TW202028052A - Power increasable crank apparatus for human-powered vehicle - Google Patents

Abstract

A power increasable crank apparatus for human-powered vehicle includes a crank mechanism, a plurality of balls and a force-increasing rotate arm. The crank mechanism includes a crank, a shaft end gear and a footstep end gear. The shaft end gear and the footstep end gear are arranged two ends of the crank. The crank having a contain ball channel and communicate the shaft end gear and a footstep end gear. Each ball is in contact with each other. One part of the ball and the shaft end gear transmission, the other part of the ball and footstep end gear transmission, the rest of the ball is placed in the contain ball channel. The force-increasing rotate arm is connected to the footstep end gear.

Description

Increased pedaling crank device of rickshaw

The present invention relates to a crank pedal technology, especially a pedal crank device of a rickshaw.

Nowadays, people mostly spend part of their time for physical health or to reduce harmful gas and carbon emissions, such as jogging, walking or cycling. Among them, cycling has short and medium-range The tourism effect, so it can make the body, mind, and spirit of the rider get the best relief, and under the large and wide bicycle lanes in various counties and cities, biking has obviously become one of the most popular activities of the whole people. One.

The crank of a conventional bicycle is a rod with a fixed length, which is used to connect the pedals to the central axis of the bicycle. During the operation of the bicycle, the user steps on the pedals so that the pedals rotate around the central axis. The length of the crank is the circular movement of the radius, and drives the bicycle driving device such as chainring, chain and other components to make the bicycle move forward.

The existing pedal crank devices widely used in bicycles cannot extend the crank of the pedal to increase the length of the lever arm when the pedal is rotated to the required force. Therefore, the effect of increasing the torque cannot be achieved. Perhaps some are designed with the feature that the crank can be stretched, but the design of these stretched cranks is not ergonomic, and cannot make a regular and inertial circular motion. It is essentially a laborious design. It is not only complex in structure but also easy Stepping on the crank device that causes fatigue of the user.

In view of this, the inventor of the present invention focused on the above-mentioned shortcomings of the prior art, and made great efforts to solve the above-mentioned problems, which became the goal of the present inventor's improvement.

One of the objectives of the present invention is to provide an increased pedaling crank device for a rickshaw, which increases the torque by increasing the length of the applying arm, which is not only simple in structure but also capable of achieving stable transmission in a circular motion.

In order to achieve the above objective, the present invention provides a rickshaw pedaling crank device, which includes a crank mechanism, a plurality of balls and a force booster arm. The crank mechanism includes a crank and a shaft end arranged at one end of the crank The gear and a pedal end gear arranged at the other end of the crank. The crank is provided with a ball-receiving channel communicating with the shaft end gear and the pedal end gear; each of the ball systems abuts and contacts each other, one of which Each of the balls is engaged with the shaft end gear for transmission, the other part of the balls is engaged with the pedal end gear for transmission, and the remaining balls are respectively accommodated in the ball-accommodating channel; the force increasing One end of the swing arm is connected to the pedal end gear.

The present invention also has the following effects. By virtue of the mutual abutment between the balls, no gap is generated whether it is a forward or reverse transmission, and the transmission efficiency and positioning accuracy are further improved. The arc-shaped design of the booster arm can avoid contact with the front wheel during turning. Utilizing the through connection of the socket grooves and the insert blocks, it can effectively prevent bad situations such as bending deformation or pulling apart of the force booster arm due to long-term operation. In the process of stepping on the pedal to make the crank make a circular motion, there is no problem of top and bottom dead center and poor transmission such as frustration.

The detailed description and technical content of the present invention are described as follows in conjunction with the drawings. However, the drawings are only provided for reference and explanation, and are not intended to limit the present invention.

Please refer to Figures 1 to 5, the present invention provides a rickshaw pedaling crank device that can increase the force, this embodiment is described with a bicycle 8 on the side of the sprocket, this bicycle 8 has a frame 81, A middle bearing socket 87 is installed below the center column of the frame 81, and a rotating shaft 83 is penetrated in the center of the middle bearing socket 87. In addition, the bicycle 8 also includes a pair of pedals 84, a sprocket 85, and an embedded ring 86. Among other necessary devices, the stepped crank device of the present invention mainly includes a crank mechanism 10, a plurality of balls 20, and a force booster arm 30.

The crank mechanism 10 mainly includes a crank 11, a shaft end gear 14 and a pedal end gear 15. The crank 11 of this embodiment mainly includes an outer shell 12 and an inner shell 13, with a circle extending at one end of the outer shell 12. The other end of the cylindrical column 121 is provided with a first connecting hole 122, and a first groove 123 is provided on the outer periphery of the cylindrical column 121 and the first connecting hole 122 and the inner edge of the side of the outer casing 12; In addition, a plurality of studs 124 evenly distributed are provided on the inner surface of the outer casing 12; further, a plurality of fitting grooves 125 are formed in the cylindrical column 121.

The shape of the inner housing 13 corresponds to the shape of the outer housing 12. A second hole 131 is provided at one end of the inner housing 13, and a third hole 132 is provided at the other end of the inner housing 13. The contact hole 132 can be a through hole or a blind hole, which is arranged corresponding to the aforementioned first contact hole 122, and is located in the outer periphery of the second contact hole 131 and the third contact hole 132 and the side of the inner housing 13 The rim is provided with a second groove 133 that communicates with each other. The second groove 133 and the aforementioned first groove 123 are correspondingly arranged and combined to form a bead-containing channel A; in addition, the inner surface of the inner shell 13 is provided with a uniform distribution The plurality of perforations 134 are respectively corresponding to the aforementioned studs 124 for a screw element 135 to pass through and be locked.

The shaft end gear 14 is a static gear (that is, fixed and non-rotating), which is sleeved on the cylindrical column 121 and then passed through the second connecting hole 131, so as to be supported between the cylindrical column 121 and the inner housing 13, and The shaft end gear 14 is formed with a plurality of ring-shaped ball accommodating grooves 141 at a position corresponding to the aforementioned ball accommodating channel A, and a plurality of inserting strips 142 are provided at the end of the shaft end gear 14 away from each ball accommodating groove 141.

The pedal end gear 15 is a movable gear (that is, driven by each ball to generate rotation), and its front and rear ends are respectively straddling the first hole 122 and the third hole 132, thereby supporting the outer casing 12 and the inner side Between the shells 13, a ring-shaped plural ball receiving groove 151 is formed at the position of the pedal end gear 15 corresponding to the aforementioned ball receiving channel A; in addition, a boss 152 extends at the front end of the pedal end gear 15 on the end surface of the boss 152 A first positioning hole 153 and a second positioning hole 154 are provided, and the horizontal axis of the first positioning hole 153 and the horizontal axis of the second positioning hole 154 coincide. The ratio of the number of ball pockets 141 of the shaft end gear 14 to the number of ball pockets 151 of the pedal end gear 15 is 1:1.

The balls 20 are in close contact with each other. One part of the balls 20 is accommodated in the ball accommodating grooves 141 of the shaft end gear 14 to engage and drive through the rotation of the crank 11; The balls 20 are accommodated in the ball accommodating grooves 151 of the pedal-end gear 15, so as to engage the pedal-end gear 15 for rotation transmission through the mutual displacement of the balls 20; the remaining balls 20 are respectively accommodated in the ball-accommodating channels 141 in. The first groove 123 in this embodiment surrounds the outer periphery of the cylindrical column 121 and the first connection hole 122, and the second groove 133 surrounds the outer periphery of the second connection hole 131 and the third connection hole 132, Therefore, the balls 20 are arranged around the outer periphery of the shaft end gear 14 and the pedal end gear 15.

The booster arm 30 of this embodiment is a straight-shaped spiral arm. One end of the booster arm 30 is provided with a first through hole 31 corresponding to the aforementioned first positioning hole 153 and a first through hole 31 corresponding to the aforementioned second positioning hole 154. A second through hole 32 for a locking element 33 to pass through the first through hole 31 and the second through hole 32 respectively, and to be locked in the first positioning hole 153 and the second positioning hole 154; One end of the through hole 31 and the second through hole 32 is provided with a screw hole 34 for locking the pedal 84.

The booster pedaling crank device of the present invention also includes a fixed ring 40 which is sleeved on one end of the shaft end gear 14 and fixed to the aforementioned middle bearing socket 87. The fixed ring 40 is adjacent to the shaft end gear 14 One end is provided with a plurality of inserting slots 41 for inserting the aforementioned inserting strips 142, and another stopper 42 is provided outside the fixing ring 40 at one end away from the inserting slot 41, and this stopper 42 is used to insert the aforementioned inserting ring In a groove 861 of 86, the shaft end gear 14 and the fixing ring 40 are fixed by the fixing ring 86 without rotating.

Please refer to Figures 6 to 8, when assembling, the fixing ring 40 is sleeved on one end of the shaft end gear 14, and the inserting strips 142 and the inserting slots 41 are mutually fitted and fastened, and then the crank mechanism The cylindrical column 121 of 10 is sleeved corresponding to the rotating shaft 83, and the fitting strips 831 and the fitting grooves 125 are mutually fitted and fastened, and the stopper 42 is inserted into a fitting groove 861 of the fixing ring 86. The fixed ring 40 and the shaft end gear 14 are restricted by the retaining ring 86 and do not rotate. Then, a bolt 16 is inserted into the cylindrical column 121 and screwed on the rotating shaft 83, so that the rotating shaft 83 can be driven to rotate by the rotation of the crank 11.

Since a force arm d from the shaft center of the shaft end gear 14 to the center of the pedal 84 is greater than the length of the crank 11, according to the moment principle (M=F*d, F: force, d: force arm), therefore In the case of the same applied force, an increase in the length of the force arm will increase the moment (Moment).

By applying force to the pedal 84 during operation, the crank mechanism 10 drives the shaft 83 and the sprocket 85 to rotate with the crank 11 through the cylindrical column 121. When the booster arm 30 rotates downward from the apex position, through each ball 20. Under the action of each ball receiving groove 141, each ball receiving groove 151 and the ball receiving channel A, the pedal end gear 15 will be driven to rotate, and the booster arm 30 will be maintained at a constant angle or with the ground. A horizontal state, this embodiment is in a horizontal state, and the circular diameter formed by the center point of the pedal 84 is equal to the circular diameter formed by the center point of the pedal end gear 15 and the motion path of the middle bearing seat 87, but the two The center of the diameter is an eccentric shape. In addition, the moving direction of the booster arm 30 is opposite to the moving direction of the crank 11.

Please refer to FIG. 9, the crank mechanism of the present invention can be the same as the foregoing embodiment, but can also be in the form of this embodiment. The crank 11A of the crank mechanism 10A includes an outer casing 12 and an inner casing 13. The middle area of the outer casing 12 is provided with a first groove 123A, and the middle area of the inner casing 13 is provided with a first groove 133A. The first groove 123A and the first groove 133A form a bead receiving channel A, wherein The two ends of the first groove 123A and the second groove 133A are respectively communicated with the inner periphery of the shaft end gear 14 and the pedal end gear 15; in this way, the number of balls 20 used can be greatly reduced, thereby saving material costs .

Please refer to Figures 10 and 11, where the booster arm 30A of this embodiment is an arc-shaped spiral arm, one end of which is connected to the end surface of the aforementioned pedal end gear 15, and the booster arm 30A is provided with a through Hole 35, and at the end far away from the through hole 35 is provided with an insert block 36 and a socket groove 37; the pedal crank device of the present invention further includes a pedal link 50, one end of the pedal link 50 is connected to the increase The force swing arm 30A is formed between the crank 11 and the booster swing arm 30A. The pedal link 50 has a pedal receiving column 51, and at the end far away from the pedal receiving column 51, a set connecting groove 52 and an insert block 53 are provided. The pedal receiving post 51 penetrates the aforementioned through hole 35 for a foot pedal 84 to connect, and the socket groove 52 and the insert block 53 respectively correspond to the insert block 36 and the socket groove 37 of the booster arm 30 for coupling.

To sum up, the power-increasing pedaling crank device of the rickshaw of the present invention can indeed achieve the intended purpose of use, while solving the lack of conventional knowledge, and because of its novelty and progress, it fully meets the requirements of an invention patent application. If you file an application under the Patent Law, please check carefully and grant the patent for this case to protect the rights of the inventor.

10.10A: Crank mechanism

11, 11A: crank

12: Outer shell

121: Cylindrical column

122: first jack

123, 123A: first groove

124: Stud

125: Fitting groove

13: inner shell

131: second jack

132: third jack

133, 133A: second groove

134: Piercing

135: Screw components

14: Shaft end gear

141: Ball pocket

142: Embedded Insert

15: Pedal end gear

151: Ball pocket

152: Boss

153: The first positioning hole

154: second positioning hole

16: Bolt

20: Ball

30, 30A: booster arm

31: first through hole

32: second through hole

33: locking element

34: screw hole

35: Through hole

36: insert block

37: socket slot

40: fixed ring

41: Embedded slot

42: stop

50: Pedal linkage

51: Pedal bearing column

52: socket slot

53: insert block

A: Pearl channel

d: force arm

8: Bicycle

81: Frame

83: shaft

831: Mosaic

84: Pedal

85: sprocket

86: Embedded ring

861: Socket

87: Middle bearing socket

Fig. 1 is a combined diagram of the application of the pedal crank device of the present invention to a bicycle.

Figure 2 is a combined diagram of the pedal crank device of the present invention.

Figure 3 is an exploded view of the crank mechanism and balls of the present invention.

Figure 4 is an exploded view of the crank mechanism and the booster arm of the present invention.

Figure 5 is a cross-sectional view of the crank and the balls of the present invention.

Figure 6 is a cross-sectional view of the crank mechanism of the present invention combined with a bicycle.

Figure 7 is a schematic diagram of the continuous operation of the stepped crank device of the present invention.

Fig. 8 is a diagram of the use state of the stepped crank device of the present invention.

Figure 9 is a diagram of another embodiment of the crank mechanism of the present invention in use.

Figure 10 is an exploded view of another embodiment of the force booster arm of the present invention.

Figure 11 is a combination diagram of another embodiment of the booster arm of the present invention combined with the crank mechanism.

10: Crank mechanism

11: crank

12: Outer shell

121: Cylindrical column

122: first jack

123: The first groove

124: Stud

125: Fitting groove

13: inner shell

131: second jack

132: third jack

133: The second groove

134: Piercing

135: Screw components

14: Shaft end gear

141: Ball pocket

142: Embedded Insert

15: Pedal end gear

151: Ball pocket

152: Boss

153: The first positioning hole

154: second positioning hole

20: Ball

Claims (18)

A rickshaw can increase pedaling crank device, including: A crank mechanism includes a crank, a shaft end gear disposed at one end of the crank, and a pedal end gear disposed at the other end of the crank. The crank is provided with a gear communicating with the shaft end gear and the pedal end gear. Rongzhu channel; A plurality of balls, each of the ball trains is in contact with each other, one part of each of the ball trains is engaged with the shaft end gear for transmission, the other part of each of the ball trains is engaged with the pedal end gear for transmission, and the rest are each The balls are respectively accommodated in the ball-containing channels; and A booster arm, one end is connected to the pedal end gear. The stepped crank device of a rickshaw according to claim 1, wherein the shaft end gear is a static gear, and the pedal end gear is a movable gear. The stepped crank device of a rickshaw according to claim 2, wherein the crank is rotated through the mutual pushing between the balls to drive the pedal end gear to rotate, and the force-increasing arm and The ground maintains a constant angle or a level state. The stepped crank device for a rickshaw according to claim 1, wherein the shaft end gear has a plurality of ball pockets, the pedal end gear also has a plurality of ball pockets, and the number of each ball pocket of the shaft end gear The ratio of the number of the ball pockets to the pedal end gear is 1:1. The stepped crank device for a rickshaw according to claim 1, further comprising a fixed ring, the rickshaw has a middle bearing socket, and the fixed ring is sleeved on one end of the shaft end gear and fixed to the Middle bearing socket. The rickshaw pedaling crank device of claim 5, wherein the shaft end gear is provided with a plurality of embedded inserts, and the fixing ring is provided with a plug for each of the embedded inserts at one end adjacent to the shaft end gear Plural embedded slots. The pedaling crank device for a rickshaw according to claim 6, wherein the fixing ring is provided with a stopper at an end away from each of the inserting slots, the rickshaw has an inserting ring, and the inserting ring has an inserting Groove, the stopper is used to be embedded in the embedding groove. The stepped crank device for a rickshaw according to claim 1, wherein the crank includes an outer shell and an inner shell connected to the outer shell. The rickshaw pedaling crank device of claim 8, wherein one end of the outer shell extends with a cylindrical column, one end of the inner shell is provided with a second hole, and the shaft end gear is sleeved After the cylindrical column is passed through the second connecting hole. According to claim 9 of the rickshaw pedaling crank device, the other end of the outer casing is provided with a first connection hole, the other end of the inner casing is provided with a third connection hole, and the pedal end gear The front and rear ends are respectively spanned between the first contact hole and the third contact hole. The booster pedaling crank device of a rickshaw according to claim 10, wherein a first groove communicating with each other is provided on the outer periphery of the cylindrical column and the first connecting hole and the side inner edge of the outer shell , The outer periphery of the second connection hole and the third connection hole and the side inner edge of the inner housing are provided with a second groove communicating with each other, and the second groove and the first groove are arranged correspondingly and Together, they form the channel for holding beads. The stepped crank device for a rickshaw according to claim 8, wherein a first groove is provided in the middle area of the outer shell, and a second groove is provided in the middle area of the inner shell, the first The concave groove and the second concave groove jointly constitute the bead receiving channel, and the two ends of the first concave groove and the second concave groove are respectively communicated with the inner peripheral edges of the shaft end gear and the pedal end gear. The stepped crank device for a rickshaw according to claim 1, wherein the pedal end gear extends with a boss, and the boss end is provided with a first positioning hole and a second positioning hole, the first positioning hole The horizontal axis coincides with the horizontal axis of the second positioning hole. The stepped crank device for a rickshaw according to claim 13, wherein the force-increasing arm is a straight arm, and one end of the force-increasing arm is provided with a first positioning hole corresponding to the first positioning hole. The through hole and a second through hole corresponding to the second positioning hole are used for a locking element to penetrate the first through hole and the second through hole respectively, and are locked in the first positioning hole and the second positioning hole. In the hole. The stepped crank device for a rickshaw according to claim 14, wherein the force-increasing arm is provided with a screw hole for a pedal to be locked at an end away from the first through hole. The stepped crank device for a rickshaw according to claim 1, further comprising a pedal link, one end of the pedal link is connected to the other end of the booster arm and formed between the crank and the booster Between the arms. The booster pedaling crank device of the rickshaw according to claim 16, wherein the booster swing arm is an arc-shaped swing arm, the booster swing arm is provided with a through hole, the pedal connecting rod is provided with a pedal receiving post, the The pedal receiving column is provided with the through hole for connection with a pedal. The booster pedaling crank device of a rickshaw according to claim 17, wherein the booster arm is provided with an insert block and a socket groove at one end far away from the through hole, and the pedal connecting rod is located far away from the pedal receiving column One end is provided with a socket groove and an insert block, and each socket groove corresponds to each of the socket blocks to be combined.

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