KR100547287B1 - Drive Bracket for Roll Screen - Google Patents

Abstract

The present invention relates to a roll screen driving bracket which interacts with a driven bracket to rotate a rotating shaft on which a curtain cloth is wound, the first body part having a passage hole through which a chain passes, and protruding from a plate surface of the first body part. A fixed bracket portion having a shaft provided to be formed; A rotating bracket portion having a second body portion partially received in the first body portion, a cutout portion at a side thereof, and a shaft coupling portion extending from the second body portion and into which the shaft is inserted; A rotating member disposed between the fixed and rotating bracket portions to rotate by the chain; A deceleration transmission gear for transmitting the rotational motion of the rotating member to the rotational motion of the rotating bracket portion; A coupling bush fitted to the outside of the shaft coupling part and coupled to the rotating shaft; It is inserted into the outer side of the shaft and both ends are exposed to the cutout of the shaft coupling portion is characterized in that it comprises a plurality of restraining spring to allow the rotation of the rotating bracket portion, while preventing the independent rotation of the coupling bush. Thereby, even if the weight of the curtain cloth becomes relatively large, it is possible to stably move the curtain cloth by generating a stronger rotational torque by the operation of the chain.

Description

Driving Bracket for Roll Screen {Main-bracket for roll-screen}

1 is a perspective view of a roll screen according to the present invention,

Figure 2a is an exploded perspective view of the drive bracket mounted on the roll screen shown in Figure 1,

FIG. 2B is a view of FIG. 2A in a different direction;

3 is a partially cutaway cutaway view of FIGS. 2A and 2B;

4 is a plan view of the restraint spring,

5A to 5C are exemplary views of fitting grooves.

* Explanation of symbols for the main parts of the drawings

 1 frame 2 bracket fastener

10: drive bracket 20: fixed bracket portion

22: shaft 22a: hook portion

30: rotating bracket portion 32: shaft coupling portion

32a: cutting portion 40: rotating member

50: reduction gear transmission 51: the first sun gear

52: second sun gear 53: satellite gear

54: support shaft 60: coupling bush

62: hook engaging portion 63: rib

70: restraint spring

The present invention relates to a driving screen for a roll screen, and more particularly, for a roll screen for stably moving the curtain cloth by generating a stronger rotational torque by operating the chain even when the weight of the curtain cloth becomes relatively large. It relates to a drive bracket.

Curtains mounted on a window to selectively block light include opening and closing the window while moving in the horizontal direction and opening and closing the window while moving in the vertical direction. The former includes general curtains which are integrally manufactured with curtain cloth, and so-called vertical blinds which are separated by a plurality of curtain cloths along the vertical direction and connected by ropes.

And the latter are known as so-called line blinds, roman shades and roll screens. The line blind refers to opening and closing a window while moving up and down after several line layers rotatable in a fixed position are horizontally arranged and integrally connected to separate lines. In addition, the roman shade means that the lowermost curtain cloth is gradually rolled up and rolled upward.

In contrast, a roll screen includes a frame fixed to a ceiling, a driving and driven bracket disposed on both sides of the frame, a rotating shaft rotatably coupled to the driving and driven bracket, and the curtain cloth wound and unwound, and provided on the driving bracket. It consists of a chain that rotates the rotating shaft.

Thus, in a state where the roll screen is installed in front of the window or the like, when one side of the chain is pulled, the rotating shaft rotates and the curtain cloth is wound around the rotating shaft to open the window. On the contrary, when the other side of the chain is pulled, the rotating shaft rotates in the opposite direction as described above, thereby releasing the curtain cloth wound around the rotating shaft to shield the window again.

Such a roll screen is merely installed in relatively small windows in a house or a building. However, if the roll screen is to be mounted on a large flat apartment porch, it may not be aesthetically pleasing as several existing roll screens must be connected.

Accordingly, in the case of roll screen manufacturing companies, the frame and the rotating shaft are manufactured in accordance with a large flat apartment veranda, and the curtain cloth is also manufactured in a corresponding size and wound around the rotating shaft.

However, when manufacturing such a large roll screen, because the weight of the curtain cloth is relatively large as the area of the curtain cloth is expanded, it is difficult to raise or lower the curtain cloth with the existing drive bracket equipped with a chain. That is, when the weight of the curtain cloth is a lot of weight to generate a stronger rotational torque in the drive bracket, it is difficult to satisfy this with the existing drive bracket.

In addition, in the case of the existing drive bracket can pull the chain only in the direction in which the curtain cloth is stretched, there is a disadvantage that the chain is not easy to pull when the chain is concealed by furniture or other objects.

It is an object of the present invention to provide a roll bracket driving bracket which can stably move a curtain cloth by generating a stronger rotational torque by operating a chain even when the weight of the curtain cloth becomes relatively large.

Further, another object of the present invention is to provide a driving screen for a roll screen which enables the chain to be operated while easily changing the pull position of the chain.

The object of the present invention is a roll screen driving bracket for interacting with a driven bracket to rotate a rotating shaft around which a curtain cloth is wound, the first body portion having a passage through which a chain passes on one side, and the first body A fixing bracket portion having a shaft provided to protrude from the plate surface of the portion; A rotating bracket portion having a second body portion partially received in the first body portion, a cutout portion at a side thereof, and a shaft coupling portion extending from the second body portion and into which the shaft is inserted; A rotating member disposed between the fixed and rotating bracket portions to rotate by the chain; A deceleration transmission gear for transmitting the rotational motion of the rotating member to the rotational motion of the rotating bracket portion; A coupling bush fitted to the outside of the shaft coupling part and coupled to the rotating shaft; By a drive bracket for a roll screen inserted into the outside of the shaft and both ends are exposed to the cutout portion of the shaft coupling portion includes a plurality of restraining springs to allow rotation of the rotating bracket portion, but inhibits the independent rotation of the coupling bush. Is achieved.

Here, the exposed end of the shaft is formed with a fitting groove which is fitted to be adjustable in position with respect to the end of the predetermined bracket fixture fixed.

The deceleration transmission gear includes: a first sun gear formed along a circumferential direction of the inner surface of the rotating member; A second sun gear formed at an end of the shaft facing the first body part and having a diameter smaller than the first sun gear; A plurality of satellite gears disposed between the first and second sun gears; And a plurality of support shafts protruding from the second body plate surface of the rotating bracket portion to rotatably support the plurality of satellite gears.

The exposed end of the shaft is provided with a pair of hook portions that are mutually accessible and spaced apart, and a hook engaging portion is formed at an end portion of the coupling bush corresponding to the hook portion.

An outer end of the coupling bush is formed with a rib extending outward more than the hook portion held by the hook engaging portion.

The plate surface of the second body portion adjacent to the cutout portion is further cut radially outward so that an end portion of the restraint spring passes therethrough.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a roll screen according to the present invention. As shown in this figure, the roll screen according to the present invention includes a frame 1 fixed to the ceiling, driven and driven brackets 6 and 10 mounted on both sides of the frame 1, and driven and driven brackets. It consists of a rotating shaft 4 rotatably fitted between the 6 and 10 and a curtain cloth 5 wound and unwound on the rotating shaft 4.

Accordingly, when the chain 7 provided in the driving bracket 10 is pulled in one direction, the rotation shaft 4 is rotated by the gear train structure in the driving bracket 10 to be described later. At this time, the driven bracket 6 formed at the end of the rotating shaft 4 is free to rotate by the rotation of the rotating shaft (4).

When the rotary shaft 4 rotates in one direction, the curtain cloth 5 coupled thereto starts to be wound on the rotary shaft 4 to open a window or the like. If the other side of the chain 7 coupled to the driving bracket 10 is pulled, the rotating shaft 4 rotates in the opposite direction as described above and unwinds the curtain cloth 5.

This may be the same as a general roll screen, but the roll screen shown in FIG. 1 and targeted by the present invention means a roll screen having a relatively large curtain cloth 5 that may be mounted on a large flat apartment veranda or the like. do. For example, a roll screen on which the curtain cloth 5 having a width of 6 to 10 meters or more may be mounted will be described as an example.

FIG. 2A is an exploded perspective view of a driving bracket mounted to the roll screen shown in FIG. 1, and FIG. 2B is a view showing FIG. 2A in a different direction.

As shown in these drawings, the roll bracket driving bracket 10 according to the present invention is coupled to the bracket fixture 2 mounted on one side of the frame 1. The bracket fixture 2 has a fixed coupling portion 2a coupled to the frame 1 according to its position, a movable coupling portion 2b coupled to the driving bracket 10, and fixed and movable coupling portions 2a and 2b. Consists of a connecting portion (2c) for connecting.

The end of the movable coupling portion 2b is a portion directly connected to the driving bracket 10, and the combination thereof may change the position of the driving bracket 10 with respect to the bracket fixture 2 by the combination thereof. Therefore, the pulling position of the chain 7 can be easily changed.

That is, as described below, fitting grooves 24a to 24c fitted to the exposed end of the shaft 22 with respect to the end of the movable engagement portion 2b of the fixed bracket fixing tool 2, Figs. 5a. To FIG. 5C).

5A to 5C, the shape of the fitting grooves 24a to 24c may be straight 24a, cross 24b and radial 24c, in addition to the ends of the movable coupling portion 2b. May be any shape that can be fitted into an optional position.

If the end of the movable coupling portion (2b) is fitted to the fitting groove (24a ~ 24c) in such a selective position, the position of the passage opening (21a) of the first body portion 21 in the fixing bracket portion 20 can be changed Therefore, the pull position of the chain 7 can be easily changed.

In fact, the chain 7 shown in FIG. 1 is stretched downward through the passage opening 21a, and since the size of the passage opening 21a is much larger than that of the chain 7, the loading position of the chain 7 is shown. Can be easily changed. In other words, there is an effect that the chain 7 can be pulled swingably at a desired position.

However, as described above, if the end of the movable coupling portion (2b) is fitted to the fitting groove in the optional position, the position of the passage opening (21a) of the first body portion 21 in the fixing bracket portion 20 can be changed. Therefore, the pull position of the chain 7 can be easily changed.

On the other hand, the driving bracket for the roll screen 10 according to the present invention, the fixed bracket portion 20, the rotating bracket portion 30, the rotating member 40, the reduction gear transmission 50, the coupling bush 60 and 3 It consists of two restraint spring (70).

The fixed bracket portion 20 is provided to protrude from the plate body of the first body portion 21 and the first body portion 21 having a passage opening 21a through which the chain 7 passes on one side thereof according to its position. Which has a shaft 22. At this time, the first body portion 21 and the shaft 22 may be manufactured in one piece, or may be manufactured in a separate type and joined to each other.

The exposed end of the shaft 22 is provided with a pair of hook portions 22a that are mutually accessible and spaced apart. This hook portion 22a is finally fitted to the hook engaging portion 62 formed at the end of the coupling bush 60. As a result, the fixed bracket portion 20 and the rotating bracket portion 30 are coupled or decoupled by engaging or releasing the hook portion 22a to the hook engaging portion 62.

The rotating bracket portion 30 is a portion that rotates substantially with respect to the fixed bracket portion 20. The rotating bracket portion 30 has a second body portion 31 coupled to be partially received in the first body portion 21, and a shaft extending from the second body portion 31 and the shaft 22 is inserted coupling It has a coupling part 32.

The outer side of the shaft coupling portion 32 is fitted with a coupling bush 60 is coupled to the rotating shaft (4). At the protruding end of the engaging bush 60, as described above, a hook catching portion 62 as a means for engaging the rotating bracket portion 30 with respect to the fixed bracket portion 20 is formed, and the hook catching portion The outer end of the 62 is formed with a rib 63 extending further outward than the hook portion 22a held by the hook engaging portion 62.

Therefore, the hook portion 22a is easily released by the user's mistake or the surrounding configuration, so that the hook portion 22a is separated from the hook catch portion 62 and includes the engaging bush 60, and the movable bracket 20 is fixed to the fixed bracket portion 20. The part can be prevented from being separated.

Outside the shaft coupling portion 32, a cutout portion 32a in which an end portion of the restraint spring 70 to be described later is disposed is formed. In addition, the plate surface of the second body portion 31 adjacent to the cutout portion 32a is formed with a passage portion 31a which is further cut radially outward and passes through the end portion of the restraint spring 70. Thus, even when the three restraint springs 70 are inserted into the outer side of the shaft 22, the rotating bracket portion 30 has an advantage of being easily coupled to or separated from the fixed bracket portion 20.

The rotating member 40 is disposed between the fixed and rotating bracket portions 20 and 30 to be directly rotated by the chain 7. The rotating member 40 is formed in a ring type, the outer peripheral surface is formed with a chain groove 41, the chain 7 is disposed, the inner circumferential surface of the first sun gear 51, which is one component of the reduction gear transmission 50. ) Is formed.

On the other hand, inside the drive bracket 10 is a deceleration transmission gear 50 for transmitting the rotational movement of the rotating member 40 directly rotating in accordance with the chain (7) to the rotational movement of the rotating bracket portion 30 It is installed.

The deceleration transmission gear 50 is formed at the end of the first sun gear 51 formed along the inner circumferential direction of the rotating member 40 and the shaft 22 facing the first body portion 21 and the first The second sun gear 52 having a diameter smaller than that of the sun gear 51, the plurality of satellite gears 53 disposed between the first and second sun gears 51 and 52, and the rotating bracket portion 30. And a plurality of support shafts 54 protruding from the plate surface of the second body portion 31 to rotatably support the plurality of satellite gears 53.

Accordingly, when one side of the chain 7 is pulled to rotate the rotating member 40, the first sun gear 51 rotates to rotate the planetary gear and the second sun gear 52. At this time, the plurality of planetary gears disposed between the first and second sun gears 51 and 52 are rotatably supported by the support shaft 54 formed in the second body portion 31 of the rotating bracket portion 30. As a result, the rotating bracket portion 30 is able to rotate in one direction with respect to the fixed bracket portion 20.

Of course, when the curtain fabric 5 is pulled up by the operating mechanism of the above configurations by pulling one side of the chain 7, the curtain fabric 5 again by the weight of the curtain fabric 5 which is much heavier than the conventional one. Do not flow under this to shield windows.

Thus, the present invention overcomes the above disadvantages by adding a total of three restraining springs 70. The restraint spring 70 is inserted to the outside of the shaft 22 and both ends thereof are exposed to the cutout portion 32a of the shaft coupling portion 32 to permit rotation of the rotating bracket portion 30 while the coupling bush 60 is provided. Stand alone rotation is prevented. Of course, the protruding end formed inside the coupling bush 60 is disposed between both ends of the restraint spring 70.

As a result, when one observes the restraint spring 70, as shown in FIG. 4, a small circumference section 70a and a large circumference section 70b are formed for both ends spaced apart from each other. When the 70b) rotates toward the small circumference section 70a, the restraint spring 70 is loosened so that the restraint spring 70 easily rotates outside the shaft 22.

However, if the small circumference section 70a rotates in the direction of the large circumference section 70b, the fastening phenomenon occurs in the restraint spring 70, and thus cannot be rotated outside the shaft 22.

As a result, when the chain 7 is pulled, the rotation bracket portion 30 rotates in one direction by the action of the deceleration transmission gear 50, in which case the end of the cutout 32a of the rotation bracket portion 30 is restrained. Since both ends of the spring 70 are rotated from the large circumference section 70b toward the small circumference section 70a, the spring 70 can be easily rotated.

However, on the contrary, if only the coupling bush 60 is to rotate alone due to the load of the curtain cloth 5, the protrusion 61 formed on the inner surface of the coupling bush 60 causes the restraint spring 70 to have a small circumferential section 70a. In order to rotate in the direction of the large circumferential section (70b) in the constrained spring (70) because the tightening phenomenon will not be able to rotate on the outside of the shaft 22.

As described above, according to the present invention, even if the weight of the curtain cloth 5 becomes relatively large, the effect of being able to stably move the curtain cloth 5 stably by generating a stronger rotational torque by the operation of the chain 7. have. In addition, there is an effect that the chain 7 can be operated while the pulling position of the chain 7 is easily changed.

Although the present invention has been described in detail with reference to the drawings, the present invention is not limited thereto.

Referring to the drawings of the above-described embodiment, the ends of the movable coupling portion to be fitted in the fitting groove is formed in a straight shape, it is also possible to make the teeth of the fitting groove and the both ends of the movable coupling portion engaged with each other. In this case, there is an advantage that the position of the passage opening of the first body portion can be more easily changed.

As described above, according to the present invention, there is provided a driving bracket for a roll screen that allows the user to easily couple or detach the rotating member to the bracket body even with a simple structure, and is easy to operate and has a low incidence of failure.

Claims (6)

In the driving bracket for a roll screen for interacting with the driven bracket to rotate the rotating shaft wound the curtain cloth, A fixing bracket portion having a first body portion having a passage hole through which a chain passes, and a shaft provided to protrude from a plate surface of the first body portion; A rotating bracket portion having a second body portion partially received in the first body portion, a cutout portion at a side thereof, and a shaft coupling portion extending from the second body portion and into which the shaft is inserted; A rotating member disposed between the fixed and rotating bracket portions to rotate by the chain; A deceleration transmission gear for transmitting the rotational motion of the rotating member to the rotational motion of the rotating bracket portion; A coupling bush fitted to the outside of the shaft coupling part and coupled to the rotating shaft; And a plurality of restraining springs inserted into the outside of the shaft and exposed at both ends of the shaft coupling part to allow the rotation of the rotating bracket portion to prevent rotation of the coupling bush. The method of claim 1, The exposed end of the shaft is characterized in that the fitting groove is formed so as to be adjustable in position with respect to the end of the fixed bracket fixture fixed, drive bracket for a roll screen. The method of claim 1, The deceleration transmission gear, A first sun gear formed along the inner circumferential direction of the rotating member; A second sun gear formed at an end of the shaft facing the first body part and having a diameter smaller than the first sun gear; A plurality of satellite gears disposed between the first and second sun gears; And a plurality of support shafts protruding from the second body plate surface of the rotating bracket portion to rotatably support the plurality of satellite gears. The method of claim 1, The exposed end of the shaft is a pair of hook portions that are mutually accessible and spaced apart, the hook engaging portion is characterized in that the hook engaging portion is formed at the end of the coupling bushing corresponding to the hook portion. The method of claim 4, wherein The outer end portion of the engaging bush is formed with a rib extending further outward than the hook portion held by the hook engaging portion, the roll bracket driving bracket. The method of claim 1, The plate surface of the second body portion adjacent to the cutout portion is further cut radially outwardly and a passage portion through which the end portion of the restraint spring is formed, the driving bracket for a roll screen.

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