JPS6340914B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (INDUSTRIAL APPLICATION FIELD) This invention relates to a blind headbox.

(Prior Art and Problems to be Solved by the Invention) Conventional head boxes for blinds mainly have a substantially channel-shaped cross section that opens upward. Furthermore, the slat angle adjustment device installed in the headbox configured as described above includes a support member provided near the through hole at the bottom of the headbox, a support shaft supported by the support member, and an upper end of the device connected to the support shaft. It is comprised of a ladder cord, etc., which is fixed and hangs downward through the through hole.

To attach the slat angle adjustment device to this headbox, first attach a support member having a support shaft to the headbox, and then, with the slat assembled to the ladder cord, insert the upper end of the ladder cord into the through hole. Furthermore, the upper end of the same ladder cord was tied to the support shaft. Then,
This installation work is troublesome, especially in a narrow head box because only the top is open. Furthermore, this problem is common not only to slat angle adjusting devices, but also to various devices having downwardly hanging strings.

Alternatively, a head box has been proposed in which a member with a portal-shaped cross section and a support member for supporting a slat angle adjustment device etc. are engaged and supported between both sides of the lower part of the head box, but this type of head box also has the same problem. It was hot.

Structure of the Invention (Means for Solving the Problems) In the present invention, in order to solve the above-mentioned problems, a mounting groove is installed at the bottom of a support member formed into an L-shaped cross section by a bottom surface and a side wall from the side opposite to the side wall. An auxiliary profile member having an inverted L-shaped cross section is placed opposite to the support profile member so as to accommodate a support member such as a slat angle adjusting device that is inserted through the opening of the mounting groove and installed. It is characterized by being fitted.

(Function) The support member of the slat angle adjustment device, to which the ladder cord etc. have been assembled in advance, is inserted through the opening of the mounting groove of the support section, and furthermore, the auxiliary section is opposed to the support section and attached to the same support section. mated to.

(Embodiment) An embodiment embodying the present invention will be described below with reference to FIGS. 1 to 17. 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. The formed cylindrical fitting protrusion 4 can be fitted into a concave fitting groove 5a in an engaging protrusion 5 formed on the upper side lower surface side edge of the lid member 2 and having a substantially cylindrical cross section. . In addition, a fitting groove 7 formed in a channel shape inward along the longitudinal direction of the lower part of the lid part 2 is provided in a fitting protrusion 6 formed to protrude downward along the longitudinal direction on the other side edge of the bottom part 1a of the support part 2. can be fitted.

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 denotes a pair of mounting grooves cut into the side of the bottom 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 disposed 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 protruding part 23, and can be detached between the falling-off prevention part 26 whose width is slightly narrower than the diameter of the shaft 24a and the upper end of the bearing groove 25. It is attached.

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 denotes locking portions that protrude slightly inward from the upper portions of both sides of the bearing portion 27, and are designed to prevent the support shaft 31, which will be described later, from easily coming off 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. 15. 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.

40 shown in Figs. 7 to 10 is the head box 3.
It is a box-shaped support member that is engaged with the other mounting groove 15 so as to be housed therein, and is made of synthetic resin. This support member 40 is the support member 1
6, the protruding portion 23, the connecting portion 23a, the guide roller 24, and the guide rod 30 are omitted, so the other components are designated by the same reference numerals and their explanation will be omitted.

Reference numeral 41 denotes a support shaft rotatably supported between the bearing portions 27 of the support member 40, which is made of synthetic resin, and has a hexagonal engagement hole 42 in the center thereof. The other end is fitted.

Similarly to the support shaft 31, the support shaft 41 also stops when the locking portion 27 of the bearing portion 27 is applied upwardly.
It is designed to separate upward from a.

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 includes 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, the slit 20 is inserted into the mounting groove 15.
Each support member 16, 40 shall be attached so as to correspond to the opening.

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 , and is made to go under the guide roller 24 of the support 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 inserted below the guide roller 24 of the supporting member 16, and the lifting string 47 on the supporting member 16 is Together with the lifting cord 47 on the 40 side, the end portion thereof is suspended below the support frame 1 as shown in FIG.

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.
(See Figures 2 and 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 6a, 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 mounting groove 15 is cut into the bottom 1a of the support member 1 from the side opposite to the side wall 1b. After assembling all the components in advance, the support members 16, 40 can be easily attached with one touch by simply inserting the support members 16, 40 in the width direction of the support member 1 through the openings thereof. Further, since the upper part and one side of the support section 1 are open, the slat angle adjusting device M can be assembled very efficiently.

Then, as mentioned above, the slat angle adjustment device M
After assembling, the support members 16 and 40 fit into the mounting groove 15 in order to fit the lid member 2 to the support member 1 from the end.
It can be securely attached without falling out.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and may be modified as desired without departing from the spirit of the present invention.

Effects As described in detail above, in the present invention, a mounting groove is cut into the bottom surface of a support member formed into an L-shaped cross section by a bottom portion and a side wall from the side opposite to the side wall, and an opening of the mounting groove is formed. The slat angle adjustment device is constructed by fitting an auxiliary section having an inverted L-shaped cross section to the support section so as to accommodate the support member for the slat angle adjustment device, etc., which is inserted and attached from the support section. This provides an excellent effect in that the various devices can be attached to the head box after all the various devices have been assembled in advance.

[Brief explanation of the drawing]

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.
Figures 1 to 17 are a front view, a sectional view, and a side view of the support shaft. Supporting part...1, Bottom part...1a, Side wall...1b, Lid part...2, Head box...3, Mounting groove...15, Supporting member...16, 40, Mounting part...17, Engagement groove...1
8. Slat angle adjustment device...M.

Claims (1)

[Claims] 1 A mounting groove is cut into the bottom of a supporting frame formed into an L-shaped cross section by a bottom surface and a side wall from the side opposite to the side wall, and the slat angle is installed by inserting from the opening of the mounting groove. 1. A headbox for a blind, characterized in that a lid member having an inverted L-shaped cross section is fitted to the support member so as to face each other so as to house a support member such as an adjustment device.