TWI445644B - Of labor-saving devices bike - Google Patents

Description

Bicycle labor saving device

The invention relates to a labor saving device for a bicycle, in particular to a bicycle gear speed which can be used to help save the force and increase the speed of the bicycle. The connecting rod provided at the rear wheel extends to the frame and acts in conjunction with the pedal to move the large and small gears. The rear wheel movement is used to effectively save the force of the force device.

Recently, the bicycle industry has developed rapidly, the speed of bicycles has become faster and faster, the use of materials has become more and more demanding, and the length of the pedal force has been fixed to transmit the gears. In order to effectively balance the intensive forces, the speed of operation is maintained. It is usually necessary to provide a suitable link length acting device for transmitting the gear running through the chain to drive the rear wheel driving speed operation.

As shown in the first figure and the second figure, it is a conventional pedal and connecting rod of a bicycle, and transmits a large gear and a small tooth to drive a rear wheel operating device. The driving vehicle includes a vehicle body 01a, and the vehicle body 01a is disposed. There is a frame 02a on which the front wheel 03a, the brake device 05a, the shaft steel ball 11a, the large gear 12a, the pinion gear 13a, the ratchet wheel 15a, the card block 18a, the chain 19a, the transmission shaft 21a, the elastic ring 23a, The handle 24a is provided with a frame 02a in the body 01a. The pedal 06a and the link 07a can be used to transmit the large gear 12a to drive the pinion 13a of the rear wheel 04a via the chain 19a.

The bicycle pedal and the connecting rod of the conventional bicycle are coupled to the gear, and the gear is driven by the chain to drive the rear wheel to operate. The transmission of the gear through the length of the connecting rod of the pedal acts to drive the rear wheel through the chain, but the connecting rod of the pedal force cannot be increased. The length, therefore, even if the length of the link is increased, there is a danger that the effect of the labor-saving linkage is greatly discounted.

The invention provides a labor saving device for a self-shaped vehicle, comprising a vehicle body, a frame, a plurality of pedals, a plurality of connecting rods, a plurality of bearings, a plurality of shaft steel balls, a plurality of ratchets, a plurality of large and small gear bodies, and a plurality of a ratchet, a plurality of khaki blocks, a plurality of chains, a plurality of expansion bodies and a plurality of safety blocks, the one end of the link is disposed on the left and right sides of the transmission shaft and is corresponding to the large gear body, and The other end extends to the frame and connects the pedal, so that when the pedal moves the link up and down, the ratchet transmission gear is rotated, the set of pinion gears are transmitted, and the acceleration speed is operated. The large gear drives the other set of pinion gears to transmit the large gears, converts the acceleration speed operation, drives the rear gears by the complex conversion gear acceleration speed, and the link extends from the rear wheel to the frame and the pedal connection position The arrangement is to form a labor-saving device for a bicycle with better labor saving.

The invention provides a labor saving device for a bicycle, which utilizes a connecting rod to extend from the rear wheel to the length of the frame to assist the effective saving of the bicycle force to maintain the running speed, and then drive the large gear and the other set of pinion transmission The large gears are used to convert the gears and accelerate the rear wheels. Therefore, it can save the force and effectively operate at the driving speed.

Please refer to the third, fourth, fifth, sixth and seventh figures. The present invention provides a labor saving device for a bicycle, which is provided on the bicycle. The bicycle includes a vehicle body 01 having a frame 02, a handle 24 disposed on the frame 02, and a front wheel 03. a rear wheel 04, and a pedal 06 disposed on two sides of the frame 02; the other labor-saving device has a fixed shaft 25 disposed inside the rear wheel 04, and a transmission shaft disposed on the fixed shaft 25 21, a large gear 12 is disposed on each of the left and right sides of the transmission shaft 21, and a ratchet 15 coupled with the large gear 12 is disposed at one end of the ratchet 15 and at the other end to the frame 02 and The connecting rods 08 and 09 connected to the pedal 06 and the multi-array-sized gear body 14 are disposed on the transmission shaft 21 corresponding to the frame 02 and the rear wheel 04, and at the same time, the corresponding gear body 14 of the size A chain 19 is provided to convert the acceleration connection to the pinion 13 disposed on the inner side of the transmission shaft 21 to transmit the transmission shaft 21 to drive the rear wheel 04 to move. The each of the large and small gear bodies 14 includes a large gear and a small gear. Composed of.

In particular, in the present embodiment, a one-way bearing 26 corresponding to the large gear 12 is disposed on each of the left and right sides of the transmission shaft 21, and the one-way bearing 26 is engaged with the large gear 12 to drive and retreat during the current advancement. When the transmission shaft 21 moves away from the transmission shaft 21, a ratchet wheel 16 is disposed inside the left and right ratchets 15, and a shaft steel ball 11 is mounted between the ratchet teeth 16, 17 and the transmission shaft 21, and the transmission shaft 21 is provided with an elastic ring 23 for holding a tapered card-shaped block 18. Further, the labor-saving device is provided with a safety block 22 under the links 08 and 09, and the safety block 22 is framed by the frame. 02 is outwardly protruded, and at the same time, the frame 02 is provided with a telescopic body 20 above the connecting rods 08 and 09, and the telescopic body 20 is connected with the connecting rods 08 and 09 to make the connecting rod 08, 09 applies the downward force to assist the return of the connecting rods 08 and 09 to prevent the connecting rods 08 and 09 from being dangerous due to being too low.

Therefore, in use, when the right link 09 is pressed downward, the right ratchet 17 catches the card block 18, so that the ratchet 15 and the large gear 12 combine to rotate, and the large gear 12 drives the one-to-one. The pinion gear of the group size gear body 14 is coupled to the pinion gear of the other group of large and small gear bodies 14 via the chain 19, and the right ratchet teeth 17 disposed in the body of the ratchet 15 catch the card block 18. The drive shaft 21 is driven to drive the rear wheel 04. Conversely, when the right link 09 is not pressed to generate a lift, the right ratchet 17 is disengaged from the latch block 18 of the drive shaft 21, and the rear axle of the drive shaft 21 is 04 continues to operate, and the elastic restoring force of the telescopic body 20 can assist the right link 09 to rise, and the right link 09 has the setting of the safety block 22 to prevent the right link 09 from being oriented. The lower end is dangerous due to being too low, and the action generated by the right link 09 disposed on the right side is also copied to the left link 08 on the left side, so that the left side large gear 12 drives the first one. The pinion gear of the group size gear body 14 causes the large gear to be simultaneously transmitted by the chain 19 Another set of small and small gears of the large and small gear body 14 and the other chain 19 are steered to drive another set of large and small gear bodies 14 (that is, as shown in the seventh figure), so that the plural size is utilized. The gear body 14 performs transmission and conversion acceleration operation to drive the transmission shaft 21 to operate the rear wheel 04, and at the same time, the link 06 on the rear wheel 04 is extended to the pedal position, thereby forming a better one. A labor-saving device for labor-saving bicycles.

[Practical]

01a ‧‧‧Car body

11a ‧‧‧Axis steel ball

18a ‧‧‧Kach block

02a ‧‧‧ frame

07a ‧‧‧ Connecting rod

Article 19a ‧‧‧ practice

03a ‧‧‧ Front wheel

12a ‧‧‧ large gear

21a ‧‧‧Drive shaft

04a ‧‧‧Rear wheel

13a ‧‧‧小小齿轮

23a ‧‧‧elastic ring

05a ‧‧‧煞车器

15a ‧‧‧ ratchet

24a ‧‧‧ handle

06a ‧‧‧ pedal

17a ‧‧‧Round ratchet

25a ‧‧‧Fixed shaft

[This creation]

01 ‧‧‧Car body

12 ‧‧‧ large gear

21 ‧‧‧Drive shaft

02 ‧‧‧ frame

13 ‧‧‧ pinion

22 ‧‧‧Safety block

03 ‧‧‧ Front wheel

14 ‧‧‧Small gear body

23 ‧‧‧Elastic ring

05 ‧‧‧煞车器

04 ‧‧‧Rear wheel

15 ‧‧‧ ratchet

24 ‧‧‧ handle

06 ‧‧‧ pedal

16 ‧‧‧left ratchet

25 ‧‧‧Fixed shaft

08 ‧‧‧Left Link

17 ‧‧‧Right ratchet

26 ‧ ‧ one-way bearing

09 ‧‧‧Right link

18 ‧‧‧Kach block

10 ‧ ‧ bearing

19 ‧‧‧ chain

11 ‧‧‧Axis steel balls

20 ‧‧‧Flexible body

Figure 1 is a perspective view of a conventional bicycle.

Figure 2 is a partial cross-sectional view of a conventional bicycle transmission.

Figure 3 is a perspective view of the present invention.

Figure 4 is a partially exploded perspective view of the transmission of the present invention.

Figure 5 is a schematic exploded view of the transmission of the present invention.

Figure 6 is a top plan view of the present invention.

Figure 7 is a schematic top view of a transmission of another embodiment of the present invention.

01‧‧‧Car body

02‧‧‧ frame

03‧‧‧ Front wheel

04‧‧‧ Rear wheel

06‧‧‧ pedal

08‧‧‧Left Link

09‧‧‧Right link

12‧‧‧ Large gear

14‧‧‧Size gears

19‧‧‧Chales

20‧‧‧Flexible body

22‧‧‧Security block

24‧‧‧Hands

Claims (3)

A bicycle effort device is provided on the bicycle. The bicycle includes: a bicycle body having a frame, a front wheel, a rear wheel, and a pedal disposed on two sides of the frame; The labor-saving device has a fixed shaft disposed inside the rear wheel, and a transmission shaft disposed on the fixed shaft, wherein the transmission shaft is provided with a large gear on the left and right outer sides, and a ratchet coupled with the large gear. a connecting rod disposed at one end of the ratchet and extending to the frame at the other end and connected to the pedal, and a multi-array-sized gear body corresponding to the frame and the rear wheel on the transmission shaft At the same time, any two corresponding body teeth are provided with a chain to convert and accelerate the connection to the pinion gear disposed on the inner side of the transmission shaft, so as to transmit the transmission shaft to drive the rear wheel to move, and the labor-saving device is provided with a safety under the connecting rod. a block that protrudes outwardly from the frame, and a telescopic body is disposed on the frame and on the link, and the telescopic system is coupled to the link to cause the link to be downwardly When applying force Assisting the connecting rod to be reset; wherein each of the large and small gear bodies comprises a large gear and a small gear, so that the connecting rod provided on the ratchet rotates the large gear to apply the force downward, so that the operation is driven After the pinion of the set of large and small gear bodies transmits the large gear, the pinion transmission large gear transmission is transmitted through the chain to transmit the another set of large and small gear bodies, thereby transmitting the transmission shaft to drive the rear wheel movement. The bicycle effort device of claim 1, wherein the ratchets on the left and right sides are internally provided with a ratchet, and a shaft ball is mounted between the ratchet and the drive shaft, and the drive shaft is provided with a grip. An elastic ring forming a tapered card block, the ratchet catching the card block when the ratchet advances, so that the transmission shaft drives the large gear, and when the back is retracted, the card block is pressed out of the transmission Axis movement. The labor saving device for a bicycle according to claim 1, wherein the left and right sides of the transmission shaft are respectively provided There is a one-way bearing corresponding to the large gear. When the current one enters, the one-way bearing catches the large gear and moves away from the transmission shaft when retracting.