TW201512010A - Bicycle frame unit - Google Patents

Abstract

This invention is a bicycle frame unit. The bicycle frame unit comprises of a front fork, front saddle tube, mid-section tube, and a rear fork. The front fork and the rear fork independently connect to a front wheel and a rear wheel. A stem hand bar passes through the front saddle tube which is pivotally installed at upper side of the front fork. The front and rear ends of the mid-section tube are respectively connected pivotally to the front saddle tube and the rear fork, and after unfolding and positioning, the mid-section tube together with the front fork will form the bicycle frame. The front saddle tube and the assembly of the front fork and the front wheel can be folded backward diagonally; furthermore, assembly of the rear fork and the rear wheel can be folded forward diagonally. With this design, it is suitable for the folding of normal size bicycle, and, after folding, the volume of overall frame unit is reduced to facilitate putting in a storage bag for storing or carrying.

Description

Bicycle frame unit

The invention relates to a bicycle frame unit, in particular to a technical field in which the three-stage frame unit can be folded forward and backward respectively obliquely to reduce the volume of the folded body.

When the bicycle is not used, it is convenient to carry or store. Therefore, there is a bicycle with a folding frame. There are many related patents, such as the new patent certificate number M380267, M352497, M289405, M383527, and M397940. And the invention patent number No. I309618, etc., when the vehicle body is folded, it is convenient to carry, carry or store, which makes the operation more labor-saving and convenient. However, the above patents are all innovative for small bicycles, and their folding methods are horizontal (horizontal) folding; in addition, China's new patent announcement No. 477329, new patent certificate No. M409210 The previous case is still innovative for small bicycles, but the way to fold it is to reveal the approach of folding in a nearly vertical direction.

According to the above, it can be seen that the frame of the existing folding bicycle is completely innovative for small bicycles. Except for the patent pending the new patent certificate No. M409210, the rest is folded once and the folding operation is completed. The reason is that for small bicycles, the goal of reducing the volume can be achieved once, but the structural composition cannot be applied to the bicycle of the general size, because the volume after the folding is still too large. And the new patent certificate number The patent case of M409210 discloses the folding operation of folding twice, but the folding method includes the horizontal (lateral) folding mode and the nearly vertical folding and folding mode, and the operation is relatively simple. Complex, therefore, there is still a need for improvement.

As mentioned above, the inventor first thought that if the bicycle frame unit can be folded and folded twice, the small bicycle can not only reduce the volume after folding, but also is suitable for bicycles of general size. Implementation, in order to reduce the volume after the folding, and then rethinking if the frame unit can be folded in three stages, and the respectively can be obliquely forward and backward, the folding can be reduced not only The folded volume and the easier operation of the folding are achieved, and the lack of improvement is achieved.

Therefore, the object of the present invention is to provide a bicycle frame unit, wherein the central technology system comprises the three-stage pivotal connection of the main body of the frame unit, and the front and the rear two sections are respectively inclined downward and forward. The backward staggering and folding is so innovative that it not only facilitates collection, carrying, and handling, but also achieves a simple goal of the folding operation, and is the main purpose of the present invention.

According to the above concept, the technical structure adopted by the present invention refers to a bicycle frame unit, which comprises a front fork frame, a front frame, a middle frame and a rear fork frame, wherein the front fork frame is provided with a handle bar and a handle The front seat frame is pivotally connected to the front fork frame, and the front side of the middle frame is pivotally connected with the front frame, the rear side of the middle frame is pivotally connected with the rear fork frame, and the front frame, the middle frame and the rear frame are After the fork frame is deployed and positioned, the front fork frame constitutes a bicycle frame. Wherein, a first oblique lug is arranged below the rear side of the front frame, and a section is provided below the front side of the middle frame The second oblique lug is in complementary engagement with the second oblique lug, and is obliquely assembled by a first plug, and the front mount is pivoted by the first plug. The slanting downwards and the middle frame are staggered and folded, and the third slanting lug is disposed under the front side of the rear yoke, and the fourth slanting lug is disposed at the lower side of the rear yoke and the fourth slanting lug And the second oblique lug is disposed diagonally, and the third oblique lug is complementarily engaged with the fourth oblique lug, and is obliquely assembled by a second plug, and the rear fork is The second pin is a pivot point and can be tilted down and forward and the middle frame is staggered and folded. According to this, the front fork frame and the front seat frame combined with the front wheel can be folded downward and rearwardly folded to be folded on one side of the frame, and the rear fork frame combined with the rear wheel can be bent downward and toward The front is staggered and folded on the other side of the frame.

Wherein, the first oblique ear has a first inclined hole, and the second oblique ear has a second inclined hole, and the first insertion hole passes through the first inclined hole and the second inclined hole and is inclined In addition, the third oblique lug has a third inclined hole, the fourth oblique lug has a fourth inclined hole, and the second plug passes through the third inclined hole and the fourth inclined hole. Skewed together. And the first insertion end is parallel with the second insertion end.

Furthermore, a front convex portion is disposed above the rear side of the front frame, and a front concave portion is provided on the front side of the front frame. When the front convex portion is incorporated into the front concave portion, the front frame can be deployed and positioned in the middle frame. The rear side of the rear fork frame is provided with a rear convex portion, and the rear side of the middle frame has a rear concave portion, and when the rear convex portion is assembled into the rear concave portion, the rear fork frame is deployed and positioned on the middle frame to achieve stable deployment. The structural composition of the positioning.

In addition, the rear fork frame is connected to a seat pole, and a seat above the seat bar.

A‧‧‧ frame unit

B‧‧‧ front wheel

C‧‧‧Rear wheel

P1‧‧‧ first tip

P2‧‧‧Second tip

S‧‧‧Seat

1‧‧‧ front fork

11‧‧‧Handlebar

2‧‧‧Front frame

21‧‧‧Perforation

22‧‧‧First oblique ear

221‧‧‧ first oblique hole

23‧‧‧Front convex

3‧‧‧ middle shelf

31‧‧‧Second oblique ear

311‧‧‧second oblique hole

32‧‧‧Front recess

33‧‧‧4th oblique ear

331‧‧‧four oblique hole

34‧‧‧ rear recess

4‧‧‧ rear fork

40‧‧‧Seat pole

41‧‧‧ Third oblique ear

411‧‧‧The third inclined hole

42‧‧‧post convex

The first figure is a perspective view of a three-dimensional embodiment of the present invention.

The second drawing is a partial perspective exploded embodiment of the present invention.

The third figure is a schematic diagram of the bottom view structure relationship of the present invention.

The fourth figure is a schematic view of the front view structure of the cooperation of the present invention.

The fifth figure is a schematic top view of the cooperation of the present invention.

The sixth drawing is a schematic front view of the unfolded state of the present invention and a partial enlarged view thereof.

The seventh figure is a schematic perspective view of the present invention after folding.

The eighth drawing is a schematic front view of the present invention after folding.

The ninth drawing is a schematic front view of the present invention after folding.

The present invention is a bicycle frame unit. The bicycle body type of the bicycle is only for convenience of description of the present invention. The main technical contents of the present invention can be implemented in various vehicle bodies, and are not limited to the vehicle type shown in the drawings.

The following is a preferred embodiment of the present invention. Referring to the first and second figures, the frame unit A of the bicycle of the present invention comprises a front fork frame 1, a front frame 2, a middle frame 3 and a Rear fork 4, where:

The front fork frame 1 is connected to a front wheel B in the front lower portion and a handle bar 11 in the upper rear direction.

The front frame 2 has a through hole 21 for the handle bar 11 to be worn so that the front frame 2 is pivoted above the front fork frame 1, and the front frame 2 is provided with a first oblique ear 22 below the rear side of the front frame 2 (eg, 2)), the first oblique ear 22 has a first inclined hole 221, and a front convex portion is disposed above the rear side of the front frame 2. twenty three.

The middle frame 3 has a second oblique lug 31 below the front side, and the second diagonal lug 31 is adapted to be in complementary engagement with the first oblique lug 22 (again, as shown in the third figure), and the second oblique lug The first slanting hole 311 has a second slanting hole 311, and the first spigot hole 221 and the second slanting hole 311 are obliquely assembled, and the front yoke 2 can be the first spigot P1. The point can be inclined downward and backward to be folded and folded with the middle frame 3 (as in the fourth and fifth figures); further, the front frame 3 has a front concave portion 32 on the front side and the front convex portion 23 of the front frame 2 When the front recess 32 is inserted, the front frame 2 and the middle frame 3 can be deployed and deployed (again, the sixth figure). Moreover, the lower side of the middle frame 3 has a fourth oblique lug 33, and the fourth diagonal lug 33 is disposed diagonally with the second diagonal lug 31 (as shown in the third figure), and the fourth oblique The connecting lug 33 has a fourth inclined hole 331. Further, the rear side frame 3 has a rear recess 34 on the rear side.

The rear fork frame 4 is connected to a rear wheel C at the lower rear side. Further, the rear fork frame 4 is connected with a seat rod 40, and a seat S is disposed above the seat rod 40. A third oblique lug 41 is disposed under the front side of the rear fork frame 4, and the third diagonal lug 41 is adapted to be in complementary engagement with the fourth diagonal lug 33 (as shown in the third figure), and the third oblique joint The ear 41 has a third oblique hole 411, and a second insertion hole P2 passes through the third oblique hole 411 and the fourth oblique hole 331 to form an oblique assembly. The second insertion P2 is connected to the first insertion hole. The tip P1 is parallel, and the rear fork frame 4 can be tilted downward and forward with the second insertion end P2 as a pivot point, and is staggered and folded with the middle frame 3 (as shown in the fourth and fifth figures); The front frame of the fork frame 4 has a rear convex portion 42 above, and when the rear convex portion 42 is assembled into the concave portion 34 of the middle frame 3, the rear fork frame 4 and the middle frame 3 can be deployed and deployed (also as shown in the sixth figure). .

With the component assembly, it can be seen that the frame unit A of the present invention is pulled up by the front frame 2 (along with the front fork 1 and the front wheel B), and the front convex portion 23 is assembled into the recess 32 before the middle frame 3. The front frame 2 and the middle frame 3 can be deployed and deployed, and the rear fork frame 4 is pulled up (along with the rear wheel C), so that the rear convex portion 42 is assembled into the concave portion 34 after the middle frame 3, The fork frame 4 and the middle frame 3 are in a deployed position (as shown in the sixth figure), so that the operation can be expanded and positioned, the operation can be said to be extremely convenient, and the frame unit A can be set as an upwardly convex circular frame when riding When the load is carried, the position can be more stable. Of course, a lock device (not shown) can be additionally added to strengthen the structural strength of the unfolding. It should be emphasized that the front convex portion 23 is incorporated into the front concave portion 32, and the rear convex portion 42 is formed into the rear concave portion 34, and the complementary conjugated structure is formed therebetween, but not convex or concave. The joint is limited, as long as the structure that can constitute a complementary snap is the scope of this creation.

Secondly, when the frame unit A is to be folded, the front frame 2 only needs to be tilted downwards with the first insertion end P1 as the pivot point. At this time, the front fork frame 1 and the front frame 2 combined with the front wheel B can be inclined downward. And backwards with the middle frame 3 (such as the fourth and fifth figures), and folded on one side of the frame, and the rear fork 4 combined with the rear wheel C is inclined downward with the second insertion point P2 as the pivot point, It is offset from the middle frame 3 in the forward direction, and is folded on the other side of the frame, so that the operation can be easily and completely folded, and the operation can be said to be extremely simple. The overall collapse status is also shown in Figures 7, 8, and 9.

According to the composition of the upper member and the implementation description, it can be confirmed that the folding idea of the present invention can be applied to a bicycle of a general size, and of course, it is also suitable for the implementation of a small bicycle, and it is indeed a simple target for operation, and is suitable for collection, handling, and carrying. , to increase the convenience, as shown in the seventh and ninth figures, the front wheel can be obtained in front of it B. The rear wheel C has almost overlapped, and the overall volume can be greatly reduced. Therefore, this creation is indeed much more economical than the aforementioned practitioners, and it is possible to ascertain the creative progress of the present invention.

In summary, it is known that the novel structure of the present invention has industrial applicability, novelty and advancement, and conforms to the invention patent requirements. The above is only the preferred embodiment of the invention, and is not intended to limit the scope of the invention. That is, the equivalent changes and modifications made by the scope of the patent application of the present invention are covered by the scope of the invention.

A‧‧‧ frame unit

B‧‧‧ front wheel

C‧‧‧Rear wheel

P1‧‧‧ first tip

P2‧‧‧Second tip

S‧‧‧Seat

1‧‧‧ front fork

11‧‧‧Handlebar

2‧‧‧Front frame

21‧‧‧Perforation

22‧‧‧First oblique ear

221‧‧‧ first oblique hole

23‧‧‧Front convex

3‧‧‧ middle shelf

31‧‧‧Second oblique ear

311‧‧‧second oblique hole

32‧‧‧Front recess

33‧‧‧4th oblique ear

331‧‧‧four oblique hole

34‧‧‧ rear recess

4‧‧‧ rear fork

40‧‧‧Seat pole

41‧‧‧ Third oblique ear

411‧‧‧The third inclined hole

42‧‧‧post convex

Claims (5)

A bicycle frame unit includes a front fork frame, a front frame, a middle frame and a rear fork. The front fork is provided with a handle bar upwardly, and the front frame is pivoted by the handle bar. Above the front fork frame, the front frame and the rear side of the middle frame are pivotally connected to the front frame and the rear fork frame respectively, and the front fork frame is deployed to form a bicycle frame; and the feature is: A first oblique lug is disposed on a lower side of the rear side of the front frame, and a second oblique lug is disposed on a front side of the middle frame, and the first oblique lug is complementary to the second oblique lug. And a first insertion end is obliquely assembled, and the front seat frame is tilted downward and rearward with the first insertion end as a pivot point, and the third rear side of the rear fork frame is provided with a third oblique direction a second oblique ear is disposed at a lower side of the rear side of the middle frame, the fourth oblique ear is diagonally disposed with the second oblique ear, and the third oblique ear is opposite to the first The four oblique lugs are complementaryly engaged and are obliquely assembled by a second spigot, and the rear yoke is pivoted with the second spigot Forward under the ramp collapsed. The bicycle frame unit of claim 1, wherein the first diagonal lug has a first inclined hole, the second oblique lug has a second inclined hole, and the first The insertion slot is formed by the first oblique hole and the second oblique hole and is obliquely assembled, and the third oblique connector has a third inclined hole, and the fourth oblique connector has a fourth inclined hole. And the second insertion end penetrates the third oblique hole and the fourth inclined hole to form an oblique assembly. The bicycle frame unit of claim 2, wherein the first lance and the second spigot are parallel. The bicycle frame unit according to claim 2, wherein a front convex portion is disposed on the rear side of the front frame, and a front concave portion is disposed on the front side of the front frame. When the front convex portion is assembled into the front concave portion, the front frame is deployed and positioned on the middle frame. A rear convex portion is disposed on the front side of the rear fork frame, and a rear concave portion is formed on the rear side of the rear frame. When the rear convex portion is assembled into the rear concave portion, the rear fork frame is deployed and positioned on the middle frame. The bicycle frame unit according to claim 1, 2, 3 or 4, wherein the rear fork frame is connected with a seat pole and a seat.