TWI392616B - Light-duty vehicle with adjustable wheelbase - Google Patents

Description

Variable wheelbase light carrier

The present invention relates to a light carrier, and more particularly, to a change in the axial distance between the front and rear wheels, thereby adjusting the inclination angle of the seat, so that the seat can be in a normal sitting or reclining posture. Variable wheelbase light carrier.

In order to improve the practicality and value of the light-duty vehicle, the industry has adopted the existing bicycle as the infrastructure to change the common two-wheel bicycle type into a three-wheeled reclining vehicle to improve pedaling and riding. Safety and comfort; the conventional three-wheeled reclining car structure is mainly composed of a three-wheel structure of "front one and two rear", a transmission device and a seat, etc. The reclining angle of the seat allows the rider to achieve comfortable pedaling and riding.

The general sitting posture and the reclining sitting posture are different from each other. Because the human body is more sensitive in a reclining posture when sitting in a normal sitting posture, the speed of immediate response is also faster, so the road condition is more complicated or short-distance riding. In this case, it is more suitable for riding in a normal sitting position; while the reclining sitting posture is more comfortable for the human body, so when riding for a long distance, it is more suitable to ride in a reclining manner to avoid riding for a long time. It causes the body to feel tired and sore.

However, whether it is a light bicycle such as a general bicycle, a two-wheeled reclining vehicle or the above-mentioned three-wheeled reclining vehicle, it can only exhibit a single angle and does not have an adjustable angle function, so that it cannot match the road condition. And the rider needs to switch between high and low sitting postures.

In general, the shortcomings of the prior art, including the conventional light-duty vehicles, can only exhibit a single angle and have no function of adjustable angles. Therefore, it is impossible to match the road conditions and the rider's demand for high and low. The angle of the sitting posture is switched; and in view of solving the above disadvantages, the present invention proposes a variable wheelbase lightweight carrier.

The present invention is a variable wheelbase light carrier, comprising: a link set having at least one main rod, the end of the main rod being pivotally connected to a movable bracket, and the movable bracket is pivotally connected to the main pole One end of the main pole is pivotally connected to at least one movable rod, and the movable rod is provided with a second pivoting portion at the other end of the main rod, the first pivoting portion and the first pivoting portion Two at least one adjusting rod is pivotally connected between the two pivoting portions; at least one power source is pivotally connected between the main rod and the second pivoting portion; and a seat is provided with at least one connecting rod below the seat, the connection One end of the rod is connected to the second pivoting portion; and a driving wheel set includes at least one front wheel and at least one rear wheel, the rear wheel is pivotally connected to the end of the adjusting rod, and one of the front forks above the front wheel A fixing rod is connected to the tube, and the front end of the main rod is connected to the fixing rod; thereby, the main rod and the movable bracket, the movable rod and the adjusting rod form a set of link mechanisms, and the power source is For controlling the opening and closing angle between the set of link mechanisms, to change the axis between the front wheel and the rear wheel Off, thereby adjusting the angle of inclination of the seat and the sitting position.

One of the objects of the present invention is to control the opening and closing angle between the set of link mechanisms by the set of link mechanisms and the arrangement of the power source, so as to change the axis between the front wheel and the rear wheel. The distance is adjusted to adjust the tilt angle and the sitting posture of the seat to switch the seat between the high sitting posture and the low sitting posture.

The second object of the present invention is that the fixing rod is provided with a movable joint at the other end of the front fork tube for pivoting a handle bar, and an angular adjustment rod is pivotally connected between the handle bar and the movable rod to enable the The handlebars can be used to create different angles of inclination for different sitting positions.

The third object of the present invention is to provide a motor unit on the front wheel so that the present invention has the function of an electric vehicle.

For the convenience of the description, the central idea expressed in the column of the above summary of the present invention is expressed by a specific embodiment. Various items in the embodiments are depicted in terms of ratios, dimensions, amounts of deformation, or displacements that are suitable for illustration, and are not drawn to the proportions of actual elements, as set forth above. In the following description, like elements are denoted by the same reference numerals.

As shown in the first to third figures, the present invention is a variable wheelbase light carrier, which may be a tricycle or an electric tricycle, and mainly includes a linkage group 10, at least one The power source 20, a seat 30, and a drive wheel set 40.

The connecting rod set 10 has at least one main rod 11 which is generally U-shaped. A middle portion of the main rod 11 is provided with a fixing seat 111 and a horizontal direction in the direction of the end of the main rod 11 . a rod 112, and a support rod 12 is pivotally connected to the two sides of the main rod 11 , and a movable bracket 13 is pivotally connected to the end of the main rod 11 , and the movable bracket 13 is disposed at the opposite end of the main rod 11 . a pivoting portion 131; the fixing base 111 is configured to pivotally connect at least one movable rod 14 , and the movable rod 14 is provided with a second pivoting portion 141 at a opposite end of the fixing base 111 , the second pivoting portion 141 is opposite to The other end of the movable rod 14 is pivotally connected to at least one adjusting rod 15 . The adjusting rod 15 is generally U-shaped. A rod 151 is disposed between the two sides of the adjusting rod 15 for pivoting the first pivoting portion 131 .

The power source 20 is a linear actuator, and the power source 20 includes a telescopic rod 21, and the telescopic rod 21 is movable and retractable. The power source 20 is pivotally connected to the crossbar 112 at one end, and the power source 20 is connected to the crossbar 112. The telescopic rod 21 is coaxially connected to the adjusting rod 15 to the second pivoting portion 141. The power source 20 is electrically coupled to a control switch (not shown), and the control switch can be disposed on the light carrier. The right place.

At least one connecting rod 31 is disposed under the seat 30. The connecting rod 31 is pivotally connected to the second pivoting portion 141 corresponding to the movable rod 14 , and the connecting rod 31 is opposite to the other end for the supporting rod 12 The other end of the main rod 11 is pivotally connected.

The driving wheel set 40 includes at least one front wheel 41 and at least one rear wheel 42, that is, the driving wheel set 40 may be composed of a single front wheel 41 and two rear wheels 42, or two front wheels 41 and a single rear wheel The wheel 42 is composed of a single front wheel 41 and two rear wheels 42 as an example; the front wheel 41 is provided with a motor unit 411 for driving the front wheel 41 and the rear wheel 42 to move forward. The present invention has the function of an electric vehicle; the rear wheel 42 is pivotally connected to the end of the adjusting rod 15, and one of the front fork tubes 43 above the front wheel 41 is connected with a fixing rod 44, and the fixing rod 44 is opposite thereto. The other end of the front fork tube 43 is provided with a movable joint 45 for pivoting a handlebar 46; the front end of the main rod 11 is fastened to the inner side of the fixing rod 44, and the fixed rod 44 is also connected with a pedal bearing on the same side. The lever 47 is provided with a pedal 471 on each side of the pedal supporting rod 47. The handlebar 46 is pivotally connected to the movable lever 14 by an angle adjusting rod 48.

After the above structure is clarified, the following is a detailed description of the operation and principle of the present invention: as shown in the fourth drawing, the present invention is in a high sitting state, the main pole 11 and the movable bracket 13, the activity. A set of linkages is formed between the rod 14 and the adjustment rod 15 for connecting to the rear wheel 42, the seat 30, and the front wheel 41 and the handlebar 46; the sitting posture is suitable for general short-distance riding, the user When using this kind of sitting position in a crowded urban area, it has a higher vehicle visibility to increase driving safety.

When the user wants to take a long-distance ride, he can adjust it to a low sitting position to reduce the running wind resistance, and make the user's body appear semi-lying state, providing ride comfort; at this time, by The control switch controls the power source 20 to retract the telescopic rod 21 inwardly. At this time, when the main rod 11 is stationary, the second pivoting portion 141 is swung forward and drives the The movable rod 14 pivots with the connecting rod 31 and the adjusting rod 15, so that the angle between the movable rod 14 and the connecting rod 31 is at a maximum angle, and the supporting rod 12 and the movable bracket 13 are interlocked. Thereby, the axial distance between the front wheel 41 and the rear wheel 42 is increased to lower the height of the seat 30, and the inclination angle of the seat 30 is adjusted by the support rod 12; When the adjusting rod 48 is pivoted by the movable rod 14, the joint lever 46 is pivoted inwardly with the movable joint 45 as an axis for the user to hold, as shown in the fifth figure. At this time, the rider can ride in a reclining manner.

If the light carrier is to be adjusted back to the high sitting posture by the low sitting posture, the telescopic rod 21 is extended only by switching the control switch to push the second pivoting portion 141 to make each part By interlocking on the moving path opposite to the above, the original high sitting state can be restored.

The present invention uses an electric vehicle as an embodiment. Therefore, the motor unit 411 and the pedal carrier bar 47 and the pedal 471 are components required to exhibit the embodiment. However, the present invention is not limited to an electric vehicle, and thus the above These components are not essential. When the lightweight carrier is a general pedal driver, it is only necessary to replace the components with a general bicycle pedal.

While the invention has been described in terms of a preferred embodiment, the various modifications of the various embodiments can be made without departing from the spirit and scope of the invention. The above embodiments are merely illustrative of the invention and are not intended to limit the scope of the invention. All modifications and variations that are made without departing from the spirit of the invention are the scope of the invention.

10. . . Connecting rod set

11. . . Main pole

111. . . Fixed seat

112. . . Crossbar

12. . . Support rod

13. . . Movable bracket

131. . . First pivot

14. . . Movable rod

141. . . Second pivot

15. . . Adjustment rod

151. . . Strut

20. . . Power source

twenty one. . . Telescopic rod

30. . . Seat

31. . . Connecting rod

40. . . Drive wheel set

41. . . Front wheel

411. . . Motor unit

42. . . rear wheel

43. . . Front fork tube

44. . . Fixed rod

45. . . Active joint

46. . . Handlebar

47. . . Pedal carrying rod

471. . . pedal

48. . . Angle adjustment lever

The first figure is a perspective exploded view of the present invention.

The second figure is a partial exploded view of the present invention.

The third figure is a three-dimensional combination diagram of the present invention.

The fourth figure is a schematic diagram of the first state of use of the present invention.

The fifth figure is a schematic view of the second state of use of the present invention.

11. . . Main pole

12. . . Support rod

13. . . Movable bracket

14. . . Movable rod

141. . . Second pivot

15. . . Adjustment rod

20. . . Power source

30. . . Seat

31. . . Connecting rod

40. . . Drive wheel set

41. . . Front wheel

411. . . Motor unit

42. . . rear wheel

43. . . Front fork tube

44. . . Fixed rod

45. . . Active joint

46. . . Handlebar

47. . . Pedal carrying rod

471. . . pedal

48. . . Angle adjustment lever

Claims (8)

A variable wheelbase light carrier includes: a connecting rod set having at least one main rod, the main rod end pivotally connected to a movable bracket, and the movable bracket is oppositely pivotally connected to the other end of the main rod a pivoting portion, wherein the middle portion of the main rod is pivotally connected to the at least one movable rod, and the movable rod is provided with a second pivoting portion opposite to the other end of the main rod, the first pivoting portion and the second pivoting portion At least one power source is pivotally connected between the main pole and the second pivoting portion; a seat is provided with at least one connecting rod below the seat, and one end of the connecting rod is Connecting to the second pivoting portion; wherein the connecting rod is pivotally connected to the second pivoting portion, and a supporting rod is pivotally connected to each side of the main rod, and the supporting rod is opposite to the other end of the main rod Pivoting the other end of the connecting rod opposite to the second pivoting portion, the supporting rod is for supporting and adjusting the inclination angle of the connecting rod and the seat; and a driving wheel set comprising at least one front wheel and at least one a rear wheel pivotally connected to the end of the adjusting rod, and one of the front fork tubes above the front wheel is connected to a solid a rod, the front end of the main rod is connected to the fixing rod; wherein the fixing rod is provided with a movable joint at the other end of the front fork tube for pivoting a handle rod, and the handle rod is pivotally connected with the movable rod An angle adjustment rod for adjusting an inclination angle of the handlebar; thereby, a pair of link mechanisms are formed between the main rod and the movable bracket, the movable rod and the adjustment rod, and the power source is used to control the group The opening and closing angle between the link mechanisms is used to change the axial distance between the front wheel and the rear wheel, thereby adjusting the tilt angle and the sitting posture of the seat. The variable wheelbase light carrier of claim 1, wherein the main pole is provided with a fixing seat for pivoting the movable rod. The variable wheelbase light carrier of claim 1, wherein the main rod is generally U-shaped, and a cross bar is disposed between the two sides of the main rod, and the power source is opposite to the second pivot The other end of the power unit is pivotally connected to the crossbar, and the other end of the power source is coaxially connected to the adjusting rod and the second pivoting portion is opposite to the other end of the movable rod. The variable wheelbase light carrier of claim 1, wherein the adjusting rod is U-shaped, and a rod is arranged between the two sides of the adjusting rod for the movable bracket to be opposite to the main rod The other end is pivotally connected. The variable wheelbase light carrier of claim 1, wherein the power source is a linear actuator, and the linear actuator comprises a telescopic rod, the telescopic rod is movable and retractable. To control the opening and closing of the linkage mechanism. The variable wheelbase light carrier of claim 1, wherein the power source is electrically coupled to a control switch. The variable wheelbase light carrier of claim 1, wherein the light carrier is a tricycle having two rear wheels, and the rear wheel is pivotally connected at both ends of the adjusting rod. . The variable wheelbase light carrier of claim 1, wherein the front wheel is provided with a motor unit for driving the front wheel and the rear wheel to advance.