 3 120) so that it is not affected by the rotation of the first winding roller 110.

[0075] As mentioned above, the second screen 201 can be formed by an opaque sheet. The opaque sheet is not necessarily limited thereto, and can be formed by, for example, fabric, etc. The opaque second screen 201 can block the light A, so when the second screen 201 is superimposed on the window, the sight will be blocked. In order to increase the light (A) blocking effect, the second screen 201 can be unwound from the second winding roller 210 to extend the length of the second screen 201.

[0076] Figure 4 The internal structure of the second winding roller 210 for winding or unwinding the second screen window 201 is shown. Figure 4 , the internal structure of the second winding rod 200 on which the second winding roller 210 is provided will be described.

[0077] like Figure 4As shown, the upper end of the second screen 201 is connected to the second winding roller 210. The upper end of the second screen 201 can be closely fixed around the outer periphery of the second winding roller 210 in various ways (e.g., bonding and / or pressurized fixing by a fixing member, etc.). Therefore, when the second winding roller 210 rotates, the second screen 201 is wound around the second winding roller (210) and rolled into the interior of the second winding roller (210), or unwound from the second winding roller 210 and discharged to the lower end of the second winding rod 200.

[0078] The second winding roller 210 is rotatably coupled to the interior of the second winding rod 200. The coupling structure of the second winding roller 210 and the second winding rod 200 may be similar to the coupling structure of the first winding roller 110 and the first winding rod 100 described above. Based on the coupling structure of the first winding roller and the first winding rod described above, the coupling structure of the second winding roller 210 and the second winding rod 200 is described as follows.

[0079] The second winding rod 200 may include a second body 220 with a hollow interior and an elongated box shape and a second end cap 230 coupled to both ends of the second body 220. Both ends of the second winding roller 210 are rotatably coupled to a shaft formed on the second end cap 230. In order to embed an opaque (relatively thick due to the material) second screen 201, the second winding rod 200 may be formed slightly larger than the first winding rod 100.

[0080] The manner in which the two ends of the second winding roller 210 are axially coupled to the second winding rod 200 is exemplified as follows. Rotating blocks 211 may be inserted into the two ends of the second winding roller 210, and the middle portion of the rotating block 211 may be formed through so that the shaft can pass through. Therefore, the second winding roller 210 may be axially coupled to the second end cap 230 through the rotating blocks 211 at the two ends.

[0081] The shaft formed on the second end cover 230 can be deformed in various forms as needed. Since a driving structure or the like can be configured inside the winding roller, the form or structure of the shaft can also be changed corresponding to the structure. For example, as described in the present embodiment, when the motor fixed shaft 214 and the spring fixed shaft 218 are respectively configured to pass through the rotating blocks 211 at both ends, the motor fixed shaft 214 and the spring fixed shaft 218 can be used as the rotating shaft of the second winding roller 210.

[0082] The second winding rod 200 may include a rotation driving portion 210a that applies a rotational force to the second winding roller 210. The rotation driving portion 210a applies a rotational force to the second winding roller 210, thereby simultaneously adjusting the positions of the second screen 201 and the first winding rod 100 connected to the lower end of the second screen 201. Since the second winding rod 200 may be relatively high, the rotation driving portion 210a may be remotely operated.

[0083] Preferably, the rotation driving part 210a may include a remotely controllable driving motor 212. The driving motor 212 may be controlled by, for example, a wired or wireless remote controller (not shown). In addition, a battery (not shown) for supplying power to the driving motor 212 may also be configured on one side of the second winding rod 200.

[0084] However, this is not limited to this. In other embodiments, the rotation drive unit may also include other structures that can be remotely operated (for example, it may be a structure connected to the operating rope-second winding roller through a gear). The drive motor may also be configured in parallel with other structures. A variety of drive structures can be used to drive the second winding roller 210.

[0085] The driving motor 212 may be connected and fixed to the second end cover 230. For example, the body of the driving motor 212 may be combined with the motor fixing cover 213, and a motor fixing shaft 214 may be formed to connect the motor fixing cover 213 and the second end cover 230 for fixing. As described above, the motor fixing shaft 214 may pass through the rotating block 211.

[0086] The shaft of the driving motor 212 is connected to the second winding roller 210. Therefore, the rotational force of the driving motor 212 can be applied to the second winding roller 210. The shaft of the driving motor 212 can be connected to the second winding roller 210 through a snap-in block 215 fixed to the inside of the second winding roller 210 in an insertion-combined manner. The shaft of the driving motor 212 can be connected to a reducer that can perform functions such as torque conversion, and the driving motor 212 can also form such a reducer in one piece.

[0087] On the other hand, an auxiliary force generating part 210b may be additionally provided on the second winding roller 210, for accumulating elastic energy during rotation and assisting rotation by the accumulated elastic capacity. The auxiliary force generating part 210b includes an elastic body, so its shape may be similar to the aforementioned torsion spring, but there is a difference because it is used for the purpose of accumulating a certain amount of elastic energy during rotation.

[0088] The auxiliary force generating portion 210 b may include an auxiliary spring 216 , and the auxiliary spring 216 may be formed to accumulate elastic energy by twisting.

[0089] One end of the auxiliary spring 216 is connected to the second end cover 230 and can be fixed without rotation, and the other end is connected to the second winding roller 210 and may be twisted. For example, a spring fixing cover 217 can be combined with one end of the auxiliary spring 216 to form a spring fixing shaft 218 connecting the spring fixing cover 217 and the second end cover 230. The spring fixing shaft 218 can pass through the rotating block 211. The other end of the auxiliary spring 216 can be connected to the second winding roller 210 through a snap-in block 219 fixed to the inside of the second winding roller 210 by insertion.

[0090] The snap-in blocks 215 and 219 applicable to the auxiliary spring 216 and the drive motor 212 may be substantially of the same structure. Each snap-in block 215 and 219 may be formed with a plurality of wings or protrusions on the outside of the cylindrical block. A protrusion 210c protruding inwardly and extending in the length direction may be formed on the inner surface of the second winding roller 210 so as to be combined with the wings or protrusions of each snap-in block 215 and 219. By this combination, one side of the drive motor 212 and one side of the auxiliary spring 216 may be connected to the second winding roller 210, respectively.

[0091] With this structure, a tandem type multi-roller blind 1 including the first winding rod 100, the second winding rod 200, and the first screen 101 and the second screen 201 connected therebetween can be formed.

[0092] Figure 5 is an example Figure 1 Action diagram of the operation of the second winding roller of the roller blind and the second screen window, Figure 6 and Figure 7 yes Figure 1 Action diagram of the operation of the first winding roller and the first screen of the rolling blind.

[0093] With the above structure, the first screen window and the second screen window can be operated as follows. Figure 5 The unfolded length of the second screen window 201 can be adjusted by utilizing the rotary drive unit 210a. Figure 5 As shown, by rotating the aforementioned driving motor 212 in one direction, a rotational force is applied to the second winding roller 210, and the second winding roller 210 rotates and can wind up the second screen 201. Figure 5 2 shows the action of the second winding roller 210 winding the second screen 201. However, if the rotation direction of the driving motor 212 is changed to the reverse direction, the second screen 201 will be unwound and the length will be extended.

[0094] As such, the second winding rod 200 can be operated by the rotation driving part 210a that actively applies a rotational force to the second winding roller 210. When the second winding roller 210 rotates, the second screen 201 is raised and lowered, and the position of the first winding roller 110 connected to the lower end of the second screen 201 is also changed accordingly.

[0095] Therefore, if Figure 5 As shown, by rotating the second winding roller 210, the second screen 201, the first winding rod 100 and the first screen 101 connected to the first winding rod 100 can be operated simultaneously. As described later, if the weighting rod 300 at the end of the first screen 101 is not additionally fixed, the first screen 101 and the second screen 201 can be raised and lowered simultaneously by driving the second winding roller 210.

[0096] On the other hand, reference Figure 6 and Figure 7 The first screen 101 can be operated more easily by utilizing a pair of the first torque T1 and the second torque T2 generated by the rotation of the first winding roller 110 and offsetting each other to maintain a balanced force. Figure 6 As shown, by gently pulling the weighting rod 300 at the lower end of the first screen 101 with hand C, the first screen 101 can be easily unwound from the first winding roller 110 while maintaining the torque balance. During the unwinding process, the first torque T1 and the second torque T2 can be offset in opposite directions at the same time, and the force balance can be maintained.

[0097] Therefore, the user does not need to continuously pull the weighting rod 300 with hand C. The user only needs to release hand C after unwinding the first screen 101 to the required length. The balance between the first torque T1 and the second torque T2 will result in a state of substantially no external force, so that the first screen 101 is automatically fixed in the unwinding state.

[0098] When operating the first screen 101, the change of torque can be described as follows. Figure 6 As shown in (b), since the unwinding length of the first screen 101 is extended, the second torque T2 acting on the lower side of the first screen 101 is also increased. Figure 6 As shown in (a), by the same rotation, the torsion spring 110a is compressed, so the first torque T1 (torque based on the restoring force proportional to the compression of the torsion spring) opposite to the second torque T2 also increases at the same time. Therefore, the first torque T1 offsets the second torque T2 to achieve a balance of forces, and the first screen 101 automatically stops at this position.

[0099] The balance of torque does not only occur at a specific position, but occurs at all angles of rotation of the first winding roller 110. Therefore, even if the position changes, the magnitude of the torques that cancel each other out will increase or decrease, but at any position, the first screen 101 will automatically stop.

[0100] The offset of the first torque T1 and the second torque T2 can be achieved through the following principle.

[0101] The magnitude of the first torque T1 is proportional to the degree of compression of the torsion spring 110a, and the compression of the torsion spring 110a is proportional to the rotation angle of the first winding roller 110 (the angle at which the first winding roller 110 rotates around the rotation center). Therefore, the first torque T1 can be ultimately determined as a value obtained by multiplying the rotation angle by a specific proportional constant. It is usually assumed that there is an initial value of the torque, which can be expressed as a linear equation (rotation angle) × (first proportional constant) + (first torque initial value).

[0102] On the other hand, the magnitude of the second torque T2 is the product of the load applied by the first screen 101 on the side of the first winding roller 110 and the radius of the first winding roller 110 (equivalent to the arm of the torque) (although it is vector multiplication, since the first screen is applied in a tangential direction (a direction perpendicular to the radius) on the side of the first winding roller, this value is a value obtained by general multiplication). It is the result of adding the torque of the first screen 101 and the torque of the weighting rod 300 which is a constant.

[0103] At this time, assuming that the width, density, thickness of the first screen 101, and the radius of the first winding roller 110 are constants (these are almost unchanged under normal circumstances), the load applied by the first screen 101 is proportional to the length of the first screen 101 unrolled (proportional to the length, the mass increases, and the load increases in proportion to the mass). According to the radian method, the length of the first screen 101 unrolled [= (radius of the first winding roller) × (rotation angle)] is again proportional to the rotation angle of the first winding roller 110, so the second torque T2 can also be expressed as a linear equation of the rotation angle multiplied by a specific proportional constant, plus a constant equivalent to the value of the weighting rod torque. It can be expressed as (rotation angle) × (second proportional constant) + (weighting rod torque).

[0104] More specifically, referring to the known torque formula of the torsion spring 110a, the first torque T1 can be obtained as follows: (rotation angle)×[(wire diameter of torsion spring) 4 × (Young's modulus of torsion spring)] / [64×(diameter of torsion spring)×(number of windings of torsion spring)]+(first torque initial value). Therefore, the (first proportional constant) can be adjusted to a desired value by the user (manufacturer) by adjusting the wire diameter, Young's modulus, diameter, and number of windings of the torsion spring.

[0105] Moreover, the second torque T2=(torque of the first screen)+(torque of the weighting rod), and (torque of the first screen)=(radius of the first winding roller)×(load of the first screen of unwinding), and (load of the first screen of unwinding)=(length of the first screen of unwinding)×(density of the first screen)×(width of the first screen)×(thickness of the first screen)×(acceleration of gravity), and (length of the first screen of unwinding)=(rotation angle)×(radius of the first winding roller), so the second torque T2=(rotation angle)×(radius of the first winding roller) can be obtained. 2 × (first screen density) × (first screen width) × (first screen thickness) × (gravitational acceleration) + (weighting rod torque). Therefore, the (second proportional constant) can be adjusted to a desired value by the user (manufacturer) by adjusting the radius of the first winding roller and the density, width and thickness of the first screen.

[0106] Moreover, the torque of the weighting rod [= (weighting rod load) × (radius of the first winding roller)] is also a constant value that is proportional to the load of the weighting rod. Therefore, the user (manufacturer) can obtain the required value and adjust the initial value of the first torque by using an appropriate torsion spring (the above rotation angles are all the rotation angles of the first winding roller).

[0107] Therefore, the first torque T1 = (rotation angle) × (first proportional constant) + (first torque initial value), and the second torque T2 = (rotation angle) × (second proportional constant) + (weight rod torque). Both the first torque T1 and the second torque T2 can be expressed as linear functions related to the rotation angle of the first winding roller 110, and the first proportional constant, the second proportional constant, the weight rod torque and the first torque initial value can also be adjusted to the desired values. Therefore, by adjusting the first proportional constant, the second proportional constant, the weight rod torque and the first torque initial value, the manufacturing variables (wire diameter of the torsion spring, Young's modulus, diameter, number of windings, radius of the first winding roller, density, width, thickness of the first screen, load of the weight rod and the first torque initial value) can be adjusted to appropriate values, so that the equation of the first torque T1 = the second torque T2 holds.

[0108] In this way, after adjusting several variables, the first torque T1 and the second torque T2 can be offset with substantially equal magnitude at all rotation angles.

[0109] At this time, the first proportional constant and the second proportional constant correspond to the slope of the linear function, respectively. Therefore, if the first proportional constant and the second proportional constant are made consistent, the increase ratio of the first torque T1 (for the rotation angle) and the increase ratio of the second torque T2 (for the rotation angle) will be the same, so that the first torque T1 and the second torque T2 can be made consistent more accurately when the rotation angle changes. In addition, the weighting rod torque can be used as an initial value of the second torque, which is used to adjust the starting values ​​of the first torque T1 and the second torque T2 to be consistent.

[0110] In this way, no matter what the rotation angle of the first winding roller 110 is, the first torque T1 and the second torque T2 can be made consistent, so no matter what the first screen window 101 is in Figure 6 The unwinding state shown is still as Figure 7 In the winding state shown, the first torque T1 can offset the second torque T2, so that it stops naturally in this state.

[0111] However, if Figure 7As shown, when the first screen 101 is pushed upward and wound, the unwinding length of the first screen 101 will be reduced, thereby reducing the load applied to the first screen 101, and the magnitude of the second torque T2 will also be reduced. The rotation angle of the first winding roller 110 is reduced, causing the torsion spring 110a to relax, and the magnitude of the first torque T1 that offsets the second torque T2 is also reduced accordingly. This is the only difference.

[0112] Therefore, the user only needs to apply a very small external force to easily unwind the first screen 101 from the first winding roller 110, or to wind the first screen 101 around the first winding roller 110. In addition, since the first screen 101 is automatically fixed at the position by the balance of torque at all parts of the adjustment position, no additional fixing mechanism is required.

[0113] By using this structure, the present invention can automatically adjust the ratio of the first screen 101 to the second screen 201 while fixing the weight rod 300 as follows. Figure 8 , giving an example to illustrate the operation of fixing the state of the weight rod.

[0114] Figure 8 In the state of fixing the weight rod, the steps are shown Figure 1 An action diagram of the rolling shutter action.

[0115] refer to Figure 8 The weighting rod 300 can be fixed to the window frame B by the aforementioned position fixing portion 310. However, in the absence of a position fixing portion, the following operation can also be performed by placing a heavy object on the weighting rod 300 or by holding the weighting rod 300 by a person.

[0116] For example, Figure 8 As shown in (a), the weighting rod 300 is first fixed, and the second screen 201 is unrolled to be longer than the first screen 101. This initial state is for illustration and example, and therefore need not be limited thereto.

[0117] In this state, if Figure 8 As shown in (b), the second winding roller 210 is driven to unwind the second screen 201, and the first winding rod 100 also rises accordingly. At this time, the weighting rod 300 is in a fixed state, so as the first winding rod 100 rises, the first screen 101 is opened wider.

[0118] That is, by fixing the weighting rod 300 and driving the second winding roller 210, the unfolded length of the second screen 201 can be shortened while the unfolded length of the first screen 101 can be increased. In this case, whether the first screen 101 is unwinding or winding, the first torque T1 and the second torque T2 will increase by the same amount and offset each other to maintain balance. Therefore, the first screen 101 maintains its unfolded length.

[0119] Therefore, if Figure 8 As shown in (c), the first winding rod 100 can be raised or Figure 8 As shown in (a), the first winding rod 100 is lowered to adjust the first screen 101 to different lengths. Since the second winding roller 210 is driven by the aforementioned rotation drive unit, the ratio of the first screen 101 to the second screen 201 can be changed simultaneously by adjusting the rotation drive unit while the weighting rod 300 is fixed.

[0120] In this way, Figure 8 As shown in (a), the area of ​​the second screen window 201 overlapping the window can be enlarged, and the second screen window 201 formed by an opaque thin plate can be used to block the light A entering the window. Figure 8 As shown in (c), the area of ​​the first screen window 101 overlapping the window can be enlarged, and the first screen window 101 formed by the translucent sheet can be used to reduce the amount of light, and the external scenery can also be enjoyed. Figure 8 As shown in (b), the areas of the first screen 101 and the second screen 201 are adjusted at an appropriate ratio, thereby maintaining appropriate lighting required by the user.

[0121] Furthermore, this is not limited to this. If the weighting rod 300 is separated from the window frame B and the second winding roller 210 is driven, the first screen 101 and the second screen 201 can be raised and lowered at the same time, so that a part of the window can be fully exposed. Moreover, whether the second screen 201 is in a fixed state or a mobile state, the first screen 101 can be operated at any time by a simple touch, so the user can operate the first screen 101 at the desired time, thereby shortening or extending the length. In this way, the needs of different users can be met in various situations, and the blinds can be used in a variety of ways.

[0122] The embodiments of the present invention are described above with reference to the accompanying drawings, but those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing its technical ideas or essential features. Therefore, it should be understood that the embodiments described above are exemplary in all aspects and not restrictive.

[0123] Industrial Applicability

[0124] The invention is applicable to at least two continuously connected screen windows on one window, which can block sunlight or adjust the amount of light.

[0125] And, you can use opaque screens to block out the sun, translucent screens to provide a tinted effect while still enjoying the view outside, or you can roll up the entire screen completely and allow the sun to pass through.

[0126] Furthermore, by dividing a window longitudinally with continuously connected screens, a portion of the window can be blocked, a portion can be given a tinting effect, or sunlight can be allowed to pass through a portion, thus achieving customized operation.

[0127] These effects can be achieved by applying the present invention in buildings having windows, and are applicable to buildings for various purposes, such as work spaces, living spaces, etc., thereby being able to obtain a variety of effects including the above-mentioned effects.

[0128] Therefore, the present invention has high industrial applicability because it can be used in buildings and all industries related to the interior space of buildings.

Claims

1. A series-connected multi-roller blind, characterized in that: include: Weighted rod; A first screen window, the lower end of which is connected to the weighted rod, the upper end of which is connected to the first winding roller, and is wound on or unwound from the first winding roller by the rotation of the first winding roller; a first winding rod rotatably coupled to the first winding roller internally; A second screen window, the lower end of which is connected to the first winding rod, the upper end of which is connected to the second winding roller, and is wound on the second winding roller or unwound from the second winding roller by the rotation of the second winding roller; as well as The second winding rod is internally rotatably coupled to the second winding roller.

2. The tandem type multi-roller blind according to claim 1, characterized in that: The first winding rod includes a torsion spring, which is connected to the first winding roller. The torsion spring is compressed and generates a first torque by the rotation of the first winding roller. During the rotation, the first torque and the second torque generated in the opposite direction are offset by the load of the first screen window and the weighting rod.

3. The tandem type multi-roller blind according to claim 2, characterized in that: The first screen window is automatically fixed in an unwinding or winding state according to a balance between the first torque and the second torque.

4. The tandem type multi-roller blind according to claim 3, characterized in that: It also includes a position fixing portion, which is configured on the weighting rod and can fix the weighting rod on one side of the window frame.

5. The tandem type multi-roller blind according to claim 4, characterized in that: The second winding rod further includes a rotation driving portion that applies a rotational force to the second winding roller to adjust positions of the second screen window and the first winding rod.

6. The tandem type multi-roller blind according to claim 5, characterized in that: The rotation driving unit includes a remotely controllable driving motor.

7. The tandem type multi-roller blind according to claim 1, characterized in that: The first screen window and the second screen window have different light transmittances.

8. The tandem type multi-roller blind according to claim 7, characterized in that: Any one of the first screen window and the second screen window is formed by a light-permeable translucent thin plate, and the other is formed by an opaque thin plate.

9. The tandem type multi-roller blind according to claim 8, characterized in that: The translucent sheet is a transparent film that has been dyed to adjust the light transmittance.

10. The tandem type multi-roller blind according to claim 8, characterized in that: The first screen window is formed by a translucent thin plate, and the second screen window is formed by an opaque thin plate.

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