EP1044131A1

EP1044131A1 - Device for adjusting the position of a seat

Info

Publication number: EP1044131A1
Application number: EP99959225A
Authority: EP
Inventors: Dietmar Hofmann; Wilfried Hommel; Helmar Hommel
Original assignee: Hofmann Spezialmaschinen
Current assignee: Hofmann Spezialmaschinen
Priority date: 1998-10-26
Filing date: 1999-10-25
Publication date: 2000-10-18
Also published as: WO2000024629A1

Abstract

The invention relates to a device for adjusting the position of a seat, especially for bicycles having a seat post pertaining to the frame which comprises a mounting post for mounting a seat. The aim of the invention is to achieve a resilient and long-term stable seat position adjustment within a pre-determined adjustable range and to improve ease of assembly. To this end, two rods which are spaced apart are connected to one another at the mounting piece (18). The first rod is configured as a central rod (7, 46) of constant length having a guide rod (14, 60) which is provided for a first fixation within the seat post (3). Said first rod has an upper stopping element (10) and a lower stopping element (11) between which the guide rod (14,60) is arranged in such a manner that it can be slid along the rod and which serve to define the adjustable range (8). It further comprises an anti-torsional fixation (12) for the seat (5). The second rod is configured as a length-variable outer rod (6, 45) and contains a pneumatic spring rod (9) for length adjustment within the predetermined adjustable range (8). At least one fixing device (25, 26; 51) is provided at the free outer rod area for a second fixation at the exterior of the seat post (3). Said device determines a distance of the outer rod (6, 45) to the central rod axis (36). Means (13, 47) for actuating the pneumatic spring rod (9) are connected to the outer rod (6, 45) and serve to adjust the seat position within the adjustable range (8) as required.

Description

description

Saddle position adjustment device

The invention relates to a device for adjusting the saddle position, in particular for wheels with a seat tube belonging to the frame.

Such a device is described in the document DE 29 00 780 AI, in which the adjustment distance can be traversed by a saddle support tube arranged longitudinally displaceably in the interior of the seat tube. The saddle support tube contains a displaceable gas spring tube, which is locked in the interior of the seat tube in its area facing the bottom bracket via the end of an associated piston rod and can be moved axially depending on the actuation of a solution mechanism. A problem is that the attachment of the piston rod in the inner, lower region of the seat tube in principle involves an unacceptable effort and the corresponding appropriate height adjustment of the gas spring tube for the driver is therefore usually also inaccurate. Especially when the gas spring tube is replaced, access to its lower fastening is not possible. On the other hand, the formation of an anti-rotation device between the outer jacket of the gas spring tube and the guide bush in the seat tube is associated with a costly special manufacture of the outer jacket.

A similar problem exists for the device known from the publication DE 44 01 980 AI for height adjustment and damping of a bicycle saddle with a seat post which can be inserted into the seat tube of the bicycle and which has a gas spring tube which is arranged in the seat post and can be controlled via a lever and is surrounded by at least two additional tube guides The lever is arranged as part of a device for actuating the gas spring tube on the handlebar of the bicycle and is connected to the gas spring tube via an associated Bowden cable that ends near the saddle. The seat post with the displaceable gas spring tube is arranged such that it can be locked by means of a clamping lever located on the seat tube, the piston rod of the gas spring tube also being fastened within the seat tube here.

A problem here is also that the gas spring tube is also surrounded by a standpipe in the seat tube in addition to the guide tube, so that the gas spring tube is significantly reduced in cross section. An anti-twist device is attached to the outer casing of the stanchion tube, but this shows a higher level of precision and cost in the manufacture of the entire seat post. Furthermore, in the publication DE 42 18 986 AI a seat post for resilient and height-adjustable seats of bicycles and the like. described, which contains a fixed-fit seat tube, in which a gas spring tube, which is non-positively connected to a saddle block for the stroke and has a valve and a lifting rod, is arranged, a guide tube being axially adjustable and clampable in the seat tube and a in the guide tube Carrier tube is telescopically movable and secured against rotation relative to the guide tube by means of an anti-rotation device, the gas spring tube being positively fastened in the carrier tube and the valve of the gas spring tube being arbitrarily controllable by an actuating device provided in the saddle clamp for height adjustment of the saddle.

A problem is that the gas spring tube has to be enclosed in a costly manner with its own sliding guide jacket so that any jacket pressure on the gas spring tube is to be excluded and the anti-rotation elements can slidably engage in adapted, similar elements of the guide bush locked in the seat tube. The fitting of the gas spring tube, which is significantly reduced in diameter by the additional tubes, into the guide tube system is undoubtedly costly.

Furthermore, a bicycle saddle height adjustment support is described in the publication DE 94 05 449 Ul, which consists of a fastening rod for the saddle, an underlying slider with latching grooves and a gas spring tube connected to the slider and located inside the seat tube, the slider and the Fastening rod can be moved through the gas spring tube after the unlocking process. Can on the slider the saddle can be unlocked from the handlebars while driving by means of a ratchet device. The gas spring tube pushes the fastening rod up after unlocking.

One problem is that the pawl-related locking means that saddle suspension cannot take place despite the gas spring tube being present. Here too, the fastening of at least a part of the gas spring tube inside the seat tube is problematic.

All known solutions in which the piston rod of the gas spring tube or the gas spring tube itself is fastened within the seat tube are technically difficult to implement. A repair or replacement of the gas spring tube in the event of a defect is very complex from the outside.

Furthermore, the difficulty of a technical feasibility is demonstrated by the fact that when the gas spring tubes are installed in the seat tubes, the generally standardized diameter of the seat tube means that the outer diameter and thus the inner diameter of the gas spring tube must be reduced in such a way that a certain stability is achieved for the seals therein is no longer available. Because, the smaller the diameter of the gas spring tube, the higher demands are placed on the internal sealing properties between the two chambers and the piston rod. On the contrary, a borderline case is reached in which, among other things, the seals are squeezed too much, which generates large adhesive or frictional forces which counteract movement of the saddle into the high position in such a way that the restoring force required for this cannot be achieved .

If the piston rod is designed as a simultaneously sealed displacement and anti-rotation part in Gas spring tubes are the sealing problems and thus the frictional forces counteracting the displaceability are even greater.

A safety support device for saddles on bicycles is described in the publication DE 28 45 295 AI, which is intended to ensure the height adjustment of the saddle on the bicycle during the journey and after a break in the journey. The position of the saddle relative to the safety support device should not be changed, the driver keeping the legs largely stretched when the saddle is in a favorable high position, and when the saddle is low on the bicycle, both feet can be placed on the road at the same time. The downward movement of the support device takes place through the body weight of the moving person without changing the saddle position to the support device. An anti-rotation device is provided by the arch-like support device, which can be controlled with pawls and is located outside the seat tube, but which can touch the cross frame during up and down movements and can thus cause damage to the paintwork.

Another problem of the known device is that with this pawl-related support device only the high and low positions can be adjusted and, despite the spring element, in particular a strong compression spring inside the seat tube, a seat tube axial suspension is not possible.

From the document DE 39 37 563 AI a saddle lift for a bicycle is known, the saddle with a lift device in the manner of a height-adjustable, provided with a compression spring shock absorber on the seat tube of the bicycle frame and can be mounted via a Bowden cable with a switching element arranged on the handlebar Active connection is established and can be operated. The Fe- intended for the height adjustment the element is contained in the seat tube with the associated piston rod, the piston rod being formed with a toothed conductor into which a fixed, tooth-spaced locking state is achieved by means of a latch. Here, too, the internal design and fastening of the compression spring and the precise coordination of the piston rod and the compression spring arrangement are problematic.

Suspension of the saddle is not achieved through the two-layer setting. Likewise, an anti-rotation device and a seat tube-axial guideway of the piston rod via an only holding cover plate and by means of the latched compression spring within the seat tube are questioned.

In the document DE 28 24 974 AI a change in the saddle height for bicycles is described while driving, whereby the saddle is brought back into the high position by releasing the lock (s) and by releasing the lock (s) again becomes. The hexagon seat post is slidably guided in a hexagonal guide tube, which in turn is clamped in the upper part of the frame. The compression spring pushes the seat post up in the seat tube. When stopping, the driver's weight is sufficient to lower the saddle after releasing the lock.

A problem here is that only the high and low positions of the saddle can be adjusted and that the saddle cannot be suspended via the compression spring located in the seat tube.

A summary of the overall impression shows that, due to the respective disadvantages with regard to the encasing anti-rotation device on the gas spring tube, the fastening of the gas spring tube within the seat tube, and the number of those occurring on the gas spring tube with small cylinder diameters, it decreases achievable pressures and thus reduced restoring forces in gas spring tube-related adjustments as well as on the compression spring-related step-like two-layer or multi-layer settings of the unsprung saddle is entirely explainable that a production-ready device for the continuous saddle position adjustment could not previously be created.

Also, the solutions mentioned could hardly or not prevail in use, especially among senior drivers or slightly or severely physically disabled drivers, because, among other things, the automatic fastening of the gas spring tube and in particular the fastening of the piston rod provided with the inner rod release represent a complicated process and also cause great screwing or locking problems inside and outside the seat tube.

The invention has for its object to provide a device for saddle position adjustment, which is designed to technically realize the saddle position adjustment, which should be associated with a reduction in cost and an improvement in ease of installation. Furthermore, a resilient and long-term stable guidance of the saddle along the seat tube should be ensured. In addition, manual operation of the device for actuating the gas spring tube is to be made possible in a clear manner.

This object is achieved by the features of patent claim 1. In the device for adjusting the saddle position according to the preamble of patent claim 1, two rods are connected to one another at a spacing on the fastening stub, the first rod as a central rod with a surrounding one for a first attachment provided within the seat tube is made constant in length and is provided with an upper stop element and a lower stop element, between which the guide tube is displaceably arranged in a rod-guided manner and which serve to determine the adjustment distance, and has an anti-rotation device for the saddle and wherein the second rod is designed as a variable-length outer rod and contains a gas spring tube for changing the length within the specified adjustment distance, at least one holding device for a second attachment outside of the seat tube, by means of which a spacing of the outer rod from the central rod axis can be defined, is provided on the free outer rod end area, and a device for Actuation of the gas spring tube, with which the saddle position can be adjusted in the adjustment distance as required, is connected to the outer rod.

On the seat tube belonging to the frame, on which the saddle position adjustment can be carried out continuously within a predetermined adjustment distance, the two rods which are firmly connected to one another in the saddle area and which can be displaced together with the saddle are connected, the longitudinally variable outer rod being arranged outside the seat tube and the central rod at least is partially guided axially within the seat tube.

The device for actuating the gas spring tube consists at least of an actuatable lever on the frame, in particular on a handlebar, of a Bowden cable with associated Bowden cable, and of a release lever for contacting actuation of the inner rod release of the gas spring tube to initiate and carry out the pneumatic displacement of the piston rod. The specified adjustment distance is limited by a high position and a low position of the saddle.

The outer rod consists essentially of a piston rod-guided gas spring tube, the gas spring tube and the piston rod being arranged in such a way that the piston rod is attached either in the saddle area or on the seat tube and accordingly the gas spring tube on the seat tube or in the saddle area.

The central rod is surrounded by a short guide tube, in particular enclosed radially at a distance and arranged displaceably therein, the associated guide tube being insertable into the interior of the seat tube. In the assembly case, the guide tube is preferably clamped in the seat tube with a clamping screw provided on the seat tube. The guide tube and the seat tube are preferably flush at the upper end of the seat tube.

A radial spacing of the central rod from the guide tube can be achieved by one, two or more sliding bearings spaced apart in the direction of the seat tube - in particular an upper anti-rotation bush and a lower guide bush or, conversely, an upper guide bush and a lower anti-rotation bush or pressed. It is essential that at least one anti-rotation socket is available.

The anti-rotation sleeve serves as a guide and anti-rotation device, while the guide sleeve mainly serves to guide the central rod lengthways.

The lower stop element located on the central rod is fastened in such a way that an upward one Pulling out through the sockets is prevented. At the same time, the lower stop element fixes the high position, ie the highest sitting position for the driver, at which the bottom bracket can be properly operated with the feet by the stop on the respective lower bush. In the opposite direction, the upper stop element defines the low position by the stop on the guide tube or on the seat tube, at which the driver can safely touch the ground with both feet.

The adjustable upper stop element can be attached to the central rod at a distance from the attachment piece as required. It is also possible to dispense with the single-part upper stop element if the lower edge of the fastening piece is provided as the upper stop element.

The device for actuating the gas spring tube consists essentially of a lever with an associated lever device in a housing on the frame, in particular on the handlebar, from the Bowden cable with the associated cable and from an end release lever in the region of the receiving part of the Bowden cable.

The fastening socket fastened in the saddle area at the upper end of the central rod preferably consists of a lower bracket part and an upper cylinder part which is inserted into the preferably larger-diameter saddle fastening and serves for fastening the saddle.

Both the saddle and, in the opposite direction of the saddle, the central rod are firmly connected to one another, in particular screwed, by means of the fastening piece, the WO 00/24629 _] _] _ _ PCT / DE99 / 03456

Fastening socket for power transmission between the gas spring tube and the central rod is used.

At the lug part of the mounting stub, two bar-transverse, largely parallel lugs are welded approximately in the middle, to which a laterally directed central bar-spaced, upper fastening head is attached, which represents the upper end area of the variable-length outer bar and e.g. depending on the position, is connected at the end to the piston rod or the gas spring tube, in particular is screwed on. The two tabs have such a length that the two non-positively connected rods are preferably directed parallel to one another.

Depending on the position of the gas spring tube (near the seat tube or near the seat area), the upper fastening head can therefore be connected to the free end of the piston rod or to the gas spring tube.

The lower end area of the outer rod, which e.g. can represent a fastening head of the gas spring tube, can be screwed to a mounting device, in particular a mounting clamp, that surrounds the outside of the seat tube. The bracket clamp can be positively attached to the seat tube by means of a clamping lever, the height setting of the bracket clamp being dimensioned such that the piston rod or the gas spring tube can travel through the adjustment distance.

A mounted release lever can be attached to the mounting head, which is connected to the associated steering rod via a Bowden cable with preferably a lever of the device for actuating the gas spring tube, which can be located in its own housing alone. The housing for WO 00/24629 _ ι_ 2 - PCT / DE99 / 03456

the lever of the device for actuating the gas spring tube can also be attached to other parts of the bicycle as required.

Furthermore, a gas spring tube can be inserted in the variable-length outer rod, the release lever of which can be located at the lower end of the gas spring tube, in particular in the area of the mounting clamp. The associated Bowden cable is guided up to the area of the bracket clamp and can be locked there in a relatively stable manner on the seat tube. The bracket clamp is then preferably structurally and functionally expanded and can then be designed as a spring release holder.

Furthermore, the construction of the various types of wheels, in particular in the area of the seat tube due to additional frame support struts attached by the manufacturer, means that a parallel spacing between the outer rod and the seat tube can hardly be achieved.

In such a variant of the device for adjusting the position of the saddle, which takes into account the various construction methods, the spring release holder, which comprises at least one holding device for holding on the seat tube and a release block, is arranged with the piston rod of the gas spring tube attached to the seat tube and directed downwards there is a receiving part for the Bowden cable, the holding device adapted to the seat tube diameter being connected to the release block in such a way that deviations from the parallel position between the seat tube and the outer rod, in particular the gas spring tube, can be compensated for.

At the upper end of the seat tube there is preferably a protective device, in particular a scraper, cover or WO 00/24629 _ τ_ 3 _ PCT / DE99 / 03456

Sealing disc is present, which prevents dirt from entering the minimal spaces between the spaced bushings, preferably the upper bushing and the surface of the central rod. Even the upper bushing can be designed as a wiping element that repels dirt particles.

The central rod can have wedges and splines alternately on the circumference, preferably radially directed, which are each connected with splines and with splines of the anti-rotation bushing in a correspondingly positive manner.

The same key and groove fits can exist between the guide bush and the central rod. The double-spaced wedge-groove fits ensure a stable, stable displacement of the central rod in the adjustment distance.

The installation of a device for actuating the gas spring tube on the handlebar does not pose any problems for the rider in bicycles without gear shifts on the part of the overview. Currently, however, every newly manufactured bicycle is provided with one or two gear shifting devices in the bottom bracket area and / or in the hub area of the rear wheel. At least one lever device in the handlebar area is assigned to these gear shifting devices. Accordingly, each additional lever device on the handlebar is a burden for a driver, which he is often unable to cope with in difficult traffic situations.

Preferably, the device provided with a lever for actuating the gas spring tube for adjusting the saddle position can be integrated in one of the housings of the lever devices for the gear shifting devices. Instead of a lever, push buttons, touch sensors or the like can also be used. be used.

A combined lever device is preferably designed in such a way that the lever of the device for actuating the gas spring tube can be easily integrated into / in its housing, the actuation of the device being able to be carried out with the lever which moves the lever via the Bowden cable to the release lever passes on. Either a second lever can be provided or, to reduce the number of levers, the existing lever is preferably moved in positions transverse to the gear shift lever operating direction, so that a cross lever movement can be carried out.

The device thus consists of a two-rod system and a preferably lever-operated device for actuating a gas spring tube with the result of a controllable change in length of the outer rod, which moves the saddle and central rod, which is connected to it in a force-fitting manner, as required by the seat tube axially.

Advantageous refinements and developments of the invention are described in the subclaims.

The invention is explained in more detail using two exemplary embodiments with the aid of several drawings.

Show it:

1 is a schematic representation of a bicycle with the device according to the invention and with a saddle in a high position, 2 is a schematic representation of a bicycle with the device according to the invention and with a saddle in the low position,

3 shows a schematic illustration of the main part of the device according to the invention in a high position with a partial longitudinal section of the central rod leading into the seat tube with anti-rotation device in a first exemplary embodiment,

4 shows a schematic representation of the main part of the device according to the invention in the low position with a partial longitudinal section of the central rod leading into the seat tube with anti-rotation device according to FIG. 3,

5 is an enlarged view of the cross section along the line I-I in Fig. 3,

6 shows a schematic illustration of the independent device for adjusting the saddle in a second exemplary embodiment without attachment to a frame,

7 is a schematic perspective view of the spring release holder according to FIG. 6,

8 is a longitudinal section through the release block of FIG. 7,

9 is a side view of the release lever with a partial longitudinal section,

10 is a plan view of the clamp device with a displaceably fitted clamp clamp part in two positions, Fig. 11 is a schematic representation of the handlebar with lever devices for brakes, two lever devices for the gear shifting devices and an integrated lever of the device for actuating the gas spring tube and

Fig. 12 is a schematic representation of a lever integrated into a lever device for a gear shifting device of a device for actuating the gas spring tube in a front view.

In FIGS. 1 to 12, the reference symbols are retained throughout for the same parts with the same functions.

1, two bicycles 2 are shown in a schematic representation, on the seat tube 3 belonging to the frame 22, the device 1 according to the invention for adjusting the saddle position is attached in two extremely different saddle positions, with which the saddle position adjustment within a predetermined adjustment distance 8 is feasible. In Fig. 1 the saddle 5 is shown in its high position and in Fig. 2 in its low lying position. The predetermined adjustment distance 8 is located between the two limit positions.

The device 1 for adjusting the position of the saddle contains a fastening piece 18 for attaching a saddle 5, on which two rods 7, 6 are connected at a distance, the first rod as a central rod 7 with a surrounding guide tube provided for a first fastening within the seat tube 3 14 constant in length and provided with an upper stop element 10 and a lower stop element 11, between which the guide tube 14 is arranged in a rod-guided manner and which serve to fix the adjustment distance 8, and a Has anti-rotation device 12 for the saddle 5 and the second rod is designed as a variable-length outer rod 6 and contains a gas spring tube 9 for changing the length within the predetermined adjustment distance 8, with at least one holding device 25, 26 for a second fastening outside on the free outer rod end region Seat tube 3, with which a spacing of the outer rod 6 from the central rod axis 36 can be determined, is present and that a device 13 for actuating the gas spring tube 9, with which the saddle position can be adjusted in the adjustment distance 8 as required, with the outer rod 6 in Connection is established.

The device 1 is attached to the seat tube 3 belonging to the frame 2, on which the saddle position adjustment can be carried out continuously within a predetermined adjustment distance 8, the two rods 6, 7 being firmly connected to one another in the saddle area 4 and displaceable together with the saddle 5 are connected to the seat tube 3, the longitudinally variable outer rod 6 being arranged outside the seat tube 3 and the central rod 7 being at least partially axially guided within the seat tube 3.

The variable-length outer rod 6 moves both the saddle 5 and the central rod 7 in the direction of the seat tube.

The device 13 for actuating the gas spring tube 9 consists at least of an actuatable lever 41 on the frame 22, in particular on a handlebar 30, a Bowden cable 28 with an associated Bowden cable 86 attached to the lever 41 and a release lever 27 connected to the cable 86 for contacting actuation of the inner rod release 56 (FIG. 3) of the gas spring tube 9. 3,4 shows a first exemplary embodiment and the main part of the device 1 for adjusting the saddle position, in particular in a high position or in a low position. The outer rod 6 consists essentially of the piston rod-guided gas spring tube 9, the gas spring tube 9 and the piston rod 24 being arranged in such a way that the piston rod 24 in the saddle area 4 and, accordingly, the gas spring tube 9 are fastened to the seat tube 3.

The central rod 7 is arranged displaceably in the guide tube 14. The guide tube 14 is inserted into the seat tube 3 and clamped with the clamping screw 15 conventionally provided on the seat tube 3. The guide tube 14 and the seat tube 3 are preferably flush at the upper end of the seat tube 3. A slide bearing for the central rod 7 can be present within the guide tube 14. In particular, two plain bearings - a rotation lock bushing 16 and a guide bushing 17 - are firmly fitted or pressed, along which the central rod 7 is guided. The anti-rotation bushing 16 serves as a guide and anti-rotation device, while the guide bushing 17 serves for longitudinal guidance of the central rod 7.

The lower stop element 11 located at the free end of the central rod 7 is fastened in such a way that an upward pulling out of the bushes 16, 17 is prevented. At the same time, the lower stop element 11 defines the high position, ie the highest sitting position for the driver, by the stop on the guide tube 14 or the guide bushing 17, in which the bottom bracket, for example with straight legs, can be operated safely with the feet. Furthermore, the upper stop element 10 places the stop on the guide tube 14 or on the seat tube 3 or on a protective device located above it in the form of a sealing disk 31 Low position, in which the driver can safely touch the ground with both feet.

The movable upper stop element 10 can be fastened to the central rod 7 at a distance from the fastening stub 18 as required. The upper stop element 10 can also be dispensed with if the lower edge of the fastening piece 18 is provided as the upper stop element.

In the saddle area 4, the fastening piece 18 is fastened to the upper end of the central rod 7, which has an upper, preferably cylindrical part 19, which is inserted into the preferably larger-diameter saddle fastening 29 and serves to fasten the saddle 5. Furthermore, the attachment piece 18 is used to transmit forces between the gas spring tube 9 and the central rod 7. The attachment can be done by clamping on the saddle 5. On the lower bracket part 20 associated with the fastening piece 18, two bar-transverse brackets 21 are welded approximately in the middle, to which an upper fastening head 23, which is laterally spaced from the central bar axis 36, is fastened. The upper fastening head 23 represents the uppermost region of the variable-length outer rod 6 and is connected, in particular screwed, to the piston rod 24 of the gas spring tube 9. The tabs 21 are of such a length that the two rods 6, 7 are preferably directed parallel to one another. The tabs 21 can also be designed to conform to the shape of the frame construction.

The lower end region of the outer rod 6, which represents a tube fastening head 43 of the gas spring tube 9, is screwed to the mounting device located on the seat tube 3, in particular a mounting clamp 25. The bracket clamp 25 can be positively attached to the seat tube 3 with the aid of a clamping lever 26. Instead of the clamping lever 26, a preferably clamping locking device can also be used. Moving the bracket clamp 25 on the seat tube 3 is then preferably also possible without tools. The height setting of the mounting clamp 25 can be dimensioned such that the ground is securely touched with both feet only when bars 6, 7 are pressed into the saddle. The basic adjustment to the height of the driver can be carried out by adjusting the height of the mounting clamp 25.

On the upper mounting head 23, a pivotally mounted release lever 27 is attached, which is connected via a Bowden cable 28 to the lever 41 of the device 13 on the handlebar 30 (FIG. 1). The device 13 can be attached to the handlebar 30 alone in its own housing, but can also be attached to other locations on the bicycle 2 if these appear more suitable for the rider.

The outer rod 6 can also be attached laterally next to the seat tube 3 at another position, in particular due to the construction of the frame. However, the prerequisite is that there is sufficient space at the intended location.

A gas spring tube 9 can also be used for the device 1, the release lever 27 of which is located at the lower end of the gas spring tube 9 in the region of the mounting clamp 25. The Bowden cable 28 can here preferably be permanently installed on the frame 22, in particular on the seat tube 3, which represents a shortening of the Bowden cable and cable compared to the first described Bowden cable connection in FIGS. In the upper area of the seat tube 3 there is a protective device, in particular a wiper, sealing or cover disk 31, which is intended to prevent dirt from penetrating into the minimal gaps between the bushes 16 and 17 and the surface of the central rod 7. If the upper bushing is a guide bushing, it can itself be designed as a plastic protective device.

4 shows the main part of the device 1 in the low-lying position, the upper stop element 10 resting on the protective device 31. Depending on the body size, in particular the leg length of the driver, the position-adjustable upper stop element 10 can also be fastened to the central rod 7 at a provided location at a spaced location below the fastening socket 18.

5 shows a cross section through the upper region of the seat tube 3 in the enlarged representation. The central rod 7 alternately has wedges 32 and keyways 33 alternately on the circumference in the radial direction in the radial direction, each of which is correspondingly positively connected to keyways 34 and wedges 35 of the anti-rotation bushing 16. Such corresponding wedge-groove connections are preferably present in the area of the guide bushing 17.

In a second exemplary embodiment, the device 44 according to the invention, as shown in FIG. 6, likewise consists of a two-bar system - a variable-length outer bar 45 and a central bar 46 which is displaceably arranged in a guide tube 60, the outer bar 45 and the central bar 46 likewise being close to the end area on the one side near the saddle area are pivotally connected to one another, and from a preferably lever-operated device 47 for actuating the gas spring tube 9, with which a controllable Change in length of the outer rod 45 is achievable, which moves the saddle 5 and central rod 46, which is connected in a force-locking manner, to the seat tube 3 in the installation case, depending on the need and the instantaneous weight load, continuously and axially within a predetermined adjustment distance.

With a seat tube adapted downward directed piston rod 24 of the gas spring tube 9 pivotally mounted on the upper mounting piece 18, a spring release holder 50 is arranged at the free end of the piston rod 24, which spring consists of at least one mounting device 51 and one release block 52, wherein in the piston rod-held release block 52 by means of a in an existing, pivotable release shaft 55, which is oriented perpendicular to the direction of adjustment 53, an inner rod release 56 can be actuated within the piston rod 24 and the holder device 51 adapted to the seat tube diameter is connected to the release block 52 so that deviations of the outer rod 45 from the central rod axis 36 can be compensated are. With the preferably rod-like inner rod release 56, the pneumatic displacement of the piston rod 24 in the gas spring tube 9 can be triggered.

Furthermore, the device 44 is shown in FIG. 6 as an independent assembly. While the central rod 46 largely corresponds to the central rod 7, the outer rod 45 is arranged in reverse to the outer rod 6.

The piston rod 24 is arranged in such a way that the piston rod 24 is fastened outside on the seat tube 3 by means of the spring release holder 50 and accordingly the gas spring tube 9 is fastened to the tabs 21 of the upper fastening socket 18 receiving the saddle 5 by means of a securing screw connection 49. The spring release holder 50 in FIG. 7 essentially has the release block 52 with a receiving part 48 for the Bowden cable 63 and a holder device 51 for seat tube or frame clamping, which preferably connects to the release block 52 via an intermediate block 57 belonging to the holder device 51 stands.

The release block 52 is rigidly connected on the block side, preferably via the thread of the free end of the piston rod 24 to the gas spring tube 9 and on the underside of the block is pivotably connected to the holding device 51. The piston rod 24, which is externally threaded at its free end, is screwed into the existing matching internal thread of the release block 52 and is locked by means of a lock nut 58.

The central rod 46, like the central rod 7, has an upper and a lower stop element 10, 11 and at least as well has an anti-rotation device 12 for the saddle 5 and the associated guide tube 60, which can be plugged into the seat tube 3 and with which conventionally on the seat tube 3 existing clamping screw can be clamped. The guide tube 60, like the guide tube 14, represents a tube part which is substantially shorter than the central rods 7.46 and surrounds the central rod 7.46 and which, in the unmounted state, can be displaced along the respective central rod 7.46.

Within the guide tube 60, as in the guide tube 14, two slide bearings - preferably a lower anti-rotation bushing 61 and an upper guide bushing 62 - in which the central rod 46 is guided can also be firmly fitted or pressed. The anti-rotation bushing 61 serves as a guide and anti-rotation lock, while the guide bushing 62 serves to guide the central rod 46 in the longitudinal direction. The upper guide bushing 62 is preferably made of plastic or rubber material in order to scrape off possible sand grains or other dust-like particles before entering the inner region between guide tube 60 and central rod 46 due to the elastic material effect.

If the respective outer diameter of the guide tubes 14, 60 is significantly smaller than the inner radius of the seat tube 3 and as a result there is a considerable annular gap, then an adapter in the form of a spacer sleeve can be inserted between the guide tube 14, 60 and the seat tube 3 as an additional holding element that fills the annular gap Component be used.

The lower stop element 11 located at the free end of the central rod 46 is fastened in such a way that an upward pulling out of the bushing 61 is prevented. At the same time, the lower stop element 11 can be raised by the stop on the metallic anti-rotation bush 61, i.e. determine the highest seating position for the driver, at which the bottom bracket, e.g. with straight legs, can be operated safely with the feet. Furthermore, the upper stop element 10 defines the low position by the stop on the guide tube 60 or on the seat tube 3, at which the driver can have firm ground contact with both feet.

The upper stop element 10, which can be moved, can be located below the attachment piece 18 as required.

At the upper end of the central rod 46, the fastening piece 18 is fastened, which has an upper cylinder part 19 which is inserted into the preferably larger-diameter saddle fastening 29 and serves to fasten the saddle 5. Furthermore, the attachment piece 18 is fixed in the region of its lower tab part 20 with the central rod 46 connected. On the connecting piece 18, two tabs 21, which are preferably transverse to the bar, are welded to the associated tab part 20, spaced in the same direction and spaced apart, to which the tube mounting head 43 of the gas spring tube 9 is attached at the end. The fastening head 43 represents the uppermost region of the variable-length outer rod 45. The straps 21 have such a shape and length between the strap part 20 and a spaced mounting screw connection 49, on which the outer rod 45 is held, that the outer rod 45 is mounted has a sufficiently large distance from the seat tube 3. The tab part 20 thus serves to transmit forces between the gas spring tube 9, the outer rod 45 and the central rod 46.

The mounting device 51 can be attached to the seat tube 3 in a form-fitting manner. Moving the mounting device 51 during assembly on the seat tube 3 is possible. The height setting of the holding device 51 on the seat tube 3 can be dimensioned such that the driver safely touches the ground with both feet.

The release lever 55 held in it is attached to the release block 52 and can be connected via the Bowden cable 63 to the device 13 for actuating the gas spring tube 9 on the handlebar 30.

The gas spring tube 9 can also be installed at another position related to the seat tube 3, in particular with respect to the front view of the bicycle, to the side of the seat tube 3, which is dependent on the freedom of installation on the frame 22.

In FIG. 7, the trigger block 52, which is fixedly connected to the piston rod 24, is formed like a head. The cube-like or cuboid block head 64 is provided with a front, preferably head-connected, chin-like receiving part 48 of Bowden cable 63 and a rear block neck 66, which have lateral rectangular recesses 67, 68 in front view compared to block head 64.

In the area of the block head 64, the through-shaft 54, which can be designed in the manner of a vertically positioned elongated hole, is introduced, which has a triangularly cut-out recess 69 located at the top of the head in the middle above the elongated hole and which provides for a sufficient pivoting movement of the release lever 55 is provided. An end bevel 70 can also be provided on the head end for simplifying installation reasons.

In the area of the flat, preferably square head plate 71, a vertically directed internal threaded bore 72, as shown in FIG. 8, for the external thread of the piston rod 24 and a sensor bore 77 for the internal rod release 56 are made in the center. Outside the internal threaded bore 72 in the front direction of the block head 64, a blind bore 73, which crosses the through shaft 54, is provided inside the release block 52 for an insertable round web 74, which represents part of the detent-bearing support for the release lever 55.

In the downward receiving part 48, a Bowden cable fitting opening 105 and a smaller diameter rope passage opening 75 are provided, directed vertically to the block head 64. The receiving part 48 can also preferably be extended in such a way that, for the purpose of simplifying the production of the release block 52, the chin-like receiving part 48 can pass into the block neck 66, as shown in FIG. 8, in order to improve the Bowden cable connection. The block neck 66, which is narrowed laterally around the recesses 67, 68 with respect to the block head 64, has, in extension of the internally threaded bore 72, a transverse bore 78 shown in FIG. 8, which is used for the connection to the holding device 51, in particular to the intermediate block 57, by means of a holder screw connection 59 is provided, which can represent a securing bracket screw.

The vertical internal threaded bore 72 for the associated piston rod external thread can preferably be made up to the upper inner wall 76 of the through-shaft 54, the smaller diameter sensor bore 77 preferably being made for the internal rod release 56.

The release lever 55 provided for actuating the inner rod release 56 in FIG. 9 is a parallelepiped-shaped longitudinal body and has an approximately 79 through-center, preferably cross-sectionally rectangular recess 79, the transverse recess 79 dividing the longitudinal body into two lever arms 80, 81. With the release lever 55 installed in the passage shaft 54 of the release block 52, the recess 79 rests on the circular web 74, about which the release lever 55 can be pivoted.

The width of the release lever 55 is at least somewhat smaller than the width of the elongated hole in the through shaft 54.

The one front lever arm 80 has a receiving bore 83, which is perpendicular to the recess 79 and the longitudinal axis 82, and a locking bore 84, which is perpendicular to the longitudinal axis 82 and into which a locking screw 85 (FIG. 7) can be screwed. The Bowden cable 86 is introduced into the receiving bore 83 and can be locked in a clamping manner by the locking screw 85. The other rear lever arm 81 extends into the area of the sensor bore 77 in order to contact the inner rod release 56 in the event of a cable pull movement.

The holding device 51 preferably consists of the intermediate block 57 and the clamp device 87, which are connected to one another by the fixed screw connections 88, 89 (only shown schematically in FIG. 7).

The intermediate block 57 can be designed as a solid parallelepiped-shaped longitudinal body, which on one side has a fork-shaped two parallel-spaced longitudinal side fork parts 90, 91, in which there are conforming, opposing transverse bores, the side around the recesses 67, 68 in the fork parts 90, 91 narrowed block neck 66 is fitted in such a way that the conforming transverse bores with the neck transverse bore 78 form a passage which is provided for the securing fastening screw connection 59.

Furthermore, the intermediate block 57 has in its solid part two spaced-apart transverse bores which serve as receptacles for the fixed screw connections 88, 89 with the clamp device 87. Between the mounting screw connections 88, 89, approximately in the middle in the solid part of the intermediate block 57, there is an internal threaded bore 92 perpendicular to the transverse bores for an adjusting screw 93 (FIG. 7) which can be actuated with an Allen key and which is used for the weight-bearing locking the mounting device 51 on the seat tube 3 plays a role.

Between the intermediate block 57 and the release block 52, a flexible, variable mounting screw connection 59 is thus formed, in particular by means of a pivot pin which is interlocked with a snap ring, so that the positions of the Gas spring tube 9 to the seat tube 3 can be corrected during and after assembly.

FIGS. 7, 10 serve to explain the clamp device 87, the clamp device 87 being shown in a top view in FIG. 10. The associated approximately U-shaped clamp 94 has, in the region of its free clamp legs 95, 96, one above the other, holes 97, 98 arranged approximately on the corner region side, which correspond in their spacing to the transverse bores in the intermediate block 57 in such a way that the fixed screw connections 88, 89 are possible are.

7 and 10, the inner, concavely curved clamp clamping part 104, which is counterpart to the U-bend part of the clamp 94, is shown with an adjusting screw 93 in the starting position 99 before assembly and in a seat tube locking position 100.

A plastic coating 101 or another elastic / plastic coating is preferably applied to the surface of the clamp part 104 in order to protect the adhesion to the seat tube 3 on the one hand and the paint on the seat tube 3 on the other.

Due to the thread-like integration of the adjusting screw 93 in the intermediate block 57 in the opposite direction to the curved part of the clamp 94, in particular in the internal threaded bore 92, the concavely curved clamp clamping part 104 is adjustable in the displacement direction 102 (arrow) either for locking or for releasing the seat tube 3. The adjusting screw 93 has a rotational connection in the form of a threaded pin 103 to the clamp clamping part 104, so that the clamp clamp part 104 cannot be rotated, but rather only in one direction, namely linearly directed into the specified displacement directions 102, is displaceable. Depending on the size of the curved part of the clamp 94 and the length dimension of the clamp legs 95, 96, the spacing of the outer rod 45 in comparison to the seat tube 3 or to the central rod axis 36 can be set.

In Fig. 11, the handlebar 30 is shown schematically, on which there are lever devices 37, 38 for the two bicycle brakes and lever devices 39, 40 for the two gear shifting devices in the bottom bracket area and in the hub area of the rear wheel.

It is expedient not to attach another, possibly confusing to the driver, additional lever device on the handlebar 30 for the saddle position adjustment. The device 13 for actuating the gas spring tube 9 with its lever 41 for the saddle position adjustment and the Bowden cable 28 can also be arranged alone in a housing on the handlebar 30, but because of the simplification and overview it can also be in the housing of the lever devices 40 or . 39 integrated for the gear shifting devices.

The inner structure of the lever device 40 is preferably designed such that a lever 41 of the device 13 for actuating the gas spring tube 9 can be inserted therein, the actuation being able to be carried out, for example, by pressing the lever 41. The trigger lever 27 (in FIGS. 3, 4) on the upper fastening head 23 can be actuated with the lever 41. The lever 42 arranged in FIG. 12 can be used, for example, to adjust one of the two possible gear shifting devices. The same applies to the device 47 for actuating the gas spring tube 9 in the second exemplary embodiment of the device 44. There, the lever 41 is connected via the Bowden cable 63 to the release lever 55 on the release block 52 in order to trigger the inner rod release 56 and thus the pneumatic process of the piston rod adjustment which is inherent in the gas spring tube 9.

An assembly of the device 1 for adjusting the saddle position on the bicycle can be carried out as follows: after inserting the central rod 7 into the guide tube 14 and attaching the lower stop element 11, the saddle 5 is screwed onto the fastening socket 18 and the Bowden cable 28 of the associated device 13 with the lever device 40 connected to the handlebar 30. Instead of the rigid seat post, the guide tube 14 is inserted into the seat tube 3 with the central rod 7 displaceable therein. The guide tube 14 is preferably flush with the upper end of the seat tube 3. The clamping tube 15 locks the guide tube 14 in a locking manner. The outer rod 6 with the integrated gas spring tube 9 is attached to the seat tube 3 with the mounting clamp 25 and the clamping lever 26. The low-lying position of the saddle 5 can be set such that only when the bars 6, 7 are pressed in, ie either up to the upper stop element 10 or to the lower edge of the fastening connector 18 on the sealing disk / the upper stop element 10, with both feet of the driver sure the ground is touched. If there are lever devices 39, 40 for the gear shifting devices, the lever 41 can optionally be inserted into one of the two lever devices 39, 40. Such multi-switchable lever devices 40-41, 40-42 are preferably clearer than a larger number of them on the handlebar 30. Depending on the design of the outer rod 6, one of the possible operations of the lever 41 leads to the following reactions: In general, the lever 41 is not operated during the bicycle movement. However, the lever 41 can also be actuated while driving in order to adjust a different, eg, more body-friendly sitting position. When there is an intended stop, the lever 41 is actuated such that the weight of the driver lowers the saddle 5 until the desired position of the saddle is reached or finally the determined, upper stop element 10 touches the seat tube 3 and the driver with both feet can stand securely on the floor. When driving on, the lever 41 is actuated again and the saddle 5 is lifted upwards into the desired higher seating position due to a reduced load on the device 1 due to the arrival of the weight on the pedals of the wheel.

A similar assembly of the device 44 with the assignment of the same device 47 for actuating the gas spring tube 9 can be carried out analogously.

In particular, the devices 1.44, which are designed as independent assemblies, can be attached to any two-wheeler without or with a motor or on Velomed's medical devices and are characterized by a largely problem-free assembly, which is associated with ease of assembly, in particular with regard to the mounting, and by simple Change from bike to bike among themselves. It is also advantageous that a large number of commercially available components can be used for the construction of the devices 1.44 for adjusting the saddle position.

Reference number list 1 device 2 bicycle 3 seat tube

4 saddle area

5 saddle

6 outer rod

5 7 central rod

8 adjustment distance

9 gas spring tube

10 upper stop element

11 lower stop element

10 12 Anti-rotation device

13 device for actuating the gas spring tube

14 guide tube

15 clamping screw

16 upper anti-rotation socket

15 17 lower guide bush

18 mounting sockets

19 cylinder part

20 tab part

21 tabs

20 22 frames

23 upper fastening head

24 piston rod

25 mounting clamp

26 clamping lever

25 27 release lever

28 Bowden cable

29 Saddle attachment

30 handlebar

31 Protective device

30 32 wedge

33 keyway

34 keyway

35 wedge

36 central rod axis 37 lever device

38 lever device

39 lever device

40 Lever device 5 41 lever

42 levers

43 pipe mounting head

44 Device 45 outer rod

10 46 central rod

47 Device for actuating the gas spring tube

48 recording part

49 Bracket screw connection

50 spring release holder

15 51 Bracket device

52 trip block

53 direction of adjustment (arrow)

54 passage shaft

55 release lever

20 56 Inner rod release

57 intermediate block

58 lock nut

59 Bracket screw connection

60 guide tube

25 61 lower anti-rotation socket

62 upper guide bush

63 Bowden cable

64 block head 66 block neck

30 67 recess

68 recess

69 recess

70 bevel

71 headstock 72 internal threaded hole

73 blind hole

74 circular walkway

75 Rope passage opening 5 76 inner wall

77 Sensor bore 78 bore

79 recess

80 front lever arm 10 81 rear lever arm 82 longitudinal axis

83 Location hole

84 locking hole

85 Locking screw 15 86 Bowden cable

87 clamp device

88 Fixed screw connection

89 Fixed screw connection

90 Long side fork part 20 91 Long side fork part

92 internal threaded hole

93 adjusting screw

94 clamp

95 clamp legs 25 96 clamp legs

97 holes

98 holes

99 Starting position

100 seat tube locking position 30 101 plastic coating

102 direction of displacement

103 grub screw

104 clamp part

105 Bowden cable fitting opening

Claims

claims

1. A device for adjusting the saddle position, in particular for bicycles with a seat tube belonging to the frame, containing a fastening socket for attaching a saddle, characterized in that two rods are connected to one another at a distance from the fastening socket (18), the first rod acting as a central rod (7 , 46) with a surrounding guide tube (14, 60) provided for a first attachment within the seat tube (3), and with an upper stop element (10) and a lower stop element (11), between which the guide tube (14, 60 ) is displaceably arranged in a rod-guided manner and is used to determine the adjustment distance (8), is provided and has an anti-rotation device (12) for the saddle (5) and the second rod is designed as a variable-length outer rod (6, 45) and for Changes in length within the predetermined adjustment distance (8) contains a gas spring tube (9), being on the free outer rods at least one holding device (25, 26; 51) for a second fastening outside on the seat tube (3), with which a spacing of the outer rod (6, 45) from the central rod axis (36) can be determined, and that a device (13, 47) for actuating the gas spring tube ( 9), with which the saddle position in the adjustment distance (8) can be adjusted as required, is connected to the outer rod (6.45).

2. Device according to claim 1, characterized in that it is attached to the frame (2) belonging to the seat tube (3) on which the saddle position adjustment can be carried out continuously within a predetermined adjustment distance (8), the two in the saddle area (4) Rods (6.45; 7.46) which are firmly connected to one another and which can be displaced together with the saddle (5) are connected to the seat tube (3) in such a way that the variable-length outer rod (6.45) outside the seat tube (3) arranged and fastened to the seat tube (3) and the central rod (7,46) is arranged at least partially axially guided within the seat tube (3).

3. Apparatus according to claim 1 and / or 2, characterized in that the device (13,47) for actuating the gas spring tube (9) at least from a lever located in a housing (41) on the frame (22), in particular on a handlebar (30), consists of a Bowden cable (28,63) with associated Bowden cable (86) and a release lever (27,55) for contacting actuation of the inner rod release (56) of the gas spring tube (9).

4. The device according to claim 1, characterized in that the adjustment distance (8) from the high position and from the low position of the saddle (5) is limited.

5. The device according to at least one of the preceding claims, characterized in that the outer rod (6.45) consists essentially of a piston rod-guided gas spring tube (9), the Gas spring tube (9) and the piston rod (24) are arranged so that the piston rod (24) either in the saddle area (4) or on the seat tube (3) and accordingly the gas spring tube (9) either on the seat tube (3) or in the saddle area ( 4) are attached at each end.

6. The device according to at least one of the preceding claims, characterized in that the guide tube (14, 60) encloses the central rod (7) radially spaced.

7. The device according to claim 6, characterized in that the central rod (7,46) inside the guide tube (14,60) in a slide bearing, in particular longitudinally between two in the guide tube (14,60) firmly pressed plain bearings - an upper anti-rotation bushing ( 16) and a lower guide bush (17) or a lower anti-rotation bush (61) and an upper guide bush (62) - is fitted and enclosed.

8. The device according to claim 7, characterized in that the anti-rotation bushing (16,61) serve as a guide and anti-rotation device and the guide bushing (17,62) mainly for longitudinal guidance of the central rod (7,46).

9. The device according to at least one of the preceding claims, characterized in that the existing at the upper end of the central rod (7,46) attachment piece (18) has an upper cylinder part (19), which is preferably larger in diameter The saddle attachment (29) can be inserted and is used to attach the saddle (5), the attachment piece (18) being firmly connected in the bracket part (20) to the central rod (7,46) and for transmitting forces between the outer rod (6,45), in particular the gas spring tube (9) and the central rod (7,46).

10. The device according to claim 9, characterized in that on the tab part (20) of the fastening piece (18) two preferably rod-transverse tabs (21) are welded, at the free end regions of a laterally directed, from the central rod axis (36) spaced fastening head ( 23) is attached, which represents the uppermost region of the variable-length outer rod (6) and is preferably connected, in particular screwed, to the piston rod (24) of the gas spring tube (9), the tabs (21) having a length such that on Seat tube (3) preferably the two rods (6, 5; 7, 46) are directed largely parallel to one another and a frame-structural independence of the outer rod (6, 46) from the seat tube (3) can be achieved.

11. The device according to at least one of the preceding claims, characterized in that at the lower end region of the outer rod (6), in particular on the pipe mounting head (43) of the gas spring tube (9), a mounting device, in particular a mounting clamp (25) or with position-reversed gas spring tube (9) At least one holding device (51) is present on the piston rod (24) and can be fastened, preferably clamped or screwed, to the seat tube (3) outside.

12. The device according to at least one of the preceding claims, characterized in that the mounting clamp (25) by means of a clamping lever (26) is positively attached to the seat tube (3).

13. The device according to at least one of the preceding claims, characterized in that on the upper fastening head (23) is mounted a trigger lever (27) which is connected via a Bowden cable (28) with the lever (41) of the device (13,47 ) for actuating the gas spring tube (9) is preferably connected to the associated steering rod (30).

14. The device according to at least one of the preceding claims, characterized in that in the variable-length outer rod (6), a gas spring tube (9) is integrated such that its release lever (27) at the lower end of the gas spring tube (9) in the area of Bracket clamp (25) is located.

15. The device according to at least one of the preceding claims, characterized in that the lever (41) of the device (13) for actuating the gas spring tube (9) is contained in a separate, preferably attached to the handlebar (30) housing.

16. The device according to at least one of the preceding claims, characterized in that that in the upper area of the seat tube (3) there is a protective device (31), in particular a scraper, cover or sealing disk, which prevents dirt from penetrating into the minimal gaps between the upper bush (16, 62) and the Avoid surface of the central rod (7.46).

17. The device according to at least one of the preceding claims, characterized in that the upper stop element (10) from the mounting piece (18) is attached to the central rod (7, 46) so that it can be moved and moved.

18. The device according to at least one of the preceding claims, characterized in that the central rod (7.46) as an anti-rotation device (12) on the circumference alternately preferably has splines (32) and splines (33), each with splines (34) and with Wedges (35) of the anti-rotation bushing (16.61) and the guide bushing (17.60) are positively connected.

19. The device according to at least one of the preceding claims, characterized in that the central rod (7.46) is a hollow rod.

20. The device according to at least one of the preceding claims, characterized in that in a gas spring tube (9) attached to the tabs (21) at the lower free end of the piston rod (24) a spring release holder (50) is arranged, which contains at least one release block (52) and at least the seat tube diameter-adjustable holder device (51), the holder device (51) being connected to the release block (52) 5 so that deviations from the parallel spacing between the seat tube (3) and the outer rod (6.45) can be compensated.

21. The device according to at least one of the preceding claims 10, characterized in that the receiving part (48) for the Bowden cable (63) with the associated rope (86) is provided on the rod-mounted release block (4).

15 22. Device according to at least one of the preceding claims, characterized in that the holding device (51) with the release block (52) preferably via one to the holding device

20 (51) associated intermediate block (57) is connected.

23. The device according to at least one of the preceding claims, characterized in that the release block (52) on the top of the block rigidly preferably 25 via the thread of the free end of the piston rod (24) with the gas spring tube (9) and on the underside of the block with the mounting device (51) is preferably screw-connected.

24. The device according to at least one of the preceding claims, characterized in that between the intermediate block (57) and the release block 5 (52) there is a securing bracket screw (59).

25. The device according to at least one of the preceding claims, characterized in that in the case when the outer diameter of the guide tube

10 res (14.60) of the central rod (7.46) is significantly smaller than the inside diameter of the seat tube (3) and therefore there is an annular gap between the two tubes (14, 3; 60, 3) between the guide tube (14.60 ) and the seat tube (3) a longitudinally cut cylinder-like di-

15 punch sleeve is inserted.

26. The device according to at least one of the preceding claims, characterized in that in each case the upper guide bushing (16, 62) consists of plastic-like or rubber material in order to avoid possible sand grains or other dust-like impurities before entering the through the elastic material effect Push the inner area between the guide tube (14,60) and the central rod (7,46).

25 27. Device according to at least one of the preceding claims, characterized in that on the release block (52) a pivoting release lever (55) held in it is attached, which over

30 the Bowden cable (63) with the device (47) is preferably connected to a handlebar (30), wherein depending on requirements, the trigger lever (55) can be pivoted against the inner rod release (56) and triggers the gas spring effect.

28. The device according to at least one of the preceding claims 5, characterized in that the release lever (55) provided for the actuation of the inner rod release (56) is a parallelepipedal longitudinal body which is divided into two lever arms (80, 81) - in a front 10 whose lever arm (80) and is divided into a rear lever arm (81).

29. The device according to at least one of the preceding claims, characterized in 15 that the front lever arm (80) receives the Bowden cable (86) and the rear lever arm (82) is provided for actuating the inner rod release (56).

30. The device according to at least one of the preceding claims,

20 characterized in that the holding device (51) preferably consists of the intermediate block (57) and of the clamp device (87) which are firmly connected to one another by at least two fixed screw connections (88, 89).

25 31. Device according to at least one of the preceding claims, characterized in that the intermediate block (57) is designed as a solid cuboid longitudinal body, which is on a to the piston rod

30 ge (24) directed side two parallel spaced Longitudinal fork parts (90,91), in which the release block (52) is fitted and is held with a securing bracket screw (59).

32. Device according to at least one of the preceding claims, characterized in that the clamp device (87) has an approximately U-shaped clamp (94) which, in the region of its free clamp legs (95, 96), does not have any between the clamp legs (95,96) inserted intermediate block (57) is firmly connected.

33. Device according to at least one of the preceding claims, characterized in that within the clamp (94) a concave curved clamp clamp part (104) which is opposed to the U-arch part and has an adjusting screw (93) connected to the intermediate block (57). is present, which can be moved into different positions (99, 100) assigned to the seat tube outer diameter - a starting position (99) before assembly and a seat tube locking position (100) after assembly.

34. Device according to at least one of the preceding claims, characterized in that a plastic coating (101) is applied to the surface of the clamp part (104) in order to protect at least the paint on the seat tube (3).

35. Device according to at least one of the preceding claims, characterized in that there are at least one lever device (37, 38; 39, 40) for bicycle brakes and / or for gear shifting devices in the bottom bracket area and in the hub area of the rear wheel on the handlebar (30) , Preferably the lever (41) of the device (13, 47) for actuating the gas spring tube (9) is integrated into a housing of one of the lever devices (37, 38; 39, 40), in particular for the gear shifting devices.

36. Device according to claim 35, characterized in that the lever device (40) for the gear shifting device is preferably designed such that in one of the housings the lever (41) of the device (13, 47) for actuating the gas spring tube (9) is included, wherein the actuation of the lever (41) can be carried out, preferably parallel or transversely, which moves the lever via the Bowden cable (28, 86) to the release lever (27, 55) on the fastening head (23) or on the release block (52 ) passes on.

Seven sheets of drawings.