A telescopic curtain rail

Abstract

The present invention discloses a telescopic curtain rail. Customers can, according to their own needs, control the telescopic amount of the annular conveyor belt between the driving wheel and the guide wheel and the telescopic amount of the annular telescopic belt between the first fixed pulley and the second fixed pulley, so that the inner guide rail can be telescoped along the outer guide rail to adjust the length of the guide rail, with very high adaptability and usability. By setting the annular telescopic belt as a belt section and a rope section, the driving wheel is driven through the belt section, reducing transmission errors and displacement, solving the problems of easy slipping between the driving wheel and the rope, as well as telescoping and limited transmission, and accurately transmitting torque. This invention is used in the field of curtains.

Description

Technical Field

[0001] The present invention relates to the field of curtains, and particularly to a telescopic curtain rail. Background Art

[0002] A curtain is a household item installed on a window for shading. Ordinary curtain fabrics are usually hung and opened and closed by pulling with both hands; using the method of manually pulling the curtain is very inconvenient when in use, making it difficult for many people with inflexible hands and feet to open and close.

[0003] At present, most curtain rails on the market need to measure the size first and then produce and manufacture according to the size or need to be modified by professionals during specific applications, and the customized production cycle is relatively long. Moreover, once the length of the curtain rail is determined, it can only be used on the corresponding window. Once the window size changes due to reasons such as decoration, the electric curtain rail of the original size will no longer be usable and cannot be adjusted, resulting in waste.

[0004] Moreover, most of the existing transmission structures inside the curtain are driven by ropes and wheels. However, the ropes and wheels are prone to slipping, with insufficient bearing capacity, and moreover, using ropes will result in transmission errors and displacement, causing the curtain to often malfunction. Summary of the Invention

[0005] The purpose of the present invention is to provide a telescopic curtain rail with good transmission performance and telescopic function.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A telescopic curtain rail, which includes a guide rail and an endless conveyor belt. The guide rail includes an inner guide rail and an outer guide rail. One end of the inner guide rail is sleeved inside the outer guide rail, and the inner guide rail and the outer guide rail are slidably connected. The other end of the inner guide rail is horizontally installed with a driving wheel, and the tail end of the outer guide rail is vertically installed with a guide wheel. The guide wheel includes a first guide wheel and a second guide wheel. A fixed pulley is horizontally installed on the guide rail between the guide wheel and the driving wheel. The fixed pulley includes a first fixed pulley and a second fixed pulley installed in the same plane. The first fixed pulley is installed at one end inside the outer guide rail, and the second fixed pulley is installed at one end outside the inner guide rail. The first fixed pulley is located between the driving wheel and the second fixed pulley. The endless conveyor belt includes a belt section and a rope section. The endless conveyor belt sequentially bypasses the driving wheel, the first guide wheel, the first fixed pulley, the second fixed pulley, the first fixed pulley, and the second guide wheel. The belt section moves around the driving wheel, and the rope section sequentially moves around the first guide wheel, the first fixed pulley, the second fixed pulley, the first fixed pulley, and the second guide wheel.

[0008] As a further improvement of the technical solution of the present invention, it further includes two trolleys that can slide along the guide rail and are installed in the guide rail, and the belt section, the two trolleys, and the rope section are connected to form an endless conveyor belt.

[0009] As a further improvement of the technical solution of the present invention, the belt section bypasses the driving wheel, and both ends of the belt section are respectively fixed on the same side of the two trolleys. The rope section sequentially bypasses the first guide wheel, the first fixed pulley, the second fixed pulley, the first fixed pulley, and the second guide wheel, and both ends of the rope section are respectively fixed on the same side of the two trolleys.

[0010] As a further improvement of the technical solution of the present invention, both of the two trolleys include a main body and a fixing structure. The fixing structure includes an engaging portion located in the guide rail and a pressing plate extending from the bottom end of the guide rail. The belt section is installed between the main body and the engaging portion, and the engaging portion meshes with the belt section. The pressing plate is fixed to the main body through a tightening device. By tightening or loosening the tightening device, the belt section is locked or fastened to the engaging portion.

[0011] As a further improvement of the technical solution of the present invention, the main body includes a groove structure located in the guide rail and a bottom structure extending outside the guide rail, and the engaging portion is installed in the groove structure.

[0012] As a further improvement of the technical solution of the present invention, the tightening device is a screw, and the pressing plate and the bottom structure are fixed by the screw.

[0013] As a further improvement of the technical solution of the present invention, the driving wheel is a synchronous wheel, the driving wheel is provided with a bayonet connected to the motor, and the belt section is a synchronous belt meshing with the synchronous wheel.

[0014] As a further improvement of the technical solution of the present invention, the diameters of the first guide wheel and the second guide wheel are equal to the distance from the bottom end of the driving wheel to the central plane of the fixed pulley.

[0015] As a further improvement of the technical solution of the present invention, the amount of expansion and contraction of the endless conveyor belt between the driving wheel and the first guide wheel is equal to the amount of expansion and contraction of the endless conveyor belt between the first fixed pulley and the second fixed pulley.

[0016] Advantages of the present invention: For this telescopic curtain rail, the customer can control the amount of expansion and contraction of the endless conveyor belt between the driving wheel and the guide wheel and the amount of expansion and contraction of the endless telescopic belt between the first fixed pulley and the second fixed pulley according to their own needs, so that the inner guide rail can be telescoped along the outer guide rail to adjust the length of the guide rail. The adaptability and usability are very high. By setting the endless telescopic belt as a belt section and a rope section, the driving wheel drives through the belt section, reducing the transmission error and displacement, solving the problems of easy slipping between the driving wheel and the rope, as well as telescopic and limited transmission problems, and accurately transmitting torque. Description of the Drawings

[0017] The present invention will be further described below in conjunction with the accompanying drawings:

[0018] Figure 1 It is the front elevation sectional view of the embodiment of the present invention;

[0019] Figure 2 It is the top plan sectional view of the embodiment of the present invention;

[0020] Figure 3 It is the top plan sectional view of the fixed pulley area of the embodiment of the present invention;

[0021] Figure 4 It is the A-A sectional view of the embodiment of the present invention Figure 1

[0022] Among them:

[0023] Guide rail 100, inner guide rail 101, outer guide rail 102;

[0024] Trolley 200, main body 201, engaging portion 202, pressing plate 203, screw 204;

[0025] Endless conveyor belt 300, belt section 301, rope section 302;

[0026] Drive wheel 400;

[0027] Guide wheel 500, first guide wheel 501, second guide wheel 502;

[0028] Fixed pulley 600, first fixed pulley 601, second fixed pulley 602. Specific embodiments

[0029] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be construed as a limitation on the protection scope of the present invention.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention.

[0031] ​In the description of the present invention, the meaning of "several" is one or more, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, while understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "install", "connect", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above terms in the present invention in combination with the specific content of the technical solution.

[0033] Refer to Figures 1 - 3 , a telescopic curtain rail, which includes a guide rail 100 and an endless conveyor belt 300. The guide rail 100 includes an inner guide rail 101 and an outer guide rail 102. One end of the inner guide rail 101 is sleeved inside the outer guide rail 102, and the inner guide rail 101 and the outer guide rail 102 are slidably connected. The other end of the inner guide rail 101 is horizontally installed with a driving wheel 400. The tail end of the outer guide rail 102 is vertically installed with a guide wheel 500. The guide wheel 500 includes a first guide wheel 501 and a second guide wheel 502. A fixed pulley 600 is horizontally installed on the guide rail between the guide wheel 500 and the driving wheel 400. The fixed pulley 600 includes a first fixed pulley 601 and a second fixed pulley 602 installed in the same plane. The first fixed pulley 601 is installed at one end inside the outer guide rail 102, and the second fixed pulley 602 is installed at one end outside the inner guide rail 101. The first fixed pulley 601 is located between the driving wheel 400 and the second fixed pulley 602. The endless conveyor belt 300 includes a belt section 301 and a rope section 302. The endless conveyor belt 300 sequentially bypasses the driving wheel 400, the first guide wheel 501, the first fixed pulley 601, the second fixed pulley 602, the first fixed pulley 601, and the second guide wheel 502. The belt section 301 moves around the driving wheel 400, and the rope section 302 sequentially moves around the first guide wheel 501, the first fixed pulley 601, the second fixed pulley 602, the first fixed pulley 601, and the second guide wheel 502.

[0034] It can be understood that the telescopic amount of the endless conveyor belt 300 between the driving wheel 400 and the first guide wheel 501 is equal to the telescopic amount of the endless conveyor belt 300 between the first fixed pulley 601 and the second fixed pulley 602.

[0035] When the guide rail 100 shortens, the endless conveyor belt 300 located between the driving wheel 400 and the guide wheel 500 shortens, the inner guide rail 101 slides inwards relative to the outer guide rail 102, the distance between the first fixed pulley 601 and the second fixed pulley 602 becomes longer, the rope section 302 between the first fixed pulley 601 and the second fixed pulley 602 elongates, and the shortening amount of the endless conveyor belt 300 between the driving wheel 400 and the first guide wheel 501 is equal to the elongation amount of the rope section 302 between the first fixed pulley 601 and the second fixed pulley 602. In this way, when the guide rail 100 expands and contracts, the length of the endless conveyor belt 300 between the two can be kept consistent, ensuring synchronous adjustment. When the guide rail 100 elongates, the endless conveyor belt 300 located between the driving wheel 400 and the guide wheel 500 elongates, the inner guide rail 101 slides outwards relative to the outer guide rail 102, the distance between the first fixed pulley 601 and the second fixed pulley 602 becomes shorter, the rope section 302 between the first fixed pulley 601 and the second fixed pulley 602 shortens, and the elongation amount of the endless conveyor belt 300 between the driving wheel 400 and the first guide wheel 501 is equal to the shortening amount between the first fixed pulley 601 and the second fixed pulley 602. As shown in the appendix Figure 3 As shown, the diameter of the first fixed pulley 601 is larger than that of the second fixed pulley 602, so as to ensure that the rope section 302 is first wound around the first fixed pulley 601.

[0036] Optionally, the driving wheel 400 is a synchronous wheel, and the driving wheel 400 is provided with a bayonet connected to the motor. The diameters of the first guide wheel 501 and the second guide wheel 502 are equal to the distance from the bottom end of the driving wheel 400 to the central plane of the fixed pulley 600. The belt section 301 is preferably a timing belt meshing with the synchronous wheel, and the timing belt can accurately transmit torque and has good load-bearing capacity.

[0037] As shown in the appendix Figure 1 , in this embodiment, it further includes two trolleys 200 that can slide along the guide rail and are installed in the guide rail 100. The belt section 301, the two trolleys 200, and the rope section 302 are connected to form an endless conveyor belt 300. Among them, the belt section 301 bypasses the driving wheel 400, and both ends of the belt section 301 are respectively fixed on the same side of the two trolleys 200. The rope section 302 successively bypasses the first guide wheel 501, the first fixed pulley 601, the second fixed pulley 602, the first fixed pulley 601, and the second guide wheel 502, and both ends of the rope section 302 are respectively fixed on the same side of the two trolleys 200. The two trolleys 200 are controlled to slide through the belt section 301 and the rope section 302, thereby controlling the opening and closing of the curtain.

[0038] Specifically, referring to the appendix Figure 4, both trolleys 200 include a main body 201 and a fixing structure. The fixing structure includes an engaging portion 202 located within the guide rail 100 and a pressing plate 203 extending from the bottom end of the guide rail 100. A belt section 301 is installed between the main body 201 and the engaging portion 202. The engaging portion 202 meshes with the belt section 301. The pressing plate 203 is fixed to the main body 201 by screws 204. By tightening or loosening the screws 204, the belt section 301 is locked or fastened to the engaging portion 202. Further, the main body 201 includes a groove structure located within the guide rail 100 and a bottom structure extending outside the guide rail 100, and the engaging portion 202 is installed within the groove structure.

[0039] The trolley 200 meshes through the engaging portion 202 and the belt section 301, and then the pressing plate 203 and the main body 201 are fixed by the screws 204. When the distance of the trolley 200 does not meet the requirements, the screws 204 can be loosened, the main body 201 and the fixing structure are loosened, and the belt section 301 is disengaged from the engaging portion 202. At this time, the trolley 200 can be pushed to slide, and the distance of the trolley 200 can be adjusted to the required position. When the distance of the trolley 200 is adjusted, the screws 204 are tightened, the belt section 301 meshes and locks with the engaging portion 202, and the installation and adjustment of the trolley 200 are very convenient.

[0040] For this telescopic curtain rail, the customer can control the telescopic amount of the endless conveyor belt 300 between the driving wheel 400 and the guide wheel 500 and the telescopic amount of the endless telescopic belt 300 between the first fixed pulley 601 and the second fixed pulley 602 according to their own needs, so that the inner guide rail 101 can be telescoped along the outer guide rail 102 to adjust the length of the guide rail 100. The adaptability and usability are very high. The customer can adjust the length of the guide rail by themselves, which is simple and convenient. Moreover, the size is not customized, and the applicability and performance are very high. At the same time, by setting the endless telescopic belt 300 as the belt section 301 and the rope section 302, the driving wheel 400 is driven by the belt section 301, reducing the transmission error and displacement, solving the problems of easy slipping between the driving wheel 400 and the rope, as well as the telescopic and limited transmission problems, and accurately transmitting the torque.

[0041] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. A telescopic curtain rail, characterized in that: It includes a guide rail and an endless conveyor belt. The guide rail includes an inner guide rail and an outer guide rail. One end of the inner guide rail is sleeved inside the outer guide rail, and the inner guide rail and the outer guide rail are slidably connected. The other end of the inner guide rail is horizontally installed with a driving wheel. The tail end of the outer guide rail is vertically installed with a guiding wheel. The guiding wheel includes a first guiding wheel and a second guiding wheel. A fixed pulley is horizontally installed on the guide rail between the guiding wheel and the driving wheel. The fixed pulley includes a first fixed pulley and a second fixed pulley installed in the same plane. The first fixed pulley is installed at one end inside the outer guide rail, and the second fixed pulley is installed at one end outside the inner guide rail. The first fixed pulley is located between the driving wheel and the second fixed pulley. The endless conveyor belt includes a belt section and a rope section. The endless conveyor belt sequentially bypasses the driving wheel, the first guiding wheel, the first fixed pulley, the second fixed pulley, the first fixed pulley, and the second guiding wheel. The belt section moves around the driving wheel, and the rope section sequentially moves around the first guiding wheel, the first fixed pulley, the second fixed pulley, the first fixed pulley, and the second guiding wheel; It further includes two trolleys that can slide along the guide rail and are installed inside the guide rail. The belt section, the two trolleys, and the rope section are connected to form an endless conveyor belt; Both of the two trolleys include a main body and a fixing structure. The fixing structure includes an engaging portion located inside the guide rail and a pressing plate extending from the bottom end of the guide rail. The belt section is installed between the main body and the engaging portion. The engaging portion meshes with the belt section. The pressing plate is fixed to the main body through a tightening device. By tightening or loosening the tightening device, the belt section is locked or fastened to the engaging portion; The driving wheel is a synchronous wheel, and the driving wheel is provided with a bayonet connected to the motor. The belt section is a synchronous belt meshing with the synchronous wheel; The telescopic amount of the endless conveyor belt between the driving wheel and the first guiding wheel is equal to the telescopic amount of the endless conveyor belt between the first fixed pulley and the second fixed pulley.

2. The telescopic curtain rail according to claim 1, wherein: The belt section bypasses the driving wheel, and both ends of the belt section are respectively fixed on the same side of the two trolleys. The rope section sequentially bypasses the first guiding wheel, the first fixed pulley, the second fixed pulley, the first fixed pulley, and the second guiding wheel, and both ends of the rope section are respectively fixed on the same side of the two trolleys.

3. The telescopic curtain rail according to claim 2, characterized in that: The main body includes a groove structure located inside the guide rail and a bottom structure extending outside the guide rail. The engaging portion is installed inside the groove structure.

4. The telescopic curtain rail according to claim 3, wherein: The tightening device is a screw, and the pressing plate and the bottom structure are fixed through the screw.

5. The telescopic curtain rail according to claim 1, wherein: The diameters of the first guiding wheel and the second guiding wheel are equal to the distance from the bottom end of the driving wheel to the central plane of the fixed pulley.

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