JPS5823919Y2 - Intermediate support device for roller pipe for roll screen - Google Patents

Description

[Detailed description of the invention] The present invention relates to an intermediate support device for a roller pipe in a roll screen that winds up and stores a so-called roll-type screen. This was proposed in order to prevent it from curving downward at approximately the center in its longitudinal direction due to its own weight and external force.

Roll-type screens have a structure in which both longitudinal ends of the roller pipe that is used to roll and store the screen are supported by a pair of brackets, so the roller pipe is
In other words, as the screen becomes longer, beyond a certain limit of static deflection determined by its section modulus, area moment of inertia, and Young's modulus specific to the material, or a certain limit of deflection due to load, the screen becomes wider. There is an inconvenience that approximately the center in the longitudinal direction bends under its own weight and curves downward.

It is easy to imagine that this may cause the screen to become distorted, making it extremely unsightly, and causing various defects such as unbalanced loads on the brackets at both ends.

0 In addition, even if the length of the roller pipe is considered appropriate in terms of its cross-sectional performance, material bending stiffness, or load, it is safe from anticipated accidents such as people hanging from it. Therefore, measures are required to prevent the deflection of the roller pipe from exceeding a certain limit.

The present invention was devised in view of the problem of slanting, and its purpose is to prevent deflection of the roller pipe by supporting it from below at an appropriate position in the longitudinal direction of the roller pipe that winds up the screen. To provide an intermediate support device for a roller pipe for a roll screen, which maintains its linearity and thereby enables the screen to be properly stretched.

That is, the gist is that it has an upper arm and a lower arm that clamp a part of the outer peripheral surface of a roller pipe that winds up a roll screen, and the upper arm is elastically biased in the axial direction of the roller pipe. The lower arm is elastically biased in the axial direction of the roller pipe with a greater force than the upper arm.
Both arms are elastically movable, and an appropriate number of rollers are formed in the portions of both arms that contact the outer peripheral surface of the roller pipe in parallel with the axis of the roller pipe. .

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

In the figure, an arm holder 2 fixed to an intermediate support bracket 1 attached to a wall surface W or a ceiling surface C has a channel shape with a U-shaped cross section, and side plates 3 are arranged facing each other.
, 4, an arm shaft 5 passes through them.

Round bar-shaped stoppers 6.7 are protruded from the upper ends of the opposing surfaces of the side plates 3 and 4 to face each other and collide with the upper arm 12, which will be described later, to prevent it from swinging. At the lower ends of the outer surfaces of the side plates 3 and 4, round bar-shaped stoppers 8 and 9 that abut against a lower arm 25, which will be described later, are provided to protrude in opposite directions, respectively.

In addition, a screw 10 for hooking one end of the spring 20.37 wound around the arm shaft 5 is screwed around the through hole of the side plates 3, 4 through which the arm shaft 5 passes. There are several screw holes 10a.

A large number of screw holes (not shown) are formed in the bottom plate 11 of the arm holder 2, and when screwing it onto the bracket 1, the distance from the wall W or ceiling C can be freely adjusted. be.

An upper arm 12 is attached to the inside of the arm holder 2.

The upper arm 12 is pivotally supported by an arm shaft 5, and includes an upper support plate 13, upper leg pieces 14 and 15 hanging from both ends of the lower surface of the upper support plate 13, and the center and tip of the lower surface of the upper support plate 13. The upper leg piece 1 has an upper roller 18.19 pivotally supported at 16.17 (near the roller shirt).
An arm shaft 5 passes freely through the lower ends of the upper arms 4 and 15, making the upper arm 12 swingable.

In addition, an appropriate number of screw holes 21 a for screwing in screws 21 for hooking one end of the spring 20 wound around the arm shaft 5 are bored in the vicinity of the pivot points of the upper leg pieces 14 and 15. Intense ear pieces 22 and 23 are connected in series.

One end of the spring 20 is hooked to the screw 21 screwed to the ear pieces 22, 23, and the other end of the spring 20 is hooked to the screw 10 screwed to the side plates 3, 4 of the arm holder 2, as described above. Due to the relatively small torsional spring force possessed by the spring 20, the upper leg pieces 14, 1 in FIG.
5 is biased to swing clockwise.

That is, the upper arm 12 always tends to swing downward, and the upper leg pieces 14, 15 abut against the stopper 6.7, thereby preventing the upper arm 12 from swinging.

Note that the upper rollers 18 and 19 need to be arranged parallel to the axes of the arm shaft 5 and the roller pipe P held between the upper arm 12 and the lower arm 25, which will be described later.

Further, a roller-shaped separator 24 is fitted in the center of the arm shaft 5 in the longitudinal direction, and this separator 2
4 prevents the upper arm 12 from moving in the axial direction of the arm shaft 5.

a lower arm 2 formed on the outside of the arm holder 2;
5 is pivotally supported by an arm shaft 5 and is swingable.

The lower arm 25 has substantially the same structure as the upper arm 12, and includes a lower roller 26, 27 that presses and supports the outer peripheral surface of the screen S wound around the roller pipe P, and its roller shaft 28, 29, these 26, 27, 28.2
The lower support plate 30 has a wide lower support plate 30 having an upper surface of the lower support plate 30, and lower leg pieces 31, 32 which are erected at both ends of the upper surface of the lower support plate 30, and through which the arm shaft 5 passes freely.

An appropriate number of screw holes 33 are provided near the pivot points of the lower leg pieces 31 and 32.
A large torsion bullet wound around the arm shaft 5 is installed in the respective gaps between the side plates 3, 4 of the arm holder 2 and the lower leg pieces 31, 32. One end of the spring 36 capable of retaining force is connected to the ear piece 34,
35 screw holes 33a.

The other end of this spring 36 is connected to the side plate 3 of the arm holder 2.
, 4, and the lower arm 25 is fixed to the upper arm 12 by its torsional spring force.
It will be urged upward with a stronger force than the above.

In FIG. 2, the lower leg piece 31 is biased counterclockwise and swings.
, 32 are prevented from swinging by hitting the stopper 8.9.

The lower rollers 26, 27 are similar to the upper roller 18°1.
9 supports the roller pipe P from below, and its axis is aligned with the roller pipe P and the arm shaft 5.
parallel to the axis of

In this way, the roller pipe P that winds up the screen S is pushed up from below by the lower arm 25 and supported from above by the upper arm 12, so that its approximate center in the longitudinal direction is straight without being bent by its own weight. This makes it possible to arrange them in a specific manner.

As shown in phantom in FIG.
．． 19 and lower rollers 26 and 27, respectively, and pass rubber bells) D to both sides of the screen S, which are wound up.
It is also possible to support each other over a wide range of outer peripheral surfaces.

In addition, in this embodiment, the lower end of the spring 20.36 is hooked to the screw 10 screwed onto the side plates 3, 4 of the arm holder 2; however, the present invention is not limited to this. It is also possible to use the spring 36 by hooking one end to the stopper 6.7 and one end of the spring 36 to the stopper 8.9.

In particular, one end of the spring 20 that biases the upper arm 12 may be simply placed on the bottom plate 11 of the arm holder 2 and latched thereto.

If the lower support plate 30 is made wider and the lower rollers 26.27 are made longer than the upper rollers 18.19 (see FIG. 1), the load supporting area is wide, and the lower arm 25 by the spring 36 Together with the biasing force, the roller pipe P can be stably supported.

Although FIG. 3 shows a case in which one intermediate support device of the present invention is used, it will be even more effective if it is attached to a hollow part in the middle depending on the length of the roller pipe P.

Furthermore, a screw 10 for hooking the end of the spring 20.36 is provided.
．． Screw holes 10a, 21a into which 21.33 are screwed
, 33a are formed on the side plates 3, 4, the ears 22, 23, and the ears 34, 35, respectively, so that the spring 20
．． Since the latching position of the end portion of the roller pipe P can be freely selected, the torsional spring force thereof can be appropriately adjusted to provide an optimal support state according to the deflection of the roller pipe P.

Therefore, according to the present invention, both the upper arm 12 and the lower arm 25 that sandwich the roller pipe P are biased by elastic force in the axial direction of the roller pipe P, and in particular, the lower arm 25
Since the torsional elastic force of the spring 36 that biases the roller pipe P is increased, the roller pipe P can be strongly supported from below, and this device can be mounted approximately in the longitudinal center of the roller pipe P or in the vicinity thereof in an appropriate number. By installing it temporarily, there is no risk that the roller pipe P will bend due to its own weight, its linearity will be maintained, and the screen S can be stretched flat and normally.

In addition, because the upper arm 12 and lower arm 25 are always biased in the direction of the axis of the roller pipe P, if the diameter of the object held by both arms 12.25 changes due to unwinding or winding up of the screen S. But both arms 12.
25 is in close contact with the outer circumferential surface of the roller pipe P or the wound screen S, so that the screen S does not loosen and can be unwound and wound up in a tensioned state.

Additionally, upper rollers 18.19 are mounted on both arms 12.25.
and lower rollers 26 and 27, the rotation of the roller pipe P becomes extremely smooth, and the drawer,
It has the advantage that the winding operation can be performed smoothly.

In addition, since the middle of the roller pipe P can be strongly supported, the load is almost uniform over the entire length of the roller pipe P, and the load at both ends is reduced, so that the load is biased toward the brackets l-B that support both ends of the roller pipe P. There is no need to worry about applying a load.

As described above, the present invention supports the roller pipe by attaching it to an appropriate position in the longitudinal direction of the pipe and supporting it from below and above.
The roller pipe can be arranged in a straight line so that the screen can be properly stretched, and it has various practical effects such as a simple structure and good mass productivity.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. 3 is a partially omitted front view in a state of use. be. 1...Bracket, 2...Arm holder, 3゜4...Side plate, 5...Arm shirt), 6.7... Stopper, 8, 9...
... Stopper, 10... Screw, 10a.
...Screw hole, 11...Bottom plate, 12...
... Upper arm, 13 ... Upper support plate, 14
．． 15... Upper leg piece, 16.17...
Roller shaft, 18, 19... Upper roller, 20... Spring, 21... Screw, 21a... Screw hole, 22.23...・
・Ear piece, 24...Separator, 25...
・Lower arm, 26°27・・・Lower roller,
28.29...Roller shaft, 30...
... lower support plate, 31.32 ... lower leg piece,
33...screw, 33a...screw hole, 3
4.35...Ear piece, 36...Spring, B...Bracket, C...Ceiling surface, P...Roller belt, S: Screen, W: Wall, D: Belt.

Claims (1)

[Scope of utility model registration request] It has an upper arm and a lower arm that clamp a part of the outer peripheral surface of the roller pipe that winds up the roll screen, the upper arm is elastically biased in the axial direction of the roller pipe, and the lower arm is biased more than the upper arm. The roller pipe is elastically biased in the axial direction with a large force, making both arms elastically movable. An intermediate support device for a roller pipe for a roll screen, characterized in that an appropriate number of rollers are formed parallel to the center.