CN220552599U - Detection equipment for bead rope controlled curtain - Google Patents
Detection equipment for bead rope controlled curtain Download PDFInfo
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- CN220552599U CN220552599U CN202321905850.7U CN202321905850U CN220552599U CN 220552599 U CN220552599 U CN 220552599U CN 202321905850 U CN202321905850 U CN 202321905850U CN 220552599 U CN220552599 U CN 220552599U
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- 239000011324 bead Substances 0.000 title claims abstract description 114
- 238000001514 detection method Methods 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 129
- 238000012360 testing method Methods 0.000 claims abstract description 48
- 230000001360 synchronised effect Effects 0.000 claims description 27
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 9
- 238000009434 installation Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000003028 elevating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
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Abstract
The utility model provides a detection device for a bead rope controlled curtain, which comprises a test frame, wherein a bead rope driving mechanism is arranged on the test frame, and the bead rope driving mechanism respectively pulls a bead rope A side to move downwards to realize curtain unfolding and a bead rope B side to move downwards to realize curtain closing. The bead rope driving mechanism comprises a first clamping mechanism used for clamping the side A of the bead rope and a second clamping mechanism used for clamping the side B of the bead rope; the first clamping mechanism and the second clamping mechanism are driven by the bead rope lifting driving mechanism to linearly move along the opening and closing direction of the curtain. The utility model respectively arranges respective clamping mechanisms on the side A of the bead rope and the side B of the bead rope, and respectively pulls the bead rope downwards. The utility model does not need to arrange a tensioning mechanism, has compact structure, and can not damage the chain beads in the testing process. In addition, the testing process is consistent with the opening and closing operation steps when the curtain works, the testing data can be more accurate, and the quality of products can be reflected better.
Description
Technical Field
The utility model belongs to the field of curtain detection, and particularly relates to a detection device for a bead rope controlled curtain.
Background
In life, curtain products become an indispensable part of furniture products, especially curtain products controlled by pull beads and pull ropes are most popular due to the advantages of the price, and the requirements on the testing of the curtain products are more standard and the conventional parameters are more refined due to the maximum use amount of the curtain products; when the curtain controlled by the bead wire or the bead rope is retracted and extended, the curtain needs to be repeatedly operated to control the curtain to be extended or rolled, and the current imperfect equipment is detected according to the actual operation mode of the curtain, and manual detection is usually needed; the manual detection has the defects that the influence factors are too large, the force or the pulling speed cannot be effectively controlled and recorded, the manual detection is relatively occupied, the normal retraction operation action can be completed only by repeating for several times, the data is incomplete during the manual operation, and the needed data cannot be effectively fed back.
Patent CN209356172U discloses a shutter curtain comprehensive test device, wherein the scheme that the driving assembly of the bead chain adopts is: after the bead chain is hung on the rotating wheel, the second clamping sleeve is moved to tension the bead chain, and the bead chain can rotate back and forth through the positive and negative rotation of the second gear motor. The structure needs to tension the bead chain, is complex, and has damage to the shape and function of the bead chain for a long time.
Disclosure of Invention
The utility model provides a detection device for a bead rope controlled curtain.
The object of the utility model is achieved in the following way: the utility model provides a detection equipment of pearl rope control (window) curtain, includes the test frame, set up pearl rope actuating mechanism on the test frame, pearl rope actuating mechanism pulls pearl rope A side down to remove respectively and realizes that the (window) curtain is expanded, pearl rope B side down removes and realizes that the (window) curtain is closed.
The bead rope driving mechanism comprises a first clamping mechanism used for clamping the side A of the bead rope and a second clamping mechanism used for clamping the side B of the bead rope; the first clamping mechanism and the second clamping mechanism are driven by the bead rope lifting driving mechanism to linearly move along the opening and closing direction of the curtain.
The first clamping mechanism and the second clamping mechanism are respectively positioned at the positions of the side A of the bead rope and the side B of the bead rope which naturally droop; the first clamping mechanism and the second clamping mechanism are identical in structure, the first clamping mechanism comprises a first clamping piece and a second clamping piece, an L-shaped clearance groove exists between the first clamping piece and the second clamping piece, the L-shaped clearance groove comprises an opening groove for enabling a bead rope to enter and a clamping groove for clamping the bead rope, and any one or both of the first clamping piece and the second clamping piece are driven to move by a bead rope clamping driving mechanism so that the width of the clamping groove is changed to clamp or loosen the bead rope.
The bead rope clamping driving mechanism is an air cylinder, the first clamping piece is fixedly arranged at the fixed end of the air cylinder, and the second clamping piece is fixedly connected with the moving end of the air cylinder; the cylinder is controlled by a pneumatic electromagnetic valve, and the pneumatic electromagnetic valve is externally connected with an air pipe with pressure.
The first clamping mechanism and the second clamping mechanism are arranged on the sliding frame of the same bead rope lifting driving mechanism, and the first clamping mechanism and the second clamping mechanism are arranged in a staggered mode and different in height.
The upper beam of the curtain mounting frame used for connecting the upper end of the curtain is arranged on the test frame, and is driven by an upper beam lifting driving mechanism arranged on the test frame to lift on the test frame.
The upper beam lifting driving mechanism comprises a lifting servo motor arranged on the test frame, the lifting servo motor drives the output shaft to rotate, two ends of the output shaft are respectively provided with an upper synchronous pulley, and each upper synchronous pulley drives a lower synchronous pulley below to rotate through a synchronous belt; the synchronous belts at the two sides are respectively fixedly provided with a synchronous block, and the two ends of the upper beam are respectively fixed with the synchronous blocks; upper Liang Shengjiang guide rails are respectively arranged on two sides of the test frame, and the synchronizing blocks are arranged on the upper beam lifting guide rails in a sliding manner; and the upper limit position and the lower limit position of the test frame corresponding to the synchronous block are respectively provided with a limiter.
A touch screen control panel is arranged on the test frame and is electrically connected with the PLC; the bead rope driving mechanism is electrically connected with the PLC.
Compared with the prior art, the utility model has the advantages that the clamping mechanisms are respectively arranged on the side A of the bead rope and the side B of the bead rope, and the bead rope is respectively pulled downwards. Compared with a mechanism for realizing closing and opening by up-and-down movement of one side of the document clamping, the utility model does not need to arrange a tensioning mechanism, has compact structure and can not damage the chain beads in the testing process. In addition, the testing process is consistent with the opening and closing operation steps when the curtain works, the testing data can be more accurate, and the quality of products can be reflected better.
Drawings
Fig. 1 is a schematic overall view of the present utility model.
Fig. 2 is an enlarged view of the first clamping mechanism and the second clamping mechanism.
Fig. 3 is a rear schematic view of fig. 1.
Fig. 4 is a schematic view of a timing belt and a timing block and upper beam.
Fig. 5 is a top view of the present utility model.
The device comprises a test frame 1, a first clamping mechanism 20, a second clamping member 21, an L-shaped clearance groove 23, a bead rope clamping driving mechanism 24, a second clamping mechanism 3, a bead rope lifting driving mechanism 4, a sliding frame 40, a belt 41, a clamping lifting guide rail 42, a mounting rod 43, a top beam 5, a top beam lifting driving mechanism 6, a lifting servo motor 60, a synchronous belt 61, a synchronous block 62, a limit stopper 63, a top beam lifting guide rail 64, a touch screen control panel 7 and a PLC controller 9.
Detailed Description
In the present utility model, unless explicitly specified and defined otherwise, technical terms used in the present application should be construed in a general sense as understood by those skilled in the art to which the present utility model pertains. The terms "connected," "fixedly," "disposed" and the like are to be construed broadly and may be fixedly connected, detachably connected or integrally formed; can be directly connected or indirectly connected through an intermediate medium; either mechanically or electrically. Unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or in indirect contact via an intermediary. Moreover, a first feature being "above" or "over" or "upper" a second feature may be viewed as being directly above or obliquely above the second feature, or merely indicating that the first feature is higher in level than the second feature. The first feature being "under" or "beneath" or "under" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is level less than the second feature. Relational terms such as first, second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Terms such as "center", "transverse", "longitudinal", "length", "width", "thickness", "height", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "clockwise", "counterclockwise", etc. used in the description are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element in question must have a particular orientation, be constructed and operated in a particular orientation.
The technical scheme of the present utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. As shown in fig. 1-5, a detection device for controlling a curtain by using a bead rope comprises a test frame 1, wherein a bead rope driving mechanism is arranged on the test frame 1, and the bead rope driving mechanism respectively pulls a bead rope A side to move downwards to realize curtain unfolding, and a bead rope B side to move downwards to realize curtain closing. The side A of the bead rope is pulled downwards, and the curtain is unfolded. The side B of the bead rope is pulled downwards, and the curtain is closed. The positions of the sides A and B may be the same as or opposite to those shown in the drawings. The bead rope driving mechanism can be electrically connected with the PLC. The bead rope refers to an object such as a stay rope or a chain bead for driving the curtain to lift. The beaded rope a side and the beaded rope B side are merely for distinguishing the relative positions of the beaded ropes on both sides, and are not limited in position. The utility model respectively arranges respective clamping mechanisms on the side A of the bead rope and the side B of the bead rope, and respectively pulls the bead rope downwards. Compared with a mechanism for realizing closing and opening by up-and-down movement of one side of the document clamping, the utility model does not need to arrange a tensioning mechanism, has compact structure and can not damage the chain beads in the testing process. In addition, the testing process is consistent with the opening and closing operation steps when the curtain works, the testing data can be more accurate, and the quality of products can be reflected better.
The bead rope driving mechanism comprises a first clamping mechanism 2 used for clamping the side A of the bead rope and a second clamping mechanism 3 used for clamping the side B of the bead rope; the first clamping mechanism 2 and the second clamping mechanism 3 are driven by the bead rope lifting driving mechanism 4 to linearly move along the opening and closing direction of the curtain. The first clamping mechanism 2 and the second clamping mechanism 3 can be driven by one bead rope lifting driving mechanism 4, and can also be driven by the respective bead rope lifting driving mechanisms 4. The first clamping mechanism 2 and the second clamping mechanism 3 can be constructed by adopting the existing common clamps. The existing linear driving mechanism can be within the protection scope of the bead rope lifting mechanism. The first clamping mechanism 2 and the second clamping mechanism 3 are preferably identical in structure, but may be different.
The first clamping mechanism 2 and the second clamping mechanism 3 are respectively positioned at positions where the side of the bead rope A and the side of the bead rope B naturally droop; the first clamping mechanism 2 and the second clamping mechanism 3 are identical in structure, the first clamping mechanism comprises a first clamping piece 20 and a second clamping piece 21, an L-shaped clearance groove 23 is formed between the first clamping piece 20 and the second clamping piece 21, the L-shaped clearance groove 23 comprises an opening groove for allowing a bead rope to enter and a clamping groove for clamping the bead rope, and either or both of the first clamping piece 20 and the second clamping piece 21 are driven to move by a bead rope clamping driving mechanism 24 so that the width of the clamping groove changes to clamp or unclamp the bead rope. The natural sagging position refers to a position in which the beaded rope naturally sags when the window covering is vertically placed. When the curtain is vertically placed, the side of the bead rope A and the side of the bead rope B respectively pass through the L-shaped clearance grooves 23 of the first clamping piece 20 and the second clamping piece 21. The first clamping member 20 and the second clamping member 21 can be made of rubber or a material such as PE with a certain elastic buffer, so as to avoid or reduce the damage of the bead rope in the clamping state.
The bead rope clamping driving mechanism 24 is an air cylinder, the first clamping piece 20 is fixedly arranged on the fixed end of the air cylinder, and the second clamping piece 21 is fixedly connected with the moving end of the air cylinder; the cylinder is controlled by a pneumatic electromagnetic valve, and the pneumatic electromagnetic valve is externally connected with an air pipe with pressure. The first clamping member 20 may be a block-shaped structure and the second clamping member 21 may be an L-shaped block. Of course, a double-ended cylinder may be selected, and the first clamping member 20 and the second clamping member 21 are respectively connected to two moving ends of the double-ended cylinder, which have opposite moving directions. The pneumatic electromagnetic valve is electrically connected with the PLC.
The first clamping mechanism 2 and the second clamping mechanism 3 are arranged on the sliding frame 40 of the same bead rope lifting driving mechanism 4, and the first clamping mechanism 2 and the second clamping mechanism 3 are arranged in a staggered mode and at different heights of the bead rope lifting driving mechanism 4. The positions of the side of the bead rope A and the side of the bead rope B are different, the clamping positions of the clamping mechanisms are different, the heights are different, and more space can be provided due to the staggered positions. The beaded rope elevator driving mechanism 4 comprises a track or belt 41 and a carriage 40 arranged thereon. In particular embodiments: the bead rope lifting driving mechanism 4 can be a belt 41 mechanism with a servo motor driving forward and reverse rotation. The right side of the test frame 1 is provided with a vertical installation rod 43 and a vertical clamping lifting guide rail 42, wherein the installation rod 43 is fixed with the test frame 1, and a belt 41 mechanism driven by a servo motor is arranged on the installation rod 43. One side of the carriage 40 is fixed to the belt 41 of the belt 41 mechanism, and the other two sides are slidably provided on the grip elevating rail 42. Wherein the clamp lift rail 42 may be provided on the mounting bar 43 and on both sides of the belt 41.
An upper beam 5 for connecting and fixing a curtain mounting frame at the upper end of a curtain is arranged on the test frame 1, and the upper beam 5 is driven by an upper beam lifting driving mechanism 6 arranged on the test frame 1 to lift on the test frame 1. The upper beam lifting driving mechanism 6 can be a conventional common linear driving mechanism. A plurality of laterally movable bolts may be provided on the upper beam 5 for securing the curtain mounting. The upper beam 5 is lifted for convenient installation of the hanging curtain. The utility model has simple and convenient curtain installation, can adopt the L-shaped installation rack for top installation, and can drive the whole curtain to lift by lifting the upper beam 5 so as to set the hanging height of the curtain at will. Hooks or other parts or mechanisms for fixing or suspending the upper end of the curtain can be arranged on the upper beam 5 according to the requirement.
The upper beam lifting driving mechanism 6 comprises a lifting servo motor 60 arranged on the test frame 1, the lifting servo motor 60 drives an output shaft to rotate, two ends of the output shaft are respectively provided with an upper synchronous belt 61 wheel, and each upper synchronous belt 61 wheel drives a lower synchronous belt 61 wheel below to rotate through the synchronous belt 61; the synchronous belts 61 on the two sides are respectively fixedly provided with a synchronous block 62, and the two ends of the upper beam are respectively fixed with the synchronous blocks 62; the two sides of the test frame 1 are also respectively provided with an upper Liang Shengjiang guide rail 64, and the synchronous block 62 is arranged on the upper Liang Shengjiang guide rail 64 in a sliding way; the upper and lower limit positions of the test stand 1 corresponding to the synchronizing blocks 62 are respectively provided with a limiter 63. Wherein the stop 63 may be a position sensor or a limit switch. The limiter 63 is electrically connected to the PLC controller. The test rack 1 may be a frame structure, and is constructed by profiles or other materials. The output shaft is arranged at the top end of the test frame 1. One side of the synchronizing block 62 is fixed with the upper beam 5, the other side is fixed with the synchronizing belt 61, and a guide groove is arranged in the middle part and matched with the upper Liang Shengjiang guide rail 64. Of course, other drive mechanisms commonly used, such as stepper motors, may be used herein.
The test frame 1 is provided with a touch screen control panel 7, and the touch screen control panel is electrically connected with a PLC controller 9. The lifting servo motor 60, the bead rope clamping driving mechanism 24, the bead rope lifting driving mechanism 4 and other mechanisms which can be automatically controlled in the text can be electrically connected with the PLC 9 and can be controlled by the touch screen control panel 7. The touch panel 7 is provided with an on button and an emergency stop button, and other parameters such as setting speed. The manner of electrical connection and signal transmission between the control panel of the touch screen, the servo motor, the PLC controller 9, the air cylinder, the linear driving mechanism, and the control electric appliance belongs to the prior art, and will not be described in detail.
The specific implementation method comprises the following steps: the upper beam 5 is controlled to be lifted to a proper position by the control panel to hang the curtain. The signal is transmitted to the PLC 9 through the touch screen control panel and then transmitted to the lifting servo motor 60, the synchronous belts 61 on two sides are driven to drive the upper beam 5 to lift along the upper Liang Shengjiang guide rail 64, and the lifting speed of the upper beam 5 can be adjusted through the touch screen control panel 7 transmitting the instruction. The curtain mounting frame is hung on the upper beam 5, the bead ropes are respectively placed in the clamping grooves of the clamping devices A and B according to the natural sagging direction, and the upper beam 5 is lifted to a proper detection position through the lifting servo motor 60. The upper and lower limit positions of the upper beam 5 are respectively provided with a limiter 63 for limiting the travel of the upper beam 5.
When the detection is started, a signal can be sent to the PLC 9 through the touch screen control panel 7, the PLC 9 controls the cylinder of the first clamping mechanism 2 to start clamping the bead wire A side, and then controls the lifting servo motor 60 to start so as to drive the belt 41 to move downwards. The carriage 40 moves downward with the first clamping mechanism 2 clamped and the second clamping mechanism 3 in a released state along the clamping elevating rail 42, and the beaded rope a side is clamped downward, thereby expanding the window curtain. The stroke of the first clamping mechanism 2 is set by the length of the bead rope, and when the first clamping mechanism 2 is pulled to the bottom curtain to be not fully unfolded, the first clamping mechanism 2 can loosen the bead rope and slide to the top to repeat the action. The principle is the same when the curtain is closed, the first clamping mechanism 2 releases the beaded rope a side, the second clamping mechanism 3 clamps the beaded rope B side and moves down to the bottom with the belt 41, and if the curtain is not fully closed, the second clamping mechanism 3 releases the beaded rope and slides to the top to repeat the action. The movement stroke can be controlled by the touch screen control panel 7 setting a specified command and the movement speed. The bead rope lifting driving mechanism 4 is also provided with a limiter 63, and the exceeding range is automatically stopped; if the emergency stop button on the control panel can be pressed in the abnormal test process, the detection equipment is safe and reliable.
The utility model is applicable to the curtain test controlled by various bead wires or pull ropes, and can effectively detect the real-time operation condition of the controller 9 and the curtain main body of the pull bead or pull rope. The testing process of the detection equipment is consistent with the actual using process, and whether the service life of the curtain controller 9 in the normal range meets the requirement can be tested by adjusting the lifting speeds of the first clamping mechanism 2 and the second clamping mechanism 3; the long-time tensile test can be performed, and the PLC can automatically record the lifting times of the bead rope lifting driving mechanism 4, so that the curtain retraction times can be calculated.
Any combination of the features of the above-described embodiments is possible, and the combination of the features should be regarded as the scope of the present description as long as there is no contradiction. The technical proposal, equivalent substitution or change, and several changes and improvements made according to the utility model are considered to be the protection scope of the utility model without departing from the general conception of the utility model.
Claims (8)
1. The utility model provides a detection equipment of pearl rope control (window) curtain, includes test jig, its characterized in that: the bead rope driving mechanism is arranged on the test frame and respectively pulls the bead rope A side to move downwards to realize curtain unfolding and the bead rope B side to move downwards to realize curtain closing.
2. The bead cord control apparatus of claim 1, wherein: the bead rope driving mechanism comprises a first clamping mechanism used for clamping the side A of the bead rope and a second clamping mechanism used for clamping the side B of the bead rope; the first clamping mechanism and the second clamping mechanism are driven by the bead rope lifting driving mechanism to linearly move along the opening and closing direction of the curtain.
3. The bead cord control apparatus of claim 2, wherein: the first clamping mechanism and the second clamping mechanism are respectively positioned at the positions of the side A of the bead rope and the side B of the bead rope which naturally droop; the first clamping mechanism and the second clamping mechanism are identical in structure, the first clamping mechanism comprises a first clamping piece and a second clamping piece, an L-shaped clearance groove exists between the first clamping piece and the second clamping piece, the L-shaped clearance groove comprises an opening groove for enabling a bead rope to enter and a clamping groove for clamping the bead rope, and any one or both of the first clamping piece and the second clamping piece are driven to move by a bead rope clamping driving mechanism so that the width of the clamping groove is changed to clamp or loosen the bead rope.
4. A bead cord controlled curtain detection apparatus as claimed in claim 3, wherein: the bead rope clamping driving mechanism is an air cylinder, the first clamping piece is fixedly arranged at the fixed end of the air cylinder, and the second clamping piece is fixedly connected with the moving end of the air cylinder; the cylinder is controlled by a pneumatic electromagnetic valve, and the pneumatic electromagnetic valve is externally connected with an air pipe with pressure.
5. A bead cord controlled curtain detection apparatus as claimed in claim 3, wherein: the first clamping mechanism and the second clamping mechanism are arranged on the sliding frame of the same bead rope lifting driving mechanism, and the first clamping mechanism and the second clamping mechanism are arranged in a staggered mode and different in height.
6. A bead cord controlled shade detection apparatus according to any one of claims 1-5, wherein: the upper beam of the curtain mounting frame used for connecting the upper end of the curtain is arranged on the test frame, and is driven by an upper beam lifting driving mechanism arranged on the test frame to lift on the test frame.
7. The bead cord control apparatus of claim 6, wherein: the upper beam lifting driving mechanism comprises a lifting servo motor arranged on the test frame, the lifting servo motor drives the output shaft to rotate, two ends of the output shaft are respectively provided with an upper synchronous pulley, and each upper synchronous pulley drives a lower synchronous pulley below to rotate through a synchronous belt; the synchronous belts at the two sides are respectively fixedly provided with a synchronous block, and the two ends of the upper beam are respectively fixed with the synchronous blocks; upper Liang Shengjiang guide rails are respectively arranged on two sides of the test frame, and the synchronizing blocks are arranged on the upper beam lifting guide rails in a sliding manner; and the upper limit position and the lower limit position of the test frame corresponding to the synchronous block are respectively provided with a limiter.
8. The bead cord control apparatus of claim 7, wherein: a touch screen control panel is arranged on the test frame and is electrically connected with the PLC; the bead rope driving mechanism is electrically connected with the PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321905850.7U CN220552599U (en) | 2023-07-19 | 2023-07-19 | Detection equipment for bead rope controlled curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321905850.7U CN220552599U (en) | 2023-07-19 | 2023-07-19 | Detection equipment for bead rope controlled curtain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220552599U true CN220552599U (en) | 2024-03-01 |
Family
ID=90009928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321905850.7U Active CN220552599U (en) | 2023-07-19 | 2023-07-19 | Detection equipment for bead rope controlled curtain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220552599U (en) |
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2023
- 2023-07-19 CN CN202321905850.7U patent/CN220552599U/en active Active
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Address after: No. 100 Wangming Road, Mazhai Town, Erqi District, Zhengzhou City, Henan Province, 450000 Patentee after: Zhengzhou Mingyang window decoration technology Co.,Ltd. Country or region after: China Address before: 450000 No.2, Xianfeng Road, Mazhai Industrial Park, Erqi District, Zhengzhou City, Henan Province Patentee before: Zhengzhou Mingyang window decoration technology Co.,Ltd. Country or region before: China |