CN219927908U - Bicycle - Google Patents

Abstract

The utility model provides a bicycle, and relates to the technical field of bicycles. The bicycle comprises a bicycle body, a front wheel and a rear wheel, wherein the front wheel and the rear wheel are respectively and rotatably arranged on the bicycle body; the first power input mechanism comprises a first driving rocker, a first connecting rod and a first crank, wherein the first driving rocker is rotationally connected with the vehicle body, the first crank is fixedly connected with the input end of the power transmission mechanism, the free end of the first crank is rotationally connected with the first connecting rod, and the free end of the first connecting rod is rotationally connected with the first driving rocker. The bicycle is driven by hand and foot force, and the driving force of the hand and foot is transmitted to the wheels of the bicycle by adopting the crank-rocker mechanism, so that the bicycle can move forward. The driving modes of pushing and pulling by two hands and pedaling enable multiple parts of the human body to participate in driving, and the human body can be exercised.

Description

Bicycle

Technical Field

The utility model relates to the technical field of bicycles, in particular to a bicycle.

Background

Bicycles, also known as bicycles or scooters, are typically two-wheeled small land vehicles. After people get on the vehicle, the pedal is taken as power, so that the vehicle is environment-friendly.

The existing practical popular bicycle mainly uses two feet to alternately tread the pedals of the bicycle to drive the bicycle to move forward. However, this method is simple and can be tired easily. And the bicycle has large volume, long body and high riding technical requirement.

Disclosure of Invention

The utility model aims to provide a bicycle, which can drive the bicycle by hand and foot force, and adopts a crank-rocker mechanism to transmit the hand and foot driving force to the wheels of the bicycle, so that the bicycle can advance. The driving modes of pushing and pulling by two hands and pedaling enable multiple parts of the human body to participate in driving, and the operation is simple, so that the human body can be exercised.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the bicycle comprises a bicycle body, a front wheel and a rear wheel, wherein the front wheel and the rear wheel are respectively and rotatably arranged at two ends of the bicycle body; the first power input mechanism comprises a first driving rocker, a first connecting rod and a first crank, wherein the first driving rocker is rotationally connected with the vehicle body, the first crank is fixedly connected with the input end of the power transmission mechanism, the free end of the first crank is rotationally connected with the first connecting rod, and the free end of the first connecting rod is rotationally connected with the first driving rocker.

Further, in the present utility model, the vehicle body includes a front frame and a rear frame, the front frame is rotatably connected to the rear frame, the front wheel is rotatably connected to the front frame, and the rear wheel is rotatably connected to the rear frame.

Further, in the present utility model, the power transmission mechanism includes a rotation shaft rotatably provided on the front frame, the central axis of the rotation shaft being parallel to the central axis of the front wheel, an eccentric cam provided on one end of the rotation shaft, a chain, and a driven cam coaxially connected to the front wheel and rotatable in synchronization with the front wheel, the eccentric cam being connected to the driven cam via the chain, and the driven cam being located on the same side of the front frame as the eccentric cam.

Further, in the present utility model, the first crank is fixedly connected to the eccentric cam, a free end of the first crank is rotatably connected to the first link, the first driving rocker is rotatably connected to the front frame, and a free end of the first link is rotatably connected to the first driving rocker.

Further, in the present utility model, the eccentric cam is provided with a weight mechanism, the weight mechanism includes a weight lever and a weight, the weight lever is provided on one side of the eccentric cam, the weight lever can rotate synchronously with the eccentric cam, and the weight is slidably provided on the weight lever and can slide freely on the weight lever.

Further, in the present utility model, the vehicle further comprises a second power input mechanism, wherein the second power input mechanism and the first power input mechanism are respectively located at two sides of the front frame, the second power input mechanism comprises a second driving rocker, a second connecting rod and a second crank, the second driving rocker is rotationally connected with the front frame and synchronously swings with the first driving rocker, the second crank is fixedly connected with the free end of the rotating shaft, the free end of the second crank is rotationally connected with the second connecting rod, and the free end of the second connecting rod is rotationally connected with the second driving rocker.

Further, in the present utility model, handles and pedals are provided at both ends of the first driving rocker and both ends of the second driving rocker.

Further, in the present utility model, the number of the rear wheels is two, the two rear wheels are coaxially disposed on both sides of the rear frame, and the two rear wheels are both rotatably connected to the rear frame.

Further, in the present utility model, a seat is provided on the rear frame.

Compared with the prior art, the embodiment of the utility model has at least the following advantages or beneficial effects:

the bicycle can be driven by the force generated by both hands and both feet of a person, and the driving force of both hands and both feet is transmitted to the eccentric tooth disc on the bicycle by adopting the crank rocker mechanism so as to ensure that the bicycle has sufficient power input, and then the bicycle can move forward under the control of the power. The driving mode of pushing and pulling by both hands and pedaling enables multiple parts of the human body to participate in the exercise, and the human body can be exercised.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present utility model, should fall within the ambit of the technical disclosure.

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a second schematic diagram of an embodiment of the present utility model;

fig. 4 is a cross-sectional view of the junction of the front frame and the rear frame of an embodiment of the present utility model.

Icon: 1-a front frame; 2-a rear frame; 3-front wheels; 4-rear wheels; 5-a first drive rocker; 6-a first link; 7-a first crank; 8-rotating shaft; 9-eccentric dental trays; 10-a chain; 11-driven dental tray; 12-a weight bar; 13-weight; 14-a second drive rocker; 15-a second link; 16-a second crank; 17-handle; 18-pedal; 19-a seat; 20-connecting pipes; 21-nut.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

The utility model is described in further detail below with reference to fig. 1-4.

Examples

Referring to fig. 1-4, the present embodiment provides a bicycle, which includes a bicycle body, a front wheel 3 and a rear wheel 4, wherein the front wheel 3 and the rear wheel 4 are respectively rotatably disposed at two ends of the bicycle body, and the bicycle is characterized by comprising a power transmission mechanism and a first power input mechanism, wherein an input end of the power transmission mechanism is rotatably connected with the bicycle body, an output end of the power transmission mechanism is coaxially connected with the front wheel 3, and an output end of the power transmission mechanism can synchronously rotate with the front wheel 3; the first power input mechanism comprises a first driving rocker 5, a first connecting rod 6 and a first crank 7, wherein the first driving rocker 5 is rotationally connected with the vehicle body, the first crank 7 is fixedly connected with the input end of the power transmission mechanism, the free end of the first crank 7 is rotationally connected with the first connecting rod 6, and the free end of the first connecting rod 6 is rotationally connected with the first driving rocker 5.

In this embodiment, the body, the front wheel 3 and the rear wheel 4 constitute the basic constituent unit of the bicycle. The first driving rocker 5, the first connecting rod 6, the first crank 7 and the vehicle body form a crank rocker mechanism, the vehicle body serves as a frame of the crank rocker mechanism, the first driving rocker 5 serves as a driving piece, and self reciprocating motion is converted into circular motion of the first crank 7 through the first connecting rod 6. The circular motion of the first crank 7 can drive the front wheel 3 of the bicycle to rotate, and the power transmission mechanism transmits the driving force of the first crank 7 to the front wheel 3 of the bicycle, so that the front wheel 3 rotates. Specifically, when riding the bicycle, a person can control the first driving rocker 5 to do swinging motion by hands or feet, the first connecting rod 6 does plane compound motion under the action of the first driving rocker 5, the first crank 7 does circular motion under the drive of the first connecting rod 6, the first crank 7 is fixedly connected with the input end of the power transmission mechanism, the input end of the power transmission mechanism synchronously rotates, the output end of the power transmission mechanism synchronously rotates under the drive of the input end of the power transmission mechanism, the output end of the power transmission mechanism is coaxially connected with the front wheel 3, and the front wheel 3 synchronously rotates under the drive of the output end of the power transmission mechanism.

Referring to fig. 3, it should be noted that the lengths of the first driving rocker 5, the first connecting rod 6 and the first crank 7 should be as follows: when the crank-rocker mechanism is at the dead point position, the included angle between the connecting line from the rotation center of the connecting part of the first crank 7 and the first connecting rod 6 to the rotation center of the connecting part of the first crank 7 and the input end of the power transmission mechanism and the horizontal plane is larger than 0 degree, so that the crank-rocker mechanism can smoothly pass through the dead point position to continuously operate.

In some implementations of the present embodiment, the vehicle body includes a front frame 1 and a rear frame 2, the front frame 1 is rotatably coupled to the rear frame 2, the front wheel 3 is rotatably coupled to the front frame 1, and the rear wheel 4 is rotatably coupled to the rear frame 2.

In this embodiment, the vehicle body is divided into a front frame 1 and a rear frame 2, and the front frame 1 and the rear frame 2 are rotatably connected together, so that the front frame 1 can rotate relative to the rear frame 2, and the steering purpose can be achieved by controlling the front frame 1 when riding the bicycle. Specifically, a connecting pipe 20 may be installed at the connection between the front frame 1 and the rear frame 2, one end of the rear frame 2 may be assembled with the connecting pipe 20, and then fastened by using a fastening member such as a nut 21, so that the front frame 1 may rotate relative to the rear frame 2.

In some embodiments of the present embodiment, the power transmission mechanism includes a rotating shaft 8, an eccentric toothed disc 9, a chain 10 and a driven toothed disc 11, the rotating shaft 8 is rotatably disposed on the front frame 1, the central axis of the rotating shaft 8 is parallel to the central axis of the front wheel 3, the eccentric toothed disc 9 and the driven toothed disc 11 are all located on the same side of the front frame 1, the eccentric toothed disc 9 is disposed at one end of the rotating shaft 8, the driven toothed disc 11 is coaxially connected with the front wheel 3, and can rotate synchronously with the front wheel 3, and the eccentric toothed disc 9 and the driven toothed disc 11 are connected through the chain 10.

In this embodiment, the eccentric cam 9, the chain 10 and the driven cam 11 constitute a chain transmission mechanism that transmits the driving force of the first power input mechanism to the front wheel 3 of the bicycle, and the front wheel 3 rotates accordingly. Specifically, the actuator (i.e., the first crank 7) of the first power input mechanism rotates to drive the eccentric cam 9 to synchronously rotate, and the driven cam 11 is driven by the chain 10 to synchronously rotate. Because the front wheel 3 is coaxially connected with the driven dental disk 11, the front wheel 3 can synchronously rotate with the driven dental disk 11, and therefore, the front wheel 3 is driven by the driven dental disk 11 to rotate. The chain transmission has: compared with belt transmission, the average transmission ratio is accurate, the transmission power is high, and the outline size is small; compared with gear transmission, the transmission center distance is large; can work under the condition of low-speed heavy load and high-temperature environment dislike; high efficiency, up to 0.99, etc., and is commonly used for power transmission of bicycles.

In some embodiments of the present embodiment, the first crank 7 is fixedly connected to the eccentric cam 9, the free end of the first crank 7 is rotatably connected to the first link 6, the first driving rocker 5 is rotatably connected to the front frame 1, and the free end of the first link 6 is rotatably connected to the first driving rocker 5.

In this embodiment, one end of the first crank 7 is fixedly connected with the rotation center of the eccentric cam 9, so that when the first crank 7 rotates, the eccentric cam 9 can synchronously rotate therewith to ensure the continuity of power transmission.

In some implementations of this embodiment, the eccentric cam 9 is provided with a weight mechanism, the weight mechanism includes a weight rod 12 and a weight 13, the weight rod 12 is disposed on one side of the eccentric cam 9, the weight rod 12 can rotate synchronously with the eccentric cam 9, and the weight 13 is slidably disposed on the weight rod 12 and can slide freely on the weight rod 12.

Referring to fig. 3, in this embodiment, the crank-rocker mechanism has two dead-center positions (i.e., the positions where the followers and links are collinear in the mechanism), which are detrimental to the motion of the transmission mechanism, and appropriate measures must be taken during design in order for the mechanism to continue to operate smoothly through the dead-center positions. The object of the present bicycle is to eliminate the adverse effect of the dead point position on the crank rocker mechanism by designing the weight 13 on the body. In particular, when the first connecting rod 6 is collinear with the first crank 7, this crank rocker mechanism is in a dead-center position. The weight 13 can slide on the weight 12 at will, and along with the rotation of the eccentric toothed disc 9, the weight 12 also rotates along with the rotation, and the weight 13 is always at the lowest point on the weight 12 due to the gravity. When the crank rocker mechanism reaches the dead point, the position of the balance weight 13 can change at any time, and when the crank rocker mechanism reaches the dead point, the balance weight 13 is positioned at the tail end of the balance weight rod 12, and the balance weight 13 can enable the crank rocker mechanism to punch through the dead point by means of the weight of the balance weight 13, so that the crank rocker mechanism runs continuously.

In some implementations of the present embodiment, the vehicle further includes a second power input mechanism, where the second power input mechanism and the first power input mechanism are located on two sides of the front frame 1, respectively, the second power input mechanism includes a second driving rocker 14, a second connecting rod 15, and a second crank 16, where the second driving rocker 14 is rotationally connected with the front frame 1 and swings synchronously with the first driving rocker 5, the second crank 16 is fixedly connected with a free end of the rotating shaft 8, a free end of the second crank 16 is rotationally connected with the second connecting rod 15, and a free end of the second connecting rod 15 is rotationally connected with the second driving rocker 14.

In this embodiment, the first power input mechanism and the second power input mechanism are controlled by the left hand left foot and the right hand right foot of the person, respectively. Specifically, when riding the bicycle, a person sits on the bicycle first, the left hand and the left foot control the first driving rocker 5, the right hand and the right foot control the second driving rocker 14, and the two rockers swing in a reciprocating manner. The purpose of the synchronous swinging of the first driving rocker 5 and the second driving rocker 14 is to conveniently control the rotating shaft 8, when the first driving rocker 5 or the second driving rocker 14 is independently controlled, the rotating shaft 8 can be rotated, but if the swinging of the two driving rockers is not synchronous, the rotation of the rotating shaft 8 can be influenced, and the force of hands and feet cannot be completely transmitted to the eccentric dental disc 9. The two cranks synchronously rotate under the drive of the two connecting rods, so that the rotating shaft 8 is jointly driven to rotate, and the eccentric toothed disc 9 rotates under the drive of the rotating shaft 8. The two power inputs provide sufficient power to the rotation of the eccentric cam 9 to ensure that the front wheel 3 of the bicycle is driven in rotation.

In some implementations of the present embodiment, both ends of the first driving rocker 5 and both ends of the second driving rocker 14 are provided with a handle 17 and a foot pedal 18.

In this embodiment, the bicycle is driven by pushing and pulling the hands and feet of a person, and the handles 17 and pedals 18 on the first driving rocker 5 and the second driving rocker 14 can provide an impetus for the hands and feet of the person, so that the person can conveniently control the two driving rockers. Specifically, when a person sits on the bicycle, the left foot of the person is placed on the pedal 18 of the first driving rocker 5, the left hand of the person holds the handle 17 of the first driving rocker 5, the right foot of the person is placed on the pedal 18 of the second driving rocker 14, the right hand of the person holds the handle 17 of the second driving rocker 14, and then the hands and feet are combined to push and pull the first driving rocker 5 and the second driving rocker 14, so that the first driving rocker 5 and the second driving rocker 14 can do reciprocating swing to respectively control the two connecting rods and the two cranks, and further drive the eccentric dental disc 9 to rotate.

In some embodiments of the present embodiment, the number of rear wheels 4 is two, two rear wheels 4 are coaxially disposed on both sides of the rear frame 2, and both rear wheels 4 are rotatably connected to the rear frame 2.

In this embodiment, the two rear wheels 4 and one front wheel 3 support the bicycle together, so that the bicycle is not easy to topple or rollover no matter when being used or not used, and people of all ages can ride conveniently.

In some implementations of the present embodiment, a seat 19 is provided on the rear frame 2.

In this embodiment, the seat 19 is convenient for a person to sit on the bicycle to ride.

When the bicycle is used, a person sits on the bicycle, places a left foot on the pedal 18 of the first driving rocker 5, holds the handle 17 of the first driving rocker 5 by a left hand, places a right foot on the pedal 18 of the second driving rocker 14, holds the handle 17 of the second driving rocker 14 by a right hand, and then holds the hands and feet together, pushes and pulls the first driving rocker 5 and the second driving rocker 14, so that the first driving rocker 5 and the second driving rocker 14 can synchronously do reciprocating swing, the two cranks rotate around the central axis of the rotating shaft 8 under the drive of the two connecting rods, so as to drive the eccentric toothed disc 9 to rotate, and the driven toothed disc 11 synchronously rotates under the drive of the chain 10, and the front wheel 3 of the bicycle can synchronously rotate with the driven toothed disc 11, so that the front wheel 3 starts to rotate.

In summary, the bicycle provided by the embodiment of the utility model has at least the following beneficial effects:

the bicycle can be driven by the force generated by both hands and feet of a person, the driving force of hands and feet is transmitted to the eccentric tooth disc 9 on the bicycle by adopting the crank-rocker mechanism, sufficient power input can be ensured, and then the bicycle can be driven forward under the control of the power. The pushing and pulling of the hands and the driving of the pedals 18 enable the body of the person to participate in the exercise at multiple positions, and the body can be exercised.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (9)

1. The bicycle comprises a bicycle body, a front wheel (3) and a rear wheel (4), wherein the front wheel (3) and the rear wheel (4) are respectively and rotatably arranged at two ends of the bicycle body; the first power input mechanism comprises a first driving rocker (5), a first connecting rod (6) and a first crank (7), wherein the first driving rocker (5) is rotationally connected with the vehicle body, the first crank (7) is fixedly connected with the input end of the power transmission mechanism, the free end of the first crank (7) is rotationally connected with the first connecting rod (6), and the free end of the first connecting rod (6) is rotationally connected with the first driving rocker (5).

2. A bicycle according to claim 1, characterized in that the body comprises a front frame (1) and a rear frame (2), the front frame (1) being in rotational connection with the rear frame (2), the front wheel (3) being in rotational connection with the front frame (1), the rear wheel (4) being in rotational connection with the rear frame (2).

3. The bicycle of claim 2, wherein the power transmission mechanism comprises a rotating shaft (8), an eccentric toothed disc (9), a chain (10) and a driven toothed disc (11), the rotating shaft (8) is rotatably arranged on the front frame (1), the central axis of the rotating shaft (8) is parallel to the central axis of the front wheel (3), the eccentric toothed disc (9) and the driven toothed disc (11) are both positioned on the same side of the front frame (1), the eccentric toothed disc (9) is arranged at one end of the rotating shaft (8), the driven toothed disc (11) is coaxially connected with the front wheel (3) and can synchronously rotate with the front wheel (3), and the eccentric toothed disc (9) and the driven toothed disc (11) are connected through the chain (10).

4. A bicycle according to claim 3, characterized in that the first crank (7) is fixedly connected to the eccentric toothed disc (9), the free end of the first crank (7) is rotatably connected to the first connecting rod (6), the first driving rocker (5) is rotatably connected to the front frame (1), and the free end of the first connecting rod (6) is rotatably connected to the first driving rocker (5).

5. A bicycle according to claim 3, characterized in that the eccentric toothed disc (9) is provided with a weight mechanism, the weight mechanism comprises a weight rod (12) and a weight (13), the weight rod (12) is arranged on one side of the eccentric toothed disc (9), the weight rod (12) can rotate synchronously with the eccentric toothed disc (9), and the weight (13) is arranged on the weight rod (12) in a sliding manner and can slide freely on the weight rod (12).

6. A bicycle according to claim 3, further comprising a second power input mechanism, said second power input mechanism and said first power input mechanism being located on both sides of said front frame (1), respectively, said second power input mechanism comprising a second driving rocker (14), a second connecting rod (15) and a second crank (16), said second driving rocker (14) being in rotational connection with said front frame (1) and being in synchronous oscillation with said first driving rocker (5), said second crank (16) being in fixed connection with the free end of said rotational shaft (8), the free end of said second crank (16) being in rotational connection with said second connecting rod (15), the free end of said second connecting rod (15) being in rotational connection with said second driving rocker (14).

7. A bicycle according to claim 6, characterized in that the first drive rocker (5) and the second drive rocker (14) are provided with a handle (17) and a pedal (18) at both ends.

8. A bicycle according to claim 2, characterized in that the number of rear wheels (4) is two, two rear wheels (4) being coaxially arranged on both sides of the rear frame (2), both rear wheels (4) being in rotational connection with the rear frame (2).

9. A bicycle according to claim 2, characterized in that the rear frame (2) is provided with a seat (19).