WO2021155414A1

WO2021155414A1 - Connecting link

Info

Publication number: WO2021155414A1
Application number: PCT/AT2021/060028
Authority: WO
Inventors: Franz Seelaus
Original assignee: Franz Seelaus
Priority date: 2020-02-06
Filing date: 2021-01-27
Publication date: 2021-08-12
Also published as: AT522460B1; AT522460A4

Abstract

The invention relates to a connecting link (30) for fastening a sunshade, privacy screen or windbreak (1) to a suitable attachment point such as a cross-bar on a sunbed, having a first connecting part for gripping a part of the sunshade or windbreak and a second connecting part for connecting to the attachment point, the first connecting part and the second connecting part being pivotable about an axis of rotation (y), and both the first connecting part and the second connecting part having toothed discs (34a, 34b), which can engage with one another and are arranged along the axis of rotation (y), and at least a first toothed disc (34a) having notches (38) for receiving teeth (39) of a second toothed disc (34b) and teeth (39) for engaging in notches (38) of the second toothed disc (34b), characterized in that the teeth (39) of the first toothed disc (34a) are at least partially flat in relation to the main plane of extension transverse to the axis of rotation (y) of the first toothed disc (34a), and that the teeth (39) of the second toothed disc (34b) are pointed.

Description

Connecting link

The invention relates to a connecting member for attaching a sun, sight or wind protection device to a suitable point of attack such as a cross rod of a sun lounger, with a first connecting part for gripping a part of the sun, sight or wind protection device and a second connecting part for connection to the Point of application, wherein the first connecting part and the second connecting part are pivotable about an axis of rotation and both the first connecting part and the second connecting part have interlocking toothed disks, which are arranged along the axis of rotation, and at least one first toothed disk notches for receiving teeth of a second Has toothed washer and teeth for engaging in notches in the second toothed washer.

Such connecting links are used to a sun, privacy or wind protection device such as umbrellas, sails or the like at a destination such as a sun lounger, a boat, armchair, etc. to attach.

GB 2409234 A discloses such an embodiment in which the pointed teeth of the toothed disks mesh with one another. By engaging the teeth and notches in the coaxial toothed disks, a rigid position is established and that of a sun, privacy or wind protection device is kept in a defined position in relation to the destination. By pressing the toothed disks together, this position is locked and maintained even in stronger winds. This is usually made possible by a screw connection. If the position is to be changed, the toothed washers must be removed from each other and the new desired position must be taken in order to then press the toothed disks together again in this.

However, it may be desirable that a simpler adjustment by the user is possible without laborious loosening of the toothed lock washers in relation to one another when the wind is less strong. At the same time, the position should be kept stable in strong winds.

In US 2,003,844 A an alternative embodiment is shown in which both toothed disks have flattened teeth. As with toothed disks with sharp teeth, this requires a rigid fixation that can only be changed by opening the cohesive Bol zens only through complete Lö sen the toothed disks from each other. Then the bolt must be screwed together again in such a way that the toothed lock washers are fixed again. The object of the present invention is therefore to provide a connecting member which enables improved adjustability.

This object is achieved according to the invention in that the teeth of the first toothed disk are designed to be at least partially flat in relation to the main plane of extent transversely to the axis of rotation of the first toothed disk and that the teeth of the second toothed disk are pointed.

The toothed lock washers have teeth for engaging notches and they also have notches for receiving teeth. This allows a toothed disk to mesh with a corresponding toothed disk and by at least partially receiving the teeth of a first toothed disk in the notches of a second toothed disk, as well as at least partially receiving the teeth of the second toothed disk in the notches of the first toothed disk, fix or lock the connecting parts against each other.

Between the notches and the teeth there are flanks that can be parallel or at an angle to one another. If they are parallel to each other, the result is a flat tip. If the two flanks assigned to a tip run towards the tip towards each other, the maximum increase in the tip should be a maximum of 80%, preferably a maximum of two thirds and especially preferably a maximum of half the height of the meeting point of the envelope of the flanks so that they is still considered flat. These heights are measured from the deepest points of the notches.

As a result, when the toothed disks are pressed against one another strongly, a defined position can still be maintained even when there is strong wind or other strong forces. However, if the toothed disks are only slightly pressed against one another, the toothed disks can move against one another if a minimum force acts on them. With smaller forces below this minimum force, however, they still hold their position in relation to one another in a stable manner. This allows easy manual adjustment of the toothed disks to each other while still having sufficient stability against undesirable forces such as small gusts of wind.

It is particularly advantageous if the first toothed disk has teeth between the notches and these teeth have flat planes which are normal to the axis of rotation and are essentially all arranged at the same height. A particularly simple adjustment can thus be made possible.

In order to achieve an optimal interaction of the toothed disks, it is advantageous that the teeth of the second toothed disk are designed to be pointed. With pointed it is meant that the flanks run towards each other in the direction of the tip and the maximum elevation of the tip is more than half, preferably more than two thirds and particularly preferably more than 80% of the height of the meeting point of the envelope ends of the two flanks. These heights are measured from the deepest points of the notches.

It can be provided that the first connecting part is designed as a tension clamp and the second connecting part as a gripper, the gripper preferably having three fingers and two of the fingers being arranged opposite the third. This means that the connecting link can be set well on a wide variety of shapes, on rods or on spherical, round surfaces. In addition, it prevents the link from tilting.

It can be provided that the finger facing the two fingers is firmly connected to a toothed washer, preferably in one piece.

It is particularly advantageous if a buffer disk is arranged between the first toothed disk and the second toothed disk. The buffer disk can be made of rubber or another suitable elastic material and extends over the teeth and notches. With elastic material is meant a material with a modulus of elasticity of 50 GPa or less, preferably 0.5 GPa or less.

For a stable connection, it is advantageous if the first connecting part and the second connecting part are connected via a screw axis along the axis of rotation.

It is also advantageous if the first connecting part has two pressing halves which are arranged along the screw axis and can be pressed against one another and that the pressing halves form at least one common recess for the implementation of the part of the sun, privacy or wind protection device, which is preferably essentially transverse extends to the axis of rotation. The pressing halves can preferably be pressed or clamped against one another via a screw connection.

For ergonomic grip and adjustment, it can be advantageous if the press halves have a substantially semicircular cross-section.

The pressing halves can be filled in a honeycomb shape. This achieves a high level of stability with a low weight.

The recess preferably does not have a uniform radius. This means that the recess is not circular, but rather elliptical or angular, for example, pentagonal or polygonal in the shape of a parallelogram. the Corners can be rounded. In this way, a shape is found that can be easily connected to bars of various diameters.

In the following, the invention will be explained in more detail with reference to non-limiting embodiments in the figures. Show it:

Fig. La and Fig. Lb a first embodiment of the invention of the connecting member in side views;

Fig. 2 is an enlarged detail from Fig. 1 in an Explosionsdarstel treatment;

Fig. 3 is a side view of part of a connecting link in a two-th embodiment.

Fig. La, Fig. Lb and Fig. 2 show a connecting member 30, which has a first connection part in the form of a clamp 32 for gripping a foot or head bar of a sun sail and a second connecting part in the form of a gripper 31 for connection to a sun lounger, has a railing, a carabiner or other pad for attaching the device. Gripper 31 and clamp 32 are connected via a screw shaft 33, with a toothed plate 34a, 34b each being firmly connected to the gripper 31 and clamp 32. The gripper 31 has two fingers 44 which face a third finder 45. The gripper 31 can be rotated together or apart via a rotation setting 45.

In the position shown, the tension clamp 32 and gripper 31 can be rotated or pivoted relative to one another about the screw axis 33 - which defines the axis of rotation y - and thus transversely to the longitudinal axis of the foot rod 15 or head rod 15.

A first tooth plate 34a, which is firmly connected to the gripper 31, has notches 38 which are distributed at regular intervals around the circumference of the tooth plate 34a. A point 39 is always arranged between two adjacent notches 38. The transition between notches 38 and teeth 39 is described by means of flanks 43 which are inclined towards teeth 39. The teeth 39 have a flat plane 40, each plane 40 of each tooth 39b being arranged at the same height along the axis of rotation y and the plane 40 also lying parallel to one another. The teeth 39 have a height h which is less than half the height H of the intersection point S of the envelope E, measured from the height of the notches 38.

Opposite the first tooth plate 34a is a second tooth plate 34b which has pointed teeth 39. The flanks 43 are completely up to their point of intersection executed, which also represents the tip 39. So the height h corresponds to the height H.

If the screw shaft 33 is completely screwed into a corresponding thread in the gripper 31 via a handle 35, the tension clamp 32 is closed and thus with a foot rod or head rod arranged in it - not shown - brought into engagement. In addition, the Zahnplat th 34a, 34b are firmly pressed together, the buffer disk 42 bends sharply and the teeth 39 are brought into engagement with the notches 38 and the rotational position of the gripper 31 to the clamp 32 is determined. This means that the position of rotation can be freely selected in the open state. In the completely closed position, however, the rotary position is fixed, which prevents unintentional adjustment even in strong winds. A rotation about a further axis, either about the longitudinal axis of the head or foot rod 15 or about the element encompassing the gripper 31, can thereby be made possible by the tension clamp 32 and / or the gripper 31.

However, if the screw shaft 33 is not completely tightened, but rather a certain amount of play is allowed, the toothed plates 34a, 34b are pressed against one another to such an extent that they cannot be rotated against one another by minor forces. The buffer disk 42 bends only slightly in the process. This keeps the sun, privacy or wind protection device stable in its position. However, if greater force is exerted on this connection, for example by a user, and the minimum force is exceeded, the teeth 39 can be released from the notches 38 and the toothed disks 34a, 34b can be rotated relative to one another. This enables adjustment with greater force. The buffer disk 42 improves the hold of the toothed plates 34 on one another. The minimum force can be set through the intensity of the tightening.

Fig. 3 shows part of an alternative embodiment of a first pressing part 41 of the connecting member 30. This part represents one half of a tension clamp 32, which therefore has two semi-cylindrical recesses 36 to accommodate a head or foot bar of a sun sail or the like and to put them together with a corresponding counterpart, which is preferably shaped in the same way as this part, essentially. The recesses 36 are un differently large in order to be able to make optimal recordings for rods of different sizes. The recesses 36 have a cross section which is parallelogram-shaped, the corners being rounded. It preferably has another similarly shaped recess with a different diameter, so that it can also be used for head or foot bars of different dimensions. A Boh tion 37 leads through the part through which an axis can be guided, which can connect the counterpart described and a second connecting part with the part. In this case, the second tooth plate 34b is arranged around the bore, which can be brought into engagement with a corresponding first tooth plate 34a of the second connec tion part. The part has a semicircular shape, which is why it is easy for a user to grasp and the angle can be easily adjusted through.

Claims

PATENT CLAIMS

1. Link (30) for attaching a sun, sight or wind protection device at a suitable point of attack such as a crossbar of a sun lounger, with a first connecting part for grasping part of the sun, sight or wind protection device and a second connec tion part for connection with the point of application, wherein the first connecting part and the second connecting part can be pivoted about an axis of rotation (y) and both the first connecting part and the second connecting part have toothed disks (34a, 34b) which can be interlocked and which along the axis of rotation (y ) are arranged, and wherein at least one first toothed disk (34a) has notches (38) for receiving teeth (39) of a second toothed disk (34b) and teeth (39) for engaging in notches (38) of the second toothed disk (34b), characterized in that the teeth (39) of the first toothed disk (34a) in relation to the main extension plane transverse to the axis of rotation (y) of the first toothed disk (34a) are designed to be at least partially flat and that the teeth (39) of the second toothed disk (34b) are designed to be pointed.

2. Connecting link (30) according to claim 1, characterized in that the first toothed washer (34a) between the notches (38) has teeth (39) and these teeth (39) have flat planes (40) which are normal to the axis of rotation ( y) and are essentially all arranged at the same height.

3. Connecting link (30) according to one of claims 1 to 2, characterized in that the first connecting part is designed as a tension clamp (32) and the second connecting part as a gripper (31), the gripper (31) preferably having three fingers and two of the fingers are arranged opposite the third.

4. Connecting link (30) according to one of claims 1 to 3, characterized in that a buffer disk (42) is arranged between the first toothed disk (34a) and the second toothed disk (34b).

5. Connecting link (30) according to one of claims 1 to 4, characterized in that the first connecting part (32) and the second connecting part (31) are connected via a screw axis (33) along the axis of rotation (y).

6. connecting link (30) according to claim 5, characterized in that the first connecting part (32) has two pressing halves which are arranged along the screw axis (33) and can be pressed against one another and that the pressing halves form at least one common recess (36) for the implementation of the part of the sun, privacy or wind protection device, which preferably extends essentially transversely to the axis of rotation (y).

7. connecting link (30) according to claim 5 or 6, characterized in that the pressing halves have a substantially semicircular cross-section.

2021 01 27

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