EP1999065A1

EP1999065A1 - Articulated stirrup

Info

Publication number: EP1999065A1
Application number: EP07726700A
Authority: EP
Inventors: Heinz Baumann; Valentin Völlmecke
Original assignee: Herm Sprenger GmbH and Co KG
Current assignee: Herm Sprenger GmbH and Co KG
Priority date: 2006-03-17
Filing date: 2007-03-07
Publication date: 2008-12-10
Anticipated expiration: 2027-03-07
Also published as: AU2007228871B2; EP1999065B1; WO2007107454A1; DE112007000327A5; AU2007228871A1; JP4909402B2; JP2009529996A; CA2645448A1; CA2645448C; US20100300050A1

Abstract

The invention is concerned with 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, wherein said articulated regions (30) have an upper retaining part (41), a lower retaining part (42) and a hinge part (43), for example part of a bicycle chain, arranged between said two retaining parts. The lower retaining part reaches into the footplate (20). The footplate (20) has a supporting part (44) and a plastic body. The supporting part (44) is arranged within said plastic body (48) and connects the lower retaining parts to each other.

Description

Designation: Articulated stirrup

The invention relates to a stirrup with a tread plate and with a U-shaped bracket having side arms and arranged in these joints, said hinges an upper support member, a lower support member and arranged between these two holding parts hinge part, e.g. a piece of a bicycle chain having

In this previously known from EP 1 903 688 Bl link stirrup, also known as safety stirrups, the joint areas are arranged slightly above the tread plate in the lower region of the side arms and covered by a hose. For the production of this Gelenksteigbügels it is 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.

From DE 2 125 332 A1, a stirrup made essentially of plastic is known, which, however, is not a hinged stirrup. In the bracket and in the footboard a continuous reinforcing element in the form of steel wires is embedded.

In the articulated stirrup according to US 6,766,632 B2, the hinge parts are formed by wire rope sections, which are held in the upper holding part and in the lower holding part, respectively. A similarly constructed stirrup hanger has also become known by the company Royal Rider, 42015 Correggio (RE) Italy, see also wjΛΛΛUOyaHjdgXiCorn, under the name: Jump 25 Flex. In the latter hanger rail the tread plate has a plastic body and have the lower holding parts grooves and are positively embedded in the plastic body. As in DE 21 25 332 Al, 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 on the basis of the articulated stirrup of the type mentioned above in that the articulated stirrup has a tread plate and a U-shaped bracket, the side arms and disposed in these joint areas, said hinge areas an upper holding part, a lower holding part and between them two holding parts arranged hinge part, eg a piece of a bicycle chain having.

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 focus 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 more targeted. 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.

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: 1 is a front view of the articular stirrup, partially to be able to recognize the joint areas in detail, shown in cross-section,

2 shows a sectional representation through the tread plate without rubber insert, sectional plane is the x-y plane (longitudinal plane),

3 shows a section along the section line III-III in Figure 2,

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

5 shows a side view in the z-direction of the structuring parts of a tread plate with plastic body shown in dashed lines,

6 is a plan view in the negative y-direction on the tread plate according to Figure 5,

7 is a view similar to Figure 5 for a third embodiment of the tread plate,

8 is a view like Figure 6 on the embodiment of Figure 7,

9 shows a representation as in FIG. 5 for a fourth exemplary embodiment of the tread plate,

10 shows a representation corresponding to FIG. 6 for the fourth embodiment according to FIG. 9.

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

12 is a view as Figure 5 for a fifth embodiment of the tread plate,

FIG. 13: a representation like FIG. 6 for the fifth embodiment according to FIG. 12,

FIG. 14 is a view like FIG. 5 for a sixth exemplary embodiment, FIG. FIG. 15: a representation like FIG. 6 for the sixth exemplary embodiment according to FIG. 15, FIG.

FIG. 16 is an illustration as in FIG. 5 for a seventh embodiment of the tread plate, and FIG

FIG. 17: a representation like FIG. 6 for the seventh embodiment according to FIG. 16.

A stirrup, as shown in Fig. 1 complete and also shown in sections 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. The two legs 24, 26 are each provided with a hinge region 30 in their lower region. Reference is made to the already mentioned EP 1 003 688 B1 for the formation of the joint region 30, in particular also to the three figures of this patent specification.

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 extends in the plane of the paper.

In FIG. 1, in order to better explain the stirrup, the axes x, y are drawn from a rectangular coordinate system, 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 38 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 Figure 1, an upper portion of the U-shaped bracket 22 is shown. As can be seen from the left-hand section, this section ends in a connection region 40, as is known from EP 1 003 688 B1. 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 constructed according to the first embodiment, Fig. 1 to 4, as follows: It has a made of round material support member 44. The diameter of the round material corresponds to the diameter of the legs 24, 26 in its lowest portion, such as the figures. 2 and 4 show. 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, as well as the lowermost 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 shape is apparent from Figures 2, 4, 8, 13, etc. 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 a manner known per se, a rubber insert 50 is clipped into the thus formed tread plate 20, it is partly shown in FIG. It is made of a suitable elastomeric material. It integrally forms an upper bearing 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 a modification to the embodiment according to FIGS. 2 to 4, it is also possible for the limbs 24, 26 not to be set flush with the lower part of the support part 44 and to 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. Reference is made to the fifth embodiment of Figures 12 and 13 and to the sixth embodiment of Figures 14 and 15.

In the second embodiment according to Figures 5 and 6, the support member 44 is made of a round material, for example made 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 embodiment according to Figures 7 and 8, 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 part 44, can NEN in any number and thus be provided 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 embodiment according to FIGS. 9 to 11, the support part 44 is again made of metal or plastic, as in the previous exemplary embodiment, this time it is U-shaped in cross-section, see FIG. 11. This results in a high strength in the loading direction, ie negative y-direction. Direction, reached. 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 Figures 12 and 13, the support member 44 is integrally formed with the two lower holding members 42, a corresponding U-shaped part can be seen in Figure 12. 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, which may 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 exemplary embodiment according to FIGS. 14 to 16 essentially corresponds to the fifth exemplary embodiment; a total of three transverse parts 46 are now 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.

Finally, the seventh embodiment according to FIGS. 16 and 17 shows a carrying 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.

Applicant's German patent application "Stirrup Insert for a Stirrup" filed on the same date of priority describes in detail the construction of the rubber insert 50 as shown in Figures 1 to 3. The disclosure of this application is incorporated herein by reference in its entirety.

Claims

claims

1. Articulated stirrup with a tread plate (20) and with a U-shaped bracket (22) having two lateral legs (24, 26) and arranged in these joint areas (30), said hinge areas (30) has an upper holding part (41 ), a lower holding part (42) and arranged between these two holding parts hinge part (43), eg a piece of a bicycle chain, characterized in that the lower holding part (42) extends into the tread plate (20) that the tread plate (20) has a support member (44) and a plastic body (48) that the support member (44) is disposed within this plastic body (48), and that the support member (44) connects the lower holding parts together.

2. Articulated stirrup according to claim 1, characterized in that the support member (44) is made of a tensile material and in particular selected from one of the following items: a piece of rope, a chain, a plate, a casting and a profile, each made of metal or a plastic material, wherein the plastic material is different from the plastic of the plastic body (48).

3. Articulated stirrup according to claim 1, characterized in that the supporting part (44) with the lower holding parts (42) positively, in one piece or by a permanent connection, including in particular welding is connected.

4. Articulated stirrup according to claim 1, characterized in that the supporting part (44) has a rough surface and / or recesses, in which the synthetic material is incorporated in the casting process when forming the plastic body (48).

5. Articulated stirrup according to claim 1, characterized in that the plastic body (48) is produced in the casting process, in particular injection molding process.

6. Articulated stirrup according to claim 1, characterized in that the two lower holding parts (42) are integrally connected by the support member (44).

7. Articulated stirrup according to claim 1, characterized in that the support member (44) by itself, without the plastic body (48), the static and dynamic requirements met, which are placed on the tread plate (20).

8. Articulated stirrup according to claim 1, characterized in that the U-shaped bracket (22) has a substantially metallic surface.