Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
  • B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
  • B62J6/06—Arrangement of lighting dynamos or drives therefor
  • B62J6/10—Gear drives

Definitions

• the invention relates to a dynamo for / on bicycles, with a housing which can be fixed on the bicycle, accommodates a stator and a rotor, the rotor being able to be rotated by a drive part which can be driven by a bicycle wheel.
• Such known dynamos are attached to the bicycle fork and have as a drive part a wheel, which rolls on the tires.
• the disadvantage here is that the wheel does not twist due to dirt or snow and ice, but instead slips along the tires so that no electricity can be generated.
• the dynamo loosens in its attachment to the wheel fork and then gets between the spokes, which leads to accidents.
• dynamos are known which have a wide pressure roller as the drive part, which also rolls on the tires.
• the drive parts that roll on the tires can cause damage to the tires if they are used for a long time.
• the object of the invention is to provide a dynamo machine which is constructed simply and in a cost-saving manner and which, on the one hand, can be fixed securely on the bicycle and, on the other hand, is provided with a permanently safe and optimal movement transmission from the bicycle wheel outside the tires for power generation.
• the dynamo according to the invention has a simple and cost-saving design and can be secured in a simple manner on the bicycle in a positionally secured manner.
• the dynamo is preferably plugged onto a wheel axle, preferably the front wheel axle, of the bicycle and then practically represents an axle alternator.
• a drive part preferably a gearwheel or circumferential housing cover
• this drive part gives the wheel run determined by it
• Rotary motion via a gearbox on the rotor, which is coaxial or eccentric to the wheel axle, so that the rotary motion is transmitted outside the tires and is therefore not affected by external influences such as dirt, snow, ice, because of the torsion-proof connection of the drive part and wheel no slipping or sliding movements can occur.
• the drive part with gear, stator and rotor are sealed in a housing to the outside and form a compact structural unit with the housing.
• the dynamo can be stored on the bike in a torsion-proof manner by plugging it onto the wheel axle and in connection with the wheel fork. Furthermore, there is also the possibility of attaching the dynamo to the wheel fork outside the wheel axis, in which case its transmission is also connected to the drive part seated on the wheel axis.
• the dynamo can easily be retrofitted to any bike. Exemplary embodiments according to the invention are explained in more detail below with reference to the drawings. It shows:
• FIG. 1 is a perspective view of a bicycle with a dynamo arranged on the front wheel axle
• Fig. 3 shows a horizontal section through the same dynamo machine.
• FIG. 4 is a side view of a dynamo machine in a further embodiment and in the position mounted on the front wheel axle,
• FIG. 5 is an end view of the dynamo machine of FIG. 4,
• FIG. 7 is a side view of a dynamo machine in a further embodiment
• FIG. 8 shows a section through the dynamo machine according to section line I-I in FIG. 7.
• the drive part (4) is fixedly connected to the wheel (5) about the wheel axis (6) or can be rotatably connected in a rigid manner and forms part of a gear (7) which rotates the rotor (3) depending on the wheel rotation and can be switched on and off. the dynamo.
• a gear. (7) can be provided in the housing (1) a helical gear, a bevel gear or a planetary gear, the drive part (4) always forming part of this gear and rotatable with the wheel (5) in the region of the axis (6) connected is.
• the drive part (4) which is designed as a gearwheel in this embodiment, is mounted centrally on the wheel axle (6) and connected to the wheel (5) by drivers (8); as drivers (8), for example, screws can be provided which are screwed into the hub flange (9) or fingers are provided on the drive part (4) which engage in the hub flange (9) or between the spokes (10).
• a spur gear (7) is provided in the housing (1) and a U-shaped bearing bracket (11) around the wheel axis (6) with different lengths of U-leg (11a, 11c). with at least one leg (11a), preferably its longer leg, mounted and held in the housing (1) in a rotationally fixed manner; for example, the U-shaped bearing bracket (11) with its web (11b) lies between two molded strips (12) in the housing (1).
• An output gear (13) is rotatably mounted on the shorter U-leg (11c) of the bearing bracket (11) and meshes with the drive part (4).
• the axis (14) of the driven gear (13) extends up to the longer leg (11a) and on this axis (14) sits near the leg (11a) a transmission gear (15) which is in engagement with a gear (16) , which is provided on or around the rotor (3), so that from the drive part (4) via the driven gear (13) and the transmission gear (15) the gear (16) and thus the rotor (3) is rotated and that in a certain gear ratio.
• the driven gear (13) can be rotated with the axis (14) and at the same time is displaceably mounted on the axis (14), so that it is in engagement with the drive part (4) in one displacement position and is disengaged in the second displacement position - this displaceability of the driven gear wheel (13) enables the gearbox (7) to be switched on and off and thus a rotational movement transmission and interruption from the wheel (5) to the rotor (3).
• the output gear (13) can be moved by means of a rotary or tilting lever (17) protruding from the housing (1) on the top, for example, in Fig. 2 and 3, a rotary lever (1 7) Dargestel lt with a eccentric tab (17a) is connected to the driven gear (13) and when twisted, this tab (17a) causes a displacement of the gear (13).
• An actuating button (17b) is provided on the rotary lever (17) at the end lying outside the housing (1).
• a compression spring (18) arranged around the axis (14) is supported between the two gear wheels (13) and (15) and holds or brings the gear wheel (13) into the switched-on gear position.
• the Gerissause.e- (l) is preferably made of two parts made of plastic and has a streamlined shape.
• a recess (19) is provided on the top side in the plastic housing, through which a strut of the wheel fork (20) engages in the dynamo machine and is fixed on the wheel axle.
• the strut of the wheel fork (20) lies between the drive part (4) and the rotor (3).
• 21 denotes an electrical cable which is led from the stator (2) out of the dynamo machine, preferably through the recess (19) and is connected to the lighting of the bicycle for the power supply.
• the entire dynamo machine is secured against rotation on the wheel axle (6) by the wheel fork (20) engaging in the housing (1). It is within the scope of the invention, the dynamo outside the wheel axis (6), z. B. on the wheel fork (20), the drive part (4) then sitting on the wheel axle (6) and the driven gear (13) then also being connected to the drive part (4). In this embodiment, the stator (2) and rotor (3) and the gear (16) would then no longer be coaxial to the wheel axis (6), but would be eccentric to it.
• the housing (1) for the transmission (7) is also arranged fixed on the wheel axle (6), the stator (2) and the rotor (3) are eccentric to the wheel axis (6) in the housing (1) and the drive part (4) is formed by a circumferential housing cover, which can be connected to the wheel (5) via a switch-on and switch-off element (22) and is solvable.
• the housing (1) forms a housing for the stator (2) and rotor (3) and at the same time for the gear (7).
• This housing (1) has a bearing bush (23) with which it is pushed, preferably pressed, onto a receiving bush (24) seated on the wheel axle (6) and is held in a rotationally fixed manner by the wheel axle nut (25).
• a shell-shaped housing part (26) which is coaxial with the wheel axis (6) and is circular in its basic form, to which a pot-like housing part (27) with cover (28) lying eccentrically to the wheel axis (6). connects.
• the stator (2) with coil (2a) is mounted in the pot-like housing part (27) and the rotor (3) is housed, with its rotor shaft (29) on the one hand in the cover (28) closing the housing part and on the other hand in the housing part (27 ) is rotatably mounted.
• the drive part (4) has an oval basic shape, is rotatably mounted about the receiving bush (24) with the interposition of a roller and / or slide bearing (30) and closes the housing part (26) with a circumferential seal (31), such as rubber and Labyrinth seal, tight.
• An internally toothed ring gear (32) is fastened to the drive part (4) and preferably has straight teeth.
• a shaft (34) is mounted in the housing part (26) with the interposition of a roller and / or sliding bearing (33), said shaft (34) meshing with a preferably toothed gear (35) meshing with the ring gear (32) and a second gear (36) arranged coaxially thereto ) rotatably, this second, larger gear (36) engages with a gear (37) seated on the shaft (29) of the rotor (3).
• the two gears (36, 37) are preferably designed with helical teeth.
• the on and off element (22) is arranged in / on an oval length end region of the drive part (4) and has a bolt-shaped driver (38) which runs approximately parallel to the wheel axis (6) and which is mounted on one of the drive parts (4) Shift rocker (39) with and switch-off pushbuttons (E, A) is fastened, preferably on the switch-on pushbutton (E) outside the shift rocker pivot axis.
• the driver (38) establishes the movement connection of the drive part (4) to the spokes (10) and the rotary movement of the gear (7) is initiated by the rotating drive part (4).
• the driver (38) is pushed between the spokes (10) and, when the wheel (5) is rotated, the driver (38) is taken along and thus the drive part .l (4) twisted.
• the toothed ring (32) rotating with the drive part (4) drives the fixed gear (35) and this in turn drives the gear (36) via the common shaft (34), which then sits the gear on the rotor shaft (29) (37) and thus rotates the rotor (3).
• the gearbox (7) is designed in two stages and has one
• a reflector (41) is arranged on the oval length end region of the drive part (4) opposite the switch-on and switch-off element (22). This reflector (41) and the switching rocker (39), which is preferably also reflective, creates two circumferential light points, which additionally contribute to the safety of the cyclist.
• connection cables of the dynamo machine are embedded in the form of two plugs (42) in the fixed housing (1) (housing part 27) and are connected to the power cables (21) that lead to the front and rear lights.
• the receptacle (24) has the task of positioning the dynamo on the front wheel axle (5) in a rotationally fixed and centric manner.
• the dynamo or the recessed receptacle (24) can be attached to the wheel axle (5) in a few easy steps, adjusted between the bicycle fork (20) and the lower mudguard mounting rod (43) and then with the provided nut (25) Tighten the front wheel axle (6).
• the dynamo sits in the protective area between the bicycle fork (20) and the spokes (10) without touching them (Fig. 4).
• the bulge of the fixed housing (1) namely the housing part (27) for the stator (2) and rotor (3), remains within the length of the front wheel axle specified by the bicycle manufacturer.
• the housing (1) and the drive part (4) as well as the gear wheels (32, 35, 36, 37) are made of plastic.
• the drive part 1 (4) is drawn with its driver (38) in the rotated position when the driver (38) lies in the area of the stator (2) and rotor (3), that is to say 270 by comparison with FIG. 4 Degrees twisted.
• the further third embodiment of the dynamo according to FIGS. 7 and 8 corresponds in the basic principle and structure of the dynamo according to FIGS. 4 and 6 and the same reference numbers have been used for the same components.
• the housing (1) preferably in the form of a steel body base bracket, is also fixed on the wheel axle (6) with a bearing bush (23).
• a large toothed belt pulley (45) extends around this bearing bush (23) in the housing (1) and a small toothed belt pulley (46) sits on the rotor shaft (29).
• a toothed belt (44) runs around these two toothed belt pulleys (45, 46) and is held under tension by a tensioning roller (47).
• the drive part (4) has an oval basic shape and in the smaller oval area is the housing part (27) with cover (28), in which the stator (2) and rotor (3) as well as the toothed belt pulley (46) and tensioning roller (47) and one Power cable connection flap (48) with connection (49) made of brass for the power cable (21) are provided.
• the switch-on and switch-off element (22) is mounted on a bracket (50) arranged on the housing part (27) and has a driver lever (52) with spring locking system (53) which can be pivoted about an axis (51).
• the large toothed belt pulley (45) extends around the bearing bush (21) in a housing ring (54) made of plastic and is injection molded therein, this housing ring (54) merging into the housing part (27) and forming a unit with it.
• the bicycle dynamo With the on / off switch (22) the bicycle dynamo is put into operation by pushing the driver (52) between the spokes (10). In the switched-off state, the wheel (5) rotates freely as in the normal state without any additional load.
• the on / off element (22) is moved against a compression spring (53) which, by means of two marked positions, only permits the on or off state.
• the driver bracket (50) is connected once to the on / off switch (22) and to the toothed belt pulley (45), which is set in rotation by these two.
• the toothed belt (44) drives the toothed belt pulley (46) and thus the rotor (3).
• the power cables (21) of the front and back people are switched on by the foldable power cable connection flap (48) in the circuit of the dynamo m. Installation is carried out by removing a lock nut from the wheel hub and the washer of the wheel axle (6) (wheel hub).

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Priority Applications (7)

Applications Claiming Priority (4)

Publications (1)

Family

ID=25845538

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (2)

Citations (8)

Family Cites Families (2)

• 1987
  • 1987-06-25 BR BR8707380A patent/BR8707380A/pt unknown
  • 1987-06-25 WO PCT/EP1987/000339 patent/WO1988000549A1/de unknown
  • 1987-06-25 JP JP62503911A patent/JPH01500260A/ja active Granted
  • 1987-06-25 HU HU873435A patent/HUT46871A/hu unknown
  • 1987-07-07 CS CS875156A patent/CS262694B2/cs unknown
  • 1987-07-11 CN CN87104856.6A patent/CN1011010B/zh not_active Expired

Patent Citations (8)

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