Variable-speed tricycle

Abstract

The utility model relates to the technical field of tricycles, and discloses a variable-speed tricycle which comprises a tricycle frame, a transmission rod, a shaft rod, a speed change mechanism, two adjusting chain wheels and a chain, a bottom plate is fixedly arranged at the position, close to one side, of the lower end face of the tricycle frame, and supporting plates are fixedly arranged at the positions, close to the front side and the rear side, of the upper end face of the bottom plate. The outer end face of the shaft rod is fixedly sleeved with a multi-stage chain wheel close to the front side, and the outer end face of the transmission rod is fixedly sleeved with a first flywheel close to the front side. According to the utility model, the first flywheel is connected with the pedal part of the tricycle through the chain wheel, the second flywheel is connected with the wheel position of the tricycle through the multi-stage chain wheel, the two flywheels use the two short chains, the short chains are not easy to fall off when being used later, and the tricycle is lengthened through the frame, so that the tricycle is more stable to ride; the chain is adjusted through the speed change mechanism to reach different positions of the multi-stage chain wheel, and therefore speed change adjustment is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to tricycle technical field especially relates to speed change tricycle. BACKGROUND

[0002] Tricycle is a kind of traffic tool that is reformed from bicycle, can carry people and also can transport goods, tricycle is a kind of combination of rickshaw and bicycle, tricycle is divided into two parts, the front part has a steerable wheel, and the rear part of tricycle is mainly carriage, and two wheels are arranged under the carriage, the pedal on the front part is stepped by human body, and the rear part is reached through chain transmission, and the tricycle is pushed through the wheel of the rear part.

[0003] Most of the existing tricycles are integrated, and the speed change mechanism is arranged on the front part, which is not convenient to use, and the tricycle is transmitted by a long chain, so the chain is easy to fall off in later use, therefore, the utility model provides a speed change tricycle to solve the problems in the above background technology. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a speed change tricycle to solve the problems in the above background technology, which is provided to solve the problems in the prior art, the first flywheel is connected with the tricycle pedal part sprocket, the second flywheel is connected with the tricycle wheel position multi-stage sprocket, two short chains are used for the two flywheels, the short chain is not easy to fall off in later use, and the tricycle is lengthened by the frame, so that the tricycle is more stable when riding.

[0005] To achieve the above object, the utility model provides the following technical scheme: a speed change tricycle, which comprises a frame, a transmission rod, a shaft, a speed change mechanism, two adjusting sprockets and a chain, a bottom plate is fixedly arranged on the lower end surface of the frame, and a supporting plate is fixedly arranged on the front side and the rear side of the upper end surface of the bottom plate.

[0006] A multi-stage sprocket is fixedly arranged on the front side of the outer end surface of the shaft, a first flywheel is fixedly arranged on the front side of the outer end surface of the transmission rod, and a second flywheel is fixedly arranged on the rear side of the outer end surface of the transmission rod.

[0007] Through the above technical scheme, the frame of the tricycle is provided with the shaft and the speed change mechanism, the bottom plate is fixed at one end of the frame, the transmission rod is arranged on the bottom plate, and the two flywheels are arranged on the rotating rod, the first flywheel is connected with the user's pedal sprocket through the chain, the first flywheel is driven to rotate by stepping the pedal, so as to drive the second flywheel to rotate through the rotating rod, and the rotating second flywheel drives the multi-stage sprocket to rotate through the connecting belt, realizes the movement of the tricycle, the tricycle uses two short chains, and the possibility of chain loosening and falling off is reduced.

[0008] Further, the first connecting piece is fixedly arranged on one side of the upper end surface of each of the two supporting plates; and the transmission rod is rotatably arranged between the two first connecting pieces.

[0009] Through the above technical scheme, the first connecting piece on the supporting plate supports and fixes the transmission rod, so that the transmission rod is more stable in transmission.

[0010] Further, the bracket is fixedly arranged on the other side of the upper end surface of the frame; the supporting seat is fixedly arranged on the upper end surface of the middle of each of the two brackets; and the shaft rod is rotatably arranged between the inner walls of the two supporting seats.

[0011] Through the above technical scheme, the bracket on the frame supports the supporting seat, and the shaft rod is rotatably arranged in the supporting seat, so that the shaft rod is more stable in rotation and facilitates the movement of the tricycle.

[0012] Further, the second connecting piece is fixedly arranged on the middle of the upper end surface of the frame; and the speed change mechanism is fixedly arranged on the rear end surface of the second connecting piece; and the two adjusting sprockets are rotatably arranged on the front end surface of the speed change mechanism and on the upper side.

[0013] Through the above technical scheme, the speed change mechanism is fixedly arranged on the second connecting piece, so that the speed change mechanism can adjust the chain to reach different toothed discs of the multi-stage sprocket, thereby facilitating the speed adjustment of the tricycle.

[0014] Further, the chain is arranged between the second freewheel, the two adjusting sprockets and the multi-stage sprocket.

[0015] Through the above technical scheme, the second freewheel, the adjusting sprocket and the multi-stage sprocket are connected by the chain, so that the rotating second freewheel drives the multi-stage sprocket to rotate, thereby driving the tricycle.

[0016] Further, two mounting holes are formed in the opposite end surfaces of the two supporting plates.

[0017] Through the above technical scheme, the mounting holes in the supporting plates facilitate the fixed installation of the front wheel part of the tricycle.

[0018] The utility model has the following beneficial effects:

[0019] 1. The speed change tricycle provided by the utility model is provided with a bottom plate on the frame of the tricycle, a transmission rod is arranged on the bottom plate, a first freewheel and a second freewheel are fixedly arranged on the transmission rod, the first freewheel is connected with a sprocket of a tricycle pedal part, the second freewheel is connected with a multi-stage sprocket at the position of a tricycle wheel, two short chains are used for the two freewheels, the short chains are not easy to fall off in use, and the frame lengthens the tricycle, so that the tricycle is more stable in riding.

[0020] 2、 The variable speed tricycle that the utility model provides, the multistage sprocket and the speed change mechanism of this tricycle are arranged on the frame, the adjusting sprocket is arranged on the speed change mechanism, the position of the chain on the multistage sprocket is adjusted through the speed change mechanism to the adjusting sprocket, the variable speed adjustment of the tricycle is facilitated, and the tricycle head and the car are separated, so that the tricycle loading and unloading transportation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the shaft measurement schematic diagram of the utility model;

[0022] Figure 2 It is the shaft measurement schematic diagram of the frame of the utility model;

[0023] Figure 3 It is the front view schematic diagram of the utility model;

[0024] Figure 4 It is the shaft measurement schematic diagram of the utility model.

[0025] Legend:

[0026] 1, support;2, support seat;3, shaft;4, frame;5, support plate;6, first flywheel;7, transmission rod;8, second flywheel;9, first connecting piece;10, bottom plate;11, chain;12, adjusting sprocket;13, speed change mechanism;14, multistage sprocket;15, mounting hole;16, second connecting piece. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0028] EMBODIMENT

[0029] Reference Figures 1-4 The utility model provides an embodiment: variable speed tricycle, including frame 4, transmission rod 7, shaft 3, speed change mechanism 13, two adjusting sprocket 12 and chain 11, frame 4 lower end face leans one side position fixedly set up bottom plate 10, bottom plate 10 upper end face leans front side and rear side position and is fixedly set up with support plate 5;

[0030] The transmission rod 7 is supported by the support plate 5 on the bottom plate 10, and the force of the foot pedal can be transmitted by the rotating transmission rod 7. The basket and the head of the tricycle are separated, which can be transported separately when needed, and the speed regulating mechanism is arranged on the rear half, which is more convenient to use.

[0031] The outer end face of the shaft rod 3 is fixedly provided with a multi-stage chain wheel 14, the outer end face of the transmission rod 7 is fixedly provided with a first flywheel 6, and the outer end face of the transmission rod 7 is fixedly provided with a second flywheel 8;

[0032] The tricycle frame 4 is provided with a shaft rod 3 and a speed regulating mechanism 13, and the bottom plate 10 is fixed at one end of the frame 4. The transmission rod 7 is arranged on the bottom plate 10, and two flywheels are arranged on the rotating rod. The first flywheel 6 is connected with the user's foot pedal chain wheel through the chain 11. The first flywheel 6 is driven to rotate by pedaling the pedal, so as to drive the second flywheel 8 to rotate through the rotating rod. The rotating second flywheel 8 drives the multi-stage chain wheel 14 to rotate through the connecting belt, realizing the movement of the tricycle. The tricycle uses two short chains 11, reducing the possibility of chain 11 loosening and falling off.

[0033] The upper end face of the two support plates 5 is fixedly provided with a first connecting piece 9 on the opposite side, and the transmission rod 7 is rotatably arranged between the two first connecting pieces 9. The upper end face of the frame 4 is fixedly provided with a support 1 on the front side and the rear side. The upper end face of the two supports 1 is fixedly provided with a support seat 2 on the middle position, and the shaft rod 3 is rotatably arranged between the inner walls of the two support seats 2;

[0034] The first connecting piece 9 on the support plate 5 supports and fixes the transmission rod 7, so that the transmission rod 7 is more stable in transmission. The support seat 2 is supported by the support 1 on the frame 4, and the shaft rod 3 is rotatably arranged in the support seat 2. The support seat 2 makes the shaft rod 3 rotate more stably, which is convenient for driving the tricycle to move.

[0035] The upper end face of the frame 4 is fixedly provided with a second connecting piece 16 on the front side of the middle position, and the speed regulating mechanism 13 is fixedly arranged on the rear end face of the second connecting piece 16. The two adjusting chain wheels 12 are rotatably arranged on the upper side of the front end face of the speed regulating mechanism 13. The chain 11 is arranged between the second flywheel 8, the two adjusting chain wheels 12 and the multi-stage chain wheel 14. The opposite end faces of the two support plates 5 are provided with two mounting holes 15;

[0036] The variable speed mechanism 13 is fixedly arranged on the second connecting piece 16, and the chain 11 reaches different toothed discs of the multi-stage sprocket 14 through the variable speed mechanism 13, so that the tricycle can be conveniently adjusted in speed; the second flywheel 8, the adjusting sprocket 12 and the multi-stage sprocket 14 are connected through the chain 11, the rotating second flywheel 8 drives the multi-stage sprocket 14 to rotate, thereby driving the tricycle, and the front wheel part of the tricycle is conveniently fixed and installed through the mounting hole 15 on the supporting plate 5.

[0037] Working principle: one end of the frame 4 of the tricycle is fixed with the bottom plate 10, the transmission rod 7 is arranged on the bottom plate 10, two flywheels are arranged on the transmission rod 7, the first flywheel 6 is connected with the user's pedal sprocket through the chain 11, the shaft rod 3 and the variable speed mechanism 13 are arranged on the frame 4, the multi-stage sprocket 14 is arranged on the shaft rod 3, the first flywheel 6 is driven to rotate through the pedal, thereby driving the second flywheel 8 to rotate through the rotating rod, the rotating second flywheel 8 drives the multi-stage sprocket 14 to rotate through the connecting belt, the tricycle is moved, the adjusting sprocket 12 is pushed through the variable speed mechanism 13, thereby adjusting the position of the chain 11 on the multi-stage sprocket 14, and the tricycle is conveniently adjusted in speed.

[0038] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A variable speed tricycle comprising a frame (4), a transmission rod (7), an axle rod (3), a variable speed mechanism (13), two adjusting sprockets (12) and a chain (11), characterized in that: The lower end surface of the frame (4) is fixedly provided with a bottom plate (10) at one side position, and the upper end surface of the bottom plate (10) is fixedly provided with a support plate (5) at the front side and the rear side positions. The outer end surface of the shaft rod (3) is fixedly sleeved with a multi-stage chain wheel (14) at the front side position, the outer end surface of the transmission rod (7) is fixedly sleeved with a first flywheel (6) at the front side position, and the outer end surface of the transmission rod (7) is fixedly sleeved with a second flywheel (8) at the rear side position.

2. The variable speed tricycle of claim 1, wherein: The upper end surfaces of the two support plates (5) are fixedly provided with a first connecting piece (9) at one side and the opposite side positions, and the transmission rod (7) is rotatably arranged between the two first connecting pieces (9).

3. The variable speed tricycle of claim 1, wherein: The upper end surface of the frame (4) is fixedly provided with a support (1) at the other side, the front side and the rear side positions, and the upper end surfaces of the two supports (1) are fixedly provided with a support seat (2) at the middle position.

4. The variable speed tricycle of claim 1, wherein: The upper end surface of the frame (4) is fixedly provided with a second connecting piece (16) at the middle position of the front side, and the transmission rod (7) is rotatably arranged between the two first connecting pieces (9).

5. The variable speed tricycle of claim 1, wherein: The chain (11) is arranged between the second flywheel (8), the two adjusting chain wheels (12) and the multi-stage chain wheel (14).

6. The variable speed tricycle of claim 1, wherein: The opposite side end surfaces of the two support plates (5) are each provided with two mounting holes (15).

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