JPH0422719Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention relates to a locking device that prevents the bottom rail of a blind from swinging due to wind or the like.

(Prior Art) Conventionally, blinds have multiple slats supported by a ladder cord suspended from a head box, and a bottom rail suspended from the lower end of the ladder cord.

(Problem to be solved by the invention) The above-mentioned blinds may cause the bottom rail or slats to collide with the window glass etc. due to swinging due to wind from outside the window, causing noise. Window glass was sometimes damaged. Therefore, a locking device that uses magnets to fix the bottom rail to the window frame has been proposed in order to prevent the blind from swinging due to wind, etc. However, when the bottom rail is fixed to the window frame, the angle of the slats can be adjusted. There was a problem in that it was interfering with the The object of this invention is to provide a bottom rail locking device which solves the above problems and prevents the swinging of the blind and does not interfere with the angle adjustment of the slats.

Structure of the invention (means for solving the problem) In order to solve the above problem, this invention installs a magnet 12 on either the bottom surface of the bottom rail 5 or the bottom rail hanging position of the window frame 9. At the same time, a suction plate 18 is provided on the other side to attract the magnet 12, and the magnet 12 or the suction plate 18 is rotatably supported with respect to the window frame 9 via guide means 17, 20, and the guide means 17, 20 is the guide means 17;
The magnet 12 or attraction plate 18 supported by 20
The magnet 12 attached to the bottom rail 5
Alternatively, a configuration is adopted in which the suction plate 18 and the suction plate 18 are rotatably supported as the bottom rail 5 rotates.

(Function) When the magnet 12 is attracted to the attraction plate 18 by the above means, the bottom rail 5 is rotatably supported by the window frame 9.

(Embodiment) Hereinafter, an embodiment embodying this invention will be described with reference to the drawings. As shown in FIG.
Three ladder cords 3 are suspended from the ladder cords 3, and a plurality of slats 4 are suspended from the ladder cords 3, and a bottom rail 5 is suspended from the lower end of the ladder cords 3. The upper end of the ladder cord 3 is supported by a slat drive shaft (not shown) within the head box 2, and each slat 4 can be operated simultaneously via the ladder cord 3 by operating an operating cord 6 hanging from one side of the head box 2. The angle can be adjusted using the phase.

A lifting cord 7 passes through each slat 4 near the supporting portion of the ladder cord 3, and the lower end of the lifting cord 7 is connected to the bottom rail 5, and the upper end is supported by the slat drive shaft. Then, by operating the operation code 6, the slat drive shaft is rotated to wind up or unwind the lifting cord 7, and the bottom rail 5 is rotated.
Each slat 4 can be raised and lowered as the slats 4 are raised and lowered.

Both ends of the bottom rail 5 are supported by a locking device 8 on the lower frame 9 of the window. The bottom rail 5
The detailed structure of the locking device 8 will be explained below.
As shown in FIG. 1, the bottom rail 5 has a groove 10 formed in the center of its lower surface, and a magnet case 11 is fitted into the groove 10 at one end of the bottom rail 5. A magnet 12 is fitted and fixed.

As shown in FIG. 3, the case 13 of the locking device 8 fixed to the lower frame 9 of the window has side plates 15 protruding upward from both left and right sides of the base 14, and as shown in FIG. There is a semicircular recess 16 in the center of the
is formed. Furthermore, a long hole 17 is formed below the recess 16 of the side plate 15 along the curved surface of the recess 16.

A suction plate 18 made of a magnetic material such as a steel plate is disposed between the side plates 15 of the case 13. Side pieces 19 are fixed to both ends of the suction plate 18, and an engagement shaft 20 protruding into the elongated hole 17 is formed at the lower part of the side piece 19. The suction plate 18 is supported so as to be movable along the curved surface of the recess 16 relative to the case 13 within the range in which the engagement shaft 20 is guided by the elongated hole 17 and moves.

Next, the operation of the locking device 8 configured as described above will be explained.

Now, the blind 1 can raise and lower each slat 4 by operating the operating cord 6 and raising and lowering the bottom rail 5. When the bottom rail 5 is lowered to its lowest limit, the lower surface of the bottom rail 5 is attracted to the attraction plate 18 by magnetic force, as shown in FIG. In this state, when the operating cord 6 is further operated to adjust the angle of the slat 4, the bottom rail 5 rotates together with the suction plate 18, as shown in FIG.
is moved along the long hole 17. In addition, when pulling up the slats 4, if the bottom rail 5 is pulled up using the operation cord 6, the bottom rail 5 separates from the adsorption plate 18 and is pushed upward sequentially starting from the lower slats 4.

Therefore, in this blind 1, when the bottom rail 5 is lowered to the lowest limit, the bottom rail 5
is attracted to the suction plate 18, and the locking device 8
Since it is supported by the lower frame 9 of the window through the bottom rail 5, rocking of the bottom rail 5 due to wind from outside the window is prevented. When adjusting the angle of the slat 4, the bottom rail 5 is also rotated in synchronization with the slat 4. Since the suction plate 18 is movable along the elongated hole 17, the suction plate 18 is rotated when adjusting the angle of the slat 4. By rotating the slat 4 integrally with the bottom rail 5, the angle of the slat 4 can be adjusted without any trouble.

In the above embodiment, the magnet 12 is attached to the bottom rail 5 and the attraction plate 18 is rotatably supported on the bottom frame 9. However, the attraction plate 18 is attached to the bottom rail 5, and the magnet 12 may be rotatably supported. Further, an adsorption plate or a magnet may be rotatably supported not only on the lower frame 9 but also at any position on the window frame.

Effects of the Invention As detailed above, this invention exhibits an excellent effect of being able to adjust the angle of the slats 4 without any trouble while preventing the blind 1 from swinging due to wind or the like.

[Brief explanation of the drawing]

Figure 1 is a front view of a bottom rail locking device that embodies this invention, Figure 2 is a front view showing the bottom rail in a rotated state, and Figure 3 is a longitudinal sectional view of the bottom rail locking device. FIG. 4 is a front view of a blind related to this invention. Blind...1, Bottom rail...5, Locking device...8, Lower frame...9, Magnet...12, Long hole...
...17, Suction plate...18, Engagement shaft...20.

Claims (1)

[Claims for Utility Model Registration] 1. A magnet 12 is attached to either the lower surface of the bottom rail 5 or the bottom rail hanging position of the window frame 9, and a suction plate 18 that attracts the magnet 12 is provided on the other side. , the magnet 12 or the adsorption plate 1
8 is rotatably supported on the window frame 9 via guide means 17, 20, and the guide means 17, 20 support the magnet 1 supported by the guide means 17, 20.
2 or the bottom rail locking of a blind, characterized in that a suction plate 18 is rotatably supported together with the magnet 12 or the suction plate 18 attached to the bottom rail 5 as the bottom rail 5 rotates. Device. 2 The guiding means includes an engaging shaft 20 provided on both sides of the suction plate 18 and a long hole 17 that guides the engaging shaft 20.
A bottom rail locking device for a blind according to claim 1, which is a case 13 comprising: