FR2550153A1 - Device for clamping the saddle tube of a cycle frame around the saddle post - Google Patents

Device for clamping the saddle tube of a cycle frame around the saddle post Download PDF

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Publication number
FR2550153A1
FR2550153A1 FR8312974A FR8312974A FR2550153A1 FR 2550153 A1 FR2550153 A1 FR 2550153A1 FR 8312974 A FR8312974 A FR 8312974A FR 8312974 A FR8312974 A FR 8312974A FR 2550153 A1 FR2550153 A1 FR 2550153A1
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FR
France
Prior art keywords
seat
tube
saddle
seat tube
clamping
Prior art date
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Granted
Application number
FR8312974A
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French (fr)
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FR2550153B1 (en
Inventor
Jean-Jacques Rakover
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MBK Industrie SA
Original Assignee
Ateliers de la Motobecane SA
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Publication date
Application filed by Ateliers de la Motobecane SA filed Critical Ateliers de la Motobecane SA
Priority to FR8312974A priority Critical patent/FR2550153B1/en
Publication of FR2550153A1 publication Critical patent/FR2550153A1/en
Application granted granted Critical
Publication of FR2550153B1 publication Critical patent/FR2550153B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K19/00—Cycle frames
    • B62K19/30—Frame parts shaped to receive other cycle parts or accessories
    • B62K19/36—Frame parts shaped to receive other cycle parts or accessories for attaching saddle pillars, e.g. adjustable during ride

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Abstract

This clamping device is of the type comprising a barrel formed by two bosses which are situated on either side of a longitudinal slot 4 of the saddle tube 1 and interact with a screw or a bolt 6. The two bracing stays of the frame are fixed on the saddle tube 1 on either side of its longitudinal slot 4, and the two bosses of the barrel are fixed astride the bracing struts 2 and on the saddle tube 1 on either side of its slot 4.

Description

L'invention a pour objet un dispositif de serrage du tube de selle d'un cadre de cycle autour de la tige de selle. The invention relates to a device for clamping the seat tube of a cycle frame around the seat post.

Pour resserrer le tube de selle d'un cadre de cycle autour de la tige de selle et permettre cependant de régler la hauteur de la tige de selle et donc de la selle par rapport au cadre, il est habituel de prevoir sur le tube de selle, d'une part, une fente longitudinale située dans la zone arrière de sa partie supérieure et, d'autre part, de part et d'autre de cette fente, deux bossages qui servent d'appui à une vis ou à un boulon ayant pour rôle de resserrer la zone fendue du tube autour de la tige de selle. Ces deux bossages, qui sont généralement connus sous la désignation de "barillet", sont situés très au-dessus de la zone dans laquelle les deux haubans du cadre se raccordent au-tube de selle, et le raccordement entre ces haubans et ce tube se fait en dessous de la zone fendue du tube. To tighten the seat tube of a cycle frame around the seat post and yet allow to adjust the height of the seat post and therefore of the saddle relative to the frame, it is usual to provide on the seat tube , on the one hand, a longitudinal slot located in the rear zone of its upper part and, on the other hand, on either side of this slot, two bosses which serve to support a screw or a bolt having to tighten the split area of the tube around the seatpost. These two bosses, which are generally known by the designation "barrel", are situated very above the area in which the two seat stays are connected to the seat tube, and the connection between these seat stays and this tube is done below the split area of the tube.

Ce dispositif de serrage est simple et efficace, mais il ne permet pas de modifier facilement et rapidement la hauteur de la selle. Cela provient de ce que la rouille et la saleté constituent, à plus ou moins long terme, un moyen supplémentaire de liaison entre le tube et la tige de selle, moyen supplémentaire qui produit son effet malgré le desserrage de la vis ou du boulon du barillet. En d'autres termes, même en l'absence de serrage de cette vis ou de ce boulon, et malgre la présence de sa fente, le tube de selle demeure resserré autour de la tige de selle. This clamping device is simple and effective, but it does not allow the seat height to be changed quickly and easily. This stems from the fact that rust and dirt constitute, in the more or less long term, an additional means of connection between the tube and the seatpost, an additional means which produces its effect despite the loosening of the screw or bolt of the barrel . In other words, even in the absence of tightening of this screw or of this bolt, and despite the presence of its slot, the seat tube remains tightened around the seat post.

L'invention supprime cet inconvénient ; elle a pour objet un dispositif de serrage qui est du type ci-dessus, mais dans lequel les deux haubans du cadre sont fixés sur le tube de selle de part et d'autre de sa fente longitudinale, et les deux bossages du barillet sont fixés à cheval sur les haubans et sur le tube de selle, de part et d'autre de sa fente. The invention eliminates this drawback; it relates to a clamping device which is of the above type, but in which the two shrouds of the frame are fixed to the seat tube on either side of its longitudinal slot, and the two bosses of the barrel are fixed straddling the seat stays and the seat tube on either side of its slot.

Tout en étant très simple, ce dispositif procure deux avantages essentiels t un serrage efficace et un desserrage facile du tube de selle autour de la tige de selle. While being very simple, this device provides two essential advantages: effective clamping and easy loosening of the seat tube around the seat post.

Le serrage est efficace, car il s'exerce non seulement au niveau des deux bossages du barillet, mais aussi plus haut, less effets de serrage du barillet étant transmis par les têtes des haubans à la partie supérieure du tube de selle. The clamping is effective, because it is exerted not only at the level of the two bosses of the barrel, but also higher, the clamping effects of the barrel being transmitted by the heads of the shrouds to the upper part of the seat tube.

Le desserrage est facile, car dès l'instant où la vis ou le boulon du barillet est desserré, la partie supérieure des deux haubans qui avait été resserrée s'ouvre élastiquement on provoquant l'ouverture de la fente du tube de selle, cette élasticité provenant non seulement de la nature et de la forme des haubans, mais aussi de la présence de l'entretoise qui les relie. The loosening is easy, because from the moment the screw or the bolt of the barrel is loosened, the upper part of the two shrouds which had been tightened opens elastically causing the opening of the seat tube slot, this elasticity not only from the nature and shape of the shrouds, but also from the presence of the spacer that connects them.

L'invention sera bien comprise d'ailleurs à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemple non limitatif, une forme d'exécution de ce dispositif de serrage de ce tube de selle autour de la tige de selle
Figures i et 2 en sont des vues en perspective, respectivement de 3/4 avant et de 3/4 arrière, et
Figure 3 est, à plus grande échelle, une vue en coupe horizontale passant au niveau du barillet.The invention will be understood moreover with the aid of the description which follows, with reference to the appended schematic drawing representing, by way of nonlimiting example, an embodiment of this clamping device of this seat tube around the seatpost
Figures i and 2 are perspective views thereof, of 3/4 front and 3/4 rear respectively, and
Figure 3 is, on a larger scale, a horizontal sectional view passing through the barrel.

Dans ce dessin, (1) désigne le tube de selle d'un cadre de cycle, (2) les haubans qui font partie de ce cadre et délimitent la fourche arrière et (3) la tige qui est montée coulissante dans le tube de selle et qui porte à son sommet la selle, cette tige étant habituellement désignée sous l'appellation " tige de selle ". In this drawing, (1) designates the seat tube of a cycle frame, (2) the seat stays which form part of this frame and delimit the rear fork and (3) the rod which is slidably mounted in the seat tube and which carries the saddle at its top, this rod being usually designated by the name "seatpost".

Comme cela est connu en soi, le tube de selle présente, dans la zone arrière de sa partie supérieure, une fente longitudinale (4) qui s'étend sur une hauteur de l'ordre de trois à quatre centimètres ; et comme cela est également connu, deux bossages (5a, 5b) constituant le corps d'un barillet sont brasés sur le tube de selle (1) de part et d'autre de sa fente (4) pour permettre, par vissage d'une vis (6), de resserrer le tube de selle 41) autour de la tige de selle (3) et en conséquence d'immobiliser la selle à la hauteur désirée par le cycliste. As is known per se, the seat tube has, in the rear region of its upper part, a longitudinal slot (4) which extends over a height of the order of three to four centimeters; and as is also known, two bosses (5a, 5b) constituting the body of a barrel are brazed to the seat tube (1) on either side of its slot (4) to allow, by screwing a screw (6), to tighten the seat tube 41) around the seat post (3) and consequently to immobilize the saddle at the height desired by the cyclist.

Conformément à l'invention, les deux bossages (5a, 5b) de ce barillet sont fixés non seulement sur le tube de selle (1), mais aussi sur les haubans (2), et ces haubans sont fixés sur le tube de selle non pas dans une zone située en dessous de la fente (4), mais à proximité du sommet du tube de selle (1). According to the invention, the two bosses (5a, 5b) of this barrel are fixed not only on the seat tube (1), but also on the seat stays (2), and these seat stays are fixed on the seat tube not not in an area below the slot (4), but near the top of the seat tube (1).

On conçoit dès lors que, par vissage de la vis (6), il est possible d'obtenir un excellent effet de serrage du tube de selle (1) autour de la tige de selle (3) car les effets de serrage 'exercent non seulement au niveau des deux bossages (5a, 5b) mais aussi à proximité du sommet du tube de selle puisqu'ils sont reportés dans cette zone supérieure par les têtes des deux haubans (2),
Le serrage du barillet par la vis (6) conduit en conséquence à resserrer les deux branches des deux haubans (2) dans leur zone supérieure située au-dessus de l'entretoise (7). Cela a pour effet de faciliter le desserrage du tube de selle en vue du réglage de la hauteur de la selle.Le simple dévissage de la vis (6) libère en effet les haubans dont les têtes qui avaient été rapprochées, s'écartent élastiquement l'une de l'autre, ce qui a pour conséquence de contribuer A ouvrir le tube de selle (1).It is therefore understandable that, by screwing in the screw (6), it is possible to obtain an excellent tightening effect of the seat tube (1) around the seatpost (3) because the tightening effects do not exert only at the level of the two bosses (5a, 5b) but also near the top of the seat tube since they are carried in this upper zone by the heads of the two shrouds (2),
The tightening of the barrel by the screw (6) consequently leads to tightening the two branches of the two shrouds (2) in their upper zone situated above the spacer (7). This has the effect of facilitating the loosening of the seat tube in order to adjust the height of the saddle. The simple unscrewing of the screw (6) indeed releases the seat stays whose heads which had been brought together, elastically move apart. from one another, which has the consequence of helping to open the seat tube (1).

Comme il va de soi, l'invention ne se limite pas à la seule forme d'exécution de ce dispositif de serrage du tube de selle autour de la tige de selle ; elle en embrasse au contraire toutes les variantes de réalisation, quels que soient notamment les moyens utilisés pour le serrage du barillet, ces moyens pouvant, co e dans le cas représenté au dessin, consister en une vis dont la tige filetée traverse librement l'un des deux bossages du barillet et se visse dans un trou taraudé dans autre bossage, mais ces moyens pouvant aussi consister par exemple en un boulon.  It goes without saying that the invention is not limited to the sole embodiment of this device for clamping the seat tube around the seat post; on the contrary, it embraces all the variant embodiments thereof, whatever the means used for tightening the barrel, these means being able, co e in the case shown in the drawing, to consist of a screw whose threaded rod freely crosses one of the two bosses of the barrel and is screwed into a tapped hole in another boss, but these means can also consist, for example, of a bolt.

Claims (1)

REVENDICATION CLAIM Dispositif de serrage du tube de selle d'un cadre de cycle autour de la tige de selle, du type comportant un barillet formé par deux bossages (5a, 5b) qui sont situés de part et d'autre d'une fente longitudinale (4) du tube de selle (1) et coopèrent avec une vis ou un boulon (6), caractérisé en ce que les deux haubans (2) du cadre sont fixés sur le tube de selle (1) de part et d'autre de sa fente longitudinale (4), et les deux bossages (5a, 5b) du barillet sont fixés à cheval sur les haubans (2) et sur le tube de selle (1), de part et d'autre de sa fente (4).  Clamping device for the seat tube of a cycle frame around the seat post, of the type comprising a barrel formed by two bosses (5a, 5b) which are located on either side of a longitudinal slot (4 ) of the seat tube (1) and cooperate with a screw or a bolt (6), characterized in that the two seat stays (2) of the frame are fixed to the seat tube (1) on either side of its longitudinal slot (4), and the two bosses (5a, 5b) of the barrel are fixed astride the seat stays (2) and the seat tube (1), on either side of its slot (4).
FR8312974A 1983-08-05 1983-08-05 DEVICE FOR CLAMPING THE SEAT TUBE OF A CYCLE FRAME AROUND THE SEAT POST Expired FR2550153B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8312974A FR2550153B1 (en) 1983-08-05 1983-08-05 DEVICE FOR CLAMPING THE SEAT TUBE OF A CYCLE FRAME AROUND THE SEAT POST

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8312974A FR2550153B1 (en) 1983-08-05 1983-08-05 DEVICE FOR CLAMPING THE SEAT TUBE OF A CYCLE FRAME AROUND THE SEAT POST

Publications (2)

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FR2550153A1 true FR2550153A1 (en) 1985-02-08
FR2550153B1 FR2550153B1 (en) 1985-11-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4789172A (en) * 1987-12-07 1988-12-06 Schwinn Bicycle Company Bicycle seat post clamp mechanism
US6957856B2 (en) * 2003-07-14 2005-10-25 Tien Hsin Industries Co., Ltd Bicycle seat post

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2231654A (en) * 1937-11-29 1941-02-11 Milwaukee Saddlery Company Bicycle seat
FR2481668A1 (en) * 1980-05-05 1981-11-06 Frelat Jean Saddle fixing on bicycle frame - is held by split strap joining rear forks fixed by countersunk head screws connecting strap webs

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2231654A (en) * 1937-11-29 1941-02-11 Milwaukee Saddlery Company Bicycle seat
FR2481668A1 (en) * 1980-05-05 1981-11-06 Frelat Jean Saddle fixing on bicycle frame - is held by split strap joining rear forks fixed by countersunk head screws connecting strap webs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4789172A (en) * 1987-12-07 1988-12-06 Schwinn Bicycle Company Bicycle seat post clamp mechanism
US6957856B2 (en) * 2003-07-14 2005-10-25 Tien Hsin Industries Co., Ltd Bicycle seat post

Also Published As

Publication number Publication date
FR2550153B1 (en) 1985-11-08

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