CN223812672U

CN223812672U - Front double-wheel driving reciprocating pedal tricycle

Info

Publication number: CN223812672U
Application number: CN202520368955.6U
Authority: CN
Inventors: 于锡亭
Original assignee: Individual
Current assignee: Individual
Priority date: 2025-03-05
Filing date: 2025-03-05
Publication date: 2026-01-20
Anticipated expiration: 2035-03-05

Abstract

The utility model relates to a front double-wheel driving reciprocating pedal tricycle which comprises a frame (1), a left front wheel (2), a right front wheel (3), a rear wheel (4) and a saddle (5), wherein a steering shaft (11) is rotatably arranged at the front part of the frame (1), a steering handle (12) is transversely arranged at the upper end of the steering shaft, a transmission case (6) is arranged at the lower end part of the steering shaft, a left input shaft (61) and a left output shaft (62) are arranged at the left side of the transmission case, a right input shaft (63) and a right output shaft (64) are arranged at the right side of the transmission case, a left crank arm (8) is transversely arranged on the left input shaft, a right crank arm (9) is transversely arranged on the right input shaft, the left front wheel (2) is fixedly connected with the left output shaft of the transmission case (6), and the right front wheel (3) is fixedly connected with the right output shaft of the transmission case (6). The bicycle is ridden by adopting a front driving reciprocating pedal mode, so that the bicycle is more labor-saving to ride on the backrest, and the riding and steering are convenient. The bicycle has compact structure, labor saving when riding, safety, comfort, and good recreation and entertainment.

Description

Front double-wheel driving reciprocating pedal tricycle

Technical Field

The utility model relates to a bicycle, in particular to a front double-wheel driving reciprocating pedal tricycle.

Background

The common tricycle adopts chain transmission, and the structure is not compact enough. When the tricycle is ridden, the pedals need to be stepped on circumferentially, the effective working angle of the pedals is smaller than half a circle when the pedals rotate for one circle, the riding working angle is small, and the riding is not labor-saving. The existing tricycle has higher seat, is not safe and comfortable to ride, and has poor recreational and recreational properties.

Disclosure of Invention

The utility model aims to provide a front double-wheel driving reciprocating pedal tricycle which has compact structure, labor-saving riding, safety, comfort and good recreation and entertainment.

The technical scheme includes that the bicycle comprises a bicycle frame, a left front wheel, a right front wheel, a rear wheel and a saddle, wherein the rear wheel is rotatably arranged at the rear part of the bicycle frame, the saddle is arranged on the bicycle frame in front of the rear wheel, a steering shaft is rotatably arranged at the front part of the bicycle frame, a steering handle is transversely arranged at the upper end of the steering shaft, a transmission box fixedly connected with the steering shaft is arranged at the lower end of the steering shaft, a left input shaft and a left output shaft are arranged at the left side of the transmission box, a right input shaft and a right output shaft are arranged at the right side of the transmission box, a left crank arm with a pedal at the other end is transversely arranged on the left input shaft, a right crank arm with a pedal at the other end is transversely arranged on the right input shaft, and the left front wheel is fixedly connected with the left output shaft of the transmission box.

The utility model has the technical effects that the bicycle is ridden by adopting a front driving reciprocating pedal mode, the riding on the backrest is more labor-saving, and the riding and steering are convenient. The bicycle has compact structure, labor saving when riding, safety, comfort, and good recreation and entertainment. The tricycle has the advantages of low gravity center and good tricycle support stability, and can be parked at any time and ridden at any time. It can be used for riding and body building, and is worth widely popularizing and applying.

Drawings

FIG. 1 is a perspective view of an embodiment of the present utility model;

Fig. 2 is a perspective view of the transmission device of the present utility model.

Detailed Description

As shown in fig. 1, the bicycle comprises a bicycle frame 1, a left front wheel 2, a right front wheel 3, a rear wheel 4 and a bicycle seat 5, wherein the rear wheel 4 is rotatably arranged at the rear part of the bicycle frame 1, the bicycle seat 5 is arranged in front of the rear wheel 4 and is arranged on the bicycle frame 1, a steering shaft 11 is rotatably arranged at the front part of the bicycle frame 1, a steering handle 12 is transversely arranged at the upper end of the steering shaft 11, a transmission box 6 fixedly connected with the steering shaft 11 is arranged at the lower end of the steering shaft 11, a left input shaft 61 and a left output shaft 62 are arranged at the left side of the transmission box 6, a right input shaft 63 and a right output shaft 64 are arranged at the right side of the transmission box 6, a left crank arm 8 with a pedal 7 at the other end is transversely arranged on the left input shaft 61, a right crank arm 9 with the pedal 7 at the other end is transversely arranged on the right input shaft 63, the left front wheel 2 is fixedly connected with the left output shaft 62 of the transmission box 6, and the right front wheel 3 is fixedly connected with the right output shaft 64 of the transmission box 6.

The frame 1 is provided with a back rest 13 positioned at the rear part of the saddle 5.

A mud guard 10 is provided above and behind the left front wheel 2, the right front wheel 3 and the rear wheel 4.

As shown in fig. 2, the transmission case 6 includes a case 65, a left driving gear 66, a left duplex gear 67, a left driven gear 68, a right driving gear 69, a right duplex gear 70, a right driven gear 71, a left bevel gear 72, a right bevel gear 73 and an intermediate bevel gear 74 are disposed in the case 65, the left input shaft 61, the left output shaft 62, the right input shaft 63 and the right output shaft 64 are respectively rotatably mounted on the case 65, the left end of the left input shaft 61 extends to the outside of the case 65 and is connected with the left crank arm 8, the left driving gear 66 is mounted on the left input shaft 61 through a unidirectional transmission 75, the left end of the left output shaft 62 extends to the outside of the case 65 and is connected with the left front wheel 2, the left driven gear 68 is fixedly mounted at the right end of the left output shaft 62, the left duplex gear 67 is rotatably mounted on the case 65, the pinion gear 66 is meshed with the left driving gear 66, the large gear is meshed with the left driven gear 68, the right end of the right input shaft 63 extends to the outside of the case 65 and is connected with the right bevel arm 9, the right driving gear 69 is fixedly mounted on the right output shaft 70 through the right transmission 75 and is meshed with the right output shaft 71, the right output shaft 71 is rotatably mounted on the right bevel gear 71 and is meshed with the right output shaft 71, the right output shaft 71 is fixedly mounted on the right bevel gear 72, and is meshed with the right output shaft 71.

The left output shaft 62 and the right output shaft 64 are hollow shafts respectively, a mandrel 76 with the middle part fixed on the box 65 is arranged on the box 65, the left output shaft 62 and the right output shaft 64 are sleeved outside the mandrel 76 left and right respectively, the left end of the left output shaft 62 is fixedly connected with the left front wheel 2 and is in running fit with the left end of the mandrel 76 through a bearing, the right end of the left output shaft is in running fit with the mandrel 76 or the box 65 through a bearing, the right end of the right output shaft 64 is fixedly connected with the right front wheel 3 and is in running fit with the right end of the mandrel 76 through a bearing, and the left end of the right output shaft is in running fit with the mandrel 76 or the box 65 through a bearing.

The one-way transmission 75 is a one-way bearing with an inner race fixedly mounted on the left input shaft 61 or the right input shaft 63 and an outer race fixedly mounted on the left drive gear 66 or the right drive gear 69.

The unidirectional driver 75 is a ratchet-pawl driver with an inner ring fixedly mounted on the left input shaft 61 or the right input shaft 63, an outer ring fixedly mounted on the left driving gear 66 or the right driving gear 69, a ratchet of the ratchet-pawl driver is arranged on the inner ring, a pawl is arranged on the outer ring, a pawl spring is arranged between the pawl and the outer ring, or the ratchet is arranged on the outer ring, the pawl is arranged on the inner ring, and a pawl spring is arranged between the pawl and the inner ring.

The axes of the left double gear 67 and the right double gear 70 lie on a straight line.

The axes of the left and right input shafts 61 and 63 lie on a straight line,

The axes of the left output shaft 62 and the right output shaft 64 lie on a straight line.

The mud flaps 10 of the left and right front wheels 2 and 3 are respectively fixed to the left and right end portions of the axle 76, and the mud flaps 10 of the rear wheel 4 are mounted on the frame 1.

Working principle:

When the left foot of the rider pedals the left foot plate 7 forwards, the left crank arm 8 drives the left driving gear 66 to rotate forwards through the unidirectional driver 75, the left driving gear 66 drives the left duplex gear 67 to rotate backwards, and the left duplex gear 67 drives the left output shaft 62 and the left front wheel 2 to rotate forwards through the left driven gear 68. Simultaneously, the left bevel gear 72 on the left crank arm 8 drives the right bevel gear 73 and the right crank arm 9 to swing backwards through the intermediate bevel gear 74. Because the unidirectional driver 75 is arranged between the right driving gear 69 and the right crank arm 9, the right crank arm 9 does not drive the right driving gear 69 to rotate backwards. When the right foot of the rider pedals the right foot pedal 7 forwards, the right front wheel 3 is driven to rotate forwards, and the left crank arm 8 is driven to swing backwards.

The left foot and the right foot of the rider alternately and reciprocally pedal the left foot pedal 7 and the right foot pedal 7, so that the left front wheel 2 and the right front wheel 3 of the bicycle can be driven to continuously rotate forwards, and the aim of driving the bicycle to move forwards is fulfilled.

Claims

1. The front double-wheel driving reciprocating pedal tricycle is characterized in that a steering handle (12) is transversely arranged at the upper end of the steering shaft (11), a transmission box (6) fixedly connected with the steering shaft (11) is arranged at the lower end of the steering shaft (11), a left input shaft (61) and a left output shaft (62) are arranged on the left side of the transmission box (6), a right input shaft (63) and a right output shaft (64) are arranged on the right side of the transmission box (6), a left crank arm (8) with a foot pedal (7) at the other end is transversely arranged on the left input shaft (61), a right crank arm (9) with the foot pedal (7) at the other end is transversely arranged on the right input shaft (63), and the left front wheel (2) is fixedly connected with the left output shaft (62) of the transmission box (6), and the right output shaft (64) of the front wheel is fixedly connected with the transmission box (3).

2. Front two-wheel drive reciprocating pedal tricycle according to claim 1, characterised in that the frame (1) is provided with a back rest (13) at the rear of the saddle (5).

3. The front two-wheel drive reciprocating pedal tricycle according to claim 1, characterized in that the rear upper parts of the left front wheel (2), the right front wheel (3) and the rear wheel (4) are respectively provided with a mudguard (10).

4. The front double-wheel driving reciprocating tricycle as claimed in claim 1, wherein the transmission case (6) comprises a case (65), a left driving gear (66), a left double-linked gear (67), a left driven gear (68), a right driving gear (69), a right double-linked gear (70), a right driven gear (71), a left bevel gear (72), a right bevel gear (73) and an intermediate bevel gear (74) are arranged in the case (65), the left input shaft (61), the left output shaft (62), the right input shaft (63) and the right output shaft (64) are respectively rotatably mounted on the case (65), the left end of the left input shaft (61) extends to the outside of the case (65) to be connected with a left crank arm (8), the left driving gear (66) is mounted on the left input shaft (61) through a unidirectional transmission (75), the left end of the left output shaft (62) extends to the outside of the case (65) to be connected with a left front wheel (2), the left driven gear (68) is fixedly mounted on the right end of the left output shaft (62), the left double-linked gear (67) is rotatably mounted on the case (65) to the outside of the right crank arm (65) to be meshed with the left crank arm (68), the right driving gear (69) is arranged on the right input shaft (63) through a one-way transmission device (75), the right end of the right output shaft (64) extends to the outside of the box body (65) to be connected with the right front wheel (3), the right driven gear (71) is fixedly arranged at the left end of the right output shaft (64), the right duplex gear (70) is rotatably arranged on the box body (65), the small gear on the right duplex gear (70) is meshed with the right driving gear (69), the large gear is meshed with the right driven gear (71), the left bevel gear (72) is fixedly arranged at the right end of the left input shaft (61), the right bevel gear (73) is fixedly arranged at the left end of the right input shaft (63), and the middle bevel gear (74) is rotatably arranged on the box body (65) to be meshed with the left bevel gear (72) and the right bevel gear (73) respectively.

5. The front double-wheel driving reciprocating pedal tricycle as claimed in claim 4, wherein the left output shaft (62) and the right output shaft (64) are hollow shafts respectively, a mandrel (76) with the middle part fixed on the box (65) is arranged on the box (65), the left output shaft (62) and the right output shaft (64) are sleeved outside the mandrel (76) respectively left and right, the left end of the left output shaft (62) is fixedly connected with the left front wheel (2) and is in rotary fit with the left end of the mandrel (76) through a bearing, the right end of the left output shaft is in rotary fit with the mandrel (76) or the box (65) through a bearing, the right end of the right output shaft (64) is fixedly connected with the right front wheel (3) and is in rotary fit with the right end of the mandrel (76) through a bearing, and the left end of the right output shaft is in rotary fit with the mandrel (76) or the box (65) through a bearing.

6. The front two-wheel drive reciprocating tricycle of claim 4 wherein the unidirectional transmission (75) is a unidirectional bearing with an inner race fixedly mounted on the left input shaft (61) or the right input shaft (63) and an outer race fixedly mounted on the left drive gear (66) or the right drive gear (69).

7. The front two-wheel drive reciprocating tricycle as claimed in claim 4, wherein the unidirectional driver (75) is a ratchet-pawl driver with an inner ring fixedly mounted on the left input shaft (61) or the right input shaft (63) and an outer ring fixedly mounted on the left driving gear (66) or the right driving gear (69), wherein the ratchet teeth of the ratchet-pawl driver are arranged on the inner ring, the ratchet is arranged on the outer ring, a pawl spring is arranged between the pawl and the outer ring, or the ratchet teeth are arranged on the outer ring, the pawl is arranged on the inner ring, and a pawl spring is arranged between the pawl and the inner ring.

8. The front two-wheel drive reciprocating tricycle of claim 4 wherein the axes of the left (67) and right (70) duplex gears are in a straight line.

9. Front two-wheel drive reciprocating tricycle according to claim 1 characterised in that the axes of the left (61) and right (63) input shafts lie in a straight line.

10. The front two-wheel drive reciprocating tricycle of claim 1 wherein the axes of the left output shaft (62) and the right output shaft (64) are in a straight line.