KR101166541B1 - Bicycle with height control function - Google Patents

Abstract

The present invention relates to a bicycle having a lift function, and more particularly, the height of the steering wheel portion, the saddle forming the seating space for the occupant, and the pedal portion receiving the driving force from the occupant are adjusted in one step. The present invention relates to a bicycle having a lift function configured to freely adjust a ride height of a passenger while driving.

Bicycle, saddle, handlebars, body, scissor arm, lifting frame with lift function

Description

Bicycle with lift function {Bicycle with height control function}

The present invention relates to a bicycle having a lift function, and more particularly, the height of the steering wheel portion, the saddle forming the seating space for the occupant, and the pedal portion receiving the driving force from the occupant are adjusted in one step. The present invention relates to a bicycle having a lift function configured to freely adjust a ride height of a passenger while driving.

In general, a bicycle is provided with front and rear wheels in front and rear forks installed in the front and rear of the vehicle body, and a pedal unit is provided at the center of the vehicle body to provide driving force to the rear wheel or the front wheel, The saddle providing the boarding space is installed.

In addition, the pedal unit is provided with a drive sprocket for transmitting the driving force applied through the pedal to the outside, a driven sprocket is installed on the rear wheel or the front wheel, between the driven sprocket and the drive sprocket The chain is installed so that the driving force of the pedal unit is provided to the front wheel or the rear wheel through the chain and the sprocket.

By the way, the conventional bicycle is installed in a state in which each component is fixed to the vehicle body, and always maintain a constant height, so that the occupants feel a monotonous feeling.

 Of course, in recent years, bicycles that can easily set the height of the saddle fixed to the vehicle body through hydraulic or pneumatic has been proposed, by lifting the saddle height while driving somewhat to solve the monotonous feeling, but the bicycle lift height of the saddle There is a limit that the constraint is generated by the distance to the pedal unit.

The present invention has been made to solve the above problems, the handle portion to facilitate the steering function of the front wheel, the saddle to form a seating space for the occupant, and the height of the pedal portion to receive the driving force from the occupant is the expansion and contraction of the hydraulic cylinder By providing a bicycle having a lift function that is adjusted at a time and configured to allow the occupant to adjust the boarding height freely while driving.

The above object is achieved by the following constitutions provided in the present invention.

Bicycle having a lift function according to the invention,
A vehicle body 10 in which a handle mounting hole 12 is formed in the first half, and a rear fork 11 is integrally formed in the second half; The shaft is installed in the handle mounting hole 12 formed in the vehicle body 10, the front fork 32 is formed on the lower portion of the handle shaft 31, the handle member 33 is installed on the handle shaft 31 Handle portion 30 and; A front wheel 34 axially mounted to the front fork 32 of the handle portion 30; A rear wheel 14 that is axially mounted to the rear fork 11 and rotates with a driving force applied through a driven sprocket 15; And a crank shaft 21 which is rotated by receiving a driving force from the occupant through the pedals 22 installed at both ends, and is fixed to the crank shaft 21 to transmit the driving force to the driven sprocket 15 of the rear wheel 14. In the bicycle configured to include a pedal unit 20 configured to include a drive sprocket 23,
A first scissor arm 35 having a folding and unfolding function is installed between the handle shaft 31 and the handle member 33 installed in the handle mounting hole 12 of the vehicle body 10, and the vehicle body 10 and A second scissor arm 36 having a folding and cutting function is provided between the saddle 40, and the handle member 33 according to the folding or unfolding of the first scissor arm 35 and the second scissor arm 36. And the height of the saddle 40 is adjusted,
The vehicle body 10 is connected via a drive sprocket 23 and a chain 16a of the pedal unit 20 and through a driven sprocket 15 and a chain 16b provided on the rear wheel 14. While the auxiliary sprocket 13 is connected to the shaft, the switching rod 50 is installed between the auxiliary sprocket shaft 13c and the crank shaft 21 of the pedal unit 20,
The lifting frame 60 connecting the first scissor arm 35 and the second scissor arm 36 is rotated to the crank shaft 21 of the pedal unit 20 through a pair of connecting ends 61a and 61b. A hydraulic cylinder 70 having a telescopic function is installed between the elevating frame 60 and the vehicle body 10, and the pedal unit 20 is assisted by the telescopic action of the hydraulic cylinder 70. The height of the pedal unit 20 and the lifting frame fixed to the pedal unit 20 is adjusted by turning in the forward or reverse direction about the plastic shaft 13c, while connecting end 61a of the lifting frame 60 is provided. The first scissor arm 35 and the second scissor arm 36 connected to 61b are folded or unfolded by the lifting and lowering of the lifting frame 60,
When the pedal unit 20 and the lifting frame 60 are raised, the first scissor arm 35 and the second scissor arm 36 are unfolded to raise the handle member 33 and the saddle 40 together. When the part 20 and the lifting frame 60 are lowered, the first scissor arm 35 and the second scissor arm 36 are folded so that the handle member 33 and the saddle 40 are also lowered together. .

Preferably, the hydraulic cylinder 70 is stored in the storage tank 72 through the hydraulic pump 71 is rotated by the rotational force applied from the pedal unit 20, the front wheel 34, or the rear wheel 14 It is configured to supply along the supply pipe (70a), the supply pipe (70a) is provided with a control valve 73 for controlling the supply direction and supply of the hydraulic oil supplied to the hydraulic cylinder 70 by the hydraulic pump (71). .

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As described above, the present invention provides a lift structure in which the heights of the pedal unit, the handle member, and the saddle are collectively adjusted, and the lift structure lowers the height in the starting state so that a stable start is possible. The bicycle has been proposed to increase the height of the pedal unit, saddle and handle member to ensure a stable field of view.

In particular, in the present invention, in implementing such a bicycle, a switching rod is installed between the pedal unit and the auxiliary sprocket, and the pedal unit pivots about the auxiliary sprocket shaft to move up and down, thereby between the pedal unit and the auxiliary sprocket. It enables stable power transmission without adjusting the length of the chain to be formed.

In addition, in the present invention, a scissor arm is provided on the handle member and the saddle, and the height adjustment of the handle member and the saddle is made more stable by folding and deploying the scissor arm.

In addition, the lift structure according to the present invention has an advantage that the height adjustment width is much larger than the lift structure installed in the existing bicycle.

Hereinafter, with reference to the accompanying drawings will be described in detail a bicycle having a lift function proposed as a preferred embodiment of the present invention.

1 is a view showing the overall configuration of a bicycle having a lift function proposed as a preferred embodiment in the present invention, Figure 2 and Figure 3 is a functional state diagram showing sequentially the lift process of the bicycle proposed in the preferred embodiment of the present invention to be.

In the bicycle 1 having a lift function proposed as a preferred embodiment of the present invention, a handle mounting hole 12 is basically formed in the first half, and the rear body 11 is integrally formed with the rear fork 11 at the second half. ; The shaft is installed in the handle mounting hole 12 formed in the vehicle body 10, the front fork 32 is formed on the lower portion of the handle shaft 31, the handle member 33 is installed on the handle shaft 31 Handle portion 30 and; A front wheel 34 axially mounted to the front fork 32 of the handle portion 30; A rear wheel 14 installed on the rear fork 11 and rotating with a driving force applied through a driven sprocket 15; And a crank shaft 21 which is rotated by receiving a driving force from the occupant through the pedals 22 installed at both ends, and is fixed to the crank shaft 21 to transmit the driving force to the driven sprocket 15 of the rear wheel 14. It comprises a pedal unit 20 including a drive sprocket 23 to be.

When the bicycle 1 according to the present embodiment configured as described above provides a driving force to the pedal unit 20 in a state where the occupant rides on the vehicle body 10 through the saddle 40, the driving force is determined by the vehicle body 10. It is transmitted to the rear wheel 14 via the driven sprocket 15 provided in the rear fork 11, and the vehicle body 10 is advanced by the driving of the rear wheel 14. At this time, the occupant switches the handle member 33 of the handle portion 30 on which the front wheel 34 is installed through the front fork 32 to the left and right, and adjusts the traveling direction of the front wheel 34 so that The direction of control is controlled.

As shown in the drawing, an auxiliary sprocket 13 is installed at one point of the vehicle body 10 higher than the phase of the driven sprocket 15, and the pedal unit 20 is provided through the auxiliary sprocket 13. The driving force applied through the drive sprocket 23 is configured to be applied to the driven sprocket 15 of the rear wheel 14.

The auxiliary sprocket 13 is connected to the auxiliary sprocket shaft 13c so that the drive sprocket 23 and the driven sprocket 15 can be individually connected to the chains 16a and 16b. The pair of sprocket members 13a and 13b have a structure in which they are disposed.

On the other hand, in this embodiment, the lift structure which collectively raises and lowers the pedal part 20, the handle member 33, and the saddle 40 of the handle part 30 to the bicycle 1 comprised in this way is provided.

When the lift structure is provided in this way, since the height of the handle member 33, the pedal unit 20, and the saddle 40 is controlled in a collective manner, the occupant's own driving process is controlled. The phase can be adjusted freely.

To this end, in the present embodiment, between the handle shaft 31 and the handle member 33 installed in the handle mounting hole 12 of the vehicle body 10 is provided with a first scissor arm 35 having a folding and unfolding function A second scissor arm 36 having a folding and cutting function is provided between the vehicle body 10 and the saddle 40.

Here, the scissor arms 35 and 36 are arranged to cross the pair of arm members 35a and 36a, and the intersections thereof are connected through hinge pins H so that the lengths change according to folding or unfolding. will be.

Then, as in this embodiment, the first scissor arm 35 and the second scissor arm 36 between the handle shaft 31 and the handle member 33 and between the vehicle body 10 and the saddle 40. When installed, the height of the handle member 33 and the saddle 40 is adjusted by folding or unfolding the first scissor arm 35 and the second scissor arm 36.

In addition, in the present embodiment, the switching rod 50 is installed between the auxiliary sprocket shaft 13c and the crank shaft 21 of the pedal unit 20 in a rotational structure, and is connected to the auxiliary shaft through the chain 16a. The separation distance between the sprocket 13 and the drive sprocket 23 of the pedal unit 20 is kept constant by the switching rod 50 at all times.

Therefore, when the switch rod 50 is switched in the forward direction, the pedal unit 20 turns around the auxiliary sprocket shaft 13c and ascends, and when the switch rod 50 is switched in the reverse direction, the pedal unit 20 pivots about the auxiliary sprocket shaft 13c and descends.

At this time, since the separation distance between the auxiliary sprocket 13 and the drive sprocket 23 of the pedal unit 20 is always maintained by the switching rod 50, even if the pedal unit 20 is elevated, the chain ( The driving force of the driving sprocket 23 can be stably transmitted to the driven sprocket 15 through the auxiliary sprocket 13 without changing the length of 16a).

According to this embodiment, the forward and reverse switching of the switching rod 50 for determining the phase of the pedal unit 20 is caused by the stretching action of the hydraulic cylinder 70 provided between the switching rod 50 and the vehicle body 10. Is done.

Referring to the drawings, in this embodiment, the rotary shaft 71a of the hydraulic pump 71 is brought into close contact with the front wheels 34 so that the hydraulic pump 71 receives a rotational force from the front wheels 34 through the rotary shaft 71a. The hydraulic oil stored in 72) is supplied to the hydraulic cylinder 70, but if necessary, the rotary shaft of the hydraulic pump is in close contact with or connected to a pedal unit, an auxiliary sprocket, a driven sprocket, or a rear wheel to a storage tank. It can be configured to supply the stored hydraulic oil to the hydraulic cylinder.

In addition, a supply valve 70a formed between the hydraulic pump 71 and the hydraulic cylinder 70 is provided with a control valve 73 for controlling the supply direction and supply of the hydraulic oil, and operating the control valve 73. By this, the supply direction and supply availability of the hydraulic oil supplied through the hydraulic pump 71 are controlled. The technique for planning the expansion and contraction of the hydraulic cylinder 70 by driving and manipulating the hydraulic pump 71 and the control valve 73 is a well-known technique in the art, so the detailed description thereof is omitted for convenience of description. .

Therefore, when the hydraulic cylinder 70 is extended by the supply of the hydraulic oil, the switching rod 50 is switched in the forward direction, and the pedal unit 20 is turned upward by pivoting about the auxiliary sprocket shaft 13c. do.

On the contrary, when the hydraulic cylinder 70 contracts, the switching rod 50 is switched in the reverse direction so that the pedal unit 20 pivots downward about the auxiliary sprocket shaft 13c and descends.

On the other hand, in the present embodiment, the folding or unfolding of the first scissor arm 35 and the second scissor arm 36 supporting the handle member 34 and the saddle 40 by lifting and lowering the pedal unit 20 is performed. The handle member 34 and the saddle 40 are collectively raised by the rising of the pedal unit 20, and the handle member 34 and the saddle ( 40) is collectively lowered.

To this end, in the present embodiment, the first scissor arm 35 and the second scissor arm 36 are connected to the crank shaft 21 of the pedal unit 20 through a pair of connecting ends 61a and 61b. One lifting frame 60 is installed in a rotational structure.

Accordingly, as shown in FIGS. 2 and 3, the pedal unit 20 and the lifting frame 60 are rotated in the forward or reverse direction about the auxiliary sprocket shaft 13c by the stretching action of the hydraulic cylinder 70. The height of the pedal unit 20 and the lifting frame 60 is collectively adjusted.

At this time, since the first scissor arm 35 and the second scissor arm 36 connected to the connection ends 61a and 61b of the elevating frame 60 are folded or unfolded, the pedal unit 20 and the elevating frame 60 are separated. When this rises, the first scissor arm 35 and the second scissor arm 36 are unfolded to raise the handle member 33 and the saddle 40 together, and the pedal unit 20 and the lifting frame 60 are lowered. When the first scissor arm 35 and the second scissor arm 36 are folded, the handle member 34 and the saddle 40 are also lowered together.

Thus, in the bicycle 1 having the lift function according to the present embodiment, when the hydraulic cylinder 70 is extended, the pedal unit 20, the handle member 34, and the saddle 40 are raised together to raise the occupant's phase. In addition, when the hydraulic cylinder 70 is contracted, the pedal unit 20, the handle member 34 and the saddle 40 are lowered together so that the occupant's phase is lowered, so that the occupant controls the expansion and contraction of the hydraulic cylinder 70. By controlling through 73, it is possible to freely set its own phase.

1 shows the overall configuration of a bicycle having a lift function proposed as a preferred embodiment in the present invention,

2 and 3 is a functional state diagram showing sequentially the lift process of the bicycle proposed in the preferred embodiment of the present invention.

**** Explanation of reference numerals for main parts of drawings

1. Bicycle

10. Body 11. Rear fork

12. Handle Installer 13. Auxiliary Sprocket

13a, 13b. Sprocket member 13c. Secondary sprocket shaft

14. Rear wheel 15. Driven sprocket

15a. Rear axle

16a, 16b. chain

20. Pedal section 21. Crankshaft

22. Pedal 23. Drive Sprocket

30. Handle part 31. Handle shaft

32. Front fork 33. Handle member

34. Front wheels 35. First scissor arm

36. Second scissor arm 40. Saddle

50. Changing rod

60. Elevating frames 61a, 61b. Connection

70. Hydraulic cylinder 70a. Supply pipe

71. Hydraulic pump

72. Storage Tank 73. Control Valve

Claims (2)

A vehicle body 10 in which a handle mounting hole 12 is formed in the first half, and a rear fork 11 is integrally formed in the second half; The shaft is installed in the handle mounting hole 12 formed in the vehicle body 10, the front fork 32 is formed on the lower portion of the handle shaft 31, the handle member 33 is installed on the handle shaft 31 Handle portion 30 and; A front wheel 34 axially mounted to the front fork 32 of the handle portion 30; A rear wheel 14 that is axially mounted to the rear fork 11 and rotates with a driving force applied through a driven sprocket 15; And a crank shaft 21 which is rotated by receiving a driving force from the occupant through the pedals 22 installed at both ends, and is fixed to the crank shaft 21 to transmit the driving force to the driven sprocket 15 of the rear wheel 14. In the bicycle configured to include a pedal unit 20 configured to include a drive sprocket 23, A first scissor arm 35 having a folding and unfolding function is installed between the handle shaft 31 and the handle member 33 installed in the handle mounting hole 12 of the vehicle body 10, and the vehicle body 10 and A second scissor arm 36 having a folding and cutting function is provided between the saddle 40, and the handle member 33 according to the folding or unfolding of the first scissor arm 35 and the second scissor arm 36. And the height of the saddle 40 is adjusted, The vehicle body 10 is connected via a drive sprocket 23 and a chain 16a of the pedal unit 20 and through a driven sprocket 15 and a chain 16b provided on the rear wheel 14. While the auxiliary sprocket 13 is connected to the shaft, the switching rod 50 is installed between the auxiliary sprocket shaft 13c and the crank shaft 21 of the pedal unit 20, The lifting frame 60 connecting the first scissor arm 35 and the second scissor arm 36 is rotated to the crank shaft 21 of the pedal unit 20 through a pair of connecting ends 61a and 61b. A hydraulic cylinder 70 having a telescopic function is installed between the elevating frame 60 and the vehicle body 10, and the pedal unit 20 is assisted by the telescopic action of the hydraulic cylinder 70. The height of the pedal unit 20 and the lifting frame fixed to the pedal unit 20 is adjusted by turning in the forward or reverse direction about the plastic shaft 13c, while connecting end 61a of the lifting frame 60 is provided. The first scissor arm 35 and the second scissor arm 36 connected to 61b are folded or unfolded by the lifting and lowering of the lifting frame 60, When the pedal unit 20 and the lifting frame 60 are raised, the first scissor arm 35 and the second scissor arm 36 are unfolded to raise the handle member 33 and the saddle 40 together. When the part 20 and the lifting frame 60 are lowered, the first scissor arm 35 and the second scissor arm 36 are folded so that the handle member 33 and the saddle 40 are also lowered together. Bicycle 1 with lift function. According to claim 1, wherein the hydraulic cylinder 70 is stored in the storage tank 72 through the hydraulic pump 71 is rotated by applying the rotational force from the pedal unit 20, the front wheel 34, or the rear wheel (14). The hydraulic oil is configured to be supplied along the supply pipe 70a, and the control pipe 73 controls the supply direction and supply of the hydraulic oil supplied to the hydraulic cylinder 70 by the hydraulic pump 71 in the supply pipe 70a. Bicycle (1) having a lift function, characterized in that installed.

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