GB2529176A

GB2529176A - Control mechanism for an automatic collapsible umbrella

Info

Publication number: GB2529176A
Application number: GB1414249.1A
Authority: GB
Inventors: Tien-Cheng Chen; Sun-Feng Sung
Original assignee: XIAMEN MINGHE INDUSTRY CO Ltd
Current assignee: XIAMEN MINGHE INDUSTRY CO Ltd
Priority date: 2014-08-12
Filing date: 2014-08-12
Publication date: 2016-02-17
Also published as: GB201414249D0

Abstract

A collapsible umbrella comprises a control mechanism, a handle G and a shaft assembly B which includes a first tube B1, a second tube B2, and a third tube B3 to control opening and closing of the umbrella frame (A0, fig. 3). The control mechanism comprises a screw rod 6, a nut 7, and a push column 8. The umbrella also comprises a notch C, a runner D, and the operation changing mechanism E. The first tube B1 of the shaft assembly includes a first fitting sleeve 1 with a through hole and a first fixing ring 2; the second tube B2 has a second fitting sleeve 3 and a second fixing ring 4, the third tube B3 has a third fitting sleeve 5 and is attached to the handle G at its lower end. The push column 8 attaches to the nut 7 and is coupled with the second fitting sleeve 3 via the third fitting sleeve 5. Thus as the screw rod 6 is rotated by the motor (91, fig.2) the push column 8 and the second tube B2 are moved upwards and the operation changing mechanism causes the frame (a0, fig.3) to open. By activating the motor (91, fig.2) to rotate in the screw rod 6 in the opposite direction the frame (A0, fig.3) is closed.

Description

CONTROL MECHANISM FOR AN AUTOMATIC COLLAPSIBLE

UMBRELLA

BACKGROUND OF THE INVENTION

Field of the Invention

The present invention relates to an umbrella and, more particularly, to a control mechanism for an automatic collapsible umbrella which automatically expands and retracts the automatic collapsible umbrella.

Description of the Prior Art

A conventional umbrella is employed to shield rain on a rainy day and contains a frame manually pushed to a certain position to expand the umbrella. To improve manual expansion of the umbrella, an automatic umbrella has been developed and contains a button fixed on a handle to be pressed to expand the automatic umbrella automatically, but such an automatic umbrella cannot be retracted automatically, i.e., the automatic umbrella is retracted manually, so a user will get wet during manually retracting the automatic umbrella.

Accordingly, the automatic umbrella is expanded automatically but is retracted manually.

The present invention has arisen to mitigate and/or obviate the afore-described disadvantage.

SUMMARY OF THE INVENTION

The primary objective of the present invention is to provide a control mechanism for an automatic collapsible umbrella which automatically expands and retracts the automatic collapsible umbrella.

To obtain the above objectives, a control mechanism for an automatic collapsible umbrella provided by the present invention is mounted in a handle and a shaft assembly.

The shaft assembly includes at least three tubes, and the at least three tubes are a first tube, a second tube, and a third tube which are connected together to control an operation changing mechanism.

A control mechanism comprises a screw rod, a nut and a push column which are both fitted on the screw rod, the push column is connected with the nut and an upper end of the second tube of the shaft assembly, and a lower end of the screw rod is coupled with a power source in the handle, the power source drives the screw rod to rotate clockwise and counterclockwise, and the nut moves upwardly and downwardly along the screw rod.

The power source is controlled by a button on the handle.

An automatic collapsible umbrella comprises a frame, a notch, a runner, and the operation changing mechanism.

The frame includes a plurality of stretchers joined with the notch and the runner.

The shaft assembly includes a first fitting sleeve fitted on an upper end thereof and includes a first fixing ring retained on a lower end thereof; the first fitting sleeve has a through hole defined on a central position thereof; the first fixing ring has an upper end engaged in the first tube.

The second tube has a second fitting sleeve fitted on the upper end thereof and has a second fixing ring retained on a lower end thereof; the second fitting sleeve has a lower end retained in the second tube; the second fixing ring has an upper end engaged with the second tube.

The third tube has a third fitting sleeve disposed on an upper end thereof and has a lower end fixed on the handle.

The notch is secured on an upper end of the first tube and has a lower end fitted on the first tube to pass through the operation changing mechanism.

The runner is slidably fitted on the first tube.

The push column has a lower end matching with the nut and has an upper end coupled with the second fitting sleeve via the third fitting sleeve, the push column includes two symmetrical parts, such that the nut passes through the push column to drive the second fitting sleeve to move upwardly and downwardly.

The screw rod has an upper end cooperating with the third fitting sleeve.

On expanding the umbrella, the button of the handle is pressed to start the power source, and the power source outputs power to drive the screw rod to rotate clockwise, then the nut moves upwardly along the screw rod, the screw rod pushes the second tube to move upwardly by ways of the push column, wherein the second tube moves upwardly relative to the third tube, and a distance between the second fitting sleeve and the upper end of the third tube increases, so the third pulling string pulls the first fixing ring to move upwardly relative to the second tube to supplement the distance between the second fitting sleeve and the upper end of the third tube and to push the first tube to expand relative to the second tube. In the meantime, a distance between the first fitting sleeve and the second fitting sleeve increases, the first pulling string pulls the runner to move upwardly relative to the first tube by which the distance between the first fitting sleeve and the second fitting sleeve is supplemented, and the runner moves upwardly to push the frame outwardly, thus expanding the umbrella.

On retracting the umbrella, the button of the handle is pressed to start the power source, and the nut moves downwardly along the screw rod to drive the push column, and the second tube is driven by the push column to move downwardly relative to the third tube, thereafter the second pulling string on the second fitting sleeve pulls the runner to move upwardly relative to the first tube, and the frame is retracted by using the first spring and an umbrella surface, thus retracting the umbrella.

Or on expanding the umbrella, the button of the handle is pressed to start the power source, and the power source drives the screw rod to rotate clockwise, then the nut moves upwardly along the screw rod, the screw rod pushes the second fitting sleeve and the second tube to move upwardly by ways of the push column, wherein the second tube moves upwardly relative to the third tube, the distance between the second fitting sleeve and the third fitting sleeve lengthens, so the second end of the second pulling string pulls the first tube to move upwardly relative to the second tube to supplement a distance between the second fitting sleeve and the third fitting sleeve and to push the first tube outwardly relative to the second tube, wherein a distance between the first fitting sleeve and the second fitting sleeve lengthens, and the first pulling string pulls the runner to move upwardly relative to the first tube, so the distance between the first fitting sleeve and the second fitting sleeve is supplemented, and the runner moves upwardly to push a frame outwardly, thus opening the umbrella. On retracting the umbrella, the button of the handle is pressed to stad the power source, and the power source outputs the power to rotate the screw rod counterclockwise, then the nut moves downwardly along the screw rod, thereafter the screw rod drags the second fitting sleeve and the second tube to move downwardly relative to the third tube by means of the screw rod, wherein when the second tube moves downwardly relative to the third tube, the second pulling string drags the first tube to move downwardly relative to the second tube, and the frame is retracted by using a first spring and the umbrella cloth, thereby retracting the umbrella.

Thereby, the umbrella contains the operation changing mechanism with three or two pulling strings in the shaft assembly, and the three or the two pulling strings are in connection with the first tube, the second tube, and the third tube of the shaft assembly, the notch and the runner, the power source in the handle drives the screw rod in the control mechanism to rotate, when the nut on the screw rod moves upwardly or downwardly, the push column is pushed by the nut to drive the second tube to move upwardly or downwardly relative to the third tube, thus expending and retracting the first tube, the second tube, and the third tube of the shaft assembly to open and close the umbrella easily and quickly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a plan view showing the exploded components of a control mechanism for an automatic collapsible umbrella according to a first embodiment of the present invention.

FIG. 1-1 is a perspective view showing the exploded components of a second fitting sleeve of the control mechanism for the automatic collapsible umbrella according to the first embodiment of the present invention.

FIG. 1-2 is a perspective view showing the assembly of the second fitting sleeve and a push column of the control mechanism for the automatic collapsible umbrella according to the first embodiment of the present invention.

FIG. 1-3 is a perspective view showing the exploded components of a third fitting sleeve of the control mechanism for the automatic collapsible umbrella according to the first embodiment of the present invention.

FIG. 1-4 is a perspective view showing the assembly of the third fitting sleeve of the control mechanism for the automatic collapsible umbrella according to the first embodiment of the present invention.

FIG. 1-5 is a perspective view showing the assembly of a screw rod and a handle of the control mechanism for the automatic collapsible umbrella according to the first embodiment of the present invention.

FIG. 2 is a plan view showing the exploded components of a part of the automatic collapsible umbrella according to the first embodiment of the present invention.

FIG. 3 is a plan view showing the expanding operation of the automatic collapsible umbrella according to the first embodiment of the present invention.

FIG. 3a is a cross sectional view taken along the line a-a of FIG. 3.

FIG. 3b is a cross sectional view taken along the line b-b of FIG. 3.

FIG. 4 is a plan view showing the retracting operation of the automatic collapsible umbrella according to the first embodiment of the present invention.

FIG. 4a is a cross sectional view taken along the line c-c of FIG. 4.

FIG. 4b is a cross sectional view taken along the line d-d of FIG. 4.

FIG. 5 is a plan view showing the operation of the automatic collapsible umbrella according to the first embodiment of the present invention.

FIG. 6 is a plan view showing the expanding operation of an automatic collapsible umbrella according to a second embodiment of the present invention.

FIG. 7 is another plan view showing the expanding operation of the automatic collapsible umbrella according to the second embodiment of the present invention.

FIG. 8 is also another plan view showing the expanding operation of the automatic collapsible umbrella according to the second embodiment of the present invention.

FIG. 9 is still another plan view showing the expanding operation of the automatic collapsible umbrella according to the second embodiment of the present invention.

FIG. 10 is a plan view showing the retracting operation of the automatic collapsible umbrella according to the second embodiment of the present invention.

FIG. 11 is another plan view showing the retracting operation of the automatic collapsible umbrella according to the second embodiment of the present invention.

FIG. 12 is also another plan view showing the retracting operation of the automatic collapsible umbrella according to the second embodiment of the present invention.

FIG. 13 is still another plan view showing the retracting operation of the automatic collapsible umbrella according to the second embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED

EMBODIMENTS

The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustration only, preferred embodiments in accordance with the present invention.

With reference to FIGS.1-13, a control mechanism for an automatic collapsible umbrella according to a first embodiment of the present invention is mounted in a handle G and a shaft assembly B, the shaft assembly B includes at least three tubes, such as a first tube Bi, a second tube B2, and a third tube B3 which are connected together to control an operation changing mechanism. The control mechanism F comprises a screw rod 6, a nut 7 and a push column 8 which are both fitted on the screw rod 6, wherein the push column 8 is connected with the nut 7 and an upper end of the second tube B2 of the shaft assembly B, and a lower end of the screw rod 6 is coupled with a power source 9 in the handle 0, such that the power source 9 drives the screw rod 6 to rotate clockwise and counterclockwise, and the nut 7 moves upwardly and downwardly along the screw rod 6. The power source 9 is controlled by a button 01 on the handle 0.

The automatic collapsible umbrella comprises a frame AU, an umbrella cloth (not shown), a notch C, a runner D, and the to operation changing mechanism F. The frame AO has a plurality of stretchers Al joined with the notch C and the runner D, and each stretcher Al has a first spring A2 disposed thereon.

The shaft assembly B includes a first fitting sleeve 1 fitted on an upper end thereof and includes a first fixing ring 2 retained on a lower end thereof; the first fitting sleeve 1 has a through hole 11 defined on a central position thereof and has a first roller 12 fixed on an upper side thereof; the first tube B1 has a first cutout Bll correspond to the first roller 12 to extend a first pulling string El. The first fixing ring 2 is circular and has an upper end engaged in the first tube Bl and a first extending tab 21 extending outwardly from a lower end of the first tube Bl.

The second tube B2 has a second fitting sleeve 3 fitted on the upper end thereof and has a second fixing ring 4 retained on a lower end thereof; the second fitting sleeve 3 has a lower end retained in the second tube B2 and has at least one second roller 31 (a second roller provided in this embodiment) fixed on a central portion thereof; the second fixing ring 4 is circular and has an upper end engaged with the second tube B2, a second extending tab 41 extending outwardly from a lower end of the second tube B2, and a third roller 42 mounted on one side thereof; wherein the second tube B2 has a second cutout B21 correspond to the third roller 42 to extend a second pulling string E2.

The third tube B3 has a third fitting sleeve 5 disposed on an upper end thereof and has a lower end fixed on the handle G. The notch C is secured on an upper end of the first tube Bi and has a lower end fitted on the first tube B1 and a groove Cl formed therein and corresponding to the first cutout B1 1 of the first tube Bi to insert through the first pulling string El. The notch C has a second spring I secured on a lower end thereof; wherein when the umbrella is expanded, the second spring I is pressed by the runner 0.

The runner D is slidably fitted on the first tube B1.

The handle G accommodates the power source 9 and includes the button Gl mounted thereon to start the power source 9 to open or close the umbrella.

Referring to FIGS. 2 and 5, in the first embodiment, the operation changing mechanism F includes the first pulling string El, the second pulling string E2, and a third pulling string E3.

The first pulling string El has a first end disposed on an upper end of the second fitting sleeve 3 and a second end inserting through the first tube Bi and the first roller 12 of the first fitting sleeve 1 to connect with the runner D. The second pulling string E2 has a first end mounted on the upper end of the third tube B3 (i.e., on the third fitting sleeve 5) and a second end extending out of the second cutout B21 of the second tube B2 via the third roller 42 of the second fixing ring 4, inserting into the second tube B2, extending out of the upper end of the second tube B2, inserting into the first tube Bi, and extending out of the upper end of the first tube Bi to fix on the first fitting sleeve 1.

The third pulling string E3 has a first end disposed on the upper end of the third tube B3 (i.e., on the third fitting sleeve 5) and has a second end extending out of the second tube B2 via the second roller 31 of the second fitting sleeve 3 and inserting between the second tube B2 and the first tube B1 to fix on the lower end of the first tube Bi (i.e., on the first extending tab 21 of the first fixing ring 2).

The first end of the second pulling string E2 and the first end of the third pulling string E3 are fixed on the upper end of the third tube B3, so the second pulling string E2 and the third pulling string E3 are connected together.

The push column 8 has a lower end matching with the nut 7 and has an upper end coupled with the second fitting sleeve 3 via the third fitting sleeve 5, the push column 8 includes two symmetrical pads, such as two steel cables, such that the nut 7 passes through the push column 8 to drive the second fitting sleeve 3 to move upwardly and downwardly.

The screw rod 6 has an upper end cooperating with the third fitting sleeve 5, and the third fitting sleeve 5 has at least one guiding slot 51 arranged thereon to move the push column 8. In this embodiment, there are two guiding slots 51 formed on two sides of the third fitting sleeve 5 to accommodate the two symmetrical parts of the push column 8.

Referring to FIGS. 3 to 3b, as expanding the umbrella, the button Gi of the handle G is pressed to start the power source 9, and the power source 9 outputs power to drive the screw rod 6 to rotate clockwise, then the nut 7 moves upwardly along the screw rod 6, the screw rod 6 pushes the second fitting sleeve 3 and the second tube B2 to move upwardly by ways of the push column 8, wherein the second tube B2 moves upwardly relative to the third tube B3, and a distance between the second fitting sleeve 3 and the upper end of the third tube B3 increases, so the third pulling string E3 pulls the first fixing ring 2 to move upwardly relative to the second tube B to supplement the distance between the second fitting sleeve 3 and the upper end of the third tube B3 and to push the first tube B1 to expand relative to the second tube B2. In the meantime, a distance between the first fitting sleeve 1 and the second fitting sleeve 3 increases, the first pulling string El pulls the runner D to move upwardly relative to the first tube Bl by which the distance between the first fitting sleeve 1 and the second fitting sleeve 3 is supplemented, and the runner D moves upwardly to push the frame AO outwardly, thus expanding the umbrella. It is to be noted that during expanding the umbrella, the frame AO is fixed by the third fitting sleeve 5, and the third pulling string E3 and the first pulling string El pull the frame AO to expand outwardly, the second pulling string E2 is applied to shorten a distance between the second fixing ring 4 and the upper end of the third tube B3 and to lengthen a distance between the first fitting sleeve 1 and the third tube B3.

As illustrated in FIGS. 4 to 4b, on retracting the umbrella, the button Gl of the handle G is pressed to start the power source 9, and the power source 9 outputs the power to rotate the screw rod 6 counterclockwise, then the nut 7 moves downwardly along the screw rod 6, thereafter the screw rod 6 drags the second fitting sleeve 3 by means of the screw rod 6, such that the nut 7 pulls the screw rod 8 to move downwardly relative to the third tube B3 and pulls the second tube B2 to move downwardly relative to the third tube B3, the second spring I is pushed by the runner D to move downwardly along the first tube Bi, and the distance between the second fixing ring 4 of the second tube B2 and the upper end of the third tube B3 lengthens, the second pulling string E2 pulls the first fitting sleeve 1 to drive the first tube Bl to move downwardly relative to the second tube B2, the first pulling string El on the

IS

second fitting sleeve 3 releases to pull the runner D to move downwardly along the first tube Bi, and the frame AO is retracted by using the first spring Al and an umbrella surface, thus retracting the umbrella. It is to be noted that during retracting the umbrella, the second pulling string E2 and the first pulling string El pulls the umbrella inwardly, the third pulling string E3 is employed to lengthen the distance between the first fixing ring 2 and the second fitting sleeve 3 and to shorten the distance between the distance between the second fitting sleeve 3 and the upper end of the third tube B3.

With reference to FIGS. 6 to 13, in a second embodiment, an umbrella comprises an operation changing mechanism H, and the operation changing mechanism H includes a first pulling string Hl and a second pulling string H2; the first pulling string Hl has a first end connected with a second fitting sleeve 3 and has a second end extending out of a first tube Bl from a first fitting sleeve 1 via the first roller 12 to couple with the runner D; the second pulling string H2 has a first end joined with a third fitting sleeve 5 and has a second end passing through the second roller 31 of the second fitting sleeve 3 to mount on a lower end of the first tube Bi.

Referring to FIGS. 3 and 6 to 9, as expanding the umbrella, a button Gi of a handle G is pressed to start a power source 9, and the power source 9 outputs power to drive a screw rod 6 to rotate clockwise, then a nut 7 moves upwardly along the screw rod 6, the screw rod 6 pushes a second fitting sleeve 3 and a second tube B2 to move upwardly by ways of a push column 8, wherein the second tube B2 moves upwardly relative to the third tube B3, a distance between the second fitting sleeve 3 and a third fitting sleeve 5 lengthens, so the second end of the second pulling string H2 pulls the first tube Bi to move upwardly relative to the second tube B2 to supplement the distance between the second fitting sleeve 3 and the third fitting sleeve 5 and to push the first tube Bi outwardly relative to the second tube B2, wherein a distance between the first fitting sleeve 1 and the second filling sleeve 3 lengthens, and the first pulling string Hi pulls the runner D to move upwardly relative to the first tube Bi, so the distance between the first filling sleeve 1 and the second filling sleeve 3 is supplemented, and the runner D moves upwardly to push a frame AU outwardly, thus opening the umbrella.

As shown in FIGS. 4 and 10 to 13, on retracting the umbrella, the button Gi of the handle G is pressed to start the power source 9, and the power source 9 outputs the power to rotate the screw rod 6 counterclockwise, then the nut 7 moves downwardly along the screw rod 6, thereafter the screw rod 6 drags the second fitting sleeve 3 and the second tube B2 to move downwardly relative to the third tube B3 by means of the screw rod 6, wherein when the second tube B2 moves downwardly, the distance between the second fitting sleeve 3 and the third fitting sleeve 5 shortens, the second end of the second pulling string H2 drags the first tube Bi to move downwardly relative to the second tube B2, and the distance between the second fitting sleeve 3 and the third fitting sleeve 5 is supplemented, the first tube Bi moves downwardly relative to the second tube B2, and the runner D is pushed by a second spring I to move downwardly along the first tube Bi, the frame AU is retracted by using a first spring Al and an umbrella cloth (not shown), and the distance between the first fitting sleeve 1 and the second fitting sleeve 3 shortens, so the first pulling string Hl is dragged by the runner Hi to supplement the distance between the first fitting sleeve 1 and the second fitting sleeve 3, thereby retracting the umbrella.

As illustrated in FIGS. 1-i and i-2, in the first embodiment and the second embodiment, the second fitting sleeve 3 is made of metal material or plastic material, and the second fitting sleeve 3 has a hanging orifice 32 defined thereon to match with the push column 8. When the second fitting sleeve 3 is made of plastic material, the hanging orifice 32 has a metal loop 33 fixed therein to prolong a lifespan of the push column 8 and the hanging orifice 32, such that a bending portion of the push column 8 contacts with the metal loop 33 to avoid a gap increases because the push column 8 frictions the hanging orifice 32 and to prevent damage of the push column 8. The second fitting sleeve 3 also has a positioning aperture 34 formed therein to cooperate with a first metal cylinder with a first arcuate disc 351 arranged around one end of the first metal cylinder 35 to avoid the positioning aperture 34 cutting the first pulling string, the second pulling string, the third pulling, and the fourth pulling string, thus prolonging the service life of the first pulling string, the second pulling string, the third pulling string, and the fourth pulling string.

With reference to FIGS. 1-3 and 1-4, the third fitting sleeve is made of metal material or plastic material and has an opening 52 to insert the first pulling string, the second pulling string, the third pulling, and the fourth pulling string, wherein the third fitting sleeve 5 is made of plastic material, the opening 52 cooperates with a second metal cylinder 53 having a second arcuate disc 531 arranged around one end of the second metal cylinder 53 to avoid the opening 52 cutting the first pulling string, the second pulling string, the third pulling string, and the fourth pulling string, thus prolonging the service life of the first pulling string, the second pulling string, the third pulling, and the fourth pulling string. In addition, the third fitting sleeve 5 has a recess 54 defined on a side wall thereof to accommodate a protrusion B31 of the third tube B3.

Referring to FIGS. 1-5, the screw rod 6 has a flexible member 61 (such as a rubber sleeve or a rubber pad) arranged on a lower end thereof and located above the power source 9 to avoid the nut 7 hitting an output stem of the power source 9 when the nut 7 moves toward the lower end of the screw rod 6, thus protecting the power source 9.

Thereby, the umbrella contains the operation changing mechanism E or F with three or two pulling strings in the shaft assembly B, and the three or the two pulling strings are in connection with the first tube Bi, the second tube B2, and the third tube B3 of the shaft assembly B, the notch C and the runner D, the power source 9 in the handle G drives the screw rod 6 in the control mechanism F to rotate, when the nut 7 on the screw rod 6 moves upwardly or downwardly, the push column 8 is pushed by the nut 7 to drive the second tube B2 to move upwardly or downwardly relative to the third tube B3, thus expending and retracting the first tube, the second tube, and the third tube of the shaft assembly B to open and close the umbrella easily and quickly.

While various embodiments in accordance with the present invention have been shown and described, it is clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.

Claims

WHAT IS CLAIMED IS: 1. A control mechanism for an automatic collapsible umbrella being mounted in a handle and a shaft assembly; the shaft assembly including at least three tubes, and the at least three tubes being a first tube, a second tube, and a third tube which are connected together to control an operation changing mechanism; wherein the control mechanism comprises a screw rod, a nut and a push column which are both fitted on the screw rod, the push column is connected with the nut and an upper end of the second tube of the shaft assembly, and a lower end of the screw rod is coupled with a power source in the handle, the power source drives the screw rod to rotate clockwise and counterclockwise, and the nut moves upwardly and downwardly along the screw rod; the power source is controlled by a button on the handle; the automatic collapsible umbrella comprises a frame, a notch, a runner, and the operation changing mechanism; the frame includes a plurality of stretchers joined with the notch and the runner; the shaft assembly includes a first fitting sleeve fitted on an upper end thereof and includes a first fixing ring retained on a lower end thereof; the first fitting sleeve has a through hole defined on a central position thereof; the first fixing ring has an upper end 2! engaged in the first tube; the second tube has a second fitting sleeve fitted on the upper end thereof and has a second fixing ring retained on a lower end thereof; the second fitting sleeve has a lower end retained in the second tube; the second fixing ring has an upper end engaged with the second tube; the third tube has a third fitting sleeve disposed on an upper end thereof and has a lower end fixed on the handle; the notch is secured on an upper end of the first tube and has a lower end fitted on the first tube to pass through the operation changing mechanism; the runner is slidably fitted on the first tube; the push column has a lower end matching with the nut and has an upper end coupled with the second fitting sleeve via the third fitting sleeve, the push column includes two symmetrical parts, such that the nut passes through the push column to drive the second fitting sleeve to move upwardly and downwardly; the screw rod has an upper end cooperating with the third fitting sleeve.
2. The control mechanism for the automatic collapsible umbrella as claimed in claim 1, wherein the operation changing mechanism includes a first pulling string, a second pulling string, and a third pulling string; the first pulling string has a first end disposed on an upper end of the second fitting sleeve and a second end inserting through the first tube and a first roller of the first fitting sleeve to connect with the runner; the second pulling string has a first end mounted on the upper end of the third tube and a second end extending out of the lower end of the second tube via the second fixing ring of the second tube, inserting into the second tube, extending out of the upper end of the second tube, inserting into the first tube, and extending out of an upper end of the first tube to fix on a top surface of the first tube; the third pulling string has a first end disposed on the upper end of the third tube and has a second end extending out of the second tube via a second roller of the second fitting sleeve and inserting between the second tube and the first tube to fix on the lower end of the first tube.
3. The control mechanism for the automatic collapsible umbrella as claimed in claim 1, wherein the operation changing mechanism includes a first pulling string and a second pulling string; the first pulling string has a first end connected with the second fitting sleeve and has a second end extending out of the first tube from the first fitting sleeve via a first roller to couple with the runner; the second pulling string has a first end joined with the third fitting sleeve and has a second end passing through the second fitting sleeve to mount on a lower end of the first tube.
4. The control mechanism for the automatic collapsible umbrella as claimed in claim 2, wherein the first fitting sleeve has a first roller fixed on an upper side thereof, the first tube has a first cutout correspond to the first roller to extend the first pulling string, the second tube has a second roller fixed on a central portion thereof, the second fixing ring has a first extending tab extending outwardly from a lower end of the second tube, and a third roller mounted on one side of the first extending tab; wherein the second tube has a second cutout correspond to the third roller to extend the second pulling string; the notch has a groove formed therein and corresponding to the first cutout of the first tube to insert through the first pulling string, the third pulling string has a first end disposed on the upper end of the third tube where the third fitting sleeve is fixed, and the third pulling string has a second end extending out of the second tube via the second roller of the second fitting sleeve and inserting between the second tube and the first tube to fix on the lower end of the first tube where the first extending tab of the first fixing ring is arranged.
5. The control mechanism for the automatic collapsible umbrella as claimed in claim 3, wherein the first fitting sleeve has a first roller fixed on an upper side thereof, the first tube has a first cutout correspond to the first roller to extend the first pulling string, the second tube has a second roller fixed on a central portion thereof, the second fixing ring has a first extending tab extending outwardly from a lower end of the second tube, and a third roller mounted on one side of the first extending tab; wherein the second tube has a second cutout correspond to the third roller to extend the second pulling string; the notch has a groove formed therein and corresponding to the first cutout of the first tube; the second pulling string has a first end joined with the third fitting sleeve and has a second end passing through the second fitting sleeve to mount on a lower end of the first tube.
6. The control mechanism for the automatic collapsible umbrella as claimed in claim 1, wherein the notch has a second spring secured on a lower end thereof, wherein when an umbrella is expanded, the second spring is pressed by the runner.
7. The control mechanism for the automatic collapsible umbrella as claimed in claim 1, wherein the third fitting sleeve has at least one guiding slot arranged thereon to move the push column.
8. The control mechanism for the automatic collapsible umbrella as claimed in claim 1, wherein the screw rod has a flexible member arranged on a lower end thereof and located above the power source.
9. The control mechanism for the automatic collapsible umbrella as claimed in claim 1, wherein the second fitting sleeve is made of plastic material, and the second fitting sleeve has a hanging orifice defined thereon to match with the push column, the hanging orifice has a metal loop fixed therein; the second fitting sleeve also has a positioning aperture formed therein to cooperate with a first metal cylinder with a first arcuate disc arranged around one end of the first metal cylinder; the third fitting sleeve is made of plastic material and has an opening to insert the first pulling string, the opening cooperates with a second metal cylinder having a second arcuate disc arranged around one end of the second metal cylinder.
10. The control mechanism for the automatic collapsible umbrella as claimed in claim 1, wherein the third fitting sleeve has a recess defined on a side wall thereof to accommodate a protrusion of the third tube.
11. A control mechanism for an automatic collapsible umbrella substantially as hereinbefore described with reference to and as shown in the accompanying drawings.