Abstract:
A wire drawing tightness controller for an easily detachable and foldable screen, comprising: a connecting member, a wire drawing control device, a first connecting unit and a second connecting unit, wherein the connecting member is provided on a window frame, the wire drawing control device is provided with at least a control unit, and the first connecting unit and the second connecting unit are arranged between the connecting member and the wire drawing control device. By means of the arrangement of the first connecting unit and the second connecting unit, the wire drawing control device can be conveniently connected to the connecting member, and can also be easily separated from the connecting member, thereby enhancing the convenience of assembling a foldable screen.

Description:
FIELD OF THE INVENTION 
       [0001]    The present invention relates to a component of a foldable screen, and more particularly to a wire drawing tightness controller for an easily detachable and foldable screen. 
       BACKGROUND OF THE INVENTION 
       [0002]    Screen installation has become one of the necessary devices in window structures. Recently, many windows using foldable screen have been adopted in order to isolate mosquitos from the interior, and avoid blocking the view from the exterior; the mosquitos can be isolated from the interior when the screen stretches, and a view without obstacles can be provided when the screen folds. 
         [0003]    Currently, the foldable screen provides an end disposed on a activity frame and another end disposed on a fixed frame, and drawing wires pass through a surface of the screen; The screen stretches or folds without inclining and falling through the tension of the wires, and a structure of the screen window provides with a wire drawing tightness controller for controlling the tension of the wires, such as the references from Taiwan Patent No. I260364, and No. I228567. However, the wire drawing tightness controllers from the references are disposed within the activity frame or the fixed frame, and the drawing wires are also disposed within the said frames or other frames of the foldable screen, thus drawing wires can be knotted on the wire drawing tightness controller to achieve the function of the expected controller. However, when the window of the foldable screen is removed and replaced, the frame provided with the drawing wires and the wire drawing tightness controller needs to be disassembled first, and the drawing wires and the wire drawing tightness controller are removed from the frame to replace the screen, thus replacing screen results in inconvenience. 
         [0004]    In order to improve the above disadvantage, Taiwan Patent No. M383624 discloses a drawing wire flexible mount of foldable screen window  1 , which comprises a wire bolt  11  and a shell cover  12  (see  FIGS. 1 and 2 ), wherein an end of the wire bolt is provided with a ditch, and drawing wires L are fixed in the ditch (not shown). Another end of the wire bolt is provided with a polygonal plug  111  formed with a screw hole  112 . The shell cover  12  is configured to receive the wire bolt  11 , and two sides of the shell cover  12  corresponding to a window frame A are formed with an embedded slot  121  to embed in the window frame A. Therefore, an workpiece is inserted into the screw hole  112  of the polygonal plug  111  to turn the wire bolt  11  when using it, and the drawing wires L winds around the wire bolt  11  or not to achieve the function of controlling the drawing wires L tightness. 
         [0005]    As described above, the structure of Patent No. M383624 can be embedded from the external part of the window frame to improve the inconvenience that the wire drawing tightness controller is disposed within the window frame. However, when the window frame uses extrusion molding, the mold is used for a long time, causing abrasions, and the size of the window frame is sometimes over the range of the original settings. Thus the installation of the shell cover is difficult, and the structure of Patent No. M383624 cannot exert the function of controlling the drawing wires tightness. 
       SUMMARY OF THE INVENTION 
       [0006]    A primary object of the present invention is to provide a wire drawing tightness controller for an easily detachable and foldable screen, which is able to be disposed on the external part of the window frame, and is not limited to the changing size of the window frame to overcome the difficult installation. 
         [0007]    Another object of the present invention is to provide a wire drawing tightness controller for an easily detachable and foldable screen to increase the convenience of the detachable and foldable screen. 
         [0008]    To achieve the above object, the present invention provides a wire drawing tightness control for an easily detachable and foldable screen, which comprises a connecting member; a wire drawing control device disposed on the connecting member, and including at least one control unit; a first connecting unit and a second connecting unit disposed between the connecting member and the wire drawing control device, wherein the first connecting unit and the second connecting unit are configured to be combined with and detached from each other. 
         [0009]    The beneficial effects of the present invention are such that a wire drawing tightness control for an easily detachable and foldable screen is provided, which comprises a connecting member; a wire drawing control device disposed on the connecting member, and including at least one control unit; a first connecting unit and a second connecting unit disposed between the connecting member and the wire drawing control device, wherein the first connecting unit and the second connecting unit are configured to be combined with and detached from each other. 
     
    
     
       DESCRIPTION OF THE DRAWINGS 
         [0010]      FIG. 1  is a schematic view of a prior art; 
           [0011]      FIG. 2  is another schematic view of a prior art; 
           [0012]      FIG. 3  is a schematic view of the present invention; 
           [0013]      FIG. 4  is a schematic view of a cover of a decorative strip of the present invention; 
           [0014]      FIG. 5  is a schematic view of a wire drawing tightness controller; 
           [0015]      FIG. 6  is a schematic view of a wire drawing tightness controller; 
           [0016]      FIG. 7  is another schematic view of a wire drawing tightness controller; 
           [0017]      FIG. 8  is a schematic view of a first connecting unit and a second connecting unit of a first embodiment of the present invention; 
           [0018]      FIG. 9  is a schematic view of a first connecting unit and a second connecting unit of a second embodiment of the present invention; 
           [0019]      FIG. 10  is a schematic view of a first connecting unit and a second connecting unit of a third embodiment of the present invention; and 
           [0020]      FIG. 11  is a schematic view of a first connecting unit and a second connecting unit of a forth embodiment of the present invention. 
       
    
    
     REFERENCE NUMERALS 
       [0000]    
       
         drawing wire flexible mount of foldable screen window  1 ; 
         connecting member  2 ; 
         wire drawing control device  3 ; 
         first connecting unit  4 ; 
         second connecting unit  5 ; 
         wire bolt  11 ; 
         shell cover  12 ; 
         annular wall  21 ; 
         cover  22 ; 
         upright plate  23 ; 
         decorative strip  24 ; 
         body  31 ; 
         base  32 ; 
         screw hole  41 ; 
         engaging hook  42 ; 
         pivot slot  43 ; 
         tab  51 ; 
         screw  52 ; 
         engaging portion  53 ; 
         pivot  54 ; 
         plug  111 ; 
         screw hole  112 ; 
         embedded slot  121 ; 
         engaging rib  231 ; 
         abutting rib  232 ; 
         side edge  251 ; 
         engaging portion  31 A; 
         engaging protrusion  31 B; 
         control unit  311 ; 
         wire groove  312 ; 
         hollow hole  313 ; 
         gear shaft  314 ; 
         limit portion  315 ; 
         gear  316 ; 
         through hole  317 ; 
         drive slot  318 ; 
         stopper  319 ; 
         wire guiding groove  321 ; 
         through hole  322 ; 
         hook portion  323 ; 
         engaging recess  324 ; 
         opening  431 ; 
         through hole  511 ; 
         window frame A; 
         drawing wire L. 
       
     
       DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0066]    Refer to  FIGS. 3 and 4 , a wire drawing tightness control for an easily detachable and foldable screen according to an embodiment of the present invention is illustrated, which comprises a connecting member  2 , a wire drawing control device  3 , a first connecting unit  4 , and a second connecting unit  5 , wherein the connecting member  2  is disposed on the external part of a window frame A through a fixing means, and the fixing means can adopt one of screwing, engaging, boding, and embedding. The connecting member  2  is screwed on window frame A in the embodiment, but is not limited thereto. Any fixing means can be adopted to fix the connecting member  2  on the window frame A, which is the scope of the present invention; Refer to  FIG. 4 , an edge portion of the connecting member  2  is disposed with an annular wall  21 , and the annular wall  21  is pivoted with a cover  22 . Dust or dirt can be avoided from the exterior by disposing the cover  22 , and the shielding effect can be achieved. Refer to  FIG. 5 , which is a connecting member  2  according to another embodiment of the present invention, wherein the connecting member  2  comprises two upright plates  23  opposite each other, and the wire drawing control device  3  is received between the upright plates  23 . The upright plates  23  are provided with an engaging rib  231  and a plurality of abutting ribs  232  thereon, wherein a decorative strip  25  is engaged with the engaging rib  231 , and the abutting ribs  232  abut against side edges  251  of the decorative strip  25 , thus dust or dirt can be avoided from the exterior, and the shielding effect can be achieved by disposing the decorative strip  25 . 
         [0067]    Refer to  FIGS. 6 and 7 , the wire drawing control device  3  can be disposed on the connecting member  2 , and easily detached from the connecting member  2 . The wire drawing control device  3  at least comprises a body  31  and a base  32 , wherein the body  31  includes a control unit  311  and a wire groove  312 ; the control unit  311  comprises a hollow hole  313  and a gear shaft  314 , and the hollow hole  313  communicates with the wire groove  312 , thus a drawing wire (not shown) passed into the wire groove  312  can also be passed into the hollow hole  313 . The gear shaft  314  is received in the hollow hole  313 , and an opening edge of the hollow hole  313  is provided with a limited portion  315 , thus the gear shaft  314  is received in the hollow hole  313  without dropping. The gear shaft  314  provides a gear  316  and a through hole  317 , and the drawing wire passed into the hollow hole  313  is knotted on the through hole  317 . An end of the gear shaft  314  is provided with a drive slot  318  to drive the gear shaft  314  turning by a tool; a stopper  319  is extended from an inner wall of the hollow hole  313  to stop between two teeth of the gear  316  of the gear shaft  314 . The drawing wire winds on the gear shaft  314  when the gear shaft  314  is turned to control the wire drawing tightness, and the gear shaft  314  can be stopped when the wire drawing tightness is controlled to a suitable state. At this time, the stopper  319  is stopped between two teeth of the gear  316  of the gear shaft  314 , thus the gear shaft  314  can avoid draw back by the drawing wire. 
         [0068]    Refer still to  FIGS. 6 and 7 , the body  31  is combined on the base  32 ; and the base  32  includes a wire guiding groove  321  and a through hole  322  related to the wire groove  312  and the hollow hole  313  of the body  31 , wherein the wire guiding groove  321  is communicated with the wire groove  312  of the body  31 ; The through hole  322  is provided to drive the gear shaft  314  of the body  31  turning by a tool, thus the wire drawing tightness can be controlled from the external part of the base  32 . The base  32  provides a hook portion  323  and an engaging recess  324 , and the body  31  is provided with an engaging portion  31 A and an engaging protrusion  31 B related to the hook portion  323  and the engaging recess  324  of the base  32 , respectively, thus the body  31  can be engaged on the external part of the base  32 , and can easily be detached from the base  32 . 
         [0069]    Furthermore, the first connecting unit  4  and the second connecting unit  5  are disposed between the connecting member  2  and the wire drawing control device  3 , wherein the first connecting unit  4  and the second connecting unit  5  are configured to be combined with and detached from each other. Refer to  FIG. 8 , a first connecting unit  4  and a second connecting unit  5  to a first embodiment of the present invention are illustrated, wherein the first connecting unit  4  is a hook fastener (or a loop fastener) disposed on the connecting member  2 , and the second connecting unit  5  is a loop fastener (or a hook fastener) disposed on the wire drawing control device  3 . The first connecting unit  4  and the second connecting unit  5  are configured to be conveniently combined with and easily detached from each other by using the hook fastener and the loop fastener. In the embodiment, the connecting member  2  is an adhesive layer, such as sided adhesive or viscose, thus the connecting member  2  can be bonded on the external part of the window frame A directly. 
         [0070]    Refer to  FIG. 9 , a first connecting unit  4  and a second connecting unit  5  to a second embodiment of the present invention are illustrated, wherein the first connecting unit  4  is also a magnetically attracting component (or a magnetically attracted component) disposed on the connecting member  2 . In the embodiment, the connecting member  2  is an adhesive layer, thus the connecting member  2  can be bonded on the external part of the window frame A directly; The second connecting unit  5  is a magnetically attracted component (or a magnetically attracting component) disposed on the wire drawing control device  3 , thus the first connecting unit  4  and the second connecting unit  5  to a second embodiment can be magnetically attracted with each other, so that the wire drawing control device  3  can be combined with and detached from the connecting member  2 . 
         [0071]    Refer to  FIG. 10 , a first connecting unit  4  and a second connecting unit  5  to a third embodiment of the present invention are illustrated, wherein the first connecting unit  4  at least comprises a screw hole  41  disposed on the connecting member  2 . In the embodiment, the connecting member  2  is a plate, and the second connecting unit  5  comprises a tab  51  and a screw  52  corresponding to the first connecting unit  4 , wherein the tab  51  is provided with a through hole  511 , and the screw  52  passes through the through hole  511  and then screw-connects to the screw hole  41  of the first connecting unit  4 , thus the second connecting unit  5  can be screwed on the first connecting unit  4 . Therefore, the wire drawing control device  3  can be easily combined and easily detached in the embodiment by screwing the screw  52 . 
         [0072]    Refer to  FIG. 11 , a first connecting unit  4  and a second connecting unit  5  to a forth embodiment of the present invention are illustrated, wherein the first connecting unit  4  comprises an engaging hook  42  and two pivot slots  43 , and the engaging hook  42  is formed on the connecting member  2 . In the embodiment, the connecting member  2  is a plate, and the pivot slots  43  are formed on the upright plates  23  of the connecting member  2 , respectively. The pivot slots  43  are L shaped, and an end of each of the pivot slots  43  is formed with an opening  431  on the corresponding upright plates  23 . The second connecting unit  5  is disposed on the wire drawing control device  3 , and the second connecting unit  5  comprises an engaging portion  53  and two pivots  54  disposed on the wire drawing control device  3  and corresponding to the engaging hook  42  and the pivot slots  43  of the first connecting unit  4 , respectively. Thus, when the embodiment is used, the pivots  54  of the second connecting unit  5  are inserted into the pivot slots  43  through the opening  431  above the upright plates  23  of the connecting member  2 , so that the wire drawing control device  3  can be pivoted in the pivot slots  43 , and then the wire drawing control device  3  is pivoted to combine the engaging portion  53  of the second connecting unit  5  on the wire drawing control device  3  and the engaging hook  42  of the first connecting unit  4 , thus the wire drawing control device  3  can be combined with the connecting member  2 , the entire installation is very convenient, and the easily detachable effect can be achieved. 
         [0073]    According to what is described above, the present invention is not limited to the changing size of the window frame when the present invention is used, and the easily detachable and foldable screen can be achieved. 
         [0074]    The above descriptions are only preferred embodiments of the present invention but are not used to limit the features of the present invention. As long as a reinvention uses technical means or creation principles related to the present invention, the reinvention still falls within the scope of the invention. One skilled in the art, without departing from the spirit and scope of the invention, can make various modifications and variations, so it is reasonable that the range of the scope of the invention is defined by the claims.