DE8708859U1 - umbrella - Google Patents

Description

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The invention relates to a screen for protection against

Rain, wind or sun. |

Umbrella can be used in everyday life as rain protection, or for

appropriate design in the leisure sector, for example^ |

e.g. on the beach, for canoeing or wind protection. As the umbrella can also be used as an air pump, it is particularly suitable for cyclists.

Today's umbrella is essentially characterized by the waterproof, collapsible umbrella roof, which is stretched by means of a spoke-shaped rod that is attached in a star shape to the umbrella support in the center.

The spokes of the conventional umbrella

their ends as a source of danger for head- especially |

Eye injuries shown.

On the other hand, the service life of these umbrellas is generally inadequate due to the almost point-like attachment of the umbrella's outer skin to the spoke ends.

It is usually not possible to adjust the strap length to the user.

There is also no locking device on the umbrella holder, which is advantageous for cycling.

The invention is based on the task of designing an umbrella that does not pose a danger to the user or the environment, whose strap length can be continuously adjusted to suit the intended use and which, depending on the application, can also be attached to a bicycle, for example. As a secondary function, the folded umbrella should enable the generation of compressed air, such as is required for bicycle tires, for example.

These tasks are solved in a generic facility by the characteristic features of Aneprucha 1.

The pump integrated in the umbrella for emptying the compression chambers is equipped with an automatic suction valve in the piston base and a check valve at the pump outlet. The piston rod is locked in stages to adjust the length of the support by friction. The venting or folding of the umbrella is initiated by opening the air chambers via a control disc which blocks the outlet cross-sections in each position and thus seals them or releases them and allows the air to escape. The umbrella is used as an air pump when folded up with the protective cover pulled on. To extract compressed air, the control disc must be turned to the appropriate position.

The advantages achieved with the invention are in particular that the air-filled, elastic strut chambers no longer pose a risk of injury. The tension of the umbrella roof is generated by a uniform line force introduced along the entire length of the strut chamber, which means significantly more favorable conditions for the service life of the umbrella compared to conventional umbrella skin fastening. There is also variability in the umbrella length. The umbrella-pump combination

® is particularly beneficial for cyclists. They can also attach the umbrella to their bike, which increases safety when riding in the rain. For larger parasols, the principle of the invention saves weight because the metal bracing spokes are not used, which makes transport to the lawn or the beach much easier.

An embodiment of the invention is shown in the drawings Fig. 1,2,3,3.a,3b and 4.

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I Figure _v.1 shows below, the top view of the umbrella roof (1)

I tilt the bracing bar ^"ju.The main view above represents

&igr; the section (AA) through the umbrella roof (1) and the support (3)

by integrating the pump (4)* The main elements of the pump (4) j such as the piston (7) i are clearly visible

1 of the piston rod (5)> the suction valve (9) in the piston bottom

the check valve (1ü) at the pump outlet to prevent

of the return of the air from chamber (15) or the bracing chambers (2). The air is forced through the piston (?)

<■■ and the piston rod (5) is sucked in via the handle (8a),

which is why the handle (8a) was provided with a hole (16).· i| For stepless fixing of the piston rod (5) and thus for

The aim of the study is to develop a holistic approach to the study of

An externally conical sleeve (6a) is slidably mounted on the piston rod (5) which, when pushed into the internally conical counterpart (6b), ensures a frictional connection by elastic deformation of the inner bore. The venting element (12,13,H) and the compressed air connection (17) are mounted on the front end of the rod.

The bracing chambers are, as can be seen from the open i

Position of the check valve and the closed

I position of the intake valve, inflated»

f Figure 2 shows the function of the conical sleeve (6a) I with the internally conical counterpart (6b) when attaching the piston rod (5). The attachment part of the piston rod (5) in this picture is a pointed rod (8b), which also has the necessary holes

(16) for air intake.

^ Figure 3 shows, compared to Figure 1, the venting element (12,13,14) and the compressed air connection (17) in two enlarged views. The venting element consists of

a control disk (14) which has two opposing circular sector-shaped passage cross-sections (18). The disk (14) is firmly connected to a rotary knob (12) via a shaft and has an opening and sealing function. There are also two passage cross-sections (19) in the front-side support wall (13).

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same shape, size/ulid: Sjloiaming &iacgr; PiS Top view shows the position of the two pairs of surfaces (18,19) to each other. They are offset by 90° and the contact surfaces of the control disc (14) and the contacting inner support wall (13) create a seal to the outside. This control disc position is set to inflate the compression chambers (2).

Figure 3a : Here the control disk (14·} has been rotated further approximately clockwise compared to the first position. An opening cross-section (18} of the control disk (14) is now located below the compressed air connection outlet cross-section (17), which allows compressed air to be extracted from the pump (4).

Figure 3b : If the control disk (14) is rotated by a further 45°, the wall (13) with the control disk (14) extends into the pump outlet chamber (15) or to the bracing chambers (2), which enables rapid venting of the bracing chambers.

Figure 4 : The bracing chambers (.2) are vented and covered by a protective cover (20). An intermediate piece (21) for compressed air extraction has been pushed onto the compressed air connection (17), the control disk is in the position shown in Figure 3a. The attachment part of the piston rod (5) in this illustration is a clamping device (8c), which appears to be suitable for fastening the umbrella to a bicycle.

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Claims (11)

Stuttgart, 20.6.1987 ,· : I' I &idigr;&iacgr; '· 'Britinder: Edeltraud Bosch-Sumser Enzstr. 34 7000 Stuttgart Schirm Schutzai-jsprüche 1) Umbrella for protection against rain, wind or sun characterized by that the collapsible umbrella roof (1) is supported by integrated, compressed air-filled, airtight, elastic strut chambers (2) and that the support '3) of the umbrella roof (1) contains a piston pump (4)-, the pump outlet chamber (15) of which is through to the strut chambers (2) by means of holes (11) and that the bracing chambers (2) are connected to a venting element (12,13,14) and the pump (4) is equipped with a compressed air extraction connection (17) and that the piston rod (5) is provided with an attachment (8a, 8b, 8c) and has locking elements (6a, 6b). 2) Piston pump according to claim 1, characterized in that the piston (7) and the piston rod (5) are hollow on the inside and the attachment part (8a, 8b, 8c) of the piston rod (5) has at least one through-bore (16) to the environment. -1- 3) Piston pump according to claim 1 , characterized in that the piston (G) ^has an air valve (9). 4) Piston pump according to claim 1, characterized in that a check valve (10J) is arranged in the wall to the pump outlet chamber (15)» 5) Piston pump according to claim 1, characterized in that the piston rod (5) can be locked in any position with the externally conical sleeve (6a) guided on the piston rod (5) in a frictionally engaged manner with the carrier end piece (6b) _which has an internally conical bore profile. 6) Ventilation element according to claim 1, characterized in that it consists of the frontal pump outlet chamber wall (13), which is provided with the passage cross sections &zgr; 19) and the Rotary knob (12J with control disk (14) fixed to it, which also has the same passage cross-sectional pattern (18) as the pump outlet chamber wall (13). 7) Compressed air extraction member (17) according to claim 1, characterized in that that the extraction of compressed air is determined by the position of the control disc (14) and the extraction of compressed air to the consumer is made possible by an intermediate piece (21) that can be attached to the extraction point (17). 8) Umbrella roof with bracing chambers according to claim 1, characterized in that that a protective cover (20;) is put on to cover the same after it has been ventilated. 9) Attachment of the piston rod (5) according to claim 2, characterized in that this is a handle (8a). -2- 10) Annex to the .tioj,bensiiä!nge ⁴ (5,)" according to claim 2 I III « I III · i 1 characterized by the fact that it is _, among other things, a rod with a conically tapering blank piece (8b ₎ . 11) Attachment part of the piston rod (5) according to claim 2 characterized in that it is a clamping device (Sc). -3-