Seat post

A frame for a bicycle or a moped, comprising a seat tube that is connected to the frame by means of a material fit, said seat tube comprising an upper portion and a lower portion opposite the upper portion,

• wherein at the upper portion, the seat tube is connected via a hinge to a closure element that is configured to be connected to a seat clamping device and/or to a seat, wherein said closure element is further configured to be brought into an open position in which a region inside the seat tube is substantially accessible by an operator, and wherein said closure element is further configured to be brought into a closed position in which the region inside the seat tube is substantially not accessible by an operator, and
• wherein the seat tube comprises an intermediate piece that is connected to the seat tube by means of a clamping and/or screw connection, wherein the intermediate piece comprises the hinge that is connected to the closure element, and wherein the intermediate piece is configured such that a position of the seat clamping device or the seat can be changed relative to the axial direction of the seat tube.

A folding lock for protection against theft of a bicycle or moped, comprising a lock body and n link segments of a substantially flat design, wherein n is an integer greater than or equal to 3, wherein each link segment has a thickness d, wherein the direction of thickness is defined as the direction of least extension of each link segment, wherein a first, end link segment is connected to the lock body, wherein a second link segment is pivotably connected to the first link segment via a first hinge pin, wherein a third link segment is pivotably connected to the second link segment via a second hinge pin, and wherein a final, end link segment comprises a locking element that is configured to be locked together with a correspondingly configured counterpart in the lock body,

• wherein the extension of the entire folding lock in the direction of thickness is no more than (n/2+1)*d*1.1, and
• wherein at least two link segments each comprise a catch element configured as a magnet element, wherein the catch elements are arranged and are such that the at least two link segments can adopt an orientation in which the at least two link segments are oriented substantially parallel relative to the longitudinal direction thereof.

A seat post for a bicycle or a moped, comprising a seat post tube, wherein said seat post tube comprises an opening member that is configured to allow a closure element of the seat post to perform a movement, by means of which a region inside the seat post tube can be accessed in order to insert or remove an elongated object, wherein said seat post tube comprises an upper portion and a lower portion opposite the upper portion, said upper portion being configured to be connected to a seat clamping device and/or to a seat, wherein the closure element is provided in the region of the upper portion,

• wherein the outer circumferential length of the seat post tube in the region of the lower portion is smaller than or the same as the outer circumferential length of the seat post tube in the region of the upper portion, and
• wherein the lower portion of the seat post tube comprises a first axis relative to which it is rotationally symmetrical, wherein the upper portion of the seat post tube comprises a second axis relative to which it is rotationally symmetrical, wherein the first axis substantially extends shifted parallel to the second axis, and wherein the distance between the first axis and the second axis is between 0.5 mm and 2.5 mm.

A seat post for a bicycle or a moped, comprising a seat post tube, wherein said seat post tube comprises an opening member that is configured to allow a closure element of the seat post to perform a movement, by means of which a region inside the seat post tube can be accessed in order to insert or remove an elongated object, wherein said seat post tube comprises an upper portion and a lower portion opposite the upper portion, said upper portion being configured to be connected to a seat clamping device and/or to a seat, wherein the closure element is provided in the region of the upper portion,

• wherein the outer circumferential length of the seat post tube in the region of the lower portion is smaller than or the same as the outer circumferential length of the seat post tube in the region of the upper portion, and
• wherein the seat post tube comprises a clamping element in the region of the lower portion, which is connected to the seat post tube by a fastening element, said clamping element being configured such that actuation of the fastening element results in displacement of the clamping element, the direction of displacement being at least partially radial to the axis of the seat post tube.