JPH05321549A - Roll screen - Google Patents

Abstract

PURPOSE:To protect a visual field from interferences imposed by lowering a screen with a weight bar and spreading pull cords on a floor and the presence of pull cords. CONSTITUTION:A roll screen 10 provides a winding pipe whose ends are rotatively supported by a side plate 14 on both ends of set frame 12 and a screen 18 which is windable or releasable, being connected to the pipe on one end and a weight bar 20 installed to the other end and a pull handle 22 mounted in the central lower part and a winding mechanism 33 installed thereto and a pull cord 24. The winding mechanism 33 consists of a ring-shaped winding reel 30 having a cord winding section on its outer peripheral part. A slot section 34 is formed on the cord winding section 32 in its peripheral direction. One end of the pull cord 24 is connected thereto. This cord provides properties which are easy to wind up or release easily. The winding mechanism 33, which allows the winding reel 30 to be fitted into a space 29 formed in a pull handle main body 28 and supported, is mounted to the pull handle main body 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll screen.

[0002]

2. Description of the Related Art Among conventional roll screens, when pulling a pull cord to raise and lower the screen, when lowering the screen to the floor, first pull the pull cord and lower it until the weight bar or screen Hold the lower end of the and lower it until the weight bar touches the floor. This causes the screen to be completely lowered. Further, in the type in which the handle is provided on the weight bar, even if the weight bar and the screen are not provided during the descending, the handle can be held to the end to the floor.

[0003]

However, the conventional roll screen as described above has the following problems. In the case of the pull cord type, it is necessary to hold the weight bar and the lower end of the screen while lowering the screen, so the screen cloth provided on the weight bar and the lower end of the screen become dirty. When it is lowered, the pull cord spreads on the floor surface, so that it is stepped on, and when the screen is stopped halfway, the pull cord drops to the window surface and obstructs the field of view. In the case of the handle type, if the mounting position of the roll screen is high, there is a problem that the handle cannot be reached when the screen is completely wound up. The present invention aims to solve such problems.

[0004]

The present invention solves the above problem by attaching a pull bar capable of winding or unwinding a pull cord to a weight bar. That is, the roll screen of the present invention, a winding pipe whose both ends are rotatably supported by the side plates at both ends of the set frame,
One having a screen which is connected to the winding pipe at one end side thereof and which can be wound or unwound, and a weight bar which is provided at the other end of the screen. A pull cord is connected to the pull tab, and the pull tab is composed of a pull tab body and a winding mechanism capable of winding or unwinding the pull cord. The winding mechanism is constituted by, for example, a ring-shaped winding reel that is rotatably supported in a state in which a pulling body is provided with a frictional resistance that does not rotate due to the weight of the pull cord and that can be manually rotated. A cord winding portion is provided on the outer circumference of the pull cord to which one end of the pull cord is connected so that the pull cord can be wound or unwound. In addition, the winding mechanism is
For example, a take-up reel that is rotatably provided in the puller body and has a cord take-up section that is connected to the outer periphery and has one end of the pull cord that can be taken up or unwound, and the take-up reel is a pull cord. The take-up spring that biases the take-up direction and rotation of the take-up reel in the pull-cord unwinding direction are allowed, but rotation in the pull-cord take-up direction is blocked, and rotation of the take-up reel in both directions is allowed. And a one-way stop mechanism capable of switching between the ON state and the ON state.

[0005]

When the screen is lowered, it is lowered to a position where it can be lowered by holding the pull cord, and then the pull cord is wound into the pull tab and further lowered by holding the pull tab. As a result, it is not necessary to hold the weight bar and the lower end of the screen to lower them, so that the cloth for the weight bar and the screen are not contaminated. Further, when the screen is lowered to the floor, the pull cord can be wound in the pull tab, so that the pull cord does not spread on the floor. When the screen is rolled up, the length of the pull cord pulled out from the pull tab can be adjusted according to the height of the weight bar, so you can reach the pull cord and operate the roll screen regardless of the height of the weight bar. In addition, the pull cord does not drop on the window surface and obstruct the view.

[0006]

EXAMPLE FIG. 1 shows a roll screen 1 embodying the present invention.
Shows 0 as a whole. Side plates 1 are provided on both ends of a set frame 12 for attaching the roll screen 10 to the window frame.
4 are provided. A winding pipe 16 is rotatably supported on the side plate 14. Winding pipe 16
Is connected to one end of the screen 18 so that the screen 18 can be wound or unwound. The other end of the screen 18 is connected to the weight bar 20. A pull tab 22 is attached to the lower end of the central portion of the weight bar 20. One end of a pull cord 24 is connected to the pull tab 22 so that the pull cord 24 can be wound or unwound (see FIG. 2). A knob 26 is provided at the other end of the pull cord 24.

FIG. 3 shows an exploded perspective view of the pull tab 22. The pull tab 22 includes a pull tab body 28 and a winding mechanism 33 configured by a take-up reel 30. Take-up reel 3
0 is a ring shape having a through hole 31 in the center, and a cord winding section 32 is provided on the outer periphery of the ring.
The cord winding portion 32 is provided with a groove portion 34 in the circumferential direction, one end of the pull cord 24 is connected to the groove portion 34, and it can be wound and unwound. The pull tab body 28 is composed of two separable members. The handle body 28 in the assembled state has the take-up reel 30 inside.
Can be rotatably accommodated. Since the take-up reel 30 is provided with a small frictional resistance by the convex portion 28a provided on the lower portion of the puller body 28, the take-up reel 30 does not rotate due to the weight of the pull cord 24. However, the frictional resistance is such that the take-up reel 30 can be rotated by the force of a human finger. The pull tab body 28 is provided with a hole 29 corresponding to the through hole 31 of the take-up reel 30. On the upper portion of the pull tab body 28, a locking portion 36 is formed so as to project, and the pull tab 2 is inserted by being inserted into the weight bar 20 as described later.
2 is attached to the weight bar 20. Pull cord 2
In the case of No. 4, by manually rotating the take-up reel 30, the cord take-up unit 32 is rotated and is wound or unwound on the cord take-up unit 32.

FIG. 4 is a sectional view showing the relationship between the pull tab 22 and the weight bar 20. The weight bar 20 has a cylindrical shape, and an upper space 40 and a lower space 42 are formed by a partition plate 38 formed in the center of the cylinder in the longitudinal direction. An opening 44 extending in the longitudinal direction is provided on the upper portion of the weight bar 20. The lower end of the screen 18 is inserted and connected to the upper space 40 through the opening 44. A groove 46 is formed in the lower portion of the weight bar 20 in the longitudinal direction. A co-cloth 48 of the screen 18 is attached to the outer peripheral surface of the weight bar 20. In the lower space 42 of the weight bar 20, the pull tab support 52 is provided with the partition plate 3.
8 is positioned and inserted. The pull tab support 52 is a semi-cylindrical shape having a diameter substantially the same as the inner diameter of the weight bar 20, and an opening 50 is formed in the lower portion. Through the opening 50 of the pull tab support 52, the lower space 42
The locking portion 36 of the pull tab body 28 is inserted therein. The pull tab 22 is swingable with respect to the weight bar 20 around the locking portion 36.

Next, the operation of the roll screen 10 of this embodiment will be described. For example, when lowering the screen 18 which is completely wound around the winding pipe 16, first, the knob 26 of the pull cord 24 is pulled down. At this time, when the pull cord 24 is not completely unwound from the pull tab 22, the pull cord 24 is first unwound from the pull tab 22. After the pull cord 24 is completely unwound from the pull tab 22, the force of pulling the pull cord 24 becomes the force of pulling the weight bar 20, and the screen 18 is lowered. After the screen 18 is lowered to the position where it can be lowered by the pull cord 24, the through hole 31 of the take-up reel 30 of the pull tab 22
Insert the fingertip into the and rotate the take-up reel 30, and pull the pull cord 24 into the pull tab 22. Then, through hole 31
Hold the pull tab 22 with your hand on the weight bar 20
Down to the floor. Then, the roll screen 10
The screen 18 is fixed by a stopper (not shown) provided on the screen. When raising the screen 18, the pull bar 22 of the weight bar 20 is pulled to release the stopper of the roll screen 10. As a result, the winding pipe 16 is rotated in the winding direction of the screen 18 by the winding spring (not shown) provided on the winding pipe 16, so that the screen 18 moves upward. The pull cord 24 may be in a completely wound state or may be wound in a desired length. In order to keep the pull cord 24 unwound by a desired length when the roll screen 10 is mounted at a high position, the pull cord 24 should be held by hand when the screen 18 is raised, and the pull cord 24 should be held by hand. When 24 has reached the desired length, it can be released. When lowering the screen 18,
When the pull cord 24 is completely unwound from the pull tab 22 from the beginning, when the knob 26 is pulled down, this force is immediately transmitted to the weight bar 20 and the screen 18 is lowered.

FIG. 5 shows a second embodiment. Similar to the first embodiment, the pull bar 54 is attached to the weight bar 20. One end of a pull cord 56 is connected to the pull tab 54 so that the pull cord 56 can be wound and unwound. A knob 58 is provided on the other end of the pull cord 56. The structure inside the pull tab 54 is shown in FIG.
Shown in. The pull tab 54 includes a pull body 60 having a space 59 at a predetermined position, and a winding mechanism 61 housed in the pull body 60. The winding mechanism 61 includes a winding reel 62, a winding spring 78 (see FIG. 7), and a one-way stop mechanism 63. The take-up reel 62 has a disc shape, and a concave code take-up portion 68 is integrally formed on the outer peripheral portion of the take-up reel 62 (see FIG. 7). Cord winding section 68
Two projecting pieces 70 projecting in the radial direction with an interval of 180 degrees are integrally provided in the inner diameter portion of the. Protruding piece 7
0 has an end face 70a located on the radial line from the center of rotation of the take-up reel 62, and an end face 70b largely inclined with respect to the radial line. A stopper 64 is provided concentrically with the take-up reel 62. The stopper 64 is axially movable, as described later with reference to FIG. 7, but is connected to the pull tab body 60 so as not to rotate. A blocking piece 72 is provided on the outer diameter portion of the stopper 64 at a distance of 180 degrees so as to project in the radial direction.
The blocking piece 72 and the above-mentioned protruding piece 70 constitute a ratchet mechanism. That is, the protruding piece 70 is the end surface 70.
When hitting the blocking piece 72 from the a side (the take-up reel 62
Is rotated clockwise in FIG. 6), the protruding piece 70
Is prevented from moving, and the take-up reel 62 cannot rotate. On the other hand, the protruding piece 70 is provided with
In the case of hitting 2 (when the take-up reel 62 rotates counterclockwise in FIG. 6), since the end surface 70b is gently inclined, the projecting piece 70 has its own and blocking pieces 7.
By the elastic deformation of 2, the blocking piece 72 can be overcome. That is, the take-up reel 62 can rotate counterclockwise in FIG. At the center of the stopper 64,
A stopper release button 74 is formed so as to project in the axial direction. The stopper release button 74 projects outward from the side portion of the pull tab body 60 as shown in FIG. One end of the pull cord 56 is connected to the cord winding portion 68 of the winding reel 62, and the pull cord 56 can be wound and unwound on the cord winding portion 68 by rotating the winding reel 62.

FIG. 7 is a sectional view taken along line 7-7 of FIG. A cylindrical protrusion 76 is integrally formed on the pull tab body 60 inwardly of the pull tab body 60. The center portion of the take-up reel 62 is fitted to the outer diameter portion of the projecting portion 76, and the take-up reel 62 is rotatable around the outer circumference of the projecting portion 76. A winding spring 78 is provided between the inner diameter portion of the cord winding portion 68 and the outer diameter portion of the protruding portion 76 on the side opposite to the side on which the protruding piece 70 is provided with the winding reel 62 interposed therebetween. ing. A spiral spring is used as the winding spring 78, which constantly urges the winding reel 62 in the direction in which the pull cord 56 is wound. The above-mentioned stopper 64 is fitted to the outer diameter portion of the protruding portion 76 from the tip end side thereof. The stopper 64 is movable in the axial direction of the protruding portion 76, but is restrained in the rotation direction as described above. In the inner diameter portion of the protruding portion 76,
A stopper spring 80 is provided so as to be sandwiched between the pull tab body 60 and the stopper release button 74, and the stopper release button 74 is constantly pressed toward the outside of the pull tab body 60. As a result, the blocking piece 72 of the stopper 64 is always engaged with the protruding piece 70. The engagement between the blocking piece 72 and the protruding piece 70 causes the stopper release button 74 to move to the stopper spring 80.
It will come off when pushed inward against the pulling force of the pull body 60. This releases the stopper 64,
The take-up reel 62 is rotated by the force of the take-up spring 78 to wind the pull cord 56. The projecting piece 70, the blocking piece 72, the stopper release button 74, the stopper spring 80, and the like constitute the one-way stop mechanism 63. Figure 8
The attachment state of the pull tab 54 to the weight bar 20 is shown in FIG. The pull tab 54 is attached to the weight bar 20 as in the first embodiment, and is swingable with respect to the weight bar 20 around the locking portion 82 of the pull bar.

Next, the operation of the roll screen 10 will be described. For example, when lowering the screen 18 completely wound around the winding pipe 16, first, the knob 58 of the pull cord 56 is pulled down. When the pull cord 56 is not completely unwound from the pull tab 54, the pull cord 56 is first unwound from the pull tab 54. At this time, as described above, the projecting piece 70 of the take-up reel 62 rides over the blocking piece 72 of the stopper 64 and rotates. After the pull cord 56 is completely unwound from the pull tab 54, the pulling force of the pulling cord 56 becomes the pulling force of the weight bar 20, and the screen 18 is lowered. After the screen 18 is lowered to a position where it can be lowered by the pull cord 56, the stopper release button 74 is pressed to release the stopper 64,
The winding reel 62 is rotated by the force of the winding spring 78,
The pull cord 56 is wound around the cord winding portion 68. Thereby, the pull cord 56 is completely stored in the pull tab 54. Next, insert a hand into the space 59 of the pull tab 54
Hold and pull down the weight bar 20 to the floor. Next, the screen 18 is fixed by a stopper (not shown) provided on the roll screen 10. When raising the screen 18, the puller 22 of the weight bar 20 is pulled to release the stopper of the roll screen 10. As a result, the winding pipe 16 is rotated in the winding direction of the screen 18 by the winding spring (not shown) provided on the winding pipe 16, so that the screen 18 moves upward. The pull cord 56 may be in a completely wound state,
Further, it may be unwound by a desired length. If the mounting position of the roll screen 10 is high,
To keep the pull cord 56 unwound by a desired length, hold the knob 58 of the pull cord 56 by hand when the screen 18 is raised, and release it when the pull cord 56 reaches the desired length. Good. One-way stop mechanism 63
By this action, the pull cord 56 is held in a desired length. When lowering the screen 18,
When the pull cord 56 is completely unwound from the pull tab 54 from the beginning, when the knob 58 is pulled down, this force is immediately transmitted to the weight bar 20 and the screen 18 is lowered.

[0013]

By attaching a pull bar capable of winding or unwinding the pull cord to the weight bar, when the screen is lowered, the pull cord is lowered to a position where it can be lowered, and then the pull tab is pulled to pull the screen. It can be further lowered. As a result, it is not necessary to lower the screen by holding the lower end of the weight bar or the screen, so that the cloth for the weight bar and the screen are not soiled. When the weight bar is lowered to the floor surface, the pull cord can be wound into the pull tab, so that the pull cord does not spread on the floor surface and is not trampled or entangled with the foot. The length of the pull cord can be adjusted according to the height of the screen, so that the pull cord does not go down to the window surface and obstruct the view. Further, since the pull cord can be always reached, there is no restriction on the mounting height of the roll screen.

[Brief description of drawings]

FIG. 1 is a diagram showing a roll screen of the present invention.

FIG. 2 is a view in which a pull tab is attached to a weight bar.

FIG. 3 is an exploded perspective view of a pull tab.

FIG. 4 is a cross-sectional view showing a relationship between a pull tab and a weight bar.

FIG. 5 is a diagram showing a second embodiment of the present invention.

FIG. 6 is a view showing a structure inside a pull tab.

7 is a sectional view taken along line 7-7 of FIG.

FIG. 8 is a cross-sectional view showing a relationship between a pull tab and a weight bar.

[Explanation of symbols]

 10 roll screen 12 set frame 14 side plate 16 winding pipe 18 screen 20 weight bar 22, 60 puller 24, 56 pull cord 30, 62 winding reel 32, 68 cord winding unit 33, 61 winding mechanism 63 one-way stop mechanism 64 stopper 78 winding spring

Claims (3)

[Claims] 1. A take-up pipe whose both ends are rotatably supported by side plates at both ends of a set frame, a screen which has one end connected to the take-up pipe and which can be taken up or unwound, and a screen In a roll screen having a weight bar provided at the other end, a pull bar is attached to the weight bar at the lower center part of the weight bar, and a pull cord is connected to the pull bar.The pull tab has a pull bar body and a pull cord. A roll screen comprising: a winding mechanism capable of winding or unwinding. 2. The take-up mechanism is a ring-shaped take-up reel which is rotatably supported in a state in which a pull body has a frictional resistance that does not rotate under the weight of the pull cord and which can be manually rotated. 2. The roll screen according to claim 1, further comprising a cord winding portion that is connected to one end of the pull cord and is capable of winding or unwinding the pull cord. 3. A take-up reel, wherein the take-up mechanism is rotatably provided in a puller main body, and has a cord take-up portion which is connected to one end of an outer circumference of the pull cord and is capable of winding or unwinding the pull cord. And a winding spring that biases the take-up reel in the direction in which the pull cord is wound, and a state in which rotation of the take-up reel in the unwinding direction of the pull cord is permitted, but rotation in the pull cord winding direction is prevented, and A one-way stop mechanism that can switch the state of allowing rotation of the reel in both directions,
The roll screen according to claim 1, which comprises