JP5235779B2 - Louver opening and closing device - Google Patents

Description

  The present invention relates to an opening / closing device for a louver in a louver window which is provided in an opening of a window or the like in a building and performs light shielding, daylighting, ventilation, soundproofing, crime prevention and the like.

  Conventionally, as a louver window as described above, a plurality of louvers in which both end shafts are rotatably supported in the vertical frame on both sides of the window frame are arranged in parallel in the window frame, and these louvers are connected to a link mechanism. There is widely known a structure in which all the louvers are opened and closed at the same time by being linked so as to be linked together and by operating this link mechanism manually or electrically. Furthermore, in the above manual opening / closing operation of the louver, there is a problem that it is troublesome because the operation handle has to be rotated many times in order to fully open or close it. There is a problem that the louver cannot be opened and closed when the power supply from the power source is cut off, such as a power failure or battery exhaustion.

  For this reason, for example, as described in Patent Document 1, a louver window configured to open and close the louver manually or electrically has been developed. As an opening / closing device for the louver in the louver window, an electric motor is disposed on one side vertical frame of the window frame, and a worm is fixed to a rotating shaft of the electric motor, and an arm is projected to a worm gear meshed with the worm. The arm is connected to the link mechanism via a movable arm, and a manual handle mounting angular shaft is provided on the distal end surface of the worm.

  With this configuration, when the electric motor is operated, the worm gear meshed with the worm is rotated from the worm, and the link mechanism is operated via the arm by the rotation to open and close all the louvers at once. In addition, if the manual handle is connected to the square shaft protruding from the tip of the worm and is turned by hand, the worm can be rotated to open and close the louver in the same manner as described above.

Japanese Utility Model Publication No. 6-40873

  However, according to the louver opening and closing device configured as described above, in order to manually open and close the louver when the electric motor becomes inoperable due to a power failure or battery exhaustion, the louver is protruded from the front end surface of the worm. In addition to having to provide a separate storage area for this manual handle, it is necessary to connect the manual handle to the above-mentioned square shaft to rotate the manual handle. In order to enable this, a relatively wide space is required, and the opening / closing device cannot be disposed in the window frame, which may affect the installation of the louver window.

  In addition, since the manual handle is connected to the worm side fixed to the rotating shaft of the electric motor to open and close the louver, not only the electric motor may be overloaded but also broken, As described above, the operation handle must be rotated many times as described above to fully close it. In an emergency such as when a fire breaks out, the louver is opened and smoke is discharged smoothly. There is a problem that it can not be done. Furthermore, if the manual handle is lost, the manual opening / closing operation cannot be performed.

  Also, rather than turning the worm to open and close the louver, it is possible to quickly open and close the louver if any louver can be directly rotated manually by hand among a plurality of louvers arranged side by side in the window frame. However, even if the louver is directly rotated, the rotation transmission from the worm gear side to the worm cannot be performed because it is in a locked state.

  The present invention has been made in view of such problems, and its purpose is to enable smooth opening / closing operation by rotating the louver directly during manual operation as well as smooth opening / closing operation of the electric louver, and An object of the present invention is to provide a louver opening and closing device that can be compactly disposed within a vertical frame of a window frame.

  In order to achieve the above object, a louver opening and closing device according to the present invention includes, as described in claim 1, a plurality of shaft bodies in which both end shafts are rotatably supported in the vertical frames on both sides of the window frame. The louvers are arranged side by side, and these louvers are connected so as to be linked via a link mechanism, and the rotation of the motor disposed on the window frame is rotated through the meshing gear train and the rearmost gear of the meshing gear train. In the louver opening and closing device configured to transmit to the shaft body of one louver in the plurality of louvers to which the plurality of louvers are fixed, and to open and close all the louvers via the link mechanism, the meshing gear train is a rotating shaft of an electric motor. And a worm gear meshed with the worm, and an intermediate gear train comprising a plurality of gears sequentially meshed from the worm gear to the rearmost gear, The one gear in the two gears adjacent the intermediate gear train is separated from the other gear, characterized in that it comprises a mesh release mechanism for releasing the engagement of these gears.

  In the louver opening and closing device configured as described above, the mesh release mechanism is configured to rotate with the worm gear side gear as a fulcrum and mesh with the gear at an intermediate portion in the length direction thereof. A lever that rotatably supports one of the two gears, a spring that presses the lever in a direction to disengage the one gear and the other gear, and the lever on the gear case. When the end face facing the tip of the lever is engaged with the tip of the lever, the lever is rotated against the spring force to oscillate one end of the lever. It is comprised from the cam surface which meshes | engages a gear with the other gear, and the operation member formed in the latching surface which hold | maintains this meshing state.

  The invention according to claim 3 is a mesh release mechanism having a structure different from the above, and a peripheral groove is provided in one gear and the gear can be slid along the central axis in the axial direction. In addition, an operation knob is provided in the gear case that rotatably supports the gear and has an engagement piece protruding from the tip engaged with the circumferential groove in a direction parallel to the central axis. It arrange | positions so that a movement is possible, It is comprised so that one gear may be moved to an axial center direction by this operation knob, and a meshing with the other gear may be released.

  According to a fourth aspect of the present invention, there is provided a projecting piece that contacts a changeover switch piece of a sensor such as a micro switch that stops the motor at the fully open or fully closed position of the louver. It is characterized by.

  Furthermore, the invention according to claim 5 is a case in which a rod body that advances and retreats toward a vertical frame on one side of a window frame is provided on the back of one side of one louver in a louver arranged in parallel in the window frame. While the body is fixed, the base end portion of the manual handle for moving the rod body forward and backward by a left and right rotation operation is rotatably supported on the back of the case body. The wall surface is provided with a plurality of locking holes for removably engaging the tip of the rod body about the rotation axis of the louver.

  According to the first aspect of the present invention, the rotation of the electric motor is made up of a worm fixed to the rotating shaft of the electric motor, a worm gear meshed with the worm, and an intermediate gear train meshed with the worm gear. This is transmitted to the shaft body of one louver to which the last gear of this meshing gear train is fixed via the gear train, and the link mechanism connecting all the louvers from this shaft body is operated to move the louvers all at once. Since the rotation of the electric motor is decelerated by the meshing gear train, and the rotation torque is increased, the link mechanism is reliably operated, and all the louvers are rotated at the same time. The window can be opened and closed smoothly.

  Furthermore, the power supply is cut off at the time of a power failure, etc., because it has a mesh release mechanism that releases one of the two adjacent gears of the intermediate gear train from the other gear to release the engagement of these gears. In this case, the last gear fixed to the shaft body of one louver can be obtained by operating the mesh release mechanism to release the mesh between the two gears meshed with each other in the intermediate gear train. The louver can be turned directly and quickly without any load on the electric motor regardless of the lock function between the worm and worm gear. Open / close operation can be performed. Therefore, in the event of an emergency such as a fire, the louver can be quickly opened / closed manually even if the louver window cannot be opened / closed electrically.In addition, after manually opening to a desired opening, if the two gears in the intermediate gear train are engaged by operating the engagement release mechanism, the opening can be locked. it can. Further, the meshing gear train can be arranged in a vertical frame on one side of the window frame to constitute a louver window in which the louver opening / closing device is stored compactly in the window frame.

  According to the invention of claim 2, the meshing release mechanism between the two gears meshed with each other in the intermediate gear train rotates with the gear on the worm gear side as a fulcrum, and the gear in the middle portion in the length direction. A lever that rotatably supports one of the two gears that are meshed with each other, a spring that elastically presses the lever in a direction to disengage the one gear and the other gear, and a gear case. The lever is slidably disposed toward the tip of the lever, and when the lever is engaged with the tip of the lever, the lever is rotated against the spring force. Since it is composed of a cam surface for meshing one gear with the other gear and an operation member forming a locking surface for maintaining this meshing state, the tip of the lever is attached to the locking surface of the operating member. Lock above If the operating member is operated and moved away from the tip of the locking surface lever from the state where both gears in the inter-gear train are engaged, the lever is placed on the louver side by the spring force. It is possible to instantaneously release the engagement of the two gears that occur in the intermediate gear train by moving in a direction away from the other gear, and the side of the last gear that is fixed to the shaft body of one louver And the connection between the worm fixed to the rotating shaft of the electric motor and the worm gear side is released, and the louver is rotated manually and securely by rotating the louvers all at once via the link mechanism, The louver window can be opened and closed smoothly.

  If the operating member is slid toward the tip of the lever, the lever is moved to the other gear side against the spring force while sliding the tip surface of the lever against the cam surface, and one gear is moved. Can be easily and reliably engaged with the other gear, and the tip end surface of the lever is automatically and continuously locked from the cam surface to the locking surface to reliably hold the engagement of both gears. It can be used as an electric louver that transmits rotation to a louver via a meshing gear train.

  Further, according to the mesh release mechanism described in claim 3, a circumferential groove is provided in one of the gears, and the gear is configured to be slidable in the axial direction along the central axis thereof. A gear case that rotatably supports the gear is provided with an operation knob having an engagement piece that is engaged with the circumferential groove at the tip so as to be movable in a direction parallel to the central axis. Since this operation knob is configured to move one gear in the axial direction and disengage the other gear, the two gears in the intermediate gear train are usually held in mesh. Of course, it can be used as an electric louver, and in the event of an emergency, if the operating knob is moved in a direction parallel to the central axis of the gear, this operating knob is engaged with the peripheral groove of one gear. Easy and reliable by moving the gear together with the tip engagement piece Meshing can solve for the other gear, opening and closing of the similarly louvers window manually can be performed smoothly.

  According to the invention of claim 4, a projecting piece that abuts a changeover switch piece of a sensor such as a microswitch that stops the motor at the fully open or fully closed position of the louver is provided on one gear in the intermediate gear train. Therefore, when the motor is used as an electric louver, it can be automatically stopped in a fully open state or a fully closed state by simply starting the electric motor.

  According to the invention of claim 5, the rod body that advances and retreats toward the one side vertical frame of the window frame is provided on the one side rear surface of one louver in the louver arranged in the window frame. While fixing the case body and supporting the base end portion of the manual handle for allowing the rod body to be advanced and retracted by a horizontal rotation operation on the back of the case body, A plurality of locking holes are provided in the inner wall for removably engaging the tip of the rod body around the rotation axis of the louver, so that the louver can be manually opened and closed by the mesh release mechanism. After that, by grasping the manual handle and rotating it in the front-rear direction, the louver attached with the case equipped with this handle can be easily rotated in the opening and closing direction, and all via the link mechanism of The bar can be opened at the same angle all at once, and the rod body is moved from the case body to the one side vertical frame side by rotating the manual handle in the left-right direction. The louver can be held in an open state at a desired angle by being locked in one of a plurality of locking holes provided in the inner wall surface of the one side vertical frame.

The simplified perspective view of a louver window. Simplified front view. The partial longitudinal section front view of the part provided with the louver opening and closing device. The partial vertical side view of a louver opening / closing apparatus. The partially cut-away side view of the louver opening and closing device in a manually operable state. The side view of a link mechanism part. The simplified side view of the louver installed side by side. The perspective view of the handle | steering-wheel mounting part which opens and closes a louver manually. The rear view. The perspective view of a part of the state which has opened the louver manually. The perspective view of a part of the state which fixed the louver so that rotation was impossible. The partial longitudinal section rear view of the louver opening and closing device provided with another structure of a mesh release mechanism. The longitudinal side view of the state which made the intermediate gear train mesh. FIG. 4 is a longitudinal side view of a state where a part of the intermediate gear train is disengaged.

  A specific embodiment of the present invention will be described with reference to the drawings. The upper side frame material 1c and the lower side horizontal frame material 1d are integrated with each other between the upper end and the lower end of both side vertical frame members 1a and 1b having a certain length. Are connected to each other to form a front rectangular window frame 1, and a plurality of front horizontally long louvers 2 are arranged in the window frame 1 at regular intervals in the vertical direction. Both end shaft bodies 3a, 3b projecting horizontally outward from the center of both side end surfaces of the both side vertical frame members 1a, 1b by penetrating the opposite side wall plate portions and supporting them rotatably. A louver window A is formed. The vertical frame members 1a and 1b on both sides are made of a frame material having a U-shaped cross section, and the opening end that opens toward the outside thereof is detachably closed by a lid material 1e (shown in FIG. 3). It is formed in the hollow part.

  As shown in FIG. 7, each louver 2 is provided with engaging portions 2a and 2b at the upper end on the front surface and the lower end on the rear surface, and the lower end of the upper louver 2 in the louvers 2 and 2 adjacent vertically. In the state in which the joint portion 2b and the upper end engaging portion 2a of the lower louver 2 have a certain vertical width so that they engage with each other, and these upper and lower engaging portions 2a and 2b are engaged. The space between the upper and lower adjacent louvers 2, 2 is configured to be in a closed state in which the space is sealed.

  One shaft body 3a in all the louvers 2 rotatably supported by the one vertical frame member 1a is formed at the end portion protruding from the side wall plate portion of the vertical frame member 1a as shown in FIGS. As shown in FIG. 6, the base ends of the levers 4a are fixed, and the tips of the levers 4a of all the louvers 2 are rotatably connected to one longitudinal rectangular connecting rod 4b. And the connecting rod 4b constitutes a link mechanism 4 that opens and closes the louver window A by rotating all the louvers 2 simultaneously by moving the connecting rod 4b in the vertical direction.

  The louver window A is configured to be openable and closable both manually and electrically. As shown in FIGS. 3 and 4, the electrically operated opening and closing device controls the rotation of the electric motor 5 through the meshing gear train. The louver 2 is transmitted to the shaft body 3b on the other end side of one louver 2, and all the louvers 2 are simultaneously rotated from the shaft body 3b via the link mechanism 4 so that the louver window A is opened and closed. ing. The meshing gear train is secured to the worm 6 fixed to the rotating shaft 5a of the electric motor 5, the worm gear 7 meshed with the worm 6, and the shaft 3b on the other end side of the one louver 2 from the worm gear 7. The intermediate gear train 9 sequentially meshes with the rearmost gear 8. The intermediate gear train 9 includes a first gear 9 a meshed with the worm gear and a second gear 9 b meshed with the first gear 9 a. The third gear 9c meshed with the second gear 9b and the fourth gear 9d meshed with the third gear 9c. The fourth gear 9d is meshed with the rearmost gear 8.

  The first and second gears 9a and 9b in the worm gear 7 and the intermediate gear train 9 are composed of large and small diameter gear portions. The worm 6 is engaged with the large diameter gear portion of the worm gear 7, and the small diameter gear portion of the worm gear 7 is engaged. Is engaged with the large-diameter gear portion of the first gear 9a, the large-diameter gear portion of the second gear 9b is engaged with the small-diameter gear portion of the first gear 9a, and the third gear is engaged with the small-diameter gear portion of the second gear 9b. 9c is engaged, and the rotation of the electric motor 5 is decelerated by these meshing gears and transmitted to the rearmost gear 8.

  The electric motor 5 and the meshing gear train are housed in the gear case B. The electric motor 5 is mounted on the upper portion of the gear case B, and the first, second, and fourth gears 9a and 9b in the worm gear 7 and the intermediate gear train 9 are provided. 9d are rotatably supported by the gear case B, and the rearmost gear 8 is fixed to a shaft body 3b on the other end side of the one louver 2 protruding into the gear case B. The gear case B is formed in a rectangular tube shape that can be stored in the hollow portion of the other vertical frame member 1b in the window frame 1, and is fixed to the upper portion of the vertical frame member 1b by screws or the like. The electric motor 5 is connected to a commercial power source via wiring (not shown), but a battery such as a dry cell may be used as a power source.

  In addition, the above-described electrically operated louver window opening / closing device manually turns the louver 2 in the event of a power failure in an emergency such as the occurrence of a fire, or when the electric motor 5 cannot be driven due to battery exhaustion. Even if it is attempted to open the louver window A, the worm gear 7 cannot be rotated from the worm gear 7 and is locked, so that the meshing between the gears of the intermediate gear train 9 is released and the louver is manually operated. A gear meshing release mechanism is provided for switching so that the rotational force of 2 is not transmitted to the side of the worm gear 7 meshed with the worm 6.

  As shown in FIGS. 4 and 5, the mesh release mechanism is configured to be able to release the mesh between two gears in the intermediate gear train 9, for example, the third gear 9c and the fourth gear 9d. Specifically, the base end portion (upper end portion) is pivotally attached to the rotation center axis of the second gear 9b in the intermediate gear 9, and the second gear 9b is pivotally attached to the intermediate portion in the length direction. A lever 10 that rotatably supports the three gears 9c, a central portion is wound around the rotation center axis of the second gear 9b, and one end thereof is received by the first gear 9a on the rotation center axis. A spring 11 which presses the lever 10 in a direction in which the third gear 9c and the fourth gear 9d are disengaged by press-contacting the end of the third gear 9c supported by the lever 10 with the rotation center axis of the third gear 9c; , Sliding up and down toward the front end surface (lower end surface) of the lever 10 at the lower end portion of the case back surface facing the indoor side of the gear case B The operation member 12 is movably attached and is configured to rotate the lever 10 to switch the engagement and disengagement of the third and fourth gears 9c and 9d.

  The operation member 12 is integrally attached to an operation piece 12a that slides in the vertical direction along the outer surface of the back surface of the gear case B exposed from the notch portion of the vertical frame member 1b, and the inner surface of the operation piece 12a. In the gear case B, a cam piece 12b that moves up and down along the inner surface of the back surface of the case is provided. The upper end surface of the cam piece 12b that faces the tip of the lever 10 The lever 10 is engaged with and pressed against the spring 11 and rotated toward the fourth gear 9d against the force of the spring 11 to engage the third gear 9c with the fourth gear 9d from the outer end to the inner end. A cam surface 12c inclined obliquely downward is formed, and the upper end of the inner end side connected to the inner end of the inclined cam surface 12c is cut out in an L-shaped cross section so that the tip of the lever 10 is engaged. The third and fourth gears 9c and 9d are stopped and formed on the locking surface 12d that holds the meshed state. ing.

  Further, a sensor 13 such as a microswitch is disposed in the intermediate gear train 9 in the vicinity of the lower portion of the fourth gear 9d, and the fourth gear 9d protrudes at a predetermined angular interval in the circumferential direction. The pieces 14a and 14b are provided in a projecting manner, and the projecting pieces 14a and 14b are brought into contact with the changeover switch piece 13a provided on the sensor 13 so that the louver window is fully opened and the electric motor 5 is stopped in the fully closed position. It is configured to make it.

  Further, one louver 2 in the plurality of louvers 2 arranged in parallel in the window frame 1, for example, on one side rear surface of the middle louver 2 as shown in FIG. 2, is shown in FIGS. As described above, a manual handle 15 for opening and closing the louver window A by manually rotating the louver 2 is provided. In detail, a rectangular frame-shaped hollow case body 16 having a vertical width substantially equal to the vertical width of the louver 2 is fixed to the back of one side of the louver 2, and the manual handle 15 is attached to the center of the back of the hollow case body 16. The base end portion (lower end portion) is supported so as to be pivotable in the left-right direction, and the louver 2 is gripped by the manual handle 15 protruding upward from the hollow case body 15 and swung up and down in the front-rear direction. Is configured to open and close the louver window A.

  In addition, as shown in FIG. 9, a rod body 17 that moves forward and backward toward the one side vertical frame 1a of the window frame 1 is disposed in the hollow case body 15 so as to be slidable in the left-right direction. A rack 18 formed on the lower surface of the base end portion of the body 17 is fixed to a rotating shaft 15a projecting from the center of the base end portion of the manual handle 15 rotatably supported by the hollow case body 16. By engaging the sector gear 19 and rotating the manual handle 15 in the right direction in the figure, the tip of the rod body 17 protrudes from one side surface of the hollow case body 15 and one side of the window frame 1. It is configured to be detachably locked in a locking hole 20 formed in the inner wall surface of the vertical frame 1a. A plurality of the locking holes 20 are provided in the circumferential direction at regular angular intervals around the shaft body 3a of the louver 2 to which the hollow case body 15 is attached. Therefore, the opening degree of the louver window A can be adjusted by fixing.

  Next, the operation of the louver opening / closing device of the louver window A configured as described above will be described. Usually, the louver window A is used as an electric louver window by the operation of the electric motor 5, and all the louvers 2 are By rotating the shafts 3a and 3b up to the vertical direction with the shafts 3a and 3b as fulcrums and engaging the vertical engaging portions 2a and 2b of the adjacent louvers 2 and 2 as shown in FIG. When the electric motor 5 is driven by pushing a switch (not shown) from the state where the louver window A is fully closed, the rotation of the electric motor 5 changes the meshing gear train consisting of the worm 6 to the worm gear 7 and the intermediate gear train 9. The one louver 2 that is transmitted to the rearmost gear 8 and fixes the gear 8 to the shaft body 3b rotates and is fixed to the shaft body 3a on one side end side of the louver 2. Lever 4a rotates at the same time and Connecting rod 4b are vertically moved by the rotation, the other lever 4a of the louver 2 for connecting to the connecting rod 4b all the louver 2 is operated in unison to rotate in a direction to open the louvers window A.

  Thus, when the louver 2 is rotated in the horizontal direction until the louver window A is fully opened, the one projecting piece 14a projecting from the fourth gear 9d of the intermediate gear 9 becomes the switching switch piece 13a of the sensor 13. The electric motor 5 stops. In order for the louver window A to have a desired opening degree, the electric motor 5 may be stopped until the one projecting piece 14a of the fourth gear 9d comes into contact with the switching switch piece 13a of the sensor 13. When the electric motor 5 is driven from this state, it operates until the louver A is fully opened, that is, until the projecting piece 14a contacts the switching switch piece 13a of the sensor 13. When the projecting piece 14a comes into contact with the switching switch piece 13a of the sensor 13, the electric motor 5 is stopped and switched to rotate in the reverse direction when it is operated next time.

  In order to close the louver window A from the fully opened state as described above, when the switch (not shown) is pressed, the electric motor 5 rotates in the opposite direction to the last through the meshing gear train. The one louver 2 that is transmitted to the gear 8 and fixed to the shaft body 3b rotates in the opposite direction, that is, in the standing direction, and this rotation causes the link mechanism 4 to pass through. All the louvers 2 rotate in a direction to close the louver window A all at once. Thus, when the louver 2 rotates in the upright direction until the louver window A is fully closed, the other projecting piece 14b projecting from the fourth gear 9d of the intermediate gear 9 becomes the switching switch piece of the sensor 13. The electric motor 5 stops in contact with 13a.

  Next, to manually open and close the louver window A by rotating the louver 2, first, the operation member 12 provided on the back surface of the gear case B is moved downward to disengage the intermediate gear train 9. The louver 2 can be manually rotated by releasing the connection between the side of the gear 8 fixed to the shaft 3a and the side of the worm gear 7 meshed with the worm 6 fixed to the rotating shaft 5a of the electric motor 5. To.

  Specifically, when the operation piece 12a of the operation member 12 is moved downward, the cam piece 12b is moved downward integrally, and the tip of the lever 10 supporting the third gear 9c of the intermediate gear train 9 is connected to the cam piece 12b. Direction in which the lever 10 is separated from the fourth gear 9d of the intermediate gear train 9 while the tip end surface of the lever 10 is slid on the upper inclined cam surface 12c of the cam piece 12b by the restoring force of the spring 11. And the third gear 9c is disengaged from the fourth gear 9d engaged with the gear 8 fixed to the shaft body 3a of the louver 2.

  After that, when the louver 2 is rotated in the front-rear direction by gripping or holding the manual handle 15 supported by the hollow case body 16 attached to the back of one side of the louver 2 so as to be able to turn left and right, The gear 8 fixed to the other shaft body 3b of the both end shaft bodies 3a, 3b of the louver 2 and the fourth gear 9d of the intermediate gear train 9 meshed with the gear 8 are on the electric motor 5 side. On the other hand, the lever 4a fixed to one shaft body 3a of the louver 2 rotates together with the rotation of the louver 2 and rotates together with the link mechanism 4 while rotating idly without transmitting the rotational force. Rotate all at once, and the louver window A opens and closes.

  Note that the louver window A opens when the louver 2 is standing vertically, and when the manual handle 15 is pulled toward the front (rear), all the louvers 2 are lowered in the horizontal direction and opened. Then, the manual handle 15 is kept tilted rearward. When the manual handle 15 is turned forward from this state, the louver 2 can be turned in the standing direction and the louver window A can be closed.

  Further, the manual handle 15 is operated to rotate the louver 2 as described above, and when the louver window A reaches a desired opening degree, the manual handle 15 is moved toward the one side vertical frame 1a side of the window frame 1. When the rotation operation is performed, the rod body 17 provided with the rack 18 in which the sector gear 19 fixed to the rotation shaft 15a of the manual handle 15 rotates integrally and meshes with the sector gear 19 is a hollow case body. The louver window A is fixed with the above-mentioned opening degree by moving from 16 toward the one side vertical frame 1a and inserting and locking the front end portion thereof into the locking hole 20 formed in the one side vertical frame 1a. Can hold. In this case, one side vertical frame 1a of the window frame 1 has a plurality of locking holes 20 facing the rod body 17 in the circumferential direction at regular angular intervals with the shaft body 3a of the louver 2 as the center. Since it is provided, the opening degree of the louver window A can be adjusted by inserting and locking the distal end portion of the rod body 17 into the desired locking hole 20.

  In order to switch from manually opening and closing the louver window A to electrically opening and closing the louver window A, the operating member 12 of the gear mesh release mechanism is moved up and the lever 10 is moved by the upper inclined cam surface 12c of the cam piece 12b. The lower end surface is pressed, and the lever 10 is rotated toward the fourth gear 9d side of the intermediate gear train 9 while sliding on the inclined cam surface 12c against the force of the spring 11, and the lever 10 The third gear 9c in the intermediate gear train 9 that supports the shaft is engaged with the fourth gear 9d, and the tip of the lever 10 is engaged with the engagement surface 12d from the inclined cam surface 12c to maintain the engagement state. You can do it.

  Further, when the louver window A is manually opened, the manual handle 15 is rotated toward the one side vertical frame 1a side of the window frame 1 to pierce the tip of the rod body 17 in the one side vertical frame 1a. The louver window A can be opened with a predetermined opening degree by inserting and engaging with the engaging hole 20, but such an operation, that is, the rod body 17 is engaged with the engaging hole 20. Without performing the operation of stopping, after having been manually opened to the desired opening as described above, the mesh release mechanism is operated to turn the two gears 9c, 9d in the intermediate gear train 9 on. If engaged, even if the louver 2 is manually rotated to open the louver window A, the lock function between the worm 6 and the worm gear 7 works to fix the louver window A with its opening. Therefore, the louver window A is stepless. It can be opened to a desired degree.

  12 to 14 show another embodiment of the mesh release mechanism. In the above embodiment, the third gear 9c is attached to the lever 10 that rotates around the second gear 9b in the intermediate gear train 9. In this embodiment, the third gear 9c is separated from the fourth gear 9d by the rotation of the lever 10 and the meshing is released. All of the first to fourth gears 9a to 9d are rotatably supported on the gear case B, and the third gear 9c is moved in the axial direction by the operation knob 22 without using the lever 10, and the meshing from the fourth gear 9d is released. It is configured as follows.

  Specifically, the third gear 9c in the intermediate gear train 9 is slidably supported on a center shaft 9c1 rotatably supported on the front and rear facing surfaces of the gear case B, and the rear center of the third gear 9c is centered. A circular protrusion 9c3 having a circumferential groove 9c2 is provided in the part, and a coil spring 21 is interposed between the circular protrusion 9c3 and the rear surface of the gear case B, and the third gear is driven by the force of the coil spring 21. 9c is pressed and held at the meshing position with the fourth gear 9d. Further, the small-diameter gear 9b1 of the second gear 9b in the intermediate gear train 9 with which the third gear 9c is engaged is such that the third gear 9c is disengaged from the fourth gear 9d along its central axis 9c1. The third gear 9c is formed thicker than the third gear 9c so that the third gear 9c can always be engaged even if it moves backward.

  On the other hand, an operation knob 22 is inserted and supported in the lower part of the rear surface of the gear case B so as to be movable in a direction parallel to the central axis 9c1 of the third gear 9c. An engagement piece 22a that is engaged with a circumferential groove 9c2 provided in the three gears 9c is projected. Since other structures are the same as those in the above embodiment, the same parts are denoted by the same reference numerals and detailed description thereof is omitted.

  When the louver window A is used as an electric louver window, the gear meshing release mechanism configured as described above has a louver from a worm 6 that fixes the rotation of the electric motor 5 to the electric motor 5 as in the above embodiment. 2 is transmitted to the louver 2 having the rearmost gear 8 via a meshing gear train reaching the rearmost gear 8 fixed to the shaft body 3b, and all the louvers 2 are simultaneously transmitted via the link mechanism 4. The louver window A is opened and closed by turning.

  In order to manually open and close the louver window A, first, when the grip portion of the operation knob 22 protruding rearward from the back surface of the gear case B is gripped or held and pulled backward, the third gear 9c is provided. The third gear 9c moves backward on the central shaft 9c1 integrally with the operation knob 22 against the force of the coil hooking 21 by the engagement piece 22a of the operation knob 22 engaged with the circumferential groove 9c2. Then, the louver window A can be opened and closed by the turning operation of the manual handle 15 in the same manner as described above without being engaged with the fourth gear 9d and receiving the locking action by the worm 6 and the worm gear 7.

  In any of the above embodiments, the gear meshing release mechanism is configured to release the meshing between the third gear 9c and the fourth gear 9d in the intermediate gear train 9, but the present invention is not limited to this. In short, what is necessary is just to comprise so that the meshing | engagement between the two adjacent gears in the intermediate | middle gear train 9 may be cancelled | released.

A louver window B gear case 1 window frame 2 louver 4 link mechanism 5 electric motor 6 worm 7 worm gear 8 last gear 9 intermediate gear train
10 Lever
11 Spring
12 Operation parts
15 Manual handle

Claims (5)

  In the window frame, a plurality of louvers in which both end shafts are rotatably supported on the vertical frames on both sides of the window frame are arranged side by side, and these louvers are connected so as to be interlocked via a link mechanism, The rotation of the motor disposed on the window frame is transmitted to the shaft body of one louver in the plurality of louvers to which the rearmost gear of the meshing gear train is fixed via the meshing gear train, and all through the link mechanism. In the louver opening and closing device configured to open and close the louver, the meshing gear train includes a worm fixed to the rotating shaft of the electric motor, a worm gear meshed with the worm, and the worm gear to the rearmost gear sequentially. The intermediate gear train is composed of a plurality of meshed gears, and one of the two adjacent gears of the intermediate gear train is separated from the other gear. Louver switchgear, characterized in that it comprises a mesh release mechanisms for releasing the engagement of al gears.   The mesh release mechanism is a lever that rotates with the gear on the worm gear side as a fulcrum, and rotatably supports one gear of the two gears meshed with the gear at an intermediate portion in the lengthwise direction. And a spring that presses the lever in a direction to disengage the one gear and the other gear, and a gear case that is slidably disposed toward the tip of the lever, and When the opposite end surface is engaged with the tip of the lever, the lever is rotated against the spring force to engage one gear with the other gear, and the latch that holds this engagement state. The louver opening and closing device according to claim 1, wherein the louver opening and closing device comprises an operation member formed on the surface.   The mesh release mechanism is configured such that one gear is provided with a circumferential groove, the gear is configured to be slidable in the axial direction along the center axis, and the gear is rotatably supported. An operation member having an engagement piece that is engaged with the circumferential groove at the tip is arranged on the gear case so as to be movable in a direction parallel to the central axis, and one gear is pivoted by the operation member. The louver opening and closing device according to claim 1, wherein the louver opening and closing device is configured to be disengaged from the other gear by moving in a direction.   A projecting piece that abuts a changeover switch piece of a sensor such as a microswitch that stops the motor at a fully open or fully closed position of the louver is provided on one gear in the intermediate gear train. The louver opening and closing device according to claim 2 or claim 3.   A case body provided with a rod body that advances and retreats toward the vertical frame on one side of the window frame is fixed to the back surface of one louver of the louvers arranged side by side in the window frame. While supporting the base end of the manual handle that moves the rod body forward and backward by a turning operation in the left and right directions, the inner wall of the vertical frame on one side of the window frame is centered on the rotation axis of the louver. The louver opening and closing device according to claim 1, wherein a plurality of locking holes for removably engaging the tip of the rod body are provided.

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