FR2710308A1 - Rear shock-limiter and damper for bike - Google Patents

Abstract

The invention relates to a device to be interposed between the saddle post and the saddle of the bike. It consists of a block (1) with grooves (2) and threaded hole (3) at the centre and fastened by a hexagon socket head fastening screw (16) to an upper plate including a block (1) with grooves (2), non-threaded hole (5) two tabs (6) for fastening the upper plate into the four tabs of the lower plate (8) and obtaining a clamp to hold the damper (14) itself fastened by a hexagon socket head fastening screw (16). Two rails (13) forming part of the lower plate make it possible to fasten the whole device onto the saddle post (15) and two holes (10) and (11), one for fastening the damper, the other giving access to the hexagon socket head fastening screw (16) for the saddle runner thus formed. The device according to the invention is particularly intended to absorb shocks received through the cyclist's whole body when cycling along uneven land, track or road. It gives better stability and additional adjustment of the saddle position.

Description

REAR SHOCK ABSORBER AND LIMITER FOR BICYCLES
The present invention relates to an intermediate device between the saddle stem and the saddle of the bicycle which has the function of absorbing the shocks received by the cyclist when it is traveling on road, path or uneven terrain.

Most bikes do not have a rear seat shock absorber system.

Nevertheless, some bicycle saddles are provided with lateroposterior springs which are intended to be shock absorbers and of non-adjustable hardness. Not only is the saddle too wide, but it also causes abnormal rolling and laterality movements which become unpleasant with prolonged use.

The device according to the invention overcomes these drawbacks. It indeed has, according to a first characteristic, a sort of clamp articulated at its front part and formed of three metal parts and which enclose at its rear part a shock absorber of sylastic, rubber or other elastomers shock absorber and shock limiter which can be of density and of varying hardness.

The installation of this intermediate device does not require changing the saddle or the saddle stem. It makes it possible to absorb shocks and has an interchangeable shock absorber and to have two additional adjustments: - one between the saddle support rail and the device for advancing or reversing the entire saddle, - the other between the device and the carriage of the saddle stem also making it possible to advance or reverse the saddle assembly on the one hand, and to lower or raise the "saddle spout" on the other hand.

By its position and its mounting, this device works with each pedal stroke and therefore the body of the cyclist is not in lateral imbalance which allows him to be in total progress and to remain stable on his bike.

The intermediate device has the advantage of being easily placed and removed.

The shock absorber can be installed and removed without any other manipulation than removing the hexagonal socket fixing screw.

The accompanying drawings illustrate the invention:
Figure 1 shows the entire device
Figure 2 shows the shock absorber
With reference to these drawings, the device comprises a part in the form of a block (1) with a groove (2) at each end across its width and a threaded hole (3) at its center allowing the saddle to be fixed.

The plate (4) having on its upper part a paver with inverted grooves (2), in its center a hole (5) not threaded, at the front two fixing lugs (6) drilled in their width, at the end behind a threaded hole (7) allowing the shock absorber (14) to be fixed, this part forms the upper part of the piece.

The lower plate of the clamp (8) has 4 fixing lugs (9) in its front part which encloses the two tabs (6) of the upper plate to form the articulation of the clamp, in its center a non-threaded hole (10 ) in relation to the hole (5) of the upper plate and at its rear end a non-threaded hole (11) in relation to the hole (7) of the upper plate, two notches (12) lateral to lighten the plate.

Two support rails (13) fixed to the lower part of the plate make it possible to fix the whole of the device on the seat post (15). The shock absorber (14) in sylastic or rubber is of conical shape truncated at its upper part, drilled over its entire height in its center to allow the passage of the fixing screw.

Claims (5)

1) Device for absorbing and limiting rear impacts propagating through the bicycle saddle, characterized in that it comprises an upper block (1) with a threaded hole (3) allowing the saddle to be fixed with the hole (5) of the paver of the upper plate (4) under which the lower plate (8) is fixed, thus forming a clamp which keeps the damper fixed (14), 2) Device according to claim 1 characterized in that the upper block (1) has two grooves (2) and a threaded hole (3) in the center and the block of the upper plate (4) has two grooves (2) and a hole not threaded (5) in the center. The holes (3) and (5) used to keep the two grooves tight and the saddle locked with a hexagonal socket head screw (16) 3) Device according to claim 1 and claim 2 characterized in that the plate (4) has two legs (6) which are inserted in the 4 legs (9) of the lower plate (8) to fix it and thus obtain pliers. 4) Device according to claim 3 characterized in that the damper (14) of conical shape is drilled in its center to be held by a hexagonal socket head screw (16) in the clamp.  5) Device according to any one of claims characterized in that the lower plate (8) comprises two rails (13) for fixing the entire device on the seat post (15) and two holes (10) and (11 ), One in the center providing access to the hexagonal socket head fixing screw (16) and the other used to fix the shock absorber.