CN106515954B

CN106515954B - Tricycle with double front wheels

Info

Publication number: CN106515954B
Application number: CN201611030778.2A
Authority: CN
Inventors: 史玉胜
Original assignee: Suzhou Sudie Technology Co ltd
Current assignee: Suzhou Sudie Technology Co ltd
Priority date: 2016-11-16
Filing date: 2016-11-16
Publication date: 2022-02-15
Anticipated expiration: 2036-11-16
Also published as: CN106515954A

Abstract

The invention discloses a tricycle with double front wheels, which comprises a frame, two front wheels and a rear wheel, wherein the two front wheels and the rear wheel are positioned on the front side and the rear side of the frame; under the steering state, the front wheels and the rear wheels are in a non-vertical state with the ground. The invention has the advantages of exquisite design and simple structure, and is beneficial to reducing the steering radius of the whole vehicle by enabling the front wheel and the rear wheel to simultaneously generate the arrangement of tilting towards the steering direction in the steering state, thereby increasing the flexibility, the stability and the smoothness of steering, greatly improving the steering safety of the vehicle in a high-speed state and improving the driving safety.

Description

Tricycle with double front wheels

Technical Field

The invention relates to a tricycle, in particular to a tricycle with double front wheels.

Background

The tricycle, as the name suggests, including the electric motor car or bicycle or the car of three wheel, because it has a wheel and ground contact more for the bicycle, on the wet slippery road surface that easily produces the sideslip, has very unique stability advantage, reduces the possibility that the person of riding the person sideslips and fall down by a wide margin, under complicated topography earth's surface environment, the security of traveling has a great promotion than the two-wheeled car. Most of the three-wheeled vehicles on the market at present have a front wheel and two rear wheels, as shown in chinese patents CN201210089652.8 and CN 201480014552.6.

Of course, there are also special inverted tricycles having two front wheels and one rear wheel, as shown in chinese patents CN200610170204.5 and CN201510774236.5, the rear wheel serving as a driving wheel and the front wheel serving as a steering wheel.

However, the steering structure of the tricycle and the rear main body support are fixed and cannot move relatively, and the steering radius of the whole tricycle is increased and the tricycle is difficult to steer in a narrow space when the tricycle steers due to the limitation of the structure of the main body support; if the steering angle of the front wheels is increased, the situation that the steering angle is too large and an accident happens can be caused.

In addition, because the front wheels do not roll when the vehicle is steered in the prior art, the vehicle is easy to generate a rollover accident at a high speed.

In addition, the whole structure of the prior art is complex, and particularly the structure of the double front wheel area is not suitable for mass production.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provide a tricycle with double front wheels, wherein the turning performance of the tricycle is greatly improved.

The purpose of the invention is realized by the following technical scheme:

a tricycle with double front wheels comprises a frame, two front wheels and a rear wheel which are positioned at the front side and the rear side of the frame,

under a normal state, the two front wheels and the rear wheel are vertical to the ground;

under the steering state, the front wheels and the rear wheels are in a non-vertical state with the ground.

Preferably, the tricycle with two front wheels, wherein: the frame comprises a steering mechanism, a main frame and an anchor-shaped connecting frame, wherein the main frame and the anchor-shaped connecting frame are respectively connected with the steering mechanism, the steering mechanism is provided with the front wheels and drives the front wheels to steer and incline when steering, the tail part of the main frame is provided with the rear wheels, the front ends of the rear wheels are connected with the anchor-shaped connecting frame in an inserting mode, and the main frame can perform torsion motion of a limited angle relative to the anchor-shaped connecting frame and drive the rear wheels to incline.

Preferably, the tricycle with two front wheels, wherein: the steering mechanism comprises a steering driving mechanism fixedly connected with the main frame, the steering driving mechanism is in pivot connection with one ends of two symmetrically-arranged pull rods, the other ends of the two pull rods are respectively in pivot connection with an overturning part for mounting front wheels, the two overturning parts are respectively in pivot connection with one end of the anchor-shaped connecting frame through a rotating shaft, and the overturning parts rotate around the rotating shaft under the acting force of the pull rods.

Preferably, the tricycle with two front wheels, wherein: the steering driving mechanism comprises a head support pipe connected with the main frame, a telescopic pipe is further arranged in the head support pipe in a sliding mode, a faucet handle is fixed to the upper end of the telescopic pipe and fixed or loosened with a steering pipe capable of rotating in the head support pipe through a fastener, a fixing piece is fixed to the bottom end of the steering pipe, and the fixing piece is connected with a connecting piece in a pivot mode.

Preferably, the tricycle with two front wheels, wherein: the connecting piece comprises symmetrical two half-type structures which are spliced together through a round pin, two ends of the round pin extend into the fixing piece, opposite ends of the two pull rods are respectively pivoted on one half of the two half-type structures, and the ground height of one end, connected with the connecting piece pivot, of each pull rod is smaller than the ground height of one end, connected with the overturning piece pivot, of each pull rod.

Preferably, the tricycle with two front wheels, wherein: the overturning piece comprises two first pivot holes with height difference, the rotating shaft penetrates through the two first pivot holes, and the anchor-shaped connecting frame is positioned between the two first pivot holes; the turnover piece also comprises a second pivot hole for mounting a front wheel and a third pivot hole for gluing one end of the pull rod; the second pivot hole and the third pivot hole are located on the same side of an axis formed by the two first pivot holes.

Preferably, the tricycle with two front wheels, wherein: the main frame and the anchor-shaped connecting frame are connected into a whole through a torsion spring, one end of the torsion spring is fixed in an inner cavity of the anchor-shaped connecting frame, and the other end of the torsion spring is fixed in the main frame; when the steering wheel is turned, the torsion spring is twisted along with the main frame; and after the steering, the torsion spring drives the main frame to reversely twist.

Preferably, the tricycle with two front wheels, wherein: the torsion spring comprises a first fixed end in a right angle or a round angle and a second fixed end in a U-shaped groove, and the top area of the first fixed end is embedded into a clamping groove in the inner cavity of the anchor-shaped connecting frame and is fixed in the clamping groove through a first bolt; the second fixed end is fixed with the main frame through an upper pressing plate and a lower pressing plate covering the U-shaped groove and a second bolt penetrating through the U-shaped groove.

Preferably, the tricycle with two front wheels, wherein: the main frame is twisted relative to the anchor connecting frame by an angle not larger than 30 degrees.

Preferably, the tricycle with two front wheels, wherein: and a self-lubricating end face bearing is further arranged at the contact end face of the main frame and the anchor-shaped connecting frame.

The invention has the following beneficial effects:

the invention has the advantages of exquisite design and simple structure, and is beneficial to reducing the steering radius of the whole vehicle by enabling the front wheel and the rear wheel to simultaneously generate the arrangement of tilting towards the steering direction in the steering state, thereby increasing the flexibility, the stability and the smoothness of steering, greatly improving the steering safety of the vehicle in a high-speed state and improving the driving safety.

Through setting up the main frame that can twist reverse and reset relative anchor shape link, realized heeling of wheel when turning to, increase self-lubricating end face bearing, can guarantee main frame and the torsional smooth and easy nature of anchor shape link, reduce wearing and tearing, extension part life.

The U-shaped groove structure at one end of the torsion spring is convenient for adjusting the fixing position according to the actual size of each part, has stronger adaptability, and the area of the installation end surface formed by the U-shaped groove structure is larger, so that the fixing is more convenient through the two pressing plates, and the stability and the reliability of the fixing are ensured.

The front wheel steering mechanism is simple and reliable, convenient to assemble and suitable for mass production.

Drawings

FIG. 1 is a schematic structural view of a tricycle with two front wheels according to the present invention;

FIG. 2 is a schematic view of the main frame of the present invention with the outer shell removed;

FIG. 3 is a schematic view of the connection of the torsion spring of the present invention to the anchor bracket;

FIG. 4 is a cross-sectional view of the torsion spring and anchor bracket and main frame connection of the present invention;

FIG. 5 is a schematic view of the torsion spring configuration of the present invention;

FIG. 6 is a right side view of the tricycle with dual front wheels according to the present invention;

FIG. 7 is a front view of the tricycle with dual front wheels according to the present invention;

FIG. 8 is an enlarged schematic view of the front wheel of the present invention with the fasteners hidden;

FIG. 9 is a schematic view of the construction of the flipper of the present invention;

fig. 10 is a schematic view showing a steering state of the tricycle with two front wheels according to the present invention.

Detailed Description

Objects, advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments. The embodiments are merely exemplary for applying the technical solutions of the present invention, and any technical solution formed by replacing or converting the equivalent thereof falls within the scope of the present invention claimed.

The invention discloses a tricycle with double front wheels, which is shown in figures 1 and 10 and comprises a frame, two front wheels 92 and a rear wheel 93 which are positioned at the front side and the rear side of the frame,

under normal conditions, two front wheels 92 and one rear wheel 93 are vertical to the ground;

Specifically, as shown in fig. 10, the frame includes a steering mechanism 110, and a main frame 9 and an anchor connecting frame 96 respectively connected to the steering mechanism 110, the steering mechanism 110 is provided with the front wheels 92 and drives the front wheels 92 to steer and tilt during steering, the rear wheels 93 are provided at the tail of the main frame 9, the anchor connecting frame 96 is inserted into the front end of the main frame 9, and the main frame 9 can perform a twisting motion of a limited angle relative to the anchor connecting frame 96 and drive the rear wheels 93 to tilt.

In detail, as shown in fig. 1, fig. 6, fig. 7, and fig. 10, the steering mechanism 110 includes a steering driving mechanism fixedly connected to the main frame 9, the steering driving mechanism includes a head support tube 13 fixed to the front end of the main frame 9 and substantially perpendicular to the main frame 9, of course, when the tricycle is foldable, the head support tube 13 and the main frame 9 can be folded relatively, a telescopic tube 16 is slidably disposed in the head support tube 13, a head 1 is disposed on the telescopic tube 16, the head 1 includes a handle 11, a speed adjusting handle and two brake handles 12 disposed on the handle 11, at least one end of the handle 11 is disposed with a foldable rearview mirror 120, the telescopic tube 16 is fixed or released by a fastening member 18 with a steering tube 14 rotatable in the head support tube 13, the bottom end of the steering tube 14 is fixed with a fixed part 15, the fixed part 15 is pivotally connected with a connecting piece 24, the connecting piece 24 is a symmetrical two-half structure which is mutually inserted, the two-half structure is inserted together through a round pin 25, and two ends of the round pin 25 extend into the fixed part 15.

As shown in fig. 6 and 8, the steering mechanism 110 further includes two tie rods 21 connected to the connecting members 24 and symmetrically disposed, opposite ends of the two tie rods 21 are respectively pivoted to one half of the connecting members 24, the other ends of the two tie rods 21 are respectively pivoted to a tilting member 22 for mounting the front wheels 92 and driving the front wheels 92 to steer, and as shown in fig. 6, the ground height of the end of the tie rod 21 pivotally connected to the connecting member 24 is smaller than the ground height of the end of the tie rod 21 pivotally connected to the tilting member 22, and the two have a height difference H.

Furthermore, the two turning pieces 22 are respectively pivotally connected to one end of the anchor frame 96 through a rotating shaft 23, and the turning pieces 22 are rotated around the rotating shaft 23 under the action of the pull rod 21.

In detail, referring to fig. 8 and 9, the turning member 22 includes two first pivot holes 221 with a height difference, the rotating shaft 23 passes through the two first pivot holes 221 and the anchor connecting frame 96, and one end of the anchor connecting frame 96 is located between the two first pivot holes 221; the turning member 22 further comprises a second pivot hole 222 and a third pivot hole 223 which are located on the same side of the axis X formed by the two first pivot holes 221, the second pivot hole 222 is used for installing a front wheel 92, a front wheel shaft 17 for installing the front wheel 92 penetrates through the second pivot hole 222 and the center of the front wheel 92, and the front wheel 92 rotates around the front wheel shaft 17; the third pivot hole 223 is used for hinging one end of the pull rod 21, although in the embodiment, the third pivot hole 223 is at the same height as the higher one of the first pivot holes 221, but in other embodiments, the third pivot hole 223 may be at other possible positions.

In addition, as shown in fig. 1, 8 and 9, the flip 22 further includes a first fixing hole 224 for fixing the front wheel brake 19 and a second fixing hole 225 for fixing the front wheel fender 20, so that the front wheel fender 20 can move synchronously with the flip 22, i.e., can rotate synchronously with the front wheel, thereby covering the front wheel at any time, and since a plurality of components are supported by the flip 22, the degree of association between the components is increased, so that the overall structure is more compact and simplified.

Further, in this embodiment, as shown in fig. 2 and 10, the main frame 9 includes a base frame 911, a connection pipe 912 detachably connected to the base frame 911, and an outer shell 913 fixed to the base frame 911 and the connection pipe 912, but the frame 911 and the connection pipe 912 may be an integral structure in other embodiments.

As shown in fig. 2, pedals 914 extending from the rear of the base frame 911 to a cushion rod 94 and a rear wheel groove for mounting wheels 93 are mounted on both sides of the rear of the base frame 911, a mounting groove for mounting and fixing a connecting pipe 912 is provided at the front of the base frame 911, the mounting groove includes a circular groove area and a square groove area, the length of the square groove area is smaller than the diameter of the circular groove area, the cross-sectional shape of the connecting pipe 912 is matched with the mounting groove, the connecting pipe 912 can be effectively prevented from rotating relative to the base frame 911 by the structural arrangement of the mounting groove, of course, the mounting groove can be other feasible shapes, and at least two ends of the connecting pipe 912 have circular through holes, and an anchor-shaped connecting frame 96 is inserted into the circular hole at the front end of the connecting pipe 912.

Specifically, as shown in fig. 3, the cylindrical insertion part 962 of the anchor connecting frame 96 is inserted into the circular hole, and a self-lubricating end surface bearing 60 is further disposed between the opening end surface of the circular hole at the front end of the connecting pipe 912 and the anchor connecting frame 96, and since the circumferential contact surfaces of the anchor connecting frame 96 and the main frame 9 are both circular arc surfaces, the main frame 9 can perform a twisting motion of a limited angle relative to the anchor connecting frame 96; during steering, the main frame 9 rotates relative to the anchor-shaped connecting frame 96; after steering, the main frame 9 is reversely twisted and reset.

As shown in fig. 2 and 4, the main frame 9 and the anchor connecting frame 96 are integrally connected through a torsion spring 10, one end of the torsion spring 10 is fixed in an inner cavity of the anchor connecting frame 96, and the other end of the torsion spring 10 is fixed inside the main frame 9; when the vehicle is turned, the torsion spring 10 is twisted along with the main frame 9; after steering, the torsion spring 10 resets under the action of self torsion and drives the main frame 9 to reversely twist; moreover, due to the limitation of the torsion force of the torsion spring 10, the torsion angle of the main frame 9 relative to the anchor-shaped connecting frame 96 is not more than 30 degrees, so that the tilting angle of the main frame 9 is not too large, and the rollover condition is caused.

In detail, as shown in fig. 5 and 4, the torsion spring 10 includes a first fixing end 101 having a right angle or a round angle and a second fixing end 102 having a U-shaped groove, and a top region of the first fixing end 101 is inserted into a slot 961 in an inner cavity of the anchor connecting frame 96 and fixed in the slot 961 by a first bolt 200; the second fixing end 102 is fixed in the connection pipe 912 by an upper pressing plate 30 covering the U-shaped groove, a lower pressing plate 40, and a second bolt 50 penetrating the U-shaped groove, and the second fixing end 102 is located in the mounting groove.

Certainly, in other embodiments, the structures at the two ends of the torsion spring 10 may also be designed according to actual needs, and the fixing manner thereof may also be other manners, which are not described herein again.

When the tricycle of the present invention is used, in a normal straight line driving, as shown in fig. 1 and 6, since the tricycle has a stable structure of 3 wheels and the steering mechanism 110 does not deflect, all three wheels are in a vertical state and maintain a vertical state with the ground.

When the steering is needed, the steering pipe 14 can be driven to rotate simultaneously by rotating the faucet handle 11, as the steering tube 14 rotates, the fixed member 15 at the bottom thereof rotates synchronously, and as the fixed member 15 is fixed relative to the connecting member 24, the connecting member 24 also rotates substantially about the axis of the steering tube 14, thereby pushing the tie rod 21 on the side of turning and pulling the tie rod 21 on the opposite side of turning while moving in the direction of turning, at this time, the pull rod 21 which is subjected to the pushing force applies the pushing force to the overturning part 22 connected with the pull rod 21, the pull rod 21 which is subjected to the pulling force applies the pulling force to the overturning part 22 connected with the pull rod, since the second pivot hole 222 and the third pivot hole 223 are located on the same side of the axis X, so that the two flips rotate about the pivot 23 and the two front wheels 92 are steered by the flipper 22.

At the moment of turning, because the wheels have certain friction with the ground and the height difference H between the two ends of the tie rod 21, the push force and the pull force exerted on the front wheels 92 by the tie rod 21 are respectively in an obliquely upward direction and an obliquely downward direction, so that the two front wheels 92 are firstly inclined to the turning direction during turning, the two front wheels 92 are in a non-vertical state with the ground, and the vehicle can turn more smoothly.

Meanwhile, when the vehicle is turned, the driver generates a roll force, the roll force is applied to the main frame 9 through the head support tube 13 and the seat cushion 95, the main frame 9 can freely rotate relative to the anchor-shaped connecting frame 96, so that under the condition of stress, the main frame 9 rotates to the turning side, the torsion spring 10 twists along with the torsional roll of the main frame 9 and limits the torsion angle of the main frame 9 through the self reaction force, and the driver, the rear wheel 93 and the head support tube 13 also roll along with the main frame 9, namely, the rear wheel 93 is in a non-vertical state with the ground as shown in fig. 10, so that the turning radius can be reduced, and smooth turning can be realized.

When the turning is finished and the straight riding process is recovered, each part of the steering mechanism 110 is gradually reset along with the turning process, and the driver does not generate the side-tipping force any more, at the moment, the main frame 9 mainly bears the reverse acting force of the torsion spring 10, so that the main frame 9 is reversely twisted and reset under the reaction force of the torsion spring 10.

Finally, as shown in fig. 1, a cushion rod 94 is approximately vertically arranged above the main frame 9 and near the rear wheel 93, the cushion rod 94 is provided with the cushion 95, the cushion 95 is a bicycle cushion structure, in other embodiments, the cushion 95 may also be a cushion structure of another electric vehicle without the cushion rod 94, and details are not repeated herein; the main frame 9 is also provided with a battery frame 91 for mounting a battery, and other electric driving components are combined, so that the tricycle can become an electric tricycle.

The invention has various embodiments, and all technical solutions formed by adopting equivalent transformation or equivalent transformation are within the protection scope of the invention.

Claims

1. Two front wheel tricycles include the frame and are located two front wheels (92) and a rear wheel (93) of both sides around the frame, its characterized in that: under a normal state, two front wheels (92) and one rear wheel (93) are vertical to the ground; under the steering state, the front wheels (92) and the rear wheels (93) are not vertical to the ground; the frame comprises a steering mechanism (110), a main frame (9) and an anchor-shaped connecting frame (96), wherein the main frame (9) and the anchor-shaped connecting frame (96) are respectively connected with the steering mechanism (110), the steering mechanism (110) is provided with front wheels (92) and drives the front wheels (92) to steer and incline during steering, the tail part of the main frame (9) is provided with rear wheels (93), the front end of the main frame is inserted into the anchor-shaped connecting frame (96), and the main frame (9) can perform torsion motion with a limited angle relative to the anchor-shaped connecting frame (96) and drive the rear wheels (93) to incline; the steering mechanism (110) comprises a steering driving mechanism fixedly connected with the main frame (9), the steering driving mechanism is pivotally connected with one ends of two symmetrically-arranged pull rods (21), the other ends of the two pull rods (21) are respectively pivotally connected with a turnover part (22) used for mounting a front wheel (92), the two turnover parts (22) are respectively pivotally connected with one end of the anchor-shaped connecting frame (96) through a rotating shaft (23), and the turnover part (22) rotates by taking the rotating shaft (23) as a center under the action force of the pull rods (21); the steering driving mechanism comprises a head support pipe (13) connected with the main frame (9), a telescopic pipe (16) is further arranged in the head support pipe (13) in a sliding manner, a faucet handle (1) is fixed at the upper end of the telescopic pipe (16) and is fixed or loosened with a steering pipe (14) capable of rotating in the head support pipe (13) through a fastener (18), a fixed part (15) is fixed at the bottom end of the steering pipe (14), and the fixed part (15) is in pivot connection with a connecting piece (24); the connecting piece (24) comprises symmetrical two-half-type structures which are spliced together through a round pin (25), two ends of the round pin (25) extend into the fixing piece (15), opposite ends of the two pull rods (21) are respectively pivoted on one half of the two-half-type structures, and the ground height of one end, pivoted with the connecting piece (24), of each pull rod (21) is smaller than the ground height of one end, pivoted with the overturning piece (22), of each pull rod (21); the turnover piece (22) comprises two first pivot holes (221) with height difference, the rotating shaft (23) penetrates through the two first pivot holes (221) and the anchor-shaped connecting frame (96) is located between the two first pivot holes (221); the turnover piece (22) further comprises a second pivot hole (222) for mounting a front wheel and a third pivot hole (223) for hinging one end of the pull rod (21); the second pivot hole (222) and the third pivot hole (223) are located on the same side of the axis (X) formed by the two first pivot holes (221).

2. The tricycle of claim 1, wherein: the main frame (9) is connected with the anchor-shaped connecting frame (96) into a whole through a torsion spring (10), one end of the torsion spring (10) is fixed in the inner cavity of the anchor-shaped connecting frame (96), and the other end of the torsion spring is fixed in the main frame (9); when the steering mechanism is used for steering, the torsion spring (10) is twisted along with the main frame (9); after the steering, the torsion spring (10) drives the main frame (9) to reversely twist.

3. The tricycle of claim 2, wherein: the torsion spring (10) comprises a first fixed end (101) in a right-angle or round-angle shape and a second fixed end (102) in a U-shaped groove shape, the top area of the first fixed end (101) is embedded into a clamping groove (961) in the inner cavity of the anchor-shaped connecting frame (96), and the first fixed end is fixed in the clamping groove (961) through a first bolt (200); the second fixed end (102) is fixed with the main frame (9) through an upper pressure plate (30) and a lower pressure plate (40) covering the U-shaped groove and a second bolt (50) penetrating through the U-shaped groove.

4. The tricycle of claim 2, wherein: the main frame (9) is twisted relative to the anchor connecting frame (96) by an angle not larger than 30 degrees.

5. The tricycle of claim 2, wherein: and a self-lubricating end face bearing (60) is further arranged at the contact end face of the main frame (9) and the anchor-shaped connecting frame (96).