A testing device for bead-cord controlled curtains

Abstract

The present invention belongs to the field of curtain testing and relates in particular to a test device for bead-cord controlled curtains, comprising a test frame and characterized in that the test frame is provided with a bead-cord drive mechanism, wherein the bead-cord drive mechanism pulls the A-side of the bead cord downwards to unfold the curtain and pulls the B-side of the bead cord downwards to close the curtain. The present invention can be applied to a variety of tests of bead-cord or pull-cord controlled curtains. The device can effectively test the real-time operation of the control unit for the bead cord or pull cord as well as the curtain body.

Description

Technical area

[0001] The present invention belongs to the field of curtain testing and, in particular, relates to a testing device for bead-controlled curtains. State of the art

[0002] Curtain products have become an indispensable part of furniture products. Due to their price advantage, beaded and pull-cord controlled curtains are the most popular curtain products. Due to their frequent use, the testing requirements have been standardized and the regular parameters have also been specified. To open or close beaded and pull-cord controlled curtains, the process must be repeated to check the opening or closing of the curtains. There is currently no well-developed device to test the actual operation of the curtains. Often, the testing must be performed manually. During manual testing, the test can be influenced by various factors. The strength or speed of the manual control cannot be effectively controlled and documented.Manual testing also requires personnel resources, as fully opening and closing the curtain requires multiple repetitions of pulling. The data from manual testing is incomplete and cannot effectively provide all the necessary data.

[0003] Patent CN 209 356 172 U discloses a comprehensive testing device for blinds and curtains, in which the bead string drive assembly uses the following scheme: After the bead string is suspended from the rotor, the second tension sleeve is moved to tension the bead string, and the bead string is rotated back and forth by the forward and reverse rotation of the second gear motor. This structure is complicated and requires the bead string to be tensioned. The shape and function of the bead string will be damaged over time. Content of the invention

[0004] The present invention provides a testing device for bead-controlled curtains.

[0005] The purpose of the present invention is achieved in the following way: See claims 1-8.

[0006] Unlike the prior art, the present invention provides a clamping mechanism for the A-side bead and the B-side bead to pull the bead down. Compared with the mechanism of the reference document, in which one side is clamped to move up and down and realizes opening and closing, the present invention eliminates the need for a tensioning mechanism. The present invention has a compact structure, and the testing process does not cause damage to the bead. Furthermore, the testing method of the present invention corresponds to the opening and closing steps. The testing data is more accurate and can therefore better reflect the quality of the product. Description of the characters

[0007] Fig. Figure 1 is a schematic representation of the present invention in its entirety. Fig. 2 is an enlarged view of the first clamping mechanism and the second clamping mechanism. Fig. 3 is a schematic representation of the back of Fig. 1. Fig. Figure 4 is a schematic diagram of the synchronization belt, synchronization block and upper carrier.

[0008] Of these, 1 is a test frame, 2 is the first clamping mechanism, 20 is the first clamping element, 21 is the second clamping element, 23 is an L-shaped split groove, 24 is a bead string clamping drive, 3 is the second clamping mechanism, 4 is a bead string raising and lowering drive mechanism, 40 is a sliding frame, 41 is a belt, 42 is a clamping and guiding rail, 43 is a mounting rail, 5 is a beam, 6 is a beam raising and lowering drive, 60 is a raising and lowering servo motor, 61 is a synchronous belt, 62 is a synchronous block, 63 is a positioning block, 64 is a guide rail for raising and lowering the upper beam, 7 is a touch screen operation panel, 9 is the PLC controller. Description of an embodiment

[0009] In the present invention, the technical terms used in this application have the usual meaning as understood by one of ordinary skill in the art to which the present invention pertains, unless expressly provided and limited otherwise. The terms "linked," "connection," "fixed," "set," etc., are to be understood in a broad sense. It may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection or an indirect connection via an intermediate medium; it may be a mechanical connection or an electrical connection. Unless expressly provided and limited otherwise, the first feature may be "above" or "below" the second feature, in direct contact with the first and second features, or in indirect contact via an intermediate medium.Furthermore, the first feature being "above" or "superior" or "on top of" the second feature may be understood to mean that the first feature is directly above or diagonally above the second feature, or it may simply mean that the first feature is horizontally higher than the second feature. The first feature being "below" or "below" or "beneath" the second feature may mean that the first feature is directly below or diagonally below the second feature, or it may simply mean that the first feature is horizontally smaller than the second feature. Relationship terms such as "first," "second," etc., are used only to distinguish one entity or operation from another and do not necessarily require or imply any such actual relationship or order between the entities or operations.The description uses terms such as "center", "horizontal", "vertical", "length", "width", "thickness", "height", "front", "back", "left" and "right", "top", "bottom", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "clockwise", "counterclockwise", and the like to indicate orientation or positional relationships based on those shown in the accompanying figures, are intended only to facilitate the description of the present invention and to simplify the description, and are not intended to mean or imply that the device or original referred to must be constructed in a particular orientation and operated in a particular orientation.

[0010] The technical solution of the present invention will be described clearly and completely below in conjunction with the attached figures and specific embodiments. As in the Fig.1-4, the testing apparatus for bead-driven curtains includes a test frame 1, the test frame 1 being provided with a bead-driven driving mechanism, the bead-driven driving mechanism pulling down the A side of the bead-driven curtain to unfold the curtain and the B side of the bead-driven curtain to close the curtain. Pulling down the A side of the bead-driven curtain unfolds the curtain. Pulling down the B side of the bead-driven curtain closes the curtain. The inward and outward positions of the A side and the B side may be as shown in the attached figures or opposite to those shown in the attached figures. Here, the bead-driven curtain refers to an object such as a pull cord or a string of beads that moves the curtain up and down.The A side of the pearl string and the B side of the pearl string only distinguish the relative positions of the pearl strings on both sides, and there is no position limitation. The present invention provides a corresponding clamping mechanism for the A side of the pearl string and the B side of the pearl string, and pulls the pearl string down, respectively. Compared with the mechanism of the reference document in which one side is clamped to move up and down and realizes closing and opening, the present invention does not need to establish a tensioning mechanism. The present invention has a compact structure, and the testing process does not cause damage to the pearl string. Furthermore, the testing method of the present invention corresponds to the opening and closing steps. The testing data is more accurate and can therefore better reflect the quality of the product.

[0011] The bead string drive mechanism shown includes a first clamping mechanism 2 for clamping the A side of the bead string and a second clamping mechanism 3 for clamping the B side of the bead string. The first clamping mechanism 2 and the second clamping mechanism 3 are driven by the bead rope raising and lowering drive mechanism 4 to move in a straight line in the direction of opening and closing the curtain. The first clamping mechanism 2 and the second clamping mechanism 3 can be driven by a bead string raising drive mechanism 4 or can be driven by corresponding bead string raising drive mechanisms 4. The structure of the first clamping mechanism 2 and the second clamping mechanism 3 can be based on existing conventional devices. Existing linear actuators can all fall within the scope of the bead string raising and lowering drive mechanism according to the invention.The structures of the first clamping mechanism 2 and the second clamping mechanism 3 are preferably the same, but may of course also be different.

[0012] The first clamping mechanism 2 and the second clamping mechanism 3 are arranged at the naturally slack position of the A side and the B side of the pearl string. The first clamping mechanism 2 and the second clamping mechanism 3 have the same structure. The first clamping structure includes a first clamping element 20 and a second clamping element 21, and an L-shaped split groove 23 exists between the first clamping element 20 and the second clamping element 21. The L-shaped split groove 23 includes an opening slot for the pearl string entry and a clamping slot for clamping the pearl string. The first clamping element 20 or the second clamping element 21, or both, are driven by the pearl string clamping mechanism 24 so that the width of the clamping groove varies to clamp or release the pearl string.The natural sag position here refers to the position of the bead string in its natural sag state when the curtain is hung vertically. When the curtain is hung vertically, the A side of the bead string and the B side of the bead string pass through the L-shaped split groove 23 of the first clamping element 20 and the second clamping element 21, respectively.

[0013] The bead string clamp drive mechanism 24 is a pneumatic cylinder. The first clamping element 20 is fixedly attached to the fixed end of the pneumatic cylinder, and the second clamping element 21 is fixedly connected to the movable end of the pneumatic cylinder. The pneumatic cylinder is controlled by a pneumatic solenoid valve connected to an external compressed air line. The first clamping element 20 may be a block structure, and the second clamping element 21 may be an L-shaped block. Of course, a double-ended cylinder can also be selected, and the first clamping element 20 and the second clamping element 21 are connected to two movable ends of the double-ended cylinder in opposite directions of movement.

[0014] The first clamping mechanism 2 and the second clamping mechanism 3 are both provided on the same slide frame 40 of the bead string lifting and driving mechanism 4, and the first clamping mechanism 2 and the second clamping mechanism 3 are provided at different, offset heights in the bead string lifting and driving mechanism 4. The different positions of the A side and the B side of the bead string, the different clamping positions of the clamping mechanisms, and the different heights and offset positions allow for a larger space. As an example, the bead string lifting and driving mechanism 4 includes a rail or belt 41 and a slide frame 40 arranged thereon. The right side of the test frame 1 is provided with a vertical mounting rod 43 fixed to the test frame 1 and a vertical clamping and guiding rail 42. The mounting rod 43 is provided with a servo-motor-driven belt 41 mechanism.The sliding frame 40 is attached on one side to the mechanism belt 41. The other two sides are slidably mounted on the clamping and guide rail 42. The clamping and lifting guide rail 42 can be attached to the mounting rail 43 and located on either side of the belt 41.

[0015] The test frame 1 is provided with an upper bracket 5 for connecting and fixing a curtain bracket to the top of the curtain. The upper bracket 5 is moved up and down on the test frame 1 by a drive mechanism 6 for raising and lowering the upper bracket provided on the test frame 1. The drive mechanism 6 for raising and lowering the upper bracket may be a conventional linear drive mechanism. The upper bracket 5 may be provided with a plurality of laterally movable bolts for fixing the curtain bracket. The upper bracket 5 is raised and lowered to facilitate the installation of hanging curtains. The present invention is simple and convenient. To install the curtains, an L-type mounting bracket can be used, or the curtain as a whole can be raised or lowered by raising and lowering the upper bracket 5, so that the height of the curtains can be arbitrarily adjusted.

[0016] The carrier lifting and lowering drive 6 includes a lifting servo motor 60 mounted on the test frame 1. The lifting servo motor 60 drives the output shaft to rotate.

[0017] The output shafts are set at both ends of the 61 upper synchronous belts. Each upper synchronous belt 61 drives the lower synchronous belt 61 below it via a synchronous belt 61. The two sides of the synchronous belt 61 are respectively attached to synchronous blocks 62, which are respectively attached to both ends of the lower beam. The two sides of the test frame 1 are also respectively provided with the guide rails for raising and lowering the upper beam 64. The synchronous blocks 62 are slidably provided on the guide rails for raising and lowering the upper beam 64. A positioning block 63 is provided at each of the upper and lower end positions corresponding to the synchronous blocks on the test frame.

[0018] The test frame 1 can be a frame structure constructed from profiles or other materials. The output shaft is provided on the top of the test frame 1. The synchronization block 62 is attached to the upper support 5 on one side and to the synchronization belt 61 on the other. A guide groove is provided in the central part, which interacts with the guide rails for raising and lowering the upper support 64. Of course, other conventional drive mechanisms such as stepper motors can also be used here.

[0019] The test frame 1 is equipped with a touchscreen control panel 7. The touchscreen control panel is electrically connected to a PLC controller 9. The lifting servomotor 60, the bead string clamp drive mechanism 24, and the bead string lifting and lowering drive mechanism 4 are all electrically connected to the PLC controller 9 and can be controlled by the touchscreen control panel 7. The touchscreen control panel 7 is equipped with a power button and an emergency stop button, as well as other parameters for setting speeds and the like. The electrical connection and the method of signal transmission between the touchscreen control panel, servomotors, PLC controller 9, cylinders, linear drive mechanism, and the control of the electrical device are state-of-the-art and will not be described in detail here.

[0020] Specific design: First, the upper beam 5 is raised and lowered under the control of the control panel to position the curtain at a suitable position. The signal is sent through the control panel to send instructions to the PLC controller 9 and then transmitted to the lifting servo motor 60. Both sides of the synchronous belt 61 drive the upper beam 5 along the guide rail to raise and lower the upper beam 64. The lifting speed of the upper beam 5 can be adjusted by transmitting instructions through the touchscreen control panel 7. The curtain support is suspended from the upper beam 5. The beaded string is placed in the slots of the clamps A and B in the natural sagging direction. The lifting servo motor 60 lifts the upper beam 5 to a suitable detection position.Position blocks 63 are provided at the upper and lower end positions of the upper support 5 to restrict the travel of the upper support 5.

[0021] When starting the test, a signal can be sent to the PLC controller 9 via the touchscreen control panel 7. The PLC controller 9 controls the cylinder of the first clamping mechanism 2 to begin clamping side A of the bead string. After that, the lifting servo motor 60 is controlled to start and drive the belt 41 to move downward. The slide frame 40 supports the first clamping mechanism 2 in the clamped state and the second clamping mechanism 3 in the released state to move downward together along the clamping lifting guide rail 42, and side A of the bead string is clamped to move downward, thereby unfolding the curtain. The movement stroke of the first clamping mechanism 2 is adjusted in relation to the length of the bead string.When the first clamping mechanism 2 is pulled down and the curtains are not fully unfolded, the first clamping mechanism 2 releases the bead string and slides upwards, repeating the process. The same principle applies when the curtain is closed: the first clamping mechanism 2 releases side A of the bead string, and the second clamping mechanism 3 clamps side B of the bead string and moves downwards along with the belt 41. When the curtain is not fully closed, the second clamping mechanism 3 releases the bead string and slides upwards, repeating the process. The movement stroke and speed can be controlled by specifying a specific command via the touchscreen control panel 7. The bead string raising and lowering drive mechanism 4 of the present invention is also provided with a position block 63, which stops out-of-range movements.If an anomaly occurs during the testing process, the emergency stop button on the control panel can be pressed. The testing device is safe and reliable.

[0022] The present invention can be applied to a variety of tests of beaded or pull-cord controlled curtains. The device can effectively test the real-time operation of the beaded or pull-cord control unit 9 and the curtain body. The testing process of the testing device corresponds to the actual use process. By adjusting the lifting speed of the first clamping mechanism 2 and the second clamping mechanism 3, it can be tested whether the service life of the control unit 9 meets the requirements within the normal range. Long-term tensile tests can be performed. The number of times the curtains are opened and closed can be automatically documented.

[0023] The various technical features of the above-described embodiments can be combined in any combination. As long as there is no contradiction in the combination of these technical features, any single embodiment or any combination of various embodiments shall be considered within the scope of the present invention of the present application. Without departing from the overall concept of the present invention, the technical solutions and equivalent replacements or modifications according to the present invention, as well as various modifications and improvements made thereto, shall also be considered within the scope of the present invention. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] CN 209 356 172 U

[0003]

Claims

[1] Test device for bead-controlled curtains, comprising a test frame, characterized by that the test frame is provided with a bead string driving mechanism, wherein the bead string driving mechanism pulls the A side of the bead string downward to realize the unfolding of the curtain, pulls the B side of the bead string downward to realize the closing of the curtain. [2] Bead string controlled curtain testing device according to claim 1, characterized by that the shown bead string driving mechanism comprises a first clamping mechanism for clamping the A side of the bead string and a second clamping mechanism for clamping the B side of the bead string; and the first clamping mechanism and the second clamping mechanism are driven by the bead string raising and lowering driving mechanism to move in a straight line along the direction of opening and closing of the curtain. [3] Test device for bead-controlled curtains according to claim 2, characterized by that the first clamping mechanism and the second clamping mechanism are respectively arranged at the naturally slack position of the A side of the pearl string and the B side of the pearl string; the first clamping mechanism and the second clamping mechanism have the same structure, wherein the first clamping structure comprises a first clamping element and a second clamping element, and an L-shaped split groove is provided between the first clamping element and the second clamping element, wherein the L-shaped split groove includes a slit that allows the pearl string to move in a straight line in the opening and closing direction. [4] Test device for bead-controlled curtains according to claim 3, characterized by that the L-shaped split groove includes an opening slot for the entry of the pearl cord and a clamping slot for clamping the pearl cord. [5] Test device for bead-controlled curtains according to claim 3 or 4, characterized by that either the first clamping member or the second clamping member or both are driven by the bead string clamping drive mechanism to move and make a change in the width of the clamping slot to clamp or release the bead string. [6] Test device for bead-controlled curtains according to claim 3, characterized bythat the bead string clamping drive mechanism is a cylinder, the first clamping element is fixedly provided at the fixing end of the cylinder, the second clamping element and the movable end of the cylinder are fixedly connected; the cylinder is controlled by a pneumatic solenoid valve connected to an external compressed air line and / or that the first clamping mechanism and the second clamping mechanism are both arranged on a sliding frame of the same bead string raising and lowering drive mechanism, and that the first clamping mechanism and the second clamping mechanism are arranged offset at different heights of the bead string raising and lowering drive mechanism. [7] Testing device for bead-controlled curtains according to one of claims 1 to 6, characterized bythat the test frame is provided with an upper beam for connecting a curtain fastening bracket at the upper end of the curtain, the upper beam being driven by the drive mechanism provided on the test frame for raising and lowering the upper beam. [8] Test device for bead-controlled curtains according to claim 7, characterized by that the lifting and driving mechanism of the upper beam comprises a lifting servo motor mounted on a test frame. [9] Test device for bead-controlled curtains according to claim 8, characterized byin that the lifting servo motor drives the output shaft for rotation, which is provided at each end with upper timing pulleys and each of the upper timing pulleys drives the rotation of the lower timing pulleys below it via timing belts, wherein it is preferably provided that the two sides of the timing belt are each fastened to synchronizer blocks, which are each fastened to both ends of the lower support, wherein in particular it is provided that the synchronizer blocks are slidably mounted on the guide rails for lifting the upper support, wherein the upper and lower end positions corresponding to the synchronizer blocks on the test frame are each provided with a position block, and / or that the two sides of the test frame are also each provided with guide rails for lifting the upper support. [10] A test device for bead-controlled curtains according to claim 8 or 9, characterized bythat the test frame is provided with a touch screen control panel and the touch screen control panel is electrically connected to a PLC controller.

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