MXPA06013260A - Device for winding suspension cord of blind - Google Patents

Abstract

A device for winding a suspension cord of a blind is provided to wind a suspension cord disposed on a blind. The suspension cord is spirally wound about a cord spool through a spiral guide groove of a guide component, and then arranged along the cord spool in sequence. Additionally, when the cord spool is connected to a power resilient element as a power source of rotation, friction force is applied to the cord spool through an adjusting component to adjust the output torque of the cord spool, such that the torque applied to the cord spool by the power resilient element can be balanced out with the torque applied to the cord spool by the gravity of the blind.

Description

DEVICE FOR ROLLING THE SHUTTER SUSPENSION CORD Technical Field The present invention relates to a mechanism for winding the blind suspension cord, and in particular to a device for winding the blind suspension cord, which accommodates the suspension cord on the reel in sequence by means of guide means and adjusts the performance or the torque of the spool using the friction force applied to the spool by means of the adjustment means.

Background A cordless blind uses the storage spring as a power source, and the torque applied to the spool by the storage spring is compensated by the torque applied to the spool by the gravity of the blind; so the blind can be maintained in any position.

The relevant technology has been revealed in some patents of the United States. The U.S. patent publication No. 5,706,876 disclosed that the suspension cord is wound when the roller bar of the blind is rotated, and the power spring is arranged on the roll bar of the blind to generate the rotation power to wind the suspension cord.

US Patent Publication No. 5,813,447 disclosed that the roll bar of the blind is rotated and moved in an axial direction to accommodate the suspension cords along the roll bar surface of the blind, thus it prevents the suspension cords from becoming entangled between them. Without i However, the structure for winding the suspension cords is complicated and the space for moving the roll bar of the blind in an axial direction is limited. Therefore, such a structure is unsuitable for a large blind or with long suspension cords.

The U.S. patent publication No. 5, 133,399 and U.S. Patent Publication. No. 5,328, 113 revealed that the reel has a tensioner and the storage spring is also used as a power source. The suspension cords can be automatically accommodated on the surface of the reel when they are wound; therefore, the winding structure of the suspension cords is simple. In US Patent Publication No. 5, 133,399, the spiral grooves are formed on the surface of the spool to accommodate the suspension cords, however, a long suspension cord needs a spiral groove commensurate with the spool, so that this must be larger to fully accommodate the long suspension cords. Therefore, the reel must be of different sizes since the length of the suspension cords varies to suit the blinds. The spiral grooves formed on the surface of the spool increase the manufacturing costs. In the U.S. patent publication No. 5,328, 113, the spool is in the form of a tensioner, such that the suspension cord can be automatically accommodated on the spool with a tensioner when the suspension cord is wound. However, there is no guiding mechanism between the suspension cord and the spool, and the portion of the tensioner is far from the position where the suspension cord corresponds with the spool. In such a way, the suspension cord will be easily grasped? during the subsequent stage of winding the suspension cord due to the absence of the tensioner guide, resulting in a non-soft winding of the suspension cord. Additionally, the torque of the storage spring wears out over time and the increase in frequency of use. The torque of the weakened storage spring can not compensate with the torque applied to the Reel by the gravity of the blind. Therefore, the blind can not be fixed due to the severity of the same, such problem can not be resolved until the storage spring is replaced. In addition, the size of the blind should adjust slightly depending on the different facilities. In this way, the severity of the blind varies, while the torque of the storage spring is constant, resulting in the storage spring not being completely suitable for the blinds of different sizes.

However, the device for winding the suspension cord without the use of the storage spring, continually suffers from a winding of the non-soft suspension cord; therefore the softness in the winding of the suspension cord becomes the subject to be studied.

Summary of the invention In view of the above-mentioned problems to be solved, the device for winding the suspension cord of the shutter provided in the present invention can accommodate the suspension cord in the reel in sequence and compensate for the torque of an elastic power element. for blinds of different sizes. Accordingly, the present invention provides a device for winding the blind cord which is used to wind a suspension cord passing through at least one of the materials covering the blind. The device for winding the blind cord comprises an elastic power element, a pedestal, a reel, guide and adjustment means. The reel is pivoted to the pedestal and guided by the elastic power element to rotate, such that the suspension cord is guided by the guide means to wind up to the reel in a sequential and smooth manner. Additionally, the adjustment means mounted on the pedestal to apply friction force to the spool to (wet / facilitate) the rotation of the spool, thereby compensating the torque applied to the spool by the elastic power element and the torque of torsion applied to the reel covering the material of the blind.

In addition, the present invention provides a module for winding the suspension cord of the shutter, which is used to wind the suspension cord through at least one of the shutter materials. The module for winding the suspension cord of the shutter comprises a pedestal, a spool and guide means. The carriage is pivoted to the pedestal and rotates to wind the suspension cord. The guide means has a guide portion, which is used to direct the suspension cord to wind on the reel and accommodate the suspension cord along the reel in sequence.

In the present invention, the guide means direct the suspension cord in such a way that it is wound onto the reel at a specific angle, and with the tensioner of the reel, the suspension cord is arranged on the reel in sequence. When the spool is connected to the elastic power element as a source of rotational power, the present invention further provides adjustment means, which apply frictional force to the spool to adjust the torque of the spool. When the present invention is applied to blinds of different sizes, or the elastic power element has an insufficient torque due to the attenuation of the elastic force, the torque applied to the suspension cord by the spool can be constant when reducing the force of friction. Therefore, the device for winding the suspension cord of a blind provided by the present invention can wind the suspension cord to the spool smoothly, and can be used in blinds of different sizes by adjusting the torque applied to the suspension cord by the reel. In addition, when the elastic force of the elastic power element decreases, the torque of the spool can be adjusted to achieve efficiency in common use, conventional mounting and subsequent adjustment.

The characteristics and practices of the personifications referred to in this invention will be illustrated below in detail with reference to the drawings.

The range of the application of the present invention will be apparent from the detailed description below. However, it should be understood that the detailed description and specific examples, while indicating the referenced personifications of the invention are given only as a way of illustration, since the various changes and modifications within the spirit and range of the invention to Starting from the detailed description will be evident to those skilled in the field.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be better understood from the detailed description given hereunder to illustrate, and is not limited to the present invention, Fig. 1 is a combined diagram of the present invention; Fig. 2 is an exploded view of the present invention.

Fig. 3 is a schematic view of the connection relationship between the guide means, the suspension cord and the reel of the present invention.

Fig. 4A is a schematic view of the connection relationship of the adjustment means and the pedestal in the first embodiment of the present invention.

Fig. 4B is a schematic view of the operation of the adjustment means and the pedestal in the first embodiment of the present invention; Fig. 5 is a schematic view of the connection of the adjustment means and the pedestal in the second embodiment of the present invention, and Fig. 6 is a schematic view of the connection of the adjustment means and the pedestal in the third embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION Please refer to Figures 1 and 2 of the combined diagram and the perspective view of the present invention. As shown in Figures 1 and 2, the device for winding the suspension cord of a blind is used to make the suspension cord (110) that passes through the blind covering material (100) wrap around the reel (300) by means of rotation. The material covering the blind (100) can be in honeycomb folds or in simple blind slats.

One end of the spool (300) is connected to the elastic power element (700) via a rotation shaft (910), and the pedestal (310) and the guide means (330) are mounted to the rail / upper bar ( 900). The pedestal (310) is adjacent to the guide means (330) and used to hold the spool (300) to rotate it. The suspension cord (110) passes through the pedestal (310) from bottom to top, then passes through the guide means (330) laterally, and finally winds up the reel (300). V The adjustment means (500) is arranged on the pedestal (310) and is used to adjust the resistance force that occurs when the spool (300) is rotated, to solve the problems of the elastic power element force ( 700) is attenuated after long-term use and the blinds of different sizes need different elastic forces.

In addition, the cover (800) has one end bent in the pedestal (310), and the other end pivoted at one end of the spool (300) away from the pedestal (310), such that both ends of the spool (300) are respectively pivoted to the pedestal (300) and the cover (800). Therefore, the spool (300) can rotate smoothly. The elastic power element (700) is a storage spring, which uses a power spring as a source of power; The power spring can be used to generate a torque, and is of constant force.

The axis of rotation (910) passes through the central axis of the spool (300), and is connected to one or more elastic power elements (700) with one or both ends thereof, and passes through multiple winding devices the suspension cord disposed in the upper rail (900).

Please refer to Fig. 3 of the schematic view of the connection ratio of the guide means (330), the suspension cord (110), and the reel (300) of the present invention. As shown in Fig. 3, the first hole (311) is formed at the bottom of the pedestal (310), the second hole (313) is formed on one side of the pedestal (310) in front of the guide means (330) , and a third hole (331) is formed in the guide means (330) opposite the second hole (313). A portion of the guide is formed on either side of the guide means (330) adjacent the periphery of the third hole (331) in a circumferential direction to the surface of the reel (300). In this personification, the guide portion is a spiral groove (333). After passing through the first hole (311), the second hole (313) and the third (331), the suspension cord (110) is spirally wound along the spiral groove (333), to wind up gently on the surface of the spool (300). Additionally, in order to automatically and smoothly accommodate the suspension cord (110), the tensioner (301) is formed in position where the spool (300) winds the suspension cord (110). The diameter of the tensioner (301) increases along the length of the spool (300) to finish pivoting in the pedestal (310). As such, when the suspension reel (110) is wound to the reel (300) along the spiral slot (333), and due to the influence of the gravity of the blind, the suspension cord (110) is wound on the spool (300) it slides to the tensioner (301) with a small diameter, in such a way that the suspension cord (110) can be accommodated on the reel (300) automatically and in sequence.

In addition, the accommodation of the annular space formed between the cover (800) and the spool (300) is used to accommodate the suspension cord (110) wound around the spool (300), and the space between the cover (800) and the the spool (300) is slightly larger than the diameter of the suspension cord (110) and smaller than twice the diameter of the suspension cord (110), such that the suspension cord (110) is wound to the spool ( 300) sequentially and smoothly, and prevents it from being wound onto the reel (300) so that they overlap.

Please refer to Figs. 4A and 4B of the schematic view of the connection and the schematic view of the operation of the adjustment means and the pedestal in the first embodiment of the present invention. As shown in Figs. 2, 4A and 4B, the adjustment means (500) include a fixed plate (510), a tablet (530), an elastic element (550) and a handle. The fixed plate (510) has a protrusion. { 511) that extends on both sides of it. The hole (317) opens respectively on the two side walls (315) of the pedestal (310), in such a way that the protuberances (511) of the fixed plate (510) are bent in the holes (317), and then the Fixed plate (510) is bent in pedestal (310). A through hole (513) opens in the fixed plate (510) along the side wall (315). The tablet (530) is an arc plate (531), and the slide bar (533) extends from one side of the arc plate (531). The slide bar (533) penetrates through the through hole (513), so that the tablet (530) can slide up or down with respect to the fixed plate (510). When the fixed plate (510) is fixed to the pedestal (310), the tablet (530) presses against the surface of the reel (300).

The bolt hole (515) is forming on one side of the through hole (513), and the handle has a screw shaft (571). A screw thread is formed part of the surface of the shaft of the screw (571) to connect by means of this with the hole of the bolt (515). In addition, the free end of the screw shaft (571) has a retaining ring (573) that extends along the outer circumference of the screw shaft (571). The second hole (535) opens to one side of the slide bar (533) of the tablet (530), such that the retaining ring (573) of the screw shaft (571) passes through the second hole ( 535) and press against the circumference of the second hole (535), therefore the handle can be slid in in the second hole (535).

The elastic element (550) fits the handle and is placed between the tablet (530) and the fixed plate (510), so that the tablet (530) and the fixed plate (510) compress it to generate elastic force, which leads to the tablet (530) towards the spool (300). In this way, the tablet (530) makes constant pressure against the retaining ring (573), and against the surface of the reel (300), to create a wet effect through the corresponding friction force generated by the positive pressure in the surface of the reel (300), and reducing the torque when the spool (300) is rotated by each of the elastic elements (700) and the axis of rotation (910).

Accordingly, the arc plate (531) at the lower end of the tablet (530) can be pressed directly on the surface of the reel (300). However, in this embodiment, the leaf spring (537) extends respectively from the left side to the right side of the arc plate (531). The leaf springs (537) press against the spool (300), and adjust to the height of the tablet (530) by rotating the handle, to adjust the force applied by the leaf springs (537) by pressing the spool ( 300).

Therefore the torque relational expression Ts applied to the spool (300) by the elastic power element (700), the torque Tf applied to the spool (300) by the frictional force generated by the tablet (530) which presses the reel (300), and the torque Tc generated when the suspension cord (110) holds the reel (300) is Ts + Tf = Tc.

The rotation of the spool (300) is hindered by the torque Tf, thus it can be compensated with the torque Ts. Therefore, the torque Tf can be changed by means of the application force generated when the tablet (530) presses against the spool (300), thereby adjusting the torque of the spool (300). When the elastic element (700) has attenuated the elastic force due to long-term use, the torque Ts is reduced. The pressure applied to the reel (300) by the tablet (530) is reduced by adjusting the handle, to reduce the strength of resistance of the torque Tf on the reel (300). In such a manner, the torque Ts and the Tc can be compensated between them. On the other hand, when the blinds are installed due to the different sizes of windows, these must be cut properly, in this way the crossover torque Tc also changes; however, the torque Ts is generally constant. Therefore, when the torque Tc changes, the pressure applied to the reel (300) by the tablet (530) can be used to change the torque Tf. In the same way, the torque Ts and the Tc can be compensated between them.

Please refer to Fig. 5 of the schematic view of the connection of the adjustment means and the pedestal in the second embodiment of the present invention. As shown in Fig. 5, the fixed plate (510) and the pedestal (310) are formed integrally. Therefore, the through hole (318) and the bolt hole (319) open in the side wall of the pedestal (310) opposite the adjustment means (500), and the relationship between the pedestal (310) and the adjustment means (500) is the same as the above-mentioned personification so it will not be described again.

Please refer to Fig. 6 of the schematic view of the connection of the adjustment means and the pedestal in the third embodiment of the present invention. As shown in Fig. 6, the through hole (318) and the hole of the Bolt (319) are formed on one side of the pedestal (310). The adjustment means (500) include the tablet (530) and the handle (570). The tablet (530) has a slide bar (533) extending from one end to the other of this, where the bar (533) passes through the through hole (318), such that the tablet (530) it adjusts to the pedestal (310) and can slide vertically, and the lower end of the tablet (530) presses against the surface of the spool (300). The handle (570) has a screw shaft (571) extending from one end to the other thereof, and the screw shaft (571) is connected to the hole of the pin (319) and pivoted to the tablet (530) with the back end of it. The collar (575) is placed on the tablet (530) to prevent it from coming out of the screw shaft? / Rotating shaft ?? (571). In this way, the tablet (530) can adjust the pressure generated when it presses against the spool (300) by means of the rotation of the handle (570).

The pedestal, the spool and the guide means can be combined to form a rolling module of the suspension cord of a blind; said module is directed by the suspension cord or the elastic power element for rotating the suspension cord, and can commonly be used in a roller shutter structure with or without a suspension cord.

Therefore, the device for winding the blind suspension cord provided by the present invention can adjust the torque of the elastic power element to be suitable for the blinds of different sizes, and can also be used to reduce the limitation of the torque of the elastic power element when it decreases, in such a way that the applied torque increases to the blind by the elastic power element to compensate the attenuated elastic force. In addition, the device for winding the blind suspension cord according to the present invention is equally applicable to other types of blinds, including but not limited to curtains, cellular shutters and the like.

It is obvious, that the invention being described in this way, can be varied in many ways. Such variations are not considered as departures from the spirit and range of the invention, and such modifications, as is obvious, for someone skilled in the art, are thought to be included within the range of the following claims.

Claims (12)

CLAIMS What is claimed is:

1. - A device for winding the suspension cord of a blind, used to wind the suspension cord passing through at least one of the materials covering the blind, characterized in that it comprises: - an elastic power element; -a pedestal; - a reel, pivoted to the pedestal, where one end of the reel is connected to the elastic power element, such that the reel rotates and winds the suspension cord and the tensioner is formed on the surface of the reel; - guide means, having a portion for guiding the suspension cord to be wound onto the tensioner and accommodating the suspension cord along the reel in sequence; - an axis of rotation connected to the elements of elastic power and to the reel; and - adjustment means arranged on the pedestal, where the adjustment means move along a predetermined direction to press against the spool, to dampen the rotation of the spool and to compensate the torque applied to the spool by each of the elastic power element and the gravity applied to the reel by the material covering the blind.

2 - . 2 - A device for winding the suspension cord of a blind according to claim 1, further characterized in that the suspending cord passes through the pedestal and the guide means, and enters the guide portion.

3. - A device for winding the suspension cord of a blind according to claim 1, further characterized in that the guide portion is a spiral guide groove corresponding to the surface of the circumference of the reel, and the spiral guide groove guides the suspension cord to wind it to the spiral spool.

4 - . 4 - A device for winding the suspension cord of a blind according to claim 1, further characterized in that the axis of rotation passes through a predetermined part of the spool and the elastic power element.

5. - A device for winding the suspension cord of a blind according to claim 1, further characterized in that the adjustment means comprise: - a fixed plate on the pedestal - a tablet, pressed against the surface of the reel - a handle, which it has a screw axis extending from one end to the other of this, where the axis of the screw is connected to the fixed plate and to the tablet, and the distance between these are adjusted by means of the rotation of the handle; and - an elastic power element, disposed between the tablet and the fixed plate, applying constant force of the reel to the tablet.

6. - A device for winding the suspension cord of a blind according to claim 1, further characterized in that it comprises adjusting means: - a handle, having a screw axis extending from one end to the other thereof, where the screw shaft is connected to the pedestal; - a tablet, disposed at one end of the screw shaft opposite the pedestal, where the distance between the tablet and the pedestal is changed with the rotation of the handle; and - an elastic power element, disposed between the pedestal and the tablet, applying constant force of the reel to the tablet.

7. - A device for winding the suspension cord of a blind according to claim 1, further characterized in that the adjustment means I5 they comprise: - a puller, which has a screw shaft that extends from one end to the other, where the screw shaft is connected to the pedestal; and - a tablet, pivoted from one end to the other with a rotating shaft opposite the pedestal, where the distance between the tablet and the pedestal changes with the rotation of the handle.

8. - A device for winding the suspension cord of a blind according to claim 7, further characterized in that it comprises: a fixed plate, fixed to the pedestal to allow a predetermined part of it to slide to the pedestal, and so that the handle connects to the pedestal.

9. - A device for winding the suspension cord of a shutter according to claim 1, further characterized in that it comprises a cover, where one end is doballed on the pedestal and the other is pivoted to one end of the spool remote from the pedestal, such so that the spool rotates smoothly, and the accommodation space that is formed between the cover and the spool to accommodate the funnel suspension cord on the outer edge of the spool.

10. - A module for winding the blind suspension cord, used to wind the suspension cord through at least one of the materials of the blind comprising: - a pedestal; - a reel, pivoted to the pedestal to wind the suspension cord, where a tensioner is formed on the surface of the reel; guide means, having a guide portion for directing the suspension cord to wind up to the angle tensioner and accommodating the suspension cord along the reel in sequence; and - an axis of rotation, which passes through the reel and is used to drive the reel when it is rotated. I 6

11. - The module for winding the blind suspension cord, according to claim 10, further characterized in that the suspension cord passes through the pedestal and the guide means to enter the guide portion.

12. - The module for winding the blind suspension cord, according to claim 10, further characterized by comprising a cover, where one end is attached to the pedestal and the other is pivoted to one end of the spool remote from the pedestal, in such a way that the spool rotates smoothly, and the accommodation space that is formed between the cover and the spool serves to accommodate the funnel suspension cord to the outer edge of the spool.