TWM612805U - Front-wheel driven bicycle - Google Patents

Abstract

A front-wheel drive bicycle includes a frame unit, a drive unit, a steering unit, and a seat unit. The frame unit includes a frame body, a front fork rod, a rear fork rod, and a front wheel and a rear wheel pivoted on the front fork rod and the rear fork rod, respectively. The driving unit is arranged on the front fork rod and can be stepped on to drive the front wheel to rotate around its own axis to move forward. The seat unit includes a connecting rod, an extension rod, a support rod and a cushion. The connecting rod is vertically arranged on the frame body, which can prevent the front wheel from being stuck on the ground stably due to the principle of leverage, and the extension rod is extended backwards by the connecting rod, which can increase the horizontal distance between the seat cushion and the front wheel Therefore, the length of the frame body can be reduced, and the volume and weight of the front-wheel drive bicycle can be reduced.

Description

Front-wheel drive bicycle

This model relates to a bicycle, especially a front-wheel drive bicycle.

Referring to Figure 1, the Republic of China Invention Patent Application No. TW 101127275 discloses an existing front-wheel-drive bicycle, which includes a frame 11, a front fork lever 12 and a rear fork lever 13 arranged on the frame, respectively pivoted A front wheel 14 and a rear wheel 15 on the front fork rod 12 and the rear fork rod 13, a driving unit 16 arranged on the front fork rod 12 to drive the front wheel 14 forward, and a driving unit 16 that faces backward from the frame 11 and A cushion unit 17 extending upward, and a handle bar 18 pivoted on the frame 11 and located above the front wheel 14.

When a user rides on the seat cushion unit 17, the weight of the user exerts a downward force on the seat cushion unit 17, and because the frame 11, the front fork lever 12 and the seat cushion The configuration structure of the unit 17, and the cushion unit 17 is extended backward and upward from the frame 11, therefore, the force will cause an upward moment applied to the front wheel 14 due to the principle of leverage, which in turn leads to When riding, the front wheel 14 cannot fit on the ground stably, resulting in unsmooth riding.

Referring to Figure 2, the Republic of China Invention Patent No. TW 201620771A discloses another existing front-wheel-drive bicycle. By changing the cushion unit 17 to extend upward from the frame 11, it can be avoided during riding. The front wheel 14 cannot fit the ground stably, but a long horizontal distance is required between the cushion unit 17 and the front wheel 14 to match the ergonomics during pedaling. Therefore, the other existing front wheel as a whole Drive bicycles are large in size and heavy in weight, which does not conform to the trend of lightweight bicycles in recent years.

Therefore, the purpose of the present invention is to provide a front-wheel drive bicycle that can overcome the disadvantages of the prior art.

Therefore, the front-wheel drive bicycle of the present invention includes a frame unit, a drive unit, a steering unit, and a seat unit.

The frame unit includes a frame body, a front fork rod and a rear fork rod respectively connected to both ends of the frame body, and a front wheel and a rear wheel pivoted on the front fork rod and the rear fork rod, respectively wheel. The driving unit is arranged on the front fork rod and can be stepped on to drive the front wheel to rotate around its own axis to move forward. The steering unit includes a handle rod rotatably pivoted on the frame body and located above the front wheel. The seat unit includes a connecting rod substantially vertically arranged on the frame body and located between the front fork rod and the rear fork rod, an extension rod extending backward from the connecting rod, and an extension rod extending from the extension rod. A support rod extending upwards from one end of the connecting rod, and a cushion arranged above the support rod.

The effect of the present invention is that by arranging the connecting rod and the extension rod, since the connecting rod is vertically arranged on the frame body, it can avoid that the front wheel cannot be stably attached to the ground due to the principle of leverage, and the extension rod The connecting rod extends rearward, so the horizontal distance between the seat cushion and the front wheel can be increased without increasing the length of the frame body to conform to the ergonomics during pedaling, so the volume and weight of the front-wheel drive bicycle can be reduced.

3 and 4, an embodiment of the front-wheel drive bicycle of the present invention includes a frame unit 2, a drive unit 3, a steering unit 4, and a seat unit 5.

The frame unit 2 includes a frame body 21 extending along a front-rear direction X, a front fork rod 22 and a rear fork rod 23 respectively connected to two opposite ends of the frame body 21 along the front-rear direction X, and respectively A front wheel 24 and a rear wheel 25 pivoted on the front fork rod 22 and the rear fork rod 23.

The driving unit 3 is disposed on the front fork lever 22 and can be stepped on to drive the front wheel 24 to rotate around its own axis to move forward.

The steering unit 4 includes a handle bar 41 rotatably pivoted to the frame body 21 and located above the front wheel 24, a transmission member 42 connected to the handle bar 41, and a transmission member 42 connected to the transmission member 42 and disposed on the The steering module 43 above the rear wheel 25 and capable of interlocking the rear fork lever 23 to rotate in a direction opposite to the rotation direction of the handle lever 41.

The seat unit 5 includes a connecting rod 51 substantially vertically arranged on the frame body 21 and located between the front fork rod 22 and the rear fork rod 23, and an extension rod extending backward from the connecting rod 51 52. A support rod 53 extending upward and downward from the end of the extension rod 52 opposite to the connecting rod 51, and a support rod 53 arranged above the support rod 53 and at least partially located on the steering module 43 and the rear wheel 25 54 on the top of the cushion. In the present embodiment, the supporting rod 53 is inclined and extended in an upward and backward direction from an end of the extension rod 52 opposite to the connecting rod 51.

The extension rod 52 extends along the front-to-rear direction X, and has a first connecting portion 521 for the connecting rod 51 to move along its extension direction to penetrate and generate positioning, and a relatively close to the connecting rod 51 and connected to the first connecting part 521. The first pipe 522 of the connecting portion 521, a second pipe 523 that is relatively far away from the connecting rod 51 and can movably pass through the first pipe 522, and a second pipe 523 that connects the first pipe 522 and the second pipe 523 And enable the second tube 523 to be positioned relative to the first tube 522 along the front and rear direction X, and a front and rear adjuster 524 that is opposite to the first connecting portion 521 and connects to the second tube 523 and supplies the support rod 53 movably penetrates along its extending direction and generates a second connecting portion 525 that is positioned.

In this embodiment, the first connecting portion 521 is arc-shaped around the first tube 522, and two opposite ends of the first connecting portion 521 can be screwed through two screws (not shown) to make the first connection The portion 521 presses the connecting rod 51 to position the connecting rod 51, but is not limited to this. The connection manner of the second connecting portion 525 and the supporting rod 53 is similar to the first connecting portion 521 and the connecting rod 51, and will not be repeated here.

In addition, in this embodiment, the second tube 523 has a plurality of fixing holes 526 spaced along the front and rear direction X, and the front and rear adjuster 524 passes through the first tube 522 and can be screwed to one of the fixing holes 526. , So that the second tube 523 is positioned relative to the first tube 522 along the front-to-rear direction X.

When a user (not shown) rides on the seat cushion 54, the weight of the user is transmitted to the connecting rod 51 through the support rod 53, the extension rod 52, and is further transmitted to the frame body 21, the The front wheel 24 and the rear wheel 25, and since the connecting rod 51 is vertically arranged on the frame body 21, it is possible to avoid the front wheel 24 from being unable to be stably attached to the ground 9 due to the principle of leverage.

In addition, since the extension rod 52 is extended backwards from the connecting rod 51, and the second pipe 523 can move and be positioned relative to the first pipe 522 along the front-to-rear direction X, only the second pipe 523 needs to be operated. Relative to the first pipe 522 from the position shown in FIG. 3 to the position shown in FIG. 4, the seat cushion 54 can be driven to move backward, so the length of the frame body 21 can be increased without increasing the length of the frame body 21. The horizontal distance between the seat cushion 54 and the front wheel 24 conforms to the ergonomics during pedaling, which can effectively reduce the volume and weight of the front wheel drive bicycle.

In addition, because the support rod 53 is inclined upward and backward from the end of the extension rod 52 opposite to the connecting rod 51, and the support rod 53 can move along the direction of its extension and pass through the second The second connecting portion 525, therefore, when the user's height is relatively high, the support rod 53 can be adjusted to move backward and upward from the solid line position shown in FIG. 3 relative to the second connecting portion 525 to the position shown in FIG. 3 The position shown by the two-dot chain line, in this way, not only can the height of the cushion 54 be adjusted to fit the user’s leg length, but also the horizontal distance between the cushion 54 and the front wheel 24 can be increased at the same time. The second tube 523 moves relative to the first tube 522 in the front-to-rear direction X, and the relative position between the cushion 54 and the driving unit 3 can be easily adjusted to conform to the user’s body shape, so that the user More comfortable when riding.

It is worth mentioning that in other embodiments, a buffer (not shown) may be provided between the support rod 53 and the frame body 21 to disperse the weight of the user and reduce the weight applied to the frame. The moment of the extension rod 52.

It should be noted that, in this embodiment, the front and rear adjuster 524 passes through the first tube 522 and is screwed to one of the fixing holes 526, so that the second tube 523 is opposite to the front and rear direction X. The first tube 522 is positioned, but it is not limited to this. As shown in FIG. 5, the front and rear adjuster 524 can also be a quick-release pipe clamp. By adjusting the front and rear adjuster 524, it is wound around the first tube 522. The tightening force causes the second tube 523 to be positioned relative to the first tube 522 along the front-to-rear direction X.

In summary, since the connecting rod 51 is vertically arranged on the frame body 21 of the new front-wheel drive bicycle of the present invention, it can avoid the front wheel 24 being unable to stably adhere to the ground 9 due to the principle of leverage. In addition, since the extension rod 52 is extended rearward from the connecting rod 51, and the second tube 523 can move and be positioned relative to the first tube 522 in the front-to-rear direction X, there is no need to increase the length of the frame body 21 The length can increase the horizontal distance between the seat cushion 54 and the front wheel 24 to conform to the ergonomics during pedaling, and can reduce the volume and weight of the front-wheel drive bicycle, so it can indeed achieve the purpose of new cost.

However, the above are only examples of the present model. When the scope of implementation of the present model cannot be limited by this, all simple equivalent changes and modifications made in accordance with the patent scope of the present model application and the contents of the patent specification still belong to This new patent covers the scope.

2: Frame unit 21: Frame body 22: Front fork lever 23: Rear fork lever 24: front wheel 25: rear wheel 3: drive unit 4: Steering unit 41: handle bar 42: Transmission parts 43: steering module 5: Seat unit 51: connecting rod 52: Extension rod 521: first connection part 522: The first pipe 523: second pipe fitting 524: Front and rear adjusters 525: second connection part 526: fixed hole 53: support rod 54: cushion 9: Ground X: front and rear direction

The other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, among which: Figure 1 is a schematic side view of an existing front-wheel drive bicycle disclosed in the Republic of China Invention Patent No. TW 101127275; Figure 2 is a schematic side view of another conventional front-wheel drive bicycle disclosed in the Republic of China Invention Patent No. TW 201620771A; 3 is a schematic side view of an embodiment of the new front-wheel drive bicycle, illustrating that a support rod of this embodiment can move backward and upward relative to a second connecting portion; Fig. 4 is a schematic side view illustrating that a second pipe member of this embodiment can move relative to a first pipe member in a front-to-rear direction; and Fig. 5 is a diagram similar to Fig. 4, illustrating a modification of a front and rear adjuster of this embodiment.

2: Frame unit

21: Frame body

22: Front fork lever

23: Rear fork lever

24: front wheel

25: rear wheel

3: drive unit

4: Steering unit

41: handle bar

42: Transmission parts

43: steering module

5: Seat unit

51: connecting rod

52: Extension rod

521: first connection part

522: The first pipe

523: second pipe fitting

524: Front and rear adjusters

525: second connection part

526: fixed hole

53: support rod

54: cushion

9: Ground

X: front and rear direction

Claims (5)

A front-wheel drive bicycle, including: A frame unit includes a frame body, a front fork rod and a rear fork rod respectively connected to both ends of the frame body, and a front wheel and a rear fork rod pivoted to the front fork rod and the rear fork rod, respectively rear wheel; A driving unit, which is arranged on the front fork rod and can be stepped on to drive the front wheel to rotate and move forward on its own axis; A steering unit including a handle bar rotatably pivoted on the frame body and located above the front wheel; and A seat unit includes a connecting rod substantially vertically arranged on the frame body and located between the front fork rod and the rear fork rod, an extension rod extending backward from the connecting rod, and an extension rod extending from the connecting rod. The rod is opposite to the supporting rod extending upward at one end of the connecting rod, and a cushion is arranged above the supporting rod. The front-wheel drive bicycle according to claim 1, wherein the support rod is inclined and extended in an upward and backward direction from an end of the extension rod opposite to the connecting rod. The front-wheel drive bicycle according to claim 1, wherein the extension rod of the seat unit has a first tube relatively close to the connecting rod, a relatively far away from the connecting rod and movably passing through the first tube. A second pipe piece of a pipe piece, and a front and rear adjuster that connects the first pipe piece and the second pipe piece and enables the second pipe piece to be positioned relative to the first pipe piece along a front-to-back direction. The front-wheel drive bicycle according to claim 1, wherein the extension rod of the seat unit has a first connecting portion for the connecting rod to move along the extension direction of the connecting rod and to generate positioning, and a first connecting portion opposite to the first connecting portion. A connecting portion is used for the support rod to move along the extending direction of the support rod to pass through and generate a positioned second connecting portion. The front-wheel drive bicycle according to claim 1, wherein the steering unit further includes a transmission member connected to the handlebar, and a transmission member connected to the transmission member and arranged above the rear wheel and capable of interlocking the rear fork lever to move in the opposite direction For the steering module that rotates in the rotation direction of the handle bar, the seat cushion is at least partially located above the steering module and the rear wheel.

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