Electric curtain rails and electric curtain rail systems

Abstract

To provide an electric curtain rail that can simplify wiring for a power supply when a plurality of electric curtains are provided in parallel.SOLUTION: An electric curtain rail according to the present invention comprises a curtain rail, a runner, a driving unit, and a power branching unit. The runner is supported by the curtain rail. The driving unit comprises driving means, and a cover covering the driving means, and is arranged so as to extend downward from the curtain rail. The driving means can move the runner along the curtain rail. The power branching unit comprises an input side terminal, an output side terminal, and a cord electrically connecting the terminals and the driving unit, and is constituted so as to branch power inputted from the input side terminal to output it to the output side terminal and the driving unit. The power branching unit is attached to the cover.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to an electric curtain rail and an electric curtain rail system including a plurality of electric curtain rails. [Background technology]

[0002] Conventionally, there are electric curtain rails that can hang and support curtain fabric and automatically open and close the curtain fabric. For example, Patent Document 1 discloses an electric curtain rail that has an endless transport belt hung inside the curtain rail, and is configured to open and close the curtain fabric by moving the leading runner left and right by moving the transport belt forward and backward using the driving force of a motor unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-172931 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, the installation of electric curtains has become more diverse, and it is becoming common to install multiple electric curtains side by side. However, when multiple electric curtains are installed side by side, if a power cable is installed for each electric curtain rail and connected to an outlet, the power cables can become cumbersome.

[0005] The present invention has been made in view of the above circumstances, and provides an electric curtain rail that can simplify the power wiring when multiple electric curtains are installed side by side. [Means for solving the problem]

[0006] According to the present invention, there is provided an electric curtain rail comprising a curtain rail, a runner, a drive unit, and a power branch unit, the runner being supported by the curtain rail, the drive unit comprising a drive means and a cover covering the drive means and being arranged to extend downward from the curtain rail, the drive means being able to move the runner along the curtain rail, the power branch unit comprising an input terminal, an output terminal, and a cord electrically connecting these terminals and the drive unit, and configured to branch and output power input from the input terminal to the output terminal and the drive unit, and the power branch unit being attached to the cover.

[0007] According to the present invention, when multiple electric curtains are installed side by side, the drive units of each electric curtain rail can be electrically connected using a power branch unit, without having to connect a power cable to each electric curtain rail. Also, because the power branch unit is attached not to the curtain rail but to the cover of the drive unit below it, it is possible to easily connect the power cable and branch cables for connecting to other electric curtain rails.

[0008] Various embodiments of the present invention will be described below as examples, and the embodiments shown below can be combined with each other.

[0009] Preferably, the power distribution unit is attached to the cover so that its longitudinal direction intersects with the longitudinal direction of the curtain rail.

[0010] Preferably, the device comprises a pair of left and right pulleys and an endless transport belt, the transport belt being looped around the pair of pulleys, the drive means being a drive motor configured to rotate the pulleys, and the runner being configured to move left and right as the transport belt moves forward and backward when driven by the drive motor.

[0011] Preferably, the device is provided with a left pulley case and a right pulley case that rotatably support the pair of pulleys, and a cable holding mechanism is formed in each of the left pulley case and the right pulley case, and the cable holding mechanism is configured to hold a branch cable that connects the output side terminal and the input side terminal of an adjacent electric curtain rail.

[0012] Preferably, the input terminal and the output terminal are arranged to face in the same direction.

[0013] Preferably, the power supply distribution unit includes a case having an opening in the same direction as at least the input terminals and the output terminals.

[0014] Furthermore, according to the present invention, there is provided an electric curtain rail system comprising a first electric curtain rail having the above-mentioned electric curtain rail, and a second electric curtain rail having the above-mentioned electric curtain rail, further comprising a power cable and a branch cable, wherein the power cable is connected to the input terminal of the first electric curtain rail, one end of the branch cable is connected to the output terminal of the first electric curtain rail, and the other end of the branch cable is connected to the input terminal of the second electric curtain rail. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view showing an electric curtain rail 1 according to an embodiment of the present invention. [Figure 2] FIG. 2 is a front view showing an electric curtain 100 configured by attaching a curtain fabric 102 to the electric curtain rail 1 of FIG. [Figure 3] FIG. 2 is a plan view of the electric curtain rail 1 of FIG. [Figure 4] 4 is an enlarged view of a main part in the vicinity of where the leading runner 3A is arranged in the plan view of FIG. 3. FIG. [Figure 5] FIG. 5 is an end view taken along line AA in FIG. 4. [Figure 6]2 is a block diagram showing the configuration of a motor unit 4 and a power supply branch unit 5 of the electric curtain rail 1 of FIG. 1. FIG. [Figure 7] 2 is an explanatory diagram showing how a power distribution unit 5 is attached to the electric curtain rail 1 of FIG. 1. FIG. [Figure 8] 8A and 8B are explanatory diagrams showing how the input terminal 50 of the power supply branch unit 5 in FIG. 6 is connected to the power cable 103, and how the output terminal 51 is connected to the branch cable 104. FIG. [Figure 9] 9A and 9B are explanatory diagrams showing how the input terminal 50 and the branch cable 104 of the power supply branch unit 5 of FIG. 6 are connected, and how the output terminal 51 and the branch cable 104 are connected. [Figure 10] 10A and 10B are explanatory diagrams showing a state in which only the input terminal 50 of the power supply branch unit 5 of FIG. 6 and the branch cable 104 are connected. [Figure 11] 2 is a plan view showing a right pulley case 63 of the electric curtain rail 1 of FIG. 1. FIG. [Figure 12] 2 is a perspective view showing a left pulley case 64 of the electric curtain rail 1 of FIG. 1. FIG. [Figure 13] 1 is a perspective view showing two electric curtain rails 1 according to an embodiment of the present invention arranged side by side on the left and right. [Figure 14] 1 is a perspective view showing two electric curtain rails 1 according to an embodiment of the present invention, arranged side by side at the front and rear. [Figure 15] 1 is an explanatory diagram showing four electric curtain rails 1 according to an embodiment of the present invention arranged side by side in the front and rear and on the left and right. DETAILED DESCRIPTION OF THE INVENTION

[0016] The following describes embodiments of the present invention. The various features shown in the following embodiments can be combined with each other. Furthermore, each feature can be an independent invention.

[0017] 1. Configuration of electric curtain rail 1 As shown in Figure 1, an electric curtain rail 1 according to one embodiment of the present invention comprises a curtain rail 2, a leading runner 3A and a plurality of subordinate runners 3B as runners, a motor unit 4 as a drive unit, a power supply branch unit 5, and a transport means 6 (see Figure 6).

[0018] Here, in this specification, the upper and lower sides of the figure relative to the front of the electric curtain rail 1 shown in Fig. 1 are defined as the upward direction (or upper side) and downward direction (or lower side), respectively, in accordance with the hanging direction of the curtain fabric 102 (see Fig. 2). Furthermore, the left-right direction in Fig. 1, in other words, the longitudinal direction of the curtain rail 2, is defined as the left side and right side (see also Fig. 3). Additionally, the side viewed in Fig. 1 is defined as the front side (or indoor side), and the opposite side is defined as the rear side (or outdoor side). Below, each component of the electric curtain rail 1 of the above-mentioned embodiment will be described in detail.

[0019] The curtain rail 2 is fixed to a mounting surface (such as a window frame, wall, or ceiling) of a building or the like by multiple (two in FIG. 1) brackets 101. A leading runner 3A and a trailing runner 3B are supported on the curtain rail 2 so that they can move left and right. A right pulley case 63 is attached to the right end of the curtain rail 2, and a left pulley case 64 is attached to the left end of the curtain rail 2. The configurations of the right pulley case 63 and left pulley case 64 will be described later.

[0020] As shown in Fig. 4, the leading runner 3A includes a main body 30, a running roller 31, a runner arm 32, and a belt joint 33. The main body 30 is formed in the shape of a thin plate, and has the running roller 31, runner arm 32, and belt joint 33 attached to it. The running roller 31 is rotatably supported by the main body 30, and is capable of running in the left-right direction along the bottom edge 20 of the curtain rail 2 shown in Fig. 5. The runner arm 32 supports and suspends the left end of the curtain fabric 102, and is formed by bending a long, thin plate-like member so as to support the curtain fabric 102 at a position forward and to the left of the main body 30.

[0021] The belt joint 33 is configured to be fixed to a transport belt 62 of the transport means 6 (described later) by clamping the transport belt 62 from the front and rear. With this configuration, the leading runner 3A moves left and right along the curtain rail 2 as the transport belt 62 moves forward and backward due to the drive of a drive motor 42 of a motor unit 4 (described later).

[0022] The multiple subordinate runners 3B are supported on the curtain rail 2 at a position to the right (toward the motor unit 4) of the lead runner 3A. The subordinate runners 3B also have running rollers 31 (not shown) similar to those of the lead runner 3A, and are able to run left and right along the curtain rail 2. As shown in FIG. 2, a curtain fabric 102 is suspended from the lead runner 3A and the subordinate runners 3B, and the curtain fabric 102 opens and closes as the lead runner 3A moves left and right. By suspending the curtain fabric 102 from the electric curtain rail 1, an electric curtain 100 is constructed that can electrically open and close the curtain fabric 102.

[0023] As shown in Fig. 1, the motor unit 4 is disposed so as to extend downward from the right end of the curtain rail 2. As shown in the block diagram of Fig. 6, the motor unit 4 includes a power supply board 40, a control board 41, a drive motor 42 as a drive means, an encoder 43, and a cover 44 (see Fig. 1).

[0024] Power supply board 40 converts AC power supplied via power cable 103 and power distribution unit 5 into DC power. This DC power operates drive motor 42, control board 41, encoder 43, etc. Control board 41 stores a program required for control, and electric curtain rail 1 operates in accordance with this program. Control board 41 can also communicate with an operation unit (not shown) via a wired or wireless connection, allowing the user to control the operation of electric curtain rail 1 via the operation unit.

[0025] The drive motor 42 rotates the output shaft 45 using the supplied power. The output shaft 45 is connected to a right pulley 60 of the transfer means 6, which will be described later. The encoder 43 detects the rotation angle of the output shaft 45. The control board 41 of this embodiment acquires the rotation angle of the output shaft 45 to detect the position of the leading runner 3A, i.e., the open / closed state of the curtain fabric 102.

[0026] The cover 44 is formed in a cylindrical shape with a bottom and a substantially rectangular cross section, and the upper end of the cover 44 is attached to the right pulley case 63. The cover 44 holds the above-mentioned power supply board 40, control board 41, drive motor 42, and encoder 43 inside. As shown in FIG. 7 , the cover 44 of this embodiment has a pair of upper and lower mounting holes 44b on its left side wall 44a for mounting the power supply branch unit 5.

[0027] As shown in FIGS. 6 to 10B, the power supply branch unit 5 includes an input terminal 50, an output terminal 51, a connection cord 52, and a case 53 (see FIGS. 7 to 10B). The input terminal 50 is a female terminal and is configured to be connectable to a male terminal 103b of a power cable 103 shown in FIG. 8A or a male terminal 104b of a branch cable 104 shown in FIGS. 9A and 10A. The output terminal 51 is a male terminal and is configured to be connectable to a female terminal 104a of the branch cable 104 shown in FIG. 9A. In this embodiment, the input terminal 50 and the output terminal 51 are arranged to face in the same direction, specifically, upward, as shown in FIGS. 8A, 9A, and 10A.

[0028] Here, power cable 103 has power plug 103a at one end for connecting to a power outlet that supplies commercial power, and male terminal 103b at the other end. The motorized curtain rail 1 of this embodiment receives power from the outlet via power cable 103. Branch cable 104 has female terminal 104a at one end and male terminal 104b at the other end. Branch cable 104 is used to distribute power from one motorized curtain rail 1 to another. Note that female terminals cannot be connected to each other, and male terminals cannot be connected to each other, making it possible to prevent incorrect wiring.

[0029] The connection cord 52 electrically connects the input terminal 50, the output terminal 51, and the power supply board 40 of the motor unit 4. Specifically, the connection cord 52 is configured as a branched wiring, with one end connected to the input terminal 50 and the other end branching and connected to the output terminal 51 and the power supply board 40. With this configuration, the power supply branch unit 5 of this embodiment branches and outputs power input from the input terminal 50 to the output terminal 51 and the power supply board 40 of the motor unit 4.

[0030] 1 and 7, the case 53 is formed in a box shape that is open in one direction (to the right when attached to the motor unit 4). The case 53 has a left wall 53a, a front wall 53b, a rear wall 53c, an upper wall 53d, and a lower wall 53e. The left wall 53a, the front wall 53b, and the rear wall 53c are shaped like plates that are long in the vertical direction, and therefore, the case 53 in this embodiment is configured so that the vertical direction is the longitudinal direction.

[0031] A pair of upper and lower fixed shafts 53f are provided from the center of the left wall 53a toward the right, as shown in Fig. 7. The tips of the fixed shafts 53f have a snap-fit ​​shape, and by fitting them into mounting holes 44b formed in the left wall 44a of the cover 44 of the motor unit 4, the power distribution unit 5 (case 53) can be attached to the cover 44 of the motor unit 4.

[0032] 1, when the case 53 is fixed to the motor unit 4, the left side wall 44a of the motor unit 4 and the left wall 53a of the case 53 are arranged substantially parallel to each other. With this arrangement, the power distribution unit 5 is attached to the motor unit 4 so that its longitudinal direction (i.e., the up-down direction) intersects with the longitudinal direction (i.e., the left-right direction) of the curtain rail 2, specifically, is perpendicular to it.

[0033] 1, 7, and 8A to 10B, upper wall 53d is provided with opening 53g for pulling out power cable 103, branch cable 104, and connection cord 52. In this embodiment, opening 53g is provided in upper wall 53d so as to coincide with the direction of input terminal 50 and output terminal 51. Therefore, opening 53g is provided at an upward position in case 53.

[0034] The transport means 6 is configured to transmit the driving force of the drive motor 42 of the motor unit 4 to move the leading runner 3A left and right. Specifically, as shown in Fig. 6, the transport means 6 includes a right pulley 60 and a left pulley 61 as a pair of left and right pulleys, and a transport belt 62. The right pulley 60 is provided at the right end of the curtain rail 2, and the left pulley 61 is provided at the left end of the curtain rail 2. The right pulley 60 is rotatably supported by a right pulley case 63 (see Figs. 1 and 11) so that its rotation axis is vertical, and the left pulley 61 is rotatably supported by a left pulley case 64 (Figs. 1 and 12) so that its rotation axis is vertical.

[0035] The transport belt 62 is formed in an endless shape and is looped around a right pulley 60 and a left pulley 61. The transport belt 62 is disposed inside the curtain rail 2, as shown in FIGS.

[0036] The output shaft 45 of the drive motor 42 is connected to the right pulley 60, and the right pulley 60 rotates in the forward and reverse directions as the drive motor 42 rotates in the forward and reverse directions. When the right pulley 60 rotates in the forward and reverse directions, the transfer belt 62 moves in the forward and reverse directions, and the leading runner 3A attached to the transfer belt 62 moves left and right. It is also preferable to provide an appropriate clutch or transmission (not shown) between the drive motor 42 and the right pulley 60.

[0037] 1 and 3, the right pulley case 63 and the left pulley case 64 are formed in the shape of a roughly rectangular box whose front-to-rear width and height are slightly larger than those of the curtain rail 2, and whose sides are curved and bulge slightly in the front-to-rear direction. The right pulley case 63 is fixed to the right end of the curtain rail 2 by fitting the right end of the curtain rail 2 into an opening formed on its left side. The left pulley case 64 is fixed to the left end of the curtain rail 2 by fitting the left end of the curtain rail 2 into an opening formed on its right side.

[0038] A hook 65 is attached to the left side of the front surface of the right pulley case 63. The hook 65 is provided with a hanging portion 65a for supporting the right end of the curtain fabric 102. In this embodiment, the position of the hook 65 can be changed from the left side of the front surface of the right pulley case 63 to the front left side. By hanging the right end of the curtain fabric 102 from the hanging portion 65a of the hook 65, it is possible to cover the motor unit 4 and the power distribution unit 5 installed on the left side thereof so that they cannot be seen from the front, i.e., from inside the room.

[0039] 11 and 12, cable holding mechanisms 63a and 64a are formed on the tops of the right pulley case 63 and the left pulley case 64 of this embodiment, respectively. The cable holding mechanisms 63a and 64a are configured by a plurality of protrusions extending alternately from the front-rear direction along the left-right direction.

[0040] In the electric curtain rail 1 of this embodiment, the cable holding mechanisms 63a, 64a of the right pulley case 63 and the left pulley case 64 configured as above enable the branch cable 104 to be held in the right pulley case 63 and the left pulley case 64. Although not shown, it is also preferable to provide covers that cover the top surfaces of the right pulley case 63 and the left pulley case 64.

[0041] 2. Installation of the electric curtain rail 1 Next, an example in which a plurality of electric curtain rails 1 according to this embodiment are arranged side by side will be described with reference to Figures 13 to 15. Hereinafter, the overall configuration in which a plurality of electric curtain rails 1 are arranged side by side will be referred to as an electric curtain rail system 200.

[0042] 13 shows an electric curtain rail system 200 in which two electric curtain rails 1 according to the present embodiment described above are installed side by side, one on the left and one on the right. In this electric curtain rail system 200, the electric curtain rail on the right side is referred to as a first electric curtain rail 1A, and the electric curtain rail on the left side is referred to as a second electric curtain rail 1B.

[0043] In this configuration, in the first motorized curtain rail 1A, as shown in Figures 8A and 8B, a power cable 103 is connected to the input terminal 50 of the power branch unit 5, and one end of a branch cable 104 is connected to the output terminal 51. On the other hand, in the second motorized curtain rail 1B, as shown in Figures 10A and 10B, the other end of the branch cable 104 is connected to the input terminal 50 of the power branch unit 5, and nothing is connected to the output terminal 51.

[0044] With this configuration, the electric curtain rail system 200 of this embodiment can supply power to each motor unit 4 from the power branch unit 5 of each electric curtain rail 1A, 1B, without connecting the power cable 103 to the second electric curtain rail 1B. In other words, the electric curtain rail system 200 of this embodiment is configured so that multiple electric curtain rails 1 can be operated with a single outlet.

[0045] 4, 11, and 12, branch cable 104 is held by cable holding mechanism 63a of right pulley case 63 and cable holding mechanism 64a of left pulley case 64 of first electric curtain rail 1A, and is arranged along the top of curtain rail 2. This allows branch cable 104 to be held in a manner that is not visible.

[0046] In addition, in the electric curtain rail system 200 of this embodiment, before connecting both ends of the branch cable 104, the curtain rail 2 of the first electric curtain rail 1A can first be attached to the mounting surface of a building or the like via the bracket 101, with the branch cable 104 held by the cable holding mechanisms 63a, 64a of the first electric curtain rail 1A.

[0047] After the curtain rail 2 is attached, the branch cable 104 drawn out from the cable holding mechanisms 63a, 64a can be connected to the output terminal 51 of the power supply branch unit 5 of the first motorized curtain rail 1A and the input terminal 50 of the power supply branch unit 5 of the second motorized curtain rail 1B. Since the motorized curtain rails 1A, 1B can be assembled using this procedure, it is possible to improve the ease of assembly of the motorized curtain rail system 200. In this case, the input terminal 50 and the output terminal 51 are arranged to face the same direction, specifically, upward, as shown in FIGS. 8A, 9A, and 10A, so that the power cable 103 and the branch cable 104 can be attached and detached from the same direction, improving the ease of assembly.

[0048] In this way, with the electric curtain rail system 200 of this embodiment, it is possible to first attach the electric curtain rails 1A and 1B to the mounting surface of a building or the like, and then perform the electrical wiring. Therefore, the electric curtain rail system 200 can be installed by one person.

[0049] The motorized curtain rail system 200 can also have three or more motorized curtain rails 1. In this case, for the motorized curtain rail 1 placed in the middle, two branch cables 104 connected to the power supply branch units 5 of the two adjacent motorized curtain rails 1 can be connected to the input terminal 50 and output terminal 51 of the power supply branch unit 5, respectively, as shown in Figures 9A and 9B.

[0050] Even in such a case, incorrect wiring can be prevented by making the input side terminal 50 a female terminal and the output side terminal 51 a male terminal, and by making one end of the branch cable 104 a female terminal and the other end a male terminal 104 b.

[0051] As described above, the electric curtain rail system 200 according to this embodiment is configured so that only one outlet is required, even when multiple electric curtain rails 1 are required, for example, when the installation location has a large window or when multiple windows are placed side by side (multiple windows). This prevents the design from being compromised by the need to route wiring. Furthermore, by connecting the control board 41 (see FIG. 6) of the motor unit 4 of each electric curtain rail 1A, 1B to a central control unit (not shown), the central control unit can centrally control each electric curtain rail 1A, 1B.

[0052] 14 shows an electric curtain rail system 200 in which two electric curtain rails 1A, 1B are arranged side by side, one at the front and one at the back, and Fig. 15 shows an electric curtain rail system 200 in which four electric curtain rails 1A to 1D are arranged side by side, two at the front and two at the back and two at the left and right. Even with each of these configurations, it is only necessary to connect power cable 103 to one electric curtain rail 1A, and all of the electric curtain rails can be operated from a single outlet.

[0053] In addition, when electric curtain rails 1A, 1B and electric curtain rails 1D, 1C are installed side by side in front and behind as in the configuration shown in Figures 14 and 15, there is no need to hold branch cable 104 in the cable holding mechanisms 63a, 64a of right pulley case 63 and left pulley case 64.

[0054] 3. Effects According to the embodiment described above, the following advantageous effects can be obtained.

[0055] (1) The electric curtain rails 1A, 1B are provided with a power supply branch unit 5 attached to the cover 44 of the motor unit 4, which eliminates the need to connect a power cable 103 to each of the electric curtain rails 1A, 1B. In other words, by connecting the power supply cable 103 to one electric curtain rail 1A, the motor units 4 of the electric curtain rails 1A, 1B can be electrically connected by the power supply branch unit 5.

[0056] (2) Since the power supply branch unit 5 is attached not to the curtain rail 2 but to the motor unit 4 below it, the power supply cable 103 and the branch cable 104 can be easily connected.

[0057] (3) The power supply branch unit 5 is attached to the cover 44 of the motor unit 4, so that the power supply cable 103 and the branch cable 104 can be easily attached and detached.

[0058] (4) Since the input terminal 50 and the output terminal 51 of the power supply branch unit 5 are arranged to face in the same upward direction, the power cable 103 and the branch cable 104 can be attached and detached from the same direction, making it easy to handle the cables.

[0059] (5) The case 53 of the power supply branch unit 5 has an opening 53g that opens upward, so that the power cable 103 and the branch cable 104 connected to the input terminal 50 and the output terminal 51 can be led out from the same opening 53g. This makes it easy to handle the cables.

[0060] (6) The right pulley case 63 and the left pulley case 64 are provided with the cable holding mechanisms 63a, 64a, so that the branch cable 104 can be routed along the curtain rail 2 without sagging. This makes it easier to route the branch cable 104. Furthermore, the above (2) to (6) make it possible to improve the ease of assembly of the electric curtain rail 1.

[0061] 4. Variations The present invention can also be implemented in the following aspects.

[0062] In the above embodiment, one electric curtain rail 1 is configured to suspend and support one curtain fabric 102. However, the electric curtain rail 1 according to the present invention can also be configured to suspend and support a pair of left and right curtain fabrics. In this case, by providing a pair of left and right leading runners, and attaching one leading runner to a position on the front side of the transport belt and the other leading runner to a position on the opposite rear side of the transport belt, it is possible to synchronize the opening and closing of the pair of left and right curtain fabrics.

[0063] In the above embodiment, the input terminals 50 and the output terminals 51 are arranged to face upward. However, the input terminals 50 and the output terminals 51 may face in other directions (for example, downward, forward, backward, sideways, or diagonally) as long as they face the same direction. In this case, too, it is preferable that the opening 53g of the case 53 be provided in the same direction as the input terminals 50 and the output terminals 51.

[0064] In the above embodiment, the leading runner 3A is moved by the drive force of the drive motor 42, which serves as the drive means of the drive unit (motor unit 4), being transmitted via the right pulley 60 to the transport belt 62, which then moves. However, the configuration of the drive unit that moves the leading runner 3A is not limited to this. For example, it is also possible to use an electric cylinder or air cylinder as the drive means of the drive unit, and transmit the linear motion of the cylinder to the leading runner 3A via appropriate transport means 6 to move the leading runner 3A in the left-right direction. In this case, too, by attaching a power distribution unit 5 to the cover 44 of the drive unit, it is possible to obtain the same effects as in the above embodiment. [Explanation of symbols]

[0065] 1: Electric curtain rail 2: Curtain rail 3A: Leading runner 3B: Subordinate runner 4: Motor unit (drive unit) 5: Power distribution unit 6:Transportation means 20: Bottom 30: Main body 31: Traveling roller 32: Runner Arm 33: Belt joint 40: Power supply board 41: Control board 42: Drive motor (drive means) 43: Encoder 44: Cover 44a: Left side wall 44b: Mounting hole 45: Output shaft 50: Input terminal 51: Output terminal 52: Connection cord 53: Case 53a: Left wall 53b: Front wall 53c: Back wall 53d: Upper wall 53e: Lower wall 53f: Fixed shaft part 53g: opening 60: Right pulley 61: Left pulley 62:Transport belt 63: Right pulley case 63a: Cable retention mechanism 64: Left pulley case 64a: Cable retention mechanism 65: Hook 65a: Hanging part 100: Electric curtains 101: Bracket 102: Curtain fabric 103: Power cable 103a: Power plug 103b: Male terminal 104: Branch cable 104a: Female terminal 104b: Male terminal 200: Electric curtain rail system

Claims

1. An electric curtain rail, The device includes a curtain rail, a runner, a drive unit, and a power supply branch unit. The runner is supported by the curtain rail, The drive unit includes a drive means and a cover that covers the drive means, and is disposed to extend downward from the curtain rail; The driving means is capable of moving the runner along the curtain rail, the power supply branch unit includes an input terminal, an output terminal, and a cord that electrically connects these terminals to the drive unit, and is configured to branch and output power input from the input terminal to the output terminal and the drive unit, The power distribution unit is attached to the cover.

2. The electric curtain rail according to claim 1, The power supply branch unit is attached to the cover so that its longitudinal direction intersects with the longitudinal direction of the curtain rail.

3. The electric curtain rail according to claim 1 or 2, A pair of left and right pulleys and an endless transfer belt are provided. The transfer belt is wound around the pair of pulleys, The drive means is a drive motor configured to rotate the pulley, The runner is configured to move left and right as the drive motor drives the transport belt to move forward and backward.

4. The electric curtain rail according to claim 3, a left pulley case and a right pulley case that rotatably support the pair of pulleys, a cable holding mechanism is formed on each of the left pulley case and the right pulley case; The cable holding mechanism is configured to hold a branch cable connecting the output terminal and the input terminal of an adjacent electric curtain rail.

5. The electric curtain rail according to any one of claims 1 to 4, The input terminal and the output terminal are arranged to face in the same direction.

6. The electric curtain rail according to claim 5, The power supply branch unit includes a case having an opening in the same direction as at least the input terminal and the output terminal.

7. An electric curtain rail system comprising a first electric curtain rail having the electric curtain rail according to any one of claims 1 to 6 and a second electric curtain rail having the electric curtain rail according to any one of claims 1 to 6, Further provided with a power cable and a branch cable, An electric curtain rail system in which the power cable is connected to the input terminal of the first electric curtain rail, one end of the branch cable is connected to the output terminal of the first electric curtain rail, and the other end of the branch cable is connected to the input terminal of the second electric curtain rail.

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