JPH0328153Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an electric opening/closing machine for a blind shutter that is attached to a window of a building.

[Problems to be solved by the prior art and the invention] Conventionally, blind shutter opening/closing machines installed on the windows of buildings, etc., have been equipped with dedicated manual and electric opening/closing machines, and their installation locations have varied depending on the shutter. It was located near the take-up shaft (transmission shaft). Therefore, in order to change from an electric type blind shutter to a manual type after installation, the transmission shaft that connects to the manual operation mechanism inside the room must be supported by penetrating the wall. Providing a manual switching device that can be operated indoors similarly requires construction work such as penetrating walls, which is a complicated work. On the other hand, in order to change from a manual type to an electric type, it is necessary to install an electric-only switch outside and install a switching device so that the handle shaft does not rotate normally and rotates only when operated manually. However, this also had the disadvantage of being a difficult construction project.

[Means for solving the problem] In view of the above-mentioned circumstances, the present invention was created with the aim of providing an electric opening/closing machine for a blind shutter that can eliminate these drawbacks. A switchgear with a built-in speed reducer is installed above the shutter, and an electric switchgear and a manual operation mechanism are installed on the indoor side, and a drive shaft and a switchgear receive rotational transmission from both the manual operation mechanism and the electric switchgear. The drive shaft is connected to an input shaft, and the drive shaft is provided with a manual switching device.

With this configuration, the present invention makes it possible to install a switch with as little bulk as possible on the indoor side, and even if a misalignment or dimensional error occurs during through-hole drilling or installation work, It allows for normal rotation transmission. In addition, in the event of a power outage, a switching device allows for easy manual opening and closing operations indoors.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, 1 is a slat (blade) constituting the shutter curtain of a blind shutter A, which is formed as an aluminum extrusion material.
Reference numeral 2 denotes an opening/closing device which has a built-in speed reducer and opens and closes the slat 1 of the blind shutter A in vertical motion, and also causes the slat 1 to change its inclination angle. 2a is a drive shaft of the opening/closing device 2. Reference numeral 3 denotes a transmission shaft, both ends of which are inserted into a joint shaft 4a of a universal joint 4 and connected to a drive shaft 2a and a drive shaft 5 with bolts 3a, nuts 3b, etc., respectively. A gear 6 is attached to the drive shaft 5.
and a manual switching device 7 are installed. On the other hand, 8 is an electric switch installed on the indoor side, and a bevel gear 9 is attached to the output shaft.
meshes with a bevel gear 11 coaxial with the gear 10. Further, this gear 10 meshes with the gear 6 and transmits the rotation of the electric switch 8 to the transmission shaft 3. Since the opening/closing device 2 has a built-in reduction gear as described above, there is no need to incorporate several stages of reduction mechanisms in the electric opening/closing device 8, so it may be relatively small and lightweight.

13 is a chain foil that is rotated by manual operation of the chain 12;
An engagement groove 14 is provided in the boss portion of No. 3, and by operating the switching device 7 with a chain (not shown), the switching device 7 slides the gear 6 to disengage the gear 10, and at the same time, the switching device 7 disengages the gear 6 from the gear 10. 5 and the engagement groove 14, the drive shaft 5, transmission shaft 3, and opening/closing device 2 are driven by manual operation of the chain 12 to open and close the blind shutter. The chain 12 and chain wheel 13 are a manual operation mechanism B that is not normally used, and are operated in place of the electric switch 8 during a power outage. Reference numeral 15 denotes a storage chamber in which the chain 12 is folded and stored so that the chain 12 does not constantly hang down inside the room and become unsightly, and is provided near the bottom of the chain foil 13. In the figure, 16 is the outer case of the blind shutter A.

In the embodiment of the present invention constructed as described above, the opening/closing device 2 with a built-in speed reducer is provided in the space above the drive shaft 2a of the blind shutter A, so that the electric opening/closing machine 8 is made small and lightweight. Further, the length of the penetrating transmission shaft 3 can be easily cut and adjusted according to the actual situation at the site. Furthermore, since both ends of the transmission shaft 3 are connected via the universal joint 4, normal rotation transmission can be achieved even if the shaft center is misaligned. Furthermore, it is easy to install the manual switching device 7 and the manual operation mechanism B together.

[Operations and Effects] In summary, the present invention is constructed as described above, and the electric opening/closing machine of the blind shutter is divided into two parts: an external upper opening/closing device with a built-in reducer, and an indoor opening/closing device. On the indoor side, the opening/closing machine is smaller and lighter, making it easier to maintain and manage, and the transmission shaft is connected to the drive shaft at both ends with universal joints, making it extremely easy to adjust the dimensions to match the wall thickness. It is easy to use, and even if the shaft center becomes misaligned during installation, normal rotation transmission can always be achieved. Additionally, it is easier to install a manual switching device and a manual operation mechanism, and construction efficiency can be further improved.

[Brief explanation of the drawing]

The drawing shows one embodiment of the electric opening/closing machine for a blind shutter according to the present invention.
The figure is a side sectional view of the blind shutter. In the figure, 1 is a blind shutter, 2 is a switchgear, 2a is a drive shaft, 3 is a transmission shaft, 3a is a bolt,
3b is a nut, 4 is a universal joint, 4a is a joint shaft, 5 is a drive shaft, 6 and 10 are gears, 7 is a manual switching device, 8
is an electric opening/closing machine, 9 and 11 are bevel gears, 12 is a chain, 13 is a chain foil, 14 is an engagement groove, 15 is a storage chamber, 16 is a shutter case, A is a blind shutter, and B is a manual operation mechanism. .

Claims (1)

[Scope of utility model registration request] An opening/closing device with a built-in speed reducer is installed above the external blind shutter, and an electric opening/closing mechanism and a manual operation mechanism are provided on the indoor side, and a drive shaft receives rotational transmission from both the manual operation mechanism and the electric opening/closing mechanism. An electric opening/closing machine for a blind shutter, characterized in that the input shaft of the opening/closing device is connected to the input shaft of the opening/closing device, and the drive shaft is provided with a manual switching device.