window

Abstract

To provide a window with a convenient crescent.SOLUTION: A window includes a frame, a sliding sash, and a crescent which restrains the sliding sash. The crescent has an electric motor which drives a crescent lock to be locked by rotation in one direction and drives the crescent lock to be unlocked by rotation in the opposite direction, and a transmission mechanism which transmits a driving force of the electric motor to the crescent. The transmission mechanism releases the transmission of the driving force when the crescent is in a locked state by rotation in one direction of the electric motor, automatically starts the transmission of the driving force when the electric motor is rotated in the opposite direction in the locked state, automatically releases the transmission of the driving force when the crescent is in an unlocked state by rotation in the opposite direction of the electric motor, and automatically starts the transmission of the driving force when the electric motor is rotated in one direction in the unlocked state.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a window such as a sliding door installed in a building. [Background technology]

[0002] Windows with crescents are known in the art. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-115451 Summary of the Invention [Problem to be solved by the invention]

[0004] The window crescent described in the above Patent Document 1 does not take into consideration both electric and manual operation. [Means for solving the problem]

[0005] In one embodiment, the window comprises a frame body installed in an opening of a building, a shoji screen that is arranged on the inner circumference of the frame body and can be slid open and closed, and a crescent that holds the shoji screen in a closed state. The crescent has a crescent lock that is installed on the shoji screen and is rotated, a crescent receiver that engages with the crescent lock to hold the shoji screen open and closed, an electric motor that locks the crescent lock by rotating it in one direction and unlocks it by rotating it in the opposite direction, and a transmission mechanism that transmits the driving force of the electric motor to the crescent lock. The transmission mechanism automatically releases the transmission of the driving force when the electric motor rotates in one direction, locks the crescent lock, and automatically starts transmitting the driving force when the electric motor rotates in the opposite direction in the locked state. The transmission mechanism automatically releases the transmission of the driving force when the crescent lock is unlocked by rotating the electric motor in the opposite direction, and automatically starts transmitting the driving force when the electric motor rotates in one direction in the unlocked state. [Effects of the Invention]

[0006] According to the fixture of this embodiment, it is possible to provide a window with a crescent that is easy to use and can be locked and unlocked electrically, and can also be easily operated manually. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a diagram illustrating the overall configuration of a sliding window according to an embodiment of the present invention. [Figure 2] 1A and 1B are diagrams of a crescent lock according to one embodiment, in which FIG. 1A shows the locked state and FIG. 1B shows the unlocked state. [Figure 3] FIG. 2 is a diagram showing a drive mechanism of the electric crescent according to the embodiment, and is a front view of the electric crescent. [Figure 4] 1A and 1B are diagrams showing a drive mechanism of an electric crescent according to one embodiment, in which (a) and (b) are explanatory diagrams of a part of the drive mechanism, and (c), (d), and (e) are explanatory diagrams of components that make up the drive mechanism. [Figure 5] 1A and 1B are diagrams showing a drive mechanism of an electric crescent according to one embodiment, in which FIG. 1A is a partial explanatory diagram of the drive mechanism, and FIGS. 1B, 1C, and 1D are explanatory diagrams of components that constitute the drive mechanism. [Figure 6] FIG. 10 is a diagram illustrating the unlocked state of the drive mechanism of the electric crescent according to the embodiment. [Figure 7] 10A and 10B are diagrams illustrating the driving mechanism of the electric crescent of the embodiment when the driving mechanism is in a locked state from an unlocked state. [Figure 8] FIG. 10 is a diagram illustrating a locked state of the drive mechanism of the electric crescent according to the embodiment. [Figure 9] 10A and 10B are diagrams illustrating the driving mechanism of the electric crescent of the embodiment when the driving mechanism is unlocked from the unlocked state. DETAILED DESCRIPTION OF THE INVENTION

[0008] An embodiment of the window will be described with reference to the drawings, using an example of a sliding window that can be opened and closed electrically. As shown in Figure 1, the sliding window of this embodiment comprises a frame body 1 installed in an opening of a building, inner and outer shoji screens 2 and 3 arranged on the inner periphery of the frame body 1 and capable of sliding open and closed, an electric opening and closing device 4 that opens and closes the inner shoji screen 2, and an electric crescent 5 that holds the inner and outer shoji screens 2 and 3 in a closed position.

[0009] The frame body 1 is formed by assembling an upper frame 11, a lower frame 12, and left and right vertical frames 13, 14, all of which are made of a metal material such as aluminum, around the four periphery. The inner and outer shoji screens 2, 3 are formed by attaching a panel of glass or the like to the inner periphery of a frame body consisting of an upper frame 21, 31, a lower frame 22, 32, a left vertical frame 23, 33, and a right vertical frame 24, 34, all of which are made of a metal material such as aluminum.

[0010] The electric opening and closing device 4 is provided on the indoor side of the upper frame 11, and can open and close the inner shoji screen 2 by the driving force of an electric actuator 4a. The configuration of the electric opening and closing device 4 may be a known device and is not limited in any way. The electric crescent 5 is provided at the joining part of the inner and outer shoji screens 2, 3, and can lock the window using the driving force of an electric motor.

[0011] The electric opening / closing device 4 and the electric crescent 5 are connected to a control unit 6, and can be driven by a user operating a controller 7 placed on the wall of the building or the like. The window may be configured to automatically operate the electric opening / closing device 4 and the electric crescent 5 based on data detected by various detection means such as an air temperature sensor 61 and a wind force sensor 62 connected to the control unit 6 or a timer built into the control unit 6.

[0012] The electric crescent 5 of this embodiment can perform locking or unlocking operations using an electric motor, and also allows smooth manual locking or unlocking operations, making it possible to provide a user-friendly crescent. The electric crescent 5 of this embodiment will be specifically described below.

[0013] -Electric Crescent- The electric crescent 5 has a main body portion fixed to the outer peripheral surface of the left vertical frame 23 of the inner shoji screen 2, and a crescent lock 50 supported on a pivot shaft 542a protruding from one side of the main body portion. The main body of the electric crescent 5 has a rectangular case 5a, and a drive mechanism for driving the crescent lock 50 is disposed inside the case 5a.

[0014] The crescent lock 50 has a hook portion 50a and a knob portion 50b, and rotates around a pivot 542a, and can be switched between a locked state in which the hook portion 50a protrudes outside the case 5a, as shown in Figure 2(a), and an unlocked state in which the hook portion 50a does not protrude outside the case 5a, as shown in Figure 2(b).

[0015] When the inner and outer screens 2 and 3 are closed, the electric crescent 5 can be switched to the locked state, causing the hook portion 50a of the crescent lock 50 to engage with the crescent receiver (not shown) fixed to the right vertical frame 34 of the outer screen 3, thereby locking the window. The hook portion 50a and crescent receiver of the crescent lock 50 of the electric crescent 5 have the same configuration as a known crescent lock, so detailed description thereof will be omitted. The configuration of the drive mechanism of the electric crescent 5 will be described in detail below.

[0016] As shown in Figure 3, the drive mechanism of the electric crescent 5 includes an electric motor 51, a transmission mechanism that transmits the drive force of the electric motor 51 to the crescent lock 50, and a switch device 55 that turns the drive of the electric motor 51 on and off by outputting the lock / unlock state to the control unit 6.

[0017] The transmission mechanism includes a clutch gear device 52 that disconnects the transmission of the driving force of the electric motor 51, a clutch release device 53 that transmits the driving force by the clutch gear device 52 and disconnects (releases) the transmission of the driving force by the clutch gear device 52, and a gear device 54 that transmits the driving force to the rotating shaft 542a of the crescent lock 50.

[0018] As shown in FIGS. 3 and 4(b), the electric motor 51 has a vertical rotation shaft 51a and is disposed inside the case 5a of the electric crescent 5. The electric motor 51 has a first bevel gear 511 attached to a rotary shaft 51a, and the first bevel gear 511 meshes with a second bevel gear 521 of the clutch gear device 52, which will be described later.

[0019] As shown in Figures 3 and 4, the clutch gear device 52 has a second bevel gear 521 rotatably supported on a horizontal (viewing direction) shaft 52a provided on the case 5a, a clutch gear 522 integrally provided on one side of the second bevel gear 521, and a gear guide plate 523 provided on the opposite side of the clutch gear 522 from the second bevel gear 521.

[0020] The second bevel gear 521 meshes with the first bevel gear 511 attached to the electric motor 51 to convert the rotation of the electric motor 51 around the vertical axis into rotation around the horizontal axis.

[0021] As shown in Figures 4(d) and (e), the gear guide plate 523 is a roughly oval plate-shaped member, with an upper groove portion 523a provided in the upper central portion and a lower groove portion 523b provided in the lower central portion, and with ear portions 523c and 523d ​​on both sides of the upper groove portion 523a.

[0022] The gear guide plate 523 supports a left clutch gear 524 and a right clutch gear 525 on the sides of the clutch gear 522 of both ears 523c, 523d, respectively, and both the left clutch gear 524 and the right clutch gear 525 are in mesh with the clutch gear 522.

[0023] The gear guide plate 523 is disposed between the clutch gear 522 and the inner surface of the case 5a and is supported so as to be freely rotatable about the shaft 52a, but a restricting pin 5b is provided on the inner surface of the case 5a so as to be positioned within the lower groove portion 523b of the gear guide plate 523, and the left and right walls of the lower groove portion 523b abut against the restricting pin 5b, thereby restricting the rotation range.

[0024] In the clutch gear device 52, a spring member is arranged on the opposite side of the gear guide plate 523 from the clutch gear 522, specifically between the case 5a and the gear guide plate 523, and presses the gear guide plate 523 against the side of the clutch gear 522.

[0025] When the clutch gear 522 rotates, the gear guide plate 523, which is pressed against the clutch gear 522 by a spring member, rotates together with the rotation of the clutch gear 522 due to friction between the side of the clutch gear 522 and the gear guide plate 523, and the left clutch gear 524 and right clutch gear 525 also rotate. The configuration for co-rotating the gear guide plate 523 and the clutch gear 522 is not limited in any way.

[0026] The gear guide plate 523, which rotates in accordance with the rotation of the clutch gear 522, rotates until either the left clutch gear 524 or the right clutch gear 525 meshes with the clutch release gear 531 of the clutch release device 53 described later, and further rotation is restricted when the restricting pin 5b abuts against either the left or right wall of the lower groove portion 523b.

[0027] The left clutch gear 524 or the right clutch gear 525 meshed with the clutch release gear 531 of the clutch release device 53 transmits the rotational force of the clutch gear 522 to the clutch release gear 531 .

[0028] As shown in Figures 3 and 5, the clutch release device 53 has a clutch release gear 531 that is rotatably supported on a horizontal (viewing direction) shaft 53a provided on the case 5a, and a clutch release plate 532 that is rotatably supported on the shaft 53a and is arranged overlapping the clutch release gear 531.

[0029] The clutch release gear 531 is provided with an operating protrusion 531a on the surface on which the clutch release plate 532 is placed.

[0030] As shown in Figure 5(c), the clutch release plate 532 is formed by removing half of the outer periphery of the disc-shaped plate, specifically from 7:30 to 1:30 when viewed from the front, to provide a missing portion 532b, and a lever portion 532a protrudes downward at the 6 o'clock position on the outer periphery of the plate.

[0031] The missing portion 532b of the clutch release plate 532 is the movement area of ​​the operating protrusion 531a of the clutch release gear 531 when the clutch release plate 532 is placed on top of the clutch release gear 531, and the walls on both sides of the missing portion 532b form a lower abutment surface 532c and an upper abutment surface 532d against which the operating protrusion 531a abuts.

[0032] The lever portion 532a of the clutch release plate 532 is positioned within the upper groove portion 523a of the gear guide plate 523 of the clutch gear device 52, and when the clutch release plate 532 rotates, the lever portion 532a presses the side wall of the upper groove portion 523a, causing the gear guide plate 523 to rotate.

[0033] In the clutch release device 53, when the clutch release gear 531 rotates clockwise, the operating protrusion 531a moves through the cutout portion 532b of the clutch release plate 532 and abuts against the upper abutment surface 532d, thereby rotating the clutch release plate 532 clockwise. Conversely, when the clutch release gear 531 rotates counterclockwise, the operating protrusion 531a moves through the cutout portion 532b of the clutch release plate 532 and abuts against the lower abutment surface 532c, rotating the clutch release plate 532 counterclockwise.

[0034] The clutch release plate 532 rotated clockwise or counterclockwise pushes the upper groove portion 524a of the gear guide plate 523 in one direction by the lever portion 532a, causing the gear guide plate 523 to rotate around the shaft 52a.

[0035] The clutch release gear 531 of the clutch release device 53 meshes with a center gear 541 of the gear device 54 (described later), and transmits the driving force transmitted from the left clutch gear 524 or the right clutch gear 525 to the gear device 54 .

[0036] As shown in Figures 3 and 5(a), the gear device 54 has a center gear 541 that is rotatably supported on a horizontal (front direction) shaft 541a provided on the case 5a, and an operating gear 542 that meshes with the center gear 541. The operating gear 542 has a rotating shaft 542a fixed thereto so as not to rotate, and the rotating shaft 542a fixed to the operating gear 542 protrudes from one side of the case 5a to the outside of the case, and the crescent lock 50 of the electric crescent 5 is attached to the rotating shaft 542a.

[0037] The center gear 541 meshes with the operating gear 542 and also meshes with a switch gear 551 of the switch device 55 (described later), thereby transmitting the driving force to the switch device 55 .

[0038] As shown in Figures 3 and 5(a), the switch device 55 has a switch gear 551 that is rotatably supported on a horizontal (viewing direction) axis 55a provided on the case 5a, a plate-shaped switch member 552 that is fixed to and stacked on the switch gear 551 and rotates together with the switch gear 551, an unlocking switch 553 that is turned ON / OFF by the switch member 552, and a locking switch 554.

[0039] Switch member 552 is a drop-shaped plate-like member, and its outward-extending arm portion is provided with trigger protrusion 552a that operates switch pieces 553a, 554a of unlock switch 553 or lock switch 554. Switch member 552 may be formed integrally with switch gear 551.

[0040] The switch device 55 detects that the unlocked state has been achieved by the switch member 552 rotating and causing the trigger protrusion 552a to operate the switch piece 553a of the unlock switch 553, and detects that the locked state has been achieved by operating the switch piece 554a of the lock switch 554, and outputs each of these to the control unit 6 of the electric crescent 5.

[0041] The configuration of the drive mechanism of the electric crescent 5 has been described above. Next, the operation of the drive mechanism of the electric crescent 5 will be described. (Unlocked) The unlocked state of the electric crescent 5 of this embodiment will be described with reference to FIG. In the unlocked state, the hook portion 50a of the crescent lock 50 of the electric crescent 5 does not protrude from the side surface of the case 5a and is not engaged with the crescent receiver (not shown).

[0042] In the clutch gear device 52, the gear guide plate 523 is in a neutral state, the regulating pin 5b is positioned at the center position within the lower groove portion 523b, and neither the left clutch gear 524 nor the right clutch gear 525 is engaged with the clutch release gear 531 of the clutch release device 53.

[0043] In the clutch release device 53, the clutch release plate 532 is in a neutral state, and the operating protrusion 531a provided on one side of the clutch release gear 531 is in a lower position, i.e., located near the abutment surface 532c below the missing portion 532b of the clutch release plate 532.

[0044] In the switch device 55, the trigger protrusion 552a of the switch member 552 abuts against the switch piece 553a of the unlock switch 553, and an output is sent to the control unit 6 of the electric crescent 5 indicating that the switch device 55 is in the unlocked state.

[0045] In the unlocked state, the pivot shaft 542a supporting the crescent lock 50 is not connected to the electric motor 51 because the left clutch gear 524 or the right clutch gear 525 of the clutch gear device 52 is not engaged with the clutch release gear 531 of the clutch release device 53, and the crescent lock 50 can be locked without resistance from the electric motor 51 by pinching the knob portion 50b of the crescent lock 50 and rotating it around the pivot shaft 542a.

[0046] When the crescent lock 50 is manually locked, the trigger protrusion 552a of the switch member 552 abuts against the switch piece 554a of the locking switch 554, and the switch device 55 outputs to the control unit 6 of the electric crescent 5 that the locking state is established.

[0047] (locked by electric motor) The operation of the electric crescent 5 of this embodiment when it is locked by the electric motor 51 from the unlocked state shown in FIG. 6 will be described with reference to FIG.

[0048] When the electric motor 51 is rotated in one direction (left rotation) by operating the controller 7 from the unlocked state, the second bevel gear 521 and the clutch gear 522 meshing with the first bevel gear 511 of the electric motor 51 rotate clockwise x1. As the clutch gear 522 rotates clockwise x1, the gear guide plate 523 rotates together with the clutch gear 522, and eventually the left clutch gear 524 supported by the gear guide plate 523 engages with the clutch release gear 531 of the clutch release device 53, and the transmission of driving force begins.

[0049] At the same time that the left clutch gear 524 engages with the clutch release gear 531 of the clutch release device 53, the regulating pin 5b provided on the case 5a abuts against the right wall of the lower groove portion 523b of the gear guide plate 523, restricting further rotation of the gear guide plate 523. Gear guide plate 523, whose rotation is restricted, does not rotate together with clutch gear 522 due to slippage between gear guide plate 523 and clutch gear 522, and only clutch gear 522 continues to rotate.

[0050] The clockwise rotation x1 of the clutch gear 522 is transmitted to the left clutch gear 524 as a counterclockwise rotation x2, and is further transmitted to the clutch release gear 531 of the clutch release device 53 as a clockwise rotation x3.

[0051] The clutch release gear 531, rotating clockwise x3, transmits counterclockwise rotation x4 to the center gear 541 of the gear device 54. At the same time, the operating protrusion 531a of the clutch release gear 531 moves upward through the notched portion 532b of the clutch release plate 532 by the rotation x3, approaching the upper abutment surface 532d.

[0052] The center gear 541 of the gear device 54, to which the counterclockwise rotation x4 is transmitted, transmits it to the operating gear 542 as a clockwise rotation x5, and also transmits it to the switch gear 551 of the switch device 55 as a clockwise rotation x6. When the operating gear 542 rotates clockwise x5, the hook portion 50a of the crescent lock 50 fixed to the rotation shaft 542a protrudes from the side surface of the case 5a and engages with the crescent receiver to lock it.

[0053] In the switch device 55, as the switch gear 551 rotates clockwise x6, the trigger protrusion 552a of the switch member 552 moves away from the unlock switch 553 and approaches the switch piece 554a of the lock switch 554 (this is the state shown in FIG. 7).

[0054] As the electric motor 51 continues to rotate in one direction (left rotation) from the state shown in Figure 7, the operating protrusion 531a of the clutch release gear 531 eventually comes into contact with the abutment surface 532d above the notched portion 532b of the clutch release plate 532, causing the clutch release plate 532 to rotate clockwise.

[0055] The clutch release plate 532 rotating clockwise pushes the upper groove portion 523a of the gear guide plate 523 counterclockwise with the downwardly protruding lever portion 532a, returning the gear guide plate 523 of the clutch gear device 52 to the neutral position. When the gear guide plate 523 returns to the neutral position, the left clutch gear 524 and the clutch release gear 531 are disengaged, and the driving force of the electric motor 51 is no longer transmitted, and the drive of the clutch release gear 531 stops.

[0056] At the same time that the gear guide plate 523 returns to the neutral position and the left clutch gear 524 and the clutch release gear 531 are disengaged, the trigger protrusion 552a of the switch device 55 comes into contact with the switch piece 554a of the locking switch 554, and a signal indicating that locking is complete (locked state) is output to the control unit 6 of the electric crescent 5, which then stops the rotation of the electric motor 51 (FIG. 8).

[0057] In the locked state shown in Figure 8, the rotating shaft 542a supporting the crescent lock 50 is not connected to the electric motor 51 because the left clutch gear 524 and the clutch release gear 531 are disengaged, and the crescent lock 50 can be unlocked by pinching the knob portion 50b and rotating it without encountering resistance from the electric motor 51.

[0058] When the crescent lock 50 is manually unlocked, the trigger protrusion 552a of the switch member 552 abuts against the switch piece 553a of the unlocking switch 553, and the switch device 55 outputs to the control unit 6 of the electric crescent 5 that the lock is unlocked.

[0059] (Unlocking by electric motor) The operation of the electric crescent 5 of this embodiment when it is unlocked by the electric motor 51 from the locked state shown in FIG. 8 will be described with reference to FIG.

[0060] When the electric motor 51 is rotated in the other direction (rightward) by operating the controller 7 from the locked state, the second bevel gear 521 and the clutch gear 522 meshing with the first bevel gear 511 of the electric motor 51 rotate counterclockwise y1. As the clutch gear 522 rotates counterclockwise y1, the gear guide plate 523 rotates together with the clutch gear 522, and eventually the right clutch gear 525 supported by the gear guide plate 523 meshes with the clutch release gear 531 of the clutch release device 53, and the transmission of driving force begins.

[0061] When the right clutch gear 525 meshes with the clutch release gear 531 of the clutch release device 53, the regulating pin 5b provided on the case 5a abuts against the left wall of the lower groove portion 523b of the gear guide plate 523, thereby regulating the rotation of the gear guide plate 523. Gear guide plate 523, whose rotation is restricted, does not rotate together with clutch gear 522 due to slippage between gear guide plate 523 and clutch gear 522, and only clutch gear 522 continues to rotate.

[0062] The counterclockwise rotation y1 of the clutch gear 522 is transmitted to the right clutch gear 525 as a clockwise rotation y2, and is further transmitted to the clutch release gear 531 of the clutch release device 53 as a counterclockwise rotation y3.

[0063] The clutch release gear 531, rotating counterclockwise (y3), transmits clockwise rotation (y4) to the center gear 541 of the gear device 54. At the same time, the operating protrusion 531a of the clutch release gear 531 moves downward through the notched portion 532b of the clutch release plate 532 by the rotation (y3) and approaches the lower abutment surface 532c.

[0064] The center gear 541 of the gear device 54, to which the clockwise rotation y4 is transmitted, transmits it to the operating gear 542 as a counterclockwise rotation y5, and also transmits it to the switch gear 551 of the switch device 55 as a counterclockwise rotation y6. As the operating gear 542 rotates counterclockwise y5, the hook portion 50a of the crescent lock 50 fixed to the rotation shaft 542a is disengaged from the crescent receiver, and the hook portion 50a is accommodated within the area of ​​the case 5a.

[0065] In the switch device 55, the counterclockwise rotation y6 of the switch gear 551 causes the trigger protrusion 552a of the switch member 552 to move away from the lock switch 554 and approach the switch piece 553a of the unlock switch 553 (this is the state shown in FIG. 9).

[0066] As the electric motor 51 continues to rotate in the other direction (clockwise rotation) from the state shown in Figure 9, the operating protrusion 531a of the clutch release gear 531 eventually comes into contact with the abutment surface 532c below the notched portion 532b of the clutch release plate 532, causing the clutch release plate 532 to rotate counterclockwise.

[0067] The clutch release plate 532 rotating counterclockwise pushes the upper groove portion 523a of the gear guide plate 523 clockwise with the downwardly protruding lever portion 532a, returning the gear guide plate 523 of the clutch gear device 52 to the neutral position. When the gear guide plate 523 returns to the neutral position, the right clutch gear 525 and the clutch release gear 531 are disengaged, and the driving force of the electric motor 51 is no longer transmitted, and the drive of the clutch release gear 531 stops.

[0068] At the same time that the gear guide plate 523 returns to the neutral position and the right clutch gear 525 and the clutch release gear 531 are disengaged, the trigger protrusion 552a of the switch device 55 comes into contact with the switch piece 553a of the unlocking switch 553, and a signal indicating that unlocking has been completed (that the vehicle is in the unlocked state) is sent to the control unit 6 of the electric crescent 5, which then stops the rotation of the electric motor 51 (FIG. 6). The operation of the drive mechanism of the electric crescent 5 has been described above.

[0069] -Effects of the window of the embodiment- As described above, the window of this embodiment is easy to use because it is equipped with an electric crescent that can be locked and unlocked electrically. Furthermore, by using the electric crescent together with an electric window opening / closing device, the window can be opened, closed, and locked automatically based on weather conditions, time, etc., and it is possible to prevent forgetting to lock the window.

[0070] In addition, the transmission mechanism that transmits the driving force of the electric motor to the crescent is automatically disconnected when the electric motor has completed locking or unlocking the crescent, and then automatically reconnects when the unlocking or locking operation is performed, making automatic locking or unlocking possible.Therefore, in the locked or unlocked state, the electric motor is not connected to the crescent, and manual locking and unlocking is possible without resistance from the electric motor.

[0071] The window type is not limited to sliding windows, but may be any type of window as long as no contradictions occur, such as an opening / closing window with a shoji screen that slides left and right or an opening / closing window with a shoji screen that slides up and down.

[0072] It goes without saying that the above embodiments do not limit the invention described in the claims, but are treated as examples. [Explanation of symbols]

[0073] 1:Frame body 2: Inner Shoji 3: Outer Shoji 5: Electric Crescent 50: Crescent Tablets 51: Electric motor 52: Clutch gear device (transmission mechanism) 53: Clutch release device (transmission mechanism) 54: Gear device (transmission mechanism) 55: Switching device

Claims

[Claim 1] The device comprises a frame body provided at an opening of a building, a sliding door that is disposed on the inner periphery of the frame body and can be opened and closed, and a crescent that restrains the door in a closed state. The crescent includes a crescent lock that is attached to the shoji screen and rotated, a crescent receiver that engages with the crescent lock to restrict the opening and closing of the shoji screen, an electric motor that locks the crescent lock by rotating it in one direction and unlocks it by rotating it in the opposite direction, and a transmission mechanism that transmits the driving force of the electric motor to the crescent. The transmission mechanism automatically releases the transmission of driving force when the crescent is locked by rotating the electric motor in one direction, and automatically starts transmitting driving force when the electric motor rotates in the opposite direction in the locked state; the transmission mechanism automatically releases the transmission of driving force when the crescent is unlocked by rotating the electric motor in the opposite direction, and automatically starts transmitting driving force when the electric motor rotates in one direction in the unlocked state.

Images