DE1939749A1 - Automatically opening umbrella - Google Patents

Description

Dr. Ing. E. BERKENFELD · Dipl.-Ing. H. BERKENFELD, patent attorneys, Cologne

Attachment file number

for input of AUGUST 4th 1 9 ^ 9 Sch // name d. Note: Ideal StlOJl Co. Ltd.

Automatically opening screen.

The invention relates to an umbrella, namely an automatically opening umbrella. The invention particularly relates to one Umbrella that not only opens automatically when a button attached to the vertical shaft is pressed to allow the intervention between a movable lower ring carrying the non-stretchable support spokes and a hook, but with which also maintains the tension or tightness of the spread fabric of the screen when the fabric is wet and becomes limp.

In the case of an automatically opening umbrella, in which the ribs are opened outward in the radial direction by the interaction of the spring force which is produced by a compressed spiral spring arranged around the hollow vertical shaft adjacent to the lower end of a stationary ring attached to the upper part of the shaft is exerted, with the compressive force exerted by pressure parts pivotably connected to a sliding middle ring arranged on the hollow vertical shaft, when the lower sliding ring arranged on the hollow vertical shaft is out of the state of locking duroh one at the lower end of the hollow vertical Shaft arranged pawl is released. The invention is to be seen in the arrangement that each spring-loaded, extendable strut, which is pivotally attached at one end to the middle ring, which is slidably arranged on the hollow, circular base, at the other end to a pin of a connection aatUoke (solidly pivotable

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is attached, which is attached to the central part of the rib, while each inextensible support spoke at one end at the lower Ring is pivotally attached, which is slidably mounted on the shaft, and at the other end to another Pivot is pivotally attached, which is spaced from the first pivot and is arranged in the same connecting piece, so that the extendable strut and the inextensible support spoke are pivotally attached to two pins, which are spaced from each other lie. This formation of the Schierme fulfills the following task: If the fabric, which is made of a material such as nylon, and which covers the entire upper surfaces of the ribs, gets wet in the rain, after the umbrella is opened, the fabric takes Moisture on. The same thing expands and loses you Part of his initial tension. The retractable strut will then automatically caused to increase their length by a piece to the ribs to a small extent further in the radial direction to spread outside. At the same time, the sliding lower ring caused to move up the hollow vertical shaft a little by pulling the ring from the support spokes upwards which also pull the ribs inwards. The limp one The fabric of the umbrella therefore regains its initial tension, so that the fabric is taut. That way you can the umbrella always retains its good looks after it has been opened, so that the fabric can be removed regardless of the Weather, rain or shine, does not go limp.

The subject of the invention is an automatically opening slime with a vertical shaft which is provided with a sliding lower ring , which carries several support spokes for supporting the ribs concerned, with a pawl located in the lower part of the shaft , which is connected to the sliding lower ring in Engages and locks the same when the umbrella is closed with a central ring slidable on the shaft, which carries a plurality of pressure parts which press the ribs in the radial direction outward and which are arranged so that they are supported by a on the shaft above the middle ring and underneath a fixed ring supporting the ribs, the compression spring can be pressed so far down that the umbrella is completely opened. The screen iat according to the invention

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characterized by a spring arranged on the pressure part, which the length of the pressure part is increased so that it presses further elastically on the corresponding hip, by means of one on the rib attached connector, which has two spaced pins for the pivotable attachment of the support spoke and the Pressure part at a distance and independent of each other, so that the pull-out Pressure part, the rib presses independently of the inextensible support spoke in the radial direction outward, so that the open The umbrella holds the tensioning element when it is taut holds without causing a slackening of the fabric that adheres to the expansion of the same in the wet state.

Further features and advantages of the invention emerge from the the following description with reference to the drawings, in which shows:

Fig. 1 schematically shows a vertical side view, partially on average, showing the relative positions and the Connections of the components of the umbrella frame according to the invention illustrates, when the screen closed is,

Fig. 2. a similar view if the screen is for the . ■: · ■ use is in the open position,

• Fi'g », - ·>. . on a larger scale schematically, partly in -v -, -. ■■■ .-. Section, a partial side view of the umbrella -.; - ■■ -. . -stells of Figure 2, illustrating the state in which the springs concerned zusammenge- -. when the open screen is about to be pushed

is to · to be closed by lowering the on the hollow. 'right shaft of the umbrella slidable lower ... .. ring out of the position which the same at the time occupies, in which the screen is in the open division, is lowered,

Fig. 4 on a larger scale schematically, partly in section, , -.....- a partial side view of the umbrella frame according to Fig. 2, which illustrates * how the erför- I 41/1 ^ J-

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the initial tension of the fabric of the The umbrella is restored in the open position of the same by the ribs are slightly bent outwards after the fabric because of the uptake has lost part of its initial tension from moisture,

Fig. 5 schematically on a larger scale, a partial side view, which illustrates how that near the top of the hollow vertical shaft The fixed ring attached to the umbrella by a spiral spring with the movable middle fc ring is connected, which is below the stationary

Ring and is arranged on the vertical shaft,

6 is a perspective view of the displaceable middle ring,

7 is a perspective view of a guide rod,

8 is a perspective view of a modified embodiment the guide rod,

9 shows a vertical side view on a larger scale, which attached the to the vertical shaft

Guide bar illustrates

10 is a perspective view of an extendable strut,

11 is a perspective view of a modified embodiment the extendable strut.

In the drawings, 1 denotes a hollow vertical shaft, which in the illustrated embodiment consists of a tube. The upper end of the vertical shaft 1 is with a Ferrule 1a provided. On the lower end of this ferrule la is a

Fixed ring 2 attached »From the fixed ring 2 extends 41/1 -4_

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a plurality of ribs 3 in the radial direction, the upper one The end of each rib is pivotally attached to the stationary ring 2. A connector 4 made of metal, which the Pig. 10 shown Shape is attached to a central part of each rib 3 * The connecting piece 4 made of metal has a generally semi-cylindrical shape and is provided with lugs 4a, 4b, which from the middle parts of the longitudinal edges on both sides protrude so that the insides of these approaches face one another. Between the opposing lugs 4a, 4b pins 5a, 5b are attached in such a way that they are at a distance in front of them. One Sleeve 6 is pivotally attached at one end to one pin 5a. The end part of a rod 8 is freely slidably inserted into the sleeve 6 through the other open end, around its circumference a coil spring 7 is wound. The other end part of the rod 8 is freely slidably inserted into the open end of another sleeve 9, the other end of which is pivotably attached to a central ring 10, which in turn is mounted on the vertical shaft "1 is arranged displaceably. The spiral spring 7 extends between the opposite free ends of the two sleeves 6 and 9. ■

A modified embodiment of the spring-loaded retractable Strut consists of a single sleeve 6, one end of which is pivotally attached to the pin 5a, and a rod 8 to which a spiral spring 7 is wound and which is located between the free end of the sleeve 6 and the displaceable central ring 10 extends, one end part of the rod 8 being freely slidably inserted into the open end of the sleeve 6, while the other End of the rod is pivotally attached to the sliding middle ring 10, like Pig. 11 shows.

As shown in Fig. 1, a compressed coil spring 11 is from corresponding length on the hollow vertical shaft between the lower end face of the stationary ring 2 and the upper end face of the slidable central ring 10 arranged so that it can expand between the same.

Of course, the pivotable sleeves 6 and 9 can go through

a.cylindrical part or parts are replaced, provided that χ 4T / 1. XiOl) \ * i:>Z-J'J -5-

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that the rod ο for a sliding movement in the cylindrical Part or parts can be introduced.

An inextensible support spoke 12 is pivotally attached at one end to the other pin 5b of the connecting piece 4. The other The end of the support spoke 12 can be pivoted on a lower ring 13 attached, which is arranged on the hollow vertical shaft 1 displaceably. A pawl 14 is inside the hollow vertical Shaft 1 is provided in the lower part of the same, which is close to the handle 1b of the umbrella frame. In the illustrated Embodiment consists of the pawl 14 from a curved Leaf spring, from the lower end of which a push button 14a to the outside protrudes and which is also provided with an outwardly protruding hook 14b which is at a corresponding distance from Push button 14a lies. The hook 14b and the push button 14a protrude usually through a narrow longitudinal slit outwards, which is in the wall of the hollow vertical shaft 1 on one side of the the lower end of the same is formed. The slot and the leaf spring are of such a size that the leaf spring is always within of the hollow vertical shaft 1 is held.

The slidable lower ring I3 has such a shape that a hollow cylindrical part extends downward from the ring part, at which end of each support spoke 12 is pivotable is attached. The hollow cylindrical part of the sliding lower Ring 1j> is provided on one side with an elongated slot 13a. This slot 13a of the cylindrical part of the sliding lower ring 13 is arranged so that the same with the The narrow slot formed in the hollow vertical shaft 1 is aligned when the sliding lower ring I3 is down is pulled to cover the latch. The slot 13 ^ has of such a size that the hook 14b of the pawl 14 can freely pass therethrough after it has come off has emerged through the narrow slot of the vertical shaft. Since the lower ring 13 * is slidable on the hollow vertical shaft I. is arranged, is pulled down on the same to a position near the handle 1b, the outwardly protruding hook 14b comes first with the lower end edge of the cylindrical

Part of the sliding lower ring 13 engages and is I 41/1 - ■ - "■. -Ü-

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then pressed inwards by this edge in order to be sunk into the narrow slot formed in the hollow vertical shaft 1 weden. "If the cylindrical part of the sliding lower ring 13 over the lower end of the hollow vertical shaft 1 is pulled further down past the recessed hook 14b, the latter is released from the acting pressure and protrudes through the narrow slot and then through the elongated slot 1 then outwards, which is in the cylindrical part of the sliding lower Ring I3 formed and at this moment with the narrow Slot is aligned. The protruding hook therefore locks the lower edge of the slot 1Ja in the cylindrical part of the sliding lower ring 13. » the upward movement of the ring 13 and to keep the umbrella closed.

At 15, a stop pin is referred to, which the lower end surface of the middle ring 10 is supported, which is slidable on the hollow vertical shaft 1, and which the indefinite Movement of the middle ring 10 is limited downwards. The sliding middle ring 10 can move under the action of Spring force of the compressed coil spring 11 on the hollow Move the vertical shaft 1 down until the lower end surface of the middle ring 10 abuts against the stop pin I5. Of the displaceable central ring 10 is provided with a vertical groove 16 on the inner wall of the central bore 10a. On the hollow vertical shaft 1 is a guide rod in a corresponding manner I7 attached so that the same in the longitudinal direction and in contact with the outer surface of the hollow vertical shaft 1 on one side thereof, from a slightly below of the stop pin 15 up to a point above this pin in the vicinity of the lower end surface of the stationary Ring 2 lying position. The longitudinal part of the guide rod I7 is inserted into the vertical groove 16, which is in the inner wall of the bore of the sliding middle ring 10 is formed so that the same on the hollow vertical shaft 1 is guided in a straight line in the longitudinal direction, without rotating around the shaft.

In the embodiment shown in Figures 1, 2 and 3 has the guide rod I7 has such a shape that the same opposite-I 41/1 -7-

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has low end portions which are at right angles to the perpendicular extending part of the rod are bent to two bent end parts, 17a (Fig »7) to form. This guide rod 17 is hollow vertical shaft 1 fixed by the curved end portions 17a inserted into the hollow vertical shaft 1 through the wall thereof are.

In FIGS. 8 and 9, a modified embodiment is shown Guide rod 17 shown, which at the lower end with a outwardly protruding curved part 17b is provided «In this Case, the outwardly protruding curved part 17b serves as a stop, about the indefinite sliding movement of the sliding middle ring 10 to restrict downwards. If this were to be abolished which guide rod is used, the stop pin 15 omitted.

On all of the outer or upper surfaces of the ribs 3 there is a cloth 18 arranged and attached, the cut in a shape and size and is stapled, which is somewhat smaller than the whole area of the conical shape which is defined by the outer or upper surfaces the ribs 3 is formed.

When the button 14a of the pawl 14 with the tip of a finger is depressed while the umbrella is closed, the sliding lower ring 13 from the state of locking to release by the hook 14b, the compressed spiral " spring 11 by its own spring force back into the uncompressed State. This force exerted by the spiral spring 11 presses the displaceable central ring 10 on the hollow vertical shaft 1 down to the stop against the pin 15. The spiral spring 7, which is arranged on the rod 8 (one end part of which is inserted into the sleeve 9, which is pivotally attached at one end to the sliding central ring 10, and the other end part of which is inserted into the sleeve 6 which is pivotably attached at one end to the pin 5a of the connecting piece 4 is, which is arranged on the rib 3) and which was previously compressed, can now by its own spring force stretch in the longitudinal direction. As a result, a larger piece of the opposite end portions of the rod 8, which I 41/1 -8-

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received in pods 6 and 9, from these two pods Approved. The sleeves 6 and 9 are arranged so that the rod 8 is not completely during the expansion of the spiral spring 7 is pulled out of these sleeves. The combination of the rod and the sleeves 6, 9 therefore exerts a powerful telescopic effect in order to increase the distance between the facing open ends of the two sleeves 6 and 9. This will make the Ribs 3 around the stationary ring 2 in the radial direction outward spread, which is arranged on the upper part of the hollow vertical shaft 1.

In a modified embodiment of the spring-loaded extendable strut, the rod 8 can be pivotably attached at one end directly to the sliding central ring 10, while the other end is guided into a sleeve 6, which in turn is pivotably attached to the pin 5a of the connecting piece 4. With this arrangement, which is described in Pig. 11, the telescopic action of the extendable strut is as follows: when pressure is applied to the button 14a to disengage the hook 14b from the lower edge of the slot 1Ja in the cylindrical part of the sliding lower ring 13, the sliding middle ring 10 lowered from its position on the hollow vertical shaft 1 by the spring force of the compressed spiral spring 11 to a height at which the lower end face of the displaceable middle ring 10 abuts against the pin 15. At the same time, the spiral spring 7, which is arranged on the rod 8 (one end part of which is freely slidably inserted into the sleeve 6 , which is pivotally attached at one end to the pin 5a of the connecting piece 4 of the rib 3), in the longitudinal direction in such a way expand so that the rod 8 is pulled a little out of the sleeve 6 in order to increase the length of the extendable strut. As a result, the ribs 3 around the stationary ring 2 are spread outward in the radial direction , while the support spoke 12, which is pivotably attached at one end to the pin 5b of the connecting piece 4, is caused to move the sliding lower ring 13 on the hollow vertical shaft 1 to pull up a certain street and stop at the end of this street.

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When the ribs in this way in the radial direction outwards are spread, the cloth 18 attached to each of the upper surfaces of the ribs J is spread accordingly. Together with the Spreading movement of the ribs j5 are the inextensible support spokes 12 (each of which is attached to one end of the pin 5a removed pin 5b of the connector 4 at a distance from the extendable strut and is pivotally attached at the other end to the sliding lower ring 15), the sliding lower ring 15 on the hollow vertical shaft 1 independent of the extendable Aim to pull up a certain distance, the ring 15 stopping after it has traveled that distance has to limit the spreading movement of the ribs in the radial direction outward. In this way the ribs are 5 in radial direction pulled somewhat inward by the inextensible support spokes 12, which are attached to the ribs via the pins 5b Connecting pieces 4 are connected. When viewed in the lateral direction, the ribs 3 accordingly become somewhat in a slightly arched shape curved outwards. The fabric 18 attached to all of the upper surfaces of the ribs becomes the maximum as a result Extent taut. In other words, the ribs 3 supporting the fabric are made to move close to the outside in the radial direction to spread into the position in which the tension of the fabric 18 is in equilibrium with the spring forces exerted by the spiral spring 7 wound around the rod 8, and by the spiral spring -11, which is on the upper part of the hollow vertical shaft 1 is arranged. This will automatically open the screen.

For some time now, many umbrellas have been using fabrics that are made of nylon. However, nylon fabrics have the property that they expand somewhat when they absorb moisture. If nylon fabrics are used for the known umbrella frames, it happens that the fabric is stretched taut before the rain was to expand a little when the fabric gets wet and Absorbs moisture, which causes the stretched fabric to loosen up and, accordingly, the loss of the good looks expected of the opened screen.

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According to the invention, the following advantage is achieved: when the taut fabric 18 of the opened umbrella as a result of expansion becomes slack due to the absorption of moisture, the spring force exerted by the coil springs 7 of the spring-loaded extendable Strut is exerted, which so far was in equilibrium with the initial tension of the taut fabric over which it is stretched the tension resulting from the stretched fabric will go out, or the springs will expand a certain amount. The length of the extendable struts therefore increases somewhat, so that the ribs 3 are caused to move slightly in radial direction Direction to spread further outwards in order to bring the slack fabric into the tensioned state, so that the opened umbrella always keeps its good looks.

In the umbrella according to the invention there is an inextensible support spoke 12 pivotally attached to the pin 5b of the connector 4 and to the sliding lower ring 1J. This arrangement acts as follows Way: When the ribs 3 are caused to move from the initially open position of the screen to a certain extent in a radial direction Direction to spread further outwards, in order to thereby fasten the connecting piece 4 in the middle part of the ribs 3 To move outwards to a small extent, the displaceable lower ring 13, which was previously on the hollow vertical shaft 1 was stationary and loose, moved up a certain distance on shaft 1 and stopped at the end of this distance, as in Flg. 4 is indicated by the dash-dotted lines. It should be noted that the spring-loaded retractable strut on one end is pivotally attached to the pin 5a, which between the opposite lugs 4a, 4b of the connecting piece 4 is arranged, while the inextensible support spoke 12 on a End is pivotally attached to the spaced other pin 5b, which is also between the opposite lugs 4a, 4b of the connecting piece 4 is arranged. This means that the spring-loaded retractable strut and the non-extensible Support spoke 12 start from different and spaced pins 5a and 5b. This novel arrangement of the pull-out Strut and the support spoke allows the following operation: when the connector attached to the middle part of the Ripp-3 4 experiences a shift towards aßen as a result of the stretching of I 41/1 ■ -11-

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extendable strut, which at one end on the one pin 5a of the spaced pin 5a, 5b is pivotally attached, is the inextensible support spoke 12 attached at one end to the other Pin 5b of these two pins is pivotally attached, a free one Swivel movement about this pin 5b perform to the sliding lower ring 13 on the hollow vertical shaft 1 for the purpose evenly upward movement until the tension of the fabric with the spring forces of the spiral springs in the Equilibrium is «This further radial spreading movement of the ribs 5 outwards from their initial open position, which was before The wetting of the fabric is therefore not hindered in any way and, accordingly, when the umbrella is open, the Maintain the taut condition of the fabric.

The connecting piece does not have to be made of metal, but can be made of an appropriate plastic material, which has great mechanical strength.

The invention is not limited to those shown and described Examples of embodiments limited, which can undergo various modifications without departing from the scope of the invention.

Claims

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Claims (1)

Ϊ939749 Dr. Ing.E. BERKENFELD. Dipf, -fng. H. BERKENFEID, Patent Attorney », KoIn Annex "file number for entry from AUGUST 4, 1909 Sch // Name of d. Note Ideal ShOJ i CO. Ltd « P at ent.a η s pi * ü e h e 1. Automatically opening screen with a vertical one Shaft which is provided with a sliding lower ring, which has several support spokes for supporting the ribs concerned carries, with a arranged in the lower part of the shaft pawl which engages with the slidable lower ring comes and locks the same when the umbrella is closed, with a middle ring slidable on the shaft, the several Carries pressure parts which press the ribs in the radial direction outward and which are arranged so that they by a on the shaft above the middle ring and below a fixed ring supporting the ribs, compression spring so far be pressed down so that the screen is fully opened, characterized by a arranged on the pressure part (8) Spring (7) * which increases the length of the pressure part so that it continues elastically on the corresponding rib (j5) presses, through a connecting piece (4) which is attached to the rib and which has two spaced-apart pins (5a, 5b) for the pivotable Attachment of the support spoke (12) and the pressure part (8) at a distance and independently of one another, so that the pull-out pressure part (8) the rib (j5) independent of the unstretchable support spoke (12) pushes outwards in the radial direction so that the open Umbrella the covering material (18) always in a taut condition holds without causing the fabric to sag sioh results in the expansion of the same in the wet state. 2. Automatically sioh opening screen naoh claim 1 * daduroh featured that the printed !! from two at a distance of- I 41/1 -13- 003831/0037 mutually lying receiving elements (6,9) consists of one Rod (8), the opposite end parts of which are taken out by the receiving elements, and made of a compressed spiral spring (7), which is arranged on the rod (8) and between the opposite open ends of the receiving elements (6,9) extends. J>. Automatically opening screen according to Claim 1, characterized in that the connecting piece (4) has two spaced-apart pins (5a, 5b), one of which is used to pivot the pressure part (8) while the other Pin (5b) is used to pivot the non-stretchable supporting spoke (12) at a distance from and independently of the pressure part (8). 4. Automatically opening screen according to claim 1, characterized in that the vertical shaft (1) with a guide rod (17) is provided, which extends on the outside of the shaft in the longitudinal direction, and that the slidable middle ring (10) is provided with a vertical groove (16), which receives the guide rod (17) to allow a linear displacement movement of the ring (10) along the shaft (1). 5 · Automatically opening screen according to claim 1, characterized in characterized in that the vertical shaft (1) on his Outside is provided with a stop which limits the downward movement of the displaceable central ring (10). 6. Automatically opening umbrella according to claim 2, characterized in that the receiving element consists of a sleeve (6 or 9), the open end of which receives the rod (8). 7. Automatically opening screen according to claim 2, characterized in that the receiving element consists of a cylinder exists, the open end of which receives the rod (8). 8. Automatiah sioh opening screen naoh claim 5 » characterized in that the Ansohlag consists of a pin (15) « which protrudes from the outside of the vertical Sohaftes (1) naoh outside. I 41/1 -1 * - 009831/0037 9. Automatically opening screen according to claim 4, characterized in that the guide rod (I7) is provided with an outwardly projecting lower end part (17b), v / elcher
the downward movement of the displaceable central ring (10) is limited. 003831/0037