JPH0967987A - Low noise roll screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To damp the rotation of a takeup roller rotating on the ascending and descending motion of a screen by applying the constitution that a damper with a viscous member is laid between the takeup roller and the stationary side. SOLUTION: When a screen 16 wound around a takeup roller 9 is pulled down, the outer cylinder part 42 of a damper 42 to be caught by the projections 15 of the takeup roller 9, and the collar, the lock center color and the like thereof rotate, and the rotation of the outer cylinder part 42 is transmitted to an inner cylinder part 37 via grease 46 as an intermediate inclusion. As a result, the inner cylinder part 37 rotates at a lower speed than the outer cylinder part 42. Also, as the grease 46 is a viscous material, an impact on the outer cylinder 42 is damped and smooth rotation is thereby transmitted. This type of deceleration and damping causes a drop in descending speed and reduces the occurrence of a noise. On the other hand, the screen 10, when released from a pulling force, automatically ascends, due to a spring reaction force accumulated between a brake joint and a spring joint and is, then, released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll screen provided in a defined place in a building, a window or the like, and more particularly to a low noise roll screen suitable for reducing noise generated when the screen moves up and down.

[0002]

2. Description of the Related Art Roll screens have been conventionally used for defining places, windows, etc. in buildings that require a blind function. This roll screen has a structure in which a blind-like screen wound around a take-up roller which is horizontally installed on the upper side is moved up and down by using a pulling tool or the like. The take-up roller is generally composed of an elongated hollow cylindrical body having a small diameter of 50 [mm] or less, and a mechanism section for automatically returning the drawn-out screen to the winding position is housed inside the take-up roller.

[0003]

Since the winding roller has a small diameter, the winding roller is rotated at a high speed when the screen is moved up and down. Therefore, in the state as it is, the mechanism portion housed in the take-up roller rotates at a high speed, and troubles such as deterioration of durability and damage occur. Therefore, conventionally, a deceleration mechanism portion is provided between the take-up roller side and the mechanism portion. This deceleration mechanism section often employs a planetary gear mechanism or the like because it needs to be housed in a take-up roller having a small diameter, and there is a problem that high noise is generated during operation.
Further, in the case of a mechanical deceleration mechanism, the ascending / descending speed of the screen is proportional to the pulling force of the pulling tool, so that the screen is likely to move up and down at a high speed, making it difficult to reduce noise.

The present invention was devised in view of the above circumstances, and it is possible to raise and lower the screen relatively slowly by a normal pulling force and to reduce the noise generated when the screen is raised and lowered. The purpose is to provide a noise screen.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has a head box that is horizontally installed above the installation location and a suspender that is hung and supported at both ends of the head box. A take-up roller that is supported, a screen that is wound around the take-up roller and moves up and down, and a hanging side that is housed in the take-up roller and rotates simultaneously with the take-up roller and an immovable side. And an elastic damping mechanism section interposed between the outer cylindrical section and the viscous member, wherein the elastic damping mechanism section rotates simultaneously with the winding roller side. A low noise roll screen is constituted by a damper having an inner cylinder portion inserted into and attached to the damper, and a spring member interposed between the inner cylinder portion of the damper and the stationary side. In addition, more specifically, in the engagement portion between the outer cylinder portion and the inner cylinder portion of the damper, a minute void portion is formed that is sealed between O-rings arranged to face each other,
The minute void is filled with grease, which is one of the viscous members.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a low noise roll screen according to the present invention will be described in detail below with reference to the drawings. First, an outline of the overall structure of the low noise roll screen 1 of the present invention will be described with reference to FIG. A head box 6 is laid horizontally above the immovable side 5 of a building or the like, and suspenders 7 and 8 are suspended from both side ends of the head box 6. The hollow cylindrical winding roller 9 having a relatively small diameter and elongated shape is horizontally arranged with its both ends supported by suspenders 7 and 8. The blind-shaped screen 10 has its upper end fixed to the take-up roller 9 side and its lower end fixed to the weight bar 11 and is wound around the take-up roller 9 during storage. The screen 10 is pulled out by pulling down the pulling tool 12 connected to the weight bar 11, and the screen 10 is fixed at an arbitrary pulling position by the lock mechanism portion 13 provided on the hanging tool 7 side. Screen 1
The rewinding of 0 is automatically performed by releasing the lock of the lock mechanism portion 13 by the pulling tool 12. The elastic damping mechanism 2 is housed inside the winding roller 9. The elastic damping mechanism portion 2 is roughly divided into a damper 3, a spring member 4, and the like, and serves to attenuate the winding roller 9 and reduce noise generated when the winding roller 9 rotates.
Automatically rewinds the screen 10 and the screen 10.
It functions to alleviate the impact force that occurs when moving up and down. The detailed structure of each component will be described below.

First, the take-up roller 9 will be described with reference to FIGS. The take-up roller 9 is made of a slender hollow cylindrical body having a relatively small diameter and is made of a light alloy such as aluminum. As shown in FIG. 6, a concave groove inlet portion 14, a concave groove deep portion 14a continuous to the concave groove inlet portion, and four protruding pieces 15 are formed in the sectional shape. These are the take-up rollers 9
Is formed along the longitudinal direction of. The concave groove inlet portion 14 and the concave groove inner portion 14a are for fixing the upper end portion of the screen 10. That is, the folding portion 16 is formed at the upper end portion of the screen 10 and is accommodated in the recess groove inner portion 14 a from the recess groove inlet portion 14. The upper end of the screen 10 is securely fixed to the take-up roller 9 by preventing the folding part 16 housed in the recessed part 14a from protruding by the vinyl tape 17 or the like.

Next, referring to FIG. 2, a general structure of the elastic damping mechanism portion 2 housed in the winding roller 9 and a structure around the suspenders 7 and 8 will be described. The elastic damping mechanism section 2 is for explaining the outline of its function, and the actual structure of each constituent section has a complicated structure different from that shown in the drawing. Both ends of the center shaft 18 are supported by a brake joint 19 and a spring joint 20,
The spring member 4 is connected between the joints 19 and 20. The joints 19 and 20 and the spring member 4 are covered with a protective cylinder 21, and both ends of the protective cylinder 21 are supported by a collar 22 and a collar 23. The colors 22 and 2
3 is engaged with the projection piece 15 on the inner circumference of the winding roller 9 and is fixed to the winding roller 9 side.

The spring joint 20 is fitted in the fitting hole 24 of the lock center 25, and the lock center 25 is covered by a lock center collar 26. Lock center 2
An engagement hole 27 is formed at the open end of the No. 5. The lock center collar 26 is formed of a reduced diameter portion 28 that is fixed to the take-up roller 9 by being fixed to the projection piece 15 of the take-up roller 9 and an enlarged diameter portion 29 having the same outer diameter as the take-up roller 9. To be done.
On the other hand, as will be described later in detail, the brake joint 19 and the collar 22 are connected to the damper 3 side.

On the hanging tool 7 side of the take-up roller 9, the enlarged diameter portion 29 of the lock center collar 26 is arranged in close proximity, and on the hanging tool 8 side, the protruding piece 15 of the take-up roller 9 is engaged. A supporting bush 30 that is firmly held by the winding roller is inserted and arranged in the winding roller. A support shaft 31 is fitted on the support bush 30.

The hanger 7 includes an L-shaped bracket 32,
The lock mechanism portion 13 and the like incorporated therein are provided. Although a detailed description of the structure of the lock mechanism portion 13 is omitted, the screen 10 that is moving up and down, including a control shaft 33 that fits into the engagement hole 27 of the lock center 25, a spring member 34 that is fixedly held on the bracket 32 side, and the like is optional. It has the function of locking at the position. On the other hand, the hanger 8 is an L-shaped bracket 35.
And a support portion 36 that is inserted into the support shaft 31 and supports the support shaft 31 is integrally formed. Further, the brackets 32 and 35 of the suspenders 7 and 8 are the head box 6 shown in FIG.
It is inserted into both ends of and is hung and supported.

Next, the damper 3 will be described with reference to FIGS. The inner cylindrical portion 37 includes reduced diameter portions 38 and 39 on both end sides and an enlarged diameter portion 40 formed by bulging in the middle thereof, and a spring member 4a is provided on the outer periphery of the reduced diameter portion 39 on one side. It is wound. Further, a locking portion 41 protruding in the radial direction is formed at the winding end of the spring member 4a. On the other hand, the outer tubular portion 42 is the inner tubular portion 3
7 is an annular member that is inserted and attached to the enlarged diameter portion 40. In addition,
A minute void portion 44 having a groove 43 is formed at a contact portion between the inner surface of the outer tubular portion 42 and the outer circumference of the inner tubular portion 37. The minute void portion 44 is formed in a closed space by a pair of O-rings 45, 45. Further, the minute void portion 44 is filled with grease 46 which is one of the viscous members. As shown in FIG. 3, a slit 47 is formed on the outer peripheral side of the outer tubular portion 42, and a protrusion 48 is formed on the side surface thereof as shown in FIG. The slit 47 is a groove into which the projecting piece 15 of the winding roller 9 is fitted, and the engagement of the slit 47 and the projecting piece 15 causes the outer cylinder portion 42 to be firmly held in the winding roller 9. Further, the protruding portion 48 connects the damper 3 and the collar 22 as shown in FIG. The reduced diameter portion 39 is the spring member 4a.
Fits into the brake joint 19 together with the spring member 4
The locking portion 41 of a is engaged with the brake joint 19 and connected to the brake joint 19.

Next, the low noise roll screen 1 of the present invention
The low noise function, elasticity function, speed reduction mechanism, etc., will be explained. The screen 1 wound on the take-up roller 9
When 0 is pulled down by the pulling tool 12, the take-up roller 9 rotates in proportion to the expansion of the screen 10. As shown in FIGS. 2, 3, 4 and 6, as the winding roller 9 rotates, the outer cylinder portion 42, the collars 22 and 23, and the lock center collar of the damper 3, which engages with the projecting piece 15 of the winding roller 9. 26 and others rotate. The outer tubular portion 42 and the inner tubular portion 37 of the damper 3
Is not mechanically connected, the rotation is transmitted through the intermediate grease 46. Therefore, the inner cylindrical portion 37
Is rotated at a speed slower than the rotation of the outer cylinder portion 42. Also,
Since the grease 46 is a viscous material, the impact force on the outer cylinder portion 42 side is attenuated and smooth rotation is transmitted. Due to the above deceleration and damping, the descending speed of the screen 10 is decelerated regardless of the same pulling down force as in the conventional case, and the generation of noise is reduced. On the other hand, when the inner tubular portion 37 rotates, the brake joint 19 connected to the inner tubular portion 37 via the spring member 4a that is wound around the inner tubular portion 37 rotates, and the spring member 4 is twisted.
As a result, a spring reaction force is accumulated between the brake joint 19 and the spring joint 20. Therefore, when the pulling down force of the screen 10 is released, the screen 10 is automatically raised by the spring reaction force and is wound around the take-up roller 9 to open the screen 10. The grease 46 of the damper 3 is filled in the minute voids 44, and the O-ring 4
Since it is prevented from scattering by 5,45, a sufficient damping force is secured for a long period of time. Further, since the spring member 4a and the spring member 4 also function as a cushioning material, a damping effect is produced and the noise is reduced.

Although the present invention has been described as applied to the roll screen having the internal structure shown in FIG. 2, it is also applied as a damper in the elastic damping mechanism portion in other roll screens having substantially the same mechanism as this. It Further, in the present invention, grease is used as the viscous member of the damper 3, but the present invention is not limited to this, and other oils and fats may be used.

[0015]

The low noise roll screen according to the present invention has the following remarkable effects. 1) By adopting a structure in which a damper having a viscous member interposed is interposed between the take-up roller and the stationary side, it is possible to damp the rotation of the take-up roller that rotates when the screen moves up and down. For this reason, the vertical movement speed of the screen becomes slower than in the conventional case, and noise generation is reduced. 2) By using a damper, impact energy is absorbed and noise can be reduced. 3) The damper has a relatively simple and compact structure in which the outer tubular portion and the inner tubular portion are connected with a viscous member interposed therebetween.
It can be stored in the winding roller. 4) By adopting a structure in which the damper and the spring member are connected, it is possible to further enhance the damping and sound reducing effects.

[Brief description of drawings]

FIG. 1 is a front view showing the overall structure of a low noise roll screen according to the present invention.

FIG. 2 is an axial sectional view showing a schematic structure around an elastic damping mechanism section and a winding roller in the present invention.

FIG. 3 is an axial sectional view showing a detailed structure of a damper of the elastic damping mechanism portion of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a front view of a winding roller according to the present invention.

6 is a cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

 1 Low Noise Roll Screen 2 Elastic Damping Mechanism 3 Damper 4 Spring Member 4a Spring Member 5 Immovable Side 6 Headbox 7 Lifting Tool 8 Lifting Tool 9 Winding Roller 10 Screen 11 Weight Bar 12 Pulling Tool 13 Locking Mechanism Section 14 Recessed Groove Entrance Part 14a Recessed groove 15 Protruding piece 16 Folding part 17 Vinyl tape 18 Center shaft 19 Brake joint 20 Spring joint 21 Protective cylinder 22 Color 23 Color 24 Fitting hole 25 Lock center 26 Lock center collar 27 Engagement hole 28 Reduced diameter part 29 diameter expansion part 30 support bush 31 support shaft 32 bracket 33 control shaft 34 spring member 35 bracket 36 support part 37 inner cylinder part 38 contraction part 39 contraction part 40 expansion part 41 locking part 42 outer cylinder part 43 groove 44 Micro void 45 O Ring 46 Grease 47 slit 48 protrusion

Claims (2)

[Claims] 1. A head box horizontally installed above an installation location, a take-up roller whose both ends are supported by hanging equipment hangingly supported at both ends thereof, and a take-up roller wound around the take-up roller. A roll screen having a vertically moving screen and an elastic damping mechanism portion housed in the winding roller and interposed between a rotating side that rotates simultaneously with the winding roller and the stationary side of the hanging tool. The elastic damping mechanism section includes a damper having an outer cylinder part that rotates simultaneously with the winding roller side and an inner cylinder part that is inserted into the outer cylinder part via a viscous member, and a damper of the damper. A low-noise roll screen, comprising a spring member interposed between an inner cylinder portion and the stationary side. 2. A minute gap portion, which is sealed between O-rings arranged opposite to each other, is formed at an engaging portion between the outer cylinder portion and the inner cylinder portion of the damper, and the minute gap portion is formed in the minute gap portion. The low noise roll screen according to claim 1, wherein grease, which is one of the viscous members, is filled.