JPH0524783Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a window opening/closing device that opens and closes windows installed in high places of buildings, such as smoke exhaust windows, by remote control. Regarding.

[Prior Art] Conventionally, in a window opening/closing device, a wire rope is connected to a window plate that is biased in the window opening direction, and the window is closed by winding the wire rope around a rotating drum by operating a handle, and pressing an opening button. A device is known in which the latch for preventing reverse rotation is disengaged from the gear of the rotating drum by pressing , and the wire rope is let out from the rotating drum, thereby opening the window.

[Problems to be solved by the invention] However, in the above-mentioned opening/closing device, a bearing clutch method (Japanese Unexamined Patent Application Publication No. 61-40982 and Japanese Utility Model Application No. 62-36747), but since this bearing clutch method transmits the rotational force of the handle to the rotating drum by coming into contact with the floating body (bearing), the lubricant ( When the amount of grease (grease) decreases, it becomes difficult for the transmission members to come out of contact with each other, making it easier for the transmission members to rotate together.

Therefore, with the conventional device, there is a dangerous problem in that the handle may be reversed together with the rotating drum when the window is opened.

The present invention is an attempt to solve the above-mentioned conventional problems, and fixes an upper handle lock gear and a lower handle lock gear to the handle and rotating drum.
A handle lock fitting is formed between the two gears so that it can engage and slide with the upper handle lock gear, and can engage only in one direction with the lower handle lock gear, and is moved toward the upper handle lock gear by a lock release spring. By biasing and intervening and configuring, the handle and the rotating drum are connected only when the handle is rotated to the right (wire rope winding direction), and the handle is automatically connected at other times. The purpose is to provide a window opening/closing device that is held in a free state so that the handle does not rotate backwards when opening the window, thereby ensuring safety when opening the window. be.

[Means for solving the problem] That is, the present invention opens a window by winding a wire rope connected to a window panel that is biased in the window opening direction onto a rotating drum by operating a handle, and then opening the window by operating a handle. In a window opening/closing device that opens a window by releasing a latch from a gear by operating a release button provided on the rotary drum and letting out a wire rope from a rotating drum, the rotating drum has an upward saw blade shaped tooth section in the center of the rotating drum. A lower handle lock gear having a lower handle lock gear is fixed to the handle, and an upper handle lock gear having downward V-shaped teeth is fixed to the handle. Between the gears, a handle locking fitting having an inclined surface on the upper surface that can engage and slide with the upper handle lock gear, and a side surface that can engage only in one direction with the lower handle lock gear is attached to the upper handle by a lock release spring. The handle lock fitting is biased toward the lock gear and is normally not engaged with the lower handle lock gear, but the handle lock metal fitting is brought into contact with the handle lock spring held in the gear case when winding the wire rope. to limit rotation,
The inclined surface is provided so as to slide and mesh with the lower handle lock gear, and the height of the teeth of the upper handle lock gear and the inclined surface of the handle lock fitting is set so that the height of the inclined surface of the upper handle lock gear and the lower handle lock gear is adjusted so that the height of the inclined surface of the upper handle lock gear and the lower handle lock gear is adjusted so that the height of the inclined surface of the upper handle lock gear and the inclined surface of the handle lock fitting is adjusted so that the height of the inclined surface of the upper handle lock gear and the inclined surface of the handle lock fitting is set so that the height of the inclined surface of the above mentioned upper handle lock gear and the inclined surface of the handle lock fitting is adjusted so that the height of the inclined surface of the above mentioned upper handle lock gear and the inclined surface of the handle lock fitting is adjusted so that the height of the inclined surface of the above mentioned upper handle lock gear is adjusted to the height of the inclined surface of the above mentioned upper handle lock gear and the lower handle lock gear. The above problem was solved by setting the stroke to be slightly larger than the movement stroke from the non-meshing state to the meshing state.

[Embodiment] Below, an embodiment of the present invention will be described in detail based on the drawings. As shown in FIGS. 1 to 3, a support plate 2 is fixed in an operation box 1 with screws 3, and A shaft hole 4 formed in the support plate 2 and a shaft 5 projecting from the seat plate 1a of the operation box 1 are fitted with a shaft 7 projecting from the center of the upper end of the rotating drum 6 and a shaft hole 8 formed from the center of the bottom end thereof. In addition, a rotary drum 6 is rotatably installed inside the operation box 1.

One end of a wire rope 9 is wound around the rotating drum 6, and the other end of the wire rope 9 extends outward from the operation box 1, and is connected to a plurality of window plates 10 connected as shown in FIG. It is connected.

The rotating drum 6 and the handle 11 are connected to a lock mechanism 12.
They are connected so that power transmission can be interrupted or interrupted.

The lock mechanism 12 includes a lower handle lock gear 13, an upper handle lock gear 14, a handle lock fitting 15, an unlocking spring 16, a handle lock spring 17, and a gear case 18 that houses these parts, as shown in FIG. It is formed by.

The lower handle lock gear 13 has upward saw blade-shaped teeth 13a formed on the same circumference, and a polygonal shaft 13b protruding downward from the center. However, a polygonal shaft hole 7 is bored at the center of the shaft 7 of the rotating drum 6.
The lower handle lock gear 13 is fixed to the rotating drum 6 by being fitted into the lower handle lock gear 13a.

The upper handle lock gear 14 has downward V-shaped teeth 14a formed on the same circumference, and a polygonal shaft 14b standing upright from the center of the upper surface. The upper handle lock gear 14 is fixed to the handle 11 by fitting into a polygonal shaft hole 11a drilled in the upper handle 11 and then fastening with a screw 19.

The gear case 18 is fixed to the support plate 2 with screws and integrated with the operation box 1, and the polygonal shape of the upper handle lock gear 14 is inserted into the shaft hole 18a bored in the center of the top wall. Shaft 14b
As a result, both the upper and lower handle lock gears 14, 13 are housed in the gear case 18, and the handle 11 is supported by the gear case 18.

The handle lock fitting 15 has a plurality of lock rods 15b projecting radially from a central disk portion 15a at equal intervals.

The lock rod 15b... is provided with each tooth 1 of the upper and lower handle lock gears 14, 13 so as to be able to mesh with the upper and lower handle lock gears 14, 13.
4a..., 13a... are provided in an appropriate number in correspondence with the positions of the gears 4a..., 13a... on the upper surface thereof, as shown in FIG. a' is symmetrically inclined, and the vertical plane b of the teeth 13a of the lower handle lock gear 13 is symmetrically formed on the side.
A vertical side surface b′ is formed so that it can be engaged with the

The handle lock fitting 15 is interposed between the upper and lower handle lock gears 13 and 14, and is urged upward by a lock release spring 16 interposed between the handle lock gear 13 and the lower handle lock gear 13. Upper handle lock gear 1
4, and when the handle 11 is not rotating, it is held without being engaged with the lower handle lock gear 13.

Here, the tooth portion 1 of the upper handle lock gear 14 is
4a height and inclination of handle lock fitting 15
The height a' is set to be slightly larger than the stroke required for the handle lock fitting 15 to push down and engage the lower handle lock gear 13 from the non-meshing position.

A handle lock spring 17 is held within the gear case 18, and lower curved portions 17a, 1 are provided opposite to the handle lock spring 17.
7b, the end of the locking rod 15b of the handle lock fitting 15 comes into contact with the handle lock fitting 15, thereby restricting the rotation of the handle lock fitting 15.

Further, the operation box 1 is provided with a release button 19 and a return button 20.

Also, inside the operation box 1, the base end of an operating lever 21 equipped with a latch 24 is aligned with the arrow c shown in FIG.
It is supported by a rotating shaft 22 so as to be rotatable in the direction ←→c'.

This actuating lever 21 is biased by a rotational force in the direction of the arrow c' shown in the figure by a spring 23, and the tip of the actuating lever 21 resists this spring force to push against the release button 19 and the side surface of the return button 20. As a result, the actuating lever 21 is held in the position shown by the solid line in FIG. only, and reverse rotation in the opposite direction of arrow d is prevented.

A notch 19 is provided at the top of one side of the release button 19.
a, there is a slope 20 at the top of one side of the return button 20.
By pressing down the release button 19 against the spring force of the compression spring 25 interposed therebetween, the tip of the operating lever 21 is fitted into the notch 19a. As a result, the actuating lever 21 is rotated by the spring 23 in the direction of the arrow c' shown in the figure, and the latch 24 is disengaged from the gear 6a, so that the rotating drum 6 can be rotated in reverse. , the wire rope 9 is let out and the window is opened.

When the return button 20 is pushed down against the spring force of the compression spring 26 in the above state, the operating lever 2
1 is pressed outward, the operating lever 21 is rotated in the direction of arrow c shown in the figure against the spring force of the spring 23, returns to the position shown by the solid line in the figure, and is latched. 24 meshes with the gear 6a, and the rotating drum 6 is prevented from rotating in reverse.

Further, the release button 19 and the return button 20 are not limited to the above-mentioned structure, and may have other known structures, and their structures are arbitrary. In FIG. 1, reference numeral 27 indicates a brake mechanism built into the rotary drum 6, and reference numeral 28 indicates a cover.

Therefore, in the above configuration, normally the handle 11
The rotating drum 6 is in the "off" state, but when the handle 11 is rotated in the right direction (the direction in which the wire rope is wound) in this state, the upper handle lock gear 14 rotates together with the handle 11 in the same direction. As a result, the handle lock fitting 15 meshing with the gear 14 is similarly rotated, but the ends of the locking rods 15b of the handle lock fitting 15 are connected to the lower bent portion 17a of the handle lock spring 17,
17b, the handle lock fitting 15
rotation is restricted.

When the handle 11 is further rotated, the inclined surface a of the tooth portion 14a of the upper handle lock gear 14
However, the lock rod 1 in the handle lock fitting 15
5b, but since the upper handle lock gear 14 is fixed in the axial direction, the handle lock metal fitting 15 slides on the inclined surface a' of the lock release spring 1.
The lower handle lock gear 13 resists the spring force of 6.
It is pushed down and moved to the side.

As a result, the side surface of the handle lock fitting 15
b' is the tooth portion 1 of the lower handle lock gear 13
The rotating force of the handle 11 is transmitted to the rotating drum 6 via the upper handle lock gear 14, the handle lock fitting 15, and the lower handle lock gear 13, and the wire rope 9 is wound around the drum 6. Window board 1 by being taken
0 is windowed.

When the handle 11 is released, the handle lock fitting 15 is pushed back toward the upper handle lock gear 14 by the lock release spring 16, and is disengaged from the lower handle lock gear 13.

Therefore, when opening the window, the handle 11 does not rotate when the rotary drum 6 is made reversely reversible by the release button 19 and the wire rope 9 is let out from the rotary drum 6.

[Effect of the invention] Since the window opening/closing device according to the invention is configured as explained above, the handle 11 and the rotating drum 6 are connected only when the handle 11 is rotated to the right, and at other times. The handle 11 and rotating drum 6 are held in the "off" state by the handle lock metal fitting 15 being disengaged from the lower handle lock gear 13 by the lock release spring 16, so the release button 19 can be pressed in an emergency. When the wire rope 9 is unwound and the rotating drum 6 is reversed during fenestration when the latch 24 is released from the gear 6a, the handle 11 is completely stopped and will not reverse, ensuring safety during fenestration. The handle 1 is secured when closing the window.
The handle 11 and the rotary drum 6 can be immediately connected and rotated to wind up the wire rope 9 by simply rotating the handle 11 clockwise in the forward direction without requiring any other special operation. This has the effect of quickly closing the window.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional side view showing an embodiment of a window opening/closing device according to the present invention, FIG. 2 is a view taken along the line shown in FIG. FIG. 4 is an exploded perspective view of the locking mechanism in the same embodiment, FIG. 5 is an enlarged cross-sectional view taken along the - line in FIG. 4, and FIG. 6 is a front view showing an example of use of the same embodiment. 1... Operation box, 6... Rotating drum, 6a
... Gear, 9 ... Wire rope, 10 ... Window plate, 11 ... Handle, 13 ... Lower handle lock gear, 14 ... Upper handle lock gear, 1
3a, 14a...teeth, 15...handle lock fitting, 16...lock release spring, 17...
Handle lock spring, 19...Release button, 24...Latch, a...Slope, b...Side.

Claims (1)

[Scope of utility model registration request] The window is opened by winding the wire rope connected to the window plate, which is biased in the window opening direction, onto a rotating drum by operating the handle, and by operating the release button provided on the operation box, the latch is released from the gear and the wire rope is opened. In a window opening/closing device provided to open a window by being let out from a rotating drum, a lower handle locking gear having upward saw blade-shaped teeth is fixed to the center of the rotating drum, and a downward V is attached to the handle. An upper handle lock gear having a letter-shaped tooth portion is fixed, and both gears are housed in a gear case fixed to an operation box,
A handle lock fitting having an inclined surface on its upper surface that can engage and slide with the upper handle lock gear and a side surface that can engage with the lower handle lock gear only in one direction is provided between the two gears by means of a lock release spring. The handle lock metal fitting, which is biased toward the upper handle lock gear and is normally not meshed with the lower handle lock gear, comes into contact with the handle lock spring held in the gear case when winding the wire rope. The inclined surface is provided so as to be in contact with each other to limit rotation, so that the inclined surface slides and meshes with the lower handle lock gear, and the height of the teeth of the upper handle lock gear and the inclined surface of the handle lock metal fitting is adjusted. A window opening/closing device characterized in that the stroke of movement of the handle lock fitting and the lower handle lock gear from a non-meshing state to a meshing state is set to be slightly larger.