Patent Publication Number: US-11021909-B2

Title: Spring roller blind system

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a spring roller blind system, and more particularly a spring roller blind system that may be convenient in adjustment 
     2. Description of Related Art 
     A conventional spring roller blind system has a roller blind module, a height adjusting module, a winding module, and two main adjusting devices. The roller blind module has a roller tube and a blind. The roller tube has a first end and a second end opposite to the first end of the roller blind. The blind is retractably wound on the roller tube. The height adjusting module is inserted into the first end of the roller tube and has a height-adjusting head inserted into the first end of the roller tube. The winding module is inserted into the second end of the roller tube and has a winding-adjusting head. The two main adjusting devices are respectively inserted into the height-adjusting head of the height adjusting module and the winding-adjusting head of the winding module. 
     Each main adjusting device has a bracket and an adjusting element. The adjusting element is detachably disposed on the bracket, wherein the two adjusting elements of the main adjusting devices are respectively inserted into the height adjusting module and the winding module. The adjusting element has a shell, an adjusting member, and an adjusting shaft. The shell is detachably disposed on the bracket and has a side surface. The adjusting member is rotatably disposed in the shell. The adjusting shaft is disposed in the shell, is connected to the adjusting member, and has a slot. The slot is formed in an end surface of the adjusting shaft to be exposed out of the side surface of the shell. 
     To adjust a position of a bottom edge of the blind, a hand tool operated by users may be inserted into the slot of one of the adjusting shafts for adjusting the height adjusting module. 
     To adjust a retracting speed of the blind, the hand tool may be inserted into the slot of the other adjusting shaft for adjusting the winding module. 
     However, in each main adjusting device, the slot is formed in the end surface of the adjusting shaft and is exposed out of the side surface of the shell. The rotation of the adjusting shaft is driven by the hand tool. An outer diameter of the adjusting shaft is small. A rotating axis of the adjusting shaft is perpendicular to a rotating axis of the adjusting member. The adjusting shaft has to rotate multiple circles for driving the adjusting member to rotate to adjust the height adjusting module or the winding module. The adjustments of the height adjusting module and the winding module are inconvenient and time-consuming. 
     To overcome the shortcomings, the present invention tends to provide a spring roller blind system to mitigate or obviate the aforementioned problems. 
     SUMMARY OF THE INVENTION 
     The main objective of the invention is to provide a spring roller blind system that may solve the problem that the adjustments of the height adjusting module and the winding module by the main adjusting devices are inconvenient and time-consuming. 
     The spring roller blind system has a roller blind module, a height adjusting module, a winding module, a first main adjusting device, a second main adjusting device, an auxiliary adjusting element, and a fixing element. 
     The roller blind module has a roller tube and a blind. The roller tube is hollow and has an outer surface, a first end, and a second end opposite the first end of the roller tube. The blind is retractably wound on the outer surface of the roller tube and has a top edge fixed on the outer surface of the roller tube. 
     The height adjusting module is inserted into the first end of the roller tube and has a height-adjusting head. The height-adjusting head is inserted into the first end of the roller tube and has an outer end surface and a height-adjusting hole. The outer end surface of the height-adjusting head is exposed out of the roller tube. The height-adjusting hole is formed in the height-adjusting head and extends to the outer end surface of the height-adjusting head. 
     The winding module is inserted into the second end of the roller tube and has a winding-adjusting head and a fixing recess. The winding-adjusting head is inserted into the second end of the roller tube and has an outer end surface exposed out of the roller tube. The fixing recess is formed on the outer end surface of the winding-adjusting head. 
     The first main adjusting device is inserted into the height-adjusting head of the height adjusting module and has a first bracket and a first main adjusting element. The first bracket is located outside the first end of the roller tube. The first main adjusting element is detachably disposed on the first bracket and is inserted into the height-adjusting hole of the height-adjusting head. 
     The second main adjusting device is inserted into the winding-adjusting head of the winding module and has a second bracket and a second main adjusting element. The second bracket is located outside the second end of the roller tube. The second main adjusting element is detachably disposed on the second bracket and is connected to the winding-adjusting head. 
     The auxiliary adjusting element is selectively and detachably disposed on the first main adjusting element or the second main adjusting element, and has a base, an engaging member, and a handle. The base has a first surface, a second surface, a first end, and a second end. The second surface of the base is opposite to the first surface of the base. The second end of the base is opposite to the first end of the base. The engaging member is formed on the first surface of the base adjacent to the first end of the base. The handle is formed on the second surface of the base adjacent to the second end of the base. 
     The fixing element is selectively inserted into the fixing recess of the winding module for positioning the second main adjusting element. 
     In use, the first bracket and the second bracket are disposed on a wall or a ceiling. The height adjusting module and the winding module are disposed on the roller tube of the roller blind module. The first main adjusting element of the first main adjusting device is disposed on the height-adjusting head. The second main adjusting element of the second main adjusting device is disposed on the winding-adjusting head of the winding module. 
     In adjustment, the auxiliary adjusting element engages with the second main adjusting element. The second main adjusting element can be rotated by the auxiliary adjusting element for adjusting the torsion of the winding module. After finishing the torsion adjustment of the winding module, the fixing element can be inserted into the fixing recess for preventing the second main adjusting element from rotating. The auxiliary adjusting element can be detached from the second main adjusting element. The second main adjusting element can be disposed on the second bracket. The fixing element can be detached from the fixing recess. In addition, the auxiliary adjusting element engages with the first main adjusting element. The second main adjusting element can be rotated by the auxiliary adjusting element for adjusting the position of a bottom edge of the blind. After finishing the adjustment of the height adjusting module, the auxiliary adjusting element can be detached from the first main adjusting element. The first main adjusting element can be disposed on the first bracket. 
     Accordingly, a rotating axis of the auxiliary adjusting element and a rotating axis of the first main adjusting element are the same. The number of turns of the auxiliary adjusting element is the same as the number of turns of the first main adjusting element. The auxiliary adjusting element is easy in operation. The adjustment of the height adjusting module is convenient and saves time. By the same token, the adjustment of the winding module is convenient and saves time. Furthermore, the fixing element can position the second main adjusting element after adjustment for increasing the adjusting convenience of the winding module. 
     Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of a spring roller blind system in accordance with a preferred embodiment of the present disclosure, showing a roller blind module is disposed between a first main adjusting device and a second main adjusting device; 
         FIG. 2  is an exploded perspective view of the spring roller blind system in  FIG. 1 , showing a height adjusting module is disposed in the roller blind module and is connected to the first main adjusting device; 
         FIG. 3  is another exploded perspective view of the spring roller blind system in  FIG. 1 , showing a winding module is disposed in the roller blind module and is connected to the second main adjusting device, and a fixing element is inserted between the winding module and second main adjusting device; 
         FIG. 4  is a perspective view of an auxiliary adjusting element of the spring roller blind system in  FIG. 1 ; 
         FIG. 5  is a side view of the auxiliary adjusting element of the spring roller blind system in  FIG. 4 ; 
         FIG. 6  is a side view of the auxiliary adjusting element of the spring roller blind system in  FIG. 4 , showing the auxiliary adjusting element engages with a first main adjusting element of the first main adjusting device; 
         FIG. 7  is an enlarged side view in partial section of the spring roller blind system in  FIG. 1 , showing the auxiliary adjusting element engages with a first main adjusting element of the first main adjusting device; 
         FIG. 8  is an operational end view of the spring roller blind system in  FIG. 7 ; 
         FIG. 9  is a cross sectional side view of the first main adjusting element of the spring roller blind system in  FIG. 2 ; 
         FIG. 10  is a cross sectional side view of the second main adjusting element of the spring roller blind system in  FIG. 3 ; 
         FIG. 11  is an operational cross sectional side view of the fixing element of the spring roller blind system in  FIG. 3 ; 
         FIG. 12  is a side view in partial section of the fixing element of the spring roller blind system along line  12 - 12  in  FIG. 11 ; 
         FIG. 13  is an enlarged cross section side view of the second main adjusting device in  FIG. 3 , showing the fixing element is detached; and 
         FIG. 14  is an operational cross section side view of the second main adjusting device in  FIG. 13 , showing the auxiliary adjusting element is inserted between a second bracket and the second main adjusting element of the second main adjusting device. 
     
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENT 
     In the following detailed description, for purposes of explanation and not limitation, an example embodiment disclosing specific details is set forth in order to provide a thorough understanding of the inventive principles and concepts. However, it will be apparent to one having ordinary skill in the art having the benefit of the present disclosure that other embodiments according to the present teachings that depart from the specific details disclosed herein remain within the scope of the appended claims. Moreover, descriptions of well-known apparatuses and methods may be omitted so as to not obscure the description of the preferred embodiment. Such methods and apparatuses are clearly within the scope of the present disclosure. 
     Relative terms may be used to describe the various elements&#39; relationships to one another, as illustrated in the accompanying drawings. These relative terms are intended to encompass different orientations of the device and/or elements in addition to the orientation depicted in the drawings. 
     With reference to  FIGS. 1 to 4 , a spring roller blind system in accordance with the present invention comprises a roller blind module  10 , a height adjusting module  20 , a winding module  30 , a first main adjusting device  40 , a second main adjusting device  50 , an auxiliary adjusting element  60 , and a fixing element  70 . 
     The roller blind module  10  has a roller tube  11  and a blind  12 . The roller tube  11  is hollow and has an outer surface, a first end, and a second end opposite the first end of the roller tube  11 . The blind  12  is retractably wound on the outer surface of the roller tube  11  and has a top edge fixed on the outer surface of the roller tube  11 . 
     The height adjusting module  20  is inserted into the first end of the roller tube  11  and has a height-adjusting head  21 . The height-adjusting head  21  is inserted into the first end of the roller tube  11  and has an outer end surface and a height-adjusting hole  22 . The outer end surface of the height-adjusting head  21  is exposed out of the roller tube  11 . The height-adjusting hole  22  is formed in the height-adjusting head  21  and extends to the outer end surface of the height-adjusting head  21 . 
     The winding module  30  is inserted into the second end of the roller tube  11  and has a winding-adjusting head  31  and a fixing recess  32 . The winding-adjusting head  31  is inserted into the second end of the roller tube  11  and has an outer end surface exposed out of the roller tube  11 . The fixing recess  32  is formed on the outer end surface of the winding-adjusting head  31 . 
     With reference to  FIGS. 2, 7, and 9 , the first main adjusting device  40  is inserted into the height-adjusting head  21  of the height adjusting module  20  and has a first bracket  41  and a first main adjusting element  42 . The first bracket  41  is located outside the first end of the roller tube  11 . The first main adjusting element  42  is detachably disposed on the first bracket  41  and is inserted into the height-adjusting hole  22  of the height-adjusting head  21 . 
     With reference to  FIGS. 3, 10, and 13 , the second main adjusting device  50  is inserted into the winding-adjusting head  31  of the winding module  30  and has a second bracket  51  and a second main adjusting element  52 . The second bracket  51  is located outside the second end of the roller tube  11 . The second main adjusting element  52  is detachably disposed on the second bracket  51  and is connected to the winding-adjusting head  31 . 
     With reference to  FIGS. 6 to 8 , the auxiliary adjusting element  60  is selectively and detachably disposed on the first main adjusting element  42  or the second main adjusting element  52 . With reference to  FIGS. 4 and 5 , the auxiliary adjusting element  60  has a base  61 , an engaging member  62 , and a handle  63 . The base  61  has a first surface  611 , a second surface  612 , a first end, and a second end. In use, the first surface  611  of the base  61  faces the first main adjusting element  42  or the second main adjusting element  52 . The second surface  612  is opposite to the first surface  611  of the base  61 . The second end of the base  61  is opposite to the first end of the base  61 . The engaging member  62  is formed on the first surface  611  of the base  61  adjacent to the first end of the base  61 . The handle  63  is formed on the second surface  612  of the base  61  adjacent to the second end of the base  61 . Furthermore, the auxiliary adjusting element  60  has an inserting portion  64  formed on the first end of the base  61 . 
     In addition, the engaging member  62  of the auxiliary adjusting element  60  has two engaging portions  621  and two positioning portions  622 . The two engaging portions  621  are formed on the first surface  611  of the base  61  at a spaced interval. The two positioning portions  622  are formed on the first surface  611  of the base  61  at a spaced interval and are respectively connected to the two engaging portions  621 . Moreover, the base  61  of the auxiliary adjusting element  60  has a through hole  613 . The through hole  613  is formed on the first surface  611  of the base  61  and is located between the two engaging portions  621 . 
     With reference to  FIGS. 3, 11, and 12 , the fixing element  70  is selectively inserted into the fixing recess  32  of the winding module  30  for positioning the second main adjusting element  52 . Furthermore, the fixing element  70  has a plate  71 , an end notch  72 , two side notches  73 , and an elongated hole  74 . The end notch  72  is formed on an end of the plate  71 . The two side notches  73  are respectively formed on two side surfaces of the plate  71 . The elongated hole  74  is formed through the plate  71 , is opposite to the end notch  72 , and is located between the two side notches  73 . In addition, the auxiliary adjusting element  60  and the fixing element  70  are made of plastic materials. 
     With reference to  FIGS. 2, 7, and 9 , the first bracket  41  has a first combining surface  411 , a first connecting groove  412 , and a first elastic sheet  413 . The first combining surface  411  faces the first end of the roller tube  11 . The first connecting groove  412  is formed in the first combining surface  411  of the first bracket  41 . The first elastic sheet  413  is formed on and protrudes from the first combining surface  411  of the first bracket  41 , and is inserted into the first connecting groove  412  of the first bracket  41 . 
     The first main adjusting element  42  has a first shell  43 , a first adjusting assembly  44 , and a first spring  48 . The first shell  43  is detachably inserted into the first connecting groove  412  of the first bracket  41  and has a front surface, a rear surface, an outer edge, multiple first dovetailed portions  45 , and a first crisscross groove  46 . The front surface of the first shell  43  faces the height-adjusting head  21 . The rear surface of the first shell  43  is opposite the front surface of the first shell  43  and abuts against the first elastic sheet  413  of the first bracket  41 . The outer edge of the first shell  43  is formed around the rear surface of the first shell  43 . The first dovetailed portions  45  are formed on the outer edge of the first shell  43  at spaced intervals. The first crisscross groove  46  is formed on the rear surface of the first shell  43 . 
     The first adjusting assembly  44  is rotatably disposed in the first shell  43  and has a first adjusting rod  47  and a first spring  48 . The first adjusting rod  47  is disposed in the first shell  43  and has two ends, a first projection  471 , and a first clutch protrusion  472 . The first projection  471  is formed on one of the two ends of the first adjusting rod  47  and extends out of the front surface of the first shell  43 . The first clutch protrusion  472  is formed on the other one of the two ends of the first adjusting rod  47 , is inserted into the first crisscross groove  46  of the first shell  43 , and abuts against the first elastic sheet  413  of the first bracket  41 . Furthermore, the first projection  471  has an end surface being noncircular. 
     The first spring  48  is disposed in the first shell  43  and has two ends respectively abutting against the first shell  43  and the first adjusting rod  47 . 
     With reference to  FIGS. 3, 10, 11, and 13 , the second bracket  51  has a second combining surface  511 , a second connecting groove  512 , and a second elastic sheet  513 . The second combining surface  511  faces the second end of the roller tube  11 . The second connecting groove  512  is formed in the second combining surface  511  of the second bracket  51 . The second elastic sheet  513  is formed on and protrudes from the second combining surface  511  of the second bracket  51 , and is inserted into the second connecting groove  512  of the second bracket  51 . 
     The second main adjusting element  52  has a second shell  53  and a second adjusting assembly  54 . The second shell  53  is detachably inserted into the second connecting groove  512  of the second bracket  51  and has a front surface, a rear surface, an outer edge, multiple second dovetailed portions  55 , and a second crisscross groove  56 . The front surface of the second shell  53  faces the winding-adjusting head  31 . The rear surface of the second shell  53  is opposite to the front surface of the second shell  53  and abuts against the second elastic sheet  513  of the second bracket  51 . The outer edge of the second shell  53  is formed around the rear surface of the second shell  53 . The second dovetailed portions  55  are formed on the outer edge of the second shell  53  at spaced intervals. The second crisscross groove  56  is formed on the rear surface of the second shell  53 . 
     The second adjusting assembly  54  is rotatably disposed in the second shell  53  and has a second projection  57 , a second clutch protrusion  58 , and a second spring  59 . The second projection  57  is disposed in the second shell  53 , extends out of the front surface of the second shell  53 , and is fixed on the winding-adjusting head  31 . The second clutch protrusion  58  is disposed in the second shell  53  around the second projection  57 , is inserted into the second crisscross groove  56  of the second shell  53 , and abuts against the second elastic sheet  513  of the second bracket  51 . The second spring  59  is disposed in the second shell  53  and has two ends respectively abutting against the second projection  57  and the second clutch protrusion  58 . 
     In use, the first bracket  41  and the second bracket  51  are disposed on a wall or a ceiling at a spaced interval. The height adjusting module  20  is inserted into the roller tube  11  of the roller blind module  10  via the first end of the roller tube  11 . The winding module  30  is inserted into the roller tube  11  of the roller blind module  10  via the second end of the roller tube  11 . The first main adjusting element  42  of the first main adjusting device  40  is disposed on the height-adjusting head  21 . The first main adjusting element  42  of the first main adjusting device  40  is inserted into the first connecting groove  412  of the first bracket  41 . The first elastic sheet  413  of the first bracket  41  abuts against the first shell  43  for positioning the first main adjusting element  42 . The second main adjusting element  52  of the second main adjusting device  50  is inserted into and fixed on the winding-adjusting head  31  of the winding module  30 . The second main adjusting element  52  is inserted into the second connecting groove  512  of the second bracket  51 . The second elastic sheet  513  of the second bracket  51  abuts against the second shell  53  for positioning the second main adjusting element  52 . 
     To detach the second main adjusting element  52  from the second bracket  51 , with reference to  FIGS. 13 and 14 , the inserting portion  64  of the auxiliary adjusting element  60  can be inserted into the second crisscross groove  56  of the second shell  53  and is located between the second elastic sheet  513  and the second clutch protrusion  58 . The second elastic sheet  513  is pressed by the inserting portion  64  and does not abut against the second shell  53 . The second shell  53  can be pressed downwardly for sliding out of the second connecting groove  512  of the second bracket  51 . By the same token, the first shell  43  can be detached from the first bracket  41  by the inserting portion  64  of the auxiliary adjusting element  60 . 
     To adjust a position of a bottom edge of the blind  12 , the first main adjusting element  42  can be detached from the first bracket  41 . With reference to  FIGS. 6 to 9 , the two engaging portions  621  of the engaging member  62  of the auxiliary adjusting element  60  engage with the first dovetailed portions  45  of the first shell  43  of the first main adjusting element  42 . The two positioning portions  622  of the engaging member  62  are inserted into the first crisscross groove  46  to position the auxiliary adjusting element  60  on the first shell  43 . Users can grasp the handle  63  and rotate the auxiliary adjusting element  60  for driving the first main adjusting element  42  to rotate. The height adjusting module  20  can be adjusted by the first projection  471  that is rotated by the auxiliary adjusting element  60 . The position of the bottom edge of the blind  12  is adjusted by the height adjusting module  20 . 
     To adjust a retracting speed of the blind  12 , the second main adjusting element  52  can be detached from the second bracket  51 . The retracting speed of the blind  12  is adjusted by the winding module  30 . The winding module  30  is adjusted by the rotation of the second main adjusting element  52 . In the rotation of the second main adjusting element  52 , the two engaging portions  621  of the engaging member  62  of the auxiliary adjusting element  60  engage with the second dovetailed portions  55  and the second shell  53 . The auxiliary adjusting element  60  is rotated by users for rotating the second main adjusting element  52  to adjust the torsion of the winding module  30 . After the torsion of the winding module  30  is adjusted, the fixing element  70  can be inserted into the fixing recess  32  for preventing the second main adjusting element  52  from rotating. The second main adjusting element  52  with the auxiliary adjusting element  60  is disposed on the second bracket  51 . The auxiliary adjusting element  60  is detached from the second main adjusting element  52 . 
     Accordingly, in the adjustment of the height adjusting module  20 , a rotating axis of the auxiliary adjusting element  60  and a rotating axis of the first main adjusting element  42  are parallel and not perpendicular to each other. The number of turns of the auxiliary adjusting element  60  is same as the number of turns of the first main adjusting element  42 . The auxiliary adjusting element  60  is elongate, so a distance from one end of the handle  63  to the rotating axis of the auxiliary adjusting element  60  is adequate for the auxiliary adjusting element  60  to be easily operated. The adjustment of the height adjusting module  20  is convenient and saves time. By the same token, the adjustment of the winding module  30  is convenient and saves time by the auxiliary adjusting element  60 . 
     In addition, the fixing element  70  can position the second main adjusting element  52  that is adjusted by the auxiliary adjusting element  60 . The adjusting convenience of the winding module  30  is increased. 
     Furthermore, the first main adjusting element  42  is easily detached from the first bracket  41  by the inserting portion  64  of the auxiliary adjusting element  60 . The second main adjusting element  52  is easily detached from the second bracket  51  by the inserting portion  64  of the auxiliary adjusting element  60 . The auxiliary adjusting element  60  can be applied to adjust the height adjusting module  20  or the winding module  30 , assist the first main adjusting element  42  in detaching from the first bracket  41 , and assist the second main adjusting element  52  in detaching from the second bracket  51 . The practicability of the auxiliary adjusting element  60  is good. 
     Moreover, the auxiliary adjusting element  60  is made of plastic materials for preventing damage to the first dovetailed portions  45  or the second dovetailed portions  55 . 
     In addition, the auxiliary adjusting element  60  can detachably engage with the first main adjusting element  42  or the second main adjusting element  52 . Structures of the first main adjusting element  42  and the second main adjusting element  52  are simplified. 
     It should be noted that the inventive principles and concepts have been described with reference to a preferred embodiment for the purpose of demonstrating principles and concepts of the invention. Persons of skill in the art will understand how the principles and concepts of the invention can be applied to other embodiments not explicitly described herein. Those skilled in the art will understand that many modifications may be made to the embodiments described herein while still achieving the goals of the invention, and that all such modifications are within the scope of the present disclosure.