JPH07113370A - Opening / closing device for high windows - Google Patents

Abstract

(57) [Summary] [Structure] When the input shaft 3 of the handle is rotated clockwise, the winding drum 5 is rotated counterclockwise through the planetary gear mechanism and the wire is wound. The winding drum 5 is driven at a reduced speed by a gear ratio of the sun gear 7 and the internal gear 11. When the lock lever 15 is unlocked by operating the fenestration button and swung to the retracted position of the chain line, the lock claw 18
Is separated from the ratchet wheels 9 and 12, the clockwise rotation of the winding drum 5 is allowed, and the window is opened while the wire is being fed. The rotational force of the winding drum 5 at that time is not transmitted to the input shaft 3 of the handle by the planetary gear mechanism. [Effect] Since the deceleration function of the winding drum when the window is closed and the clutch function that disconnects the drive connection between the winding drum and the input shaft when the window is opened are provided by one planetary gear mechanism,
The device is compactly assembled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for opening and closing a high window provided at a high place of a building such as a smoke exhaust window.

[0002]

2. Description of the Related Art As a conventional high window opening / closing device, a winding drum having a wire connected to a shoji urged in the direction of opening the window is provided at a low place in a building. The winding wire is wound around the winding drum by operating the handle to close the window against the urging force of the shoji screen, and the winding drum is locked to keep it in the closed window state. It is known that a shoji is opened by a biasing force while feeding out a wire from a drum.

In such a type of opening / closing operation device, the winding operation of the handle can be lightened when the window is closed.
At the time of opening the window, it is necessary to consider that the handle does not rotate with the take-up drum to prevent danger.

Therefore, conventionally, a large operating force is obtained by connecting the input shaft of the handle and the winding drum via a reduction gear train, and the input shaft is driven between the input shaft and the winding drum. The force was transmitted to the take-up drum but the drive force was not transmitted from the take-up drum to the input shaft by using a one-way clutch to prevent the steering wheel from turning around. The provision of the clutch has a drawback that the device becomes large in size.

Further, in such an opening / closing operation device, as a means for locking the take-up drum so that the take-up drum cannot rotate in the take-out direction at the time of closing the window, the take-up drum is integrally rotated with the take-up drum. A lock mechanism that locks and disengages the lock claw that prevents only the lock is used.

Here, as means for returning the state in which the lock claw is disengaged from the ratchet wheel for opening the window, to the state in which the lock claw is again engaged with the ratchet wheel, for example, a conventional one is disclosed in Japanese Utility Model Laid-Open No. 2-7178.
As described in Japanese Patent Publication No. 7, a return pawl is provided on the other end side of the lever having the lock pawl provided on one end side to engage with the pawl wheel and prevent only rotation in the winding direction. , When the window is opened, the return pawl can be engaged with the ratchet wheel instead of the lock pawl as the lever swings, and at the beginning of window closing, that is, at the beginning of rotation of the winding drum in the winding direction. It is known that the lock claw is automatically returned to the position where it is engaged with the ratchet wheel by pushing the return claw engaged therewith and swinging the lever.

However, in such means, while the take-up drum is rotating in the payout direction, the return pawl is always engaged with the ratchet wheel while allowing rotation in the payout direction.
There was a problem that the hammering sound of the restoring nail was continuously generated and the resistance by the restoring nail was remembered.

[0008]

The high window opening / closing device of the present invention has been completed to solve the above-mentioned problems, and the invention of claim 1 is to open a shoji in a window frame. The winding drum that winds the wire connected to the shoji of the high window that is urged and attached is rotatable relative to the input shaft that is rotatably supported on the base body by the handle connected to one end so that it can rotate in both forward and reverse directions. And a sun gear on the other end of the input shaft, and a locking tooth on the outer circumference and an internal gear on the inner circumference to form a drum side ratchet wheel that rotates integrally with the winding drum, and an outer circumference. Is also provided with a planetary side ratchet wheel which also has a locking tooth formed thereon and axially supports a planetary gear which meshes with the sun gear and the internal gear, and is engaged with the locking tooth of both the ratchet wheels to be set respectively. In addition, a lock device that locks each lock claw that prevents rotation in only one direction can be engaged and disengaged with both claw wheels. Has a structure in which a click mechanism.

According to a second aspect of the present invention, in the first aspect, the lock mechanism supports the lock claw, and the lever is rocked and biased to a retracted position in which the lock claw is always separated from both the ratchet wheels. , Locked to the lever to hold the lever in an engaging position where the lock pawl engages both ratchet wheels against the biasing force, and
A holding member that is normally urged to move in the direction of locking the lever, a release member that moves the holding member in the direction of releasing the locking of the lever against the urging force, and is fixed to the input shaft. Rotation of the take-up drum in the take-up direction is provided with a return gear and a driven gear that meshes with the return gear and is fitted on the support shaft of the lever in a frictionally coupled manner with the lever to freely rotate. At the beginning of the above, the lever at the retracted position is swingably returned to the engaging position by the meshing and friction coupling of the return gear and the driven gear.

[0010]

The operation and effect of the present invention operates as follows. When the input shaft is rotated in the forward direction by the handle when closing the window, the planetary gears rotate in the opposite direction due to the meshing with the sun gear, and try to revolve in the forward direction along the internal gear of the drum side ratchet wheel. . At that time, the planetary gear wheel that pivotally supports the planetary gear is engaged with the lock claw of the lock mechanism to prevent the forward rotation of the planetary gear wheel. The winding drum rotates in the opposite direction to the winding direction to wind the wire.
In this case, the take-up drum is rotationally driven after being decelerated by the gear ratio of the sun gear and the internal gear.

When the rotation of the input shaft is stopped, a lock claw is engaged with the drum side ratchet wheel to prevent its rotation in the forward direction.
Since the winding drum is prevented from rotating in the feeding direction, the window is held in an arbitrary closed window state.

To restore the handle to a predetermined rotational posture for storage, rotate it in the opposite direction. When the input shaft rotates in the opposite direction accordingly, the planetary gears rotate in the positive direction and try to revolve in the opposite direction along the internal gears. In that case, since the planetary side ratchet wheel is allowed to rotate in the opposite direction, the input shaft rotates in the opposite direction while the winding drum is stopped, and the handle is restored to an arbitrary rotational posture.

At the time of opening the window, when the lock claw of the lock mechanism is disengaged from both the ratchet wheels, the winding drum is allowed to rotate in the forward direction, and the wire is unwound and the sliding screen is urged by the urging force. The window is opened.

At that time, the planetary gear only revolves around the sun gear in the forward direction together with the planetary side ratchet wheel while being meshed with a fixed position of the internal gear of the drum side ratchet wheel, and the input shaft is rotationally driven. Never. As a result, the handle connected to the input shaft does not rotate together.

That is, according to the first aspect of the present invention, the planetary gear mechanism is adopted to provide the deceleration function of the winding drum when the window is closed and the clutch function which prevents the handle from rotating together when the window is opened. Since it is covered by one, there is an effect that the device can be compactly integrated.

According to the invention of claim 2, it operates as follows. At the time of opening the window, when the locking of the lever by the holding member is released by the operation of the release member, the lever swings to the retracted position and the lock claw is disengaged from both the ratchet wheels. As a result, as described above, the rotation of the winding drum in the feeding direction is allowed and the window is opened.

When closing the window, when the input shaft is rotated in the forward direction, the return gear fixed to the input shaft rotates the driven gear on the support shaft of the lever meshing with the input gear, and the driven gear and the lever. The friction between the levers causes the lever in the retracted position to integrally swing back to the engaging position, the lock pawls engage both the ratchet wheels, and the holding member holds the lever in the engaging position. .

After that, when the rotation of the input shaft is continued, the driven gear idles on the support shaft of the lever, and the winding drum rotates in the winding direction to close the window as described above.

As described above, according to the second aspect of the invention, the lever supporting the lock claw is swingably returned to the engaging position by using friction at the beginning of the rotation of the winding drum in the winding direction. Therefore, unlike the case where the conventional return pawl is used, there is nothing that engages with the ratchet wheel when the take-up drum rotates in the feeding direction, and a tapping sound or resistance is felt as in the conventional case. There is an effect that can be prevented.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, reference numeral 1 is an opening / closing operation box that is installed in a room.
A lid plate (not shown) is attached to the upper surface of the handle, and the base end of the handle is rotatably supported on one side in the length direction of the lid plate, and the handle is It can be inverted and stored in a storage groove formed in the lid plate.

In the box 1, there is fixed a base body 2 for mounting in which a base plate 2a is covered with an upper plate 2b. On one side in the length direction of the base body 2, an input shaft 3 having a connecting hole 4 formed at an upper end surface for connecting with a drive shaft provided at a base end portion of the handle is rotatably supported. There is. On the input shaft 3, a winding drum 5 that winds a wire connected to a shoji urged in the window opening direction of a high window (not shown) is relatively rotatably fitted.

On the lower end side of the input shaft 3, a sun gear 7 forming a part of the planetary gear mechanism is formed. As shown in FIG. 3, on the lower surface of the winding drum 5, a drum side ratchet wheel 9 having locking teeth 10 on the outer circumference and an internal gear 11 on the inner circumference is provided. It is attached so that it can rotate together.

On the lower surface of the drum side ratchet wheel 9, locking teeth 10 are similarly formed on the outer circumference, and on the upper surface side, three planetary gears 13 meshing with the sun gear 7 and the internal gear 11 are engaged.
A planetary side ratchet wheel 12, which is pivotally supported at equal angular intervals, is rotatably fitted.

As shown in FIG. 1, a lock lever 15 having a substantially L-shape is provided on the diagonal side of the above-mentioned ratchet wheels 9 and 12.
It is swingably supported about a support shaft 16 which is rotatably supported by the base body 2, and each end of the lock lever 15 on the side projecting toward the ratchet wheels 9 and 12 has each ratchet wheel 9. , 12 each of the locking claws 18 that are locked to the locking teeth 10 are swingably supported within a certain angle range, and are always urged by the elastic force of the spring 19 in the direction of protruding outward. .

The lock lever 15 is urged by the elastic force of the tension spring 20 mounted between the lock lever 15 and the lower plate 2a of the base body 2 in the clockwise direction of FIG. 1, and as shown in FIG. ,
The first abutment portion 21 provided on the lock lever 15 hits a stopper 23 provided upright on the substrate 2a of the base 2 to restrict the swing thereof, whereby the lock lever 15 is
The lock claw 18 is set in a retracted position where it is separated from the locking teeth 10 of the ratchet wheels 9 and 12.

On the other hand, the counterclockwise swing of the lock lever 15 against the elasticity of the tension spring 20 is restricted by the second abutting portion 22 hitting the stopper 23, as shown in FIGS. At that time, the lock lever 15 is adapted to take an engagement position where each lock pawl 18 engages with the corresponding locking tooth 10 of the ratchet wheels 9 and 12.

When the lock claws 18 are engaged with the ratchet wheels 9 and 12, the rotation of each of the ratchet wheels 9 and 12 in the clockwise direction in FIG. 1 is prevented, while with respect to the counterclockwise rotation, the lock claws are rotated. 18
Further, the clockwise swinging against the elastic force of the spring 19 shown by the chain line in FIG. 5 and the counterclockwise swinging due to the restoring elastic force of the spring 19 shown by the solid line are repeated and allowed. .

In order to hold the lock lever 14 at the above-mentioned engaging position, a locking portion 26 for locking the extended end is provided at a position corresponding to the other extended end of the lock lever 15. Of the holding lever 25 is swingably supported about a shaft 27. A swinging force in the clockwise direction of FIG. 1 is applied to the holding lever 25 by the elasticity of the torsion spring 28.

As shown in FIG. 2, on the side of the extending portion 29 opposite to the side where the retaining portion 26 of the holding lever 25 is provided, as shown in FIG. 2, a releasing body having a substantially U-shaped cross section is inserted. 31
Guides 3 provided on the substrate 2a and the upper plate 2b of the base body 2, respectively
2 is provided so as to be freely slidable in the front-rear direction intersecting the length direction of the holding lever 25.

On the lower surface of the front end of the upper plate of the release member 31, there is provided a contact portion 33 that abuts on the front side surface of the extending portion 29 of the holding lever 25 in the clockwise direction. Further, an oblique cam surface 34 is formed on the upper end portion of the pillar of the releasing body 31, and an elongated window hole 35 is formed at a position extending from directly above the cam surface 34 of the upper plate to in front thereof.

At the upper position of the releasing body 31, the releasing body 3
The release button 36 provided with the pressing portion 37 that is fitted in the window hole 35 of the first relative free movement in the front-rear direction is vertically movable along the guide hole 38 formed in the upper plate 2a of the base body 2. A cam surface 39 that is mounted on the pressing portion 37 and is aligned with the cam surface 34 of the releasing body 31 is formed. The release button 36 is always urged upward by the elastic force of the compression spring 40 to a certain position shown by the solid line in FIG.

Therefore, the releasing member 31 is urged by a sliding force to the front by pulling the abutting portion 33 by the extending portion 29 of the holding lever 25 which is urged in the clockwise direction in FIG. , The cam surface 34 is the cam surface 39 of the release button 36.
Sliding is regulated by hitting against.

The release button 36 is used for the box 1
It is designed so that it can be pushed down in conjunction with a window opening button (not shown) provided on the cover plate.

As shown in FIGS. 1 and 2, a return gear 42 is fitted on the upper surface of the take-up drum 5 so as to rotate integrally with the input shaft 3 of the handle, and the lock lever 15 has the above-mentioned structure. As shown in FIG. 6, a driven gear 43 that meshes with the return gear 42 is integrally fixed to the support shaft 16 by fitting a cylindrical portion connected to the lower surface thereof. A compression spring 44 is mounted between the driven gear 43 and the base end of the lock lever 15 so as to frictionally couple the two.

A gear 46 is formed on the outer periphery of the upper flange of the winding drum 5, and the gear 46 is provided on the upper plate 2a of the base 2 as shown in FIG. Of the input gear 49 of FIG.

The present embodiment has such a structure, and its operation will be described below. First, the case of closing the shoji screen will be described, but for convenience sake, the state in which the lock lever 15 is held at the engagement position shown by the solid line in FIG. 1 will be described.

At the time of closing the window, the input shaft 3 is rotated clockwise in FIG. 1 by raising the handle housed in the cover plate of the box 1 and rotating it. Then, as shown in FIG. 7 (A), the planetary gears 13 pivotally supported by the planetary-side ratchet wheel 12 rotate counterclockwise by meshing with the sun gear 7 formed on the input shaft 3.

At the same time, the planetary gear 13 tends to revolve clockwise along the internal gear 11 of the drum side ratchet 9 as shown in FIG. At this time, since the lock pawl 18 is engaged with the locking tooth 10 of the planetary side ratchet 12 to prevent its clockwise rotation, the drum side ratchet 9 is locked as shown in FIG. Rotate counterclockwise.

As a result, the take-up drum 5 integrated with the drum side ratchet 9 rotates counterclockwise, the wire a is taken up, and the shoji screen is closed. In that case, the winding drum 5 is
The sun gear 7 and the internal gear 11 are decelerated by the gear ratio and are driven to rotate, that is, the window is closed with a small operating force.

When the input shaft 3 rotates, the return gear 42 integrated with the input shaft 3 rotates, but since the lock lever 15 is held at the engagement position, the driven gear 43 moves between the input gear 3 and the lock lever 15. Slip and spin idle.

When the clockwise rotation of the input shaft 3 is stopped,
Since the lock claw 18 is locked to the drum side ratchet 9 and its clockwise rotation is blocked, rotation of the take-up drum 5 in the feeding direction is blocked so that it is held in an arbitrary closed window state. .

When a certain window closing operation is completed and the handle is stored in the storage groove provided in the cover plate of the box 1, the handle is rotated counterclockwise so as to fit in the storage groove. When the input shaft 3 rotates in the counterclockwise direction accordingly, the planetary gear 13 rotates clockwise as shown in FIG. 8 (A), and along the internal gear 11 as shown in FIG. 8 (B). Try to revolve counterclockwise. In that case, the same figure (C)
As shown in FIG. 7, the planetary side ratchet wheel 12 is allowed to rotate in the counterclockwise direction, so that the input shaft 3 rotates in the counterclockwise direction while the winding drum 5 is stopped and the handle is corrected to an arbitrary rotational posture. Therefore, you can turn it over and put it in the storage groove.

When opening the shoji screen, the opening button provided on the cover plate of the box 1 pushes the release button 36 down against the resilience of the compression spring 40 as shown by the chain line in FIG.

Then, the releasing body 31 is retracted by the engagement of the cam surfaces 34 and 39, and the contact portion 33 pulls the extending portion 29 of the holding lever 25, whereby the holding lever 2
5 is swung counterclockwise in FIG. 1 against the elastic force of the torsion spring 28. As a result, the locking of the lock lever 15 is released, and the lock lever 15 swings to the retracted position shown by the chain line in FIG. 1 and FIG. 4 by the elastic force of the tension spring 20.

When the pressing force of the fenestration button is removed, the release button 36 ascends and returns due to the restoring elastic force of the compression spring 40, and the pulling force of the holding lever 25 is removed, so that the torsion spring 28
The holding lever 25 swings back due to the resilience of the lock lever 26, and as shown in FIG. 4, the locking portion 26 stands by in a state of riding on the tip surface of the lock lever 15.

As the lock lever 15 swings to the retracted position as described above, the lock pawl 18 is disengaged from the engaging teeth 10 of both the ratchet wheels 9 and 12, as shown in FIG. Rotation in the clockwise direction, which is the direction, is permitted, and the shoji screen is opened by the urging force while the wire a is being paid out.

At this time, the gear 46 provided on the flange on one side of the winding drum 5 drives the input gear 49 of the brake device 48 to operate the brake device 48, and the shoji receives an impact at the window opening end. The window is opened promptly while the brakes are applied to the extent that there is not.

Further, the planetary gear 13 is in mesh with the internal gear 11 of the drum-side ratchet 9 at a fixed position, and the planet-side ratchet 12 is held.
In both cases, the sun gear 7 only revolves clockwise and the input shaft 3 is not rotationally driven. Therefore, even if the handle pops out of the box 1 so that it can be rotated and is left attached,
It is safe because the handle does not rotate. Of course, even when the handle is housed in the housing groove, it does not become a load and the take-up drum 5 cannot be unwound.

When the input shaft 3 is rotated in the clockwise direction when the window is closed again, the return gear 42 fixed to the input shaft 3 is engaged with the supporting shaft 1 of the lock lever 15 which is engaged therewith.
6 is rotated counterclockwise in FIG. 1, and the compression spring 4 between the driven gear 43 and the lock lever 15 is rotated.
The friction caused by 4 causes the lock lever 15 in the retracted position shown by the chain line in the figure to swing the holding lever 25 counterclockwise against the elastic force of the torsion spring 28 integrally with the driven gear 43. , Swings counterclockwise around the support shaft 16 and returns to the engagement position shown by the solid line in the figure, and the lock pawl 18 engages with both the ratchet wheels 9 and 12. At the same time, the holding lever 25 is swung clockwise by the elasticity of the torsion spring 28 and the locking portion 26 is locked, whereby the lock lever 1
5 is held in the engaged position.

After that, when the input shaft 3 continues to rotate in the clockwise direction, the driven gear 43 moves to the support shaft 1 of the lock lever 15.
6 and the take-up drum 5 rotates in the take-up direction to close the window as described above.

[Brief description of drawings]

FIG. 1 is a plan view showing a state in which a lid plate and a base upper plate of a box according to an embodiment of the present invention are removed.

FIG. 2 is a cross-sectional view of the present embodiment with a cover plate removed.

FIG. 3 is a partially cutaway exploded perspective view showing a portion of a planetary gear mechanism.

FIG. 4 is a partial plan view of the lock lever in a retracted position.

FIG. 5 is a partial plan view of the lock lever in the engagement position.

FIG. 6 is a partial cross-sectional view for explaining the automatic return function of the lock lever.

FIG. 7 is an operation explanatory view when the window is closed.

FIG. 8 is an operation explanatory view when the handle is stored.

[Explanation of symbols]

2: Base member 3: Input shaft 5: Winding drum 7: Sun gear 9: Drum side ratchet 10: Locking tooth 11: Internal gear 12: Planetary ratchet 1
3: Planetary gear 15: Lock lever (lever) 16:
Support shaft 18: Lock claw 25: Holding lever (holding member) 31: Release body (release member) 42: Return gear
43: driven gear 44: compression spring (for friction coupling) a: wire

Claims (2)

[Claims] 1. A winding drum for winding a wire connected to the shoji of a high window, which is attached to the window frame by urging the shoji to open the window, can be rotated in both forward and reverse directions by a handle connected to one end side. The input shaft rotatably supported on the base body is relatively rotatably fitted, the sun gear is provided on the other end side of the input shaft, and the engaging teeth are formed on the outer circumference and the internal gear is formed on the inner circumference. A drum-side ratchet wheel that rotates integrally with the winding drum, and a planet-side ratchet wheel that also has locking teeth formed on the outer periphery and that axially supports a planetary gear that meshes with the sun gear and the internal gear, are arranged in parallel. A locking mechanism is provided in which the respective lock claws that engage with the locking teeth of the both ratchet wheels and prevent only the rotation in one predetermined direction are engaged with and disengageable from the both ratchet wheels. A high window opening / closing operation device characterized in that 2. A lever, wherein the lock mechanism supports the lock claw and is urged to swing to a retracted position where the lock claw is always separated from the both ratchet wheels, and the lever is locked to the lever. A holding member that holds the lever at an engaging position where the lock claw engages with both the ratchet wheels against the biasing force, and is always biased to move in the direction of locking the lever, and the holding member. A release member for moving the member in the direction of releasing the lock of the lever against the biasing force, a return gear fixed on the input shaft, and the return gear meshed with each other and supporting the lever. And a driven gear that is frictionally coupled to the lever and fitted in a freely rotatable manner on the shaft, and at the beginning of rotation of the winding drum in the winding direction, engagement of the return gear with the driven gear and Due to the friction coupling, the The opening / closing operation device for a high window according to claim 1, wherein the lever is configured to swing back to the engagement position.