DE2165818A1 - Disposable umbrella - Google Patents

Description

NAKANIHON SANGYO COMPANY LIMITED 8-25, Marunouchi 2-chome, Naka-ku, Nagoya, JAPAN

Disposable umbrella

For this application, the priorities of Japanese Utility Model Application No. 45-141625 dated Dec. 30, 1970, No. 46-35512 of May 4, 1971, No. 46-35513 of May 4, 1971 and No. 46-35514 of May 4, 1971.

The invention relates to a screen for single use or, if necessary, multiple use, the of simple construction is made essentially of plastics such as synthetic resins, and that in the Mass production can be made at a low cost.

The parts forming the skeleton of an umbrella are general in the known embodiments made of metal, so that such umbrellas are correspondingly solid in their construction and consequently remain durable and usable for a long time. However, this type of umbrella is relative expensive and therefore not suitable for purchase

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houses, bars, train stations or the like to be freely available to the existing walk-in customers.

The invention is therefore based on the object of providing a single-use, disposable umbrella which is extremely cheap to manufacture, so that it can be used as a gift for a clientele or the like can serve in order to be able to use it for a limited time.

The solution to this problem is to create a very simply constructed umbrella that can be used in both the is effectively functional when folded as well as in the unfolded state. Such a screen is extraordinary easy to manufacture, being particularly advantageous for mass production. In order to Such an umbrella is well suited to be used in department stores or the like as a gift for customers serve, especially since it can be produced very cheaply in very large quantities in a short time, which is the case with the conventional Umbrellas are not the case, and it is also suitable for a rainstorm sufficient To oppose resistance, although it is characterized by an extremely simple structure.

209831/0060

The features and advantages of the invention are as follows described in more detail with reference to the accompanying drawings, which represent, for example, embodiments, and it means:

1 shows a cross section through a first preferred one Embodiment of a screen according to the invention in the unfolded state,

FIG. 2 shows a perspective illustration of the upper section of the umbrella shaft of the embodiment according to FIG. 1,

3 shows an enlarged side view of the fastening means for the spokes of the umbrella according to FIG Fig. 1,

Fig. 4 is a plan view of the means of Fig. 3,

5 shows a partial representation in cross section of a fastening element of the screen according to Fig. 1 in the peripheral edge guide of the waterproof Overlap at the outer end of a main spoke or strut,

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Fig. 6 is a cross-section along the line A-A of Fig. 1;

7 shows a vertical section through a second preferred one Embodiment of an inventive Umbrella in the unfolded state,

8 shows a cross section through a third advantageous embodiment of a screen according to the invention in the unfolded state,

Fig. 9 is a section along the line B-B of Fig. 8, and

10 shows a representation corresponding to FIG. 4 of a modified one Shape of the element shown in FIGS. 3 and 4.

As can be seen, a first preferred embodiment is shown in FIGS. 1 to 6 of the drawings Screen according to the invention shown. The actual umbrella stick or shaft 1 is hollow and in the essentially of rectangular cross-section, it is preferably made of a plastic or of synthetic resin. The shaft 1 has a slot

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or gap la, which extends with a predetermined length from the upper end of the sheep slice 1 down to an intermediate position extends towards, running along the center line of one of the side walls. A round one, with Hook-provided part 2 made of synthetic resin is provided with a hollow rectangular shaft 2a which extends in a downward direction away from the center thereof. The shaft or shaft stub 2a is in the upper end of the longitudinally through the screen holder 1 through hole or a corresponding one Cavity 23 introduced and thereby holds the part 2 in the required position on the umbrella pole or shaft 1. Six identical hook-shaped noses 2b provided at constant intervals from one another protrude in the radial direction from the peripheral edge of the part 2 in the manner shown. A cylindrical one Sliding element 3 made of synthetic resin of relatively short length, is displaceable around the circumference of the shaft 1 arranged and thus fitted to this and in the longitudinal direction to this through a recess 4, which preferably corresponds in cross section to the profile of the corresponding section of the shaft 1, guided ^. A hook-shaped projection 5 extends from the lower edge of the displaceable element 3 in the inward direction and can fit in the slot la of the shaft 1

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ORlGlNAL INSPECTED

to be slidably moved, the hook-shaped projection 5 into the cavity 23, which is located within the Shank 1 is located, extends.

Six joint pieces 6, arranged at the same distance from one another, point outward in the radial direction from the upper section of the sliding element 3. The joint pieces 6 are each provided at one of their ends with an essentially flat end extension 7, by means of which the relevant piece 6 can be hung on or in the sliding element 3. Underneath each of the six articulation pieces 6, a projection designed as a hook element 3 a is provided, the hook-shaped projection protruding radially out of the sliding element 3. Each of the six hook portions 3a is used to attach a ι end of a cord 8 or the like, the screen is fixed with its other end at a suitable location of an associated 'main memory 10th If the umbrella is in its deployed position, are

the six bands or cords 8 are taut and prevent upward movement of the spokes 10 over a preferably horizontal position in which the umbrella spokes are held for use of the umbrella Need to become. Each joint piece 6 has an outer portion 9 with a bore 11 or a

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corresponding cavity is provided in which a corresponding main spoke 10 is introduced. At the outer surface of the sliding element 3, a stop 12 is provided, and between each two adjacent, i.e. adjacent articulation pieces 6, these stops serve for lateral alignment and retention the pivoting movement of the hinge elements 6. The outer end of each main spoke 10 is in the interior of a Perforation 13b of a corresponding fastening element made · The fastening elements 13 also exist made of synthetic resin and each of these elements has a circular recess or groove 13a which around the preferably round central section. (See Fig. 5.) A waterproof cover 14 is drawn and held over each edge of each fastener and each of the peripheral edge portions the waterproof shielding surface 14 is held in an associated annular groove 13a by the latter. An annular insert 15 is provided with a recess guided around the circumferential surface and is inserted into the annular recess 13a used. Here, the circumferential recess is in engagement with a circular projection on the inner surface of the recess 13a, whereby the connection between the fastening part 13 and the waterproof cover or umbrella tarpaulin 14

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-8-is assured.

The center, i.e. the middle section of the impermeable Cover 14 is received by a longitudinally extending perforation 2c through the hollow shaft stub 2a of the hooked part 2 is formed. A cup

part
shaped / 16 with the insert 16a extends from the center of said part in the manner shown (see Fig. 1) down into the hollow shaft 2a and engages over the waterproof shielding material 14, which is suitably held by the insert 16a. A handle 17 made of synthetic resin is fitted around the lower end of the shaft 1 thereon. A knob or end piece 18 is provided with a hook 18a in the manner shown in FIG. 1 and this knob closure 18 is attached to the lower end of the handle 17. The hook 18a protrudes into the handle 17 and from it into the shaft 1. A band or cord 19 made of rubber or another elastic material is stretched between the end of the hook 18a and the hook-shaped end section 5 of the sliding element 3.

Each of the main spokes 10 is provided with a small notch 20 between its ends, with a

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Tape or cord 21 made of rubber or other elastic material between the notch 20 and the hook-shaped projection 2b of the part 2 provided with the hooks tensions · A locking ring 22 is sliding closely fitted to the shaft 1 and leading around it and serves to hold the outer ends of the Main spokes 10 within their flanges 22a when the umbrella is in its closed position. However, when the umbrella is open, the spokes 10 are in a substantially horizontal position or in other words preferably perpendicular to the shaft 1, i.e. to its longitudinal axis. The cords or Straps 8 are tightly tensioned and prevent the rotation of the main spokes 10 in an upward direction; seal, what else occur through the tension of the elastic resilient members or through the action of wind and the like could. The sliding element 3 is pressed down by means of the elastic bands 19, which between the ken 5 and the hook-shaped end portion 18a are stretched, the hook-shaped end 5 of the slidable Element 3 rests on the lower end of the slot ^ la of the shaft 1. The one impermeable to water Screen 14 is in its middle section by means of the cup-like insert 16 and the hook provided part 2 held. The six peripheral edges

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Sections of the screen cover 14 are held securely by means of the fastening pieces 13 and the inserts 15, so that the umbrella is well suited to withstand strong pressure fluctuations caused by gusts of wind and rain.

When the displaceable element 3 is manually moved in an upward direction along the shaft 1, namely in Overcoming the tension of the spring cord 19, then the umbrella folded. Since the main spokes 10 are initially opened by means of the flanges 22a of the ring 22 are prevented, the screen remains in its folded position. If according to the ring is moved downwardly along the shaft 1 to expose the outer ends of the spokes 10, i.e. except Bringing engagement with the ring 22, the umbrella opens automatically. It should be mentioned that the Cords or straps 8 through flexible metal wires or the like for holding the spokes 10 in their preferably horizontal position can be replaced, this horizontal position taken when using the screen · The lower ends of the elastic bands can be attached to the outer ends of the main spokes 10 rather than being attached at an intermediate point as shown. the

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Cords 21 can also be omitted without affecting the functionality of the screen in the inventive Structure would be fundamentally changed.

Another preferred embodiment of an inventive The screen is shown in FIG. The umbrella stick or shaft 1 also consists of one Hollow member with a rectangular cross-section made of synthetic resin - A round anchoring part 35 made of synthetic resin has a hollow rectangular guide 35a, which as anchoring in a downward direction from the center of the lower surface of part 35 into the upper end of the longitudinally extending cavity 23 of the shaft 1 can be inserted in the manner shown.

A cylindrical sliding member 30 of ^{considerable:} Licher length of synthetic resin having a Achslochung j 4 of preferably the same cross section as the Außenquer4 section of the shaft 1, engages snugly the shaft 1 to be displaced telescopically slide on to this. The length of the element 30 is only insignificantly longer than that of the shaft 1. Six joint parts 6, which are arranged at the same distance from one another and of the same type, point radially from the upper end of the displaceable

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Element 30 to the outside, whereby they by means of their substantially and preferably flat end portions 7 are held on the element 30. Six also in the same Hooks 3 a spaced from one another protrude radially out of the displaceable element 30, whereby they lie between the ends of the same, in such a way that in each case a hook 3a is exactly below the associated joint part 6 lies. One end of a band or a corresponding cord 8 is hooked into each hook-like element 3a, which is attached with its other end to a suitable location of a corresponding screen spoke 10 is. The cords 8 are tightly tensioned when the umbrella is in its open position, whereby they prevent further upward rotation of the spokes beyond the substantially horizontal Position would go out. A perforation 11 is made in the outer end section of each of the joint parts 6, which serve to receive the inner ends of the associated spokes 10 of the umbrella.

A stop, not shown, is on the displaceable element 30 between two adjacent Ge ' steering parts 6 attached, whereby the lateral tilting movement of the joint pieces 6 limited accordingly will. In the lower area of the displaceable part 30, a shoulder 31 is provided on one side. The outer

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The end of each main spoke 10 is from the inner cavity 13a of an associated fastening piece added and the waterproof canopy 14 is secure by the inserts 15 in the already kept in connection with the first embodiment described manner. The anchoring approach 35a is inserted into the upper end of the perforation 23 of the shaft 1 and the middle section of the water-impermeable Cover 14 is pressed into the perforation 35b of the shaft-like extension 35a and it is held here by means of a cap 16, the lower sufficiently protruding portion 16a in the Shank 35a is introduced. A handle 32 is fitted around the lower end of the shaft 1 and an elastic hook member 33 made of synthetic resin is provided with an upper hook-shaped end 33a and secured on one side of the handle 32 between the front end portions. A locking ring 22 is pushed over the shaft 1 in a snug fit and slides on it between the ends slidable and holds the outer ends of the main spoke 10 in the flange portion 22a in the event that that the umbrella is in the closed position. A stop 34 on the shaft 1 in the vicinity the upper end of the same prevents the excessive

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Upward movement of the displaceable element 30 along the shaft 1 when the umbrella is closed

The cords 8 can be replaced by flexible metal wires or other appropriate materials; they are between the hook-like elements 3 a of the displaceable part 30 and the main spokes 10 taut and act a further upward rotation of the spokes 10 on the substantially horizontal position with the umbrella open, opposite. If the sliding element 30 is down is moved until it abuts against the upper end of the handle 32, the hook-shaped end 33a engages of the hook member 33 into the lower protruding end 31 of the sliding element 30, so that the the latter element 30 is prevented from moving upwards and the screen is not thereby can close. The waterproof shield 14 is secured in the middle section by the cap 16 and the hooked block 35 held while it is at the six peripheral edge portions by the Mounting pieces 13 and the inserts 15 is attached, so that the umbrella is subjected to heavy pressure loads from rain and can withstand wind.

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The umbrella can be brought to the fully closed position when the hook element 33 is disengaged with the lower end of the displaceable element 30 or with its extension 31 and the displaceable element 30 is pushed manually along the shaft 1 in the upward direction until it rests against the stop 34 comes, which is provided adjacent to the upper end of the shaft 1. The outer ends of the umbrella spokes 10 are then to be anchored within the flanges 22a. When the umbrella is to be opened, the ring 22 is with its flange 22a pushed down and is the outer ends of the spokes 10 free. Now one takes place Displacement of the element 30 until the hook element 33 comes into engagement with the projection 31, the lower End abuts the upper end of the handle 32, i.e. is in abutment therewith.

It should be mentioned at this point that the hook attachment 31 at the lower end of the displaceable element 30 can also be provided at the upper end of the handle 32, while the hook 33 now located on the handle 32 instead, it can also be attached to the lower end of the displaceable element 30. About that

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In addition, it can be useful to have stop means to limit the movement of the displaceable element provide, which lie either in the upward or in the downward direction along the shaft 1, during the Umbrella is open.

Referring to Figures 8 and 9 of the drawings, there is a third preferred embodiment of one in accordance with the present invention Screen shown. The shaft 1 of this umbrella is hollow and has a rectangular cross-section made of synthetic resin. He has a slot la of sufficient length, which extends from the upper The end of the shaft 1 extends down to a central section. The slot la is in Cut into the longitudinal direction along a side wall of the shaft 1. A relatively short one cylindrical member 3 made of synthetic resin and slidably mounted on the shaft engages around in a snug fit this around. The sliding element 3 is hollow on the inside, i.e. it has the perforation 4, which extends in the longitudinal direction runs through the element, this perforation preferably having the same cross-section as the shaft 1 has. The element 3 is provided at its lower end with a hook-like projection 5, through the slot la into the cavity, i. e.

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-17-the longitudinal bore 23 of the shaft 1 protrudes.

Six joint parts 6 arranged in the same way, i.e. at the same distance from one another, protrude in the radial direction from the upper part of the sliding Element 3 out, these attached parts 6 with their plates in the main or flat end portions 7 in the same way as in the above-described embodiments in the element 3 intervene. Each articulated part 6 is in the outer or in the. outwardly directed section 9 is hollow and has the perforation 11, which is the inner end of a corresponding strut or rib 10 of the screen. A stop, not shown, is at the upper end portion of the slidable Element 3 between each of the adjacent and distributed around the circumference suspended parts 6 available, whereby the lateral swinging movement of the joint members 6 when open Shield is limited. Six hook-like parts arranged at the same distance from one another around the circumference 3a stand out in the radial direction from the lower end of the displaceable element 3, these Parts 3a are each arranged under an associated joint part 6. Zn each of the hook-like parts 3a is one end of a cord 8 hooked with

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its other end at a convenient point of the associated spoke 10 of the screen is attached When the umbrella is in its open, i.e. unfolded position, the cords 8 are taut, with a further upward rotation of the screen spokes 10 from their essentially horizontal position, i.e. from a

ψ in a position perpendicular to the shaft 1 of the umbrella. The middle area of a water-impermeable screen covering 14 made of vinyl is pressed through an attachment 40 into the upper end of the longitudinal perforation 23 of the shaft j 1, while the six edges forming the circumference of the screening surface are wound up on the outer ends of the main spokes 10 ,respectively. be fastened by threading accordingly. As can be seen from FIG. 8, the cap 40 has an approximately curved hook 40a which protrudes downward on the underside. A handle 42 is disposed around the lower end of the shaft 1 and fitted on it. The diameter of the handle 42 increases towards the section 42a, that is to say towards its lower end, and a perforation 43 extending through it in the axial direction as well as a slot-like passage 44 which is connected to the bore 43,

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are introduced into the handle of the umbrella in the manner shown in FIGS. 8 and 9. Even shows the end face of the end face a substantially hemispherical recess 45, which in the end area of the slot 44 is arranged. The inwardly curved groove 45 is used for receiving a spherical locking element 46 in the area of the narrow slot guide of the through-tube 43. A cord 47 is attached with its lower end to the spherical lock 46, while you the upper end is hooked into the hook attachment 5 of the displaceable element 3. The lower end of the Locking ball 46 is via a cord 48 or the like connected to a pull ring 49. A cord 50 or a corresponding elastic band or a braid Another elastic material is between the hook 40a and the hook-shaped extension 5 of the sliding element 3 tightened and hereby pushes the displaceable element 3 in the upward direction, while the Cord 47 holds the element 3 pulling downwards. The lower end of the sliding element 3 is very close close to the lower end of the slot la of the shaft in the manner shown. A stop 34 that is provided adjacent to the upper end of the shaft 1, prevents excessive upward movement of the

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Sliding element 3 when the umbrella is closed. A locking ring 22 is slid over the shaft 1 in a snug fit and in this case between the displaceable Element 3 and handle 42 placed in position · The annular flange 22a of the ring holds the outer ends of the spokes 10, over which it is pushed, together in the closed state of the umbrella.

In the open state of the umbrella, the spokes or struts 10 are essentially - as shown horizontal and the cords 8 prevent further upward rotation of the spokes 10 beyond this position beyond what could occur on the screen tarpaulin 14, for example, due to the influence of wind. The sliding one Element 3 is continuously pushed in the upward direction, which is done by the elastic cords 50, while the cords 47 a tension between the hook attachment 5 and thus the sliding element 3 and the spherical stop 46 maintained, which in the recess 45 at the lower end of the handle 42 is snapped in, so that this in turn limits the upward movement of the displaceable element 3 will. The lower end of the element 3 is therefore very close to the lower end of the slot 1 a of the shaft 1

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at. The tension of the screen cover 14 prevents the spokes from rotating downwards, i.e. from folding together 10. The screen designed according to the invention reflects This means that there are also strong pressure fluctuations caused by wind and rain.

If you want to close the screen, the pull ring 49 against the force of the elastic Tape 50 are pulled to move the catch 46 out of its recess. The lock can then move through the bore 43 in the handle 42 - as shown in dash-dotted lines (see Fig. 8), but this is only possible after the pull ring 49 has been loosened. Moved at the same time the displaceable element 3 moves upwards, which is triggered by the contracting force of the cord 50 until it comes to rest against the stop 34. The outer ends of the spokes 10 are held together by means of the ring 22. On the other hand, if you have the umbrella closed in this way open, i.e. unfold, the outer ends of the webs or spokes 10 must be released from the locking mechanism of the Ring 22 can be released by pressing against the ring 22 in the downward direction and the catch 46 must be pulled out of the bore by exerting a tensile force on the pull ring 49 in order to

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arched recess 45 can be snapped into place. After the locking ball 46 has been pulled out of the bore 43 has been, it must for this purpose in the manner shown in Fig. 8 slightly to the left be pressed. As soon as the movable element 3 has been pulled into its lowest position, the umbrella is open. Of course, it is possible to use flexible metal wires to connect the cords 8 or to replace corresponding aids that are suitable for the upward pivoting movement to limit the spokes 10 in a suitable manner, so that they are preferably in a horizontal Position the umbrella open.

With reference to FIG. 10, it is worth mentioning that the cords or straps 8 or corresponding auxiliary means also omitted in the embodiment shown can without jeopardizing the functionality of the umbrella. In particular

this would also be a further upward one Pivoting movement of the spokes 10 is not possible, especially when the stops 12 are sufficient resistant and large - as shown in Fig. 10 are designed. The stops 12 limit the lateral Rotational movement of the suspended joint parts 6, the spokes 10 having a sufficiently large bending

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have strength. In this context it is also of interest that if one of the Spokes 10 would be pressed upwards by the action of wind or the like, the water-impermeable The screen cover 14 of the screen would tend to cause the adjacent ribs or spokes to retract in the required position, especially if there is sufficient flexural strength the spokes is present. The sufficient flexural strength of the spokes thus affects both of them upward movement as well as possible lateral movements of the spokes from the illustrated, preferably horizontal, opposite position.

According to what has been said above, the invention thus relates to a screen, which may be used once Use can be thrown away, but can also be used several times, and which consists of a hollow umbrella shaft or shaft, and which is also a movable element, which is fitted to the peripheral surface of the screen and along this over a certain distance can slide, means projecting radially outward from the upper portion of said element and the Attachment of spokes or bars for the umbrella are used, aids for locking and holding

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of the displaceable element in a lowermost position along the shaft, in this Position the umbrella is in its open position, i.e. in the deployed state of use is, means for limiting and preventing further upward movement of the spokes from the im essential horizontal position and means of fastening the central area of the impermeable Screen overlap at the uppermost end section of the shaft.

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Claims (11)

-25 PATENT CLAIMS ^ Disposable umbrella consisting of a combination a plurality of webs or spokes (10), one stretched over the spokes and attached to them waterproof cover (14), a hollow umbrella shaft or shaft (1) with an in Longitudinal direction through this running perforation or bore (23), one at the lower end of the shaft (1) attached handle (17), a sliding element (3) held displaceably along the shaft (1), a plurality of equidistantly arranged and in the radial direction from the upper end of the sliding element (3) protruding hinge parts (6) that accommodate and hold the inner ends of the Spokes (10) serve, further from means that prevent the screen from closing when dier is in the open position, from means for limiting the upward movement of the spokes over the in the opened state of the screen, the same is in a substantially horizontal position, means for fastening the waterproof coating on the shaft and means for holding the waterproof Overlap on the spokes -26- 209831/0050 2. Device according to claim 1, characterized in that that the shaft (1) has a longitudinally extending one introduced into a side wall thereof Slot (la) has that the sliding element (3) has an inwardly projecting hook-shaped end projection (5) which passes through the slot (la) into the cavity (23) of the shaft (1) protrudes, and which is able to slide along the slot (1). 3. Device according to claim 1, characterized in that that the means for preventing a possible closing of the screen is a hook-shaped one Include element (18a) which is provided on the handle (17, 18) of the umbrella and which is in the The lower end of the perforation (23) extending in the longitudinal direction of the shaft (1) protrudes, with a elastic cord (19) between the hook-shaped element (18a) and the inwardly extending one Hook attachment (5) of the sliding element (3) is tensioned. 4. Apparatus according to claim 1, characterized in that the sliding element (30) consists of an elongated cylindrical body, which in its length -27- 209831/0050 a little shorter than the stem (1) itself is that the means to prevent accidental Closing the umbrella from a hook-shaped extension (31) pointing in the outward direction at the lower end of the sliding member (30) and a hook (33) which is provided on the handle (32) and which is connected to the radially outwardly extending hook-shaped projection (31) can be brought into engagement. 5. Apparatus according to claim 1, characterized in that the means for preventing the folding up or closing the screen from an inwardly extending hook-shaped end projection (5) on the sliding element (3) and one with its upper end on the inwardly extending hook-shaped end projection (5) of the sliding element (3) attached, down through the longitudinal bore of the shaft (1) and through a Gap (44) running within the umbrella handle (42) Cord (47) ^ which has a spherical locking element (46) at its lower end, consists, wherein the locking element in a curved recess (45) in the bottom end face of the Umbrella handle (42), which is in connection with said slot, can be introduced. -28- 209831/0050 6. Apparatus according to claim 1, characterized in that the means for limiting the upward movement of the webs or spokes (10) a plurality of prestressed at the lower end of the sliding element (3) Hooks or lugs (3a) and a multitude of cords (8) that form a connection between the hook-shaped Create approaches (3a) and the spokes (10) have. 7. Apparatus according to claim 5, characterized in that means for automatically closing the screen are provided, which consist of a radially inwardly extending hook-shaped Eodansatz (5) on the sliding element (3), a hook-shaped approach formed on the bottom or the front end face of a cap (40) (40a), the cap (40) in the middle section of the water-impermeable cover (14) is fixed in the upper end of the shaft (1) that an elastic cord element (50) between the hook-shaped extension (40a) and the inwardly directed extension (5) of the sliding element (3) is tensioned, that a continuous perforation (43) through the handle (42) for the free passage of the spherical Lock (46) is provided which is connected to a gap (44) of the handle (42) that a -29- 20 9 831/0050 The pull ring (49) is connected to the spherical lock (46) via a cord (47) or the like, wherein the screen is automatically closed immediately when the pull ring (49) is pulled down and so that from the curved recess (45) on the underside of the handle (42) is removed to through to get to or into said perforation (43). 8. Apparatus according to claim 1, characterized in that the means for fastening the water-impermeable Cover (14) on the spokes (10) consist of a plurality of fastening parts (13), which can be fitted onto the outer ends of the spokes (10) and of a variety of inserts (15) which are fitted into the fastening parts (13) so as to form the waterproof coating (141 to be secured to the fastening parts (13). 9. Apparatus according to claim 1, characterized in that an annular lock (22) is displaceable and is arranged in a snug fit directly around the shaft (1) or around the longitudinal displacement element (30) which the outer ends holds the spokes in the closed state of the umbrella. 209831/0050 10. The device according to claim 1, characterized in that that the sliding element (3) is made of synthetic resin, and that a stop (12) on the outer peripheral surface of the sliding element (3) between two hinge elements (6) at the same distance from one another is arranged, this radially outwardly extending aid to limit the Form lateral pivoting movement. 11. The device according to claim 1, characterized in that that the shaft (1), the sliding element (3), the cap (16 or 40) and the tools for fastening the waterproof screen cover (14) on the spokes (10) made of synthetic resin. Patent attorneys Seiler and Pfenning 209831/0050