High-stability double-chain-driven tricycle

Abstract

The utility model relates to the technical field of tricycles, and discloses a high-stability double-chain drive tricycle which comprises a tricycle frame, a connecting mechanism, a first chain and a second chain, the front side of the upper end of the tricycle frame is fixedly connected with a long connecting frame, and the other front side of the upper end of the tricycle frame is fixedly connected with a short connecting frame. Connecting pieces are fixedly connected to the rear opposite sides of the upper ends of the long connecting frame and the short connecting frame, the connecting mechanism is arranged between the two connecting pieces, the connecting mechanism comprises a shaft sleeve, second chain wheels fixedly sleeve the two sides of the outer surface of the shaft sleeve, and bearings are rotationally arranged in the front and the back of the interior of the shaft sleeve in a sleeving mode; and a short shaft rod is fixedly arranged between the two bearings in a sleeving manner. According to the utility model, through the arrangement of the connecting mechanism, the positions of the chain wheel and the chain are in an approximately-centered straight line on the frame, so that the strength is more concentrated, the strength can be saved, and the situation that the chain wheel is easy to damage due to the dispersion of the strength is reduced.

Description

Technical Field

[0001] This utility model relates to the field of tricycle technology, and in particular to a highly stable dual-chain driven tricycle. Background Technology

[0002] A double-chain tricycle typically refers to a tricycle with a double-chain drive system. This design provides better stability and power transmission efficiency. The double-chain system distributes force more evenly between the wheels, allowing for smoother travel on uneven surfaces. Furthermore, the three-wheel design itself enhances vehicle stability, especially at low speeds.

[0003] Most existing double-chain tricycles consist of two chains connected to the rear and front wheels respectively. The driving force is transmitted through the sprockets and chains, thus enabling the tricycle to move. However, in existing double-chain tricycles, the distance between the two chains is relatively large, resulting in a relatively dispersed force that cannot be concentrated and unified, making it more labor-intensive and also making the sprockets prone to damage. Therefore, those skilled in the art have provided a highly stable double-chain driven tricycle to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies by proposing a highly stable dual-chain driven tricycle. The sprocket and chain are positioned relatively centrally on the tricycle, and all three are approximately in a straight line. This allows for more concentrated and efficient use of the tricycle, reducing the risk of damage to the sprocket due to dispersed force.

[0005] To achieve the above objectives, this utility model provides the following technical solution.

[0006] A highly stable dual-chain driven tricycle includes a frame, a connecting mechanism, a first chain, and a second chain. A long connecting frame is fixedly connected to the front side of the upper end of the frame, and a short connecting frame is fixedly connected to the other front side of the upper end of the frame. Connecting parts are fixedly connected to the opposite rear sides of the upper ends of the long connecting frame and the short connecting frame. The connecting mechanism is disposed between the two connecting parts.

[0007] The connecting mechanism includes a bushing, on both sides of the outer surface of the bushing a second sprocket is fixedly fitted, and bearings are fixedly fitted at the front and back inside the bushing. A short shaft is rotatably fitted between the two bearings.

[0008] Furthermore, brackets are fixedly connected to both rear sides of the upper end of the frame, and support seats are fixedly connected to the upper ends of the two brackets.

[0009] Further, a long shaft rod is rotatably sleeved between the two support seats, and a third sprocket is fixedly sleeved on the outer surface of the long shaft rod.

[0010] Further, a hole is formed in one side of the long connecting frame, and a hollow shaft is rotatably sleeved in the hole.

[0011] Further, a first sprocket is fixedly connected to one side of the hollow shaft, and the short shaft rod is fixedly arranged between the two connecting pieces.

[0012] Further, the first chain is arranged between the first sprocket and a second sprocket close to one side of the short connecting frame, and the second chain is arranged between the third sprocket and a second sprocket close to one side of the long connecting frame.

[0013] The utility model has the advantages of the following:

[0014] 1. The utility model discloses a double-chain driven tricycle with high stability, wherein the positions of the third sprocket, the connecting mechanism and the first sprocket on the frame are relatively close to the middle, and the positions of the three are approximately on a straight line. When a user uses the tricycle, the force is relatively uniformly concentrated, and the dispersion of the force is reduced. Therefore, the user can save energy when using the double-chain driven tricycle, and the damage of the sprocket caused by the dispersion of the force is reduced, and the stability of the double-chain driven tricycle is improved.

[0015] 2. The utility model discloses a double-chain driven tricycle with high stability, wherein the position of the second sprocket on the shaft sleeve is shortened, the wheelbase is shortened, the distance between the two second sprockets is small, the positions of the first sprocket, the third sprocket, the first chain and the second chain on the frame are relatively close to the middle, and the second sprocket is fixedly connected to the outer surface of the shaft sleeve. The rotating effect is realized by the bearing in the shaft sleeve and the short shaft rod. Compared with the rotating effect realized by the sprocket, the damage of the sprocket caused by the rotor is avoided, and the stability of the double-chain driven tricycle is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view of the utility model;

[0017] Figure 2 It is a back view of the utility model;

[0018] Figure 3 It is a side view of the long connecting frame of the utility model;

[0019] Figure 4 It is a structure diagram of the connecting mechanism of the utility model;

[0020] Figure 5 It is a sectional view of the connecting mechanism of the utility model.

[0021] Legend:

[0022] 1, frame; 2, No. chain; 3, short connecting frame; 4, No. chain wheel; 5, hollow shaft; 6, long connecting frame; 7, connecting mechanism; 8, No. 3 chain wheel; 9, long shaft; 10, support seat; 11, support; 12, No. 2 chain; 13, connecting piece; 14, hole; 701, shaft sleeve; 702, No. 2 chain wheel; 703, short shaft; 704, bearing. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Reference Figures 1-4 An embodiment provided by the utility model:

[0025] A double-chain driven tricycle with high stability, comprising a frame 1, a connecting mechanism 7, a No. 2 chain 12, a No. 2 chain 12, a long connecting frame 6 is fixedly connected to the front side of the upper end of the frame 1, a short connecting frame 3 is fixedly connected to the other side of the upper end of the frame 1, a connecting piece 13 is fixedly connected to the opposite side of the upper end of the long connecting frame 6 and the short connecting frame 3, and the connecting mechanism 7 is arranged between the two connecting pieces 13.

[0026] The connecting mechanism 7 comprises a shaft sleeve 701, No. 2 chain wheels 702 are fixedly sleeved on the outer surfaces of both sides of the shaft sleeve 701, bearings 704 are fixedly sleeved in the front and back of the shaft sleeve 701, a short shaft 703 is rotatably sleeved between the two bearings 704, supports 11 are fixedly connected to the rear sides of the upper end of the frame 1, support seats 10 are fixedly connected to the upper ends of the two supports 11, a long shaft 9 is rotatably sleeved between the two support seats 10, a No. 3 chain wheel 8 is fixedly sleeved on the center of the outer surface of the long shaft 9, a hole 14 is formed in the front side of the long connecting frame 6, a hollow shaft 5 is rotatably sleeved in the hole 14, a No. 1 chain wheel 4 is fixedly connected to one side of the hollow shaft 5, the short shaft 703 is fixedly arranged between the two connecting pieces 13, the No. 1 chain 2 is arranged between the No. 1 chain wheel 4 and the No. 2 chain wheel 702 close to the side of the short connecting frame 3, and the No. 2 chain 12 is arranged between the No. 3 chain wheel 8 and the No. 2 chain wheel 702 close to the side of the long connecting frame 6.

[0027] Specifically, the force of the foot stepping is transmitted to the hollow shaft 5 rotatingly sleeved in the hole 14 of the long connecting frame 6, the hollow shaft 5 rotates to make the first sprocket 4 rotate, the first sprocket 4 rotates to make the first chain 2 connected with the teeth on the sprocket rotate, the first chain 2 rotates to drive the teeth on the second sprocket 702 close to the short connecting frame 3 to rotate, thereby making the second sprocket 702 close to the short connecting frame 3 rotate, the second sprocket 702 close to the short connecting frame 3 rotates to make the shaft sleeve 701 rotate, the shaft sleeve 701 rotates to make the bearing 704 fixedly sleeved inside rotate on the short shaft 703, thereby making the second sprocket 702 close to the long connecting frame 6 rotate, the second sprocket 702 close to the long connecting frame 6 rotates to make the second chain 12 move, the second chain 12 moves to drive the third sprocket 8 to rotate, the third sprocket 8 rotates to drive the long shaft 9 to rotate, the third sprocket 8, the connecting mechanism 7 and the first sprocket 4 are relatively close to the middle on the frame 1, and the positions of the three are approximately on a straight line, so that the force of the user is relatively uniform and concentrated during use, the user can save energy during use, the chain sprocket is less likely to be damaged due to dispersion of force, and the stability of the double-chain driven tricycle is improved.

[0028] Working principle: The long connecting frame 6 is fixedly connected to the front side of the upper end of the frame 1, the short connecting frame 3 is fixedly connected to the other side of the upper end of the frame 1, the connecting mechanism 7 is arranged between the two connecting pieces 13, the force of the foot stepping is transmitted to the hollow shaft 5 rotatingly sleeved in the hole 14 of the long connecting frame 6, the hollow shaft 5 rotates to make the first sprocket 4 rotate, the first sprocket 4 rotates to make the first chain 2 rotate, the first chain 2 rotates to drive the second sprocket 702 close to the short connecting frame 3 to rotate, the second sprocket 702 close to the short connecting frame 3 rotates to make the shaft sleeve 701 rotate, thereby making the second sprocket 702 close to the long connecting frame 6 rotate, the second sprocket 702 close to the long connecting frame 6 rotates to make the second chain 12 move, the upper end of the frame 1 is fixedly connected with the brackets 11 on both sides, the support seats 10 are fixedly connected to the upper ends of the two brackets 11, the long shaft 9 is rotatingly sleeved between the two support seats 10, the third sprocket 8 is fixedly sleeved on the outer surface of the long shaft 9 close to the center, the second chain 12 moves to drive the third sprocket 8 to rotate, the third sprocket 8 rotates to drive the long shaft 9 to rotate, thereby realizing the movement of the double-chain driven tricycle, the force of the user is relatively uniform and concentrated during use, the user can save energy during use, the chain sprocket is less likely to be damaged due to dispersion of force, and the stability of the double-chain driven tricycle is improved.

[0029] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A highly stable dual-chain driven tricycle, comprising a frame (1), a connecting mechanism (7), a first chain (2), and a second chain (12), characterized in that: A long connecting frame (6) is fixedly connected to the front side of the upper end of the frame (1), and a short connecting frame (3) is fixedly connected to the other front side of the upper end of the frame (1). Connecting parts (13) are fixedly connected to the opposite rear side of the upper ends of the long connecting frame (6) and the short connecting frame (3). The connecting mechanism (7) is arranged between the two connecting parts (13). The connecting mechanism (7) includes a bushing (701), on both sides of the outer surface of the bushing (701) a second sprocket (702) is fixedly fitted, and bearings (704) are fixedly fitted inside the bushing (701) at both the front and rear. A short shaft (703) is rotatably fitted between the two bearings (704).

2. The highly stable dual-chain driven tricycle according to claim 1, characterized in that: The upper end of the frame (1) is fixedly connected to the rear two sides of the frame (1), and the upper end of the two brackets (11) is fixedly connected to the support base (10).

3. A highly stable dual-chain driven tricycle according to claim 2, characterized in that: A long shaft (9) is rotatably sleeved between the two support seats (10), and a No. 3 sprocket (8) is fixedly sleeved on the outer surface of the long shaft (9) near the center.

4. A highly stable dual-chain driven tricycle according to claim 3, characterized in that: The long connecting frame (6) has a hole (14) on one side, and a hollow shaft (5) is rotatably fitted inside the hole (14).

5. A highly stable dual-chain driven tricycle according to claim 4, characterized in that: A sprocket (4) is fixedly connected to one side of the hollow shaft (5), and the short shaft (703) is fixedly disposed between the two connecting parts (13).

6. A highly stable dual-chain driven tricycle according to claim 1, characterized in that: The first chain (2) is positioned between the first sprocket (4) and the second sprocket (702) on the side near the short connecting frame (3), and the second chain (12) is positioned between the third sprocket (8) and the second sprocket (702) on the side near the long connecting frame (6).

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