JPH0786297B2 - Manual operation mechanism for skylight opening and closing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual operation mechanism created so that an electric drive device for opening and closing a skylight can be manually operated as needed.

[0002]

2. Description of the Related Art FIG. 2 shows a skylight equipped with a transmission drive device.
It is a typical perspective view showing an example. It is not necessarily a realistic projection, as it is schematically illustrated to facilitate understanding of the structure and function. The fixed frame 1 is fixed to the edge of a window opening of a building (not shown) for use. The fixed frame 1 has a rail 1
a is provided to guide the slide frame 2 in the opening / closing direction as indicated by a reciprocating arrow AB. Reference numeral 2a is a ball for lightening sliding, and 2b is a glass plate fitted in a slide frame. Reciprocating arrow A on the slide frame 2
An electric open / close drive unit 3 is installed on the fixed frame 1 for opening / closing in the −B direction. The opening / closing drive unit 3 of this conventional example
Has a built-in drive motor, and the push-pull chain 4 is extended in the direction of arrow a or drawn in the direction of arrow b by the structure described later with reference to FIG. Slide open and close. The push-pull chain described above is a known member configured to be capable of transmitting a compressive force in the lengthwise direction in a straightly extended state.

FIG. 3 is a schematic view in which a main portion of the opening / closing drive unit 3 in the above-mentioned conventional example is cut and drawn. A frame 6 is fixed in the case 5, and a motor 7 is installed in the frame 6. The rotation output of the motor 7 is transmitted to the original gear 9 via the speed reducer 8 using a worm gear. The original gear 9 rotates the receiving gear 11 via the intermediate gear 10. The sprocket 13 attached to the gear shaft 12 of the receiving gear 11 meshes with the push-pull chain 4 described above, and extends or retracts the push-pull chain. The reason why the worm gear is used for the speed reducer 8 is that the motor 7 is prevented from being rotated by an external force by utilizing the automatic lock function of the worm gear. As a result, the slide frame 2 (FIG. 2) is opened and closed only when the motor 7 is rotated forward and backward, and the slide frame 2 is not opened or closed by an external force.

[0004]

As described above, in the conventional skylight opening / closing device (FIGS. 2 and 3), the function that the skylight is not opened or closed unless the motor is operated is useful for safety under normal use conditions. Is. However, if the motor cannot rotate due to a power failure or motor failure, the skylight cannot be opened or closed at all, which may cause a problem. For example, if the projection is approaching by a typhoon and the motor stops running and the skylight is left open, wind and rain may blow in and damage may occur.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a manual operation mechanism capable of opening / closing a skylight quickly, easily and safely as needed even when the motor is not operated. To aim.

[0006]

With respect to the basic principle of the present invention created to achieve the above object, the improvement points will be outlined below with reference to FIG. 3 (conventional example). I. A transmission member for manual operation is provided so that any one of the gears forming the gear train of the gear transmission mechanism, for example, the intermediate gear 10 can be rotated by hand, and b. The transmission between the manually operated gear (intermediate gear 10) and the speed reducer 8 is cut off (if it is not cut off, it cannot be rotated because it is warm-locked). As a specific configuration based on the above principle, the manual operation mechanism of the skylight opening and closing device according to the present invention is
In a skylight opening and closing device comprising a source gear that is rotated via a worm gear reducer and a receiving gear that is fixed by a sprocket for a push-pull chain and is rotated by the source gear, And a slide gear that is disengageable with respect to the original gear, a spring means that gives a force in a direction that meshes the slide gear with the original gear, and a slide gear that resists the force of the spring. It is characterized in that it is provided with a transmission member for applying a manual operation force in a direction of separating from the original gear and a rotational force.

[0007]

According to the above construction, since the slide gear is engaged with the original gear by the action of the spring when the manual operation force is not applied, the sprocket is rotationally driven by the rotation output of the motor as in the conventional example. The push-pull chain is extended and retracted to open and close the skylight. Then, when the slide gear is slid by applying a manual operating force to release the meshing with the original gear and manually rotate, the sprocket is rotated because it is a constant mesh with this slide gear, and the skylight is pushed through the push-pull chain. It is opened and closed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a cross-sectional view of essential parts showing one embodiment of a skylight opening and closing device according to the present invention. This embodiment is an improvement in which the present invention is applied to the conventional apparatus shown in FIG.
The same reference numerals as those in FIG. 3 (conventional example) denote the same or similar components as in the conventional example.
Next, a portion of FIG. 1 different from FIG. 3, that is, a portion improved by applying the present invention will be described. Slide gear 14
The gear shaft 15 is supported by an upper bearing 16 and a lower bearing 17 so as to be vertically slidable with respect to the frame 6. The slide gear 14 is a regular gear with respect to the receiving gear 11, and maintains a meshing relationship regardless of whether it slides up or down. Then, when the slide gear 14 slides upward, it meshes with the original gear 9, and when it slides downward, the mesh is disengaged. The slide gear 14 is constantly given a force in the pushing-up direction by the coil spring 18, and when it is not subjected to another manual operation force, it is raised to the position shown in FIG. 1 and meshes with the original gear 9. . In this state (the state where the manual operation force is not received), the slide gear 14 acts similarly to the intermediate gear arranged between the original gear 9 and the receiving gear 11, and similarly to the conventional example shown in FIG. Function.

A ring 19 is attached to the lower end of the gear shaft 15 of the slide gear so as to project below the case 5. When an appropriate hook (not shown) is engaged with the ring 19 and pulled downward, the slide gear 14 becomes the coil spring 1
It is moved down against the pushing force of 8, and the meshing relationship with the original gear 9 is released while it is still meshing with the receiving gear 11. When the slide gear 14 is manually turned through the ring 19 and the gear shaft 15 by turning a hook (not shown), the receiving gear 11 and the sprocket 13 fixed to the gear shaft 12 are rotated, and the push-pull chain 4 is moved. Through the opening and closing of the skylight (see the arrow A- of the slide frame 2 shown in FIG. 2 for details.
(Movement in the B direction) is performed. The above-mentioned manual operation can be performed easily and quickly because it is only necessary to hook a hook (not shown) on the ring 19, pull it down and turn it. Further, since the member that is slid or rotated by the above-mentioned manual operation is covered with the case 5, there is no fear that the manual operator will be injured accidentally, which is safe.

[0010]

As described above in detail, the drive motor is used to rotate the original gear that is rotated by the worm gear reducer and the receiving gear that is fixed to the push-pull chain sprocket and that is rotated by the original gear. By applying the present invention to a skylight opening / closing device provided, a sliding gear that is in constant mesh with the receiving gear and that can be disengaged from the original gear and the sliding gear is meshed with the original gear. If a spring means for giving a force in the direction and a transmission member for applying a rotational force and a manual operation force in the direction of separating the slide gear from the original gear against the force of the spring are provided, the motor does not operate. Even in a state (for example, power failure or motor failure), the skylight can be opened and closed quickly and easily by manual operation as necessary.

[Brief description of drawings]

FIG. 1 is a manual operation mechanism 1 of a skylight opening / closing device according to the present invention.
It is a principal part sectional view in an Example.

FIG. 2 is a perspective view of a skylight of a system in which a slide frame is driven via a push-pull chain.

FIG. 3 is a sectional view showing a main part of a conventional example of a skylight opening and closing device using a push-pull chain.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Fixed frame, 2 ... Slide frame, 3 ... Opening / closing drive part, 4 ... Push-pull chain, 5 ... Case, 6 ... Frame, 7 ...
Motor, 8 ... Reducer using worm gear, 9 ... Original gear, 10 ... Intermediate gear, 11 ... Receiving gear, 12 ... Gear shaft, 1
3 ... Sprocket, 14 ... Sliding gear, 15 ... Gear shaft, 16 ... Upper bearing, 17 ... Lower bearing, 18 ... Coil spring, 19 ... Ring for manual operation.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Kumata 80 Itado, Isehara City, Kanagawa Prefecture Ichihara Industrial Co., Ltd. Isehara Factory (56) References: 3-115792 (JP, U)

Claims (1)

[Claims] 1. A skylight opening and closing having an original gear rotated by a drive motor via a worm gear reducer, and a receiving gear fixed with a sprocket for a push-pull chain and rotated by the original gear. In the device, a slide gear that is in constant mesh with the receiving gear and that can be disengaged from the original gear, a spring means that gives a force in a direction that meshes the slide gear with the original gear, and the spring described above. And a transmission member for applying a rotational force and a manual operation force in a direction for separating the slide gear from the original gear against the force of
Manual operation mechanism for skylight opening and closing device.