FR2483348A1 - SEAT POST FOR BICYCLES AND SIMILAR VEHICLES - Google Patents

Abstract

THE SUBJECT OF THE INVENTION RELATES TO THE TECHNICAL SECTOR OF ACCESSORIES FOR CYCLES AND SIMILAR VEHICLES. THE SEATPOST IS REMARKABLE IN THAT THE CURVED OR OFFSET UPPER END 1A OF THE SADDLE TUBE 1 SHOWS DIRECTLY OR INTERRUPTED, A BALL HEAD 1B ON WHICH CAN OSCILLATE LONGITUDINAL ONLY, THAT IS TO SAY IN THE PLAN OF THE CYCLE FRAMEWORK, A SADDLE CARRIER INCLUDING FOR THIS EFFECT A LOWER PART 3 IN THE SHAPE OF A SPHERICAL CAP 3B INTENDED TO TAKE A LARGE PRESS ON THE SPHERICAL HEAD1B. THE INVENTION APPLIES TO ALL TYPES OF BICYCLES.

Description

The invention relates to a seat post for bicycles and

similar vehicles.

  The subject of the invention is related to the technical sector

  bicycle accessories and similar vehicles.

  According to the invention, it has been desired to produce a new seat post of the type comprising a tube engaged and fixed in the tpbe.

  corresponding part of the frame, a head directly attached to it or

  the upper end of the tube, and a carriage consisting of two clamps son of the saddle mount and connected to the head by a single screw assembly of the elements

  and locking in position after longitudinal and angular adjustment

  saddle in relation to the seat post.

  The seat post according to the invention is of economical manufacture.

  nomic of the fact that the elements which compose it are obtained - with a minimum of resumption of machining And have relatively simple forms -. conferring on the seatpost

  strong solidity, security and fiaility.

  According to a first feature, the seat post according to the invention is remarkable in that the upper end of the seat post tube has a spherical head directly or in an attached manner axially through a passage opening for an assembly screw of the head. with a cart equipped for

  attach the saddle mount wires and whose underside pre-

  feels a spherical cap of support and contact on the head.

spherical.

  Another feature is that the ori-

  this passage of the assembly screw passes vertically through the spherical head and has a diabolo shape d section substantially

  circle in the center of the sphere with a slightly

  than that of the screw, and ovoid and flared sections in

  direction of the periphery of the sphere and in the longitudinal direction

  dinal, in order to allow angular movements of the screw of

  assembly only in this longitudinal direction.

  These and other characteristics will emerge from the

description which follows.

  To fix the object of the invention without however limiting it, in the accompanying drawings: FIG. 1 is a view in perspective illustrating separately

  the components of the seat post according to the invention.

  FIG. 2 is a plan view on a larger scale of the 2-

  spherical head of the seatpost.

  FIG. 3 is a cross-sectional view of the rod of

saddle mounted.

  FIG. 4 is a longitudinal sectional view considered in

  4-4 of Fig. 3. Figs. 5 and 6 are respectively bottom views and

  in plan of the carriage element having a spherical cap.

  Figures 7 and 8 are respectively bottom and bottom views of the other carriage member. FIG. 9 is a cross-sectional view illustrating an alternative embodiment of the transverse angular abutment of the trolley.

on the head.

  FIG. 10 is a bottom view of the carriage element

  spherical cap according to Figure 9.

  In order to make the object of the invention more concrete, it is

  now written in non-limiting forms of achievements

  illustrated in the figures of the drawings.

  The seat post illustrated by way of example

  tally a seatpost tube 1 whose upper end

  curved presents it directly from manufacture or in a

  span # a spherical head lb, a saddle carriage composed in this example of two upper flanges 2 and lower 39 the carriage head assembly being assembled by a screw 4 freely passing through the head and the lower flange, and screwing in 2a in the flange

superior 2.

  The spherical head 1b is axially and vertically pierced with an orifice 1, which has a diabolo shape of substantially circular section in the center of the sphere, with a diameter slightly

  greater than that of the screw 4, and sections ovoldes and flared.

  towards the periphery of the sphere and in the

  tudinal, so that said screw 4 can move angularly

  in this direction, in view of the angular adjustment of the saddle.

  To avoid transverse displacement of the carriage with respect to the spherical head 1b, and a rotational movement thereof around the screw 4, complementary transverse stop means are provided on both the spherical head 1b and on the bottom flange 3 of the carriage, as will be apparent from the following

of the description.

  The lower flange 3 has on its underside 3a a spherical cap 3b for capping the spherical head Ib - 3 -

  with in the center, a hole 3c of passage with play of the screw 4 (fi

  Figure 5). The central part 3d in which is realized the

  spherical lottery 3b, has a generally tunnel shape constituting front and rear clearances necessary for the passage of the curved end 1a of the seat tube in the maximum angular position at the front (in the direction of the arrow fi, 4) Laterally, on either side of the central portion 3d, the lower flange 3 has, in a known manner, cradles 3e

  intended to accommodate the F-yarns of the seat mount (not shown

sented).

  The upper flange 2 has a central lower face 2b

  concave to marry without contact and at least in part, the

  The outer flange has on the outside, on both sides of the face 2b, the upper flange having plane or curved faces 2c, of support and of contact on the wires F of the flange.

saddle mount.

  As can be seen in Figures 3 and 4 of the drawings,

  that we want to adjust longitudinally the position of the seat relative to the seat tube, it is sufficient to release the upper flange 2 by action on the screw 4 which has for this purpose a control head 4a polygonal or cylindrical hexagon socket, this makes it possible to slide the mounting wires F on the cradles 3eo By the same action on the screw 4, the angular position can be adjusted in the same longitudinal direction of the carriage relative to the spherical head 1b, thanks to the angular displacement of the opinion

  4 in the hole lc (according to arrow fl or f2, Figure 4).

  Note that is preferably interposed between the screw head 4a and the spherical head 1b, a washer 5 bearing surface 5a in spherical cap on the side of the sphere, possibly arec

  apperities (tries, flutes.e.) reinforcing the action of ser-

  rage. As we saw above, to avoid transverse inclinations. of the carriage relative to the spherical head, as well as the rotational movements thereof around the screw 4,

  provides additional means of abutment.

  A first embodiment of these means has been illustrated in FIGS. 1, 3 and 5 of the drawings, in which it can be seen that the spherical head 1b has two diametrically opposite points on its axis.

  opposite in the transverse direction, lugs 6 or similar projections

  , whether on the sphere or coming directly from manufacturing * it is the same as its name in Tuauoo, does not exist in the past. uae; uTq * uoT4dTzsap el ap uaTq juajossaeJ sabuice saq * ueuaeuuoTOuo; ap xnae sap aeduioD; ueuae ua s9nofno; enbT-iqds elaolIo el 3p ea = ne, p 4a 4aed ap apTiq el ans s; nogxa ú sabessoq sap 4a p 's9soddo satjtiejed sleld o -aW sap xed san; suoo 4uos aenq ap saTeluewpldwoD suahow sel O a 6 sajn6T xns aa; In this context, we have a number of countries in the world, such as the United States, the United States, the United States, the United States, the United States, the United States, the United States, the United States, the United States, the United States, and the United States. a4ole elI anb inod aDnDIeD UewasneaDTpn Isa anapuoioJd uI; uop; a 9.soB5ae se.ata4; ueTp -TUap a suTom uts; fnoza: W xnoj ua saquTeadwe sap sanraged uos ú apTq el ap 1 a'nagTxuT azev e. years old anb spueq - 1X7 248334.g

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Claims (7)

  -1- Seatpost for bicycles and the like, from   type comprising a seat tube whose head formed at the end   mite receives a trolley equipped to grip the wires   Constituting the saddle mount, the head-carriage assembly being   a single screw passing through the head and the carriage, characterized in that the curved upper end (eya) of the seat tube (1) has a head directly or in a connected manner,   sphere (1b) on which can oscillate in the longitudinal direction   nal only that is to say in the plane of the cycle frame, a saddle carriage comprising for this purpose a lower portion (3) shaped spherical cap (3b) for taking a wide support on the spherical head (lb).   = 2- seat post according to claim 19 characterized in that   that the spherical head (Ib) presents axially and sensitively   vertically when the seat tube is engaged in the corresponding frame tube, an orifice-(lc) passage of'vis   (4) assembly of the carriage and spherical head; the said   it has a diabolo shape with a substantially circular section at the center of the spheres with a diameter slightly greater than that of the screw, and ovoid and flared sections towards the periphery of the sphere and in the longitudinal direction, in order to allow the angular displacements of the assembly screw   only in this longitudinal direction.   -3- Seat post according to claims 1 and 2 together,   characterized in that the chatotporte-saddle consists of a lower flange (3) whose central tunnel-shaped portion (3d) is axially pierced (3c) for the passage of the screw and contains on its underside the cap spherical (3b) bearing and contact on the sphere (lb), and whose lateral sides in tunnel elongation form cradles (3e) receiving the   son (F) of the saddle mount; an upper flange (2) in-   which is screwed axially in (2a) t the screw (4), and whose lateral sides have flat or curved portions (2c) bearing on the son (F), while the lower central portion (2b) is concave to fit the tuhnel shape of the lower flange (3).   -4- Seat post according to claims 1, 2 and 3 together,   characterized in that to prevent the tilting of the carriage.   saddle with respect to the spherical head that (lb), in the transverse direction   sal of the bicycle, complementary abutment means are provided at two opposite points of the large diameter of the sphere (lb) and under the lower flange (3) on either side of the cap spherical (3b).   -5- Seat post according to claim 49 characterized in that the complementary transverse stop means of the carriage consist on the one hand lugs (6) or similar members projecting and formed directly or reported on the large diameter of the sphere and, on the other hand, of impressions in those (3f) formed under the lower flange (3) and covering the lugs at least along their radius; the bottom of the cavities and the lugs being separated by a functional clearance when the spherical cap   (3b) is in contact with the sphere (lb).   -6- Seat post according to claim 4, characterized in that the complementary means of transverse stop of the carriage consist on the one hand of opposite parallel flats (ld) of the sphere (lb) and, on the other hand, of bosses (3g) made under the lower flange (3) at the edge of the spherical cap (3b), with a functional clearance between the bosses and the flats when   the spherical cap is in contact with the sphere.   -7- Seat post according to claim 1, characterized in that between the head (4a) of the screw (4) and the sphere is interposed a washer (5) bearing surface (5a) on the sphere ,   in spherical cap # with reinforcing asperities of the ser- rage.