JP3250191B2 - Lift-up curtain lifting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an elevating device having a deceleration mechanism for a lift-up curtain.

[0002]

2. Description of the Related Art A screen lifting and lowering device of this type includes a cord pulley on which an operation code is applied, a planetary gear mechanism, and a brake mechanism interposed between the planetary gear mechanism and a rotating shaft of the take-up pulley or the code pulley. As disclosed in Japanese Utility Model Publication No. Hei 3-5679, a cord pulley, a planetary gear mechanism, and a brake mechanism are loosely fitted to the rotation shaft of a take-up pulley and housed in a common case.

[0003]

In the conventional apparatus, a cord pulley or the like is loosely fitted on a rotating shaft of a take-up pulley. Therefore, when the operation cord is cut, the cord pulley is rotated from the outside of the case to form a new operation cord. Can not be multiplied. However, since it is not always easy to remove the case, there has been a demand for a device capable of hanging a new operation code on the code pulley without removing the case.

[0004] The present invention is to meet this demand, and it is an object of the present invention to provide an elevating device capable of hanging an operation code on a cord pulley without removing a case.

[0005]

In order to achieve the above object, the present invention employs a means in which an output shaft of a brake mechanism is connected to a rotating shaft of a take-up pulley, and a planetary gear mechanism is connected to an input shaft of the brake mechanism. Are connected to the input shaft of the planetary gear mechanism so that the operation cord pulley is integrally rotated, and the input shaft is exposed from a common case.

[0006]

The input shaft of the planetary gear mechanism that rotates integrally with the cord pulley is exposed from the case, so that the input shaft can be easily rotated manually from outside the case. Therefore, the operation code can be wrapped around the code pulley by inserting the operation code from the operation code doorway of the case, hooking the code on the code pulley, and manually turning the input shaft of the planetary gear mechanism.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a curtain according to the present invention. As shown in FIGS. 1 and 2,
The raising / lowering device 10 of the lift-up curtain is fixed to the lower surface of one end of the head rail 11. A take-up pulley 14 is mounted on a brake output shaft 13 of a brake mechanism protruding from a case 12 of the lifting device 10.
Is connected to the rotating shaft 15 for rotating. The leading end of the winding tape 30 wound on the winding pulley 14 is fixed to the lower end of the screen 16 having the upper end fixed to the head rail 11 together with the weight.
The input shaft gear 18 of the planetary gear mechanism is exposed on the outer end surface of the case 12, and the input shaft gear 18 has a cross hole for a driver on the end surface.
19 will be provided. The operation code 17 hangs down from the lower surface of the case 12.

As shown in FIG. 3, the case 12 has an outer end 12a.
, An intermediate portion 12b, and an inner end portion 12c.
Bears the outer end of the input shaft gear 18 having the cross hole 19. The intermediate portion 12b connects the output shaft 23 of the planetary gear mechanism to the inner end portion 12b.
a bears the output shaft of the brake mechanism. The code pulley 20 is externally fitted to the input shaft gear 18 of the planetary gear mechanism so as to rotate integrally with the input shaft gear 18 in the relation of a square axis, and the input shaft gear cap 21 is fitted from the outside thereof to determine the axial position. Input shaft gear 18
And an output shaft 23 of a planetary gear mechanism that supports each planetary gear shaft is connected to a brake input shaft 24.
A brake spring 25 is externally fitted to the brake input shaft 24, and the brake spring 25 is internally fitted to a brake drum 26 fixed to the case 12. The semi-lunar part of the brake output shaft 13 is the brake input shaft
Combine with 24 crescents and connect the rotating shaft 15 to the opposite side.

As shown in FIG. 4, a shape is formed along the outer periphery of the cord pulley 20 inside the outer end portion 12a of the case, and a guide roll 28 is attached to the entrance 27 of the operation cord. When the operation code 17 is pulled, the input shaft gear 18 rotates. The rotation is reduced by the planetary gear mechanism and transmitted to the brake input shaft 24. The rotation of the brake input shaft 24 is always the brake spring 25
Since the brake is not applied, the rotation is transmitted as it is to the rotating shaft 15 via the brake output shaft 27 and rotates the winding pulley 14 in FIG. 2, so that the screen 16 in FIG. 1 moves up and down. When the screen 16 tries to descend by its own weight,
Since the brake spring 25 is always loosened and adheres to the brake drum 26, a brake is applied to prevent the screen 16 from falling under its own weight.

When the operation code is cut off or the operation code is replaced, one end of a new operation code is inserted from the entrance 27 of the case 12 shown in FIG. 5 and the input shaft gear 18 is rotated by the cross driver. The operation code 17 can be easily wound around the code pulley 20 by the use of the code 28.

[0011]

As described above, the apparatus of the present invention is different from the conventional apparatus in which the operation cord cannot be applied to the cord pulley without removing the case, and the input shaft gear exposed on the end face of the case is manually operated. Since the operation code can be hung on the code pulley only by inserting one end of the operation code into the entrance of the operation code while rotating the operation code, there is an excellent effect that replacement of the operation code becomes extremely easy.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a tuck-up curtain provided with an apparatus according to an embodiment of the present invention;

FIG. 2 is a front view of a main part of the curtain shown in FIG. 1 with a screen omitted;

FIG. 3 is a longitudinal sectional view of the apparatus of FIG. 1,

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;

[Explanation of symbols]

10: Lifting device, 11: Head rail, 12: Case, 13: Brake output shaft, 14: Winding pulley, 15: Rotating shaft, 16: Screen, 17: Operation code, 18: Input shaft gear, 19: Cross hole , 20: Cord pulley, 21: Input gear cap, 22: Planet gear, 23: Output shaft, 24: Brake input shaft, 25: Brake spring, 26: Brake drum, 27: Doorway, 28: Guide roll

Claims (2)

(57) [Claims] 1. A cord pulley (20) on which an operation cord (17) is hung, a planetary gear mechanism (18, 22, 23) for transmitting the rotation of the cord pulley at a reduced speed, and a winding pulley for a lift-up curtain. A brake mechanism (1) that transmits the rotation of the cord pulley to the rotation shaft (15) of (14) but not the reverse
3, 24, 25, 26) in a case (12), wherein the brake input shaft (24) of the brake mechanism is connected to the output shaft (23) of the planetary gear mechanism, and the brake output shaft is connected to the brake output shaft. The cord pulley (20) is externally fitted to the input shaft gear (18) of the planetary gear mechanism so as to rotate integrally, and one end of the input shaft gear (18) is connected to the case. A lift-up / down device for a lift-up curtain, which is exposed so as to be manually rotatable from (11). 2. An input shaft gear (1) exposed from a case (11).
2. The lifting device according to claim 1, wherein a cross hole (19) is formed in the end face of (8).