JP2012200293A - Electric curtain - Google Patents

Abstract

In an electric curtain, a simple and easy-to-use drive unit is provided with a simple structure, and the electric curtain can be easily electrified with ease of construction.
An electric curtain includes a drive unit that self-runs by impact force while repeatedly generating an impact by electric power, and a control unit that controls the drive unit, and the curtain is opened and closed by the self-run of the drive unit. Is done. The drive unit 2 includes an impact actuator 3 that generates an impact in a direction along the curtain rail 11, a housing 22, and a friction plate 23. The drive unit 2 is integrated with the runner 12 constituting the clamper 4 and is held on the lower surface S of the curtain rail 11 via the friction plate 23. The drive unit 2 moves in a predetermined direction along the curtain rail 11 in the presence of a frictional force between the friction plate 23 and the curtain rail 11. The existing curtain can be easily electrified simply by connecting the self-propelled small drive unit 2 to the runner 12.
[Selection] Figure 1

Description

  The present invention relates to an electric curtain including a drive unit that self-runs due to an impact.

  Conventionally, an electric curtain that opens and closes a curtain using a linear motor that includes a stator composed of a plurality of permanent magnets arranged along a curtain rail and a mover composed of an electromagnet that runs along the curtain rail has been provided. Known (see, for example, Patent Documents 1 and 2). Further, an electric curtain is known in which a wire arranged along a curtain rail is run by a rotary motor and a pulley fixed to a part of the curtain rail, and the curtain is opened and closed by the wire (see, for example, Patent Document 3).

Japanese Patent Laid-Open No. 11-42158 JP 2000-5045 A No. 2-11888

  However, in the electric curtain as described above, it is necessary to construct a linear motor along the curtain rail, or to lay a system of a rotary motor, a pulley and a wire, and there is a problem that the apparatus becomes large. . Moreover, since the apparatus is large-scale, there is a problem that it is not possible to easily respond to a request for electrically driving an existing curtain.

  The present invention solves the above-described problems, and has an electric curtain that has a simple configuration, includes a small and easy-to-use drive unit, is easy to construct, and can easily electrify an existing curtain. The purpose is to provide.

  In order to achieve the above object, an electric curtain according to the present invention includes a drive unit that opens and closes a curtain that can be opened and closed along a curtain rail, and a control unit that controls electric power supplied to the drive unit. The drive unit includes an impact actuator that generates an impact by applying electric power and moves together with the drive unit by the impact force.

  In this electric curtain, it is preferable that the drive unit moves together with a runner that moves by hanging the curtain.

  This electric curtain preferably includes a clamper that generates a frictional force between the drive unit and the curtain rail to limit the direction of movement of the drive unit in one direction along the curtain rail.

  In this electric curtain, it is preferable that the control unit controls the moving speed of the driving unit by controlling the electric power.

  In this electric curtain, the driving unit preferably includes a battery as a power source and moves together with the battery.

  The electric curtain preferably includes a remote controller for remotely operating the drive unit, and the control unit preferably includes a signal receiving unit that receives an operation signal from the remote controller.

  In this electric curtain, it is preferable that the drive unit includes a position sensor, and the control unit performs movement control of the drive unit based on a position signal from the position sensor.

  In this electric curtain, it is preferable that the drive unit includes a speed sensor, and the control unit performs movement control of the drive unit based on a speed signal from the speed sensor.

  According to the electric curtain of the present invention, the drive unit that opens and closes the curtain is configured by an impact actuator. Therefore, an electric curtain that is easy to use can be realized by taking advantage of the downsizing of the drive unit and the ease of operation. The curtain can be easily electrified.

(A) is a partial cross-sectional side view of the electric curtain according to the first embodiment of the present invention, (b) is a partial cross-sectional front view of the electric curtain, (c) is one during opening and closing operation of the electric curtain FIG. (A) (b) is sectional drawing explaining the left direction operation | movement of the impact actuator applied to the drive part of the same electric curtain, (c) (d) is sectional drawing explaining the right direction operation | movement of the impact actuator. (A) is sectional drawing of the other impact actuator applied to the drive part of the same electric curtain, (b) is a schematic diagram explaining the operating principle of the impact actuator. (A) (b) is sectional drawing explaining the leftward operation | movement of the other impact actuator applied to the drive part of the same electric curtain, (c) is the electric current which flows through an electromagnetic coil when operating the impact actuator to the left Time change graph. (A) (b) is sectional drawing explaining the rightward operation | movement of the impact actuator, (c) is a time change graph of the electric current sent through an electromagnetic coil, when operating the impact actuator rightward. (A) (b) is sectional drawing explaining operation | movement of the further another impact actuator applied to the drive part of the same electric curtain, (c) is a schematic diagram explaining the operation principle of the impact actuator. (A) is a plane sectional view of still another impact actuator applied to the drive unit of the electric curtain, (b) is a sectional view taken along line AA in (a), and (c) is a sectional view taken along line BB in (b). FIG. (A)-(c) is a partial sectional side view which shows the operation example of the impact actuator. (A) (b) is a time change graph of the electric current sent through an electromagnetic coil, when operating the impact actuator. Sectional drawing of the further another impact actuator applied to the drive part of the same electric curtain. (A) and (b) are the elements on larger scale of the impact actuator. (A)-(d) is a partial sectional side view which shows the mode of operation | movement of the impact actuator. The perspective view which shows the modification of the electric curtain of 1st Embodiment. The perspective view which shows the other modification of the electric curtain of 1st Embodiment. (A) (b) is sectional drawing explaining the leftward operation | movement of the impact actuator applied to the drive part of the modification. The perspective view which shows the electric curtain of 2nd Embodiment. The perspective view which shows the modification of the electric curtain of 2nd Embodiment. (A) and (b) are perspective views which show the operation example of the other modification of the electric curtain of 2nd Embodiment.

(First embodiment)
Hereinafter, an electric curtain according to an embodiment of the present invention will be described with reference to the drawings. Fig.1 (a) thru | or (c) show the electric curtain which concerns on 1st Embodiment. The electric curtain 1 includes a driving unit 2 that opens and closes a curtain 11 a that can be opened and closed along the curtain rail 11, a clamper 4 that holds the driving unit 2 on the lower surface S of the curtain rail 11, and a driving unit from the power source 10. And a control unit 20 for controlling the power supplied to the power source 2. The upper portion of the curtain 11 a is locked by hooks 13 to a plurality of runners 12 that are movably attached along the curtain rail 11. The drive unit 2 is integrated into the case 22, an impact actuator 3 that generates an impact by applying electric power and moves with the drive unit 2 by the impact force (also simply referred to as an actuator 3), a case 22 that supports the actuator 3, and the case 22. And a friction plate 23. Details of the actuator 3 will be described later. The housing 22 adjusts the posture of the actuator 3 such that the terminal block for supplying power to the actuator 3 and the like, and the direction of the impact force generated by the actuator 3 is the moving direction along the curtain rail 11. It has a function as a mounting base. The friction plate 23 has a frictional contact surface. When the driving unit 2 is held on the lower surface S of the curtain rail 11 by the clamper 4, the contact surface is pressed against the lower surface S.

  The curtain rail 11 has a C-shaped cross section and is installed near a window. The runner 12 includes a portion 12a to which the hook 13 is locked, a support portion 12b that supports the portion 12a from above, and a wheel 12c provided on the support portion 12b. The wheel 12 c can travel along the curtain rail 11. The runner 12 provided at the end of the curtain 11 a includes a flange portion 12 d provided on the support portion 12 b and a coil spring 12 e and constitutes the clamper 4. The coil spring 12e is located between the flange portion 12d and the friction plate 23. The coil spring 12e presses the friction plate 23 against the curtain rail 11 by its extension force, and simultaneously presses the wheel 12c against the curtain rail 11 via the support portion 12b. With such a configuration, the drive unit 2 is integrated with the friction plate 23, the clamper 4, and the runner 12.

  The drive unit 2 moves, that is, self-runs when the actuator 3 generates an impact force in the direction along the curtain rail 11 (X direction). In order to limit the direction of movement of the self-propelled drive unit 2 to any one of the opening direction and the closing direction along the curtain rail 11, a drag force for suppressing the backward movement due to the reaction in the previous stage of the impact generation. Needs to act on the drive unit 2. As this drag force, the friction force between the friction plate 23 and the curtain rail 11 generated by the pressing force of the coil spring 12e of the clamper 4 is used. The frictional force may be weak enough to open and close the curtain 11a manually even when the driving unit 2 is not electrically operated.

  The operation of the electric curtain 1 having the above configuration will be described. As the drive unit 2 moves, the runner 12 integrated with the drive unit 2 moves, and thereby the curtain 11a suspended from the runner 12 is opened and closed. In order to operate the actuator 3 of the drive unit 2, the control unit 20 shapes the direct current or alternating current from the power source 10 into an appropriate pulse current, or shapes the base line into a sine wave. , Power time control. The control unit 20 receives an instruction to stop opening / closing or the like by the operation of the operating device 20a by the operator. The control unit 20 controls the driving unit 2 in accordance with the instruction, and opens and closes the curtain 11a as shown in FIGS. For switching the opening / closing operation of the curtain 11a, the control unit 20 is provided with a rotary switch (not shown) for switching between three states of opening, closing, and operation stop of the drive unit 2 (not shown). Should be switched. For example, the operation device 20a may be configured by a string provided with a knob portion and hung from the control portion 20, and the rotary switch may be switched by lowering the knob portion. Two limit switches are arranged with their contact portions facing each other in the direction of the curtain rail 11, and the operation device 20a is tilted in the direction of opening or closing the curtain 11a, and one limit switch is turned on. The curtain 11a may be opened and closed. The control unit 20 and the operation device 20a may be provided in the self-running drive unit 2 or may be fixed to a wall surface or the like.

  The drive unit 2 may be provided not only in the head runner 12 in the curtain 11 a but also in other runners 12. When a plurality of driving units 2 are used, the interval between the driving units 2 when the curtain 11a is opened is adjusted by the pulling back force from the curtain 11a, and when the curtain 11a is closed, the interval between the driving units 2 comes into contact with each other. It is adjusted by the force exerted.

  According to the electric curtain 1 of the present embodiment, the curtain 11a is opened and closed by the drive unit 2 that is self-propelled by an impact. Therefore, the drive unit 2 is easy to use taking advantage of the characteristics of ease of miniaturization and operability. An electric curtain can be realized. Further, since the drive unit 2 is self-propelled, there is no need to lay drive components along the curtain rail as in the case of using a linear motor or wire in a conventional electric curtain. Therefore, the existing curtain can be easily electrified simply by coupling the self-running drive unit 2 to the runner. Further, it is easy to use an existing curtain rail, and when the non-electric curtain is electrified, it is not necessary to replace the rail, and parts such as a linear motor, a rotary motor, a pulley and a wire are unnecessary.

(Eddy current impact actuator)
Next, the configuration and operation principle of the impact actuator 3 in the drive unit 2 will be described in detail. FIG. 2 shows an example of the actuator 3. As shown in FIG. 2A, the actuator 3 includes left and right electromagnetic coils 31 that are spaced apart from each other and are coaxially disposed opposite to each other, an elastic body 30 that is disposed between the electromagnetic coils 31, and each electromagnetic wave. And two conductors 32 disposed between the coil 31 and the elastic body 30. Each conductor 32 is configured to be movable along the axial direction of the electromagnetic coil 31 at least within a range where the elastic body 30 expands and contracts. The electromagnetic coils 31 are integrated by a shaft bar 31a disposed on the central axis thereof and are respectively stored in a coil frame 31b. The conductor 32 is a donut-shaped metal disk made of a good conductor such as aluminum, for example, and the movement direction is restricted by the shaft bar 31a. The elastic body 30 extends so that the conductor 32 is brought close to the electromagnetic coil 31 when the actuator 3 is not driven. The degree of proximity between the conductor 32 and the electromagnetic coil 31 may be a distance that can generate an eddy current necessary for the conductor 32. The elastic body 30 can be configured using, for example, a coil spring, a leaf spring, rubber, or the like. The actuator 3 includes a pair including one electromagnetic coil 31 and one conductor 32 so as to be symmetrically arranged on both sides of the elastic body 30 along the shaft rod 31a.

  The operation of the actuator 3 having the above configuration will be described. The actuator 3 moves the object M in the direction of the shaft bar 31a by giving an impact to the housing 22 and the friction plate 23 (collectively, the object M). The force generated by the impact is referred to as impact force or impact. As the object M gives an impact to the runner 12 (FIG. 1) along with the movement, the runner 12 moves in the direction of the shaft 31a. The electromagnetic coil 31 is a source of impact when supplied with electric power. The object M is moved to the left by the operation of the left group, and is moved to the right by the operation of the right group. First, the operation of the left group will be described. The left conductor 32 is repelled to the right as shown in FIG. 2 (a) by the repulsive force generated due to the eddy current generated in the conductor 32 when the left electromagnetic coil 31 is energized. Is done. Then, the elastic body 30 is compressed by the moving conductor 32 and then pushes the conductor 32 back to the left by the extension force. At this time, the energization of the electromagnetic coil 31 is turned off. Therefore, as shown in FIG. 2B, the conductor 32 collides with the left electromagnetic coil 31, and an impact toward the left is generated by the collision. The object M is pushed leftward by this impact and moves leftward. The control unit 20 performs power control on the electromagnetic coil 31 so that a current flows at a stroke so that a necessary eddy current and a repulsive force resulting from the eddy current can be obtained, and the collision between the conductor 32 and the electromagnetic coil 31 is an obstacle. Turn off the power so that it is not. Further, the control unit 20 repeats such energization, thereby repeatedly giving an impact to the object M and moving the object M to the left in a pulse manner. FIGS. 2C and 2D show a case where the object M is moved to the right by the operation of the right group. It can be considered that the operation is obtained by reversing the operation in the case of FIGS.

  In order to move the object M in one direction due to the impact as described above, a mechanism for preventing the reverse movement is required. In addition to the frictional force generation mechanism using the friction plate 23 as the mechanism, the frictional force generation mechanism In addition, a ratchet mechanism or the like can be used. The ratchet mechanism is configured by, for example, providing a linear gear along the moving direction on the surface of the curtain rail on which the object M moves, and providing the object M with pawls that mesh with the teeth of the linear gear. By meshing the teeth with the pawls, the movement direction of the pawls, and thus the movement direction of the object M, is limited to one direction. In order to switch the moving direction, for example, a pawl switching mechanism operated by an electromagnet is provided, and the meshing direction of the teeth and pawls can be reversed by the mechanism. When the operating unit 20a formed of a string is provided in the drive unit 2 and used, the meshing direction of the teeth and pawls may be switched by operating the operating unit 20a.

  As described above, the actuator 3 can move the object M in either the left direction or the right direction, and constitutes the drive unit 2 that can reciprocate. The electric curtain 1 can open and close the curtain 11 a by using the driving unit 2. Further, such a drive unit 2 can be realized in a small size, light weight, and low cost, and the electric curtain 1 can be realized in a small size, light weight, and low cost. In order for the drive unit 2 to unilaterally move the object M in the direction of the impact by repeatedly applying an impact to the object M, as described above, the friction plate 23 (the object M) is moved. It is necessary to receive resistance due to frictional force. When moving the object M to the left, the impact caused by the movement of the conductor 32 to the right and the collision with the elastic body 30 should not exceed the maximum static frictional force. Further, the impact caused by the movement of the conductor 32 to the left and the collision with the electromagnetic coil 31 is made to exceed the maximum static frictional force. The drive unit 2 can move under a friction plate 23 that satisfies this condition. The elastic body 30 serves as a damper that softens the impact by being compressed over time.

(Permanent magnet type impact actuator)
FIG. 3 shows still another actuator. As shown in FIG. 3A, the actuator 3 is obtained by replacing the two conductors 32 with two permanent magnets 33 arranged in correspondence with each other in the actuator 3 shown in FIG. is there. The permanent magnet 33 is repelled and moved by a repulsive force due to the interaction between the coil current flowing by energization of the electromagnetic coil 31 and the magnetic field of the permanent magnet 33. The permanent magnet 33 has a donut disk shape like the conductor 32 and is magnetized in the radial direction from the center side toward the outer periphery side. In the case of this example, the center side is the S pole and the outer peripheral side is the N pole. As shown in FIG. 3B, the permanent magnet 33 receives a repulsive force or an attractive force (not shown) depending on the direction of the current flowing through the electromagnetic coil 31. In addition, in FIG.3 (b), the magnetic force line is shown with the arrow curve.

  The operation of the actuator 3 having the above-described configuration will be described, for example, for a pair of the left electromagnetic coil 31 and the permanent magnet 33. When the actuator 3 passes a current through the electromagnetic coil 31 so as to apply a repulsive force to the permanent magnet 33 and then turns off the current, the permanent magnet 33 is received by the elastic body 30 on the right side and then rebounded by the elastic body 30. And collide with the original electromagnetic coil 31. That is, the actuator 3 uses a repulsive force generated by the interaction between the coil current flowing by energization of the electromagnetic coil 31 and the magnetic field of the permanent magnet 33 instead of the repulsive force generated due to the eddy current. As a compromise configuration of what is shown in FIG. 2 and what is shown in FIG. 3, one conductor 32 and one permanent magnet 33 may be provided. In the case of this configuration, the left and right operations and configurations are not necessarily symmetrical with each other. On the other hand, by utilizing the fact that it is not symmetrical, it is possible to optimize the cost and the operating characteristics by changing the characteristics of the reciprocating operation.

  In this actuator 3, the elastic body 30 can be removed by substituting the repulsive force of the elastic body 30 by the magnetic repulsive force of the left and right permanent magnets 33 (not shown). In this case, when the two permanent magnets 33 approach each other, the impact of the collision is reduced by the damping effect of the mutual magnetic repulsion force. When the two permanent magnets 33 are separated from each other, the moving speed continues to be accelerated until the permanent magnets 33 that are moving relative to each other exert a magnetic force and collide with the electromagnetic coil 31. In consideration of this, the interval between the left and right sets is appropriately set. As described above, the actuator that uses the repulsive force between the permanent magnet 33 and the electromagnetic coil 31 can generate a larger impact than the case of eddy current and can perform a large movement at one time. Further, there is no heat generation due to Joule heat in the case of eddy current, and stable and energy efficient operation is possible.

(Single-coil impact actuator)
4 and 5 show still another actuator. As shown in FIG. 4A, the actuator 3 includes an electromagnetic coil 31, a permanent magnet 33, a stopper 34, and a control unit 20 that controls the current supplied to the electromagnetic coil 31 over time. The permanent magnet 33 moves relative to the electromagnetic coil 31 by an electromagnetic action generated by energizing the electromagnetic coil 31. The stopper 34 is integrated with the electromagnetic coil 31 so as to limit the range of relative movement of the permanent magnet 33 to form a collision target. In the actuator 3, an impact is generated when the permanent magnet 33 collides with a collision target (that is, one of the electromagnetic coil 31 and the stopper 34) by energizing the electromagnetic coil 31. The collision target is used as a term indicating an opponent (an opponent of relative movement) with which the permanent magnet 33 collides. The electromagnetic coil 31 is housed in a coil frame, and is integrated with the stopper 34 by a shaft bar 31a disposed on the central axis thereof. The permanent magnet 33 has a donut disk shape, and is magnetized in the radial direction from the center side toward the outer peripheral side. In the case of this example, the center side is the S pole and the outer peripheral side is the N pole. The permanent magnet 33 receives a repulsive force or an attractive force depending on the direction of the current flowing through the electromagnetic coil 31.

  The operation of the actuator 3 configured as described above will be described with reference to FIGS. 4A, 4B, and 4C in the case where the moving object M is moved to the left. The controller 20 reciprocates the permanent magnet 33 by the attractive force (J <0, time t3) and repulsive force (J> 0, time t5) by the electromagnetic coil 31 by controlling the coil current J energized to the electromagnetic coil 31 over time. The permanent magnet 33 is made to collide with the electromagnetic coil 31 by attractive force. That is, the permanent magnet 33 moves leftward from the position between the electromagnetic coil 31 and the stopper 34 as shown in FIG. 4A by the attractive force at time t3 in FIG. ) Collides with the electromagnetic coil 31 as shown in FIG. Thereafter, the permanent magnet 33 returns to the position shown in FIG. 4A by the repulsive force at time t5 in FIG. Such operation of the permanent magnet 33 (operation at times t3 and t5) is repeated, and the object M moves in a pulse manner to the left. FIG. 4C shows an example in which the operation is started by the repulsive force at time t2 from the state (initial state) where the permanent magnet 33 is on the electromagnetic coil 31 side as shown in FIG. 4B. Times t1 and t4 are drive adjustment times.

  The case where the object M is moved rightward is demonstrated with reference to FIG. 5 (a) (b) (c). FIG. 5A is the same diagram as FIG. The controller 20 reciprocates the permanent magnet 33 by repulsive force (J> 0, time t4) and attractive force (J <0, time t5) by the electromagnetic coil 31 by time-controlling the coil current J energized to the electromagnetic coil 31. The permanent magnet 33 is made to collide with the stopper 34 by repulsive force. That is, as shown in FIG. 5 (a), the permanent magnet 33 moves to the right from the position between the electromagnetic coil 31 and the stopper 34 by the repulsive force at time t4 in FIG. 5 (c). As shown in FIG. Thereafter, the permanent magnet 33 returns to the position shown in FIG. 5A by the attractive force at time t5 in FIG. The operation of the permanent magnet 33 (operation at times t4 and t5) is repeated, and the object M moves in a pulse manner to the right. Here, the operation of the permanent magnet 33 at the times t1 and t2 in FIG. At time t1, it is assumed that the permanent magnet 33 is in the initial state. In the initial state, the coil current J is zero, the permanent magnet 33 is not in the intermediate position between the electromagnetic coil 31 and the stopper 34 (the state in FIG. 5A), and the permanent magnet 33 is not in the above-described FIG. As shown in FIG. 2, the electromagnetic coil 31 is on the side. The permanent magnet 33 is at the left end of the moving range in its initial state. In the first collision in which the permanent magnet 33 moves to the right from the initial state at the left end and collides with the stopper 34, as shown at time t2, the coil current J gradually increases and then the coil current J that becomes a constant value flows. . The reason why the coil current J is gradually increased at the beginning of the time t2 is to suppress the leftward movement of the moving object M due to the reaction caused by the sudden separation.

  As described above, the object M is moved to the left when the permanent magnet 33 collides with the left electromagnetic coil 31, and is moved to the right when the permanent magnet 33 collides with the right stopper 34. The Therefore, when moving the object M to the left, it is necessary to apply a magnetic force from the electromagnetic coil 31 to the permanent magnet 33 so that the permanent magnet 33 does not collide with the stopper 34. Conversely, when moving the object M to the right, it is necessary to apply a magnetic force from the electromagnetic coil 31 to the permanent magnet 33 so that the permanent magnet 33 does not collide with the electromagnetic coil 31. The control unit 20 that controls the coil current J causes a collision in one direction of relative movement of the electromagnetic coil 31 and the permanent magnet 33, avoids the collision in a direction opposite to the one direction, and reverses the direction of the relative movement. . The control unit 20 performs time control on the coil current J applied to the electromagnetic coil 31 so that only an impact in one direction is repeatedly generated. Since the drive unit 2 including the control unit 20 and the actuator 3 can generate an impact due to a collision in any direction of the relative movement of the electromagnetic coil 31 and the permanent magnet 33, the object M is reciprocated. Movement can be realized. Further, since the actuator 3 is formed by combining the single magnet coil 31 with the permanent magnet 33 and the stopper 34, the structure is small and simple. By using the drive unit 2 including the actuator 3, the electric curtain 1 can be realized in a small size, a light weight, and a low cost as compared with a case where a motor, a driving force transmission device, or the like is used.

(Coil moving impact actuator)
FIG. 6 shows still another actuator. As shown in FIG. 6A, the actuator 3 replaces the electromagnetic coil 31 and the permanent magnet 33 with each other and replaces the stopper 34 with a separate permanent magnet 33 in the actuator 3 shown in FIG. It is a thing. That is, the actuator 3 includes two disk-shaped permanent magnets 33 that are coaxially arranged apart from each other and fixed to both ends of the shaft rod 31a, and the electromagnetic coil 31 that is movable along the shaft rod 31a. I have. The electromagnetic coil 31 is housed in a coil frame, and is inserted through a shaft 31a on the central axis. The two permanent magnets 33 are integrated with the stopper 34 by a shaft bar 31a to form a collision target (in this case, a counterpart to which the electromagnetic coil 31 collides). The electromagnetic coil 31 moves relative to the two permanent magnets 33 by an electromagnetic action generated by energizing the electromagnetic coil 31. The range of the relative movement is limited by the collision object (by the permanent magnets 33 at both ends). The two permanent magnets 33 have a donut disk shape and are magnetized in the radial direction from the center side toward the outer peripheral side. In the case of this example, the center side is the S pole and the outer peripheral side is the N pole.

  The operation of the actuator 3 configured as described above will be described with reference to FIGS. 6B and 6C in which the object M is moved to the left. When the electromagnetic coil 31 sandwiched between the permanent magnets 33 as described above is energized, it receives a repulsive force from one permanent magnet 33 and an attractive force from the other permanent magnet 33 as shown in FIG. Receive. Therefore, the moving direction of the electromagnetic coil 31 can be selected as either the left side or the right side depending on the direction of the current flowing through the electromagnetic coil 31. Therefore, the control unit 20 controls the coil current of the electromagnetic coil 31 with time, thereby causing the electromagnetic coil 31 to collide with the left permanent magnet 33 and moving the object M to the left as shown in FIG. Can be moved to. Similarly, the object M can be moved rightward by causing the electromagnetic coil 31 to collide with the right permanent magnet 33. The control unit 20 causes a collision in one direction of relative movement of the electromagnetic coil 31 and the permanent magnet 33, avoids the collision in a direction opposite to the one direction, and reverses the direction of relative movement. The control unit 20 performs time control on the current supplied to the electromagnetic coil 31 so as to repeatedly generate only an impact in one direction. By repeating such control, the control unit 20 moves the object M in a pulse manner to the left, and similarly to the right.

(Voice coil type impact actuator)
7, 8 and 9 show yet another actuator. As shown in FIGS. 7A, 7B, and 7C, the actuator 3 includes a rectangular plate-shaped permanent magnet 33 and two permanent magnets 33 that are respectively disposed on the opposing inner surfaces of the rectangular magnetic circuit 35. And an electromagnetic coil 31 movably disposed between the control unit 20 and a control unit 20 (not shown). The electromagnetic coil 31 and the two permanent magnets 33 are combined with each other to form a voice coil structure. In the electromagnetic coil 31, a magnetic circuit provided inside the magnetic circuit 35 is inserted (the insertion direction is the X-axis direction), and this magnetic circuit portion is a counter magnetic pole of each permanent magnet 33. The upper part of the electromagnetic coil 31 is rotatably supported by a rotary bearing 31c. Further, a hammer 34 a is provided as a part of the electromagnetic coil 31 below the electromagnetic coil 31. At both ends in the X-axis direction on the outer periphery of the magnetic circuit 35, stoppers 34 are provided at positions where the hammer 34a can collide. The permanent magnet 33 and the stopper 34 are integrated to form a collision target.

  The magnetic field by the permanent magnet 33 is set in the horizontal direction orthogonal to the X-axis direction. Therefore, when the electromagnetic coil 31 disposed in the magnetic field is energized, the electromagnetic coil 31 moves in the positive direction of the X axis (right arrow direction) or the opposite negative direction according to the direction of the coil current. Receive the power to make. Therefore, as shown in FIG. 8A, when the electromagnetic coil 31 receives a leftward force, the electromagnetic coil 31 performs a pendulum motion on the left side, the hammer 34a collides with the left stopper 34, and the object M is moved. Move to the left. In order to repeatedly perform the operation of the actuator 3 between the states shown in FIGS. 8A and 8B, the control unit 20 changes the current supplied to the electromagnetic coil 31 with the time change shown in FIG. 9A. To control time. For example, the coil current J has a function form in which a sine function is shifted in the positive direction of the coil current J. As shown in FIG. 8A, the electromagnetic coil 31 swings to the left and collides with the left side on the positive side of the coil current J. On the negative side of the coil current J, the electromagnetic coil 31 is shown in FIG. Thus, after returning to the neutral point, the movement to the left and the collision are repeated according to the time change of the coil current J. When the operation of the actuator 3 is repeatedly performed between the states shown in FIGS. 8B and 8C to move the object M to the right, the coil current J is as shown in FIG. 9B. , The sine function is a time change in which the coil current J is shifted in the negative direction.

  The above-described actuator 3 described with reference to FIGS. 4 to 9 can be more generally expressed as follows. That is, the actuator 3 is a device that moves the object by giving an impact to the object. The actuator 3 includes an electromagnetic coil 31, a permanent magnet 33 that moves relative to the electromagnetic coil 31 by an electromagnetic action generated by energization of the electromagnetic coil 31, and a stopper 34. The stopper 34 is integrated with either the electromagnetic coil 31 or the permanent magnet 33 so as to limit the range of the relative movement to constitute a collision target. In such an actuator 3, when the electromagnetic coil 31 is energized, the impact is generated when the collision target collides with either the electromagnetic coil 31 or the permanent magnet 33 that is not integrated with the collision target. Is. FIG. 4 shows an example in which the permanent magnet 33 and the stopper 34 form a collision object. FIG. 6 shows an example in which a second permanent magnet 33 is provided as the stopper 34 and a collision object is formed by the two permanent magnets 33. Moreover, the case where a to-be-collised body is comprised by the permanent magnet 33 and the two stoppers 34 is an example of FIG. 7, FIG.

  Thus, since the impact due to the collision can be generated in any direction of the relative movement of the electromagnetic coil 31 and the permanent magnet 33, the reciprocating movement of the object M can be realized. Further, since the actuator 3 is formed by combining the single magnet coil 31 with the permanent magnet 33 and the stopper 34, the structure is small and simple. By using this actuator 3, the electric curtain 1 can be realized in a smaller size, lighter weight and lower cost than when the electric curtain 1 is driven using a motor, a driving force transmission device or the like.

(Neutral point return type impact actuator)
10, 11, and 12 show still another actuator 3. As shown in FIG. 10, the actuator 3 is integrated with an electromagnetic coil 31, a stator 35a disposed at both ends thereof, and a shaft bar 31a that reciprocally moves on the central axes of the electromagnetic coil 31 and the stator 35a. A moving mass body 3a. The moving mass body 3a performs relative movement with respect to the electromagnetic coil 31 and the stator 35a. The moving mass 3a is disposed at both ends of the shaft 31a, two permanent magnets 33 disposed on the inner diameter side of the stator 35a, an iron core 35b inserted between the permanent magnets 33, and both the permanent magnets 33. A yoke 35c, two collision head pieces 37, and an impact enhancement weight 36. The collision head piece 37 is arranged in direct contact with one yoke 35c, and the other collision head piece 37 is arranged with the collision head piece 37 interposed in the other yoke 35c. The actuator 3 further includes an outer cylinder (shield case 38) containing the electromagnetic coil 31, the stator 35a, and the moving mass 3a, and a bearing plate 39 that is disposed at both ends of the shield case 38 and supports the shaft rod 31a. I have. The electromagnetic coil 31 and the stator 35 a are fixed to the inner wall of the shield case 38. FIG. 10 shows a state where the electromagnetic coil 31 is not energized. In this state, the moving mass body 3a is located at a neutral point by the attractive force caused by the magnetic field generated by the permanent magnet 33, the iron core 35b, the yoke 35c, and the stator 35a.

  The shaft bar 31a is concentric with the electromagnetic coil 31 and the stator 35a. Each component of the moving mass 3a excluding the shaft rod 31a is disposed so as to be concentric with the shaft rod 31a, and is integrated with the shaft rod 31a. The length of the iron core 35 b is equal to the length of the electromagnetic coil 31. In other words, the iron core 35b has a length that fits between the stators 35a. In addition, the iron core 35b has a shape in which both end portions of the cylinder are provided with flange portions, and the diameter of the central portion is formed smaller than the diameter of both end portions. As a result, a magnetic circuit having a low magnetic resistance is formed between both end portions of the iron core 35b and the stators 35a adjacent thereto. The permanent magnet 33 has a ring shape and is magnetized in the thickness direction (center axis direction). The two permanent magnets 33 are arranged at both ends of the iron core 35b with the directions of the magnetic poles opposite to each other. The thickness of the permanent magnet 33 is thinner than the thickness of the stator 35a, and the total thickness of the permanent magnet 33 and the yoke 35c is thicker than the thickness of the stator 35a.

  In the neutral state shown in FIG. 10, the distances D between the two collision head pieces 37 and the bearing plates 39 facing them are equal to each other. The bearing plate 39 is a collision object that is collided by the collision head piece 37, and restricts the movement range of relative movement of the moving mass body 3a integrated with the shaft 31a with respect to the electromagnetic coil 31 and the stator 35a. That is, the movable range of the moving mass 3a is twice the distance D (see FIG. 11). This distance D is within a distance at which the moving mass body 3a can return to the neutral point by the mutual attractive force between the permanent magnet 33 and the stator 35a from the position where the moving mass body 3a collides with any of the collision head pieces 37. Is set to

  The operation principle of the actuator 3 will be described with reference to FIG. When a current is passed through the electromagnetic coil 31 in a certain direction, for example, a magnetic field is generated as schematically shown by a magnetic force line B in FIG. The magnetic field of the electromagnetic coil 31 weakens the magnetic field generated by one of the two permanent magnets 33 and increases the magnetic field generated by the other. Therefore, the magnetic field generated by the electromagnetic coil 31 causes asymmetry in the magnetic force acting on the permanent magnet 33, the iron core 35b, and the yoke 35c, and the moving mass body 3a moves as indicated by the white arrow. When a current is passed through the electromagnetic coil 31 in the direction opposite to the predetermined direction, the moving mass body 3a moves in the direction opposite to the above as shown in FIG. 11A and 11B, when the coil current is turned off and the magnetic field generated by the electromagnetic coil 31 is removed, the moving mass body 3a has the above-described figure due to the mutual attractive force between the permanent magnet 33 and the stator 35a. Return to the neutral point as shown at 10.

  A series of operations of the leftward movement by the actuator 3 will be described with reference to FIG. As shown in FIG. 12A, the actuator 3 is placed on, for example, a horizontal friction surface S via the friction plate 23. The actuator 3 and the friction plate 23 are integrated with each other. In this state, the electromagnetic coil 31 is not excited, the moving mass 3a is at the neutral point, and the left end of the friction plate 23 is at the position x0. When a current is passed through the electromagnetic coil 31, as shown in FIG. 12 (b), the moving mass 3a moves and collides with the bearing plate 39, and the friction plate 23 moves together with the actuator 3 due to the impact. The position x1 is reached. The magnitude of the impact depends on the magnitude of the current passed through the electromagnetic coil 31 and the speed of its rise, and a larger magnitude of the impact can be generated by flowing a larger current more rapidly. When the current flowing through the electromagnetic coil 31 is stopped after the collision, the moving mass 3a inside the actuator 3 returns to the neutral point as shown in FIG. Since this return movement is performed slowly by the magnetic force of the permanent magnet 33, there is no reaction that exceeds the static friction force between the friction plate 23 and the friction surface S, and the friction plate 23 does not move. Further, by setting conditions such as adjusting the magnetic force of the permanent magnet 33 and adjusting the frictional force with the friction surface S, it is possible to prevent the friction plate 23 from moving when returning to the neutral point. Thereafter, by supplying a current again to the electromagnetic coil 31, the tip of the friction plate 23 is further moved to the position x2 as shown in FIG. 12 (d). The actuator 3 intermittently moves an object (for example, the runner 12 in FIG. 1) arranged to be pushed or pulled through the object M by repeating such an operation. be able to.

(Other impact actuators)
Each actuator 3 shown above generates an impact magnetically using the electromagnetic coil 31. As another actuator, one using a piezoelectric element can be applied to the drive unit 2 of the electric curtain 1. For example, a piezoelectric element and a weight connected to the piezoelectric element are provided. By applying a time-controlled voltage to the piezoelectric element, the piezoelectric element is rapidly stretched or contracted to move the weight, and the weight is targeted. The actuator can be configured to collide with the object M.

(Modification of the first embodiment)
FIG. 13 shows a modification of the electric curtain of the first embodiment. In this electric curtain 1, the curtain rail 11 according to the first embodiment is mounted on the wall surface instead of the ceiling with the opening groove portion facing down rather than downward, and the drive unit 2 is provided on the upper side of the curtain rail 11. The point is different from the first embodiment. The clamper 4 includes a C-shaped main body portion 41, an urging portion 42 having an adjustment screw provided on the upper side of the main body portion 41, and an elastic body such as a coil spring, a leaf spring, and rubber, and a lower portion of the main body portion 41. And a rolling part having a wheel provided on the side (in the curtain rail 11, not shown). The clamper 4 is provided with an urging portion 42 and the rolling portion at a force acting portion in a so-called C clamp. The clamper 4 sandwiches the drive unit 2 together with the curtain rail 11 by an appropriate urging force by the urging unit 42 to generate a frictional force between the friction plate 23 and the upper surface S of the curtain rail 11, and is easily moved by the rolling unit. It moves along the curtain rail 11 together with the drive unit 2 depending on the nature. The drive unit 2 and the runner 12 are easily coupled with each other by sandwiching the runner 12 from the front and rear in the direction along the curtain rail 11 by a runner coupling member 24 provided in the drive unit 2. The runner 12 follows and moves. According to the electric curtain 1 of this modified example, the clamper 4 is provided independently of the runner 12, and the drive unit 2 and the runner 12 are easily coupled with each other by a simple runner coupling member 24. The electric curtain can be easily electrified.

(Other variations of the first embodiment)
14 and 15 show another modification of the electric curtain according to the first embodiment. The electric curtain 1 shown in FIG. 14 is the first embodiment in that two drive units 2 capable of self-propelling in only one direction are arranged opposite to each other and coupled to the runner 12 at the end of the curtain 11a. Unlike the electric curtain 1, the others are the same. The two drive units 2 are integrated with a common friction plate 23 (may be separate). The control unit 20 operates one of the drive units 2 in accordance with the opening or closing of the curtain 11a.

(One side drive impact actuator)
FIGS. 15A and 15B show the actuator 3 in the drive unit 2 applied to the electric curtain 1 of the modification shown in FIG. The actuator 3 is configured by arranging an electromagnetic coil 31, a conductor 32, an elastic body 30, and a stopper 30a in this order. The electromagnetic coil 31 and the stopper 30a are integrated. The actuator 3 is the same as the actuator 3 shown in FIG. 2 except for one (right) electromagnetic coil 31 and conductor 32, and the operation of the left set is the same. The single-side drive actuator 3 can be configured to be smaller than the double-side drive (reciprocating drive) actuator 3, so that it has the flexibility to be distributed in a narrow space in the electric curtain 1.

(Second Embodiment)
FIG. 16 shows an electric curtain according to the second embodiment. In this electric curtain 1, the drive unit 2 includes a battery 10a as a power source 10 for operating the impact actuator 3, and moves together with the battery 10a. The control unit 20 receives an instruction to stop opening and closing by operating the operating device 20a by the operator, controls the driving unit 2 according to the instruction, and performs an opening / closing operation of the curtain 11a. The electric curtain 1 of the second embodiment is different from the electric curtain of the first embodiment described above in that the battery 10a that moves together with the drive unit 2 is provided as a power source. Since the electric curtain 1 of the present embodiment does not use the power supply 10 that is fixedly arranged outside, no power supply wiring is required. Therefore, such wiring work is unnecessary, and the drive unit 2 can be easily attached to the curtain rail 11. And can be easily installed and operated. By providing the operation device 20a close to the drive unit 2, for example, immediately below the drive unit 2, the drive unit 20a can be controlled without performing operation signal wiring.

(Modification of the second embodiment)
FIG. 17 shows a modification of the second embodiment. The electric curtain 1 according to this modified example includes a wireless remote controller 5 for remotely operating the drive unit 2 in the electric curtain 1 of the second embodiment, and a signal reception for receiving and processing an operation signal from the remote controller 5. The unit 25 is provided. The remote controller 5 replaces or adds to the operation device 20a, and a plurality of buttons 5a for operation for instructing an opening / closing operation or a stop operation of the curtain 11a and an instruction signal to the drive unit 2. For example, a transmitter 5b that transmits by an infrared signal is provided. When the signal from the transmitting unit 5b is an infrared signal, the signal receiving unit 25 includes a circuit having a general configuration including an infrared receiving element. According to such an electric curtain 1, wiring from the operation device 20a (controller) to the drive unit 2 is not necessary. In addition, wireless remote control of the electric curtain 1 by the remote controller 5 becomes possible. For example, the electric curtain 1 on the window side can be opened and closed from a bed at a position away from the window. In addition, a timer function and other electric circuits and operation buttons are incorporated in the remote controller 5, and a signal for opening or closing the electric curtain 1 is automatically transmitted from the remote controller 5 to the drive unit 2 at a predetermined time or after a predetermined time. Thus, the user-friendly electric curtain 1 can be realized.

(Other variations of the second embodiment)
FIGS. 18A and 18B show another modification of the second embodiment. As shown in FIG. 18 (a), the electric curtain 1 of this modification is a double-open curtain, and a drive unit 2 is provided at the open / close ends of both curtains 11a, and a position sensor 26 is provided in each drive unit 2. ing. The control unit 20 performs movement control of the drive unit 2 based on the position signal from the position sensor 26. For example, the position sensor 26 detects the presence or absence of light and darkness and light reflection such as uneven shapes, light and dark codes, and binary reflectance pattern codes that are arranged in advance along the curtain rail 11 to change the optical signal corresponding to the position change. It is comprised by the light reflection type sensor, counter, etc. which count. Further, the position sensor 26 includes a light emitting / receiving mechanism, reads a minute change of the surface by reflection of light from the curtain rail 11 as an image, and detects movement by calculating a shift of the image accompanying movement of the sensor. Alternatively, the sensor may be configured using a sensor that uses the operating principle of an optical mouse. In this case, it is not necessary to arrange an uneven shape, a light / dark code, a binary reflectance pattern code, or the like along the curtain rail 11 in advance. In addition, the position sensor 26 is configured to include a rotating body such as a wheel or a ball that mechanically rotates with the movement of the driving unit 2 and to determine the moving distance and position of the driving unit 2 from the rotational speed of the rotating body. May be. In order to acquire the position information where the drive unit 2 has stopped in the middle of opening and closing, for example, a storage device for storing the position information is provided, and the storage information initialization process and the origin return process are performed in the fully open state or the fully closed state. You can do it. Further, for example, the position sensor 26 may be configured to be able to read the absolute position along the curtain rail 11. For example, the absolute position may be described on the curtain rail 11 and the position sensor 26 may read the description.

  The movement control of the drive unit 2 based on the position signal is, for example, a control of the time target control method so that the control unit 20 includes a time measurement unit and moves in a movement section with a known distance in a predetermined time. Good. According to the movement control performed with such a position sensor 26, a predetermined operation is performed in a predetermined time without referring to the position information with respect to each other without considering the control state of the mutual drive unit 2 in the double curtain. Opening / closing control can be performed through the confirmation position. As a result, the double-open electric curtain 1 can be opened and closed while making the left and right mutual open / close positions correspond to each other. Therefore, the open or close operation can be ended simultaneously, or the close operation or open operation can be ended at a predetermined position. Can do. For example, as shown in FIG. 18B, when the electric curtain 1 is closed, the left and right curtains 11a arrive at the predetermined position P without delay, and the magnets 15 provided in the leading runner are attracted to each other to curtain the curtain. 11a can be closed. According to this modification, the operator and the observer can open and close the curtain 11a without feeling uncomfortable with the movement of the curtain 11a with respect to the opening and closing operation of the electric curtain 1.

  Next, still another modification of the second embodiment will be described with reference to FIGS. 18 (a) and 18 (b). In this modification, the drive unit 2 includes a speed sensor (not shown), and the control unit 20 controls movement of the drive unit 2 based on a speed signal from the speed sensor. The speed sensor can be configured to obtain the speed signal from the time change rate of the position by the control unit 20 processing the position information from the position sensor 26 using the position sensor 26 described above. Further, an acceleration sensor may be provided, and the control unit 20 may obtain the speed based on acceleration information from the acceleration sensor. Note that the speed information necessary for the electric curtain 1 is not the momentary speed of the driving unit 2 but, for example, the average speed during movement due to one or more occurrences of impact. By obtaining such an average speed, for example, when the double curtain as shown in FIGS. 18A and 18B is opened and closed, the moving speed control of the drive unit 2 is performed so as to eliminate the difference between the target speed and the actually measured speed. To maintain the target speed.

  The movement speed of the drive unit 2 can be controlled by changing the input voltage in the input power to the actuator 3, the pulse time width for generating an impact, the number of times the impact is generated per unit time, and the like. Can be slow. Such control is performed in the control unit 20 based on the position signal from the position sensor 26, the speed information from the speed sensor, and the target position and target speed. The target position and target speed are, for example, numerical values preset in the control unit 20 in advance, numerical values based on an operation instruction to the control unit 20 from the operating device 20a or the remote controller 5 (both not shown), and the like. By performing such movement control, even when the resistance force against the movement of the drive unit 2 changes due to the change in the position of the surface state of the curtain rail 11, the drive unit 2 is moved at a predetermined constant speed, The curtain 11a can be opened and closed at a constant speed. According to this modification, for example, when the opening / closing speed becomes slow due to an increase in the frictional resistance between the friction plate of the drive unit 2 and the curtain rail 11 or the addition of resistance due to an external force, a decrease in the speed is detected and input. The opening / closing speed can be made to follow the set value by changing the electric power. Further, in the double opening curtain, the two curtains 11a can be opened and closed while maintaining the mutual position of the curtains 11a.

  The present invention is not limited to the above-described configuration, and various modifications can be made. For example, it can be set as the structure which mutually combined the structure of each embodiment mentioned above and its modification. Further, the curtain rail 11 is not limited to the C-shaped section described above, and may be any one that can hold the curtain and guide its movement, such as a rod-shaped, plate-shaped, or wire-shaped one. The driving unit may move on a guide rail provided separately from the curtain rail. Further, the drive unit is not limited to the one that moves along the curtain rail, and may be any unit that can move the curtain by opening and closing the drive unit. Therefore, for example, a configuration in which the runner and the drive unit are connected with a string to open and close the curtain can be employed. In this case, the drive unit can be moved in the direction orthogonal to the curtain rail using a pulley for changing the drive power direction, or the drive unit can be moved in the direction opposite to the direction of movement of the runner. . Further, the curtain rail is not limited to a linear shape, and may be, for example, an arc shape or other arbitrary shape. The electric curtain of the present invention is not limited to a flexible curtain such as a cloth curtain, but can be applied to a general opening / closing device that opens and closes along a curtain rail, such as an accordion curtain or a folding curtain.

DESCRIPTION OF SYMBOLS 1 Electric curtain 10 Power supply 10a Battery 11 Curtain rail 11a Curtain 12 Runner 2 Drive part 3 Impact actuator (actuator)
20 control unit 25 signal receiving unit 26 position sensor 4 clamper 5 remote control

Claims (8)

In an electric curtain including a drive unit that opens and closes a curtain that can be opened and closed along a curtain rail, and a control unit that controls electric power supplied to the drive unit.
The electric curtain includes an impact actuator that generates an impact by applying electric power and moves with the drive unit by the impact force.   The electric curtain according to claim 1, wherein the driving unit moves together with a runner that moves by hanging the curtain.   The electric curtain according to claim 2, further comprising a clamper that generates a frictional force between the drive unit and the curtain rail to limit a movement direction of the drive unit in one direction along the curtain rail.   The electric curtain according to any one of claims 1 to 3, wherein the control unit controls a moving speed of the driving unit by controlling electric power.   The electric curtain according to any one of claims 1 to 4, wherein the driving unit includes a battery as a power source and moves together with the battery. A remote control for remotely operating the drive unit;
The electric curtain according to any one of claims 1 to 5, wherein the control unit includes a signal receiving unit that receives an operation signal from the remote controller. The drive unit includes a position sensor,
The electric curtain according to claim 1, wherein the control unit performs movement control of the driving unit based on a position signal from the position sensor. The drive unit includes a speed sensor,
The electric curtain according to any one of claims 1 to 7, wherein the control unit performs movement control of the driving unit based on a speed signal from the speed sensor.

Images