CN200947874Y

CN200947874Y - Middle bar structure able to reduce the gap

Info

Publication number: CN200947874Y
Application number: CN 200620018000
Authority: CN
Inventors: 张书闵
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-29
Filing date: 2006-08-29
Publication date: 2007-09-19
Anticipated expiration: 2016-08-29

Abstract

The utility model relates to a middle stick structure that can reduce the gap, comprising a multi- pipe; wherein, the pipes are nested with each other, a binding pipe is arranged at the nesting place of each pipe. The utility model is characterized in that each pipe is a symmetrical structure, excepting the top and low pipe, the cross section of the other pipe is a polygon structure, and at least one side is a non-concave structure. The utility model can ensure the pipes of the middle stick are suitably matched with each other, is convenient to position the binding pipe, and can enormously reduce the space between each pipe, keeps the umbrella opening spring balance and stability, makes the umbrella auto open and close, therefore the utility model can not only reduce the volume, but also work stably, normally and successfully.

Description

Can reduce the middle bar structure in gap

Affiliated field

The utility model relates to parachute kit, the middle bar structure of automatic umbrella folding and unfolding specifically, and this structure therefrom rod angle that deployment spring is set is set out, and excellent internal clearance in reducing to greatest extent helps the installation that is arranged at of deployment spring.

Background technology

Automatic umbrella folding and unfolding, wherein bar structure normally is made of the more piece pipe, and is nested against one another between the more piece pipe, and can be successively along sliding, to have out the effect of receipts, the inside of middle rod is hollow, in order to open the needs of receipts automatically, be provided with deployment spring, deployment spring runs through whole middle rod basically.For above-mentioned structure, need solve two problems usually, open receipts smoothly with what guarantee automatic umbrella folding and unfolding:

One, be in the umbrella rod each pipe between smooth cooperation.It is relation that each pipe of middle rod will form good suitable sliding sleeve, and can not separate;

Two, be the interior space appropriateness of each pipe of umbrella, to guarantee the balance of deployment spring in middle rod.The internal diameter of each pipe can not be too little, too little deployment spring can not be installed smoothly, can not be too big, too conference increases the internal clearance of each pipe, causes the deployment spring distortion, causes and can not close one's umbrella smoothly, damage the balance of deployment spring in each pipe of middle rod, especially for the automatic umbrella folding and unfolding more than four pipe joints, the cover of its pipe system relation more is strict with, even difference 1mm also can cause the balance of deployment spring destroyed.

Therefore, patent application 98250247.8 has designed many foldings umbrella of the telescopic middle rod of the prominent circle of a kind of gradually layer, this umbrella is the middle bar structure of improvement umbrella, the cross section of middle each pipe of rod is designed to have the structure of arc-shaped concave: on manage the size minimum, its cross section has a plurality of arc-shaped concave quadrants, forms the ridge protuberance between two adjacent quadrants, from top to bottom, increasing the convex surface quadrant of pipe gradually, is circular until the pipe of foot.Should in rod purpose of design mainly for rod in reducing take volume, the volume of umbrella when closing one's umbrella to dwindle, and reckon without and middle rod in the problem of each ligament.

Patent application 00263166.0 also provides a kind of similar solution, it is that the axis with middle rod is a benchmark, each pipe forms the indent quadrant successively, and the indent quadrant of the pipe of each Guan Yuqi outside differs to more than or equal to 1, it is suitable to guarantee to open close one's umbrella operation circle like this, and has good hand-held sense.

Two kinds of above-mentioned designs, has this effect in theory, but in the application of reality, it has two defectives: at first, suitable sliding fit in the umbrella between each pipe of rod, not only to consider the cross-sectional structure of each pipe of umbrella, and more to consider to manage the setting and the cooperation of the beam tube of bottom, as everyone knows, beam tube be used for retraining the pipe of two cooperations can be along sliding fit, guarantee again not break away from that above-mentioned structure causes beam tube to be developed by the indent quadrant forming, be difficult in practice realize, so in present concrete application, there is not the umbrella of said structure to occur always; Secondly, closing one's umbrella when controlling of automatic umbrella folding and unfolding, to the requirement of deployment spring be requirement its have balance, the linear state that promptly keeps self, can not be twisted, and the engage sleeves of more piece pipe system relation will inevitably cause having certain clearance between the pipe, if the excesssive gap of the pipe of the pipe of minimum diameter and maximum inner diameter, deployment spring will inevitably twist when closing one's umbrella, cause and to close one's umbrella smoothly, even be difficult to close one's umbrella, especially for the above automatic umbrella folding and unfolding of four foldings, it is more obvious, and above-mentioned structure can not solve this problem, on the contrary, because its concave surface quadrant and round cooperating, gap increase between each pipe of rod in can causing, though can reduce the shared volume of rod in the umbrella, the gap in the umbrella in the rod has but increased, and is difficult to keep the balance of deployment spring.

Summary of the invention

Based on this, the purpose of this utility model provides a kind of middle bar structure with excellent internal clearance in the minimum, and this structure can make deployment spring keep its balance at any time, and what help umbrella opens receipts automatically.

Another purpose of the present utility model is to provide a kind of middle bar structure that reduces the gap, the characteristics that each pipe box system of rod cooperated during this structure can make full use of, the gap that had appropriateness in both can having guaranteed in the rod, make deployment spring keep balance, barred body is long-pending in can reducing as best one can again, is convenient to make above many foldings umbrella and the little automatic umbrella folding and unfolding of volume of four foldings.

Therefore, the utility model is achieved in that

A kind of middle bar structure that reduces the gap, it includes the more piece pipe, this more piece pipe is nested against one another, the nested position of each pipe is provided with beam tube, it is characterized in that and each pipe joint is symmetrical structure, except that the top or pipe bottom, the cross section of all the other pipes is a polygonized structure, and has at least one side to be non-concave inward structure.This structure can guarantee to have enough middle excellent inner spaces, and holding deployment spring, and reducing between each pipe of middle rod is enough little, makes deployment spring can keep balance, can torsional deformation.

Non-concave inward structure is meant that polygonal at least one limit does not cave inward, to guarantee that maximal clearance between each pipe joint is smaller or equal to 0.7mm.

Each above-mentioned pipe joint, the top or pipe bottom are round tube, except round tube, the cross section of all the other pipes is regular polygon and has inside symmetry depression or new polygonized structure of outstanding structure formation.

The middle bar structure in above-mentioned reduced gap, the pipe of its internal diameter minimum, cross section is a circular configuration.

Above-mentioned polygonized structure is octagon at least, preferably the above polygon of decagon.

The cross section of above-mentioned pipe, its regular polygon cave inward and partly are the part on each limit, and the limit of the both sides of this sunk part is symmetrical.The mid portion that is each limit caves inward.

Above-mentioned depression, the degree of depth of its depression are the 1/10-1/5 of each edge lengths, have enough intensity with the limit that guarantees pipe.

Above-mentioned depression, it can be distributed on each limit of regular polygon, also can be symmetrically distributed on several limits of regular polygon.

Above-mentioned outstanding structure, it is that the corner part of regular polygon is outwards slightly outstanding, forms the bending of arc, its effect is the same with the effect of sunk structure, and should outstanding structure be convenient to make, can guarantee pipe suitablely slide, bright and clean surface.

Above-mentioned middle bar structure, after the corner part of its regular polygon is outstanding, the outer tube of external this pipe, its structure further develops, and corresponding arc part is inwardly slightly caved at the position of the corresponding polygon flat part of the cross section of this outer tube, its same curved structure, depressed part dwindles the gap between the pipe again.

Above-mentioned middle bar structure, an one preferred version is: the cross section of interior pipe is a circular configuration, the middle pipe cross section of pipe is a regular polygon in being connected, and the turning of this regular polygon forms arcuate structure, with the external diameter of pipe in dwindling, and each pipe of pipe in external being somebody's turn to do, its cross section is in the correspondence pipe flat part and caves inward, the position of corresponding arcuate structure is an arcuate structure, and this structure can further be dwindled the volume of middle rod, is convenient to make the automatic umbrella folding and unfolding of small size.

Above-mentioned middle bar structure, an one preferred version is: the cross section of interior pipe is a circular configuration, the cross section of the middle pipe of pipe is that circular several symmetric parts inwardly slightly cave in being connected, first outer tube of pipe can be circle or the outwards slightly outstanding cross-sectional structure that forms of sunk part on the cross section basis of middle pipe in the linking, the pipe cross section that is connected second outer tube of first outer tube is a regular polygon, and the turning of this regular polygon forms arcuate structure, the cross section that is connected the 3rd outer tube of second outer tube inwardly omits sunk structure or is regular polygon for circular or circular several symmetric parts, and the turning of this regular polygon forms arcuate structure.

Second and third above-mentioned outer tube is not the necessary condition that constitutes rod in the umbrella, is omissible under situation about allowing.

The utility model adopts above-mentioned structure, can solve previously described two problems fully, be along sliding fit between each pipe of rod in can either guaranteeing, be convenient to the setting of beam tube, gap in can reducing to greatest extent again between each pipe of rod, the balance and the stability that keep deployment spring make that automatic umbrella folding and unfolding both can reduced volume, can stablize again, normally, successfully work.

And above-mentioned simple in structure, be convenient to realize, especially provide a kind of preferred plan that umbrella draws volume in that reduces for the above many foldings umbrella of four foldings.

Description of drawings

Fig. 1 is the package assembly schematic diagram of the utility model embodiment one,

Fig. 2 is each pipe decomposing schematic representation of middle rod of the utility model embodiment one,

Fig. 3 is the assembling schematic diagram of the utility model embodiment two,

Fig. 4 is each pipe decomposing schematic representation of middle rod of the utility model embodiment two,

Fig. 5 is the perspective view of the third embodiment of the utility model.

The specific embodiment

With reference to the accompanying drawings, describe enforcement of the present utility model in detail.

Fig. 1 has only three foldings for the utility model, the structural representation when promptly middle rod has only three pipes.Shown in the figure, and, divide according to internal diameter in conjunction with shown in Figure 2, from small to large, pipe 10, middle pipe 20 and outer tube 30 in being followed successively by, wherein cross section (other shape of the following stated of interior pipe 10, except particularly pointing out, be the shape of cross section) be circular configuration, to form the structure of minimum diameter; Middle pipe 20 is the decagon structures that form on the basis of regular pentagon, and promptly the turning of regular pentagon all is evolved into arcuate structure, makes that should middlely manage 20 have flat part 21 and curved portions 22, can dwindle the internal diameter of pipe 20 in this; The structure of outer tube 30 further develops on the structure of middle pipe 20: the part of the flat part 21 of pipe 20 is omited indent in its correspondence, forms depressed part 31, and the curved portions 22 of pipe 20 is still curved portions 32 in the correspondence, is convenient to along sliding fit.Wherein the structure of each pipe can very clearly be found out from Fig. 2.

Fig. 3 and shown in Figure 4, structural representation for another embodiment of the utility model, in this embodiment, the pipe of middle rod has 5, according to internal diameter from small to large, and pipe 110, middle pipe 1, middle pipe 2 130, middle pipe 3 140 and outer tube 150 in being followed successively by, wherein, in pipe 130, middle pipe 3 140 and outer tube 150 structure with interior pipe 10 shown in Figure 1, middle pipe 1,2 30 3 pipes of middle pipe is identical respectively, the cross section of interior pipe 110 is a circular configuration, to form the structure of minimum diameter; Middle pipe 1 is in the regualr decagon structure, (in other embodiment, each turning of this regualr decagon can all be evolved into arcuate structure, perhaps symmetry is evolved into the arc result, make and should have flat part and curved portions by middle pipe, can dwindle the gap that is connected of managing in this with other pipe), interior pipe 110 just has circular configuration usually, be convenient to make and install, and itself and being connected the gap and can reaching and minimize of middle pipe 1.

The cross section of middle pipe 2 130 is circular;

Middle pipe 3 140 is the decagon structures that form on the basis of regular pentagon, the turning that is regular pentagon all is evolved into arcuate structure, make and to have flat part 121 and curved portions 122 by middle pipe 3 140, can dwindle the internal diameter of pipe 3 140 in this and the gap that is connected with middle pipe 2 130 and outer tube 150 thereof.

The structure of the structure of outer tube 150 and outer tube shown in Figure 1 30 is similar, it further develops on the structure of middle pipe 3 140: the part of the flat part 121 of pipe 3 140 is omited indent in its correspondence, form depressed part 131, the curved portions 122 of pipe 3 140 is still curved portions 132 in the correspondence, is convenient to along sliding fit.

The middle bar structure form of triple folding umbrella shown in Figure 1, can be applicable to present triple folding umbrella structure, the middle bar structure form of five folding umbrellas shown in Figure 3, be convenient to make automatic umbrella folding and unfolding more small and exquisite, that volume is littler, and it not only can guarantee the suitable sliding fit of rod in the umbrella, also can guarantee the setting of deployment spring to greatest extent, make deployment spring in middle rod, have balance, can not bring the phenomenon of torsional deformation because of the internal diameter increase that many folding pipe boxes system causes.

Shown in Figure 5, this embodiment shown a kind of four the folding umbrellas middle bar structure, according in the umbrella rod external diameter, be successively from outside to inside in first the rod 1, second in the rod the 2, the 3rd in the rod the 3 and the 4th in the rod 4, its main feature is: its structure difference of adjacent middle rod, one structure is identical at interval.

In other words, in first in the rod the 1 and the 3rd cross section of rod 3 all be circle, their structure is identical; In second in the rod the 2 and the 4th rod 4 cross section be regualr decagon (also can be octagon), their structure is also identical.

With regard to structure shown in Figure 4, rod can be not quite similar in the second and the 4th, and rod can adopt the form of distortion in the second and the 4th, and promptly their symmetrical a plurality of limits can be arc, are convenient to reduce to assemble the gap of rod in the back.

Above-mentioned specific descriptions are made several specific embodiment of the present utility model; do not represent all modes of the present utility model that realize; every structure and the utility model are similar; has identical or similar purpose; and can reach the technical scheme of constructed effect, all should be in protection domain of the present utility model.

Claims

1, a kind of middle bar structure that reduces the gap, it includes the more piece pipe, this more piece pipe is nested against one another, the nested position of each pipe is provided with beam tube, it is characterized in that and each pipe is symmetrical structure, except that the top or pipe bottom, the cross section of all the other pipes is regular polygon and has inside symmetry depression or new polygonized structure of outstanding structure formation.

2, the middle bar structure that reduces the gap as claimed in claim 1 is characterized in that the pipe of internal diameter minimum, and cross section is a circular configuration.

3, the middle bar structure that reduces the gap as claimed in claim 1 is characterized in that above-mentioned polygonized structure, is octagon at least.

4, the middle bar structure that reduces the gap as claimed in claim 1, the cross section that it is characterized in that above-mentioned pipe, its regular polygon part that caves inward is the part on each limit, and the limit of the both sides of this sunk part is symmetrical, and promptly the mid portion on each limit caves inward.

5, the middle bar structure that reduces the gap as claimed in claim 4 is characterized in that above-mentioned depression, and the degree of depth of its depression is the 1/10-1/5 of each edge lengths.

6, the middle bar structure that reduces the gap as claimed in claim 4 is characterized in that above-mentioned depression, and it can be distributed on each limit of regular polygon, also can be symmetrically distributed on several limits of regular polygon.

7, the middle bar structure that reduces the gap as claimed in claim 1 is characterized in that above-mentioned outstanding structure, and it is that the corner part of regular polygon is outwards slightly outstanding, forms the bending of arc.

8, the middle bar structure that reduces the gap as claimed in claim 7 is characterized in that above-mentioned middle bar structure, after the corner part of its regular polygon is outstanding, the outer tube of external this pipe, corresponding arc part, its same curved structure are inwardly slightly caved in the position of the corresponding polygon flat part of its cross section.

9, the middle bar structure that reduces the gap as claimed in claim 8, it is characterized in that above-mentioned middle bar structure, the cross section of interior pipe is a circular configuration, the middle pipe cross section of pipe is a regular polygon in being connected, and the turning of this regular polygon forms arcuate structure, external should in each pipe of pipe, its cross section is that the pipe flat part caves inward in the correspondence, the position of corresponding arcuate structure is an arcuate structure.