Road tricycle

Abstract

The utility model relates to the field of tricycles, and discloses a road tricycle which comprises a main beam, an annular base is fixed to one end of the main beam, a second rotating shaft is rotationally connected to the inner side wall of the annular base, pedals are connected to the two ends of the second rotating shaft in a sleeved mode, a first sleeve is obliquely fixed to the outer side wall of the annular base, and a connecting pipe is installed at the top end of the first sleeve. A seat cushion is fixed to the top of the connecting pipe, the outer side wall of the first sleeve is sleeved with a second sleeve, the side wall of the main beam is provided with a limiting mechanism used for limiting the second sleeve, a cross beam is fixed to the side wall of the second sleeve, a third sleeve is fixed to one end of the cross beam, a front fork arm is rotationally connected to the inner side wall of the third sleeve, and one end of the front fork arm penetrates through the top of the third sleeve. A handlebar is fixed to the top end of the third sleeve, and the inner side walls of the two ends of the front fork arm are rotationally connected with the same front wheel. The tricycle is folded twice, so that the size of the tricycle is reduced, the tricycle can be conveniently placed in an automobile trunk or other vehicles, and the practicability of the tricycle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tricycles, in particular to a highway tricycle. Background Art

[0002] A road tricycle is a three-wheeled vehicle primarily used for traveling on highways or urban roads. With the development of transportation, tricycles have become a flexible and efficient mode of transportation, playing an important role in short-distance transportation in cities and rural areas. Their three-wheel design provides greater stability, especially during driving, effectively reducing the risk of rollover. This makes tricycles more capable on uneven roads.

[0003] Traditional road tricycles are usually fixed structures and cannot be folded, making them inconvenient to carry during outdoor activities or travel. They cannot be placed in the trunk of a car or other means of transportation, reducing their practicality. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a highway tricycle.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A road tricycle comprises a main beam, one end of the main beam is fixed with an annular seat, the inner side wall of the annular seat is rotatably connected to the second rotating shaft, both ends of the second rotating shaft are sleeved with pedals, the outer side wall of the annular seat is obliquely fixed with a first sleeve, the top of the first sleeve is installed with a connecting pipe, the top of the connecting pipe is fixed with a seat cushion, the outer side wall of the first sleeve is sleeved with a second sleeve, the side wall of the main beam is provided with a limiting mechanism for limiting the second sleeve, the side wall of the second sleeve is fixed with a cross beam, one end of the cross beam is fixed with a third sleeve, the inner side wall of the third sleeve is rotatably connected to a front fork arm, and one end of the front fork arm passes through the top of the third sleeve, a handlebar is fixed to the top of the third sleeve, the inner side walls of both ends of the front fork arm are rotatably connected to the same front wheel, the other end of the main beam is fixed with a connecting rod, the side wall of one end of the connecting rod is provided with a rectangular groove, The side wall is slidably connected to a rectangular block, and a first slide groove is opened inside one end of the rectangular block, and the first slide groove is a contracted structure. A clamping mechanism for clamping the connecting rod and the rectangular block is provided inside the first slide groove, and the ends of the connecting rod and the rectangular block that are away from each other are fixed with a first rotating shaft, and the two side walls of the first rotating shaft are sleeved with rear wheels. During use of this device, by releasing the clamping state of the connecting rod and the rectangular block by the clamping mechanism, when the rectangular block is retracted into the interior of the connecting rod, the two rear wheels approach each other, completing the initial folding of the tricycle. When the restriction of the limiting mechanism on the second sleeve is released, the front wheel can be rotated so that it is on the same horizontal plane as the two rear wheels, completing the secondary folding of the tricycle. By folding the tricycle twice, its volume is reduced, which is convenient for placing in the trunk of a car or other means of transportation, thereby improving the practicality of the device.

[0007] As a further solution of the present invention, the side wall of the second rotating shaft is sleeved with a first sprocket, the side wall of the connecting rod is sleeved with a second sprocket, the side wall of the connecting rod is sleeved with a chain, and the chain is engaged with the first sprocket and the second sprocket. The two feet drive the two pedals to rotate, and then drive the second rotating shaft to rotate, and the chain and the two second sprockets drive the connecting rod to rotate. The rotation of the connecting rod cooperates with the rectangular block to drive the two rear wheels to rotate, and the tricycle starts to move.

[0008] The locking mechanism further comprises a first locking plate, wherein the first locking plate is fixed to the side wall of the second support bracket, the second locking plate is fixed to the side wall of the second support bracket, and the second locking plate is fixed to the side wall of the second support bracket. The outer wall of the second sleeve is obliquely fixed with a reinforcing beam, and the reinforcing beam and the third sleeve are fixed. When the tricycle needs to be folded, the first column is pressed downward, so that the first slider moves gradually downward along the inner wall of the first slide groove until the first column is completely retracted into the first slide groove, and the engagement between the connecting rod and the rectangular block is released, and the rectangular block is pushed to slide along the inside of the rectangular groove, so that the rectangular block gradually approaches the connecting rod, that is, one rear wheel gradually approaches the other rear wheel, completing the initial folding of the tricycle, and then pressing the second column to make the second slider move downward along the inner wall of the second slide groove, at this time, the second spring is in a compressed state until the second column is completely entered into the second slide groove, and the latch can be pulled out from one end of the limit plate as a whole, so that the fixation of the limit plate and the first connecting block can be released, thereby releasing the restriction on the second sleeve. At this time, the second sleeve can be restricted, driving the cross beam, the reinforcing beam, the third sleeve, the front fork arm and the front wheel as a whole to rotate around the second sleeve as the center of the circle, until the front wheel and the two rear wheels are on the same horizontal plane, completing the secondary folding of the tricycle.

[0009] The beneficial effects of the utility model are:

[0010] 1. During use of the device, by releasing the clamping state of the connecting rod and the rectangular block by the clamping mechanism, when the rectangular block is retracted into the interior of the connecting rod, the two rear wheels approach each other, completing the initial folding of the tricycle. When the restriction of the second sleeve by the restricting mechanism is released, the front wheel can be rotated so that it is on the same horizontal plane as the two rear wheels, completing the secondary folding of the tricycle. By folding the tricycle twice, its volume is reduced, making it convenient to place in the trunk of a car or other means of transportation, thereby improving the practicality of the device.

[0011] 2. The device design enables the tricycle to be folded by simple pressing and sliding operations, making it convenient for users to quickly complete the folding or assembly work when needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of a road tricycle proposed by the present utility model;

[0013] Figure 2 This is a schematic diagram of a connecting rod, a rectangular block and a first rotating shaft of a road tricycle proposed by the utility model;

[0014] Figure 3 This is a schematic diagram of the second sleeve, crossbeam, reinforcement beam and third sleeve of a highway tricycle proposed by the utility model;

[0015] Figure 4 This is a schematic diagram of a connecting rod, chain and second sprocket of a road tricycle proposed by the present utility model;

[0016] Figure 5 This is a schematic diagram of a cross-section of a connecting rod of a road tricycle proposed by the present invention;

[0017] Figure 6 This is a partial cross-sectional schematic diagram of a rectangular block of a road tricycle proposed by the present utility model;

[0018] Figure 7 This is a schematic diagram of the main beam, second sleeve and limit plate of a highway tricycle proposed by the utility model;

[0019] Figure 8 The utility model is a schematic cross-sectional view of a latch of a road tricycle.

[0020] In the figure: 1. rear wheel; 2. main beam; 3. annular seat; 4. first sleeve; 5. second sleeve; 6. cross beam; 7. reinforcing beam; 8. third sleeve; 9. front fork arm; 10. connecting pipe; 11. seat cushion; 12. handlebar; 13. limit plate; 14. connecting rod; 15. rectangular block; 16. first rotating shaft; 17. first sprocket; 18. chain; 19. second sprocket; 20. pedal; 21. second connecting block; 22. rectangular groove; 23. through hole; 24. first column; 25. first slide; 26. first slider; 27. first spring; 28. first connecting block; 29. latch; 30. second slide; 31. second slider; 32. second column; 33. second spring; 34. front wheel. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figure 1 - Figure 8 A road tricycle comprises a main beam 2, one end of the main beam 2 is fixed with an annular seat 3, the inner side wall of the annular seat 3 is rotatably connected to the second rotating shaft, both ends of the second rotating shaft are sleeved with pedals 20, the outer side wall of the annular seat 3 is obliquely fixed with a first sleeve 4, the top of the first sleeve 4 is installed with a connecting pipe 10, the top of the connecting pipe 10 is fixed with a seat cushion 11, the outer side wall of the first sleeve 4 is sleeved with a second sleeve 5, the side wall of the main beam 2 is provided with a limiting mechanism for limiting the second sleeve 5, the side wall of the second sleeve 5 is fixed with a cross beam 6, one end of the cross beam 6 is fixed with a third sleeve 8, the inner side wall of the third sleeve 8 is rotatably connected to a front fork arm 9, and one end of the front fork arm 9 passes through the top of the third sleeve 8, a handlebar 12 is fixed to the top of the third sleeve 8, the inner side walls of both ends of the front fork arm 9 are rotatably connected to the same front wheel 34, the other end of the main beam 2 is fixed with a connecting rod 14, the side wall of one end of the connecting rod 14 is provided with a rectangular groove 22, and the inner side wall of the rectangular groove 22 is slidably connected to a rectangular The first slide 25 is provided inside the first slide 25 at one end of the rectangular block 15, and the first slide 25 is a shrinking structure. A clamping mechanism for clamping the connecting rod 14 and the rectangular block 15 is provided inside the first slide 25. The ends of the connecting rod 14 and the rectangular block 15 that are away from each other are fixed with a first rotating shaft 16, and the side walls of the two first rotating shafts 16 are sleeved with the rear wheels 1. During use of the device, by releasing the clamping state of the connecting rod 14 and the rectangular block 15 by the clamping mechanism, the rectangular block 15 is retracted into the interior of the connecting rod 14, and the two rear wheels 1 are close to each other, completing the initial folding of the tricycle. When the restriction of the second sleeve 5 by the limiting mechanism is released, the front wheel 34 can be rotated so that it is on the same horizontal plane as the two rear wheels 1, completing the secondary folding of the tricycle. By folding the tricycle twice, its volume is reduced, which is convenient for placing in the trunk of a car or other means of transportation, thereby improving the practicality of the device.

[0023] Reference Figure 1 、 Figure 2 and Figure 4 In a preferred embodiment, the side wall of the second rotating shaft is sleeved with a first sprocket 17, the side wall of the connecting rod 14 is sleeved with a second sprocket 19, the side wall of the connecting rod 14 is sleeved with a chain 18, and the chain 18 is engaged with the first sprocket 17 and the second sprocket 19. The two feet drive the two pedals 20 to rotate, and then drive the second rotating shaft to rotate, and cooperate with the chain 18 and the two second sprockets 19 to drive the connecting rod 14 to rotate. The rotation of the connecting rod 14 cooperates with the rectangular block 15 to drive the two rear wheels 1 to rotate, and the tricycle starts to move.

[0024] Reference Figure 4 - Figure 8 In a preferred embodiment, the limiting mechanism includes a second connecting block 21, the second connecting block 21 is fixed to the side wall of the main beam 2, the side wall of the second sleeve 5 is fixed with a first connecting block 28, a limiting plate 13 is provided on the top of the main beam 2, and the two ends of the limiting plate 13 are rotatably connected to the second connecting block 21 and the first connecting block 28 respectively, a latch 29 is provided on the outer wall of one end of the limiting plate 13, a second sliding groove 30 is provided inside, and the second sliding groove 30 is a shrinking structure, the inner wall of the second sliding groove 30 is slidably connected to the second slider 31, the top of the second slider 31 is fixed with a second column 32, and the second column 3 2 is passed through the outer wall of the latch 29, a second spring 33 is provided inside the second slide 30, and the second spring 33 is located below the second slider 31, the clamping mechanism includes a first slider 26, the first slider 26 is slidably set on the inner wall of the first slide 25, a first column 24 is fixed to the top of the first slider 26, and one end of the first column 24 passes through the top of the rectangular block 15, a first spring 27 is provided inside the first slide 25, and the first spring 27 is located below the first slider 26, a through hole 23 is opened on the side wall of the connecting rod 14, and the through hole 23 and the first column 24 are adapted, the outer side of the second sleeve 5 The wall is tilted and fixed with a reinforcing beam 7, and the reinforcing beam 7 and the third sleeve 8 are fixed. When the tricycle needs to be folded, the first column 24 is pressed downward, so that the first slider 26 gradually moves downward along the inner wall of the first slide groove 25 until the first column 24 is completely retracted into the first slide groove 25, and the clamping state between the connecting rod 14 and the rectangular block 15 can be released, and the rectangular block 15 is pushed to slide along the inside of the rectangular groove 22, so that the rectangular block 15 gradually approaches the connecting rod 14, that is, one of the rear wheels 1 gradually approaches the other rear wheel 1, completing the preliminary folding of the tricycle, and then pressing the second column 32 so that the first slider 26 can be gradually retracted into the first slide groove 25. The second slider 31 moves downward along the inner wall of the second slide groove 30. At this time, the second spring 33 is in a compressed state until the second column 32 completely enters the second slide groove 30. The latch 29 can be pulled out from one end of the limit plate 13 as a whole, and the fixation of the limit plate 13 and the first connecting block 28 can be released, thereby releasing the restriction on the second sleeve 5. At this time, the second sleeve 5 can be restricted, driving the cross beam 6, the reinforcing beam 7, the third sleeve 8, the front fork arm 9 and the front wheel 34 to rotate as a whole with the second sleeve 5 as the center of the circle until the front wheel 34 and the two rear wheels 1 are on the same horizontal plane, completing the secondary folding of the three wheels.

[0025] The working principle of this embodiment: When the tricycle needs to be folded during use, the first column 24 is pressed downward, so that the first slider 26 gradually moves downward along the inner wall of the first slide groove 25 until the first column 24 is completely retracted into the first slide groove 25, and the clamping state between the connecting rod 14 and the rectangular block 15 is released, and the rectangular block 15 is pushed to slide along the inside of the rectangular groove 22, so that the rectangular block 15 gradually approaches the connecting rod 14, that is, one of the rear wheels 1 gradually approaches the other rear wheel 1, completing the initial folding of the tricycle, and then pressing the second column 32 to make the second slider 31 move downward along the inner wall of the second slide groove 30. At this time, the second column 32 is pressed downward, so that the second slider 31 moves downward along the inner wall of the second slide groove 30. The spring 33 is in a compressed state until the second column 32 completely enters the second slide groove 30, and the pin 29 can be pulled out from one end of the limit plate 13 as a whole, so that the fixation of the limit plate 13 and the first connecting block 28 can be released, thereby releasing the restriction on the second sleeve 5. At this time, the second sleeve 5 can be restricted, driving the cross beam 6, the reinforcing beam 7, the third sleeve 8, the front fork arm 9 and the front wheel 34 to rotate as a whole with the second sleeve 5 as the center of the circle until the front wheel 34 and the two rear wheels 1 are on the same horizontal plane, completing the secondary folding of the three wheels, making it easier to place it in the trunk of a car or other means of transportation, thereby improving practicality. Conversely, the tricycle can be quickly assembled.

[0026] For ease of description, spatially relative terms such as "above," "above," "on the upper surface of," and "upper" may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in a drawing is inverted, a device described as "above" or "on top of" another device or structure would then be positioned as "below" or "beneath" the other device or structure. Thus, the exemplary term "above" could include both the "above" and "below" orientations. The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A road tricycle comprising a main beam (2), characterized in that: An annular seat (3) is fixed to one end of the main beam (2), and the inner side wall of the annular seat (3) is rotatably connected to a second rotating shaft, and both ends of the second rotating shaft are sleeved with pedals (20), and the outer side wall of the annular seat (3) is tiltedly fixed to a first sleeve (4), and a connecting pipe (10) is installed at the top of the first sleeve (4), and a seat cushion (11) is fixed to the top of the connecting pipe (10), and the outer side wall of the first sleeve (4) is sleeved with a second sleeve (5), and the side wall of the main beam (2) is provided with a limiting mechanism for limiting the second sleeve (5), and the side wall of the second sleeve (5) is fixed to a crossbeam (6), and one end of the crossbeam (6) is fixed to a third sleeve (8), and the inner side wall of the third sleeve (8) is rotatably connected to a front fork arm (9), and one end of the front fork arm (9) passes through the third sleeve (8). ) top, a handlebar (12) is fixed to the top of the third sleeve (8), the inner side walls at both ends of the front fork arm (9) are rotatably connected to the same front wheel (34), a connecting rod (14) is fixed to the other end of the main beam (2), a rectangular groove (22) is provided on the side wall of one end of the connecting rod (14), a rectangular block (15) is slidably connected to the inner side wall of the rectangular groove (22), a first sliding groove (25) is provided inside one end of the rectangular block (15), and the first sliding groove (25) is a constricted structure, a clamping mechanism for clamping the connecting rod (14) and the rectangular block (15) is provided inside the first sliding groove (25), the ends of the connecting rod (14) and the rectangular block (15) away from each other are fixed with a first rotating shaft (16), and the side walls of the two first rotating shafts (16) are both sleeved with the rear wheel (1).

2. The road tricycle according to claim 1, characterized in that: The side wall of the second rotating shaft is sleeved with a first sprocket (17), the side wall of the connecting rod (14) is sleeved with a second sprocket (19), the side wall of the connecting rod (14) is sleeved with a chain (18), and the chain (18) is meshed with both the first sprocket (17) and the second sprocket (19).

3. The road tricycle according to claim 1, characterized in that: The limiting mechanism comprises a second connecting block (21), the second connecting block (21) being fixed on the side wall of the main beam (2), a first connecting block (28) being fixed on the side wall of the second sleeve (5), a limiting plate (13) being provided on the top of the main beam (2), and two ends of the limiting plate (13) being rotatably connected to the second connecting block (21) and the first connecting block (28), respectively.

4. The road tricycle according to claim 3, characterized in that: A latch (29) is provided through the outer wall of one end of the limit plate (13), a second slide groove (30) is provided inside, and the second slide groove (30) is a constricted structure, a second slider (31) is slidably connected to the inner wall of the second slide groove (30), a second column (32) is fixed on the top of the second slider (31), and one end of the second column (32) passes through the outer wall of the latch (29), a second spring (33) is provided inside the second slide groove (30), and the second spring (33) is located below the second slider (31).

5. The road tricycle according to claim 1, characterized in that: The clamping mechanism includes a first slider (26), the first slider (26) is slidably arranged on the inner wall of the first sliding groove (25), a first column (24) is fixed on the top of the first slider (26), and one end of the first column (24) passes through the top of the rectangular block (15), a first spring (27) is arranged inside the first sliding groove (25), and the first spring (27) is located below the first slider (26), and a through hole (23) is opened on the side wall of the connecting rod (14), and the through hole (23) and the first column (24) are adapted.

6. The road tricycle according to claim 1, characterized in that: A reinforcement beam (7) is obliquely fixed to the outer side wall of the second sleeve (5), and the reinforcement beam (7) and the third sleeve (8) are fixed.

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