JP2005145451A - Combination bicycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combination bicycle capable of completing a disassembly/assembly work of front/rear frames by a single combining device. <P>SOLUTION: The combination bicycle mainly consists of a front frame and a rear frame. Combination tubes fixed to the rear frame by a rear portion of an upper tube of the front frame and a connection tube form combining devices to be connected to each other. The combination tubes fix a rear portion of the upper tube passing through a hollow tube opened in both ends by holding the rear portion by a clamp. In addition, an insertion member such as an inner recessed slot is installed in a bottom of the upper tube, and another insertion member capable of fitting the insertion member in an inner wall of the combination tube is provided to prevent the front/rear frames from being twisted. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention is a combined bicycle that is attached and disassembled using a combination device to prevent torsion of the front and rear frames.

  The traditional frame structure of the bicycle includes a fixed type and a telescopic type.

  The fixed frame was welded integrally with a head tube, front branch tube, upper tube, lower tube, insertion tube, rear branch tube, and other tubes. There is an advantage that the strength of the frame structure is good and the design of the external appearance is not limited (it is easy to design an external appearance that is preferred by consumers such as a diamond frame). However, the volume is too large, which greatly increases the cost of warehousing, packaging, and transportation, and the frame is long and heavy, making it difficult for storage and transportation. Thus, since it is difficult for a consumer to transport a bicycle to a suburb with a small passenger car, the leisure / health function of the bicycle is affected. For the time being, a bicycle support structure for a vehicle for fixing the bicycle to the top or the back of the vehicle is on the market for the time being, but it is difficult to operate and affects driving.

  For the telescopic frame, a hinge that folds the frame back and forth is provided to shorten the length of the frame, so it is convenient to store and you don't have to worry about transporting your bicycle to the suburbs. However, the strength of the frame structure is insufficient, so a reinforcement structure is required (otherwise cracks are likely to occur at the hinge), and the design of the exterior is limited to the hinge / extension / contraction direction. It is difficult to design the preferred appearance. In addition, as for packaging, the stretchable bicycle greatly increases in width as the length is shortened, so that the packaging volume cannot be reduced even when folded. Storage and transportation are difficult for manufacturers and dealers. On top of that, telescopic bicycles are heavier than fixed bicycles, so they are not as convenient for transportation as fixed ones.

  The object of the present invention: it is not necessary to use any tools, and the bicycle can be disassembled and attached easily and quickly.

  Object of the invention: When the combined bicycle is removed, the packaging volume is reduced and at the same time the weight of the bicycle is divided. User storage and transportation is convenient. The disassembled bicycle can also be transported in the trunk of a passenger car.

  Object of the present invention: The strength of the body structure is strong, and it is not necessary to take measures to reinforce like a telescopic bicycle.

  The object of the present invention: The disassembling / attaching operation of the CFC / rear frame can be completed with a single combination device. The disassembly and installation work is convenient, and the bicycle structure is abbreviated, reduced in weight, and carried easily.

  Combined bicycle that can fulfill the above purpose: mainly composed of front and rear frames. The combination tube fixed to the rear frame with the rear part of the upper tube of the front frame and the connection tube becomes a combination device that can be connected to each other. The combination tube is a hollow tube that opens at both front and rear ends, and the rear portion of the upper tube that penetrates the tube is clamped and fixed. In addition, an insertion member such as an indented slot is installed on the bottom of the upper tube, and there is an insertion member in which the insertion member can be fitted to the inner wall of the combination tube, thereby preventing the front and rear frames from being twisted.

  Refer to Figure 1-3. The combined bicycle provided by the present invention is mainly configured by attaching a front frame 10 and a rear frame 20. The front and rear frames 10 and 20 are disassembled and attached by a single combination device 40. An anti-twisting member is installed to prevent the front and rear frames 10 and 20 from twisting abnormally when the bicycle moves forward within the single combination device 40.

  The front skeleton 10 includes a head tube 12 and a front branch tube that penetrates the head tube from bottom to top. The top of the front branch tube 14 is connected to the handle stand tube 16 of the handle 13, and a front wheel 15 that can be rotated by a combination member such as a bolt and a quick lever is attached to the bottom. A bearing is installed between the front branch tube 14 and the head tube 12 so that the handle 13 can be rotated within a range of angles (for the user to change direction). In addition, a folding hinge 17 is installed on the handle stand tube 16 close to the head tube 12, and the handle stand tube 16 is folded downward as shown in FIG. 6 (to reduce the storage volume). The head tube 12 is connected to an upper tube extending rearward. The rear portion of the upper tube 11 is a free end portion 41 that is a part of the combination device 40. The cross section of the upper tube 11 in this embodiment may be circular, elliptical, or rectangular.

  Also included is a five-branch tube 22 for mounting the rear frame 20 post-rank pedal 27 and chain transmission 21. A rear branch lower tube 29 extending backward and an insertion tube 24 extending upward are welded to the five branch tubes, respectively. The rear branch upper tube 28 is welded and connected to the top of the insertion 24. The upper and lower tubes 28 and 29 jointly form a rear branch tube on the rear branch. After the rear portions overlap, the rear tube 25 is assembled to a rear wheel 25 that can be driven by the transmission device 21 with a nut and revised. The saddle stand tube 23 with the saddle 26 enters the insert tube 24 through an opening at the top of the insert 24, and the quick extend lever 30 holds the saddle stand tube 23 firmly.

  The connection tubes 31 and 32 extending forward are welded to the insertion tube 24 and / or the five-branch tube 22. A hollow combination tube 42 having both ends open at the sides is welded to the front ends of the connection tubes 31 and 32, which are members constituting the combination device 40.

  Please refer to Fig.4 and Fig.5 at the same time. The free end 41 of the upper tube 11 has the same gradient as the hollow combination tube 42 and is located on the same straight line. Since the opening inner diameter of the combination tube 42 is equal to the outer diameter of the free end portion 41, the free end portion 41 can penetrate the combination tube 42, so that the front and rear frames 10, 20 can be attached to a bicycle as shown in FIG. The intermediate portion of the combination tube 42 is enlarged in diameter so that the inner diameter exceeds the outer diameter of the free end portion 41, thereby eliminating the frictional resistance when the free end portion 41 slides inside the combination tube 42. And the connection tubes 31 and 32 are welded to each other to avoid the influence on the slip of the free end 41 due to the welding rod remaining. There are T-shaped cracks 43 and 44 at the two opening ends of the combination tube, respectively, and there is an elastic tendency to keep the opening inward. After the free end 41 reaches a certain position in the combination tube 42 (as shown in FIGS. 2 and 3), the (T-shaped cracks) 43 and 44 opening ends of the combination tube 42 are tightened with the lock clamp 45, and the opening is opened. The free end 41 is fixed by deforming the end. The combination tube 42, the lock clamp 45 and the free end 41 of the upper tube 11 are the main components of the single combination device 40.

  The lock clamp 45 is a product sold in the market, and includes a bolt 47, a nut 48, and an eccentric pull lever 49. The bolt 47 has a retaining ring having a shape similar to C. Using the eccentric pull lever 49, the cam acts on the retaining ring 46 and presses the combination tube 42. When the combination tube 42 is pressed, the free end 41 is pressed. When the eccentric pull lever 49 is released, the combination tube 42 is not pressed.

  When the bicycle is run with the pedal 27 depressed, a torsional motion is generated between the front and rear frames 10 and 20. Therefore, preventing the front and rear frames 10 and 20 from twisting has become an important technical subject of the present invention. The present invention has established a solution. An insertion member 51 such as an inner recess slot is installed on the outer wall of the upper tube 11, and a corresponding insertion member 52 is installed on the inner walls of the two open ends of the combination tube 42. When the free end 41 of the upper tube 11 enters the inside of the combination tube 42, the insertion member 52 of the combination tube 42 is fitted into the insertion member 51 of the upper tube 11, so that the twist between the combination tube 42 and the free end 41. Does not occur. In this way, when the bicycle is run, no twisting motion occurs between the front and rear frames 10 and 20. In another embodiment, the free end 41 and the combined tube 42 are multi-sided tubes such as an ellipse and a rectangle, which also help prevent twisting.

  In addition, a swivel 53 that protrudes inward is installed at the rear of the combination tube 42, and when the free end 41 enters the inside of the combination tube 42, the free end 41 is held down and aligned with the rear of the combination tube 42. In that case, the front and rear wheels 15, 25 touch the ground at the same time.

  Refer to Figure 6 and Figure 7. If it is necessary to store the bicycle or transport the bicycle in a passenger car, turn the quick disconnect lever 30 back, remove the saddle stand tube 23 from the insertion tube 24 or lower it to the minimum height, then loosen the lock clamp 45, The inside of the combination tube 42 is separated from the free end 41 of the upper tube 11, and the front and rear frames 10 and 20 are removed. In addition, the handle stand tube 16 is folded down by the folding hinge 17 to lower the altitude of the bicycle. Thereafter, as shown in FIG. 7, the removed front / rear frames 10 and 20 and the saddle stand tube 23 are folded together, and the storage space of the bicycle is reduced. Can be stored.

  The above description is given for one of the embodiments of the present invention, and the above embodiment does not limit the patent scope of the present invention. Any implementation or change in the technical scope of the present invention shall be included in the patent scope of the present invention.

The top three-dimensional exploded view of this invention combination type | formula bicycle. The combination figure of this invention combination type | formula bicycle. The top view of this invention combination type | formula bicycle. FIG. 4 is an enlarged cross-sectional view taken along line 4 to 4 in FIG. 3 to display an insertion member that prevents twisting of the upper tube and the combination tube. A three-dimensional enlarged view of the upper tube / combination tube of the combination bicycle. The plane exploded view before removing a combination type bicycle to a front and rear frame. The top view after folding a bicycle in order to reduce storage volume after removing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Front frame 11 Upper tube 12 Head tube 13 Handle 14 Front branch tube 15 Front wheel 16 Handle stand tube 17 Folding hinge 20 Rear frame 21 Transmission device 22 Five branch tube 23 Saddle stand tube 24 Insertion tube 25 Rear wheel 26 Saddle 27 Pedal 28 Rear branch upper tube 29 Rear branch lower tube 30 Quick disconnect lever 31 Connection tube 32 Connection tube 40 Combination device 41 Free end 42 Combination tube 43 T-shaped crack 44 T-shaped crack 45 Lock clamp 46 Retaining ring 47 Bolt 48 Nut 49 Eccentric pull lever 51 Insertion member 52 Insertion member 53 Turner 60 Figurine container

Claims (6)

A combination bicycle that includes the following parts:
Front skeleton: Head tube, front branch tube that penetrates the head tube from bottom to top, handle stand tube is tied to the top of the front branch tube, and the head tube is connected to the upper tube that extends backward, and the upper tube The end of the wire forms a free end, and the member is fitted to the outer wall.
A crank-type pedal and a transmission five-branch tube are provided on the rear frame. The five-branch tube is connected to a rear branch tube extending backward and an insertion tube extending upward, and the rear branch tube is driven by the transmission device. A rotating rear wheel is mounted, a saddle stand tube is fixed to the insertion tube, the rear frame is connected to at least one forward connecting tube, and the front end of the connecting tube is hollow with both ends open Connected to the combination tube, it is located in a common line with the upper tube, and at the same time the inner diameter of the opening is equal to the outer diameter of the upper end of the upper tube, so that the free end can penetrate the combination tube, and the combination tube There is an insertion member inside the combination tube that locks the free end firmly with lock clamps on both ends , Suppress the rotation of the free end.   The combination type bicycle according to claim 1: the insertion member of the upper tube is an indented slot, and the insertion member of the combination tube is an insertion cam.   The combined bicycle according to claim 1: There is a T-shaped crack at each of the two opening ends of the combined tube, and there is an elastic tendency to keep the opening inward. Combination bicycle according to claim 1: The diameter of the middle part of the combination tube is increased until the inner diameter exceeds the outer diameter of the free end. A combination bicycle according to claim 2: some of which swell inward to secure a free end to the rear of the combination tube.   The combination bicycle according to claim 1: the handle stand tube has a hinge for folding the handle stand tube.

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