EP1999065B1 - Articulated stirrup - Google Patents

Description

The invention relates to a hinged stirrup according to the preamble of claim 1. Such a stirrup is from the DE 197 35 211 A1 previously known. At the stirrup after the DE 197 35 211 A1 the tread plate is one-piece and made of metal, the lower holding parts are integrally connected with the tread plate.

From the DD 142 700 A1 is a stirrup previously known, the tread plate has a sheathed with a plastic web. The bridge is made of stainless steel and connected to the bracket also made of stainless steel by a welded joint. The bracket is not covered with plastic.

In the from the EP 1 003 688 B1 previously known Gelenksteigbügel, a Weiterentwlcklung the stirrup after the DE 197 35 211 A1 is, the joint areas are also located slightly above the tread plate in the lower region of the side arms and covered by a hose. For the production of this Gelenksteigbügels is also assumed that a normal, one-piece metal stirrup. The side arms are cut in their lower part. At each separation point, an upper holding part or a lower holding part is formed in each case in that the cut-off end regions are specially processed for receiving a hinge part. As a hinge part preferably a piece of a bicycle chain or motorcycle chain is provided.

Out DE 2 125 332 A1 is a substantially made of plastic stirrups known, but which is not a stirrup. In the bracket and in the footboard a continuous reinforcing element in the form of steel wires is embedded.

At the hinge stirrup after the US 6,766,632 B2 the hinge parts are formed by wire rope sections, which are held in the upper holding part and the lower holding part, respectively. A similarly constructed stirrup hanger has also been known by the company Royal Rider, 42015 Correggio (RE) Italy, see also www.royal-rider.com , under the name: Jump 25 Flex. In the latter hanger the tread plate has a body made of plastic and have the lower holding parts grooves and are positively in the plastic body embedded. As with the DE 21 25 332 A1 the surface is not made of metal, it is formed by plastic and optionally rubber sleeves, which cover the hinge parts, respectively.

In the prior art hinged stirrup of the type mentioned, the tread plate is extremely solid, but it has the disadvantage of being relatively heavy. It essentially determines the total weight of the stirrup hanger. However, the training of the bracket made of metal, especially stainless steel, has proven successful, the stapes is therefore very robust.

Based on the stirrup of the type mentioned, the invention has the task of further developing the tread plate that on the one hand less total weight than before, but on the other hand, the reliability does not suffer from the lighter construction, so a comparable security with the metallic hanger bracket extent given is.

This object is achieved by a hinged stirrup with the features of claim 1.

In this hinge stirrup the tread plate is much lighter than previously in metallic training according to the prior art. The static and dynamic requirements are met by the supporting part and the lower holding parts and in that the supporting part is connected at its two ends to the lower holding parts. As a result, the plastic body must meet virtually no static and dynamic requirements, it essentially gives the outer shape and in him the described parts are embedded. Due to the embedding of the plastic body fixes the support member and the lower holding parts. Preferably, these are not only connected by the fact that they are enveloped by the plastic body, but they are sufficiently interconnected so that even if the body of plastic fails, the function of the tread plate is maintained. In the stirrup according to the invention, the center of gravity can be positioned, on the one hand, at a greater distance from the tread plate than in the prior art and, on the other hand, in a more targeted manner.

The support member is preferably made of a tensile material. This ensures that, even in the absence of the plastic body, it can absorb the stresses that occur in practical operation.

By wrapping the support member this is protected. So it can be used, for example, materials that are prone to rust or could be isolated from home.

The interaction of the plastic body and the structuring parts, ie lower holding parts and supporting part, allows optimum strength, a favorable weight and can be ideally adapted to the respective requirements.

Preferably, the support member is permanently connected to the lower holding parts, the connection is such that even if missing or destroyed plastic body still exists a secure connection.

In a favorable development, the support member has recesses into which the plastic material can penetrate in the production of the plastic body in the casting process. Thus, an intimate connection between the structuring parts and the plastic body is achieved.

The plastic body is preferably applied in a casting process to the already produced, structure-forming parts, an injection molding method is preferably used.

In a particularly preferred embodiment, the support member is integrally connected to the lower holding parts. This ensures that optimum strength is achieved. Any joints that could fail during operation are missing.

Fig. 1:

eine Frontansicht des Gelenksteigbügels, teilweise, um die Gelenkbereiche im Einzelnen erkennen zu können, schnittbildlich dargestellt,

Fig. 2:

eine schnittbildliche Darstellung durch die Trittplatte ohne Gummieinlage, Schnittebene ist die x-y-Ebene (Längsebene),

Fig. 3:

ein Schnitt entlang der Schnittlinie III-III in Figur 2,

Fig. 4:

eine Draufsicht in negativer y-Richtung auf die Trittplatte gemäß Figur 2 und ebenso ohne Gummieinlage,

Fig. 5:

eine Seitenansicht in z-Richtung der strukturgebenden Teile einer Trittplatte mit gestrichelt dargestelltem Kunststoffkörper, die nicht Teil der Erfindung ist,

Fig. 6:

eine Draufsicht in negativer y-Richtung auf die Trittplatte gemäß Figur 5,

Fig. 7:

eine Darstellung ähnlich Figur 5 für ein drittes Ausführungsbeispiel der Trittplatte,

Fig. 8:

eine Ansicht wie Figur 6 auf die Ausführung gemäß Figur 7,

Fig. 9:

eine Darstellung wie Figur 5 für ein viertes Ausführungsbeispiel der Trittplatte, die nicht Teil der Erfindung ist,

Fig. 10:

eine Darstellung entsprechend Figur 6 für die vierte Ausführung gemäß Figur 9.

Fig. 11:

eine Stirnansicht des vierten Ausführungsbeispiels, gesehen in x-Richtung,

Fig. 12:

eine Darstellung wie Figur 5 für ein fünftes Ausführungsbeispiel der Trittplatte,

Fig. 13:

eine Darstellung wie Figur 6 für die fünfte Ausführung gemäß Figur 12,

Fig. 14:

eine Darstellung wie Figur 5 für ein sechstes Ausführungsbeispiel,

Fig. 15:

eine Darstellung wie Figur 6 für das sechste Ausführungsbeispiel gemäß Figur 15, die nicht Teil der Erfindung ist,

Fig. 16:

eine Darstellung wie Figur 5 für eine siebte Ausführung der Trittplatte, und

Fig. 17:

eine Darstellung wie Figur 6 für die siebte Ausführung gemäß Figur 16, die nicht Teil der Erfindung ist.

Further advantages and features of the invention will become apparent from the other claims and the following description of eight non-limiting embodiments of the invention, which are explained below with reference to the drawings. In the drawing show:

Fig. 1:

a front view of the articular stirrup, partially in order to recognize the joint areas in detail, shown in section,

Fig. 2:

a sectional representation through the tread plate without rubber insert, sectional plane is the xy plane (longitudinal plane),

3:

a section along the section line III-III in FIG. 2 .

4:

a plan view in the negative y-direction on the tread plate according to FIG. 2 and also without rubber insert,

Fig. 5:

a side view in the z-direction of the structural parts of a tread plate with plastic body shown in dashed lines, which is not part of the invention,

Fig. 6:

a plan view in the negative y-direction on the tread plate according to FIG. 5 .

Fig. 7:

a representation similar FIG. 5 for a third embodiment of the tread plate,

Fig. 8:

a view like FIG. 6 on the execution according to FIG. 7 .

Fig. 9:

a representation like FIG. 5 for a fourth embodiment of the tread plate, which is not part of the invention,

Fig. 10:

a representation accordingly FIG. 6 for the fourth embodiment according to FIG. 9 ,

Fig. 11:

an end view of the fourth embodiment, seen in the x direction,

Fig. 12:

a representation like FIG. 5 for a fifth embodiment of the tread plate,

Fig. 13:

a representation like FIG. 6 for the fifth execution according to FIG. 12 .

Fig. 14:

a representation like FIG. 5 for a sixth embodiment,

Fig. 15:

a representation like FIG. 6 for the sixth embodiment according to FIG. 15 that is not part of the invention,

Fig. 16:

a representation like FIG. 5 for a seventh embodiment of the tread plate, and

Fig. 17:

a representation like FIG. 6 for the seventh embodiment according to FIG. 16 which is not part of the invention.

A stirrup, as in Fig. 1 is completely shown and also shown in parts in the other figures, has a tread plate 20, which forms a support for a boot, not shown here, and connected to this tread plate 20, U-shaped bracket 22. This bracket 22 has two lateral Legs 24, 26 on. The two legs 24, 26 are each provided with a hinge region 30 in their lower region. To form the hinge portion 30 is on the already mentioned EP 1 003 688 B1 Reference is made, in particular to the three figures of this patent.

The stirrup is rotationally symmetrical to a mid-perpendicular 32 of the tread plate 20, the symmetry is 180 °. This perpendicular bisector 32 lies in a longitudinal plane 34. The longitudinal plane 34 is also defined by a longitudinal axis 36 of the tread plate 20, which connects the center of the foot points of the two legs 24, 26. The longitudinal plane 34 is at the same time a plane of symmetry for the tread plate 20. In Fig. 1 the longitudinal plane 34 runs in the plane of the paper.

In the FIG. 1 are in order to better explain the stirrup can be drawn from a rectangular coordinate system, the axes x, y, the z-axis is not shown, it extends at right angles out of the plane of the paper. The longitudinal plane 34 lies in the xy plane. It runs through the center of the stirrup. A transverse plane runs in the yz plane. It should be noted that, in contrast to the graphic representation, the center of this coordinate system is located in the middle of the tread plate 20, ie at the intersection of the longitudinal axis 36 and the center perpendicular 32. The longitudinal axis 36 lies on the x-axis. The mid-perpendicular 32 lies on the y-axis.

In FIG. 1 an upper portion of the U-shaped bracket 22 is shown. This section ends, as can be seen from the left section, in a connection region 40, as it is known from EP 1 003 688 B1 is known. In this case, holes in the connection areas 40 can be seen. They define one of the several, mutually parallel hinge axes of the hinge portion 30. This connection portion 40 of the upper portion is also referred to as the upper holding part 41. He is facing a connection portion 40 of a lower portion of the bracket 22, this is referred to as the lower holding part 42. Between these holding parts 41, 42 is a hinge part 43, which is only hinted at here, for disclosure is made to said EP patent specification. As shown for all embodiments in the figures, the lower holding parts 42 extend into the tread plate 20, at least by a few millimeters, for example at least three, preferably at least five millimeters, and are enclosed there or embedded in the plastic material.

The tread plate 20 is according to the first embodiment, Fig. 1 to 4 It has a built up of round material support member 44. The diameter of the round material corresponds to the diameter of the legs 24, 26 in their lowest portion, such as the FIGS. 2 and 4 demonstrate. The support member 44 is bent oval, precisely it consists of two semicircles and these connecting straight-line sections. At the apex of the respective semicircular areas, it is connected to lower end pieces of the legs 24, 26, that is, to the lower holding parts 42. The connection can be made by welding, screws or the like. In addition, the support member 44 has a cross piece 46 which connects the straight sections in their midst. It is made of thinner round material, for example, 30-50% of the diameter of the material of the support member 44. It is placed on top of the crosspiece 46 and welded at its ends with this.

Support member 44 and cross member 46, and the bottom most end portions of the lower portions of the legs 24, 26 are encapsulated in plastic, so that an approximately 8-shaped plastic body is formed. Its form is from the FIGS. 2, 4 . 8th . 13 etc. visible. The construction saves weight. At the same time, the connection points are protected. The plastic body 48 has a flat top and a flat bottom, both are parallel to the xz plane.

In known manner, a rubber insert 50 is clipped into the thus formed tread plate 20, it is in FIG. 1 partially shown. It is made of a suitable elastomeric material. It integrally forms an upper support area 52 and adjoining arms with projections 54, the latter engage under the undersurface of the tread plate 20 and secure the grip of the rubber insert 50. The rubber insert 50 passes through two recesses 64 of the tread plate 20, which have a U-shape and a mirror image are arranged to the yz plane, see first, third and fifth embodiments. In the other embodiments, no recess 64 is shown.

In modification to the execution after the FIGS. 2 to 4 It is also possible, the limbs 24, 26 do not put blunt with their lower ends on the support member 44 and connect, but to form both parts at least partially in one piece. For this purpose, the legs 24, 26 may be formed longer at the bottom and angled 90 ° in the plane of the support member 44 so that it forms at least a portion of the support member 44. For this purpose, the fifth execution after the FIGS. 12 and 13 and on the sixth execution after the FIGS. 14 and 15 referred, which is not part of the invention.

In the second embodiment, which is not part of the invention, according to the FIGS. 5 and 6 the support member 44 is made of a round material, for example of metal or plastic. It has a given shape into which it is bent. This is composed of an approximately hexagonal middle region and two wraps at opposite corners together. The support member 44 is in one piece. At the wraps around the support member 44 practically completely surrounds the two lower holding parts 42. At the lower holding parts 42 is below a disc 60 is attached, which is connected to the lower holding part 42. It secures the support member 44 down. The round material from which the support member 44 is made, is connected together in a joint 62, for example, glued, welded or soldered.

In the third execution after the FIGS. 7 and 8 is the support member 44 by a plurality, are shown five, identical, approximately 8-shaped flat parts or blanks formed, which are threaded onto the two lower holding members 42. For this purpose, the blanks each have holes which are adapted to the diameter of the lower holding part 42. In addition, the blanks each have two recesses for the recesses 64. The blanks, which together form the support member 44, can be provided in any number and thus with a targeted weight. They are stacked on top of each other. In this way can be varied between high weight and thus high strength and lower weight. The center of gravity of the entire stirrup can be adjusted in this way in one area.

In the fourth execution after the FIGS. 9 to 11 which is not part of the invention, the support member 44 is again made of metal or plastic, as in the previous embodiment, this time it is in cross-section U-shaped, see FIG. 11 , As a result, a high strength in the loading direction, ie negative y-direction is achieved. Again, the lower holding members 42 are closed by a disc 60 which is fixedly connected to them. As a result, the support member 44 can simply rest, but it can also be firmly connected to the lower holding members 42 and / or the disc 60.

In the fifth embodiment according to the FIGS. 12 and 13 is the support member 44 made in one piece with the two lower support members 42, a corresponding U-shaped part is in FIG. 12 to recognize. This training has the advantage of low weight and high reliability. For additional reinforcement of the plastic body 48 is still a cross-piece 46 is provided, which also, as the following embodiment shows, may be present several times, but can also be omitted. In order to avoid that the support member 44 passes through the recesses 64, the support member 44 may also be bent around these recesses 64. It is only important that it is integral with the lower support members 42.

The sixth embodiment according to the FIGS. 14 to 16 , which is not part of the invention, substantially corresponds to the fifth embodiment, there are now a total of three cross members 46 are provided. They can, as shown, each be welded laterally, are passed through holes in the round material of the support member 44 or placed on top of this and connected to him.

The seventh embodiment of the FIGS. 16 and 17 Finally, FIG. 1, which is not part of the invention, shows a support part 44 in the form of two parallel cable strands, for example of metal or plastic. The cable strands have end loops which are formed by returning the material and combining in a sleeve 68. The Eyelets are placed around the transverse pins 66, so that a positive connection is achieved. It can, as shown, be worked with two pieces of rope, but it is sufficient also a piece of rope.

In all illustrated embodiments, the two lower holding parts 42 protrude from the plastic body 48. In most embodiments, support members 44 and a possibly existing crosspiece 46 are completely embedded in the material of the plastic body 48. An exception is only the fifth embodiment, where portions of the support member 44 within the recesses 64 are visible. These cuts do not interfere with the insertion of the rubber pad 50, but even support it down. The projections 54 engage in the spaces between the support member 44 and the lateral edges of the recesses 64. Since support member 44 is also referred to as a bridge part. It is preferably grayed on its surface or otherwise provided with recesses which allow a good connection with the plastic of the body 48, in particular a large surface for the contact. Likewise, the crosspiece 46 should be formed.

The filed on the same date priority German patent application "stirrup insert for a stirrup" of the Applicant describes the formation of the rubber insert 50, as shown in the Fig. 1 to 3 can be seen in detail.

Claims (9)

1. An articulated stirrup with a footplate (20) and with a U-shaped clamp (22) which has two lateral limbs (24, 26) and articulated regions (30) arranged therein, the articulated regions (30) comprising an upper retaining part (41), a lower retaining part (42) and a hinge part (43), e.g., a piece of a bicycle chain, arranged between the two retaining parts, and the articulated stirrup comprises a rubber insert (50) clipped into the footplate (20), wherein the carrier part (44) joins the lower retaining parts together, characterised in that the footplate (20) comprises a carrier part (44) and a plastic body (48), that the carrier part (44) is disposed inside the plastic body (48) and that the lower retaining parts (42) project into the footplate (20) by at least a few millimetres and are enclosed there by the plastic material of the plastic body (48) and embedded therein.
2. The articulated stirrup according to claim 1, characterised in that the carrier part (44) is made from a material that has tensile strength and that is, in particular, selected from one of the following items: a piece of rope, a chain, a plate, a cast part and a profile, each of them being made from metal or from a plastic material, the plastic material differing from the plastic material of the plastic body (48).
3. The articulated stirrup according to claim 1, characterised in that the carrier part (44) is connected to the lower retaining parts (42) positively, integrally or by means of a permanent connection, particularly including welding.
4. The articulated stirrup according to claim 1, characterised in that the carrier part (44) comprises a rough surface and/or recesses into which plastic material deposits during the formation of the plastic body (48) by casting.
5. The articulated stirrup according to claim 1, characterised in that the plastic body (48) is made by casting, in particular by injection moulding.
6. The articulated stirrup according to claim 1, characterised in that the two lower retaining parts (42) are integrally joined together by the carrier part (44).
7. The articulated stirrup according to claim 1, characterised in that the carrier part (44) by itself, without the plastic body (48), meets the static and dynamic demands placed upon the footplate (20).
8. The articulated stirrup according to claim 1, characterised in that the U-shaped clamp (22) has a substantially metallic surface.
9. The articulated stirrup according to claim 1, characterised in that the lower retaining parts (42) projects into the footplate (20) by at least three, preferably at least five millimetres.

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