CN207523875U - Bicycle front-wheel drive device - Google Patents

Abstract

A kind of bicycle front-wheel drive device, including：One front hub,Two front-fork seats,One ratchet,One mandrel and two cranks are formed,The inside of the front hub forms a through-hole,Two front-fork seat is set on front hub,And therebetween all it is arranged with a bearing,The wheel rim of the ratchet is equipped with ratchet,And it is fixed at front hub one end,Through-hole inside the mandrel drawing-in front hub,And it is pierced by by the both ends of front hub,Two crank is respectively fixed at the both ends of mandrel,Wherein lean on the affixed driving lever in inside of ratchet overhung crank,The both ends of the driving lever are bent to form an extended segment respectively inwards,A prong is opened up at the ora terminalis of extended segment,Two prongs fit and can be snapped at ratchet wheel rim and be in line the outsides of corresponding two ratchets,Composition one can be with crank into circular motion whereby,It obtains driving lever and directly passes band ratchet wheel,And then drive front hub rotation,Bicycle to be driven to advance,And there can be construction simply,It is and rather light when riding,Labour-saving bicycle front-wheel drive device.

Description

Bicycle front-wheel drive device

Technical field

The utility model is a kind of related bicycle front-wheel drive device, and espespecially one kind can directly drive front-wheel using crank Flower hub rotation, rather light, labour-saving front wheel when bicycle to be driven to advance, and can have construction simply, and ride Driving device.

Background technology

Bicycle since the advent of the world, be adopt front-wheel steer, rear wheel drive mode is advanced.Rider is interacted with both legs Pedal of the position in vehicle body both sides is trampled, is rotated via crank handle turns toothed disc, is allowed to through chain conveyor, to interlock rear axle On gear rotation, and then drive bicycle advance.

But it is limited between the gear on toothed disc and rear axle, is both needed to through a chain conveyor, therefore can not be stepped on from both legs The kinetic energy rejection of pedal；In addition riding is after a period of time, chain easily generates relaxation, causes the thing for causing de- chain, being broken Occur, increased the inconvenience in repair on foot, also circumferentially moved since the both legs of rider need to follow crank, required is forward and backward Space length is larger, so that all maintain certain wheelspan between front and rear wheel, causes that vehicle frame is longer and vehicle body is higher indirectly, The pattern of bicycle is thus limited, different purposes can not be generally applicable to (such as：Reclining type recreation vehicle, perambulator) demand.

For this purpose, seeing then has dealer to develop the bicycle that more moneys adopt front-wheel drive, such as：Announcement Number the 566391st " from Drive a vehicle front wheel drive structural improvement ", No. M285524 " bicycle front-wheel drive device ", No. M434023 " before bicycle Case is all before wheel transmission device " etc..

But it looks into, the front wheel disclosed in such preceding case drives (biography) and moves device, and crank (joystick) is between front-wheel Combine component it is most complicated, and can not from gear, chain etc. indirectly pass band mode, therefore not only assembling on degree of difficulty It is higher, it is also rather laborious during riding；Especially see it is advantageous with the hands on pull down and push away steering yoke or rotation joystick, to drive front-wheel Demand person is rotated to be, but completely despite this control mode, the dangerous thing for easily causing direction of travel beat or even toppling over Occur, therefore significantly have part to be modified.

Utility model content

Technical problem underlying to be solved in the utility model is, overcomes drawbacks described above of the existing technology, and carries For a kind of bicycle front-wheel drive device, directly front hub is driven to rotate using crank, bicycle to be driven to advance, and can It is simple with construction and rather light, laborsaving during riding；It may be adapted to reclining type recreation vehicle, perambulator assembling uses.

Technical solution is used by the utility model solves its technical problem：

A kind of bicycle front-wheel drive device, including：One front hub, two front-fork seats, a ratchet, a mandrel and two cranks It is formed, the inside of the front hub forms a through-hole, and fix disk in fixed two spoke of periphery, which fixes the outer of disk Side, which respectively extends, sets a socket part, thread segment is equipped with wherein at the ora terminalis of side socket part, two front-fork seat is in a circular rings The outer rim of seat, which is obliquely extended, to be set an insertion pipe and forms, which is set on the socket part of front hub, and therebetween all A bearing is equipped with, for being put between front hub into coaxial group, and is not rotated with front hub, and the insertion pipe can be then provided from Driving front fork assembling is used, and the wheel rim of the ratchet is equipped with ratchet, and the inner face of wheel rim is nested with a unilateral bearing, which consolidates Thread segment in front hub side socket part, the mandrel are slightly longer than front hub, and the through-hole inside drawing-in front hub, should One end of two cranks is all pivoted a pedal, and its another end is fixed in mandrel, then should be by affixed one group on the inside of the crank at ratchet end Bar, the both ends of the driving lever bend out an extended segment, a prong are all provided at the ora terminalis of extended segment, two prongs, which are fitted, to be engaged respectively inwards It in the outside of two ratchet of ratchet wheel rim, is interlocked with being formed, forms one whereby using crank into circular motion, directly drive front-wheel Flower hub and mandrel rotation, it is rather light, laborsaving when bicycle to be driven to advance, and can have construction simply, and ride, it can more take Trailing wheel design with smaller outer diameter, is suitable for reclining type recreation vehicle or perambulator uses the bicycle front-wheel drive device of upper demand.

The beneficial effects of the utility model are directly front hub to be driven to rotate using crank, before driving bicycle Into, and can have construction simply, and rather light, laborsaving during riding；It may be adapted to reclining type recreation vehicle, perambulator assembling uses.

Description of the drawings

The utility model is further illustrated with reference to the accompanying drawings and examples.

Fig. 1 is the perspective exploded view of the utility model.

Fig. 2 is the sectional view of the utility model entire combination construction.

Fig. 3 is the assembling schematic diagram between the utility model and front wheel and front fork.

Fig. 4 is the close-up schematic view between the utility model ratchet and driving lever.

Fig. 5 is the implementation state reference map that the utility model applies to reclining type recreation vehicle.

Figure label explanation：

1. 11. through-hole of front hub

12. spoke fixes 13. spoke of disk and fixes disk

14. 15. socket part of socket part

16. 17. bearing of thread segment

18. 2. front-fork seat of bearing

21. 211. pilot hole of insertion pipe

22. 3. front-fork seat of bearing

31. 311. pilot hole of insertion pipe

32. 4. ratchet of bearing

41. 42. unilateral bearing of ratchet

421. internal thread, 5. mandrel

51. 52. external screw thread of external screw thread

6. 61. pedal of crank

62. 63. nut of assembly hole

64. 641. prong of driving lever

642. prong, 7. crank

71. 72. assembly hole of pedal

73. 8. front fork of nut

81. 811. pilot hole of breeches pipe

82. 821. pilot hole of breeches pipe

83. 84. bolt of bolt

Specific embodiment

Please refer to Fig. 1, Fig. 2, Fig. 3, the utility model includes：One front hub 1, two front-fork seats, 2,3, one ratchet 4, One mandrel 5 and two cranks 6,7 are formed, which is the tubular body of a tool suitable length, internal to form a through-hole 11, and be equipped with two spokes in its periphery and fix disk 12,13, it is used, and disk 12,13 is fixed in spoke for the spoke installing of front-wheel Outside, respectively extend a socket part 14,15, and thread segment 16 is equipped at the ora terminalis of side socket part 14, separately in through-hole In 11 both ends aperture, it is arranged a bearing 17,18 respectively.

Two front-fork seats 2,3 are all obliquely extended in the outer rim of a round ring seat and set an insertion pipe 21,31 and form, the circle ring seat Collar extension in be equipped with a bearing 22,32, for being inserted in respectively by the socket part 14,15 at 1 both ends of front hub, and will be before two Forked standard 2,3 respectively be installed in two spokes fix disk 12,13 outside, make between front hub 1 into coaxial arrangement, and not with Front hub 1 rotates；The outer diameter of two insertion pipe 21,31 sets the caliber together in 8 liang of breeches pipes of bicycle front fork 81,82 again (as shown in Figure 3), and two insertion pipes 21,31 pairings can be worn to the inside into two breeches pipes 81,82, coordinate on tube wall therebetween Several pilot holes 211,311,811,821 are correspondingly provided with, the rotation of bolt 83,84 can be provided with through therebetween, by two front-fork seats 2,3 and front fork It imposes and screws togather between 8, and then obtain to give on front-wheel and be installed on cycle frame.

The collar of ratchet 4 is arranged with several ratchet 41, and is equipped with a unilateral bearing 42 in the inner face of wheel rim (this is unidirectional Bearing is existing, without repeating), and it is equipped with internal thread 421 in the inner, it is allowed to have thread segment 16 by front hub 1 15 outer end of socket part screws in, it is given and is fixed on front hub 1, and can pass and unidirectionally be revolved towards the direction of advance with front hub 1 Turn.

Mandrel 5 is slightly longer compared with the length of front hub 1, in the through-hole 11 inside drawing-in front hub 1 and its aperture Bearing 17,18, and being pierced by by the both ends of front hub 1, make therebetween respectively flexible rotation, and being pierced by 5 both ends of mandrel External screw thread 51,52 is all equipped on end.

Two cranks 6,7 are correspondingly arranged in opposite directions in left and right, and one end is pivoted a pedal 61,71, and is formed and consolidated in another end Fixed end all penetrates through at the center of the fixing end and sets an assembly hole 62,72, for being inserted in respectively by the traversing through end at 5 both ends of mandrel, and It is respectively screwed in a nut 63,73 by external screw thread 51,52, two cranks 6,7 is given to the both ends for being fixed at mandrel 5, and in by ratchet 4 6 inside of crank at end is installed with one, and [driving lever 64 of font, the driving lever 64 respectively bend inwards to form one in the both ends of a flat segments Extended segment is formed (please refer to Fig. 4), and the half portion of the flat segments is fixed in the medial surface of crank 6, and in both ends extended segment Ora terminalis at offer a prong 641,642, two prong 641,642 is suitable can be snapped at 4 wheel rim of ratchet and is in line corresponding two On the outside of the tip edge of ratchet 41, make therebetween interlock really, in order to two pedals 61,71 can be trampled with the interaction of human body both feet, make two cranks 6th, 7 one-tenth circular motion, mandrel 5 to be driven to rotate, while the driving lever 64 of 6 inside of crank can directly pass band ratchet 4 and rotate, front-wheel flower Hub 1 can be rotated with front-wheel, and then bicycle is driven to advance.

The utility model can be really borrowed in the fixed driving lever 64 in the inside of crank 6, and at the 64 both ends extended segment ora terminalis of driving lever Prong 641,642, suitable can be snapped on 4 wheel rim of ratchet is in line on the outside of the tip edge of corresponding two ratchets 41, that will give therebetween Really it interlocks, and the complicated transmission component such as existing chain, gear can be given up completely, thus it is not only structurally very simple, more may be used Conducive to assembling；Again when riding, two pedals 61,71 can be trampled with both feet interaction, make two cranks 6,7 one-tenth circular motion, to utilize Driving lever 64 directly passes band ratchet 4 and rotates, and front hub 1 is driven to be rotated with front-wheel, and then bicycle is driven to advance, therefore can be effective The kinetic energy rejection of double-legged pushes pedals 61,71 is reduced, reaches light, labour-saving utility model effectiveness.

Clear cooperation is refering to Fig. 5 again, as it can be seen that the front-wheel that the utility model assembles in figure, the wheel footpath that can arrange in pairs or groups significantly compared with Small trailing wheel to shorten vehicle frame length and bodywork height, effectively reduces body gravity, and stability and peace when can promote riding Quan Xing, be suitable for reclining type recreation vehicle, perambulator use on demand.

The above descriptions are merely preferred embodiments of the present invention, and not the utility model is made in any form Limitation, it is every according to the technical essence of the utility model to above example made it is any it is simple modification, equivalent variations with Modification, in the range of still falling within technical solutions of the utility model.

In conclusion the utility model in structure design, using on practicability and cost-effectiveness, comply fully with industry development It is required, and revealed structure is also to have unprecedented innovative structure, has novelty, creativeness, practicability, meeting has The regulation of utility model patent important document is closed, therefore lifts application in accordance with the law.

Claims (4)

1. a kind of bicycle front-wheel drive device, which is characterized in that including：One front hub, one through-hole of internal formation, and in Periphery is equipped with two spokes and fixes disk, and the outside that two spokes fix disk respectively extends the end for setting a socket part, wherein side socket part Thread segment is equipped at edge；Two front-fork seats are obliquely extended in the outer rim of a round ring seat and set an insertion pipe and form, the circle ring seat Collar extension in be all equipped with a bearing, and be set in the socket part of front hub both sides respectively；One ratchet, wheel rim are equipped with spine Tooth, and it is fixed at the thread segment at the ora terminalis of front hub side socket part；One mandrel, it is slightly longer compared with the length of front hub, and wear It is pierced by through the through-hole inside front hub, and by the both ends of front hub；Two cranks, one end are pivoted a pedal, and another end is each From the both ends for being fixed at mandrel, wherein by an affixed driving lever on the inside of the crank at ratchet end, the driving lever is each in the both ends of a flat segments From bending inwards out, an extended segment forms, and a prong is opened up at the ora terminalis of extended segment, and two prongs, which are fitted, can be snapped at ratchet Wheel rim is in line on the outside of the tip edge of corresponding two ratchets, is interlocked with being formed.

2. bicycle front-wheel drive device according to claim 1, which is characterized in that the two of the front hub interior bone In stomidium mouth, be arranged with a bearing, and mandrel drawing-in bearing, make therebetween respectively flexible rotation.

3. bicycle front-wheel drive device according to claim 1, which is characterized in that the grafting pipe outside diameter of two front-fork seat Caliber together in two breeches pipe of bicycle front fork is set, and corresponding hair has pilot hole on tube wall therebetween, and will can therebetween applied It is set with screwing togather group.

4. bicycle front-wheel drive device according to claim 1, which is characterized in that the rim internal face of the ratchet is equipped with One unilateral bearing, the interior of the unilateral bearing is equipped with internal thread, for it to be given to the spiral shell being fixed at the ora terminalis of front hub side Line section makes front hub towards the direction single direction rotation of advance.