CN106428361B

CN106428361B - Foldable reverse tricycle

Info

Publication number: CN106428361B
Application number: CN201611022158.4A
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: CN106428361A

Abstract

The invention discloses a foldable reverse tricycle which comprises a main support, wherein a T-shaped support is arranged at the front end of the main support, a supporting frame is further fixed at the front end of the main support, and a tricycle head supporting pipe rotates around a rotating shaft relative to the supporting frame under the driving of a driving mechanism, so that the foldable reverse tricycle is switched between an opening state and a folding state. The driving mechanism is of a connecting rod structure and comprises a first rod and a second rod, a locking plate is arranged on the first rod in a sliding mode, a pull ring is arranged at the upper end of the locking plate, convex shoulders are arranged on the bending plates on the two sides of the locking plate, a notch is formed in the second rod, and when the foldable reverse tricycle is in an open state, the convex shoulders of the locking plate stretch into the notch formed in the second rod. The invention has the following beneficial effects: the folding mechanism and the locking mechanism are safe and reliable, the foldable reverse tricycle can be quickly switched between the folded state and the unfolded state, and the tricycle is suitable for being widely popularized.

Description

Foldable reverse tricycle

Technical Field

The invention relates to an electric vehicle, in particular to a foldable reverse electric tricycle with double front wheels.

Background

The electric vehicle is more and more accepted by the public due to the advantages of convenience, environmental protection and the like. The electric vehicle is transformed based on the structure of the existing bicycle, and the electric vehicle can run quickly under the drive of electric energy by adding a battery, a driving system and an electric control system.

The tricycle, as the name suggests, because it has increased a wheel and ground contact for the bicycle, on the wet road surface that easily produces the sideslip, has very unique stability advantage, reduces the possibility that the person of riding sideslip and fall down by a wide margin, and under complicated topography earth's surface environment, the security of traveling has a great promotion than the bicycle. 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 is also a special reverse tricycle, having two front wheels and one rear wheel, as shown in chinese patents CN200610170204.5 and CN201510774236.5, the rear wheel being the driving wheel and the front wheel being the steering wheel. However, a foldable reverse electro-tricycle does not exist in the prior art; in addition, even though the folding forms of the existing electric tricycles are various, the structure which is really simple, convenient and reliable is few and few.

Disclosure of Invention

The present invention is directed to solving the above problems of the prior art and to providing a foldable tricycle with two front wheels.

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

a foldable reverse tricycle comprises a main support, two front wheels and a rear wheel, wherein the two front wheels and the rear wheel are respectively positioned on the front side and the rear side of the main support, a T-shaped support is arranged at the front end of the main support, the two front wheels are respectively symmetrically arranged on the two sides of the T-shaped support, a head support pipe used for supporting a head is arranged above the T-shaped support, a steering pipe is arranged in the head support pipe, one end of the steering pipe is fixedly connected with the head, the other end of the steering pipe is matched and connected with steering mechanisms of the two front wheels, a support frame is further fixed at the front end of the main support and comprises two parallel straight plates, a driving mechanism is arranged between the two parallel straight plates, a rotating shaft is arranged between the support frame and the head support pipe, the two ends of the driving mechanism are respectively pivoted to the support frame and the head support pipe, and under the driving of the driving mechanism, the head support tube rotates around the rotating shaft relative to the supporting frame, so that the foldable reverse tricycle is switched between an opening state and a folding state;

the driving mechanism is of a connecting rod structure and comprises a first rod and a second rod, the first rod is arranged on the supporting frame through a first pivot, the second rod is arranged on the headstock support pipe through a second pivot, the middle part of the first rod is connected with the end part of the second rod through a third pivot, and the movable end of the first rod is a force application end;

the foldable reverse tricycle is characterized in that the first rod is further provided with a locking plate in a sliding mode, a pull ring is arranged at the upper end of the locking plate, protruding shoulders are arranged on the bending plates on the two sides of the locking plate, the second rod is provided with a notch, and when the foldable reverse tricycle is in an open state, the protruding shoulders of the locking plate stretch into the notch formed in the second rod.

Preferably, the locking plate has a waist-shaped groove for the third pivot to pass through.

Preferably, one of the straight plate outer pivots of the supporting frame is provided with a locking block, and when the foldable reverse tricycle is in an open state, a buckling structure of the locking block is clamped with the third pivot.

Preferably, when the foldable tricycle is in the open state, the distance between the third pivot and the rolling axis of the front wheel is smaller than or equal to the distance between the connecting line formed by the first pivot and the second pivot and the rolling axis of the front wheel.

Preferably, when the foldable tricycle is in the open position, the first rod abuts against a fourth shaft passing through the support frame.

Preferably, a fork plate is fixed to a bottom end of the steering pipe, the steering mechanism of the foldable inverted tricycle includes a fixed plate and a rotating plate, the fixed plate is fixed to the supporting frame, the rotating plate is rotatably disposed on the fixed plate through a pivot structure, and when the foldable inverted tricycle is in an open state, the fork plate is erected on the rotating plate and the fork plate and the rotating plate are relatively fixed.

Preferably, the rotating plate is hinged to a connecting piece, pull rods symmetrically extend from two sides of the connecting piece respectively, one ends of the two pull rods are fixed on a driving plate respectively, the driving plate comprises a pivot, and the pivot is arranged on the T-shaped support; under the action of the pulling force of the pull rod, the driving sheet rotates around the pivot to drive the front wheel to steer.

Preferably, the connecting piece is a symmetrical two-half structure which is mutually inserted, and the opposite ends of the symmetrically arranged pull rods are respectively pivoted on one half of the two-half structure; the two half-type structures are spliced together through a round pin; the rotary plate is erected on the connecting piece, and two ends of the round pin extend into the rotary plate.

Preferably, the tail part of the rotating plate is a notch; the fixing plate is provided with a reset plate through a pivot, and the reset plate can selectively enter or exit the notch.

Preferably, when the foldable reverse tricycle is in a folded state, a torsion spring arranged on the fixing plate pushes the reset plate to enter the notch; when the foldable reverse tricycle is in an opening state, the steering tube pushes the reset plate to exit the notch by overcoming the acting force of the torsion spring.

The invention has the following beneficial effects: the folding mechanism and the locking mechanism are safe and reliable, the foldable reverse tricycle can be quickly switched between the folded state and the unfolded state, and the tricycle is suitable for being widely popularized.

Drawings

FIG. 1 is a schematic view of a foldable inverted tricycle according to the present invention;

FIG. 2 is a right side view of the foldable inverted tricycle of the present invention;

FIG. 3 is a front view of the foldable inverted tricycle of the present invention;

FIG. 4 is a schematic view of another alternative configuration of the foldable inverted tricycle of the present invention;

FIG. 5 is a schematic view of the foldable inverted tricycle of the present invention in a folded configuration;

FIG. 6 is a front view of the foldable inverted tricycle of the present invention in a folded position;

FIG. 7 is an enlarged view of portion A of FIG. 3;

fig. 8 is an enlarged view of portion B of fig. 6;

FIG. 9 is a perspective view of the drive mechanism;

FIG. 10 is a perspective view of the drive mechanism, with the locking plate 46 omitted;

fig. 11 is a perspective view of the locking plate 46.

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.

As shown in fig. 1 to 11, the present invention discloses a foldable reverse tricycle, comprising a main frame 9, two front wheels 92 and a rear wheel 93 respectively located at the front and rear sides of the main frame 9, wherein a T-shaped frame 96 is provided at the front end of the main frame 9, and two front wheels 92 are respectively symmetrically provided at the two sides of the T-shaped frame 96. The main bracket 9 is also provided with a battery bracket 91 for placing a rechargeable battery, so that the tricycle is an electric tricycle. Of course, the common man-powered tricycle can be formed by replacing the pedals connected with the rear wheel 93 through the chains.

The main support 9 is approximately vertically provided with a head support tube 13 and a cushion rod 94, and a cushion 95 is installed on the cushion rod 94. The cushion rod 94 is inserted into the main bracket 9. The vehicle head support tube 13 is provided with a vehicle head 1, and the vehicle head 1 comprises a faucet handle 11 and a brake 12. The head support tube 13 is approximately perpendicular to the main support 9 and is fixed relative to the main support 9.

The head support tube 13 is used for supporting the head 1 and is provided with a telescopic tube 16 in a sliding manner and a steering tube 14 in a rotating manner, and the telescopic tube 16 is fixed or loosened with the steering tube 14 through a fastener 18. The top end of the telescopic pipe 16 is provided with a faucet handle 11. As in the prior art, rotation of the faucet handle 11 rotates the steering tube 14. The bottom end of the steering tube 14 is provided with a rotating plate 15.

A supporting frame 3 is further fixed at the front end of the main support 9, the supporting frame 3 comprises two parallel straight plates 31, a driving mechanism is arranged between the two parallel straight plates, a rotating shaft 131 is arranged between the supporting frame 3 and the head support tube 13, and two ends of the driving mechanism are respectively pivoted on the supporting frame 3 and the head support tube 13.

Referring to fig. 3 and 4, the driving mechanism is a link structure and includes a first rod 41 and a second rod 42, the first rod 41 is disposed on the support frame 3 through a first pivot 411, the second rod 42 is disposed on the head bracket tube 13 through a second pivot 421, a middle portion of the first rod 41 and an end portion of the second rod 42 are connected together through a third pivot 43, and a movable end 412 of the first rod 41 is a force applying end.

The force application end is pulled, and the head support tube 13 rotates around the rotating shaft 131 relative to the support frame 3 under the driving of the driving mechanism, so that the foldable reverse tricycle is switched between the unfolded state and the folded state.

As shown in fig. 3 in particular, when the foldable tricycle is in the open state, the distance between the third pivot 43 and the rolling axis of the front wheel 92 is smaller than the distance between the connecting line formed by the first pivot 411 and the second pivot 421 and the rolling axis of the front wheel 92, i.e. the foldable tricycle assumes the over-dead-center locking state when in the open state. The first rod 41 rests on a fourth shaft 44 passing through the supporting frame 3. The locking mechanism can prevent the foldable reverse tricycle from being folded when in an opening state. The further locking mechanism further comprises two structures, one of which is shown in fig. 4, a locking block 32 is pivotally arranged outside one of the straight plates 31 of the supporting frame 3, and when the foldable reverse tricycle is in the open state, the buckling structure of the locking block 32 is clamped with the third pivot 43; referring to fig. 9, 10 and 11, a locking plate 46 is further slidably disposed on the first rod 41, a pull ring 461 is disposed at an upper end of the locking plate 46, shoulders 462 are disposed on the bent plates at two sides, and a notch 426 is disposed on the second rod 42. When the lock plate 46 is provided on the first lever 41, the third pivot 43 passes through the first lever 41, the second lever 42, and the lock plate 46 at the same time. The lock plate 46 has a waist-shaped groove 463 for allowing the third pivot shaft 43 to pass therethrough, and is secured to be slidable. When the foldable tricycle is in the open state, the shoulder 462 of the locking plate 46 extends into the notch 426 formed on the second rod 42, so as to further ensure that the first rod 41 and the second rod 42 are relatively fixed. When the foldable tricycle needs to be folded, the locking plate 46 is pulled to slide relative to the first rod 41, so that the shoulder 462 is disengaged from the notch 426, and then the movable end 412 is pulled to fold the tricycle.

A fork plate 141 is fixed at the bottom end of the steering tube 14, the steering mechanism of the foldable tricycle comprises a fixed plate 51 and a rotating plate 15, the fixed plate 51 is fixed on the supporting frame 3, the rotating plate 15 is rotatably arranged on the fixed plate 51 through a pivot structure, and when the foldable tricycle is in an opening state, the fork plate 141 is arranged on the rotating plate 15 and the two are fixed relatively.

Specifically, the foldable tricycle with reversed structure further comprises symmetrically arranged pull rods 21 driven by the rotating plate 15, one end of each of the two pull rods 21 is fixed on a driving plate 22, the driving plate 22 comprises a pivot 23, and the pivot 23 is arranged on the T-shaped bracket 96. Under the pulling force of the pull rod 21, the driving plate 22 rotates around the pivot 23 to drive the front wheel 92 to turn.

The opposite ends of the symmetrically arranged pull rods 21 are all pivoted on the same connecting piece 24. The connecting piece 24 is a symmetrical two-half structure which is inserted into each other, and the opposite ends of the symmetrically arranged pull rods 21 are respectively pivoted on one half of the two-half structure; the two half structures are spliced together through a round pin 25; the rotating plate 15 of the rotary driving member is erected on the connecting member 24, and both ends of the round pin 25 extend into the rotating plate 15.

Referring to fig. 7 and 8, the rear portion of the rotating plate 15 is a notch 151; a reset plate 52 is pivotally disposed on the fixing plate 51, and the reset plate 52 can selectively enter or exit the notch 151. When the foldable tricycle is in a folded state, a torsion spring 53 arranged on the fixing plate 51 pushes the reset plate 52 into the notch 151; when the foldable tricycle is in the open position, the steering tube 14 pushes the return plate 52 out of the notch 151 against the force of the torsion spring 53.

The folding process of the present invention is briefly described below. When the foldable tricycle is in the open position, the first rod 41 and the second rod 42 are in the position shown in fig. 3, and the first rod 41 abuts against a fourth shaft 44 passing through the support frame 3. The stable locking structure fixes the head frame tube 13 and the main frame 9 approximately vertically. At this time, as shown in fig. 1 and 7, the fork plate 141 is erected on the rotating plate 15 and fixed to each other due to three sides of the rotating plate and the steering tube 14 is erected due to the erection of the head bracket tube 13, and the reset plate 52 is pushed to exit from the notch 151 against the action force of the torsion spring 53. In this way, the steering tube 14 is rotated and transmitted to the rotating plate 15 via the fork plate 141, and the rotating plate 15 can also be rotated accordingly. Since the swivel plate 15 is fixed relative to the connecting member 24, the connecting member 24 is also rotated substantially about the axis of the steering tube 14, and the tie rods 21 on both sides of the connecting member 24 are pulled or pushed. Taking fig. 4 as an example, when the tricycle needs to turn left, the pull rod 21 in the figure pushes the front wheel 92 to rotate, and specifically, when the pull rod 21 receives a pushing force, the driving plate 22 receives a pushing force due to the pivot 23, so that the driving plate 22 rotates counterclockwise in the figure around the axis X. Likewise, the other front wheel 92 will turn left under the tension of the other tie rod 21. At this moment, the wheels will roll left first when turning left due to certain friction and height difference H between the wheels and the ground, so that the vehicle turns more smoothly. The same principle and the opposite force are applied to the right-hand turn of the vehicle, and the description thereof is omitted.

When the reverse tricycle of the present invention is to be folded, the seat post 94 is first withdrawn from the main frame 9. Then, the movable end 412 of the first rod 41 is pulled to make the first rod 41 and the second rod 42 assume the state shown in fig. 5 and 6. Due to the linkage, the head carrier tube 13 is then pivoted about the pivot axis 131 relative to the support frame 3, so that the steering tube 14 and the fork plate 141 are likewise pivoted relative to the support frame 3. At this time, the fork plate 141 releases the rotating plate 15, the steering tube 14 is also disengaged from the reset plate 52, and the torsion spring 53 pushes the reset plate 52 into the notch 151, so that the rotating plate 15 remains fixed, so that the two front wheels 92 also remain locked in the forward direction without being laterally rotated. This is advantageous in that the tricycle can be pulled away from the front wheel when the tricycle is folded, and the fork plate 141 can be easily engaged with the rotating plate 15 when the tricycle is unfolded next time.

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. A foldable reverse tricycle comprises a main support (9), two front wheels (92) and a rear wheel (93) which are respectively positioned at the front side and the rear side of the main support (9), wherein a T-shaped support (96) is arranged at the front end of the main support (9), the two front wheels (92) are respectively and symmetrically arranged at the two sides of the T-shaped support (96),

a headstock support tube (13) for supporting a headstock (1) is arranged above the T-shaped support (96), a steering tube (14) is arranged in the headstock support tube (13), one end of the steering tube (14) is fixedly connected with the headstock (1), the other end is matched and connected with steering mechanisms of the two front wheels (92),

the method is characterized in that: a supporting frame (3) is further fixed at the front end of the main support (9), the supporting frame (3) comprises two parallel straight plates, a driving mechanism is arranged between the two parallel straight plates, a rotating shaft (131) is arranged between the supporting frame (3) and the tricycle head supporting tube (13), two ends of the driving mechanism are respectively pivoted to the supporting frame (3) and the tricycle head supporting tube (13), and the tricycle head supporting tube (13) rotates around the rotating shaft (131) relative to the supporting frame (3) under the driving of the driving mechanism, so that the foldable reverse tricycle can be switched between an open state and a folded state;

the driving mechanism is of a connecting rod structure and comprises a first rod (41) and a second rod (42), the first rod (41) is arranged on the supporting frame (3) through a first pivot (411), the second rod (42) is arranged on the headstock support tube (13) through a second pivot (421), the middle of the first rod (41) and the end of the second rod (42) are connected together through a third pivot (43), and the movable end (412) of the first rod (41) is a force application end;

still slide on first pole (41) and be equipped with lockplate (46), the upper end of lockplate (46) is equipped with pull ring (461), is equipped with shoulder (462) on the board of bending of both sides, be equipped with breach (426) on second pole (42), when collapsible reverse tricycle is in the open mode, the shoulder (462) of lockplate (46) stretch into to be equipped with breach (426) on second pole (42).

2. The foldable tricycle of claim 1, wherein: the locking plate (46) is provided with a waist-shaped groove (463) for the third pivot (43) to penetrate through.

3. A foldable tricycle, according to claim 2, characterized in that: one of the straight plates (31) of the supporting frame (3) is provided with a locking block (32) in a pivoted mode, and when the foldable reverse tricycle is in an opening state, the buckling structure of the locking block (32) is clamped on the third pivot (43).

4. A foldable tricycle, according to claim 2, characterized in that: when the foldable tricycle is in an opening state, the distance between the third pivot (43) and the rolling axis of the front wheel (92) is smaller than or equal to the distance between a connecting line formed by the first pivot (411) and the second pivot (421) and the rolling axis of the front wheel (92).

5. A foldable tricycle, according to claim 4, characterized in that: when the foldable reverse tricycle is in an opening state, the first rod (41) is abutted against a fourth shaft (44) penetrating through the supporting frame (3).

6. A foldable tricycle, according to any of claims 1 to 5, characterized in that: a fork plate (141) is fixed at the bottom end of the steering pipe (14), the steering mechanism of the foldable inverted tricycle comprises a fixed plate (51) and a rotating plate (15), the fixed plate (51) is fixed on the supporting frame (3), the rotating plate (15) is rotatably arranged on the fixed plate (51) through a pivot structure, and when the foldable inverted tricycle is in an opened state, the fork plate (141) is erected on the rotating plate (15) and the two are relatively fixed.

7. The foldable tricycle of claim 6, wherein: the rotating plate (15) is hinged with a connecting piece (24), pull rods (21) are symmetrically arranged on two sides of the connecting piece (24) in an extending mode respectively, one ends of the two pull rods (21) are fixed on a driving piece (22) respectively, the driving piece (22) comprises a pivot (23), and the pivot (23) is arranged on the T-shaped support (96); under the pulling force of the pull rod (21), the driving sheet (22) rotates around the pivot (23) to drive the front wheel (92) to turn.

8. The foldable tricycle of claim 7, wherein: the connecting piece (24) is a symmetrical two-half structure which is mutually inserted, and the opposite ends of the symmetrically arranged pull rods (21) are respectively pivoted on one half of the two-half structure; the two half structures are spliced together through a round pin (25); the rotating plate (15) is erected on the connecting piece (24), and two ends of the round pin (25) extend into the rotating plate (15).

9. The foldable tricycle of claim 6, wherein: the tail part of the rotating plate (15) is provided with a notch (151); the fixing plate (51) is pivoted with a resetting plate (52), and the resetting plate (52) can selectively enter or exit the notch (151).

10. The foldable tricycle of claim 9, wherein: when the foldable reverse tricycle is in a folded state, a torsion spring (53) arranged on the fixing plate (51) pushes the reset plate (52) to enter the notch (151);

when the foldable reverse tricycle is in an opening state, the steering tube (14) pushes the reset plate (52) to exit the notch (151) against the acting force of the torsion spring (53).