DE3317859A1 - Safety stirrup with a U-shaped upper part and a lower part connected to the latter in an articulated manner - Google Patents

Abstract

The safety stirrup consists of a U-shaped upper part and a lower part which is connected to the latter in an articulated manner and is designed to be wider than the upper part. The upper part has two legs of the same length. At the end regions of these legs, it is connected in an articulated manner to the lower part. The pivoting lines of these two articulated connections extend in this case in the longitudinal direction of the lower part.

Description

33Ί7859

Description: Safety stirrups with a U-shaped upper part and an articulated lower part connected to this

Applicant: Mr. Erwin Meroth in 5000 Cologne 50

The invention relates to a safety stirrup consisting from a U-shaped, rigid upper part and a likewise rigid, a support surface for a shoe having Lower part, which is articulated to the upper part and is wider than the upper part.

As is well known, stirrups support the feet of the person sitting in the saddle Rider. Safety stirrups, also called crash bars, should In addition, make sure that a rider when stomping: From the horse comes free from the stirrup without the risk of his foot getting caught in the stirrup, in particular himself with the foot area of his boot jammed in the stirrup.

Stirrups generally consist of a U-shaped arch part which has an eyelet in its center for a stirrup strap and has two legs of essentially the same length. The free ends the legs are connected to one another by a foot part. In the known safety stirrups of the type mentioned above one leg of the arch part is only very short. The other leg is the full length and is with a lower one Foot section rigidly connected. At the free end of this lower foot section a lower part is articulated so that it is about an axis perpendicular to the plane of the arch part and the foot part is pivotable. This axis thus runs essentially parallel to the rider's foot. Viewed from its pivot axis

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the lower part is two-armed: It consists of an upper foot part that rests on the lower foot part in the normal position and consists of a leg piece, which in the normal position of the known safety stirrup, if the upper foot part is loaded and rests on the lower foot part, the incomplete leg of the Top part completed.

For the functioning of this known safety stirrup, it is assumed that the upper foot of the The lower part is no longer loaded, so that no weight rests on it. The falling rider now presses against the with his foot second arm of the lower part, this can pivot outwards together with the upper foot part rigidly connected to it. The im Normally a ring-shaped closed safety stirrup is then open, the foot can slide out of the side of the stirrup.

However, this known safety stirrup has a number of disadvantages: On the one hand, the safety stirrup only opens when its upper foot part is relieved. However, this does not occur with all types of falls, especially not if when the rider "slips" more or less from the horse. So stresses a certain, very small proportion during a fall the weight of the rider constantly the upper foot part, opening the known safety stirrup is impossible. Furthermore, the well-known safety stirrup only opens when, in addition, a lateral force that swings away the lower part acts on the second, leg-like arm of the lower part. This force must be sufficient to a necessary closing mechanism of the known safety stirrup, the this holds in the annular closed state to overcome.

Furthermore, the statics of the well-known safety stirrups

practically determined only by one leg, the second leg practically does not transmit any tensile forces. However, if it is designed for the transmission of tensile forces, this is an inevitable consequence the locking mechanism is complex and special precautions must be taken to ensure that the well-known safety stirrups opens easily enough. Finally, it is disadvantageous that the known safety stirrup is opened involuntarily, for example, because the rider relieves the foot part. This is not to be ruled out, especially for beginners, who only have one stirrup in certain riding positions, but the other at all do not burden. Then · in the event of an awkward movement, the known safety stirrup can open, which is serious Can result in disadvantages and accidents;

The safety stirrup of the type mentioned is for example in "The great Brockhaus, 18th edition, keyword 'Steigbügel'".

Furthermore, there are stirrup starts that are located in the event of a fall Separate the rider from the stirrup leathers when the stirrups are loaded. Here, however, the measure of the separating force must be very precisely Weight of the rider must be adapted, in other words, each rider must have his own, tailored arrangement of stirrup leathers and use stirrups. This is inconvenient and is particularly useful for beginners who use a safety stirrup should not always be carried out.

Finally, stirrups are known which, in contrast to the above-mentioned safety stirrups, are formed in one piece are, however, also have a safety function: In a known stirrup of this type, one leg is facing outwards strongly bulged so that a foot can turn on the foot part without getting jammed. This one-piece safety climbing

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However, the bracket is at the point where the security Bulge · is provided, the foot does not have any lateral support. Finally, a safety stirrup is known in which one leg is not completely formed, but by one Elastic band is closed. The problem of statics discussed above arises here, there again and here only one Leg carries the foot part. In addition, however, this safety stirrup only enables the foot to be released when the foot is at the Fall ■ turns. In all other cases, the safety precautions will help these last two known stirrups are not.

Proceeding from this, it is the task of the invention, the disadvantages of the known, two-part safety stirrups of the type mentioned and to avoid a safety stirrup create which is always closed, in which both legs always have a carrying function and in which a foot is trapped is nevertheless avoided.

This object is achieved on the basis of the safety stirrups of the type mentioned in that the upper part has two Legs of the same length have that the upper part is articulated at its two free end regions of the legs with the lower part of the stirrup is connected and that the pivot line of these two joint connections each runs in the longitudinal direction of the lower part.

This safety stirrup can be built up symmetrically, which is intended to express that its two legs "have an even bearing function to have. Its particular advantage is that the lower part can be pivoted relative to the upper part, so that the The contact surface is not always at right angles to the level of the stapes, but can assume angular positions with respect to this plane, which prevent slipping out of the constantly closed safety stirrup facilitate and even promote. Particularly beneficial

is that a response of the safety function, so a Tilting of the lower part or foot part, can be reversed at any time during the riding process, if the rider is can stop on the horse or if the safety device was triggered involuntarily. Here's a particular advantage over to see the known safety stirrup, in which the stirrup is closed by hand after the safety device has been triggered must become. Furthermore, the inclined position of the lower part is perceived as pleasant by some riders, especially when climbing on a horse.

In an advantageous further development of the invention, it is proposed that that the pivot lines of the two joints lie on a straight line running parallel to the lower part. Admittedly, we have this obliquely running swivel lines have the advantage that one foot when tilting of the lower part is rotated slightly at the same time, which in part facilitates getting out, but can also hinder the arrangement however, the pivot lines on a straight line running parallel to the lower part has the advantage of a simpler construction and production of the stapes, furthermore it is avoided that a stirrup is defective in ignorance, that is, the wrong way round, can be attached to the stirrup leathers. This is parallel with the symmetrically designed safety stirrup to the lower part running swivel lines excluded because this can be rotated 180 ° without the one State of rotation differs from the other.

In a preferred embodiment of the invention, the two pivot lines each formed by an axis. This has the advantage that the pivot line is precisely determined in each case. Continue to let the tensile forces are well and securely in the thighs of the upper part initiate, as they attack transversely to the direction of the axis.

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In a modified but also more advantageous version it is proposed that the pivot line be predefined and closed by an elastic part, in particular by a rubber block determine. With this design, the lower part can not only be tilted with respect to the upper part, it can also be tilted by this removed or moved towards this. In other words, • the pivot line is not always in the same place. this has advantages because the lower part can give way more than the upper part, thus making it easier for a foot to slide out. In addition, a certain elasticity is created between the lower part and the upper part at the same time, since this connection is made via a flexible elastic rubber element.

A limiting device for the pivoting angle of the lower part with respect to the upper part has proven to be particularly advantageous. This specifies the maximum inclination of the lower part with respect to the upper part. It amounts to more advantageous Training 30 to 70, preferably 45 °. By this limiting device it is avoided that the stirrup by the when Tilting the lower part towards the upper part pivoting edge is closed too much, which may result in jamming ~. could lead. With a pivoting movement of the lower part of about 90 ° compared to the upper part, the clear height of the stirrup is reduced, which in exceptional cases can lead to a jamming Boot or shoe. Furthermore, during a fall, the limiting device, i.e. the sudden deceleration of the tilting movement of the lower part, advantageous for triggering a sliding movement of the sole opposite the lower part. The process of separating the boot from the stirrup is thus supported.

In an advantageous embodiment of the invention, the articulated connection between the lower part and the upper part a locking device that

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allows several fixed pivot positions. In normal position the lower part is at right angles to the level of the stapes. Compared to the normal position, it can turn in both directions be pivoted a predetermined angle. Because of the locking device, there is at least one pivot position in each Swivel direction fixed, the lower part remains in this position. This is beneficial for ascending and avoids that the lower part goes back into the normal position after being pivoted out when the dropping process has almost ended is. This can lead to a jamming of a boot and thus to accidents. However, the latching device is designed in such a way that that it can be overcome at any time by properly loading the lower part. So has a rider arbitrarily to For example, as an aid to climbing, or involuntarily, for example due to an awkward movement, the lower part is brought into a pivoting position relative to the normal position, so he can through Loading the upright edge of the lower part cancels this pivoting state and returns the lower part to the normal position bring. There is no need to touch it by hand.

In an advantageous embodiment of the invention is the Pivot line in the lower third of the safety bar, to put it precisely, the lower part is U-shaped and has a Leg arms projecting towards the free end regions of the legs of the upper part. These have a length from zero to a maximum of one third of the total height of the stirrup. This results in a larger angle of attack of the lower part compared to the upper part achieved than is possible with higher pivot lines. Furthermore, the force that triggers the tilting process engages via one more favorable lever arm than with higher pivot lines. The pivoting process of the lower part is triggered by the fact that this is no longer evenly loaded, so that a side edge of the lower part is much stronger than the other

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is burdened. In this case, the tilting process of the lower part is triggered if there is a correspondingly high tilting force. the Tilting force becomes zero when the considered, more heavily loaded side edge of the lower part lies in the direction of pull. The swivel angle is therefore determined by the angle at which a connecting line from the side edge to the pivot line cuts the legs (lower part in normal position). Large swivel angles are therefore possible if the swivel lines run through the footboard.

Further advantages and features of the., Invention emerge from the remaining claims as well as the following description of several, non-restrictive exemplary embodiments. These will now be explained in more detail with reference to the drawing. In the drawing show:

1 shows a front view of a stirrup with an upper part and a lower part articulated to it, the stapes plane is the plane of the drawing,

FIG. 2 a part of a side view of the stirrup according to FIG. 1,

Fig. 3 is a sectional view along the section line III-III in Figure 2,

4 shows a sectional view similar to FIG. 3 through a second exemplary embodiment of the safety stirrup,

FIG. 5 shows a sectional view along the section line V-V in FIG. 4,

6 shows a side view (partially) of a third exemplary embodiment,

7 shows a sectional view along the section line VII-VII in FIG. 6,

8 shows a sectional side view of a fourth exemplary embodiment with pre-tensioned rubber body,

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Fiq. 9 is a sectional view similar to FIG. 8 of an exemplary embodiment with a rubber body without pretensioning,

10 is a side view of a fifth embodiment, and

11 shows a section along the section line XI-XI in FIG. 10.

The safety stirrup according to the first embodiment According to FIGS. 1 to 3, there is a U-shaped, rigid and symmetrical upper part 20 with two legs 22, 24. It is connected in an articulated manner along two pivot lines 26, 28 to a lower part 30 which, as FIG. 2 clearly shows, is essential is wider than the top. At the end regions 32 of the two legs 22, 24 of equal length there is one in each case Swivel joint, which is determined by an axis 34. The pivot lines 26, 28 run through the lower part 30, slightly below from its geometric center and lie on a straight line which runs in the longitudinal direction of the lower part 30. This can do that Upper part 20 is pivoted to the right or left according to the arrows 36, starting from the normal position shown in the figures will. The pivoting movement is restricted by a limiting device. It is made by flanks 3 8 a V-shaped recess 40 is formed in the end wall of the lower part 30. The depth of this recess 40 corresponds to Thickness of the legs 22, 24, as FIG. 3 shows.

At the same time, a latching device 42 is provided in the recess. It is formed by a rib 44 which projects inside and above the axis 34 on each leg 22, 24. Assigned to her are three locking bays 46, of which the middle one fixes the normal position. In their respective snap-in bays 46 the rib 44 is held due to the spring tension of the upper part 20, in other words, the upper part 20 itself forms the

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Spring of the locking device 42. When the upper part 20 starting from the normal position shown in Figure 2 in the direction of an arrow 36 is pivoted, the two legs 22, 24 must spring slightly outward. They snap in continuation of the movement into the other snap-in bays 46. The advantage here is that additional spring elements are not required.

In order to facilitate the assembly and disassembly of the upper part 20 on the lower part 30, the axes 34 can counter the force of a Spring 50 are pressed. For this purpose, a bore 52 is provided in the lower part 30, into which a sleeve 54 is screwed, which in turn leads the axis 34. Due to a shoulder, this cannot be pulled out further than FIG. 3 shows. However, the axis can be completely countersunk within the bore 52 if it is directed from the outside in the direction of the pivot lines 26, 28 is pressed accordingly. Then the upper part 20 can be removed.

A triggering process for the safety stirrup shown takes place as follows: The lower part 30 has two side edges 56, 58. If one side edge, for example 56, is loaded more heavily than the other, a tilting moment occurs. Is it big enough in order to be able to spread the legs 22, 24 of the upper part 20, the lower part 30 tilts about the axis 34. As a result, as above described, the slipping of a boot from the stirrup facilitated and promoted.

In the exemplary embodiment according to FIGS. 4 and 5, the pivot line is 26 in turn formed by an axis 34, but this is a few millimeters above the surface of the lower part 30. While the lower part 30 in the exemplary embodiment according to FIGS. 1 to 3 is only designed as a plate it is short in the embodiment according to Figures 4 and 5, in

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Leg arms protruding in the direction of the legs of the upper part These have half the thickness of legs 22, 24 and are rounded, as can be seen from FIG. Accordingly, the legs 22 are also cut out in their end area 32 to half the thickness, rounded and additionally provided with snap-in bays 46. The axis 34 is at the center of the curvatures, see here again Figure 6 for comparison.

Here, too, three locking bays 46 are provided, which are part of the Latching device 42 are. A ball 64 is pressed into it by means of a spring 62. The extent of the spring force of the spring 62 can by means of a grub screw. 66. This also becomes the moment that is required for triggering the latching device 42 and thus Swinging out of the .. lower part 3 0 is.t necessary, specified.

The exemplary embodiment according to FIGS. 6 and 7 has certain similarities with the embodiment just discussed, however, the pivot line 26 again lies through an axis 34 formed, much higher than in the embodiment just shown ·. The leg arms 60 of the lower part are accordingly 30 much longer. You have a slot 68 at the top in which a Projection 70 of the leg 22 is guided. This is designed similar to the leg 22 shown in Figure 5, so has latching bays 46, in which a ball 64 engages. In the area of the axis 34 are the free ends of the leg arm 60 or of the leg 22 rounded, as can be seen from FIG. This reduces the risk of injury in the area of the joint connections.

In the following three exemplary embodiments, rubber blocks are used in each case 72, also called "silent blocks", is used. In the two exemplary embodiments according to FIGS. 8 and 9, they form at the same time the swivel joints, so the swivel lines 26 run through them. In other words, the swivel lines 26 are not

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more fixed, but depend on the load and Buckling condition of the rubber body 72. These also cause a flexible connection between the upper part 20 and the lower part 30, what leads to a suppression of abruptly attacking forces.

In the exemplary embodiment according to FIG. 8, the legs 22 of the upper part 20 are replaced by a rubber body 72 of the same diameter extended downwards and merge flush with it. The rubber body 7 2 is below in a corresponding recess in the lower part fitted. The rubber body 72 has a central inner hole 74 through which a rope 76 is guided, with the help of which the rubber body 72 a bias is impressed. It is soldered at the bottom with a grub screw 78 which is inserted into a threaded hole 80. of the lower part 30 is screwed in. Analogously to this, a threaded bore 82 is provided in the end region 32, in which a sleeve-shaped one is inserted Grub screw 84 screwed in. The rope 76, which ends in a ball 86, is supported on its upper side. The grub screws 78, 84 center and thus additionally hold the rubber body 72. By unscrewing the grub screw 78 this becomes Tensioned rope 76, so the bias of rubber body 72 is increased. This creates the moment for a deflection of the lower part 3 0 is necessary, enlarged.

In order to limit the pivoting angle, abutment blocks are shown in dashed lines 88 drawn. These can also be used in the exemplary embodiment according to FIG. 9, which is now to be discussed. With this one a likewise cylindrical rubber body 72 is used, which is attached to its two circular surfaces with metal plates and grub screws 90 is connected. The upper threaded pin 90 is screwed into a threaded bore 82 in the end region 32. The lower Grub screw 90 protrudes into a threaded hole 80 of the lower part 30 and is held by a sleeve screw 92 with an internal thread.

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In the exemplary embodiment according to FIGS. 10 and 11, one is also used cylindrical rubber body 72 for the elastic mounting oincr axis 34, which is formed here by a screw. Included is the pivot line 26 in contrast to the execution leg games according to FIG. 8 or FIG. 9 at the level of the lower part 30, not above this lower part 30.

A rubber body 72 is screwed into the bore 52 of the lower part 30, which has a metallic threaded sleeve on the outside. It also has an inner threaded sleeve with an internal thread into which the formed as a screw shaft 34 is screwed. The head of this screw, which serves as the axis 34, is countersunk in the end region 32, at the same time, several sliding washers 94 are placed underneath. Furthermore, there is a sliding sleeve 96 between axis 34 and the end area arranged. As a result, the leg 22 can be pivoted without the risk of the axle 34 turning out.

Due to the mounting of the axle 3 4 in the rubber body 7 2, the leg 22 can be moved by a certain amount relative to the lower part 30 will. This movement is in addition to the tilting movement of the lower part 30 and absorbs shock forces and makes it easier Slipping out of a boot.

The axial elasticity of the rubber body 72 is finally used for the latching device 42. To do this, jump on the inside of the thigh 22 similar to the exemplary embodiment according to FIGS. 1 to 3, ribs 4 4, of which two are provided this time. Corresponding Snap-in bays 46 are arranged in the lower part 30. Starting from the normal position shown in FIG. 10, the lower part be pivoted by + 45 °.

As a further embodiment, which is not shown, however, a torsion spring can be provided, which is within the

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Lower part 30 is mounted, the lower part 30 in the normal position holds and, in addition to the tilting movement, enables a certain relative movement between lower part 30 and upper part 20, such as it is given in the exemplary embodiment according to FIGS. 10 and 11.

The arrangement of two articulated connections has proven to be particularly advantageous highlighted per leg, as shown in dashed lines in P'igur 6. Compared to the version with only An articulated connection ensures that the lower part 30 is not necessarily inclined when it is pivoted out. Through this it is avoided in an improved manner that when the lower part 30 is pivoted out, the respective pivoted-out side edge 56 or 58 pivots up and the free passage between the legs 22, 24 and the lower part 30 is reduced, resulting in jamming could lead. The distance between the two articulated connections is less than a third of the total height of the legs 22, 24, preferably it is around 15 to 20%. The joint axes of the two joint connections run parallel to one another. In preferably Training, the joint areas are enveloped by an elastic tube 98, which preloads the joints in the 180 ° position and opposes an elastic resistance to pivoting. It also protects the joints from dirt and the user from injuries to the joints.

In Figure 6, in addition to the first articulated connection around the axis 34, there is a second, parallel articulated connection around the Axis 100 is shown in dashed lines. The elastic tube 98 can also be seen.

Claims (15)

Expectations Safety stirrups, consisting of a U-shaped, rigid upper part and an equally rigid, one support surface for a lower part having a shoe which is articulated to the upper part and is wider than the top, characterized in that the upper part (20) has two legs (22, 24), preferably of equal length, that the upper part (20) at the end regions (32) of the legs (22, 24) is articulated to the lower part (30) and that the pivot line (26, 28) of these two articulated connections each extends in the longitudinal direction of the lower part (30). 2. Safety stirrup according to claim 1, characterized in that the pivot lines of the two articulated connections a straight line running parallel to the lower part (30) are arranged. 3. Safety stirrup according to claim 1 or 2, characterized in that that the pivot line (26, 28) is formed by an axis (34). 4. Safety stirrup according to one of claims 1 bos 3, characterized characterized in that the pivot line (26, 28) through an elastic part, in particular a rubber body (72) or a metallic spring is intended. 5. Safety stirrup according to one of claims 1 to 4, characterized by a limiting device (recess 40, flank 38) for the pivoting angle of the lower part (30). with respect to the upper part (20). 6. Safety stirrup according to claim 5, characterized in that the limiting device serves as a stop Has flank (38) and a V-shaped recess (40) on a narrow surface of the lower part (30). 7. Safety stirrup according to one of claims 1 to 6, characterized by a latching device (42) of the articulated connections. 8. Safety stirrup according to claim 7, characterized in that the locking device (42) is a normal position of the Lower part (30) and at least one further locking position, which, starting from the normal position, is defined is pivoted an angle of +30 to +70, preferably + 45 °. 9. Safety stirrup according to claim 7 or 8, characterized in that ■ indicates that the Rasteinrichtung.eine has adjustable spring force spring (50). 10. Safety stirrup according to one of claims 1 to 9, characterized characterized in that the lower part (30) is U-shaped and protrudes in the direction of the legs (22, 24) Has leg arms (60), the length of which does not exceed a third of the total height of the stirrup. - 3 - COPY 11. Safety stirrup according to one of claims 1 to 10, characterized characterized in that it is symmetrical when folded. 12. Safety stirrup according to one of claims 1 to 11, characterized characterized in that the legs (22, 24) are each connected to the lower part (30) via at least two joints are. 13. Safety stirrup according to claim 12, characterized in that that the pivot lines (26, 28) of the articulated connections run parallel to one another. 14. Safety stirrup according to claim 12 or 13, characterized in that the distance between the pivot lines (26, 28) is less than a third of the total height of the legs · (22, 24). 15. Safety stirrup according to one of claims 12 to 14, characterized characterized in that the articulated connections are assigned an elastic device that biases them into the 180 ° position is.