JP2502614Y2 - Collision noise prevention device for roll blinds - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a collision noise prevention device for preventing collision noise due to collision between a bracket supporting a roller blind and a weight bar.

[Prior Art] In a roller blind, both ends of a winding shaft that suspends and supports a screen are rotatably supported by support brackets, and the support brackets are fixed to a ceiling surface or the like. The screen can be moved up and down by operating the operation cord hanging from one of the support brackets to rotate the winding shaft. In such a roller blind, when the screen is wound up to the upper limit, the weight bar suspended and supported on the lower edge of the screen collides with the support bracket and produces annoying collision sound. For this reason, a stopper formed of a flat rubber plate or the like is attached to the lower surface of the support bracket to prevent direct collision between the weight bar and the support bracket, thereby reducing noise.

[Problems to be solved by the invention] However, even if the screen is vigorously rolled up even with the roll blinds having the above countermeasures, the weight bar violently collides with the outer peripheral surface of the take-up shaft and then jumps upward due to the repulsive force. However, there is a problem that an unpleasant collision sound is generated by collision with the ceiling surface or the side surface of the support bracket.

An object of the present invention is to provide a collision noise preventing device capable of reliably preventing noise caused by collision between a weight bar and another member when the screen is pulled up.

[Means for Solving the Problem] In order to solve the above problems, the present invention provides a support bracket that supports both ends of the screen winding shaft with stoppers that prevent collision between the mounting surface of the support bracket and the weight bar. In the roll bracket formed by the shock absorbing member, the stopper is arranged between the mounting surface of the support bracket and the take-up shaft, and the screen facing the take-up shaft of the stopper is taken up by the screen. Of the stopper, a beak-shaped projection is formed on one side of the stopper, and an inclined surface gradually distant from the winding shaft is provided on the other side.

[Operation] By the above means, the weight bar surely comes into contact with the stopper to reduce the occurrence of collision noise.

[Embodiment] An embodiment embodying the present invention will be described with reference to FIGS.
Description will be made with reference to the drawings.

In the roller blind shown in FIG. 3, a pair of support brackets 1 separately provided are fixed to the ceiling surface 2,
A winding shaft 3 is supported between the support brackets 1, and a screen 4 is suspended from and supported by the winding shaft 3. And
By operating the operation cord 5 suspended from one of the support brackets 1, the winding shaft 3 is rotated and the screen 4 can be moved up and down. A rubber stopper 6 is attached to each of the support brackets 1 so that the screen 4
Noise due to a collision between the weight bar 7 attached to the lower end and each bracket 1 is prevented.

The stopper 6 is attached to the support bracket 1, for example, by fitting a mounting piece 1a provided on the support bracket 1 into a mounting hole 8 horizontally provided in the central portion as shown in FIG. . The center of the mounting hole 8 coincides with the center of the stopper 6 in the front-rear direction, and the center of the mounting piece 1a is formed above the center of the winding shaft 3. The distance between the stopper 6 and the outer peripheral surface of the winding shaft 3 is set to be smaller than the diameter of the weight bar 7 when the screen 4 is wound up to the upper limit.

The lower surface of one end of the stopper 6 on the side where the screen 4 is suspended is curved along the outer peripheral surface of the winding shaft 3, and its tip is projected to a height almost equal to the upper edge of the winding shaft 3 to form a beak shape. The protrusion 9 is formed. Further, a slope 10 is formed at the other end of the stopper 6 so as to gradually move away from the winding shaft 3.

By the way, in the collision noise prevention device thus configured,
Even if the weight bar 7 collides with the screen 4 wound around the winding shaft 3 and bounces upward by violently winding up the screen 4 from the state shown in the figure, as shown in FIG. The weight bar 7 jumps up slightly by the portion 9 and collides with the stopper 6 almost silently. Therefore, it is possible to prevent the generation of noise due to the collision between the weight bar 7 and the ceiling surface 2 or the side surface of the support bracket 1.

The stopper 6 can also be used when the support bracket 1 is attached to the wall surface. That is, the stopper 6 is attached to the support bracket 1 in the front-rear direction and the slope 10 is located on the side where the screen 4 is suspended. In this state, the support bracket 1 is attached to the wall surface 11 as shown in FIG.

When the screen 4 is wound up to the upper limit in such a state, the weight bar 7 is stopped while being sandwiched between the screen 4 wound around the winding shaft 3 and the slope 10 of the stopper 6. Therefore, the collision between the weight bar 7 and the support bracket 1 is prevented, and the weight bar 7 can be brought into contact with the stopper 6 almost silently to prevent the generation of noise.

[Advantage of the Invention] As described in detail above, in the case where the roll blind is attached to the ceiling or the wall, the present invention saves the space of the roll blind and at the same time, the weight bar and other members are pulled up when the screen is pulled up. It has an excellent effect of reliably preventing noise caused by a collision.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a collision noise prevention device embodying the present invention, FIG. 2 is a vertical sectional view showing its action, and FIG. 3 is a front view of a roll blind equipped with the collision noise prevention device. Four
FIG. 1 is a vertical cross-sectional view showing a collision noise prevention device when a roll blind is attached to a wall. Support bracket 1, winding shaft 3, screen 4, stopper 6, weight bar 7, projection 9, slope 10.

Claims (1)

(57) [Scope of utility model registration request] 1. A roll blind comprising a support bracket for supporting both ends of a screen winding shaft and a stopper for preventing a collision between a mounting surface of the support bracket and a weight bar made of a shock absorbing member. It is arranged between the mounting surface of the bracket (1) and the winding shaft (3), and the surface of the stopper (6) facing the winding shaft (3) has the screen (4) attached to the winding shaft (3). The beaker has a shape along the outer peripheral surface in a wound state, and a beak-shaped protrusion (9) is formed on one side of the stopper (6), and gradually extends from the winding shaft (3) on the other side. Slope away (1
0) is provided, a collision noise prevention device for roll blinds.