JPH0150751B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field This invention relates to a blind headbox.

Prior Art The head box 50 of a conventional blind is
As shown in Figure 8, those with a roughly channel-shaped cross section are mainly used, but since only the top is open, it is easy to install various devices such as the slat angle adjustment device M that is housed in the narrow head box. There was a problem that there was no.

Furthermore, since the top is open, dirt, water droplets, etc. can easily get in.

In addition, as shown in FIG. 19, a slat angle adjustment device M is installed between a frame member 51 having a gate-shaped cross section and both sides of its lower part, as shown in FIG.
A head box 50 has also been proposed in which a support section 52 for supporting various devices such as the above is engaged and supported.
52a are provided at the lower portions of both sides, the lifting cord 53 for lifting and lowering the slats (not shown) can hang only directly downward from the head box 50. Therefore, there was a problem in that the operating string 53 could not be operated from diagonally below the head box 50.

Purpose The purpose of this invention is to solve the above-mentioned problems, to make it possible to easily install various devices such as a slat angle adjustment device, to prevent dirt from entering, and to make it possible to raise and lower the slats. To provide a headbox for a blind which allows a lift string to be operated from diagonally below the headbox and which has good mountability to a mounting part such as an upper part of a window frame.

Embodiment An embodiment embodying the present invention will be described below with reference to FIGS. 1 to 17. This blind B has a large number of slats S connected to two ladder cords L as shown in FIG. The upper end of the ladder cord L is supported by a slat angle adjusting device M provided in the head box 3 of the blind B.

As shown in FIG. 14, each slat S is formed to have a substantially arcuate cross section, and three creases Sa are formed in the longitudinal direction to increase rigidity.
This is designed to prevent the slat S from bending between the two ladder cords L.

The detailed structure of the slat angle adjusting device M, the head box 3, and the mounting structure of the slat angle adjusting device will be explained.

Reference numerals 1 and 2 denote a support member having an L-shaped cross section and a lid member having an inverted L-shape cross section, which constitute the head box 3 having a rectangular cross section. An engaging protrusion 5 is formed. Reference numeral 5a denotes an upper side fitting groove (hereinafter simply referred to as a fitting groove) which is opened obliquely downward in the engagement protrusion 5, and is formed along the longitudinal direction of the lid member 2. 7 is the rear side 2 of the lid material 2
A rear side fitting groove (hereinafter simply referred to as a fitting groove) is formed inwardly in the lower end of the side edge of b in the shape of a channel, and is formed along the longitudinal direction of the lid member 2. Reference numeral 2c denotes a mounting flange portion protruding from both edges of the upper side 2a of the lid member 2.
It is formed along the longitudinal direction of the window, and is adapted to be attached to a mounting portion such as the upper part of a window via a bracket (not shown) or the like.

Reference numeral 4 denotes a side wall side fitting protrusion (hereinafter simply referred to as a fitting protrusion) provided at the upper end of the side edge of the side wall 1b of the support profile 1, which is formed along the longitudinal direction of the support profile 1, and is attached to the lid. It is possible to slide and fit into the fitting groove 5 on the upper side 2a of the lid mold 2 from the longitudinal direction of the lid mold 2. Reference numeral 6 denotes a bottom side fitting protrusion (hereinafter simply referred to as a fitting protrusion) provided at the rear end of the side edge of the bottom surface 1a of the support profile 1, which is formed along the longitudinal direction of the support profile 1; It can be slid and fitted into the fitting groove 6 on the rear side 2b of the lid 2 from the longitudinal direction of the lid 2.

Reference numeral 8 denotes a plug made of synthetic resin that is fitted into both ends of the head box 3, and includes an insertion portion 9 that is inserted while being pressed against the inner surface of the end portion of the head box 3, and a stopper provided at the base end of the insertion portion 9 that connects the end of the head box 3. It consists of a flange 10 that is latched to the section.
As shown in FIG. 13a, engagement recesses 11 are formed on both sides of the upper part of the insertion portion 9 to engage with the inner circumferential surface of the engagement protrusion 5 of the lid member 2. Further, a locking tongue piece 12 is formed at the lower part of the insertion part 9, and a locking protrusion 13 formed on the lower surface of the tip of the tongue piece 12 locks into an engaging hole 14 formed transparently in the bottom surface 1a of the support section 1. This is designed to prevent the stopper 8 from coming off the head box 3.

Reference numeral 15 shown in FIGS. 6 and 11 is a pair of mounting grooves cut into the side of the bottom surface 1a of the support section 1 at the mounting position of the slat angle adjustment device M, and tapered guides 15a are provided on both sides of the opening. is formed.

Reference numeral 16 denotes a box-shaped support member that is engaged with one of the mounting grooves 15 so as to be accommodated in the head box 3, and is made of synthetic resin. As shown in FIG. 5, a track-shaped attachment part 17 is formed protrudingly on the lower surface of the bottom of the support member 16, and an engagement groove 18 is recessed in the outer periphery of the attachment part 17.
It is attached by inserting the engagement groove 18 from the opening of the attachment groove 15 into the bottom portion 1a.

Reference numeral 19 denotes a track-shaped insertion hole transparently provided at the bottom of the support member 16 at an inner position of the mounting portion 17, and a slit 20 cut into the side wall of the support member 16 corresponding to the opening side of the mounting groove 15. The ladder cord L and a blind lifting cord 47 (to be described later) can be introduced into the insertion hole 19 from the outside of the side through the slit 20.

21 is a support member 16 positioned slightly diagonally above the insertion hole 19 (diagonally on the right in FIG. 2).
A guide roller for a blind lift string 47 rotatably arranged between both side walls 16a, 16b of the support member 16, and detachable from the bearing groove 22 formed from the upper side of the side walls 16a, 16b of the support member 16. The shaft 21a is inserted and supported at its lower end.

Reference numeral 23 denotes a pair of protrusions that protrude outward from one end (the right end in FIGS. 2 and 3) of the support member 16 at a distance from each other, and a connecting part 23a is connected between the tips of the protrusions 23. connected via.

Reference numeral 24 denotes a guide roller for the blind lifting cord 47, which is rotatably arranged between the protrusions 23 so as to be located slightly above the guide roller 21, and in particular, as shown in FIG. The shaft 24a is inserted into the bearing groove 25 recessed from the lower part of the inner surface of the portion 23, and is removably installed between the upper end of the bearing groove 25 and a drop-off prevention portion 26 whose width is slightly narrower than the diameter of the shaft 24a. It is worn.

Reference numeral 27 indicates a pair of bifurcated bearing portions projecting upward from both ends of the support member 16, and reference numeral 28 indicates the bearing portion 27.
A through hole is provided in both end walls of the support member at the lower side, and communicates with the outside via a slit 29 cut into the lower end of the bearing portion 27, and is connected to the lifting cord 4.
7 can be guided from above the support member 16 through the slit 29 and into the through hole 28. In addition,
Reference numeral 27a is a locking portion that protrudes slightly inward from the upper portions of both sides of the bearing portion 27, and is designed to prevent the support shaft 31, which will be described later, from easily coming off from the bearing portion 27.

30 is a slit 2 between both end walls of the support member 16;
The guide rod is a guide rod bridged at a distance from the side wall 16a opposite to the guide roller 2.
It is positioned slightly above 1.

Reference numeral 31 denotes a support shaft for adjusting the tilting of the ladder cord L rotatably supported between the bearing portions 27 of the support member 16, which is molded from synthetic resin and has a hexagonal engagement hole in its center. 32 is penetrated.
Note that when the support shaft 31 is moved upward from the bearing portion 27, it engages with the locking portion 27a, but when a force exceeding a predetermined level is applied to the locking portion 27a, the space between the locking portions 27a expands due to its elasticity. The support shaft 31 is designed to be detachable.

33 is a metal sleeve wrapped around one end of the support shaft 31 (the right end in FIG. 2), and a claw 34 is cut out on the outer periphery as shown in FIG. The upper end of the ladder cord L is engaged with this claw 34, and the claw 34 is pressed against the support shaft 31 side.

Reference numeral 35 denotes a drum integrally formed at the center of the support shaft 31, on which the center part of the slat angle adjustment string 36 is wound and fixed as shown in FIG. The insertion hole 1 of the support member 16
It is suspended below the head box 3 via 9.

Then, by pulling either end of the adjustment string 36, the drum 35 is rotated clockwise or counterclockwise, and the ladder cord L attached to the support shaft 31 is rotated.
The inclination angle of the slat S can be arbitrarily adjusted via the slat S.

Reference numeral 37 shown in FIG. 2 is a drive shaft whose one end is fitted into the engagement hole 32 of the support shaft 31, and a ring 38 fitted to the outer periphery of the left end of the support shaft 31 and the support shaft 31 are both screwed in from the outer periphery direction. The fixed screw 39 prevents the support shaft 31 from coming off.

Reference numeral 40 shown in FIGS. 7 to 10 is a box-shaped support member that is engaged with the other mounting groove 15 so as to be accommodated in the head box 3, and is made of synthetic resin. Since this support member 40 has a configuration in which the protruding portion 23, the connecting portion 23a, the guide roller 24, and the guide rod 30 are omitted from the configuration of the support member 16, the other components are designated by the same reference numerals. The explanation will be omitted.

Reference numeral 41 denotes a support shaft rotatably supported between the bearing portions 27 of the support member 40, and is made of synthetic resin. The other end is fitted.

Similarly to the support shaft 31, the support shaft 40 also stops when the locking portion 2 of the bearing 27 is applied upwardly.
It is designed to separate upward from 7a.

43 is a metal sleeve wrapped around the outer periphery of the support shaft 41, and has a claw (not shown) on the outer periphery, and the upper end of the ladder cord L is engaged with this claw to support the claw (not shown). It is crimped onto the shaft 41 side.
The support members 16 and 40, the support shafts 31 and 41, and the drive shaft 37 constitute a slat angle adjustment device M.

As shown in FIG. 1, reference numeral 44 is a lifting cord locking device provided in a mounting hole 45 transparently provided at the abutting portion of the bottom portion 1a and the side wall 1b at the right end portion of the support frame 1, and is connected to a guide roller (not shown). (not shown) and a locking roller that cooperates with a guide roller (not shown) to clamp a lifting cord 47 (described later).

Reference numeral 47 denotes a pair of elevating strings for elevating the slat S, one end of which is connected to a guide roller (not shown) of the elevating string locking device 44 and the locking roller 4.
It is suspended below the head box 3 through the mounting hole 45 from between the holes 6 and 6. One other end of the lifting string 47 is located below the guide roller 24 of the support member 16;
It hangs down from the through hole 28 and the guide roller 21 through the insertion hole 19 to the lower part of the head box 3, passes through each slat S, and is connected to one end of the bottom rail 48. The other end of the other elevating cord 47 is inserted into each through hole 28 of the support member 16, and is suspended below the head box 3 through the guide roller 21 and the insertion hole 19 of the support member 40, so that each slat S is It passes through and is connected to the other end of the bottom rail 48.

A method of assembling the head box 3 and the slat angle adjusting device M constructed as described above will be explained.

6 and 11, with the support member 1 and the lid member 2 removed, insert the engagement groove 18 of each support member 16, 40 into the mounting groove 15 from the opening side of the support member 1. Push in the width direction to engage the bottom portion 1a. At this time, each of the support members 16 and 40 shall be mounted so that the slit 20 corresponds to the opening of the mounting groove 15.

On the other hand, the sleeves 33 of the support shafts 31, 41 are assembled with each slat S to the elevator cord 47 and the ladder cord L, which have one end attached to the bottom rail 48 in advance, and the upper ends of the ladder cord L are arranged at both ends of the drive shaft 37, Tie it to 43.

The upper part of the ladder cord L attached to the support shafts 31, 41 and the lifting cord 47 at the corresponding position
is inserted through the slit 20 into the insertion hole 19 of the support members 16 and 40.

Then, connect the lifting cord 47 on the supporting member 40 side to the slit 20 on the right end side of the supporting member 40 (see FIG. 7).
and slits 20 at both ends of the support member (see Figure 2)
It is inserted into each through hole 28 through the hole 28, and is made to go under the guide roller 24 of the locking member 16.

In addition, the lifting cord 47 on the supporting member 16 side is inserted into the through hole 28 through the slit 20 (see FIG. 2) on the right end side of the supporting member 16, and is slid below the guide roller 24 of the supporting member 16, so that the supporting member 40 Together with the side lifting string 47, the end portion is suspended below the support frame 1 as shown in FIG. 1 after passing between the guide roller (not shown) of the lifting string locking device 44 and the locking roller 46.

As mentioned above, the lifting cord 47 is connected to each support member 16,
40, the support shaft 31 and the support shaft 41 are inserted into the bearing portions 27 at both ends of the support members 16 and 40.
from above (see Fig. 2 and Fig. 7). Note that during this engagement, the support shafts 31 and 41 are once locked in the locking part 27a on the upper part of the bearing part 27, but when a certain amount of force is applied, the space between the locking parts 27a is expanded due to its elasticity, so the bearing It is supported by section 27. Further, after the support shafts 31 and 41 are engaged with the bearing portion 27, the space between the locking portions 27a returns to its original state due to its own elasticity, thereby preventing the support shafts 31 and 41 from coming off from the bearing portion 27.

After that, the adjustment string 36 wound around the drum 35
Both ends of the support member 16 are inserted through the insertion hole 19 between the guide rod 30 and the side wall 16a, and are suspended below the support member 1 (see FIGS. 1, 3, and 4).

Then, the fitting groove 7 and the fitting groove 5a of the lid member 2 are respectively fitted into the fitting protrusion 6 and the fitting protrusion 4 of the support member 1 from one end side (see Fig. 4 and Fig. 9). .

Thereafter, the plug body 8 is inserted into both ends of the head box 3 while engaging the engagement protrusion 5 with its engagement recess 11, and the engagement protrusion 13 of the engagement tongue piece 12 is inserted into the support section 1. It locks into the engagement hole 14 (Figs. 1 and 13).
(see figure).

Therefore, the stopper 8 is locked in the engagement hole 14 and is prevented from coming off the head box 3.

In the head box 3 as described above, the assembling work of the slat angle adjusting device M is as shown in Fig. 6 and 1.
As shown in Fig. 1, the upper part and one side of the supporting frame 1 are open, making the work easier and easier.

Furthermore, since a mounting hole 45 for the lifting cord locking device 44 can be provided at the abutment between the bottom portion 1a and the side wall 1b of the support frame 1, the lifting string 47 for lifting and lowering the slat S can be suspended diagonally downward from the head box 3. be able to. Therefore, even when the lifting cord 47 is operated diagonally from below, it can be operated without any problem.

The head box 3 is surrounded by the support member 1, the lid member 2, and the stopper 8.
Since the opening of the fitting groove 5a at the front end of the lower side edge of the upper side 2a is set diagonally downward, when the fitting protrusion 4 of the support section 1 is fitted into the fitting groove 5a, for example,
Water droplets may form on this mating part (because the blind is installed close to the window, when the outside temperature is low, such as in winter, condensation occurs due to the difference between the inside temperature and water droplets often form on the head box). It is in)
Even if the water droplets adhere to the head, the water droplets do not enter the head box 3 for the reasons explained below.

In other words, water droplets that have entered the mating part cannot enter the head box 3 unless they rise against gravity and overcome the mating protrusion 4, so any pressure generated by condensation is not applied. This is because a water droplet that is not in position cannot rise against gravity.

Therefore, problems such as water droplets entering the head box 3 and causing failure of the slat angle adjusting device M, etc. can be reliably prevented.

Furthermore, since the mounting flange portions 2c are provided on both sides of the upper side 2a of the lid member 2, the head box 3 can be easily attached to the mounting portion such as the upper part of the window frame via a bracket or the like to the mounting flange portions 2c. Not only is this possible, but since there is no need to directly provide a mounting hole or the like in the lid member 2 for mounting to the mounting portion, it is possible to reliably prevent water droplets from entering the head box 3 from this portion.

Although not directly related to the invention, the fitting protrusion 6 of the support section 1 of the head box 3 and the fitting groove 7 at the bottom of the lid section 2 are both extended downward so that when the slat S is tilted to its maximum, the bottom section of the auxiliary section 2 It may also be possible to prevent sunlight or other light from leaking into the room between the top and top slats Sa.

Effects As described in detail above, the present invention allows a supporting member having an L-shaped cross section and a lid member having an inverted L-shaped cross section to be fitted into each other by fitting portions formed at the upper and lower portions of the supporting member and the lid member having an inverted L-shaped cross section, respectively. The head box of the blind is formed into a box with a square cross section, and the upper side fitting groove is formed with an opening facing downward or diagonally downward at the front end of the lower side edge of the upper side of the lid member. In addition, a rear side fitting groove is provided along the longitudinal direction of the lid, and a rear side fitting groove is provided at the lower end of the rear side edge of the lid, and a mounting flange is provided on both sides of the upper side of the lid. is provided along the longitudinal direction of the lid member, and a side wall side fitting protrusion is provided at the upper end of the side edge of the side wall of the support member, which can be fitted into the upper side fitting groove of the lid member from the longitudinal direction of the lid member. In addition, the slat angle can be adjusted by providing a bottom side fitting ridge on the rear end of the side edge of the bottom of the support section that can be fitted into the rear side fitting groove of the cover section from the longitudinal direction of the cover section. You can easily install various devices such as devices,
It is difficult for dirt and water droplets to enter, and the outlet for the lifting cord for raising and lowering the slats can be opened diagonally toward the plug, and the lifting cord can be pulled diagonally downward for operation. In addition, the supporting frame and the cover frame can be easily assembled or removed by simply sliding them together, so you can easily temporarily fasten them together while assembling the blind, or slide the cover frame only as much as necessary to assemble the blind. The head box can be easily inspected and repaired internally, and new mechanical parts can be added.Furthermore, the head box can be easily attached to a mounting part such as the top of a window frame, which is an excellent effect. play.

[Brief explanation of drawings]

1 to 17 show an embodiment embodying the present invention, in which FIG. 1 is an overall perspective view, and FIGS. 2 to 4
The figures are a front sectional view, a plan view, and a cross sectional view showing the attached state of one of the support members, FIG. 5 is a bottom view of the same support member, FIG. 6 is a perspective view of the same support member, and FIG.
9 to 9 are a front sectional view, a plan view, and a cross sectional view showing the attached state of the other support member, FIG. 10 is a bottom view of the same support member, FIG. 11 is an exploded perspective view thereof, and FIG. 12 13 is a perspective view of the stopper, FIGS. 13a and 13b are a horizontal cross-sectional view and a vertical cross-sectional view showing the attached state of the stopper, respectively, FIG. 14 is an enlarged cross-sectional view of the slat, and FIG. 15 is a perspective view of the stopper.
1 to 17 are front views, cross-sectional views, and side views of the support shaft, and FIGS. 18 and 19 are cross-sectional views showing conventional examples, respectively. Support profile...1, Bottom surface...1a, Side wall...1
b, Lid mold material...2, Top side...2a, Back side...2
b, Mounting flange portion...2c, Head box...3, Side wall side fitting protrusion...4, Top side fitting groove...
...5a, Bottom side fitting protrusion...6, Rear side fitting groove...
...7.

Claims (1)

[Claims] 1. A support material 1 having an L-shaped cross section and a lid material 2 having an inverted L-shape cross section are fitted into each other through fitting portions formed at the upper and lower parts thereof, respectively, to form a box with a square cross section. In the head box 3 of the blind, an upper side fitting groove 5a having an opening directed downward or diagonally downward at the front end of the lower side edge of the upper side 2a of the lid member 2 is inserted along the longitudinal direction of the lid member 2. In addition, a rear side fitting groove 7 is provided at the lower end of the side edge of the rear side 2b of the lid member 2 along the longitudinal direction of the lid member 2, and mounting flanges are provided at both side edges of the upper side 2a of the lid member 2. The part 2c is provided along the longitudinal direction of the lid 2, and can be fitted into the upper end of the side edge of the side wall 1b of the support 1 into the fitting groove 5a on the upper side of the lid 2 from the longitudinal direction of the lid 2. Side wall side fitting protrusion 4
At the same time, at the rear end of the side edge of the bottom surface 1a of the support section 1, there is provided a bottom side fitting protrusion 6 which can be fitted into the rear side fitting groove 7 of the cover section 2 from the longitudinal direction. A blind head box characterized by the following: