JPH0737033Y2 - Blinds for tilting windows - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide wire tensioning device for a blind for a tilted window.

[0002]

2. Description of the Related Art Generally, a blind for an inclined window has a guide wire inserted through a slat and a bottom rail, and upper and lower end portions of the guide wire are attached to a head box and a window lower frame, respectively. In the above, a tensioning tool having a tension adjusting mechanism is provided so that the guide wire is in a tensioned state so that the blind does not hang down by its own weight.

Conventionally, as a tensioning device of this type, for example, in Japanese Utility Model Publication No. 62-3519, a guide wire winding shaft is rotatably supported by a head box, and an end portion of the winding shaft protruding outside the head box is used. The worm wheel is fixed, the worm that meshes with the worm wheel is rotatably supported outside the head box, and by rotating the worm, the winding shaft is rotated via the worm wheel and the guide wire is tensioned. What has been done is disclosed.

[0004]

However, in such a conventional tightening tool, since the winding shaft is rotated by the engagement between the worm wheel and the worm, a large number of worms must be rotated to prevent the worm wheel and the worm from being reversed. For example, the winding shaft has a structure in which it cannot rotate, and there is a problem that it takes time to tension or loosen the guide wire. Moreover, since the guide wire is tensioned by indirectly rotating the winding shaft by rotating the worm, it is difficult to convey the tension of the guide wire to the driver or the like who rotates the worm. There is a problem that it is easily damaged.

An object of the present invention is to provide a guide wire tensioning device for a blind for a tilted window that solves the above conventional problems.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention tensions the guide wire by directly rotating the winding shaft of the guide wire, and prevents the winding shaft from rotating in the tensioned state. In order to achieve this, a brake gear that meshes with the gear at the end of the winding shaft is provided movably at a specific position.

That is, the guide wire tensioning device for a blind for a tilted window according to the present invention comprises:
A tensioning tool for fixing the upper end portion to a head box and supporting the lower end portion of a guide wire inserted through a slat and a bottom rail, in which a winding shaft is installed in a box-shaped base body attached to a window lower frame. Is rotatably supported so as to face the outside of the base body, and the lower end of the guide wire is wound around the winding shaft through the insertion hole on the top surface of the base body so that it can be tensioned, and at one end of the winding shaft inside the base body. A gear is provided, and a brake gear meshing with the gear is loosely fitted in a position regulated by a regulating member provided in the base body so as to be vertically movable, the brake gear meshes with the gear by its own weight, and the lower end is a regulating member. To be non-rotatable by engaging with, and a cutout corresponding to the lower end portion of the brake gear is provided on the side surface of the base body, and the brake gear can be moved and operated through the cutout in the direction in which the brake gear is disengaged from the restricting member. Is

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. In FIG. 1, 1 is a well-known blind attached to an inclined window, 2 is a head box attached to a window upper frame 6, 3 is a slat, 4 is a bottom rail, and 5 is a guide wire. The guide wire 5 has an upper end fixed to the head box 2 and a lower end supported by the tensioning device A of the present invention attached to the window lower frame 7.

The tensioning device A of the present invention is for tensioning the guide wire 5 to prevent the blind 1 from hanging down by its own weight. The tensioning tool A is generally a box-shaped base body 8 attached to the window lower frame 7, a winding shaft 9 rotatably supported in the base body 8 to wind the guide wire 5, and a loose fit at a specific position in the base body 8. And a brake gear 10 that blocks the rotation of the winding shaft 9.

The box-shaped base body 8 is in the shape of a rectangular box with an open bottom, and contains a winding shaft 9 and a brake gear 10. As shown in FIG. 2, a mounting piece 11 is projectingly provided on the bottom opening edge of the base body 8 so that it can be mounted on the window lower frame 7.
An insertion hole 12 is formed in the upper surface of the base body 8 so that the lower end portion of the guide wire 5 can be wound around the winding shaft 9 through the insertion hole 12. Further, in relation to the existing position of the brake gear 10, the regulating member 15 is provided inside the base body 8 as described later.
However, notches 16 are provided on the side surface of the base body 8, respectively.

The winding shaft 9 is rotatably supported in the base body 8 as shown in FIG. 3, and the rotation operation part 13 at one end is exposed to the outside of the base body 8. The rotation operation part 13 is externally driven by a driver or the like. It can be rotated directly through. A gear 14 is provided at one end of the winding shaft 9 and at a position adjacent to the rotation operation unit 13. The gear 14 is generally provided by knurling the outer circumference of the winding shaft 9.
The other end of the winding shaft 9 corresponding to the insertion hole 12 of the base body 8 is for winding the guide wire 5, and an end fixing hole 17 for the guide wire 5 is formed as shown in FIG. ing.

The brake gear 10 is a gear that meshes with the gear 14 and is loosely fitted in a position regulated by a regulating member 15 provided in the base body 8 so as to be vertically movable, as shown in FIGS. . The brake gear 10 meshes with the gear 14 by its own weight, and the lower end portion of the brake gear 10 is engaged with the regulating member 15 so that the brake gear 10 cannot rotate and the rotation of the winding shaft 9 is prevented. Is disengaged and winding shaft 9
Is regulated to be rotatable.

The regulating member 15 is generally an L-shaped plate piece as shown in FIG. 4, and is provided integrally with the base body 8 in advance.
Alternatively, it is separately manufactured and then integrated in the substrate 8. As shown in FIGS. 3 and 4, the restricting member 15 sandwiches the brake gear 10 between the restricting member 1 and the side surface of the base body 8 to restrict the movement in the axial direction.
5a and a restricting portion 15b that supports the lower end of the brake gear 10 and engages with the teeth so that the brake gear 10 does not fall from the position where it meshes with the gear 14. That is, the restricting portions 15a and 15b of the restricting member 15 and the base 8
And the gear 14 holds the brake gear 10 in the base body 8.

The brake gear 10 meshes with the gear 14 by its own weight and is engaged with the restricting portion 15b. In order to disengage the engagement, the brake gear 10 is moved upward. Notch corresponding to 1
6 is provided. As shown in FIGS. 2 and 3B, the notch 16 is cut upward from the lower end of the side surface of the base body 8 by a predetermined length so that the tip of a driver or the like can be inserted.

When the guide wire 5 is to be tensioned by the tensioning device A of the present invention, the tip of a driver or the like is inserted into the notch 16 to move the brake gear 10 upward, and the rotary operation portion 13 of the winding shaft 9 is driven by the driver or the like. The winding shaft 9 is directly rotated by being rotated. After an appropriate tension is applied to the guide wire 5, if the driver or the like inserted in the notch 16 is removed, the brake gear 10 falls by its own weight and meshes with the gear 14 as shown in FIG. The rotation of the take-up shaft 9 is prevented by being engaged with the restriction portion 15b.

When the tension of the guide wire 5 is released, the brake gear 10 is moved upward through the notch 16 as shown in FIG. 5, and then the tension of the guide wire 5 is released, and the brake gear 10 is released again. Gear 14 by its own weight
It should just mesh with.

[0017]

As described above in detail, in the tensioning device of the present invention, the winding shaft is rotatably supported in the box-shaped base with its rotation operating portion facing the outside of the base, and the lower end of the guide wire is wound. Since it is wound around the take-up shaft so that it can be tensioned, the take-up shaft can be directly rotated by a screwdriver or the like via the rotating operation section, and the take-up operation of the take-up shaft does not take time, and the guide wire It can be rotated while adjusting the tension, and the guide wire will not be damaged by over tightening.

Further, a brake gear that meshes with the gear of the winding shaft is loosely fitted in the base body, the brake gear meshes with the gear due to its own weight, and the lower end portion is engaged with the regulating member so that it cannot rotate. Since the brake gear can be moved and operated in the direction in which it is disengaged from the regulating member through the notch, the reverse rotation of the winding shaft can be easily prevented and the winding shaft for loosening the tension of the guide wire. The brake can be released easily.

[Brief description of drawings]

FIG. 1 is a side view showing an example of a blind for a tilted window using a tensioning device according to the present invention.

FIG. 2 is a perspective view showing an embodiment of the tensioning device of the present invention.

3A and 3B show an embodiment of the tensioning device of the present invention, wherein (A) is a partially cutaway plan view and (B) is a partially cutaway front view.

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

FIG. 5 is a front view of the tensioning device of the present invention when the guide wire is loosened.

[Explanation of symbols]

 A Tension tool 1 Blind 2 Head box 3 Slat 4 Bottom rail 5 Guide wire 8 Box-shaped base body 9 Winding shaft 10 Brake gear 12 Insertion hole 13 Rotating operation part 14 Gear wheel 15 Restricting member 16 Notch

Claims (1)

[Scope of utility model registration request] 1. A tilting window blind, which is a tensioning tool for fixing an upper end portion to a head box 2 to support a lower end portion of a guide wire 5 inserted through a slat 3 and a bottom rail 4, and a window lower frame 7 The winding shaft 9 is rotatably supported in the box-shaped base body 8 mounted on the base body 8 with the rotation operating portion 13 facing the outside of the base body 8, and the lower end of the guide wire 5 is the base body 8.
The take-up shaft 9 is wound around the take-up shaft 9 through the insertion hole 12 on the upper surface so that the take-up shaft 9 can be tensioned.
The brake gear 10 meshing with the gear 14 is loosely fitted in a position regulated by a regulating member 15 provided in the base body 8 so that the brake gear 10 meshes with the gear 14 by its own weight. The lower end is engaged with the regulating member 15 so that it cannot rotate, and a notch 16 corresponding to the lower end of the brake gear 10 is provided on the side surface of the base body 8.
A guide wire tightening tool for a blind for a tilted window, which is operable to move the brake gear 10 in a direction in which the brake gear 10 is disengaged from the restricting member 15 via.