referring to fig4 , an automatic open - and - close umbrella comprises a telescopic umbrella support 1 and collapsible umbrella ribs 2 ; the support 1 includes a lower accommodation 4 slipperily disposed thereon , an upper accommodation 3 disposed on a top end thereof , and a base 10 disposed at a lower end thereof . the umbrella ribs 2 are connected with the support 1 through the upper accommodation 3 , and the lower accommodation 4 . the support 1 includes an outer pipe 11 , a center pipe 12 , and an inner pipe 13 telescopically coupled with each other . moreover , the support 1 further includes a propelling spring 14 disposed therein for correspondingly driving the outer pipe 11 , the center pipe 12 , and the inner pipe 13 . the upper accommodation 3 is disposed at a top portion of the outer pipe 11 , the base 10 is disposed at a bottom portion of the inner pipe 13 , and the lower accommodation 4 is disposed outside the outer pipe 11 . whereby , while stretching the support 1 , the outer pipe 11 would be placed at the topmost position , and the inner pipe 13 would be placed at the lowermost position . wherein , the substantial structure and the processes for opening and closing the umbrella known by the person skilled in the art are herein omitted . the detailed protective device and the retrieving structure related to the present invention would be illustrated as follows . the description of the following techniques would tag along the third embodiment of the conventional structure . as it should be , the present invention is not limited to the third embodiment of the conventional structure ; the first and second embodiments of the conventional structures or other protective devices could be optionally applied . in order to clearly explain the detailed techniques involved in the present invention , the third embodiment of the conventional structure is adopted . referring to fig6 and 7 , the driving member inside the base adopts a slippery block 64 with an opening 641 . wherein , a nail 642 is inserted in the opening 641 for limiting the longitudinal movement of the slippery block 64 in the blocking member 55 . the nail 642 is fixed on the base 10 , and a relocating spring 643 is disposed under the slippery block 64 . when the umbrella is to be opened , a button 59 on the base 10 is pressed to let a spring knurl 562 depart from an engaging hole ( not shown ). accordingly , by means of the propelling spring , the support 1 would be extended and spread , the pulling cord 53 would be pulled , and the lower accommodation 4 would be propped up , so that the umbrella ribs 2 could be stretched out . at the same time , when the buckle 54 is pressed by the slippery block 64 , the slippery block 64 would further compress a protrusion 632 of clutch disc 63 for bringing a clutch disc 63 to rotate . as a result , the clutch disc 63 would squeeze a spring sheet 631 , and the buckling member 54 would depart from a wheel 621 of the pulley tackle 62 . further , the driving cord 65 would be upwardly pulled by the upper accommodation 3 , and the pulley 62 would be accordingly rotated , so that a spiral spring 66 could be pressed to store energy . referring to fig4 and 5 , when the umbrella is to be closed , the button 59 is pressed again to let the buckle 54 depart from a buckling orifice 550 . whereby , the pulling cord 53 would stop pulling the lower accommodation 4 . therefore , by means of the relocating spring , the lower accommodation 4 would slip downwardly , and the umbrella ribs 2 are retracted . at the same time , the buckle 54 deviates from the slippery block 64 and thence moves upward under the influence of the relocating spring 643 . accordingly , the clutch disc 63 would no longer impinge on the slippery block 64 , so that the clutch disc 63 would cooperate with the wheel 621 of the pulley tackle 62 via the spring sheet 631 . referring to fig7 , the pulley tackle 62 could merely execute a unidirectional rotation relative to the clutch disc 63 , for instance of a counterclockwise rotation as shown by fig7 . as a result , while compressing the support 1 , the pulley tackle 62 could rotatively retract the driving cord 65 via the spiral spring 66 . if users loose their grip in time of compressing the support 1 , the driving cord 65 would be tightened , and the pulley tackle 62 could not rotate oppositely in view of the restriction of the clutch disc 63 . therefore , by means of the tightened driving cord 65 , the support 1 would not bounce , and a protective effect is achieved . the present invention comprises the driving cord 65 having its one end fixed to the pulley tackle 62 and having its other end fixed to the upper accommodation 3 through the space inside the support 1 . wherein , the driving cord 65 would be hidden in a case of the umbrella support 1 . thus , the driving cord 65 could be prevented from damage during the using , so that the protective device would still execute its function well . preferably , the integral appearance of the umbrella could be maintained . as it should be , after drawn from the pulley tackle 62 , the driving cord 65 would sequentially pass through an interstice between the blocking member 55 and the support 1 and a through hole of the linking pipe 52 . there are two cords in the linking pipe 52 , the pulling cord 53 and the driving cord 65 , and the functions of the two cords are different . thus , in order to separate the two cords , a spacer is further disposed in the through hole of the linking pipe 52 and extended along an elongated direction of the through hole . namely , the through hole of the linking pipe is divided into two holes . the spacer is preferably disposed through a first axis of the linking pipe 52 , so that two half holes would be averagely defined in the linking pipe 52 . also , referring to fig8 , for a handy processing , the spacer adopts a piece of blocking spacer 521 that is stretchingly disposed along the entire through hole of the linking pipe 52 . favorably for saving material , the blocking spacer 521 could adopt a disconnected type . other substantial arrangements of the blocking spacer 521 are not limited as long as the pulling cord 53 and the driving cord 65 are ensured not to interfere with one another . in order to let the driving cord 65 have a smooth penetration in the base 10 , a third axis of the pulley tackle 62 is perpendicular to the first axis of the linking pipe 52 . as shown in fig7 , the driving cord 65 is drawn from the upright top of the pulley tackle 62 , so that the driving cord 65 could be disposed right down the linking pipe 52 . a first groove 551 is disposed away from the buckling orifice 550 of the blocking member 55 for the cord to slickly pass through and for lessoning the damage opportunity of the driving cord 65 in the base 10 . preferably , the first groove 551 is preferably defined along the surface of the blocking member for ensuring a stronger rolling strength of the blocking member and decreasing the difficulty in processing . besides positioning the first groove along the entire blocking member , a second groove 552 could be partially defined . referring to fig1 , when the second groove 552 is adopted , the second groove 552 is extended from a lower portion of the blocking member 55 to a middle portion of the same . concurrently , in the middle portion of the blocking member 55 , the second groove 552 communicates with an axial aperture of the blocking member via an aperture 553 . whereby , after passing through the second groove 552 , the driving cord 65 would thence penetrate the aperture 553 to the axial aperture of the blocking member and finally connect with the upper accommodation through the through hole of the linking pipe . in order to keep an identical movement to the cords , the first and second grooves 551 , 552 are preferably defined parallel to the second axis of the blocking member 55 . the present invention takes advantage of hiding the driving cord 65 in the inner space in the support 1 to achieve a preferable operation . moreover , the buckle or other parts of the umbrella would not interfere with each other , so that the open and close process of the umbrella is ensured to perform like the conventional ; other demanding parts are not required , either . therefore , the protective device can be assured to perform efficiently , and the developing cost is also effectively saved . the present invention is not limited by abovementioned embodiments and drawings . appropriate changes or modification to the disclosure by the person skilled in the art still belongs to the claimed scope .
a protective improvement on a collapsible umbrella includes a driving cord directly penetrating a base for connecting to an upper accommodation . the driving cord has its one end fixed to a pulley tackle and its other end fixed to the upper accommodation . a spacer is axially disposed inside a part of the through hole o and extends along an elongated direction of the through hole o for dividing up the part of the through hole o into two half through holes h &# 39 ; s , and for separating the driving cord from the pulling cord to facilitate an independent and non - overlapping working space of the driving cord and the pulling cord .