DE8129911U1 - SEAT POST FOR BICYCLES. - Google Patents

Description

HD / LLMA: TU33I S.?.A., Via Callalta N.3, Loria (Treviso), Italy

Seat post for! Bicycles.

DESCRIPTION

As is known, seat support tubes are attached to "special sports bikes" and ² S-men, which are correctly referred to as "racing bikes", and can be adjusted accordingly between the different types available on the market. Indeed, these bicycles have the saddle support of the frame into which the seat post is inserted, drilled with different diameters depending on the type of material used. The inferior the metal of the carrier, the thicker the thickness of the carrier itself and therefore correspondingly smaller the diameter of the inner bore of the same. Conversely, with bicycles of better quality (including the special "racing bikes") you will find carriers of Hohsr QaLitat, very light, robust and thin-walled, in which the inner bore is larger, up to a maximum diameter of 27.2 mm.

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In this case, the corresponding support tube must also be used have a diameter of this dimension. In fact, the range of choice in the dimensions of the diameters of the seat post tubes is large and encompassing, with gaps of 0.2 mm each, a minimum diameter of 25.8 mm and a maximum diameter, which for the special "racing bikes" is 27.2 mm.

Hence the disadvantage that should not be underestimated, the is due to the need to manufacture seat post tubes of many different diameters in order to equip these special bicycles, as well as on the part of the Manufacturers the consequent need to always have a reasonable number of pipes with different diameters to have to keep available. This of course brings a costly (from an economic point of view) and for the manufacturer space-consuming storage with it.

A second aspect in the special manufacture of "racing bikes", albeit less important, is the constant search for aerodynamic optimal profiles for each Component of the bike itself given. From this point of view, the disadvantage that has been found to date is due to the fact that, as already said, the disadvantage for this "Racing bikes" used seat post tubes with larger ones Diameter and therefore less aerodynamic. The purpose of the present invention is therefore to achieve the above Avoiding detriments and making a seat post,

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which can be attached to the various types of saddle carriers without, however, being costly for the manufacturer and to mean space-consuming storage and to improve the aerodynamic properties of the special "racing bikes".

This and other purposes are all achieved by the relevant seat post for bicycles, characterized in that it is manufactured in a single standard diameter, a cylindrical bushing being provided for connecting said tube to the corresponding saddle support of the frame of said bicycles, said cylindrical bushing having an internal diameter corresponding to that of mentioned standard diameter corresponds, and an outer diameter with variable dimensions in relation to the dimensions of the carrier mentioned.

Other features and advantages of the present invention emerge more clearly from the following description of a preferred form of implementation, as an example and not limited in the accompanying drawings, of which:

Figure 1 shows a side view of the seat post tube;

- Figs. 2, 3 and 4 respectively show a side view, a

Plan view and a section (according to line IV-IV from Fig. 2) the cylindrical bushing;

- Figs. 5, 6 and 7 respectively show a side view, a

Front view and a section (along the line VII-VII

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from Fig. 5) of the tube pushed into the cylindrical socket.

With reference to the figures Is1 with 1 a metallic Seat post designates, which is cylindrical and has a diameter of 22 mm, and that at its upper end with a fastening device 2 -which is known per se- for has the saddle of a bicycle. With i is a cylindrical and preferably made of nylon socket designated with

a stop ring 4 and a straight slot 5, the ent

runs long of the cylindrical surface is provided. The-

• ^: se cylindrical bush 3 has an inner diameter which

corresponds to the diameter of the tube 1, as well as an outer diameter of variable dimensions between 25.8 mm and 27.2 mm at intervals of 0.2 mm. This in order to to be able to push them into the corresponding hole in the saddle carrier on the bicycle frame, which has a diameter of has different dimensions, between 25.8 mm and 27.2 mm, depending on the material used.

Of course, in its practical production, the invention can also have other forms than those shown above; in particular, modifications of a practical nature can be made, but without departing from the scope of the present invention

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Claims (3)

ITALMAOTJBEI S.ρ.Α., Via Callalta N.3, Loria (Treviso), Italy Saddle protection for bicycles. Protection claims 1. Sat + elstützrohr for bicycles, characterized in that that ei, is produced in a single standard diameter, where a cylindrical socket is provided for connection of said tube is used with the corresponding saddle support of the frame of said bicycles, and where dfo said cylindrical bushing has an inside diameter which is equal to the specified standard diameter and an outside diameter with variable masses in relation to the corresponding dimensions of the named saddle beam. 2. Seat post according to claim 1, characterized in that said cylindrical bushing is made of nylon Is and has a straight slot which runs in the longitudinal direction is arranged along the cylindrical surface. 3. Seat post according to claim 1, characterized in that said standard diameter is 22 mm and that said outside diameter of said cylindrical bushing changeable, i.e. from 25.8 mm bL to 27.2 mm with gaps corresponding to 0.2 mm.