An automatically steerable bicycle

Abstract

The present invention relates to the technical field of bicycles, and provides an automatically steering bicycle, comprising: a main shaft, a first rotating wheel, a second rotating wheel, a connecting shaft and a main frame body. The main shaft is rotatably arranged at the center of the first rotating wheel, and the main frame body is fixed at both ends of the main shaft. There are two second rotating wheels, and the two second rotating wheels are respectively rotatably arranged at both ends of the connecting shaft. The connecting shaft is rotatably connected to the main frame body, and a pushing member is arranged on the main frame body to push the connecting shaft to turn along with the turning of the main frame body. A three-wheeled bicycle is formed by the first rotating wheel and the two second rotating wheels, so that the bicycle will not tip over, and there is no need to use hands to control the balance of the bicycle. At the same time, the direction of the bicycle can be changed by changing the forward direction of the first rotating wheel or the second rotating wheel, and the forward direction of the first rotating wheel or the second rotating wheel can be realized by the deflection of the human body. Therefore, the bicycle can be ridden with hands off.

Description

Technical Field

[0001] The present invention relates to the technical field of bicycles, and more particularly to an automatically steering bicycle. Background Art

[0002] Bicycles are traditional industries with a history of more than 100 years. Due to environmental protection and traffic problems, bicycles have gradually become a favorite means of transportation for people. Currently, bicycles generally include two-wheel bicycles, three-wheel bicycles, and four-wheel bicycles. Existing bicycles generally include a frame, a front wheel bracket, a front wheel, a rear wheel, and a chain and sprocket drive mechanism. The front wheel is rotatably arranged on the front wheel bracket, the rear wheel is rotatably arranged on the frame, and one end of the frame is sleeved on the bracket through a rotating connection structure, so as to realize the steering connection of the front wheel relative to the rear wheel. A handle is also provided on the front wheel bracket for people to hold by hand to change the forward direction of the bicycle. All existing bicycles need to be held by hand to change the direction of the bicycle and ensure the stability of the forward direction. For normal people, the bicycle cannot be ridden without holding the handle. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatically steering bicycle, aiming to solve the technical problem that for normal people, the bicycle cannot be ridden without holding the handle in the prior art.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: an automatically steering bicycle, including: a main shaft, a first rotating wheel, a second rotating wheel, a connecting shaft, and a main frame body. The main shaft is rotatably arranged at the center of the first rotating wheel. The main frame body is fixed at both ends of the main shaft. There are two second rotating wheels, and the two second rotating wheels are respectively rotatably arranged at both ends of the connecting shaft. The connecting shaft is rotatably connected to the main frame body. A pushing member is provided on the main frame body to push the connecting shaft to turn along with the turning of the main frame body.

[0005] In one embodiment, the middle of the connecting shaft is rotatably connected to the main frame body through a rotating member. The rotating member includes a rotating part and a mounting part. The mounting part is connected to the main frame body. A first mounting hole is provided on the connecting shaft, and the rotating part is rotatably arranged in the first mounting hole.

[0006] In one embodiment, a rotating shaft protrudes from the main frame body. A second mounting hole for the rotating shaft to pass through is provided on the mounting part. The pushing member is fixed at one end of the rotating shaft away from the main frame body, and the mounting part is rotatably arranged on the rotating shaft.

[0007] In one embodiment, the pushing member includes: a connecting plate and two side plates located at both ends of the connecting plate. The two side plates and the connecting plate enclose a U shape. The connecting plate is fixedly connected to the rotating shaft. One end of each of the two side plates is provided with an inclined surface, and the inclined surface abuts against the connecting shaft.

[0008] In one embodiment, the connecting shaft includes: an intermediate section, and a first mounting section and a second mounting section respectively hinged to both ends of the intermediate section. One second rotating wheel is rotatably mounted on the first mounting section, and the other second rotating wheel is rotatably mounted on the second mounting section.

[0009] In one embodiment, the rotating member includes: a convex block protruding from the connecting shaft, and a rotating shaft provided on the main frame body and rotatably connected to the convex block. The extending direction of the rotating shaft is perpendicular to the extending direction of the connecting shaft.

[0010] In one embodiment, the pushing member includes: a swinging bar arranged in parallel at an interval with the intermediate section, a first connecting piece with one end hinged to one end of the swinging bar and the other end fixedly connected to the first mounting section, a second connecting piece with one end hinged to the other end of the swinging bar and the other end fixedly connected to the second mounting section, and a pushing block fixed on the rotating shaft and used for pushing the swinging bar to swing left and right.

[0011] In one embodiment, a groove is provided on the swinging bar, and the pushing block is accommodated in the groove.

[0012] In one embodiment, the first connecting piece and the first mounting section are integrally formed and coaxially hinged to the intermediate section, and the second connecting piece and the second mounting section are integrally formed and coaxially hinged to the intermediate section.

[0013] In one embodiment, the main frame body includes a first U-shaped frame body and an arc-shaped frame body. The first U-shaped frame body is vertically arranged and fixed at both ends of the main shaft. One end of the arc-shaped frame body is fixed at the end of the first U-shaped frame body far from the main shaft, and the other end is bent into a horizontal end and rotatably connected to the connecting shaft. A seat is provided on the first U-shaped frame body; alternatively, the main frame body includes a first U-shaped frame body and a second U-shaped frame body. The second U-shaped frame body is horizontally arranged and fixed at both ends of the main shaft. The first U-shaped frame body is vertically arranged on the second U-shaped frame body. A seat is provided on the first U-shaped frame body, and the second U-shaped frame body is rotatably connected to the connecting shaft.

[0014] Advantages of the present invention:

[0015] An automatic-steering bicycle provided by the present invention forms a three-wheeled bicycle through a first rotating wheel and two second rotating wheels, enabling the bicycle itself to have balance, so that the bicycle will not tip over. Therefore, there is no need to use human hands to control the balance of the bicycle. At the same time, the direction of the bicycle can be changed by changing the forward direction of the first rotating wheel or the second rotating wheel, and the forward direction of the first rotating wheel or the second rotating wheel can be achieved by driving a connecting shaft to turn by deflecting the human body to drive a pushing member, ensuring safety during the riding process. Therefore, the bicycle can be ridden with hands off. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Structural schematic diagram of the automatic-steering bicycle provided in Embodiment 1 of the present invention;

[0018] Figure 2 For Figure 1 Enlarged view of part A in

[0019] Figure 3 Partial exploded structural schematic diagram of the automatic-steering bicycle provided in Embodiment 1 of the present invention;

[0020] Figure 4 Structural schematic diagram of the automatic-steering bicycle provided in Embodiment 2 of the present invention;

[0021] Figure 5 Partial exploded structural schematic diagram of the automatic-steering bicycle provided in Embodiment 2 of the present invention;

[0022] Figure 6 Structural schematic diagram of the automatic-steering bicycle provided in Embodiment 3 of the present invention;

[0023] Figure 7 Partial exploded structural schematic diagram of the automatic-steering bicycle provided in Embodiment 3 of the present invention.

[0024] Reference numerals: 1, first rotating wheel; 2, second rotating wheel; 3, connecting shaft; 31, first mounting hole; 32, intermediate section; 33, first mounting section; 34, second mounting section; 4, main frame; 41, first U-shaped frame; 42, arc-shaped frame; 43, second U-shaped frame; 44, rotating shaft; 5, rotating member; 51, rotating part; 52, mounting part; 521, second mounting hole; 53, convex block; 531, third mounting hole; 6, pushing member; 61, connecting plate; 62, side plate; 621, inclined surface; 63, swinging bar; 631, groove; 64, first connecting piece; 65, second connecting piece; 66, pushing block; 7, seat; 8, pedal mechanism. Detailed implementation manners

[0025] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0028] In the present invention, unless otherwise clearly defined and limited, the terms "mounting", "connecting", "coupling", "fixing", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Embodiment 1:

[0030] As shown Figures 1-3 in the figure, an automatic steering bicycle provided by an embodiment of the present invention will now be described. The automatic steering bicycle includes: a main shaft (not shown in the figure), a first rotating wheel 1, a second rotating wheel 2, a connecting shaft 3, and a main frame 4. Among them, the main shaft is rotatably arranged at the center of the first rotating wheel 1, the main frame 4 is fixed at both ends of the main shaft, there are two second rotating wheels 2, and the two second rotating wheels 2 are respectively rotatably arranged at both ends of the connecting shaft 3. The middle of the connecting shaft 3 is rotatably connected to the main frame 4 through a rotating member 5, and a pushing member 6 for pushing the connecting shaft 3 to turn as the main frame 4 turns is provided on the main frame 4.

[0031] In this embodiment, the automatic steering bicycle further includes a pedal mechanism 8, and the pedal mechanism 8 is used for a person to pedal to drive the first rotating wheel 1 to travel on the ground relative to the main shaft. The pedal mechanism 8, the main shaft, and the first rotating wheel 1 form a single-wheel bicycle structure, which can omit the chain and sprocket drive mechanism and reduce the occupied space of the bicycle. Among them, the single-wheel bicycle structure is the single-wheel bicycle structure in the prior art, and its specific structure and working principle will not be described here. Of course, in other embodiments, the pedal mechanism 8 can also use a chain and sprocket drive mechanism to drive the first rotating wheel 1 to rotate relative to the main shaft. Similarly, the chain and sprocket drive mechanism is the prior art and will not be described here.

[0032] In this embodiment, the bicycle is not provided with a handle, and the second rotating wheel 2 is the front wheel. Of course, in other embodiments, the first rotating wheel 1 is the front wheel. The direction of the bicycle is changed by changing the forward direction of the first rotating wheel 1 and then changing the forward direction of the second rotating wheel 2 through the rotating member 5 and the pushing member 6, so as to realize the steering of the bicycle. In this embodiment, the forward direction of the first rotating wheel 1 is deflected by the human body. Therefore, the change of the direction of the bicycle does not need to be controlled by hand, liberating the human hand.

[0033] An automatic steering bicycle provided by an embodiment of the present invention forms a three-wheel bicycle through the first rotating wheel 1 and two second rotating wheels 2, making the bicycle itself have balance, so that the bicycle will not tip over. Therefore, there is no need to use hands to control the balance of the bicycle. At the same time, the direction of the bicycle can be changed by changing the forward direction of the first rotating wheel 1 or the second rotating wheel 2, and the forward direction of the first rotating wheel 1 or the second rotating wheel 2 can be realized by deflecting the human body to drive the pushing member 6 to push the connecting shaft 3 to turn, ensuring the safety during the riding process. Therefore, the bicycle can be ridden with hands off.

[0034] As shown Figure 1As shown, in this embodiment, the main frame body 4 includes a first U-shaped frame body 41 and an arc-shaped frame body 42. The first U-shaped frame body 41 is vertically arranged and fixed at both ends of the main shaft. One end of the arc-shaped frame body 42 is fixed at the end of the first U-shaped frame body 41 away from the main shaft, and the other end is bent into a horizontal end and rotatably connected to the connecting shaft 3. A saddle 7 is provided on the first U-shaped frame body 41 for people to sit on, facilitating people to step on the pedal mechanism 8 to realize the movement of the bicycle. In this embodiment, the main frame body 4 is made of steel material, the arc-shaped frame body 42 is one-fourth of a circle, and the first U-shaped frame body 41 is vertically arranged. The purpose of such a setting is to simplify the structure of the main frame body 4 and ensure the load-bearing capacity of the main frame body 4.

[0035] As Figures 1-3 shown, in this embodiment, the rotating member 5 includes an integrally formed rotating part 51 and a mounting part 52. The mounting part 52 is connected to the main frame body 4. A first mounting hole 31 is provided on the connecting shaft 3, and the rotating part 51 is rotatably arranged in the first mounting hole 31. The rotating part 51 is a cylindrical structure and is directly inserted into the first mounting hole 31, which has the advantage of convenient installation.

[0036] As Figures 1-3 shown, in this embodiment, a rotating shaft 44 protrudes from the main frame body 4. A second mounting hole 521 for the rotating shaft 44 to pass through is provided on the mounting part 52. The pushing member 6 is fixedly arranged at the end of the rotating shaft 44 away from the main frame body 4, and the mounting part 52 is rotatably arranged on the rotating shaft 44. Specifically, the rotating shaft 44 is arranged on the horizontal end of the arc-shaped frame body 42 and is integrally formed with the arc-shaped frame body 42. The rotating shaft 44 is rotatably connected to the mounting part 52 through the second mounting hole 521. In this embodiment, the pushing member 6 also has the function of preventing the rotating shaft 44 from disengaging from the second mounting hole 521.

[0037] As Figures 1-3 shown, in this embodiment, the pushing member 6 includes a connecting plate 61 and two side plates 62 at both ends of the connecting plate 61. The two side plates 62 and the connecting plate 61 enclose a U shape. The connecting plate 61 is fixedly connected to the rotating shaft 44. One end of the two side plates 62 close to the main frame body 4 is set as an inclined surface 621, and the inclined surface 621 abuts against the connecting shaft 3. Specifically, the connecting plate 61 is first inserted into the rotating shaft 44 for positioning and then welded, so that the connecting plate 61 rotates synchronously with the rotating shaft 44. The mounting part 52 is located between the two side plates 62, and the two inclined surfaces 621 abut against the connecting shaft 3. When the first rotating wheel 1 turns, the main frame body 4 drives the rotating shaft 44 to horizontally rotate with the axis of the rotating part 51 as a fixed point. During the horizontal rotation of the rotating shaft 44, the pushing member 6 is driven to horizontally rotate. The side plate 62 of the pushing member 6 pushes the connecting shaft 3 to turn during the horizontal rotation process, so as to realize the turning of the second rotating wheel 2, thus completing the turning of the bicycle.

[0038] In this embodiment, when the main frame 4 deflects left and right (the left and right directions after a person rides on the bicycle), the rotating shaft 44 drives the pushing member 6 to rotate around the axis of the rotating shaft 44. At this time, during the rotation of the pushing member 6, the inclined surface 621 will abut against the connecting shaft 3, thereby giving the pushing member 6 a blocking force that restricts its continued rotation. This blocking force has the effect of preventing the main frame 4 from deflecting left and right, thus ensuring that the bicycle will not easily tip over.

[0039] In this embodiment, the rotating member 5, the pushing member 6, and the connecting shaft 3 are all made of steel material, which ensures the structural strength of the bicycle. Among them, the diameter of the first rotating wheel 1 is larger than that of the second rotating wheel 2, which not only reduces the production cost but also facilitates the change of the direction of the second rotating wheel 2.

[0040] Embodiment 2:

[0041] The difference between this embodiment and Embodiment 1 is that: the structure of the main frame 40 in this embodiment is different from the structure of the main frame 4 in Embodiment 1. The specific structure of the main frame 4 will be described below.

[0042] As Figure 4 and Figure 5 shown, in this embodiment, the main frame 40 includes: a first U-shaped frame body 41 and a second U-shaped frame body 43. The second U-shaped frame body 43 is horizontally arranged and fixed at both ends of the main shaft, so that the first rotating wheel 1 can roll relative to the second U-shaped frame body 43. The first U-shaped frame body 41 is vertically arranged on the second U-shaped frame body 43. A seat 7 is provided on the first U-shaped frame body 41 for people to sit on, facilitating people to step on the pedal mechanism 8 to realize the movement of the bicycle. The second U-shaped frame body 43 is rotatably connected to the connecting shaft 3 through the rotating member 5. Specifically, the rotating shaft 44 is arranged at one end of the second U-shaped frame body 43 far from the main shaft, and the extending direction of the rotating shaft 44 is horizontally arranged and perpendicular to the extending direction of the connecting shaft 3. In this embodiment, the first rotating wheel 1 is the front wheel, so when the first rotating wheel 1 is in motion, it can drive the second rotating wheel 2 to move synchronously through the rotating member 5 and the pushing member 6.

[0043] Embodiment 3:

[0044] The difference between this embodiment and Embodiment 2 is that: the structures of the connecting shaft 30, the rotating member 50, and the pushing member 60 in this embodiment are different from the structures of the connecting shaft 3, the rotating member 5, and the pushing member 6 in Embodiment 2 respectively. The specific structure of the main frame 40 will be described below.

[0045] As Figure 6 and Figure 7As shown, in this embodiment, the main frame 40 includes a first U-shaped frame 41 and a second U-shaped frame 43. The second U-shaped frame 43 is horizontally arranged and fixed at both ends of the main shaft, so that the first rotating wheel 1 can roll relative to the second U-shaped frame 43. The first U-shaped frame 41 is vertically arranged on the second U-shaped frame 43. A seat 7 is provided on the first U-shaped frame 41 for people to sit on, facilitating people to step on the pedal mechanism 8 to realize the movement of the bicycle.

[0046] In this embodiment, the connecting shaft 30 includes: an intermediate section 32, and a first mounting section 33 and a second mounting section 34 respectively hinged to both ends of the intermediate section 32. One of the second rotating wheels 2 is rotatably mounted on the first mounting section 33, and the other second rotating wheel 2 is rotatably mounted on the second mounting section 34. This enables the second rotating wheel 2 to swing left and right relative to the intermediate section 32, preparing for the second rotating wheel 2 to turn synchronously with the first rotating wheel 1.

[0047] As Figure 6 and Figure 7 shown, in this embodiment, the rotating member 50 includes: a convex block 53 protruding from the connecting shaft 3, and a rotating shaft 44 provided on the main frame 4 and rotatably connected to the convex block 53. The extending direction of the rotating shaft 44 is perpendicular to the extending direction of the connecting shaft 3. Specifically, the convex block 53 protrudes from the middle of the intermediate section 32, and the convex block 53 is integrally formed or welded with the intermediate section 32. The rotating shaft 44 is provided at one end of the second U-shaped frame 43 away from the main shaft, and the extending direction of the rotating shaft 44 is horizontally arranged. A third mounting hole 531 is provided on the convex block 53, and the rotating shaft 44 passes through the third mounting hole 531 and is rotatably connected to the convex block 53.

[0048] As Figure 6 and Figure 7 described, the pushing member 60 includes: a swinging bar 63 arranged in parallel and spaced from the intermediate section 32, a first connecting piece 64 with one end hinged to one end of the swinging bar 63 and the other end fixed to the first mounting section 33, a second connecting piece 65 with one end hinged to the other end of the swinging bar 63 and the other end fixed to the second mounting section 34, and a pushing block 66 fixed on the rotating shaft 44 and used to push the swinging bar 63 to swing left and right. Specifically, the intermediate section 32, the first connecting piece 64, the swinging bar 63 and the second connecting piece 65 are hinged into a parallelogram structure, and the two second rotating wheels 2 are respectively arranged at two corners at both ends of the intermediate section 32. When the rotating shaft 44 rotates to drive the pushing block 66 to swing left or right, the pushing block 66 pushes the swinging bar 63 to move left or right. During the movement, the first mounting section 33 and the second mounting section 34 are driven to deflect synchronously through the first connecting piece 64 and the second connecting piece 65, so as to realize the synchronous deflection of the two second rotating wheels 2 and realize the steering of the bicycle.

[0049] As Figure 7As shown, in this embodiment, a groove 631 is provided on the swing bar 63, and the push block 66 is received in the groove 631. This setting has the advantage of convenient installation. Among them, the push block 66 has the function of restricting the convex block 53 from disengaging from the rotating shaft 44, and when the push block 66 and the main frame 40 remain stationary, it can also restrict the second rotating wheel 2 from turning. In other embodiments, the push block 66 is hinged to the swing bar 63, and the push block 66 can also drive the swing bar 63 to move left and right.

[0050] As Figure 6 and Figure 7 shown, in this embodiment, the first connecting piece 64 and the first mounting section 33 are integrally formed and coaxially hinged to the intermediate section 32, and the second connecting piece 65 and the second mounting section 34 are integrally formed and coaxially hinged to the intermediate section 32. Specifically, the first connecting piece 64 and the first mounting section 33 are in a right-angled structure and the right-angled part is hinged to the intermediate section 32, and the second connecting piece 65 and the second mounting section 34 are in a right-angled structure and the right-angled part is hinged to the intermediate section 32, which can save effort.

[0051] The automatic-steering bicycle provided by the embodiment of the present invention has a simple and compact structure, occupies a small space, reduces the production cost, will not have the situation of chain disengagement, reduces the failure rate, reduces the maintenance cost, greatly reduces the resource consumption, and can be ridden with hands off, facilitating people to pick up objects.

[0052] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatically steerable bicycle, characterized in that, Comprising: A main shaft, a first rotating wheel, a second rotating wheel, a connecting shaft and a main frame body. The main shaft is rotatably arranged at the center of the first rotating wheel. The main frame body is fixed at both ends of the main shaft. There are two second rotating wheels, and the two second rotating wheels are respectively rotatably arranged at both ends of the connecting shaft. The connecting shaft is rotatably connected to the main frame body through a rotating member. A pushing member for pushing the connecting shaft to turn along with the turning of the main frame body is arranged on the main frame body; A rotating shaft protrudes from the main frame body. The pushing member has an inclined surface, and the pushing member is fixed at one end of the rotating shaft away from the main frame body so that the inclined surface abuts against the connecting shaft; The rotating member is rotatably connected to the rotating shaft and is also rotatably connected to the connecting shaft.

2. The automatic steering bicycle according to claim 1, characterized in that, The middle of the connecting shaft is rotatably connected to the main frame body through the rotating member. The rotating member includes a rotating part and a mounting part. The mounting part is connected to the rotating shaft of the main frame body. A first mounting hole is provided on the connecting shaft, and the rotating part is rotatably arranged in the first mounting hole.

3. The automatic steering bicycle according to claim 2, wherein A second mounting hole for the rotating shaft to pass through is provided on the mounting part, and the mounting part is rotatably arranged on the rotating shaft.

4. The automatic steering bicycle according to claim 3, wherein, The pushing member includes: a connecting plate and two side plates at both ends of the connecting plate. The two side plates and the connecting plate enclose a U shape. The connecting plate is fixedly connected to the rotating shaft, and the inclined surface is arranged at one end of the two side plates close to the main frame body.

5. The automatic steering bicycle according to any one of claims 1-4, characterized in that The main frame body includes a first U-shaped frame body and an arc-shaped frame body. The first U-shaped frame body is vertically arranged and fixed at both ends of the main shaft. One end of the arc-shaped frame body is fixed at one end of the first U-shaped frame body away from the main shaft, and the other end is bent into a horizontal end and is rotatably connected to the connecting shaft. A seat is provided on the first U-shaped frame body; or, the main frame body includes a first U-shaped frame body and a second U-shaped frame body. The second U-shaped frame body is horizontally arranged and fixed at both ends of the main shaft. The first U-shaped frame body is vertically arranged on the second U-shaped frame body. A seat is provided on the first U-shaped frame body, and the second U-shaped frame body is rotatably connected to the connecting shaft; The automatic-steering bicycle further includes a pedal mechanism.

6. An automatically steerable bicycle, characterized in that, Comprising: A main shaft, a first rotating wheel, a second rotating wheel, a connecting shaft and a main frame body. The main shaft is rotatably arranged at the center of the first rotating wheel. The main frame body is fixed at both ends of the main shaft. There are two second rotating wheels, and the two second rotating wheels are respectively rotatably arranged at both ends of the connecting shaft. The connecting shaft is rotatably connected to the main frame body through a rotating member. A pushing member for pushing the connecting shaft to turn along with the turning of the main frame body is arranged on the main frame body; The rotating member includes a rotating shaft protruding from the main frame body, and the rotating shaft is rotatably connected to the connecting shaft; The connecting shaft includes: a middle section, and a first mounting section and a second mounting section respectively hinged to both ends of the middle section. One second rotating wheel is rotatably mounted on the first mounting section, and the other second rotating wheel is rotatably mounted on the second mounting section; The driving member includes a swing bar, a first connecting piece, a second connecting piece and a driving block. The driving block is fixed on the rotating shaft and is used to push the swing bar to swing left and right. One end of the first connecting piece is hinged to one end of the swing bar, and the other end is fixedly connected to the first mounting section. One end of the second connecting piece is hinged to the other end of the swing bar, and the other end is fixedly connected to the second mounting section; The swing bar is arranged parallel to and spaced from the middle section. A groove is provided on the swing bar, and the driving block is accommodated in the groove.

7. An automatic steering bicycle according to claim 6, wherein The rotating member further includes a convex block protruding from the connecting shaft. The rotating shaft is rotatably connected to the convex block, and the extending direction of the rotating shaft is perpendicular to the extending direction of the connecting shaft.

8. An automatically steering bicycle according to claim 6, wherein, The first connecting piece and the first mounting section are integrally formed and coaxially hinged to the middle section. The second connecting piece and the second mounting section are integrally formed and coaxially hinged to the middle section.

9. An automatic-steering bicycle according to any one of claims 6 to 8, characterized in that, The main frame body includes a first U-shaped frame body and an arc-shaped frame body. The first U-shaped frame body is vertically arranged and fixed at both ends of the main shaft. One end of the arc-shaped frame body is fixed at the end of the first U-shaped frame body far from the main shaft, and the other end is bent into a horizontal end and rotatably connected to the connecting shaft. A seat is provided on the first U-shaped frame body; alternatively, the main frame body includes a first U-shaped frame body and a second U-shaped frame body. The second U-shaped frame body is horizontally arranged and fixed at both ends of the main shaft. The first U-shaped frame body is vertically arranged on the second U-shaped frame body. A seat is provided on the first U-shaped frame body, and the second U-shaped frame body is rotatably connected to the connecting shaft; The automatic steering bicycle further includes a pedal mechanism.

Images