JPH057432Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to the drive mechanism of an electric shutter.
In particular, the present invention relates to an opening/closing drive mechanism for an electric shutter equipped with a built-in opening/closing mechanism.

(Prior art) In the structure of the conventional drive mechanism of a built-in shutter opening/closing machine installed inside the shutter case, the shaft rotates without a shaft around the axis of a fixed shaft for slat winding. The top of the internal teeth of the internal toothed wheel for attaching the slat is meshed with and held by the drive toothed wheel at the tip of the output shaft of the electric motor, which is installed parallel to the upper part of the fixed shaft. The left and right side parts are engaged with and held by a pair of driven gears bearing on a fixed part, and the base end of an interlocking rotation shaft for a limit, which is bearing on a fixed part, is pivotally attached to the bottom of the internal teeth. Align with the transmission gear,
As a result, a structure was adopted in which the limit mechanism was driven in conjunction with the internal toothed wheel.

(Problem that the invention attempts to solve) However, according to such a conventional drive mechanism,
Runout occurs due to axial play in the driven gear wheel and the transmission gear wheel, which are rotated by bearings on the fixed part.
As a result, the internal toothed wheel rotating without an axis causes tilting vibration with respect to the plane perpendicular to the axis of the fixed shaft, which makes the rotational movement of each part of the drive mechanism uneven and causes unnecessary internal stress. In addition to generating
This poses a problem in that it places an unnecessary load on the electric motor and reduces the reliability of the shutter's opening and closing operations.

SUMMARY OF THE INVENTION Therefore, the present invention aims to provide a drive mechanism for an electric shutter that can reliably maintain the axis-mounted position of a gear wheel, especially a transmission gear wheel, which rotates by bearing on a fixed part, with high precision. The purpose is

(Means for Solving the Problems) In order to achieve the purpose, in the drive mechanism configuration of the electric shutter of the present invention, the inner toothed wheel 16 for attaching the slat, which rotates around the axis of the fixed shaft 1, is tooth 16e
, an electric motor 12 installed on the fixed shaft 1
The drive gear 8 at the tip of the output shaft 21 is engaged and held, and the pair of driven gears 5 bearing on the fixed part are engaged and held by the internal teeth 16e, and the internal teeth 16e are engaged and held. , a drive mechanism in which transmission gears 7 that are pivotally attached to the base end of a limit interlocking rotating shaft that is supported by a fixed part are in mesh with each other, and at least one of the driven gears 5 and the transmission gears 7 are engaged with each other. On the support shaft of the toothed wheel, spacer rollers 30 and 38 and a retaining roller 3 are installed so as to sandwich the toothed wheel from the front and back.
2, 40 are pivotally supported, and the spacer rollers 30, 38
Parts of the facing surfaces of the retaining rollers 32 and 40 are in contact with the front and rear surfaces perpendicular to the inner circumferential surface of the internally toothed wheel 16 on which the internal teeth 16e are formed.

(Function) With this structure, in the drive mechanism of the present invention, the transmission toothed wheel (and the driven toothed wheel) are clamped between the spacer rollers and the anti-slip rollers, and their axial and diametric positions are securely maintained, so that the internally toothed wheel rotates in a state where it is correctly aligned with a plane perpendicular to the axis, thereby allowing each part of the drive mechanism to rotate smoothly.

(Example) Hereinafter, the configuration of the present invention will be specifically described based on an example shown in FIGS. 1 to 4.

The built-in opening/closing machine to which the drive mechanism of the embodiment is assembled includes an automatic stop type geared motor 2 installed above an immovable fixed shaft 1, and two upper and lower geared motors fixed to the end face of a motor case 3 of the motor 2. A split support face plate 4, a pair of driven gear wheels 5 supported by bearings 4b on the left and right sides of the lower face plate 4a, and a lower face plate 4a.
a limit mechanism 6 fixed to the bottom of the lower face plate 4a, and a transmission gear 7 supported by a bearing 4c at the bottom of the lower face plate 4a.
, a driving gear 8 (details will be described later), and a half-split internal toothed wheel 16 that fits externally and meshes with the four gears 5, 5, 7, and 8. , a control box 10 installed around the fixed shaft 1 and a wireless receiver 11 for receiving remote command signals are attached.

The automatic stop geared motor 2 includes an electric motor 12 for opening/closing drive, and a brake 13 on the motor shaft.
and generator 1 for detecting the rotational speed of the motor shaft.
4 and a reduction gear 15 of the motor output shaft, and the motor case 3 is formed by a clamp 17
and the clamp bolt 18, the winding shaft 1 is
is fixed.

Next, the support face plate 4 has an upper face plate 4 b and a lower face plate 4 a that are integrally fastened together by left and right reamer bolts 19 , and left and right sides of the upper face plate 4 d are connected to the motor case 4 by fastening bolts 20 . is fixed.

Further, the output shaft 21 of the geared motor 2 is rotatably coupled to a drive gear 8 via a shock absorber 22, and the drive gear 8 is secured to the tip of the output shaft 21 by a snap ring 23. It is prevented from coming off by rollers 24.

Next, the internal toothed wheel 16 has a pair of symmetrical wheel half portions 16a and 16b that are connected to the respective ear bosses 1.
6c and 16d are integrated by a reamer bolt 25 that fastens them together, and a fastening screw 27 that fastens the slat board 26 is provided on one side of the ear boss 16d.
A screw hole 28 is bored therein.

Note that the drive gear 8 meshes with the top of the inner teeth 16e (see FIG. 2) of the inner gear 16, and
The driven tooth wheel 5 and the transmission tooth wheel 7, which are held between the spacer roller 0 and the retaining roller 32 which is secured to the tooth wheel shaft 29 by a snap spring 31, are attached to the left and right sides and bottom of the internal teeth 16e, respectively. The teeth mesh with each other, so that the internally toothed wheel 16 rotates without an axis.

In addition, the above-mentioned retaining rollers 24, 32 and 40
is in contact with the smooth surface 16f on the inner periphery of the internally toothed wheel 16, and prevents the internally toothed wheel 16 from wobbling in the diametrical direction.

Next, the limit mechanism 6 includes a sleeve 34 fixed to the lower face plate with a fastening bolt 33, and a transmission gear 7.
It is formed by an interlocking rotating shaft 35 that is locked with a key, a threaded shaft 36 that is integrally connected to the rotating shaft 35, and an internally threaded cylinder 37 that fits externally and meshes with the threaded shaft 36. , the transmission gear 7 has a spacer roller 38 between it and the bearing 4c, and a retaining roller 40 that is locked to the interlocking rotating shaft 35 by a snap spring 39.
Although not shown, the inner threaded cylinder 37 is prevented from rotating by the sleeve 34.

Here, the operation of the built-in switch constructed as described above will be explained.

First, the drawing shows the state when the shutter door is opened. In this state, when the transmitter for the open/close command signal for wireless operation of the shutter is operated to command the door to close, the receiver 1
A command signal from 1 is input to the control box 10 to start the electric motor 12 in the door closing direction.

This startup causes the motor output shaft 21 and the drive gear 8 to
rotates in the door closing direction to drive the internally toothed wheel 16, thereby rotating the slat base plate 26 assembled to the wheel 16 in the feeding direction, and the slat begins to descend.

During levering, however, the transmission gear 7 is driven as the built-in wheel 16 rotates, causing the interlocking rotating shaft 35 and the screw shaft 36 to rotate, and as a result, the internal threaded cylinder 37 moves into the sleeve 34 .

Finally, when the lower end of the slat reaches the floor surface, the inner end of the internal threaded tube 37 hits the back end of the sleeve 34, so the electric motor 12 becomes unloaded and automatically stops. .

On the other hand, when the door opening command is operated, the slat rises in the same manner, and as a result, the internal threaded cylinder 37 slides in the direction of protruding from the sleeve 34.
Finally, when the drainage part of the slat hits the magnifying part of the shutter case, the motor 12 becomes overloaded, and the electric motor 12 automatically stops.

During such opening/closing operations, in the opening/closing drive mechanism of the embodiment, the transmission gear 7 and the driven gear 5 are held between the spacer rollers 30, 38 and the retaining rollers 32, 40, and rotate in the axial direction. Since the inner toothed wheel 16 does not run out and move in the diametrical direction, there is no risk of the inner toothed wheel 16 causing surface runout. Because they are assembled into one unit at the same time, there is no shaking or internal stress in each rotating part, and the opening and closing operations are performed smoothly and reliably.

(Effect of the invention) As described above, according to the drive mechanism of the electric shutter according to the invention, the driven tooth wheel and the transmission tooth wheel, which act to maintain the rotational axis of the internal toothed wheel, are connected to the spacer roller and the retainer roller. Since it is sandwiched between the rollers and configured to prevent vibration in the axial and diametrical directions, each part of the drive mechanism can operate smoothly, which has the effect of increasing the reliability of the shutter opening and closing operation. be.

[Brief explanation of drawings]

FIG. 1 is a front view of a drive mechanism of an electric shutter showing an embodiment of the present invention, FIG. 2 is a side sectional view taken along the - line in FIG. 11, and FIG. 3 is a main part of FIG. The sectional view, FIG. 4, is a front sectional view taken along the - line in FIG. 2. 1... Fixed shaft, 4... Support face plate as a fixed part, 4b, 4c... Bearing, 7... Transmission tooth wheel,
8... Drive gear wheel, 12... Electric motor, 16...
Internal gear wheel, 16e... Internal gear, 21... Output shaft, 30, 38... Spacer roller, 32, 40...
...Retaining roller.

Claims (1)

[Claims for Utility Model Registration] Internal teeth 16e of an internal toothed wheel 16 for attaching a slat that rotates around the axis of the fixed shaft 1.
, an electric motor 12 installed on the fixed shaft 1
The driving gear wheel 8 at the tip of the output shaft 21 is engaged and held, and the pair of driven gear wheels 5 bearing the fixed part are engaged and held by the internal teeth 16e, and the internal teeth 16e are engaged with and held. , a drive mechanism in which transmission gears 7 that are pivotally attached to the base end of a limit interlocking rotating shaft that is supported by a fixed part are in mesh with each other, and at least one of the driven gears 5 and the transmission gears 7 are engaged with each other. On the support shaft of the toothed wheel, spacer rollers 30 and 38 and a retaining roller 3 are installed so as to sandwich the toothed wheel from the front and back.
2, 40 are pivotally supported, and the spacer rollers 30, 38
A portion of the facing surfaces of the retaining rollers 32 and 40 are in contact with the front and rear surfaces perpendicular to the inner circumferential surface of the internal toothed wheel 16 on which the internal teeth 16e are formed. Drive mechanism.