CN2272225Y - Central stick for telescopic umbrella with inner concave arc-shape multi-edge side - Google Patents

Abstract

The utility model relates to a central stick for a telescopic umbrella with arc-shaped inner-concave multi-rid edges, which is formed by sliding and matching and connecting in series a lower pipe of which the cross section forms a circle shape, an upper pipe and a middle pipe of which the cross section forms a multi-rid edge shape, wherein, the upper ends of the lower pipe and the middle pipe are both provided with sliding and clamping pipe heads which are glidingly fitted with the front pipe and have uniform section shape. The utility model is characterized in that the lower pipe part with the multi-rid edge shape of the upper pipe and the combined and closed cross section of the sliding and clamping pipe heads with the multi-rid shape are formed by combining a plurality of oblong plate edges which form an inner-concave arc shape, wherein, the lower pipe part is matched with the multi-rid-shaped middle pipe, and the cross section is positioned at the upper end of the lower pipe and is glidingly fitted with the middle pipe. Each arc-shaped inner-concave rectangular plate edge are respectively symmetric and inner concave towards the longitudinal shaft line of the central stick, and an angle rid at the cross point of the contiguous plate edges forms a star shape to reinforce and increase thickness.

Description

Telescope umbrella with many ribs of indent arc surrounding edge with in rod

The utility model relates to a kind of sunshade, hides the rain parachute kit, rod during particularly a kind of Telescope umbrella with many ribs of indent arc surrounding edge is used.

Present folded umbrella is mainly by rod in telescopic, be connected in rod upper end and and folding umbrella cover between support frame constitute, and middle rod is the topmost parts that constitute umbrella, and structure such as Fig. 1 of having rod in the folded umbrella now are extremely shown in Figure 5, Fig. 1 is the outline drawing that middle rod is stretched tension state, and Fig. 2 to Fig. 5 is the cross-sectional view of its different sections, be not difficult to find out by figure, in rod be by under manage 11, middle pipe 13 reaches goes up pipe 14 mutual fits formations, and circular following pipe 11 links to each other with handle 12, be connected with last nest 15 and go up pipe 14 tops, be articulated with the parietal bone bar 21 that umbrella distributes and go up nest 15, and down the lower support rib bar 22 of nest 16 and umbrella frame 2 pivot is even mutually.Its down pipe 11 epimeres be provided with cylindrical tube portion 111 and extend the sliding card of formed last six prismatics tube head 112 by cylindrical tube portion upsweep, then be provided with the following six rib pipe portions 132 that are slidingly matched with the sliding card of six prismatics tube head 112 and slide the following cylindrical tube 131 of joining at the hypomere of the middle pipe 13 of six double-wedge sections with cylindrical tube portion 111.Referring to Fig. 2 and Fig. 3.In like manner, be provided with six rib pipe portions 133 and the sliding card of last cylinder tube head 143, and pipe 14 hypomeres are provided with and the following six rib pipe portions 141 of 133 and 134 corresponding cooperations and following cylindrical tube portion 142 on circle at the epimere of middle pipe 13.Referring to Fig. 4 and Fig. 5.Manage 11 and 14 main paragraph cross section up and down for circular, and the main paragraph of middle pipe 13 is six prismatics.Though the middle rod of this structure has the simple advantage of processing and fabricating, but maximum shortcoming is because each face of six double-wedge sections in the stage casing that mainly is slidingly matched 13 of middle rod is flat face, and the corner angle at the adjacent flat place of facing directly partly are the ∧ shape of equal thickness, so, corner angle intensity and positioning and guiding poor-performing partly, so when flexible, easily rock the cooperation place when supporting, partly yielding damage and cause the damage of whole umbrella and scrap of corner angle.

The purpose of this utility model just is to overcome the above-mentioned shortcoming and defect of prior art, and provides a kind of intensity height, positioning and guiding to stablize, and rod in the Telescope umbrella usefulness with many ribs of indent arc surrounding edge of indeformable damage.

The purpose of this utility model is to realize by following technical scheme:

The utility model is by the rounded following pipe in cross section, the middle pipe three in last pipe and many prism shapes cross section slip cap mutually joins the serial connection formation, the upper end of last pipe be fixed with the parietal bone bar pivot connect on nest, on pipe on the last nest bottom, be arranged with the following nest that is articulated with the lower support rib bar, in the hypomere of pipe the one following cylinder pipeline section that is nested and joins with pipe epimere is down arranged, and the hypomere of going up pipe has a following many prism shapes pipe portion that is nested and joins with middle pipe epimere, the upper end of following pipe and middle pipe is equipped with sliding card tube head slippery with a last pipe joint and that cross sectional shape is identical, it is characterized in that: with pipe in many prismatics be nested following many prism shapes pipe portion of the last pipe of joining and down pipe upper end and the middle pipe cunning sliding card of the many prismatics tube head of joining to enclose the transversal of group sealing be to enclose group by a plurality of rectangle edges of boards that are the indent arc to constitute, the rectangle edges of boards of each indent arc are all to the corresponding indent of the longitudinal axis of middle rod, and the angle ridge of its adjacent edges of boards intersection is The reinforcement of shape thickens shape.

Therefore remarkable result of the present utility model is as follows:

The the 1st: because the contact-making surface that each pipeline section cunning is joined is changed over the arcuation concave surface of indent by straight plane, thereby, the sliding-contact area of inside and outside pipeline section is increased, and the stressed minimizing of unit, the positioning and guiding effect that had of inner concave itself in addition makes it cooperate the stability of sliding to improve.

The 2nd: because

Shape angle spine thickens and the improvement of shape, has prevented that not only stress from concentrating to the excessive of wedge angle portion, and, also improved its intensity, so each angle spine is difficult for deformed damaged.

Concrete structure of the present utility model is realized by the following examples and accompanying drawing:

Fig. 1 is the structure chart of rod in the existing folded umbrella;

Fig. 2 is the profile in the 2-2 cross section of Fig. 1;

Fig. 3 is the profile in the 3-3 cross section of Fig. 1;

Fig. 4 is the profile in the 4-4 cross section of Fig. 1;

Fig. 5 is the profile in the 5-5 cross section of Fig. 1;

Fig. 6 is a structure chart of the present utility model;

Fig. 7 is the profile in the 7-7 cross section of Fig. 6;

Fig. 8 is the profile in the 8-8 cross section of Fig. 6;

Fig. 9 is the profile in the 9-9 cross section of Fig. 6;

Figure 10 is the profile in the 10-10 cross section of Fig. 6;

Figure 11 is the profile in the 11-11 cross section of Fig. 6;

Figure 12 is the profile in the 12-12 cross section of Fig. 6;

Figure 13 is the forming principle figure of the more shallow indent pipe that adopts of the utility model;

Figure 14 is the forming principle figure of indent pipe deeply that the utility model adopts;

Figure 15 is the comparison diagram of contact area of the present utility model and existing plane prismatic pipe contact area;

Figure 16 is that the utility model is mended the thickness comparison diagram that increases angle ridge and existing plane angle ridge;

Below in conjunction with accompanying drawing 6-16 concrete structure of the present utility model is described in detail:

Pipe 13 during the utility model and prior art different just are, produce the sliding card of the many prismatics in the upper end tube head 112 of sliding following pipe 11 of joining relation with middle pipe 13 and go up pipe 14 lower ends and the cross sectional shape of middle pipe is slippery following many prismatics pipe portion 141 on, be that its each edges of boards that constitutes many prismatics pipe of above-mentioned these matching parts all are the indent arc, and its angle spine is

The thickened section of shape, and other structure is all identical with existing middle bar structure, therefore, Fig. 7, Figure 10 are identical with Fig. 2, Fig. 5, Fig. 6 is also identical in appearance with Fig. 1, and Figure 11 and Figure 12 are owing to being local longitudinal sectional drawing, so seem also not obvious, Fig. 8 and Fig. 9 then are two figure that best embody the utility model structural change, are not difficult to find out concrete structure of the present utility model from Fig. 8 and Fig. 9.

The utility model by the middle pipe 13 of the rounded following pipe 11 in main paragraph cross section and last pipe 14 and many double-wedge sections mutually slip cap join and constitute, the upper end of last pipe 14 be connected with parietal bone bar 21 articulate on nest 15, on pipe 14 on last nest 15 bottoms, be set with the following nest 16 that articulates with lower support rib bar 22, under manage 11 hypomeres and link to each other with handle of umbrella 12, the upper end of managing 11 upper end and middle pipe 13 down respectively has one with middle pipe 13 and go up the sliding card tube head 112 and 134 that pipe 14 slip caps are joined, and the lower end of the lower end of middle pipe 13 and last pipe 14 all has one with pipe 11 and middle pipe 13 are slided the round tube portion 131 and the polygon pipe portions 141 of joining down, it is characterized in that: constitute in many seamed edges the rectangle that each surrounding edge 130 in the cross section of pipe 13 is the indent arc, the rectangle surrounding edge 130 of each indent arc is all recessed to the central part of the longitudinal axis 10 of middle rod, the 13 polygon pipe portions that are slidingly fitted 141 all are indent arc surrounding edge 110 and 140 with each surrounding edge of sliding in the cross section that blocks tube head 112 with pipe in the polygon with indent arc surrounding edge 130, and the roof-angle that the adjacent surrounding edge of each indent arc constitutes is The reinforced roof-angle of shape.Referring to Fig. 6, Fig. 8 and Fig. 9.

Figure 13 and Figure 14 are two kinds of Limit Analysis figure that form indent arc surrounding edge, the range of choice of recessed people's degree of depth of indent promptly has been described, what Figure 13 represented is that the recessed degree of depth is the most shallow a kind of situation, and a kind of situation that Figure 14 represents is the recessed degree of depth when maximum, be situated between and between the two the scope applicatory that is, each symbol definition among two figure is: S1, S2 is an arc length, L1, L2 is string (promptly being connected in the air line distance between each rectangle limit joint P), H1, H2 is the vertical line D1 perpendicular to string, the intersection point X1 of D2 and arc length, vertical height between the X2, P1, P2 is the centre point of arc S1 and S2, R1, R2 is arc S1, the radius of S2, connect P, P1, X1 and P, P2,3 of X2 then can constitute two triangles, L ' is the triangle hypotenuse, A1, C1, A2, C2 is respectively angle, can draw following formula by the triangle of above-mentioned parameter and Figure 13 and Figure 14:

H1＝L1/2XtanA1

B1=90 °-A1, B1 is the complementary angle of A1

C1＝180°-2X(90°-A1)＝2A1

D1＝L1/2XC0TC1＝L1/2Cot(2A1)

R1＝H1+D1

In like manner:

H2＝L2/2XtanA2

D2＝L2/2Cot(2A2)

R2＝H2+D2

Calculate formula by above two batch totals, the angle that can derive A1, A2 can be between 5 °-30 °, and preferable angle is between 8.5 °-15 °.

Because the length of arc length S is greater than the length of chord length L, so the contact-making surface of indent arcuation must be greater than flat face, referring to Figure 15.

The ratio of H1, H2 and L1, L2 is between 1/20 to 1/5.The ratio that is chord length L between the indent depth H on each imploded arcs limit and each the indent arc length two intersection point P is between 1/20 and 1/5.

Certainly, the utility model is not limited to the shape that six rib hexagons enclose, as the rhombus that enclose on four ribs, four limits, the polygonal that enclose on eight ribs, eight limits is all passable with the polygon concave arc surrounding edge of tool that circular mast is designed to.

As seen from Figure 16, the thickness Rf at the polygon roof-angle place that is made up of polygon imploded arcs limit 130 like this, can play the non-deformability of reinforcement greater than 1.2 to 1.5 times of the existing ridge dot thickness T of right-angle side intersection.

From Figure 13 and Figure 14 as can be seen, the arc length S of each indent arc surrounding edge is symmetry shape and distributes, the intersection point P of the mid point X of arc length S and adjacent indent arc surrounding edge and 1/2 chord length L/2 place constitute a right angle triangle altogether, and the hypotenuse L ' of right angled triangle and the included angle A between the L/2 are selected between 3 ° of-30 ° of scopes.

Thereby, can guarantee not increase at cumulative volume, increase contact guiding area under the preceding topic that the whole wall thickness of material does not increase, it is stressed to reduce part and unit are.Particularly thickening and the design of inner sunken face of people's roof-angle portion has the stress of minimizing and concentrates, the effect of reinforcement, and have longitudinally guiding, the circumferentially anti-distortion effect of location.

Claims (5)

1, Telescope umbrella with many ribs of indent arc surrounding edge with in rod, by the middle pipe (13) of the rounded following pipe (11) in main paragraph cross section and last pipe (14) and many double-wedge sections mutually slip cap join formation, be connected with the last nest (15) that articulates with parietal bone bar (21) in the upper end of last pipe (14), be set with the following nest (16) that articulates with lower support rib bar (22) on the pipe (14) going up of last nest (15) bottom, following pipe (11) hypomere links to each other with handle of umbrella (12), the upper end of following pipe (11) and the upper end of middle pipe (13) respectively have one with middle pipe (13) and go up the sliding card tube head (112) and (134) that pipe (14) slip cap is joined, and the lower end of the lower end of middle pipe (13) and last pipe (14) all has one with pipe (11) and middle pipe (13) are slided the round tube portion (131) and the polygon pipe portion (141) of joining down, it is characterized in that: constitute in many seamed edges the rectangle that each surrounding edge (130) in the cross section of pipe (13) is the indent arc, the rectangle surrounding edge (130) of each indent arc is all recessed to the central part of the longitudinal axis (10) of middle rod, all be indent arc surrounding edge (110) and (140) with each surrounding edge in the cross section of the polygon pipe portion (141) that is slidingly fitted of pipe (13) in the polygon with indent arc surrounding edge (130) and sliding card tube head (112), the roof-angle of the adjacent surrounding edge formation of each indent arc is

The reinforced roof-angle of shape.

2, according to the described Telescope umbrella with many ribs of indent arc surrounding edge of claim 1 with in rod, it is characterized in that: the arc length S of each indent arc surrounding edge is symmetry shape and distributes, the intersection point P of the mid point X of arc length S and adjacent indent arc surrounding edge and 1/2 chord length L/2 place constitute a right angle triangle altogether, and the hypotenuse L ' of right angled triangle and the included angle A between the L/2 are selected between 3 ° of-30 ° of scopes.

3, according to claim 1 or 2 described Telescope umbrellas with many ribs of indent arc surrounding edge with in rod, it is characterized in that: the included angle A between the hypotenuse L ' of right angled triangle and 1/2 the chord length L/2 is between 8 ° to 15 °.

4, according to claim 1 or 2 described Telescope umbrellas with many ribs of indent arc surrounding edge with in rod, it is characterized in that: the thickness at the roof-angle place that adjacent in twos indent arc surrounding edge is constituted is 1.2 to 1.5 times of body wall thickness of indent arc surrounding edge.

5, according to claim 1 or 2 described Telescope umbrellas with many ribs of indent arc surrounding edge with in rod, it is characterized in that: the indent depth H of each indent arc surrounding edge and the ratio of chord length L are between 1/20 to 1/5.

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