WO2012037800A1

WO2012037800A1 - Foldable bicycle capable of being pulled and pushed

Info

Publication number: WO2012037800A1
Application number: PCT/CN2011/071552
Authority: WO
Inventors: 卢一雄
Original assignee: Lu I-Shyong
Priority date: 2010-09-21
Filing date: 2011-03-07
Publication date: 2012-03-29
Also published as: CN201842198U

Abstract

A foldable bicycle capable of being pulled and pushed has a frame (10) on which a foldable structure (40) is arranged. The foldable structure (40) divides the frame (10) into a fixed section (12) and a foldable section (11) and enables the foldable section (11) to be folded toward to the fixed section (12) between an extended position and a folded position. The fixed section (12) includes a seatpost (121) and a five way union (122). An auxiliary wheelset (20) is arranged under the five way union (122) to pull and push the bicycle after it is folded. Two cranks (30) are separately pivoted at either sides of the five way union (122). Each crank (30) can rotate along a circular trace. In the folded position, the foldable section (11) is not located at the moving trace path of the cranks (30). Therefore, after being folded, the foldable section (11) does not impact on the rotating crank (30), thus enabling a forward push and backward pull of the bicycle.

Description

Push-pull folding bicycle

Technical field

The present invention relates to a folding bicycle or an electric bicycle, and more particularly, a vehicle that does not need to be in a neutral configuration of the gear tray assembly, so that the crank does not hit the folded vehicle when it is rotated in the reverse direction. Shelf for the bicycle to be forwarded and reversed. Background technique

The use of bicycles, in addition to general riding, when encountering roads or occasions where bicycles cannot be used, it is necessary to use the shifting method to move bicycles. The problems often encountered when users are moving bicycles. In view of this, the applicants have used bicycles in the past. Developed patents related to folding design, such as China TW New Patent Certificate No. M380267, No. M352497, No. M289405, No. M384146, No. M384147, and Invention Patent No. 1309618, etc., by folding Designed to facilitate the bicycle to be moved and stored, and equipped with an auxiliary wheel under the car body, so that the car body can be stably stood and moved, and when the car body is folded, it is more convenient to carry, without the need to carry it again, so that the operation is more On the other hand, even a storage rack with a carrying function is installed on the vehicle body, so that the folded bicycle can be used as a storage or carrying cart to play the function of moving objects for multi-purpose use. the goal of.

However, when the folded bicycle is traveling forward in two rounds, the crank and the pedal will not rotate with each other, but when the two wheels reverse backwards, the crank and the pedal will reversely rotate, and then the frame will be generated. The blocking of the block prevents the pedal from colliding with the frame or the ground, so that the body cannot be moved. Therefore, when the folded bicycle is used as a storage cart, it can only be pushed in one direction, which limits the use.

In order to solve this problem, the applicant has developed a neutral structure for mounting on the toothed disc, for example, China TW New Patent Certificate No. M342338 and No. M331057, to solve the problem of bicycle travel in the future by using the neutral structure principle. When the pedal and the crank are reversed, when the bicycle is switched to the neutral position, when the user drags the bicycle and travels backward, the crank and the pedal are kept still, thereby facilitating the free movement of the bicycle before and after; With this neutral structure, the gear plate structure must be changed. The gear position of the bicycle shifting unit is first switched to the neutral gear position to generate the crank and the pedal positioning does not rotate. Therefore, the structure is slightly more complicated, so there is still a Awkward space.

In general, the disadvantages of the prior art are generally included in the above-mentioned folding bicycle. When the two wheels are reversed and traveled backward, the crank and the pedal are reversely rotated, thereby causing a jamming obstacle with the frame, and causing the pedal to collide with the frame. Or the ground causes the car body to be unable to move, and therefore can only be implemented in one direction, although the above problem can be solved by adding a neutral structure, but the toothed disc structure must be changed; and in view of solving the above disadvantages, the present invention proposes a Push and pull folding bikes. Summary of the invention

The object of the present invention is to provide a push-pull folding bicycle, which has the advantages of simple structure, convenient assembly and convenient folding, without the need for the neutral structure of the toothed disc set device, so that the crank does not hit the folded state when the crank is rotated in the reverse direction. The frame allows the bicycle to be forwarded and reversed, and does not affect the original structure and strength, but also avoids collision, damage, and balance.

In order to achieve the above object, the present invention discloses a push-pull folding bicycle, wherein a frame of the bicycle is provided with a folding structure, and the frame forms a fixed section and a folded section for the folded section to be in a deployed position. Folding the fixing section with a folding position, and the bicycle is provided with an auxiliary wheel set under the five-way, so that it can be pushed and pulled after being folded; wherein the five-way is respectively pivoted on both sides a crank, each of the cranks rotates along a circular motion trajectory, and when the folded section is in the folded position, is not on the path of the trajectory of the crank;

Thereby, when the folding section is folded so as not to cause the crank to collide with it when it is rotated, the bicycle can perform forward pushing and reverse dragging.

Wherein, when the folded section is in the folded position, the diameter of the crank in the circular motion track is smaller than the shortest distance from the folded section to the auxiliary wheel set.

Wherein, when the folded section is in the folded position, the length of the crank is smaller than the shortest distance from the five-way to the folded section.

Wherein, a folding pedal is pivoted on each of the cranks, the folding pedal is folded toward the crank, and the positioning is fixed on the crank.

Wherein, the auxiliary wheel set has at least one universal roller.

Wherein, the auxiliary wheel set has a rod member, and the rod member is respectively provided with a wheel disc on both sides, the wheel disc can be rotated, and the wheel disc is pivotally provided with three rollers, and the rollers are positive on the wheel disc Arranged in triangles.

There is further provided another auxiliary wheel set, and the other auxiliary wheel set extends upwardly with a connecting rod. When the bicycle is folded, the connecting rod is movable between the two wheel sets.

Wherein, the other auxiliary wheel set has at least one universal roller.

Wherein, the other auxiliary wheel set has a rod, the connecting rod is disposed at an upward extension of the rod, and the rod is respectively provided with a rotatable roulette on both sides, and the roulette is pivoted There are three rollers, which are arranged in an equilateral triangle on the wheel.

Through the above structure, the present invention achieves the following technical effects -

1. By the design of the frame and the crank, when the bicycle is folded and used as a storage trailer, the crank does not collide with the frame and the vehicle body when rotating, thereby the bicycle can be forwardly pushed and Reverse dragging, making it more mobile autonomy and convenience.

2. The curved section of the folding section is designed to increase the distance from the crank to the folding section, and the position of the frame on the vehicle body can be set as the position of the general folding bicycle without affecting Original car body Structural strength design.

3. A folding pedal is pivoted on the movable end of each crank, and the folding pedal can be rotated and folded with the crank pivoting end as an axis, and can be positioned and locked on the crank after being folded, so as to avoid being generated when traveling. Shaking, and can help reduce the size of the bicycle after folding, to avoid the pedal hitting the user or other foreign objects.

4. The auxiliary wheel set may include a rod member respectively pivoting a wheel disc on both sides such that the wheel disc is located on two sides below the vehicle body, and the wheel disc is pivotally provided with three rollers to enable the same The rollers are arranged in an equilateral triangle on the wheel disc, whereby the structure is designed so that the bicycle can be easily moved forward in the stairwell without lifting or transporting the vehicle body, and the folding bicycle can be solved by forcibly going up and down the stairs. Shaking, even damaged.

5. Two auxiliary wheel sets can be installed on the vehicle body, one of which is set under the vehicle body, and the other is set between the folded two wheel sets, which can be respectively ordinary universal wheels. And the above-described roller pattern arranged in an equilateral triangle, thereby increasing the balance of the vehicle body and making the bicycle easier to turn when folded for use as a storage trailer. DRAWINGS

Figure 1 is a perspective assembled view of the present invention in an unfolded state.

Figure 2 is a perspective assembled view of the present invention in a folded state.

Figure 3 is a schematic view of the operation of the present invention.

FIG. 4 is a schematic view showing the use state of the collocation auxiliary wheel set of the present invention.

FIG. 5 is a schematic view showing the operation of the auxiliary wheel set according to the present invention.

Fig. 6 is a schematic view showing another use state of the collocation auxiliary wheel set of the present invention. detailed description

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

As shown in FIG. 1 and FIG. 2, the present invention is a push-pull folding bicycle, and the bicycle body type of the bicycle is only for convenience of explaining the present invention, and the main technical content of the present invention can be implemented in various vehicles. The body is not limited to the type shown in the legend; in order to enable the vehicle body 1 of the present invention to be pushed in both directions as a trailer after folding, the assembly related to the main technical contents of the present invention includes a frame 10 and an auxiliary wheel set 20 , and a pair of cranks 30.

The frame 10 is provided with a folding structure 40. The folding structure 40 is disposed at a predetermined turning point of the frame 10. The folding structure 40 can be any type of folding structure adopted by the conventional folding bicycle, and the implementation manner is not limited thereto. The folding structure and working principle of the conventional folding bicycle can be applied to the present invention, and the structural form and the action mode are not the scope of the patent of the present invention, so the description is not further described; The frame 10 is formed with a folded section 11 and a fixed section 12, and the folded section 11 is folded toward the fixed section 12 between a deployed position and a folded position, the fixed section 12 includes a tube 121 and a five-way 122; The frame type design of the frame is not limited to the type shown in the legend, and only those who can achieve the object of the present invention can be realized as an implementation manner thereof.

The folding section U is slightly curved. The fixing section 12 includes a tube 121 and a five-way 122. The auxiliary wheel set 20 is disposed at an extension of the five-way 122. The auxiliary wheel set 20 has at least one universal roller 21 Or a wheel set that is limited by angle, but not limited to this.

As shown in FIG. 1 to FIG. 3, the pair of cranks 30 are respectively pivoted on both sides of the five-way 122, so that the cranks 30 can be rotated along a circular motion track (as shown by the broken line in FIG. 3), and when When the folding section 11 is in the folded position, the distance between the five-way 122 and the point of the folding section 11 is, as shown in FIG. 3, the distances L ₂ and L _{3 are} greater than the length L _{1 of} the crank 30 _; When the folded section 11 is in the folded position, the folded section 11 is not located on the path of the trajectory of the crank 30; by the slightly curved design of the folded section 11, the folded section 11 and the crank can be advantageously achieved. 30 matching design conditions, to increase the distance between the crank 30 and the folding section 11, and the position of the frame 10 on the vehicle body 1 can be set as the position of the general folding bicycle without affecting The structural strength of the original body 1 is designed.

A folding pedal 50 is pivoted to the movable end of each of the cranks 30. The folding pedal 50 can be rotated and folded with the pivoting end of the crank 30, and the locking structure between the folding pedal 50 and the crank 30 (Fig. The fastening structure can be clamped by a magnet absorbing or elastic element, so that the folding pedal 50 can be positioned on the crank 30 after folding, so as to avoid swaying during traveling, and the bicycle can be reduced after being folded. The volume is to prevent the pedal from striking the user or other foreign objects; and the structure of the folding pedal 50 is not particularly limited, and can be implemented by any folding pedal of a conventional folding bicycle, and its structure and working principle can be applied. The present invention, its structural form and mode of operation are not within the scope of the patent of the present invention, and therefore will not be further described.

Having explained the above structure, the following describes the operation and principle of the present invention in detail:

As shown in FIG. 3, since the folding section 11 is in the folded position, the distances from the points of the five-way 122 to the folding section 11 are as shown by the distances L ₂ and L ₃ , which are larger than the crank 30 . The length of the folded section 11 is not located on the path of the trajectory of the crank 30 when the folded section 11 is in the folded position, so that the crank 30 does not touch when it is rotated 360 degrees to any position. The folding section 11 and the ground, particularly when the folding pedal 50 is folded and positioned on the crank 30, can increase the smoothness of the rotation of the crank 30 without being interfered by the folding pedal 50; thereby, the bicycle is folded to serve as a storage trailer. When used, the bicycle can be forwarded and reversed.

In order to make the bicycle usable as a storage trailer after folding, the auxiliary wheel set 20 must be movably loaded or unloaded, and the manner of assembling the auxiliary wheel set 20 is not specifically limited. China TW New Patent Certificate No. M380267, No. M352497, No. M289405, No. M3841 No. 6, No. M384147, and Invention Patent No. 1309618 The way the group is assembled.

In addition, in order to facilitate the user's forward implementation and reverse dragging, the auxiliary wheel set 20 can be implemented in another type, as shown in FIG. 4 and FIG. The auxiliary wheel set 60 has a rod member 61. The rod member 61 is respectively provided with a wheel plate 62 on both sides, so that the wheel plate 62 can be rotated about the rod member 61, and the wheel plate 62 is pivoted. The three rollers 63 are arranged such that the rollers 63 are arranged in an equilateral triangle on the wheel 62. The wheel 62 is located on both sides below the body 1. This type allows the bicycle to easily walk in the stairwell, the user The vehicle body 1 does not need to be lifted or transported, and the situation that the conventional folding bicycle is shaken or even damaged due to forced up and down stairs can be solved.

And a handle group 80 is provided on the vehicle body 1 for axial rotation and tilt angle adjustment. When the handle set 80 is adjusted to a desired direction and angle, the positioning can be performed to match the user's operating angle. And height, so that the handle set 80 is easier to handle; and the seat tube 121 of the vehicle body 1 is provided with a folding design to telescopically fold the seat tube 121, as shown in FIG. When the user crawls on the stairs, the handle set 80 can be folded down, and the seat 90 on the seat tube 121 is gripped for towing.

As shown in FIG. 6, in addition to the auxiliary wheel set 60 mounted on the vehicle body 1, another auxiliary wheel set 70 can be added to the second wheel set 80 after the folding of the vehicle body 1 to increase the use. Convenience; the auxiliary wheel set 70 is a wheel set having a universal roller 71 or an angular limit, thereby increasing the balance of the vehicle body 1 and allowing the bicycle to be folded for use as a storage trailer. It is easier to turn; in addition, the mounting positions of the two auxiliary wheel sets 60, 70 described above may be replaced with each other.

While the invention has been described in terms of the preferred embodiments the embodiments 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 or variations that are made without departing from the spirit of the invention are the scope of the invention.

Claims

Claim

A push-pull folding bicycle, wherein a frame of the bicycle is provided with a folding structure, the frame forming a fixing section and a folding section, wherein the folding section is between a deployed position and a folded position The fixed section is folded, and the bicycle is provided with an auxiliary wheel set under the five-way, so that it can be pushed and pulled after being folded; the feature is that the five-way pivoting a crank on each side, each crank along a circle The shape trajectory is rotated, and when the folded section is in the folded position, it is not on the path of the trajectory of the crank;

2 . The push-pull folding bicycle according to claim 1 , wherein when the folding section is in the folded position, the diameter of the crank in the circular motion track is smaller than the shortest distance from the folding section to the auxiliary wheel set. .

3. The push-pull folding bicycle of claim 1, wherein the length of the crank is less than a shortest distance from the five-way to the folded section when the folded section is in the folded position.

4. The push-pull folding bicycle according to claim 1, wherein each of the cranks is provided with a folding pedal, the folding pedal is folded toward the crank, and the positioning is fixed on the crank.

The push-pull folding bicycle according to claim 1, wherein the auxiliary wheel set has at least one unidirectional roller.

6 . The push-pull folding bicycle according to claim 1 , wherein the auxiliary wheel set has a rod member, wherein the rod member is respectively pivoted on two sides thereof, the wheel plate is rotatable, and The wheel hub is provided with three rollers, and the rollers are arranged in an equilateral triangle on the wheel.

The push-pull folding bicycle according to claim 1, further comprising another auxiliary wheel set, wherein the other auxiliary wheel set extends upwardly with a connecting rod, and when the bicycle is folded, the connection is The pole activity is set between the two wheels.

The push-pull folding bicycle according to claim 7, wherein the other auxiliary wheel set has at least one universal roller.

The push-pull folding bicycle according to claim 7, wherein the other auxiliary wheel set has a rod, the connecting rod is disposed at an upward extension of the rod, and the rod is respectively at two The wheel is pivotally mounted on the side, and the wheel is pivotally provided with three rollers, and the rollers are arranged in an equilateral triangle on the wheel.