Self-adaptive adjusting different-wheel frame structure

Abstract

The invention belongs to the technical field of frame structures and discloses a self-adaptive-adjustment different-wheel frame structure which comprises a main frame mechanism and a Z-shaped frame mechanism, the Z-shaped frame mechanism used for improving balance and steering stability is rotationally arranged on the main frame mechanism, and the Z-shaped frame mechanism is arranged on the main frame mechanism. The main frame mechanism is further fixedly connected with a bearing mechanism used for increasing the standing area. Through the arrangement of the main frame mechanism, the Z-shaped frame mechanism and the front wheel mechanism, wheels of the device can sequentially pass through an obstacle, so that the situation that two rear wheels lift the tail end of a vehicle body at the same time is avoided, the negative degree of the vehicle is reduced, vibration of the device is effectively reduced, and the damping effect of the device is further improved through a torsional spring and a damping spring; and two wheels at the rear part of the device can move up and down, so that three wheels of the device can be always in contact with the ground when the device is inclined laterally, the stability of the device is improved, and the device can be effectively prevented from being overturned.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle frame structures, in particular to an adaptively adjustable three-wheel vehicle frame structure. Background Art

[0002] The frame structures of bicycles, tricycles and scooters currently available on the market have their own characteristics. Bicycle frames usually consist of a head tube, top tube, down tube, seat tube, etc. as main components, and are made of a variety of materials, including aluminum alloy, carbon fiber, steel and titanium alloy. Common structural forms include diamond frames and special-shaped frames, which can meet different riding needs; tricycle frames are generally made of steel, with main beams, sub-beams, axle mounting frames, etc. as main structures. They can be divided into various types according to the layout of the front and rear wheels, and are mostly suitable for freight or passenger purposes; scooter frames are relatively simple, generally composed of pedals, axles and uprights, and are often made of aluminum alloy or plastic. They are light and flexible, easy to carry and use, and are mainly used for short-distance travel or leisure sports.

[0003] These types of frames can be roughly divided into two-wheeled and three-wheeled types. The two wheels of a two-wheeled vehicle travel on the same line, and the support surface is narrow. The tilting angle can be adjusted at will according to the centrifugal force generated by the speed and turning of the vehicle during travel to ensure that the vehicle is in a balanced state. Its advantages are: flexibility and adaptability to a variety of speeds and road conditions. Its disadvantages are: this balance is easily destroyed and needs to be adjusted in time, and it is difficult to control. In addition, due to the small support surface, the vehicle is prone to side slipping, falling and other uncontrolled phenomena. Tricycles are generally one front and two rear (positive three-wheel) or two front and one rear (reverse three-wheel) structures, in the form of an isosceles triangle, with a large support surface, stable structure, and cannot be tipped over. Its advantages are: due to the large support surface and stable structure, large cargo capacity, and less difficulty in controlling low-speed driving. Its disadvantages are: difficulty in controlling high-speed driving, because the body cannot tip over to offset the centrifugal force generated during turning, and it is easy to roll over. Adding a special roll system can effectively overcome the shortcomings of tricycles, but there are problems of complex structure and high cost.

[0004] Therefore, there is an urgent need to provide a self-adaptive three-wheeled vehicle frame structure to solve the above problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a self-adjustable tricycle frame structure.

[0006] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide an adaptively adjustable tricycle frame structure, comprising a main frame mechanism and a Z-frame mechanism, wherein the main frame mechanism is rotatably provided with a Z-frame mechanism for improving balance and steering stability, and the main frame mechanism is also fixedly connected with a bearing mechanism for increasing a standing area;

[0007] The main frame mechanism is also rotatably provided with a handlebar mechanism;

[0008] A front wheel mechanism for assisting travel and reducing vibration is welded and fixed to the bottom end of the handlebar mechanism.

[0009] The present invention is further configured as follows: the main frame mechanism comprises a frame body, a sleeve is integrally fixed to one end of the frame body, a torsion spring is arranged outside the sleeve, and a rotating sleeve is integrally fixed to the other end of the frame body.

[0010] Through the above technical solution, the frame, sleeve and rotating sleeve can all be made of stainless steel or alloy, and the connection method can be one-piece casting or fixed by more solid welding methods such as laser welding and argon arc welding.

[0011] The present invention is further configured as follows: the Z-frame mechanism includes a rotating rod rotatably arranged inside the sleeve, one end of the rotating rod is bolted to a square tube 1, a fixing bolt is passed through and fixed on the square tube 1, and the end of the square tube 1 is rotatably connected to a rear wheel.

[0012] Through the above technical solution, the rotating rod is a circular tube structure, and its outer diameter is slightly smaller than the inner diameter of the sleeve, so as to achieve a rotating connection with the sleeve, and grease can be used at the contact point to reduce the rotational friction. The square tube and the rotating rod can be doubly fixed by fixing bolts and welding, so as to improve the connection strength. The rear wheel can be made of nylon or stainless steel, and the tire can be an inflatable tire or a solid rubber tire.

[0013] The present invention is further configured as follows: a second square tube is bolted and fixed to the other end of the rotating rod, the orientation of the second square tube is opposite to that of the first square tube, and the end of the second square tube is rotatably connected to a middle wheel.

[0014] Through the above technical solution, the structure and size of the middle wheel and the rear wheel are the same, the fixing method of the square tube 2 and the rotating rod is the same as that of the square tube 1, the square tube 1, the rotating rod and the square tube 2 together form a Z-shaped structure, and the ends of the torsion spring are fixed to the square tube 1 and the square tube 2 respectively. When the device passes through an obstacle during driving, since the middle wheel and the rear wheel can move with each other through leverage, and since the front and rear positions of the middle wheel and the rear wheel are different, the middle wheel and the rear wheel can pass through the obstacle one after another instead of at the same time. Since the two rollers are not lifted by the obstacle at the same time, the ups and downs height of the rear end of the vehicle body is effectively reduced, thereby improving the shock absorption effect of the device, and the torsion spring can absorb and dissipate energy through torsional deformation, further improving the shock absorption effect of the device, and can also provide elastic restoring force for the Z-shaped frame mechanism, so that the Z-shaped frame mechanism can be maintained at a specified position under non-stress state.

[0015] The present invention is further configured as follows: the bearing mechanism comprises a pedal fixedly mounted on the top of the frame, and a protective cover is integrally fixed to one end of the pedal.

[0016] Through the above technical solution, the pedal and the frame can be fixed by welding, riveting or screwing. The pedal has a structure that is narrow at both ends and wide in the middle. The middle area of ​​the top is larger, which can provide a larger standing area for the user. The narrowing structure at both ends can reduce the wind resistance of the device to a certain extent. On the one hand, the protective cover can prevent the user's feet from moving too far backward and stepping on empty air during use. On the other hand, it can also effectively prevent the user from accidentally stepping on the Z-shaped frame mechanism when the user climbs onto the device.

[0017] The present invention is further configured as follows: the handlebar mechanism comprises a sleeve rod rotatably arranged inside a rotating sleeve, a limiting ring is integrally fixed to an outer wall of the sleeve rod, and an adjusting lock buckle is also installed on the sleeve rod.

[0018] Through the above technical solution, the rotating sleeve is slightly tilted toward the pedal, and the sleeve rod is also tilted toward the pedal accordingly, so that the handle is closer to the user, which is ergonomic. The top of the sleeve rod is petal-shaped, and the adjustment lock is a lifting lock for scooters. When the adjustment lock is locked, the top of the sleeve rod will tighten.

[0019] The present invention is further configured as follows: an inner rod is slidably arranged inside the sleeve rod, a handle is welded and fixed to the top end of the inner rod, and anti-slip sleeves are fixed to the outside of both ends of the handle.

[0020] Through the above technical solution, when the user loosens the adjustment lock, the inner rod can slide up and down along the sleeve rod. When the user locks the adjustment lock, the sleeve rod will clamp the inner rod, thereby realizing the height adjustment of the handle, so that the device can be suitable for users of different heights. The anti-slip sleeve can be made of rubber, silicone or foam, which can effectively prevent the user's hand from sliding, improve the grip, and also improve the user's grip comfort.

[0021] The present invention is further configured as follows: the front wheel mechanism includes a connecting seat welded and fixed to the bottom end of the sleeve rod, the bottom end of the connecting seat is integrally fixed with a wheel cover, and the bottom end of the wheel cover is integrally fixed with a connecting frame.

[0022] Through the above technical solution, the wheel cover and the connecting frame can not only provide support and protection for the front wheel, but also play a mud barrier effect, thereby effectively preventing mud and sewage from splashing onto the user's legs during driving in rainy days.

[0023] The present invention is further configured as follows: the front wheel body is rotatably connected to the inner side of the connecting frame, and a shock absorbing spring is welded and fixed to the top end of the connecting seat.

[0024] Through the above technical solution, the front wheel body, the rear wheel and the middle wheel together form an asymmetric triangular support structure, which effectively improves the stability of the device. When the device generates a certain inclination angle due to turning, since the rear wheel and the middle wheel can move up and down, the rear wheel and the middle wheel can always be close to the ground, further improving the stability of the device during driving. Through this structure, the device can offset the centrifugal force and roll force generated during turning by tilting toward the inside of the curve when turning, thereby reducing the possibility of the device tipping over when turning.

[0025] The beneficial effects of the present invention are as follows:

[0026] 1. The present invention enables the wheels of the device to pass through obstacles one after another through the arrangement of the main frame mechanism, the Z-frame mechanism and the front wheel mechanism, thereby preventing the two rear wheels from lifting the rear end of the vehicle body at the same time, reducing the bullying degree of the vehicle, effectively reducing the vibration of the device, and further improving its shock absorption effect through the torsion spring and the shock absorbing spring;

[0027] 2. The present invention arranges the main frame mechanism and the Z-frame mechanism so that the two rear wheels of the device can move up and down, thereby enabling the device to always keep three wheels touching the ground when tilting, thereby improving the stability of the device and effectively preventing the device from tipping over. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0029] Figure 2 It is a structural diagram of the main frame mechanism of the present invention;

[0030] Figure 3 It is a structural diagram of the Z-frame mechanism of the present invention;

[0031] Figure 4 It is a structural diagram of the bearing mechanism of the present invention;

[0032] Figure 5 It is a structural diagram of the handlebar mechanism of the present invention;

[0033] Figure 6 It is a structural diagram of the front wheel mechanism of the present invention;

[0034] Figure 7 It is a structural diagram of the main frame mechanism and the Z-frame mechanism of the present invention in a semi-tilted state;

[0035] Figure 8 It is a structural diagram of the main frame mechanism and the Z-frame mechanism of the present invention in a fully tilted state.

[0036] In the figure: 1. main frame mechanism; 101. frame body; 102. sleeve; 103. torsion spring; 104. rotating sleeve; 2. Z-frame mechanism; 201. rotating rod; 202. square tube one; 203. fixing bolt; 204. rear wheel; 205. square tube two; 206. middle wheel; 3. bearing mechanism; 301. pedal; 302. protective cover; 4. handlebar mechanism; 401. sleeve rod; 402. limiting ring; 403. adjusting lock buckle; 404. inner rod; 405. handle; 406. anti-slip sleeve; 5. front wheel mechanism; 501. connecting seat; 502. wheel cover; 503. connecting frame; 504. front wheel body; 505. shock-absorbing spring. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0038] See also Figure 1-Figure 8 A self-adaptive three-wheeled vehicle frame structure includes a main frame mechanism 1 and a Z-frame mechanism 2. The main frame mechanism 1 includes a frame body 101. A sleeve 102 is integrally fixed to one end of the frame body 101. A torsion spring 103 is arranged on the outside of the sleeve 102. A rotating sleeve 104 is integrally fixed to the other end of the frame body 101. The frame body 101, the sleeve 102 and the rotating sleeve 104 can all be made of stainless steel or alloy. The connection method can be one-piece casting or laser welding, argon arc welding or other relatively firm welding methods. The main frame mechanism 1 can be in various forms, such as flat plate type, seat type, straddle type, curved beam type, etc.

[0039] like Figure 1 and Figure 3As shown, a Z-shaped frame mechanism 2 for improving balance and steering stability is rotatably arranged on the main frame mechanism 1, and the Z-shaped frame mechanism 2 includes a rotating rod 201 rotatably arranged inside the sleeve 102, one end of the rotating rod 201 is bolted to a square tube 1 202, and a fixing bolt 203 is fixed through the square tube 1 202, and the end of the square tube 1 202 is rotatably connected to a rear wheel 204, and the other end of the rotating rod 201 is bolted to a square tube 205, and the direction of the square tube 205 is opposite to that of the square tube 1 202. The end of 05 is rotatably connected with the middle wheel 206. The rotating rod 201 is a round tube structure, and its outer diameter is slightly smaller than the inner diameter of the sleeve 102, so as to realize the rotation connection with the sleeve 102. Grease can be used at the contact point to reduce the rotation friction. The square tube 202 and the rotating rod 201 can be doubly fixed by fixing bolts 203 and welding to improve the connection strength. The rear wheel 204 can be made of nylon or stainless steel, and the tire can be an inflatable tire or a solid rubber tire. The structure of the middle wheel 206 and the rear wheel 204 , the sizes are the same, the fixing method of the square tube 205 and the rotating rod 201 is the same as that of the square tube 1 202, the square tube 1 202, the rotating rod 201 and the square tube 205 together form a Z-shaped structure, and the ends of the torsion spring 103 are fixed to the square tube 1 202 and the square tube 205 respectively. When the device passes through an obstacle during driving, the middle wheel 206 and the rear wheel 204 can move with each other through a lever, and because the front and rear positions of the middle wheel 206 and the rear wheel 204 are different, the middle wheel 206 and the rear wheel 204 are 4 can pass through obstacles one by one instead of simultaneously. Since the two rollers will not be lifted by the obstacles at the same time, the ups and downs height of the rear end of the vehicle body is effectively reduced, thereby improving the shock absorption effect of the device. The torsion spring 103 can absorb and dissipate energy through torsional deformation, further improving the shock absorption effect of the device, and can also provide elastic restoring force for the Z-frame mechanism 2, so that the Z-frame mechanism 2 can maintain balance in a non-stressed state, thereby allowing the device to remain upright in a no-load state.

[0040] like Figure 1 and Figure 4 As shown, the main frame mechanism 1 is also fixedly connected to a supporting mechanism 3 for increasing the standing area, and the supporting mechanism 3 includes a pedal 301 fixedly installed on the top of the frame 101, and a protective cover 302 is integrally fixed to one end of the pedal 301. The pedal 301 and the frame 101 can be welded, riveted or screwed. The pedal 301 is a structure that is narrow at both ends and wide in the middle. The middle area of ​​the top is larger, which can provide a larger standing area for the user, and the narrowing structure at both ends can reduce the wind resistance of the device to a certain extent. On the one hand, the protective cover 302 can prevent the user's feet from moving too far backward and stepping on air during use, and on the other hand, it can also effectively prevent the user from accidentally stepping on the Z-shaped frame mechanism 2 when the user climbs onto the device.

[0041] like Figure 1and Figure 5 As shown, the main frame mechanism 1 is also rotatably provided with a handle mechanism 4, which includes a sleeve rod 401 rotatably provided inside the rotating sleeve 104, a limiting ring 402 is integrally fixed to the outer wall of the sleeve rod 401, and an adjustment lock buckle 403 is also installed on the sleeve rod 401, an inner rod 404 is slidably provided inside the sleeve rod 401, a handle 405 is welded and fixed to the top of the inner rod 404, and anti-slip sleeves 406 are fixed to the outside of both ends of the handle 405, the rotating sleeve 104 is slightly inclined toward the pedal 301, and the sleeve rod 401 is also correspondingly inclined toward the pedal 301, so that the handle 405 is closer to the user, which is ergonomic. The top of the sleeve rod 401 is petal-shaped, and the adjustment lock buckle 403 is a lifting lock buckle for a scooter. When the adjustment lock buckle 403 is locked, the top of the sleeve rod 401 will be tightened. When the user loosens the adjustment lock buckle 403, the inner rod 404 can slide up and down along the sleeve rod 401. When the user locks the adjustment lock buckle 403, the sleeve rod 401 will clamp the inner rod 404, thereby realizing the height adjustment of the handle 405, so that the device can be suitable for users of different heights. The anti-slip sleeve 406 can be made of rubber, silicone or foam, etc., which can effectively prevent the user's hand from sliding, improve the grip, and also improve the user's grip comfort.

[0042] like Figure 1 , Figure 6 , Figure 7 and Figure 8As shown, a front wheel mechanism 5 for assisting travel and reducing vibration is welded and fixed to the bottom end of the handlebar mechanism 4, and the front wheel mechanism 5 includes a connecting seat 501 welded and fixed to the bottom end of the sleeve rod 401, a wheel cover 502 is fixed to the bottom end of the connecting seat 501, and a connecting frame 503 is fixed to the bottom end of the wheel cover 502, and a front wheel body 504 is rotatably connected to the inner side of the connecting frame 503, and a shock absorbing spring 505 is welded and fixed to the top end of the connecting seat 501. The wheel cover 502 and the connecting frame 503 can not only provide support and protection for the front wheel, but also play a mud-blocking effect, thereby effectively preventing mud and sewage from splashing onto the user's legs during driving in rainy days. The front wheel body 504, the rear wheel 204 and the middle wheel 206 together form an asymmetric triangular support structure, which effectively improves the stability of the device. When the device turns, its body will tilt to one side, and at this time the body is supported by the sleeve 102 forces one end of the rotating rod 201 to move downward and the other end to move upward, and the Z-frame mechanism 2 is passively flipped, the square tube 1 202 will flip upward or downward, and the square tube 205 will flip in the opposite direction of the square tube 1 202. Since the rear wheel 204 at the end of the square tube 1 202 and the middle wheel 206 at the end of the square tube 205 are always close to the ground during steering, the front wheel body 504, the middle wheel 206 and the rear wheel 204 always form a triangular support structure with a close surface during steering, which further improves the stability of the device during driving. Through this structure, the device can offset the centrifugal force and roll force generated during turning by tilting toward the inside of the curve when turning, thereby reducing the possibility of the device tipping over when turning. When the vehicle body is restored to an upright state from the tilted state, the Z-frame mechanism 2 rotates in the opposite direction mentioned above, so that the three wheels can also be guaranteed to touch the ground during the process of the device restoring to an upright state.

[0043] When the present invention is in use, the structure can be applied to vehicles such as scooters, bicycles, and electric vehicles. When the structure is applied to electric vehicles, its driving structure can be installed on the front wheel body 504, the middle wheel 206, or the rear wheel 204 according to the usage situation. It can also adopt the front-middle, middle-rear, or three-wheel drive form. When driving, the user can step on the pedal 301 and hold the handle 405 with both hands to operate the device. During driving, the Z-frame mechanism 2 allows the middle wheel 206 and the rear wheel 204 of the device to be pulled apart by a certain wheelbase, so that the three wheels of the device can pass obstacles separately in sequence, effectively reducing the undulation of the vehicle body and the vibration of the vehicle body, and further improving its shock absorption effect through the torsion spring 103 and the shock-absorbing spring 505. Since the device can tilt when turning and always keep the three wheels touching the ground, the structure has both the roll steering flexibility of a two-wheeled vehicle and the support stability of a three-wheeled vehicle, thereby effectively improving the maneuverability and safety of the device, bringing about a wide range of application prospects.

[0044] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An adaptively adjustable three-wheeled vehicle frame structure, comprising a main frame mechanism (1) and a Z-frame mechanism (2), characterized in that: A Z-shaped frame mechanism (2) for improving balance and steering stability is rotatably arranged on the main frame mechanism (1), and a bearing mechanism (3) for increasing a standing area is also fixedly connected to the main frame mechanism (1); The main frame mechanism (1) is also rotatably provided with a handle mechanism (4); A front wheel mechanism (5) for assisting travel and reducing vibration is welded and fixed to the bottom end of the handlebar mechanism (4).

2. The adaptively adjustable three-wheeled vehicle frame structure according to claim 1, characterized in that: The main frame mechanism (1) comprises a frame body (101), a sleeve (102) is integrally fixed to one end of the frame body (101), a torsion spring (103) is arranged outside the sleeve (102), and a rotating sleeve (104) is integrally fixed to the other end of the frame body (101).

3. The adaptively adjustable three-wheeled vehicle frame structure according to claim 2, characterized in that: The Z-shaped frame mechanism (2) comprises a rotating rod (201) rotatably arranged inside the sleeve (102); one end of the rotating rod (201) is bolted to a square tube (202); a fixing bolt (203) is passed through and fixed to the square tube (202); and the end of the square tube (202) is rotatably connected to a rear wheel (204).

4. The adaptively adjustable three-wheeled vehicle frame structure according to claim 3, characterized in that: The other end of the rotating rod (201) is bolted and fixed with a second square tube (205), the orientation of the second square tube (205) being opposite to that of the first square tube (202), and the end of the second square tube (205) is rotatably connected with a middle wheel (206).

5. The adaptively adjustable three-wheeled vehicle frame structure according to claim 2, characterized in that: The bearing mechanism (3) comprises a pedal (301) fixedly mounted on the top of the frame (101), and a protective cover (302) is integrally fixed to one end of the pedal (301).

6. The adaptively adjustable three-wheeled vehicle frame structure according to claim 2, characterized in that: The handlebar mechanism (4) comprises a sleeve rod (401) rotatably arranged inside a rotating sleeve (104), a limiting ring (402) being integrally fixed to the outer wall of the sleeve rod (401), and an adjustment lock buckle (403) is also mounted on the sleeve rod (401).

7. The adaptively adjustable three-wheeled vehicle frame structure according to claim 6, characterized in that: An inner rod (404) is slidably arranged inside the sleeve rod (401), a handle (405) is welded and fixed to the top end of the inner rod (404), and anti-slip sleeves (406) are fixed to the outside of both ends of the handle (405).

8. The adaptively adjustable three-wheeled vehicle frame structure according to claim 6, characterized in that: The front wheel mechanism (5) comprises a connecting seat (501) welded and fixed to the bottom end of the sleeve rod (401), a wheel cover (502) is integrally fixed to the bottom end of the connecting seat (501), and a connecting frame (503) is integrally fixed to the bottom end of the wheel cover (502).

9. The adaptively adjustable three-wheeled vehicle frame structure according to claim 8, characterized in that: The front wheel body (504) is rotatably connected to the inner side of the connecting frame (503), and a shock absorbing spring (505) is welded and fixed to the top end of the connecting seat (501).

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