Abstract
A telescopic saddle support for supporting a bicycle saddle includes a support unit to be secured on or in the frame of a bicycle; a telescoping unit to be moved in a guided manner relative to the support unit within a specified telescoping range, the telescoping range extending from a minimum length of the saddle support to a maximum length of the saddle support; and a coupling device arranged between the telescoping unit and the support unit. A coupling device part which is paired with the support unit is connected to the support unit in a fixed manner, and the telescoping unit can be coupled to the support unit via the coupling device. A blocking device releasably blocks the guided telescoping movement of the telescoping unit relative to the support unit. The coupling device has an adjustment mechanism via which the maximum length of the saddle support can be adjusted, an axial force which acts on the telescoping unit being transmitted to the support unit via the coupling device.
Claims
1. A telescopic seatpost for mounting a bicycle saddle, comprising: a support unit which can be fixed to or in a frame of a bicycle, a telescopic unit moveably guided within a predetermined telescopic range relative to the support unit, wherein the telescopic range extends from a minimum longitudinal extent of the seatpost to a maximum longitudinal extent of the seatpost, a coupling device arranged between the telescopic unit and the support unit, wherein a part of the coupling device, that is associated with the support unit, is fixedly connected to the support unit and wherein the telescopic unit can be coupled to the support unit by way of the coupling device, and a blocking device for releasably blocking the guided telescopic movement of the telescopic unit relative to the support unit, wherein the coupling device has an adjustment mechanism, by way of which the maximum longitudinal extent of the seatpost is adjustable, and transmission of an axial force acting on the telescopic unit to the support unit is effected by way of the coupling device.
2. The telescopic seatpost as set forth in claim 1, wherein the telescopic unit can be coupled to the support unit at at least two different coupling positions by the adjustment mechanism.
3. The telescopic seatpost as set forth in claim 1, wherein the telescopic unit is of a tubular configuration and the support unit and/or the coupling device is at least partially arranged within the telescopic unit.
4. The telescopic seatpost as set forth in claim 1, wherein the adjustment mechanism of the coupling device has an adjustment part associated with the telescopic unit, preferably in the form of a sleeve, a spindle or a toothed rack, with a profiled notching, and a coupling part associated with the support unit and having a corresponding profiled notching for positively locking connection of the telescopic unit to the support unit.
5. The telescopic seatpost as set forth in claim 1, wherein the profiled notching in the adjustment part is in the form of a thread or in the form of, preferably peripherally limited, radial grooves or radial projections and/or the profiled notching in the coupling part is in the form of a thread or in the form of, preferably peripherally restricted, radial grooves or radial projections.
6. The telescopic seatpost as set forth in claim 4, wherein the adjustment part is mounted rotatably in or to the telescopic unit and the telescopic unit can be coupled to the support unit by a rotary movement of the adjustment part relative to the coupling part.
7. The telescopic seatpost as set forth in claim 6, wherein the adjustment part is mounted rotatably in an inner region of the tubular telescopic unit and is preferably arranged coaxially with the telescopic unit.
8. The telescopic seatpost as set forth in claim 1, wherein the telescopic unit has an axial and/or radial opening, through which the coupling device is actuable from outside the telescopic unit, preferably by a lever.
9. The telescopic seatpost as set forth in claim 1, wherein the adjustment part of the adjustment mechanism is rotatable relative to the telescopic unit through the axial and/or radial opening in the telescopic unit.
10. The telescopic seatpost as set forth in claim 4, wherein the coupling part is mounted non-rotatably to the support unit.
11. The telescopic seatpost as set forth in claim 1, wherein the coupling device is actuable independently of the blocking device.
12. The telescopic seatpost as set forth in claim 1, wherein the guided movement is a positively guided translatory telescopic movement, that is restricted by the predetermined telescopic range, of the telescopic unit relative to the support unit.
13. The telescopic seatpost as set forth in claim 1, wherein the blocking device is hydraulic.
14. The telescopic seatpost as set forth in claim 1, wherein the support unit has a fixing device and the saddle support can be connected, preferably in positively locking relationship, to a frame of a bicycle by way of the fixing device.
15. The telescopic seatpost as set forth in claim 1, wherein the blocking device has a force storage means, preferably a pneumatic force storage means.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0043] Further details and advantages of the present invention are described more fully hereinafter by means of the specific description with reference to the embodiments illustrated in the drawings in which:
[0044] FIGS. 1a through 1f are side and sectional views of a first embodiment of the seatpost, wherein the seatpost is in a coupled state with a substantially maximum longitudinal extent of the seatpost,
[0045] FIGS. 2a through 2e are side and sectional views of a first embodiment of the seatpost, wherein the seatpost is in an uncoupled state with a longitudinal extent of the seatpost, that is reduced in relation to FIG. 1,
[0046] FIGS. 3a through 3e are side and sectional views of a first embodiment of the seatpost, wherein the seatpost is in a coupled state with a longitudinal extent of the seatpost, that is reduced in relation to FIG. 1,
[0047] FIGS. 4a through 4g are side and sectional views of a second embodiment of the seatpost, wherein the seatpost is in a coupled state with substantially maximum longitudinal extent of the seatpost,
[0048] FIGS. 5a through 5f are side and sectional views of a second embodiment of the seatpost, wherein the seatpost is in an uncoupled state with a longitudinal extent of the seatpost, that is reduced in relation to FIG. 4,
[0049] FIGS. 6a through 6e are side and sectional views of a second embodiment of the seatpost, wherein the seatpost is in a coupled state with a longitudinal extent of the seatpost, that is reduced in relation to FIG. 4, and
[0050] FIGS. 7a and 7b are a comparison of sectional views of a second embodiment of the seatpost in a coupled and an uncoupled state.
DETAILED DESCRIPTION OF THE INVENTION
[0051] Figure is shows a first embodiment of a seatpost 1 arranged in the seat tube of a frame 18. The telescopic unit 3 which partially projects out of the frame 18 and has a saddle clamp 17 for mounting a bicycle saddle is visible from the exterior. The seatpost 1 is connected to the frame 18 by way of the fixing device 13. In the illustrated embodiment the telescopic unit 3 has a radial opening 9 through which the coupling device 4 (see also FIG. 1b) can be actuated from outside the telescopic unit 3 by way of a lever 10 projecting out of the radial opening 9.
[0052] In this embodiment of the seatpost 1 the blocking device 5 is in the form of part of the support unit 2.
[0053] The sectional planes B-B, C-C and L-L shown in FIGS. 1a and 1b are shown in FIGS. 1c, 1d and 1e respectively.
[0054] FIG. 1b shows a sectional view along a longitudinal axis of the seatpost 1 of FIG. 1a (line D-D in FIG. 1d). A support unit 2 in a design configuration of a piston with piston rod 15, mounted in a cylinder 14, can be seen in the sectional view. Arranged between the telescopic unit 3 and the support unit 2 is a coupling device 4 (for closer details see FIG. 1d), by means of which the telescopic unit 3 is coupled to the support unit 2. In the illustrated embodiment the coupling device 4 has an adjustment mechanism 6 having an adjustment part 7 associated with the telescopic unit 3 in the form of a toothed rack 12 and a coupling part 8 associated with the support unit 2. The adjustment part 7 in the form of the toothed rack 12 is mounted coaxially and rotatably in an inner region of the telescopic unit 3 which is of tubular configuration in the form of the telescopic tube 16. In this embodiment the adjustment part 7 is mounted in the head 31 of the telescopic unit 3 by way of the head 23 of the toothed rack 12 and is advantageously suited for the transmission of axially acting forces.
[0055] The seatpost 1 is disposed in a coupled state (see in that respect FIG. 1d) with substantially the maximum longitudinal extent of the seatpost 1 (characterised by the protrusion xi of the telescopic unit 3 out of the frame 18).
[0056] A comparison with FIG. 1a shows that in this embodiment the adjustment part 7 in the form of the toothed rack 12 of the adjustment mechanism 6 is rotatable relative to the telescopic unit 3 through the radial opening 9 in the telescopic unit 3. In that case the coupling part 8 is advantageously mounted non-rotatably to the support unit 2 and is also secured against rotation with respect to the telescopic unit 3 (see in that respect also FIG. 1d).
[0057] Figure is shows a sectional view along the line B-B shown in FIG. 1a. In this case the section is from the exterior inwardly through the saddle clamp 17, the telescopic tube 16 and the head of the toothed rack 12. It is possible to see the opening 9 provided radially in the head 31 of the telescopic unit 3 and the lever 10 connected to the head 23 of the toothed rack 12. It is also possible to see, along the longitudinal axis of the telescopic tube 16, at the inside thereof, grooves 20 which are provided therein.
[0058] It can be provided that the grooves 20 in the telescopic tube 16 are releasably closed at the lower end of the telescopic tube 16 whereby unintended complete removal of the telescopic unit 3 from the seatpost 1 can be prevented.
[0059] FIG. 1d shows a sectional view along line C-C in FIG. 1a. In this case the section is from the exterior inwardly through the telescopic tube 16, the coupling part 8 and the toothed rack 12. In that respect it can be seen that the profiled notching in the adjustment part 7 which is in the form of the toothed rack 12 (see also FIG. 1b) are in the form of peripherally limited radial projections 21 (in essence teeth on the toothed rack 12) (see also Figure if). The radial projections 21 are in positively locking engagement with profiled notchings suitably provided in the coupling part 8 and in the form of radial grooves 22 (similarly to an interrupted female thread) for positively lockingly connecting the telescopic unit 3 to the support unit 2. In this embodiment the coupling device 4 is formed by the radial projections 21 in the adjustment part 7 in the form of the toothed rack 12, and the corresponding profiled notchings in the form of radial grooves 21 in the coupling part 8.
[0060] The telescopic unit 3 can be coupled to the support unit 2 at a plurality of different coupling positions by the plurality of the radial projections 21 and the profiled notchings in the form of radial grooves 22.
[0061] An axial force can be transmitted between the telescopic unit 3 and the support unit 2 in a coupled state by the positively locking connection of the telescopic unit 3 to the support unit 2 by way of the radial projections 21 and the corresponding profiled notchings in the form of radial grooves 22.
[0062] In addition FIG. 1d shows sliding groove blocks 19 which are formed or arranged on the coupling part 8 and which are mounted in grooves 20 in the telescopic tube 16. Rotation of the coupling part 8 with respect to the telescopic tube 16 can be prevented by the sliding blocks 19 and the grooves 20.
[0063] FIG. 1e shows a sectional view along line L-L in FIG. 1b. In this case the section is from the exterior inwardly through the frame 18, the telescopic tube 16, the cylinder 14 and the piston rod 15. It can be seen in this case that sliding blocks 28 are formed on the cylinder 14 (or are arranged thereon otherwise than as illustrated), the blocks 28 engaging into the grooves 20 in the telescopic tube 16. That can provide for linear guidance of the telescopic unit 3 relative to the support unit 2 and rotation of the telescopic unit 3 relative to the support unit 2 can be prevented. As the cylinder 14 of the support unit 2 of the seatpost 1 is connected to the frame 18 by way of the fixing device 13 (see in that respect also FIG. 1b) rotation of the telescopic unit 3 and thus a saddle mounted by the seatpost 1 relative to the frame 18 can be prevented.
[0064] FIG. 1f shows a detail view of FIG. 1b. In this case the radial projections 21 of the adjustment part 7 in the form of the toothed rack 12 as well as the profiled notchings in the form of radial grooves 22 in the coupling part 8 can be seen.
[0065] In FIGS. 2a through 2e the seatpost 1 shown in FIGS. 1a through 1f is in an uncoupled state (see in that respect specifically FIG. 2d) with a longitudinal extent of the seatpost, that is reduced in relation to FIG. 1 (characterised by the reduced protrusions ×2 of the telescopic unit 3 out of the frame 18). In comparison with FIG. 1 the telescopic unit 3 has been uncoupled from the support unit 2 by rotation of the lever 10 (see in that respect also FIG. 2c). To reduce the longitudinal extent—without a relative movement of the piston of the piston rod 15 with respect to the cylinder 14 of the support unit 2, that is to say without a telescopic movement as described hereinbefore of the telescopic unit 3—the telescopic unit 3 was displaced relative to the support unit 2. That can also be seen by virtue of the fact that the adjustment part 7 in the form of the toothed rack 12 projects further into the piston rod 15 in comparison with FIG. 2b (section along line K-K in FIG. 2d) relative to FIG. 1.
[0066] FIG. 2c shows a section along line H-H shown in FIG. 2a. In comparison with Figure is it can be seen that the lever 10 and thus the head 23 of the toothed rack 12 have been rotated.
[0067] FIG. 2d shows a section along line J-J shown in FIG. 2a. It can be seen here that due to rotation of the toothed rack 12 the radial projections 21 of the adjustment part 7 in the form of the toothed rack 12 and the profiled notchings in the form of radial grooves 22 in the coupling part 8 have been brought out of engagement whereby the telescopic unit 3 and the support unit 2 have been uncoupled from each other.
[0068] FIG. 2e shows a detail view of FIG. 2b. Rotation of the toothed rack 12 means that the peripherally limited radial projections 21 have been moved outside the sectional plane (line K-K in FIG. 2d) and are therefore not visible in FIG. 2e.
[0069] In FIGS. 3a through 3e the seatpost 1 shown in FIGS. 1 and 2 is in a coupled state (see in that respect specifically FIG. 3d) with a maximum longitudinal extent of the seatpost, that is reduced in relation to FIG. 1 and also FIG. 2 (characterised by the further reduced protrusion ×3 of the telescopic unit 3 out of the frame 18). In comparison with FIG. 2 the telescopic unit 3 has been coupled to the support unit 2 again by rotation of the lever 10 (see in that respect also FIG. 3c). To further reduce the longitudinal extent—again without a relative movement of the piston of the piston rod 15 with respect to the cylinder 14 of the support unit 2, that is to say without a telescopic movement as described above of the telescopic unit 3—the telescopic unit 3 was further displaced relative to the support unit 2 prior to coupling. That can also be achieved in that the adjustment part 7 in the form of the toothed rack 12 projects still a distance further into the piston rod 15 in comparison with FIG. 3b (section along line N-N in FIG. 3d) relative to FIG. 2.
[0070] The sectional views in FIGS. 3c (section along line H-H in FIG. 3a), 3d (section along line L-L in FIGS. 3a) and 3e (detail view of FIG. 3b) substantially correspond to the views in FIGS. 1c, 1d and 1b in which the seatpost 1 is also in a coupled state.
[0071] FIGS. 4a through 4 show side and sectional views of a second embodiment of the seatpost 1, wherein the seatpost 1 is in a coupled state with substantially maximum longitudinal extent ×4.
[0072] FIG. 4a shows a seatpost 1 in a second embodiment, arranged in the saddle tube of a frame 18. The telescopic unit 3 which partially projects out of the frame 18 with a saddle clamp 17 for mounting a bicycle saddle is visible from the exterior. The seatpost 1 is connected to the frame 18 by way of the fixing device 13. In the illustrated embodiment the saddle unit 3 has a radial opening 9, through which the coupling device 4 (see also FIG. 4b) can be actuated from outside the telescopic unit 3 by way of a lever 10 projecting out of the radial opening 9.
[0073] In this embodiment of the seatpost 1 the blocking device 5 is in the form of part of the support unit 2.
[0074] The sectional planes A-A, B-B and L-L shown in FIGS. 4a and 4b are shown in FIGS. 4e, 4f and 4g respectively.
[0075] FIG. 4b is a sectional view along a longitudinal axis of the seatpost 1 in FIG. 1a (line D-D in FIG. 4f). A support unit 2 in a configuration of a piston with piston rod 15, mounted in a cylinder 14, can be seen in the sectional view. In this embodiment the support unit has a support tube 29 for guiding the telescopic unit 3 (see in that respect also FIG. 4g). A comparison with the first embodiment of the seatpost 1, shown in FIGS. 1 through 3, shows that the arrangement of the support unit 2 is substantially inverted in the second embodiment. The support unit 2 can however be arranged independently of the configuration of the coupling device 4.
[0076] Arranged between the telescopic unit 3 and the support unit 2 is a coupling device 4 (for further details see FIGS. 4d and 4f), by means of which the telescopic unit 3 is coupled to the support unit 2. In the illustrated embodiment the coupling device 4 has an adjustment mechanism 6 with an adjustment part 7 associated with the telescopic unit 3 and in the form of a sleeve 11, and a coupling part 8 associated with the support unit 2. The adjustment part 7 in the form of the sleeve 11 is mounted coaxially and rotatably in an inner region of the telescopic unit 3 which is tubular in the form of the telescopic tube 16. In this embodiment mounting of the adjustment part 7 in the head 31 of the telescopic unit 3 is implemented by way of the head 24 of the sleeve 11 and is advantageously suited to the transmission of axially acting forces.
[0077] The seatpost 1 is in a coupled state (see in that respect FIG. 4f) with the substantially maximum longitudinal extent of the seatpost 1 (characterised by the protrusion ×4 of the telescopic unit 3 out of the frame 18).
[0078] A comparison with FIG. 4a shows that in this embodiment the adjustment part 7 in the form of the sleeve 11 of the adjustment mechanism 6 is rotatable relative to the telescopic unit 3 through the radial opening 9 in the latter. The coupling part 8 in this case is advantageously mounted non-rotatably to the support unit 2 and is also secured against rotation with respect to the telescopic unit 3.
[0079] FIGS. 4c and 4d show detail views of the upper and lower ends of the seatpost 1 shown in FIG. 4b. FIG. 4c shows the opening 9 provided radially in the head 31 of the telescopic unit 3 and the lever 10 connected to the head 24 of the sleeve 11. At the inside the tubular sleeve 11 has profiled notchings in the form of radial grooves 25, by means of which a positively locking connection can be made between the telescopic unit 3 and the support unit 2, together with radial projections 26 which are shown in FIG. 4d and provided on the coupling part 8. In this embodiment the coupling device 4 is formed by the radial grooves 25 in the adjustment part 7 in the form of the sleeve 11 and the corresponding radial projections 26 in the coupling part 8.
[0080] The telescopic unit 3 can be coupled to the support unit 2 at a plurality of different coupling positions by the plurality of radial grooves 25 and the corresponding radial projections 26.
[0081] FIG. 4e shows a sectional view along line A-A shown in FIG. 4a. In this case the section is from the exterior inwardly through the saddle clamp 17 and the head 24 of the sleeve 11. The Figure shows the opening 9 provided radially in the head of the telescopic unit 3 and the lever 10 connected to the head 24 of the sleeve 11.
[0082] FIG. 4f shows a sectional view along line B-B in FIG. 4. The sectional plane is just above the coupling part 8. The section here is from the exterior inwardly through the telescopic tube 16, the sleeve 11 and the coupling part 8. It can be seen here that the profiled notchings in the adjustment part 7 in the form of the sleeve 11 are in the form of peripherally limited radial grooves 25 (see also FIG. 4d). The radial grooves 25 are in positively locking engagement with peripherally limited radial projections 26 correspondingly provided in the coupling part 8 for positively lockingly connecting the telescopic unit 3 to the support unit 2.
[0083] The positively locking connection of the telescopic unit 3 to the support unit 2 by way of the radial grooves 25 and the corresponding radial projections 26 provides that in a coupled state an axial force can be transmitted between the telescopic unit 3 and the support unit 2.
[0084] FIG. 4g shows a sectional view along line L-L in FIG. 4b. The section here is from the exterior inwardly through the frame 11, the telescopic tube 16, the support tube 29, the cylinder 14 and the piston rod 15. It can be seen that sliding blocks 27 are arranged on the telescopic tube 16 (for example screwed, or formed thereon otherwise than as illustrated), that engage into the grooves 30 in the support tube 29. That can provide for linear guidance of the telescopic unit 3 relative to the support unit 2 and prevent rotation of the telescopic unit 3 relative to the support unit 2. Guidance of the cylinder 14 relative to the support tube 29 can be effected in a similar fashion (groove and sliding block in the groove). As the support tube 29 of the support unit 2 of the seatpost 1 is connected to the frame 18 by way of the fixing device 13 (see in that respect also FIG. 4b) rotation of the telescopic unit 3 and therewith a saddle mounted by the seatpost 1 relative to the frame 18 can be prevented.
[0085] The groove 30 of the support tube 29 can be releasably closed at the upper end of the support tube 29, whereby unintentional complete removal of the telescopic unit 3 out of the seatpost 1 can be prevented.
[0086] In FIGS. 5a through 5f the seatpost 1 shown in FIGS. 4a through 4f is in an uncoupled state (see in that respect specifically FIGS. 5d and 5f) with the longitudinal extent of the seatpost 1 being reduced in relation to FIG. 4 (characterised by the reduced protrusion ×5 of the telescopic unit 3 out of the frame 18). In comparison with FIG. 4 the telescopic unit 3 has been uncoupled from the support unit 2 by rotation of the lever 10 (see in that respect also FIG. 5e). To reduce the longitudinal extent—without a relative movement of the piston of the piston rod 15 with respect to the cylinder 14 of the support unit 2, that is to say without an above-described telescopic movement of the telescopic unit 3—the telescopic unit 3 was displaced relative to the support unit. That can also be seen from the fact that the lower end of the adjustment part 7 in the form of the sleeve projects further beyond the coupling part 8 in comparison with FIG. 5b (section along line G-G in FIG. 5f) relative to FIG. 4.
[0087] FIGS. 5c and 5d show detail views of the upper and lower ends of the seatpost 1 shown in FIG. 5b. The peripherally limited radial grooves 25 have been moved outside the sectional plane (line G-G in FIG. 5f) and are therefore not visible in FIGS. 5c and 5d by the rotation of the sleeve 11 by way of the lever 10 (see FIG. 4c) for uncoupling the telescopic unit 3 and the support unit 2.
[0088] FIG. 5e shows a section along line H-H shown in FIG. 5a. It can be seen in comparison with FIG. 4e that the lever 10 and therewith the head 24 of the sleeve 11 have been rotated.
[0089] FIG. 5f, similarly to FIG. 4f, shows a sectional view along line F-F in FIG. 5a. The sectional plane is again just above the coupling part 8. The peripherally limited radial grooves 25 of the sleeve 11 have been brought out of engagement with the peripherally limited radial projections 26 in the coupling part 8 by a rotary movement.
[0090] Displacement of the telescopic unit 3 relative to the support unit 2 can be made possible by a now uncoupled connection of the telescopic unit 3 to the support unit 2.
[0091] In FIGS. 6a through 6e the seatpost 1 shown in FIGS. 4 and 5 is in a coupled state (see in that respect specifically FIGS. 6c and 6e) with a maximum longitudinal extent of the seatpost 1, that is reduced in relation to FIG. 4 and also FIG. 5 (characterised in FIG. 6a by the further reduced protrusion ×6 of the telescopic unit 3 out of the frame 18). In comparison with FIG. 5 the telescopic unit 3 has again been coupled to the support unit 2 by rotation of the lever 10 (see in that respect also FIG. 6d). To further reduce the longitudinal extent—again without a relative movement of the piston of the piston rod 15 relative to the cylinder 14 of the support unit 2, that is to say without an above-described telescopic movement of the telescopic unit 3—the telescopic unit 3 was further displaced relative to the support unit 2 prior to coupling. That can also be seen from the fact that the lower end of the adjustment part 7 in the form of the sleeve 11 projects still further beyond the coupling part 8 in comparison with FIG. 6b (section along line K-K in FIG. 6e) relative to FIG. 5.
[0092] The sectional views in FIGS. 6c (detail view of FIG. 6b), 6d (section along line H-H in FIGS. 6a) and 6e (section along line J-J in FIG. 6e) substantially correspond to those in FIGS. 4c, 4d, 4e and 4f in which the seatpost 1 is also in a coupled state.
[0093] Otherwise than as illustrated the adjustment mechanism 6 for the first embodiment of the seatpost 1 can be provided with a spindle with a continuous male thread instead of the toothed rack 12 and a corresponding continuous female thread in the coupling part 8 instead of the radial grooves 22. Similarly, for the second embodiment of the seatpost 1, the sleeve 11 can be provided with a continuous female thread and the coupling part 8 can be provided with a continuous male thread instead of the radial grooves 25 and the radial projections 26. In such a case for example actuation of the adjustment mechanism 6 can be respectively effected by way of an adjusting wheel.
[0094] The possibility that an adjusting wheel is provided instead of the lever 10 is also not to be excluded.
[0095] The fact that the lever 10 (or an adjusting wheel) is actuable through an axial opening in the telescopic unit 3 otherwise than as illustrated is also not to be excluded.
[0096] FIGS. 7a and 7b, to better illustrate the situation, show a comparison of the seatpost 1 in the second configuration in a coupled state (FIG. 7a) and in an uncoupled state (FIG. 7b). It can be seen in a comparison of FIG. 7a with FIG. 7b that a positively locking connection of the radial grooves 25 to the radial projections 26 can be released (transition FIGS. 7a to 7b) or made (transition FIGS. 7b to 7a) by rotation of the sleeve 11 in the counter-clockwise direction.
LIST OF REFERENCES
[0097] 1 seatpost [0098] 2 support unit [0099] 3 telescopic unit [0100] 4 coupling device [0101] 5 blocking device [0102] 6 adjustment mechanism [0103] 7 adjustment part [0104] 8 coupling part [0105] 9 opening [0106] 10 lever [0107] 11 sleeve [0108] 12 toothed rack [0109] 13 fixing device [0110] 14 cylinder [0111] 15 piston rod [0112] 16 telescopic tube [0113] 17 saddle clamp [0114] 18 frame [0115] 19 sliding block coupling part [0116] 20 groove telescopic tube [0117] 21 radial projection toothed rack [0118] 22 radial groove coupling part [0119] 23 head toothed rack [0120] 24 head sleeve [0121] 25 radial groove sleeve [0122] 26 radial projection coupling part [0123] 27 sliding block telescopic tube [0124] 28 sliding block cylinder [0125] 29 support tube [0126] 30 groove support tube [0127] 31 head telescopic unit
