JP5798367B2 - Window opening and closing device - Google Patents

Description

  The present invention relates to a window opening / closing device that allows a shoji attached to a window frame to be freely opened and closed by a hanging metal fitting by opening and closing a handle provided on the window frame.

  2. Description of the Related Art As a window opening / closing device that can open and close a shoji (window) by rotating a handle (operator handle), a worm shaft that is connected to a handle protruding indoors and a worm shaft that engages with the worm shaft's worm. Widely used is a device in which a gear plate is formed at the periphery and a substantially disk-shaped substrate that extends in the prospective direction of the window frame, and a drive arm that protrudes from the substrate in the prospective direction and is integrally formed with the substrate is provided in the device body. ing. Since the substrate provided with the drive arm is provided so as to extend in the expected direction of the window frame, the size of the expected size of the outer shape of the apparatus main body is considerably increased. On the other hand, since the handle is provided so as to protrude from the main body to the indoor side, the apparatus as a whole is configured in a shape having a width in the prospective direction. Therefore, when the handle is positioned on the frame or lower frame of the window frame, for example, on the inside surface of the room of the lower frame, the device main body or handle protrudes greatly indoors from the lower frame, curtains or blinds provided on the window frame, etc. There is a risk of causing interference with the body, hitting the body against the protrusion, injury or bruising, or catching clothes.

  As described above, the conventional window opening / closing device has a larger expected size and is larger than the expected size of a normal window frame, and thus cannot be hidden in the window frame as it is. In view of such circumstances, there is a demand in the market for a window opening and closing device that does not protrude greatly indoors, so that most of the part is built in the window frame so that the amount of protrusion from the window frame can be reduced. A concealed window opening and closing device has been proposed (see, for example, Patent Document 1).

  The apparatus described in Patent Document 1 includes a screw shaft body and a moving nut body screwed into the screw shaft body in a base extending in a direction along the window frame, and a bevel gear is attached to one end of the screw shaft body and a chamber. Attach a bevel gear that meshes with the bevel gear to the inner end of the drive shaft that protrudes inward, rotate the operator handle provided on the outer end of the drive shaft, rotate the screw shaft through the two bevel gears, and move It is a mechanism that opens and closes the shoji by rotating the drive arm and the operation arm by moving the nut body in the direction of finding along the window frame. According to this apparatus, since the upper case constituting the base of the apparatus only appears on the upper surface of the window frame, most of the apparatus can be accommodated in the window frame, so that the amount of protrusion to the indoor side can be reduced. However, the structure is complicated and the parts cannot be processed economically, and assembly adjustment is troublesome. In particular, the two bevel gears must be accurately meshed with each other in the base. However, in order to correctly combine the bevel gears, the positions in the front-rear direction, the left-right direction, and the up-down direction must be adjusted simultaneously, which is very troublesome. In addition, when the gear is worn out by use, there is a possibility that the meshing may be out of order and the shoji cannot be held in an arbitrary open position.

JP 2010-174499 A (claims, drawings)

  The problem to be solved by the present invention is that in the window opening and closing apparatus as described above, most of the apparatus can be accommodated in the window frame, the structure is simple and the assembly is easy, and the shoji is securely held at any opening and closing position. It is possible to provide an economical window opening and closing device.

According to the present invention, in the device for opening and closing the shoji that is attached to the window frame so as to be openable and closable, the device body extends substantially in the horizontal direction and has an inclined surface that inclines toward the room side. has a top surface having a Jo surface, the mounting plate portion to enter the window frame extends at right angles to the inside of the window frame from the horizontal plane of the upper surface portion, surrounding the mounting plate portion on the back side of the upper surface portion A rack gear is housed in the bracket so as to reciprocate in the direction of finding, and a wheel shaft provided at a right angle to the mounting plate portion extends along the mounting plate portion and meshes with the rack gear. An upper bearing fitting portion is formed on the upper surface portion of the apparatus main body so as to rise up at right angles to the finding direction and incline toward the indoor side in the prospective direction. Below the center line A lower bearing is formed on the upper side, a bearing fitted in the upper bearing fitting portion and a worm shaft rotated by a handle so as to be supported by the lower bearing are rotatably attached, and the wheel gear is attached to the worm shaft. the worm to mesh with the provided comprises an output arm having one end coupled to the rack gear, the intermediate arm having one end connected to the other end of the output arm in the middle and the other end connected to the bracket is connected to shoji window An opening / closing device is provided to solve the above problems.

  According to the present invention, at the window opening / closing position, the main body is provided with a cam that is rotated by a full-open / half-open switch, and the cam is provided with a flange that can be engaged with the rack gear. A window opening and closing device is provided.

The present invention is configured as described above, and the apparatus main body has a horizontal surface extending in the direction in which the window frame is found and a substantially flat surface having an inclined surface inclined toward the indoor side, and a horizontal surface of the upper surface portion. A mounting plate portion that extends at right angles to the inside of the window frame and enters the window frame is provided, and a bracket is provided on the back side of the upper surface portion so as to surround the mounting plate portion. A rack gear is accommodated in the bracket so as to reciprocate in the direction of finding, and a wheel shaft is provided at a right angle to the mounting plate portion, and a wheel gear meshing with the rack gear is rotatably pivotally attached to the wheel shaft, The wheel gear is engaged with the worm of the worm shaft extending from the upper surface of the apparatus main body to the room direction. Therefore, the wheel shaft is positioned horizontally with respect to the horizontal surface of the upper surface portion, and slightly extends in the expected direction. However, even if the wheel gear is rotatably mounted, the mounting plate portion is not in the expected direction in the bracket. And wheel gears are only provided side by side.
In other words, the mounting plate portion is provided at a right angle from the upper surface portion of the apparatus main body toward the inside of the window frame, and the wheel shaft is provided at a right angle from the mounting plate portion. Located horizontally in the prospective direction. Since the wheel gear and the mounting plate attached to the wheel shaft are aligned in the thickness direction, the thickness can be reduced if sufficient strength can be secured. By forming the rack gear with a small thickness and width, the expected size can be reduced. Therefore, it is possible to fit most of the members in the window frame with the upper surface of the main body positioned on the upper surface of the window frame, and the main body and handle do not protrude significantly in the prospective direction unlike conventional devices. It is safe with little damage to the curtains and blinds, or damage to the body.

  In addition, the wheel gear is meshed with the worm formed on the worm shaft, and the wheel gear is directly meshed with the rack gear to drive the output arm and intermediate arm to open and close the shoji. Since the worm and the rack gear are communicated via each other, the assembly adjustment is easy and simple and can be obtained economically.

The top view of the state which shows one Example of this invention and has not attached the handle | steering-wheel. The front view of the apparatus of FIG. AA line sectional view of FIG. The side view of the state which attached the handle and built in the window frame. The perspective view seen from the bottom side. Exploded perspective view Illustration of wheel gear part Explanatory drawing of full open / half open switch part

Figures 1-6 show an embodiment of the window opening and closing apparatus of the present invention, shoji 1 as shown in FIG. 4 is fitted into the window frame 2, openably by an appropriate lifting lugs (not shown) Is provided. Although the opening / closing device can be provided in the frame of the window frame, the drawing shows an embodiment in which the opening / closing device is provided in the lower frame 3 of the window frame.

  The lower frame 3 extends in the direction of finding, and as shown in FIG. 4, an upper surface is formed in a substantially square shape having a substantially horizontal upper mounting surface 4 and an inclined mounting surface 5 inclined from the upper mounting surface 4 to the indoor side. ing. The window opening and closing device is formed in a substantially horizontally long shape extending in the direction of finding as shown in FIG. The window opening / closing device body 6 is fitted to a receiving hole formed in the lower frame, and has a horizontal surface 7 extending along the upper mounting surface 4 of the lower frame 3 and an inclined surface 8 extending along the inclined mounting surface 5. An upper surface portion 9 having a letter-shaped surface, and the inner surface of the lower frame 3 from the horizontal surface 7 of the upper surface portion 9, that is, substantially perpendicular to the depth direction of the lower frame (window frame), It has a mounting plate portion 10 formed integrally with the upper surface portion 9 so as to enter, and is fixed to the upper surface of the lower frame 3 by inserting screws (not shown) into mounting holes 11 formed at both ends of the upper surface portion 9. . On the back surface side of the upper surface portion 9, there is a bracket 14 formed in a substantially horizontally long box shape with the side plate portion 12 and the bottom plate portion 13 so as to surround the mounting plate portion 10, and a long hole 15 is formed in the bottom plate portion 13. . Mounting holes are formed in the side plate portion 12 of the bracket 14 and the mounting plate portion 10 of the main body, and pins 14a are inserted into the mounting holes to fix the bracket to the mounting plate portion. The ear pieces 16 formed on both sides are fixed to the frame together when the main body 6 is fixed to the upper surface portion 9 by the screws.

  In the approximate center of the device body 6 in the direction of finding, it rises substantially perpendicular to the direction of finding with respect to the upper surface portion 9 and is about 60 degrees in the prospective direction toward the upper side in the room. An upper bearing fitting portion 17 standing at an elevation angle is formed, and a lower bearing 18 concealed in the lower frame is formed on the lower extension of the center line of the upper bearing fitting portion 17. A bearing 19 is fitted into the upper bearing fitting portion 17, and a worm shaft 20 is rotatably attached so as to be supported by the bearing 19 and the lower bearing 18, and the circumference of the worm shaft 20 between the two bearings. A worm 21 is formed on the surface. An anti-rotation surface 22 such as serration and a retaining portion 23 are formed in the portion extending from the upper surface portion 9 to the indoor side. The operation handle 24 is fitted to the anti-rotation surface 22 in a non-rotating state, and is removed by a pin or the like. Stopped. As the operation handle 24, a foldable handle is preferably used. When the handle is raised and rotated, the worm shaft 20 rotates. The worm shaft portion is basically the same as that of the conventional window opening / closing device, but the expected size of the device main body is much smaller than that of the conventional device.

  As described above, when the apparatus main body 6 is attached to the lower frame 3, the upper surface portion 9, the upper bearing fitting portion 17, and the operation handle 24 of the apparatus main body 6 are only exposed above the lower frame 3. The amount of projection in the prospective direction can be reduced, the opening / closing operation is easy, and there is no obstacle to curtains, blinds, etc., and the possibility of hitting or catching on the operation handle can be reduced. Further, when the elevation angle of the operation handle 24 is set to about 60 degrees, it does not interfere with the window frame or the like even with the same handle shaft length and rotation radius as the conventional operation handle, and the handle with the same operation force as the conventional one. Can be rotated without impairing operability.

The main body 6 is provided with a wheel gear 25 that meshes with the worm 21. The wheel gear 25 is rotatably attached to a wheel shaft 26 provided at a substantially right angle to the mounting plate portion 10 of the main body, and the mounting plate portion extends at right angles from the horizontal surface of the upper surface portion of the main body to the inside of the window frame. 10 extends . A rack gear 27 is housed in the bracket 14 so as to reciprocate only in the direction of being guided by the side plate portion 12 and the bottom plate portion 13 of the bracket 14 and the mounting plate portion 10 of the main body 6. 25 also meshes with the rack gear 27. For this reason, the tooth profile formed on the wheel gear 25 and the rack gear 27 is formed in a helical gear shape.

  An output shaft 28 is provided on the bottom surface of the rack gear 27 so as to transmit the movement of the rack gear 27 to the outside of the bracket 14. As shown in FIG. 6, in the embodiment, the tip of the output shaft 28 is inserted and fixed in the hole 29 provided in the rack gear 27. However, the output shaft 28 may be provided integrally with the rack gear 27. One end of the output arm 30 is connected to the. This output arm 30 has an output shaft side hole 31 through which the output shaft 28 is rotatably inserted at one end, and an intermediate arm side hole 32 is formed at the other end.

  The intermediate arm 33 has an arm bracket shaft 35 for pivotally mounting the arm bracket 34 at one end, and is formed in a substantially triangular side portion formed substantially in the middle of the arm away from the arm bracket shaft 35. An intermediate shaft 37 for loosely fitting the intermediate arm side hole 32 of the output arm 30 to the output arm 30 and connecting the output arm 30 to the intermediate arm 33 is provided at 36. 5 and 6, the intermediate shaft 37 is illustrated on the back side of the base end fixed to the intermediate arm 33. At the other end of the intermediate arm 33, a connecting shaft 39 for connecting to a mounting bracket 38 attached to the shoji 1 is provided. The arm bracket 34 is formed in a substantially L-shaped cross section, and an upstanding surface 40 extending along the side surface of the bracket 14 is fixed to the bracket.

  The apparatus main body 6 is preferably provided with a full open / half open switch 41. The full-open / half-open switch 41 moves the appropriate cam or stopper (not shown) by the switch to prevent the rack gear 27 from moving or the wheel gear 25 from rotating within a predetermined range, and the shoji 1 is opened to the half-open position. It may be provided in an appropriate structure so that the shoji 1 can be fully opened when the switch is released. In the embodiment shown in the figure, a switch 41 is attached to the upper surface portion 9 of the main body 6 so as to be movable (slidable) in an locating direction, so that the movement of the rack gear can be restricted or released. A recess 42 is provided on the side. A cam shaft 43 is fixed to the mounting plate portion 10 of the apparatus main body 6, and a cam 44 is loosely fitted to the cam shaft 43. FIG. 8 shows an embodiment of the cam 44, and a corner 45 that protrudes and fits into the recess 42, and a hook that extends in a direction opposite to the corner 45 across the cam shaft 43 and can be engaged with the rack gear 27. A flat portion 47 is formed on the side of the base end of the flange portion 46. In the embodiment shown in FIG. 8, the corner portion 45 and the flange portion 46 are provided at positions shifted by approximately 180 degrees across the cam shaft 43, but other appropriate angles, for example, positions shifted by approximately 90 degrees. It can also be provided. A corner may be provided on the switch 41 side, and a recess may be formed in the cam 44 so as to be loosely fitted to the corner (not shown).

  The rack gear 27 is formed with a lock portion 48 with which the flange portion 46 is engaged. The lock portion 48 has a control long hole 49 into which the collar portion 46 enters by rotating the cam 44, and the collar portion 46 abuts when the shoji 1 is half-opened by moving in the direction in which the rack gear 27 is found. A constraining wall surface 50 with which the flange 46 engages is formed at one end of the control slot 49 so that the rack gear 27 does not move further in the direction of finding. An engaging surface 51 is formed on the upper surface of the lock portion 48 so that the flat portion 47 provided on the cam 44 abuts when the collar portion 46 is engaged with the restraint wall surface 50. The length of the control long hole 49 is a length with which the flange portion 46 of the cam 44 abuts against the restraining wall surface 50 when the rack gear 27 is moved and the shoji 1 is moved from the fully closed position to the half open position. Since the flat portion 47 is in contact with the engagement surface 51 in the half-open position, the cam 44 cannot be rotated and the switch 41 cannot be operated. When the shoji is in the fully closed position, the cam 44 can be rotated by operating a switch. In the embodiment shown in FIG. 6 and the like, the lock portion 48 is formed with a lock block 52 having the control long hole 49 separately from the rack gear 27, and this lock block 52 is applied to the rear end of the rack gear 27, and the output shaft When the 28 is inserted and fixed in the hole 29 of the rack gear 27, the output shaft 28 is used to connect and fix to the rack gear 27. The control slot 49 is directly formed in the rack gear 27 to form the lock portion 48. You can also. It should be noted that the switch can be a rotary type, and the shape of the cam and the long hole of the rack gear can be formed in other appropriate shapes.

  When the full-open / half-open switch 41 is set to the half-open state with the above-described configuration, the cam 44 rotates and the collar portion 46 enters the control slot 49 of the lock section 48, the rack gear 27, and the collar section 46 extends from the control slot 49. It can be moved in the direction of finding up to the position where it hits the restraint wall surface 50. At this position, the flat portion 47 of the cam 44 abuts against the engagement surface 51 of the lock portion 48. Therefore, even if the rack gear 27 is further moved in the direction of finding, the cam 44 cannot be pushed and rotated, so that the restraint state of the rack gear 27 is maintained and further moved in the same direction to fully open the shoji. I can't. When the rack gear 27 moves in the reverse direction (returning direction), the constraining wall surface 50 moves away from the flange 46 of the cam 44, so that the cam 44 is free in the rotation direction, and the cam is rotated by operating the full-open / half-open switch. The rack gear can be moved freely.

  The operation of the switchgear according to the present invention will be described. When the operating handle 24 is raised and rotated, the worm shaft 20 rotates, and the rack gear 27 reciprocates in the direction of finding through the worm 21 and the hall gear 25. The rotation direction of the operation handle 24 differs depending on whether the screw of the worm 21 is a right-handed screw, a left-handed screw, or whether the shoji is opened clockwise or counterclockwise. By moving in the finding direction, the intermediate arm 33 rotates about the arm bracket shaft 35 via the output shaft 28, the output arm 30, and the intermediate shaft 37. Since the connecting shaft 39 provided at the tip of the intermediate arm 33 is connected to the shoji 1, the shoji 1 can be opened by the rotation of the intermediate arm 33. At this time, since the drive portion is constituted by a gear train including the worm 21 and the wheel gear 25, the shoji can be reliably held at that position even if the shoji 1 is stopped at an arbitrary position. Further, when closing the shoji, if the operation handle 24 is rotated in the reverse direction, the rack gear 27 moves toward the original position, and the shoji is fully closed.

  When the full-open / half-open switch 41 is operated and the collar portion 46 of the cam 44 is set in a half-open position in which the cam 44 can be engaged with the lock portion 48, the rack gear 27 moves when the shoji 1 is opened to the half-open position. As it is blocked, the shoji opens to the half-open position and stops. Normally, it is better to set the switch in this position to open and close the shoji. When it is desired to fully open the shoji for cleaning or the like, the operation handle 24 is rotated in the reverse direction to completely close the shoji 1 once. In this state, the fully-open / half-open switch 41 is operated to set the cam portion 44 of the cam 44 to the fully-open position in which the cam portion 44 is disengaged from the lock portion 48. Move beyond the position and open the shoji to the fully open position.

DESCRIPTION OF SYMBOLS 1 Shoji 2 Window frame 3 Lower frame 6 Window opening / closing apparatus main body 9 Upper surface part 10 Mounting plate part 14 Bracket 20 Worm shaft 21 Worm 24 Operation handle 25 Wheel gear 27 Rack gear 28 Output shaft 30 Output arm 33 Intermediate arm 34 Arm bracket 41 Fully open Half-open switch 44 Cam 48 Lock part 52 Lock block

Claims (7)

In an apparatus for opening and closing a shoji that is attached to a window frame with a hanging bracket so as to be freely opened and closed, the apparatus main body has a substantially U-shaped surface having a horizontal plane and an inclined surface that is inclined indoors extending in the direction in which the window frame is found. parts and has a mounting plate portion to enter the right angle extending in the window frame inwardly of the window frame from the horizontal plane of the upper surface portion, the back surface side of the upper surface portion bracket is provided so as to surround the mounting plate portion, A rack gear is housed in the bracket so as to reciprocate in the direction of finding, and a wheel shaft provided at a right angle to the mounting plate portion extends along the mounting plate portion, and a wheel gear meshing with the rack gear is pivotally attached to the wheel shaft. An upper bearing fitting portion that rises at right angles to the finding direction and is inclined toward the indoor side in the prospective direction is formed on the upper surface portion of the apparatus main body, and extends downward from the center line of the upper bearing fitting portion. On the lower axis A worm shaft rotated by a handle so as to be supported by the lower bearing and a bearing fitted to the upper bearing fitting portion is rotatably mounted, and a worm is provided on the worm shaft so as to mesh with the wheel gear. , window opening and closing apparatus comprising an output arm having one end coupled to the rack gear, the intermediate arm having one end connected to the other end of the output arm in the middle is connected to the other end is connected to the bracket shoji.   The window opening / closing apparatus according to claim 1, wherein an arm bracket is coupled to one end of the intermediate arm via an arm bracket shaft, and the arm bracket is fixed to the bracket.   The window opening and closing device according to claim 1, wherein a side portion is formed in the middle of the intermediate arm, and the other end of the output arm is connected to the side portion.   The main body is provided with a cam that is rotated by a full-open / half-open switch, the rack gear is formed with a lock portion having a control slot, and the cam has a restraining wall formed at one end of the control slot of the lock portion. The window opening and closing device according to claim 1, further comprising a hook that can be engaged.   The window opening and closing device according to claim 4, wherein the lock portion is formed of a lock block having a control long hole into which the flange portion is inserted, and the lock block is fixed to the rack gear.   The window opening and closing device according to claim 4 or 5, wherein the cam has a flat surface portion, and an engaging surface is formed on the lock portion so that the flat surface portion abuts when the flange portion enters the control slot.   A window comprising the window opening and closing device according to any one of claims 1 to 6.

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