KR100780084B1 - Driving device for a blind - Google Patents

Abstract

A driving device for a blind is provided to allow a user to lift a light blocking member up and down with low power at a high speed by providing a decelerating member to a rotating member connected to a driving string and simultaneously connecting the driving string with the rotating member by using a gear. A driving device for a blind comprises a support(10) connected to the blind, a driving wheel(20) connected to the outer side of the support(10), a carrier(30) provided at the inner side of the support(10), and a finish member(40). The support(10) has an opened one side, a ring gear(14) formed on the inner side thereof, and a sun gear(12) integrally formed with a transfer gear(11). The driving wheel(20) has a rotation gear(22) formed on the inner side thereof, and a locking rib(21) formed on the outer side thereof to fix a driving string. The carrier(30) has a braking section(31), a planetary gear shaft(32), and a planetary gear(33).

Description

Driving device for blinds {driving device for a blind}

1 is a perspective view of a drive device for a blind according to an embodiment of the present invention.

Figure 2 is an assembly view of the drive device for the blind according to the embodiment of the present invention.

Figure 3 is a perspective view of the combination of the support and the cover according to an embodiment of the present invention.

Figure 4 is a partially cut away perspective view of the drive device for the blind according to the embodiment of the present invention.

Figure 5 is a front view of the support provided with a drive wheel according to an embodiment of the present invention.

6 is a sectional view of a drive device for a blind according to an embodiment of the present invention.

Figure 7 is a front view of the combination of the sun gear and planetary gear according to an embodiment of the present invention.

Figure 8 is a front view of the support coupled to the finish according to an embodiment of the present invention.

[Description of Symbols for Main Parts of Drawing]

1: Drive device for blinds 2: Drive line 10: Support part

11; Transmission Gear 12: Sun Gear 13: Fixed Shaft

14: ring gear 15: coupling gear 16: guide wheel

17: connection portion 18: coupling portion 20: drive wheel

21: Jam rib 22: Rotating gear 30: Carrier

31: braking part 32: planetary gear shaft 33: planetary gear

34: Rotating groove 40: Finish portion 41: Braking spring

50: cover 51: coupling groove

The present invention relates to a drive device for blinds, and more particularly, to a drive device for blinds that can be unfolded or wound at a high speed while supporting the sunshade installed in the blinds with a small force.

In general, blinds are thin, narrow metal plates, wooden boards, plastic boards, etc., interlaced at regular intervals to cover the sunlight. The angle of the plate can be adjusted according to the angle, the ventilation is good, and if necessary, the entire blind can be rolled up using a strap that raises the whole.

Such blinds have recently been divided into vertical blinds and horizontal blinds. Vertical blinds are a plurality of narrow and long awnings arranged vertically, and horizontal blinds are a plurality of narrow and long awnings. These are placed horizontally, and in vertical blinds the shade is struck from top to bottom, so light materials such as cloth are used as the shade, and in horizontal blinds the shade is usually made of aluminum because the shade should be kept horizontal. Use plate or solid wood.

At this time, the horizontal blind is pulled in both directions by the drive line wound on the rotating means of the drive unit installed on one end of the head box disposed on the upper side, while spreading or winding the awning material in the upper and lower directions, and positioned at an appropriate height It works by fixing the sunshade, which is, when the user pulls the drive line in one direction, while the rotating means connected to the drive line rotates at the same time, the rotating shaft connected to the rotating means is rotated to the rotating shaft and the sunshade At the same time, the sunshade moves while the connected lifting and lowering rope is wound or unwound from the pivot shaft, and when pulling the drive string stops, the rotating means and the pivot shaft are stopped and fixed at the same time, and the shade member is fixed at an appropriate height.

However, the blinds operated as described above are composed of a awning material composed of a plurality of aluminum plates or wood plates, or a awning material composed of a heavy cloth, etc., and when connected to a lifting line, the user pulls the drive line due to the weight of the awning material. When driving a lot of force is difficult to operate, there is a problem that the blind is easily broken when the force is weak when fixing the sunshade having a weight of 10kg to 20kg.

In addition, in order to raise and lower the sunshade, the driving line connected to the rotating means must be pulled in one direction. Since the rotating means and the driving line are directly connected, the length of the driving line must be as long as the length of the sunshade, and the operator The number of pulling the drive line also increases, there was a problem such as the speed of the awning material rises and falls too slow.

Accordingly, the present invention provides a reduction means to the rotating means connected to the drive line to solve the above problems and at the same time by connecting the drive line and the rotation means with a gear, so that the user can quickly raise and lower the sunshade with a small force The aim is to easily operate the blinds.

The present invention relates to a drive device for blinds, and more particularly, to a drive device for blinds that can be unfolded or wound at a high speed while supporting the sunshade installed in the blinds with a small force.

When the present invention is roughly described, the blind drive device of the present invention, which is configured at one end of the blind, includes a support part connected to the blind, a carrier provided inside the support part and connected to a rotation shaft of the blind, and the support part outside. It consists of a drive wheel for rotating the carrier.

At this time, the carrier is connected in the form of a support and planetary gear reducer (PGT), so that the carrier can be easily raised and lowered with a small force while supporting the weight of the sunshade, and the carrier is a support It is connected to the transmission gear of the outside, the transmission gear is connected through the drive wheel and a plurality of gears inside the drive wheel, thereby adjusting the diameter of the transmission gear, it is possible to adjust the rotational speed of the carrier more quickly.

It is configured in this way, the user will be described in more detail with reference to the embodiment shown in each drawing the drive device for blinds of the present invention that can be quickly operated with a small force when using a drive device using a drive line.

As shown in FIG. 1, the blind driving device 1 of the present invention transmits a rotational force due to the pulling of the driving line 2 to the pivot shaft, and is largely supported by a support 10 connected to one end of the blind. The carrier 30 is inserted into the support 10 and rotates, and a driving wheel 20 connected to the support 10 to rotate the carrier 30.

First, as shown in FIGS. 2 to 4, the support part 10 is connected to a rectangular cross section and each edge is connected to the blind so as to be connected to the end of the blind having a rectangular cross section 17. ) Is formed, the inner side of the via is open via one side, the ring gear 14 is formed in a circular shape along the inner side.

In addition, a sun gear 12 protruding into the support 10 is formed at the center of the ring gear 14, and a transmission gear 11 protruding out of the support 10 at the same position as the sun gear 12 is formed. The sun gear 12 and the transmission gear 11 are integrally formed by simultaneously penetrating and fixing the central gears to the hexahedral fixed shaft 13.

And the outer side of the support 10 configured as described above is provided with a drive wheel 20 to be rotated about the transmission gear 11, the drive wheel 20 to the side on which the drive wheel 20 is located. A coupling part 18 is formed to which the guide wheel 16 for guiding the driving line 2 wound around and the cover 50 covering the outside of the support part 10 are coupled.

Next, the driving wheel 20 has a shape in which the inside penetrates in a circular shape as shown in FIG. 2, and a plurality of locking ribs 21 are formed along both sides of the outer circumferential surface such that the driving line 2 is caught by the outer circumferential surface thereof. Are alternately formed, and a rotary gear 22 is formed along the inner surface.

As shown in FIG. 4, the driving wheels 20 are inserted between the locking ribs 21, and as the user pulls the driving lines 2, the driving wheels 2 are connected to the locking ribs 21. By digging in between, the pulling force of the drive line 2 is reliably transmitted to the drive wheel 20.

The driving wheel 20 formed as described above is seated around the transmission gear 11 protruding outside the support 10 as shown in FIGS. 3 to 5. Between the rotary gear 22 and the transmission gear 11, a plurality of connecting gears 15 interposed between the rotary gear 22 and the transmission gear 11 so as to be protruded and provided so as to be rotatable outside the support 10. Thus, the drive wheel 20 is fixed.

As the driving wheel 20 is connected to the outside of the support 10 as described above, this rotational force is transmitted to the transmission gear 11 through the connecting gear 15 when the driving wheel 20 is rotated, the transmission gear 11 ) And the sun gear 12 formed integrally with the rotating the carrier 30 to be rotated at the same time, the rotating shaft connected to the carrier 30 is rotated, wherein the transmission gear 11 is a rotary gear 22 By having a diameter smaller than), the transmission gear 11 is rotated more than the movement of the drive wheel 20, it is possible to make the rotation of the rotating shaft faster.

That is, in the conventional blind drive device, the driving wheel and the rotation shaft are integrally formed, so that when the driving wheel rotates once, the rotation shaft also rotates one rotation, but as in the embodiment of the present invention, Since the diameter has a length of ½ of the diameter of the rotary gear 22, when the driving wheel 20 rotates once, the transmission gear 11 rotates two wheels.

Through this, when the user pulls the drive line 2, even when the short length is pulled, the rotating shaft rotates twice as fast as the driving wheel 20, so that the sunshade connected to the rotating shaft can be raised and lowered more quickly. Not limited to the embodiment of the present invention, the diameter of the transmission gear 11 is three times faster to have a length of the diameter of the rotary gear 22, or four times faster to have a length of 1/4, such as a rotating shaft This rotation speed can be adjusted in various ways.

In addition, the transmission gear 11 is fitted and fixed to the fixed shaft 13, the connection gear 15 is also formed as a fixed pin to be inserted and fixed through the center, it is easy to connect and dismantle in the support 10 By making it possible to easily replace the transmission gear 11 and the connecting gear 15, it is possible to more easily adjust the rising and falling speed of the sunshade.

As described above, one side of the support part 10 to which the driving wheel 20 is connected is fixed by being covered with a cover 50 in which a coupling groove 51 capable of connecting and fixing with the coupling part 18 is formed. do.

Next, as shown in FIG. 2, the carrier 30 is in close contact with and inserted into the hollow through the open side of the support part 10 and then connected to the sun gear 12 to rotate. The pair 30 is formed by overlapping a front and rear pairs on a circular cross section, and a braking part 31 protruding a predetermined length along the circumferential direction is formed on one side of each carrier 30, respectively, and the ring gear 14 Four protruding planetary gear shafts 32 are formed on the side facing to the planetary gear shaft, and the planetary gear shafts 32 are planetary gears 33 rotatably coupled to each other, and the planetary gears 33 are sun gears. In the form of a planetary gear reducer that is engaged between the ring gear 14 and the ring gear 14, and the planetary gear 33 engaged with the ring gear 14 rotates along the ring gear 14 when the sun gear 12 rotates. It is composed.

And the center of the other side surface of the planetary gear shaft 32 is formed with a rotation groove 34 for inserting and fixing the rotation shaft.

As shown in FIG. 4 or FIG. 6 or FIG. 7, the carrier 30 is connected to the sun gear 12 and the planetary gear reducer in the support 10, thereby having a small volume and rotating through the rotation shaft. The weight of the sunshade connected to the coaxial is distributed to each planetary gear 33, and the transmission load and the speed are reduced to reduce the friction loss, and the efficiency is increased. To draw (2).

Then, after the carrier 30 is inserted into the support 10, a closing portion 40 for blocking the support 10 and fixing the carrier 30 is connected as shown in FIG. 2 or 8. Finish portion 40 is formed in a circular shape to be inserted into each braking portion 31, one end is formed in a rectangular cross section to close the support portion 10, the outside of the circular brake spring is bent at both ends 41 is brought into close contact with each other so that each of the bent ends of the braking springs 41 is caught between the braking portions 31.

As a result, when the carrier 30 is pulled and the carrier 30 is rotated, the carrier 30 rotates while the brake springs 41 caught by the brake part 31 are opened to rotate together, thereby driving the drive string 2. When the pulling force disappears, the elasticity of the braking spring 41 closes and fixes the finishing portion 40. The braking portion 31 is caught by the braking spring 41, so that the carrier 30 can be easily fixed. have.

The operation relationship of the blind drive device 1 according to the present embodiment configured as described above will be described in detail.

First, when the driving line 2 is pulled in one direction in the blind driving device 1 in a fixed state because no force is applied, the driving wheel 20 connected to the driving line 2 rotates, and a rotating gear connected thereto. 22 transmits a rotational force to the transmission gear 11, the sun gear 12 integrally formed with the transmission gear 11 rotates together, the planetary gear 33 connected thereto rotates along the ring gear 14 Done.

Then, the carrier 30 to which the planetary gear 33 is connected rotates together with the planetary gear 33 in the support 10, and the brake unit 31 pushes the brake spring 41 to loosely loosen it. While the carrier 30 was rotated, the rotating shaft connected thereto rotates together to move the sun visor to the upper or lower direction.

Next, in the state of operating in this way, when pulling the drive line 2 is stopped, the drive wheel 20 stops, the carrier 30 stops together, and the rotation shaft is moved downward by the weight of the sunshade. At this time, while the carrier 30 connected to the rotational shaft rotates, the braking portions 31 are caught at the bent ends of the braking springs 41, and the elastic force closely adheres to the finish portion 40. The fixed braking spring 41 prevents the rotation of the rotation shaft by preventing the rotation of the carrier 30, and the sunshade connected thereto is fixed at a predetermined height without falling down.

As described above, the blind driving device 1 of the present invention has a diameter of the transmission gear 11 to which the rotational force of the driving wheel 20 is transmitted is smaller than the diameter of the rotation gear 22, and thus connected to the transmission gear 11 and the same. By rotating the carrier 30 faster than the driving wheel 20, it is possible to quickly adjust the speed of lifting and lowering the sunshade, the carrier 30 is configured in the form of the sun gear 12 and the planetary gear reducer in the support 10 By doing so, while bearing the weight of the sunshade, the user can pull the drive line (2) with a small force.

In the above has been shown and described with respect to the preferred embodiment of the present invention, the present invention is not limited to the above embodiment and the present invention, such as adjusting the ratio of the diameter of the rotary gear 22 and the diameter of the transmission gear (11) Anyone of ordinary skill in the art can make various modifications and implementations, and such changes are within the scope of the claims.

As described above, the present invention has a diameter of the transmission gear smaller than the diameter of the rotary gear and is connected by a gear, thereby rotating the transmission gear and the carrier connected thereto faster than the driving wheel when the driving wheel is rotated, thereby increasing and decreasing the speed of the sunshade. Fast adjustment, the carrier is connected in the form of a planetary gear reducer, the drive device for the blind bears the weight of the sunshade, and at the same time has the effect that the user can pull the drive line with a small force.

Claims (1)

In the drive device which is installed at one end of the blind to raise and lower the sun visor, A support part 10 connected to the blinds, a driving wheel 20 connected to the outside of the support part 10, a carrier 30 provided inside the support part 10, and a finishing part 40 closing the support part 10. Consisting of; The support 10 has a circular shape, one side of which is opened in the bin, and a ring gear 14 is formed along the inner surface, and the sun gear 12 and the support 10 protruding toward the center of the ring gear 14. A transmission gear 11 protruding outward is integrally formed through the fixed shaft 13; The driving wheel 20 has a rotary gear 22 formed along the inner side in a penetrating circle shape, and the locking ribs 21 are staggered so as to be able to fix the driving line 2 along the outer side. An upper portion of the transmission gear 11 outside the support portion 10; At least one connecting gear (15) interposed between the transmission gear (11) and the rotary gear (22) is provided at the side of the transmission gear (11); The carrier 30 has a pair of circular cross-sections which are in close contact with and can be inserted into the support 10, and a braking part 31 protruding a predetermined length is formed on the side surface thereof, and the ring gear 14 is provided with the ring gear 14. On the opposite side, a planetary gear shaft 32 protruding in a circular shape and a planetary gear 33 rotatably coupled to the planetary gear shaft 32 and fitted between the sun gear 12 and the ring gear 14 are engaged. On the other side, the rotation groove 34 which can be inserted and fixed to the blind rotation shaft is formed; The finish part 40 is fixed to the support part 10, and fixes the carrier 30 to the support part 10, and is inserted into each braking part 31, and both ends are bent outwardly to each end. By forming the blind driving device 1 in which the braking springs 41 held between the braking portions 31 are tightly formed and formed, A drive device for a blind, characterized in that the raising and lowering of the sun visor is made quick with a small force.

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