TWM549189U - Force-saving pedaling crank of rickshaw - Google Patents

Description

Rickshaw can save effort to step on the crank structure

This creation is related to a treading crank technique, especially a lean pedal structure for a rickshaw.

According to modern people, in order to improve the health of the body or to reduce the emission of harmful gases and carbon, Metropolis will make good use of part of the time, such as jogging, walking or riding a bicycle, among which the riding bicycle has short and medium Cheng's tourism effect makes the rider's body, mind and spirit get the best relief. Under the numerous bicycle lanes in various counties and cities, riding bicycles has become the most popular activity for all. One of the projects.

The crank of the conventional bicycle is a fixed length rod for connecting the pedal and the mandrel of the bicycle. During the operation of the bicycle, the pedal is stepped on by the user, and the pedal is rotated with the center shaft as a center of rotation. The length of the crank is a circular motion of the radius, and drives the driving device of the bicycle, such as a toothed disc, a chain, and the like, thereby advancing the bicycle.

Existing in the pedal structure of the bicycle, it is not possible to extend the crank and increase the length of the arm when the pedal is rotated to the position where the force is required, so that a more labor-saving effect cannot be achieved, which is the design of the existing telescopic crank. The circular motion that cannot be performed regularly and inertia is a pedaling structure that is laborious and easily causes fatigue to the user.

In view of the above, the inventors of the present invention have made great efforts to solve the above problems by focusing on the above-mentioned problems of the prior art, and have made great efforts to solve the above problems.

One of the aims of the present invention is to provide a labor-saving pedal-operated crank structure which utilizes an increase in the length of the arm to achieve a labor-saving effect, and the second crank can be pivotally oscillated relative to the first crank, thereby enabling the crank mechanism to Regular circular motion for smoothness and safety.

In order to achieve the above object, the present invention provides a labor-saving pedal-pressing structure of a rickshaw, comprising a timing dial, a crank mechanism and a transmission mechanism, the timing disc is provided with a guide groove; the crank mechanism includes a first crank, a second crank connecting the first crank and a third crank fixed to the second crank and juxtaposed to each other, the first crank includes a sleeve and a first gear sleeved on the sleeve, the shaft The sleeve is coupled to the timing plate, and the second crank is coupled to the first crank through a second gear; the transmission mechanism is disposed inside the first crank, the transmission mechanism includes a moving rod and a belt body, the belt body Between the first gear and the second gear, a braking portion and an embedding portion are respectively formed at two ends of the moving rod, and the braking portion corresponds to the second gear arrangement, and the embedding portion corresponds to the guiding groove Where the crank mechanism moves during the rotation, the embedding portion will move along the trajectory of the guide groove and drive the braking portion to operatively correspond to the second gear for braking or releasing, thereby allowing the second crank with Third crank relative to the first crank or stop for rotational pivot.

The creation also has the following effects. By the arrangement of the lifting mechanism, the first gear and the second gear can be alternately rotated during operation to ensure smooth operation. The accuracy of the transmission is ensured by the connection of the first gear and the second gear by means of a timing belt. The stepped groove provided with the step block and the third crank with the corresponding step block in the second crank is penetrated and fixed by the coupling member, thereby effectively preventing the third crank from being bent or pulled away due to long-term operation, etc. Bad situation.

The detailed description and technical content of the present invention are described below with reference to the drawings, but the drawings are only for reference and explanation, and are not intended to limit the creation.

Referring to FIG. 1 to FIG. 5, the present invention provides a labor-saving pedaling structure for a rickshaw. This embodiment is described by a sprocket side of a bicycle 8, which has a frame 81 and a frame 81. A rotating shaft 83 is disposed under the center pillar, and the bicycle 8 further includes a pair of foot pedals 84, a sprocket 85 and other necessary devices. The labor-saving pedaling structure of the present invention mainly includes a timing dial 10 and a crank mechanism 20 And a transmission mechanism 30.

The timing plate 10 is mounted on the position of the rotating shaft 83 through a fixing base 15, and the fixing base 15 is a hollow ring, and a flap 151 is formed at a position of the outer periphery thereof for locking the frame 81; The timing plate 10 of the present embodiment is a hollow disk body 11. A guide groove 12 is formed on one surface of the disk body 11. The guide groove 12 is an annular guide groove, which mainly includes a circumferentially arranged one. a first intermittent zone 121, a contraction zone 122, a second intermittent zone 123 and a stretch zone 124 (as shown in FIG. 5); and a plurality of studs 13 extending on the back of the disk body 11 for the screwing component The disk body 11 is fixed by the fixing seat 15; and the plurality of bumps 14 are provided on the inner wall surface of the disk body 11.

The crank mechanism 20 includes a first crank 21, a second crank 22 and a third crank 23. The two sides of the first crank 21 are respectively formed with a first end 211 and a distal end 212, and the first end 211 is sleeved in the foregoing The timing plate 10 is external; the second crank 22 is coupled to the end 212 of the first crank 21, the third crank 23 is fixed to the end of the second crank 22 away from the first crank 21, and the third crank 23 and the second crank 22 are mutually In parallel arrangement, the end of the third crank 23 away from the second crank 22 is connected to the aforementioned footrest 84.

Further, the first crank 21 includes an outer arm 213 and an inner arm 214 corresponding to the outer arm 213. The outer arm 213 extends at a position corresponding to the first end 211 to extend a plurality of arms 215 for the screw members to pass through the branches. The arm 215 is fixed to the aforementioned sprocket 85. In addition, a sleeve 216 and a first gear 217 sleeved on the sleeve 216 are disposed in the first end 211 of the first crank 21, wherein the sleeve 216 is connected to the timing plate 10. Further, a second gear 218 is disposed in the end 212 of the first crank 21, and the second crank 22 is coupled to the first crank 21 through the second gear 218. The pitch diameter of the second gear 218 is smaller than that of the first gear 217. The diameter of the circle, and the gear ratio of the first gear 217 and the second gear 218 is an integer, such as: 2:1, 3:1, 4:1, and the like.

The transmission mechanism 30 is disposed inside the first crank 21, and the transmission mechanism 30 includes a moving rod 31 and a belt body 32. A braking portion 311 and an embedding portion 312 are respectively formed at two ends of the moving rod 31, and the moving rod 31 passes through the plurality of The sleeve 33 is supported between the outer arm 213 and the inner arm 214 of the first crank 21, and the moving rod 31 can linearly reciprocate relative to each sleeve 33. The braking portion 311 of the embodiment is a triangular insert, but The shape of the embedding portion 312 of the present embodiment is a pin, but is not limited to such a shape, which corresponds to the aforementioned timing. The guiding groove 12 of the disk 10 is embedded and coupled; and an abutting portion 313 is further disposed on one side of the embedded portion 312. The belt body 32 of the present embodiment is a timing belt, but is not limited to this form, and is sleeved between the first gear 217 and the second gear 218.

The effortless pedaling structure of the present invention further includes a lifting mechanism 40. The lifting mechanism 40 includes a sleeve 41, a compression spring 42 and a buckle 43. The sleeve 41 is sleeved on the outer circumference of the sleeve 216. The upper end of the cylinder 41 has a climbing portion 411. The climbing portion 411 of the present embodiment is a sloped surface that is disposed corresponding to the abutting portion 313. In addition, a plurality of axial grooves 412 are formed on the outer peripheral wall of the sleeve 41. The axial grooves 412 are respectively embedded and coupled with the respective bumps 14 of the timing plate 10, so that the sleeve 41 can be rotated. In the case, the lifting movement is performed with respect to the timing dial 10. Further, a plurality of bumps 413 are extended on the upper end surface of the sleeve 41, and the first gear 217 is provided with a plurality of card slots 219 toward the end surface of the sleeve 41. Each of the card slots 219 is inserted into and positioned by each of the bumps 413. A gear 217 does not produce a rotational motion. The buckle 43 is fastened to one end of the sleeve 41 away from the climbing portion 411. The compression spring 42 is sleeved on the outer circumference of the sleeve 216 and is elastically clamped between the buckle 43 and the timing dial 10 at the abutting portion. When the climbing portion 411 is not pushed against the 313, the sleeve 41 is separated from the first gear 217.

Referring to FIG. 6 to FIG. 8 , in use, the force is applied to each of the foot pedals 84 by the soles of the feet, and when the crank mechanism 20 rotates clockwise through the top dead center (at 12 o'clock position), The crank arm 21 and the second crank 22 are connected with a force applying arm larger than the conventional pedaling structure. The arm is only applied by a single crank, according to the torque principle (M=F*d, F: force, d: force arm) Therefore, under the same condition of the moment (Moment), the force exerted by the creation of the crank structure can be reduced, and the labor-saving effect can be obtained.

The first crank 21 has a top dead center, and the angle between the starting point of the first intermittent zone 121 and the top dead center is 0 to 10 degrees, wherein 5 degrees is preferred, and the guiding portion 312 is guided along the guiding portion 312. When the slot 12 enters the first intermittent zone 121, the moving rod 31 of the transmission mechanism 30 will linearly move toward the outside, and the second gear 218 is inserted into the braking portion 311, thereby causing the second gear 218 to be stationary. Each of the bumps 413 of the 41 is separated from the respective slots 219 of the first gear 217 (ie, the first gear 217 is free to rotate), and the first gear 217 as the first crank 21 continues to rotate in the clockwise direction. The meshing belt body 32 is rotated in the clockwise direction, and while the first gear 217 follows the first crank 21 in synchronism, the second crank 22 and the third crank 23 are in a stop relationship with the first crank 21.

Referring to FIG. 6, FIG. 9 and FIG. 10, then, when the insertion portion 312 enters the constricted region 122 along the guide groove 12, the moving rod 31 of the transmission mechanism 30 will linearly move toward the inner side and abut against The portion 313 is pushed against the climbing portion 411 of the sleeve 41. At this time, the respective protrusions 14 are engaged with the axial grooves 412, so that the sleeve 41 does not rotate but moves upward along the sleeve 216 in the sleeve. Each of the bumps 413 of the cylinder 41 and the respective slots 219 of the first gear 217 are engaged with each other, and the first gear 217 is in a stationary state (ie, is connected to the frame), and the first crank 21 is used at this time. Continuing to rotate in a clockwise direction will cause the second gear 218 and the belt body 32 to be pulled in a counterclockwise direction, and the second crank 22 and the third crank 23 will be driven relative to the first crank while the second gear 218 is rotated. 21 makes an upward rotational swing, and by using the upward swing of the second crank 22 when the first crank 21 is rotated to an appropriate position from the bottom dead center (6 o'clock position), the force can be effectively prevented. The length of the arm is increased to cause safety problems in use, and the crank mechanism 20 can be made smooth Do circular motion sexually.

Further, when the embedding portion 312 enters the second intermittent region 123 along the guide groove 12, the mutual relationship and the actuating relationship of the constituent elements are the same as the entry of the embedding portion 312 into the first intermittent region 121; similarly, in the embedding portion When the 312 enters the stretch zone 124 along the guide groove 12, the mutual relationship and actuation relationship of the constituent elements are the same as the entry of the insert portion 312 into the contraction zone 122.

Referring to FIG. 11 and FIG. 12, in addition to the integral molding of the second crank 22 and the third crank 23, a step block 221 may be formed at one end of the second crank 22 as in the present embodiment, and in the step block 221 The second crank 22 is respectively provided with a through hole 222. One end of the third crank 23 is formed with a stepped groove 231, and a through hole 232 is respectively formed in the stepped groove 231 and the third crank 23, and the step block 221 is engaged with the stepped groove 231. Consolidation is performed by piercing the perforations 222, 232 with a bonding member such as a rivet.

In summary, the rickshaw of this creation can save the effort to step on the crank structure, and it can achieve the intended purpose of use, and solve the lack of conventional knowledge. Because of its novelty and progress, it fully meets the requirements of new patent applications and converts patents. If the law is filed, please check and grant the patent in this case to protect the rights of the creator.

10‧‧‧hours

11‧‧‧ Disk body

12‧‧‧Guide

121‧‧‧First Intermittent Zone

122‧‧‧Contraction zone

123‧‧‧Second Interval Area

124‧‧‧ Stretching area

13‧‧‧ Stud

14‧‧‧Bumps

15‧‧‧ fixed seat

151‧‧‧Fold

20‧‧‧ crank mechanism

21‧‧‧First crank

211‧‧‧ head end

End of 212‧‧‧

213‧‧‧External arm

214‧‧‧ inner arm

215‧‧‧ Arm

216‧‧‧ bushings

217‧‧‧First gear

218‧‧‧second gear

219‧‧‧ card slot

22‧‧‧second crank

221‧‧‧step block

222‧‧‧Perforation

23‧‧‧ Third crank

231‧‧‧step trough

232‧‧‧Perforation

30‧‧‧Transmission mechanism

31‧‧‧ moving rod

311‧‧‧ Brake

312‧‧‧ embedded department

313‧‧‧Apartment

32‧‧‧Band body

33‧‧‧Set

40‧‧‧ Lifting mechanism

41‧‧‧Sleeve

411‧‧‧ climbing department

412‧‧‧ axial slot

413‧‧‧Bumps

42‧‧‧Compression spring

43‧‧‧ buckle

Θ‧‧‧ spaced angle

8‧‧‧Bicycle

81‧‧‧ frame

83‧‧‧ shaft

84‧‧‧ pedals

85‧‧‧Sprocket

Figure 1 is a combination of the creation of a bicycle structure that can save effort on the pedal structure.

Figure 2 is a combination of the creation of the crank structure connection sprocket.

Figure 3 is an exploded view of the structure of the crank that can save effort.

Figure 4 is an exploded view of some of the institutions in this creation.

Figure 5 is a cross-sectional view of the timing of the creation.

Figure 6 is a schematic diagram of the continuous operation of the crank mechanism of the present invention.

Figure 7 is a cross-sectional view showing the state of use of the embedded portion of the present invention in the first intermittent zone.

Figure 8 is a cross-sectional view showing the state of use of the embedding portion of the present invention in another viewing angle in the first intermittent zone.

Figure 9 is a cross-sectional view showing the state of use of the embedded portion of the present invention in the contraction zone.

Figure 10 is a cross-sectional view showing the state of use of the embedding portion of the present invention in another viewing angle in the contraction region.

Figure 11 is an exploded view of another embodiment of the second crank and the third crank of the present invention.

Figure 12 is a cross-sectional view showing another embodiment of the second crank and the third crank of the present invention.

21‧‧‧First crank

22‧‧‧second crank

23‧‧‧ Third crank

83‧‧‧ shaft

84‧‧‧ pedals

85‧‧‧Sprocket

Claims (18)

A rickshaw capable pedal-saving structure comprising: a timing disc having a guide groove; a crank mechanism including a first crank, a second crank connecting the first crank, and being fixed to the second crank and juxtaposed with each other a third crank is disposed, the first crank includes a sleeve and a first gear sleeved on the sleeve, the sleeve passes through the timing dial, and the second crank transmits through the second gear and the first a crank connection; and a transmission mechanism disposed inside the first crank, the transmission mechanism includes a moving rod and a belt body, the belt body is sleeved between the first gear and the second gear, and the movement is The two ends of the rod are respectively formed with a braking portion and an embedding portion, the braking portion corresponding to the second gear arrangement, the embedding portion corresponding to the guiding groove; wherein the locking portion will follow the rotation mechanism during the rotation The track of the guide groove is removed and the brake portion is operatively operatively braked or released corresponding to the second gear, so that the second crank and the third crank can be stopped or rotated relative to the first crank. . The rickshaw according to claim 1 is capable of stepping on the crank structure, and further comprising a lifting mechanism, the lifting mechanism comprising a sleeve sleeved on the sleeve, the sleeve having a climbing portion, and the embedded portion The abutment is provided on the side, and the abutment is operatively urged against the climbing portion to enable the sleeve to move relative to the sleeve. The rickshaw according to claim 2 is capable of stepping on the crank structure, wherein the timing dial is mounted on the rickshaw through a fixing seat, and a flap is formed on the periphery of the fixing seat for fixing the rickshaw on. The rickshaw according to claim 2 is capable of stepping on the crank structure, wherein the guide groove is an annular guide groove, and mainly includes a first intermittent zone, a contraction zone, a second intermittent zone and an extension arranged in a circumferential arrangement. Area. The rickshaw of claim 2 is capable of stepping on the crank structure, wherein the two sides of the first crank are respectively formed with a first end and an end, and the sleeve, the first gear and the timing dial are accommodated in the first In the end, the end is for the second crank connection and for the second gear. The rickshaw according to claim 5 is capable of stepping on the crank structure, wherein the third crank is fixed at an end of the second crank away from the first crank. The rickshaw according to claim 5 is capable of stepping on the crank structure, wherein the first crank includes an outer arm and an inner arm corresponding to the outer arm, and the plurality of arms extend at the head end corresponding to the outer end. The rickshaw has a sprocket, and each of the arms is fixed to the sprocket through a plurality of screwing elements. The rickshaw of claim 7 is capable of stepping on the crank structure, wherein the moving rod is supported between the outer arm and the inner arm through a plurality of sockets. The rickshaw according to claim 2 is capable of stepping on the crank structure, wherein the pitch diameter of the second gear is smaller than the pitch diameter of the first gear. The rickshaw of claim 2 is capable of stepping on the crank structure, wherein the lifting mechanism further comprises a compression spring and a buckle, the buckle being fastened at an end of the sleeve away from the climbing portion, the compression spring sleeve At the outer circumference of the sleeve and elastically clamped between the buckle and the timing dial. The rickshaw of claim 2 is capable of stepping on the crank structure, wherein the outer peripheral wall of the sleeve is provided with a plurality of axial grooves, and the timing plate is provided with a plurality of convex points, each of the axial grooves respectively corresponding to each The bumps are embedded and combined. The rickshaw of claim 2 is capable of stepping on the crank structure, wherein the end surface of the sleeve extends with a plurality of bumps, and the first gear is provided with a plurality of card slots toward the end surface of the sleeve, and the bumps are operable. The ground is corresponding to each of the card slots for embedded positioning. The rickshaw according to claim 2 is capable of stepping on the crank structure, wherein the second crank and the third crank are integrally formed. The rickshaw of claim 2 is capable of stepping on the crank structure, wherein one end of the second crank is formed with a step block, and a perforation is respectively formed in the step block and the second crank, and one end of the third crank is formed a stepped groove, and a perforation is respectively formed in the stepped groove and the third crank, the step block is engaged with the stepped groove, and is fixed by the plurality of coupling elements passing through the perforations. The rickshaw of claim 2 can be labor-saving to step on the crank structure, wherein the braking portion is a triangular insert. The rickshaw according to claim 2 is capable of stepping on the crank structure, wherein the embedded portion is a latch. The rickshaw according to claim 2 can be labor-saving to step on the crank structure, wherein the belt body is a time gauge belt. The rickshaw according to claim 2 is labor-saving to step on the crank structure, wherein the climbing portion is a slope.