CN106476956B

CN106476956B - Reverse tricycle

Info

Publication number: CN106476956B
Application number: CN201611030571.5A
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: 2022-01-11
Anticipated expiration: 2036-11-16
Also published as: CN106476956A

Abstract

The invention discloses a reverse tricycle which comprises a main frame, wherein the tail part of the main frame is provided with a rear wheel, the main frame is connected with an anchor-shaped connecting frame and a tricycle head support pipe, the anchor-shaped connecting frame is connected with a steering pipe capable of rotating in the tricycle head support pipe through a pull rod type steering mechanism for mounting two front wheels, and the steering pipe is connected with a tricycle head; under a normal state, a plane formed by the central axis of the steering tube and the symmetric axis of the anchor-shaped connecting frame is vertical to the horizontal plane; under the steering state, a plane formed by the central axis of the steering tube and the symmetric axis of the anchor-shaped connecting frame forms an included angle of not 90 degrees with the horizontal plane. The steering pipe and the steering handle are inclined in the same direction as the steering direction when in a steering state, so that the steering pipe and the steering handle are beneficial to steering operation of a rider.

Description

Reverse tricycle

Technical Field

The invention relates to a tricycle, in particular to a reverse 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 present invention is directed to solve the above problems of the prior art, and an object of the present invention is to provide a tricycle having a simple structure, being suitable for production, and smoothly turning.

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

the reverse tricycle comprises a main frame, wherein the tail part of the main frame is provided with a rear wheel, the main frame is connected with an anchor-shaped connecting frame and a tricycle head support pipe, the anchor-shaped connecting frame is connected with a steering pipe which can rotate in the tricycle head support pipe through a pull rod type steering mechanism for mounting two front wheels, and the steering pipe is connected with a tricycle head;

under a normal state, a plane formed by the central axis of the steering tube and the symmetric axis of the anchor-shaped connecting frame is vertical to the horizontal plane;

under the steering state, a plane formed by the central axis of the steering tube and the symmetric axis of the anchor-shaped connecting frame forms an included angle of not 90 degrees with the horizontal plane.

Preferably, the steering structure of a reverse tricycle, wherein: a telescopic pipe is arranged in the head support pipe in a sliding mode, and the telescopic pipe is fixed or loosened with the steering pipe through a locking piece and is provided with the head.

Preferably, the steering structure of a reverse tricycle, wherein: the pull rod type steering mechanism comprises a fixing part fixed at the bottom of the steering tube, the fixing part is connected with the opposite ends of two symmetrically arranged pull rods through a connecting part, the opposite ends of the two pull rods are respectively pivoted with a turning part, the turning parts are respectively connected with one end of the anchor-shaped connecting frame through rotating shafts, and the turning parts are driven by the steering tube to respectively rotate around the rotating shafts.

Preferably, the steering structure of a reverse tricycle, wherein: the connecting piece is a symmetrical two-half structure which is mutually inserted, the two-half structure is inserted together through a round pin, two ends of the round pin extend into the fixing piece, and the opposite ends of the two pull rods are respectively pivoted on one half of the two-half structure.

Preferably, the steering structure of a reverse tricycle, wherein: the ground height of one end of the pull rod, which is connected with the connecting piece through the pivot, is smaller than the ground height of one end of the pull rod, which is connected with the turnover piece through the pivot.

Preferably, the steering structure of a reverse tricycle, 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 steering structure of a reverse tricycle, wherein: the turnover piece further comprises a first fixing hole used for fixing a front wheel brake and a second fixing hole used for fixing a front wheel fender.

Preferably, the steering structure of a reverse tricycle, wherein: the main frame can perform torsional motion relative to the anchor-shaped connecting frame, the main frame and the anchor-shaped connecting frame are connected into a whole through a torsion spring, a self-lubricating end surface bearing is further arranged at the contact end surface of the main frame and the anchor-shaped connecting frame, one end of the torsion spring is fixed in the 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 steering structure of a reverse tricycle, 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 covering the upper pressing plate and the lower pressing plate of the U-shaped groove and a second bolt penetrating through the U-shaped groove.

Preferably, the steering structure of a reverse tricycle, wherein: the main frame is twisted relative to the anchor connecting frame by an angle not larger than 30 degrees.

The invention has the following beneficial effects:

the steering tube and the steering handle are inclined in the same direction as the steering direction when in a steering state, so that the steering tube and the steering handle are beneficial to steering operation of a riding person.

Through setting up the main frame that can twist reverse and reset relative anchor shape link, realized heeling of steering tube 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 of the dual front wheel tricycle of the present invention in a steering position;

FIG. 11 is a schematic view of the present invention in a turned condition with respect to the horizontal plane.

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 reverse tricycle, which is shown in figure 1 and comprises a main frame 9, wherein the tail part of the main frame 9 is provided with a rear wheel 93, the main frame 9 is connected with a tricycle head support pipe 13 and an anchor-shaped connecting frame 96, the tricycle head support pipe 13 is fixed at the front end of the main frame 9 and is approximately vertical to the main frame 9, and of course, when the reverse tricycle is in a foldable style, the tricycle head support pipe 13 and the main frame 9 can be folded relatively.

As shown in fig. 1 and 7, a telescopic tube 16 is further slidably disposed in the head support tube 13, a head 1 is disposed on the telescopic tube 16, the head 1 includes a handlebar 11, and a speed adjusting handlebar and two braking handlebars 12 disposed on the handlebar 11, at least one end of the handlebar 11 is provided with a foldable rearview mirror 120, and the telescopic tube 16 is fixed or loosened with the steering tube 14 through a locking member 18, and they form a driving structure for driving the pull rod type steering mechanism 110.

As shown in fig. 1 and 11, the anchor frame 96 is connected to the steering tube 14 rotatable in the head bracket tube 13 via a tie-rod type steering mechanism 110 for mounting the two front wheels 92,

in a normal state, a plane formed by the central axis Z of the steering tube 14 and the symmetric axis Y of the anchor-shaped connecting frame 96 is vertical to a horizontal plane;

in a steering state, a plane formed by the central axis Z of the steering tube 14 and the symmetric axis Y of the anchor connecting frame 96 forms an included angle of not 90 degrees with the horizontal plane.

As shown in fig. 1, 6 and 7, the tie rod type steering mechanism 110 includes a fixing member 15 fixed at the bottom of the steering tube 14, the fixing member 15 is pivotally connected to a connecting member 24, the connecting member 24 is connected to opposite ends of two symmetrically disposed tie rods 21, and opposite ends of the two tie rods 21 are respectively pivotally connected to a flip member 22.

Specifically, as shown in fig. 8, the connecting member 24 is a symmetrical two-half structure that is inserted into each other, the two-half structure is inserted into each other through a round pin 25, both ends of the round pin 25 extend into the fixing member 15, opposite ends of the two pull rods 21 are respectively pivotally connected to one half of the two-half structure, and as shown in fig. 6, the ground height of the end of the pull rod 21 pivotally connected to the connecting member 24 is smaller than the ground height of the end of the pull rod 21 pivotally connected to the flip member 22, and the two have a height difference H.

As shown in fig. 8, the turning members 22 are used for mounting the front wheels 92 and driving the front wheels 92 to turn, and the two turning members 22 are respectively connected to one end of the anchor connecting frame 96 through a rotating shaft 23 and are respectively driven by the steering tube 14 to rotate around the rotating shaft 23.

In detail, as shown in fig. 8 and 9, the turning member 22 includes two first pivot holes 221 having a height difference, the rotating shaft 23 passes through the two first pivot holes 221 and the anchor connecting frame 96, and both ends of the anchor connecting frame 96 are respectively located between the two first pivot holes 221 of the two turning members 22.

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, as shown in fig. 4, the anchor-shaped connecting frame is inserted into the front end of the main frame 9, in detail, in this embodiment, as shown in fig. 2 and 10, the main frame 9 includes a base frame 911, a connecting pipe 912 detachably connected to the base frame 911, and an outer shell 913 fixed to the base frame 911 and the connecting pipe, but in other embodiments, the frame 911 and the connecting pipe 912 may also be an integral structure.

The utility model discloses a bicycle seat cushion, including bed frame 911, footboard 914 and the rear wheel groove that is used for installing wheel 93, the rear portion both sides of bed frame 911 are installed from the bed frame 911 afterbody extends to the cushion pole 94, the front end of bed frame 911 is provided with the mounting groove that is used for installation and fixed connection pipe 912, the mounting groove includes circular groove district and square groove district, the length in square groove district is less than the diameter in circular groove district, the cross sectional shape of connecting pipe 912 with the mounting groove phase-match, structural setting through the mounting groove can effectively prevent connecting pipe 912 relative bed frame 911 from rotating, of course, the mounting groove also can be other feasible shapes, and, at least, the both ends of connecting pipe 912 have circular through-hole, it has anchor shaped link 96 to peg graft in the circular port of connecting pipe 912 front end.

Specifically, as shown in fig. 3 and 4, the cylindrical insertion portion 962 of the anchor connecting bracket 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 bracket 96, so that the main frame 9 can perform a twisting motion with a limited angle relative to the anchor connecting bracket 96 because the circumferential contact surfaces of the main frame 9 and the anchor connecting bracket 96 are both circular arc surfaces; 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.

Preferably, as shown in fig. 4, the main frame 9 and the anchor connecting frame 96 are connected into a whole through a torsion spring 10, one end of the torsion spring 10 is fixed in the 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. 4 and 5, 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 reverse tricycle of the present invention is used, during normal straight-line driving, as shown in fig. 6, since the reverse tricycle has a stable structure with 3 wheels and the steering tube 14 does not deflect, the three wheels are all in a vertical state and maintain a vertical state with the ground, and a plane formed by the central axis Z of the steering tube 14 and the symmetry axis Y of the anchor-shaped connecting frame 96 is vertical to a horizontal plane.

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, so that the two overturning parts rotate by taking the rotating shaft 23 as a center, since the second pivot hole 222 and the third pivot hole 223 are located on the same side of the axis X, the two front wheels 92 will be steered by the flip 22.

At the moment of turning, due to a certain friction force between the wheels and the ground and the height difference H between the two ends of the pull rod 21, the push force and the pull force exerted on the front wheels 92 by the pull rod 21 are in an obliquely upward direction and an obliquely downward direction respectively, so that the front wheels 92 are inclined to the turning direction firstly when turning, and an included angle of not 90 degrees is formed between the two front wheels 92 and the ground, so that the vehicle can turn more smoothly.

Meanwhile, when the vehicle is turned, the driver generates a roll force, which is applied to the main frame 9 through the head support tube 13 and the seat cushion 95, because the main frame 9 can freely rotate relative to the anchor-shaped connecting frame 96, under the condition of stress, the main frame 9 rotates to the turning side, along with the torsional roll of the main frame 9, the torsion spring 10 twists 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, as shown in fig. 10, the steering tube 14 in the head support tube 13 also tilts, so that as shown in fig. 11, the plane formed by the central axis Z of the steering tube 14 and the symmetrical axis Y of the anchor-shaped connecting frame 96 forms an included angle of not 90 degrees with the horizontal plane, thereby the turning radius can be reduced, and smooth turning is realized.

When the turning is finished and the straight riding process is recovered, each part of the pull rod type 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.

As shown in fig. 1, a cushion rod 94 is approximately vertically disposed 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 bike cushion, in other embodiments, the cushion 95 may also be a cushion structure of another electric vehicle without the cushion rod 94, and details thereof are not repeated; the main frame 9 is also provided with a battery frame 91 for mounting a battery, and the tricycle can be changed into an electric tricycle by combining with other electric driving components.

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. Reverse tricycle, including main frame (9), the afterbody of main frame (9) is provided with a rear wheel (93), its characterized in that: the main frame (9) is connected with an anchor-shaped connecting frame (96) and a vehicle head support pipe (13), the anchor-shaped connecting frame (96) is connected with a steering pipe (14) which can rotate in the vehicle head support pipe (13) through a pull rod type steering mechanism (110) for mounting two front wheels (92), and the steering pipe (14) is connected with a vehicle head (1);

under a normal state, a plane formed by a central axis (Z) of the steering tube (14) and a symmetric axis (Y) of the anchor-shaped connecting frame (96) is vertical to a horizontal plane;

in a steering state, a plane formed by a central axis (Z) of the steering tube (14) and a symmetric axis (Y) of the anchor-shaped connecting frame (96) forms an included angle of not 90 degrees with a horizontal plane;

the pull rod type steering mechanism comprises a fixing piece (15) fixed at the bottom of the steering tube (14), the fixing piece (15) is connected with the opposite ends of two symmetrically arranged pull rods (21) through a connecting piece (24), the opposite ends of the two pull rods (21) are respectively connected with a turnover piece (22) in a pivot mode, the two turnover pieces (22) are respectively connected with one end of the anchor-shaped connecting frame (96) through a rotating shaft (23), and are driven by the steering tube (14) to respectively rotate around the rotating shaft (23);

the connecting piece (24) is a symmetrical two-half structure which is mutually spliced together, the two-half structure is spliced together through a round pin (25), two ends of the round pin (25) extend into the fixing piece (15), and the opposite ends of the two pull rods (21) are respectively pivoted on one half of the two-half structure;

the main frame (9) can perform torsional motion relative to the anchor-shaped connecting frame (96), the main frame and the anchor-shaped connecting frame are connected into a whole through a torsion spring (10), a self-lubricating end face bearing (60) is further arranged at the contact end face of the main frame and the anchor-shaped connecting frame, 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 steering, the torsion spring (10) drives the main frame (9) to reversely twist;

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.

2. The steering structure of a reverse tricycle according to claim 1, wherein: a telescopic pipe (16) is further slidably arranged in the headstock support pipe (13), and the telescopic pipe (16) is fixed or loosened with the steering pipe (14) through a locking piece (18) and is provided with the headstock (1).

3. The steering structure of a reverse tricycle according to claim 1, wherein: the ground height of one end of the pull rod (21) which is pivotally connected with the connecting piece (24) is smaller than that of one end of the pull rod (21) which is pivotally connected with the overturning piece (22).

4. The steering structure of a reverse tricycle according to claim 1, wherein: 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 gluing 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).

5. The inverted tricycle of claim 1, wherein: the turnover part (22) further comprises 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).

6. The inverted tricycle of claim 1, wherein: the main frame (9) is twisted relative to the anchor connecting frame (96) by an angle not larger than 30 degrees.