KR200143468Y1 - A roll screen device - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

Roll screen device

2. The technical problem to be solved by the invention

An object of the present invention is to provide a roll screen device having a roll drive mechanism that can operate effectively regardless of the installation location and the pulling angle of the ball chain.

3. Summary of solution of design

A roll drive mechanism having a predetermined length having one end fixed to the support means on one side; A gear cover having a cylindrical shape having one side in which a hole through which the support shaft passes is formed, and an outer circumferential surface thereof cut in a predetermined width to form an opening, the gear cover being rotatably supported by the support shaft through the hole; An outer circumferential surface having a predetermined width cut open and a gear body integrally formed on one side of the cylindrical portion in a coaxial line, the gear body being rotatably supported on the support shaft; And a side surface having a hole having a predetermined diameter in the center portion, and a plurality of slits having a predetermined width are formed in the longitudinal direction on the outer circumferential surface thereof, respectively, and inserted into the cylindrical portion such that the protruding end of the spring member is positioned in each adjacent slit. Providing a roll screen device comprising a spring cover rotatably supported.

4. Important uses of the devise

It is applied to a roll screen device that installs and removes a roll screen such as a sun visor or a decorative film, which effectively operates regardless of the installation location and the user's operating position, has an improved operating efficiency, and provides a roll driving mechanism with a simpler configuration. It works.

Description

Roll screen device

The present invention relates to a roll screen device, and more particularly, to a roll screen device capable of freely operating a roll screen drive mechanism for rolling up and rolling down a roll screen.

In general, the roll screen device is installed in the upper part of the window frame, the wall, and the ceiling, and by rotating the roll drive mechanism of the device by pulling a connecting member such as a ball chain in one direction or the other direction, the windscreen or decorative film is rolled up or stretched. It will open up. In the related art, various apparatuses in the above manner have been developed and commercialized, and one of the conventional apparatuses will be briefly described with reference to Figs. 1A to 1C.

As shown in Fig. 1A, the conventional roll screen device is a mounting table 1 mounted on a wall or a window frame and fixed to both sides of the mounting table to support a roll to be described later. (2, 2 '), a roll (3) (rotating rod) that rotates in the forward or reverse direction by the rotation of the roll drive mechanism to be described later, and rolls up or unrolls the roll screen attached to its outer periphery, and one end of the roll (3). And a roll drive mechanism 4 inserted and fixed at the other end and fixed to the support 2 ', the roll drive mechanism 4 extending vertically from the center portion, as shown in Fig. 1B. The support plate 5, which is formed integrally with a rotating shaft (5a) is formed integrally with a fixing means (not shown) for being inserted into and fixed to the mounting groove (2a) of the support (2 '), the predetermined portion Cylindrical shape in which the outer surface of the cylinder is cut out Both ends of the chain gear 6 are integrally formed and inserted into the rotation shaft of the support plate 5 so as to be rotatably supported, a ball chain 7 hooked to the chain gear, and a coil spring. A stop spring 8 which is protruded in length and is inserted into a rotation shaft supporting the chain gear 6, and a protrusion (not shown) formed integrally in the longitudinal direction in a cup-shaped structure therein is a rotation shaft 5a '. A spring cover 9 which is rotatably supported by inserting a cylindrical portion of the chain gear so as to pass between the two protruding ends of the stop spring 8 mounted at the lower portion thereof, and a lower portion thereof being cut out to form an entrance and exit of the ball chain, and a central portion thereof. It is formed of a hole through which the spring cover passes, and is composed of a chain gear (6) and a gear cover (10) covering the spring cover (9) rotatably assembled to the rotary shaft (5a '). The conventional roll drive mechanism 4 constructed as described above is shown in Fig. 1C.

Accordingly, when the ball chain is pulled and moved in the direction of the arrow shown in the drawing, the spring cover 9 rotates in the direction of the arrow shown, whereby the roll 3 having one end fixed by the end of the spring cover rotates. The roll screen is rolled up. On the contrary, when the pulling direction of the ball chain is reversed, the roll screen is released. Here, the stop spring (8) is capable of transmitting power from the chain gear (6) to the spring cover (9), but acts so as not to facilitate the transmission of power in the reverse direction, there will be a pulling movement of the ball chain (7). Only when the roll 3 will rotate.

However, the conventional roll screen device has the inconvenience of changing the angle at which the roll drive mechanism 4 is fixed to the support 2 'according to the installation place of the indoor ceiling, the wall, the window frame and the like. In other words, the roll drive mechanism 4 is inserted into and mounted in the fixing groove 2a (octagonal through groove) of the support 2 'by fixing means (not shown) formed on the rear surface of the supporting plate 5 and Since the gear cover 10 is fixed to the support plate 5, the ball chain 7 entrance and exit of the gear cover 10 is fixed in one direction. Therefore, if the installation location of the roll screen device is changed (for example, from the ceiling installation to the wall installation), correspondingly, the roll drive mechanism 4 so that the entrance and exit of the ball chain 7 always faces downward. ) Should be newly mounted on the support (2 ') by changing the mounting angle. In addition, since the ball chain 7 entrance and exit of the gear cover 10 is always fixed downward, when the ball chain 7 is pulled obliquely at a predetermined angle, the ball chain 7 is driven by the gear cover 10. The pulling operation becomes difficult by bending. Therefore, there is a problem that the user must pull the ball chain 7 under the roll drive mechanism 4 in order to easily drive the device.

Therefore, the present invention devised to solve the above problems is an object of the present invention is to provide a roll screen device with a roll drive mechanism that can operate effectively regardless of the installation location and the user's operation position.

1A is a perspective view showing the overall configuration of a roll screen device;

1B is an exploded assembly view showing a roll drive mechanism in the roll screen device according to the prior art;

Fig. 1C is a perspective view showing the state in which the roll drive mechanism of Fig. 1B is mounted on the support;

Figure 2 is an exploded assembly view showing a roll drive mechanism in the roll screen device according to the present invention;

3 is a perspective view showing a state in which the roll drive mechanism of FIG. 2 is mounted;

4A to 4C are plan views showing the operation of the gear cover of the roll drive mechanism according to the pulling angle of the ball chain in FIG.

* Explanation of symbols for the main parts of the drawings

1: mounting bracket 2, 2 ', 21: support

2a: fixing groove 3: roll (rotary rod)

3a: inner projection 4, 20: roll drive mechanism

5: support plate 5a, 21a: support shaft

6, 23: gear body 6a, 23a: cylindrical portion

6b, 23b: chain gear 7, 26: ball chain

8, 24: stop spring 9, 25: spring cover

10, 22: gear cover 27: washer

28: screw

In order to achieve the above object, the present invention, a mounting rod, a rotary rod that is rolled around the roll screen, two supporting means mounted on both sides of the mounting rod to support the rotating rod, provided between one end and one side of the supporting rod of the rotating rod A roll screen device comprising a roll driving mechanism for rotating the rotating rod, the roll driving mechanism comprising: a support shaft having a predetermined length whose one end is fixed to the support means on one side; A gear cover having a cylindrical shape having one side in which a hole through which the support shaft passes is formed, and an outer circumferential surface thereof cut in a predetermined width to form an opening, the gear cover being rotatably supported by the support shaft through the hole; A cylindrical body having an outer circumferential surface of a predetermined width open and a chain gear integrally formed on one side of the cylindrical portion in the same axis, and rotatably supported by the support shaft; And a side surface having a hole having a predetermined diameter in the center portion, and a plurality of slits having a predetermined width are formed in the longitudinal direction on the outer circumferential surface thereof, respectively, and inserted into the cylindrical portion such that the protruding end of the spring member is positioned in each adjacent slit. It provides a roll screen device comprising a spring cover which is rotatably supported.

Hereinafter, a roll screen device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

The present invention is similar in configuration and operation to a conventional roll screen device except for a roll drive mechanism for driving a roll (rotary rod), and therefore, the description will mainly be given by the roll drive mechanism.

Figure 2 is an exploded assembly view showing a roll drive mechanism in the roll screen device according to the present invention, Figure 3 is a perspective view showing a state in which the roll drive mechanism of Figure 2 is stewed on the roll and the support, Figures 4A to 4C Figure 3 is a plan view showing the operation of the gear cover of the roll drive mechanism according to the pull angle of the ball chain. 2 and 3, reference numeral 1 denotes a mounting table, 3 a roll, 3a an inner protrusion, 20 a roll drive mechanism, 21 a support, 21a a support shaft, 21b an extension, 21c a screw hole, 22 Is gear cover, 22a is center hole, 22b is opening, 23 is gear body, 23a is cylindrical part, 23b is chain gear, 23c is disc, 24 is stop spring, 24a is protruding end, 25 is spring cover, 25a is slit 25b represents a through hole, 26 represents a ball chain, 27 represents a washer, and 28 represents a screw.

As shown in Fig. 2, the roll drive mechanism 20 according to the embodiment of the present invention has a support shaft 21a extending at a side thereof at one end (lower end in the drawing), and the other end ( In the drawing, the upper end portion is integrally formed with an extension portion 21b extending by a predetermined length in a direction in which the support shaft extends in parallel with the support shaft 21a, and the extension portion of the mounting table 1 (see FIG. 1). A support 21 inserted into and fixed to one end portion; A cylindrical shape having one side formed with a hole 22a having a predetermined size in the center, and an outer circumferential surface thereof is cut in a predetermined length to form an opening 22b, and a gear rotatably supported by the support shaft 21a through the hole. Cover 22; A disk 23c having a hole having a predetermined diameter in the center, a cylindrical portion 23a open by cutting an outer circumferential surface of a predetermined width from one side of the disk, and the chain gear 23b on the other side of the disk, on the same central axis line. It is formed and configured, the gear body 23 is inserted into the support shaft (21a) rotatably supported so that the chain gear and the disc is accommodated in the gear cover (23a); As a coil spring having a predetermined number of turns, both ends are bent by an outer predetermined length to form a protruding end 24a, and the protruding end 24a is formed between the cylindrical portion 23a of the gear body and the support shaft 21a. A stop spring 24 which springs out of the opening of the cylindrical portion 23a and is fitted to the support shaft 21a to respectively contact the cylindrical walls; On the outer circumferential surface, a plurality of slits 25a having a predetermined width are formed in a cylindrical shape in which one side is formed in the longitudinal direction at predetermined intervals, and the protruding end of the stop spring 24 is formed at each adjacent slit 25a. A spring cover 25 inserted into and supported by the cylindrical portion 23a such that 24a is inserted thereinto; And a ball chain 26 installed to engage the chain gear 23b and pass through the opening 22b in a space formed by the disc 23c and the gear cover 22 so as to rotate the gear body 23. It consists of. Further, by inserting a fastening means such as bolt 28 into the through hole 25b of the spring cover 25 through the washer 27 and fastening to the screw hole 21c formed on the end face of the support shaft 21a, The configurations of the roll drive mechanism 20 according to the present invention are assembled to limit the axial movement in the support shaft 21a.

As shown in FIG. 3, the roll driving mechanism 20 configured as described above is fixed to one side end of the mounting table 1 through the extension portion 21b of the support 21, and the inner surface of the roll 3. The one end of the roll 3 is supported by inserting the spring cover into the inside of the roll 3 so that the inner surface protrusion 3a formed in the longitudinal direction may be inserted into the slit of the spring cover 25.

Hereinafter, the operation of the roll drive mechanism according to the present invention.

When the ball chain 23 is pulled in the direction of the arrow shown in Fig. 3, the gear body 23 is rotated by the ball chain portion engaged with the chain gear 23b in the gear cover 22. At this time, the stop spring 24 is fitted to the support shaft 21a such that both protruding ends 24a thereof protrude out of the opening of the cylindrical portion 23a and come into contact with both cylindrical walls, respectively. 25 is inserted into and supported by the cylindrical portion 23a so that the protruding end 24a of the stop spring 24 is positioned in two adjacent slits 25a, respectively, so that the cylindrical portion of the rotating gear body 23 ( The opening cylindrical wall of 23a pushes and rotates the protruding end 24a of the stop spring 24 inserted into the support shaft 21a. At this time, since the protruding end 21 of the spring is pushed in the direction opposite to the winding direction, the stop spring 24, which is tightly fastened to the support shaft 21a by its own elastic force, is loosened to allow rotation. Since the protruding end 24a of the rotating spring is inserted into the slit 25a of the spring cover 25, the protruding end 24a of the rotating stop spring 24 pushes the slit 25a to the spring. The cover 25 is rotated. In addition, even when the ball chain 23 is pulled in the opposite direction to the arrow direction shown in Fig. 3, through the same process as described above, the motion of the ball chain 26 is transmitted to the rotational force of the spring cover 25. do. Accordingly, the roll 3 inserted and supported by the spring cover 25 rotates with the rotation of the spring cover 25 to roll up the roll screen on its outer circumference, or unroll and roll the roll screen from its outer circumference. .

Here, the stop spring 24 allows only power transfer from the ball chain 26 to the spring cover 25, as described above, and power transfer from the spring cover 25 to the ball chain 26 side, which is the opposite. It serves to suppress the. Therefore, rotation of the roll 3 by the weight of the roll screen wound around the roll 3 is prevented. In other words, when the roll 3 is about to rotate due to the self-weight of the roll screen, the spring cover 25 inserted into the roll 3 causes the protruding end 24a of the spring 24 fitted into its slit 25a. Since it is pushed in the winding direction, the stop spring 24 tightens the support shaft 21a more strongly, thereby suppressing the rotation of the stop spring 24. Thus, reverse power transmission from the roll 3 to the ball chain 26 is interrupted.

Hereinafter, the function of the gear cover 22 which is an important feature of the roll drive mechanism according to the present invention will be described. 4A to 4C show the operation of the gear cover according to the ball chain pulling angle when the roll screen device is installed on the ceiling.

Unlike the prior art, the gear cover 22 in the roll drive mechanism 20 according to the present invention has a chain together with the gear body 23 to prevent the ball chain 26 from being separated from the chain gear 23b. It covers and protects the gear 23b and at the same time allows a wide range of pull angles of the ball chain 26.

Since the gear cover 22 which covers and protects the chain gear 23 is rotatably supported by the support shaft of the support 21a, the opening 22b of the gear cover 22 always has the pulling direction of the ball chain 26. To face. 4A shows that when the ball chain 26 is pulled downward, the opening 22b of the gear cover 22 faces downward. In the state of Fig. 4A, when the ball chain 26 is pulled at a predetermined angle, as shown in Figs. 4B and 4C, the gear cover 22 rotates and its opening 22b of the ball chain 7 Facing the pull direction. Therefore, the problem that the ball chain 7 pulled at a predetermined angle in the prior art is bent at one side of the opening of the gear cover 10 can not be easily pulled out.

In addition, even when the roll screen device is installed on the wall rather than the ceiling, as described above, the opening portion 22b of the gear cover 22 always faces the pulling direction of the ball chain 7. Therefore, unlike the conventional case in which the mounting angle of the roll driving mechanism is to be changed according to the installation position of the roll screen device, even if installed in any one of the ceiling or the wall, it can be used as it is without a separate driving mechanism mounting angle changing operation.

In addition, unlike the prior art, in which the user must pull the ball chain 26 directly under the roll screen device, it allows for a more free position for the user's operation.

The present invention described above is possible to those skilled in the art to which the present invention belongs, various substitutions, modifications and changes can be made within the scope without departing from the technical spirit of the present invention described above and the accompanying drawings It is not limited to.

According to the present invention configured as described above, regardless of the installation angle of the roll screen device and the pulling angle of the ball chain of the user has an improved operating efficiency that is effectively operated and there is an effect of providing a roll drive mechanism of a simpler configuration.

Claims (3)

Mounting rod, a rotary rod which is a hollow body to which the roll screen is wound, two supporting means mounted on both sides of the mounting rod to support the rotating rod, and a roll driving mechanism provided between one end of the rotating rod and one supporting means to rotate the rotating rod. In the roll screen device comprising: The roll drive mechanism A support shaft of a predetermined length whose one end is fixed to the support means on one side; A gear cover having a cylindrical shape having one side in which a hole through which the support shaft passes is formed, and an outer circumferential surface thereof cut in a predetermined width to form an opening, the gear cover being rotatably supported by the support shaft through the hole; An outer circumferential surface having a predetermined width cut open and a gear body integrally formed on one side of the cylindrical portion in a coaxial line, the gear body being rotatably supported on the support shaft; And It has one side surface formed with a hole of a predetermined diameter in the center, and a plurality of slits of a predetermined width are formed in the longitudinal direction on the outer peripheral surface thereof, and inserted into the cylindrical portion such that the protruding end of the spring member is located in each adjacent slit, respectively. Roll screen device comprising a spring cover rotatably supported. The method of claim 1, The support shaft is a roll screen device, characterized in that formed integrally with the support means of one side to extend at a right angle from the side of the support means of one side. The method of claim 1, The rotating rod is formed in the longitudinal direction of the inner projection projecting inwardly; One end of the rotating rod is supported by a roll drive mechanism by inserting the spring cover therein so that the projection is fitted into one slit of the spring cover.