JPS639766A - Operational limit position setting device for window - Google Patents

Abstract

PURPOSE:To prevent breakdown of stopper, by coupling the drive shaft of an intermittent reduction gear having a driven shaft rotatable intermittently by a predetermined angle for every rotation of a drive shaft to the shaft for opening/closing a window. CONSTITUTION:An intermittent rotary mechanism 21 having an output shaft 15 being coupled to the shaft for opening/closing a window is provided in an operating box 12. Gears 28, 33, 34 are arranged between a drive shaft 22 and a driven shaft 35 to be rotated intermittently by a predetermined angle at a time. A stopper 38 is provided contactably against an engaging projection 37 of the gear 35 so as to block the rotation of the output shaft 15. Since the speed can be reduced by rotating the driven shaft intermittently, the torque does not increase and the stopper can be prevented from breakdown.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention provides a system in which, when a window is operated by rotating an operating shaft to open and close, the operating range of the window can be arbitrarily set by regulating the rotation of the operating shaft. This invention relates to a window operating limit position setting device.

Problems to be Solved by the Prior Art and the Invention There are various types of windows that can be opened and closed, such as sliding windows, outward folding windows, and projecting windows. In the case of operation, a drive device is attached to the window frame, which is activated by the rotation of the operating shaft to drive the window plate that is attached to the window frame and opens and closes the opening, and the operating shaft is rotated by a manual handle or motor. The window panels are opened and closed by driving and activating the drive device, but by installing a speed reduction mechanism in the drive device, the operating shaft can be rotated with a small torque. As a result, even after the window plate, which is activated by the rotation of the operating shaft, closes the opening in the window frame and comes into contact with the sealing member of the window frame, the operating shaft rotates more than necessary, causing the sealing member to malfunction. In addition, in order to set the opening degree of the window, conventionally, the window plate was moved only within the desired range, and then the window plate was pressed against a stopper etc. to prevent further operation. In this case as well, the operating shaft tries to rotate even after the window plate hits the stopper, causing excessive force on the stopper and the part of the window plate that engages with the stopper. Due to the force applied, the window panels and stoppers were easily damaged.

Therefore, in order to solve these problems, when the window plate that operates in the window closing direction by rotation of the operating shaft crushes the sealing member of the window frame appropriately, and when the window plate that operates in the window closing direction One idea was to stop the rotation of the operating shaft itself when the opening of the frame was opened to the desired extent, but as mentioned above, a deceleration mechanism was attached to the drive device of the window plate. Therefore, the operating shaft rotates many times while the window plate moves between the two positions of the window closing position and the window closing position.
For this purpose, a screw stud is coaxially connected to the operating shaft, a nut is screwed onto the screw rod so that it can be screwed, and a stopper is provided that engages with the nut to limit the screwing range within a predetermined range. Or, the operating shaft is connected to the input shaft of a reduction mechanism that decelerates the rotation of the operating shaft rotating within the operating range of the window plate and outputs rotation within one rotation, and the outer periphery of the output shaft of this reduction mechanism is It has been proposed to form an engaging protrusion and provide a stopper around the output shaft that engages with the engaging protrusion to limit the rotation angle of the output shaft to a predetermined range. Natsu's movement distance is small, but his movement power increases, and...

Since the output shaft of the reduction mechanism is decelerated relative to the operation shaft, the torque increases, and there is a risk that the nut or the engaging protrusion of the output shaft will engage the stopper with a significantly large force and destroy the stopper. There is.

Means for Solving the Problems The present invention provides, as a means for solving the above-mentioned problems, an intermittent reduction gear device in which a driven wheel is intermittently rotated by a fixed angle every fixed rotation of a drive shaft on a window opening/closing operation shaft. The drive shaft is connected to the drive shaft, and a stopper is provided to prevent the driven shaft from rotating beyond a certain angle.

Functions and Effects of the Invention The window operation limit position setting device of the present invention has the above configuration,
By blocking the rotation of the driven shaft by the stopper, the rotation of the opening/closing operation shaft is prevented, and since the driven shaft is intermittently rotated and decelerated due to the continuous rotation of the drive shaft, the torque decreases with the deceleration. The stopper can be installed arbitrarily on the driven shaft without increasing the rotation of the driven shaft, and there is no risk of the stopper being destroyed by excessive force acting on the stopper when rotation of the driven shaft is blocked by the stopper. By doing so, the operating range of the window can be set arbitrarily.

Embodiment 1 An embodiment in which the present invention is applied to an outward folding window will be described below with reference to the accompanying drawings.

In Fig. 1, reference numeral 1 indicates a window hole formed in the upper part of the outer wall of the building, and a plurality of window holes are arranged in a row in the horizontal direction.
The lower edge of each window plate 2 fitted with a glass plate is hinged to support the window plate 2 so that it can freely swing outward, and the upper edge of each window hole 1 is A chain case 5 is fixed to support the sprockets and accommodate a chain 3 meshed therewith, and a gear box 6 is attached to the bottom surface of each chain case 5, the output shaft of which is connected to the sprocket inside the chain case. ,Also.

Between the gearboxes 6.6 adjacent to each other on the center and left side, a gearbox 8 with an input shaft 7 protruding from the bottom surface is fixed to the window hole 1, and the input shafts of the adjacent gearboxes 6.6 and , the output shaft of the gear box 8 and the input shaft of the adjacent gear box 6 are connected to a connecting shaft 1 that is spanned between them.
An operating box 12 supporting an operating handle 11 is fixed to the indoor surface of a pillar 14 below the gear box 8, and an output shaft 15 and a gear box 8 protrude from the upper surface of the operating box 12. The input shafts 7 of the operation box 12 are connected to each other by an operation shaft 16 extending between them, and the output shaft 15 of the operation box 12 is connected to a screw gear 17 formed on its outer periphery, as shown in FIG.
is meshed with a screw gear 20 connected to the rotating shaft 18 of the operating handle 11, and when the operating handle 11 is turned in one direction, the output shaft 15 rotates due to the meshing of the threaded gears 17 and 20, and this rotation is caused by the rotation of the operating shaft 16. Through gearbox 8
The transmission to the output shaft of each chain case 5
The output shaft of the gear box 6 rotates in the same direction via each connecting shaft 10, and the sprockets in each chain case 5 simultaneously rotate in the same direction, so that the chain 3 is paid out from within each chain case 5. As a result, each window plate 2 swings outward in unison to open the window.On the other hand, by turning the operating handle 11 in the opposite direction, each chain 3 is rotated by the reverse rotation of the sprocket. It is pulled into each chain case 5, and thereby each window plate 2
The sprockets of each chain case 5 are rotated by a gear box 8,
The speed is reduced relative to the operating shaft 16 by the gear train in the gear box 6 of each chain case 5, and therefore,
By rotating the operating shaft 16 many times using the operating handle 11, each window plate 2 is made to swing.

Inside the operation box 12, as shown in FIG.

An intermittent rotation mechanism 21 is attached to the upper part and the lower part, respectively, and as shown in FIG. 3, the intermittent rotation mechanism 21 has a support plate 24.
A hexagonal shaft portion 22a is formed at one end of the input shaft 22, and a flange 2 is provided on the outer periphery of one end of the input shaft 22.
5 and a hexagonal hole in the center, two teeth 26, 26 having only teeth at the same height as the flange 25 are protruded at a predetermined pitch, and the teeth on the outer periphery of the flange 25 are 26.26
A first gear 28 is fitted with a tooth groove 27 formed in the entire longitudinal direction of the cylinder by cutting out a portion corresponding to the groove between the cylinders. Five teeth 30 that mesh with the tooth groove 27 of the gear 28 over the entire length direction are formed at equal pitches, and adjacent teeth 30
．． A gear 32 having short teeth 31 that mesh only with the teeth 26 of the first gear 28 is formed in the middle of each gear 30, and a gear 29 similar to the first gear 28 is integrally joined back to back. A second gear 33 is rotatably fitted to the support shaft 23, and the second gear 33 rotates five times each time the first gear 28 rotates by meshing its tooth grooves 27 with the teeth 30.
The tooth groove 27 of the first gear 28 rotates intermittently in 1/2 rotation increments.
- Adjacent teeth 30.30 except when tooth 30 meshes with
In between, the collar 25 of the first gear 28 fits with the teeth 30 with slippage, so that it is held unrotatable, and the round shaft of the input shaft 22 fitted with the first gear 28 In the section, a third gear 34, which is the same as the second gear 33, faces oppositely to the second gear 33 and its adjacent teeth 30.3.
The flange 25 of the second gear 33 is fitted between the two gears 0 and 30, and the tooth grooves 27 and the teeth 30 are engaged with each other so that they can rotate freely.

Like the second gear 33, this third gear 34 also rotates intermittently by one-fifth of a rotation each time the second gear 33 rotates once, due to the engagement between the tooth grooves 27 and the teeth 30. Further, horizontally adjacent to the third gear 34, a fourth gear 35, which is substantially the same as one of the gears 32 constituting the second and third gears 33 and 34, is located between its teeth 30 and the tooth grooves 27 of the gear 34.
The fourth gear 35 is fitted to the support pin 23 so that it can rotate freely, and the fourth gear 35 also rotates intermittently by one-fifth of a rotation for every rotation of the third gear 34. However, an engaging projection 37 is formed on the outer periphery of the cylindrical portion 36 of the fourth gear 35, and a stopper 38 having engaging surfaces 38a and 38b that engages with the engaging projection 37 is located inside the support plate 24. When the engagement protrusion 37 engages with the engagement surfaces 38a and 38b, the fourth gear 35 is allowed to rotate only within a predetermined angle range smaller than one revolution. , the first gear 28, the second gear 33, the third gear 34, and the fourth gear 35, the speed is reduced three times by one-fifth each, and every time the first gear 28 rotates 255 times, the fourth gear rotates intermittently by one-fifth of a rotation, and within the angular range in which the engaging protrusion 37 of the fourth gear 35 engages the engaging surfaces 38a, 38b on both sides of the stopper 38.

The first gear 28 rotates 125 times, but this deceleration is due to intermittent rotation.

Since the pitch diameters of the first gear 28 and the fourth gear 35 are the same, no increase in torque occurs due to deceleration.

The intermittent rotation mechanisms 21 and 21 having the above configuration each have an input shaft 2
The connecting shaft 41 is mounted with two hexagonal shaft portions 22a facing each other, and these facing hexagonal shaft portions 22a, 22a each have a hexagonal center hole 40.
are fitted onto each hexagonal shaft portion 22a and are coupled to each other so as to be integrally rotatable.

The input shaft 22 of the upper intermittent rotation mechanism 21 is connected to the operation box 1
On the other hand, the input shaft 22 of the lower intermittent rotation mechanism 21 can be freely inserted and removed, and the operation box 1 corresponds to the lower part of the input shaft 22.
By screwing in the screw 43 screwed into the bottom surface of 2,
It is designed to move upward against the elasticity of a spring 44 installed between the hexagonal shaft portions 22a, 22a, and as shown by the chain line in the figure, the hexagonal shaft portion 22a of the input shaft 22
It can be moved upward until it escapes from the hexagonal hole No. 8.

Then, the operation shaft 1 is connected to the output shaft 15 of this operation box 12.
6, screw in the screw 43 on the bottom of the box 12 to connect the hexagonal shaft portion 22a of the input shaft 22 of the lower intermittent rotation mechanism 21 to the hexagonal shaft of the first gear 28, as shown by the chain line in FIG. the first gear 28 and the first gear 28 of the upper intermittent rotation mechanism 21 by letting it escape from the hole,
By rotating the output shaft 15 in a direction that swings each window plate 2 in the window closing direction, the engagement protrusion 37 of the fourth gear 35 of the upper intermittent rotation mechanism 21 engages either of the engagement surfaces 38a, 38b of the stopper 38. The output shaft 15 is held in a state where it does not rotate any further in the direction of closing the window plate 2, and the first gear 28 of the lower intermittent rotation mechanism 21 is rotated in the opposite direction to the rotation direction of the output shaft 15. direction so that the engagement protrusion 37 of the fourth gear 35 engages with either of the engagement surfaces 38a, 38b of the stopper 38, and the first gear 28 is held in a state where it does not rotate any further. The plate 2 is held in a closed position and pressed appropriately against the sealing member fitted in each window hole 1. In this state, the operating shaft 16 is connected to the output shaft 15, and then the operating handle 11 is By turning each window plate 2, each window plate 2 is swung in the window closing direction.

When the window plate 2 is in the desired opening position, the input shaft 22 of the lower intermittent rotation mechanism 21 is removed by removing the screw 43 on the lower surface of the operation box 12, as shown by the solid line in FIG.
The hexagonal shaft portion 22a is moved downward by the elasticity of the spring 44.
is fitted into the hexagonal hole of the first gear 28, thereby coupling the upper and lower first gears 28.degree. 28 so that they can rotate together.

For this reason, as shown in FIG. 1, each window plate 2 is swung in the window closing direction by rotating the operating handle 11 in the open state, and each window plate 2 is properly attached to the sealing member of each window hole 1. When pressed, the engagement protrusion 37 of the fourth gear 35 of the upper intermittent rotation mechanism 21 comes into contact with the stopper 38.
The operating handle 11 can no longer be turned, and the output shaft 15 is prevented from rotating any further.

Each window plate 2 is held in a closed position with the sealing member crushed appropriately, and in this closed state, each window plate 2 is swung in the closing direction by rotating the operation handle in the opposite direction. Then, when each window plate 2 assumes the desired window opening position, the engagement protrusion 3 of the fourth gear 35 of the lower intermittent rotation mechanism 21
7 comes into contact with the stopper 38, and the rotation of the input shaft 22 of the lower intermittent rotation mechanism 21 is prevented, and the rotation of the output shaft 15, which is integrally connected thereto, is prevented, and the operation handle 11 cannot be turned any further. It is not possible (because of this,
6. The first to fourth gears 28 of the intermittent rotation mechanism 21 of this embodiment are adapted to hold each window plate 2 in a desired opening position.
Since the pitch circles of 33, 34, and 35 have the same diameter, the fourth gear 35 rotates with the same torque as the first gear, that is, the output shaft 15.
When the engaging protrusion 37 engages with the stopper 38, no excessive force is applied to the stopper 38.

Note that in this embodiment, two intermittent rotating machines 121 are provided, and each intermittent rotating mechanism 21 individually sets the operating limit when the window plate 2 is closed and when the window is opened. , there is an advantage that the swinging posture of each window plate 2 when opening the window can be changed arbitrarily, but if this is not necessary, only one intermittent rotating machine 4921 is used, and the fourth gear 35 engaging protrusions 37 may be engaged with both engaging surfaces 38a and 38b of the stopper 38, and each gear of the 1 intermittent rotation mechanism 21 may be of another type such as a Geneva gear. May be used.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the overall configuration of an embodiment of the present invention, FIG. 2 is a sectional view of an operation box equipped with an intermittent rotation mechanism,
FIG. 3 is a perspective view of the intermittent rotation mechanism. 1: Window hole 2: Window plate 16: Operation shaft 21: Intermittent rotation mechanism 22 Two-man power shaft (drive shaft) 35: Fourth gear (driven shaft) 38: Stopper Appearance Chuo Spring Co., Ltd.

Claims (1)

[Claims] The drive shaft of an intermittent speed reducer is connected to the window opening/closing operation shaft, and the driven shaft rotates intermittently by a fixed angle every fixed rotation of the drive shaft, and a stopper is provided to prevent the driven shaft from rotating beyond a fixed angle. A window operating limit position setting device characterized by