CN109043761B - Opening and closing structure, middle rod and umbrella - Google Patents

Abstract

The invention provides an opening and closing structure, a middle rod and an umbrella. The invention discloses an opening and closing structure, which comprises a pulley, a pull rope and a fixed pulley, wherein the pulley is arranged in an upper nest, the fixed pulley is arranged in a lower nest, one end of the pull rope is arranged at one end, far away from the upper nest, of a middle rod, the other end of the pull rope penetrates through the middle rod and sequentially bypasses the pulley and the fixed pulley and is then fixed in the upper nest, a containing groove is formed in the pulley around the circumferential direction of the pulley, at least one groove wall of the containing groove is obliquely arranged, so that the containing groove is gradually expanded along the direction from the bottom wall of the containing groove to the opening of the containing groove, at least one protrusion is convexly arranged on at least one groove wall of the containing groove, the extending direction of the protrusion is consistent with the oblique direction of the groove wall, and the diameter of the protrusion is gradually reduced along the direction from the bottom wall of the containing groove to the opening of the containing groove; or, the extending direction of the protrusion is perpendicular to the inclined direction of the groove wall, and the vertical distance between the protrusion and the groove wall is smaller than the diameter of the pull rope. The umbrella with the open-close structure has better use stability.

Description

Opening and closing structure, middle rod and umbrella

Technical Field

The invention relates to the technical field of umbrellas, in particular to an opening and closing structure, a middle rod applying the opening and closing structure and an umbrella applying the middle rod.

Background

The existing opening and closing structure of the automatic opening and closing multi-fold umbrella comprises a pulley, a pull rope and a fixed pulley, wherein the pulley is arranged in an upper nest, and the fixed pulley is arranged in a lower nest. One end of the pull rope is arranged at one end, far away from the upper nest, of the middle rod, and the other end of the pull rope penetrates through the middle rod and sequentially bypasses the pulley and the fixed pulley and then is fixed to the upper nest. However, the pulley is in the pivoted in-process, and the stay cord can appear skidding the phenomenon, has influenced the stability in use of automatic many folding umbrella of opening and shutting.

Disclosure of Invention

In view of the above, the present invention provides an opening and closing structure, which is intended to provide an umbrella with better stability.

In order to solve the technical problems, the invention provides an opening and closing structure for opening or folding an umbrella, wherein the umbrella comprises a middle rod, an upper nest arranged at one end of the middle rod and a lower nest slidably sleeved at the other end of the middle rod, the opening and closing structure is characterized by comprising a pulley arranged in the upper nest, a pull rope and a fixed pulley arranged at the lower nest, one end of the pull rope is arranged at one end of the middle rod far away from the upper nest, the other end of the pull rope penetrates through the middle rod and sequentially bypasses the pulley and the fixed pulley and is fixed at the upper nest, a containing groove is formed in the pulley around the circumference direction, at least one groove wall of the containing groove is obliquely arranged, so that the containing groove is gradually expanded along the direction from the bottom wall of the containing groove to the opening of the containing groove, at least one protrusion is convexly arranged on at least one groove wall of the containing groove, the extending direction of the protrusion is consistent with the oblique direction of the groove wall, and the diameter of the protrusion is gradually reduced along the direction from the bottom wall of the containing groove to the opening of the containing groove; or, the extending direction of the protrusion is perpendicular to the inclined direction of the groove wall, and the vertical distance between the protrusion and the groove wall is smaller than the diameter of the pull rope.

Further, the included angle between the inclined direction of the groove wall and the horizontal plane is 40-85 degrees.

Further, a first through hole is formed in the side wall of the upper nest, a second through hole communicated with the first through hole is formed in the bottom wall of the upper nest, the other end of the pull rope penetrates through the middle rod and the second through hole, bypasses the pulley and penetrates out of the upper nest through the first through hole, and after bypassing the fixed pulley, the pull rope is fixed to the upper nest.

Further, the opening and closing structure further comprises a first gear, a worm meshed with the first gear and a motor, the first gear is sleeved on a connecting rod of the pulley, and the motor is connected with the worm.

Further, the opening and closing structure further comprises a second gear and a gearbox connected with the motor, the second gear is connected with the worm, the gearbox comprises a third gear, and the second gear is meshed with the third gear.

The invention also provides a middle rod which comprises an upper nest, a lower nest and the opening and closing structure.

Further, the middle rod further comprises a handle, the handle is arranged at one end, far away from the upper nest, of the middle rod, and the lower nest is arranged between the upper nest and the handle.

Further, the middle rod further comprises a control component, the control component comprises a button arranged on the handle, a circuit board, a switch and a power-off component, wherein the circuit board, the switch and the power-off component are all arranged in the handle, the switch and the power-off component are all electrically connected with the circuit board, and the button can be contacted with the switch.

Further, the control assembly further comprises a battery, two terminals and a spring type electric wire, wherein the two terminals and the spring type electric wire are arranged on the circuit board, one end of the spring type electric wire penetrates through the middle rod to be connected with the motor, the other end of the spring type electric wire is connected with one terminal, and the battery is connected with the other terminal.

Further, the control assembly further comprises a charging interface arranged on the circuit board, and the charging interface is used for charging the battery.

Further, the middle rod comprises an outer tube, at least one middle tube and an inner tube, the at least one middle tube and the outer tube are sequentially sleeved with each other in a sliding mode from inside to outside, the handle is fixed to one end of the inner tube, the lower nest is slidably sleeved on the peripheral wall of the outer tube, and the upper nest is arranged at one end, far away from the handle, of the outer tube.

The invention also provides an umbrella, which comprises the middle rod.

Further, the umbrella further comprises an umbrella rib assembly, the umbrella rib assembly comprises a first umbrella rib, a second umbrella rib and a tension spring, one end of the first umbrella rib is connected with the upper nest, one end of the second umbrella rib is connected with the lower nest, the other end of the second umbrella rib is slidably connected with the first umbrella rib, and two ends of the tension spring are respectively connected with the first umbrella rib and the second umbrella rib.

The opening and closing structure comprises a pulley arranged in an upper nest, a pull rope and a fixed pulley arranged in a lower nest, wherein one end of the pull rope is arranged at one end of a middle rod far away from the upper nest, the other end of the pull rope penetrates through the middle rod and sequentially bypasses the pulley and the fixed pulley and then is fixed on the upper nest, and the pulley can rotate forward or reversely to drive the pull rope to move so as to enable the lower nest to move along a direction close to the upper nest or move along a direction far away from the upper nest, thereby opening or folding the umbrella. Further, at least one groove wall of the accommodating groove is obliquely arranged, so that the accommodating groove is gradually widened along the direction from the bottom wall of the accommodating groove to the opening of the accommodating groove, at least one protrusion is arranged on at least one groove wall of the accommodating groove in a protruding mode, the extending direction of the protrusion is consistent with the oblique direction of the groove wall, and the pull rope is enabled to be limited by the bottom wall, the oblique groove wall and the protrusion in the moving process, so that slipping phenomenon can not occur. The stay cord can be strained gradually at the rotation in-process, and in this process, the diameter of stay cord diminishes gradually to remove along the direction that is close to the diapire gradually, because bellied diameter reduces gradually along the diapire of holding tank to its open-ended direction, makes in the above-mentioned in-process, protruding spacing effect to the stay cord strengthens gradually, prevents that the stay cord from appearing skidding the phenomenon at the in-process that is strained with the pulley, has further improved the stability in use of umbrella. In another embodiment, the extending direction of the protrusion is perpendicular to the inclined direction of the groove wall, the pull rope is gradually tensioned in the rotation process, the diameter of the pull rope is gradually reduced, and the pull rope gradually moves along the direction close to the bottom wall.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a middle rod of the present invention.

Fig. 2 is a schematic view of another angle structure of the middle rod of the present invention.

Fig. 3 is a cross-sectional view of a cane of the present invention.

Fig. 4 is a schematic structural view of the upper nest and the opening and closing structure without the pull rope.

Fig. 5 is a schematic view of another angle structure of the upper nest and the opening and closing structure without the pull rope.

Fig. 6 is a schematic structural view of the upper nest and the opening and closing structure of the present invention.

Fig. 7 is a schematic view of another angle of the upper nest and the opening and closing structure of the present invention.

Fig. 8 is a schematic diagram of the structure of the pulley, worm, first gear and second gear of the present invention.

FIG. 9 is a schematic view of the structure of the umbrella of the present invention.

Fig. 10 is a schematic view of the structure of the middle stick in the opened state of the present invention.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

Referring to fig. 1-9, the present invention provides an opening and closing structure 30 for opening or folding an umbrella 100.

The umbrella 100 comprises a middle rod 10, an upper nest 13 disposed at one end of the middle rod 10, and a lower nest 11 slidably sleeved at the other end of the middle rod 10, wherein the opening and closing structure comprises a pulley 31 disposed in the upper nest 13, a pull rope 32, and a fixed pulley 33 disposed in the lower nest 11, one end of the pull rope 32 is disposed at one end of the middle rod 10 far away from the upper nest 13, the other end of the pull rope 32 passes through the middle rod 10, bypasses the pulley 31 and the fixed pulley 33 in sequence, and is fixed to the upper nest 13, the pulley 31 is provided with a containing groove 311 around the circumferential direction thereof, at least one groove wall 3111 of the containing groove 311 is inclined, so that the containing groove 311 is gradually widened from the bottom wall 3113 of the containing groove 311 to the opening of the containing groove 311, at least one groove wall 3111 of the containing groove 311 is convexly provided with at least one protrusion 313, the extending direction of the protrusion 313 is consistent with the inclined direction of the groove wall 3111, and the diameter of the protrusion 313 is gradually reduced from the bottom wall 3113 of the containing groove 311 to the opening of the containing groove 311; or, the extending direction of the protrusion 313 is perpendicular to the inclined direction of the slot wall 3111, and the vertical distance between the protrusion 313 and the slot wall 3111 is smaller than the diameter of the pull rope 32.

In an embodiment of the present invention, when the extending direction of the protrusion 313 is consistent with the inclination direction of the slot wall 3111, a plurality of protrusions 313 are disposed on the slot wall 3111 at intervals, and the protrusions 313 are arranged radially.

In one embodiment of the present invention, one end of the protrusion 313 is provided on the bottom wall 3113, and the other end extends in an oblique direction of the groove wall 3111.

In an embodiment of the present invention, when the extending direction of the protrusion 313 is perpendicular to the inclined direction of the groove wall 3111, the protrusion 313 has a ring-shaped structure.

It will be appreciated that the annular protrusion 313 is provided on the bottom wall 3113.

The opening and closing structure 30 of the technical scheme of the invention comprises a pulley 31, a pull rope 32 and a fixed pulley 33, wherein the pulley 31 and the pull rope 32 are arranged in the upper nest 13, the fixed pulley 33 is arranged in the lower nest 11, one end of the pull rope 32 is arranged at one end of the middle rod 10 far away from the upper nest 13, the other end of the pull rope 32 passes through the middle rod 10 and sequentially bypasses the pulley 31 and the fixed pulley 33, and then is fixed on the upper nest 13, and the pulley 31 can rotate positively or reversely to drive the pull rope 32 to move so as to enable the lower nest 11 to move along the direction close to the upper nest 13 or move along the direction far away from the upper nest 13, thereby opening or folding the umbrella. Further, at least one groove wall 3111 of the accommodating groove 311 is inclined, so that the accommodating groove 311 is gradually widened along a direction from the bottom wall 3113 of the accommodating groove 311 to the opening of the accommodating groove 311, at least one groove wall 3111 of the accommodating groove 311 is convexly provided with at least one protrusion 313, and an extending direction of the protrusion 313 is consistent with an inclined direction of the groove wall 3111, so that the pulling rope 32 is limited by the bottom wall 3113, the inclined groove wall 3111 and the protrusion 313 in a moving process, and no slipping phenomenon occurs. The pull rope 32 is gradually tensioned during rotation, and during the rotation, the diameter of the pull rope 32 gradually becomes smaller and gradually moves along the direction close to the bottom wall 3113, and the diameter of the protrusion 313 gradually becomes smaller along the direction from the bottom wall 3113 of the accommodating groove 311 to the opening of the accommodating groove 311, so that the limit effect of the protrusion 313 on the pull rope 32 is gradually enhanced during the rotation, the pull rope 32 and the pulley 31 are prevented from slipping during the tensioning, and the stability of the umbrella in use is further improved. In another embodiment, the extending direction of the protrusion 313 is perpendicular to the inclined direction of the groove wall 3111, the pull rope 32 is gradually tensioned during rotation, the diameter thereof is gradually reduced, and the pull rope moves gradually along the direction approaching the bottom wall 3113, and the protrusion 313 can cooperate with the bottom wall 3113 and the side wall 3111 to limit the pull rope in a tensioned state better due to the vertical distance between the protrusion 313 and the bottom wall being smaller than the diameter of the pull rope 32, so as to prevent the pull rope 32 from slipping with the pulley 31 during tensioning, and improve the stability of the umbrella in use.

The inclined direction of the groove wall 3111 is inclined at an angle of 40 ° to 85 °, preferably 50 ° to 80 °, and more preferably 60 ° to 70 ° to the horizontal plane.

In an embodiment of the present invention, the inclination direction of the slot wall 3111 may be inclined at an angle of 40 °, 50 °, 60 °, 70 °, 80 °, or 85 °.

In the technical scheme of the invention, the included angle between the inclined direction of the groove wall 3111 and the horizontal plane is set to be 40-85 degrees, so that the groove wall 3111 can play a better limiting role on the stay rope 32, and the stay rope 32 is prevented from slipping in the moving process.

The side wall of the upper nest 13 is provided with a first through hole 131, the bottom wall of the upper nest 13 is provided with a second through hole 133 communicated with the first through hole 131, and the other end of the pull rope 32 passes through the middle rod 10 and the second through hole 133, bypasses the pulley 31, passes through the first through hole 131 again to penetrate out of the upper nest 13, bypasses the fixed pulley 33 and then is fixed on the upper nest 13.

In one embodiment of the invention, the fixed pulley 33 is fixed to the outer surface of the lower nest 11.

It will be appreciated that the upper nest 13 includes an outer housing and an inner housing accommodated in the outer housing, wherein a via hole is formed at one end of the outer housing facing the lower nest 11, a first through hole 131 is formed at a side wall of the inner housing, and the second through hole 133 is formed at a bottom wall of the inner housing. One end of the pull rope 32 is fixed at one end of the middle rod 10 far away from the upper nest 13, the other end of the pull rope 32 passes through the middle rod 10, extends into the inner shell through the through hole of the outer shell and the second through hole 133, extends out of the inner shell and the outer shell through the first through hole 131 and the through hole of the outer shell, bypasses the fixed pulley 33, and is then fixed at the upper nest 13.

In the present invention, the lower nest 11 can move relative to the upper nest 13 through the pulley 31, the fixed pulley 33 and the pulling rope 32, so as to open or fold the umbrella 100.

The opening and closing structure 30 further comprises a first gear 315, a worm 34 meshed with the first gear 315, and a motor 37, the first gear 315 is sleeved on a connecting rod 314 of the pulley 31, and the motor 37 is connected with the worm 34.

It will be appreciated that the first gear 315 is disposed coaxially with the pulley 31. The worm 34 is disposed perpendicular to the first gear 315.

It will be appreciated that the motor 37 includes a housing matching the inner housing of the upper nest 13, a third through hole matching the first through hole 131 is formed in a side wall of the housing, and a fourth through hole matching the second through hole 133 is formed in a bottom of the housing. The pulley 31, the first gear 315, the second gear 35, and the transmission are all accommodated in a housing of the motor 37.

Further, one end of the pull rope 32 is fixed to one end of the middle rod 10 far away from the upper nest 13, the other end of the pull rope 32 passes through the middle rod 10, passes through the through hole of the outer shell, the second through hole 133 and the fourth through hole of the motor housing, stretches into the inner shell of the upper nest 13 and the shell of the motor 37, stretches out of the motor 37 and the upper nest 13 through the third through hole of the motor 37, the first through hole 131 of the inner shell and the through hole of the outer shell of the upper nest 13, bypasses the fixed pulley 33, and is then fixed to the upper nest 13.

In another embodiment of the present invention, the upper nest 13 includes only a housing, one end of the housing is provided with a fifth through hole, the motor 37 has a housing matched with the housing of the upper nest 13, a sixth through hole is formed in a side wall of the housing, a seventh through hole is formed in a bottom wall of the housing, one end of the pull rope 32 is fixed at one end of the middle rod 10 far away from the upper nest 13, the other end of the pull rope 32 passes through the middle rod 10, extends into the housing of the upper nest 13 and the motor 37 through the fifth through hole of the housing and the seventh through hole of the motor 37, extends out of the motor 37 and the upper nest 13 through the sixth through hole of the motor 37 and the fifth through hole of the housing of the upper nest 13, bypasses the fixed pulley 33, and is then fixed at the upper nest 13.

In the technical scheme of the invention, the first gear 315 is sleeved on the connecting rod 314 of the pulley 31, so that the first gear 315 is connected with the pulley 31, the first gear 315 is meshed with the worm 34, and the worm 34 is connected with the motor 37, so that when the motor 37 drives the worm 34 to rotate forward or reversely, the pulley 31 can be driven to rotate forward or reversely, and the lower nest 11 is driven to move along the direction approaching or separating from the upper nest 13 by the pull rope 32 and the fixed pulley 33, so that the umbrella 100 is unfolded or folded.

The opening and closing structure 30 further comprises a second gear 35, and a gearbox (not shown) connected to the motor 37, the second gear 35 being connected to the worm 34, the gearbox comprising a third gear, the second gear 35 being in mesh with the third gear.

It will be appreciated that the second gear 35 is disposed perpendicular to the worm 34.

It will be appreciated that the gearbox may adjust the rotational speed of the second gear 35, and thus the movement speed of the worm 34, the first gear 315, the pulley 31, the fixed pulley 33, the pull rope 32 and the lower nest 11, and thus the speed of opening or closing the umbrella.

In the technical scheme of the invention, the second gear 35 is connected with the worm 34, and the second gear 35 is meshed with a third gear of the gearbox, so that the gearbox can adjust the rotation speed of the second gear 35 through the meshing relationship between the second gear 35 and the third gear. The gearbox is connected to the motor 37 such that the motor 37 can adjust the rotational speed of the third gear, the second gear 35, through the gearbox.

The present invention also provides a cane 10.

The middle bar 10 includes an upper nest 13, a lower nest 11, and the opening and closing structure 30.

Since the middle rod 10 adopts all the technical solutions of all the embodiments, at least the beneficial effects of the technical solutions of the embodiments are provided, and will not be described in detail herein.

The center bar 10 further includes a handle 15, the handle 15 being disposed at an end of the center bar 10 remote from the upper nest 13, the lower nest 11 being disposed between the upper nest 13 and the handle 15.

In the technical solution of the present invention, the middle rod 10 further includes a handle 15, so as to be convenient for a user to hold.

The middle rod 10 further comprises a control assembly 50, the control assembly 50 comprises a button 51 arranged on the handle 15, a circuit board 52, a switch 53 and a power-off assembly 55 which are all arranged in the handle 15, the switch 53 and the power-off assembly 55 are all electrically connected with the circuit board 52, and the button 51 can be contacted with the switch 53.

In one embodiment of the present invention, the buttons 51 include an umbrella opening button 511 and an umbrella closing button 513.

The umbrella opening button 511 and the umbrella closing button 513 are both arranged at one end of the handle 15 close to the upper nest 13, and the umbrella opening button 511 is arranged between the umbrella closing button 513 and the lower nest 11.

It will be appreciated that the umbrella retracting button 511 and the umbrella opening button 513 may be provided in other regions of the handle 15.

It can be appreciated that the power-off assembly 55 has a load protection function, so as to prevent the umbrella 100 from being blocked. The power-off component 55 may be a conventional integrated block, and the present invention is not described herein.

In the technical scheme of the invention, the umbrella opening button 511 is pressed down to touch the umbrella opening switch 531, so that a circuit is connected, the motor 37 rotates positively to drive the worm 34, the first gear 315, the pulley 31, the fixed pulley 33 and the pull rope 32 to move, and the lower nest 11 moves on the middle rod 10 in the direction approaching to the upper nest 13, so that the purpose of opening the umbrella is achieved; the umbrella folding button 513 is pressed to touch the umbrella folding switch 533, so as to turn on a circuit, so that the motor 37 is reversed to drive the worm 34, the first gear 315, the pulley 31, the fixed pulley 33 and the pull rope 32 to move, and the lower nest 11 moves on the middle rod 10 in a direction away from the upper nest 13, thereby achieving the purpose of folding the umbrella.

The control assembly 50 further comprises a battery 57, two terminals 58 arranged on the circuit board 52, and a spring-type electric wire 56, wherein one end of the spring-type electric wire 56 passes through the middle rod 10 to be connected with the motor 37, the other end of the spring-type electric wire 56 is connected with one terminal 58, and the battery 57 is connected with the other terminal 58.

Preferably, the battery 57 is a rechargeable battery, and the rechargeable battery can be reused, so that the battery is more economical and environment-friendly.

It will be appreciated that the spring type wire 56 has a spring-like structure so that the spring type wire 56 is not damaged during the process of folding and unfolding the umbrella, thereby improving the service life of the wire.

In the technical solution of the present invention, the circuit board 52 is provided with two terminals 58, one terminal 58 is connected with the battery 57, the other terminal 58 is connected with one end of the spring type electric wire 56, and the other end of the spring type battery 58 passes through the middle rod 10 to be connected with the motor 37, thereby forming a complete circuit. The battery 57 may be connected to the motor 37 via the circuit board 52, terminals 58 and spring wires 56 to power the forward and reverse rotation of the motor 37.

The control assembly 50 further includes a charging interface 59 disposed on the circuit board 52, the charging interface 59 for charging the battery 57.

It will be appreciated that the battery 57 may be charged through the charging interface 59 for convenient use by a user.

The middle rod 10 comprises an outer tube 17, at least one middle tube 18 and an inner tube 19, the at least one middle tube 18 and the outer tube 17 are sequentially and slidably sleeved from inside to outside, the handle 15 is fixed at one end of the inner tube 19, the lower nest 11 is slidably sleeved on the peripheral wall of the outer tube 17, and the upper nest 13 is arranged at one end, far away from the handle 15, of the outer tube 17.

It will be appreciated that the middle tube 18 is slidably received in the outer tube 17 and the inner tube 19 is slidably received in the middle tube 18, such that the umbrella 100 has a collapsible function for convenient carrying and use by a user.

A spring 16 is also provided in the middle rod 10. The spring 16 is accommodated in an inner tube 19. One end of the spring 16 is arranged at the top end of the outer tube 17, and the other end of the spring 16 extends into the handle 15.

It will be appreciated that the spring wire 56 and a portion of the draw cord 32 extend through the spring 16.

In an embodiment of the present invention, the handle 15 is fixed to an end of the inner tube 19 away from the upper nest 13, the lower nest 11 is slidably sleeved on the outer peripheral wall of the outer tube 17, the upper nest 13 is fixed to an end of the outer tube 17 away from the handle 15, when the umbrella opening button 511 is pressed, the outer tube 17, at least one middle tube 18 and the inner tube 19 are stretched by the elastic force of the spring 16 in the middle rod 10, and the lower nest 11 slides along the outer peripheral wall of the outer tube 17 under the driving of the pull rope 32 to abut against the upper nest 13, so as to complete the movement of opening the umbrella.

The invention also provides an umbrella 100.

The umbrella 100 includes the center stick 10.

Since the umbrella 100 adopts all the technical solutions of all the embodiments, at least the technical solutions of the embodiments have all the beneficial effects brought by the technical solutions of the embodiments, and are not described in detail herein.

The umbrella 100 further comprises an umbrella rib assembly 70, the umbrella rib assembly 70 comprises a first umbrella rib 71, a second umbrella rib 72 and a tension spring 73, one end of the first umbrella rib 71 is connected with the upper nest 13, one end of the second umbrella rib 72 is connected with the lower nest 11, the other end of the second umbrella rib 72 is slidably connected with the first umbrella rib 71, and two ends of the tension spring 73 are respectively connected with the first umbrella rib 71 and the second umbrella rib 72.

Preferably, the first rib 71 is a multi-folded first rib 71, so that the umbrella 100 is a foldable multi-folded umbrella, which is smaller in size, more attractive in appearance, and more convenient for a user to carry and use.

In the technical scheme of the invention, one end of the first rib 71 is connected to the upper nest 13, one end of the second rib 72 is connected to the lower nest 11, the other end of the second rib 72 is slidably connected to the first rib 71, and two ends of the tension spring 73 are respectively connected to the first rib 71 and the second rib 72. When the umbrella retracting button 513 is pressed, the pull cord 32 pulls the end of the middle rod 10 away from the upper nest 13, that is, the inner tube 19 and the middle tube 18 are moved in a direction approaching to the upper nest 13, so that the inner tube 19, the middle tube 18 and the outer tube 17 are sleeved in sequence from inside to outside, and simultaneously, the lower nest 11 can retract the first umbrella rib 71 and the second umbrella rib 72 inwards by means of the tension spring 73, so that the lower nest 11 moves towards the handle 15, thereby achieving the purpose of retracting an umbrella.

The foregoing description of the preferred embodiments of the present invention should not be construed as limiting the scope of the invention, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).

Claims (11)

1. The opening and closing structure is used for opening or folding an umbrella and comprises a middle rod, an upper nest arranged at one end of the middle rod and a lower nest slidably sleeved at the other end of the middle rod, and is characterized by comprising a pulley arranged in the upper nest, a pull rope and a fixed pulley arranged in the lower nest, wherein one end of the pull rope is arranged at one end of the middle rod far away from the upper nest, the other end of the pull rope penetrates through the middle rod and sequentially bypasses the pulley and the fixed pulley and is fixed on the upper nest, the pulley is provided with a containing groove around the circumferential direction, at least one groove wall of the containing groove is obliquely arranged, so that the containing groove is gradually expanded along the direction from the bottom wall of the containing groove to the opening of the containing groove, at least one protrusion is convexly arranged on at least one groove wall of the containing groove, the extending direction of the protrusion is consistent with the oblique direction of the groove wall, and the diameter of the protrusion is gradually reduced along the direction from the bottom wall of the containing groove to the opening of the containing groove; or, the extending direction of the bulge is perpendicular to the inclined direction of the groove wall, and the vertical distance between the bulge and the groove wall is smaller than the diameter of the pull rope; the included angle between the inclined direction of the groove wall and the horizontal plane is 40-85 degrees.

2. The opening and closing structure according to claim 1, wherein a first through hole is formed in a side wall of the upper nest, a second through hole communicated with the first through hole is formed in a bottom wall of the upper nest, and the other end of the pull rope penetrates through the middle rod and the second through hole, bypasses the pulley, penetrates out of the upper nest through the first through hole, and is fixed to the upper nest after bypassing the fixed pulley.

3. The opening and closing structure according to claim 1 or 2, further comprising a first gear, a worm meshed with the first gear, and a motor, wherein the first gear is sleeved on the connecting rod of the pulley, and the motor is connected with the worm.

4. A shutter arrangement as claimed in claim 3, further comprising a second gear, the second gear being connected to the worm, and a gearbox connected to the motor, the gearbox comprising a third gear, the second gear and the third gear being meshed.

5. The opening and closing structure of claim 1, wherein the middle bar further comprises a handle disposed at an end of the middle bar remote from the upper nest, and the lower nest is disposed between the upper nest and the handle.

6. The opening and closing structure of claim 5, wherein the middle bar further comprises a control assembly, the control assembly comprises a button arranged on the handle, a circuit board, a switch and a power-off assembly all arranged in the handle, the switch and the power-off assembly are electrically connected with the circuit board, and the button can be contacted with the switch.

7. The opening and closing structure according to claim 6, wherein the control assembly further comprises a battery, two terminals provided on the circuit board, and a spring wire, one end of the spring wire passes through the middle rod to be connected with the motor, the other end of the spring wire is connected with one terminal, and the battery is connected with the other terminal.

8. The opening and closing structure of claim 7, wherein the control assembly further comprises a charging interface provided on the circuit board, the charging interface being for charging the battery.

9. The opening and closing structure according to claim 5, wherein the middle rod comprises an outer tube, at least one middle tube and an inner tube, the at least one middle tube and the outer tube are sequentially and slidably sleeved from inside to outside, the handle is fixed at one end of the inner tube, the lower nest is slidably sleeved on the peripheral wall of the outer tube, and the upper nest is arranged at one end of the outer tube far away from the handle.

10. An umbrella comprising an opening and closing structure according to any one of claims 1 to 9.

11. The umbrella of claim 10, further comprising a rib assembly comprising a first rib, a second rib, and a tension spring, wherein one end of the first rib is connected to the upper nest, one end of the second rib is connected to the lower nest, the other end of the second rib is slidably connected to the first rib, and two ends of the tension spring are connected to the first rib and the second rib, respectively.