TWM521034U - Bicycle frame structure featuring both extendibility and collapsibility - Google Patents

Description

Bicycle frame structure capable of both telescopic and folding

The present invention relates to a bicycle frame, in particular to a bicycle frame structure which can be both telescopic and folded, which can be folded and resized, and has the advantages of being convenient to carry and suitable for users riding different bodies.

Under the concept of promoting health and environmental protection, cycling has become one of the most popular sports for modern people. Under this ethos, bicycle-related industries are also booming. Due to the improvement of the material living standards of modern society, the function of bicycles is no longer based on transportation. In order to better meet the needs of modern consumers and strive for market share, bicycle manufacturers are constantly improving the design of bicycles, depending on the type of bicycles used. Can be divided into two categories of sports and leisure.

In addition to riding bicycles for sports purposes, many modern people living in the city have switched to bicycles as a daily means of transportation, on the other hand, due to the universal setting of bicycle-specific roads and the two-week holiday. In practice, many people also carry bicycles as one of the leisure tools when driving to the outside world; therefore, in order to be able to carry and store bicycles more conveniently, the manufacturer has proposed a foldable bicycle so that the user can easily and conveniently Carry and store bicycles.

The Taiwan invention patent "Foldable Bicycle" of the No. 453962, which discloses a foldable bicycle comprising a front skeleton and a rear skeleton, the front and rear skeletons being in a non-overlapping manner Bonded together, except in the seat branch In addition to the folding and tying points on or near the side, the orientation of the front and rear skeletons is designed such that the dashed line between them can protrude forward or backward without touching any of the skeletons except the front and rear skeletons. Being articulated and secured together allows the bicycle to be in a riding state.

Although the aforementioned announced foldable bicycle can be folded together, the distance between the front axle and the rear axle cannot be adjusted. In other words, the aforementioned foldable bicycle can be reduced in size by folding to achieve convenient carrying, but The size of the bicycle cannot be arbitrarily adjusted to suit users of different sizes.

The purpose of the present invention is to solve the above-mentioned problems of the conventional bicycle, and to provide a bicycle frame structure which can be folded and which can adjust the size of the bicycle for riding by users of different bodies such as adults or children.

A bicycle frame structure capable of both telescopic and folding, comprising: a front frame and a rear frame, wherein the front frame and the rear frame are connected to each other by a pivotal connector, wherein the front frame and the rear frame The frame can be folded in a folded state to a folded state and mutually extended to a use state, and the pivoter has a locker for maintaining the front frame and the rear frame in use; wherein the front frame The first frame portion, a second frame portion and a holder are connected, and the second frame portion is connected by the pivoting frame and the rear frame, and the first frame portion and the second frame portion are slidable relative to each other. The relationship is combined to enable the first frame portion to slide relative to the second frame portion between a first position and a second position, wherein the holder can move the first frame portion and the second frame portion It is fixed in a relatively fixed fixed position and released from the fixed position.

In an embodiment of the present invention, the pivotal connector is a hinge, and the locking device is a quick release structure disposed on the hinge.

In an embodiment of the present invention, the second frame portion is a hollow tubular body, and the first frame portion is a tubular member slidable along the axial direction of the tubular body of the second frame portion.

In an embodiment of the present invention, an embodiment of the holder is a quick release structure, the holder passes through a cross section of the first frame portion and the second frame portion, and the holder can move the first frame portion The side wall is urged toward the second frame portion for tightly clamping the first frame portion and the second frame portion together.

Therefore, it can be understood from the above technical content that the bicycle frame structure which can be both telescopic and folded can be easily folded and resized, and has the advantages of being convenient to carry and suitable for users riding different bodies.

The specific embodiments and other advantages and effects of the present invention will be described below in conjunction with the drawings.

A‧‧‧ front frame

B‧‧‧ rear frame

W2‧‧‧ rear wheel set

10‧‧‧Bridge

10A‧‧‧Second pivotal

11‧‧‧First wing

111‧‧‧ first gap

12‧‧‧second wing

121‧‧‧second gap

122‧‧‧Rotary axis

13‧‧‧ pivot

20‧‧‧Locker

21‧‧‧ lever

211‧‧‧End

212‧‧‧ bolt

22‧‧‧Cam lever

221‧‧‧ cam

222‧‧‧

30‧‧‧First Frame Department

31‧‧‧Perforation

32‧‧‧ head tube

33‧‧‧ front fork

34‧‧‧Handle tube

40‧‧‧Second Frame Department

50‧‧‧fixer

51‧‧‧ lever

511‧‧‧ nuts

52‧‧‧Cam lever

521‧‧‧ cam

60A‧‧‧After fork

60B‧‧‧ rear fork

70‧‧‧Riser

71‧‧‧ front bracket

72‧‧‧ seat tube

73‧‧‧Strengthened rod

Fig. 1 is a structural view showing an embodiment of a bicycle frame structure capable of both telescopic and folding, showing a case where the first frame slides to the first position.

Fig. 2 is a structural view showing an embodiment of a bicycle frame structure capable of both telescopic and folding, showing a case where the first frame slides to the second position.

FIG. 3A is a top plan view showing an embodiment of the pivotal connector of the front frame, showing the state in which the locker of the pivotal connector is in the locked position.

FIG. 3B is a top plan view of an embodiment of the pivotal connector of the front frame, illustrating the state in which the locker of the pivotal connector is in the unlocked position.

Figure 4A is a cross-sectional structural view of the first figure at the IV-IV position, showing the position of the retainer in the tightened position. shape.

FIG. 4B is another schematic diagram of the operation of FIG. 4A, showing the state in which the holder is in the release position.

Fig. 5 is a schematic view showing the use of an embodiment of the present invention, showing a situation in which the front frame and the rear frame are folded and folded together.

First, please refer to FIG. 1 , which is a structural view of an embodiment of a bicycle frame structure capable of both telescopic and folding, wherein the disclosed bicycle frame structure capable of both telescopic and folding includes: a front frame A And a rear frame B, the front frame A and the rear frame B are connected to each other by a pivotal joint 10, wherein the front frame A and the rear frame B can be folded in half with each other at the midpoint of the pivotal connector 10 In a folded state (see FIG. 3B) and mutually deployed to a use state (see FIG. 3A), the pivoter 10 has a locker 20 for maintaining the front frame A and the rear frame B in use. .

In an embodiment of the present invention, the pivotal connector 10 is a hinge, and the locker 20 is a quick release structure disposed on the hinge; the pivotal connector 10 includes a first wing 11 fixed to the rear frame B and fixed In a second wing 12 of the front frame A, one ends of the first wing 11 and the second wing 12 are rotatably pivoted together by a pivot 13, so that the front frame A and the rear frame B can be folded into a folded state with the pivot point 10 as a midpoint (see Fig. 5) and expanded to each other to a use state (see Fig. 1).

Referring to FIGS. 3A and 3B, in an embodiment of the present invention, the locker 20 is a quick release structure, and the quick release structure includes a pull rod 21 and a cam lever 22 on the first flap. 11 and the other end of the second wing 12 respectively have a first notch 111 and a second notch 121, the opening of the first notch 111 extends to the edge of the first wing 11, and the opening of the second notch 121 extends to the second At the edge of the wing 12, the tie rod 21 passes through the first notch 111 of the first wing 11 and the second notch 121 of the second wing 12 in a loose fit relationship, and the tail end 211 of the tie rod 21 passes through the second wing 12 Outer side, tie rod The tail end 211 of the yoke 21 is rotatably disposed on the outer side of the second wing 12 . For example, a bolt 212 is disposed on the tail end 211 of the pull rod 21 , and the bolt 212 is screwed to a rotating shaft 122 on the outer side of the second wing 12 . The front end of the 21 is inserted out of the outer side of the first wing 11. The cam lever 22 includes a cam 221 and a lever 222 connected to the cam 221. The eccentric shaft of the cam 221 is pivotally disposed at the front end of the rod 21. Please refer to FIG. 3A. The current frame A and the rear frame B are mutually deployed to a use state with the pivot 13 of the pivotal connector 10 as a rotation point, and the first flap 11 and the second flap 12 can abut each other, and then the cam lever 22 is moved to the locking position shown in FIG. 3A, and the first wing 11 can be tightened toward the second wing 12 by the cam 221 of the cam lever 22, avoiding the first wing of the pivoter 10. The plate 11 and the second wing 12 are separated to maintain the front frame A and the rear frame B in a use state; otherwise, when the frame of the bicycle is to be folded, the cam lever 22 is first turned to the 3B The unlocked position is shown in the figure, so that the cam 221 of the cam lever 22 is separated from the surface of the first flap 11, and then rotated by the tail end 211 of the pull rod 21 as a center of rotation. The cam lever 22 causes the cam lever 22 to leave the first notch 111 of the first wing 11 and the second notch 121 of the second wing 12, so that the front frame A and the rear frame B can be pivoted 10 The pivots 13 are folded into a folded state with respect to each other (see Fig. 5).

In an embodiment of the present invention, the configuration of the foregoing pivotal connector 10 and its implementation are one of many possible ways, and are not intended to limit the implementation of the foregoing pivotal connector 10, and are generally familiar with the prior art. After understanding the technical content of the above-mentioned pivotal connector 10, it should be easily converted into other equivalent structures, but such a simple transformation should still be regarded as the technical scope of the present creation.

In an embodiment of the present invention, the rear frame B includes: a rear upper fork 60A, a rear lower fork 60B, a riser 70 and a front bracket 71. The front bracket 71 is supported by the pivot joint 10 and the front frame A. A second frame portion 40 is connected. In an embodiment of the present invention, the first wing 11 of the pivotal connector 10 is fixed to One end of the front bracket 71 of the rear frame B, the second wing 12 of the pivotal connector 10 is fixed to one end of the second frame portion 40 of the front frame A; wherein the riser 70 is used to support a tube 72, And the large toothed disc and the crank set of the bicycle can be assembled at the bottom end of the riser 70, wherein the upper end of the rear upper fork 60A is fixedly connected to the position of the riser 70 near the upper end, and the upper end of the rear lower fork 60B is fixedly connected to the riser 70. The lower end position, the lower upper fork 60A and the lower rear fork 60B lower end are connected to each other for assembly of the rear wheel set W2, and the riser 70, the rear upper fork 60A and the rear lower fork 60B constitute a triangular structure, the front bracket One end of the 71 is fixedly connected to the riser, and the other end of the front bracket 71 protrudes toward the front frame A. As shown in Fig. 1, in a preferred embodiment, the front bracket 71 includes a reinforcing rod 73, a reinforcing rod The bottom end of the 73 is fixedly connected to the position of the riser 70 near the lower end, and the top end of the reinforcing rod 71 is fixedly coupled to the lower side of the front bracket 71, and the triangular structure is formed by the riser 70, the front bracket 71 and the reinforcing rod 73, and Good structural strength.

In an embodiment of the present invention, the front frame A includes a first frame portion 30, a second frame portion 40, and a holder 50. The second frame portion 40 is supported by the pivoting device 10 and the rear vehicle. The frame B is connected, and the first frame portion 30 and the second frame portion 40 are combined in a relatively slidable relationship, so that the first frame portion 30 can be in a first position and a position relative to the second frame portion 40. Sliding between the second positions, the holder 50 can secure the first frame portion 30 and the second frame portion 40 in a relatively stationary fixed position and release from the fixed position. In an embodiment of the present invention, when the first frame portion 30 is slid to the first position, the distance between the first frame portion 30 and the second frame portion 40 is the closest, and the frame length of the bicycle is shortened to the shortest. Position (see Fig. 1). Conversely, when the first frame portion 30 is slid to the second position, the distance between the first frame portion 30 and the second frame portion 40 is the farthest, and the frame length of the bicycle can be Stretch to the longest position (see Figure 2). Therefore, users of different sizes can freely adjust the length of the bicycle frame to obtain a comfortable and better riding posture.

In an embodiment of the present invention, a front end of the first frame portion 30 is provided with a head tube 32, and the front fork 33 of the bicycle is rotatably pivoted to the head tube 32, and the upper end of the front fork 33 is connected with a handle tube 34. The handle of the bicycle is mounted on the handle tube 34. In a preferred embodiment, the handle tube 34 is coupled to the top end of the front fork 33 by a second pivotal connector 10A. The second pivotal connector 10A can be constructed as described above. The pivoting device 10 is the same. Therefore, the handle and the handle tube 34 of the bicycle can also be folded at the rotation point of the second pivotal connector 10A, thereby further reducing the occupied space of the bicycle frame after folding, and being more convenient to carry and store.

In an embodiment of the present invention, the second frame portion 40 of the front frame A is a hollow tubular body, and the first frame portion 30 is slidable along the axial direction of the tubular body of the second frame portion 40. In one embodiment, the first frame portion 30 projects into the second frame portion 40 in a slidable relationship, and the front end of the first frame portion 30 has a head tube. One embodiment of the retainer 50 is a quick release configuration, one embodiment of which is similar to the locker 20. Referring to FIGS. 1 and 4A, the first frame portion 30 has an elongated perforation 31 through which the tie rod 51 of the holder 50 passes through the cross section of the second frame portion 40 and the first frame portion 30. The front end of the pull rod 51 passes through the outer side of the second frame portion 40, and a cam lever 52 is pivotally disposed at the front end of the pull rod 51. The tail end of the pull rod 51 passes out of the outer side of the second frame portion 40 at the pull rod 51. The tail end is provided with a rotatable nut 511. After the user adjusts the length of the bicycle frame to a suitable length by sliding the first frame portion 30 and the second frame portion 40, the dial is further adjusted. The movable cam lever 52 is moved to the pressing position (see FIG. 4A), and the cam 521 of the cam lever 52 abuts against the outer surface of the second frame portion 40 while the nut 511 at the end of the pull rod 51 is pulled. Tightening the other opposite outer side surface of the second frame portion 40, the side wall of the second frame portion 40 can be urged toward the first frame portion 30 for the first frame portion 30 and the second vehicle The frame portion 40 is tightly clamped together, thereby maintaining the length of the bicycle frame at an adjusted length On the contrary, when the user of different body needs to re-adjust the length of the bicycle frame, the cam lever 52 can be moved to the release position as shown in FIG. 4B, and the cam 521 and the nut of the cam lever 52 are adjusted. 511 temporarily does not abut against the outer side surface of the second frame portion 40, and the user can easily slide the first frame portion 30 and the second frame portion 40 again to adjust the length of the bicycle frame to a suitable length. The first frame portion 30 and the second frame portion 40 are then re-fixed by the retainer 50 in a relatively stationary fixed position to maintain the frame length of the bicycle at the adjusted length; wherein the nut 511 is rotatably Screwed to the rear end of the pull rod 51, the position of the nut 511 is adjusted by rotating the nut 511, and the cam of the cam lever 52 can be made when the cam lever 52 is moved to the release position as shown in FIG. 4B. The 521 and the nut 511 temporarily do not abut against the outer side surface of the second frame portion 40, and the cam 521 of the cam lever 52 when the cam lever 52 is moved to the pressing position as shown in FIG. 4A. The nut 511 is abutted against the outer side surface of the second frame portion 40.

Although the present invention has been disclosed above by the above embodiments, it is not intended to limit the present invention, and any skilled person skilled in the art can make some modifications and retouchings without departing from the spirit and scope of the present invention. The scope of patent protection is subject to the terms of the claims attached to this specification.

A‧‧‧ front frame

B‧‧‧ rear frame

W2‧‧‧ rear wheel set

10‧‧‧Bridge

10A‧‧‧Second pivotal

11‧‧‧First wing

12‧‧‧second wing

30‧‧‧First Frame Department

32‧‧‧ head tube

33‧‧‧ front fork

34‧‧‧Handle tube

40‧‧‧Second Frame Department

50‧‧‧fixer

60A‧‧‧After fork

60B‧‧‧ rear fork

70‧‧‧Riser

71‧‧‧ front bracket

72‧‧‧ seat tube

73‧‧‧Strengthened rod

Claims (9)

A bicycle frame structure capable of both telescopic and folding, comprising: a front frame and a rear frame, wherein the front frame and the rear frame are connected to each other by a pivotal joint, wherein the front frame And the rear frame can be folded into a folded state and mutually extended to a use state with the pivoting device as a midpoint, the pivoting device having a locker for maintaining the front frame and the rear frame at The use state; wherein the front frame includes a first frame portion, a second frame portion and a holder, the second frame portion is connected by the pivot connector and the rear frame, the first The frame portion and the second frame portion are combined in a relatively slidable relationship such that the first frame portion is slidable relative to the second frame portion between a first position and a second position. Wherein the holder can fix the first frame portion and the second frame portion in a relatively fixed fixed position and release from the fixed position. The bicycle frame structure capable of both telescopic and folding, as claimed in claim 1, wherein the hinge is a hinge, and the lock is a quick release structure disposed on the hinge. A bicycle frame structure that can be both telescopic and folded as claimed in claim 1, wherein the second frame portion is a hollow pipe body, and the first frame portion is a pipe that can be along the second frame portion. a pipe that slides in the axial direction of the body. The bicycle frame structure capable of both telescopic and folding, as claimed in claim 1, wherein the holder is a quick release structure, and the holder passes through the cross section of the first frame portion and the second frame portion. The holder may press the side wall of the first frame portion toward the second frame portion to tightly clamp the first frame portion and the second frame portion together. The telescoping and folding bicycle frame structure according to claim 4, wherein the first frame portion has an elongated perforation, the holder comprises a pull rod and a cam lever, the rod of the holder a cross section passing through the second frame portion and the elongated wear of the first frame portion a hole, the front end of the rod passes through the outer side of the second frame portion, and the cam lever is pivotally disposed at a front end of the rod, the tail end of the rod passes through the outer side of the second frame portion, and the rod is The tail end is provided with a rotatable nut, the cam lever includes a cam and a lever connected to the cam, and an eccentric shaft of the cam is pivoted at a front end of the rod. The bicycle frame structure capable of both telescopic and folding, as claimed in claim 1, wherein the pivoting device comprises a second wing fixed to the front frame and a first wing fixed to the rear frame. One end of the first wing and the second wing are pivotally coupled together by a pivot, the locker includes a pull rod and a cam lever, and the first wing and the second wing The other end of the plate has a first notch and a second notch, the opening of the first notch extends to the edge of the first wing, and the opening of the second notch extends to the edge of the second wing, the lever Passing through the first notch and the second notch in a loose fit relationship, the tail end of the pull rod passes out of the outer side of the second wing, and the tail end of the pull rod is rotatably pivoted on the second wing The front end of the pull rod passes through the outer side of the first wing. The cam lever includes a cam and a lever connected to the cam, and an eccentric shaft of the cam is pivoted at a front end of the rod. The bicycle frame structure capable of both telescopic and folding, as claimed in claim 6, wherein the rear frame comprises: a rear upper fork, a rear lower fork, a riser and a front bracket, the riser and the rear upper The fork and the lower fork form a triangular structure, one end of the front bracket is fixedly connected to the riser, and the other end of the front bracket protrudes toward the front frame, and the first wing is fixed to the front One end of the bracket is fixed to one end of the second frame portion. The telescoping and folding bicycle frame structure according to claim 7, wherein the upper end of the rear upper fork is fixedly connected to the upper end of the riser, and the upper end of the rear lower fork is fixedly connected to the lower end of the riser. Position, the rear upper fork and the lower lower fork are connected to each other to constitute the The structure of the triangle. The telescoping and folding bicycle frame structure according to claim 7, wherein the front bracket comprises a reinforcing rod, and the bottom end of the reinforcing rod is fixedly connected to the position of the riser near the lower end, and the top end of the reinforcing rod is fixed. Attached to the lower side of the front bracket, the riser, the front bracket and the reinforcing rod form a triangular structure.