阅读说明：本技术 一种伸缩伞自动开合结构以及自动伸缩伞 (Automatic opening and closing structure of telescopic umbrella and automatic telescopic umbrella ) 是由 丁海波 许进鹏 王美珍 于 2020-12-21 设计创作，主要内容包括：本发明公开一种伸缩伞自动开合结构,包括伞杆以及开合装置,其中,开合装置包括柔性钢条,伸缩连接件以及钢条驱动装置,钢条驱动装置设在伞杆的下端,柔性钢条的一端与伞杆的上端连接且另一端与钢条驱动装置连接,伸缩连接件的上端与伞杆的上端连接且下端与伞杆的下端连接,伸缩连接件具有供柔性钢条穿过的固定孔,伸缩连接件包括间隔连接设置的第一连接单体和第二连接单体。与现有技术相比,本发明开合结构的结构牢固紧凑,能够实现伞杆平稳伸缩。本发明还公开一种自动伸缩伞,还包括伞骨和伞面,伞骨与上巢和下巢连接,伞面连接在伞骨上。与现有技术相比,本发明自动伸缩伞能够自动平稳开合,结构强度高,开合操作方便。(The invention discloses an automatic opening and closing structure of a telescopic umbrella, which comprises an umbrella rod and an opening and closing device, wherein the opening and closing device comprises a flexible steel bar, a telescopic connecting piece and a steel bar driving device, the steel bar driving device is arranged at the lower end of the umbrella rod, one end of the flexible steel bar is connected with the upper end of the umbrella rod, the other end of the flexible steel bar is connected with the steel bar driving device, the upper end of the telescopic connecting piece is connected with the upper end of the umbrella rod, the lower end of the telescopic connecting piece is connected with the lower end of the umbrella rod, the telescopic connecting piece is provided with a fixing hole for the flexible steel bar to pass through, and the telescopic. Compared with the prior art, the opening and closing structure has firm and compact structure and can realize stable extension of the umbrella rod. The invention also discloses an automatic telescopic umbrella, which further comprises umbrella ribs and an umbrella cover, wherein the umbrella ribs are connected with the upper nest and the lower nest, and the umbrella cover is connected to the umbrella ribs. Compared with the prior art, the automatic telescopic umbrella can automatically and stably open and close, has high structural strength and is convenient to open and close.)

1. The utility model provides an automatic structure that opens and shuts of flexible umbrella, includes the flexible device that opens and shuts of telescopic umbrella pole and drive umbrella pole, a serial communication port, the device that opens and shuts includes flexible billet, telescopic connection spare and billet drive arrangement, billet drive arrangement establishes the lower extreme at the umbrella pole, the one end of flexible billet is connected and the other end is connected with billet drive arrangement with the upper end of umbrella pole, telescopic connection spare's upper end is connected and the lower extreme of lower extreme and umbrella pole with the upper end of umbrella pole is connected, telescopic connection spare has the fixed orifices that supplies flexible billet to pass, telescopic connection spare includes that the interval connects the first connection monomer and the second connection monomer that set up.

2. The automatic opening and closing structure of a telescopic umbrella as claimed in claim 1, wherein the first connecting unit comprises a first body, the first body is provided with a first fixing hole, the lower end of the first body is provided with a first connecting protrusion extending downward, and the lower end of the first connecting protrusion is provided with a first locking protrusion protruding toward the inner side of the first body.

3. The automatic opening and closing structure of a telescopic umbrella as claimed in claim 2, wherein the second connecting unit comprises a second body, the second body is provided with a second fixing hole, the sidewall of the second body is provided with a first sliding groove slidably engaged with the first connecting protruding strip, and the upper end of the first sliding groove is provided with a first engaging protrusion protruding outward.

4. An automatic opening and closing structure of a telescopic umbrella as claimed in claim 3, wherein said first chute is vertically provided through said second body.

5. The automatic opening and closing structure of a retractable umbrella as claimed in claim 4, wherein the sidewall of the first body is provided with a first receding groove above the first connecting protrusion.

6. The automatic opening and closing structure of a telescopic umbrella as claimed in claim 5, wherein the lower end of the second body is provided with a second connecting protrusion extending downward, and the lower end of the second connecting protrusion is provided with a second catching protrusion protruding toward the inside of the second body.

7. The automatic opening and closing structure of a telescopic umbrella as claimed in claim 6, wherein the side wall of the first body is provided with a second sliding groove slidably engaged with the second connecting rib, and the upper end of the second sliding groove is provided with a second engaging protrusion protruding outward.

8. The automatic opening and closing structure of a telescopic umbrella as claimed in claim 7, wherein said second chute is vertically provided through said first body.

9. The automatic opening and closing structure of a telescopic umbrella as claimed in claim 8, wherein the sidewall of the second body is provided with a second receding groove above the second connecting protrusion.

10. The automatic opening and closing structure of a retractable umbrella as claimed in claim 9, wherein said first connecting ribs and said second connecting ribs have the same length.

Technical Field

The invention relates to the field of umbrellas, in particular to an automatic opening and closing structure of a telescopic umbrella and the automatic telescopic umbrella.

Background

The umbrella is a tool for shading sun or rain and snow. The umbrella needs to be operated by both hands when being opened and closed, and is very inconvenient to use. Therefore, people develop an umbrella capable of automatically opening and closing, the existing automatic opening and closing umbrella mainly drives an umbrella rod to automatically extend and retract through a screw rod structure or a flexible rack, and a nut is easily clamped with a screw rod through the umbrella opened and closed through the screw rod structure, so that the lifting of the umbrella rod is very unstable. The umbrella opened and closed by the flexible rack is easy to bend when the umbrella rod extends due to the fact that the flexible rack is soft, and the flexible rack loses supporting force instantly, so that the rack is easy to damage, and the umbrella cannot be opened automatically.

In view of the above, the applicant has made an intensive study to solve the above problems and has made the present invention.

Disclosure of Invention

The invention aims to provide an automatic opening and closing structure of a telescopic umbrella, which is firm and compact in structure and can realize stable extension of an umbrella rod.

The invention also aims to provide an automatic telescopic umbrella which can be automatically and stably opened and closed, has high structural strength and is convenient to open and close.

In order to achieve the above purpose, the solution of the invention is:

the utility model provides an automatic structure that opens and shuts of flexible umbrella, includes the flexible device that opens and shuts of telescopic umbrella pole and drive umbrella pole, wherein, the device that opens and shuts includes flexible billet, flexible connecting piece and billet drive arrangement, billet drive arrangement establishes the lower extreme at the umbrella pole, the one end of flexible billet is connected and the other end is connected with billet drive arrangement with the upper end of umbrella pole, the upper end of flexible connecting piece is connected and the lower extreme of lower extreme and umbrella pole is connected with the upper end of umbrella pole, flexible connecting piece has the fixed orifices that supplies flexible billet to pass, flexible connecting piece includes that the interval connects the first connection monomer and the second that set up and connect the monomer.

Furthermore, first connection monomer includes first main part, be equipped with first fixed orifices in the first main part, the lower extreme of first main part is equipped with downwardly extending's first connection sand grip, the lower extreme of first connection sand grip is equipped with the first buckle boss to the inboard bellied of first main part.

Further, the second connection unit comprises a second main body, a second fixing hole is formed in the second main body, a first sliding groove in sliding fit with the first connection protruding strip is formed in the side wall of the second main body, and a first buckle protruding outwards is arranged at the upper end of the first sliding groove.

Further, the first sliding groove vertically penetrates through the second main body.

Furthermore, the side wall of the first main body is provided with a first yielding groove above the first connecting raised line.

Furthermore, the lower extreme of second main part is equipped with downwardly extending's second and connects the sand grip, the lower extreme of second connection sand grip is equipped with the bellied second buckle boss to second main part inboard.

Further, the lateral wall of first main part is equipped with the second spout with second connection sand grip sliding fit, the upper end of second spout has outside convex second buckle arch.

Further, the second sliding groove vertically penetrates through the first main body.

Furthermore, a second yielding groove is formed in the side wall of the second main body above the second connecting raised line.

Further, the first connecting convex strip and the second connecting convex strip have the same length.

Furthermore, the lower surfaces of the first main body and the second main body are also provided with positioning protrusions protruding downwards, and positioning grooves for the positioning protrusions to be embedded into are formed in the upper surfaces of the first main body and the second main body.

Further, the bellied lateral wall in location slopes to the middle part from top to bottom gradually, the cell wall of constant head tank slopes to the middle part from top to bottom gradually.

Furthermore, the cross section of the flexible steel bar is of an arc-shaped surface structure.

Further, the umbrella pole includes lower segment portion, and the cover is established the middle-section portion on lower segment portion to and the cover is established the upper segment portion on the middle-section portion, lower segment portion lower extreme is equipped with the installation handle, billet drive arrangement sets up on the installation handle.

Further, the opening and closing device further comprises an upper nest, a lower nest, a pull rope, a fixed pulley and a spring, wherein the upper nest is arranged at the upper end of the upper section part, the lower nest is sleeved on the upper section part, the fixed pulley is rotatably connected with the upper end of the upper section part, the pull rope is wound on the fixed pulley, one end of the pull rope is connected with the upper end of the middle section part, the other end of the pull rope is connected with the lower nest, the spring sleeve is arranged on the upper section part, and the upper end and the lower end of the spring are respectively abutted against the upper nest and the lower nest.

Furthermore, one end of the pull rope is provided with a clamping head, the upper end of the inner side wall of the middle section part is provided with a clamping ring which protrudes inwards, and the clamping head is clamped in the clamping ring; the lower nest is provided with a fixed mounting hole, and the other end of the pull rope is embedded into the fixed mounting hole.

Furthermore, the upper nest comprises a fixing block fixed at the upper end of the upper section part, the fixing block is provided with a containing groove for containing the fixed pulley, a first rotating shaft is arranged on the side wall of the containing groove, and the fixed pulley is sleeved on the first rotating shaft.

Further, the lower extreme of fixed block is equipped with and supplies flexible billet male fixed slot, the fixed chamber with the fixed slot intercommunication is seted up to the lateral surface of fixed block, be equipped with on the cell wall of fixed slot to the bellied fixed arch of fixed intracavity, the upper end of flexible billet is equipped with and corresponds complex fixed through hole with fixed arch.

Further, billet drive arrangement includes the motor, the worm, turbine and drive gear, be equipped with the installation cavity of intercommunication in the installation handle, logical groove and mounting hole are led to in the installation be equipped with the second pivot in the installation cavity, drive gear and turbine cover are established in the second pivot, the motor is established in the mounting hole, the power take off end and the worm of motor are connected, and the worm is connected with the turbine meshing, the logical inslot is worn to establish in the installation to flexible billet, is equipped with on drive gear's the outer periphery and drives the tooth, be equipped with on flexible billet's the side with drive tooth complex drive through-hole.

Further, the opening and closing device further comprises a volute spiral spring, a mounting plate is further arranged at the lower end of the mounting handle, a recovery shell is arranged on the mounting plate, and the volute spiral spring is arranged in the recovery shell.

Furthermore, the upper end of the mounting handle is also provided with a connecting groove for inserting the lower section part.

After adopting above-mentioned structure, when the umbrella pole extended, billet drive arrangement driven flexible billet supported umbrella pole upper end and upwards removed, made the umbrella pole constantly upwards extend. When the umbrella rod extends, the telescopic connecting piece is driven to extend upwards together. When the umbrella rod retracts, the steel rod driving device drives the flexible steel rod to drive the upper end of the umbrella rod to move downwards, so that the umbrella rod retracts continuously downwards, and when the umbrella rod retracts, the telescopic connecting piece is driven to move downwards together.

Compared with the prior art, the umbrella rod is compact in structure, the flexible steel bars are used for driving the umbrella rod to stretch, the telescopic connecting pieces are arranged inside the umbrella rod, and the telescopic connecting pieces are used for uniformly fastening the flexible steel bars and stretch together with the flexible steel bars. Therefore, the flexible steel bars are not easy to bend when being extended, and the propping force of the flexible steel bars is enhanced, so that the extension of the umbrella rod is more stable and smooth. In addition, the telescopic connecting piece has a certain supporting effect on the umbrella handle, so that the strength of the whole structure of the umbrella rod can be enhanced, and the service life of the umbrella rod is prolonged.

The utility model provides an automatic flexible umbrella based on above-mentioned flexible umbrella is automatic to be opened and shut structure, wherein, still includes rib and umbrella face, the rib is connected with last nest and lower nest, the umbrella face is connected on the rib.

After adopting above-mentioned structure, compared with prior art, automatic flexible umbrella can automatic steady opening and shutting, and structural strength is high, and the convenient operation that opens and shuts.

Drawings

Fig. 1 is a perspective view of the external structure of the folding structure of the present invention.

Fig. 2 is a perspective view of the external structure of the opening and closing structure of the present invention when it is extended.

Fig. 3 is a schematic cross-sectional view of the folding structure of the present invention.

Fig. 4 is a schematic cross-sectional view of the opening/closing structure of the present invention when it is extended.

Fig. 5 is a perspective view of the first connection unit.

Fig. 6 is a perspective view of the external structure of the second connecting unit.

Fig. 7 is a perspective view of the connection structure of the first connection unit and the second connection unit.

Fig. 8 is a partially enlarged view of the area a in fig. 4.

Fig. 9 is a partially enlarged view of the region B in fig. 4.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

As shown in fig. 1-9, an automatic opening and closing structure of telescopic umbrella, including telescopic umbrella pole 1 and the flexible device that opens and shuts of drive umbrella pole 1, wherein, the device that opens and shuts includes flexible billet 2, flexible connector 3 and billet drive arrangement 4, billet drive arrangement 4 establishes the lower extreme at umbrella pole 1, flexible billet 2 and flexible connector 3 set up inside umbrella pole 1, and the upper end of flexible billet 2 and the upper end fixed connection of umbrella pole 1 and the other end are connected with billet drive arrangement 4, the upper end of flexible connector 3 is connected with the upper end of umbrella pole 1 and the lower extreme is connected with the lower extreme of umbrella pole 1, flexible connector 3 has the fixed orifices 31 that supplies flexible billet 2 to pass.

After adopting above-mentioned structure, when umbrella pole 1 extends, steel bar drive arrangement 4 drive flexible steel bar 2 support umbrella pole 1 upper end upward movement, make umbrella pole 1 constantly upwards extend. When the umbrella rod 1 extends, the telescopic connecting piece 3 is driven to extend upwards together. When the umbrella rod 1 retracts, the steel rod driving device 4 drives the flexible steel rod 2 to drive the upper end of the umbrella rod 1 to move downwards, so that the umbrella rod 1 retracts downwards continuously, and the umbrella rod 1 retracts to drive the telescopic connecting piece 3 to move downwards together.

Compared with the prior art, the umbrella rod is compact in structure, the flexible steel bars 2 drive the umbrella rod 1 to stretch, the telescopic connecting pieces 3 are arranged inside the umbrella rod 1, and the telescopic connecting pieces 3 uniformly fasten the flexible steel bars 2 and stretch together with the flexible steel bars 2. Therefore, the flexible steel bar 2 is not easy to bend when being extended, and the propping force of the flexible steel bar 2 is enhanced, so that the umbrella rod 1 is more stably and smoothly extended. In addition, the telescopic connecting piece 3 has a certain supporting effect on the umbrella handle, so that the overall structural strength of the umbrella rod 1 can be enhanced, and the service life of the umbrella rod 1 is prolonged.

Preferably, the telescopic connector 3 comprises a first connecting unit 32 and a second connecting unit 33 which are arranged at intervals, and the first connecting unit 32 and the second connecting unit 33 can be connected in a sliding or snap manner. With the above structure, the telescopic connector 3 is actually formed by connecting a plurality of first connecting units 32 and second connecting units 33 arranged at intervals. The top of the telescopic connecting piece 3 is fixedly connected with the upper end of the umbrella rod 1, and the bottom of the telescopic connecting piece 3 is fixedly connected with the lower end of the umbrella rod 1. Because the first connecting single body 32 and the second connecting single body 33 can slide relatively, when the umbrella rod 1 extends upwards, the first connecting single body 32 or the second connecting single body 33 above is driven to slide upwards, and after the first connecting single body 32 or the second connecting single body 33 above moves for a certain distance, the first connecting single body 32 or the second connecting single body 33 above and the second connecting single body 33 or the first connecting single body 32 below are buckled with each other, so that the second connecting single body 33 or the first connecting single body 32 below is driven to slide upwards. When the umbrella rod 1 retracts downwards, the upper first connecting unit 32 or the second connecting unit 33 slides downwards and then abuts against the lower second connecting unit 33 or the first connecting unit 32 to move downwards together. Therefore, the telescopic connecting piece 3 can stretch and move along with the umbrella rod 1 and the flexible steel bar 2, so that the telescopic connecting piece 3 can fix each small section of the flexible steel bar 2 at any time, the flexible steel bar 2 is effectively prevented from being bent, and the phenomenon that the umbrella cannot be opened is avoided. In addition, when the telescopic connecting piece 3 extends, the first connecting units 32 and the second connecting units 33 are sequentially fastened with each other, so that the umbrella rod 1 is supported to a certain extent, and the structural strength of the umbrella rod 1 is enhanced.

Preferably, in the present embodiment, in order to realize that the first connection unit 32 and the second connection unit 33 can slide relatively, and after moving a distance, they are snapped to each other. The first connecting unit 32 includes a first body 321, a first fixing hole is formed on the first body 321, a first connecting protrusion 322 extending downward is formed at a lower end of the first body 321, and a first fastening boss 323 protruding toward an inner side of the first body 321 is formed at a lower end of the first connecting protrusion 322. The second connection unit 33 includes a second main body 331, a second fixing hole is formed in the second main body 331, the second main body 331 and the second main body 331 have the same structure and shape, a first sliding slot 332 slidably engaged with the first connection protruding strip 322 is formed in a side wall of the second main body 331, and a first fastening protrusion 333 protruding outward is formed at an upper end of the first sliding slot 332. With the above structure, the first connecting protrusion 322 can slide in the first sliding slot 332, so that the first connecting unit 32 can slide up and down relative to the second connecting unit 33. In the process that the first connection unit 32 moves upward, the upper surface of the first snap projection 323 can abut against the lower surface of the first snap projection 333 to be fastened, so that the first connection unit 32 is prevented from being separated from the second connection unit 33. When the first connecting unit 32 moves downward, the lower surface of the first body 321 abuts against the upper surface of the second body 331, so as to drive the second connecting unit 33 to move downward together.

More preferably, the first sliding groove 332 vertically penetrates through the second main body 331, and the sidewall of the first main body 321 is provided with a first yielding groove 324 above the first connecting protrusion 322, after the above structure is adopted, when the telescopic connector 3 is shortened, the first connecting protrusion 322 can slide downwards along the first sliding groove 332 and extend into the first yielding groove 324. Thus, the first connecting protrusions 322 can be set to have a longer length, so that when the telescopic connector 3 is extended, the first connecting units 32 and the second connecting units 33 have a longer distance therebetween, and the number of the first connecting units 32 and the second connecting units 33 can be appropriately reduced under the condition of ensuring the strength of the telescopic connector 3, thereby reducing the manufacturing cost and optimizing the structure of the telescopic connector 3.

Preferably, in order to further enhance the connection strength between the first connection unit 32 and the second connection unit 33, a second connection protrusion 334 extending downward is disposed at the lower end of the second main body 331, a second locking protrusion 335 protruding toward the inner side of the second main body 331 is disposed at the lower end of the second connection protrusion 334, a second sliding groove 325 slidably engaged with the second connection protrusion 334 is disposed on the sidewall of the first main body 321, and a second locking protrusion 326 protruding outward is disposed at the upper end of the second sliding groove 325. With the above structure, the second connecting protrusion 334 can slide in the second sliding groove 325, so that the second connecting unit 33 can slide up and down relative to the first connecting unit 32. In the process that the second connecting unit 33 moves upward, the upper surface of the second snap boss 335 can abut against the lower surface of the second snap projection 326 to be fastened, so that the second connecting unit 33 is prevented from being separated from the first connecting unit 32. When the second connecting unit 33 moves downward, the lower surface of the second body 331 abuts against the upper surface of the first body 321, so as to drive the first connecting unit 32 to move downward together.

More preferably, the second sliding groove 325 vertically penetrates the first body 321, and a second receding groove 336 is formed on a sidewall of the second body 331 above the second connecting protruding strip 334. After adopting the above structure, when the telescopic connector 3 is shortened, the second connecting convex strip 334 can slide downwards along the second sliding groove 325 and extend into the second abdicating groove 336. Thus, the second coupling protrusion 334 can be set to have a longer length, so that when the telescopic connector 3 is extended, the second coupling unit 33 and the first coupling unit 32 have a longer distance therebetween, and the number of the first coupling unit 32 and the second coupling unit 33 can be appropriately reduced under the condition that the strength of the telescopic connector 3 is ensured, thereby reducing the manufacturing cost and optimizing the structure of the telescopic connector 3.

More preferably, the lengths of the first connecting protrusion 322 and the second connecting protrusion 334 are the same, the positions of the first locking protrusion 323 and the second locking protrusion 335 on the first connecting protrusion 322 and the second connecting protrusion 334 are the same, and the positions of the first locking protrusion 333 and the second locking protrusion 326 in the first sliding groove 332 and the second sliding groove 325 are the same. With the above structure, the distance between the first connecting unit 32 and the second connecting unit 33 and the distance between the fixing holes 31 are equal in the extended state of the telescopic connection member 3, so that the fixing points on the flexible steel bar 2 are uniformly arranged, and the supporting and fastening force applied to the flexible steel bar 2 is more uniform.

Preferably, the lower surfaces of the first and second bodies 321 and 331 are further provided with positioning protrusions 34 protruding downward, and the upper surfaces of the first and second bodies 321 and 331 are provided with positioning grooves 35 into which the positioning protrusions 34 are inserted. The outer side wall of the positioning protrusion 34 gradually inclines toward the middle from top to bottom, and the groove wall of the positioning groove 35 gradually inclines toward the middle from top to bottom. After adopting above-mentioned structure, protruding 34 of location and constant head tank 35 are the toper structure, telescopic connection spare 3 is when retracting, protruding 34 of location of upper end can be very easy insert in the constant head tank 35, thereby fix a position first connection monomer 32 and second connection monomer 33, avoid first connection monomer 32 and second connection monomer 33 skew umbrella pole 1 center, make first connection sand grip 322 and second connection sand grip 334 can stretch into smoothly in first groove 324 and the second groove 336 of stepping down.

More preferred, the transversal arc face structure of personally submitting outside hunch-up of flexible billet 2 adopts above-mentioned structure, and flexible billet 2 has better supporting effect when flexible, can further prevent that flexible billet 2 from bending.

Preferably, in this embodiment, the telescopic umbrella stick 1 is a three-section umbrella stick 1, and comprises a lower section 11, a middle section 12 sleeved on the lower section 11, and an upper section 13 sleeved on the middle section 12, wherein the lower end of the lower section 11 is provided with a mounting handle 14, and the steel rod driving device 4 is arranged on the mounting handle 14.

More preferably, the opening and closing device further includes an upper nest 51, a lower nest 52, a pulling rope 53, a fixed pulley 54 and a spring (not shown), the upper nest 51 is disposed at the upper end of the upper section 13, the lower nest 52 is sleeved on the upper section 13, the fixed pulley 54 is rotatably connected with the upper end of the upper section 13, the pulling rope 53 is wound on the fixed pulley 54, one end of the pulling rope 53 is connected with the upper end of the middle section 12 and the other end is connected with the lower nest 52, the spring is sleeved on the upper section 13, and the upper end and the lower end of the spring respectively abut against the upper nest 51 and the lower nest 52. After the structure is adopted, when the umbrella is opened, the steel bar driving device 4 drives the flexible steel bar 2 to prop against the upper section part 13 to move upwards, so that the upper end of the upper section part 13 is far away from the upper end of the middle section part 12, and the pull rope 53 encircles the fixed pulley 54 to pull the lower nest 52 to be close to the upper nest 51, thereby realizing the umbrella opening; when the umbrella is closed, the steel bar driving device 4 drives the flexible steel bar 2 to drive the upper section part 13 to move downwards, so that the upper end of the upper section part 13 is close to the upper end of the middle section part 12, and the upper nest 51 pushes the lower nest 52 to be away from the upper nest 51 under the elastic force action of the spring, thereby realizing the closing of the umbrella.

Preferably, one end of the pull rope 53 is provided with a clamping head 531, the upper end of the inner side wall of the middle section part 12 is provided with a clamping ring 121 which protrudes inwards, and the clamping head 531 is clamped in the clamping ring 121; the lower nest 52 is provided with a fixing mounting hole 521, and the other end of the pull rope 53 is embedded in the fixing mounting hole 521 and then can be bonded by an adhesive to prevent the pull rope 53 from falling off. By adopting the structure, the pull rope 53 is more convenient to install and is more firm to connect.

Preferably, the upper nest 51 comprises a fixing block 511 fixed at the upper end of the upper section 13, the upper nest 51 is provided with a sleeve portion fixedly sleeved outside the upper section 13, the fixing block 511 is arranged in the sleeve portion, and the lower end surface of the fixing block 511 is also provided with a positioning protrusion 34 embedded in the positioning groove 35, so that the fixing block 511 and the telescopic connecting piece 3 are connected more firmly. The fixing block 511 has an accommodating groove 512 for accommodating the fixed pulley 54, the accommodating groove 512 forms an opening for the rope 53 to extend into and out of on the lower surface and the outer side surface of the fixing block 511, a first rotating shaft is arranged on the side wall of the accommodating groove 512, and the fixed pulley 54 is sleeved on the first rotating shaft.

Preferably, the lower extreme of fixed block 511 is equipped with and supplies flexible billet 2 male fixed slot 513, and the fixed chamber 514 that communicates with fixed slot 513 is seted up to the lateral surface of fixed block 511, is equipped with on the cell wall of fixed slot 513 to the bellied fixed protrusion 515 in the fixed chamber 514, and the upper end of flexible billet 2 is equipped with the fixed through-hole that corresponds the complex with fixed protrusion 515. By adopting the structure, the flexible steel bar 2 is more firmly connected with the fixing block 511.

Preferably, in this embodiment, the steel bar driving device 4 includes a motor 41, a worm 42, a worm wheel 43 and a driving gear 44, a communicating installation cavity 141 is provided in the installation handle 14, an installation through groove 142 and an installation hole, 13, a second rotating shaft is provided in the installation cavity 141, the driving gear 44 and the worm wheel 43 are sleeved on the second rotating shaft, the motor 41 is provided in the installation hole 143, a power output end of the motor 41 extends into the installation cavity 141 to be connected with the worm 42, the worm 42 is connected with the worm wheel 43 in a meshing manner, the flexible steel bar 2 is slidably connected in the installation through groove 142 in a penetrating manner, a driving tooth is provided on an outer circumferential surface of the driving gear 44, and a driving through hole matched with the driving tooth is. During operation, the motor 41 rotates to drive the worm 42 to drive the worm wheel 43 to rotate, and simultaneously, the driving gear 44 rotates, and the driving gear 44 drives the flexible steel bar 2 to ascend or descend through the meshing of the driving teeth and the driving through holes. By adopting the structure, the structure is compact, and the transmission ratio is larger.

Preferably, the opening and closing device further comprises a spiral spring 6, a mounting plate 144 is further arranged at the lower end of the mounting handle 14, a recovery housing 145 is arranged on the mounting plate 144, and the spiral spring 6 is arranged in the recovery housing 145. Adopt above-mentioned structure, when closing the umbrella, volute spiral spring 6 pulling flexible steel strip 2 withdraws in retrieving casing 145 for flexible steel strip 2 retrieves more conveniently, plays the effect of protection flexible steel strip 2 simultaneously.

Preferably, the upper end of the mounting handle 14 is further provided with a connecting groove 146 into which the lower section 11 is inserted. After adopting above-mentioned structure, make lower segment portion 11 and installation handle 14 be connected more firmly.

An automatic telescopic umbrella based on the automatic opening and closing structure of the telescopic umbrella further comprises umbrella ribs and an umbrella cover, wherein the umbrella ribs are connected with an upper nest 51 and a lower nest 52, and the umbrella cover is connected onto the umbrella ribs.

After adopting above-mentioned structure, compared with prior art, automatic flexible umbrella can automatic steady opening and shutting, and structural strength is high, and the convenient operation that opens and shuts.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.