Reciprocating pedal tricycle driven by two front wheels

Abstract

The utility model relates to a front double wheel driven 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), a steering shaft (11) is rotatably mounted at the front part of the frame (1), a steering handle (12) is transversely arranged at the upper end of the steering shaft, and a transmission case (6) is arranged at the lower end of the steering shaft. A left input shaft (61) and a left output shaft (62) are arranged on the left side of the transmission case, a right input shaft (63) and a right output shaft (64) are arranged on 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 in a front-drive reciprocating stepping mode, more labor is saved when the bicycle is ridden by leaning on the backrest, and riding and steering are convenient. The bicycle is compact in structure, labor-saving in riding, safe and comfortable, and good in leisure and entertainment.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bicycle, in particular to a front double-wheel driving reciprocating pedal tricycle. BACKGROUND

[0002] The common tricycle adopts chain transmission, and its structure is not compact. When the tricycle is ridden, the pedals need to be pedaled in the circumferential direction, and the effective working angle of the pedal rotation is less than half a circle. The riding working angle is small, and it is not labor-saving to ride. The seat of the existing tricycle is relatively high, and it is not safe and comfortable to ride, and the leisure and entertainment performance is not good. SUMMARY

[0003] The utility model discloses a front double-wheel driving reciprocating pedal tricycle which is compact in structure, labor-saving to ride, safe and comfortable, and good in leisure and entertainment performance.

[0004] The technical solution of the utility model is as follows: it includes a frame, a left front wheel, a right front wheel, a rear wheel and a seat, the rear wheel is rotatably installed at the rear part of the frame, the seat is installed on the frame in front of the rear wheel, the front part of the frame is rotatably installed with a steering shaft, the upper end of the steering shaft is horizontally provided with a steering handle, and the lower end is provided with a transmission box fixedly connected with the steering shaft, the left side of the transmission box is provided with a left input shaft and a left output shaft, and the right side is provided with a right input shaft and a right output shaft, the left input shaft is horizontally provided with a left crank arm with a pedal at the other end, the right input shaft is horizontally provided with a right crank arm with a pedal at the other end, the left front wheel is fixedly connected with the left output shaft of the transmission box, and the right front wheel is fixedly connected with the right output shaft of the transmission box.

[0005] The utility model discloses a front double-wheel driving reciprocating pedal tricycle which is compact in structure, labor-saving to ride, safe and comfortable, and good in leisure and entertainment performance. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 It is the utility model embodiment solid structure diagram for the utility model embodiment solid structure diagram;

[0007] Figure 2 It is the utility model transmission device solid structure diagram for the utility model transmission device solid structure diagram. DETAILED DESCRIPTION

[0008] As Figure 1As shown, it includes a frame 1, a left front wheel 2, a right front wheel 3, a rear wheel 4, and a seat 5. The rear wheel 4 is rotatably mounted on the rear of the frame 1. The seat 5 is located in front of the rear wheel 4 and mounted on the frame 1. A steering shaft 11 is rotatably mounted on the front of the frame 1. A steering handle 12 is provided laterally at the upper end of the steering shaft 11, and a transmission box 6 is fixedly connected to the steering shaft 11 at the lower end. A left input shaft 61 and a left output shaft 62 are provided on the left side of the transmission box 6, and a right input shaft 63 and a right output shaft 64 are provided on the right side. A left crank arm 8 with a foot pedal 7 is provided laterally on the left input shaft 61, and a right crank arm 9 with a foot pedal 7 is provided laterally on the right input shaft 63. The left front wheel 2 is fixedly connected to the left output shaft 62 of the transmission box 6, and the right front wheel 3 is fixedly connected to the right output shaft 64 of the transmission box 6.

[0009] The frame 1 is equipped with a backrest 13 located at the rear of the seat 5.

[0010] Mudguards 10 are provided above the rear of the left front wheel 2, the right front wheel 3, and the rear wheel 4.

[0011] like Figure 2 As shown, the transmission box 6 includes a housing 65. Inside the housing 65 are a left driving gear 66, a left double gear 67, a left driven gear 68, a right driving gear 69, a right double gear 70, a right driven gear 71, a left bevel gear 72, a right bevel gear 73, and an intermediate bevel gear 74. The left input shaft 61, left output shaft 62, right input shaft 63, and right output shaft 64 are rotatably mounted on the housing 65. The left end of the left input shaft 61 extends outside the housing 65 and connects to the left crank arm 8. The left driving gear 66 is mounted on the left input shaft 61 via a one-way transmission 75. The left end of the left output shaft 62 extends outside the housing 65 and connects to the 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 gear 67 is rotatably mounted on the housing 65. The small teeth on the left double gear 67... The wheel meshes with the left driving gear 66, and the large gear meshes with the left driven gear 68. The right end of the right input shaft 63 extends outside the housing 65 and is connected to the right crank arm 9. The right driving gear 69 is mounted on the right input shaft 63 through a one-way transmission 75. The right end of the right output shaft 64 extends outside the housing 65 and is connected to the right front wheel 3. The right driven gear 71 is fixedly mounted on the left end of the right output shaft 64. The right double gear 70 is rotatably mounted on the housing 65. The small gear on the right double gear 70 meshes with the right driving gear 69, and the large gear meshes with the right driven gear 71. The left bevel gear 72 is fixedly mounted on the right end of the left input shaft 61, and the right bevel gear 73 is fixedly mounted on the left end of the right input shaft 63. The intermediate bevel gear 74 is rotatably mounted on the housing 65 and meshes with the left bevel gear 72 and the right bevel gear 73 respectively.

[0012] The left output shaft 62 and the right output shaft 64 are hollow shafts, the box 65 is provided with a mandrel 76 fixedly arranged in the middle of the box 65, the left output shaft 62 and the right output shaft 64 are respectively sleeved on the outside of the mandrel 76, the left end of the left output shaft 62 is fixedly connected with the left front wheel 2 and is rotatably connected with the left end of the mandrel 76 through a bearing, and the right end is rotatably connected 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 rotatably connected with the right end of the mandrel 76 through a bearing, and the left end is rotatably connected with the mandrel 76 or the box 65 through a bearing.

[0013] The one-way transmission 75 is a one-way bearing with an inner ring fixedly arranged on the left input shaft 61 or the right input shaft 63 and an outer ring fixedly arranged on the left driving gear 66 or the right driving gear 69.

[0014] The one-way transmission 75 is a ratchet and pawl transmission device with ratchets arranged on the inner ring and pawls arranged on the outer ring, and a pawl spring arranged between the pawls and the outer ring, or with ratchets arranged on the outer ring and pawls arranged on the inner ring, and a pawl spring arranged between the pawls and the inner ring.

[0015] The axes of the left double gear 67 and the right double gear 70 are located on a straight line.

[0016] The axes of the left input shaft 61 and the right input shaft 63 are located on a straight line,

[0017] The axes of the left output shaft 62 and the right output shaft 64 are located on a straight line.

[0018] The mudguards 10 of the left front wheel 2 and the right front wheel 3 are respectively fixedly arranged on the left and right ends of the mandrel 76, and the mudguard 10 of the rear wheel 4 is arranged on the frame 1.

[0019] Working principle:

[0020] When the rider steps forward on the left pedal 7 with the left foot, the left crank arm 8 drives the left driving gear 66 to rotate forward through the one-way transmission 75, the left driving gear 66 drives the left double gear 67 to rotate backward, and the left double gear 67 drives the left output shaft 62 and the left front wheel 2 to rotate forward through the left driven gear 68. At the same time, 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 backward through the intermediate bevel gear 74. Since the one-way transmission 75 is arranged between the right driving gear 69 and the right crank arm 9, the right crank arm 9 cannot drive the right driving gear 69 to rotate backward. When the rider steps forward on the right pedal 7 with the right foot, the right front wheel 3 is driven to rotate forward, and the left crank arm 8 is driven to swing backward.

[0021] The left and right feet of the rider are alternately reciprocatingly stepped on the left and right pedal plates 7, so as to drive the left front wheel 2 and the right front wheel 3 of the bicycle to continuously rotate forward, thereby achieving the purpose of driving the bicycle to move forward.

Claims

1. A front dual-wheel drive reciprocating pedal tricycle, comprising a frame (1), a left front wheel (2), a right front wheel (3), a rear wheel (4), and a seat (5), wherein the rear wheel (4) is rotatably mounted on the rear of the frame (1), the seat (5) is located in front of the rear wheel (4) and mounted on the frame (1), and a steering shaft (11) is rotatably mounted on the front of the frame (1), characterized in that: The upper end of the steering shaft (11) is provided with a steering handle (12), and the lower end is provided with a transmission box (6) fixedly connected with the steering shaft (11). The left side of the transmission box (6) is provided with a left input shaft (61) and a left output shaft (62), and the right side is provided with a right input shaft (63) and a right output shaft (64). The left input shaft (61) is provided with a left crank arm (8) with a foot pedal (7) at the other end. The right input shaft (63) is provided with a right crank arm (9) with a foot pedal (7) at the other end. 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).

2. The front dual wheel drive reciprocating pedal tricycle bicycle as claimed in claim 1, wherein The frame (1) is provided with a backrest plate (13) located at the rear of the seat (5).

3. The front dual wheel drive reciprocating pedal tricycle bicycle as claimed in claim 1, wherein The upper rear of the left front wheel (2), the right front wheel (3) and the rear wheel (4) is respectively provided with a mudguard (10).

4. The front dual wheel drive reciprocating pedal tricycle bicycle as claimed in claim 1, wherein The transmission box (6) comprises a box body (65), and the box body (65) is provided with a left driving gear (66), a left double gear (67), a left driven gear (68), a right driving gear (69), a right double gear (70), a right driven gear (71), a left bevel gear (72), a right bevel gear (73) and an intermediate bevel gear (74). The left input shaft (61), the left output shaft (62), the right input shaft (63) and the right output shaft (64) are rotatably installed on the box body (65). The left end of the left input shaft (61) extends out of the box body (65) and is connected with the left crank arm (8). The left driving gear (66) is installed on the left input shaft (61) through a one-way clutch (75). The left end of the left output shaft (62) extends out of the box body (65) and is connected with the left front wheel (2). The left driven gear (68) is fixedly installed on the right end of the left output shaft (62). The left double gear (67) is rotatably installed on the box body (65). The pinion on the left double gear (67) is engaged with the left driving gear (66), and the large gear is engaged with the left driven gear (68). The right end of the right input shaft (63) extends out of the box body (65) and is connected with the right crank arm (9). The right driving gear (69) is installed on the right input shaft (63) through a one-way clutch (75). The right end of the right output shaft (64) extends out of the box body (65) and is connected with the right front wheel (3). The right driven gear (71) is fixedly installed on the left end of the right output shaft (64). The right double gear (70) is rotatably installed on the box body (65). The pinion on the right double gear (70) is engaged with the right driving gear (69), and the large gear is engaged with the right driven gear (71). The left bevel gear (72) is fixedly installed on the right end of the left input shaft (61). The right bevel gear (73) is fixedly installed on the left end of the right input shaft (63). The intermediate bevel gear (74) is rotatably installed on the box body (65) and is engaged with the left bevel gear (72) and the right bevel gear (73) respectively.

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

6. The front dual wheeled drive reciprocating pedal tricycle bicycle as claimed in claim 4, wherein The one-way transmission device (75) is a one-way bearing with an inner ring fixedly installed on the left input shaft (61) or the right input shaft (63) and an outer ring fixedly installed on the left driving gear (66) or the right driving gear (69).

7. The front double wheel drive reciprocating pedal tricycle cycle as claimed in claim 4 wherein The one-way transmission device (75) is a ratchet and pawl transmission device with an inner ring fixedly installed on the left input shaft (61) or the right input shaft (63) and an outer ring fixedly installed on the left driving gear (66) or the right driving gear (69), the ratchet of the ratchet and pawl transmission device is arranged on the inner ring, the pawl is arranged on the outer ring, and 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.

8. The front dual wheeled drive reciprocating pedal tricycle bicycle as claimed in claim 4, wherein The axes of the left double gear (67) and the right double gear (70) are located on a straight line.

9. The front dual wheeled drive reciprocating pedal tricycle bicycle of claim 1, wherein The axes of the left input shaft (61) and the right input shaft (63) are located on a straight line.

10. The front dual wheel drive reciprocating pedal tricycle bicycle as claimed in claim 1, wherein The axes of the left output shaft (62) and the right output shaft (64) are located on a straight line.

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