JPS6329108Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application: This invention relates to a bellows-type sunshade device that expands while rising from the bottom to the top. Regardless of whether the window is wide or narrow, the sunshade can be smoothly extended from below. The idea is to provide a sunshade that can be raised upwards to any height and stopped.

Conventional technology and problems: This type of awning has already been published in Japanese Patent Application Laid-Open No. 1986-
Although the present applicant has disclosed technical matters incorporated in a double-glazed window in Publication No. 30022, the present invention was proposed as an improved type with excellent practicality.

In the structure disclosed in the above publication, the lower winding drum of the guide string is fixed to the winding shaft, and it is necessary to install at least 4 to 5 winding drums in a wide awning. Become. In this case, for example, if one guide string becomes loose or breaks, each winding drum is fixed to the winding shaft, so the adjustment is made by loosening all the other guide strings in the same way, and the winding There was the inconvenience of having to do so. In addition, in FIG. 3 described in the above publication, the long winding shaft 23 is supported by bearings 24 and 25 at both left and right ends, and each bearing receives a bending moment as a support beam at both ends with a long span, or wear and tear. In some cases, accidents were unavoidable, and smooth operation could not be expected. In addition, the upper part was inconvenient especially for wide windows because the work was done using guide rollers.

Means and Examples for Solving Problems: This project is a proposal to solve these problems, and its most distinctive feature is that it is foldable and can be expanded while rising from the bottom to the top. A sunshade device is equipped with a bellows-type sunshade, and the raising strings and guide strings of the sunshade are wound along the threaded valleys of a screw drum with threads cut on the outer surface. The screw drums are arranged and supported by independent bearing bodies that are screwed onto the screws, and each screw drum is penetrated by a rotating shaft having a rectangular cross section that is slidable and rotatable at the center of the screw drum. At the same time, the lower end of the ascending string and the upper end of the guide string are fixed to the upper plate of the sunshade, the upper end of the ascending string is fixed to the right end of the upper screw drum, the lower end of the guide string is fixed to the left side of the lower screw drum, and the lower end is fixed to the lower rotating shaft coaxially. A coil spring is attached to the shaft to drive the sunshade when it is lowered.

To explain the embodiment in detail based on the drawings, FIG. 1 is a front view of the interior of a window to which the sunshade device of the present invention is attached, in which 1 is a window frame, 2 is a shoji, which is rotated by a shaft device 3. I can do it. The sunshade 4 is raised or lowered by an endless operating string 5, and FIG. 1 shows the sunshade 4 raised to about 1/3 of its height from below. As shown in FIGS. 2 to 7, the sunshade 4 has a bellows-type structure that includes an upper plate 6 at the upper end and a lower plate 7 at the lower end, and can be freely folded by folds 8 and 9 between them. In this embodiment, the sunshade is made of opaque or translucent fabric. Axle boxes 12 and 13 each having a U-shaped cross section are provided on the upper surfaces of the upper frame 10 and lower frame 11 of the shoji 2 in the hollow layer, with a bottom plate 22 and a top plate 35 facing each other, respectively. In the upper axle box 12, the fourth
As shown in Figure 5, in this example, there is a right-handed thread 5 on the outer surface.
Screw drum 1 with a square hole formed in the center by cutting 2 into pieces
A collar 15 is arranged at the right end of the screw drum 1 by placing a collar 15 on the right end of the screw drum 1 and passing the rotating shaft 14 having a square cross section through the square hole.
6 and 17 are rotatably supported while sliding on this rotating shaft 14. The screw drums 16, 17
are supported by bearing bodies 18 and 19 that are screwed together with the screw drum, and their pedestals 20 and 21 are connected to the axle box 12.
are respectively fixed to the bottom plate 22 of. As shown in FIG. 5, the sunshade 4 is completely lowered and the screw drums 16, 1
7 is screwed into the bearing bodies 18, 19 up to the collar, one end of the lifting strings 24, 25 is fixed to the protrusion 23 of the collar 15 of the screw drum. The diameter of the ascending strings is smaller than the pitch of the screws 52 on the outer surfaces of the screw drums 16, 17, and the ascending strings 24, 25 are wound along the troughs of the screws 52 when the sunshade is raised, and are loosened when descending. . The lifting strings 24 and 25 fixed to the projections 23 as described above hang down through the through holes 26 and 27 of the pedestals 20 and 21 directly below, and the other ends are fixed to the upper plate 6 of the sunshade 4. As shown in FIG. 3, a well-known worm axle box 28 is provided at the right end of the upper axle box 12, and within the worm axle box, the rotary shaft 14 is provided with a worm wheel 29, and a worm 30 (none of which is shown). The drive pulley 32 of the vertical worm shaft 31 is interlocked with the drive pulley 32 of the vertical worm shaft 31. The pulley 32 is rotatably supported by an endless operating string 5 guided to a group of guide groove rollers 33 and a group of rollers 34 for taking out from the shoji screen. Next, lower axle box 1
3 shows the state in which the screw drums 16, 17 and the bearing bodies 18, 19 are screwed together as detailed in FIG. The screw drums 39, 40 are supported by bearing bodies 36, 37 of the same shape, which are located in exactly the same relational positions, and the respective collars 15 are arranged on the left side of the bearing bodies 36, 37 opposite to the collars 15 of the upper screw drums 16, 17. ,
The pedestals 45, 46 of the bearing bodies 36, 37 are fixed to the top plate 35 of the axle box 13, facing the pedestals 20, 21 of the upper bearing bodies 18, 19. Similar to the above, the rotating shaft 38 is passed through the square holes of the screw drums 39, 40. When the upper and lower rotating shafts 14 and 38 rotate in the same direction, the upper and lower screw drums 16 and 17
The flanges 15 of 39 and 40 are configured to move in left and right opposite directions while rotating in the same direction. On the other hand, the guide strings 41 and 42 of the sunshade 4 are the rising strings 2
4 and 25, and one end is fixed to the protrusion 23 of the collar 15 of the lower screw drum 39, 40. As shown in FIG. 7, the other end is fixed to the upper plate 6 and has guide strings 41 and 42 long enough to raise the entire sunshade, and when the sunshade 4 is completely lowered in advance, the lower part is rotated. The shaft 38 is screwed into the drum 3
9 and 40 along the troughs of the screws 53, and insert the respective ends into the through holes 47 and 4 of the pedestals 36 and 37.
8 and pass through the through holes 54 and 55 of the lower plate 7 of the awning 4. The upper plate 6 of the awning 4 passes through the through holes 43 and 44 between the folds 8 and 9 of the folded awning 4. Attaches to the bottom of the. Reference numeral 49 denotes a right-handed coil spring inserted into the rotating shaft 38, and coaxially, one end 50 is fixed to the rotating shaft 38 and the other end 51 is fixed to the axle box 13.

Function and effect: The sunshade device of the present invention has the above structure, and the rising string is fixed to the upper screw drum on the right side of the bearing body,
The guide string of the awning is fixed to the lower screw drum on the left side of the bearing body, so when both screw drums of the same shape rotate in the same direction and the ascending string is wound around the upper screw drum, the lower screw drum Then, when the guide string is loosened, or when the ascending string of the upper screw drum is loosened, the lower screw drum is rotated by the unwinding reaction force of the coil spring, and the guide string is wound up. Each string can be kept under tension to raise and lower the awning. The folds 8 and 9 of the awning 4 are folded to form the lower axle box 13.
In the state shown in FIG. 5 when it is on top plate 35 of Located close to. On the other hand, the guide strings 41 and 42 are connected to the through holes 54 and 55 of the lower plate 7, respectively.
The screws pass through the base plates 47, 48 of the screw drums 39, 40 and are wound in the same direction along the troughs of the screws 53 of these drums. In this state, as shown in FIGS. 1 and 3, when the endless operation string 5 is pulled in the direction of arrow A, the drive pulley 32 rotates clockwise, and the rotation axis 1
4 rotates in the direction of arrow B, which is opposite to the clockwise direction.
Therefore, the screw drums 16, 17 of the rotating shaft 14 advance in the direction of the arrow C while winding the ascending strings 24, 25 along the troughs 52 of the screws. At this time, the lifting strings 24 and 25 are connected to the through holes 26 and 27 of the base plates 20 and 21.
As described above, the screw drum 52 is wound along the troughs of the screw 52, so they do not overlap each other, and the screw drum slides on the rotating shaft 14 and moves in the C direction, and the winding is always carried out on the bearing. This is done at a position close to the body, and as shown in FIG. 6, the upper plate 6 of the sunshade 4 is raised while loosening the folds of each fold from above. At the same time, the guide strings 41 and 42 whose upper ends are fixed to the lower side of the upper plate 6 are pulled upward. The guide strings 41 and 42 have a length sufficient to reach the uppermost position of the upper plate 6, and are preliminarily connected to the lower screw drum 3.
9 and 40, as the upper plate 6 of the sunshade 4 rises, the screw drums 39 and 40 move in the direction of arrow D.
It rotates in the direction of , and at the same time moves in the direction of E. Therefore, the guide strings 41 and 42 are connected to the lower plate 7 and the base plates 45 and 4.
It passes through the through holes 47, 54 and 48, 55 of No. 6 and extends upward. As shown in FIG. 7, the upper plate 6 reaches the bottom 22 of the upper axle box 12 and the sunshade 4
ends up rising. When this awning is raised, the lower axle box 13
The coil spring 49 inside has one end 50 connected to the rotating shaft 3.
8. Since the other end 51 is fixed to the axle box 13, the number of windings increases successively as the rotation arrow D rotates, and a force that tries to return to the original state, that is, a reaction that tries to rotate in the direction of the arrow F. Although energy is stored and the guide strings 41 and 42 are used to try to rotate the rotary shaft 14 in the direction of arrow H, the rotation is not possible. Next, when lowering the awning 4 from the position shown in FIG. 7, by pulling the operating string 5 in the direction of arrow G in the opposite direction to the above, the rotating shaft 14 in the upper axle box 12 will rotate in the direction of arrow H. Each rising string 24, 25
are loosened from the respective screw drums 16, 17. At this time, the coil spring 49 is moved by the arrow F as described above.
Since the screw drums 39 and 40 store rotational energy in the same direction, they wind the guide strings 41 and 42 along the valley of the screw 53 to the position shown in FIG. .
Thus, the awning can return to its original longitudinal position with each string always under tension. Even with wide windows, a screw drum and a bearing body are provided for each ascending string, so that an excessive bending moment load is not applied to the bearing body. That is, the load is distributed by the bearing bodies corresponding to the number of lifting strings and therefore the number of screw drums, and the load due to the bending moment on the mutually independent bearing bodies is also reduced.

As shown in the embodiment, the sunshade device of the present invention is built into the horizontal rotating window, and even when the sunshade is partially raised as shown in FIGS. is always kept in tension and holds the upper plate 6, and each fold of the sunshade is connected to the through hole 8a,
Since the awning is held by 9a..., the opening angle of the awning is constant, and it does not bend.As shown in Figure 8, the awning can be stopped at any position from below while opening the window to block sunlight. can do. In addition, each string on the screw drum is independent, so if there are many pulling strings or guide strings, such as a wide window awning, if a part of the string becomes loose or breaks, only that part will need to be replaced. It is convenient to be able to repair it. Furthermore, for wider windows, it is natural to arrange two or more screw drums of the present invention. FIG. 9 shows an embodiment in which the sunshade device of the present invention is attached to the indoor side of a general sliding sash, where 56 is the frame, 57 is the shoji, 0 is the outdoor side, and I is the indoor side. The window frame 56 is fixed to the base body 60 on all four sides by anchors 61. 62 and 63 are extensions of the upper frame and lower frame, and are the same axle boxes 12 and 13 as above.
are fixed to the extensions 62 and 63, respectively. The upper rotating shaft 14 is connected to a drive pulley 32 via a worm wheel and a worm inside an axle box 28. The rest of the structure is exactly the same as the awning device described above, and the awning can be raised or lowered by the operation string 5.

[Brief explanation of drawings]

Figure 1 is a front view of the interior when the proposed sunshade device is installed on a horizontal rotating window, Figure 2 is a vertical sectional view, Figure 3 is a left perspective view from the indoor side with a portion of the sunshade cut away, and Figure 4 is a perspective view from the outside of the room showing how the ascending string is wound up to the upper left screw drum, Figure 5 is a front view with the sunshade folded to the lowest position, and Figure 6
Figure 7 is a front view when the sunshade is in the middle of being raised, Figure 7 is a front view when the sunshade is fully raised, and Figure 8 is a front view when the sunshade is in the middle of being raised.
The figure is a vertical cross-sectional view of the shoji in a rotating state, and FIG. 9 is a partially cutaway vertical cross-sectional view of the proposed awning installed on the indoor side of the sliding window. 4...Sunshade, 6...Top plate, 8,9...Folds,
14, 38... Rotating shaft, 16, 17, 39, 40
... Screw drum, 18, 19, 36, 37 ... Bearing body, 24, 25 ... Rising string, 41, 42 ... Guide string, 49 ... Coil spring, 50, 51 ... Both ends of coil spring, 52, 53...screw.

Claims (1)

[Scope of utility model claims] A collapsible bellows-type sunshade is provided that expands while rising upward from the bottom, and a rising string and a guide string of the sunshade are wound along the threaded valleys of a screw drum having threads cut on its outer surface. In this sunshading device, the screw drums are disposed vertically facing each other for each of the lifting strings and guide strings, and each screw drum is supported by an independent bearing body that is screwed into the screw, and each screw drum has its central portion sliding. The lower end of the ascending string and the upper end of the guide string are connected to the upper plate of the sunshade, and the upper end of the ascending string is connected to the right end of the upper screw drum. A coil spring for rotating the drum is attached to the left end of the lower drum, and one end is attached to the lower rotating shaft and the other end is attached to the axle box so that the guide string can be wound along the valley of the screw drum when the awning is lowered. A sunshade device consisting of