SE124503C1

SE124503C1 -

Info

Publication number: SE124503C1
Authority: SE
Publication date: 1949-01-01

Description

KLASS 63 k:14 BESKRIVNING OFFENTLIGG3ORD AV KUNGL. PATENT- OCH REGISTRERINGSVERKET BEVILJAT DEN 27 JANUAR' 1949 PATENTTID FRAN DEN 22 MARS 1945 PUBLICERAT DEN 29 MARS 1949 Ans. den "/, 1946, nr 8170/1946. Hdrtill en ritning. CLASS 63 k: 14 DESCRIPTION PUBLIC WORD BY KUNGL. PATENT AND REGISTRATION AUTHORITY GRANTED ON 27 JANUARY '1949 PATENT PERIOD FROM 22 MARCH 1945 PUBLISHED 29 MARCH 1949 Ans. the "/, 1946, No. 8170/1946. Hdrtill a drawing.

L. C. H. JITY, DIJON, FRANKRIKE. L. C. H. JITY, DIJON, FRANCE.

Variabel utvaxlingsanordning vid veloeipeder med flera olika stora kedjedrev p bakhjulet. Variable gear device for veloeipeds with several different size sprocket gears on the rear wheel.

Prioritei begard frdn den 22 mars 1944 (Frankrilce). Priority requested from March 22, 1944 (Frankrilce).

Det finns flera ,anordningar for att overfora en cykelkedja fran det ena till det andra av tva ph velocipedens bakhjul fasta kedjehjul av olika diameter. En anordning ãr forsedd med en spannrulle for kedjan, som vid Over-boring fran det storre kedjehjulet, se fig. I ph bifogade ritning, till det mindre kedj ehjulet, se fig. II, orsakar for liten omfattning av kedjan pa kedjehjulet. En .annan anordning anvander tva. spannrullar fOr kedjan, men liar den olagenheten, att det blir svart att avmontera bakhjulet och att kedj an hanger langt ner. There are several devices for transferring a bicycle chain from one to the other of two rear wheels of the two ph velocipede fixed sprockets of different diameters. A device is provided with a tension roller for the chain, which during over-drilling from the larger sprocket, see Fig. 1 in the accompanying drawing, to the smaller sprocket, see Fig. II, causes too small an extent of the chain on the sprocket. Another device uses two. tension rollers for the chain, but suffer from the inconvenience that it becomes black to remove the rear wheel and that the chain hangs far down.

FOreliggande uppfinning avser en variabel utvaxlingsanordning vid velocipeder med flera olika stora kedjedrev ph bakhjulet, bestaende av ett baste pa bakre delen av velocipedens ram och en lank mellan fastet (Ai en rorlig arm, som uppbar tva spannrullar for kedjan. Den kannetecknas darav, att en Odder är fast maimn velocipedens rain och lanken, sa att en av spannrullarna tryckes mot kedjan, alt namnda spannrulle dr vridbar ph en i lankens fria ande fast bult, pa vilken aven den rorliga armen hr vridbar i sin ena a.nde och i sin andra ande uppbar den andra spannrullen, att omkring bulten hr anbragt en skruvformig tryckfjader, vars ena ande är fast ph den rorliga armen, medan dess andra ande Or fast I ett av flera spar i en ph bulten fast kronmutter fOr att vrida den rorliga armen sa, att dess spannrulle Mlles anliggande mot kedjan, samtidigt som tryckfjadern motverkar ett genom bulten gaende dragorgan, som Or fast i den reorliga armen for att under dragning kunna fora Over namnda arm och darmed kedjan fran ett bakhjulsdrev till ett annat under tryckfjaderns hoptryckning, varunder lanken fran att vara riktad framht och den rorliga armen bakat bores sa, att lanken och armen byta riktning. The present invention relates to a variable gear device for velocipedes with several different chain sprockets on the rear wheel, consisting of a base on the rear part of the frame of the velocipede and a link between the fastener (A movable arm, which carried two spool rollers for the chain. Odder is fixed maimn velocipedens rain and lanken, so that one of the tension rollers is pressed against the chain, all the said tension roller there rotatable ph a in the free spirit of the lanken fixed bolt, on which also the movable arm is rotatable in its one end and in its other spirit, the other spinneret, that around the bolt here is placed a helical compression spring, one spirit of which is fixed to the movable arm, while its other spirit is fixed in one of several grooves in a bolt bolted crown nut to rotate the movable arm so, that its tension roller Mlles abuts against the chain, at the same time as the compression spring counteracts a tensioning member passing through the bolt, which is fixed in the rigid arm in order to be able to pass over the said arm during pulling and h thus the chain from one rear-wheel drive to another during the compression of the compression spring, during which the link from being directed forward and the movable arm baked bores so that the link and the arm change direction.

Ritningen visar i fig. III—V schematiskt en utforingsform av utvaxlingsanordningen enligt uppfinningen. The drawing schematically shows in Figs. III-V an embodiment of the gearing device according to the invention.

Ph ett baste a pa velocipedens ram utgor en bult I faste for ena anden av en spannlank 3, i vars andra ande en bult 4 uppbar dels en spannrulle 5, dels en ande av en spannarm 6, vars andra ande Or forsedd med annu en spannrulle 7. En fjader 11 Or anbragt mellan velocipedramen och lanken 3 och stravar att trycka spannrullen 5 mot kedjan 14. Ph velocipedens bakhjul är fast ett par kedjehjul 2 och 2' av olika diameter. Ph a base a on the frame of the velocipede forms a bolt fixed to one end of a clamping slat 3, in the other end of which a bolt 4 carried partly a clamping roller 5, partly a spirit of a clamping arm 6, the other end of which is provided with another clamping roller 7. A spring 11 Or arranged between the velocipedram and the link 3 and straws to press the tension roller 5 against the chain 14. The rear wheels of the Ph velocipede are fixed to a pair of sprockets 2 and 2 'of different diameters.

Ett dragorgan 9 hr fast vid bulten 4 och kan maniivreras av den ph velocipeden akande for att, vid utvaxlingsanordningens omkastning, d. v. s. drivkedjans 14 Overforande fran det ena kedjehjulet till det andra, spanna kedjan, varvid delarna vid drift ph det storre kedjehjulet 2' intaga det i fig. IV visade laget och vid drift pa det mindre kedjehjulet 2 intaga det i fig. V visade laget. I det fOrra fallet Or Milken 3 riktad snett franaht-nedat och kedjan 14 spannes endast av rullen 5. I det senare ballet Or lanken 3 riktad rakt nedat och spannarmen. 6 uppsvangd, sa att den andra spannrullen 7 hailer kedjans 14 undre part intill kedjehjulet 2, som darvid omfattas av kedjan ph en storre del av sin omkrets On det eljest skulle Ora. A tensioning member 9 is fixed to the bolt 4 and can be actuated by the velocipede so as to, during the reversal of the gear unit, i.e. the drive chain 14, transferring from one sprocket to the other, clamp the chain, the parts during operation of the larger sprocket 2 ' in Fig. IV the layer shown and when operating on the smaller sprocket 2 occupy the layer shown in Fig. V. In the former case Or Milken 3 directed obliquely franaht-down and the chain 14 is tensioned only by the roller 5. In the latter ball Or lanken 3 directed straight downwards and the tension arm. 6 suspended, so that the second tension roller 7 hails the lower part of the chain 14 next to the sprocket 2, which is thereby covered by the chain ph a larger part of its circumference On it otherwise would Ora.

En skruvflader 10 omkring bulten 4 ar med sin ena ande fast vid lanken. 3 medelst en kronmutter 12, som Or forsedd med ett flertal urtagningar, i vilka fjfideranden kan inforas alit efter den spanning, som onskas, in.3- dan fjaderns andra ande Or fast vid spannarmen 6 medelst en bricka 13. Denna fjader stravar att fora rullen 7 upp mot kedjan. A screw face 10 around the bolt 4 is with one end attached to the tongue. 3 by means of a crown nut 12, which Or is provided with a plurality of recesses, in which the spring edge can be inserted alit according to the tension desired, before the second end of the spring is fixed to the clamping arm 6 by means of a washer 13. This spring tends to feed the roller 7 up towards the chain.

Dragorganet 9 genomgar en. klack 8 pa spannlanken 3 och gar vidare in genom bulten 4 till brickan 13, dar dess ande Or fast. Nar dragning sker i organet 9 fores spannarmen 6 i fig. III Over at hoger mot verkan av fjadern 10. Darefter eller samtidigt darmed medfores lanken 3 under vidare dragning i organet 9, sh att denna lank 3 vrides medurs i fig. IV ornkring fastet 1 och kommer i laget enligt fig. V, varvid fjadern samtidigt vridit upp spannarmen 6, som spanner kedj an 14. Nar dragningen i organet 9 upphor, Ater-Bras delarna till laget enligt fig. III och IV av fjadern 10. — — The traction member 9 undergoes one. lug 8 on the bucket 3 and goes further in through the bolt 4 to the washer 13, where its spirit Or is fixed. When pulling takes place in the member 9, the clamping arm 6 in Fig. III is moved above that which is higher against the action of the spring 10. Then or at the same time the string 3 is carried during further pulling in the member 9, so that this string 3 is turned clockwise in Fig. IV around the fastener 1 and enters the team according to Fig. V, the spring simultaneously turning up the clamping arm 6, which spans the chain 14. When the tension in the member 9 ceases, the Ater-Bras parts of the team according to Figs. III and IV of the spring 10.

Claims

1. Patent claim: Variable gearing device for velocipedes guided several different large chain gears ph the rear wheel, consisting of a fixed (a) on the rear part of the frame of the velocipede and a long (3) between the fixed and a movable arm (6), which carried two tension rollers for the chain (14), characterized in that a spring (11) is fixed between the frame of the velocipede and the link (3), that one of the tension rollers (5) is pressed against the chain (14), that said tension roller (5) is rotatable on a bolt (4) fixed in the free spirit of the tongue (3), on which the movable arm (6) is also rotatable in its one spirit and in its other spirit the other tension roller (7) supported, that around the bolt is placed a helical compression spring (10), one end of which is fixed to the movable arm (6), while the other end is fixed in one of several grooves in a crown nut (12) fixed to the bolt (4) to rotate the movable arm ( 6) that its clamping roller (7) is kept abutting against the chain (11), at the same time as the compression spring (10) counteracts a pulling member (9) passing through the bolt (4) ), som at fast i den rorliga armen (6) for att under dragning kunna fora Over namnda arm (6) och darmed kedjan. (14) from one rear wheel drive (2 ') to another (2) during compression of the compression spring, during which the tongue (3) is allowed to be directed forward and the movable arm. (6) baked fares so that the lanken (3) at directed downwards and the arm (6) upwards. Stockholm 1949. Rung '. Boktr. P. A. Norstedt & Met 490089 '