TRANSMISSION CONTROL STRUCTURE FOR CURTAIN SYSTEM

A transmission control structure for a curtain system includes a driving set and a transmission set having a base casing having one end formed with a mounting portion, on which an end portion of an upper transverse track of the curtain system is mounted. Also, a pulley wrapped around by a rope of the curtain system is pivotally mounted in the base casing. The driving set has a motor with the controllable forward and reverse rotations and rotating speed. The motor has an output shaft for driving the pulley of the transmission set. Because the mounting portion of the base casing is directly connected to one end portion of the upper transverse track of the existing curtain system, only the existing rope needs to be wound around the pulley of the transmission set. The replacement and modification can be easily made, and the unessential waste can be decreased.

BACKGROUND OF THE INVENTION

(1) Field of the Invention

The invention relates to the driving technology of a curtain system, and more particularly to a transmission control structure for a curtain system having the high safety and the convenient operation, so as to broaden the application of the solar energy generation and to simplify the mounting and replacing procedures to decrease the unessential waste.

(2) Description of the Prior Art

A curtain system is a building accessory for shielding light and preventing the indoor objects from being arbitrarily peeped by others, and is widely applied to various doors and windows. There are many kinds of curtain systems. However, either the hanging blind, shutter, Roman blind or any other structure design with the vertical or horizontal moving aspect is controlled by a rope or ropes. The conventional control device for the curtain system generally includes: at least one pulley set (e.g., a curtain system opened and closed in the left-right direction) or a reel set (a curtain system that are coiled in the top-bottom direction), a transverse rod pivotally mounted on the curtain system; a transmission mechanism disposed on one end of the transverse rod connected to the transmission mechanism and the pulley set (or reel set); and a ring rope, which is disposed on a lateral side of the window and has a top end connected to the transmission mechanism. The rope can be pulled by the user cyclically. The transmission of the transmission mechanism can rotate the pulley set (or reel set) in a predetermined rotating direction. The movable curtain of the curtain system is connected to the pulley set (or reel set). Thus, when the pulley set (or reel set) forwards or reverses, the curtain can be moved leftwards or rightwards to develop or close (or coil upwards or release rightwards) so that the movable blind of the curtain system is retracted upwards or developed downwards.

The common drawback of the above-mentioned conventional transmission control devices resides in that the rope is hung from the lateral side of the window, and the rope may intertwine with the human body accidentally. More particularly, the kid's neck tends to be twined by the rope, so that the safety in use is poor. Attentions to these deathful dangers hidden in the home life should be indeed paid.

In order to solve the safety problem of the rope of the curtain system, various products capable of overcoming the rope problem using various technological means have been developed. However, the overall structure is still too complicated. Usually, the overall set of upper transverse track, pulley set (or reel set), transmission mechanism and the like has to be replaced. Thus, the replacement is inconvenient because the upper transverse track, the pulley set (or reel set) and the transmission mechanism, which have not been damaged, also have to be discarded to cause the unessential waste. So, the prior art cannot satisfy the actual requirement in use, and needs to be improved. How to solve this problem is the important subject in this industry.

SUMMARY OF THE INVENTION

A main object of the invention is to provide a transmission control structure for a curtain system having the high safety. The forward and reverse rotations of a stepping motor can be used to pull the rope to directly operate the curtain system to develop and retract the curtain.

Thus, the laborsaving effect and easy operation effect can be obtained. In addition, it is unnecessary to hang a redundant rope on one side of the window to prevent the neck from being accidentally twined, and to effectively enhance the safety and convenience in use.

Also, another main object of the invention is to provide a transmission control structure for a curtain system, in which the replacement can be easily performed. The transmission control structure can be directly assembled with one end of the upper transverse track. The installation can be completed after cutting off the redundant portion of the original rope without replacing the overall set. So, the unessential waste can be avoided.

The invention mainly achieves the objects and performance through the following technological means. The curtain system has an upper transverse track, and a rope is disposed on the upper transverse track. The rope can move at least one curtain, disposed below the upper transverse track, to be developed or retracted. The characteristic lies in that: the transmission control structure comprising a transmission set and a driving set is disposed on one end portion of the upper transverse track; the transmission set has a base casing, wherein one end of the base casing is formed with a mounting portion, on which the end portion of the upper transverse track is mounted, and a pulley to be wrapped around by the rope is pivotally mounted in the base casing; and the driving set may be disposed on the transmission set, a motor with controllable forward and reverse rotations and a controllable rotating speed is disposed in the driving set, and the motor has an output shaft capable of synchronously driving the pulley of the transmission set.

With the embodied implementation of the technological means, the curtain of the curtain system of the invention can be driven by the transmission control structure. Because the rope wraps around the pulley of the transmission set, the rope cannot be exposed and hung, so that the accident of twining around the neck can be avoided, and the safety is effectively enhanced. In addition, the curtain can be controlled by the electric driving set, thereby significantly enhancing the operation convenience. In addition, the mounting portion of the base casing of the transmission set is directly inserted into and connected to the end portion of the upper transverse track of the existing curtain system. So, the modification can be completed by wrapping the rope around the pulley of the transmission set and then cut off the redundant rope without removing the overall set of upper transverse track. Thus, the replacement and modification are easy, the unessential waste can be reduced, and the utility thereof can be effectively enhanced.

Further aspects, objects, and desirable features of the invention will be better understood from the detailed description and drawings that follow in which various embodiments of the disclosed invention are illustrated by way of examples.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The invention provides a transmission control structure for a curtain system. In the following detailed description of the preferred embodiments and the members thereof, reference is made to the accompanying drawings which form a part hereof. In this regard, directional terminology, such as “front,” “rear,” “left,” “right”, “top,” “bottom,” “horizontal,” and “vertical” is used with reference to the orientation of the drawing(s) being described. The components of the present invention can be positioned in a number of different orientations. As such, the directional terminology is used for purposes of illustration and is in no way limiting. On the other hand, the drawings are only schematic and the sizes of components may be exaggerated for clarity, so the sizes can be changed according to the design and requirement in the embodiment of the invention without departing from the scope of the invention.

The invention provides the transmission control structure for the curtain system, as shown inFIG. 1. The curtain system has an upper transverse track10. A rope15is disposed on the upper transverse track10. The rope15can drive at least one curtain20, disposed below the upper transverse track10, through the transmission control structure to control the curtain20to be developed or retracted. The construction and operation principle of the curtain system are the same as those of the existing art, and do not pertain to the characteristic of the invention, so detailed descriptions thereof will be omitted.

The characteristic of the invention resides in the transmission control structure, as shown inFIGS. 2 to 4. The transmission control structure includes a transmission set30, a driving set40and a control set50.

The transmission set30has a base casing31. The base casing31is formed with an internal space with an opening. One end of the base casing31is formed with a mounting portion32to be mounted on the end portion of the upper transverse track10. The mounting portion32has a mounting hole320communicating with the internal space. A fixing slot321is formed on each of two lateral inner sides of the mounting hole320near the internal space. A metal cylinder322can be embedded into the fixing slot321, which exposes a portion of a circular arc surface of the metal cylinder322in the mounting hole320to provide the friction upon rotation of the rope15. In addition, a raising plate323transversally crosses the fixing slot321near the internal space. The raising plate323is provided such that the rope15cannot be close to the bottom of the internal space when the installation worker is installing the rope15so that the installation of the worker is facilitated. Furthermore, the end portion of the upper transverse track10can be inserted into and connected to the mounting hole320of the mounting portion32. Also, a bearing seat310having a through hole is formed on the base casing31. A bearing311for the pivotal connection to a pulley33is disposed in the bearing seat310. The pulley33has a shaft330pivotally mounted in the bearing311of the base casing31. An exposed end surface of the shaft330is formed with a polygonal driving hole332, so that the driving set40can synchronously drive the pulley33. Furthermore, a rope slot331is formed on a circumference of the pulley33, so that the rope15in the upper transverse track10can wrap around the pulley33and is pulled by the action of the pulley33. In addition, the internal space of the base casing31is formed with two screw cylinders34disposed on two sides of the axis of the bearing seat310, respectively. The opening of the base casing31is covered with a cover plate35having a through hole350corresponding to the screw cylinder34, so that a corresponding screwing member36may be utilized to screw the cover plate35onto the base casing31and further to screw, from bottom to top, the driving set40.

In addition, as shown inFIG. 3, the driving set40has two housings41,42capable of closing upon each other, and a motor45capable of driving the pulley33of the transmission set30is disposed in the two housings41,42. Also, the end portions of the two housings41,42corresponding to the base casing31are formed with a tab410and a notch420capable of relatively embedding with each other. The housing41with the tab410is formed with a shaft hole411at the middle of the tab410. In addition, the tab410is formed with through holes412disposed on two sides of the axis of the shaft hole411, so that the screwing member36of the base casing31of the transmission set30can pass through the shaft hole411. Furthermore, a plurality of screwing elements431is utilized to screw a buffer seat43to the housing41. The buffer seat43has a folded sheet432corresponding to the tab410. The folded sheet432can be screwed to the motor45using a plurality of screwing elements434. Each of two sides of the folded sheet432of the buffer seat43is formed with a screwing hole433corresponding to the through hole412of the housing41so that the screwing member36of the transmission set30can be screwed to the screwing hole433, and the driving set40can be screwed to the transmission set30in different directions using the through hole412and the screwing hole433on the center line. Furthermore, a motor45having the forward and reverse rotations and the rotating speed that can be controlled is disposed in the housing41. The motor45may be selected as a stepping motor or a servo motor. Also, the motor45has a polygonal output shaft46penetrating through the shaft hole411of the tab410of the housing41. The output shaft46can be inserted into the driving hole332of the pulley33of the transmission set30so that the motor45of the driving set40can synchronously forward and reverse the pulley33in the transmission set30. A circuit board48is disposed in the other housing42. The circuit board48can control the forward and reverse rotations and the speed of the motor45.

The control set50is connected to the driving set40and may be connected to the circuit board48of the driving set40in a wired or wireless manner so that the control set50can control the forward and reverse rotations and the rotating speed of the motor45of the driving set40in a wired or wireless manner, and that the curtain20can be controlled to develop and retract through the pulley33and the rope15. In the invention, the wireless manner is adopted as the main embodiment.

Thus, the transmission control structure for the curtain system, which can be easily operated and has the high safety, is constructed.

The actual application of the transmission control structure for the curtain system of the invention is shown inFIGS. 1,4,5and6. In operation, the user only needs to push the developing or retracting button on the control set50to control the output shaft46of the motor45to forward or reverse according to the requirement through the circuit board48of the driving set40. When the output shaft46of the motor45rotates, the pulley33in the transmission set30can be synchronously driven, and the rotating pulley33can further pull the rope15in the upper transverse track10in the forward and reverse rotations, thereby synchronously driving the curtain20on the upper transverse track10to develop or retract and stop at the desired position.

According to the above-mentioned design and described operation, the invention enables the curtain20of the curtain system to be controlled and driven by the transmission control structure through the embodied technological means. Because the rope15wraps around the pulley33of the transmission set30and cannot be exposed and hung, the accident of twining around the neck can be avoided, thereby effectively enhancing the safety. In addition, the curtain20can be driven by the electric driving set40, thereby significantly enhancing the operation convenience.

Next, the transmission control structure of the invention can be directly inserted into and connected to the end portion of the upper transverse track10of the existing curtain system by using the mounting portion32of the base casing31of the transmission set30, wrapping the existing rope15around the pulley33of the transmission set30, and then cutting off the redundant portion to complete the modification without removing the overall set of upper transverse track10. So, the replacement is easy, and the unessential waste can be reduced.

Furthermore, the motor45of the driving set40of the invention is screwed into the housing41through the buffer seat43, so that the unessential vibration can be decreased, and the damage to the components caused by vibration can be avoided.

Also, the driving set40of the invention can be screwed onto the transmission set30in different directions using the through hole412and the screwing hole433on the center line, thereby enhancing the added value and enhancing the economic effectiveness thereof.

In summary, it is understood that the invention is a utility invention with the excellent creativeness. In order to solve the conventional problems effectively, the effect is further significantly enhanced. In addition, no product invention or public use the same or similar to the invention in the same technical field has been found, and the invention has the enhanced effect. So, the invention satisfies the requirements of novelty and the inventive step, and is thus filed as this patent application.

New characteristics and advantages of the invention covered by this document have been set forth in the foregoing description. It is to be expressly understood, however, that the drawings are for the purpose of illustration only and are not intended as a definition of the limits of the invention. Changes in methods, shapes, structures or devices may be made in details without exceeding the scope of the invention by those who are skilled in the art. The scope of the invention is, of course, defined in the language in which the appended claims are expressed.