A kind of inflatable umbrella
Technical field
The invention belongs to umbrella fields, and in particular to a kind of inflatable umbrella.
Background technology
Document number is that the Chinese patent of CN2386679Y discloses a kind of inflatable, pumping gasbag frame umbrella, main
Purpose is to solve:When winding umbrella cover after inflatable umbrella use, a small amount of air of residual leads to winding difficulty is increased to ask in gasbag frame
Topic.In the program, the air storage bag lower end of lower end connects intake valve, air bleeding valve, is arranged by bouncing plate, rubber on compound air-control head
The relief valve of the compositions such as piece, lid, valve inside;Upon inflation, the gas outlet on valve inside and it is nested with the rubber outside gas outlet
Casing constitutes a check valve, and the intake valve of cooperation air storage bag lower end, when pulling down air storage bag, gas storage intraluminal pressure reduces,
Intake valve is opened(Exhaust valve closure), air enters air storage bag, and when pushing up air storage bag, air is discharged into compound by gas outlet
In air-control head;After inflatable umbrella use, air bleeding valve is opened(Intake valve is closed), push up air storage bag, the air in air storage bag from
Air bleeding valve is discharged, but when pulling down air storage bag, gas outlet on valve inside and the gum sleeve structure being nested with outside gas outlet
At check valve and can not be from being connected to air storage bag direction in compound air-control head, i.e.,:Pressure relief device in compound air-control head is in gas
When the intraskeletal pressure of capsule does not transfinite and it cannot achieve the function of exhaust.
Those skilled in the art are required to two conducting sides it is to be understood that when needing to realize multiple inflation or pumping
It can be realized to opposite check valve, the scheme in above patent document simultaneously cannot achieve its technical problem to be solved,
Those skilled in the art also cannot achieve its scheme according to the record of its specification.
Invention content
The technical problem to be solved by the present invention is to:Inflation is facilitated to put in view of the deficienciess of the prior art, offer is a kind of
The inflatable umbrella of gas.
Purpose to realize the present invention, is achieved using following technical scheme:A kind of inflatable umbrella, including umbrella handle portion, even
The piston portion being connected below umbrella handle portion is rotatably connected on the swivel on umbrella handle portion top, is fixedly connected on swivel upper end
Gas control unit, be fixedly connected on the umbrella stand fixing piece of gas control unit upper end, be arranged outside the umbrella stand fixing piece
The inflated supporting pipe in week, and it is connected to the umbrella cover of inflated supporting pipe upper end.The piston portion is in the cylinder of upper end closed
Shape;The piston portion upper end is fixedly connected with the rubber ring being slidably connected with umbrella handle portion inner wall;Length is installed in the piston portion
The slide push rod of cube shape;The slide push rod lower end forms the push rod pedestal being slidably matched with piston portion lower end;The work
Piston part lower part is equipped with fixed seat;The fixed seat upper surface forms the push rod positioning region being slidably matched with slide push rod;Institute
Fixed seat upper surface is stated to be located at the circumferential position of the push rod positioning region to form the cooperation that is fixedly connected with piston portion lower end solid
Determine portion;The slide push rod side wall, which is located above push rod positioning region, is fixedly connected with stop screw;The slide push rod upper end
Form inclined-plane.The piston portion internal upper part is fixedly connected with cylinder fixed block;The fixed block centre position molding
There is the vertical core a being slidably matched with slide push rod top;The fixed block side diametrically forms cross-drilled hole;In the cross-drilled hole
Slidably connect sliding shoe;The sliding shoe intermediary form has the vertical core b that the inclined-plane with slide push rod upper end is slidably matched;It is described
Sliding shoe forms clamp away from inclined-plane one end;The sliding shoe other end is fixedly connected with spring b.Umbrella handle portion lower side
Wall forms the bayonet with clamp cooperation positioning.The slide push rod upper end is formed on one side with respect to clamp with to avoid vertical core
The limiting plate that b is detached from slide push rod.
Umbrella handle subordinate portion is fixedly connected with guide head;The piston portion side wall along piston portion length direction form with
The guide groove that guide head is slidably connected.The centre position of umbrella handle portion upper surface forms fixing pipe;The fixing pipe upper end
The centre position in face forms the unidirectional valve housing of truncated cone-shaped;It is straight that the unidirectional valve housing lower face diameter is more than fixing pipe
Diameter;Unidirectional valve housing lower face forms locating ring;Symmetrically arranged list there are two being fixedly mounted on the unidirectional valve housing
To valve;The check valve includes the check valve a that umbrella handle portion is connected from inside to outside, and opposite with the conducting direction of check valve a
Check valve b;The symmetric position that umbrella handle portion upper surface is located at the periphery of fixing pipe forms positioning protrusion a and positioning protrusion b.
The swivel lower end is corresponded to has been separately formed positioning port a and positioning positioned at the position of the positioning protrusion a and positioning protrusion b
Mouth b;The swivel is made of two identical halfbodies;Described two halfbodies are bolted to connection;The rotation connects
Head inner wall lower forms spring positioning shoulder;The fixing pipe outer sheath is equipped with spring a;The one end the spring a and locating ring phase
It supports, one end offsets with spring positioning shoulder;The swivel upper inside wall forms mating groove.
Gas control unit lower end forms the outer flange collar being fixedly connected with the mating groove;The outer flange collar and cooperation
Slot is interference fitted;Venthole a and venthole b are formed on the gas control unit;The upper ends the venthole a and umbrella stand fixing piece
Connection, lower end offset with check valve sealing;The upper ends the venthole b extend to the side wall of gas control unit, lower end and check valve
It offsets.The umbrella stand fixing piece side wall circumferentially uniformly forms multiple umbrella stand connectors;Each umbrella stand connector intermediary form
There is gas passage;The inflated supporting pipe is connected to corresponding umbrella stand connector outer end;It is connected on the outside of the inflated supporting pipe
Inflated supporting pipe to be fixedly connected on to the umbrella stand fixing sleeve on umbrella stand connector;The umbrella stand fixation is set in outside umbrella stand connector
Side, and connect with umbrella stand joint screw thread.
Preferably:The inflated supporting pipe is formed by two panels plastic film thermal welding, in being in inflated supporting pipe
Empty air bag, inflated supporting pipe both sides and one end end are welded edge, and inflated supporting pipe other end end is and umbrella stand fixing piece
The open end of connection.Inflated supporting pipe side is also molded there are one magnetic stripe accommodating chamber, be equipped in magnetic stripe accommodating chamber to
The first soft magnetic stripe and the second soft magnetic stripe of folding assisted umbrella cover.
Preferably:Inflated supporting tube opening end inner wall is adhesively fixed with umbrella stand connector outer wall by glue.
The present invention also provides a kind of inflatable umbrella, including umbrella handle portion, the work with the sliding connection of umbrella handle portion inner wall
Piston part, is rotatably connected on the umbrella cover connector on umbrella handle portion top, and be connected on umbrella cover connector and with umbrella cover connector phase
The hollow umbrella cover or multiple inflated supporting pipes of connection;When what is connected on umbrella cover connector is inflated supporting pipe, each inflation
Umbrella cover is connected on support tube;There are two symmetrically arranged check valves for the fixed installation of umbrella handle portion upper end;The check valve packet
Include the check valve a that umbrella handle portion is connected from inside to outside, and the check valve b opposite with the conducting direction of check valve a;The umbrella cover connects
Upper end and umbrella stand fittings are formed on fitting, lower end seals the blow vent a to offset with the check valve;The umbrella handle portion with
The spring a for making check valve be pushed against on the blow vent is connected between umbrella cover connector.
Compared with prior art, the beneficial effects of the invention are as follows:
When user wants to strut umbrella, gas control unit and swivel are pinched with the finger of a hand, use is another
Hand holds umbrella handle portion, pulls down, and spring a is compressed at this time, and positioning protrusion a is detached from positioning port b, positioning protrusion b is detached from positioning
Umbrella handle portion opposing gas control unit is rotated a low-angle, continues rotating parachute shank by mouth a, until positioning protrusion a is caught in positioning
Mouth a, positioning protrusion b are caught in positioning port b, and it is check valve a that venthole a is corresponding at this time, and venthole b corresponding is check valve b.
Then, a hand holds umbrella handle portion, and another hand holds piston portion, and piston portion is done to back and forth reciprocal in an axial direction
Movement, guide head slidably reciprocates in guide groove at this time, when piston portion pulls down, gas from the external world by check valve b with
Venthole b enters from check valve a and venthole a in inflated supporting pipe into umbrella handle portion, until the gas of inflated supporting pipe
When capsule internal gas reaches the limit values, spring a can be compressed, and check valve a is made to be detached from venthole a;Continue to inflate, extra gas
It is leaked out in gap between check valve a and venthole a, air bag can't be made to rupture.
Then, piston portion is pulled down, since spring b is in compressive state at this time, the cross section when clamp and bayonet
When cross section overlaps, under the action of spring b elastic force, clamp pops up outward from bayonet, secures the phase of piston portion and umbrella handle portion
To position.
When user wants to close one's umbrella, gas control unit and swivel are pinched with the finger of a hand, with another hand
Umbrella handle portion is held, is pulled down, most of gas in inflated supporting pipe is discharged in this process;Spring a is compressed at this time,
Positioning protrusion a is detached from positioning port a, positioning protrusion b is detached from positioning port b, and umbrella handle portion opposing gas control unit is rotated a small angle
Degree continues rotating parachute shank, until positioning protrusion a is caught in positioning port b, positioning protrusion b is caught in positioning port a, at this time a pairs of venthole
That answer is check valve b, and venthole b corresponding is check valve a.Then, push rod pedestal is pressed with hand, makes sliding shoe in slide push rod
Under the active force on the inclined-plane in portion, to far from bayonet direction move, until clamp be detached from bayonet, at this time slide push rod upper end position
In in vertical core a.Then, a hand holds umbrella handle portion, and another hand holds piston portion, and piston portion is done to back and forth past in an axial direction
Multiple movement, guide head slidably reciprocates in guide groove at this time, and gas enters by check valve b and venthole a in umbrella handle portion, then from
Check valve a is discharged with venthole b, until the inside air bag gas of inflated supporting pipe is taken out to the greatest extent completely;Piston portion is moved up
To extreme position, the work that closes one's umbrella just is completed.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Fig. 2 be umbrella handle portion of the present invention, swivel, gas control unit, umbrella stand fixing piece and slide push rod sectional view.
Fig. 3 is the portions the A enlarged drawing of Fig. 2.
Fig. 4 is the portions the B enlarged drawing of Fig. 2.
Fig. 5 is the portions the C enlarged drawing of Fig. 2.
Fig. 6, Fig. 7 are the structural schematic diagrams of umbrella handle portion and piston portion.
Fig. 8 is the exploded view of piston portion and the component being arranged in piston portion.
Fig. 9 is the structural schematic diagram in umbrella handle portion.
Figure 10 is the portions the D schematic enlarged-scale view of Fig. 9.
Figure 11 be umbrella handle portion, swivel, gas control unit and umbrella stand fixing piece exploded view.
Figure 12 be umbrella handle portion, swivel and gas control unit sectional view.
Figure 13 is the portions the E enlarged drawing of Figure 12.
Figure 14 is the structural schematic diagram in Figure 13 umbrella handles portion commutation process.
Figure 15 is the structural schematic diagram after the completion of the commutation of Figure 13 umbrella handles portion.
Figure 16 is the structural schematic diagram of gas control unit.
Figure 17 is the sectional view of gas control unit.
Figure 18, Figure 19 are the structural schematic diagrams of a halfbody of swivel.
Figure 20 is the structural schematic diagram of umbrella stand fixing piece.
Figure 21 is the sectional view of inflated supporting pipe.
Figure 22 is the portions the F enlarged drawing of Figure 21.
Figure 23 is the inflated supporting pipe structural schematic diagram of the embodiment of the present invention 3.
Figure 24, Figure 25 are the inflated supporting pipe structural schematic diagrams of the embodiment of the present invention 4.
1, umbrella handle portion;111, positioning protrusion a;112, positioning protrusion b;12, fixing pipe;13, unidirectional valve housing;141, single
To valve a;142 check valve b;15, guide head;16, bayonet;2, piston portion;21, fixed seat;211, push rod positioning region;212, coordinate
Fixed part;22, guide groove;23, rubber ring;3, swivel;311, positioning port a;312, positioning port b;33, spring positioning shoulder;
34, mating groove;35, spring a;4, gas control unit;41, venthole a;42, venthole b;43, outer flange collar;5, umbrella stand fixing piece;
51, umbrella stand connector;52, gas passage;53, umbrella stand fixing sleeve;5a, lower fixing piece;5b, upper fixing element;6, inflated supporting pipe;
60, air bag;61, the first soft magnetic stripe;62, the second soft magnetic stripe;63, welded edge;6a, first support bar;6b, second support bar;6c、
Third supporting rod;7, umbrella cover;71, upper film;72, lower film;721, connector;73, radial support pipe;74, circumferential support tube;7a、
Radial weld bond;7b, circumferential weld bond;8, slide push rod;81, inclined-plane;82, push rod pedestal;83, limiting plate;84, spiral shell is limited
Nail;91, fixed block;911, vertical core a;913, cross-drilled hole;92, sliding shoe;921, clamp;922, spring b;923, vertical core b.
Specific implementation mode
Embodiment 1
According to Fig. 1 to Figure 22, the present embodiment is a kind of inflatable umbrella, including umbrella handle portion 1, is connected to below umbrella handle portion
Piston portion 2 is rotatably connected on the swivel 3 on umbrella handle portion top, is fixedly connected on the gas control unit 4 of swivel upper end,
It is fixedly connected on the umbrella stand fixing piece 5 of gas control unit upper end, the inflated supporting in umbrella stand fixing piece periphery is set
Pipe 6, and it is connected to the umbrella cover 7 of inflated supporting pipe upper end.
The piston portion is in the cylindrical shape of upper end closed;The piston portion upper end is fixedly connected with to be slided with umbrella handle portion inner wall
The rubber ring 23 of connection;It is interference fitted inside the rubber ring and umbrella handle portion, avoids in inflation gas from rubber ring and umbrella handle
It is leaked out in the gap of portion's inner wall;The slide push rod 8 of cuboid is installed in the piston portion;The slide push rod lower end molding
There is the push rod pedestal 82 being slidably matched with piston portion lower end;The piston portion lower part is equipped with fixed seat 21;In the fixed seat
End face forms the push rod positioning region 211 being slidably matched with slide push rod;The fixed seat upper surface is located at push rod positioning
The circumferential position in portion forms the cooperation fixed part 212 being fixedly connected with piston portion lower end;The slide push rod side wall, which is located at, to be pushed away
Stop screw 84 is fixedly connected with above bar positioning region;The slide push rod upper end forms inclined-plane 81.The slide push rod
Can move down under the action of no external force, until stop screw and push rod positioning region upper-end contact, so stop screw with push away
Bar positioning region can make slide push rod not depart from piston portion.
The piston portion internal upper part is fixedly connected with cylinder fixed block 91;The fixed block centre position forms
The vertical core a911 being slidably matched with slide push rod top;The fixed block side diametrically forms cross-drilled hole 913;The cross
Sliding shoe 92 is slidably connected in hole;The sliding shoe intermediary form has the vertical core that the inclined-plane with slide push rod upper end is slidably matched
b923;The sliding shoe forms clamp 921 away from inclined-plane one end;The sliding shoe other end is fixedly connected with spring b922.
Umbrella handle portion lower sides form the bayonet 16 with clamp cooperation positioning.Push rod pedestal upper surface and fixed seat lower end
Exist at a distance from sliding shoe equal thickness between face;When convenient for by upper propulsion arm pedestal, moved up using inclined-plane, make clamp with
Bayonet is detached from, and piston portion is enable to be moved in umbrella handle portion, is convenient for the storage of inflatable umbrella.The slide push rod upper end is with respect to clamp
It is formed on one side with the limiting plate 83 being detached to avoid vertical core b and slide push rod.Umbrella handle subordinate portion is fixedly connected with guiding
First 15;The piston portion side wall forms the guide groove 22 being slidably connected with guide head along piston portion length direction.Guide head exists
It is slided along the guide groove of piston portion length direction setting, makes not produce relative rotation between umbrella handle portion and piston portion, ensure card
Head is with bayonet on same vertical direction.
The centre position of umbrella handle portion upper surface forms fixing pipe 12;The centre position of the fixing pipe upper surface at
Type has the unidirectional valve housing 13 of truncated cone-shaped;The unidirectional valve housing lower face diameter is more than fixed pipe diameter;Check valve is pacified
It fills seat lower face and forms locating ring;Symmetrically arranged check valve there are two being fixedly mounted on the unidirectional valve housing;The list
Include the check valve a141 that umbrella handle portion is connected from inside to outside, and the check valve opposite with the conducting direction of check valve a to valve
b142;The symmetric position that umbrella handle portion upper surface is located at the periphery of fixing pipe forms positioning protrusion a111 and positioning protrusion
b112。
The swivel lower end is corresponded to has been separately formed positioning positioned at the position of the positioning protrusion a and positioning protrusion b
Mouth a311 and positioning port b312;The swivel is made of two identical halfbodies;Described two halfbodies are bolted
Connection;The swivel inner wall lower forms spring positioning shoulder 33;The fixing pipe outer sheath is equipped with spring a35;It is described
The one end spring a offsets with locating ring, and one end offsets with spring positioning shoulder;The swivel upper inside wall forms mating groove
34.The spring a is constantly in compressive state, and check valve can be made to offset with gas control unit and umbrella handle portion and swivel
It offsets.
Gas control unit lower end forms the outer flange collar 43 being fixedly connected with the mating groove;The outer flange collar with match
Close slot interference fit;Venthole a41 and venthole b42 are formed on the gas control unit;The upper ends the venthole a and umbrella stand
Fixing piece is connected to, and lower end offsets with check valve sealing;The upper ends the venthole b extend to the side wall of gas control unit, lower end with
Check valve offsets.
The umbrella stand fixing piece side wall circumferentially uniformly forms multiple umbrella stand connectors 51;Among each umbrella stand connector
Form gas passage 52;The inflated supporting pipe is connected to corresponding umbrella stand connector outer end;On the outside of the inflated supporting pipe
It is connected with inflated supporting pipe to be fixedly connected on to the umbrella stand fixing sleeve 53 on umbrella stand connector;The umbrella stand fixation is set in umbrella
On the outside of Holder joint, and it is connect with umbrella stand joint screw thread.The inflated supporting pipe is formed by two panels plastic film thermal welding, inflation branch
It is hollow air bag 60 in stay tube, inflated supporting pipe both sides and one end end are welded edge 63, inflated supporting pipe other end end
For the open end being connect with umbrella stand fixing piece.Inflated supporting pipe side is also molded there are one magnetic stripe accommodating chamber, and magnetic stripe accommodates
Intracavitary is equipped with the first soft magnetic stripe 61 and the second soft magnetic stripe 62 to folding assisted umbrella cover.When umbrella is packed up, due to first soft
The magnetism of magnetic stripe and the second soft magnetic stripe is attracting, is convenient for the folding storage of umbrella cover.Inflated supporting tube opening end inner wall and umbrella stand
Connector outer wall is adhesively fixed by glue.
When user wants to strut umbrella, gas control unit and swivel are pinched with the finger of a hand, use is another
Hand holds umbrella handle portion, pulls down, and spring a is compressed at this time, and positioning protrusion a is detached from positioning port b, positioning protrusion b is detached from positioning
Umbrella handle portion opposing gas control unit is rotated a low-angle, continues rotating parachute shank by mouth a, until positioning protrusion a is caught in positioning
Mouth a, positioning protrusion b are caught in positioning port b, and it is check valve a that venthole a is corresponding at this time, and venthole b corresponding is check valve b.It connects
It, a hand holds umbrella handle portion, and another hand holds piston portion, and piston portion is done to reciprocating motion back and forth in an axial direction, at this time
Guide head slidably reciprocates in guide groove, and when piston portion pulls down, gas is passing through check valve b and venthole b from the external world, into
Enter in umbrella handle portion, enter in inflated supporting pipe from check valve a and venthole a, until the inside air bag gas of inflated supporting pipe
When reaching the limit values, spring a can be compressed, and check valve a is made to be detached from venthole a;Continue to inflate, extra gas is from check valve a
It is leaked out in gap between venthole a, air bag can't be made to rupture.Then, piston portion is pulled down, due to bullet at this time
Spring b is in compressive state, when the cross section of clamp is overlapped with the cross section of bayonet, under the action of spring b elastic force, clamp from
Bayonet pops up outward, secures the relative position of piston portion and umbrella handle portion.When user wants to close one's umbrella, with the finger of a hand
Gas control unit and swivel are pinched, umbrella handle portion is held with another hand, pulls down, in this process in inflated supporting pipe
Most of gas be discharged;Spring a is compressed at this time, and positioning protrusion a is detached from positioning port a, positioning protrusion b is detached from positioning port b,
Umbrella handle portion opposing gas control unit is rotated into a low-angle, continues rotating parachute shank, until positioning protrusion a is caught in positioning port b,
Positioning protrusion b is caught in positioning port a, and it is check valve b that venthole a is corresponding at this time, and venthole b corresponding is check valve a.Then,
Push rod pedestal is pressed with hand, makes sliding shoe under the active force on the inclined-plane on slide push rod top, is moved to the direction far from bayonet, directly
It is detached from bayonet to clamp, the upper end of slide push rod is located in vertical core a at this time.Then, a hand holds umbrella handle portion, and another is held
Firmly piston portion, and piston portion is done to reciprocating motion back and forth in an axial direction, guide head slidably reciprocates in guide groove at this time, gas warp
It crosses check valve b and venthole a to enter in umbrella handle portion, then is discharged from check valve a and venthole b, until the air bag of inflated supporting pipe
Internal gas is taken out to the greatest extent completely;Piston portion is moved upward to extreme position, just completes the work that closes one's umbrella.
Embodiment 2
According to Fig. 1 to Figure 22, the present embodiment is a kind of inflatable umbrella, including umbrella handle portion, is slided with umbrella handle portion inner wall
The dynamic piston portion being connected, is rotatably connected on the umbrella cover connector on umbrella handle portion top, and be connected on umbrella cover connector and
The hollow umbrella cover or multiple inflated supporting pipes being connected with umbrella cover connector;When what is connected on umbrella cover connector is inflated supporting
Guan Shi is connected with umbrella cover on each inflated supporting pipe;There are two symmetrically arranged check valves for the fixed installation of umbrella handle portion upper end;
The check valve includes the check valve a that umbrella handle portion is connected from inside to outside, and the check valve opposite with the conducting direction of check valve a
b;Upper end and umbrella stand fittings are formed on the umbrella cover connector, lower end seals the blow vent a to offset with the check valve;
The spring a for making check valve be pushed against on the blow vent is connected between the umbrella handle portion and umbrella cover connector.
Embodiment 3
According to fig. 2 shown in 3, the difference of the present embodiment and embodiment 1 is that 6 lower part of inflated supporting pipe is also connected with from outside to inside
There are first support bar 6a, second support bar 6b, third supporting rod 6c;The first support bar 6a, second support bar 6b, third
It is hollow air bag in supporting rod 6c;Third supporting rod inner end 6c closings, the other end and the inflated supporting pipe unicom;Institute
The outer end unicom of the one end first support bar 6a and the inflated supporting pipe is stated, the other end joins in the middle part of the second support bar 6b
It is logical;The one end the second support bar 6b and inflated supporting pipe unicom, the other end is with the third supporting rod 6c close to blind end
Position unicom;The structure is after airbag aeration, the first support bar 6a of lower part, second support bar 6b, third supporting rod 6c energy
It is enough to play a supporting role to inflated supporting pipe 6, enhance inflated supporting pipe(Especially inflated supporting pipe is close to outer end portion)It is counter-bending
Ability, improve umbrella cover integral strength, optimization umbrella cover wind resistance, rain ability.
Embodiment 4
According to fig. 24, shown in Figure 25, the present embodiment and the difference of embodiment 1 are, the umbrella stand fixing piece 5 includes fixing
The lower fixing piece 5a and upper fixing element 5b of socket;Plastic film of the umbrella cover 7 by two panels in periphery thermal welding is formed;Two panels institute
It is upper film 71 and lower film 72 to state plastic film, is opened up among the lower film there are one connector 721, outside the connector of the lower film
It is fixedly clamped in week and is connected between upper fixing element and lower fixing piece, and be bonded admittedly by glue between upper fixing element and lower fixing piece
Fixed or threaded connection is fixed.
The umbrella cover radially forms radial support pipe 73, and each radial support pipe is in umbrella cover intermediate connection;The umbrella
On face circumferential support tube 74 is formed between two neighboring radial support pipe;Each radial support pipe both sides are two
Radial direction weld bond 7a disposed in parallel, each circumferential support tube both sides are two circumferential weld bond 7b being placed equidistant with, and
One end of circumferential weld bond connects with a radial weld bond, adjacent there are being connected between the other end and another radial weld bond
The blow vent of two circumferential support tubes, and the two neighboring vent locations between each two adjacent radial support tube are mutual
It is staggered.The radial support pipe forms the skeleton of umbrella cover, circumferential support tube and the supporting role for playing auxiliary so that umbrella cover only needs
Less aeration quantity is wanted to can reach enough support strengths.