CN210116596U

CN210116596U - Swinging tricycle

Info

Publication number: CN210116596U
Application number: CN201921042642.2U
Authority: CN
Inventors: 罗长春; 李立新
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-02-28
Anticipated expiration: 2029-07-05

Abstract

A swing tricycle comprises a front wheel frame with a front wheel and a rear wheel frame with two rear wheels, wherein the front wheel frame and the rear wheel frame are connected with each other through a girder; the crossbeam can swing around the swing rotating shaft along with the rotation of the swing rotating shaft and drive the front wheel frame to swing left and right relative to the rear wheel frame. This application is through setting up the pivot of swaing parallel with the girder, and when the tricycle swayd, the girder was around swaing the pivot swing, and the position of girder can change, and there is not the problem of structure interference in girder and two rear wheels, can not make the rear wheel leave ground because the front wheel frame swing of tricycle and produce danger, owing to eliminated the structure interference, structural friction diminishes moreover, turns to and sways all very nimble, rides more smoothly.

Description

Swinging tricycle

Technical Field

The utility model relates to a manpower or electric tricycle, especially a tricycle sways that possesses buffer function.

Background

Tricycles are common, but the tricycle is difficult to ride and difficult to hold in direction, and people who ride for the first time often lean to one side and ride in a ditch. Because two rear wheels of the tricycle are coaxially arranged, the speeds of the two rear wheels are the same when the tricycle runs in a straight line, and no problem exists; however, as long as the vehicle body slightly deflects, the speeds of the two rear wheels cannot be changed in a coordinated manner, and the vehicle can fall over if the vehicle body does not deflect in the direction. Therefore, the key of the tricycle is to hold the direction of the front wheel, the tricycle cannot turn too hard, and the tricycle turns over when the turning radius is too small; and the riding speed can not be too fast, the direction can not be controlled by slightly rotating the handle, and the bicycle is directly thrown away normally. The tricycle is suitable for being ridden at a slow speed, has one more wheel compared with the bicycle, has good stability, but has small turning radius and poor obstacle trafficability, is not as convenient as the bicycle because of no fast riding, and is especially not suitable for being used in narrow space.

In view of the problems of the tricycle, the prior art proposes a tricycle with a swing function.

For example, CN 205499181U discloses a locking mechanism in a tricycle swinging device, and its background art mentions that the swinging tricycle is characterized in that the swinging device is used to incline inward to reduce centrifugal force when a rider turns, and its advantage lies in solving the problem that the tricycle is easy to turn over when turning. However, this prior art does not describe the specific structure of a rocking tricycle at all.

CN 206187216U discloses a tricycle swing system, which is arranged between a rear wheel train and a front wheel train of a tricycle, the tricycle swing system having a swing, the swing comprising: the shell is fixedly connected with a rear wheel carrier body of the rear wheel train; the axle, at least a part of axle can swing and install in the casing, the axle links to each other with the front wheel carrier body of preceding train, and the axle with be provided with the swing angle limit structure of restriction axle for the wobbling swing range of casing between the casing. The general structure of this prior art is such that the front wheel portion can rotate about an axis connecting between the front wheel and the rear wheel as a rotation axis.

Similarly, CN 201300933Y discloses a multifunctional tricycle, including the front frame supporting the front wheels, the rear frame supporting the two rear wheels, the connecting rod connecting the front frame and the rear frame and extending longitudinally along the vehicle body, a seat mechanism located above the connecting rod and fixedly connected with the connecting rod, a swing mechanism is provided on the connecting rod, the swing mechanism includes a T-shaped through hole formed along the axial direction and the radial direction of the connecting rod, a swing pin disposed in the T-shaped through hole and having two ends exposed outside the connecting rod, by providing the swing mechanism, when a user is driving, the user can adjust the swing mechanism to a swing working state as required, the left and right swing of the swing pin drives the connecting rod to swing left and right, thereby driving the seat mechanism to swing left and right. This prior art also has a connecting rod connecting between the front wheel and the rear wheel as a rotating shaft, and the seat connected to the front wheel can rotate around the connecting rod.

The prior art swinging tricycles described above all have a problem in that the front wheel portion of the tricycle, when swinging, rotates around the frame connecting the front and rear frames. Theoretically, two rear wheels of the tricycle are tightly attached to the ground, and the height of the crossbeam connected with the frame of the rear wheels and the ground is not changed when the crossbeam serves as a rotating shaft to rotate. However, as long as the front wheel part is inclined at an angle, the height of the front wheel part and the ground is reduced, which causes the girder to move downwards, the girder moving downwards interferes with the two rear wheels, the swing angle of the front wheel part is small, the girder and the two rear wheels can be compensated through the structural clearance, and if the swing angle exceeds a certain degree, one of the two rear wheels leaves the ground, and the tricycle is in danger of overturning. Moreover, even though the interference problem of the girder and a part of the two rear wheels can be compensated through the structural clearance, the interference is the inherent defect of the structure, so that the problem that the structural clearance is excessively extruded when the swinging tricycle with the structure is ridden exists, the friction force between the structures is too large, the steering and the swinging are not very flexible, and the feeling is relatively harsh.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a tricycle sways to reduce or avoid the aforementioned problem.

In order to solve the technical problem, the utility model provides a swing tricycle, which comprises a front wheel frame with a front wheel and a rear wheel frame with two rear wheels, wherein the front wheel frame and the rear wheel frame are connected with each other through a crossbeam; the crossbeam can swing around the swing rotating shaft along with the rotation of the swing rotating shaft and drive the front wheel frame to swing left and right relative to the rear wheel frame.

Preferably, the swing rotating shaft is connected with a swing piece which can rotate along with the swing rotating shaft, and the swing piece is connected with a return spring.

Preferably, the swinging piece is provided with an arc-shaped long hole, two ends of the arc-shaped long hole are respectively hung with the return spring, and the other ends of the return springs are respectively connected to the left side and the right side of the rear wheel frame.

Preferably, the two rear wheels are respectively supported on the rear wheel frame through a driving wheel shaft and a driven wheel shaft; the driving wheel shaft is connected with a driving flywheel; the driving wheel shaft and the driven wheel shaft are arranged in a mutually disconnected mode in a coaxial mode.

Preferably, the rear wheel frame is provided with a support plate which extends downward to support the driving wheel shaft.

Preferably, the swinging seat is provided with a longitudinal shaft hole matched with the swinging rotating shaft; the upper surface of the swing seat is provided with an arc-shaped surface parallel to the longitudinal shaft hole, and two sides of the arc-shaped surface are provided with shoulder parts.

Preferably, an arc tile extends out of the outer surface of the swinging rotating shaft, the arc tile can rotate around the arc surface, and two sides of the arc tile can prop against the shoulder part to limit the left-right rotation amplitude of the swinging rotating shaft.

Preferably, a first connecting lug extends out of the upper surface of the swinging rotating shaft, and a double-lug piece which is matched and connected with the first connecting lug is arranged at the tail end of the crossbeam; the front end of the swinging rotating shaft is connected to the second connecting lug extending out of the lower surface of the crossbeam through a threaded rod.

Preferably, the rear wheel frame includes two lower parallel bars and two upper parallel bars extending laterally; the swing seat is longitudinally fixed in the middle of the two lower parallel rods in a straddling manner; a rear article basket is arranged above the two upper parallel rods.

Preferably, a third connecting lug extending transversely extends from the upper surface of the crossbeam, and a locking lug which is matched and connected with the third connecting lug is arranged on the upper parallel rod adjacent to the third connecting lug.

This application is through setting up the pivot of swaing parallel with the girder, and when the tricycle swayd, the girder was around swaing the pivot swing, and the position of girder can change, and there is not the problem of structure interference in girder and two rear wheels, can not make the rear wheel leave ground because the front wheel frame swing of tricycle and produce danger, owing to eliminated the structure interference, structural friction diminishes moreover, turns to and sways all very nimble, rides more smoothly.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,

FIG. 1 is a schematic side view of a swing tricycle of the present invention;

FIG. 2 is a schematic view of the rear direction of a swinging tricycle;

fig. 3 and 4 are schematic exploded views of the rear structure of the rocking tricycle of the present invention from different perspectives;

fig. 5 shows a schematic structural view of a rear wheel frame of the swing tricycle of the present invention.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.

Based on prior art's defect, the utility model provides a swing tricycle is particularly useful for occasions such as old person's house, shopping, buy dish or amusement and recreation use, and it can be the tricycle that sways that rides of a manpower, also can be a swing electric tricycle or booster tricycle.

Specifically, as shown in fig. 1-5, the swing tricycle of the present invention includes a front wheel frame 1 having a front wheel 10 and a rear wheel frame 2 having two rear wheels 20, the front wheel frame 1 and the rear wheel frame 2 are connected to each other through a girder 3, unlike the existing swing tricycle, a swing seat 21 (see fig. 2-3) is fixedly connected to the rear wheel frame 2 of the swing tricycle of the present invention, a swing shaft 22 is rotatably disposed in the swing seat 21, and the swing shaft 22 is connected below the girder 3 in parallel to the girder 3; the girder 3 can swing around the swing rotating shaft 22 along with the rotation of the swing rotating shaft 22 and drives the front wheel frame 1 to swing left and right relative to the rear wheel frame 2.

The utility model provides a tricycle sways has set up a pivot of swaying parallel with the girder, when the front wheel frame of tricycle sways, the girder is around swaying pivot wobbling, the position of the girder of the tricycle of this application also can change, and not fixed like prior art, therefore when the front wheel frame of tricycle sways, there is not the problem of structure interference in girder and two rear wheels, can not make the rear wheel leave ground because the front wheel frame swing of tricycle and produce danger, and owing to eliminated the structure interference, structural friction diminishes, turn to and sway all can be very nimble, it can be more smooth and easy to ride.

Further, the rocking holder 21 has a longitudinal shaft hole 211 to be fitted with the rocking shaft 22, and the rocking shaft 22 is inserted into the longitudinal shaft hole 211. The end of the swinging rotating shaft 22 penetrates out of the longitudinal shaft hole 211, a swinging piece 23 which can rotate along with the swinging rotating shaft 22 is connected to the end of the swinging rotating shaft 22, and a return spring 24 is connected to the swinging piece 23. Specifically, in the exploded perspective view shown in fig. 3, a bolt and a washer are shown that can be connected to the end of the swing spindle 22, the end of the swing spindle 22 is provided with a truncated circular boss 229 (fig. 3) that can be engaged with a truncated circular hole 239 (fig. 2) on the swing piece 23, and the swing piece 23 can be engaged with the swing spindle 22 by engaging the truncated circular hole 239 with the truncated circular boss 229 and fixing the bolt washer, so that the swing piece can rotate together with the swing spindle 22.

Further, as shown in the figure, the rocking piece 23 is provided with an arc-shaped long hole 231, two ends of the arc-shaped long hole 231 are respectively hung with a return spring 24, and the other ends of the return springs 24 are respectively connected to the left side and the right side of the rear wheel frame 2. The return spring 24 is shown as being very bulky and conspicuous for ease of identification, and therefore is not labeled in every figure, so as to reduce the number of symbols in the figures and to make it more visible. When the swinging piece 23 rotates to one side along with the swinging rotating shaft 22, the end part of the return spring 24 at the same side freely moves in the arc-shaped long hole 231, and no force action is generated; the reset spring 24 on the other side is stretched to generate reset force, so that a buffer function can be provided in the swinging process, and the riding comfort is improved.

In one embodiment, two rear wheels 20 are supported on the rear wheel frame 2 through a driving wheel axle 25 and a driven wheel axle 26, respectively; the driving wheel shaft 25 is connected with a driving flywheel 251; the driving wheel shaft 25 and the driven wheel shaft 26 are coaxially arranged to be disconnected from each other. That is, although the two rear wheels 20 of the tricycle in this application are coaxially disposed, they do not share a common rotating shaft, and the rotating shafts of the two rear wheels 20 are disconnected, so that when the driving wheel shaft 25 with the driving flywheel 251 drives one rear wheel 20 to rotate, the other rear wheel 20 is passively moved forward. When meetting turn, obstacle, two rear wheels can desynchronously rotate, therefore eliminated two rear wheels of current tricycle and needed the problem of synchronous coordination transform speed, the front wheel direction is very controlled easily, the obstacle trafficability characteristic improves greatly, can ride fast like two-wheeled bicycle, and two rear wheels need not rotate in step in addition, can reduce turning radius, use in being fit for narrow and small space, are particularly suitable for city resident business turn over elevator.

Specifically, the rear wheel frame 2 is provided with a support plate 252 projecting downward to support the driving axle 25 for supporting the driving axle 25 from the distal end.

Further, in addition to the rocking base 21 having the longitudinal shaft hole 211 for cooperating with the rocking rotary shaft 22, the upper surface of the rocking base 21 has an arc surface 212 parallel to the longitudinal shaft hole 211, and shoulders 213 are provided on both sides of the arc surface 212, as shown in fig. 4 and 5. Correspondingly, an arc-shaped tile 222 extends out of the outer surface of the swing rotating shaft 22, the arc-shaped tile 222 can rotate around the arc-shaped surface 212, and two sides of the arc-shaped tile 222 can abut against the shoulder part 213 to limit the left-right rotation amplitude of the swing rotating shaft 22. The arc-shaped tiles 222 can be welded on the outer surface of the swing rotating shaft 22, after the swing rotating shaft 22 is inserted into the longitudinal shaft hole 211, the arc-shaped tiles 222 are positioned on the outer side of the arc-shaped surface 212 of the swing seat 21, when the swing rotating shaft 22 rotates left and right, the arc-shaped tiles 222 abut against the shoulder part 213, and the swing rotating shaft 22 cannot continue to rotate, so that the left and right swing amplitude of the tricycle can be limited through the design, and the phenomenon that the swing amplitude is too large is avoided.

Further, as shown in the figure, a first connecting lug 224 extends from the upper surface of the swing rotating shaft 22, and a double lug piece 324 which is connected with the first connecting lug 224 in a matching manner is arranged at the end of the girder 3; the front end of the swing rotating shaft 22 is connected to a second connecting lug 325 extending from the lower surface of the girder 3 through a threaded rod 225.

Further, the rear wheel frame 2 includes two lower parallel bars 27 and two upper parallel bars 28 extending laterally; the swing seat 21 is longitudinally fixed in the middle of the two lower parallel rods 27 in a straddling manner; above the two upper parallel bars 28 are positioned rear article baskets 29 (see fig. 1).

Further, a third connecting lug 326 extending in the transverse direction is protruded from the upper surface of the girder 3, and a locking lug 286 cooperatively connected with the third connecting lug 326 is disposed on the upper parallel rod 28 adjacent to the third connecting lug 326. When the tricycle is not required to swing, the third connecting lug 326 and the locking lug 286 can be connected through a connecting piece such as a bolt, a connecting rod or an iron wire, so that the girder 3 cannot swing relative to the rear wheel frame 2, and the swinging tricycle can be locked to be used as a common tricycle.

To sum up, this application is through setting up the pivot of swaing parallel with the girder, when the tricycle sways, the girder around swaing the pivot swing, the position of girder can change, there is not the problem of structure interference in girder and two rear wheels, can not make the rear wheel leave ground and produce danger because of the front wheel frame swing of tricycle, owing to eliminated the structure interference in addition, structural friction diminishes, turns to and sways all very nimble, and it is more smooth and easy to ride.

It is to be understood by those skilled in the art that while the present invention has been described in terms of several embodiments, it is not intended that each embodiment cover a separate embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including all technical equivalents which are encompassed by the claims.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.

Claims

1. A swing tricycle comprises a front wheel frame (1) with a front wheel (10) and a rear wheel frame (2) with two rear wheels (20), wherein the front wheel frame (1) and the rear wheel frame (2) are connected with each other through a crossbeam (3), and is characterized in that the rear wheel frame (2) is fixedly connected with a swing seat (21), a swing rotating shaft (22) is rotatably arranged in the swing seat (21), and the swing rotating shaft (22) is connected below the crossbeam (3) in parallel with the crossbeam (3); the crossbeam (3) can swing around the swing rotating shaft (22) along with the rotation of the swing rotating shaft (22) and drive the front wheel frame (1) to swing left and right relative to the rear wheel frame (2).

2. The rocking tricycle of claim 1, characterised in that the rocking shaft (22) is connected to a rocking plate (23) which is rotatable with the rocking shaft (22), the rocking plate (23) being connected to a return spring (24).

3. The rocking tricycle as claimed in claim 2, wherein the rocking plate (23) is provided with an arc-shaped long hole (231), the two ends of the arc-shaped long hole (231) are respectively hung with one return spring (24), and the other ends of the return springs (24) are respectively connected to the left and right sides of the rear wheel frame (2).

4. The rocking tricycle of claim 1, characterised in that the two rear wheels (20) are supported on the rear wheel frame (2) by a driving wheel axle (25) and a driven wheel axle (26), respectively; the driving wheel shaft (25) is connected with a driving flywheel (251); the driving wheel shaft (25) and the driven wheel shaft (26) are arranged in a mutually disconnected mode in a coaxial mode.

5. The rocking tricycle of claim 4, characterised in that the rear wheel frame (2) is provided with a support plate (252) projecting downwards to support the drive wheel axle (25).

6. The rocking tricycle according to claim 1, characterised in that the rocking seat (21) has a longitudinal axle hole (211) cooperating with the rocking spindle (22); the upper surface of rocking seat (21) has be on a parallel with arcwall face (212) of longitudinal shaft hole (211), the both sides of arcwall face (212) are provided with shoulder portion (213).

7. The rocking tricycle of claim 6, characterised in that the outer surface of the rocking shaft (22) has a curved tile (222) extending therefrom, the curved tile (222) being rotatable about the curved surface (212), the curved tile (222) being adapted to bear against the shoulder (213) on either side thereof to limit the extent of side-to-side rotation of the rocking shaft (22).

8. The rocking tricycle as claimed in claim 1, characterised in that a first connecting lug (224) protrudes from the upper surface of the rocking shaft (22), and a double lug (324) is provided at the end of the girder (3) to be cooperatively connected with the first connecting lug (224); the front end of the swinging rotating shaft (22) is connected to a second connecting lug (325) extending out of the lower surface of the girder (3) through a threaded rod (225).

9. The rocking tricycle according to claim 1, characterised in that the rear wheel frame (2) comprises two lower parallel bars (27) and two upper parallel bars (28) extending laterally; the swing seat (21) is longitudinally fixed in the middle of the two lower parallel rods (27) in a straddling manner; a rear article basket (29) is arranged above the two upper parallel rods (28).

10. The rocking tricycle as claimed in claim 9, characterised in that a third laterally extending attachment lug (326) projects from the upper face of the frame (3), and a locking lug (286) is provided on the upper parallel bar (28) adjacent the third attachment lug (326) for co-operating engagement with the third attachment lug (326).