CN213344600U

CN213344600U - Umbrella with adjustable shielding area

Info

Publication number: CN213344600U
Application number: CN202022821044.4U
Authority: CN
Inventors: 肖光明
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-06-04
Anticipated expiration: 2030-11-30

Abstract

The utility model discloses an umbrella with adjustable shielding area, which comprises an umbrella handle, umbrella ribs and an umbrella fabric, wherein the umbrella ribs are arranged on the umbrella handle, the umbrella fabric is arranged on the umbrella ribs, the top end of the umbrella handle is provided with a fixed seat, the umbrella handle is provided with a sliding seat in a sliding fit manner, the sliding seat is provided with a spring fastener, the umbrella handle is provided with a locking hole matched with the spring fastener at the position close to the fixed seat, the umbrella ribs comprise a plurality of telescopic units which are uniformly distributed along the circumferential direction of the umbrella handle, each telescopic unit is radially arranged at the circumferential side of the umbrella handle and can be close to or far away from the direction of the umbrella handle, each telescopic unit comprises at least two telescopic joints which are connected in sequence, and each telescopic joint comprises an upper connecting rod and a lower connecting rod which are hinged; the umbrella face is made for elasticity waterproof cloth, locking hole has seted up a plurality ofly along umbrella stick length direction interval. The utility model discloses can come the corresponding area size of strutting of selecting the umbrella face according to actual need, application range is wider.

Description

Umbrella with adjustable shielding area

Technical Field

The utility model relates to an umbrella technical field, concretely relates to adjustable umbrella that shelters from area.

Background

The umbrella is an indispensable daily use article in people's life, and it not only can keep out the wind and rain, but also can the sunshade. Along with the rapid development of science and technology, the variety of umbrellas is also increasing, including folding umbrellas, automatic umbrellas, wooden umbrellas, and oiled paper umbrellas. However, the area of the umbrella cover of these umbrellas is fixed and unchangeable, when in rainy and snowy weather, especially when sudden rainstorm comes in summer, many people go out and do not take the umbrella, and need share one umbrella with other people, and at this moment, because the umbrella cover area of the umbrella is limited, only one person can be accommodated, and another person who is located with the umbrella can be drenched more or less, and the umbrella is unchangeable to the user, and in order to improve the convenience degree of people to the umbrella, the umbrella with the adjustable shielding area needs to be designed.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: the umbrella with the adjustable shielding area can correspondingly adjust the size of the opening area of the umbrella cover according to actual needs, and is wider in application range.

In order to solve the technical problem, the utility model discloses a following technical scheme:

an umbrella with an adjustable shielding area comprises an umbrella handle, umbrella ribs and an umbrella fabric, wherein the umbrella ribs are arranged on the umbrella handle, the umbrella fabric is arranged on the umbrella ribs, a fixed seat is arranged at the top end of the umbrella handle, a sliding seat is matched on the umbrella handle in a sliding mode, a spring buckle is arranged on the sliding seat, a locking hole matched with the spring buckle is formed in the position, close to the fixed seat, of the umbrella handle, so that the sliding of the sliding seat is limited through the matching of the locking hole and the spring buckle, the umbrella ribs comprise a plurality of telescopic units which are uniformly distributed along the circumferential direction of the umbrella handle, and each telescopic unit is radially arranged on the circumferential side of the umbrella handle and can be close to or far away from the direction; each telescopic unit comprises at least two telescopic joints which are sequentially connected, each telescopic joint comprises an upper connecting rod and a lower connecting rod, the middle parts of the upper connecting rod and the lower connecting rod are mutually hinged, and adjacent telescopic joints are mutually hinged with the corresponding lower connecting rods through the upper connecting rods; the telescopic joint close to the umbrella handle in each telescopic unit is hinged with the fixed seat through the upper end of the corresponding upper connecting rod and is hinged with the sliding seat through the lower end of the corresponding lower connecting rod, and the telescopic joint close to the outer side of the umbrella cover in each telescopic unit is fixedly connected with the outer side of the umbrella cover through the upper end of the corresponding lower connecting rod so as to drive the telescopic unit to extend through the sliding of the sliding seat towards the direction of the fixed seat, so that the opening of the umbrella cover is realized; the umbrella cover is made of elastic waterproof cloth, a plurality of locking holes are formed in the umbrella handle at intervals along the length direction of the umbrella handle, and the size of the opening area of the umbrella cover is adjusted through the combination of the sliding seat and the corresponding locking holes; when the sliding seat slides to the lowest locking hole, the umbrella cover is in a fully-unfolded state.

The utility model provides an umbrella does not only confine to the umbrella, and sun umbrella is also suitable for equally, adopts conventional umbrella stick and sliding seat, and the snak link is the spring button formula switch commonly used on the market, and the snak link cooperatees with the locking hole, realizes the spacing of sliding seat to accomplish the fixed of umbrella area of strutting. Importantly, carry out the special design to umbrella face and rib in this scheme, it is different with the rib structure of conventional umbrella, through being provided with a plurality of telescoping units in umbrella stick week side, at first the telescoping unit still can support the demand that satisfies the rib to the umbrella face, and every telescoping unit all radially sets up in umbrella stick week side and can be close to or keep away from to the umbrella stick direction, make the umbrella face improve the waterproof material who has high elasticity simultaneously, make the umbrella face have certain flexible deformability, then slide through the sliding seat, drive the radial direction of telescoping unit along the umbrella stick and outwards extend, thereby realize the adjustment of umbrella face distraction area.

The telescopic unit is formed by combining and splicing a plurality of continuous telescopic joints, the number of the telescopic joints is related to the specific sizes of the upper connecting rod and the lower connecting rod, the number of the telescopic joints also needs to be two to three, the volume of the folded umbrella can meet the use requirement, and the more the number of the telescopic joints, the larger the volume of the folded umbrella. The telescopic joint in this scheme is similar to the motion principle of four connecting rods in plane, can make the umbrella face realize flexible, and the telescopic joint that is close to umbrella stick position department is articulated through upper connecting rod upper end and fixing base, and the lower extreme of lower connecting rod is articulated with the sliding seat, consequently slides along the axial direction of umbrella stick through the sliding seat to the angle between drive upper connecting rod and lower connecting rod changes. When the sliding seat slides downwards along the umbrella handle, the angle formed by the upper connecting rod and the lower connecting rod is increased due to the fixed position of the fixed seat, so that each expansion joint is driven to contract, and the reduction of the area of the umbrella cover and the folding of the umbrella are finished; when the sliding seat slides towards the fixed seat along the umbrella handle, the intersection angle of the upper connecting rod and the lower connecting rod is reduced, and the length of each section of expansion joint is increased, so that the umbrella cover is driven to extend towards the outer side, and the opening area of the umbrella cover is increased. Therefore, the action mechanism of the plane four-bar linkage is applied to the umbrella ribs of the umbrella, so that the umbrella cover of the umbrella can stretch, and the application range is wider.

The umbrella cover in the fully-stretched state is required to be particularly described, the umbrella cover in the fully-stretched state actually means that the umbrella cover is completely stretched, and the umbrella cover is partially deformed, so that the normal use function of the umbrella is ensured, only the deformation degree of the umbrella cover is not large, along with the fact that the sliding seat continues to approach the fixing seat, the outer side of the telescopic unit continues to extend outwards, so that the telescopic unit drives the umbrella cover to continue to stretch and deform towards the outer side, the deformation amount is larger and larger, and the stretching area of the umbrella cover is correspondingly increased. Through setting up a plurality of locking holes, the sliding seat cooperates with the locking hole that is closer to the fixing base more, and the area of strutting of umbrella face is just bigger. The number of the locking holes can be selected according to actual needs, and the more the number of the locking holes is, the more the gears with adjustable corresponding umbrella surface area size are. In daily use, the size of the opening area of the umbrella cover can be adjusted according to actual needs, the sliding seat only needs to slide to the corresponding locking hole in the adjusting process, the corresponding opening area of the umbrella can be selected, the selection is more flexible, and the use is also very convenient.

Preferably, the lower end of the upper connecting rod in the telescopic unit, which is close to the outer side of the umbrella cover, is shortened to be hinged with the middle position of the corresponding lower connecting rod.

Like this, because the lower extreme that is close to the upper connecting rod in the telescopic joint outside the umbrella face need not be connected with the umbrella face, consequently shorten the design to the lower extreme of this upper connecting rod, only need with the lower extreme of upper connecting rod with the middle part position of the lower connecting rod of this department articulated alright, avoid the lower extreme slant of upper connecting rod to stretch out one section distance down like this, influence the normal use of its umbrella.

Preferably, the adjacent telescopic joints form an upper connecting end and a lower connecting end through the end parts of the upper connecting rod and the corresponding lower connecting rod which are mutually hinged, and the connecting end close to the inner surface of the umbrella cover is fixedly connected with the inner surface of the umbrella cover.

Like this, be close to between the telescopic joint and realize fixed connection through the suture between the link of umbrella face internal surface and the umbrella face internal surface, at the in-process of opening of umbrella, the upper portion link between the adjacent telescopic joint drives the umbrella face through the link and takes place tensile and shrink with umbrella face fixed connection back, and the whole support nature of umbrella is better, also more does benefit to opening and folding up of umbrella in addition.

Preferably, an elastic stay wire is connected between the hinged end position of the upper connecting rod and the lower connecting rod in each telescopic joint and the inner surface of the umbrella cover.

Like this, act as go-between through setting up elasticity, the length that elasticity was acted as go-between can set up according to actual choice needs, elasticity is acted as go-between and is compared in conventional act as go-between, and elasticity is acted as go-between more difficult winding together, can not appear influencing the normal use of umbrella because of acting as go-between winding, like this when folding up the umbrella, can utilize the reset effect that elasticity was acted as go-between, evenly folds the umbrella face of umbrella along the fold seal of umbrella face, the folding up of the umbrella of being convenient for more.

Preferably, the number of the telescopic units in the umbrella ribs is at least 5, and the telescopic units are uniformly distributed on the peripheral side of the umbrella handle.

Like this, in order to guarantee the supporting role to the umbrella face, the telescopic unit in the rib should design for more than 5, more can guarantee like this to provide sufficient supporting role to the umbrella face, avoids the umbrella to receive strong wind oppression and the phenomenon that the damage appears in the use. The existing umbrella surface is only in one opening state, the stress of the umbrella ribs is only one, and the umbrella ribs of the utility model bear different stresses of the umbrella surface in different opening states, and the umbrella ribs move upwards more, the stress is larger, and the supporting requirement on the umbrella ribs is higher.

Preferably, the umbrella handle comprises an outer pipe and a plurality of sections of inner pipes, the inner pipes penetrate through the outer pipe, spherical protrusions are arranged on the inner pipes, springs are connected between the bottom of the protrusions and the inner wall of the inner pipes, and clamping holes matched with the protrusions are formed in the positions, close to the upper ends, of the outer pipes so that the inner pipes and the outer pipes can be locked in length through the cooperation of the protrusions and the clamping holes.

Like this, with the umbrella stick design for the telescopic multisection formula umbrella stick commonly used on the market, can carry out the multisection equipment with the umbrella stick like this, adopt the three section in this scheme, the volume after the umbrella is folded up is less like this, is more convenient for accomodate.

To sum up, the beneficial effects of the utility model reside in that: the utility model discloses in through being provided with a plurality of flexible units in umbrella stick week side, at first flexible unit still can support the demand that satisfies the rib to the umbrella face, and every flexible unit all radially sets up in the week side of umbrella stick and can be close to or keep away from to the umbrella stick direction, improve the umbrella face for the waterproof cloth that has high elasticity simultaneously and make, make the umbrella face have certain flexible deformability, then slide through the sliding seat, drive the outside extension of the radial direction of flexible unit along the umbrella stick and extend to realize the adjustment of umbrella face distraction area. In daily use, the size of the opening area of the umbrella cover can be adjusted according to actual needs, the sliding seat only needs to slide to the corresponding locking hole in the adjusting process, the corresponding opening area of the umbrella can be selected, the selection is more flexible, and the use is also very convenient.

Drawings

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a front view of fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Reference numerals in the drawings of the specification include: the umbrella comprises an umbrella handle 1, umbrella ribs 2, an umbrella cover 3, a fixed seat 4, a sliding seat 5, a locking hole 6, a telescopic unit 7, an upper connecting rod 8, a lower connecting rod 9, an elastic pull wire 10, an outer tube 11 and an inner tube 12.

An umbrella capable of adjusting the shading area is shown in figures 1 and 2 and comprises an umbrella handle 1, umbrella ribs 2 and an umbrella cover 3, wherein the umbrella cover 3 is not shown in figure 1. The umbrella rib 2 is arranged on the umbrella handle 1, the umbrella cover 3 is arranged on the umbrella rib 2, the top end of the umbrella handle 1 is provided with a fixed seat 4, the umbrella handle 1 is slidably matched with a sliding seat 5, the sliding seat 5 is provided with a spring buckle, the position of the umbrella handle 1, which is close to the fixed seat 4, is provided with a locking hole 6 matched with the spring buckle so as to limit the sliding of the sliding seat 5 through the matching of the locking hole 6 and the spring buckle, the umbrella rib 2 comprises a plurality of telescopic units 7 which are uniformly distributed along the circumferential direction of the umbrella handle 1, and each telescopic unit 7 is radially arranged on the circumferential side of the umbrella handle and can be close to or far away from the umbrella handle; each telescopic unit comprises at least two telescopic joints which are sequentially connected, each telescopic joint comprises an upper connecting rod 8 and a lower connecting rod 9, the middle parts of the upper connecting rod 8 and the lower connecting rod 9 are mutually hinged, and the connecting ends between the adjacent telescopic joints are mutually hinged with the corresponding lower connecting rods 9 through the upper connecting rods 8; the telescopic joint close to the umbrella handle in each telescopic unit is hinged with the fixed seat 4 through the upper end of the corresponding upper connecting rod 8 and is hinged with the sliding seat 5 through the lower end of the corresponding lower connecting rod 9, and the telescopic joint close to the outer side of the umbrella cover 3 in each telescopic unit is fixedly connected with the outer side of the umbrella cover 3 through the upper end of the corresponding lower connecting rod 9 so as to drive the telescopic unit 7 to extend through the sliding of the sliding seat 5 towards the fixed seat 4, so that the opening of the umbrella cover 3 is realized; the umbrella cover 3 is made of elastic waterproof materials, a plurality of locking holes 6 are formed in the position, close to the fixed seat 4, of the umbrella handle 1 at intervals along the length direction of the umbrella handle 1, and the size of the opening area of the umbrella cover 3 is adjusted through the combination of the sliding seat 5 and the corresponding locking holes 6; when the sliding seat 5 slides to the lowest locking hole 6, the umbrella cover 3 is in a fully expanded state.

The utility model provides an umbrella does not only confine to the umbrella, and sun umbrella is also suitable for equally, adopts conventional umbrella stick 1 and sliding seat 5, and the snak link is the spring button formula switch commonly used on the market, and the snak link cooperatees with locking hole 6, realizes sliding seat 5 spacing to accomplish the umbrella and strut the fixed of area. Importantly, carry out the special design to umbrella face 3 and rib 2 in this scheme, it is different with the 2 structures of rib of conventional umbrella, through being provided with a plurality of telescoping units 7 in umbrella stick week side, at first telescoping unit 7 still can support umbrella face 3, satisfy its rib 2's demand, and every telescoping unit 7 all radially sets up in umbrella stick week side and can be close to or keep away from to the umbrella stick direction, improve umbrella face 3 simultaneously and make for the tarpaulin that has the high elasticity, make umbrella face 3 have certain flexible deformability, then slide through sliding seat 5, drive the radial direction of telescoping unit along umbrella stick 1 and outwards extend the extension, thereby realize the adjustment of umbrella face 3 spreading area.

The telescopic unit 7 is formed by combining and splicing a plurality of continuous telescopic joints, the number of the telescopic joints is related to the specific sizes of the upper connecting rod 8 and the lower connecting rod 9, the number of the telescopic joints is two to three, and the size of the folded umbrella can meet the use requirement, and the more the number of the telescopic joints, the larger the size of the folded umbrella. The telescopic joint in this scheme is similar to the motion principle of four connecting rods in plane, can make umbrella face 3 realize flexible, and the telescopic joint that is close to umbrella stick position department is articulated with fixing base 4 through 8 upper ends of upper connecting rods, and the lower extreme of lower connecting rod 9 is articulated with sliding seat 5, consequently slides along the axial direction of umbrella stick through sliding seat 5 to the angle that drives between upper connecting rod 8 and lower connecting rod 9 changes. When the sliding seat 5 slides downwards along the umbrella handle, the angle formed by the upper connecting rod 8 and the lower connecting rod 9 is increased due to the fixed position of the fixed seat 4, so that each telescopic joint is driven to contract, and the reduction of the area of the umbrella cover 3 and the folding of the umbrella are finished; when the sliding seat 5 slides towards the fixed seat 4 along the umbrella handle, the intersection angle of the upper connecting rod 8 and the lower connecting rod 9 is reduced, and the length of each expansion joint is increased, so that the umbrella cover 3 is driven to extend towards the outer side, and the expansion area of the umbrella cover 3 is increased. Therefore, the action mechanism of the plane four-bar linkage is applied to the umbrella ribs 2 of the umbrella, so that the umbrella cover 3 of the umbrella can stretch and contract, and the application range is wider.

The umbrella cover in the fully-stretched state is required to be particularly described, the umbrella cover in the fully-stretched state actually means that the umbrella cover is completely stretched, and the umbrella cover is partially deformed, so that the normal use function of the umbrella is ensured, only the deformation degree of the umbrella cover is not large, along with the fact that the sliding seat continues to approach the fixing seat, the outer side of the telescopic unit continues to extend outwards, so that the telescopic unit drives the umbrella cover to continue to stretch and deform towards the outer side, the deformation amount is larger and larger, and the stretching area of the umbrella cover is correspondingly increased. Through setting up a plurality of locking holes 6, sliding seat 5 cooperates with locking hole 6 that is closer to fixing base 4, and the area that struts of umbrella face 3 just is big more. The number of the locking holes 6 can be selected according to actual needs, and the more the number of the locking holes 6 is, the more the gears with adjustable area of the corresponding umbrella cover 3 are. In daily use, the opening area of the umbrella cover 3 can be adjusted according to actual needs, and the corresponding opening area of the umbrella can be selected only by sliding the sliding seat 5 to the corresponding locking hole 6 in the adjusting process, so that the selection is more flexible, and the use is also very convenient.

In the specific embodiment, the lower end of the upper connecting rod 8 close to the outer side of the umbrella cover 3 in the telescopic unit is shortened to be hinged with the middle position of the corresponding lower connecting rod 9.

Like this, because the lower extreme that is close to the upper connecting rod 8 in the telescopic joint of 3 outsides on umbrella face need not be connected with the umbrella face, consequently shorten the design to this upper connecting rod 8's lower extreme, only need with the lower extreme of upper connecting rod 8 with the middle part position of the lower connecting rod 9 of this department articulated alright, avoid the lower extreme slant of upper connecting rod 8 to stretch out a section distance down like this, influence the normal use of its umbrella.

In a specific embodiment, the end parts of the adjacent telescopic joints hinged with the corresponding lower connecting rod through the upper connecting rod form an upper connecting end and a lower connecting end, and the connecting end close to the inner surface of the umbrella cover 3 is fixedly connected with the inner surface of the umbrella cover 3.

Like this, be close to between the telescopic joint and realize fixed connection through the suture between the link of umbrella face internal surface and the umbrella face internal surface, at the in-process of strutting of umbrella, the upper portion link between the adjacent telescopic joint drives umbrella face 3 through the link and takes place tensile and shrink with 3 fixed connection backs of umbrella face, and the whole support nature of umbrella is better, also more does benefit to opening and folding up of umbrella in addition.

In the specific embodiment, an elastic pull wire 10 is connected between the inner surface of the umbrella cover 3 and the position of the hinged end of the upper connecting rod 8 and the lower connecting rod 9 in each telescopic joint.

Like this, act as go-between through setting up elasticity, elasticity is acted as go-between 10 the length can be set up according to actual choice needs, acts as go-between when elasticity compare in conventional act as go-between, elasticity is acted as go-between more difficult winding together, can not appear influencing the normal use of umbrella because of acting as go-between winding, like this when folding up the umbrella, can utilize elasticity to act as go-between 10 reset effect, evenly folds the umbrella face 3 of umbrella along the fold seal of umbrella face 3, the folding up of the umbrella of being convenient for more.

In the specific embodiment, the number of the telescopic units in the umbrella frame 2 is at least 5, and the telescopic units are uniformly distributed on the periphery of the umbrella handle.

Like this, in order to guarantee the supporting role to umbrella face 3, the telescopic unit in rib 2 should design for more than 5, more can guarantee like this to provide sufficient supporting role to umbrella face 3, avoids the umbrella to receive strong wind oppression and the phenomenon that appears damaging in the use. The existing umbrella surface is only in one opening state, the stress of the umbrella ribs is only one, and the umbrella ribs of the utility model bear different stresses of the umbrella surface in different opening states, and the umbrella ribs move upwards more, the stress is larger, and the supporting requirement on the umbrella ribs is higher.

In the specific implementation process, the umbrella stick 1 includes outer tube 11 and inner tube 12, the inner tube 12 is worn to locate in the outer tube 11, be equipped with spherical protrusion on the inner tube 12, just be connected with the spring between bellied bottom and the inner wall of inner tube 12, the outer tube 11 is close to upper end position department and is equipped with the card hole with protruding matched with to realize the length locking of inner tube 12 and outer tube 11 through protruding and card hole cooperation.

Like this, with umbrella stick 1 design for the telescopic umbrella stick 1 commonly used on the market, can carry out the multisection equipment with umbrella stick 1 like this, adopt the three section in this scheme, the volume after the umbrella is folded up is less like this, is more convenient for accomodate.

When the umbrella is unfolded, the inner pipe and the outer pipe of the umbrella handle are stretched and locked, then the sliding seat on the outer pipe at the uppermost section of the umbrella handle slides towards the fixed seat, so that the telescopic unit is driven to stretch outwards, the umbrella cover is unfolded, then the sliding seat slides to the corresponding locking hole according to actual needs, and then the sliding seat is fixed, so that the unfolding of the umbrella is completed. When the umbrella is folded, the sliding seat slides downwards and slides to the lower end of the uppermost outer tube of the umbrella handle, the angle formed by the upper connecting rod and the lower connecting rod of the telescopic unit approaches to 180 degrees, the umbrella cover of the umbrella is folded under the contraction action of the telescopic unit, the umbrella cover of the umbrella can be uniformly folded along the wrinkle marks of the umbrella cover by utilizing the resetting action of the elastic stay wires through the arrangement of the elastic stay wires, and the volume of the folded umbrella is smaller. Then the umbrella handle is shortened in sequence, and the folding of the umbrella is completed.

Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, while the invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides an adjustable umbrella that shelters from area, includes umbrella stick (1), rib (2) and umbrella face (3), rib (2) are installed on umbrella stick (1), install on rib (2) umbrella face (3), umbrella stick (1) top is equipped with fixing base (4), sliding fit has a sliding seat (5) on umbrella stick (1), be equipped with the snak link on sliding seat (5), umbrella stick (1) are gone up and are equipped with and detain matched with locking hole (6) with snak link cooperation in neighbouring fixing base (4) position department to restrict sliding seat (5) through locking hole (6) and snak link cooperation and slide its characterized in that: the umbrella ribs (2) comprise a plurality of telescopic units (7) which are uniformly distributed along the circumferential direction of the umbrella handle (1), and each telescopic unit (7) is radially arranged on the circumferential side of the umbrella handle (1) and can be close to or far away from the umbrella handle (1); each telescopic unit (7) comprises at least two telescopic joints which are sequentially connected, each telescopic joint comprises an upper connecting rod (8) and a lower connecting rod (9) which are hinged with each other at the middle position, and adjacent telescopic joints are hinged with the corresponding lower connecting rods (9) through the upper connecting rods (8); the telescopic joint at the position, close to the umbrella handle (1), in each telescopic unit (7) is hinged with the fixed seat (4) through the upper end of the corresponding upper connecting rod (8) and is hinged with the sliding seat (5) through the lower end of the corresponding lower connecting rod (9), the telescopic joint, close to the outer side of the umbrella cover (3), in each telescopic unit (7) is fixedly connected with the outer side of the umbrella cover (3) through the upper end of the corresponding lower connecting rod (9), so that the telescopic unit (7) is driven to extend by the sliding seat (5) to slide towards the direction of the fixed seat (4), and the umbrella cover (3) is opened; the umbrella cover (3) is made of elastic waterproof materials, a plurality of locking holes (6) are formed in the length direction of the umbrella handle (1) at intervals, and the size of the opening area of the umbrella cover (3) is adjusted by combining the sliding seat (5) with the corresponding locking hole (6); when the sliding seat (5) slides to the lowest locking hole (6), the umbrella cover (3) is in a fully expanded state.

2. The umbrella of claim 1, wherein: the lower end of an upper connecting rod (8) in the telescopic unit (7) close to the outer side of the umbrella cover (3) is shortened to be hinged with the middle position of a corresponding lower connecting rod (9).

3. The umbrella of claim 2, wherein: the end parts of the adjacent telescopic joints which are mutually hinged through the upper connecting rod (8) and the corresponding lower connecting rod (9) form an upper connecting end and a lower connecting end, and the connecting end close to the inner surface of the umbrella cover (3) is fixedly connected with the inner surface of the umbrella cover (3).

4. The umbrella of claim 3, wherein: an elastic stay (10) is connected between the hinged end position of the upper connecting rod (8) and the lower connecting rod (9) in each telescopic joint and the inner surface of the umbrella cover (3).

5. An umbrella with adjustable shelter area as claimed in any one of claims 1 to 4, wherein: the number of the telescopic units (7) in the umbrella ribs (2) is at least 5, and the telescopic units are uniformly distributed on the peripheral side of the umbrella handle (1).