阅读说明：本技术 一种自行车 (Bicycle with a wheel ) 是由 魏长同 于 2020-06-13 设计创作，主要内容包括：本发明公开了一种自行车,该自行车驱动机构包括轴套、主动轴、第一齿轮、第二齿轮、中间齿轮、从动轴、脚蹬；无论是正向蹬脚蹬还是反向蹬脚蹬,该自行车都是向前行驶。正反向交替蹬脚蹬,人体姿势、骨盆倾斜、肌肉关节运动方向循环变化,有利于劳损部位的康复,加强身体各部位的血液循环,缓解疲劳疼痛感。本发明既能代步又能健身,使用本发明对驼背矫正、腰腿痛治疗、减肥效果显著。(The invention discloses a bicycle, wherein a bicycle driving mechanism comprises a shaft sleeve, a driving shaft, a first gear, a second gear, an intermediate gear, a driven shaft and pedals; the bicycle is driven forward by pedaling in either forward or reverse direction. The pedals are alternately pedaled in the forward direction and the reverse direction, so that the posture, the pelvic inclination and the movement direction of muscle joints of a human body are circularly changed, the rehabilitation of strain parts is facilitated, the blood circulation of all parts of the body is enhanced, and the fatigue and pain feeling is relieved. The invention can not only replace walking, but also build body, and has remarkable effects of correcting humpback, treating lumbocrural pain and losing weight.)

1. The utility model provides a bicycle, includes the frame, sets up front fork, the handlebar of setting in the front fork upper end at the frame front end, sets up front wheel in the front fork, sets up the back fork at the frame rear end, sets up the rear wheel in the back fork, sets up little sprocket on the rear wheel, sets up chain on little sprocket, sets up the saddle in frame middle part top, characterized by: the bicycle also comprises a driving mechanism arranged below the middle part of the frame, wherein the driving mechanism comprises a shaft sleeve, a driving shaft, a first gear, a second gear, an intermediate gear, a driven shaft and pedals; the axle sleeve is arranged below the middle part of the frame, the axle sleeve is a circular tube with openings at two ends, a first hollow part and a second hollow part are symmetrically arranged on the axle sleeve body, a first cover cap is arranged on the first hollow part, a second cover cap is arranged on the second hollow part, an axial positioning groove is arranged on the inner side surface of the axle sleeve, and a first fixing hole, a second fixing hole and a third fixing hole for fixing a bearing are arranged on the axle sleeve; the driving shaft is arranged on the axis of the shaft sleeve and extends out of two ends of the shaft sleeve, one end of the driving shaft is connected with the shaft sleeve through a first bearing, a first convex block is arranged on the outer peripheral surface of the first bearing and matched with a positioning groove on the shaft sleeve, a first screw hole is arranged on the outer peripheral surface of the first bearing and matched with a first fixing hole on the shaft sleeve, and the first bearing is fixed in the shaft sleeve through the first convex block, the first screw hole and a screw, so that the driving shaft can only rotate in the circumferential direction and cannot move axially in the shaft sleeve; the first gear is annular, a first inner ratchet tooth is arranged on the inner circumferential surface of the annular, a conical part is arranged on the outer circumferential surface of the annular, a first bevel tooth is arranged on the conical part, a sealing plate is arranged at one end of an annular opening, a round hole matched with the driving shaft is arranged on the sealing plate, and the first gear is fixed on the driving shaft through the round hole on the sealing plate and is close to the first bearing; the second gear is annular, a second inner ratchet wheel tooth is arranged on the inner circumferential surface of the annular, a conical part is arranged on the outer circumferential surface of the annular, a second conical tooth is arranged on the conical part, a second bearing is arranged on the outer circumferential surface of the second gear, a second convex block is arranged on the outer circumferential surface of the second bearing, the second convex block is matched with the positioning groove in the shaft sleeve, a second screw hole is arranged on the outer circumferential surface of the second bearing, the second screw hole is matched with a second fixing hole in the shaft sleeve, and the second bearing is fixed in the shaft sleeve through the second convex block, the second screw hole and a screw, so that the second gear and the first gear are coaxially opposite at; the intermediate gear comprises a third gear and a fourth gear, the third gear and the fourth gear are identical bevel gears, the third gear and the fourth gear are oppositely arranged between the first gear and the second gear, the third gear and the fourth gear are respectively meshed with the first bevel teeth and the second bevel teeth, the third gear is rotatably arranged on the first cap through a first rotating shaft, the fourth gear is rotatably arranged on the second cap through a second rotating shaft, and the first cap and the second cap are fixed on the shaft sleeve through screws; the driven shaft is a circular tube with openings at two ends, the driven shaft is sleeved on the driving shaft in a penetrating way, one end of the driven shaft extends out of the shaft sleeve, the driven shaft and the driving shaft can rotate relatively, a first groove, a second groove, a third groove and a fourth groove are arranged on the shaft body of the driven shaft, the first groove and the third groove are symmetrical and correspond to the first gear, the second groove and the fourth groove are symmetrical and correspond to the second gear, an elastic pawl is respectively arranged in the first groove and the third groove and is matched with the first inner ratchet tooth, an elastic pawl is respectively arranged in the second groove and the fourth groove and is matched with the second inner ratchet tooth, a third bearing is arranged on the outer peripheral surface of the driven shaft, a third convex block is arranged on the outer peripheral surface of the third bearing, the third convex block is matched with a positioning groove on the shaft sleeve, a third screw hole is arranged on the outer peripheral surface of the third bearing, the third screw hole, the third bearing is fixed in the shaft sleeve through a third bump, a third screw hole and a screw, so that the driven shaft can only rotate in the circumferential direction in the shaft sleeve and cannot move axially, a large chain wheel is fixedly arranged at the end point of the driven shaft extending out of the shaft sleeve, and the large chain wheel is in transmission connection with the small chain wheel through a chain; the pedal includes first pedal and second pedal, and first pedal and second pedal are fixed respectively at the driving shaft both ends.

2. The bicycle of claim 1, wherein: the outer diameters of the first bearing, the first bearing and the first bearing are the same and are equal to the inner diameter of the shaft sleeve.

3. The bicycle of claim 1, wherein: the first fixing hole, the second fixing hole and the third fixing hole are at least two and are uniformly distributed.

4. The bicycle of claim 1, wherein: the resilient pawl includes a pawl and a resilient member acting on the pawl.

Technical Field

The invention belongs to the technical field of rickshaws, and particularly relates to a bicycle.

Technical Field

Bicycles, also known as bicycles or bicycles, are typically two-wheeled small land vehicles. After a person rides a bicycle, the person steps on the pedal as power, the bicycle is a green and environment-friendly vehicle, and more people take the bicycle as fitness equipment to ride, exercise and travel.

The existing bicycle drives the bicycle to move forwards and backwards in riding, the bicycle is not driven by idling of a chain wheel and a chain, the bicycle is driven to move forwards for a long time, legs and feet always move towards one direction, the neck, the waist, the perineum and the legs of a user are easily damaged, the user feels fatigue and pain, the riding distance is short, and the exercise effect is not ideal.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides a bicycle.

The technical scheme adopted by the invention is as follows: the utility model provides a bicycle, includes the frame, sets up front fork, the handlebar of setting in the front fork upper end at the frame front end, sets up front wheel in the front fork, sets up the back fork at the frame rear end, sets up the rear wheel in the back fork, sets up little sprocket on the rear wheel, sets up chain on little sprocket, sets up the saddle in frame middle part top, characterized by: the bicycle also comprises a driving mechanism arranged below the middle part of the frame, wherein the driving mechanism comprises a shaft sleeve, a driving shaft, a first gear, a second gear, an intermediate gear, a driven shaft and pedals; the axle sleeve is arranged below the middle part of the frame, the axle sleeve is a circular tube with openings at two ends, a first hollow part and a second hollow part are symmetrically arranged on the axle sleeve body, a first cover cap is arranged on the first hollow part, a second cover cap is arranged on the second hollow part, an axial positioning groove is arranged on the inner side surface of the axle sleeve, and a first fixing hole, a second fixing hole and a third fixing hole for fixing a bearing are arranged on the axle sleeve; the driving shaft is arranged on the axis of the shaft sleeve and extends out of two ends of the shaft sleeve, one end of the driving shaft is connected with the shaft sleeve through a first bearing, a first convex block is arranged on the outer peripheral surface of the first bearing and matched with a positioning groove on the shaft sleeve, a first screw hole is arranged on the outer peripheral surface of the first bearing and matched with a first fixing hole on the shaft sleeve, and the first bearing is fixed in the shaft sleeve through the first convex block, the first screw hole and a screw, so that the driving shaft can only rotate in the circumferential direction and cannot move axially in the shaft sleeve; the first gear is annular, a first inner ratchet tooth is arranged on the inner circumferential surface of the annular, a conical part is arranged on the outer circumferential surface of the annular, a first bevel tooth is arranged on the conical part, a sealing plate is arranged at one end of an annular opening, a round hole matched with the driving shaft is arranged on the sealing plate, and the first gear is fixed on the driving shaft through the round hole on the sealing plate and is close to the first bearing; the second gear is annular, a second inner ratchet wheel tooth is arranged on the inner circumferential surface of the annular, a conical part is arranged on the outer circumferential surface of the annular, a second conical tooth is arranged on the conical part, a second bearing is arranged on the outer circumferential surface of the second gear, a second convex block is arranged on the outer circumferential surface of the second bearing, the second convex block is matched with the positioning groove in the shaft sleeve, a second screw hole is arranged on the outer circumferential surface of the second bearing, the second screw hole is matched with a second fixing hole in the shaft sleeve, and the second bearing is fixed in the shaft sleeve through the second convex block, the second screw hole and a screw, so that the second gear and the first gear are coaxially opposite at; the intermediate gear comprises a third gear and a fourth gear, the third gear and the fourth gear are identical bevel gears, the third gear and the fourth gear are oppositely arranged between the first gear and the second gear, the third gear and the fourth gear are respectively meshed with the first bevel teeth and the second bevel teeth, the third gear is rotatably arranged on the first cap through a first rotating shaft, the fourth gear is rotatably arranged on the second cap through a second rotating shaft, and the first cap and the second cap are fixed on the shaft sleeve through screws; the driven shaft is a circular tube with openings at two ends, the driven shaft is sleeved on the driving shaft in a penetrating way, one end of the driven shaft extends out of the shaft sleeve, the driven shaft and the driving shaft can rotate relatively, a first groove, a second groove, a third groove and a fourth groove are arranged on the shaft body of the driven shaft, the first groove and the third groove are symmetrical and correspond to the first gear, the second groove and the fourth groove are symmetrical and correspond to the second gear, an elastic pawl is respectively arranged in the first groove and the third groove and is matched with the first inner ratchet tooth, an elastic pawl is respectively arranged in the second groove and the fourth groove and is matched with the second inner ratchet tooth, a third bearing is arranged on the outer peripheral surface of the driven shaft, a third convex block is arranged on the outer peripheral surface of the third bearing, the third convex block is matched with a positioning groove on the shaft sleeve, a third screw hole is arranged on the outer peripheral surface of the third bearing, the third screw hole, the third bearing is fixed in the shaft sleeve through a third bump, a third screw hole and a screw, so that the driven shaft can only rotate in the circumferential direction in the shaft sleeve and cannot move axially, a large chain wheel is fixedly arranged at the end point of the driven shaft extending out of the shaft sleeve, and the large chain wheel is in transmission connection with the small chain wheel through a chain; the pedal includes first pedal and second pedal, and first pedal and second pedal are fixed respectively at the driving shaft both ends.

Further, the outer diameters of the first bearing, the first bearing and the first bearing are the same and are equal to the inner diameter of the shaft sleeve.

Furthermore, the first fixing hole, the second fixing hole and the third fixing hole are at least two and are uniformly distributed.

Further, the elastic pawl includes a pawl and an elastic member acting on the pawl.

The working process of the invention is as follows: when the pedals are pedaled forwards (forwards) forcibly, the pedals drive the driving shaft to rotate forwards, the driving shaft drives the first gear to rotate forwards, the first gear drives the second gear to rotate reversely through the intermediate gear, at the moment, the elastic pawl is meshed with a first inner ratchet tooth of the first gear and is not meshed with a second inner ratchet tooth of the second gear, the first gear drives the driven gear to rotate forwards through the elastic pawl, the driven gear drives the large chain wheel to rotate forwards, the large chain wheel drives the small chain wheel to rotate forwards through the chain, the small chain wheel drives the rear wheel to rotate forwards, and the rear wheel drives the whole bicycle to move forwards; when the pedal is pedaled in a reverse direction (backward direction) by force, the pedal drives the driving shaft to rotate in the reverse direction, the driving shaft drives the first gear to rotate in the reverse direction, the first gear drives the second gear to rotate in the forward direction through the intermediate gear, at the moment, the elastic pawl is meshed with the second inner ratchet teeth of the second gear and is not meshed with the first inner ratchet teeth of the first gear, the second gear drives the driven gear to rotate in the forward direction through the elastic pawl, the driven gear drives the large chain wheel to rotate in the forward direction, the large chain wheel drives the small chain wheel to rotate in the forward direction through the chain, the small chain wheel drives the rear wheel to rotate in the forward direction, and the rear wheel drives the; that is, the bicycle travels forward regardless of whether the pedal is pedaled forward (forward) or backward (backward).

The invention has the beneficial effects that: the bicycle travels forward regardless of whether the pedal is pedaled forward or backward. When the pedal is positively pedaled by force, the gravity center of the human body is in front, the cervical vertebra, the lumbar vertebra, the psoas muscle and the ankle knee joint are all in a tensioning state, and the movement directions of the muscle and the joint are forward; when the pedal is pedaled in reverse direction with force, the gravity center of the human body is behind, the cervical vertebra, the lumbar vertebra and the psoas muscle are in a relaxed state, and the movement directions of the muscle and the joint are backward. The pedals are pedaled in a forward direction or a reverse direction, and the pedals are pedaled in a single direction for a long time, so that the neck, the waist, the perineum and the legs of a person are easily damaged, and the person feels fatigue and pain; if pedaling and pedaling are alternately carried out in the forward and reverse directions, the human posture, the pelvic tilt and the movement direction of the muscle joint are circularly changed, so that the rehabilitation of the strain part is facilitated, the blood circulation of each part of the body is enhanced, and the fatigue and pain feeling is relieved. The invention can not only replace walking, but also build body, and has remarkable effects of correcting humpback, treating lumbocrural pain and losing weight.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an exploded view of the driving mechanism of the present invention.

Fig. 3 is a schematic diagram of the internal structure of the driving mechanism of the present invention.

FIG. 4 is a schematic view of the internal connection structure of the driving shaft, the first gear and the driven shaft.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

The utility model provides a bicycle, includes frame 1, set up front fork 2 at frame 1 front end, set up handlebar 3 in front fork 2 upper end, set up front wheel 4 in front fork 2, set up rear fork 5 at frame 1 rear end, set up rear wheel 6 in rear fork 5, set up little sprocket 7 on rear wheel 6, set up chain 8 on little sprocket 7, set up the saddle 9 in frame 1 middle part top, characterized by: the bicycle also comprises a driving mechanism 10 arranged below the middle part of the frame 1, wherein the driving mechanism 10 comprises a shaft sleeve 11, a driving shaft 12, a first gear 13, a second gear 14, an intermediate gear, a driven shaft 15 and pedals; the axle sleeve 11 is arranged below the middle part of the frame 1, the axle sleeve 11 is a circular tube with two open ends, a first hollow 16 and a second hollow 17 are symmetrically arranged on the tube body of the axle sleeve 11, a first cap 18 is arranged on the first hollow 16, a second cap 19 is arranged on the second hollow 17, an axial positioning groove 20 is arranged on the inner side surface of the axle sleeve 11, and a first fixing hole 21, a second fixing hole 22 and a third fixing hole 23 for fixing a bearing are arranged on the axle sleeve 11; the driving shaft 12 is arranged on the axis of the shaft sleeve 11 and extends out of two ends of the shaft sleeve 11, one end of the driving shaft 12 is connected with the shaft sleeve 11 through a first bearing 24, a first bump 25 is arranged on the peripheral surface of the first bearing 24, the first bump 25 is matched with a positioning groove 20 on the shaft sleeve 11, a first screw hole 26 is arranged on the peripheral surface of the first bearing 24, the first screw hole 26 is matched with a first fixing hole 21 on the shaft sleeve 11, and the first bearing 24 is fixed in the shaft sleeve 11 through the first bump 25, the first screw hole 26 and a screw 29, so that the driving shaft 12 can only rotate in the circumferential direction and cannot move axially in the shaft sleeve 11; the first gear 13 is annular, a first inner ratchet tooth 28 is arranged on the inner annular surface, a conical part is arranged on the outer annular surface, a first conical tooth 29 is arranged on the conical part, a sealing plate 30 is arranged at one end of an annular opening, a round hole 31 matched with the driving shaft 12 is arranged on the sealing plate 30, and the first gear 13 is fixed on the driving shaft 12 through the round hole 31 on the sealing plate 30 and is close to the first bearing 24; the second gear 14 is annular, a second inner ratchet tooth 32 is arranged on the inner circumferential surface of the annular, a conical part is arranged on the outer circumferential surface of the annular, a second conical tooth 33 is arranged on the conical part, a second bearing 34 is arranged on the outer circumferential surface of the second gear 14, a second convex block 35 is arranged on the outer circumferential surface of the second bearing 34, the second convex block 35 is matched with the positioning groove 20 on the shaft sleeve 11, a second screw hole 36 is arranged on the outer circumferential surface of the second bearing 34, the second screw hole 36 is matched with the second fixing hole 22 on the shaft sleeve 11, and the second bearing 34 is fixed in the shaft sleeve 11 through the second convex block 35, the second screw hole 36 and the screw 27, so that the second gear 14 and the first gear 13 are coaxially opposite at intervals; the intermediate gear comprises a third gear 37 and a fourth gear 38, the third gear 37 and the fourth gear 38 are identical bevel gears, the third gear 37 and the fourth gear 38 are oppositely arranged between the first gear 13 and the second gear 14, the third gear 37 and the fourth gear 38 are respectively meshed with the first bevel tooth 29 and the second bevel tooth 33, the third gear 37 is rotatably arranged on the first cap 18 through a first rotating shaft 39, the fourth gear 38 is rotatably arranged on the second cap 19 through a second rotating shaft 40, and the first cap 18 and the second cap 19 are fixed on the shaft sleeve 11 through screws 27; the driven shaft 15 is a circular tube with two open ends, the driven shaft 15 is sleeved on the driving shaft 12 and has one end extending out of the shaft sleeve 11, the driven shaft 15 and the driving shaft 12 can rotate relatively, the shaft body of the driven shaft 15 is provided with a first groove 41, a second groove 42, a third groove and a fourth groove, the first groove 41 and the third groove are symmetrical and correspond to the first gear 13, the second groove 42 and the fourth groove are symmetrical and correspond to the second gear 14, the first groove 41 and the third groove are respectively provided with an elastic pawl 43 and are matched with the first inner ratchet teeth 28, the second groove 42 and the fourth groove are respectively provided with an elastic pawl 43 and are matched with the second inner ratchet teeth 32, the outer peripheral surface of the driven shaft 15 is provided with a third bearing 44, the outer peripheral surface of the third bearing 44 is provided with a third lug 45, the third lug 45 is matched with the positioning groove 20 on the shaft sleeve 11, the outer peripheral surface of the third bearing 44 is provided with a third screw hole 46, the third screw hole 46 is matched with the third fixing hole 23 on the shaft sleeve 11, the third bearing 44 is fixed in the shaft sleeve 11 through the third bump 45, the third screw hole 46 and the screw 27, so that the driven shaft 15 can only circumferentially rotate in the shaft sleeve 11 and can not axially move, a large chain wheel 47 is fixedly arranged at the end point of the driven shaft 15 extending out of the shaft sleeve 11, and the large chain wheel 47 is in transmission connection with the small chain wheel 8 through the chain 8; the pedals include a first pedal 48 and a second pedal 49, and the first pedal 48 and the second pedal 49 are fixed to both ends of the drive shaft 12, respectively.

Further, the outer diameters of the first bearing 24, the first bearing 34 and the first bearing 44 are the same and equal to the inner diameter of the shaft sleeve 11.

Further, the number of the first fixing holes 21, the second fixing holes 22, and the third fixing holes 23 is at least two and are uniformly distributed.

Further, said resilient pawl 43 comprises a pawl 50 and a resilient member 51 acting on the pawl.