JPH048236Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to an opening/closing shaft tensioning device for a blind or curtain.

(Prior art) Generally, for example, in a vertical electric blind, the opening/closing shaft and the rotating shaft of the slat are horizontally mounted in parallel in the box frame, and the opening/closing is performed by a drive motor provided in the box frame. By rotating the shaft, a plurality of runners are made to run in conjunction with each other, and by rotating the rotation shaft, the slats suspended by each runner are rotated. In order to keep the distance between the opening/closing shaft and the rotating shaft constant and the distance between these two shafts and the box frame body to prevent swinging of the opening/closing shaft, the two shafts are provided with a reciprocating motion due to the rotation of the opening/closing shaft. The support is mounted as shown.

(Problem to be solved by the invention) In the above conventional technology, multiple supports move back and forth as the opening/closing shaft rotates to prevent the swinging of the opening/closing shaft. This has led to the problem that the load applied to the runners increases, and some supports cannot prevent the opening/closing shaft from swinging.

Therefore, when installing the opening/closing shaft horizontally on the box frame, apply a tensile force to the opening/closing shaft using an appropriate tensioning device, keep the opening/closing shaft in a state in which the tension is applied, and then remove the tensioning device. It is conceivable to connect a drive motor to the opening/closing shaft via gears, belts, pulleys, etc. so that it can withstand the load applied to the runner due to the tensile force applied to the opening/closing shaft.

However, in this case, after the drive motor is connected to the opening/closing shaft to which tensile force is applied via a gear, belt, pulley, etc., it is not possible to adjust the magnitude of the tensile force applied to the opening/closing shaft. For,
It is not possible to introduce a tensile force that is suitable for various products, and it is expected to cause problems such as requiring the complicated work of attaching and detaching the tensioning device. In particular, the amount of tension applied to the opening/closing shaft is, for example, as shown in Fig. 8, when the opening/closing shaft with length l = 5500.00 mm is deflected by l ₁ = 10 mm, l ₂
= 2750.02mm, and based on the following formula 2750.02×2=5500.04, a tensile amount of 0.04mm or more is required, and 1/
There is a problem in that fine adjustment of the tensile force is difficult because there are individual variations in dimensions in units of 100 mm.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an opening/closing shaft tensioning device for a blind or the like, which can easily adjust the tensile force applied to the opening/closing shaft to an appropriate state.

[Structure of the invention] (Means for solving the problem) The present invention connects a tension screw shaft to at least one end of the opening/closing shaft, inserts the tension screw shaft into the side plate via a bearing, and connects the tension screw shaft to at least one end of the opening and closing shaft. It is configured to apply a tensile force to the opening/closing shaft by tightening a nut on the insertion end.

(Function) The present invention can apply tension to the opening/closing shaft by tightening a nut on the tension screw shaft when the drive motor and the opening/closing shaft are connected by a rotational force transmitting member, and the tightening degree of the nut can be adjusted. The tension force of the opening/closing shaft can be adjusted by.

(Example) Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

Figures 1 to 6 show the first embodiment, which is a single-clamp type, and in the figures, 1 is a box frame made of aluminum alloy, etc., and is fixed to a wall etc. by a mounting bracket (not shown). . 2 is a pair of guide rails formed oppositely within the box frame 1;
Rollers 4, which are pivotally supported at both ends of the runner 3, are fitted in a movable manner. A worm shaft 5 is vertically rotatably fitted in the center of the runner 3, and an opening/closing shaft 6 and a rotating shaft 7 are inserted through the left and right sides of the worm shaft 5. A leading runner (not shown) runs, and the leading runner sequentially pulls and runs the following runners 3 through spacers 3A, and the rotation of the rotating shaft 7 causes the worm shaft 5 to rotate through the worm gear 8 provided on the runner 3. A slat 10 suspended from the lower end of the worm shaft 5 via a hook 9 is configured to open and close at any angle.

At one end of the opening/closing shaft 6 and the rotation shaft 7, there is a receiving portion 12 formed at one end of the tension screw shaft 11, 11, respectively.
12 fitting holes 13, 13 are fitted together, and they are fixed by screws 14, 14 to integrally connect the opening/closing shaft 6 and the tension screw shaft 11, and the rotation shaft 7 and the tension screw shaft 11, respectively. has been done. Note that the receiving portions 12, 12 may be biased toward the shafts 6, 7 by a spring (not shown).

An inner plate 15A and an outer plate 15B are provided on one end side of the box frame body 1.
A gear storage side plate 15 having
The other end of 11 is inserted into the gear storage side plate 15. Further, gear mounting portions 16, 16 having a rectangular cross section are formed in the tension screw shafts 11, 11 inserted into the gear storage side plate 15, and gears 17, 17 are formed in the gear mounting portions 16, 16. The rectangular holes 18, 18 are fitted so that the gears 17, 17 and the tension screw shafts 11, 11 can mutually slide in the axial direction and engage in the circumferential direction. Further, cylindrical flanges 19, 19 are formed protrudingly on both side surfaces of the gears 17, 17, respectively, and one of the flanges 19, 19 is inserted into a circular hole 20 formed in the inner plate 15A of the gear storage side plate 15. The other end is fitted into a circular hole 20 formed in the outer plate 15B and is pivotally supported.

Bearing plates 22, 22 and bearings 2 are attached to the screw portions 21, 21 at the ends of the tension screw shaft 11 inserted from the outer plate 15B.
Tension nuts 24, 24 are screwed through 3, 23. 25 is a cover for the bearings 23, 23 and the nuts 24, 24.

The other ends of the opening/closing shaft 6 and the rotation shaft 7 are respectively inserted into a side plate 26 fixed to the other end side of the box frame 1 by screws (not shown), and a bearing plate 27 and a bearing 28 are provided at the insertion ends thereof. Shaft stoppers 29, 29 are fixed via screws 30, 30 via 28. 31 is a cover.

An opening/closing shaft drive motor 32 is provided in the upper part of the box frame 1, and a screw shaft 33 connected to this drive shaft (not shown) is connected to a gear 3 through a rotation control device 34.
5 and the gear 36, and the rotational force of the drive motor 32 is connected to the screw shaft 33 and the gear 36.
5, 36, and 17 to transmit the signal to the opening/closing shaft 6. Although not shown in the drawings, the rotational force of the rotation shaft drive motor is also transmitted to the rotation shaft 7 by the same structure as described above.

After completing the assembling work of the blind configured as described above, the tension nuts 24, 2 are
4, the other ends of the opening/closing shaft 6 and rotating shaft 7 are held by the shaft stoppers 29, 29, so a tensile force is applied to the opening/closing shaft 6 and rotating shaft 7 via the tension screw shafts 11, 11. be introduced. Further, delicate adjustment of the tensile force can be made by adjusting the tightness of the nuts 24, 24, so that an appropriate tensile force can be applied.

As described above, in the above-mentioned embodiment, it is not necessary to attach or detach the tensioning device, and the tensioning means can be easily assembled, and the tensioning force can be adjusted after assembly. Furthermore, the tension can be finely adjusted by simply adjusting the tightness of the tension nut 24. Further, since a tensile force can be introduced by tightening the tension nut 24, it is possible to use the opening/closing shaft 6 and the rotating shaft 7 which are slightly bent. Also, the tension nut 24
Even if a tensile force of 2 is applied to the tension screw shaft 11, the gear 17 and the mounting portion 16 are in a mutually loose state in the axial direction, so the gear 17 does not move and there is no problem in transmitting the driving force. Furthermore, by introducing a tensile force into the opening/closing shaft 6, swinging of the opening/closing shaft 6 is prevented and a slat load of about 70 kg can be withstood.

FIG. 7 shows a second embodiment in which both clamping dies are used. The same parts as those in the above embodiment are given the same reference numerals and explanations are omitted. One end side of the opening/closing shaft 6 and the rotation shaft 7 The structure of is the same as that of the above embodiment, so a description thereof will be omitted. The other end sides of the opening/closing shaft 6 and the rotation shaft 7 are each a tension screw shaft 11A without a gear attachment part.
The opening/closing shaft 6, the tension screw shaft 11A, and the rotation shaft 7 are fitted into the fitting holes 13, 13 of the receiving portions 12, 12 of 11A, and are fixed by screws 14, 14.
and the tension screw shaft 11A are each integrally connected. And the screw portion 2 of the tension screw shaft 11A, 11A
1 and 21 are inserted through side plates 26 and 26, and tension nuts 24A and 24A are screwed to the insertion ends thereof via bearing plates 27 and bearings 28 and 28, respectively.

After completing the assembly work of the blind configured as described above, the opening/closing shaft 6 and the rotation shaft 7 are assembled.
Tension nuts 24, 24A provided at both ends of
When tightened, tensile force is introduced into the opening/closing shaft 6 and the rotating shaft 7 from both ends via the tension screw shafts 11 and 11A. Also, delicate adjustments to the tensile force can be made using nuts 24,2.
This is possible due to the tightness of 4A, and an appropriate tensile force can be obtained.

Note that the present invention is not limited to the above-mentioned embodiments, and various modifications can be made within the scope of the gist of the present invention. For example, the connection structure between the tension screw shaft and the opening/closing shaft and the mounting structure between the tension screw shaft and the gear may be appropriately selected within the scope of the gist, and the tension means may be provided at least on the opening/closing shaft side; The structure related to the gear and the tension screw shaft may be provided at either end of the opening/closing shaft. It may also be provided with support. Further, drive motors may be connected to both ends of the opening/closing shaft and the rotation shaft, respectively. Furthermore, although the embodiment has been explained using blinds, it goes without saying that it can also be applied to curtains.

[Effect of the invention] The present invention connects a tension screw shaft to at least one end of the opening/closing shaft, inserts the tension screw shaft into the side plate via a bearing, and tightens a nut on the insertion end of the tension screw shaft to open and close the opening/closing shaft. Since it is configured to apply a tensile force to the shaft, it is possible to provide an opening/closing shaft tension device such as a blind that can easily adjust the tensile force applied to the opening/closing shaft to an appropriate state.

[Brief explanation of drawings]

Figures 1 to 6 show the first embodiment. Figure 1 is a partially cutaway plan view, Figure 2 is an exploded perspective view of the opening/closing shaft, tension screw shaft, gear, bearing, and nut, and Figure 3 is an exploded perspective view of the opening/closing shaft, tension screw shaft, gear, bearing, and nut. A cross-sectional view taken along line A-A in Figure 1, and Figure 4 is a cross-sectional view taken along line B-B in Figure 1.
5 is a sectional view showing the rotational force transmitting means, FIG. 6 is a longitudinal sectional view of the blind, FIG. 7 is a partially cutaway plan view showing the second embodiment, and FIG. 8 is a schematic explanatory drawing. It is. 1... Box frame body, 2... Guide rail, 3... Liner, 6... Opening/closing shaft, 11, 11A... Tension screw shaft, 15... Side plate, 17... Gear, 23... Bearing, 24, 24A...nut, 26...side plate, 2
8...Bearing.

Claims (1)

[Scope of utility model registration request] An opening/closing shaft is horizontally suspended within the box frame, and a plurality of runners are formed to run along guide rails provided on the box frame by rotation of the opening/closing shaft, and a tensioner is attached to at least one end of the opening/closing shaft. It is configured by connecting screw shafts and inserting the tension screw shaft through a side plate provided on the box frame via a bearing, and by tightening a nut on the insertion end of the tension screw shaft, a tensile force is applied to the opening/closing shaft. An opening/closing shaft tensioning device for blinds, etc., characterized in that it gives the following.