JPS6224715Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field This invention relates to a pulley mounting structure for hanging an angle adjustment string for adjusting the angle of the slats of a vertical blind.

Conventional technology Conventionally, in vertical blinds in which the angle of the slats is adjusted by rotating a rotating shaft in a guide rail attached to a window frame, etc., a pulley is fixed to the rotating shaft protruding outward from one side of the guide rail. An angle adjustment string was hung from the pulley and hung from one side of the guide rail, and by operating this string, the rotating shaft was rotated and the angle of the slat was adjusted.

This pulley is fitted onto the end of the rotating shaft that protrudes from one side of the guide rail, and then a mounting hole is drilled through the pulley and the rotating shaft in a straight line using a drill etc. By inserting a fixing pin into the shaft, it was fixed to the rotating shaft. However, drilling holes in the rotating shaft and pulley with the pulley fitted to the rotating shaft is extremely troublesome, and requires a skilled technique to quickly drill a desired mounting hole.

Purpose This invention was made to overcome the drawbacks of the conventional examples as described above, and its purpose is to provide a pulley mounting structure that is easy to assemble.

Embodiment An embodiment embodying this invention will be described below with reference to the drawings. Reference numeral 1 indicates a guide rail for a vertical blind, and a mounting bracket (not shown).
It is fixed to the upper frame of the window or the ceiling, etc. Reference numeral 2 denotes a rotating shaft whose both ends are rotatably supported within the guide rail 1, and a spline 2a is carved in the axial direction on its surface. Reference numeral 3 denotes a guide runner which is movably provided along the guide rail 1, and a worm into which the rotating shaft 2 is inserted is disposed at the center of the guide runner. A worm wheel that meshes with the worm is provided within the guide runner 3, and a slat suspension section 5 that suspends and supports the slat 4 is connected to the worm wheel. Therefore, when the rotating shaft 2 is rotated,
The slat suspension part 5 is rotated via the swarm and worm wheel, and the angle of the slat 4 is adjusted.

Reference numeral 6 denotes an operating string for pulling out each slat 4 to the front of the window and folding it in to one side of the window by moving the guide runner 3 along the guide rail 1. A tensioning device 8 is suspended from the endless lower end reversing portion 6a, which is suspended from one side of the vertical blind via a pulley 7 provided on the side, to keep the operating string 6 hanging under tension at all times. ing.

Reference numeral 9 denotes a pulley fitted to the end of the rotating shaft 2 protruding outward from one side of the guide rail 1, on which the angle adjustment string 10 of the slat 4 is hung. When the angle adjustment string 10 is operated, the rotating shaft 2 is rotated and the angle of the slat 4 is adjusted.

The mounting structure of the pulley 9 will be explained with reference to FIGS. 2 to 5. As shown in FIG. It is being 12 and 13 are pulley 9
These are the pulley pieces that make up the. One of the pulley pieces 12 has a fitting cylinder 15 formed at the center of one side of the side plate 14, and a pair of locking protrusions 16 are formed protruding from the tip of the fitting cylinder 15 so as to face each other. Also,
Long holes 17 are provided at positions corresponding to the locking projections 16 of the fitting cylinder 15, extending from the vicinity of the base end of the locking projections 16 to the vicinity of the base end of the fitting cylinder 15.
A protrusion 18 is provided on the outer periphery of the fitting tube 15 to prevent slippage between the pulley 9 and the angle adjustment string 10.
are located at four equally spaced locations.

The other pulley piece 13 has a fitting cylinder 20 formed at the center of one side of the side plate 19 thereof. The fitting tube 2
The outer diameter of the pulley piece 12 is slightly smaller than the inner diameter of the fitting tube 15 of the pulley piece 12, so that the fitting tube 20 can be fitted into the fitting tube 15. Further, the inner diameter of this fitting cylinder 20 is formed to be slightly larger than the outer diameter of the rotating shaft 2, so that the rotating shaft 2 can be fitted into this fitting cylinder 20.

The fitting cylinder 20 has an elongated hole 2 similar to the elongated hole 17 extending from the center in the longitudinal direction to the base end of the fitting cylinder 20.
A pair of long holes 2 in the side plate 19 are formed facing each other.
At a position corresponding to 1, an engaging hole 22 is provided which has the same center line as the elongated hole 21 and into which the locking protrusion 16 of the fitting tube 15 can be fitted. Furthermore, four protrusions 23 similar to the protrusions 18 are arranged at equal intervals on the side plate 19 at positions spaced from the outer peripheral surface of the fitting tube 20 at intervals corresponding to the wall thickness of the fitting tube 15.
There are several locations. Reference numeral 24 is a spring pin which is provided so that its diameter can be slightly reduced based on a pressing force from the outer circumferential direction by bending a steel plate into a C-shaped cross section, and when the diameter is in the reduced diameter state, it can be inserted into the mounting hole 11. It's summery.

Now, the procedure for attaching the pulley 9 configured in this way to the rotating shaft 2 is to first attach the pulley piece 13.
The fitting cylinder 20 is fitted into the fitting cylinder 15 of the pulley piece 12, and the locking protrusion 16 is fitted into the engagement hole 22 to form the pulley 9. Then both pulley pieces 1
The tips of the elongated holes 17 and 21 provided in the holes 2 and 13 overlap to form a through hole 25 that allows the spring pin 24 to pass through the fitting tubes 15 and 20, as shown in FIG. Ru.

In this state, the pulley 9 is fitted to the end of the rotating shaft 2 protruding outward on one side of the guide rail 1, and the hole formed by the overlapping of the mounting hole 11 of the rotating shaft 2 and the long holes 17 and 21 is The through hole 25 is aligned with the through hole 25. Then, by fitting the spring pin 24 into the through hole 25 and the attachment hole 11, the pulley 9 is fixed to the rotating shaft 2.

Therefore, this pulley 9 has both pulley pieces 12,
No. 13 fitting tubes 15 and 20 are fitted, and in that state they are fitted to the end of the rotating shaft 2, and the through hole 25 is fitted.
By fitting the spring pin 24 into the mounting hole 11, it can be easily fitted onto the rotating shaft 2.

Note that this invention is not limited to the above-mentioned embodiment, and for example, as shown in FIGS. The fitting tube 20 is formed into a shape in which the proximal end portion of the fitting tube 20 is closed. The pulley pieces 12 and 13 may be fitted to form the pulley 9, the rotating shaft 2 may be fitted into the fitting cylinder 20, and the spring pin 24 may be fitted into the through hole 25 and the mounting hole 11. . In such a configuration, if the mounting hole 11 is provided at a position corresponding to the through hole 25 with the rotating shaft 2 fitted up to the closed surface of the fitting tube 20, the position of the through hole 25 and the mounting hole 11 can be adjusted. Matching can be done easily.

Further, in the above embodiment, the pulley 9 is rotationally driven by the angle adjustment string 10, but the pulley 9 may be rotationally driven by a ball chain. In this case, pulley pieces 12, 13
The protrusions 18 and 23 provided in the ball chain have a shape corresponding to a ball chain.

Effects As detailed above, in this invention, the mounting hole 11 is provided at the end of the rotating shaft 2, and the elongated holes 17, 21 are formed in the fitting tubes 15, 20 of the pulley pieces 12, 13 that constitute the pulley 9. Provide this pulley piece 1 for each
2 and 13 are fitted, a through hole 25 passing through the fitting cylinders 15 and 20 is formed, and the pulley 9 formed by fitting the pulley pieces 12 and 13 is attached to the end of the rotating shaft 2. By fitting the spring pin 24 into the through hole 25 and the mounting hole 11, the pulley 9 can be easily fitted onto the rotating shaft 2 without requiring any skill.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a vertical blind related to this invention, Fig. 2 is an exploded perspective view showing the pulley and rotating shaft of the invention, and Figs. 3 a and b are front and rear views showing one pulley piece. , Figure c is Figure a
Figure 4a and b are front and rear views showing the other pulley piece, figure c is a sectional view taken along line B-B in figure a, and figure 5a is a rotating pulley. Cross-sectional view showing the state fitted to the shaft, same figure b
is a cross-sectional view showing the state in which the spring pin is inserted,
FIG. 6a is a perspective view showing another example of the other pulley piece, and FIG. 6b is a sectional view taken along the line CC in FIG. 6a. Guide rail...1, Rotating shaft...2, Flat...4, Pulley...9, Angle adjustment string...1
0, Mounting hole...11, Pulley piece...12,1
3. Fitting tube...15,20, Long hole...17,2
1. Spring pin...24, Through hole...25.

Claims (1)

[Claims for Utility Model Registration] 1. In a vertical blind in which the angle of the flat 4 is adjusted by rotating a rotating shaft 2 supported on a guide rail 1 via a pulley 9 with an operating string 6, the end of the rotating shaft 2 A substantially diametrical mounting hole 11 is provided in the part, and when the fitting tubes 15 and 20 of the pulley pieces 12 and 13 constituting the pulley 9 are fitted together to form the pulley 9, the fitting tube 1
Elongated holes 17 and 21 are provided at positions corresponding to each other so that a through hole 25 passing through them is formed, and the pulley pieces 12 and 13 are fitted to form a pulley 9 at the end of the rotating shaft 2. A mounting structure for a pulley for adjusting the slat angle of a vertical blind, characterized in that the spring pin 24 is fitted into the through hole 25 and the mounting hole 11. 2. The long holes 17 and 21 are such that when the fitting cylinders 15 and 20 are completely fitted, only one end of each of the long holes 17 and 21 overlaps to form the through hole 25. A mounting structure for a pulley for adjusting the slat angle of a vertical blind according to item 1. 3 The elongated holes 17 and 21 are inserted into the side plate 1 from approximately the middle of the fitting cylinders 15 and 20 so that the spring pin 24 prevents the rotation shafts from coming off in the end direction.
A mounting structure for a pulley for adjusting the slat angle of a vertical blind according to claim 1, which extends in the 4 and 19 directions. 4 A pair of locking protrusions 16 are provided at the tip of the fitting cylinder 15 of one pulley piece 12, and an engagement hole 22 for engaging the locking protrusions 16 is provided in the side plate 19 of the other pulley piece 13. A mounting structure for a pulley for adjusting the slat angle of a vertical blind according to claim 1, which is a registered utility model. 5 The other pulley piece 13 closes the base end of the fitting tube 20, and the inner peripheral surface of the fitting tube 20 is formed in a shape to engage with the spline 2a of the rotating shaft 2, so that the rotating shaft 2 is fitted. When the joint tube 20 is inserted up to the closed surface, the mounting hole 11 is connected to both pulley pieces 12, 1.
Through hole 25 formed by long holes 17 and 21 of 3
A mounting structure for a pulley for adjusting a slat angle of a vertical blind according to claim 1 or 2, which is provided at a position corresponding to the above.