Abstract: An elastic force enhancing structure is provided for a center post of a self-opening/closing umbrella. The center post includes inner, intermediate, and outer tubes telescopically connected. A primary spring is received in the center post. The outer tube receives therein an elastic force enhancing spring and a joint sleeve that has an upper end forming an inner flange extends inwardly and a lower end forming an outer flange extends outwardly. The joint sleeve is fit over an upper end of the primary spring to have the inner flange and the upper end of the primary spring in abutting engagement. The elastic force enhancing spring has a lower end fit over the joint sleeve so that the lower end is in abutting engagement with the outer flange. As such, the elastic force enhancing spring is coupled, via the joint sleeve, to the primary spring to provide an extended configuration.

Abstract: A contraction structure of center post of self-opening umbrella includes an outer tube and an intermediate tube telescopically fit to each other. The intermediate tube has an upper end to which an outer tube plug is mounted. The center post receives therein two sections of runner cord. The two sections of runner cord each have an end fixed to the outer tube plug and an opposite end extending around a runner cord pulley mounted to an upper end of the center post and fixed to a runner at a first runner-cord fixed position. The present invention applies two sections of runner cord to simultaneously operate so that in withdrawing the runner, two identical pulling forces are applied to the runner to enable smooth withdrawal of the runner. The present invention reduces the number of pulleys used, simplifies the structure, and improves the liability of the umbrella and extends lifespan.

Abstract: The present invention provides an elastic force magnifying structure of self-opening/closing umbrella. The umbrella includes a central post that comprises an inner tube, an intermediate tube, and an outer tube telescopically fit to each other. The central post receives a primary spring received therein. The elastic force magnifying structure includes an elastic force increasing spring arranged inside the outer tube. The elastic force increasing spring is coupled by a coupling sleeve to the primary spring to serve as an extension thereof.

Abstract: A telescopic tube structure for automatic umbrellas includes a tube assembly comprised of an outer tube, a middle tube, and an inner tube, which are telescopically interconnected; wherein a plug is fixedly fitted into a top portion of the middle tube, a bullet-shaped element is provided in the tube assembly, a runner string is connected to the bullet-shaped element at a first end thereof, and is sequentially looped around a first runner-string pulley at a top portion of the tube assembly and a second runner-string pulley of a runner and then connected to a cap at a second end thereof, an outer-tube string is connected to the bullet-shaped element at a first end thereof, and is looped around an outer-tube string pulley of the plug and connected to a bottom portion of the outer tube at a second end thereof. The structure may allow umbrellas to be operated more conveniently.

Abstract: The present invention provides an elastic force magnifying structure of self-opening/closing umbrella. The umbrella includes a central post that comprises an inner tube, an intermediate tube, and an outer tube telescopically fit to each other. The central post receives a primary spring received therein. The elastic force magnifying structure includes an elastic force increasing spring arranged inside the outer tube. The elastic force increasing spring is coupled by a coupling sleeve to the primary spring to serve as an extension thereof.

Abstract: A self-closing collapsible umbrella is disclosed and an example of a three-fold umbrella is described. The umbrella includes a central shaft including a first section that includes a handle carrying an actuation button. A positioning seat that receives a retention block arranged therein is provided between the first section and a second section of the shaft and between the second section and a third section of the shaft. As such, the umbrella is opened manually to have the second section extending and positioned by the retention block engaging an upper end of the first section, and the third section is positioned by being retained at the upper end of the second section. To close the umbrella, a collapsing ring is depressed to drive a rotation block of a control seat to release the engagement of the retention block. Collapsing springs arranged on umbrella ribs apply a force to retract the sections of the central shaft to thereby complete the collapse of the umbrella.

Abstract: A telescopic tube structure for automatic umbrellas includes a tube assembly comprised of an outer tube, a middle tube, and an inner tube, which are telescopically interconnected; wherein a plug is fixedly fitted into a top portion of the middle tube, a bullet-shaped element is provided in the tube assembly, a runner string is connected to the bullet-shaped element at a first end thereof, and is sequentially looped around a first runner-string pulley at a top portion of the tube assembly and a second runner-string pulley of a runner and then connected to a cap at a second end thereof, an outer-tube string is connected to the bullet-shaped element at a first end thereof, and is looped around an outer-tube string pulley of the plug and connected to a bottom portion of the outer tube at a second end thereof The structure may allow umbrellas to be operated more conveniently.

Abstract: A central shaft control structure is provided for a self-opening/closing umbrella and is arranged in a handle of the umbrella for self-opening/closing of the umbrella, including a safety device composed of a reversal prevention wheel having a toothed surface, an operation bar comprising a pawl, and a barrel fit over the operation bar. The reversal prevention wheel comprises a safety rope wrapped therearound and having an end fixed to a third central shaft segment. When errors occur in the course of compression in closing the umbrella, the central shaft that is being compressed can be held in position, so that instantaneous spring back of the central shaft caused by an umbrella opening spring that is in a compressed condition can be prevented to ensure safety of operation and control of the self-opening/closing umbrella.

Abstract: A central shaft control structure is provided for a self-opening/closing umbrella and is arranged in a handle of the umbrella for self-opening/closing of the umbrella, including a safety device composed of a reversal prevention wheel having a toothed surface, an operation bar comprising a pawl, and a barrel fit over the operation bar. The reversal prevention wheel comprises a safety rope wrapped therearound and having an end fixed to a third central shaft segment. When errors occur in the course of compression in closing the umbrella, the central shaft that is being compressed can be held in position, so that instantaneous spring back of the central shaft caused by an umbrella opening spring that is in a compressed condition can be prevented to ensure safety of operation and control of the self-opening/closing umbrella.

Abstract: A central shaft control structure is provided for a self-opening/closing umbrella and is arranged in a handle of the umbrella for self-opening/closing of the umbrella, including a safety device composed of a reversal prevention wheel having a toothed surface, an operation bar comprising a pawl, and a barrel fit over the operation bar. The reversal prevention wheel comprises a safety rope wrapped therearound and having an end fixed to a third central shaft segment. When errors occur in the course of compression in closing the umbrella, the central shaft that is being compressed can be held in position, so that instantaneous spring back of the central shaft caused by an umbrella opening spring that is in a compressed condition can be prevented to ensure safety of operation and control of the self-opening/closing umbrella.

Abstract: A self-closing collapsible umbrella is disclosed and an example of a three-fold umbrella is described. The umbrella includes a central shaft including a first section that includes a handle carrying an actuation button. A positioning seat that receives a retention block arranged therein is provided between the first section and a second section of the shaft and between the second section and a third section of the shaft. As such, the umbrella is opened manually to have the second section extending and positioned by the retention block engaging an upper end of the first section, and the third section is positioned by being retained at the upper end of the second section. To close the umbrella, a collapsing ring is depressed to drive a rotation block of a control seat to release the engagement of the retention block. Collapsing springs arranged on umbrella ribs apply a force to retract the sections of the central shaft to thereby complete the collapse of the umbrella.

Abstract: The invention relates to a rib structure of a two-layer cover umbrella, which mainly includes an elastic rib having an inner folded end. A connector of a related primary rib of the umbrella is provided with an aperture, for that the inner folded end of the elastic rib is penetrated into the aperture and connected with a lateral rod of the connector. The elastic rib will be then extended outward alone the upper surface of the primary rib smoothly for connecting the upper cover and providing a utilized umbrella with two covers.

Abstract: The invention relates to an improved rib structure for using in a four-folded umbrella. The character of the present invention includes a solid first rib, a solid second rib, a solid third rib, and a solid tail rib. Accompanying with branch ribs and elastic ribs, the assembled umbrella can have a small closed volume by use of every rib to be closed to a shaft of the umbrella. Hence, the present umbrella can be used more conveniently and effectively.

Abstract: The invention relates to an improved rib structure for using in a three-folded umbrella. The character of the present invention includes a solid first rib, a solid second rib, and a solid third rib. Accompanying with a branch rib and an elastic rib, the assembled umbrella can have a small closed volume by use of every rib closed to a shaft of the umbrella. Hence, the present umbrella can be used more conveniently and effectively.

Abstract: The invention relates to a rib structure of a two-layer cover umbrella, which mainly includes an elastic rib having an inner folded end. A connector of a related primary rib of the umbrella is provided with an aperture, for that the inner folded end of the elastic rib is penetrated into the aperture and connected with a lateral rod of the connector. The elastic rib will be then extended outward alone the upper surface of the primary rib smoothly for connecting the upper cover and providing a utilized umbrella with two covers.

Abstract: The invention relates to an improved soft handle, which includes a soft shell and a central rod with a top cap and a bottom cap. Liquid is filled in the space between the shell and the rod. The shell has a bottom upward end, which is put around the rod. And the rod has an annual groove and a ring to clip and fix the upward end of the shell on the rod to prevent from any leakage of liquid for keeping utilization of the handle.

Abstract: The invention relates to an umbrella having two shafts, which includes a dual-shaft assembly, a rib frame, a runner, and a handle to complete an automatic umbrella. The dual-shaft assembly includes two independent shafts, wherein the springs are received in one of the shafts, and the controlling wire and the controlling means are received in the other shaft for being easy manufacturing and assembling and increasing utilization in use.

Abstract: An umbrella runner has two engaging slices respectively pivotally connected on two sides of the runner. A sleeve is displaceably disposed around the runner. An annular groove is provided on a top tube of the shaft of the umbrella. The sleeve can be moved upward and downward for pivoting the slices to position the runner and the umbrella in a stable open state.

Abstract: A collapsible umbrella with a small closed volume includes a central shaft and an upper connector. The connector connects with inner ends of every first ribs. Every second rib has its inner end connect with outer end of the first rib and has a middle bent section. The inner end of the second rib can get away from the first rib and be closer to the shaft and the connector when the umbrella is closed that reduces volume of the closed umbrella. Hence, the small volume of the closed umbrella facilitates the carrying or storing for users when not using.

Abstract: The invention relates to a super mini umbrella, which has a shorter length for facilitating carrying by people. The umbrella includes a shaft having its lowest tube with many impressions covered with glue to insert into a connector in a handle of the umbrella. A runner of the umbrella is thus capable of being moved around the connector when the umbrella is closed that can decrease the length of the closed umbrella perfectly.